Abstract:
This compressor inserting and removing device ( 1 ) is provided with: an intermediate supporting portion ( 4 ) which supports a bundle ( 32 ), prior to insertion from a horizontal axis (L 1 ) direction into a compressor casing ( 34 ) taking the form of a tube centered around the horizontal axis (L 1 ), from an outer peripheral side of the bundle ( 32 ), at a position that is closer to the insertion side of the bundle ( 32 ) than an end portion ( 32   d ) on the side opposite to the insertion side of the bundle ( 32 ); a moving portion ( 10 ) which makes it possible for the intermediate supporting portion ( 4 ) and the compressor casing ( 34 ) to move relative to one another in the horizontal axis L 1  direction; a threaded rod ( 12 ) which extends parallel to the horizontal axis (L 1 ), and which is fixed at a distal end ( 12   a ) thereof to a fixing hole ( 34   b ) formed in an end surface ( 34   a ) at the insertion side of the compressor casing ( 34 ), and which passes through through-holes ( 6   a  and  7   a ) formed in the intermediate supporting portion ( 4 ); and a nut ( 13 ) which is attached to the threaded rod ( 12 ), in such a way as to be capable of coming into contact with the intermediate supporting portion ( 4 ), from the side that is closer to the rear end portion ( 32   d ) of the bundle ( 32 ) than the intermediate supporting portion ( 4 ).

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to an inserting and removing device for a compressor and a method of inserting and removing a bundle. 
       BACKGROUND ART 
       [0002]    In general, in a vertical separation type compressor, an approximately columnar bundle in which product parts such as a rotor or a stationary part are built can be inserted into the inside of a cylindrical compressor casing or can be extracted from the compressor casing. 
         [0003]    For example, PTL 1 discloses an inserting and removing device for inserting and removing a bundle of a compressor with respect to a compressor casing. The inserting and removing device disclosed in PTL 1 includes a plate-shaped member which is attached to an end portion on a side opposite to an insertion side in an insertion direction of the bundle with respect to the compressor casing, and a puller rod which is screwed to the plate-shaped member and is inserted into a hole of the compressor casing. 
       CITATION LIST 
     Patent Literature 
       [0004]    [PTL 1] Japanese Unexamined Patent Application Publication No. 2012-177337 
       SUMMARY OF INVENTION 
     Technical Problem 
       [0005]    In the technology disclosed in PTL 1, the puller rod which is longer than the entire length of the bundle in the insertion direction of the bundle with respect to the compressor casing is required. An object of the present invention is to provide a small-sized inserting and removing device for a compressor and a method of inserting and removing a bundle using the same. 
       Solution to Problem 
       [0006]    According to an aspect of the present invention, there is provided an inserting and removing device for a compressor, including: an intermediate supporting portion which supports a bundle before being inserted into a compressor casing formed in a tubular shape about a horizontal axis in a direction of the horizontal axis, from an outer peripheral side of the bundle at a position closer to an insertion side than an end portion on a side opposite to the insertion side of the bundle; a moving portion which can move the intermediate supporting portion and the compressor casing relative to each other in the direction of the horizontal axis; a threaded rod which extends to be parallel to the horizontal axis, has a distal end fixed to a fixing hole formed on an end surface on the insertion side of the compressor casing, and is inserted into a through-hole formed in the intermediate supporting portion; and a nut which is attached to the threaded rod so as to come into contact with the intermediate supporting portion from a side closer to the end portion of the bundle than the intermediate supporting portion. 
         [0007]    According to the inserting and removing device for a compressor of the aspect, it is possible to use the threaded rod which is shorter than the entire length of the bundle in a direction of a center axis of the bundle in a state where the center axis of the bundle is in the direction of the horizontal axis. Accordingly, the size of the inserting and removing device for a compressor is reduced. 
         [0008]    The inserting and removing device for a compressor of the aspect may further include an end support portion which has a through-hole which is coaxially formed with the through-hole of the intermediate supporting portion and into which the threaded rod can be inserted, and supports the end portion. 
         [0009]    In this case, the threaded rod can be easily replaced from the intermediate supporting portion to the end support portion, and it is possible to move the bundle to a specified position inside the compressor casing using the threaded rod and the nut or it is possible to move the bundle from a specified position inside the compressor casing using the threaded rod and the nut. 
