Tool for assembling gas pipe, valve body and stove base plate

Abstract

The utility model discloses a tool for assembling a gas pipe, a valve body and a stove base plate, which comprises a first positioning and supporting component, a second positioning and supporting component, a third positioning and supporting component, a fourth positioning and supporting component and a fifth positioning and supporting component, and the first positioning and supporting component is used for supporting the gas pipe and the valve body and limiting the gas pipe and the valve body when the valve body and the gas pipe are assembled; the second positioning and supporting assembly is used for supporting the gas pipe and the base plate when the gas pipe provided with the valve body and the base plate of the stove are assembled together and limiting the gas pipe and the base plate; wherein the surface, supported on the first positioning and supporting assembly, of the gas pipe is set as a first supporting surface, the mounting surface, supported on the second positioning and supporting assembly, of the gas pipe is set as a second supporting surface, and the first supporting surface and the second supporting surface are oppositely arranged; compared with the prior art, the tool for assembling the gas pipe, the valve body and the base plate of the kitchen range has the advantages that the assembling process can be simplified and the assembling efficiency can be improved when the gas pipe, the valve body and the base plate are assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of stove assembly tooling, in particular to a tooling used for assembling a gas pipe, a valve body and a stove chassis. Background Art

[0002] like Figure 1 and Figure 2 As shown, the gas pipe (01) is provided with an air distribution hole (011) for connecting with the valve body and a connecting piece (012) for fixing the connection with the base of the stove. When assembling the stove, it is necessary to first connect the air inlet end of the valve body (02) with the air distribution hole (011), and then fix the valve body (02) to the gas pipe (01) with a fixing piece. After the valve body (02) and the gas pipe (01) are fixed, the gas pipe (01) with the valve body (02) needs to be fixed to the base (03) of the stove. If there is no tooling for positioning, the assembly of the valve body (02) and the gas pipe (01) and the assembly of the gas pipe (01) and the base (03) of the stove are both relatively troublesome and the assembly efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to provide a tool for assembling a gas pipe, a valve body and a stove chassis, which is used to solve the above-mentioned technical problems.

[0004] A tool for assembling a gas pipe, a valve body and a stove chassis, comprising:

[0005] A first positioning support assembly, which is used to support the gas pipe and the valve body when the valve body and the gas pipe are assembled, and to limit the gas pipe and the valve body;

[0006] a second positioning support assembly, which is used to support the gas pipe equipped with the valve body and the base of the stove when the gas pipe and the base are assembled together, and to limit the gas pipe and the base;

[0007] The surface on which the gas pipe is supported on the first positioning support assembly is set as the first supporting surface, and the mounting surface on which the gas pipe is supported on the second positioning support assembly is set as the second supporting surface. The first supporting surface and the second supporting surface are arranged opposite to each other.

[0008] According to one embodiment of the present utility model, the first positioning support assembly includes a first gas pipe support and a first valve body support, the first gas pipe support includes a first support and a second support, the first support supports the gas pipe along a first direction, the second support is arranged to support the gas pipe along a second direction, and the first valve body support is arranged opposite to the first support.

[0009] According to one embodiment of the present invention, there are two first support members, the two first support members are arranged along the same straight line, and the first valve body support member is arranged between the two first support members and is not located on the same straight line as the two first support members.

[0010] According to one embodiment of the present invention, the first positioning support assembly further includes a limiting block, which is used in conjunction with the first valve body support component to limit the valve body.

[0011] According to one embodiment of the present invention, one, two or more limiting holes are provided on the limiting block, and the limiting holes are used to fix the valve stem of the valve body.

[0012] According to one embodiment of the present invention, the first support member is provided with a first limiting groove adapted to the outer diameter of the gas pipe, and the second support member is provided with a second limiting groove adapted to the outer diameter of the gas pipe.

