Patent Publication Number: US-2019169832-A1

Title: Light steel connecting structure for house and mounting method

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a Continuation-in-part application of PCT Application No. PCT/CN2017/094701 filed on Jul. 27, 2017, which claims the benefit of Chinese Patent Application No. 201610613393.2 filed on Jul. 29, 2016. All the above are hereby incorporated by reference. 
    
    
     TECHNICAL FIELD 
     The present invention relates to a connecting structure for a light steel house and an mounting method. 
     BACKGROUND ART 
     In the construction industry, workers often build prefabricated houses on their own for dwelling. 
     At present, the Chinese patent application published as No. CN105780929A discloses a prefabricated house in the form of an assembled shelter shed, which comprises a shed top and four vertical mechanisms, wherein the shed top is arranged above the four vertical mechanisms; the vertical mechanism comprises a square steel, a pre-embedded pipe, a circular steel pipe and a concrete base; the square steel is detachably fixed on the concrete base; the pre-embedded pipe is positioned in the square steel, the top end and the bottom end of the pre-embedded pipe are respectively welded with an upper steel sheet and a lower steel sheet which are also respectively welded with the square steel; and the circular steel pipe passes through the upper steel sheet and is inserted into the pre-embedded pipe, and the circular steel pipe, the pre-embedded pipe and the square steel are fixedly connected through a tension bolt. 
     This prefabricated house in the form of an assembled shelter shed is simple in structure, and in daily use, when an earthquake occurs or a large transport vehicle passes by, a certain vibration is generated, and it is extremely easy for the vibration to cause the above-mentioned bolts to loose and disengage, resulting in disability of the circular steel pipes, the pre-embedded pipes and the square steel, and the prefabricated house in the form of an assembled shelter shed may fall apart. 
     SUMMARY OF THE INVENTION 
     In view of the disadvantages of the prior art, it is an object of the present invention to provide a connecting structure for a light steel house, in which a support block is fixed in a receiving socket by gravity, and at the same time, an support plate and an pillar abut against each other to generate a friction force, so as to avoid the situation that a beam disengages with the pillar. 
     In order to achieve the above object, the present invention provides the following technical solution: a connecting structure for a light steel house comprises a support plate, wherein the support plate is fixedly connected to a beam and integrally connected with a support block, one end of the support block is connected with the support plate, the other end extends in the direction away from the support plate and is inclined in a vertical direction, fixing holes are formed in the pillar, the fixing hole comprises two opposite inclined surfaces which form a receiving socket for abutting against the support block that is placed in the receiving socket. 
     With the technical solution adopted and by gravity, the beam applies vertical downward pressure to the support block that passes through the fixing hole, the configuration of the two surfaces inclined towards each other enables the receiving socket to generate pressure on both sides of the support block, and the pressure generates friction force; and meanwhile, the support plate displaces relative to the pillar, surfaces of the support and fixing plates abut against each other to generate pressure which in turn generates friction force, the support block and the pillar are fixed by the combination of the friction force and gravity, and the support block and the pillar can be fixed by themselves by gravity when a certain vibration is generated therebetween, so that the occurrence of falling apart caused by the disengagement of the support block with the pillar is avoided; a screw is no more necessary, it&#39;s only required that the support block be snapped into the fixing hole to complete the assembly of the pillar and the beam, and the support block can be pulled out from the fixing hole to complete the separation of the pillar and the beam, so that the assembly and disassembly are simple and convenient for workers, with a greatly improved production efficiency. 
     It is another object of the present invention to provide a connecting structure for a light steel house which enables a support block to be fixed in a receiving socket by gravity, and meanwhile enables the support plate and the fixing plate to abut against each other to generate a friction force, thereby achieving the purpose of preventing the beam from disengagement with the pillar. 
     To achieve the above object, the present invention provides the following technical solution: a connecting structure for a light steel house comprising a support plate and a fixing plate, wherein the support plate is fixedly connected to a beam, the fixing plate is fixedly connected to an pillar, the support plate is integrally connected with a support block, one end of the support block is connected to the support plate, and the other extends in a direction away from the support plate and is inclined in a vertical direction, the fixing plate is provided with fixing holes, the fixing hole comprising two opposite inclined surfaces which form a receiving socket for abutting against the support block, and the support block is placed in the receiving socket. 
