CN217570384U

CN217570384U - Steel bar truss machining device and steel bar truss

Info

Publication number: CN217570384U
Application number: CN202220981186.3U
Authority: CN
Inventors: 陈振东; 其他发明人请求不公开姓名
Original assignee: TJK Machinery Tianjin Co Ltd
Current assignee: TJK Machinery Tianjin Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-10-14
Anticipated expiration: 2032-04-26

Abstract

The utility model belongs to the technical field of truss processing, a steel bar truss processingequipment and steel bar truss are disclosed, steel bar truss processingequipment includes the chassis and sets up two punching press subassemblies on the chassis, and the punching press subassembly includes regulating plate, punching press mechanism, first punching press module and second punching press module, and steel bar truss processing method uses above-mentioned steel bar truss processingequipment, and steel bar truss includes two structural section bars and a tooth-shaped steel bar that form through foretell steel bar truss processingequipment preparation. The utility model discloses in, through the constitutive structural section who has the connection plush copper of first punching press module and second punching press mould for structural section can effectively reduce area of contact when with profile of tooth steel bar welding, has avoided the structural deformation under the high temperature, has guaranteed connection quality and steel bar truss's shaping quality.

Description

Steel bar truss machining device and steel bar truss

Technical Field

The utility model relates to a truss processing technology field especially relates to a steel bar truss processingequipment and steel bar truss.

Background

The truss is a component widely applied to a steel structure, mainly bears tension or pressure, and has the advantages of less material consumption, high rigidity, light weight and the like compared with a solid web beam. The points where the rods of the truss are combined are called nodes (or nodes), and the truss can be divided into a plane truss and a space truss according to the distribution of the axes of the rods of the truss and the external force applied to the rods, wherein the plane truss is widely applied. The space structure such as a roof truss or a bridge is composed of a series of plane trusses which are parallel to each other. Common trusses include steel trusses, reinforced concrete trusses, prestressed concrete trusses, wood trusses, steel and wood composite trusses, and the like.

Compared with the prior art, the novel angle iron truss is formed by welding tooth-shaped steel bars and angle irons, and the steel bars processed into the tooth shapes by means of top bending replace a plurality of rod pieces, so that the structure is simplified on the premise that the strength can be guaranteed, the manufacturing efficiency is improved, and the processing cost is saved.

However, in the process of processing and manufacturing the angle iron truss, because the contact area between the bent tooth-shaped steel bar and the plane of the angle iron is too large, the welding current required by the angle iron and the plane of the angle iron is large, the welding time is long, the integral heating temperature of the angle iron and the steel bar is too high, the angle iron truss can be seriously bent and deformed difficultly to eliminate after the angle iron truss is welded, and the quality of the angle iron truss is seriously affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel bar truss processingequipment and steel bar truss can effectively reduce the welding area of contact between profile of tooth reinforcing bar and the angle bar.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a reinforcing bar truss processingequipment, includes the chassis and sets up two punching press subassemblies on the chassis, the punching press subassembly includes:

the adjusting plate is connected to the bottom frame in a position adjustable along a first direction;

a stamping mechanism positionally adjustably connected to the adjustment plate in a second direction perpendicular to the first direction,

the first stamping module is arranged on the stamping mechanism, and a stamping groove is formed in the first stamping module;

the second stamping module is arranged on the stamping mechanism, a stamping head is arranged on the first stamping module, and when the stamping mechanism drives the first stamping module and the second stamping module to clamp the structural section, the stamping head and the stamping groove can stamp and mold the connecting raised head on the structural section.

Preferably, the stamping mechanism is provided with a processing groove, the first stamping module and the second stamping module are respectively arranged in the processing groove, and the processing grooves of the two stamping mechanisms are arranged oppositely along the second direction.

Preferably, the stamping mechanism is provided with a processing platform and a supporting arm arranged above the processing platform, the supporting arm surrounds the processing platform to form the processing groove, the first stamping module is arranged on the supporting arm, and the second stamping module is arranged on the processing platform.

