Lifting structure of a heavy GIS installation platform

Abstract

The present application belongs to the technical field of hoisting equipment, and discloses a hoisting structure of a heavy GIS installation platform, which comprises: a transfer platform serving as a transfer structure of the hoisting structure; and a hoisting assembly comprising: hydraulic rods, a cross beam, a positioning structure, a clamping structure, an electric hoist, a binding belt, a steering limiting structure and a binding piece; the hydraulic rods are arranged in four numbers and fixedly installed at the top corners of the transfer platform; the cross beam is fixedly installed above the hydraulic rods and used for bearing; and the positioning structure is fixedly installed above the cross beam; the hoisting structure integrates the functions of transfer and hoisting, can complete the whole-process operation from hoisting to accurate alignment of the equipment without calling external equipment such as a crane and a gantry frame, and effectively avoids the risks of tilting and falling in the hoisting and transfer of the heavy GIS through the symmetrical bearing of the four hydraulic rods, the three-dimensional fixation of the electric hoist binding belt and the clamping structure, reduces the close operation of personnel, and lowers the incidence of safety accidents.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, and particularly relates to a lifting structure for a heavy-duty GIS installation platform. Background Technology

[0002] In the power system architecture of substations, heavy-duty GIS (gas-insulated switchgear) circuit breakers occupy a core position and are key equipment to ensure the stable operation of the power system. Their core functions include normal circuit opening and closing control and rapid isolation under fault conditions, which are directly related to the safety and reliability of power grid operation. Under extreme conditions (such as high temperature, low temperature, strong electromagnetic interference, short circuit impact, etc.), properly installed heavy-duty GIS circuit breakers can maintain stable and reliable operating performance, effectively avoid major accidents such as electrical short circuits and equipment breakdown, and provide a solid guarantee for the safe power supply of the power grid. Therefore, the installation quality and efficiency of heavy-duty GIS circuit breakers have become an important factor affecting the effectiveness of power facility construction and the subsequent power grid operation and maintenance level.

[0003] However, in the traditional installation process of heavy-duty GIS circuit breakers, the flange connection process has long faced problems of low efficiency and difficulty in ensuring accuracy. The conventional operation process for this process is as follows: First, a large crane or a simple gantry crane is used to hoist the bulky GIS circuit breaker body, which weighs several tons or even tens of tons, onto the designated installation foundation. Then, multiple workers need to work together to perform manual fine-tuning operations, repeatedly adjusting the position and angle of the equipment to achieve precise alignment between the flange holes of the equipment and the flange holes of the foundation. This process not only consumes a lot of manpower and time (a single flange connection often takes several hours or even longer), but the accuracy of manual fine-tuning is also easily affected by the operator's experience, physical condition, and external environment (such as wind force and site space), making it difficult to guarantee the stability of the connection accuracy.

[0004] To address the shortcomings of traditional installation methods, the industry has seen related technological innovations, such as the "Heavyweight GIS Intelligent Translation Installation Platform and Control System" with application number CN202410030912.7. This technical solution uses an intelligent translation mechanism to facilitate the transfer of heavyweight GIS circuit breakers during installation, reducing reliance on manpower and positional deviations during equipment transfer to some extent. However, the platform has significant functional limitations: its core design focuses on "translation and transfer," lacking a supporting high-efficiency lifting mechanism. This leads to difficulties in connecting the heavyweight GIS circuit breaker with the installation platform. Because it is not possible to easily achieve vertical lifting and precise positioning of the equipment, staff still need to use external lifting equipment (such as cranes) to assist in connecting the equipment and the platform. This not only fails to completely eliminate reliance on traditional lifting equipment but also increases the complexity of procedures during equipment transfer and docking. Summary of the Invention

[0005] This invention addresses the problem in existing technologies where vertical lifting and precise positioning of equipment cannot be easily achieved, requiring workers to rely on external lifting equipment (such as cranes) to connect the equipment to the platform. This not only fails to completely eliminate dependence on traditional lifting equipment but also increases the complexity of the equipment transfer and docking process. The invention proposes the following technical solution:

[0006] A lifting structure for a heavy-duty GIS installation platform includes:

[0007] The transfer platform serves as a transfer structure within the lifting structure;

[0008] The lifting components include: hydraulic rods, crossbeams, positioning structures, clamping structures, electric hoists, straps, steering limit structures, and binding components;

[0009] Four hydraulic rods are installed and fixedly mounted at the four corners of the top of the transfer platform.

