Disclosed is a disc buckle outer frame netting system compatible with a climbing frame netting

Abstract

This utility model discloses a disc-lock scaffolding mesh system compatible with climbing scaffolding mesh panels. The system includes disc-lock vertical rods, and horizontal rods and crossbars are provided between adjacent horizontally adjacent disc-lock vertical rods. The horizontal and crossbars are spaced vertically. The disc-lock vertical rods, horizontal rods, and crossbars form a single disc-lock scaffolding structure. This disc-lock scaffolding system can utilize mesh panels from old or idle climbing scaffolding structures; simply install the mesh panels vertically. Compared to using custom-made disc-lock mesh panels, this significantly reduces costs. A rectangular tube connector is also included. The height of the rectangular tube, combined with the height of the mesh panel, perfectly matches the step distance of the disc-lock scaffolding. The rectangular tube supports the mesh panel. The rectangular tube connector is stronger than steel plate connectors and eliminates the need for additional outer horizontal rods on the disc-lock scaffolding, reducing the load-bearing capacity of the scaffolding and making it more resistant to risks and safer.

Description

Technical Field

[0001] This utility model relates to the field of climbing scaffold mesh technology, specifically a disc-buckle external scaffold mesh system compatible with climbing scaffold mesh. Background Technology

[0002] Climbing scaffold mesh, also known as climbing scaffold mesh, is a widely used safety protection device on construction sites. It mainly consists of steel wire mesh, a modular scaffold, and connectors. Installed on the outside of the scaffold, it prevents personnel and materials from falling. Climbing scaffold mesh has high load-bearing capacity and stability, effectively ensuring the safety of the construction site. As the construction industry shifts its focus from high-rise buildings to mid- and low-rise buildings, the existing method of erecting scaffolds for buildings no higher than 24 meters is also changing from climbing scaffolds to modular scaffolds. There is a significant amount of unused climbing scaffold mesh in the industry. Therefore, using the all-steel wire mesh of climbing scaffolds in modular scaffolds is a promising solution. The above is an extremely effective way to reduce efficiency. The main module of the traditional disc-lock scaffold is a span of 1500m and a step distance (height) of 2000m. The main specifications of the climbing scaffold's all-steel mesh are a width of 1940mm and a height of 1494m. The two have different modules. There are connectors on the market, but a large number of horizontal bars on the outside of the disc-lock scaffold are needed to make the step distance of 2000mm of the disc-lock scaffold meet the module of 1500mm. The increase of horizontal bars will lead to an increase in erection cost. At the same time, the load-bearing capacity of the scaffold will also increase, and the risk resistance will decrease. Therefore, we propose a disc-lock scaffold mesh system that is compatible with climbing scaffold mesh. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome the existing defects and provide a disc-lock scaffolding mesh system compatible with climbing scaffolding mesh panels. This disc-lock scaffolding system can utilize mesh panels from old or idle climbing scaffolding; simply install the mesh panels vertically. Compared to using custom-made disc-lock mesh panels, it can reduce costs significantly. Furthermore, it incorporates a rectangular tube connector. The height of the rectangular tube, combined with the height of the mesh panel, perfectly matches the step distance of the disc-lock scaffolding. The rectangular tube supports the mesh panel. The rectangular tube connector is stronger than steel plate connectors and eliminates the need for additional outer horizontal bars on the disc-lock scaffolding, reducing the load-bearing capacity of the scaffolding and making it more resilient and safer. This effectively solves the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a disc-buckle external scaffold mesh system compatible with climbing scaffold mesh panels, including disc-buckle vertical rods;

[0005] Disc-lock vertical members: Each horizontally adjacent disc-lock vertical member is connected to a disc-lock horizontal member and a base. These horizontal and base members are spaced vertically. The disc-lock vertical members, horizontal members, and base members together form the disc-lock scaffold. Rectangular tube connectors are provided on the outer surfaces of the horizontal and horizontal members. Evenly distributed mesh panels are located on the front side of the disc-lock scaffold. The front ends of the rectangular tube connectors mate with the rear ends of the mesh panels, allowing for quick connection between the disc-lock scaffold and the mesh panels. The disc-lock scaffold system can utilize existing or idle climbing scaffold mesh panels; simply install the mesh panels vertically. Compared to using custom-made disc-lock mesh panels, this significantly reduces costs. A rectangular tube connector is also included; the height of the rectangular tube, combined with the height of the mesh panel, perfectly matches the step distance of the disc-lock scaffold. The rectangular tube supports the mesh panel. Rectangular tube connectors are stronger than steel plate connectors and eliminate the need for additional outer horizontal members, reducing the load on the scaffold and enhancing its resilience and safety.

[0006] Furthermore, the rectangular tube connector can be a first connector, which includes a connecting seat, a snap-fit ​​piece, a strip opening, a limiting piece, a connecting piece, a U-shaped notch, a fixing bolt, and a fixing nut. The lower outer surface of both the horizontal bar and the disc buckle crossbar is provided with a connecting seat. The snap-fit ​​piece is located at the front end of the connecting seat and is installed in conjunction with the longitudinally adjacent mesh piece. The strip opening is located in the middle of the front side inside the connecting seat. The limiting piece is inserted into the inside of the strip opening, with its front end fitting against the rear end of the mesh piece. The connecting piece is rotatably connected to the connecting seat. The upper rear side of seat one and the lower front side of connecting piece one are both in contact with the upper middle part of the upper end of connecting seat one. The lower middle part of connecting piece one is in contact with the upper upper surface of the horizontal bar and the crossbar of the disc buckle. U-shaped notches one are all opened on the upper front side of connecting piece one. Fixing bolt one is rotatably connected to the upper middle part of connecting seat one. The outer surface of fixing bolt one is fitted with the inner wall of the vertically adjacent U-shaped notch one. Fixing nuts are all threaded to the outer surface of fixing bolt one. The lower end of fixing nuts is in contact with the upper front side of the vertically adjacent connecting piece one. The first connecting piece can be used to connect the disc buckle outer frame and the mesh.