Preferably, the support arm is provided with a clamping groove, and the first stamping module is detachably clamped in the clamping groove.

Preferably, a first elongated hole is formed in the bottom frame, the length direction of the first elongated hole is parallel to the first direction, and the adjusting plate is connected to the bottom frame through a fastener penetrating through the first elongated hole.

Preferably, the first elongated hole is provided in plurality, and the first elongated holes are provided in plurality at intervals in the second direction.

Preferably, a second elongated hole is formed in the adjusting plate, the length direction of the second elongated hole is parallel to the second direction, and the stamping mechanism is connected to the adjusting plate through a fastener penetrating through the second elongated hole.

Preferably, a third elongated hole is formed in the adjusting plate, the length direction of the third elongated hole is parallel to the second direction, and the adjusting plate is connected to the base frame through a fastener penetrating through the third elongated hole.

A steel bar truss comprises two structural sections and a tooth-shaped steel bar which are prepared by the steel bar truss processing device, wherein each corner connecting part of the tooth-shaped steel bar is welded to one connecting raised head, and two adjacent corner connecting parts on the tooth-shaped steel bar are respectively welded to the connecting raised heads of the two structural sections.

Preferably, the connecting projection is of a long strip shape, and the length direction of the connecting projection is parallel to the first direction.

The utility model has the advantages that:

form the structural section who has the connection plush copper through first punching press module and second punching press mould, make structural section when with profile of tooth rebar welding, can effectively reduce area of contact, structural deformation under the high temperature has been avoided, connection quality and steel bar truss's shaping quality has been guaranteed, through setting up two punching press subassemblies, can carry out the processing operation to two structural section of steel bar truss in step, through setting up the regulating plate, make two punching press subassemblies adjustable at the ascending interval of steel bar truss length direction, and simultaneously, two punching press mechanisms are adjustable at the ascending interval of steel bar truss width direction, can adapt to the steel bar truss's of different width and wave pitch processing demand.

Drawings

Fig. 1 is a schematic structural view of a steel bar truss processing device according to an embodiment of the present invention;

fig. 2 is a top view of a steel bar truss processing device according to an embodiment of the present invention;

fig. 3 is a side view of a steel bar truss processing device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the stamping mechanism, the first stamping module, and the second stamping module according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of the first stamping module and the second stamping module according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first stamping module according to an embodiment of the present invention;

fig. 7 is a schematic structural view of another direction of the first stamping die set according to the embodiment of the present invention;

fig. 8 is a schematic structural view of a second stamping die set according to an embodiment of the present invention in one direction;

fig. 9 is a schematic structural view of another direction of the second stamping die set according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a steel bar truss according to an embodiment of the present invention;

fig. 11 is a top view of a steel bar truss according to an embodiment of the present invention;

fig. 12 is a side view of a steel bar truss according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a structural profile according to an embodiment of the present invention.

In the figure:

100. a chassis; 101. a first elongated hole;

200. an adjusting plate; 201. a second elongated hole; 202. a third elongated hole;

300. a stamping mechanism; 301. processing a tank; 310. a processing platform; 320. a support arm;

400. a first stamping module; 401. punching a groove; 402. a first stamping surface; 410. a first connector; 420. a first punch holder;

500. a second stamping module; 501. punching a head; 502. a second stamping surface; 510. a second connector; 520. a second punch holder;

1. a structural profile; 11. connecting the raised head;

2. tooth-shaped reinforcing steel bars; 21. a corner connecting portion.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-9, the utility model provides a steel bar truss processingequipment, including chassis 100 and two punching press subassemblies that set up on chassis 100, the punching press subassembly includes regulating plate 200, punching press mechanism 300, first punching press module 400 and second punching press module 500. The adjusting plate 200 is connected to the base frame 100 along a first direction in a position-adjustable manner, the stamping mechanism 300 is connected to the adjusting plate 200 along a second direction in a position-adjustable manner, the second direction is perpendicular to the first direction, the first stamping module 400 is arranged on the stamping mechanism 300, the stamping groove 401 is arranged on the first stamping module 400, the second stamping module 500 is arranged on the stamping mechanism 300, the stamping head 501 is arranged on the first stamping module 400, and when the stamping mechanism 300 drives the first stamping module 400 and the second stamping module 500 to clamp the structural profile 1, the stamping head 501 and the stamping groove 401 can stamp the connecting raised head 11 on the structural profile 1.

