JP3233440U - Piping rack connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piping rack connection structure capable of tolerating misalignment of a portion connecting a piping rack and another member and hardly increasing the man-hours for connection. SOLUTION: A frame-shaped piping rack 2 including a pair of main beams 20 and 22 extending in a first direction is connected to a connection target member 3 extending in a second direction intersecting the main beams. The portion of the connection target member that intersects the main beam constitutes the connection portion 231, and the connection member 5 that connects the connection target member and the main beam is detachably fixed to the connection portion. The connecting member includes a protruding portion 50 extending from the connecting portion to the side with the main beam, a hooking portion 51 that is continuous with the protruding portion and bends so as to hang on the back side of the main beam, and a direction that is continuous with the hooking portion and approaches the connecting portion. It includes a return portion 52 that extends and is fixed to the connection portion. [Selection diagram] Fig. 1

Description

The present invention relates to a piping rack connection structure.

Conventionally, in facilities such as factories and buildings, piping racks that support piping for wastewater treatment equipment and piping for air conditioning equipment have been installed. A plurality of these piping racks may be connected according to the shape and size of the supporting piping. At the time of this connection, a connecting hole for connection is formed in each beam constituting the piping rack, and each beam is bolted to each other through the connecting hole, each beam is welded, and each beam is connected to each other with a connecting metal fitting. (See Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-274587

However, since many piping racks installed in facilities such as factories and buildings have a length of several meters only in the dimensions of the main beams, it is difficult to connect the piping racks to each other in advance. For this reason, the connection process is performed at the installation site of the piping rack, but since the environment at the installation site is not constant, the connection points between the members that were planned to be connected are misaligned. .. In this case, it is necessary to re-form the connecting holes and weld the members to each other, which causes an increase in man-hours for connecting the piping rack. In the method of connecting a piping rack described in Patent Document 1, a connecting metal fitting is used, and a mounting hole pre-drilled in the connecting metal fitting and a connecting hole formed in advance in each beam are combined and passed through each hole. The piping rack was connected by fixing with screws. Then, when the mounting hole and the connecting hole do not match, a new mounting hole is bored in the adjusting portion provided in the connecting metal fitting to cope with the misalignment. However, with this method, it is difficult to reduce the man-hours for connecting the piping rack because it is necessary to make a new mounting hole in the connecting metal fitting.

An object of the present invention is to provide a piping rack connection structure that can tolerate misalignment when connecting a piping rack and other members and does not easily increase the man-hours for connection.

The present invention provides a frame-shaped piping rack including a pair of main beams extending in the first direction, a first rib extending in the width direction of the main beam, and a second rib extending in the vertical direction of the main beam. , A piping rack connection structure for connecting to a connection target member extending in a second direction intersecting the main beam, and a portion of the connection target member intersecting the main beam is a connecting portion connected to the piping rack. A connecting member for connecting the connection target member and the main beam is detachably fixed to the connecting portion, and the connecting member has a protruding portion extending from the connecting portion to a side of the main beam. A hooking portion that is continuous with the protruding portion and bends so as to hang on the back side of the main beam, and a return portion that is continuous with the hooking portion and extends in a direction approaching the connecting portion and is fixed to the connecting portion. It is characterized by being.

According to the present invention as described above, the main beam and the member to be connected can be connected by the connecting member. This connecting member includes a projecting portion extending from the connecting portion to the side with the main beam, a hooking portion that is continuous with the protruding portion and bends so as to hang on the back side of the main beam, and a hooking portion that is continuous with the hooking portion and extends in a direction approaching the connecting portion. Since it is provided with a return portion fixed to the connecting portion, the structure is such that the main beam is surrounded in the second direction (the direction in which the main beam intersects the first direction in which the main beam extends) when the main beam is connected to the member to be connected. ing. Therefore, when connecting the main beam and the member to be connected, the main beam can be moved in the first direction not surrounded by the connecting member, and the connecting member is moved in the first direction not surrounded by the main beam. Can be moved. Therefore, even if the portion connecting the main beam and the connecting member is displaced in the first direction with respect to the planned portion, one of the main beam and the connecting member should be moved in the first direction with respect to the other. Therefore, the misalignment can be tolerated. Further, since the connecting member is detachably fixed to the connecting portion of the connecting target member, it is not necessary to prepare a configuration for supporting the connecting member in the main beam. For this reason, when connecting the piping rack, it is possible to prevent operations such as drilling holes and welding for supporting the connecting member with respect to the main beam, including the case of dealing with misalignment. be able to. Therefore, it is difficult to generate a new hole or weld the members at the installation site of the piping rack, so that it is difficult to increase the man-hours for connecting the piping rack to other members.