         [0010]    The intermediate supporting portion may include a curved plate which is formed in a curved shape following a shape of an outer periphery of the bundle, a first support plate which includes the through-hole, extends in a direction orthogonal to a center axis of the through-hole, and is fixed to the curved plate, a second support plate which extends to be parallel to the first support plate at a position separated from the first support plate in the direction of the center axis of the through-hole, and has a second through-hole which is coaxially formed with the through-hole and into which the threaded rod can be inserted, a seat plate which connects the first support plate and the second support plate to each other, and a rib plate which connects the first support plate and the second support plate at a position separated from the seat plate. 
         [0011]    In this case, since the first support plate and the second support plate are reinforced by the seat plate and the rib plate, the weight of intermediate supporting portion is reduced and rigidity thereof increases. 
         [0012]    According to another aspect of the present invention, there is provided a method of inserting and removing a bundle, including: a step of connecting a position of an outer peripheral surface of a bundle closer to an insertion side of a bundle inserted into a compressor casing than an end portion on a side opposite to the insertion side and the compressor casing to each other by an intermediate supporting portion which supports the bundle and a threaded rod which is inserted into the intermediate supporting portion, extends in an insertion direction of the bundle with respect to the compressor casing, and can be fixed to the compressor casing; and a step of moving the bundle and the compressor casing relative to each other in the insertion direction by rotating a nut screwed to the threaded rod around a center axis of the threaded rod in a state where the nut abuts on the intermediate supporting portion. 
         [0013]    According to the method of inserting and removing a bundle of the aspect, since it is possible to use the threaded rod which is shorter than the entire length of the bundle, it is possible to insert and remove the bundle with respect to the compressor casing in a space where the bundle and the compressor casing are arranged in the insertion direction of the bundle. 
       Advantageous Effects of Invention 
       [0014]    According to the present invention, it is possible to provide a small-sized inserting and removing device for a compressor and a method of inserting and removing a bundle using the same. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0015]      FIG. 1  is a schematic perspective view of a compressor which is assembled and disassembled by an inserting and removing device for a compressor according to an embodiment of the present invention. 
           [0016]      FIG. 2  is a schematic side view of a bundle of the compressor. 
           [0017]      FIG. 3  is a schematic side view of the bundle. 
           [0018]      FIG. 4  is a schematic rear view of the compressor. 
           [0019]      FIG. 5  is a plan view of an inserting and removing device for a compressor of the embodiment. 
           [0020]      FIG. 6  is a front view of an intermediate supporting portion of the inserting and removing device for a compressor. 
           [0021]      FIG. 7  is a side view of the intermediate supporting portion of the inserting and removing device for a compressor. 
           [0022]      FIG. 8  is a side view showing a portion of a moving portion of the inserting and removing device for a compressor. 
           [0023]      FIG. 9  is a side view showing a state where a traveling rod is attached to the intermediate supporting portion of the inserting and removing device for a compressor. 
           [0024]      FIG. 10  is a rear view of the inserting and removing device for a compressor. 
           [0025]      FIG. 11  is a flowchart showing a method of inserting and removing a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0026]      FIG. 12  is an explanatory view for explaining an insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0027]      FIG. 13  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0028]      FIG. 14  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0029]      FIG. 15  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0030]      FIG. 16  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0031]      FIG. 17  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0032]      FIG. 18  is an explanatory view for explaining the insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
           [0033]      FIG. 19  is a side view showing an intermediate supporting portion of a modification example of the embodiment. 
           [0034]      FIG. 20  is a front view showing the intermediate supporting portion of a modification example of the present embodiment. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0035]    An embodiment of the present invention will be described. 
         [0036]    An inserting and removing device  1  for a compressor (hereinafter, referred to an “inserting and removing device”) of the present embodiment is a device which is used so as to assemble and disassemble the compressor  31 . First, a configuration of a compressor  31  which is assembled and disassembled by the inserting and removing device  1  of the present embodiment will be described.  FIG. 1  is a schematic perspective view of a compressor which is assembled and disassembled by the inserting and removing device for a compressor of the present embodiment.  FIG. 2  is a schematic side view of a bundle of the compressor.  FIG. 3  is a schematic side view of the bundle.  FIG. 4  is a schematic rear view of the compressor. 