The utility model discloses in, have the structural section 1 of connecting plush copper 11 through first punching press module 400 and the shaping of second punching press module 500, make structural section 1 when welding with profile of tooth reinforcing bar 2, area of contact can effectively be reduced, structural deformation under the high temperature has been avoided, connection quality and steel bar truss's shaping quality has been guaranteed, through setting up two punching press subassemblies, can process the operation in step to two structural section 1 of steel bar truss, through setting up regulating plate 200, make two punching press subassemblies interval on steel bar truss length direction adjustable, and simultaneously, two punching press mechanisms 300 are adjustable at the ascending interval of steel bar truss width direction, can adapt to the processing demand of the steel bar truss of different width and wave distance.

Specifically, a first elongated hole 101 is formed in the bottom frame 100, a length direction of the first elongated hole 101 is parallel to the first direction, and the adjusting plate 200 is connected to the bottom frame 100 by a fastener inserted into the first elongated hole 101. The device has simple structure and convenient adjustment.

More specifically, the first elongated hole 101 is provided in plurality, and the plurality of first elongated holes 101 are provided at intervals in the second direction. Through setting up a plurality of first rectangular holes 101, can carry out the large-span adjustable to two punching press mechanisms 300 interval on steel bar truss width direction, it is more convenient.

In this embodiment, in the second direction, the distance between two adjacent first elongated holes 101 is a set value, and a scale mark is disposed on one side of each first elongated hole 101, so that the position adjustment of the punching mechanism 300 is more accurate and reliable.

Specifically, the adjusting plate 200 is provided with a second elongated hole 201, a length direction of the second elongated hole 201 is parallel to the second direction, and the punching mechanism 300 is connected to the adjusting plate 200 through a fastener inserted into the second elongated hole 201. The device has simple structure and convenient adjustment.

More specifically, the adjustment plate 200 is provided with a third elongated hole 202, a length direction of the third elongated hole 202 is parallel to the second direction, and the adjustment plate 200 is connected to the bottom frame 100 by a fastener inserted into the third elongated hole 202. By providing the third elongated hole 202, the adjustment plate 200 can perform position adjustment in the second direction on the bottom chassis 100, thereby increasing the fine adjustment range of the punching mechanism 300 in the second direction.

In this embodiment, the fastening member is a structure in which a bolt and a nut are engaged, taking the adjustment plate 200 and the base frame 100 as an example, the bolt is screwed with the nut through the third elongated hole 202 and the first elongated hole 101, when the bolt and the nut are screwed tightly, the head of the bolt and the nut clamp the adjustment plate 200 and the base frame 100, so that the two are fixed in position, and when the position adjustment is required, the bolt and the nut are unscrewed, so that the adjustment plate 200 and the base frame 100 can move relatively.

Specifically, the press mechanism 300 is provided with a processing groove 301, the first press module 400 and the second press module 500 are respectively provided in the processing groove 301, and the processing grooves 301 of the two press mechanisms 300 are arranged in the second direction. Through setting up two processing grooves 301 in opposite directions for when two structural section bars 1 of synchronous processing, two structural section bars 1 shelter from each other in the second direction, and safe and reliable more avoids the outside fly-over of foreign matter in the stamping process.