At this time, the connecting portion is provided with a pair of through holes through which the protruding portion and the returning portion are inserted, and each of the protruding portion and the returning portion is provided with the connecting portion through the through hole. It is preferable that a male screw protruding to the dorsal side and a female screw screwed into the male screw are provided. According to this configuration, the connecting member can be attached to the connecting portion by inserting the protruding portion and the returning portion into the respective through holes and tightening the female screw to the male screw. At this time, since the female screw is located on the back side of the connecting portion and the hooking portion is located on the back side of the main beam, the main beam and the connecting target member can be sandwiched between the female screw and the hooking portion. As a result, the main beam and the member to be connected can be fastened by tightening the female screw to the male screw. Therefore, a more stable connection between the piping rack and the member to be connected can be made. Further, in this case, since the fastening between the main beam and the member to be connected can be released by loosening the female screw, the work of connecting and disconnecting the piping rack can be easily performed.

Further, the connecting portion is provided with a slit extending in the second direction, and each of the protruding portion and the returning portion has a male screw protruding to the back side of the connecting portion through the slit and the male screw. It is preferable that a female screw to be screwed into the slit is provided, and the connecting member is provided so as to be movable in the extending direction of the slit. According to this configuration, the connecting member is provided so as to be movable in the second direction in which the slit formed in the connecting portion extends, so that, for example, after the connecting portion is once determined, the main beam and the connecting target member are connected. Even if the portion connecting the above is further displaced in the second direction, the connecting member can be moved in the second direction. Therefore, in addition to the misalignment in the first direction, the misalignment in the second direction can be tolerated. Therefore, it is possible to make it difficult to further increase the man-hours for connecting the piping rack to other members.

Further, the main beam is formed in an L-shaped cross section by a connecting plate portion facing the connecting portion and a protruding plate portion protruding from one end of the connecting plate portion in a direction away from the connecting portion. The connecting member is provided so that the protruding portion is along the protruding plate portion, the hooking portion is hooked on the protruding end portion of the protruding plate portion, and the return portion is directed toward the other end portion of the connecting plate portion. It is preferably a V-shaped bolt. According to this configuration, when the main beam is formed by the connecting plate portion and the protruding plate portion having an L-shaped cross section, the protruding portion of the connecting member is along the protruding plate portion, and the hooking portion is the protruding end of the protruding plate portion. Since the return portion is provided so as to hang on the portion and face the other end of the connecting plate portion, the gap between the main beam and the connecting member can be reduced. As a result, the piping rack can be connected while suppressing the backlash between the main beam and the connecting member.

Further, the main beam is formed in an L-shaped cross section by a connecting plate portion facing the connecting portion and a protruding plate portion protruding from one end of the connecting plate portion in a direction away from the connecting portion. The connecting member is provided so that the protruding portion is along the protruding plate portion, the hooking portion is bent so as to be orthogonal to the protruding portion, and the returning portion is bent so as to be orthogonal to the hooking portion. It may be a U-shaped bolt.

Further, the protruding portion or the returning portion provided with the male screw is provided with a flange portion protruding in the circumferential direction of the male screw, and the main beam and the connecting target member are formed by the flange portion and the female screw. It is preferable to be sandwiched. According to this configuration, the main beam and the connecting target member can be sandwiched between the flange portion and the female screw, so that the state in which the main beam and the connecting target member are connected by the connecting member can be stably maintained. can.

Further, the piping rack is provided so as to be supported by a support member that supports the piping rack, and the support member includes a pair of columns that rise from the installation surface at intervals in the width direction of the main beam, and the support member. A rack joint portion that is bridged between the columns may be provided, and the rack joint portion may be configured as the connection target member. According to this configuration, the above-mentioned misalignment can be tolerated even when the piping rack and the support member are connected, and it is possible to make it difficult to increase the man-hours for connecting the piping rack and the support member.