         [0037]    As shown in  FIG. 1 , the compressor  31  is a vertical division type compressor which is horizontally provided, and includes an approximately columnar bundle  32  and a compressor casing  34  (hereinafter, referred to as a “casing”). 
         [0038]    As shown in  FIGS. 2 and 3 , the bundle  32  is an approximately columnar member in which product parts (not shown) such as rotors or stationary parts are accommodated. Attachment holes  32   b  for attaching traveling plates  5  of the inserting and removing device  1  are provided on an outer peripheral surface  32   a  of the bundle  32 . 
         [0039]    As shown in  FIGS. 2 and 3 , side rollers  33  are installed downward at the two locations on the outer periphery of a distal end portion  32   c  of the bundle  32 . The side rollers  33  are rollers which roll on rails  3  of a bundle stand  2  and rotate in a casing  34 . 
         [0040]    The casing  34  shown in  FIGS. 1 and 4  is mounted on an upper surface of a casing stand  35  such that the axial direction of the casing  34  is horizontal and is a member which is formed in a tubular shape about a horizontal axis L 1 . Fixing holes  34   b  into which traveling rods  12  of the inserting and removing device  1  are inserted are formed on an end surface  34   a  of an insertion side of the casing  34  into which the bundle  32  is inserted. Each of the fixing holes  34   b  is a bottomed hole in which the center axis extends to be parallel to the horizontal axis L 1  of the casing  34 , and has screw grooves, to which the traveling rod  12  is screwed, inside the fixing hole  34   b.    
         [0041]    Next, the configuration of the inserting and removing device  1  of the present embodiment for inserting and removing the bundle  32  of the compressor  31  with respect to the casing  34  of the compressor  31  will be described.  FIG. 5  is a plan view of the inserting and removing device for a compressor of the present embodiment.  FIG. 6  is a front view of an intermediate supporting portion of the inserting and removing device for a compressor of the present embodiment.  FIG. 7  is a side view of the intermediate supporting portion of the inserting and removing device for a compressor of the present embodiment.  FIG. 8  is a side view showing a portion of a moving portion of the inserting and removing device for a compressor of the present embodiment.  FIG. 9  is a side view showing a state where the traveling rod is attached to the intermediate supporting portion of the inserting and removing device for a compressor of the present embodiment.  FIG. 10  is a rear view of the inserting and removing device for a compressor of the present embodiment. 
         [0042]    As shown in  FIG. 5 , the inserting and removing device  1  includes the bundle stand  2 , a pair of intermediate supporting portions  4 , moving portions  10  (refer to  FIG. 6 ), the traveling rods  12  (threaded rods), nuts  13 , and a pair of end support portions  14 . 
         [0043]    As shown in  FIGS. 5 and 10 , the bundle stand  2  includes linear rails  3 . In the present embodiment, the bundle stand  2  supports the intermediate supporting portions  4  and the end support portions  14  on the rails  3  such that the intermediate supporting portions  4  and the end support portions  14  can move in the insertion direction of the bundle  32  with respect to the casing  34 . 
         [0044]    As shown in  FIGS. 5 and 6 , the pair of intermediate supporting portions  4  has a first intermediate supporting portion  4 A and a second intermediate supporting portion  4 B so as to support the bundle  32  from the outer peripheral side of the bundle  32  at two locations which are separated from each other is a state where a center axis L 2  of the bundle  32  is interposed therebetween. The first intermediate supporting portion  4 A and the second intermediate supporting portion  4 B are bilaterally symmetrical in a state of being used so as to come into contact with the outer peripheral surface  32   a  of the bundle  32 . Hereinafter, the configuration of the first intermediate supporting portion  4 A will be described, and descriptions of portions which are inverted structures with respect to the first intermediate supporting portion  4 A in the configuration of the second intermediate supporting portion  4 B will be omitted. 
         [0045]    As shown in  FIGS. 6 and 7 , the first intermediate supporting portion  4 A includes the traveling plate  5  which supports the bundle  32  from the outer peripheral side, a first support plate  6  and a second support plate  7  which are fixed to the traveling plate  5 , and a seat plate  8  and a rib plate  9  which connect the first support plate  6  and the second support plate  7  to each other. 
