A high-altitude steel net rack reconstruction maintenance operation platform

Abstract

The application belongs to the technical field of aerial work platforms, and particularly discloses a high-altitude steel net rack reconstruction and maintenance work platform, which comprises a net rack, a plurality of metal chord bars being spliced to form the net rack, a plurality of footboards, a plurality of the footboards being evenly laid on the net rack, two fixing lugs, the two fixing lugs being fixedly connected to the same side of the footboard, and two movable lugs. The jacking device is arranged, stable support is provided on the net rack by the supporting assembly when the footboard is laid, the footboard is jacked upward by the jacking assembly, the work personnel do not need to manually lift the whole footboard, the crane equipment is not needed to be used or the number of personnel is not needed to be increased, the laying difficulty of the footboard is greatly reduced, the laying time is reduced, and the laying efficiency of the footboard is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of aerial work platforms, and particularly relates to an aerial work platform suitable for the modification and maintenance of aerial steel space frames. Background Technology

[0002] Aerial work platforms are mobile, specialized equipment / devices that can safely transport workers and tools to designated locations at high altitudes. Their core function is to replace traditional scaffolding, ladders, and other simple tools, solving the accessibility, safety, and efficiency issues of high-altitude (usually 2 meters and above) operations. They are widely used in construction, equipment installation and maintenance, venue renovation, municipal engineering, and other scenarios.

[0003] Existing aerial work platforms mainly consist of scaffold boards and space frames. However, during the scaffold board laying process, when the laying position is not ideal, it is impossible for people to lift the scaffold board from the middle. They can only try to place one end of the scaffold board directly from one side of the space frame to the other. Because the scaffold boards are long and heavy (generally no less than 2 meters in length and weighing between 10 kg and 30 kg), it is difficult for people to lift the entire scaffold board from one side. In this case, in order to complete the scaffold board laying operation, it is often necessary to use crane equipment or increase manpower, which greatly increases the difficulty of laying scaffold boards and reduces the efficiency of scaffold board laying.

[0004] Therefore, it is necessary to invent a working platform suitable for the renovation and maintenance of high-altitude steel space frames to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a working platform suitable for the renovation and maintenance of high-altitude steel space frames, thereby solving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a working platform suitable for the renovation and maintenance of high-altitude steel space frames, comprising: A space frame, which is composed of multiple metal chords spliced ​​together; Scaffold boards, wherein there are multiple scaffold boards, and the multiple scaffold boards are evenly laid on the space frame; The fixed hanging ears are two in number, and both fixed hanging ears are fixedly connected to the same side of the scaffold board; The movable hanging ears are provided in two form. Both movable hanging ears are movably connected to the side of the scaffold board opposite to the fixed hanging ears, and are used to cooperate with the fixed hanging ears to hang the scaffold board on the grid frame. The lifting device includes a connecting shaft, a rotating ring, a lifting assembly, and a support assembly. The connecting shaft is fixedly connected between two movable lugs near the ends of the fixed lugs. There are two rotating rings, which are rotatably sleeved on the connecting shaft. The lifting assembly is fixedly connected to the rotating rings and is used to lift the scaffold planks upward. The support assembly is connected to the rotating rings and is used to support the scaffold planks by placing them on the space frame.

