Patent Publication Number: US-2022235642-A1

Title: Connection Device, Control Box Component and Fracturing Apparatus

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation in part of U.S. Ser. No. 17/398,375 filed on Aug. 10, 2021 which is a continuation application of U.S. Ser. No. 17/172,819 filed on Feb. 10, 2021. The application U.S. Ser. No. 17/172,819 claims priority of Chinese Patent Application CN 202110101567.8, filed on Jan. 26, 2021. This application also claims priority under 35 U.S.C. 119 from the Chinese Patent Application CN 202122186195.1, filed on Sep. 10, 2021. The disclosures of all of these applications hereby incorporated herein by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     Embodiments of the present disclosure relate to a connection device, a control box component, and a fracturing apparatus. 
     BACKGROUND 
     Recently, as the demand for unconventional natural gas, such as shale gas, has grown, the demand for fracturing apparatus has also substantially grown. The fracturing apparatus usually includes a power device, a transmission component and a control box, etc. In some fracturing apparatus, the transmission component and the control box are close to each other in position, and it is difficult for the maintenance operation of the transmission component. 
     SUMMARY 
     The present disclosure relates to a connection device, a control box component, and a fracturing apparatus. In some example implementations, a connection device for connecting a control box of a fracturing apparatus with a mounting base of the fracturing apparatus is disclosed. The fracturing apparatus may include a transmission component. The transmission component may include a transmission shaft. The connection device may include a fixation rack, configured to be fixedly connected with the mounting base; a box connection mechanism, configured to be connected with the control box, and drive the control box to move at least from a first position to a second position relative to the fixation rack. When the connection device is connected with the mounting base and the control box is located at the first position, the control box may be located at a side of the transmission component in a direction perpendicular to an axis of the transmission shaft and a distance between the control box and the transmission component may be less than a predetermined distance. uring the control box being moved from the first position to the second position, the control box may be away from the transmission component to form an operation space for the transmission component at the first position. 
     In the implementation above, the box connection mechanism may be configured to drive the control box to rotate at least between the first position and the second position. The control box may have a first surface, and in a case that the control box is located at the first position, the first surface may face the transmission component. During the control box being moved from the first position to the second position, an included angle between the first surface and the axis of the transmission shaft may increase gradually. 
     In any of the implementations above, the box connection mechanism may be configured to drive the control box to move at least between the first position and the second position. The control box may have a first surface, and in a case that the control box is located at the first position, the first surface may face the transmission component. During the control box being moved from the first position to the second position, a distance between the first surface and the axis of the transmission shaft may increase gradually. 
     In any of the implementations above, the fixation rack may include a first fixation bracket and a second fixation bracket, each of which is configured to have a first end fixedly connected with the mounting base and a second end extending in a first direction relative to the first end; and a fixation shaft, configured to have a first end fixedly connected with the first fixation bracket and a second end extending in a second direction relative to the first end, and the fixation shaft is rotatably connected with the box connection mechanism. When the connection device is connected with the mounting base, any two of the first direction, the second direction and the axis of the transmission shaft may be perpendicular to each other. 
     In any of the implementations above, the box connection mechanism may include a support fame, comprising a bottom frame and a vertical frame fixedly connected with the bottom frame, wherein a plane where the bottom frame is located is parallel with a plane formed by the first direction and the axis of the transmission shaft. When the box connection mechanism is located at the first position, two sides of the bottom frame may lap on the first fixation bracket and the second fixation bracket, respectively. The vertical frame may be located at a side of the bottom frame away from the first fixation bracket and the second fixation bracket, and the vertical frame may be configured to be connected with the control box. The box connection mechanism may further include a rotation shaft configured to have a first end fixedly connected with the support frame and a second end extending to the second direction relative to the first end. The rotation shaft may be rotatably connected with the fixation shaft. 
     In any of the implementations above, the control box may include a first control box and a second control box, and the first control box and the second control box may be connected with two sides of the vertical fame, respectively. The support frame may further include a first vertical rod and a second vertical rod connected with the two sides of the vertical frame. The first vertical rod may be configured to be connected with the first control box, and the second vertical rod may be configured to be connected with the second control box. 
     In any of the implementations above, the fixation shaft may be located at the second end of the first fixed bracket. 
