Device and method for adjusting position of net rack support

Abstract

The invention discloses a device and method for adjusting the position of a net rack support, the device comprises the net rack support, a hanging belt and a chain block, the net rack support is of a steel structure, the net rack support comprises a fixing plate, a connecting column, a connecting plate and an inserting plate, the connecting column is welded to the top face of the fixing plate, the connecting plate is welded between the fixing plate and the connecting column, and the inserting plate is connected with the connecting column. And the insertion plate is welded on the bottom surface of the fixed plate. The hanging belt is fixed to a rod piece of the net rack, and the chain block is connected with the hanging belt and the connecting plate. The position of the net rack support is adjusted through lifting or descending of the chain block, so that the connecting column and the connecting plate are attached and welded to the ball joint of the net rack.

Description

Technical Field

[0001] The invention belongs to the technical field of grid construction, and in particular relates to a device and method for adjusting the position of a grid support. Background Art

[0002] With the national "dual carbon" strategic goal, my country has begun to accelerate the construction of a "new power system with new energy as the main body", and the new energy photovoltaic industry has achieved a new round of rapid development. However, with the tightening of national land policies, the land that can be developed for photovoltaics has gradually shifted from flat land with convenient transportation and construction to mountainous areas with complex terrain, and has also gradually expanded to coastal areas and offshore waters.

[0003] The existing offshore photovoltaic roof is a grid roof, which includes steel structure rods and ball nodes. The grid supports are welded at the ball nodes of the grid and then inserted into the offshore pipe piles to connect the grid and the offshore pile foundation structure.

[0004] During the actual assembly process, the accuracy of the truss support position is required to be high. Once a deviation occurs, the truss roof will be unable to be installed on the offshore pile foundation structure. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a device and method for adjusting the position of a truss support, by which the position of the truss support is adjusted by lifting or lowering a hand winch, thereby improving the accuracy of the welding position of the truss support, so that the truss support can be inserted into the offshore pipe pile, thereby ensuring that the truss roof is installed on the offshore pile foundation structure.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A device for adjusting the position of a grid support includes a grid support, the grid support is a steel structure, the grid support includes a fixing plate, a connecting column, a connecting plate and an inserting plate, the connecting column is welded on the top surface of the fixing plate, the connecting plate is welded between the fixing plate and the connecting column, and the inserting plate is welded on the bottom surface of the fixing plate. It is characterized by further including a sling and a hand chain hoist, the sling is fixed on the rod of the grid, and the hand chain hoist connects the sling and the connecting plate.

[0008] The position of the grid support is adjusted by lifting or lowering the hand hoist so that the connecting column and the connecting plate are fitted and welded at the ball node of the grid.

[0009] Furthermore, when the grid support and the ball node are welded, the sling will slide on the rod, and the adjusted grid support still has position deviation. Therefore, the present invention adds a limit device for the steel structure, which includes a mounting seat and a limit plate. The mounting seat is fixed on the ground, and the limit plate is fixed on the mounting seat. The limit plate is provided with a limit piece, and the limit piece is fixed to the insertion plate. After adjusting the position of the grid support by a hand winch, the grid support is limited to the limit device by a limit piece, and the grid support will not deviate from the designed position, thereby improving the welding accuracy of the grid support and the ball node.

[0010] Furthermore, the limiter adopts a fixing bolt, which is threadedly connected to the limit plate, and a single insert plate is arranged between the two limit plates, and two symmetrical fixing bolts are used to clamp the insert plate. The fixing bolt has a small cross-section to ensure the reliability of the connection between the fixing bolt and the insert plate.

[0011] Furthermore, the mounting seat includes a mounting plate, a telescopic bracket and a bottom plate, the telescopic bracket is arranged between the mounting plate and the bottom plate, the bottom plate is fixed on the ground, the limit plate is fixed on the mounting plate, and the telescopic bracket can adjust the height to adjust the distance between the mounting plate and the bottom plate. When the distance between the mounting plate and the bottom plate is not adjusted, there is a certain distance between the mounting plate and the ball node, and the grid support can be raised by a hand chain hoist; by adjusting the distance between the mounting plate and the bottom plate, the height of the limit plate is changed, so that the limit member is fixed to the insertion plate.