[0013] According to one embodiment of the present invention, the second positioning support assembly includes a second gas pipe support and a chassis support. The second gas pipe support includes a third support and a fourth support. The third support supports the gas pipe along the first direction, and the fourth support is arranged to support the gas pipe along the second direction. The chassis support is used to support the chassis of the stove.

[0014] According to one embodiment of the present invention, the second positioning support assembly further includes a second valve body support member, and the second valve body support member is arranged opposite to the third support member.

[0015] According to one embodiment of the present invention, a base plate is further included, and the first positioning support assembly and the second positioning support assembly are arranged on the base plate.

[0016] According to one embodiment of the present invention, the base plate includes a first base plate and a second base plate, the first positioning support assembly is provided on the first base plate, and the second positioning support assembly is provided on the second base plate.

[0017] Compared with the prior art, the tooling for assembling the gas pipe, valve body and stove chassis of the present invention has the following advantages:

[0018] The tooling of the utility model for assembling the gas pipe, the valve body and the stove chassis can not only support and position the gas pipe and the valve body when the valve body is assembled to the gas pipe, but also support the gas pipe and the chassis when the gas pipe is assembled to the chassis, which can simplify the assembly process and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the connection and structure of the stove's chassis, gas pipe, and valve body;

[0020] Figure 2 for Figure 1 Exploded diagram;

[0021] Figure 3 This is a schematic structural diagram of the assembly tool for the gas pipe, valve body and stove chassis of the present invention;

[0022] Figure 4 This is a schematic diagram of assembling the gas pipe and the valve body on the first positioning support assembly;

[0023] Figure 5 This is a structural diagram of the gas pipe with the valve body installed being placed on the second positioning support assembly to be assembled with the chassis;

[0024] In the figure: 1. First positioning support assembly, 11. First valve body support member, 12. First support member, 121. First limiting groove, 13. Second support member, 131. Second limiting groove, 14. Limiting block, 141. Limiting hole,

[0025] 2. Second positioning support assembly, 21. Chassis support, 22. Third support, 221. Third limiting groove, 23. Fourth support, 231. Fourth limiting groove, 24. Second valve body support, 3. First bottom plate, 4. Second bottom plate, 01. Gas pipe, 011. Gas distribution hole, 012. Connector, 02. Valve body, 03. Chassis.

[0026] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0031] See also Figure 3 The utility model discloses a tool for assembling a gas pipe, a valve body and a stove chassis. The tool for assembling a gas pipe, a valve body and a stove chassis disclosed in the utility model is used for a stove production line. When the valve body 02 and the gas pipe 01 are assembled, the gas pipe 01 and the valve body 02 are supported and the gas pipe 01 and the valve body 02 are positioned. When the gas pipe 01 equipped with the valve body 02 is assembled with the chassis 03 of the stove, the tool is used to support the gas pipe 01 and the chassis 03 and position the gas pipe 01 and the chassis 03, so as to simplify the assembly process of the stove and improve the assembly efficiency. The tooling provided by the present invention includes a first positioning support assembly 1 and a second positioning support assembly 2. The first positioning support assembly 1 is used to support the gas pipe and the valve body when the valve body and the gas pipe are assembled, and to limit the gas pipe and the valve body; the second positioning support assembly 2 is used to support the gas pipe and the chassis when the gas pipe equipped with the valve body is assembled with the chassis of the stove, and to limit the gas pipe and the chassis; wherein, the surface on which the gas pipe is supported on the first positioning support assembly 1 is set as the first supporting surface, and the installation surface on which the gas pipe is supported on the second positioning support assembly 2 is set as the second supporting surface, and the first supporting surface and the second supporting surface are arranged opposite to each other. The utility model is a tool for assembling a gas pipe, a valve body and a stove chassis. The assembly of the valve body 02 and the gas pipe 01 is carried out on a first positioning support assembly 1. After the valve body 02 is installed on the gas pipe 01, the gas pipe 01 is turned over and supported on the second positioning support assembly 2. Then the chassis 03 of the stove is buckled onto the second positioning support assembly 2. The second positioning support assembly 2 supports the gas pipe 01 and the chassis 03 at the same time. At the same time, the installation surface of the connecting piece 012 on the gas pipe 01 abuts against the inner bottom surface of the chassis 03, and the connecting holes of the two correspond one to one. The gas pipe 01 and the chassis 03 can be fixed together by passing the fasteners through the connecting holes on the connecting surfaces of the chassis 03 and the connecting piece 012 in sequence.