[0007] Furthermore, the rectangular tube connector can also be a second connector, which includes a second connecting seat, a second snap-fit ​​piece, a second strip opening, a second limiting piece, a second connecting piece, a second U-shaped notch, and a second fixing bolt. The lower end of the outer surface of both the horizontal bar and the disc buckle crossbar is provided with a second connecting seat. The second snap-fit ​​piece is located at the front end of the second connecting seat and is installed in conjunction with the longitudinally adjacent mesh pieces. The second strip opening is located inside the middle front side of the second connecting seat. The second limiting piece is inserted into the inside of the second strip opening. The front end of the second limiting piece... All are attached to the rear end of the mesh. The second connecting piece is set on the upper rear side of the second connecting seat. The lower front side of the second connecting piece is attached to the upper middle part of the second connecting seat. The lower middle part of the second connecting piece is attached to the upper upper surface of the horizontal bar and the crossbar of the disc buckle. The second U-shaped notch is opened on the upper front side of the second connecting piece. The second fixing bolt is inserted into the middle of the upper part of the second connecting seat. The outer surface of the second fixing bolt is fitted with the inner wall of the vertically adjacent second U-shaped notch. The second connecting piece can be used to connect the disc buckle frame and the mesh.

[0008] Furthermore, the rectangular tube connector can also be a third connector, which includes a third connecting seat, a third snap-fit ​​piece, a third strip opening, a third limiting piece, a third connecting piece, a third U-shaped notch, a third fixing bolt, and a washer. The lower outer surface of both the horizontal bar and the disc buckle crossbar is provided with a third connecting seat. The third snap-fit ​​pieces are all located at the front end of the third connecting seat and are installed in conjunction with the longitudinally adjacent mesh pieces. The third strip openings are all located inside the middle front side of the third connecting seat. The third limiting pieces are all inserted into the interior of the third strip openings, with the front end of each limiting piece fitting against the rear end of the mesh piece. The third connecting piece is rotatably connected to the third connecting seat. The upper rear side of the third connector and the lower front side of the third connector are all in contact with the upper middle part of the third connector. The lower middle part of the third connector is in contact with the upper upper surface of the horizontal bar and the crossbar of the disc buckle. The U-shaped notch is opened on the upper front side of the third connector. The fixing bolt is rotatably connected to the upper middle of the third connector. The outer surface of the fixing bolt is fitted with the inner wall of the vertically adjacent U-shaped notch. The gasket is set in the middle of the upper rear side of the third connector. The upper end of the gasket is in contact with the lower end of the outer surface of the vertically adjacent horizontal bar and the crossbar of the disc buckle. The third connector can be used to connect the disc buckle frame and the mesh.

[0009] Furthermore, the rectangular tube connector can also be a fourth connector, which includes a fourth connecting seat, a fourth snap-fit ​​piece, a fourth strip opening, a fourth limiting piece, a fourth connecting piece, a fourth U-shaped notch, and a fourth fixing bolt. The lower outer surface of both the horizontal bar and the disc buckle crossbar is provided with a fourth connecting seat. The fourth snap-fit ​​piece is located at the front end of the fourth connecting seat and is installed in conjunction with the longitudinally adjacent mesh piece. The fourth strip opening is located in the middle of the front side inside the fourth connecting seat. The fourth limiting piece is inserted into the inside of the fourth strip opening, and the front end of the fourth limiting piece is connected to the mesh. The rear end of the plate is attached, and the four connecting plates are rotatably connected to the upper rear side of the inner side of the four connecting seats. The lower front side of the four connecting plates is attached to the middle of the upper side of the four connecting seats. The lower middle of the four connecting plates is attached to the upper surface of the horizontal bar and the upper side of the crossbar of the disc buckle. The four U-shaped notches are opened on the upper front side of the four connecting plates. The four fixing bolts are rotatably connected to the middle of the upper side of the inner side of the four connecting seats. The outer surface of the four fixing bolts is fitted with the inner wall of the vertically adjacent U-shaped notches. The fourth connecting piece can be used to connect the disc buckle frame and the mesh.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This disc-buckle external scaffolding mesh system, which is compatible with climbing scaffolding mesh panels, has the following advantages:

[0011] 1. When in use, the mesh panels of old or idle climbing scaffolds can be used. The mesh panels can be installed vertically using rectangular tube connectors. The height of the rectangular tube connector and the height of the mesh panel are exactly matched with the step distance of the disc buckle scaffold. Compared with using custom mesh panels, this can reduce costs significantly.

[0012] 2. The rectangular tube connector is a rectangular tube structure. Rectangular tubes are stronger than steel plate connectors. The rectangular tubes support the mesh, which improves the structural strength of the connection and eliminates the need for additional horizontal bars on the outer side of the disc-lock scaffold. This reduces the load-bearing capacity of the scaffold and makes the scaffold more resistant to risks and safer. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram on the right side of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the horizontal bar of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure on the right side of the horizontal bar of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the rectangular tube connector of this utility model;

[0018] Figure 6 This is a schematic diagram of the right side of the rectangular tube connector of this utility model;

[0019] Figure 7 This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 8 This is an enlarged structural diagram of section B of the present invention;

[0021] Figure 9 This is an enlarged structural diagram of point C in this utility model;

[0022] Figure 10 This is a schematic diagram of the right side structure of the first connecting member of this utility model;

[0023] Figure 11 This is a schematic diagram of the structure of the limiting piece of this utility model;

[0024] Figure 12 This is a schematic diagram of the structure of the first connecting member of this utility model;

[0025] Figure 13 This is a schematic diagram of the structure of the second connecting member of this utility model;

[0026] Figure 14 This is a schematic diagram of the third connector structure of this utility model;

[0027] Figure 15 This is a schematic diagram of the fourth connecting member of this utility model.