[0007] The scaffold board is made of two identical metal mesh panels spliced ​​together. The top surfaces of the two metal mesh panels are flush, and the two sides of the two metal mesh panels are fixed together by two fixing plates. The metal mesh panels are made of high-strength metal materials, which not only ensures the load-bearing strength of the scaffold board, but also has good breathability and anti-slip performance, which can effectively prevent workers from slipping during operation. The bottom edges of the front and rear sides of the metal mesh panels protrude downward to form reinforcing ribs. The reinforcing ribs are integrally formed with the metal mesh panels, which can effectively enhance the overall rigidity of the scaffold board and prevent the scaffold board from bending and deforming due to force during use. The two adjacent reinforcing ribs are both provided with identical strip-shaped limiting holes in the horizontal direction. The connecting shaft is inserted between the two limiting holes, and the diameter of the connecting shaft is smaller than the opening height of the limiting hole. The length of the movable lugs matches the length of the scaffold board, and the two movable lugs are slidably installed at the bottom of the front and rear sides of the scaffold board in the horizontal direction. Several protruding strips are evenly fixedly connected to the opposite side of the two movable lugs. When the movable lugs are pushed out from the bottom of the scaffold board, the protruding strips can push the movable lugs, improving the convenience of pushing out the movable lugs. A reinforcing rod is fixedly connected between the ends of the two movable lugs away from the fixed lugs. The reinforcing rod is welded to the movable lugs, which can enhance the connection strength between the two movable lugs, ensure that the movable lugs move synchronously during the sliding process, and also improve the overall load-bearing capacity of the movable lugs. By setting up a jacking device, when laying scaffold boards, the support components provide stable support on the grid structure, and the jacking components lift the scaffold boards upwards. This eliminates the need for workers to manually lift the entire scaffold board, as well as the need for crane equipment or additional manpower, greatly reducing the difficulty of laying scaffold boards, reducing laying time, and improving the efficiency of scaffold board laying.

[0008] Furthermore, the scaffold board is made of two identical metal mesh panels spliced ​​together. The top surfaces of the two metal mesh panels are flush, and the two metal mesh panels are fixedly connected together on both sides by two fixing plates. The bottom edges of the front and rear sides of the metal mesh panels protrude downward to form reinforcing ribs. The two adjacent reinforcing ribs are provided with identical strip-shaped limiting holes along the horizontal direction. The connecting shaft is inserted through the two limiting holes, and the diameter of the connecting shaft is smaller than the opening height of the limiting holes.

[0009] Furthermore, the length of the movable hanging ear matches the length of the scaffold board, and the two movable hanging ears are slidably installed at the bottom of the front and rear sides of the scaffold board in the horizontal direction, respectively. A reinforcing rod is fixedly connected between the ends of the two movable hanging ears that are away from the fixed hanging ear.

[0010] Furthermore, the lifting assembly includes a lifting rod, a fixed shaft, and bushings. The lifting rod is fixedly connected to the rotating ring. The fixed shaft is vertically inserted into the free end of the lifting rod in the horizontal direction, and the fixed shaft is parallel to the connecting shaft. There are two bushings, which are symmetrically rotated and sleeved on both ends of the fixed shaft.

[0011] Furthermore, the support assembly includes a support rod, a Z-shaped rod, a hook, and a return spring. The support rod is fixedly connected to the swivel ring, and a notch matching the width of the support rod is provided at the bottom of the fixing plate near the fixing lug. The support rod and the top rod on the same swivel ring are located in the same vertical plane, and the angle between the support rod and the top rod is an acute angle. One end of the Z-shaped rod is slidably inserted into the end of the support rod away from the swivel ring, and the free end of the Z-shaped rod protrudes away from the top rod. The hook is fixedly connected to the free end of the Z-shaped rod, and the opening direction of the hook is opposite to the direction of the top rod. One end of the return spring is fixedly connected to the end of the Z-shaped rod located inside the support rod, and the other end of the return spring is fixedly connected to the inside of the support rod.

[0012] Furthermore, a connecting rod is fixedly connected between the two Z-shaped rods, and when the hook is attached to the bottom chord of the space frame, the connecting rod is always lower than the bottom of the reinforcing rib.