Further, the connection target member may be a member that constitutes a piping rack different from the piping rack. According to this configuration, the above-mentioned misalignment can be tolerated even when the piping rack is connected to a piping rack different from the piping rack, and the man-hours for connecting the piping rack and the support column member is increased. It can be difficult to make it.

According to the piping rack connection structure of the present invention, it is possible to provide a piping rack connection structure that can tolerate misalignment of a portion connecting the piping rack and other members and does not easily increase the man-hours for connection.

It is an overall perspective view which shows the piping rack connection structure of this invention. It is a perspective view which shows the piping rack. It is a perspective view which shows the piping rack connected to the piping rack. It is a side view of the connection member used for the connection. It is a perspective view which shows the support column member connected to the piping rack. It is a side view which looked at the rack joint part of the support column member from the side view.

Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing a piping rack connection structure 1 of the present invention.

In the drawings, the arrows X, Y, and Z are directions orthogonal to each other. In the present embodiment, the first direction in which the main beam extends is represented by an arrow Y and is referred to as "front-back direction Y". Further, the width direction of the piping rack is represented by an arrow X and is described as "left-right direction X". Then, the vertical direction is represented by an arrow Z, and is described as "vertical direction Z". The left-right direction X and the vertical direction Z that intersect the front-rear direction Y are defined as the second direction that intersects the first direction.

The piping rack connection structure 1 according to the present embodiment is composed of a piping rack 2, a connection target member 3 connected to the piping rack 2, and a connection member 5 connecting the piping rack 2 and the connection target member 3. ing.

As shown in FIG. 2, the piping rack 2 has a pair of upper main beams 20 and 20 extending in the front-rear direction Y at intervals in the left-right direction X and a pair extending in the left-right direction X of the upper main beams 20 and 20. The first rib 21 bridged between the upper main beams 20 and 20 and the pair of upper main beams 20 and 20 arranged below the pair of upper main beams 20 and 20 facing each other in the vertical direction Z. A second rib extending in the vertical direction Z of the lower main beams 22 and 22 and the upper main beams 20 and 20 and the lower main beams 22 and 22 and connecting the upper main beams 20 and 20 and the lower main beams 22 and 22. It is composed of 23 and a pipe fixing rail 24 extending in the left-right direction X of the lower main beams 22 and 22 and spanning between the pair of lower main beams 22 and 22, and is formed in a substantially rectangular frame shape. There is.

The upper main beams 20 and 20 are made of angle steel having an L-shaped cross section. The upper main beams 20 and 20 are a vertical plate 20a (connecting plate portion) extending in the vertical direction Z (shown only in the upper main beam 20 on the left side of FIGS. It has a horizontal plate 20b (protruding plate portion) protruding inward (shown only on the upper main beam 20 on the left side of FIGS. 1 and 2). The lower main beams 22 and 22 are also made of angle steel similar to the upper main beams 20 and 20, and the vertical plate 22a (connecting plate portion) and the horizontal plate 22b (protruding plate portion) (lower left side of FIGS. 1 and 2). It has (shown only on the side main beam 22). In the following description, the upper main beams 20 and 20 may be referred to as the upper main beam 20, and the lower main beams 22 and 22 may be referred to as the lower main beam 22. Further, the upper main beam 20 and the lower main beam 22 may be collectively referred to as the main beams 20 and 22. Similarly, the vertical plate 20a of the upper main beam 20 and the vertical plate 22a of the lower main beam 22 are referred to as the vertical plates 20a and 22a of the main beams 20 and 22, and the horizontal plate 20b and the lower main beam 22 of the upper main beam 20 are described. The horizontal plate 22b of the above may be referred to as the horizontal plates 20b, 22b of the main beams 20, 22.