[0032] exist Figure 3 In the embodiment shown, the first positioning support assembly 1 is located on the left side of the second positioning support assembly 2, or the first positioning support assembly 1 is located in the upstream process of the second positioning support assembly 2. After the valve body 02 is installed on the gas pipe 01, the assembler flips the gas pipe 01 and supports the second support surface of the gas pipe 01 on the second positioning support assembly 2, and then the installation surface of the connecting piece 012 on the gas pipe 01 can be flipped to an upward setting.

[0033] exist Figure 3 In the embodiment shown, the first positioning support assembly 1 is located on the left side of the second positioning support assembly 2. When the gas pipe 01 is on the first positioning support assembly 1, its first supporting surface is in contact with the first positioning support assembly 1. After the gas pipe 01 is connected to the valve body 02, the gas pipe 01 is flipped clockwise to the right, and the second supporting surface of the gas pipe 01 can be flipped downward, so that the second supporting surface of the gas pipe 01 is supported on the second positioning support assembly 2, and then the chassis 03 and the gas pipe 01 can be fixed.

[0034] See also Figure 3 The utility model is used for assembling the gas pipe, valve body and stove chassis. The first positioning support assembly 1 includes a first gas pipe support and a first valve body support 11. The first gas pipe support includes a first support 12 and a second support 13. The first support 12 supports the gas pipe along a first direction, and the second support 13 supports the gas pipe along a second direction. The first valve body support 11 is arranged opposite to the first support 12. Figure 1 and Figure 2 The gas pipe 01 is L-shaped, and the gas pipe 01 includes a first part arranged horizontally and a second part arranged longitudinally. Correspondingly, the first direction is horizontal and the second direction is longitudinal. When supporting the gas pipe, the first support member 12 supports the first part of the gas pipe horizontally, and the second support member 13 supports the second part of the gas pipe 01 longitudinally. Due to the limitation and positioning of the first support member 12 and the second support member 13, when each gas pipe 01 is placed on the tooling, the position of the air distribution hole 011 thereon is fixed. In this way, after the valve body 02 is placed on the first valve body support member 11, the first valve body support member 11 supports the valve body 02 to limit its position, and the assembler connects the air inlet end on the valve body 02 to the air distribution hole 011, and then fixes the valve body 02 to the gas pipe 01 with a fixing member.

[0035] See also Figure 4When assembling the stove, the valve body 02 and gas pipe 01 are assembled before the gas pipe 01 and the stove chassis 03. When assembling the valve body 02 and gas pipe 01, first place the gas pipe 01 on the first positioning support assembly 1, so that the first portion of the gas pipe 01 is supported on the first support member 12, and the second portion of the gas pipe 01 is supported on the second support member 13. Due to the positioning and positioning of the first and second support members 12 and 13, the position of the gas distribution hole 011 on each gas pipe 01 is fixed when it is placed on the tooling. Therefore, after the valve body 02 is placed on the first valve body support member 11, the valve body 02 is moved and the air inlet end of the valve body 02 is connected to the air distribution hole 011. After the valve body 02 is supported on the first valve body support member 11 and the air inlet end of the valve body 02 is connected to the air distribution hole 011, the valve body 02 can be fixed to the gas pipe 01 using a fixing member. When two or more valve bodies 02 are fixedly connected to the gas pipe 01, the valve bodies 02 can be uniformly positioned and connected, which can improve assembly efficiency.