[0013] Furthermore, a hanging plate is rotatably sleeved at the middle position of the connecting shaft. The hanging plate is magnetic and is always completely located in the gap between the two metal mesh panels. The free end of the hanging plate faces the side where the fixed hanging ear is located, and the side of the hanging plate near the fixed hanging ear is inclined from top to bottom towards the connecting shaft. A hanging interface is provided at the bottom of the hanging plate, and a hanging rod is snapped into the hanging interface. The two ends of the hanging rod are respectively fixedly connected to two reinforcing ribs of the two metal mesh panels that are close to each other. An L-shaped protrusion is fixedly connected to the top of the free end of the hanging plate, and the top of the L-shaped protrusion protrudes towards the connecting shaft.

[0014] Furthermore, a fixing block is fixedly connected to the side of the hanging plate away from the L-shaped protrusion. A stop bar is horizontally inserted through the free end of the fixing block in the front-back direction. The two ends of the stop bar are respectively inserted into two limiting holes. In the initial state, the stop bar can keep in contact with the inner wall of the top of the limiting hole when the hanging plate is pried. The diameter of the stop bar is smaller than the opening height of the limiting hole. When the stop bar is in contact with the inner wall of the bottom of the limiting hole, the bottom of the hanging plate is higher than the top of the hanging bar. When the stop bar contacts the top of the limiting hole, the top of the hanging plate is flush with the top of the hanging bar. At this time, the inclined surface of the free end of the hanging plate can be directly opposite the hanging bar.

[0015] Furthermore, a notch matching the diameter of the connecting rod is provided on the top inner wall of the limiting hole, and the distance from the notch to the axis of the connecting shaft is greater than the length of the support rod. A notch matching the diameter of the connecting rod is provided on the bottom inner wall of the limiting hole, and the connecting rod can be inserted into the notch through the notch.

[0016] Furthermore, a U-shaped handle is slidably mounted vertically on the fixed plate near the fixed lug. The handle opening faces downwards, and the connecting rod is located within the handle opening area. Initially, the top and bottom of the handle are flush with the top and bottom of the fixed plate, respectively. When the handle is pulled upwards to its maximum displacement, the top of the handle is higher than the top of the fixed plate.

[0017] The technical effects and advantages of this invention are as follows: This invention, by setting up a lifting device, utilizes a support component to provide stable support on the grid structure during the laying of scaffold boards. The lifting component then lifts the scaffold boards upwards, eliminating the need for workers to manually lift the entire scaffold board, as well as the need for crane equipment or additional manpower. This significantly reduces the difficulty of laying scaffold boards, shortens the laying time, and improves the laying efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the scaffolding boards and lifting device in use according to the present invention; Figure 3 In this invention Figure 2 Enlarged view of part A; Figure 4 This is a three-dimensional schematic diagram of the scaffolding boards and lifting device in this invention when they are retracted. Figure 5 In this invention Figure 4 Enlarged view of part B; Figure 6 This is a three-dimensional schematic diagram of some of the scaffold boards and lifting devices in this invention; Figure 7This is a three-dimensional schematic diagram of the connecting shaft, lifting device, and hanging plate of the present invention.