More specifically, be provided with processing platform 310 on punching press mechanism 300 and set up in the support arm 320 of processing platform 310 top, support arm 320 encloses to establish on processing platform 310 and forms processing groove 301, first punching press module 400 sets up on support arm 320, second punching press module 500 sets up on processing platform 310, punching press mechanism 300 passes through hydraulic system drive second punching press module 500 and removes towards first punching press module 400, hydraulic system's relevant structure and theory of operation are the conventional setting in this field, no longer describe herein, except that hydraulic system, punching press mechanism 300 can also adopt other transmission systems, such as motor drive's rack and pinion system, drive second punching press module 500.

In this embodiment, the supporting arm 320 is provided with a clamping groove, and the first stamping module 400 is detachably clamped in the clamping groove, so as to be convenient for disassembly, assembly and maintenance.

Specifically, a first stamping surface 402 is arranged on the first stamping module 400, the width of the first stamping surface 402 is smaller than that of the structural profile 1, the stamping groove 401 is arranged on the first stamping surface 402, a second stamping surface 502 is arranged on the second stamping module 500, the width of the second stamping surface 502 is larger than that of the structural profile 1, the stamping head 501 is arranged on the second stamping surface 502, and when the structural profile 1 is clamped by the first stamping surface 402 and the second stamping surface 502, the stamping head 501 and the stamping groove 401 can stamp the connecting raised head 11 on the structural profile 1.

In this embodiment, the length direction of the first stamping surface 402 is parallel to the length direction of the second stamping surface 502, the stamping groove 401 is long and the length direction is parallel to the length direction of the first stamping surface 402, and the stamping head 501 is long and the length direction is parallel to the length direction of the second stamping surface 502.

Specifically, the first stamping die set 400 includes a first connection head 410 and a first stamping seat 420, the first stamping surface 402 and the stamping groove 401 are disposed on the first stamping seat 420, the first stamping seat 420 is detachably connected to the first connection head 410, and the first connection head 410 is detachably clamped in the clamping groove. Through the arrangement, the first punching seat 420 with the punching grooves 401 with different sizes can be replaced according to actual requirements.

More specifically, the first connector 410 is cylindrical, a first mounting groove is radially formed on an end surface of one end of the first connector 410, and the first stamping seat 420 is partially clamped in the first mounting groove. By providing the first mounting groove, the first punch holder 420 can be positionally adjusted in a radial direction of the first connection head 410.

In this embodiment, the first connection head 410 and the first stamping seat 420 are detachably connected by a screw, a connection hole is formed in the first connection head 410, and a threaded hole is formed in the first stamping seat 420.

Specifically, the second stamping module 500 includes a second connector 510 and a second stamping seat 520, the second stamping surface 502 and the stamping head 501 are disposed on the second stamping seat 520, the second stamping seat 520 is detachably connected to the second connector 510, and the second connector 510 is configured to be connected to the stamping mechanism 300. Through the arrangement, the second punching seat 520 with the punching heads 501 with different sizes can be replaced according to actual requirements.

More specifically, the second connector 510 is cylindrical, a cylindrical second mounting groove is formed in an end surface of one end of the second stamping seat 520, and a portion of the second connector 510 is clamped in the second mounting groove. By providing the second mounting groove, the second punch holder 520 can be rotated in the circumferential direction of the second connector 510 for position adjustment.

In this embodiment, the second connecting head 510 and the second stamping seat 520 are detachably connected by screws, a connecting hole is provided on the second connecting head 510, and a threaded hole is provided on the second stamping seat 520.

The utility model also provides a steel bar truss processing method uses foretell steel bar truss processingequipment, including following step:

step one, adjusting the position of the stamping mechanism 300 on the adjusting plate 200 according to the width of the steel bar truss to be formed.

And step two, adjusting the positions of the two adjusting plates 200 on the underframe 100 according to the wave pitch of the tooth-shaped reinforcing steel bars 2.

And step three, respectively placing the two structural profiles 1 on two stamping mechanisms 300.

Step four, the stamping mechanism 300 drives the first stamping die set 400 and the second stamping die set 500 to stamp the connecting bosses 11 on the structural profile 1.