         [0046]    The traveling plate  5  is a curved plate having a curved shape following the shape of the outer peripheral surface  32   a  of the bundle  32  shown in  FIGS. 2 and 3 . As shown in  FIGS. 5 and 6 , the traveling plate  5  supports the bundle  32  before being inserting into the casing  34  in the direction of the horizontal axis L 1  at a position closer to the insertion side of the bundle  32  than an end portion  32   d  (hereinafter, referred to as a “rear end portion) on a side opposite to the end portion  32   c  (hereinafter, referred to as a “distal end portion”) on the insertion side of the bundle  32 . 
         [0047]    As shown in  FIGS. 6 and 7 , through-holes  5   a  through which screws are inserted so as to fix the traveling plates  5  and the bundle  32  are formed in the traveling plate  5 . In addition, the positions, numbers, and dimensions of the through-holes  5   a  formed on the traveling plates  5  are determined so as to appropriately fix the traveling plates  5  to the attachment holes  32   b  which are formed in the bundle  32  according to the configuration (refer to  FIGS. 2 and 3 ) of the outer peripheral surface  32   a  of the bundle  32 . 
         [0048]    As shown in  FIGS. 6 and 9 , the first support plate  6  is a plate-shaped member having a first through-hole  6   a  into which the traveling rod  12  is inserted. The first support plate  6  extends in a direction orthogonal to the center axis of the first through-hole  6   a  into which the traveling rod  12  is inserted. The first support plate  6  is fixed to a side opposite to the side which comes into contact with the outer peripheral surface  32   a  of the bundle  32  in the outer surface of the traveling plate  5 . 
         [0049]    The second support plate  7  is a plate-shaped member which extends to be parallel to the first support plate  6  at a position separated from the first support plate  6  in the direction of the center axis of the first through-hole  6   a  formed in the first support plate  6 . A second through-hole  7   a  which is coaxial with the first through-hole  6   a  of the first support plate  6  is formed in the second support plate  7 . The second through-hole  7   a  is a hole having an inner diameter into which the traveling rod  12  can be inserted. 
         [0050]    The seat plate  8  is a plate-shaped member which is fixed to each of the first support plate  6  and the second support plate  7  by welding or the like in a state where each of the first support plate  6  and the second support plate  7  is disposed. 
         [0051]    The moving portion  10  can be attached to the seat plate  8  by screwing or the like. 
         [0052]    The rib plate  9  is a plate-shaped member which connects the first support plate  6  and the second support plate  7  to each other at a position separated from the seat plate  8 . The rib plate  9  is a reinforcing member which prevents distortion of the first support plate  6  and the second support plate  7 . 
         [0053]    As shown in  FIGS. 6 and 10 , each of the moving portions  10  includes a bogie  11  which travels on the rail  3  of bundle stand  2 . The bogies  11  can move the pair of intermediate supporting portions  4  and the casing  34  relative to each other in the direction of the horizontal axis L 1  of the casing  34 . In the present embodiment, the pair of intermediate supporting portions  4  to which the bogies  11  are attached moves with respect to the casing  34  which is in a fixed state. 
         [0054]    In addition, the moving portions  10  further include bogies  11 A which travel on the rails  3  of the bundle stand  2  so as to move the end support portions  14  and the casing relative to each other in the direction of the horizontal axis L 1  of the casing  34 . 
         [0055]    In the present embodiment, since the direction of the bundle stand  2  is positioned with respect to the casing  34  such that the longitudinal direction of each of the rails  3  and the horizontal axis L 1  of the casing  34  are parallel to each other, it is possible to move the pair of intermediate supporting portions  4  and the end support portions  14 , and the casing  34  relative to each other in the direction of the horizontal axis L 1  of the casing  34 . 
         [0056]    Each of the traveling rods  12  shown in  FIGS. 5 and 9  is a threaded rod which has a distal end fixed to the fixing hole  34   b  (refer to  FIG. 1 ) formed in the casing  34  and is inserted into the first through-hole  6   a  and the second through-hole  7   a  of each of the pair of intermediate supporting portions  4 . Screw threads corresponding to screw grooves of the fixing hole  34   b  of the casing  34  are formed on the outer peripheral surface of the traveling rod  12 . 