     In any of the implementations above, the connection device may further include a first limitation component, which may include a first limitation structure and a second limitation structure, wherein the first limitation structure is disposed on the support frame, the second limitation structure is disposed on the second fixation bracket, and the first limitation structure and the second limitation structure cooperate with each other to lock the control box at the first position. 
     In any of the implementations above, the connection device my further include a second limitation component, which my include a third limitation structure and a fourth limitation structure, wherein the third limitation structure is disposed on the support frame, the fourth limitation structure is disposed on the first fixation bracket, and the third limitation structure and the fourth limitation structure cooperate with each other to lock the control box at the second position. 
     In any of the implementations above, the connection device my further include at least one shock absorber, configured to be connected between the support frame and the control box. The at least one shock absorber may include a first shock absorber and a second shock absorber, the first shock absorber is configured to be connected between the first vertical rod and the first control box and/or between the second vertical rod and the second control box. The second shock absorber may be configured to be connected between the bottom frame and the control box. The shock absorber may include a vibration isolator. 
     In any of the implementations above, a surface of the first fixation bracket towards the second direction may be provided with a first pad plate. The first pad plate may be configured to be lapped with the support frame. The first pad plate may extend in the first direction. A thickness of a side of the first pad plate facing the second fixation bracket may be less than a thickness of a side of the first pad plate away from the second fixation bracket, to form a first inclined surface on the first pad plate. 
     In any of the implementations above, a surface of the second fixation bracket towards the second direction may be provided with a second pad plate. The second pad plate may be configured to be lapped with the support frame. The second pad plate may extend in the first direction. A thickness of a side of the first pad plate close to the first end of the second fixation bracket may be larger than a thickness of a side of the second pad plate close to the second end of the second fixation bracket, to form a second inclined surface on the second pad plate. 
     In any of the implementations above, the first fixation bracket may be provided with a via hole running through the first fixation bracket in a direction of the axis of the transmission shaft, for a cable running through the via hole to be connected with the control box. 
     In some other implementations, a control box component is disclosed. The control box component may include a control box, and the connection device any of the implementations above. The control box may be connected to the connection device. 
     In the implementations above, the fixation rack may include a first fixation bracket and a second fixation bracket, each of which may be configured to have a first end fixedly connected with the mounting base and a second end extending in a first direction relative to the first end. The fixation rack may further include a fixation shaft, configured to have a first end fixedly connected with the first fixation bracket and a second end extending in a second direction relative to the first end, and the fixation shaft is rotatably connected with the box connection mechanism. When the connection device is connected with the mounting base, any two of the first direction, the second direction and the axis of the transmission shaft may be perpendicular to each other. 
     In any of the implementations above, the box connection mechanism may include a support fame, which may include a bottom frame and a vertical frame fixedly connected with the bottom frame, wherein a plane where the bottom frame is located is parallel with a plane formed by the first direction and the axis of the transmission shaft. When the box connection mechanism is located at the first position, two sides of the bottom frame may lap on the first fixation bracket and the second fixation bracket, respectively. The vertical frame may be located at a side of the bottom frame away from the first fixation bracket and the second fixation bracket, and the vertical frame may be configured to be connected with the control box. The box connection mechanism may further include a rotation shaft, configured to have a first end fixedly connected with the support frame and a second end extending to the second direction relative to the first end, and the rotation shaft being rotatably connected with the fixation shaft. 
     In any of the implementations above, the control box may include a first control box and a second control box, and the first control box and the second control box are connected with two sides of the vertical fame, respectively. The support frame may further include a first vertical rod and a second vertical rod connected with the two sides of the vertical frame. The first vertical rod may be configured to be connected with the first control box, and the second rod maybe configured to be connected with the second control box. 
     In some other implementations, a fracturing apparatus is disclosed. The fracturing apparatus may include a mounting base, a transmission component, a control box, and the connection device of any of the implementations above. The control box may be connected to the mounting base through the connection device. 
     In any of the implementations above, the box connection mechanism may be configured to drive the control box to rotate at least between the first position and the second position. The control box may have a first surface, and when the control box is located at the first position, the first surface may face the transmission component. During the control box being moved from the first position to the second position, an included angle between the first surface and the axis of the transmission shaft may increase gradually. 