[0019] In the diagram: 1. Space frame; 2. Scaffold board; 3. Fixed hanging lug; 4. Movable hanging lug; 5. Connecting shaft; 6. Rotary ring; 7. Fixing plate; 8. Reinforcing rib; 9. Limiting hole; 10. Reinforcing rod; 11. Top rod; 12. Fixing shaft; 13. Bushing; 14. Support rod; 15. Z-shaped rod; 16. Hook; 17. Return spring; 18. Notch; 19. Connecting rod; 20. Hanging plate; 21. Hanging interface; 22. Hanging rod; 23. L-shaped protrusion; 24. Fixing block; 25. Stop bar; 26. Bayonet; 27. Notch; 28. Handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] This invention provides, for example Figures 1 to 7 The illustrated platform for the renovation and maintenance of high-altitude steel space frames includes: a space frame 1, scaffold boards 2, fixed lugs 3, movable lugs 4, and a lifting device. The space frame 1 is composed of multiple metal chords spliced ​​together, with the joints connected by fasteners or U-shaped buckles (not shown in the figure). Multiple scaffold boards 2 are evenly laid on the space frame 1. Two fixed lugs 3 are fixedly connected to the same side of each scaffold board 2. Two movable lugs 4 are movably connected to... On the side of the scaffold board 2 opposite to the fixed hanging ear 3, it is used to hang the scaffold board 2 on the grid frame 1 in conjunction with the fixed hanging ear 3; the lifting device includes a connecting shaft 5, a rotating ring 6, a lifting component and a support component. The connecting shaft 5 is fixedly connected between the two movable hanging ears 4 near the end of the fixed hanging ear 3. There are two rotating rings 6, which are rotatably sleeved on the connecting shaft 5. The lifting component is fixedly connected to the rotating ring 6 and is used to lift the scaffold board 2 upward. The support component is connected to the rotating ring 6 and is used to support the scaffold board 2 on the grid frame 1. The scaffold board 2 is made of two identical metal mesh panels spliced ​​together. The top surfaces of the two metal mesh panels are flush, and the two sides of the two metal mesh panels are fixedly connected together by two fixing plates 7. The metal mesh panels are made of high-strength metal materials, which not only ensures the load-bearing strength of the scaffold board 2, but also has good breathability and anti-slip performance, which can effectively prevent workers from slipping during operation. The bottom edges of the front and rear sides of the metal mesh panels protrude downward to form reinforcing ribs 8. The reinforcing ribs 8 are integrally formed with the metal mesh panels, which can effectively enhance the overall rigidity of the scaffold board 2 and prevent the scaffold board 2 from bending and deforming due to force during use. The two adjacent reinforcing ribs 8 are both provided with identical strip-shaped limiting holes 9 in the horizontal direction. The connecting shaft 5 is inserted between the two limiting holes 9, and the diameter of the connecting shaft 5 is smaller than the opening height of the limiting hole 9. The length of the movable lug 4 matches the length of the scaffold board 2, and the two movable lugs 4 are slidably installed at the bottom of the front and rear sides of the scaffold board 2 in the horizontal direction. Several protruding strips are evenly fixedly connected to the opposite side of the two movable lugs 4. When the movable lugs 4 are pushed out from the bottom of the scaffold board 2, the movable lugs 4 can be pushed by the protruding strips, which improves the convenience of pushing out the movable lugs 4. A reinforcing rod 10 is fixedly connected between the ends of the two movable lugs 4 away from the fixed lug 3. The reinforcing rod 10 is welded and fixed to the movable lugs 4, which can enhance the connection strength between the two movable lugs 4, ensure that the movable lugs 4 move synchronously during the sliding process, and also improve the overall load-bearing capacity of the movable lugs 4. The lifting assembly includes a lifting rod 11, a fixed shaft 12, and bushings 13. The lifting rod 11 is fixedly connected to the rotating ring 6. The fixed shaft 12 is vertically inserted into the free end of the lifting rod 11 along the horizontal direction, and the fixed shaft 12 is parallel to the connecting shaft 5. There are two bushings 13, which are symmetrically rotated and sleeved on both ends of the fixed shaft 12. The support assembly includes a support rod 14, a Z-shaped rod 15, a hook 16, and a return spring 17. The support rod 14 is fixedly connected to the rotating ring 6, and a notch 18 matching the width of the support rod 14 is opened at the bottom of the fixing plate 7 near the fixing lug 3. The support rod 14 and the top rod 11 on the same rotating ring 6 are located in the same vertical plane, and the included angle between the support rod 14 and the top rod 11 is an acute angle. One end of the Z-shaped rod 15 is slidably inserted into the end of the support rod 14 away from the rotating ring 6, and the free end of the Z-shaped rod 15 protrudes in the direction away from the top rod 11. The hook 16 is fixedly connected to the free end of the Z-shaped rod 15, and the opening direction of the hook 16 is opposite to the direction of the top rod 11. One end of the return spring 17 is fixedly connected to the end of the Z-shaped rod 15 located inside the support rod 14, and the other end of the return spring 17 is fixedly connected to the inside of the support rod 14. When the laying position is unfavorable, the movable lug 4 can be completely pulled out from the bottom of the scaffold board 2. Since the movable lug 4 is much lighter than the scaffold board 2, it can easily support the scaffold board 2 and place the extended movable lug 4 on the chord on the opposite side of the space frame 1. After the movable lug 4 is connected to the chord on the opposite side of the space frame 1, the support rod 14 can be pulled, causing the support rod 14 to deflect closer to the fixed lug 3. As the support rod 14 deflects, it can drive the rotating ring 6 to rotate. As the rotating ring 6 rotates, the top rod 11 can be deflected upward under the drive of the rotating ring 6 and slightly upward through the bushing 13 on the fixed shaft 12. When the scaffold board 2 is lifted, the hook 16 can be pulled so that the hook 16 is hooked on the chord of the space frame 1 near the scaffold board 2. When the hook 16 is pulled, the Z-shaped rod 15 can stretch the return spring 17 under the pull of the hook 16. When the hook 16 is hooked together with the chord of the space frame 1, the side of the scaffold board 2 near the fixed hanging ear 3 is tilted upward. At this time, the scaffold board 2 can be pushed to move gradually to the other side of the space frame 1. During the movement of the scaffold board 2, since its bottom can be supported by the bushing 13, the scaffold board 2 can slide relatively smoothly to the opposite side of the space frame 1, improving the convenience of the movement of the scaffold board 2. When the side of the scaffold board 2 away from the fixed lug 3 is completely moved to the opposite side of the space frame 1, the fixed lug 3 also moves to a position close to the hook 16. At this time, the side of the scaffold board 2 close to the fixed lug 3 can be lifted upwards. Then, the two hooks 16 are removed from the chord of the space frame 1 in sequence and deflected to the bottom of the scaffold board 2 under the action of gravity. After both hooks 16 are removed, the side of the scaffold board 2 close to the fixed lug 3 is slowly lowered. The fixed lug 3 can move downwards and hook onto the chord previously hooked by the hook 16. Thus, the scaffold board 2 can be laid without the aid of lifting equipment and additional manpower, thereby reducing the difficulty of laying the scaffold board 2 and improving the laying efficiency of the scaffold board 2.