     With the technical solution adopted and by gravity, the beam applies vertical downward pressure to the support block that passes through the fixing hole, the configuration of the two surfaces inclined to each other enables the receiving socket to generate pressure on both sides of the support block, and the pressure generates friction force; and meanwhile, the support plate displaces relative to the pillar, surfaces of the support and fixing plates abut against each other to generate pressure which in turn generates friction force, the support block and the pillar are fixed by the combination of the friction force and gravity, and the support block and the fixing plate can be fixed by themselves by gravity when a certain vibration is generated therebetween, so that the occurrence of falling apart caused by the disengagement of the support block with the fixing plate is avoided; a screw is no more necessary, it&#39;s only required that the support block be snapped into the fixing hole to complete the assembly of the pillar and the beam, and the support block can be pulled out from the fixing hole to complete the separation of the pillar and the beam, so that the assembly and disassembly are simple and convenient for workers, with a greatly improved production efficiency. 
     The present invention is further configured that an elastic groove is provided on the support block at its one side facing the support plate, the elastic groove being configured to be vertical in its length direction. 
     With the technical solution adopted, since the receiving socket can generate pressure on both sides of the support block, the pressure can generate a stressed force within the support block, as a result the support block may easily break from inside, while the elastic groove can effectively eliminate the stressed force within the support block, which gives the support block a certain space for deformation, so that the support block is not easily damaged, and when the beam moves relative to the pillar due to vibration, the support block is deformed to keep the support block in contact with the receiving socket, so that the beam is less likely to disengage with the pillar. 
     The present invention is further configured that a guide slope surface is provided on the support block at its one side facing the support plate, and the receiving socket is configured to abut against the guide slope surface. 
     With the above technical solution adopted, the guide slope surface can increase the contact area between the support block and the receiving socket, and when the beam moves relative to the pillar, the pressure caused by the receiving socket upon the support block can be reduced, and thus the service life of the support block can be further prolonged, meanwhile, an increased stability of the connection between the support block and the receiving socket can enable that a relative movement between the support plate and the receiving socket is less likely to happen, and further, the pillar and the beam can be prevented from falling apart. 
     The present invention is further configured that the support block is arc-shaped at the end away from the support plate. 
     With the above technical solution adopted, when it is necessary to pass the support block through the fixing hole for connecting the support plate with the receiving socket, the arc-shaped end of the support block can play a role of guiding the connection between the support block and the fixing hole, so as to facilitate mounting the support block and the fixing hole by a worker, and meanwhile, a person may not easily get injured when bumped against the support block. 
     The present invention is further configured that a reinforcing plate is fixed at the connection portion of the support block and the support plate, and the reinforcing plate is placed on the support block at its side opposite the support plate. 
     With the above technical solution adopted, the support plate applies downward pressure to the fixed plate by gravity, and in turn the inner wall of the receiving socket applies upward pressure to the support plate because of the interaction effect, and the reinforcing plate can effectively prevent the connection portion of the support block and the support plate from being broken due to the upward pressure; when vibration is generated between the pillar and the beam, the impact force generated by the vibration may not easily damage the support block, so that the reinforcing plate plays a good role in not only protecting the support block, but increasing the bearing capacity of the support block. 
     The present invention is further configured to also comprise a positioning rod, the support plate is provided with first positioning holes, the fixing plate is provided with second positioning holes which are axially paralleling the first positioning holes, and the positioning rod sequentially passes through the first positioning hole and the second positioning hole. 
     With the above technical solution adopted, the positioning rod passes through the first positioning hole and the second positioning hole, and when a relative displacement between the pillar and the beam tends to occur due to vibration, the inner walls of the first positioning hole and the second positioning hole collide with the positioning rod, so that the relative displacement between the support plate and the fixed plate can be avoided, and thus a displacement of the pillar with the beam can be effectively avoided, with the connection stability of the pillar and the beam increased and the bearing capacity of the support block can be effectively enhanced simultaneously. 
     The present invention is further configured that one end of the positioning rod is provided with a guide arc surface that is arranged to abut against the inner walls of the first positioning hole and the second positioning hole. 
     With the above technical solution adopted, after the support plate and the fixed plate are connected by means of the support block, the guide arc surface is provided to facilitate the positioning rod to pass through the first positioning hole and the second positioning hole, thereby improving the convenience of mounting. 
     The present invention also provides a method for mounting the connecting structure for a light steel house, enabling the beam and the pillar less prone to be disengaged, comprising the steps of: 
     step 1: placing the support plate above the fixing plate, and then moving the support plate downwards obliquely, such that the support block passes through the fixing hole from top to bottom;
 