     In any of the implementations above, the box connection mechanism may be configured to drive the control box to move at least between the first position and the second position. The control box may have a first surface, and when the control box is located at the first position, the first surface may face the transmission component. During the control box being moved from the first position to the second position, a distance between the first surface and the axis of the transmission shaft may increase gradually. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to clearly illustrate the technical solution of embodiments of the present disclosure, the drawings of the embodiments will be briefly described in the following. It is obvious that the drawings in the description are only related to some embodiments of the present disclosure and not limited to the present disclosure. 
         FIG. 1  illustrates a schematic structural diagram of a fracturing apparatus; 
         FIG. 2  illustrates a schematic diagram of a connection between a connection device and a control box according to at least one embodiment of the present disclosure; 
         FIG. 3  illustrates a schematic diagram of the control box located at a second position according to at least one embodiment of the present disclosure; 
         FIG. 4  illustrates another schematic diagram of the control box located at the second position according to at least one embodiment of the present disclosure; 
         FIG. 5  illustrates a schematic diagram of a fixation rack and a box connection mechanism according to at least one embodiment of the present disclosure; 
         FIG. 6  illustrates a prospective schematic diagram of a control box and a connecting apparatus from a first angle of view according to at least one embodiment of the present disclosure; 
         FIG. 7  illustrates a prospective schematic diagram of the control box and the connection device from a second view of angle according to at least one embodiment of the present disclosure; 
         FIG. 8  illustrates a schematic side view of the control box and the connection device according to at least one embodiment of the present disclosure; 
         FIG. 9  illustrates a schematic front view of the control box and the connection device according to at least one embodiment of the present disclosure; 
         FIG. 10  illustrates a schematic diagram of the control box rotated to the second position according to at least one embodiment of the present disclosure; and 
         FIG. 11  illustrates a schematic diagram of the control box rotated back to the first position according to at least one embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     In order to make objects, technical details and advantages of the embodiments of the invention apparent, the technical solutions of the embodiment will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the invention. It is obvious that the described embodiments are just a part but not all of the embodiments of the invention. Based on the described embodiments herein, those skilled in the art can obtain other embodiment(s), without any inventive work, which should be within the scope of the invention. 
     Unless otherwise defined, the technical terminology or scientific terminology used herein should have the general meanings understood by those skills in the art to which the present invention belongs. The “first”, “second” and similar words used in the present invention application specification and claims do not mean any sequence, amount or importance, but are merely used to distinguish different components. Likewise, “a” or “an” or similar words do not mean the limitation to amount, instead, it refers to at least one. The word “comprise”, “include” or the like only indicates that an element or a component before the word contains elements or components listed after the word and equivalents thereof, not excluding other elements or components. “Connecting” or “connected” and similar words are not limited to the physical or mechanical connection, but may comprise electrical connection, no matter directly or indirectly. The words “on”, “beneath”, “left”, “right” and the like only indicate the relative position relationship which is correspondingly changed when the absolute position of a described object is changed. 
       FIG. 1  illustrates a schematic structure diagram of a fracturing apparatus. As illustrated in  FIG. 1 , the fracturing apparatus  100  includes a power device  100 , a reducer  120 , a transmission shaft  130  and a plunger pump  140  which are connected in sequence. The power device  10  can adopt a turbine engine, the reducer  120  can function to match rotational speed, etc., and the transmission shaft can transfer power of the reducer  120  to the plunger pump, to drive the plunger pump to operate. The transmission shaft  130  can include a coupling, and the coupling can connect an output shaft of the reducer with an input shaft of the plunger pump. A peripheral of the transmission shaft  130  can be provided with a transmission shaft protection mask (not illustrated), the transmission shaft protection mask encloses at least a partial region of the transmission shaft. For example, the transmission shaft protection mask can enclose the transmission shaft  130  by 360 degrees. Alternatively, the transmission shaft protection mask can cover merely two sides of the transmission shaft  130 . The transmission shaft protection mask can have a shape of circle, arc, square, polygon, etc., and the shape and dimension of the transmission shaft protection mask can be designed under actual requirements, which is not limited in the embodiments of the disclosure. The transmission shaft protection can protect the transmission shaft  130  and isolate the transmission shaft  130  operated in high speed from an operator and other objects. 
     For example, the fracturing apparatus  130  can further includes a control box  150 , electrical control elements (for example, a controller, etc.) can be provided in the control box  150 , the electrical control elements can be connected with a plurality of kinds of sensors provided on the fracturing apparatus to acquire a plurality of kinds of sensed data, and can further control and adjust corresponding devices of the fracturing apparatus  100  based on the sensed data. The plurality of kinds of the sensors can include a temperature sensor, a smoke sensor, etc., for example. 