[0036] The tooling of the present invention is used for assembling the gas pipe, the valve body and the stove chassis. When the valve body 02 is connected to the gas pipe 01, the placement direction of the gas pipe 01 is consistent with the final connection direction of the gas pipe 01 in the stove. At this time, when the valve body 02 is installed on the gas pipe 01, the valve stem of the valve body 02 is set upward. When the valve body 02 is supported by the first valve body support 11, the valve body 02 can be directly placed on the first valve body support 11.

[0037] See also Figure 3 The tooling for assembling the gas pipe, valve body, and stove chassis of this utility model includes two first support members 12, which are arranged along the same straight line. The first valve body support member 11 is located between the two first support members 12 and is not aligned with the two first support members 12. When assembling the valve body 02 with the gas pipe 01, after the first portion of the gas pipe 01 is supported by the two first support members 12, the gas distribution hole 011 on the gas pipe 01 is precisely located between the two first support members 12, facilitating assembly of the valve body 02 onto the gas pipe 01.

[0038] In the fixture for assembling the gas pipe, valve body, and stove chassis of the present invention, the distance between the first support member 12, located farther away from the second support member 13, and the midline of the second support member 13 along the second direction is no greater than the first length of the gas pipe 01. This ensures that when the gas pipe 01 is supported by the second support member 13, the first portion of the gas pipe 01 can be supported by both first support members 12 simultaneously.

[0039] See also Figures 3 to 5In the fixture of the present invention, the distance from the end of the second support member 13 away from the first support member 12 to the extension of the center of the first support member 12 along the first direction is no greater than the second length of the gas pipe. This ensures that after the gas pipe 01 is supported by the two first support members 12, the end of the second portion of the gas pipe 01 away from the first portion is supported by the second support member 13 or extends to the rear end of the second support member 13.

[0040] The utility model is used for the tooling for assembling the gas pipe, the valve body and the stove chassis. The number of the first valve body support members 11 is one, two or more. Each first valve body support member 11 is used to support a valve body 02. When two or more valve bodies 02 are fixedly connected to the gas pipe 01, the valve bodies 02 can be uniformly positioned and connected, which can improve the assembly efficiency.

[0041] See also Figure 3 and Figure 4 The tooling for assembling the gas pipe, valve body, and stove chassis of the present invention includes a first positioning support assembly 1, which further includes a stopper 14. The stopper 14 cooperates with the first valve body support 11 to limit the position of the valve body. After the valve body 02 is placed on the first valve body support 11, the stopper 14 is placed from above the valve body 02 onto the valve body 02. The stopper 14 constrains the valve body 02, preventing it from shifting on the first valve body support 11 and affecting the assembly of the valve body 02 and the gas pipe 01. In specific applications, the stopper 14 is provided with one, two, or several stopper holes 141, which are used to secure the valve stem of the valve body. When assembling the valve body 02 with the gas pipe 01, the valve body 02 can be placed on the first valve body support 11 first, and then the limit block 14 can be installed from top to bottom, so that the limit hole 141 on the limit block 14 is aligned with the valve stem of the valve body 02, and the valve stem passes through the limit hole 141. In this way, when two or more valve bodies 02 are assembled on the gas pipe 01, the positions of the two or more valve bodies 02 will not move. When the air inlet end of one valve body 02 is aligned with the air distribution hole 011 on the gas pipe 01, the air inlet ends of the other valve bodies 02 are also aligned with the corresponding air distribution holes 011 on the gas pipe 01 at the same time, so that the valve bodies 02 are uniformly positioned and connected, which can improve assembly efficiency.

[0042] See also Figure 3 The tooling for assembling the gas pipe, valve body, and stove chassis of the present invention comprises a first retaining groove 121 on the first support member 12, which matches the outer diameter of the gas pipe, and a second retaining groove 131 on the second support member 13, which matches the outer diameter of the gas pipe. When the gas pipe 01 is supported by the first and second support members 12, 13, the first and second retaining grooves 121, 131 constrain the gas pipe 01, preventing it from moving on the first and second support members 12, 13, and thus preventing it from falling off.

