Modularly-assembled wallboard operation tool

Abstract

The utility model provides a modular assembly wallboard operation tool, which relates to the technical field of suspension type operation platforms, and comprises a platform main body, a guardrail device and an inclined strut structure, the guardrail device is arranged on the outer edge of the top of the platform body and connected with the platform body through a clamping and locking structure, and the clamping and locking structure enables the connection mode of the guardrail device and the platform body to be switched between fixed connection and rotary connection. The inclined strut structure is connected to the bottom of the platform body, and the inclined strut structure and the platform body are detachable. The wallboard operation tool assembled in a modularized mode meets the requirement for firm fixation at the position 1.5 m below the circumferential seam of the wallboard, meanwhile, the wallboard operation tool can be manufactured in a modularized mode, has foldability, and is easy to manufacture, use and transport.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of suspension type operation platform, specifically relates to a modular assembly's wallboard operation tool. BACKGROUND

[0002] Various temporary operation tables or operation racks are often set up at construction sites to carry out various masonry, decoration and painting operations. Generally speaking, the framework type platform used for carrying materials and performing various operations within a certain construction period is called an operation platform. The operation platform includes a suspension type operation platform.

[0003] In addition, the hanging piece is provided with a clamping groove extending along the length direction of the steel beam. The clamping groove is clamped on at least a part of the steel beam, and the suspension assembly as a whole can slide along the length direction of the steel beam. The operation platform is fixed to the high and large space building by setting the suspension column, and can move in a direction perpendicular to the upper surface of the platform panel. During wallboard construction, personnel mainly weld the wallboard ring joint. The platform needs to be set at 1.5 meters below the wallboard ring joint. The above-mentioned operation platform cannot be used in wallboard construction.

[0004] When the suspension type operation platform is used, the protective fence stands on the surface of the operation platform, which is relatively inconvenient during transportation and storage. Therefore, it needs to be improved to make it more convenient to use.

[0005] Therefore, the inventors of the present application designed a modular assembly wallboard operation tool to overcome the above technical problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model wants to solve the technical problem that the suspension type operation platform in the prior art is inconvenient to transport and store when the protective fence stands on the surface of the operation platform. The utility model provides a modular assembly wallboard operation tool.

[0007] The utility model solves the above technical problems through the following technical scheme:

[0008] The utility model provides a modular assembly wallboard operation tool, characterized in that the modular assembly wallboard operation tool comprises a platform main body, a fence device and an inclined strut structure, the fence device is arranged on the top outer edge of the platform main body, the fence device and the platform main body are connected through a clamping locking structure, the clamping locking structure switches the connection mode of the fence device and the platform main body between fixed connection and rotary connection, the inclined strut structure is connected to the bottom of the platform main body, and the inclined strut structure and the platform main body are detachable.

[0009] According to one or more embodiments of the present application, the top two sides of the platform body are rotatably connected with side tables.

[0010] According to one or more embodiments of the present application, the guardrail device comprises guard rods and guardrails; the guardrails are horizontally arranged and connected to the top of the guard rods; the guard rods are vertically arranged and comprise at least two, and the two guard rods are connected to the top two sides of the platform body.

[0011] According to one or more embodiments of the present application, the guardrail device further comprises an auxiliary rod, which is connected between the two guard rods and has a stand connected thereto.

[0012] According to one or more embodiments of the present application, the clamping and locking structure comprises a butt joint pipe, a butt joint plate, a sliding ring and a locking mechanism; the bottom of the guard rod is connected with a butt joint rod; the butt joint pipe is fixedly connected to the top two sides of the platform body; the butt joint plate is vertically arranged, one end of the butt joint plate is rotatably connected to the butt joint pipe, and the other end of the butt joint plate is connected to the sliding ring; the locking mechanism is arranged on the sliding ring to lock and fix the guard rod and the sliding ring together; when the guard rod passes through the sliding ring and the butt joint rod is inserted into the butt joint pipe, the guardrail device is fixedly connected to the platform body; when the guard rod passes through the sliding ring and the butt joint rod is not connected to the butt joint pipe, the butt joint plate can rotate around the butt joint pipe, and the guardrail device is rotatably connected to the platform body.