[0010] A crossbeam is fixedly installed above the hydraulic rod for load-bearing purposes;

[0011] A positioning structure is fixedly installed above the crossbeam for overall positioning;

[0012] A clamping structure is fixedly installed below the crossbeam for positioning and clamping the GIS.

[0013] An electric hoist is installed below the crossbeam and located at one end of the clamping structure;

[0014] The strap is fixedly installed at one end of the electric hoist. The electric hoist drives the strap to move, thereby increasing the tensile strength of the GIS.

[0015] A steering limit structure is fixedly installed inside the transfer platform to change the angle of the chain in the electric hoist;

[0016] The strapping device is fixedly installed below the transfer platform and is used to strap GIS.

[0017] As a preferred embodiment of the above technical solution, the number of positioning structures is set to four, and the four positioning structures are respectively installed at the four top corners of the crossbeam. All four positioning structures are positioning antennas.

[0018] As a preferred embodiment of the above technical solution, the clamping structure includes a mounting block, which is disposed below the crossbeam. A telescopic component is fixedly mounted on one end of the mounting block, and a positioning component is rotatably connected to the outer side of the movable end of the telescopic component. A snap-fit ​​component is fixedly mounted on one end of the positioning component.

[0019] As a preferred embodiment of the above technical solution, the electric hoist is composed of a motor, a handle, a chain, and hooks, wherein two hooks are connected to the same strap, the chain is sleeved inside the steering limit structure, and a ring is welded to the end of the chain away from the strap. A fixing member is connected through the ring, and the fixing member is fixedly connected to the movable end of the hydraulic rod.

[0020] As a preferred embodiment of the above technical solution, the steering limiting structure includes a support plate, which is fixedly installed on the inner side of the transfer platform. The number of support plates is set to eight in total. Two support plates form a group, and the same guide wheel is rotatably connected between the support plates in a group. The same sliding member is slidably connected inside the support plates in a group at a position away from the outer side of the guide wheel. A concave block is welded to the outer side of the support plates in a group.

[0021] As a preferred embodiment of the above technical solution, the steering limiting structure further includes a connecting rod, which is fixedly installed on the end face of the sliding member away from the guide wheel. A swing rod is movably connected inside the connecting rod, and a push rod is movably connected inside the swing rod. A push plate is snapped onto one end of the push rod. A piston rod is symmetrically embedded on the end face of the push plate near the concave block. A piston sleeve is sleeved on the outside of the piston rod. The end of the piston sleeve away from the push plate is fixedly connected to a support plate. A magnet is snapped onto the inside of the concave block.

[0022] As a preferred embodiment of the above technical solution, both the sliding member and the push plate are rotatably connected to a circular roller, and both the sliding member and the push plate have chamfered edges.

[0023] As a preferred embodiment of the above technical solution, an arc-shaped ring is welded above the motor of the electric hoist, and a hook is connected through the inside of the arc-shaped ring. The top of the hook is fixedly connected to the bottom of the crossbeam.

[0024] As a preferred embodiment of the above technical solution, a column is connected through the middle of the swing rod, the column and the support plate are rotatably connected, guide grooves are provided on both sides of the top of the swing rod, and round rods are welded inside the connecting rod and the pushing rod, with the round rods located inside the guide grooves.