[0043] See also Figure 3 and Figure 5 The utility model is a tool for assembling the gas pipe, the valve body and the stove chassis. The second positioning support assembly 2 includes a second gas pipe support and a chassis support 21. The second gas pipe support includes a third support 22 and a fourth support 23. The third support 22 supports the gas pipe along the first direction, and the fourth support 23 is set to support the gas pipe along the second direction. The chassis support 21 is used to support the chassis of the stove. Since the connecting piece 012 on the gas pipe 01 is connected to the chassis 03 of the stove, the fastener passes through the bottom surface of the chassis 03 and the connecting surface of the connecting piece 012 to connect the two, so when connecting the gas pipe 01 to the connecting piece 012, it is necessary to turn the gas pipe 01 so that the connecting surface of the connecting piece 012 on the gas pipe 01 is facing upward, and then the chassis 03 is buckled on the gas pipe 01, and the connecting piece 012 on the gas pipe 01 is abutted against the bottom surface of the chassis 03, and then the connecting hole on the chassis 03 can be aligned with the connecting hole on the connecting piece 012, and the fastener passes through the connecting hole on the chassis 03 and the connecting hole on the connecting piece 012 in turn to fix the chassis 03 and the connecting piece 012 together. Therefore, when connecting the gas pipe 01 to the chassis 03 of the stove, the first part of the gas pipe 01 is supported on the third support member 22, and the second part is supported on the fourth support member 23, so that the gas pipe 01 can be turned over. After turning, the valve pipe at the gas outlet end of the valve body 02 on the gas pipe 01 is supported by the first valve body support member 11, but the valve stem of the valve body 02 is set downward. Then, the chassis 03 is buckled onto the second positioning support assembly 2, and the chassis 03 is supported by the connecting member 012 and the chassis support member 21.

[0044] See also Figure 3 The tooling for assembling the gas pipe, valve body, and stove chassis of the present invention features a third retaining groove 221 on the third support member 22, which matches the outer diameter of the gas pipe. A fourth retaining groove 231 is also provided on the fourth support member 23, which matches the outer diameter of the gas pipe. When the gas pipe 01 is supported by the third and fourth support members 22, 23, the third and fourth retaining grooves 221, 231 position the gas pipe 01, preventing it from moving on the third and fourth support members 22, 23, and preventing it from falling off.

[0045] In the fixture for assembling the gas pipe, valve body, and stove chassis of the present invention, the distance between the midlines of the third support member 22 and the fourth support member 23 along the second direction is no greater than the first length of the gas pipe 01. This ensures that when the gas pipe 01 is supported by the fourth support member 23, the first portion of the gas pipe 01 can be supported by both third support members 22.

[0046] See also Figure 3 and Figure 5 In the fixture of the present invention, the distance from the end of the fourth support member 23 away from the third support member 22 to the extension of the center of the third support member 22 along the first direction is no greater than the second length of the gas pipe. This ensures that after the gas pipe 01 is supported by the third support member 22, the end of the second portion of the gas pipe 01 away from the first portion is supported by the fourth support member 23 or extends to the rear end of the fourth support member 23.

[0047] See also Figure 3 and Figure 5 The tooling for assembling the gas pipe, the valve body, and the stove chassis of the present invention, the second positioning support assembly 2 also includes a second valve body support 24, which is arranged opposite to the third support 22. After the gas pipe 01 is supported on the third support 22 and the fourth support 23, the second valve body support 24 can support the valve body 02. The valve body 02 has a certain weight. When assembling the chassis 03 and the gas pipe 01, the second valve body support 24 supports the valve body 02, which can prevent the entire weight of the valve body 02 from acting on the gas pipe 01. In particular, when multiple valve bodies 02 are connected to the gas pipe 01, the second valve body support 24 supports the valve body 02 and can protect the gas distribution hole 011.