[0028] In the diagram: 1. Disc buckle vertical bar, 2. Disc buckle horizontal bar, 3. Horizontal bar, 4. Rectangular tube connector, 5. Mesh panel, 6. First connector, 61. Connecting seat one, 62. Clip-on piece one, 63. Strip opening one, 64. Limiting piece one, 65. Connecting piece one, 66. U-shaped notch one, 67. Fixing bolt one, 68. Fixing nut, 7. Second connector, 71. Connecting seat two, 72. Clip-on piece two, 73. Strip opening two, 74. Limiting piece two, 75. Connecting piece two, 76. U-shaped notch two, 77. Fixing bolt two, 8. Third connector, 81. Connecting seat three, 82. Clip-on piece three, 83. Strip opening three, 84. Limiting piece three, 85. Connecting piece three, 86. U-shaped notch three, 87. Fixing bolt three, 88. Washer, 9. Fourth connector, 91. Connecting seat four, 92. Clip-on piece four, 93. Strip opening four, 94. Limiting piece four, 95. Connecting piece four, 96. Four U-shaped notches and four 97 fixing bolts. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-15 The present invention provides the following technical solution:

[0031] Example 1: A disc-lock scaffolding mesh system compatible with climbing scaffold mesh panels, including disc-lock vertical rods 1; disc-lock vertical rods 1: disc-lock horizontal rods 2 and horizontal bars 3 are provided between horizontally adjacent disc-lock vertical rods 1, and the disc-lock horizontal rods 2 and horizontal bars 3 are distributed vertically at intervals. The disc-lock vertical rods 1, disc-lock horizontal rods 2, and horizontal bars 3 form a disc-lock scaffolding as a whole. Rectangular tube connectors 4 are provided on the outer surface of the horizontal bars 3 and disc-lock horizontal rods 2. Uniformly distributed mesh panels 5 are provided on the front side of the disc-lock scaffolding. The front end of the rectangular tube connectors 4 is installed in conjunction with the rear end of the mesh panels 5. The front end of the rectangular tube connectors 4 is snapped into the rear end of the mesh panels 5. The disc-lock scaffolding and mesh panels 5 can be quickly connected through the rectangular tube connectors 4. The disc-lock scaffolding system can utilize the mesh panels 5 of old and idle climbing scaffolding. Vertical installation is possible, significantly reducing costs compared to using custom-made mesh panels with disc buckles. A rectangular tube connector 4 is also included; the height of the rectangular tube connector 4, combined with the height of the mesh panel 5, perfectly matches the step distance of the disc buckle scaffold. The mesh panel 5 is supported by the rectangular tube. The rectangular tube connector 4 is stronger than steel plate connectors and eliminates the need for additional outer horizontal bars 3 on the disc buckle scaffold, reducing the load on the scaffold and increasing its resilience and safety. The rectangular tube connector 4 can be the first connector 6, which includes a connecting seat 61, a snap-fit ​​piece 62, a strip opening 63, a limiting piece 64, a connecting piece 65, a U-shaped notch 66, a fixing bolt 67, and a fixing nut 68. Connecting seats 61 are provided at the lower end of the outer surface of both the horizontal bar 3 and the disc buckle crossbar 2. The connecting base 61 is a complete rectangular tube. The snap-fit ​​pieces 62 are all located at the front end of the connecting base 61. Each snap-fit ​​piece 62 is installed in conjunction with the longitudinally adjacent mesh piece 5. Both the upper and lower ends of the snap-fit ​​piece 62 are bent backward to form a slot with the connecting base 61, allowing the mesh piece 5 to be snapped into the slot. The strip openings 63 are all located in the middle of the front side inside the connecting base 61. The upper strip opening 63 is longer than the lower strip opening 63. The limiting pieces 64 are all inserted into the strip openings 63. The front end of each limiting piece 64 is flush with the rear end of the mesh piece 5. The upper width of the limiting piece 64 is wider than the lower width. Together with the strip openings 63, it can quickly create a limiting effect for mesh pieces 5 of different specifications. Connecting piece 6... All five connecting pieces are rotatably connected to the upper rear side of the connecting seat 61. The lower front side of the connecting piece 65 is in contact with the upper middle part of the connecting seat 61. The lower middle part of the connecting piece 65 is in contact with the upper upper surface of the horizontal bar 3 and the disc buckle crossbar 2. The upper rear side of the connecting seat 61 and the lower middle part of the connecting piece 65 are both provided with mounting grooves. The inner wall of the mounting grooves is in contact with the outer surface of the horizontal bar 3 and the disc buckle crossbar 2. U-shaped notches 66 are all provided on the upper front side of the connecting piece 65. Fixing bolts 67 are rotatably connected to the upper middle part of the connecting seat 61. The outer surface of the fixing bolts 67 is in contact with the inner wall of the vertically adjacent U-shaped notches 66.All fixing nuts 68 are threaded onto the outer surface of fixing bolts 67. The lower end of each fixing nut 68 is abutted against the upper front side of the vertically adjacent connecting piece 65. The first connecting piece 6 can be used to connect the disc buckle outer frame to the mesh 5. The rectangular tube on the connecting seat 61 is a complete rectangular tube. The lower end of the outer surface of both the horizontal bar 3 and the disc buckle crossbar 2 is provided with a connecting seat 61, which is a complete rectangular tube.

[0032] Specifically, when the first connector 6 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove on the connecting seat 61 is aligned with the lower end of the outer surface of the disc buckle crossbar 2. The rectangular tube on the connecting seat 61 is a complete rectangular tube, which improves the connection strength at the structural connection. Then, the connecting piece 65 is deflected so that the lower front side of the connecting piece 65 is aligned with the upper middle part of the connecting seat 61, and the mounting groove at the lower end of the connecting seat 61 is aligned with the upper end of the outer surface of the disc buckle crossbar 2. Then, the fixing bolt 67 is rotated so that the fixing bolt 67... The outer surface is fitted with the inner wall of the U-shaped notch 66 in the middle. Then, the fixing nut 68 is rotated so that the lower end of the fixing nut 68 is tightly fitted with the upper end of the connecting piece 65, thereby fixing the connecting piece 65. Then, the mesh 5 is clipped into the slot. The limiting piece 64 is inserted into the inside of the strip opening 63. The upper end of the limiting piece 64 is tapped so that the front end of the limiting piece 64 is fitted with the rear end of the mesh 5. The beveled rear end of the limiting piece 64 is fitted with the inner wall of the strip opening 63, so that the limiting piece 64 is tightly inserted into the inside of the strip opening 63, thereby fixing the mesh 5. Example

[0033] The difference between this embodiment and Embodiment 1 is that:

[0034] In this embodiment, a disc-lock scaffolding mesh system compatible with climbing scaffold mesh panels includes disc-lock vertical rods 1; each horizontally adjacent disc-lock vertical rod 1 is provided with a disc-lock horizontal rod 2 and a horizontal bar 3, which are distributed vertically at intervals. The disc-lock vertical rods 1, disc-lock horizontal rods 2, and horizontal bars 3 form a disc-lock scaffolding as a whole. The outer surfaces of the horizontal bars 3 and disc-lock horizontal rods 2 are provided with rectangular tube connectors 4. The front side of the disc-lock scaffolding is provided with evenly distributed mesh panels 5. The front ends of the rectangular tube connectors 4 are fitted and installed with the rear ends of the mesh panels 5, and the front ends of the rectangular tube connectors 4 are snapped into the rear ends of the mesh panels 5. The disc-lock scaffolding and mesh panels 5 can be quickly connected through the rectangular tube connectors 4. The disc-lock scaffolding system can utilize the mesh panels 5 of old and idle climbing scaffolding, simply by... The mesh panel 5 can be installed vertically, which can reduce costs significantly compared to using custom mesh panels with disc buckles. A rectangular tube connector 4 is also included; the height of the rectangular tube connector 4, combined with the height of the mesh panel 5, perfectly matches the step distance of the disc buckle scaffold. The rectangular tube supports the mesh panel 5. The rectangular tube connector 4 is stronger than steel plate connectors and eliminates the need for additional outer horizontal bars 3 on the disc buckle scaffold, reducing the load on the scaffold and making the scaffold more resilient and safer. The rectangular tube connector 4 can also serve as a second connector 7, which includes a second connecting seat 71, a second snap-fit ​​piece 72, a second strip opening 73, a second limiting piece 74, a second connecting piece 75, a second U-shaped notch 76, and a second fixing bolt 77. The lower end of the outer surface of both the horizontal bar 3 and the disc buckle crossbar 2 is equipped with a second connecting seat 71. The rear side of connector 2 71 is plate-shaped, and the front side of connector 2 71 is U-shaped, providing a clearance effect for fixing bolt 2 77. Clamping pieces 2 72 are all located at the front end of connector 2 71. Clamping pieces 2 72 are all installed in conjunction with the longitudinally adjacent mesh 5. The upper and lower ends of clamping pieces 2 72 are bent backward to form a groove with connector 2 71, allowing the mesh 5 to be clamped inside the groove. Strip-shaped openings 2 73 are all opened in the middle front side inside connector 2 71. The length of the upper strip-shaped opening 2 73 is greater than the length of the lower strip-shaped opening 2 73. Limiting pieces 2 74 are all inserted into the inside of strip-shaped openings 2 73. The front end of limiting pieces 2 74 is abutted against the rear end of mesh 5. The width of the upper end of limiting pieces 2 74 is greater than the width of the lower end, allowing for quick... To limit the movement of different sizes of mesh panels 5, connecting pieces 2 75 are all located on the upper rear side of connecting base 2 71. A connecting port is provided on the upper rear side of connecting base 2 71. The rear end of the outer surface of connecting piece 2 75 is inserted into the inner wall of the connecting port. Connecting piece 2 75 can deflect on the upper rear side of connecting base 2 71 through the connecting port. The lower front side of connecting piece 2 75 is in contact with the upper middle part of connecting base 2 71. The lower middle part of connecting piece 2 75 is in contact with the upper upper surface of horizontal bar 3 and disc buckle crossbar 2. Mounting groove 2 is provided on the upper rear side of connecting base 2 71 and the lower middle part of connecting piece 2 75. The inner wall of mounting groove 2 is in contact with the outer surface of horizontal bar 3 and disc buckle crossbar 2. U-shaped notches 2 76 are all located on the upper front side of connecting piece 2 75.All fixing bolts 77 are inserted into the upper middle of the inner part of the connecting seat 71. The outer surface of each fixing bolt 77 mates with the inner wall of the vertically adjacent U-shaped recess 76. The outer surface of each fixing bolt 77 can be connected to the outer nut 1 via external threads, thereby fixing the connecting piece 75. The second connecting piece 7 can be used to connect the disc buckle outer frame and the mesh 5. The rear side of the rectangular tube formed by the connecting seat 71 is plate-shaped, which provides clearance and facilitates the fixing of the bolts. The second bolt 77 is installed such that the rear end of the outer surface of the second connecting piece 75 is inserted into the inner wall of the connecting port, and the second fixing bolt 77 is separable from the second connecting seat 71. The rear side of the second connecting seat 71 is plate-shaped, and the front side of the second connecting seat 71 is U-shaped, providing a clearance effect for the structure. A connecting port is opened on the upper rear side of the second connecting seat 71, and the rear end of the outer surface of the second connecting piece 75 is inserted into the inner wall of the connecting port. The second connecting piece 75 can be deflected on the upper rear side of the second connecting seat 71 through the connecting port. The second fixing bolt 77 is inserted into the middle of the upper part of the second connecting seat 71.

[0035] Specifically, when the second connector 7 is installed on the outer surface of the horizontal rod 3, the mounting groove 2 on the second connector 71 is aligned with the lower end of the outer surface of the horizontal rod 3. Then, the second connector 75 is deflected so that the lower front side of the second connector 75 is aligned with the upper middle part of the second connector 71, and the mounting groove 2 at the lower end of the second connector 71 is aligned with the upper end of the outer surface of the horizontal rod 3. Then, the second fixing bolt 77 is inserted so that the middle part of the outer surface of the second fixing bolt 77 is aligned with the inner wall of the second U-shaped notch 76. The rear side of the second connector 71 is plate-shaped. The front side is U-shaped, which provides a clearance effect for fixing bolt 2 77. Then, rotate the outer nut 1 so that the lower end of the outer nut 1 is close to the upper end of the connecting piece 2 75, thereby fixing the connecting piece 2 75. Then, the mesh 5 is clipped into the slot. Insert the limiting piece 2 74 into the inside of the strip opening 2 73. Tap the upper end of the limiting piece 2 74. The front end of the limiting piece 2 74 is in contact with the rear end of the mesh 5. The beveled rear end of the limiting piece 2 74 is in contact with the inner wall of the strip opening 2 73, so that the limiting piece 2 74 is tightly inserted into the inside of the strip opening 2 73, thereby fixing the mesh 5. Example

[0036] The difference between this embodiment and Embodiment 1 is that:

[0037] In this embodiment, a disc-lock scaffolding mesh system compatible with climbing scaffold mesh panels includes disc-lock vertical rods 1; each horizontally adjacent disc-lock vertical rod 1 is provided with a disc-lock horizontal rod 2 and a horizontal bar 3, which are distributed vertically at intervals. The disc-lock vertical rods 1, disc-lock horizontal rods 2, and horizontal bars 3 form a disc-lock scaffolding as a whole. The outer surfaces of the horizontal bars 3 and disc-lock horizontal rods 2 are provided with rectangular tube connectors 4. The front side of the disc-lock scaffolding is provided with evenly distributed mesh panels 5. The front ends of the rectangular tube connectors 4 are fitted and installed with the rear ends of the mesh panels 5, and the front ends of the rectangular tube connectors 4 are snapped into the rear ends of the mesh panels 5. The disc-lock scaffolding and mesh panels 5 can be quickly connected through the rectangular tube connectors 4. The disc-lock scaffolding system can utilize the mesh panels 5 of old and idle climbing scaffolding, simply by... The mesh panel 5 can be installed vertically, which can reduce costs significantly compared to using custom mesh panels with disc buckles. A rectangular tube connector 4 is also included; the height of the rectangular tube connector 4, combined with the height of the mesh panel 5, perfectly matches the step distance of the disc buckle scaffold. The rectangular tube supports the mesh panel 5. The rectangular tube connector 4 is stronger than steel plate connectors and eliminates the need for additional outer horizontal bars 3 on the disc buckle scaffold, reducing the load on the scaffold and making the scaffold more resilient and safer. The rectangular tube connector 4 can also serve as a third connector 8, which includes a connecting seat 81, a snap-fit ​​piece 82, a strip-shaped opening 83, a limiting piece 84, a connecting piece 85, a U-shaped notch 86, a fixing bolt 87, and a washer 88. Connecting seats are provided at the lower ends of the outer surfaces of both the horizontal bar 3 and the disc buckle crossbar 2. The connector 381 is generally U-shaped. The snap-fit ​​pieces 382 are all located at the front end of the connector 381. Each snap-fit ​​piece 382 is installed in conjunction with the longitudinally adjacent mesh piece 5. Both the upper and lower ends of the snap-fit ​​piece 382 are bent backwards to form a slot with the connector 381, allowing the mesh piece 5 to be snapped into the slot. The strip-shaped openings 383 are all located inside the front center of the connector 381, with the upper strip-shaped opening 383 being longer than the lower one. The limiting pieces 384 are all inserted into the strip-shaped openings 383, with the front end of each limiting piece 384 fitting against the rear end of the mesh piece 5. The upper width of the limiting piece 384 is wider than the lower width. Together with the strip-shaped openings 383, this allows for quick positioning of mesh pieces 5 of different specifications. Connecting piece 385... All are rotatably connected to the upper rear side of the connecting seat 3 81. The lower front side of the connecting piece 3 85 is in contact with the upper middle part of the connecting seat 3 81. The lower middle part of the connecting piece 3 85 is in contact with the upper upper surface of the horizontal bar 3 and the disc buckle crossbar 2. The upper rear side of the connecting seat 3 81 and the lower middle part of the connecting piece 3 85 are both provided with mounting grooves 3. The inner wall of the mounting grooves 3 is in contact with the outer surface of the horizontal bar 3 and the disc buckle crossbar 2. U-shaped notches 3 86 are all provided on the upper front side of the connecting piece 3 85. Fixing bolts 3 87 are rotatably connected to the upper middle of the connecting seat 3 81. The outer surface of the fixing bolts 3 87 is fitted with the inner wall of the vertically adjacent U-shaped notches 3 86.All gaskets 88 are located at the upper rear center of the connecting seat 3 81. The upper ends of all gaskets 88 are in contact with the lower ends of the outer surfaces of the vertically adjacent horizontal bar 3 and the disc buckle crossbar 2. The outer surface of the fixing bolt 3 87 can be connected to the external nut 2 via external threads, thereby fixing the connecting piece 3 85. The third connecting piece 8 can be used to connect the disc buckle outer frame to the mesh 5. The added gaskets 88 can make the connection between the third connecting piece 8 and the horizontal bar 3 and the disc buckle crossbar 2 more stable. All gaskets 88 are located at the upper rear center of the connecting seat 3 81. The upper ends of all gaskets 88 are in contact with the lower ends of the outer surfaces of the vertically adjacent horizontal bar 3 and the disc buckle crossbar 2.

[0038] Specifically, when the third connector 8 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove 3 on the connector 3 81 is aligned with the lower end of the outer surface of the disc buckle crossbar 2. Then, the connector 3 85 is deflected so that the lower front side of the connector 3 85 is aligned with the upper middle part of the connector 3 81, and the mounting groove 3 at the lower end of the connector 3 81 is aligned with the upper end of the outer surface of the disc buckle crossbar 2. The shim 88 can make the connection more stable. Then, the fixing bolt 3 87 is rotated so that the middle part of the outer surface of the fixing bolt 3 87 is aligned with the U-shaped recess. The inner wall of the three-hole 86 is fitted together, and then the outer nut 2 is rotated so that the lower end of the outer nut 2 is tightly fitted to the upper end of the connecting piece 3 85, thereby fixing the connecting piece 3 85. Then the mesh 5 is clipped into the slot, and the limiting piece 3 84 is inserted into the inside of the strip-shaped three-hole 83. The upper end of the limiting piece 3 84 is tapped, and the front end of the limiting piece 3 84 is fitted with the rear end of the mesh 5. The beveled rear end of the limiting piece 3 84 is fitted with the inner wall of the strip-shaped three-hole 83, so that the limiting piece 3 84 is tightly inserted into the inside of the strip-shaped three-hole 83, thereby fixing the mesh 5. Example

[0039] The difference between this embodiment and Embodiment 1 is that:

[0040] In this embodiment, a disc-lock scaffolding mesh system compatible with climbing scaffold mesh panels includes disc-lock vertical rods 1; each horizontally adjacent disc-lock vertical rod 1 is provided with a disc-lock horizontal rod 2 and a horizontal bar 3, which are distributed vertically at intervals. The disc-lock vertical rods 1, disc-lock horizontal rods 2, and horizontal bars 3 form a disc-lock scaffolding. The outer surfaces of the horizontal bars 3 and disc-lock horizontal rods 2 are provided with rectangular tube connectors 4. The front side of the disc-lock scaffolding is provided with evenly distributed mesh panels 5. The front ends of the rectangular tube connectors 4 are fitted and installed with the rear ends of the mesh panels 5, and the front ends of the rectangular tube connectors 4 are snapped into the rear ends of the mesh panels 5. The disc-lock scaffolding and mesh panels 5 can be quickly connected through the rectangular tube connectors 4. The disc-lock scaffolding system can utilize the mesh panels 5 of old or idle climbing scaffolding. Simply install the mesh panel 5 vertically. Compared to using custom mesh panels with disc buckles, this significantly reduces costs. A rectangular tube connector 4 is also included. The height of the rectangular tube connector 4, combined with the height of the mesh panel 5, perfectly matches the step distance of the disc buckle scaffold. The rectangular tube supports the mesh panel 5. The rectangular tube connector 4 is stronger than steel plate connectors and eliminates the need for additional outer horizontal bars 3 on the disc buckle scaffold, reducing the load on the scaffold and increasing its resilience and safety. The rectangular tube connector 4 can also serve as a fourth connector 9, which includes a connecting seat 91, a snap-fit ​​piece 92, a strip opening 93, a limiting piece 94, a connecting piece 95, a U-shaped notch 96, and a fixing bolt 97. The lower ends of the outer surfaces of the horizontal bar 3 and the disc buckle crossbar 2 are equipped with connecting... The fourth seat 91 and the fourth snap-fit ​​piece 92 are both located at the front end of the fourth seat 91. The fourth snap-fit ​​piece 92 is installed in conjunction with the longitudinally adjacent mesh piece 5. Both the upper and lower ends of the fourth snap-fit ​​piece 92 are bent backward to form a slot with the fourth seat 91, and the mesh piece 5 can be snapped into the slot. The fourth strip opening 93 is located in the middle of the front side inside the fourth seat 91. The length of the upper strip opening 93 is greater than the length of the lower strip opening 93. The fourth limiting piece 94 is inserted into the inside of the fourth strip opening 93. The front end of the fourth limiting piece 94 is attached to the rear end of the mesh piece 5. The width of the upper end of the fourth limiting piece 94 is greater than the width of the lower end. Together with the fourth strip opening 93, it can quickly form a limiting effect for mesh pieces 5 of different specifications. The fourth connecting piece 95 is rotatably connected to the fourth seat. The upper rear side of the inner side of the connecting piece 491 and the lower front side of the connecting piece 495 are both in contact with the upper middle part of the upper side of the connecting seat 491. The lower middle part of the connecting piece 495 is in contact with the upper outer surface of the horizontal bar 3 and the disc buckle crossbar 2. The upper rear side of the inner side of the connecting seat 491 and the lower middle part of the connecting piece 495 are both provided with mounting grooves 4. The inner wall of the mounting grooves 4 is in contact with the outer surface of the horizontal bar 3 and the disc buckle crossbar 2. The U-shaped notches 496 are all opened on the upper front side of the connecting piece 495. The fixing bolts 497 are all rotatably connected to the middle of the upper inner side of the connecting seat 491. The outer surface of the fixing bolts 497 is in contact with the inner wall of the vertically adjacent U-shaped notches 496.The outer surface of the fixing bolt 4 97 can be connected to the external nut via external threads, thereby connecting the connecting piece 4 95. The fourth connecting piece 9 can be used to connect the disc buckle outer frame to the mesh 5. The mounting groove 4 is located inside the connecting seat 4 91 and between the lower end of the connecting piece 4 95. Mounting grooves 4 are provided on the upper rear side of the inner side of the connecting seat 4 91 and the middle of the lower end of the connecting piece 4 95. The inner walls of the mounting grooves 4 are in contact with the outer surfaces of the horizontal bar 3 and the disc buckle crossbar 2.

[0041] Specifically, when the fourth connector 9 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove 4 inside the connecting seat 4 91 is aligned with the lower end of the outer surface of the disc buckle crossbar 2. Then, the connecting piece 4 95 is deflected so that the lower front side of the connecting piece 4 95 is aligned with the upper middle part of the connecting seat 4 91. The mounting groove 4 at the lower end of the connecting seat 4 91 is aligned with the upper end of the outer surface of the disc buckle crossbar 2. The mounting groove 4 is located inside the connecting seat 4 91, which improves the connection strength between the fourth connector 9 and the disc buckle crossbar 2. Then, the fixing bolt 4 97 is rotated so that the fixing bolt 4 9 The outer surface of 7 is in contact with the inner wall of the U-shaped notch 4 96. Then, rotate the outer nut 3 so that the lower end of the outer nut 3 is in close contact with the upper end of the connecting piece 4 95, thereby fixing the connecting piece 4 95. Then, the mesh 5 is clipped into the slot. The limiting piece 4 94 is inserted into the inside of the strip opening 4 93. The upper end of the limiting piece 4 94 is tapped, and the front end of the limiting piece 4 94 is in contact with the rear end of the mesh 5. The beveled rear end of the limiting piece 4 94 is in contact with the inner wall of the strip opening 4 93, so that the limiting piece 4 94 is tightly inserted into the inside of the strip opening 4 93, thereby fixing the mesh 5.