[0025] The beneficial effects of this invention are as follows:

[0026] (1) Integrating transfer and lifting functions, without the need to call for external equipment such as cranes and gantry cranes, the entire process from equipment hoisting to precise positioning can be completed. The four sets of hydraulic rods symmetrically bear the load, and the electric hoist straps and clamping structure are three-dimensionally fixed, effectively avoiding the risk of tilting and falling during the hoisting and transfer of heavy GIS, while reducing close-range operation by personnel and reducing the incidence of safety accidents.

[0027] (2) The structure ensures safety through a triple anti-winding design, which ensures that the chain of the electric hoist is in a limited state during installation and placement, preventing the chain from winding when both ends are free, thus facilitating the movement of the chain and preventing the chain from interfering with the lifting of heavy GIS.

[0028] (3) No additional equipment such as gantry cranes or cranes is required, the equipment footprint is reduced by 60%, the resource integration level is significantly improved, the GIS installation cost of a single substation is reduced by 30%, and technical support is provided for the large-scale construction of power facilities. Attached Figure Description

[0029] Figure 1 The diagram shown is a structural schematic of the lifting structure of a heavy-duty GIS installation platform in Embodiment 1;

[0030] Figure 2 The image shown is a front view of the lifting structure of a heavy-duty GIS installation platform in Embodiment 1;

[0031] Figure 3 The diagram shown is a schematic diagram of the clamping structure in Embodiment 1;

[0032] Figure 4 The diagram shown is a schematic of the installation structure of the binding in Embodiment 1;

[0033] Figure 5 The diagram shown is a schematic diagram of the steering limit structure in Embodiment 1;

[0034] Figure 6 The diagram shown is a schematic diagram of the push rod in Embodiment 1;

[0035] Figure 7 What is shown is Figure 6 A schematic diagram of the structure of region A in the middle.

[0036] In the diagram: 1. Transfer platform; 2. Hydraulic rod; 3. Crossbeam; 4. Positioning structure; 5. Clamping structure; 51. Mounting block; 52. Telescopic component; 53. Positioning component; 54. Snap-fit ​​component; 61. Electric hoist; 62. Strap; 63. Steering limit structure; 631. Support plate; 632. Guide wheel; 633. Sliding component; 634. Connecting rod; 635. Swing rod; 636. Push rod; 637. Push plate; 638. Circular roller; 639. Piston rod; 6310. Piston sleeve; 6311. Magnet; 6312. Concave block; 64. Binding component; 65. Ring; 66. Fixing component; 67. Arc ring; 68. Hook. Detailed Implementation

[0037] 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. Example 1

[0038] This invention provides a lifting structure for a heavy-duty GIS installation platform, such as... Figures 1 to 7 As shown, the system includes a transfer platform 1 and a lifting assembly. The transfer platform 1 serves as the transfer structure for the lifting structure. The lifting assembly includes: hydraulic rods 2, a crossbeam 3, a positioning structure 4, a clamping structure 5, an electric hoist 61, straps 62, a steering limit structure 63, and binding members 64. Four hydraulic rods 2 are fixedly installed at the four corners of the top of the transfer platform 1. The crossbeam 3 is fixedly installed above the hydraulic rods 2 for load-bearing. Four positioning structures 4 are located above the crossbeam 3, and each of the four positioning structures 4 is installed at one of the four corners of the top of the crossbeam 3. Each of the four positioning structures 4 serves as a positioning antenna. The system is positioned as a whole; the clamping structure 5 is located below the crossbeam 3 for positioning and clamping the GIS; the electric hoist 61 is located below the crossbeam 3 and at one end of the clamping structure 5; the binding strap 62 is fixedly installed at one end of the electric hoist 61, with four electric hoists 61 and two binding straps 62. The electric hoists 61 drive the binding straps 62 to move, thereby increasing the tension of the GIS; the steering limit structure 63 is fixedly installed inside the transfer platform 1 to change the angle of the chain in the electric hoist 61; the binding component 64 (specifically a chain) is fixedly installed below the transfer platform 1 for binding the GIS.

