Isolating switch hoisting tool

Abstract

The invention relates to the technical field of electric power tools, in particular to an isolating switch hoisting tool which comprises a forklift connecting pipe, a transverse supporting pipe and an alignment auxiliary system, brackets used for supporting an isolating switch are arranged at the two ends of the transverse supporting pipe, and the alignment auxiliary system comprises a sleeve arranged on the outer surface of the transverse supporting pipe in a sleeving mode. The top of the forklift connecting pipe is fixedly connected with a rotating piece capable of driving the sleeve to rotate, the guide rail is arranged in the sleeve, the output end of the guide rail is provided with a fine adjustment moving seat connected with the transverse supporting pipe, and the two ends of the interior of the transverse supporting pipe are each provided with a balance weight cavity for storing liquid. A balance compensation assembly used for changing liquid in the two balance weight cavities is arranged in the transverse supporting pipe, the soft connection positioning system is composed of a plurality of supporting piston rods arranged above the bracket, the device further comprises an inclined clamping block used for clamping the disconnecting switch, and a positioning assembly used for driving the inclined clamping block to move is arranged above the bracket.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, specifically to a hoisting tool for disconnecting switches. Background Technology

[0002] Disconnect switches, as key high-voltage electrical equipment in power systems, are widely used in substations, transmission lines, and distribution systems. They are mainly used to disconnect or connect circuits under no-load conditions, achieving electrical isolation and ensuring maintenance safety. Their structure typically includes components such as a base, insulating support, conductive switch, and operating mechanism. They are relatively large and heavy (generally 50–300 kg), and are mostly installed on outdoor high-altitude structures (such as gantry frames or H-shaped steel columns), often 3–8 meters above the ground.

[0003] During the construction of new substations or the replacement of existing equipment, the installation and dismantling of disconnect switches require hoisting operations. Currently, common hoisting equipment (such as truck cranes, hand-operated hoists, and pulley blocks) are generally used on site in conjunction with wire ropes or slings for lifting. However, this traditional hoisting method has many technical defects and safety hazards.

[0004] For example, patent document CN207251041U discloses a hoisting tool for disconnecting switches, comprising an upper section, an extension section, a lower section, a base, a clamp, and a pulley-assisted lifting device. The upper end of the extension section is connected to the upper section, and the lower end is connected to the lower section. The lower section is connected to the base. The hoisting tool is connected to the support column of the disconnecting switch via the clamp. The pulley-assisted lifting device is fixedly connected to the upper section. The hoisting tool for disconnecting switches in this patent document has a simple structure and is easy to operate, which can greatly reduce the difficulty of hoisting disconnecting switches and shorten the hoisting time. At the same time, it can avoid personnel injury and equipment damage that can easily be caused by manual lifting.

[0005] Existing disconnector hoisting technologies generally employ a simple hoisting method using hooks and pulley systems. This traditional method has significant drawbacks in practical applications: after the disconnector is lifted off the ground, due to the misalignment of the hook connection point with the equipment's center of gravity, coupled with the inherent degree of freedom limitations of the pulley system, three-dimensional spatial swaying is inevitable during hoisting. This swaying not only prolongs the positioning time but also makes it difficult to control the alignment accuracy of the disconnector base mounting holes and the pre-embedded bolts on the support within reasonable installation tolerance requirements. Often, multiple workers are required to manually straighten the switch in mid-air, increasing labor intensity and posing a serious risk of falls and impacts. More importantly, when operating in complex electromagnetic environments such as substations, traditional hoists are limited by the space of high-voltage lines, compressing their effective working height and preventing the mechanical arm from fully extending, significantly reducing installation flexibility. Therefore, this application proposes a disconnector hoisting tool. Summary of the Invention