[0013] According to one or more embodiments of the present application, the locking mechanism comprises a locking table and a locking bolt; a connecting hole is formed in the side surface of the sliding ring, the locking table is arranged on the sliding ring around the connecting hole, the locking bolt passes through the connecting hole, and the locking bolt tightens the guard rod, so as to lock and fix the guard rod and the sliding ring together.

[0014] According to one or more embodiments of the present application, the bottom of the platform body is provided with a mounting table, the mounting table has a sliding groove structure, and the inclined support structure is detachably connected to the sliding groove structure.

[0015] According to one or more embodiments of the utility model, the installation platform has inner edges extending from both sides to the middle, the adjacent side of the installation platform provided with the inner edges is provided with an opening, forming the chute structure; the diagonal brace structure comprises a diagonal brace, a connecting rod, a bottom platform, a connecting platform and a mounting plate; the diagonal brace is fixed at the bottom of the bottom platform, one end of the connecting rod is connected to the diagonal brace, the other end of the connecting rod is connected to the bottom platform, the upper portion of the bottom platform is connected with the connecting platform, the upper portion of the connecting platform is connected with the mounting plate, the width of the connecting platform is less than the interval of the inner edges on both sides of the installation platform, the mounting plate is arranged in the chute structure of the installation platform, and the width of the mounting plate is greater than the interval of the inner edges on both sides of the installation platform.

[0016] According to one or more embodiments of the utility model, the top of the platform body is connected with a positioning seat on both sides, the positioning seat is internally provided with a rotating shaft, the rotating shaft is fixedly connected with the side platform, so that the side platform is rotationally connected with the platform body.

[0017] According to one or more embodiments of the utility model, the inner edge of the top of the platform body is provided with a boss and a right-angle connecting platform, the right-angle connecting platform is arranged on the inner side of the boss, the boss is internally provided with a bolt, and the bolt is used for fixedly connecting with a wall.

[0018] The utility model has the following advantages:

[0019] The wallboard operation tool of the utility model has at least the following advantages:

[0020] The wallboard operation tool of the utility model realizes the requirement of being fixed firmly at 1.5 meters below the wallboard ring joint, can be modularly manufactured and has foldability, and is easy to manufacture, use and transport. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other features, properties and advantages of the utility model will become more apparent through the following description in combination with the drawings and embodiments, wherein the same reference signs always represent the same features, and wherein:

[0022] Figure 1 It is a front view cross-sectional structure schematic view of the wallboard operation tool of the utility model.

[0023] Figure 2 It is a side view cross-sectional structure schematic view of the wallboard operation tool of the utility model.

[0024] Figure 3 It is a side view cross-sectional schematic view of the diagonal brace structure in the wallboard operation tool of the utility model.

[0025] Figure 4 is a sectional structure schematic view of the guardrail device in the modular assembly wallboard operation tool.

[0026]

Reference signs

[0027] Platform main body 100

[0028] Clamping and locking structure 110

[0029] Butt joint pipe 111

[0030] Butt joint plate 112

[0031] Sliding ring 113

[0032] Locking mechanism 114

[0033] Locking table 115

[0034] Locking bolt 116

[0035] Side table 120

[0036] Positioning seat 121

[0037] Positioning seat 122

[0038] Mounting table 130

[0039] Sliding groove structure 131

[0040] Inner edge 132

[0041] Boss 140

[0042] Right-angle connecting table 150

[0043] Latches 160

[0044] Guardrail device 200

[0045] Guard bar 210

[0046] Butt joint rod 211

[0047] Guardrail 220

[0048] Protruding part 221

[0049] Auxiliary rod 230

[0050] Stand 231

[0051] Inclined support structure 300

[0052] Inclined support 310

[0053] Connecting rod 320

[0054] Base 330

[0055] Connecting table 340

[0056] Mounting plate 350 DETAILED DESCRIPTION

[0057] In order to make the above objectives, characteristics and advantages of the present application more apparent, the following will describe the specific embodiments of the present application in detail in connection with the drawings.