[0039] It fundamentally solves the core pain points of traditional heavy GIS installation, such as "reliance on external lifting equipment, low flange docking accuracy, and poor process efficiency", forming an integrated installation solution of "lifting-transfer-positioning-docking-safety protection".

[0040] In terms of efficiency, it integrates transportation and lifting functions, eliminating the need for additional external equipment such as cranes and gantry cranes. It can complete the entire process from equipment hoisting to precise positioning. The four sets of hydraulic rods 2 symmetrically bear the load, and the electric hoist 61 and the binding strap 62 are three-dimensionally fixed with the clamping structure 5, effectively avoiding the risks of tilting and falling during the hoisting and transportation of heavy GIS equipment. At the same time, it reduces close-range operation by personnel and lowers the accident rate.

[0041] In use, the transfer platform 1 moves to the outside of the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker). At this time, the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) is in contact with the clamping structure 5, and the clamping structure 5 clamps, fixes, and limits the top of the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker). Then, the strap 62 connected to the electric hoist 61 is placed under the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker). Then, the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) is connected to the transfer platform 1 by the binding member 64. Then, the electric hoist 61 is started. When the electric hoist 61 runs, it drives the chain to move. At this time, the chain drives the strap 62 into the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker). The hydraulic rod 2 is activated by applying an upward pulling force to the bottom of the gas-insulated switchgear / circuit breaker (GIS), which then drives the crossbeam 3 to rise. The rise of the crossbeam 3 pulls the heavy GIS (gas-insulated switchgear / circuit breaker) upward through the electric hoist 61, the strap 62, and the clamping structure 5. At this time, when the hydraulic rod 2 rises, it drives the chain in the electric hoist 61 (the chain away from the strap 62) to rise under the action of the ring 65 and the fixing part 66. At this time, the rising chain rotates and is limited inside the steering limit structure 63. The heavy GIS (gas-insulated switchgear / circuit breaker) is started using the above-mentioned lifting components, and the problem of mutual interference between the components during the lifting process is prevented.

[0042] To achieve the clamping and limiting of heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) as described in the above example, the following solution is provided: Figure 2 and Figure 3 As shown, the clamping structure 5 includes a mounting block 51, which is set below the crossbeam 3 by screws. A telescopic component 52 (specifically a cylinder) is embedded in one end face of the mounting block 51. A positioning component 53 is rotatably connected to the outer side of the movable end of the telescopic component 52 through a rotating shaft. A snap-fit ​​component 54 is installed at one end of the positioning component 53 by screws. The positioning component 53 and the snap-fit ​​component 54 have the same shape and are both semi-circular.

[0043] In use, the transfer platform 1 enters the outside of the heavy-duty GIS (gas-insulated switchgear / circuit breaker). At this time, the top outer surface of the heavy-duty GIS (gas-insulated switchgear / circuit breaker) is in contact with the inner surface of the positioning member 53. Then, the personnel fix the snap-fit ​​member 54 and the positioning member 53 with bolts. At this time, the snap-fit ​​member 54 and the positioning member 53 limit the heavy-duty GIS (gas-insulated switchgear / circuit breaker). Under the action of the telescopic member 52, the position of the positioning member 53 can be changed, so that the inner surface of the positioning member 53 can be in contact with the top outer surface of the heavy-duty GIS (gas-insulated switchgear / circuit breaker).

[0044] To address the issue of securing both ends of the chain in the electric hoist 61 as described above, preventing chain swaying and entanglement, the following solution is provided: Figure 1 , Figure 2 and Figure 4 As shown, the electric hoist 61 is composed of a motor, handle, chain, and hooks. Two hooks are connected to the same strap 62. The chain is fitted inside the steering limit structure 63. A ring 65 is welded to the end of the chain away from the strap 62. A fixing member 66 (specifically an arc-shaped positioning ring) is connected through the ring 65. The fixing member 66 is fixedly connected to the movable end of the hydraulic rod 2 (the outer side of the end near the crossbeam 3). Under the action of the fixing member 66 and the ring 65, the end of the chain away from the strap 62 in the electric hoist 61 is fixed to the hydraulic rod 2, so that the hydraulic rod 2 can pull the chain to move when it is raised and lowered. Under the action of the steering limit structure 63, the chain forms a V-shape, thereby preventing the chain from getting tangled.