The first rib 21 is made of angle steel having an L-shaped cross section. The first rib 21 is formed with groove portions (not shown) that open upward at both ends in the left-right direction X, and by fitting the upper main beam 20 into the groove portions, the horizontal plate of the upper main beam 20 is fitted. The upper surface of the 20b and the upper surface of the first rib 21 are configured to be flush with each other. A plurality of the first ribs 21 (three in FIGS. 1 and 2) are arranged at intervals in the front-rear direction Y from the vicinity of the front end portion of the upper main beam 20. The second rib 23 is made of angle steel having an L-shaped cross section. The second rib 23 includes a vertical plate 23a (shown only on the second rib 23 on the left front side of FIGS. 1 and 2) that abuts on the outer surfaces of the vertical plates 20a and 22a of the main beams 20 and 22, and the vertical plate 23a. It has a horizontal plate 23b (shown only on the second rib 23 on the left front side in FIGS. 1 and 2) that protrudes outward in the left-right direction X from the front end portion. A plurality of second ribs 23 (three in FIGS. 1 and 2) are arranged at intervals in the front-rear direction Y from the front ends of the main beams 20 and 21. The pipe fixing rail 24 is a member for supporting a pipe (not shown). The pipe fixing rail 24 is made of channel steel having a groove portion 24a that opens upward. After arranging the pipes so as to intersect on the pipe fixing rail 24, the pipes are supported by fixing the pipes with a fixture (not shown) fitted in the groove portion 24a.

In the present embodiment, the appliance having the connection target member 3 is another piping rack 200 having the same configuration as the piping rack 2. As shown in FIG. 3, the piping rack 200 is designed so that its front end is connected to the main beams 20 and 22 on the right side of the piping rack 2 at the installation site. The piping rack 200 includes a second rib 230 as a connection target member 3 connected to the main beams 20 and 22 of the piping rack 2 described above. The second rib 230 is a member corresponding to the second rib 23 provided at the front end portion of the above-mentioned piping rack 2. The second rib 230 extends in the vertical direction Z. The second rib 230 is made of angle steel having an L-shaped cross section, and has a horizontal plate 230a facing the outer surfaces of the vertical plates 20a and 22a of the main beams 20 and 22. The portion of the horizontal plate 230a that intersects the vertical plates 20a and 20a of the main beams 20 and 22 constitutes a connecting portion 231 that is connected to the piping rack 2. The connection portion 231 is formed with a through hole 231a penetrating in a certain direction of the piping rack 2. Two through holes 231a are formed at intervals in the vertical direction Z so as to sandwich the upper main beam 20 (lower main beam 22). The through holes 231a and 231a are a pair of through holes 231a and 231a through which each of the protruding portion 50 and the returning portion 52 of the connecting portion 5 described later is penetrated.

The connecting member 5 is a member that connects the main beams 20 and 22 and the second rib 230. As shown in FIG. 4A, the connecting member 5 is a U-shaped bolt obtained by bending a columnar metal into a U-shape, and a protruding portion extending from the connecting portion 231 to a side of the main beams 20 and 22. 50, a hooking portion 51 that is continuous with the protruding portion 50 and bends so as to hang on the back side of the main beams 20 and 22, and a return that is continuous with the hanging portion 51 and extends in a direction approaching the connecting portion 231 and is fixed to the connecting portion 231. A unit 52 and a unit 52 are provided. At the end of the return portion 52 on the connecting portion 231 side, a flange portion 52a projecting in the circumferential direction is provided. The flange portion 52a is a portion for fixing the second rib 230 and the main beams 20 and 22, and the second rib 230 and the main beams 20 and 22 are sandwiched between the collar portion 52a and the nut 54 (female screw) described later. It is configured to do.

Each of the protruding portion 50 and the end portion of the flange portion 52a on the connecting portion 231 side is provided with a male screw 53 projecting to the back side of the connecting portion 231 through the through hole 231a. A nut 54 is screwed into each male screw 53. When the nut 54 is tightened to the male screw 53, the connecting member 5 is fixed to the connecting portion 231. When the nut 54 is removed from the male screw 53, the connection member 5 and the connection portion 231 are released from being fixed, and the connection member 5 can be pulled out from the through hole 231a. That is, the connecting member 5 is detachably fixed to the connecting portion 231.

In a state where the connecting member 5 connects the main beams 20 and 22 and the second rib 230, if the connection between the upper main beam 20 and the second rib 230 is taken as an example, the protruding portion 50 is formed as shown in FIG. 4 (A). Along the horizontal plate 20b of the upper main beam 20, the hooking portion 51 bends downward so as to be orthogonal to the protruding portion 50 and hangs on the protruding end portion of the horizontal plate 20b, so that the returning portion 52 is orthogonal to the hanging portion 51. By bending to the connecting portion 231 side and the flange portion 52a abutting on the vertical plate 20a, the outer periphery of the upper main beam 20 is surrounded by the left-right direction X and the vertical direction Z, that is, the second direction.