[0006] The purpose of this invention is to provide a hoisting tool for disconnecting switches to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hoisting tool for disconnecting switches, comprising a forklift connecting pipe and a transverse support pipe, wherein both ends of the transverse support pipe are provided with brackets for supporting the disconnecting switch, and further comprising: The alignment assist system includes a sleeve fitted on the outer surface of the transverse support tube, and a rotating component that can drive the sleeve to rotate is fixedly connected to the top of the forklift tube. A guide rail is set inside the sleeve, and a fine-tuning shift seat connected to the transverse support tube is set at the output end of the guide rail. Both ends of the transverse support tube are provided with counterweight chambers for storing liquid. The two counterweight chambers are interconnected, so that the liquid can flow between the two counterweight chambers to change the weight distribution at both ends of the transverse support tube. The transverse support tube is provided with a balance compensation component for changing the liquid in the two counterweight chambers. The flexible joint positioning system consists of multiple supporting piston rods disposed above a bracket, and multiple oil cylinders for sliding connection of the piston ends of the supporting piston rods are fixedly connected inside the bracket. It also includes a slanted clamping block for clamping the disconnecting switch. A positioning component for driving the slanted clamping block to move is disposed above the bracket. Multiple unfoldable movable cards are disposed on the inclined surface of the slanted clamping block, and a clamping component for operating the unfolding of the multiple movable cards is disposed inside the slanted clamping block.

[0008] Preferably, the balance compensation component includes plugs respectively disposed inside two counterweight chambers, and the liquid in the counterweight chambers is stored between the two plugs. A linkage rod is connected between the two plugs, and a protruding ring is fixedly connected to the outer surface of the linkage rod. A first gear that is drivenly connected to the protruding ring is disposed inside the transverse support tube.

[0009] Preferably, the transverse support tube is rotatably connected to a shaft for supporting the first gear, the sleeve is fixedly connected to a double-sided rack, and one end of the shaft is fixedly connected to a second gear that meshes with the double-sided rack.

[0010] Preferably, the positioning component includes an oil collection cylinder fixedly connected to the top of the bracket, and the oil collection cylinder is connected to the bottom of the oil collection cylinder through an oil pipe. One end of the oil collection cylinder is slidably connected to a fine-hole spring piston rod adapted thereto. One end of the fine-hole spring piston rod is fixedly connected to a connecting tube for traction of the inclined clamping block. The top of the bracket is provided with a sliding groove for the inclined clamping block to slide.

[0011] Preferably, the clamping assembly includes multiple oil chamber ends formed inside the inclined clamping block, and the top of each of the multiple oil chamber ends is slidably connected to a matching lifting spring piston rod, and the top of the lifting spring piston rod is rotatably connected to the bottom of the movable card.

[0012] Preferably, the internal structure of the fine-hole spring piston rod is hollow and communicates with the connecting hollow pipe. The inside of the inclined clamp block is provided with an oil collection groove that communicates with the ends of multiple oil chambers. One end of the connecting hollow pipe is connected to the oil collection groove to supply oil. The outer surface of the fine-hole spring piston rod is fixedly connected with a solenoid valve for controlling the opening and closing of its hollow interior.

[0013] Preferably, the oil cylinder is internally fixedly connected to a spring that is fixedly connected to the piston end of the supporting piston rod.

[0014] Preferably, both ends of the transverse support tube are slidably connected to extension tubes for supporting the bracket, and the outer surface of the transverse support tube is provided with fastening bolts for fixing the extension tubes.

[0015] Preferably, one end of the extension tube is rotatably connected to a cylinder, the bottom of the bracket is rotatably connected to a crank that is rotatably connected to the extension tube, and the output end of the cylinder is provided with a push-pull rod rotatably connected inside the crank.

[0016] Preferably, a level sensor is fixedly connected to the top of the sleeve. The level sensor responds to the tilt state of the transverse support tube and is used to control the rotating component to automatically adjust the levelness of the transverse support tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The direct connection design between the forklift tube and a standard forklift eliminates the need for an additional power unit and adapter, allowing this tool to be immediately deployed at any substation site with a forklift. The telescopic structure of the transverse support tube, consisting of an extension tube and fastening bolts, allows for stepless adjustment of the distance between the two brackets. The closed-loop control system formed by the level sensor and rotating components enables real-time level monitoring and automatic correction during the lifting process. The purely mechanical self-balancing system, consisting of a balance compensation component, automatically engages the second gear and double-sided rack when the fine-tuning shifter moves the transverse support tube along the guide rail, driving the rotating shaft to rotate. This, in turn, causes the first gear to move the protruding ring and linkage rod, ultimately controlling the two plugs to move in opposite directions within the counterweight cavity. This fine-tuning capability eliminates the need for repeated forklift operations when installing disconnect switches, significantly improving alignment efficiency and installation accuracy, especially advantageous in space-constrained substation environments.