[0022] like Figures 3 to 7 As shown, a connecting rod 19 is fixedly connected between the two Z-shaped rods 15. When the hook 16 is hooked together with the bottom chord of the space frame 1, the connecting rod 19 is always lower than the bottom of the reinforcing rib 8. A slot 26 matching the diameter of the connecting rod 19 is opened on the top inner wall of the limiting hole 9. The distance from the slot 26 to the axis of the connecting shaft 5 is greater than the length of the support rod 14. A notch 27 matching the diameter of the connecting rod 19 is opened on the bottom inner wall of the limiting hole 9. The connecting rod 19 can be inserted into the slot 26 through the notch 27. By providing a connecting rod 19 between the two Z-shaped rods 15, the two Z-shaped rods 15 and the support rod 14 can move synchronously. With a latch 26, after the hook 16 is used, the support rod 14 can be deflected towards the bottom of the scaffold board 2 via the connecting rod 19. During this process, the connecting rod 19 can be pulled, allowing it to move to a position opposite to the notch 27. As the connecting rod 19 is pulled, the Z-shaped rods 15 can stretch the return spring 17 under the pull of the connecting rod 19. The support rod 14 continues to deflect, allowing the connecting rod 19 to pass through the notch 27 and engage in the latch 26. Then, the connecting rod 19 is released, at which point it is locked in the latch 26 by the tension of the return spring 17 on the Z-shaped rod 15. This locks the connecting rod 19, support rod 14, Z-shaped rod 15, and other structures, allowing them to be stored at the bottom of the scaffold board 2, reducing their space occupation and improving the convenience of storing the scaffold board 2.