step 2: applying downward pressure to the support plate to generate friction force between the support block and the inclined surface, to make the support block to deform slightly inwards, and meanwhile to make the axes of the first positioning hole and the second positioning hole to deviate from each other; and
 
Step 3: sequentially passing the positioning rod through the second positioning hole and the first positioning hole to make sure that the second positioning hole is coaxial with the first positioning hole.
 
     With the above technical solution adopted, a downward pressure is applied to the support plate, so that a certain friction force is generated between the support block and the fixing hole to make the supporting plate and the fixing plate less likely to disengage, and then the positioning rod is arranged to pass through the first positioning hole and the second positioning hole, to further increase the pressure generated between the support block and the fixing hole, so as to achieve a more stable connection between the support plate and the fixing plate, further reducing the chance that the beam and the pillar disengage. 
     In summary, the present invention has the following advantages: 
     1. after the support block passes through the fixing hole, the surface of the support plate is made to abut against the surface of the fixing plate or the pillar by gravity, and at this time, since the first positioning hole and the second positioning hole are not arranged coaxially, namely, the axes of the first positioning hole and the second positioning hole are arranged deviated from each other up and down, a pressure can be generated on the inner walls of the first positioning hole and the second positioning hole when the positioning rod passes through them, such that the support plate and the fixing plate have a tendency of relative movement which pre-tightens the support plate and the fixing plate to ensure a more compact connection therebetween, improving the stability of the connection between the support plate and the fixing plate, and further reducing the possibility that the pillar and the beam disengage; and
 
2. a plastic hinge, formed between the side beam and the pillar of the connecting structure for a light steel house, is superior to the common rigid connection and hinged connection of a steel structure, and the members on both sides of the plastic hinge can slightly rotate to ensure that vibration forces generated by an earthquake on the members can be dissipated to achieve the anti-seismic effect.
 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of the structure of the support plate; 
         FIG. 2  is a view of  FIG. 1  in direction A; 
         FIG. 3  is an enlarged view of  FIG. 2  at B; 
         FIG. 4  is a schematic view of the structure of the fixing plate; 
         FIG. 5  is a schematic view of the structure of Embodiment 1; 
         FIG. 6  is a schematic view of the structure of a positioning rod; 
         FIG. 7  is a schematic view of a light steel connecting structure for a house; 
         FIG. 8  is a schematically exploded view of  FIG. 7  at D. 
     
    
    