And step five, the stamping mechanism 300 drives the first stamping module 400 and the second stamping module 500 to reset.

And step six, driving the two structural section bars 1 to travel for a set distance by the stepping mechanism.

And step seven, the stamping mechanism 300 is matched with the stepping mechanism to perform stamping and displacement until the two structural section bars 1 are processed.

And step eight, overlapping the tooth-shaped reinforcing steel bars 2 on the connecting raised heads 11 of the two structural sections 1.

And step nine, welding the tooth-shaped reinforcing steel bar 2 to the connecting raised head 11 by the welding mechanism.

The utility model discloses an among the steel bar truss processing method, have the structural section 1 of connecting plush copper 11 through first punching press module 400 and the 500 shaping of second punching press module, make structural section 1 when welding with profile of tooth reinforcing bar 2, can effectively reduce area of contact, structural deformation under the high temperature has been avoided, connection quality and steel bar truss's shaping quality has been guaranteed, through setting up two punching press subassemblies, can be to two 1 synchronous processing operation of structural section of steel bar truss's structural section, through setting up regulating plate 200, make two punching press subassemblies adjustable at the ascending interval of steel bar truss length direction, and simultaneously, two punching press mechanisms 300 are adjustable at the ascending interval of steel bar truss width direction, can adapt to the steel bar truss's of different width and wave pitch processing demand, cooperate with step mechanism and welding mechanism through steel bar truss processingequipment, simple high-efficient the processing of structural section 1 and assembling of steel bar truss have been realized.

In this embodiment, the stepping mechanism and the welding mechanism are conventional devices in the art, and the specific structure and operation principle thereof are not described herein again.

As shown in fig. 10-13, the utility model also provides a steel bar truss, include two structural section 1 and a tooth form reinforcing bar 2 that form through foretell steel bar truss processingequipment preparation, every turning connecting portion 21 of tooth form reinforcing bar 2 welds in a connection plush copper 11, and two adjacent turning connecting portions 21 weld respectively in the connection plush copper 11 of two structural section 1 on the tooth form reinforcing bar 2.

The utility model discloses in, through set up connection plush copper 11 on structural section 1, link to each other with the welding of profile of tooth reinforcing bar 2 by connecting plush copper 11, structural section 1 and profile of tooth reinforcing bar 2's area of contact when effectively having reduced the welding have reduced welding heating temperature, have avoided the structural deformation under the high temperature, have guaranteed the shaping quality of connection quality and steel bar truss.

Specifically, the coupling projection 11 is elongated, and the length direction of the coupling projection 11 is parallel to the first direction. The connecting raised head 11 is arranged to be long, so that the alignment difficulty of the tooth-shaped steel bar 2 and the connecting raised head 11 is reduced, and the processing efficiency is improved.

More specifically, as shown by D and D marked in fig. 11, the coupling boss 11 has a width D, and the tooth-shaped reinforcing bar 2 is formed by bending a reinforcing bar having a diameter D, D < 2D. By limiting the width of the connecting raised head 11, the insufficient width of the connecting raised head 11 and the insufficient connection strength of the tooth-shaped reinforcing steel bar 2 are avoided, and the overhigh temperature of welding heating caused by the overlarge width of the connecting raised head 11 is avoided.

Specifically, two structural profiles 1 are arranged parallel to each other and spaced apart from each other, and the connecting projections 11 on the two structural profiles 1 are staggered in a first direction.

More specifically, the connecting projections 11 are arranged on the supporting surfaces of the structural profiles 1, the supporting surfaces of the two structural profiles 1 are located in the same plane, in the second direction, the corner connecting portion 21 is partially located on the side of the connecting projection 11 of one structural profile 1 facing away from the other structural profile 1, and the tooth-shaped reinforcing steel bar 2 abuts against the supporting surfaces. Through the arrangement, the corner connecting part 21 of the tooth-shaped steel bar 2 partially exceeds the connecting convex head 11, and after welding is completed, a hooking effect can be formed on the connecting convex head 1111 in the width direction of the steel bar truss, so that the structural strength of the steel bar truss in the width direction is improved.