[0058] The embodiments of the present application will now be described in detail by referring to the drawings. The preferred embodiments of the present application will now be described in detail by referring to the drawings. The same reference numerals are used to designate the same or similar parts throughout all the drawings. Also, although the terms used in the present application are selected from publicly-known terms, some of the terms mentioned in the specification of the present application can be selected by the applicant himself or herself according to his or her judgment, and the detailed meanings thereof are described in the relevant part of the description herein. Also, the present application is to be understood not only by the actual terms used, but also by the meanings implied by each term.

[0059] Referring to Figures 1-4 The present application provides a modularly-assembled wallboard work tool, which comprises a platform body 100, a guardrail device 200 and a diagonal brace structure 300.

[0060] The guardrail device 200 is arranged at the top outer edge of the platform body 100, and the guardrail device 200 is connected with the platform body 100 through a clamping and locking structure 110. The clamping and locking structure 110 switches the connection mode of the guardrail device 200 and the platform body 100 between fixed connection and rotary connection.

[0061] The diagonal brace structure 300 is connected at the bottom of the platform body 100, and the diagonal brace structure 300 is detachable with the platform body 100.

[0062] When the guardrail device 200 is fixedly connected with the platform body 100, the guardrail device 200 can be firmly fixed on the platform body 100 to provide protection for the workers and ensure the safety of work.

[0063] When the guardrail device 200 is rotatably connected with the platform body 100, the guardrail device 200 is folded and stored on the surface of the platform body 100 by turning over, so that the folding and storage property of the guardrail device 200 is realized.

[0064] The inclined support structure 300 is located at the bottom of the platform body 100 and can assist in supporting the platform body 100. Since the inclined support structure 300 is detachable from the platform body 100, when additional support provided by the inclined support structure 300 is not needed, the inclined support structure 300 can be detached, and the detached inclined support structure 300 is convenient to store.

[0065] The guardrail device 200 and the inclined support structure 300 provided above improve the portability and adaptability of the wallboard operation tooling device of the utility model for modular assembly, and can solve the problem that the suspended operation platform is inconvenient to transport and store as described in the background art.

[0066] Referring to Figure 1 and Figure 2 , as a preferred embodiment of the wallboard operation tooling device of the utility model for modular assembly, the top of the platform body 100 is rotatably connected with a side table 120.

[0067] The side table 120 rotatably connected with the platform body 100 can be flipped on the surface of the platform body 100, and when two or more platform bodies 100 are arranged side by side, the side table 120 can be used to fill the connecting gap between the two or more platform bodies 100.

[0068] Referring to Figure 2 and Figure 4 , as a preferred embodiment of the wallboard operation tooling device of the utility model for modular assembly, the guardrail device 200 comprises a protective rod 210 and a protective fence 220.

[0069] The protective fence 220 is horizontally arranged and connected to the top of the protective rod 210.

[0070] The protective rod 210 is vertically arranged and comprises at least two protective rods 210, which are connected to the top of the platform body 100 on both sides.

[0071] Referring to Figure 2 and Figure 4 , as a preferred embodiment of the wallboard operation tooling device of the utility model for modular assembly, the guardrail device 200 further comprises an auxiliary rod 230, which is connected between the two protective rods 210, and a stand 231 is connected to the auxiliary rod 230.

[0072] It should be noted that the top end of the protective rod 210 is provided with the protective fence 220, and the inner side of the protective rod 210 is provided with the auxiliary rod 230.

[0073] The guard bars 210 and the guard rails 220 are used for preventing accidents such as falling of people, and improving the safety of construction, when the auxiliary bars 230 are connected between two guard bars 210, they and the guard bars 210 constitute a more stable frame structure, which improves the stability of the guard rail device 200, the stand columns 231 connected on the auxiliary bars 230 improve the structural stability and also have the auxiliary protection and further safety effect.