[0018] 2. A dual shock absorption system consisting of a supporting piston rod, an oil cylinder, and a spring achieves adaptive damping adjustment of the load through a precision throttling orifice at the bottom of the oil cylinder, significantly reducing the vibration and impact of the disconnecting switch during hoisting. When the bracket contacts the disconnecting switch, the supporting piston rod is pressed down, squeezing the oil in the oil cylinder into the oil collection cylinder through the oil pipe. This drives the fine-hole spring piston rod to pull the inclined clamping block along the slide groove through the connecting hollow pipe, achieving automatic initial positioning of the disconnecting switch. Subsequently, the solenoid valve opens, and the oil in the oil collection cylinder flows into the connecting hollow pipe and the oil collection groove through the internal channel of the fine-hole spring piston rod, finally entering each oil chamber end. This pushes the lifting spring piston rod upward, causing the movable card to expand radially from the inclined clamping block, forming a multi-point contact adaptive clamping, so that disconnecting switches of different specifications can obtain the best clamping effect. At the same time, the cylinder drives the crank to swing through the push-pull rod, so that the bracket can produce pitch adjustment within a controllable range, perfectly adapting to various inclined installation surfaces. This two-stage clamping mechanism makes the positioning of the disconnecting switch more precise, the installation process more stable, and the risk of equipment damage significantly reduced. It also enables adaptive clamping of disconnecting switches of different specifications without manual intervention, significantly reducing the number of operators required. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure when the present invention is in use; Figure 3 This is a schematic cross-sectional view of the horizontal tube in this invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic cross-sectional view of the sleeve in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the horizontal tube structure in this invention; Figure 8 This is a schematic diagram of the bracket structure in this invention; Figure 9 This is a schematic cross-sectional view of the oil cylinder in this invention; Figure 10 This is a schematic cross-sectional view of the inclined clamping block in this invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram of the structure at point C.

[0020] In the diagram: 100, forklift connector tube; 101, transverse support tube; 102, rotating component; 103, sleeve; 104, extension tube; 105, fastening bolt; 106, bracket; 107, level sensor; 200, guide rail; 201, fine-tuning shifter; 202, counterweight cavity; 203, plug; 204, linkage rod; 205, protruding ring; 206, rotating shaft; 207, first gear; 208, second gear; 209, double-sided rack; 300. Support piston rod; 301. Oil cylinder; 302. Spring; 303. Oil pipe; 304. Oil collection cylinder; 305. Fine-hole spring piston rod; 306. Connecting empty pipe; 400. Inclined clamp; 401. Slide groove; 402. Movable card; 403. Solenoid valve; 404. Oil collection groove; 405. Oil chamber end; 406. Lifting spring piston rod; 407. Cylinder; 408. Crank; 409. Push-pull rod; 500. Disconnecting switch. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 11This invention provides a technical solution: a hoisting tool for disconnecting switches, including a forklift connecting pipe 100 and a transverse support pipe 101. The forklift connecting pipe 100 is used to connect to a forklift without requiring an additional separately adapted drive component. The transverse support pipe 101 can be located below the crossbeam of the disconnecting switch 500 for transportation. A sleeve 103 is fitted onto the outer surface of the transverse support pipe 101, and a rotating component 102 that can drive the sleeve 103 to rotate is fixedly connected to the top of the forklift connecting pipe 100. Both ends of the transverse support pipe 101 are provided with brackets 106 for supporting the disconnecting switch 500, and both ends of the transverse support pipe 101 are slidably connected with extension pipes 104 for supporting the brackets 106. The brackets 106 are slidably connected to the extension pipes 104. At the top of the extension tube 104, the outer surface of the transverse support tube 101 is provided with fastening bolts 105 for fixing the extension tube 104. A level sensor 107 is fixedly connected to the top of the sleeve 103. The level sensor 107 responds to the tilt state of the transverse support tube 101 and is used to control the rotating component 102 to automatically adjust the level of the transverse support tube 101. The level sensor 107 can detect the level of the transverse support tube 101 to determine whether it is stable when it supports the disconnect switch 500. At the same time, the angle can be adjusted when the disconnect switch 500 is installed on the disconnect switch support. The rotating component 102 has a built-in torque sensor. When abnormal resistance is detected, it automatically reduces the rotation speed and increases the torque to effectively cope with positioning under strong wind or uneven working conditions.