[0012] Furthermore, a vertical threaded rod 1 is fixed to the mounting plate, the limiting plate is provided with a through hole, the threaded rod 1 passes through the through hole, and the threaded rod 1 is threadedly connected with a nut 1, so as to facilitate the installation or removal of the limiting plate on the mounting plate.

[0013] Furthermore, the telescopic bracket includes component one and component two, component one is welded and fixed to the mounting plate, component two is welded and fixed to the base plate, component one is provided with a connecting shaft, component two is provided with a mounting hole and a slot, the mounting hole and the slot are connected, component one extends into the mounting hole and moves vertically in the mounting hole, the connecting shaft passes through the slot and moves vertically in the slot, and the connecting shaft is threadedly connected with nut two to realize the height adjustment of the telescopic bracket.

[0014] Furthermore, the mounting plate is provided with a limiting hole, and a vertical threaded rod 2 is fixed to the mounting plate. When the insertion plate is inserted into and limited in the limiting hole, the threaded rod 2 is provided with an auxiliary steel plate, and the threaded rod 2 is threadedly connected with a nut 3, which locks the auxiliary steel plate. The auxiliary steel plate limits the insertion plate, which facilitates the hand winch to connect to the grid support.

[0015] Furthermore, a U-shaped plate is welded to the bottom surface of the mounting plate, and the U-shaped plate is threadedly connected with a limiting bolt. When the limiting piece is fixed to the insert plate, the limiting bolt passes through the limiting hole and is supported at the bottom surface of the insert plate, thereby preventing the grid support from descending and causing the grid support and the ball node to not contact, thereby ensuring that the grid support is attached and welded at the ball node of the grid, thereby improving the welding quality.

[0016] A method for adjusting the position of a grid support, characterized in that it comprises the following steps:

[0017] S1. Make the grid support in the factory according to the design drawings.

[0018] S2. Install the mounting base:

[0019] (1) Pour a concrete foundation on the ground and embed the installation bolts in the concrete foundation.

[0020] (2) According to the position of the ball node of the grid, determine the position of the mounting base on the concrete foundation, then install the base plate of the mounting base on the mounting bolts, then screw the mounting nuts into the mounting bolts, and lock the mounting nuts on the base plate.

[0021] S3. Temporarily place the grid support on the mounting base:

[0022] (1) Insert the insert plate of the grid support into the limiting hole of the mounting plate and then install the auxiliary steel plate on the threaded rod 2. Then screw the nut 3 into the threaded rod 2 to lock the auxiliary steel plate. At this time, the auxiliary steel plate limits the insert plate.

[0023] (2) Weld the ear plates onto the connecting plates of the grid supports.

[0024] S4. Fit the grid support to the ball node of the grid:

[0025] (1) Fix the lifting strap on the rod of the grid, then fix the lifting strap and the hand chain hoist, and then fix the hand chain hoist and the ear plate.

[0026] (2) Remove the auxiliary steel plate, and then adjust the position of the grid support by lifting or lowering it with a hand winch. The insertion plate of the grid support is disengaged from the limiting hole of the mounting plate, and the connecting column and connecting plate of the grid support are fitted to the ball node of the grid.

[0027] S5. Install the limit plate: install the limit plate on the threaded rod on the mounting plate, and then screw nut one on the threaded rod one to lock the limit plate.

[0028] S6, fixed insert plate:

[0029] (1) Adjust the height of the telescopic bracket and change the distance between the mounting plate and the base plate so that the limit plate is at the set height.

[0030] (2) Screw the fixing bolts into the limit plate and use two symmetrical fixing bolts to clamp the single insert plate.

[0031] (3) Screw the limiting bolt into the U-shaped plate. The limiting bolt passes through the limiting hole and is supported on the bottom surface of the insert plate.

[0032] S7. Weld the connecting columns and connecting plates at the ball nodes of the grid.

[0033] S8. Remove the hand chain hoist and sling, cut the ear plate from the connecting plate, remove the fixing bolts and limit bolts, remove the limit plate, and then remove the entire mounting base.

[0034] S9. Grind the cut parts of the connecting plate and then paint them.

[0035] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0036] (1) The present invention adjusts the position of the grid support by lifting or lowering a hand winch, thereby improving the accuracy of the welding position of the grid support, so that the grid support can be inserted into the offshore pipe pile, ensuring that the grid roof is installed on the offshore pile foundation structure.