As shown in FIG. 4B, the connecting member 5 may be formed of a V-shaped bolt obtained by bending a columnar metal into a V shape. In this case, in the state where the connecting member 5 connects the main beams 20 and 22 and the second rib 230, if the connection between the upper main beam 20 and the second rib 230 is taken as an example, the protruding portion 50 is along the horizontal plate 20b. The hooking portion 51 hangs on the protruding end of the horizontal plate 20b, and the returning portion 52 faces the lower end of the vertical plate 20a so as to surround the outer periphery of the upper main beam 20 in the second direction.

The connection between the piping rack 2 and the piping rack 200 is performed by the following procedure. First, at the piping installation site, the orientation of the piping rack 2 is adjusted so that the main beams 20 and 22 extend in the front-rear direction Y. Next, the piping rack 200 is arranged on the right side of the piping rack 2. Then, the orientation of the piping rack 200 is adjusted so that the second rib 230 provided at the front end of the piping rack 200 faces the vertical plates 20a and 22a of the main beams 20 and 22 on the right side of the piping rack 2. Then, the piping rack 200 is moved in the front-rear direction Y, and the horizontal plates 230a of the second rib 230 and the vertical plates 20a and 22a of the main beams 20 and 22 are brought into contact with each other at the portion where the connection is planned. In this state, the main beams 20 and 22 extend in the front-rear direction Y and the second ribs extend in the vertical direction Z, so that the portion of the horizontal plate 230a that intersects the main beams 20 and 22 constitutes the connecting portion 231. The main beams 20 and 22 are located between a pair of through holes 231a and 231a. Next, the connecting member 5 is connected to the connecting portion 231. Specifically, the male screw 53 on the protruding portion 50 side is inserted into the through hole 231a above the main beams 20 and 22, and at the same time, the male screw 53 on the return portion 52 side penetrates below the main beams 20 and 22. It is inserted through the hole 231a and protrudes to the back side of the connecting portion 231. Then, the nut 54 is screwed into each male screw 53. Next, the nut 54 is tightened, and the main beams 20 and 22 and the second rib 230 are fastened. As a result, the connection between the piping rack 2 and the piping rack 200 is completed.

At the time of this connection, if the connection points of the main beams 20 and 22 deviate from the original plan due to the environment of the installation site being different from the original plan, for example, the inclination of the installation surface, the nut 54 Before tightening, the piping rack 2 and the piping rack 200 may be relatively moved in the front-rear direction Y by the amount of the deviation, and then the nut 54 may be tightened. Further, even if the connection location must be changed due to the above-mentioned environment at the installation site or the like after the piping rack 2 and the piping rack 200 are once connected, the nut 54 is loosened to release the above-mentioned fastening. After that, without removing the connecting member 5, the piping rack 2 and the piping rack 200 may be relatively moved, and the nut 54 may be tightened at a new connection point to reconnect.

According to the above first embodiment, the main beams 20 and 22 and the second rib 230 as the connection target member 3 can be connected by the connecting member 5. The connecting member 5 has a structure that surrounds the main beams 20 and 22 in the second direction when the main beams 20 and 22 are connected to the second rib 230. Therefore, when connecting the main beams 20 and 22 and the second rib 230, the main beams 20 and 22 can be moved in the front-rear direction Y not surrounded by the connecting member 5, and the main beams 20 and 22 can be moved. The connecting member 5 can be moved in the front-rear direction Y that does not surround the above. Therefore, even if the portion connecting the main beams 20, 22 and the second rib 230 is displaced in the front-rear direction Y with respect to the planned portion, one of the main beams 20, 22 and the connecting member 5 is connected to the other. By moving in the front-rear direction Y, the misalignment can be tolerated. Further, since the connecting member 5 is detachably fixed to the connecting portion 231 of the second rib 230, it is not necessary to prepare a configuration for supporting the connecting member 5 in the main beams 20 and 22. For this reason, when connecting the piping rack 2, work such as drilling holes to support the connecting member 5 with respect to the main beams 20 and 22 and welding are performed, including the case of dealing with misalignment. It can be prevented from occurring. Therefore, since it is difficult for a process of making a new hole or a process of welding members to occur at the installation site of the piping rack 2, it is possible to make it difficult to increase the man-hours for connecting the piping rack 2 and other members.