[0023] The system also includes an alignment assistance system, which is one of the core innovations of this invention. The alignment assistance system includes a guide rail 200 disposed inside the sleeve 103, and a fine-tuning shift seat 201 connected to the transverse support tube 101 at the output end of the guide rail 200. The fine-tuning shift seat 201 is fixedly connected to the transverse support tube 101 via a key connection, enabling precise displacement of the transverse support tube 101 along the direction of the guide rail 200. Both ends of the transverse support tube 101 are provided with counterweight chambers 202 for storing liquid, and the two counterweight chambers 202 are interconnected, allowing liquid to flow between the two counterweight chambers 202 to change the liquid level. The weight distribution at both ends of the transverse support tube 101 is adjusted by a balance compensation component inside the transverse support tube 101 to change the liquid in the two counterweight chambers 202. By setting the balance compensation component, the liquid in the counterweight chambers 202 can be changed, thereby changing its gravity distribution in the transverse support tube 101. This prevents one end of the transverse support tube 101 from being overweight and ensures uniform force distribution. By setting the fine-tuning shift seat 201 and the guide rail 200 to cooperate, the position of the transverse support tube 101 can be effectively changed, thereby realizing the position adjustment of the disconnect switch 500. This allows for fine adjustment when installing the disconnect switch 500, and alignment can be performed without operating a forklift.

[0024] Furthermore, the balance compensation component includes plugs 203 respectively disposed inside two counterweight chambers 202, with the liquid in the counterweight chambers 202 stored between the two plugs 203. A linkage rod 204 is connected between the two plugs 203, and a protruding ring 205 is fixedly connected to the outer surface of the linkage rod 204. A first gear 207, which is drivenly connected to the protruding ring 205, is disposed inside the transverse support tube 101. A rotating shaft 206 for supporting the first gear 207 is rotatably connected inside the transverse support tube 101. A double-sided rack 209 is fixedly connected inside the sleeve 103, and one end of the rotating shaft 206 is fixedly connected to the double-sided rack 209. The second gear 208, which meshes with the rack 209, can drive the guide rail 200 to move in the opposite direction while the first gear 207 and the protruding ring 205 are engaged. This causes the liquid to flow in the opposite direction and changes the counterweight of the transverse support tube 101. When the guide rail 200 drives the fine-tuning seat 201 to move, it will cause the second gear 208 to mesh with the double-sided rack 209, thereby driving the rotating shaft 206 to rotate. This causes the first gear 207 to drive the protruding ring 205 to move, forming a mechanical linkage mechanism of rotation angle-center of gravity compensation, which can achieve physical self-balancing without electronic control.

[0025] Through precise control of the balancing compensation components, the liquid distribution in the counterweight chamber 202 can be adjusted in real time, thereby changing its center of gravity distribution in the transverse support tube 101. This design effectively suppresses the situation of excessive weight on one side of the transverse support tube 101, ensuring that the entire hoisting system is subjected to uniform force, and significantly improving operational stability and safety. At the same time, through the precise cooperation between the guide rail 200 and the fine-tuning shift seat 201, the position of the transverse support tube 101 can be steplessly adjusted within a certain range, achieving millimeter-level precise positioning of the disconnector switch 500. This fine-tuning capability eliminates the need for repeated forklift operations when installing the disconnector switch 500, greatly improving alignment efficiency and installation accuracy, especially with significant advantages in space-constrained substation environments.