         [0057]    As shown in  FIGS. 5 and 9 , nuts  13  include first nuts  13 A which are attached to the traveling rods  12  so as to come into contact with the pair of intermediate supporting portions  4  from the side closer to the rear end portion  32   d  of the bundle  32  than the pair of intermediate supporting portions  4 , and second nuts  13 B which are attached to the traveling rods  12  so as to come into contact with the pair of intermediate supporting portions  4  from the side closer to the distal end portion  32   c  of the bundle  32  than the pair of intermediate supporting portions  4 . 
         [0058]    The first nuts  13 A are used for the movement of the bundle  32  in the insertion direction of the bundle  32  with respect to the casing  34 . The second nuts  13 B are used for the movement of the bundle  32  in the insertion direction of the bundle  32  with respect to the casing  34 . It is not indispensable that the first nuts  13 A and the second nuts  13 B are simultaneously attached to the traveling rods  12 . For example, when the bundle  32  is inserted into the casing  34 , the second nuts  13 B may not be provided as long as the first nuts  13 A are provided. 
         [0059]    In addition, if the first nuts  13 A and the second nuts  13 B are simultaneously attached to the traveling rods  12 , either the first nuts  13 A or the second nuts  13 B are used as desired nuts  13 , and the bundle  32  can be easily inserted and removed with respect to the casing  34 . 
         [0060]    As shown in  FIGS. 5 and 10 , the end support portion  14  is a member which supports the rear end portion  32   d  of the bundle  32 . The end support portion  14  includes a first end support portion  14 A which is disposed on the same rail  3  as the rail  3  on which the first intermediate supporting portion  4 A travels, and a second end support portion  14 B which is disposed the same rail  3  as the rail  3  on which the second intermediate supporting portion  4 B travels. Hereinafter, the configuration of the first end support portion  14 A will be described, and among the configurations of the second end support portion  14 B, descriptions with respect to portions common to the configuration of the first end support portion  14 A will be omitted. 
         [0061]    An end side through-hole  14   a  which is coaxial with the first through-hole  6   a  and the second through-hole  7   a  of the first intermediate supporting portion  4 A is formed in the first end support portion  14 A. The traveling rod  12  can be inserted into the end side through-hole  14   a.  In addition, the bogie  11 A can be attached to the first end support portion  14 A, and the first end support portion  14 A is movable along the rail  3  of the bundle stand  2 . 
         [0062]    Next, a method of inserting and removing a bundle using the inserting and removing device  1  of the present embodiment will be described along with effects of the inserting and removing device  1 .  FIG. 11  is a flowchart showing a method of inserting and removing a compressor using an inserting and removing device for a compressor of the present embodiment.  FIGS. 12 to 18  are explanatory views for explaining an insertion step of a compressor using the inserting and removing device for a compressor of the present embodiment. 
         [0063]    First, an installation worker transports the bundle stand  2  for placing the bundle  32  to an opening which is formed on the end surface  34   a  on the insertion side of the casing  34  (refer to  FIG. 12 ). 
         [0064]    Next, the bundle  32  is placed on the bundle stand  2  using a known crane or the like. In addition, the pair of intermediate supporting portions  4  and the pair of end support portions  14  are attached to the bundle  32  (Step S 1  shown in  FIG. 11  and refer to  FIG. 13 ). The pair of intermediate supporting portions  4  and the end support portions  14  travel on the rails  3  of the bundle stand  2  by the bogies  11 , and the bundle  32  can move in the direction of the horizontal axis L 1  of the casing  34 . 
         [0065]    Continuously, the installation worker attaches the traveling rods  12  and the first nuts  13 A to the pair of intermediate supporting portions  4  disposed on the rails  3  of the bundle stand  2 , and the installation worker screws the distal ends  12   a  of the traveling rods  12  to the fixing holes  34   b  of the casing  34  to fix the distal end  12   a  to the fixing hole  34   b.  When the bundle  32  moves in the casing  34 , the first nuts  13 A are attached to the side closer to the rear end portion  32   d  of the bundle  32  than the pair of intermediate supporting portions  4  (Step S 2  shown in  FIG. 11  and refer to  FIG. 13 ). 