[0037] (2) When the grid support and the ball node are welded, the sling will slide on the rod, and the adjusted grid support still has position deviation. Therefore, the present invention adds a limit device of the steel structure, which includes a mounting seat and a limit plate. The mounting seat is fixed on the ground, and the limit plate is fixed on the mounting seat. The limit plate is provided with a limit piece, and the limit piece is fixed to the insertion plate. After adjusting the position of the grid support by a hand winch, the grid support is limited to the limit device by the limit piece, and the grid support will not deviate from the designed position, thereby improving the welding accuracy of the grid support and the ball node. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below in conjunction with the accompanying drawings:

[0039] Figure 1 It is a structural schematic diagram of the grid support in the present invention;

[0040] Figure 2 for Figure 1 Bottom view of

[0041] Figure 3 It is a schematic diagram of the structure of the present invention when the mounting base is installed;

[0042] Figure 4 It is a schematic diagram of the structure in which the second component and the bottom plate are welded and fixed in the present invention;

[0043] Figure 5It is a schematic diagram of the structure in which the component 1 and the mounting plate are welded and fixed in the present invention;

[0044] Figure 6 It is a structural schematic diagram of the present invention when the grid support is temporarily placed on the mounting base;

[0045] Figure 7 It is a structural schematic diagram of the connection between the threaded rod 2 and the auxiliary steel plate in the present invention;

[0046] Figure 8 It is a structural schematic diagram of the present invention in which the grid support is attached to the ball node of the grid;

[0047] Fig. 9 It is a structural schematic diagram of the present invention when the limiting plate is installed;

[0048] Fig.10 It is a schematic diagram of the structure of the connection between the limit plate and the threaded rod in the present invention;

[0049] Fig.11 It is a structural schematic diagram of the limiting plate in the present invention;

[0050] Fig.12 It is a schematic diagram of the structure of the present invention when the height of the telescopic bracket is adjusted;

[0051] Fig.13 It is a schematic diagram of the structure of the present invention when the insertion plate is fixed;

[0052] Fig.14 It is a schematic diagram of the structure of screwing in the fixing bolts and the limiting bolts in the present invention;

[0053] Fig.15 It is a schematic structural diagram of the connection between the grid support and the ball node of the grid in the present invention.

[0054] In the figure, 1-fixed plate; 2-connecting column; 3-connecting plate; 4-insertion plate; 5-ball node; 6-rod; 7-mounting seat; 8-bottom plate; 9-component two; 10-mounting hole; 11-slot; 12-mounting plate; 13-threaded rod one; 14-threaded rod two; 15-limiting hole; 16-component one; 17-connecting shaft; 18-auxiliary steel plate; 19-ear plate; 20-hand hoist; 21-sling; 22-limiting plate; 23-nut three; 24-nut two; 25-mounting bolt; 26-mounting nut; 27-nut one; 28-through hole; 29-threaded hole; 30-fixing bolt; 31-U-shaped plate; 32-limiting bolt. DETAILED DESCRIPTION

[0055] like Figures 1 to 15As shown, a grid support position adjustment device of the present invention is used for the grid of an offshore photovoltaic roof. The grid includes a rod 6 and a ball node 5 of a steel structure. The rod 6 and the ball node 5 are welded and fixed.

[0056] A device for adjusting the position of a grid support includes a grid support (such as Figure 1 and Figure 2 As shown), sling 21 and hand winch 20.

[0057] The grid support is a steel structure, and the grid support includes a fixed plate 1, a connecting column 2, a connecting plate 3 and an insert plate 4. The connecting column 2 is welded on the top surface of the fixed plate 1, eight connecting plates 3 are welded between the fixed plate 1 and the connecting column 2, and the insert plate 4 is welded on the bottom surface of the fixed plate 1. A cross is formed between the insert plates 4. The grid support is manufactured in the factory to ensure the manufacturing quality of the grid support.

[0058] Two slings 21 are fixed to the rod 6 of the grid by binding, and each sling 21 is provided with a hand chain hoist 20. The hand chain hoist 20 is a prior art, and the specific structure of the hand chain hoist 20 is not described in the present invention. One of the hooks of the hand chain hoist 20 is connected to the sling 21, and the other hook of the hand chain hoist 20 is connected to the ear plate 19 welded on the connecting plate 3. The position of the grid support is adjusted by lifting or lowering the hand chain hoist 20, so that the connecting column 2 and the connecting plate 3 are attached and welded at the ball node 5 of the grid.