[0026] The ingenuity of this mechanical linkage mechanism lies in the fact that when the transverse support tube 101 moves in a certain direction, the plug 203 inside it automatically moves in the opposite direction, causing the liquid in the counterweight chamber 202 to flow in the opposite direction to the movement of the transverse support tube 101. For example, when the transverse support tube 101 moves to the right, the plug 203 automatically moves to the left, causing more liquid to flow to the left counterweight chamber 202, thereby counteracting the increased torque on the right and maintaining the system balance.

[0027] Specifically, the level sensor 107 can detect the levelness of the disconnector switch 500. When it detects that the levelness is not level, the height of both ends of the transverse support tube 101 can be adjusted by operating the rotating part 102 to adjust the levelness. Alternatively, the guide rail 200 can be activated to cause the fine-tuning shifter 201 to pull the transverse support tube 101 to move inside the sleeve 103, thereby changing the transverse position of the disconnector switch 500. When the fine-tuning shifter 201 pulls the transverse support tube 101 to move, the force on the left and right ends of the transverse support tube 101 will be uneven. When the transverse support tube 101 moves, the second gear 208 will mesh with the double-sided rack 209 to drive the rotating shaft 206 to rotate, thereby causing the first gear 207 to drive the linkage rod 204 to move. This causes the plug 203 inside the transverse support tube 101 to move in the opposite direction when the transverse support tube 101 moves in one direction, thereby allowing the oil in the counterweight chamber 202 to move in the opposite direction to balance the uneven force on the transverse support tube 101.

[0028] In summary, the direct connection design between the forklift pipe 100 and a standard forklift eliminates the need for an additional power unit and adapter, allowing this tool to be immediately deployed at any substation site with a forklift. The telescopic structure formed by the extension pipe 104 and fastening bolts 105 of the transverse support pipe 101 allows for stepless adjustment of the distance between the two brackets 106. The closed-loop control system formed by the level sensor 107 and the rotating component 102 enables real-time level monitoring and automatic correction during the lifting process. The purely mechanical self-balancing system composed of the balance compensation components... When the fine-tuning shifter 201 moves the transverse support tube 101 along the guide rail 200, the second gear 208 automatically meshes with the double-sided rack 209, driving the rotating shaft 206 to rotate. This causes the first gear 207 to move the protruding ring 205 and the linkage rod 204, ultimately controlling the two plugs 203 to move in opposite directions within the counterweight cavity 202. This fine-tuning capability eliminates the need for repeated forklift operations when installing the disconnect switch 500, significantly improving alignment efficiency and installation accuracy, especially in space-constrained substation environments where its advantages are significant.

[0029] Example 2: Please refer to Figure 1 - Figure 11The present invention also provides a technical solution, which further provides a flexible positioning system that significantly improves the stability and safety of the hoisting process of the disconnector switch 500. The technical solution differs from Embodiment 1 as follows: a disconnector switch hoisting tool, further comprising a flexible positioning system, which consists of multiple supporting piston rods 300 disposed above a bracket 106. Typically, each bracket 106 is equipped with 3-4 supporting piston rods 300, arranged in a triangular or quadrilateral shape. Multiple oil cylinders 301 are fixedly connected inside the bracket 106 for sliding connection to the piston ends of the supporting piston rods 300. Springs 302 are fixedly connected inside the oil cylinders 301 and fixedly connected to the piston ends of the supporting piston rods 300. The invention also includes a slanted clamping block 400 for clamping the disconnector switch 500. A positioning component for driving the slanted clamping block 400 to move is disposed above the bracket 106. Multiple deployable movable cards 402 are disposed on the inclined surface of the slanted clamping block 400, which are normally stored inside the slanted clamping block 400. The inclined clamp 400 can be unfolded during use to change the contact surface shape of the inclined clamp 400, so that it can better fit the crossbeam of the disconnect switch 500 of different specifications, greatly improving the support stability. Multiple movable cards 402 can be unfolded to change the inclined surface state of the inclined clamp 400, so that the inclined surface of the inclined clamp 400 deforms and improves the support stability of the disconnect switch 500. The inclined clamp 400 is equipped with a clamping component that operates the unfolding of multiple movable cards 402. The piston rod 300 and the spring 302 form a series shock absorption system. At the same time, the bottom of the oil cylinder 301 is designed with a throttling hole. The greater the load, the faster the liquid flow rate, and the damping force is automatically enhanced. The inclined clamp 400 can assist in supporting the piston rod 300 to move, so that it clamps the two sides of the disconnect switch 500 crossbeam and wraps around it for support, improving the stability of moving the disconnect switch 500.