[0045] To address the issue of the electric hoist 61 failing to swing its chain and becoming entangled during placement, as described in the above example, the following solution is provided: Figures 2 to 7As shown, the steering limiting structure 63 includes a support plate 631, which is fixedly installed on the inner side of the transfer platform 1. There are a total of eight support plates 631, with two support plates 631 forming a group. A group of support plates 631 is rotatably connected to the same guide wheel 632. A single sliding element 633 (specifically a concave plate, with a slider welded to one end, and a groove corresponding to the outer position of the slider) is slidably connected inside the support plate 631 at a position away from the guide wheel 632. A concave block 6312 is welded to the outer side. The steering limiting structure 63 also includes a connecting rod 634. The connecting rod 634 is fixedly installed on the end face of the sliding member 633 away from the guide wheel 632. The connecting rod 634 (which is composed of two horizontal rods and a round rod) is movably connected to a swing rod 635. A column is connected through the middle of the swing rod 635. The column and the support plate 631 are rotatably connected. Guide grooves are opened on both sides of the top of the swing rod 635. The round rod of the connecting rod 634 is located inside the guide groove. The swing rod 635 is movably connected inside. A push rod 636 is connected, and a push plate 637 is snapped onto one end of the push rod 636 (the push rod 636 is composed of a vertical plate, two horizontal plates, a round rod, and a limiting post, wherein the limiting post passes through the concave block 6312 and is fixedly connected to the push plate 637, and the round rod is located inside the guide groove of the swing rod 635). A piston rod 639 is symmetrically embedded on the end of the push plate 637 near the concave block 6312. A piston sleeve 6310 is sleeved on the outside of the piston rod 639. The end of the piston sleeve 6310 away from the push plate 637 is fixed to the support plate 631. The concave block 6312 is fitted with a magnet 6311 (one end of the magnet 6311 has a round hole, which is respectively fitted on the outside of the piston rod 639 and the limiting post). The sliding part 633 and the push plate 637 are both rotatably connected to the roller 638. The edges of the sliding part 633 and the push plate 637 are chamfered. An arc ring 67 is welded above the motor of the electric hoist 61. A hook 68 (specifically a self-locking hook with a self-locking function) is connected through the arc ring 67. The top of the hook 68 is fixedly connected to the bottom of the crossbeam 3.

[0046] During operation, the electric hoist 61 drives the chain to move. The chain near the strap 62 descends, while the chain away from the strap 62 enters the electric hoist 61. Due to the weight of the chain as it descends, the chain near the strap 62 slowly changes to a vertical position. At this time, the strap 62 changes from an arc-shaped surface to a flat surface. When the descending chain enters the concave block 6312, the magnet 6311 attracts the descending chain. The attraction between the two pulls the contacting roller 638, which in turn pushes the push plate 637 towards the concave block 6312. When the direction moves, the push plate 637 pushes the push rod 636 to move. When the push rod 636 moves, it pushes the swing rod 635 to swing. When the swing rod 635 swings, it pushes the connecting rod 634 to move towards the guide wheel 632. At this time, it drives the sliding member 633 to move to the outside of the rising chain, so that the rising end of the chain (the chain away from the strap 62) is limited, and the falling end (the chain near the strap 62) is simultaneously limited. Under the action of the roller 638, the resistance during the movement of the chain is reduced, and the phenomenon that the chain cannot move after the magnet 6311 attracts the chain is prevented.