[0023] like Figure 6 and Figure 7 As shown, a hanging plate 20 is rotatably sleeved at the middle position of the connecting shaft 5. The hanging plate 20 is magnetic and is always completely located in the gap between the two metal mesh panels. The free end of the hanging plate 20 faces the side where the fixed hanging ear 3 is located, and the side of the hanging plate 20 near the fixed hanging ear 3 is inclined from top to bottom towards the connecting shaft 5. A hanging interface 21 is provided at the bottom of the hanging plate 20. A hanging rod 22 is snapped into the hanging interface 21. The two ends of the hanging rod 22 are fixedly connected to two reinforcing ribs 8 of the two metal mesh panels that are close to each other. An L-shaped protrusion 23 is fixedly connected to the top of the free end of the hanging plate 20, and the top of the L-shaped protrusion 23 protrudes towards the connecting shaft 5. A fixing block 24 is fixedly connected to the side of the hanging plate 20 away from the L-shaped protrusion 23. A stop bar 25 is horizontally inserted through the free end of the fixing block 24 in the front-back direction. The two ends of the stop bar 25 are respectively inserted into the two limiting holes 9. In the initial state, the stop bar 25 can keep in contact with the inner wall of the top of the limiting hole 9 under the prying of the hanging plate 20. The diameter of the stop bar 25 is smaller than the opening height of the limiting hole 9. When the stop bar 25 is in contact with the inner wall of the bottom of the limiting hole 9, the bottom of the hanging plate 20 is higher than the top of the hanging rod 22. When the stop bar 25 contacts the top of the limiting hole 9, the top of the hanging plate 20 is flush with the top of the hanging rod 22. At this time, the inclined surface of the free end of the hanging plate 20 can be directly opposite the hanging rod 22. With the hanging plate 20 installed, in the initial state, the hanging plate 20 can pry the fixing block 24 under the action of gravity, so that the stop bar 25 can fit against the top inner wall of the limiting hole 9. As the movable hanging ear 4 is gradually retracted to the bottom of the scaffold board 2, the connecting shaft 5 can move towards the hanging bar 22 under the drive of the movable hanging ear 4. When the hanging plate 20 contacts the hanging bar 22, as the connecting shaft 5 continues to push the hanging plate 20 to move, when the inclined surface of the hanging plate 20 contacts the hanging bar 22, the hanging plate 20 can be pushed upward by the hanging bar 22. As the connecting shaft 5 continues to push the hanging plate 20 to move, when the hanging interface 21 at the bottom of the hanging plate 20 is aligned with the hanging rod 22, the hanging plate 20 can deflect downward under the action of gravity and be attracted to the hanging rod 22 by its own magnetic force. Thus, the hanging plate 20 and the hanging rod 22 work together to automatically lock the connecting shaft 5, thereby allowing the movable hanging ear 4 to be retracted at the bottom of the scaffold board 2, preventing the movable hanging ear 4 from sliding out from the bottom of the scaffold board 2 during the transportation of the scaffold board 2, and improving the convenience of transporting the scaffold board 2. When it is necessary to remove the movable lug 4 from the bottom of the scaffold board 2, the hanging plate 20 can be pulled upward by the L-shaped protrusion 23, so that the hanging rod 22 can be removed from the hanging interface 21 at the bottom of the hanging plate 20. Then the movable lug 4 can be pushed to remove it from the bottom of the scaffold board 2.