[0074] With reference to Figure 1 , Figure 2 and Figure 4 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the clamping and locking structure 110 comprises: a butt joint pipe 111, a butt joint plate 112, a sliding ring 113 and a locking mechanism 114; the bottom of the guard bar 210 is connected with the butt joint bar 211;

[0075] The butt joint pipe 111 is fixedly connected on the top of the platform body 100 on both sides;

[0076] The butt joint plate 112 is vertically arranged, one end of the butt joint plate 112 is rotationally connected to the butt joint pipe 111, and the other end of the butt joint plate 112 is connected with the sliding ring 113;

[0077] The locking mechanism 114 is arranged on the sliding ring 113, and the guard bar 210 and the sliding ring 113 are locked and fixed together;

[0078] When the guard bar 210 passes through the sliding ring 113 and the butt joint bar 211 is inserted into the butt joint pipe 111, the guard rail device 200 is fixedly connected with the platform body 100; when the guard bar 210 passes through the sliding ring 113 and the butt joint bar 211 is not connected with the butt joint pipe 111, the butt joint plate 112 can rotate around the butt joint pipe 111, and the guard rail device 200 is rotationally connected with the platform body 100.

[0079] Preferably, one end of the butt joint plate 112 is rotationally connected to the butt joint pipe 111 through a rotating shaft 122 structure, so that the butt joint plate 112 can rotate around the platform body 100 to fold and store the guard rail device 200 on the surface of the platform body 100.

[0080] Preferably, the guard bar 210 is provided with a protruding part 221, and the protruding part 221 is located on the upper and lower sides of the sliding ring 113, so as to limit the relative position of the guard bar 210 and the sliding ring 113.

[0081] With reference to Figure 1 , Figure 2 and Figure 4 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the locking mechanism 114 comprises a locking table 115 and a locking bolt 116;

[0082] The side surface of the sliding ring 113 is provided with a connecting hole, the locking platform 115 is arranged on the sliding ring 113 around the connecting hole, and the locking bolt 116 passes through the connecting hole and abuts against the protection rod 210, so that the protection rod 210 and the sliding ring 113 are locked and fixed together.

[0083] Preferably, the top outer edge of the platform body 100 is provided with the butt joint pipe 111, one side of the butt joint pipe 111 is movably provided with the connecting plate, the inside of the butt joint pipe 111 is provided with the butt joint rod 211, the cross section of the butt joint rod 211 is smaller than that of the butt joint pipe 111, the butt joint rod 211 and the butt joint pipe 111 form a clamping structure, the top end of the butt joint rod 211 is fixedly provided with the protection rod 210, the outside of the protection rod 210 is provided with the sliding ring 113, the cross section of the sliding ring 113 is larger than that of the protection rod 210, the sliding ring 113 and the protection rod 210 form a sliding structure, one side of the sliding ring 113 is fixedly provided with the locking platform 115, the inside of the locking platform 115 is provided with the locking bolt 116, one side of the locking bolt 116 extends to the inside of the sliding ring 113, the top end of the protection rod 210 is provided with the protection fence 220, and the inside of the protection rod 210 is provided with the auxiliary rod 230.

[0084] Specifically, as shown in Figure 1 、 Figure 2 and Figure 4 , in use, after the butt joint rod 211 at the bottom of the protection rod 210 is inserted into the inside of the butt joint pipe 111, the locking bolt 116 is locked, the protection rod 210 and the protection fence 220 are erected on the platform body 100 and used, conversely, after the locking bolt 116 is loosened, the protection rod 210 is lifted upward, the butt joint rod 211 at the bottom is separated from the butt joint pipe 111, and then the protection rod 210 and the protection fence 220 can be folded and stored on the surface of the platform body 100.

[0085] Referring to Figure 1 、 Figure 2 and Figure 3 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the bottom of the platform body 100 is provided with the mounting table 130, the mounting table 130 has the sliding groove structure 131, and the inclined support structure 300 is detachably connected with the sliding groove structure 131.

[0086] Referring to Figure 1 、 Figure 2 and Figure 3 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the mounting table 130 has the inner edge 132 extending from both sides to the middle, the adjacent sides of the mounting table 130 provided with the inner edge 132 are provided with openings, and the sliding groove structure 131 is formed; the inclined support structure 300 comprises the inclined support 310, the connecting rod 320, the bottom table 330, the connecting table 340 and the mounting plate 350;

[0087] The inclined support 310 is fixed at the bottom of the base 330, one end of the connecting rod 320 is connected to the inclined support 310, the other end of the connecting rod 320 is connected to the base 330, the upper part of the base 330 is connected with the connecting table 340, the upper part of the connecting table 340 is connected with the mounting plate 350, the width L1 of the connecting table 340 is smaller than the interval D of the inner edges 132 on both sides of the mounting table 130, the mounting plate 350 is arranged in the sliding groove structure 131 of the mounting table 130, and the width L2 of the mounting plate 350 is greater than the interval D of the inner edges 132 on both sides of the mounting table 130.