[0047] Working principle: In actual use, the transfer platform 1 enters the outside of the heavy GIS (Gas Insulated Switchgear / Circuit Breaker). At this time, under the action of the telescopic member 52, the position of the positioning member 53 can be changed, so that the inner surface of the positioning member 53 fits against the top outer surface of the heavy GIS (Gas Insulated Switchgear / Circuit Breaker). Then, the personnel fix the snap-fit ​​member 54 to the positioning member 53 with screws. At this time, the top of the heavy GIS (Gas Insulated Switchgear / Circuit Breaker) is limited. Then, the strap 62 connected to the electric hoist 61 is placed under the heavy GIS (Gas Insulated Switchgear / Circuit Breaker). Then, the heavy GIS (Gas Insulated Switchgear / Circuit Breaker) and the transfer platform 1 are connected by the binding member 64.

[0048] Next, four electric hoists 61 are started. When the electric hoists 61 are running, the chains closer to the strap 62 rise, while the chains farther from the strap 62 descend. As the chains closer to the strap 62 continuously rise along the concave block 6312, they drive the roller 638 to rotate. (Because the magnet 6311 attracts the chain, the chain, through the roller 638 and the push plate 637, pushes the push rod 636 to move. When the push rod 636 moves, it pushes the swing rod 635 to swing.) The piston rod 639 moves along the inside of the piston sleeve 6310, causing a change in the pressure of the piston sleeve 6310. Two electric hoists 61 operate synchronously, driving the same strap 62 to move vertically upward. When the bottom end of the strap 62 is in contact with the bottom of the outer side of the heavy GIS (gas-insulated switchgear / circuit breaker), the heavy GIS (gas-insulated switchgear / circuit breaker) applies resistance to the strap 62 and causes the strap 62 to deform. This causes the chain near the strap 62 to tilt and separate from the concave block 6312.

[0049] Next, the air pressure inside the piston sleeve 6310 pushes the piston rod 639 to reset. When the piston rod 639 resets and moves, it drives the push plate 637 to move. At this time, the push plate 637 moves outward along the inside of the concave block 6312. At the same time, when the push rod 636 moves, the round rod of the push rod 636 moves inside the guide groove of the swing rod 635, thereby driving the swing rod 635 to rotate. When the swing rod 635 rotates, it drives the connecting rod 634 to move (through the cooperation of the guide groove and the round rod). When the connecting rod 634 moves, it drives the sliding member 633 to move towards the guide wheel 632 inside the support plate 631. At this time, the chain of the electric hoist 61 away from the strap 62 enters between the outside of the guide wheel 632 and the inside of the sliding member 633.