[0059] When the grid support and the ball node 5 are welded, the sling 21 will slide on the rod 6, and the grid support after adjustment still has position deviation. Therefore, the present invention adds a limit device of the steel structure, and the limit device includes a mounting seat 7 and a limit plate 22. The mounting seat 7 includes a mounting plate 12, a telescopic bracket and a base plate 8, and the telescopic bracket is arranged between the mounting plate 12 and the base plate 8. A concrete foundation is provided on the ground, and the base plate 8 is fixed on the concrete foundation. The mounting plate 12 is fixed with a vertical threaded rod 13, and the limit plate 22 is provided with a through hole 28, and the threaded rod 13 passes through the through hole 28. The threaded rod 13 is threadedly connected with a nut 27, so as to facilitate the installation or removal of the limit plate 22 on the mounting plate 12. The telescopic bracket can adjust the height and is used to adjust the distance between the mounting plate 12 and the base plate 8. When the distance between the mounting plate 12 and the base plate 8 is not adjusted, there is a certain distance between the mounting plate 12 and the ball node 5, and the grid support can be raised by the hand winch 20; by adjusting the distance between the mounting plate 12 and the base plate 8, the height of the limit plate 22 is changed, so that the limit member is fixed to the insertion plate 4.

[0060] The telescopic bracket includes component one 16 and component two 9. Component one 16 and mounting plate 12 are welded and fixed, component two 9 and base plate 8 are welded and fixed, component one 16 is provided with connecting shaft 17, component two 9 is provided with mounting hole 10 and slot 11, mounting hole 10 and slot 11 are connected, component one 16 extends into mounting hole 10 and moves vertically in mounting hole 10, connecting shaft 17 passes through slot 11 and moves vertically in slot 11, connecting shaft 17 is threadedly connected with nut two 24 to realize height adjustment of the telescopic bracket.

[0061] The limiting plate 22 is provided with a limiting member, and the limiting member adopts a fixing bolt 30, and the fixing bolt 30 is threadedly connected in the threaded hole 29 of the limiting plate 22. The single insert plate 4 is arranged between the two limiting plates 22, and two symmetrical fixing bolts 30 are used to clamp the insert plate 4. The installation heights of the two fixing bolts 30 on the same limiting plate 22 are different. The cross-section of the fixing bolt 30 is small, which ensures the reliability of the connection between the fixing bolt 30 and the insert plate 4, and the fixing bolt 30 is low in cost. After adjusting the position of the grid support by the hand chain hoist 20, the grid support is limited to the limiting device by the fixing bolt 30, and the grid support will not deviate from the designed position, thereby improving the welding accuracy of the grid support and the ball node 5.

[0062] The present invention requires connecting the hand chain hoist 20 with the grid support. If the grid support is placed on the ground, when the hand chain hoist 20 lifts the grid support, the grid support contacts the ground and causes wear of the grid support structure. Therefore, when the hand chain hoist 20 is not installed, the present invention temporarily fixes the grid support so that the grid support is at a set height from the ground. The specific design is as follows: the mounting plate 12 is provided with a limiting hole 15, and the mounting plate 12 is fixed with a vertical threaded rod 2 14. When the insert plate 4 is inserted and limited in the limiting hole 15, the threaded rod 2 14 is provided with an auxiliary steel plate 18, and the threaded rod 2 14 is threadedly connected with a nut 3 23, and the nut 3 23 locks the auxiliary steel plate 18. The auxiliary steel plate 18 limits the insert plate 4, which facilitates the hand chain hoist 20 to connect the grid support.

[0063] A U-shaped plate 31 is welded to the bottom surface of the mounting plate 12, and the U-shaped plate 31 is threadedly connected to the limiting bolt 32. When the fixing bolt 30 fixes the insert plate 4, the limiting bolt 32 passes through the limiting hole 15 and is supported at the bottom surface of the insert plate 4, preventing the grid support from descending, which causes the grid support and the ball node 5 to not contact each other, ensuring that the grid support is attached and welded to the ball node 5 of the grid, thereby improving the welding quality.

[0064] A method for adjusting the position of a grid support, comprising the following steps:

[0065] S1. Make the grid support in the factory according to the design drawings.