[0042] The working principle of the disc-lock scaffolding mesh system compatible with climbing scaffolding mesh provided by this utility model is as follows: When using the disc-lock scaffolding mesh system compatible with climbing scaffolding mesh, the mesh panels 5 of the old and idle climbing scaffolding are vertically installed on the front side of the disc-lock scaffolding through rectangular tube connectors 4. The width of the mesh panel 5 is 1494mm and the height is 1940mm. The step height of the disc-lock scaffolding is 2000mm. The height of the mesh panel 5 can be matched with the step height of the disc-lock scaffolding. The disc-lock scaffolding system utilizes the mesh panels 5 of the old and idle climbing scaffolding, which can reduce costs significantly compared with custom-made disc-lock mesh panels. The rectangular tube connector 4 has a rectangular tube height of 60mm. The height of the rectangular tube connector 4 (60mm) plus the height of the mesh panel 5 (1940mm) equals 2000mm, which perfectly matches the 2000mm step height of the disc buckle outer frame. During installation, when the first connector 6 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove on the connecting seat 61 is aligned with the lower end of the outer surface of the disc buckle crossbar 2. Then, the connecting piece 65 is deflected so that the lower front side of the connecting piece 65 is aligned with the upper middle part of the connecting seat 61, and the mounting groove at the lower end of the connecting seat 61 is aligned with the upper end of the outer surface of the disc buckle crossbar 2. Finally, the fixing bolt 67 is rotated to fix the bolt. The outer surface of bolt 67 is aligned with the inner wall of U-shaped notch 66. Then, the fixing nut 68 is rotated until its lower end is pressed against the upper end of connecting piece 65, thus fixing connecting piece 65. Next, the mesh piece 5 is inserted into the slot. The limiting piece 64 is inserted into the slot 63. The upper end of the limiting piece 64 is tapped, causing its front end to align with the rear end of the mesh piece 5. The beveled rear end of the limiting piece 64 aligns with the inner wall of the slot 63, ensuring the limiting piece 64 is firmly inserted into the slot 63, thus fixing the mesh piece 5. The second connector 7 is then installed. When the horizontal bar 3 is on its outer surface, align the mounting groove 2 on the connecting seat 2 71 with the lower end of the outer surface of the horizontal bar 3. Then, deflect the connecting piece 2 75 so that the lower front side of the connecting piece 2 75 aligns with the upper middle part of the connecting seat 2 71, and the mounting groove 2 at the lower end of the connecting seat 2 71 aligns with the upper end of the outer surface of the horizontal bar 3. Then, insert the fixing bolt 2 77 so that the middle part of the outer surface of the fixing bolt 2 77 aligns with the inner wall of the U-shaped notch 2 76. Then, rotate the outer nut 1 so that the lower end of the outer nut 1 is tightly against the upper end of the connecting piece 2 75, thereby fixing the connecting piece 2 75. Finally, snap the mesh 5 into the slot. Inside, the second limiting piece 74 is inserted into the interior of the second slot 73. The upper end of the second limiting piece 74 is tapped, causing its front end to align with the rear end of the mesh 5. The beveled rear end of the second limiting piece 74 aligns with the inner wall of the second slot 73, ensuring the second limiting piece 74 is firmly inserted into the second slot 73, thus fixing the mesh 5. When the third connecting piece 8 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove 3 on the connecting seat 3 81 aligns with the lower end of the outer surface of the disc buckle crossbar 2. Then, the connecting piece 3 85 is deflected so that the lower front end of the connecting piece 3 85 aligns with the upper middle part of the connecting seat 3 81.The mounting groove at the lower end of the connecting seat 81 fits against the upper end of the outer surface of the disc buckle crossbar 2. The washer 88 can make the connection more stable. Then, rotate the fixing bolt 87 so that the middle of the outer surface of the fixing bolt 87 fits against the inner wall of the U-shaped notch 86. Then, rotate the outer nut 2 so that the lower end of the outer nut 2 fits tightly against the upper end of the connecting piece 85, thereby fixing the connecting piece 85. Then, the mesh 5 is clipped into the slot, and the limiting piece 84 is inserted into the strip opening 83. When the upper end of the limiting piece 84 is struck, the front end of the limiting piece 84 fits against the rear end of the mesh 5, and the beveled rear end of the limiting piece 84 fits against the inner wall of the strip opening 83, so that the limiting piece 84 is tightly inserted into the interior of the strip opening 83, thereby fixing the mesh 5. When the fourth connecting piece 9 is installed on the outer surface of the disc buckle crossbar 2, the mounting groove 4 in the connecting seat 4 91 fits against the lower end of the outer surface of the disc buckle crossbar 2, and then the connecting piece 4 95 is deflected so that the front side of the lower end of the connecting piece 4 95 fits against the upper end of the mesh 5. The upper middle part of the connecting seat 4 91 is fitted together, and the mounting groove 4 at the lower end of the connecting seat 4 91 is fitted together with the upper end of the outer surface of the disc buckle crossbar 2. Then, the fixing bolt 4 97 is rotated so that the middle part of the outer surface of the fixing bolt 4 97 is fitted together with the inner wall of the U-shaped notch 4 96. Then, the outer nut 3 is rotated so that the lower end of the outer nut 3 is tightly fitted with the upper end of the connecting piece 4 95, thereby fixing the connecting piece 4 95. Then, the mesh 5 is clipped into the slot, and the limiting piece 4 94 is inserted into the inside of the strip opening 4 93. The upper end of the limiting piece 4 94, the front end of the limiting piece 4 94, fits against the rear end of the mesh 5. The beveled rear end of the limiting piece 4 94 fits against the inner wall of the strip opening 4 93, allowing the limiting piece 4 94 to be tightly inserted into the interior of the strip opening 4 93, thereby fixing the mesh 5. The mesh 5 is lifted by the rectangular tube connector 4. The rectangular tube connector 4 is stronger than the steel plate connector, and at the same time, it eliminates the need for additional outer horizontal bars 3 of the disc-lock scaffold, reducing the load-bearing capacity of the scaffold and making the scaffold more resilient and safer.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disc-buckle external scaffolding mesh system compatible with climbing scaffolding mesh panels, characterized in that: Including the vertical bar of the disc buckle (1); Disc buckle vertical bar (1): Disc buckle horizontal bar (2) and horizontal bar (3) are provided between the horizontally adjacent disc buckle vertical bars (1). The disc buckle horizontal bar (2) and horizontal bar (3) are distributed vertically and vertically. The disc buckle vertical bar (1), disc buckle horizontal bar (2) and horizontal bar (3) form a disc buckle outer frame. The outer surfaces of the horizontal bar (3) and disc buckle horizontal bar (2) are provided with rectangular tube connectors (4). The front side of the disc buckle outer frame is provided with evenly distributed mesh (5). The front end of the rectangular tube connector (4) is installed in conjunction with the rear end of the mesh (5).