[0030] Furthermore, the positioning component includes an oil conduit 304 fixedly connected to the top of the bracket 106, and the oil conduit 304 is connected to the bottom of the oil cylinder 301 through an oil pipe 303. One end of the oil conduit 304 is slidably connected to a fine-hole spring piston rod 305 adapted thereto. One end of the fine-hole spring piston rod 305 is fixedly connected to a connecting tube 306 for pulling the inclined clamping block 400 to move. The top of the bracket 106 is provided with a sliding groove 401 for the inclined clamping block 400 to slide. The oil conduit 304 forms a pressure sharing chamber with the oil cylinder 301 through the oil pipe 303, so that when the support piston rod 300 is under force, it drives the connecting tube 306 to move, thereby causing the inclined clamping block 400 to clamp the disconnecting switch 500.

[0031] Furthermore, the clamping assembly includes multiple oil cavity ends 405 formed inside the inclined clamping block 400, and the top of each of the multiple oil cavity ends 405 is slidably connected to a matching lifting spring piston rod 406. The top of the lifting spring piston rod 406 is rotatably connected to the bottom of the movable card 402. The internal structure of the fine-hole spring piston rod 305 is hollow and communicates with the connecting empty pipe 306. The interior of the inclined clamping block 400 is provided with an oil collection groove 404 communicating with the multiple oil cavity ends 405. One end of the connecting empty pipe 306 communicates with the oil collection groove 404 to supply oil. A solenoid valve 403 for controlling the opening and closing of its hollow interior is fixedly connected to the outer surface of the plug rod 305. By setting the solenoid valve 403, the interior of the fine-hole spring piston rod 305 can be blocked, so that the operation of the movable card 402 and the inclined clamp 400 is controlled by the solenoid valve 403. This means that when the oil in the oil collection cylinder 304 flows into the connecting empty pipe 306 through the fine-hole spring piston rod 305, the fine-hole spring piston rod 305 inside will reset a certain distance, thereby causing the inclined clamp 400 to retract and reset, which in turn facilitates the drive of the movable card 402 to unfold and support the isolating switch 500.

[0032] Furthermore, a cylinder 407 is rotatably connected to one end of the extension tube 104, and a crank 408 rotatably connected to the extension tube 104 is rotatably connected to the bottom of the bracket 106. A push-pull rod 409 rotatably connected inside the crank 408 is provided at the output end of the cylinder 407. By setting the cylinder 407, the crank 408 can be tilted, thereby pulling the bracket 106 to move and changing the position of the disconnect switch 500. This provides the disconnect switch 500 with an additional degree of orientation adjustment, increasing its flexibility. Through the extension and retraction of the cylinder 407, the crank 408 can be driven to swing, thereby causing the bracket 106 to produce pitch movement within a certain range. This design provides the disconnect switch 500 with additional orientation adjustment freedom, enabling it to adapt to mounting surfaces with different tilt angles, significantly improving the system's flexibility and applicability.