     Reference numerals:  1 . beam;  2 . pillar;  3 . support plate;  31 . mounting portion;  32 . connection portion;  33 . dismounting hole;  34 . first positioning hole;  4 . support block;  41 . elastic groove;  42 . guide slope surface;  43 . limiting groove;  44 . reinforcing plate;  5 . fixing plate;  52 . second positioning hole;  53 . fixing hole;  531 . inclined surface;  532 . flatwise surface;  54 . receiving socket;  6 . positioning rod;  61 . guide arc surface. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     A light steel connecting structure for a house of the present invention will be further described with reference to  FIGS. 1 to 8 . 
     Embodiment 1 
     A light steel connecting structure for a house, as shown in  FIGS. 1 and 4 , comprises a support plate  3  and a fixing plate  5 . The support plate  3  is elongated and extended in a vertical direction, and comprises a connection portion  32  and an mounting portion  31  integrated therewith, wherein the connection portion  32  and the mounting portion  31  are tabulate, and they are configured to be perpendicular to one another in their width directions. 
     As shown in  FIG. 1 , the ends of the beam  1  and the connection portion  32  are welded together. Four support blocks  4  are integrally connected to the mounting portion  31 , being regularly arranged along the length direction of the mounting portion  31 , with equal distances between adjacent ones among them. 
     As shown in  FIGS. 2 and 3 , one end of the support block  4  is connected to the mounting portion  31 , and the other end is suspended. The end of the support block  4  away from the mounting portion  31  is inclined downward in the vertical direction and is configured in an arc shape. The support block  4  is provided with an elongated elastic groove  41  on its one side facing the mounting portion  31 . The mounting portion  31  is also provided with four dismounting holes  33  along its length, each disassembly hole  33  being positioned below and near the connection portion between the support block  4  and the mounting portion  31 . The elastic groove  41  is passed through the dismounting hole  33  and extends to the side of the mounting portion  31  opposite the support block  4 . 
     The left and right sides of the support block  4  are also provided with guide slope surfaces  42 , which are planes. The support block  4  is also provided with a limiting groove  43  on its one side facing the mounting portion  31 . 
     As shown in  FIG. 1 , a reinforcing plate  44  is welded at the connection portion of the mounting portion  31  with each support block  4 , and the reinforcing plate  44  is positioned on the support block  4  at its one side opposite the mounting portion  31  to resist a stress concentration at the connection portion of the support block  4  and the mounting portion  31 . 
     Four circular first positioning holes  34  are formed in the mounting portion  31 , being arranged along the length of the mounting portion  31 , with equal distances between adjacent ones among the first positioning holes  34  which are disposed below the dismounting holes  33 . 
     As shown in  FIGS. 4 and 5 , the fixing hole  53  is provided in a hexagonal shape and includes four inclined surfaces  531  and two horizontally disposed flatwise surfaces  532 , and the width of the inclined surface  531  is greater than that of the flatwise surface  532 . A receiving socket  54  is formed between the opposite two inclined surfaces  531 . 
     A second positioning hole  52  having a circular shape is also formed below each fixing hole  53 , and the diameters of the first positioning hole  34  and the second positioning hole  52  are equal. 
     As shown in  FIG. 6 , the outer wall of one end of the positioning rod  6  is provided with a guide arc surface  61 . The diameter of the end of the positioning rod  6  away from the guide arc surface  61  is equal to the inner diameter of the first positioning hole  34 . The middle of the positioning rod  6  is bent in an arc shape, when having passed through the first positioning hole  34  and the second positioning hole  52 , the positioning rod  6  can only be taken out along an arc track matched with the arc shape of the positioning rod  6  itself, and vibration is generally linear which cannot cause the positioning rod  6  to be removed, so that the positioning rod  6  enhances the effect of preventing disengagement. 
     In summary, during use of the present invention, at first, the arc-shaped end of the support block  4  is taken to pass through the fixing hole  53 , and the support plate  3  slides along the guide slope surface  42  of the support block  4  by gravity, so that the surface of the mounting portion  31  abuts against that of the fixing plate  5 . And meanwhile, the support block  4  is embedded in the receiving socket  54  which generates pressure on the guide slope surface  42  of the support block  4 , so that the support block  4  is deformed towards the side close to the elastic groove  41 , reducing the width of the elastic groove  41 , and thus preventing the support block  4  from being damaged due to being too much forced; at this time, the first positioning hole  34  is offset from the second positioning hole  52 , and the connection line between the axes of the first positioning hole  34  and the