     For example, the control box  150  and the transmission shaft protection mask are close to each other in position, and the transmission shaft protection mask is shielded, which cause difficulty for the maintenance of the transmission shaft protection mask or the transmission shaft. 
     At least one embodiment of the present disclosure provides a connection device, a control box component and a fracturing apparatus. The connection device is configured to connect a control box of a fracturing apparatus with a mounting base of the fracturing apparatus. The fracturing apparatus further includes a transmission component, and the transmission component includes a transmission shaft. The connection device includes: a fixation rack, configured to be fixedly connected with the mounting base; a box connection mechanism, configured to be connected with the control box and drive the control box to move at least from a first position to a second position relative to the fixation rack. In a case that the connection device is connected with the mounting base and the control box is located at the first position, the control box is located at a side of the transmission component in a direction perpendicular to an axis of the transmission shaft, and a distance between the control box and the transmission component is less than a predetermined distance. During the control box being moved from the first position to the second position, the control box is moved away from the transmission component, to form an operation space for the transmission component at the first position. In a state of the fracturing apparatus in a normal operation, the connection device can make the control box located at the first position, so that the respective parts of the fracturing apparatus can be more compact. In a case that the transmission component is required to be maintained, the control box can be moved to the second position, so that a region is empty as an operation space at a side of the transmission component, which is convenient for an operator to maintain the transmission component in the operation space. 
       FIG. 2  illustrates a schematic diagram of a connection between the connection device and the control box according to at least one embodiment of the present disclosure. 
     As illustrated in  FIGS. 1 and 2 , the connection device is configured to connect the control box  150  of the fracturing apparatus with the mounting base  101  of the fracturing apparatus. The fracturing apparatus further includes a transmission component, and the transmission component includes the transmission shaft  130 . In addition, the transmission component can further include a transmission shaft protection mask. 
     For example, the connection device can include a fixation rack  210  and a box connection mechanism  220  connected with the fixation rack  210 . The fixation rack  210  is configured to be fixedly connected with the mounting base  101 . The box connection mechanism  220  is configured to be connected with the control box  150  and drive the control box  150  to move at least from a first position to a second position relative to the fixation rack  210 . In a case that the connection device is connected with the mounting base  101  and the control box  150  is located at the first position, the control box  150  is located at a side of the transmission component in a direction perpendicular to an axis M-M of the transmission shaft  130  (i.e. a direction perpendicular to direction X) and a distance between the control box  150  and the transmission shaft is less than a predetermined distance. During the box connection mechanism  220  being moved from the first position to the second position, the control box  150  is moved away from the transmission component, to form an operation space for the transmission component at the first position. 
     For example, the control box as illustrated in  FIG. 2  is located at the first position. In this state, the control box  150  and the transmission component are arranged in the direction Y. That is, the control box  150  is located at a side of the transmission component in the direction Y, and the direction Y is perpendicular to the direction of the axis M-M of the transmission shaft  130  (the direction X). The distance between the control box  150  and the transmission shaft (for example, a distance between the control box  150  and the transmission shaft protection mask) is less a predetermined distance. That is, the distance between the control box  150  and the transmission component is relatively small. For example, the predetermined distance can be in a range from 0.1 m (meter) to 0.5 m (meter), which can be determined under actual requirements and is not limited by the embodiments of the disclosure. This arrangement can make the respective parts of the fracturing apparatus more compact and occupy less space. However, the control box  150  may shield the transmission component, which is not convenient to maintain the transmission component. 
       FIG. 3  illustrates a schematic diagram of the control box located at the second position according to at least one embodiment of the present disclosure. 
     As illustrated in  FIG. 3 , in one example, the box connection mechanism can be configured to drive the control box  150  to move at least between the first position and the second position. For example, the box connection mechanism can include a rotation shaft  221 . The rotation shaft  221  can be rotatably connected with the fixation rack  210 , and the rotation shaft  221  can be located on a side of the control box  150  and is fixedly connected with the control box  150 . The rotation shaft  221  can be rotated along with the control box  15  from the first position as illustrated in  FIG. 2  to the second position as illustrated in  FIG. 3 , around an axis Z. 