[0088] Preferably, the bottom end of the platform body 100 is provided with the mounting table 130, a plurality of mounting tables 130 are arranged at the bottom end of the platform body 100 in parallel, the mounting table 130 is internally provided with the mounting plate 350, the cross section of the mounting plate 350 is smaller than that of the mounting table 130, the mounting plate 350 and the mounting table 130 form a detachable structure, the bottom end of the mounting plate 350 is fixedly provided with the base 330, the bottom end of the base 330 is fixedly provided with the inclined support 310, and the top end of the inclined support 310 is fixedly provided with the connecting rod 320.

[0089] Specifically, as shown in Figure 1 , Figure 2 and Figure 3 , in use, the mounting plate 350 at the top of the inclined support 310 can be slid into the side end opening of the mounting table 130, so that the inclined support 310 is installed at the bottom position of the platform body 100, and a plurality of groups of inclined supports 310 are matched to support the platform body 100 from the bottom side.

[0090] Referring to Figure 1 and Figure 2 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the top of the platform body 100 is connected with the positioning seat 121 on both sides, the positioning seat 121 is internally provided with the rotating shaft 122, and the rotating shaft 122 is fixedly connected with the side table 120, so that the side table 120 is rotationally connected with the platform body 100.

[0091] Referring to Figure 1 and Figure 2 , as a preferred embodiment of the modular assembly wallboard operation tool of the utility model, the top of the platform body 100 is internally provided with the boss 140 and the right-angle connecting table 150, the right-angle connecting table 150 is arranged at the inner side of the boss 140, the boss 140 is internally provided with the bolt 160, and the bolt 160 is used for fixedly connecting with a wall.

[0092] Preferably, one side of the top end of the platform body 100 is fixed with a boss 140, the outer side of the boss 140 is provided with a right-angle connecting table 150, the inner side of the boss 140 is provided with a latch 160, one end of the top end of the platform body 100 is fixed with a positioning seat 121, the inner side of the positioning seat 121 is provided with a rotating shaft 122, the cross section of the positioning seat 121 is larger than the cross section of the rotating shaft 122, and the positioning seat 121 and the rotating shaft 122 form a rotating structure, and one end of the rotating shaft 122 is fixed with a side table 120.

[0093] Specifically, as shown in Figure 1 and Figure 2 shown, in use, the rotating shaft 122 at the side end of the side table 120 is movably connected with the positioning seat 121 on the surface of the platform body 100, so that the side table 120 can be flipped on the surface of the platform body 100, and in use, can be used to fill the connecting gap between the two groups of platform bodies 100.

[0094] The modular assembly wallboard operation tool of the utility model realizes the requirement of being fixed firmly at 1.5 meters below the wallboard ring joint, and can be modularly manufactured and has foldability, and is easy to manufacture, use and transport.

[0095] In summary, the modular assembly wallboard operation tool has the following beneficial effects:

[0096] Firstly, the modular assembly wallboard operation tool is provided with the connecting plate, the locking bolt 116 at the side end of the sliding ring 113 is loosened, the protective rod 210 can be pulled up, the butt joint rod 211 at the bottom side of the protective rod 210 is separated from the butt joint pipe 111, then the protective rod 210 and the protective fence 220 are flipped and folded and stored on the surface of the platform body 100 by means of the movable connection between the connecting plate and the butt joint pipe 111, and the folding and storage property of the protective fence 220 is realized.

[0097] Secondly, the modular assembly wallboard operation tool is provided with the side table 120, the rotating shaft 122 at the side end of the side table 120 is movably installed on the inner side of the positioning seat 121 and can be flipped, when a plurality of platform bodies 100 are used together, the flipped side table 120 can be placed on other platform bodies 100 to fill the gap between them, and the auxiliary connection property of the platform body 100 is realized.