[0066] S2. Install the mounting seat 7:

[0067] (1) A concrete foundation is poured on the ground, and mounting bolts 25 are pre-buried in the concrete foundation.

[0068] (2) According to the position of the ball node 5 of the grid, determine the position of the mounting seat 7 on the concrete foundation, then install the base plate 8 of the mounting seat 7 onto the mounting bolts 25, then screw the mounting nuts 26 onto the mounting bolts 25, and lock the mounting nuts 26 onto the base plate 8.

[0069] S3, temporarily placing the grid support on the mounting base 7:

[0070] (1) Insert the insert plate 4 of the grid support and limit it in the limiting hole 15 of the mounting plate 12, then install the auxiliary steel plate 18 on the threaded rod 14, and then screw the nut 3 23 into the threaded rod 14. The nut 3 23 locks the auxiliary steel plate 18. At this time, the auxiliary steel plate 18 limits the insert plate 4.

[0071] (2) Weld the ear plate 19 onto the connecting plate 3 of the grid support.

[0072] S4. Fit the grid support to the ball node 5 of the grid:

[0073] (1) The lifting belt 21 is fixed to the rod 6 of the grid, and then the lifting belt 21 and the hand chain hoist 20 are fixed, and then the hand chain hoist 20 and the ear plate 19 are fixed.

[0074] (2) Remove the auxiliary steel plate 18, and then adjust the position of the grid support by lifting or lowering the hand winch 20. The insertion plate 4 of the grid support is disengaged from the limiting hole 15 of the mounting plate 12, and the connecting column 2 and the connecting plate 3 of the grid support are attached to the ball node 5 of the grid. At this time, the force of the grid support acts on the grid, which facilitates the precise adjustment of the installation position of the grid support.

[0075] S5. Install the limit plate 22: install the limit plate 22 at the threaded rod 13 on the mounting plate 12, and then screw a nut 27 into the threaded rod 13 to lock the limit plate 22.

[0076] S6, fixed insert plate 4:

[0077] (1) Adjust the height of the telescopic bracket and change the distance between the mounting plate 12 and the bottom plate 8 so that the limit plate 22 is at a set height.

[0078] (2) The fixing bolts 30 are screwed into the limiting plate 22 , and two symmetrical fixing bolts 30 are used to clamp the single insert plate 4 .

[0079] (3) The limiting bolt 32 is screwed into the U-shaped plate 31 . The limiting bolt 32 passes through the limiting hole 15 and is supported on the bottom surface of the insert plate 4 .

[0080] S7, welding the connection column 2 and the connection plate 3 to the ball node 5 of the grid.

[0081] S8, remove the hand chain hoist 20 and the sling 21, then cut the ear plate 19 from the connecting plate 3, then remove the fixing bolts 30 and the limiting bolts 32, then remove the limiting plate 22, and then remove the entire mounting base 7.

[0082] S9. Grind the cut portion of the connecting plate 3 and then apply paint.

[0083] In the present invention, the grid support is vertically welded at the ball node, and the concrete foundation is a horizontal plane; the grid support can also be tilted and welded at the ball node, and the concrete foundation is an inclined plane, and the inclination angle is consistent with the inclination angle maintained by the grid support, so that the limit device and the grid support are set correspondingly.

[0084] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A device for adjusting the position of a grid support, comprising: A grid support, the grid support is a steel structure, the grid support comprises a fixing plate, a connecting column, a connecting plate and an inserting plate, the connecting column is welded on the top surface of the fixing plate, the connecting plate is welded between the fixing plate and the connecting column, and the inserting plate is welded on the bottom surface of the fixing plate; It is characterized by further comprising: A sling fixed to the rod of the grid; A hand chain hoist, the hand chain hoist connects the sling and the connecting plate; The position of the grid support is adjusted by lifting or lowering the hand chain hoist, so that the connecting column and the connecting plate are attached and welded at the ball node of the grid.

2. The device for adjusting the position of a grid support according to claim 1, characterized in that: It also includes a steel structure limiting device, which includes a mounting seat and a limiting plate. The mounting seat is fixed on the ground, and the limiting plate is fixed on the mounting seat. The limiting plate is provided with a limiting piece, and the limiting piece fixes the insertion plate.