[0024] like Figure 4 and Figure 5 As shown, a U-shaped handle 28 is slidably installed on the fixing plate 7 near the fixing lug 3 in the vertical direction. The handle 28 has an opening facing downwards, and the connecting rod 19 is located in the opening area of ​​the handle 28. Initially, the top and bottom of the handle 28 are flush with the top and bottom of the fixing plate 7, respectively. When the handle 28 is pulled upwards to the maximum displacement, the top of the handle 28 is higher than the top of the fixing plate 7. Initially, the top and bottom of the handle 28 are flush with the top and bottom of the fixed plate 7, respectively. This design allows the handle 28 to be hidden inside the fixed plate 7 when not in use, without affecting the overall flatness of the scaffold board 2 or the operation of the workers. When the handle 28 is pulled upward to the maximum displacement, the top of the handle 28 is higher than the top of the fixed plate 7. At this time, the workers can easily move and adjust the scaffold board 2 by holding the handle 28, improving the convenience of operation.

[0025] All other embodiments obtained by those skilled in the art based on the embodiments in this disclosure without inventive effort are within the scope of protection of this disclosure.

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0030] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A working platform suitable for the renovation and maintenance of high-altitude steel space frames, characterized in that, include: The space frame (1) is composed of multiple metal chords spliced ​​together; Scaffold boards (2), there are multiple scaffold boards (2), and multiple scaffold boards (2) are evenly laid on the grid frame (1); Fixed hanging ears (3), the number of fixed hanging ears (3) is two, and the two fixed hanging ears (3) are fixedly connected to the same side of the scaffold board (2); Movable hanging ears (4), there are two movable hanging ears (4), both of which are movably connected to the side of the scaffold board (2) opposite to the fixed hanging ear (3), and are used to cooperate with the fixed hanging ear (3) to hang the scaffold board (2) on the grid frame (1); The lifting device includes a connecting shaft (5), a rotating ring (6), a lifting assembly, and a support assembly. The connecting shaft (5) is fixedly connected between the ends of two movable lugs (4) near the fixed lugs (3). There are two rotating rings (6), which are rotatably sleeved on the connecting shaft (5). The lifting assembly is fixedly connected to the rotating rings (6) and is used to lift the scaffold boards (2) upward. The support assembly is connected to the rotating rings (6) and is used to support the scaffold boards (2) by placing them on the grid frame (1).

2. The high-altitude steel space frame renovation and maintenance work platform according to claim 1, characterized in that: The scaffold board (2) is made of two identical metal mesh panels spliced ​​together. The top surfaces of the two metal mesh panels are flush, and the two sides of the two metal mesh panels are fixedly connected together by two fixing plates (7). The bottom edges of the front and rear sides of the metal mesh panels protrude downward to form reinforcing ribs (8). The two adjacent reinforcing ribs (8) are provided with identical strip-shaped limiting holes (9) in the horizontal direction. The connecting shaft (5) is inserted between the two limiting holes (9), and the diameter of the connecting shaft (5) is smaller than the opening height of the limiting hole (9).

3. The high-altitude steel space frame renovation and maintenance work platform according to claim 2, characterized in that: The length of the movable hanging ear (4) matches the length of the scaffold board (2), and the two movable hanging ears (4) are slidably installed at the bottom of the front and rear sides of the scaffold board (2) in the horizontal direction respectively. A reinforcing rod (10) is fixedly connected between the ends of the two movable hanging ears (4) away from the fixed hanging ear (3).

4. The high-altitude steel space frame renovation and maintenance work platform according to claim 3, characterized in that: The lifting assembly includes a top rod (11), a fixed shaft (12), and bushings (13). The top rod (11) is fixedly connected to the rotating ring (6). The fixed shaft (12) is vertically inserted into the free end of the top rod (11) in the horizontal direction, and the fixed shaft (12) is parallel to the connecting shaft (5). There are two bushings (13), and the two bushings (13) are symmetrically rotated and sleeved on both ends of the fixed shaft (12).