Further, since the connecting member 5 is provided with the male screw 53 and protrudes to the back side of the connecting portion 231 and the nut 54 is screwed into the protruding male screw 53, the main beam 20 is formed by the nut 54 and the hooking portion 51. , 22 and the second rib 230 can be sandwiched. As a result, the main beams 20 and 22 and the second rib 230 can be fastened by tightening the nut 54 to the male screw 53. Therefore, the piping rack 2 and the second rib 230 can be connected more stably. Further, in this case, since the fastening between the main beams 20 and 22 and the second rib 230 can be released by loosening the nut 54, the work of connecting and disconnecting the piping rack 2 can be easily performed.

Further, when the main beams 20 and 22 are formed of angle steel having an L-shaped cross section as in the present embodiment, when the connecting member 5 is made of a V-shaped bolt, the protruding portion 50 of the connecting member 5 is mainly used. Along the horizontal plates 20b and 22b of the beams 20 and 22, the hooking portion 51 hangs on the protruding ends of the horizontal plates 20b and 22b, and the returning portion 52 faces the lower ends of the vertical plates 20a and 22a. , 22 and the connecting member 5 can be reduced. As a result, the piping rack 2 can be connected while suppressing the backlash between the main beams 20 and 22 and the connecting member 5.

Further, as in the present embodiment, by providing the connecting member 5 with the flange portion 52a, the vertical plates 20a and 22a of the main beams 20 and 22 and the second rib 230 are sandwiched between the flange portion 52a and the nut 54. can do. By this sandwiching, the state in which the main beams 20 and 22 and the second rib 230 are connected by the connecting member 5 can be stably maintained.

Next, the second embodiment of the present invention will be described with reference to FIGS. 5 to 6. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted or simplified. In the piping rack connection structure 1 according to the present embodiment, the appliance having the connection target member 3 is a support member 4 (support member) that supports the piping rack 2. The support column member 4 is an instrument for supporting the piping rack 2 above the installation surface, and is used when supporting the piping passing near the ceiling at the installation location of the piping rack 2. The support column member 4 includes a pair of columns 40, 40 that rise from the installation surface at intervals in the left-right direction X, and a rack joint 43 that extends in the left-right direction X and is bridged between the columns 40, 40. .. The columns 40 and 40 are composed of square pipes having a square tubular cross section. A rectangular plate-shaped anchor plate 41 is welded to the lower ends of the columns 40 and 40. A through hole 41a penetrating in the vertical direction Z is formed in the anchor plate 41 so that the support column member 4 is fixed to the floor surface (ground plane) by an anchor bolt (not shown) through the through hole 41a. It has become. Reinforcing ribs 42 extending in the left-right direction X and bridged between the columns 40 and 40 are bridged to the portions of the columns 40 and 40 from above the middle portion in the vertical direction Z.

The rack joint 43 is the connection target member 3 in the present embodiment. The rack joint 43 includes a plate-shaped installation plate 44 installed at the upper ends of the columns 40 and 40, and a first angle 45 and a second angle 46 supported by the installation plate 44. There is. The installation plate 44 is a plate that supports the first angle 45 and the second angle 46. The installation plate 44 is a rectangular plate member long in the front-rear direction Y, is installed on each of the columns 40, 40, and is arranged so as to project from the upper end of the columns 40, 40 to the front side and the rear side, respectively. Has been done. The first angle 45 is angle steel having an L-shaped cross section, and includes a vertical plate 45a that rises upward from the front end portion of the installation plate 44, and a horizontal plate 45b that protrudes rearward from the upper end portion of the vertical plate 45a. .. The second angle 46 is angle steel having an L-shaped cross section, and includes a vertical plate 46a that rises upward from the rear end portion of the installation plate 44, and a horizontal plate 46b that protrudes forward from the upper end portion of the vertical plate 46a. There is.