[0048] See also Figure 3 The tooling for assembling the gas pipe, valve body, and stove chassis of the present invention also includes a base plate, on which the first and second positioning support assemblies 1 and 2 are mounted. Placing the first and second positioning support assemblies 1 and 2 on the base plate facilitates their placement on the assembly line and allows for a more rational arrangement of the range hood assembly process.

[0049] See also Figure 3 The tooling for assembling the gas pipe, valve body, and stove chassis of the present invention comprises a first base plate 3 and a second base plate 4. The first positioning support assembly 1 is disposed on the first base plate 3, and the second positioning support assembly 2 is disposed on the second base plate 4. By disposing the first positioning support assembly 1 on the first base plate 3 and the second positioning support assembly 2 on the second base plate 4, the first positioning support assembly 1 and the second positioning support assembly 2 can be disposed separately, separating the process of assembling the gas pipe 01 and valve body 02 from the workstation of assembling the gas pipe 01 and chassis 03, thereby improving assembly efficiency.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for assembling a gas pipe, a valve body and a stove chassis, characterized in that: include: A first positioning support assembly (1) is used to support the gas pipe and the valve body when the valve body and the gas pipe are assembled, and to limit the gas pipe and the valve body; A second positioning support assembly (2) is used to support the gas pipe equipped with the valve body and the base of the stove when the gas pipe and the base are assembled together, and to limit the gas pipe and the base; The surface on which the gas pipe is supported on the first positioning support assembly (1) is set as the first supporting surface, and the mounting surface on which the gas pipe is supported on the second positioning support assembly (2) is set as the second supporting surface, and the first supporting surface and the second supporting surface are arranged opposite to each other.

2. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 1, characterized in that: The first positioning support assembly (1) comprises a first gas pipe support and a first valve body support (11), the first gas pipe support comprises a first support (12) and a second support (13), the first support (12) supports the gas pipe along a first direction, the second support (13) is arranged to support the gas pipe along a second direction, and the first valve body support (11) is arranged opposite to the first support (12).

3. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 2, characterized in that: There are two first support members (12), the two first support members (12) are arranged along the same straight line, and the first valve body support member (11) is arranged between the two first support members (12) and is not located on the same straight line as the two first support members (12).

4. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 2, characterized in that: The first positioning support assembly (1) further comprises a limiting block (14), and the limiting block (14) is used in conjunction with the first valve body support member (11) to limit the position of the valve body.

5. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 4, characterized in that: The limiting block (14) is provided with one, two, or several limiting holes (141), and the limiting holes (141) are used to fix the valve stem of the valve body.

6. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 4, characterized in that: The first support member (12) is provided with a first limiting groove (121) adapted to the outer diameter of the gas pipe, and the second support member (13) is provided with a second limiting groove (131) adapted to the outer diameter of the gas pipe.

7. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 1, characterized in that: The second positioning support assembly (2) comprises a second gas pipe support and a chassis support (21), the second gas pipe support comprises a third support (22) and a fourth support (23), the third support (22) supports the gas pipe along a first direction, the fourth support (23) is arranged to support the gas pipe along a second direction, and the chassis support (21) is used to support the chassis of the cooker.

8. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 7, characterized in that: The second positioning support assembly (2) further includes a second valve body support member (24), and the second valve body support member (24) is arranged opposite to the third support member (22).

9. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 1, characterized in that: It also includes a base plate, and the first positioning support assembly (1) and the second positioning support assembly (2) are arranged on the base plate.

10. The tooling for assembling the gas pipe, valve body and stove chassis according to claim 9, characterized in that: The base plate comprises a first base plate (3) and a second base plate (4); the first positioning support assembly (1) is arranged on the first base plate (3); and the second positioning support assembly (2) is arranged on the second base plate (4).

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