[0050] Then, the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) is secured using the binding 64, connecting it to the transfer platform 1. Next, the hydraulic rod 2 is activated, causing the crossbeam 3 to rise. The rise of the crossbeam 3, via the electric hoist 61, binding straps 62, and clamping structure 5, pulls the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) upwards. As the heavy-duty GIS (Gas Insulated Switchgear / Circuit Breaker) stretches, the binding 64 changes from a loose state to a taut state. At this point, as the hydraulic rod 2 rises, it is connected to the transfer platform 1 via the ring 65 and the fixing member 66. Under the action of the hydraulic rod 2, the chain in the electric hoist 61 (the chain away from the strap 62) rises along the outer side of the guide wheel 632 and between the sliding member 633, and drives the roller 638 to rotate. At this time, one end of the electric hoist 61 is fixed by the rising hydraulic rod 2, while the other end is fixed by the strap 62 and the heavy GIS (gas-insulated switchgear / circuit breaker). This makes both ends of the chain in the electric hoist 61 taut, preventing the chain from swinging and coming into contact with the heavy GIS (gas-insulated switchgear / circuit breaker) during the movement of the transfer platform 1.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A hoisting structure of a heavy GIS installation platform, characterized by, The utility model relates to a kind of GIS transport platform, including: Transport platform (1) is transported as hoisting structure structure; Hoisting assembly includes: hydraulic rod (2), crossbeam (3), positioning structure (4), clamping structure (5), electric hoist (61), bandage (62), steering limit structure (63) and binding piece (64); Hydraulic rod (2), quantity is set to four, and fixedly installed in transport platform (1) top four corners; Crossbeam (3) is fixedly installed above the hydraulic rod (2), for bearing; Positioning structure (4) is fixedly installed above the crossbeam (3), for overall positioning; Clamping structure (5) is fixedly installed below the crossbeam (3), for positioning and clamping GIS; Electric hoist (61) is arranged below the crossbeam (3) and is located one end of the clamping structure (5); Bandage (62) is fixedly installed in one end of the electric hoist (61), and bandage (62) is driven to displace by the electric hoist (61), for increasing the pulling force of GIS; Steering limit structure (63) is fixedly installed in the inner side of transport platform (1), for changing the angle of chain in the electric hoist (61); Binding piece (64) is fixedly installed below transport platform (1), for binding GIS; The steering limit structure (63) includes support plate (631), the support plate (631) is fixedly installed in the inner side of transport platform (1), the number of the support plate (631) is set to eight, two support plates (631) are a group, a group of support plates (631) are rotatably connected with same guide wheel (632), a group of support plates (631) are slidably connected with same sliding member (633) at the position away from the outer side of guide wheel (632) inside, a group of support plates (631) are welded with concave block (6312) outside; The steering limit structure (63) further includes connecting rod (634), the connecting rod (634) is fixedly installed on the end face of sliding member (633) away from guide wheel (632), swing rod (635) is movably connected in the connecting rod (634), push rod (636) is movably connected in the swing rod (635), push plate (637) is jogglingly installed in one end of push rod (636), piston rod (639) is symmetrically embedded and installed on the end face of push plate (637) close to concave block (6312), piston sleeve (6310) is sleeved on the outer side of piston rod (639), the end of piston sleeve (6310) away from push plate (637) and support plate (631) are fixedly connected, magnet (6311) is jogglingly installed in the concave block (6312).

2. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The number of the positioning structure (4) is set to four, four positioning structures (4) are respectively installed in the top four corners of crossbeam (3), and four positioning structures (4) are all positioning antennas.

3. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The clamping structure (5) comprises a mounting block (51) arranged below the cross beam (3), one end surface of the mounting block (51) is fixedly provided with an extension piece (52), the movable end of the extension piece (52) is rotatably connected with a positioning piece (53), and one end of the positioning piece (53) is fixedly provided with a clamping piece (54).

4. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The electric hoist (61) is composed of a motor, a handle, a chain and a hook, two hooks are connected with the same band (62), the chain is sleeved in the turning limiting structure (63), the end of the chain away from the band (62) is welded with a ring (65), the ring (65) is penetrated with a fixing piece (66), and the fixing piece (66) is fixedly connected with the movable end of the hydraulic rod (2).

5. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The sliding piece (633) and the pushing plate (637) are rotatably connected with a round roller (638) inside, and the edge of the sliding piece (633) and the pushing plate (637) is provided with a chamfer.

6. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The electric hoist (61) is welded with an arc-shaped ring (67) above the motor, the arc-shaped ring (67) is penetrated with a hook (68), and the top end of the hook (68) is fixedly connected with the bottom end of the cross beam (3).

7. The hoisting structure of a heavy-duty GIS installation platform according to claim 1, characterized in that, The swing rod (635) is penetrated with a stand in the middle, the stand is rotatably connected with the supporting plate (631), the top end of the swing rod (635) is provided with a guide groove on both sides, and the connecting rod (634) and the pushing rod (636) are welded with a round rod inside. The swing rod (635) is penetrated with a stand in the middle, the stand is rotatably connected with the supporting plate (631), the top end of the swing rod (635) is provided with a guide groove on both sides, and the connecting rod (634) and the pushing rod (636) are welded with a round rod inside.

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