[0098] Thirdly, the modular assembly wallboard operation tool is provided with the mounting table 130, a plurality of mounting tables 130 are installed in parallel at the bottom position of the platform body 100, in use, the mounting plate 350 at the top of the inclined support 310 can be slid into the inner side of the mounting table 130 for installation, the inclined support 310 cooperates with the connecting rod 320 and is located at the bottom of the platform body 100, and can assist in supporting the platform body 100, and the convenience of disassembly and assembly of the inclined support 310 is realized.

[0099] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A modular assembly wallboard work fixture, characterized by, The modular assembled wallboard operation tool includes a platform body, a guardrail device and a diagonal support structure. The guardrail device is arranged on the top outer edge of the platform body, and the guardrail device is connected with the platform body through a clamping locking structure. The diagonal support structure is connected to the bottom of the platform body and is detachable with the platform body.

2. The modular assembly wallboard work fixture of claim 1 wherein, The top of the platform body is rotatably connected with side tables on both sides.

3. The modular assembly wallboard work fixture of claim 1 wherein, The guardrail device includes a protection rod and a protection fence. The protection fence is horizontally arranged and connected to the top of the protection rod. The protection rod is vertically arranged and includes at least two protection rods connected to the top of the platform body on both sides.

4. The modular assembly wallboard work fixture of claim 3, wherein, The guardrail device further includes an auxiliary rod connected between the two protection rods, and a stand connected to the auxiliary rod.

5. The modular assembly wallboard work fixture of claim 3, wherein, The clamping locking structure includes a butt joint pipe, a butt joint plate, a sliding ring and a locking mechanism. The butt joint pipe is fixedly connected to the top of the platform body on both sides. The butt joint plate is vertically arranged, one end of the butt joint plate is rotatably connected to the butt joint pipe, and the other end of the butt joint plate is connected to the sliding ring. The locking mechanism is arranged on the sliding ring to lock and fix the protection rod and the sliding ring together. When the protection rod passes through the sliding ring and the butt joint rod is inserted into the butt joint pipe, the guardrail device is fixedly connected with the platform body.

6. The modular assembly wallboard work fixture of claim 5, wherein, When the protection rod passes through the sliding ring and the butt joint rod is not connected with the butt joint pipe, the butt joint plate can rotate around the butt joint pipe, and the guardrail device is rotatably connected with the platform body. The locking mechanism includes a locking table and a locking bolt.

7. The modular assembly wallboard work fixture of claim 1 wherein, The side surface of the sliding ring is provided with a connecting hole, the locking table is arranged around the connecting hole on the sliding ring, the locking bolt passes through the connecting hole, and the locking bolt tightens the protection rod, so as to lock and fix the protection rod and the sliding ring together.

8. The modular assembly wallboard work fixture of claim 7, wherein, The bottom of the platform body is provided with a mounting table having a sliding groove structure, and the diagonal support structure is detachably connected with the sliding groove structure. The mounting table has inner edges extending from both sides to the middle, and the adjacent sides of the mounting table provided with the inner edges are provided with openings to form the sliding groove structure.

9. The modular assembly wallboard work fixture of claim 2 wherein, The diagonal support structure includes a diagonal support, a connecting rod, a bottom table, a connecting table and a mounting plate. The diagonal support is fixed to the bottom of the bottom table, one end of the connecting rod is connected to the diagonal support, the other end of the connecting rod is connected to the bottom table, the upper part of the bottom table is connected with the connecting table, the upper part of the connecting table is connected with the mounting plate, the width of the connecting table is less than the distance between the inner edges of the mounting table on both sides, the mounting plate is arranged in the sliding groove structure of the mounting table, and the width of the mounting plate is greater than the distance between the inner edges of the mounting table on both sides. The top of the platform body is rotatably connected with a positioning seat, the positioning seat is internally provided with a rotating shaft, and the rotating shaft is fixedly connected with the side table to rotatably connect the side table with the platform body.

10. The modular assembly wallboard work fixture of claim 1 wherein, The inner side of the top of the platform body is provided with a boss and a right-angle connecting table, the right-angle connecting table is arranged on the inner side of the boss, the boss is internally provided with a latch, and the latch is used for fixed connection with a wall.

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