A gap is formed in the front-rear direction Y between the horizontal plate 45b of the first angle 45 and the horizontal plate 46b of the second angle 46. Then, at both ends of the horizontal plate 45b of the first angle 45 and the horizontal plate 46b of the second angle 46 in the left-right direction X, the above-mentioned gap is filled and a joining plate for connecting the first angle 45 and the second angle 46 is connected. 47 is installed. With this configuration, the above-mentioned gap constitutes a slit 43a extending in the left-right direction X of the rack joint portion 43. The slit 43a corresponds to the through hole 231a of the connecting portion 231 in the first embodiment. A connecting member 5 is attached to the slit 43a. In the second embodiment as well as in the first embodiment, the connecting member 5 is detachably fixed to the rack joint 43 by the male screw 53 and the nut 54. That is, the male screw 53 on the protruding portion 50 side and the male screw 53 on the returning portion 52 side are inserted into the slit 43a and projected to the back side of the rack joint portion 43. Then, the nut 54 is screwed into each male screw 53, the nut 54 is tightened, and the main beam 22 and the rack joint 43 are fastened. Since the slit 43a extends in the left-right direction X, the connecting member 5 can move in the left-right direction X along the slit 43a when the nut 54 is loosened.

The connection between the piping rack 2 and the support column member 4 is performed by the following procedure. First, at the piping installation site, the orientation of the piping rack 2 is adjusted so that the main beams 20 and 22 extend in the front-rear direction Y. Further, the orientation of the support column members 4 is adjusted so that the support columns 40, 40 are aligned in the left-right direction X. Then, the piping rack 2 is arranged above the support column member 4. Then, the piping rack 2 is moved in the front-rear direction Y, and the vertical plate 22a of the main beam 22 and the rack joint 43 are brought into contact with each other at a portion where the connection is planned. In this state, the main beam 22 extends in the front-rear direction Y, the rack joint 43 extends in the left-right direction X, and the portion of the rack joint 43 that intersects the main beam 22 constitutes the connection portion 231. Next, the connecting member 5 is connected to the rack joint 43. Specifically, the male screw 53 on the protruding portion 50 side and the male screw 53 on the return portion 52 side are inserted into the slit 43a, respectively, and are projected to the back side of the rack joint portion 43. Then, the nut 54 is screwed into the male screw 53. Next, the nut 54 is tightened to fasten the main beam 22 and the rack joint 43. As a result, the connection between the piping rack 2 and the support column member 4 is completed.

At the time of this connection, if the connection location in the piping rack 2 deviates from the original plan due to the environment of the installation site being different from the original plan, for example, the inclination of the installation surface, the nut 54 Before tightening, the piping rack 2 and the support column member 4 may be relatively moved in the front-rear direction Y by the amount of the deviation, and then the nut 54 may be tightened. Further, even if the connection location must be changed due to the above-mentioned environment at the installation site or the like after the piping rack 2 and the support column member 4 are once connected, the nut 54 is loosened to release the above-mentioned fastening. After that, without removing the connecting member 5, the piping rack 2 and the support column member 4 may be relatively moved, and the nut 54 may be tightened at the new connection point to reconnect. Further, when it is desired to shift the piping rack 2 and the support column member 4 not only in the front-rear direction Y but also in the left-right direction X, after loosening the nut 54, the connecting member 5 is moved in the left-right direction X along the slit 43a. Let me. As a result, the connection portion 231 can be shifted in the left-right direction X from the initial position.

According to the second embodiment described above, the connecting member 5 is provided so as to be movable in the left-right direction X along the slit 43a formed in the rack joint 43, so that the main beam 22 and the rack joint 43 are movable. Even if the portion connecting with and is displaced in the left-right direction X, the displacement can be tolerated. Therefore, in addition to the actions and effects of the first embodiment, the displacement in the left-right direction X can be tolerated, so that it is possible to make it difficult to further increase the man-hours for connecting the piping rack 2 and other members.

In the first and second embodiments described above, the method of fixing the connecting member 5 is determined to be performed by the male screw 53 and the nut 54, but the method of fixing the connecting member 5 is not limited to this. The connection member 5 may be detachably fixed to the connection target member 3 (second rib 230, rack joint 43) without using the male screw 53 and the nut 54.

Further, in the above-described first embodiment, the collar portion 52a is provided at the end portion of the return portion 52 on the connection portion 231 side, but the collar portion 52a is provided at the end portion of the protrusion 50 on the connection portion 231 side. Alternatively, it may be provided at both the end portion of the protrusion 50 on the connection portion 231 side and the end portion of the return portion 52 on the connection portion 231 side.