     For example, the control box  150  has a first surface  1501  (that is, a back face of the control box  150  as illustrated in  FIGS. 1 and 2 ). In a case that the control box is located at the first position, the first surface  1501  faces the transmission component, and the first surface  1501  is parallel with the axis M-M of the transmission shaft. That is, an included angle between the first surface and the axis M-M of the transmission shaft is substantially 0 degree. As illustrated in  FIGS. 2 and 3 , during the control box  150  being moved from the first position to the second position, the included angle between the first surface  1501  and the axis M-M of the transmission shaft increases gradually. When the control box  150  is moved to the second position, the included angle between the first surface and the axis M-M of the transmission shaft is 90 degrees, for example. In this way, when the fracturing apparatus is in a normal operation, the control box  150  can be located at the first position, so that the respective parts of the fracturing apparatus can be more compact. When the transmission component is required to be maintained, the control box  150  can be rotated to the second position, so that an open can be formed on a side of the transmission component and a region is empty as an operation space, which is convenient for an operator to maintain the transmission component. When the maintenance operation to the transmission component is completed, the control box  150  can be moved back to the first position. 
       FIG. 4  illustrates another schematic diagram of the control box located at the second position according to at least one embodiment of the present disclosure. 
     As illustrated in  FIG. 4 , in another example, the box connection mechanism can be configured to drive the control box  150  to move between the first position and the second position. For example, the box body connection structure can include a slide rail and a slide block (not illustrated). One of the slide rail and the slide block can be provided on a bottom of the control box  150 , and the other one of the slide rail and the slide block can be provided on the fixation rack  210 . The control box  150  can be moved forward and backward relative to the fixation rack  210 , i.e. in the direction Y, under the cooperation of the slide rail and the slide block. 
     For example, as discussed above, the control box  150  has a first surface  1501  (that is, a back face of the control box  150  as illustrated in  FIGS. 1 and 2 ). In a case that the control box  150  is located at the first position, the first surface  1501  faces the transmission component, and the first surface  1501  has a first vertical distance from the axis M-M of the transmission shaft. The first vertical distance is less than the above predetermined distance. During the control box being moved from the first position as illustrated in  FIG. 2  to the second position as illustrated in  FIG. 4 , the vertical distance of the first surface  1501  from the axis M-M of the transmission shaft increases gradually. For example, when the control box is moved to the second position, the first vertical distance of the first surface from the axis M-M of the transmission shaft increases to a second vertical distance. The second vertical distance can be larger than the predetermined distance. The second vertical distance can be determined under actual requirements which is not limited by embodiments of the disclosure. In this way, when the fracturing apparatus is in a normal operation, the control box  150  can be located at the first position, so that the respective parts of the fracturing apparatus can be more compact. In a case that the transmission component is required to be maintained, the control box  150  can be moved forward to the second position, so that the distance between the control box  150  and the transmission component increases and a region is empty as an operation space in the direction Y of the transmission component, which is convenient for an operator to maintain the transmission component. When the maintenance operation to the transmission component is completed, the control box  150  can be moved back to the first position. 
     Hereinafter, an example in which the box connection mechanism drives the control box  150  to rotate is illustrated for further explanation. 
       FIG. 5  illustrates a schematic diagram of a fixation rack and a box connection mechanism according to at least one embodiment of the present disclosure. 
     As illustrated in  FIG. 5 , the fixation rack includes a first fixation bracket  211 , a second fixation bracket  212  and a fixation shaft  213 . 
     For example, each of the first fixation bracket  211  and the second fixation bracket  212  is configured to be connected with the mounting base at its first end and have a second end extending in a first direction relative to the first end. For example, the second end extending in the first direction relative to the first end can be understood as a connection line of the second end and the first end extending in the first direction. That is, the connection line of the second end and the first end is parallel with the first direction. In  FIG. 5 , each of the first fixation bracket  211  and the second fixation bracket  212  has its back end be fixedly connected with the mounting base of the fracturing apparatus, and extends forwards from the back end in the direction Y. 
     For example, a first end of the fixation shaft  213  is fixedly connected with the first fixation bracket  211 . A second end of the fixation shaft  213  extends in a second direction relative to the first end of the fixation shaft (a connection line of the second end of the fixation shaft  2133  and the first end of the fixation shaft  2133  is parallel with the second direction). The fixation shaft  213  is rotatably connected with the box connection mechanism. For example, as illustrated in  FIG. 5 , a bottom end of the fixation shaft  213  is fixed with the first fixation bracket  211  together, and a top end of the fixation shaft  213  extends upwards in a direction Z. 