         [0066]    Subsequently, the installation worker rotates the first nuts  13 A around the center axes X 1  of the traveling rods  12  (Step S 3  shown in  FIG. 11  and refer to  FIG. 14 ), and when the bundle  32  moves in the casing  34 , the installation worker rotates the first nuts  13 A around the center axes X 1  of the traveling rod  12  so as to move the first nuts  13 A toward the casing  34  side. The first nuts  13 A which move toward the casing  34  in the direction of the center axis X 1  of the traveling rod  12  abut on the second support plates  7  of the pair of intermediate supporting portions  4 . If the installation worker further rotates the first nut  13 A so as to move the first nut  13 A toward the casing  34  side from the state where the first nut  13 A abuts on the second support plate  7 , the first nut  13 A moves the pair of intermediate supporting portions  4  toward the casing  34  side along the rails  3 . The bundle  32  fixed to the pair of intermediate supporting portions  4  and the pair of end support portions  14  fixed to the bundle  32  move toward the casing  34  according to the rotations of the first nuts  13 A integrally with the pair of intermediate supporting portions  4 . 
         [0067]    Since the center axis L 2  of the bundle  32  is approximately coaxial with the horizontal axis L 1  of the casing  34 , the bundle  32  is inserted from the distal end portion  32   c  into the casing  34  as shown in  FIG. 14 . 
         [0068]    If the pair of intermediate supporting portions  4  reaches a position close to the casing  34 , the installation worker removes the traveling rods  12  from the casing  34 , and the installation worker removes the first nuts  13 A from the traveling rods  12  (Step S 4  shown in  FIG. 11 ). Subsequently, the installation worker removes the pair of intermediate supporting portions  4  from the bundle  32  (Step S 5  shown in  FIG. 11 ). The removal of the pair of intermediate supporting portions  4  is performed by lifting the pair of intermediate supporting portions  4  from the rails  3  by a known crane after the screwing between the traveling plates  5  and the bundle is removed. In addition, in the course of the pair of intermediate supporting portions  4  reaching the position close to the casing  34 , the traveling rods  12  may enter the end side through-holes  14   a  of the pair of end support portions  14 . In this case, the installation worker extracts the traveling rods  12  from the first through-hole  6   a  and the second through-hole  7   a  of the pair of intermediate supporting portions  4  and the end side through-holes  14   a  of the pair of end support portions  14 . 
         [0069]    After the pair of intermediate supporting portions  4  is removed from the bundle  32 , the bundle  32  is supported by the casing  34  and the pair of end support portions  14 . In this state, the installation worker fixes the traveling rods  12  to the fixing holes  34   b  of the casing  34  again, and the traveling rods  12  are inserted into the end side through-hole  14   a  of the pair of the end support portions  14  (Step S 6  shown in  FIG. 11  and refer to  FIG. 15 ). The first nuts  13 A are attached to the traveling rods  12  from rear end  12   b  sides of the traveling rods  12 . 
         [0070]    After the installation worker attaches each of the first nuts  13 A to the rear end  12   b  (refer to  FIG. 9 ) of the traveling rod  12 , the installation worker rotates the first nut  13 A around the center axis X 1  of the traveling rod  12  so as to move the first nut  13 A toward the casing  34  side (Step S 7  shown in  FIG. 11 ). The first nuts  13 A move toward the casing  34  side in the directions of the center axes X 1  of the traveling rods  12  and abut on the pair of end support portions  14 . If the installation worker further rotates the first nuts  13 A so as to move the first nuts  13 A toward the casing  34  side from the state where the first nuts  13 A abut on the pair of end support portions  14 , the first nuts  13 A move the pair of end support portions  14  toward the casing  34  side along the rails  3 . As shown in  FIGS. 15 and 16 , the bundle  32  fixed to the pair of end support portions  14  moves toward the casing  34  according to the rotations of the first nuts  13 A integrally with the pair of end support portions  14 . Since the pair of end support portions  14  move toward the casing  34  side by the first nuts  13 A, the bundle  32  reaches a specified attachment position inside the casing  34 . If necessary, as shown in  FIG. 17 , the bundle  32  may be pushed into the casing  34  using a known puller. 