3. The device for adjusting the position of a grid support according to claim 2, characterized in that: The limiting member adopts a fixing bolt, and the fixing bolt is threadedly connected to the limiting plate. The single insert plate is arranged between the two limiting plates, and the insert plate is clamped by two symmetrical fixing bolts.

4. The device for adjusting the position of a grid support according to claim 3, characterized in that: The mounting base includes a mounting plate, a telescopic bracket and a base plate, the telescopic bracket is arranged between the mounting plate and the base plate, the base plate is fixed on the ground, the limit plate is fixed on the mounting plate, and the telescopic bracket can adjust the height and is used to adjust the distance between the mounting plate and the base plate.

5. The device for adjusting the position of a grid support according to claim 4, characterized in that: A vertical threaded rod 1 is fixed to the mounting plate, and the limiting plate is provided with a through hole, through which the threaded rod 1 passes, and the threaded rod 1 is threadedly connected with a nut 1.

6. The device for adjusting the position of a grid support according to claim 4, characterized in that: The telescopic bracket includes component one and component two, wherein component one is welded and fixed to the mounting plate, and component two is welded and fixed to the base plate, component one is provided with a connecting shaft, and component two is provided with a mounting hole and a notch, the mounting hole and the notch are communicated, component one extends into the mounting hole and moves vertically in the mounting hole, the connecting shaft passes through the notch and moves vertically in the notch, and the connecting shaft is threadedly connected with nut two.

7. The device for adjusting the position of a grid support according to claim 4, characterized in that: The mounting plate is provided with a limiting hole, and a vertical threaded rod 2 is fixed to the mounting plate. When the insertion plate is inserted into and limited in the limiting hole, the threaded rod 2 is provided with an auxiliary steel plate, and the threaded rod 2 is threadedly connected with a nut 3, and the nut 3 locks the auxiliary steel plate, and the auxiliary steel plate limits the insertion plate.

8. The device for adjusting the position of a grid support according to claim 7, characterized in that: A U-shaped plate is welded to the bottom surface of the mounting plate, and the U-shaped plate is threadedly connected to a limiting bolt. When the limiting member fixes the insert plate, the limiting bolt passes through the limiting hole and is supported on the bottom surface of the insert plate.

9. A method for adjusting the position of a grid support according to claim 8, characterized in that: The steps include: S1. Make the grid support in the factory according to the design drawings; S2. Install the mounting base: (1) Pour a concrete foundation on the ground and embed the installation bolts in the concrete foundation; (2) According to the position of the ball node of the grid, determine the position of the mounting seat on the concrete foundation, then install the base plate of the mounting seat on the mounting bolts, then screw the mounting nuts on the mounting bolts, and lock the mounting nuts on the base plate; S3. Temporarily place the grid support on the mounting base: (1) Insert the insertion plate of the grid support into the limiting hole of the mounting plate and then install the auxiliary steel plate on the threaded rod 2. Then screw the nut 3 into the threaded rod 2 to lock the auxiliary steel plate. At this time, the auxiliary steel plate limits the insertion plate; (2) Welding ear plates on the connecting plates of the grid support; S4. Fit the grid support to the ball node of the grid: (1) Fix the lifting belt on the rod of the grid, then fix the lifting belt and the hand chain hoist, and then fix the hand chain hoist and the ear plate; (2) Remove the auxiliary steel plate, and then adjust the position of the grid support by lifting or lowering the hand chain hoist. The insertion plate of the grid support is separated from the limiting hole of the mounting plate, and the connecting column and the connecting plate of the grid support are attached to the ball node of the grid; S5. Install the limit plate: install the limit plate on the threaded rod on the installation plate, and then screw nut 1 on the threaded rod 1 to lock the limit plate. S6, fixed insert plate: (1) Adjust the height of the telescopic bracket and change the distance between the mounting plate and the base plate so that the limit plate is at the set height; (2) Screw the fixing bolts into the limit plate and use two symmetrical fixing bolts to clamp the single insert plate; (3) Screw a limiting bolt into the U-shaped plate, the limiting bolt passes through the limiting hole, and is supported on the bottom surface of the insert plate; S7, welding the connecting column and the connecting plate to the ball node of the grid; S8. Remove the hand chain hoist and sling, cut the ear plate off the connecting plate, remove the fixing bolts and limit bolts, remove the limit plate, and then remove the entire mounting base; S9. Grind the cut parts of the connecting plate and then paint them.

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