2. The disc-buckle external scaffolding mesh system compatible with climbing scaffolding mesh according to claim 1, characterized in that: The rectangular tube connector (4) can be a first connector (6), which includes a connecting seat (61), a snap-fit ​​piece (62), a strip opening (63), a limiting piece (64), a connecting piece (65), a U-shaped notch (66), a fixing bolt (67), and a fixing nut (68). The lower end of the outer surface of the horizontal bar (3) and the disc buckle crossbar (2) are provided with a connecting seat (61). The snap-fit ​​piece (62) is provided at the front end of the connecting seat (61). The snap-fit ​​piece (62) is installed in conjunction with the longitudinally adjacent mesh (5). The strip opening (63) is provided in the middle of the front side inside the connecting seat (61). The limiting piece (64) is inserted into the inside of the strip opening (63). The front end of the limiting piece (64) is connected to the mesh (5). 5) The rear end of the connecting piece 1 (65) is rotatably connected to the upper rear side of the connecting seat 1 (61). The lower front side of the connecting piece 1 (65) is attached to the upper middle part of the connecting seat 1 (61). The lower middle part of the connecting piece 1 (65) is attached to the upper upper surface of the horizontal bar (3) and the disc buckle cross bar (2). The U-shaped notch 1 (66) is opened on the upper front side of the connecting piece 1 (65). The fixing bolt 1 (67) is rotatably connected to the upper middle part of the connecting seat 1 (61). The outer surface of the fixing bolt 1 (67) is fitted with the inner wall of the vertically adjacent U-shaped notch 1 (66). The fixing nut (68) is threaded to the outer surface of the fixing bolt 1 (67). The lower end of the fixing nut (68) is attached to the upper front side of the vertically adjacent connecting piece 1 (65).

3. The disc-buckle external scaffolding mesh system compatible with climbing scaffolding mesh according to claim 1, characterized in that: The rectangular tube connector (4) can also be a second connector (7). The second connector (7) includes a second connector seat (71), a second snap-fit ​​piece (72), a second strip opening (73), a second limiting piece (74), a second connecting piece (75), a second U-shaped notch (76), and a second fixing bolt (77). The lower end of the outer surface of the horizontal bar (3) and the disc buckle crossbar (2) are both provided with a second connector seat (71). The second snap-fit ​​piece (72) is provided at the front end of the second connector seat (71). The second snap-fit ​​piece (72) is installed in conjunction with the longitudinally adjacent mesh piece (5). The second strip opening (73) is opened in the middle front side of the inside of the second connector seat (71). The second limiting piece (74) is inserted into the... Inside the second strip opening (73), the front end of the second limiting piece (74) is attached to the rear end of the mesh (5), the second connecting piece (75) is set on the upper rear side of the second connecting seat (71), the lower front side of the second connecting piece (75) is attached to the upper middle part of the second connecting seat (71), the lower middle part of the second connecting piece (75) is attached to the upper upper surface of the horizontal bar (3) and the disc buckle cross bar (2), the second U-shaped recess (76) is opened on the upper front side of the second connecting piece (75), the second fixing bolt (77) is inserted into the middle of the upper part of the second connecting seat (71), and the outer surface of the second fixing bolt (77) is fitted with the inner wall of the vertically adjacent second U-shaped recess (76).

4. The disc-buckle external scaffolding mesh system compatible with climbing scaffolding mesh according to claim 1, characterized in that: The rectangular tube connector (4) can also be a third connector (8). The third connector (8) includes a connecting seat three (81), a snap-fit ​​piece three (82), a strip opening three (83), a limiting piece three (84), a connecting piece three (85), a U-shaped notch three (86), a fixing bolt three (87), and a washer (88). The lower end of the outer surface of the horizontal bar (3) and the disc buckle crossbar (2) are both provided with a connecting seat three (81). The snap-fit ​​piece three (82) is provided at the front end of the connecting seat three (81). The snap-fit ​​piece three (82) is installed in conjunction with the longitudinally adjacent mesh piece (5). The strip opening three (83) is opened in the middle front side of the inside of the connecting seat three (81). The limiting piece three (84) is inserted into the inside of the strip opening three (83). The front end of the limiting piece three (84) is attached to the rear end of the mesh piece (5). The connecting piece three (85) is rotatably connected to the upper rear side of the connecting seat three (81). The lower front side of the connecting piece three (85) is attached to the upper middle part of the connecting seat three (81). The lower middle part of the connecting piece three (85) is attached to the upper surface of the horizontal bar (3) and the disc buckle cross bar (2). The U-shaped notch three (86) is opened on the upper front side of the connecting piece three (85). The fixing bolt three (87) is rotatably connected to the upper middle of the connecting seat three (81). The outer surface of the fixing bolt three (87) is fitted with the inner wall of the vertically adjacent U-shaped notch three (86). The gasket (88) is set in the middle of the upper rear side of the connecting seat three (81).

5. The disc-buckle external scaffolding mesh system compatible with climbing scaffolding mesh according to claim 1, characterized in that: The rectangular tube connector (4) can also be a fourth connector (9). The fourth connector (9) includes a fourth connector seat (91), a fourth snap-fit ​​piece (92), a fourth strip opening (93), a fourth limiting piece (94), a fourth connecting piece (95), a fourth U-shaped notch (96), and a fourth fixing bolt (97). The lower end of the outer surface of the horizontal bar (3) and the disc buckle crossbar (2) are provided with a fourth connector seat (91). The fourth snap-fit ​​piece (92) is provided at the front end of the fourth connector seat (91). The fourth snap-fit ​​piece (92) is installed in conjunction with the longitudinally adjacent mesh piece (5). The fourth strip opening (93) is provided in the middle of the front side inside the fourth connector seat (91). The fourth limiting piece (94) is inserted into the fourth strip opening. Inside (93), the front end of the limiting piece four (94) is attached to the rear end of the mesh piece (5), the connecting piece four (95) is rotatably connected to the upper rear side of the connecting seat four (91), the lower front side of the connecting piece four (95) is attached to the middle upper part of the connecting seat four (91), the lower middle part of the connecting piece four (95) is attached to the upper outer surface of the horizontal bar (3) and the disc buckle cross bar (2), the U-shaped notch four (96) is opened on the upper front side of the connecting piece four (95), the fixing bolt four (97) is rotatably connected to the middle of the upper inner part of the connecting seat four (91), and the outer surface of the fixing bolt four (97) is fitted with the inner wall of the vertically adjacent U-shaped notch four (96).

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