second positioning hole  52  is inclined, the first positioning hole  34  is disposed above the second positioning hole  52 , an arc-shaped hole is formed because of the overlapped portion of the first positioning hole  34  and the second positioning hole  52 , the positioning rod  6  provided with the guide arc surface  61  is passed through the arc-shaped hole, and as it passes through, the outer wall of the positioning rod  6  generates pressure on the inner walls of the first positioning hole  34  and the second positioning hole  52 , so that the first positioning hole  34  moves vertically downwards, and the second positioning hole  52  moves vertically upwards, and when the positioning rod  6  completely passes throughout the first positioning hole  34  and the second positioning hole  52 , the first positioning hole  34  and the second positioning hole  52  reach coaxial; the positioning rod  6  generates a pre-tightening force on the support plate  3  and the fixing plate  5  between which a more compact fit is achieved. 
     If a certain vibration is generated between the beam  1  and the pillar  2 , when the vibration is vertical, the vibration power applies shear force to the positioning rod  6  through the inner walls of the first positioning hole  34  and the second positioning hole  52 , and the positioning rod  6  offsets the shear force through an internal force by itself; when the vibration is horizontal, and the vibration power is along the axial direction of the positioning rod  6 , the vibration power can detach the support plate  3  from the fixed plate  5 , but the lower edge of the fixing hole  53  is enabled to be placed in the limiting groove  43 , preventing the fixing hole  53  from being separated from the support block  4 , and after the vibration power fades away, the support plate  3  and the fixing plate  5  can be fixed again by gravity; when the vibration power is along the radial direction of the positioning rod  6 , since the guide slope surface  42  is in contact with the inclined surface  531  in the receiving socket  54 , the support plate  3  can be prevented from separating from the fixing plate  5 ; as a result, the beam  1  and the pillar  2  can be prevented from falling apart due to the vibration power. 
     In the present embodiment, the pillar  2 , the beam  1 , the support plate  3  and the fixing plate  5  are all made of steel. 
     Embodiment 2 
     A connecting structure for a light steel house, as shown in  FIGS. 7 to 8 , differs from Embodiment 1 in that the fixing plate  5  is omitted. 
     As shown in  FIG. 8 , the pillar is quadrangular, and each pillar  2 , at its ends, is provided with fixing holes  53  and second positioning holes  52  which are both arranged along the height direction of the pillar  2 . 
     As described in Embodiment 1, the support block  4  on the support plate  3  is passed through the fixing hole  53 , and then gets fixed in the fixing hole  53  by gravity; the positioning rod  6  is sequentially passed through the support plate  3  and the pillar  2 , so that the support plate  3  is displaced downward in the vertical direction, and the pillar  2  is displaced upward in the vertical direction, so that the support plate  3  and the pillar  2  generate a certain pre-tightening force. 
     If a certain vibration is generated between the pillar  2  and the beam  1 , when the vibration power is in the vertical direction, the pillar  2  and the beam  1  are prevented from disengagement by gravity of the beam  1  and the positioning rod  6 ; when the vibration power is in the horizontal direction, the positioning rod  6  is displaced in the horizontal direction, so that the bent portion of the positioning rod  6  abuts against and the inner wall of the pillar  2 , without being separated from the pillar  2 , thereby improving the structural strength, and making it difficult for the pillar  2  and the beam  1  to fall apart. 
     Embodiment 3 
     As shown in  FIGS. 1 to 8 , a method for mounting a connecting structure for a light steel house comprises the steps of: 
     step 1: placing the support plate  3  above the fixing plate  5 , and then moving the support plate  3  downwards obliquely, such that the support block  4  passes through the fixing hole  53  from top to bottom;
 
step 2: applying downward pressure to the support plate  3  to generate friction force between the support block  4  and the inclined surface  531 , to make the support block  4  to deform slightly inwards, and meanwhile to make the axes of the first positioning hole  34  and the second positioning hole  52  to deviate from each other; and
 
Step 3: sequentially passing the positioning rod  6  through the second positioning hole  52  and the first positioning hole  34  to make sure that the second positioning hole  52  is coaxial with the first positioning hole  34 .
 
     The above is only the description of preferred embodiments of the present invention, and the scope of the present invention is not limited to the above embodiments; technical solutions under the concept of the present invention all fall within the scope of the present invention. And it should be noted that several improvements and modifications implemented by those skilled in the art, without departing from the principles of the invention, are regarded as within the scope of the present invention.