         [0071]    As shown in  FIG. 18 , if the bundle  32  reaches the specified installation position inside the casing  34 , the pair of end support portions  14  are removed from the bundle  32 , and the traveling rods  12  are removed from the casing  34 . 
         [0072]    Accordingly, the insertion operation of the bundle  32  with respect to the casing  34  ends. 
         [0073]    When the bundle  32  is extracted from the casing  34 , although it is not shown in detail, the procedure is approximately opposite to that of the insertion operation. 
         [0074]    First, the installation worker positions the bundle stand  2  on the opening side of the casing  34  and fixes the pair of end support portions  14  to the bundle  32 , and the installation worker connects the end support portions  14  and the casing  34  to each other by traveling rods  12  in a state where the second nuts  13 B are positioned between the end support portions  14  and the casing  34 . 
         [0075]    The installation worker rotates the second nuts  13 B around the center axes X 1  of the traveling rods  12  such that the second nuts  13 B move toward the rear end  12   b  sides of the traveling rods  12 , the second nuts  13 B press the pair of end support portions  14 , and the bundle  32  fixed to the end support portions  14  is pulled out from the casing  34 . 
         [0076]    If the attachment holes  32   b  formed on the outer peripheral surface  32   a  of the bundle  32  are exposed to the outside of the casing  34  in a state where the side rollers  33  are positioned inside the casing  34 , the installation worker temporarily removes the traveling rods  12  from the pair of end support portions  14  and the casing  34 , attaches the pair of intermediate supporting portions  4  to the attachment holes  32   b,  and disposes the pair of intermediate supporting portions  4  on the rails  3  of the bundle stand  2 . 
         [0077]    After the installation worker disposes the pair of intermediate supporting portions  4  on the rails  3  of the bundle stand  2 , the installation worker attaches the traveling rods  12  to the pair of intermediate supporting portions  4  and the casing  34  again, and the installation worker rotates the second nuts  13 B around the center axis X 1  of the traveling rod  12  such that the second nuts  13 B move toward the rear end  12   b  sides of the traveling rods  12 . Since the second nuts  13 B rotate around the center axes X 1  of the traveling rods  12 , the pair of intermediate supporting portions  4  is pressed using the second nuts  13 B, and the bundle  32  fixed to the pair of intermediate supporting portions  4  is completely extracted outside from the casing  34 . 
         [0078]    As described above, according to the inserting and removing device and the inserting and removing method of the present embodiment, it is possible to move the bundle  32  with respect to the casing  34  from the state where the bundle  32  completely comes out from the casing  34  to the state where the bundle  32  is installed at the specified position inside the casing  34  by traveling rods  12  which are shorter than the entire length of the bundle in the direction of the center axis of the bundle. Accordingly, a working space required for inserting and removing the bundle  32  with respect to the casing  34  does not largely protrude from the space occupied by the bundle  32 . As a result, if there is a working space enough to arrange the casing  34  and the bundle  32  in the direction of the horizontal axis L 1  of the casing  34 , it is possible to insert and remove the bundle  32  with respect to the casing  34 . 
         [0079]    In addition, since the first through-holes  6   a  and the second through-hole  7   a  of the pair of intermediate supporting portions  4  and the end side through-holes  14   a  of the end support portion  14  are coaxial with each other, the fixing holes  34   b  for fixing the distal ends  12   a  of the traveling rods  12  can be used for both the connections between the pair of intermediate supporting portions  4  and the traveling rods  12  and the connections between the end support portions  14  and the traveling rods  12 . 
         [0080]    In addition, since each of the pair of intermediate supporting portions  4  has the first support plate  6 , the second support plate  7 , the rib plate  9 , and the seat plate  8  and deformation of the first support plate  6  and the second support plate  7  due to the pressing forces generated by the first nut  13 A and the second nut  13 B is prevented by the rib plate  9  and the seat plate  8 , the weight of the pair of intermediate supporting portions  4  is reduced and rigidities thereof increase. 
       MODIFICATION EXAMPLE 
       [0081]    Next, a modification example of the above-described embodiment will be described.  FIG. 19  is a side view showing an intermediate supporting portion of the present modification example.  FIG. 20  is a front view showing the intermediate supporting portion of the present modification example. 