Further, in the first embodiment and the second embodiment described above, the main beams 20 and 22 are made of angle steel having an L-shaped cross section, but the shapes of the main beams 20 and 22 can be changed as appropriate. For example, the main beams 20 and 22 may be formed of a square pipe having a cylindrical cross-sectional viewing angle. In this case, by using the connecting member 5 composed of the above-mentioned U-shaped bolt, the outer periphery of the main beams 20 and 22 can be surrounded without a gap in the second direction, so that the main beams 20 and 22 and the connecting member 5 can be surrounded. The piping rack 2 can be connected while suppressing the backlash between the two.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the design changes, etc. within a range that does not deviate from the gist of the present invention, etc. Even if there is, it is included in the present invention.

1 Piping rack connection structure 2 Piping rack 20, 22 Main beam 21 1st rib 23 2nd rib 3 Connection target member (2nd rib 230, rack joint 43)
231 Connection part 5 Connection member 50 Protruding part 51 Hanging part 52 Return part

Claims (8)

A frame-shaped piping rack including a pair of main beams extending in the first direction, a first rib extending in the width direction of the main beam, and a second rib extending in the vertical direction of the main beam is provided with the main beam. It is a piping rack connection structure that connects to a member to be connected extending in the second direction that intersects with.
The portion of the connection target member that intersects with the main beam constitutes a connection portion connected to the piping rack.
A connecting member that connects the connecting target member and the main beam is detachably fixed to the connecting portion.
The connecting member includes a protruding portion extending from the connecting portion to a side of the main beam, a hooking portion that is continuous with the protruding portion and bends so as to hang on the back side of the main beam, and the connecting portion that is continuous with the hooking portion. A piping rack connection structure comprising: a return portion extending in a direction approaching the portion and being fixed to the connection portion. The connecting portion is provided with a pair of through holes through which each of the protruding portion and the returning portion is inserted.
Each of the protruding portion and the returning portion is provided with a male screw that protrudes to the back side of the connecting portion through the through hole and a female screw that is screwed into the male screw. Item 1. The piping rack connection structure according to item 1. The connecting portion is provided with a slit extending in the second direction.
Each of the protruding portion and the returning portion is provided with a male screw that protrudes to the back side of the connecting portion through the slit and a female screw that is screwed into the male screw.
The piping rack connecting structure according to claim 1, wherein the connecting member is provided so as to be movable in a direction in which the slit extends. The main beam is formed in an L-shaped cross section by a connecting plate portion facing the connecting portion and a protruding plate portion protruding from one end of the connecting plate portion in a direction away from the connecting portion.
The connecting member is provided so that the protruding portion is along the protruding plate portion, the hooking portion is hooked on the protruding end portion of the protruding plate portion, and the return portion is directed toward the other end portion of the connecting plate portion. The piping rack connection structure according to claim 2 or 3, characterized in that it is a V-shaped bolt. The main beam is formed in an L-shaped cross section by a connecting plate portion facing the connecting portion and a protruding plate portion protruding from one end of the connecting plate portion in a direction away from the connecting portion.
The connecting member is provided so that the protruding portion is along the protruding plate portion, the hooking portion is bent so as to be orthogonal to the protruding portion, and the returning portion is bent so as to be orthogonal to the hooking portion. The piping rack connection structure according to claim 2 or 3, characterized in that it is a U-shaped bolt. The protruding portion or the returning portion provided with the male screw is provided with a flange portion protruding in the circumferential direction of the male screw, and the main beam and the connecting target member are sandwiched between the flange portion and the female screw. The piping rack connection structure according to any one of claims 2 to 5, wherein the piping rack connection structure is characterized. The piping rack is provided so as to be supported by a support member that supports the piping rack.
The support member includes a pair of columns rising from an installation surface at intervals in the width direction of the main beam, and a rack joint bridged between the columns.
The piping rack connection structure according to any one of claims 1 to 6, wherein the rack joint is configured as the connection target member. The piping rack connecting structure according to any one of claims 1 to 6, wherein the connecting target member is a member constituting a piping rack different from the piping rack.

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