     For example, in a case that the connection device is connected with the mounting base, any two of the first direction (i.e. the direction Y), the second direction (i.e. the direction Z) and an axis of the transmission shaft (i.e. the direction X) are perpendicular to each other. 
     For example, the fixation rack can include a support rod  214 . The support rod  214  is inclinedly connected between the first fixation bracket  211  and the fixation shaft  213 , to form a fixation structure in a shape of triangular with the first fixation bracket  211  and the fixation shaft  213 . 
     For example, the box connection mechanism can include a support frame  222  and a rotation shaft  221 . 
     For example, the support frame  222  includes a bottom frame  2221  and a vertical frame  2222  fixedly connected with the bottom frame  2221 . A plane where the bottom frame  2221  is located is parallel with a plane formed by the first direction and the axis of the rotation shaft (i.e. the plane XY). In a case that the box connection mechanism is located at the first position, two sides of the bottom frame  2221  lap on the first fixation bracket  211  and the second fixation bracket  212 , respectively. The vertical frame  2222  is located at a side of the bottom frame  2221  away from the first fixation rack and the second fixation rack. For example, the vertical frame  2222  is arranged vertically at a side of the bottom frame  2221  in the second direction. The vertical frame  222  is configured to be connected with the control box. 
     For example, the bottom frame  2221  includes two longitudinal rods and two transverse rods. The two longitudinal rods are arranged in the direction X and extend in the direction Y. The two transverse rods are arranged in the direction Y and extend in the direction X. The two transverse rods are located between the two longitudinal rods. The two transverse rods and the two longitudinal rods form a structure having a shape of “II”. In a case that the box connection mechanism is located at the first position, the two longitudinal rods can lap on the first fixation bracket  211  and the second fixation bracket  212 , respectively. 
     For example, the vertical frame  222  includes two vertical beams connected with two sides of the bottom frame respectively and a transverse beam connected between the two vertical beams. For example, the two vertical beams are arranged in the direction X and extend in the direction Z. Bottom ends of the two vertical rods are connected with the two longitudinal rods of the bottom frame  2221 , respectively; two ends of the transverse rod are connected with top ends of the two vertical beams, respectively; and the two vertical beams and the transverse beam form a structure having a shape of gate arranged above the bottom frame  2221 . 
     For example, the support frame  222  further includes a first vertical rod  2223  and a second vertical rod  2224  connected with both sides of the vertical frame, respectively. The first vertical rod  2223  and the second vertical rod  2224  can be connected with two sides of the transverse beam, respectively. Both of the first vertical rod  2223  and the second vertical rod  2224  extend in the second direction. The support frame  222  can include one or more first vertical rods  2223  and one or more second vertical rods  2224 . The one or more first vertical rods  2223  are arranged on one side of the transverse beam, and the one or more second vertical rods  2224  are arranged on the other side of the transverse beam. 
     For example, a first end of the rotation shaft  221  is fixedly connected with the support frame  222 , a second end of the rotation shaft  221  extends in the second direction relative to the first end of the rotation shaft  221  (a connection line of the second end of the rotation shaft  221  and the first end of the rotation shaft  221  is parallel with the second direction), and the rotation shaft  221  is rotatably connected with the fixation shaft  213 . For example, the bottom end of the rotation shaft  221  is connected with a longitudinal rod of the bottom frame  2221 , and the top end of the rotation shaft  221  extends upward in the direction Z, so that the rotation shaft  221  is arranged vertically above the bottom frame  2221 . The rotation shaft  221  is rotatably connected with the fixation shaft  213 , for example, by a hinge etc., so that the rotation shaft  221  can rotate around the fixation shaft  213 . 
       FIG. 6  illustrates a prospective schematic diagram of the control box and the connection device from a first angle of view according to at least one embodiment of the present disclosure.  FIG. 7  illustrates a prospective schematic diagram of the control box and the connection device from a second view of angle according to at least one embodiment of the present disclosure.  FIG. 8  illustrates a schematic side view of the control box and the connection device according to at least one embodiment of the present disclosure.  FIG. 9  illustrates a schematic front view of the control box and the connection device according to at least one embodiment of the present disclosure. 