         [0082]    As shown in  FIGS. 19 and 20 , in the present embodiment, each of the pair of intermediate supporting portions  4  includes a first piece  41  and a second piece  42  which can be separated from each other so as to divide each of the first through-hole  6   a  and the second through-hole  7   a  into two. 
         [0083]    The first piece  41  and the second piece  42  include semi-cylindrical depressions  6   a   1  and  6   a   2  which are combined to each other so as to be first through-hole  6   a,  and semi-cylindrical depressions  7   a   1  and  7   a   2  which are combined to each other to be the second through-hole  7   a.    
         [0084]    In a state where the first piece  41  and the second piece  42  are combined to each other, the first through-hole  6   a  and the second through-hole  7   a  becomes the hole into which the traveling rod  12  is inserted, and in a state where the first piece  41  and the second piece  42  are separated from each other, each of the first through-hole  6   a  and the second through-hole  7   a  is divided into two in a state of having the semi-cylindrical depression  6   a   1  and the semi-cylindrical depression  7   a   1  in the first piece  41  and the semi-cylindrical depression  6   a   2  and the semi-cylindrical depression  7   a   2  in the second piece  42 . 
         [0085]    In the present modification example, since the first piece  41  and the second piece  42  are separated from each other in the state where the traveling rod  12  is inserted into the first through-hole  6   a  and the second through-hole  7   a  shown in  FIG. 19  similarly to  FIG. 9 , it is possible to remove the traveling rod  12  from the first through-hole  6   a  and the second through-hole  7   a  without extracting the traveling rod  12  by moving the traveling rod  12  in the direction of the center axis of the first through-hole  6   a  and the second through-hole  7   a.  Accordingly, the removal work of the pair of intermediate supporting portions  4  from the bundle  32  is simple. In addition, if the traveling rods  12  are inserted into the end side through-holes  14   a  of the pair of end support portions  14  when the pair of intermediate supporting portions  4  are positioned to be close to the casing  34 , by attaching nuts different from the first nuts  13 A for moving the pair of intermediate supporting portions  4  from the rear ends  12   b  of the traveling rod  12  so as to be used to move the pair of end support portions  14 , it is possible to transfer the movement of the bundle  32  using the pair of intermediate supporting portions  4  to the movement of the bundle  32  using the end support portions  14  without removing the traveling rods  12  from the casing  34 . 
         [0086]    Hereinbefore, the embodiment of the present invention is described in detail with reference to the drawings. However, the specific configurations are not limited to the embodiment, and design modifications or the like within a scope which does not depart from the gist of the present invention are included in the present invention. 
         [0087]    For example, instead of the configuration disclosed in the modification example of the embodiment in which each of the first through-hole  6   a  and the second through-hole  7   a  can be divided into two by the first piece  41  and the second piece  42 , a side path extending in a direction intersecting the center axis of each of the first through-hole  6   a  and the second through-hole  7   a  may be provided in each of the first through-hole  6   a  and the second through-hole  7   a  such that the insertion and removal directions of the traveling rod  12  with respect to the first through-hole  6   a  and the second through-hole  7   a  coincide with the movement directions when the pair of intermediate supporting portions  4  is attached to and detached from the bundle stand  2 . In this case, although the attachment and detachment directions of the pair of intermediate supporting portions  4  with respect to the bundle stand  2  are limited, it is unnecessary to divide the pair of intermediate supporting portions  4 . 
       INDUSTRIAL APPLICABILITY 
       [0088]    The present invention can be used in a jig for moving a heavy article in a narrow space. 
       REFERENCE SIGNS LIST 
       [0089]      1 : inserting and removing device 
         [0090]      2 : bundle stand 
         [0091]      3 : rail 
         [0092]      4 : pair of intermediate supporting portions 
         [0093]      5 : traveling plate 
         [0094]      6 : first support plate 
         [0095]      7 : second support plate 
         [0096]      8 : seat plate 
         [0097]      9 : rib plate 
         [0098]      10 : moving portion 
         [0099]      11 ,  11 A: bogie 
         [0100]      12 : traveling rod 
         [0101]      13 : nut 
         [0102]      14 : end support portion 
         [0103]      31 : compressor 
         [0104]      32 : bundle 
         [0105]      34 : compressor casing 
         [0106]      35 : casing stand