5. The high-altitude steel space frame renovation and maintenance work platform according to claim 4, characterized in that: The support assembly includes a support rod (14), a Z-shaped rod (15), a hook (16), and a return spring (17). The support rod (14) is fixedly connected to the swivel (6), and the bottom of the fixing plate (7) near the fixing lug (3) has a notch (18) matching the width of the support rod (14). The support rod (14) and the top rod (11) on the same swivel (6) are located in the same vertical plane, and the included angle between the support rod (14) and the top rod (11) is an acute angle. The Z-shaped rod (15) One end of the Z-shaped rod (15) is slidably inserted into the end of the support rod (14) away from the rotating ring (6), and the free end of the Z-shaped rod (15) protrudes in the direction away from the top rod (11). The hook (16) is fixedly connected to the free end of the Z-shaped rod (15), and the opening direction of the hook (16) is opposite to the direction of the top rod (11). One end of the return spring (17) is fixedly connected to the end of the Z-shaped rod (15) located inside the support rod (14), and the other end of the return spring (17) is fixedly connected to the inside of the support rod (14).

6. The high-altitude steel space frame renovation and maintenance work platform according to claim 5, characterized in that: A connecting rod (19) is fixedly connected between the two Z-shaped rods (15), and when the hook (16) is hooked together with the bottom chord of the space frame (1), the connecting rod (19) is always lower than the bottom of the reinforcing rib (8).

7. The high-altitude steel space frame renovation and maintenance work platform according to claim 6, characterized in that: A hanging plate (20) is rotatably sleeved at the middle position of the connecting shaft (5). The hanging plate (20) is magnetic and is always completely located in the gap between the two metal mesh panels. The free end of the hanging plate (20) faces the side where the fixed hanging ear (3) is located, and the side of the hanging plate (20) near the fixed hanging ear (3) is inclined from top to bottom towards the connecting shaft (5). A hanging interface (21) is provided at the bottom end of the hanging plate (20). A hanging rod (22) is snapped into the hanging interface (21). The two ends of the hanging rod (22) are fixedly connected to two reinforcing ribs (8) of the two metal mesh panels that are close to each other. An L-shaped protrusion (23) is fixedly connected to the top of the free end of the hanging plate (20).

8. The high-altitude steel space frame renovation and maintenance work platform according to claim 7, characterized in that: A fixing block (24) is fixedly connected to the side of the hanging plate (20) away from the L-shaped protrusion (23). A stop rod (25) is horizontally inserted through the free end of the fixing block (24) in the front-back direction. The two ends of the stop rod (25) are respectively inserted into two limiting holes (9). In the initial state, the stop rod (25) can keep in contact with the inner wall of the top of the limiting hole (9) under the prying of the hanging plate (20). The diameter of the stop rod (25) is smaller than the opening height of the limiting hole (9). When the stop rod (25) is in contact with the inner wall of the bottom of the limiting hole (9), the bottom of the hanging plate (20) is higher than the top of the hanging rod (22). When the stop rod (25) is in contact with the top of the limiting hole (9), the top of the hanging plate (20) is flush with the top of the hanging rod (22). At this time, the inclined surface of the free end of the hanging plate (20) can be directly opposite the hanging rod (22).

9. The high-altitude steel space frame renovation and maintenance work platform according to claim 8, characterized in that: The upper inner wall of the limiting hole (9) is provided with a slot (26) that matches the diameter of the connecting rod (19), and the distance from the slot (26) to the axis of the connecting shaft (5) is greater than the length of the support rod (14). The lower inner wall of the limiting hole (9) is provided with a notch (27) that matches the diameter of the connecting rod (19), and the connecting rod (19) can be inserted into the slot (26) through the notch (27).

10. The high-altitude steel space frame renovation and maintenance work platform according to claim 9, characterized in that: A U-shaped handle (28) is slidably installed on the fixed plate (7) near the fixed lug (3) in the vertical direction. The handle (28) has an opening facing downwards, and the connecting rod (19) is located in the opening area of ​​the handle (28). Initially, the top and bottom of the handle (28) are flush with the top and bottom of the fixed plate (7) respectively. When the handle (28) is pulled upwards to the maximum displacement, the top of the handle (28) is higher than the top of the fixed plate (7).

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