In this embodiment, structural section 1 is the angle bar, and the angle bar includes two rectangular plate bodies, and two rectangular plate body mutually perpendicular connect, and the inboard face of a rectangular plate is the holding surface, connects plush copper 11 and sets up on this rectangular plate body.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The reinforcing steel bar truss machining device is characterized by comprising an underframe (100) and two stamping assemblies arranged on the underframe (100), wherein each stamping assembly comprises:

an adjusting plate (200), wherein the adjusting plate (200) is connected to the base frame (100) in a position adjustable along a first direction;

a punching mechanism (300), the punching mechanism (300) being position-adjustably connected to the adjustment plate (200) in a second direction, the second direction being perpendicular to the first direction,

the first stamping die set (400) is arranged on the stamping mechanism (300), and a stamping groove (401) is formed in the first stamping die set (400);

the second stamping die set (500) is arranged on the stamping mechanism (300), a stamping head (501) is arranged on the first stamping die set (400), and when the stamping mechanism (300) drives the first stamping die set (400) and the second stamping die set (500) to clamp the structural section (1), the stamping head (501) and the stamping groove (401) can stamp and form the connecting raised head (11) on the structural section (1).

2. The steel bar truss processing device according to claim 1, wherein a processing groove (301) is formed in the stamping mechanism (300), the first stamping module (400) and the second stamping module (500) are respectively disposed in the processing groove (301), and the processing grooves (301) of the two stamping mechanisms (300) are disposed in the second direction.

3. The steel bar truss processing device according to claim 2, wherein a processing platform (310) and a supporting arm (320) arranged above the processing platform (310) are arranged on the stamping mechanism (300), the supporting arm (320) surrounds the processing platform (310) to form the processing slot (301), the first stamping module (400) is arranged on the supporting arm (320), and the second stamping module (500) is arranged on the processing platform (310).

4. The steel bar truss processing device as claimed in claim 3, wherein the support arm (320) is provided with a clamping groove, and the first punching module (400) is detachably clamped in the clamping groove.

5. The reinforcing bar truss processing device according to claim 1, wherein a first elongated hole (101) is formed in the base frame (100), a length direction of the first elongated hole (101) is parallel to the first direction, and the adjusting plate (200) is connected to the base frame (100) through a fastener inserted into the first elongated hole (101).

6. The reinforcing bar truss processing device according to claim 5, wherein the first elongated hole (101) is provided in plurality, and the plurality of first elongated holes (101) are provided at intervals in the second direction.

7. The reinforcing bar truss processing device according to claim 1, wherein a second elongated hole (201) is formed in the adjusting plate (200), a length direction of the second elongated hole (201) is parallel to the second direction, and the punching mechanism (300) is connected to the adjusting plate (200) through a fastener inserted into the second elongated hole (201).

8. The reinforcing bar truss processing device according to claim 7, wherein a third elongated hole (202) is formed in the adjusting plate (200), the length direction of the third elongated hole (202) is parallel to the second direction, and the adjusting plate (200) is connected to the base frame (100) through a fastener inserted into the third elongated hole (202).

9. A steel bar truss, characterized by comprising two structural sections (1) and a tooth-shaped steel bar (2) prepared by the steel bar truss processing device as claimed in any one of claims 1 to 8, wherein each corner connecting part (21) of the tooth-shaped steel bar (2) is welded to one connecting boss (11), and two adjacent corner connecting parts (21) of the tooth-shaped steel bar (2) are respectively welded to the connecting bosses (11) of the two structural sections (1).

10. The reinforcing bar truss as claimed in claim 9, wherein the coupling bosses (11) have a long bar shape, and a length direction of the coupling bosses (11) is parallel to the first direction.