     As illustrated in  FIGS. 5 to 9 , for example, the control box includes a first control box  151  and a second control box  152 . The first control box  151  and the second control box  152  are connected with both sides of the vertical frame  2222 , respectively. The first vertical rod  2223  is configured to connect with the first control box  151 , and the second vertical rod  2224  is configured to connect with the second control box  152 . In the states as illustrated in  FIGS. 6 to 9 , the control box is located at the first position. 
       FIG. 10  illustrates a schematic diagram of the control box rotated to the second position according to at least one embodiment of the present disclosure. 
     As illustrated in  FIG. 10 , under the rotation cooperation of the fixation shaft  213  and the rotation shaft  221 , the box connection mechanism can rotate around the rotation shaft  221 . Since the control box is connected with the box connection mechanism, the box connection mechanism can drive the control box to rotate around the rotation shaft  221  together, so that the control box is rotated along the arrow from the first position of the control box as illustrated in  FIG. 6  to the second position of the control box as illustrated in  FIG. 10  to form an operation space at the original first position. 
     For example, the fixation shaft  213  is located at the second end of the first fixation bracket  211 . As illustrated in  FIGS. 5 and 6 , the fixation shaft  213  is located at the front end of the first fixation bracket  211 . Based on this arrangement, the control box can have a forward movement tendency during the rotation process, that is, the control box rotates towards a lateral and forward direction, which can avoid interference between the control box and other mechanisms located on the side of the first fixation bracket  211 . 
     For example, as illustrated in  FIG. 10 , the connection device further includes a first limitation component. The first limitation component includes a first limitation structure  231  and a second limitation structure  232 . The first limitation structure  231  is disposed on the support frame, and the second limitation structure  232  is disposed on the second fixation bracket  212 . For example, a connection piece is disposed on the bottom frame of the support frame, and the first limitation structure  231  can be a first through hole provided in the connection piece. The second limitation structure  232  can be a second through hole provided in the second fixation bracket  212 . The first limitation component can further include a pin that matches the first through hole and the second through hole in size. 
       FIG. 11  illustrates a schematic diagram of the control box rotated back to the first position according to at least one embodiment of the present disclosure. 
     As illustrated in  FIG. 11 , in a case that the control box is located at the first position, the first limitation structure and the second limitation structure cooperate with each other to lock the control box at the first position. For example, in a case that the control box is located at the first position, the first through hole is aligned with the second through hole, and the pin can be plugged into the aligned first through hole and second through hole to prevent the box connection mechanism from moving, to further prevent the control box from moving and lock the control box at the first position. 
     For example, as illustrated in  FIG. 6 , the connection device further includes a second limitation component. The second limitation component includes a third limitation structure  233  and a fourth limitation structure  234 . The third limitation structure  233  is disposed on the support frame  222 . The fourth limitation structure  234  is disposed on the first fixation bracket  211 . The third limitation structure  233  and the fourth limitation structure  234  cooperate with each other to lock the control box at the second position. For example, the third limitation structure  233  can be a third through hole provided in the bottom frame of the support frame  222 , and the fourth limitation structure  234  can be a pin  234  provided on the first fixation bracket  211 . After the box control mechanism drives the control box to rotate to the second position, the third through hole is aligned with the pin  234 , and the pin  234  can be inserted into the third through hole to prevent the box connection mechanism from moving, prevent the control box from moving and lock the control box at the second position. 
     For example, as illustrated in  FIGS. 5, 8 and 11 , the connection device further includes at least one shock absorber, and the at least one shock absorber is configured to be connected between the support frame and the control box. The at least one shock absorber includes a first shock absorber  241  and a second shock absorber  242 . The first shock absorber  241  is configured to be connected between the first vertical rod  2223  and the first control box  151  and/or connected between the second vertical rod  2224  and the second control box  152 . For example, at least one first shock absorber  241  is provided between the first control box  151  and each first vertical rod  2223 , and at least one first shock absorber  241  is also provided between the second control box  152  and each second vertical rod  2224 . The first shock absorber  241  can buffer an impact force, thereby reducing the shock of the first control box  151  and the second control box  152 . 
     For example, the second shock absorber  242  is configured to be connected between the bottom frame and the control box. At least one second shock absorber  242  can be provided at both the bottom of the first control box  151  and the bottom of the second control box  152  to further reduce the shock of the first control box  151  and the second control box  152 . 
     For example, the shock absorber includes a vibration isolator. The first shock absorber  241  and the second shock absorber  242  can be implemented as spring vibration isolators or rubber vibration isolators. 
     For example, as illustrated in  FIGS. 7 and 10 , the surface (for example, the upper surface) of the first fixation bracket  211  towards the second direction (the direction Z) is provided with a first pad plate  251 , and the first pad plate  251  is configured to be lapped with the bottom frame of the support frame  222 . For example, in a case that the control box is located at the first position, the bottom frame of the support frame  222  can lap on the first pad plate  251 . The first pad plate  251  extends in the first direction (the direction Y). A thickness of a side of the first pad plate  251  facing the second fixation bracket  212  is less than a thickness of a side of the first pad plate  251  away from the second fixation bracket  212 , to form a first inclined surface on the first pad plate  251 . In the view of angle as illustrated in  FIG. 10 , a thickness of the left side of the first pad plate  251  is larger than a thickness of the right side of the first pad plate  251 , to form an inclined surface with a high left side and a low right side. 
     For example, as illustrated in  FIGS. 7 and 10 , the surface (for example, the upper surface) of the second fixation bracket  212  towards the second direction is provided with a second pad plate  252 , and the second pad plate  252  is configured to be lapped with the bottom frame of the support frame  222 . For example, in a case that the control box is located at the first position, the bottom frame of the support frame  222  can lap on the second pad plate  252 . The second pad plate  252  extends in the first direction (the direction Y), and a thickness of a side of the second pad plate  252  close to the first end (for example, the rear end) of the second fixation bracket is larger than a thickness of a side of the second pad plate  252  close to a second end (for example, the front end) of the second fixation bracket, to form a second inclined surface on the second pad plate. For example, in the view of angle as illustrated in  FIG. 10 , a thickness of the front end of the second pad plate  252  is less than a thickness of the rear end of the second pad plate, to form an inclined surface with a low front and a high rear. 
     For example, in a case that the control box is located at the second position, due to the gravity, a side of the box connection mechanism away from the rotation shaft  213  would sink to a certain extent. During the control box being rotated from the second position back to the first position, the first inclined surface on the first pack plate  251  and the second inclined surface on the second pad plate  252  facilitate the box connection mechanism to smoothly rotate back to the first position. 
     For example, as illustrated in  FIG. 7 , the first fixation bracket  211  is provided with a via hole  260  running through the first fixation bracket  211  in the direction of the axis of the transmission shaft (the direction X), for a cable passing through the via hole to connect with the control box. 
     Another embodiment of the present disclosure further provides a control box component. The control box component includes a control box and the connection device of any one of the foregoing embodiments. In a state of the fracturing apparatus in a normal operation, the control box component can make the control box to locate at the first position, so that respective parts of the fracturing apparatus are more compact. In a case that the transmission component is required to be maintained, the control box can be moved to the second position, so that a region is empty as an operation space at a side of the transmission component, which is convenient for an operator to maintain the transmission component in the operation space. 
     Another embodiment of the present disclosure further provides a fracturing apparatus, including a mounting base, a transmission component, a control box, and the connection device of any of the foregoing embodiments. 
     For example, the fracturing apparatus can be as illustrated in  FIG. 1 . The transmission component includes a transmission shaft  130  and a transmission shaft mask. The control box  150  is connected with the mounting base (not illustrated in  FIG. 1 ) by the connection device. In addition, the fracturing apparatus can further include a bottom skid  160 , an exhaust muffler  171 , a muffler cabin  172 , an air intake cabin  180 , a radiator  190  and other devices. 
     For example, in a state of the fracturing apparatus in a normal operation, the control box is located at the first position, so that the respective parts of the fracturing apparatus are more compact. In a case that the transmission component is required to be maintained, the control box can be moved to the second position, so that a region is empty as an operation space at a side of the transmission component, which is convenient for an operator to maintain the transmission component in the operation space. 
     The following statements should be noted: 
     (1) The accompanying drawings related to the embodiments of the present disclosure involve only the structures in connection with the embodiments of the present disclosure, and other structures can be referred to common designs. 
     (2) In case of no conflict, features in one embodiment or in different embodiments of the present disclosure can be combined to obtain new embodiments. 
     The foregoing are merely exemplary embodiments of the disclosure, but is not used to limit the protection scope of the disclosure. The protection scope of the disclosure shall be defined by the attached claims.