[0033] Specifically, the forklift is then used to position the transverse support tube 101 below the top crossbeam of the disconnector switch 500. The transverse support tube 101 is then moved upwards, causing the bracket 106 to support the bottom of the disconnector switch 500 crossbeam. During this process, multiple support piston rods 300 at the top of the bracket 106 will first support the disconnector switch 500. The support piston rods 300 will then be forced downwards, causing their piston ends to move inside the oil cylinder 301. This forces the oil inside the oil cylinder 301 to flow through the oil pipe 303 into the oil collection cylinder 304. This pressure causes the fine-hole spring piston rod 305 to drive the inclined clamping block 400 to move through the connecting empty pipe 306. The crossbeam clamps both sides of the disconnect switch 500 to lock it in place. After the supporting piston rod 300 and the inclined clamping block 400 stop operating, the solenoid valve 403 is opened to allow some oil in the oil collection cylinder 304 to flow into the connecting empty pipe 306. Finally, the oil will enter the multiple oil chamber ends 405 through the oil collection groove 404, thereby pushing the lifting spring piston rod 406 to move upward, which in turn causes the movable card 402 to unfold on the inclined surface of the inclined clamping block 400, thereby squeezing the disconnect switch 500. During this process, the leakage of oil in the oil collection cylinder 304 will cause the inclined clamping block 400 to retract a certain distance, allowing the movable card 402 to unfold smoothly.

[0034] In summary, the flexible connection positioning system provided in Embodiment 2 of this invention achieves a revolutionary upgrade in the hoisting process of the disconnector switch 500 through precise hydraulic linkage and mechanical structure coordination: the dual shock absorption system composed of the supporting piston rod 300, the oil cylinder 301, and the spring 302 achieves load adaptive damping adjustment through the precision throttling orifice at the bottom of the oil cylinder 301, significantly reducing the vibration and impact of the disconnector switch 500 during hoisting; when the bracket 106 contacts the disconnector switch 500, the supporting piston rod 300 is pressed down, squeezing the oil in the oil cylinder 301 into the oil collection cylinder 304 through the oil pipe 303, driving the fine-hole spring piston rod 305 to pull the inclined clamping block 40 through the connecting empty pipe 306. The switch 500 moves along the slide 401, achieving automatic initial positioning. Subsequently, the solenoid valve 403 opens, allowing oil from the oil collection cylinder 304 to flow through the internal channel of the fine-hole spring piston rod 305 into the connecting pipe 306 and the oil collection groove 404, ultimately entering each oil chamber end 405. This pushes the lifting spring piston rod 406 upward, causing the movable card 402 to radially unfold from the inclined surface of the inclined clamping block 400, forming a multi-point contact adaptive clamping, ensuring optimal clamping for different specifications of disconnect switches 500. Simultaneously, the cylinder 407 drives the crank 408 to swing via the push-pull rod 409, allowing the bracket 106 to perform controllable pitch adjustment, perfectly adapting to various inclined installation surfaces. This two-stage clamping mechanism makes the positioning of the disconnect switch 500 more precise, the installation process more stable, and the risk of equipment damage significantly reduced. Furthermore, it achieves adaptive clamping of different specifications of disconnect switches 500 without manual intervention, significantly reducing the number of operators required. In the hoisting operation of high-voltage disconnect switches, this system effectively solves the core pain points of traditional methods, such as large sway of the disconnect switch 500, difficulty in positioning, and mismatch of contact surfaces, greatly improving the safety and efficiency of the hoisting operation.

[0035] Working principle: First, the operator connects and fixes the forklift pipe 100 to the forklift fork carriage; then, the operator adjusts the extension length of the extension pipe 104 so that the distance between the two brackets 106 matches the width of the base of the disconnect switch 500, and locks it with the fastening bolt 105; then, the operator operates the forklift to precisely move the transverse support pipe 101 to the position directly below the top crossbeam of the disconnect switch 500.

[0036] Subsequently, the forklift is used to lift the forklift pipe 100, causing the bracket 106 to gradually approach and eventually support the bottom of the disconnector switch 500's crossbeam. During this process, multiple support piston rods 300 on the top of the bracket 106 first contact the disconnector switch 500. As the pressure increases, the support piston rods 300 are forced downwards, and their piston ends move downwards inside the oil cylinder 301, squeezing the hydraulic oil inside the oil cylinder 301 into the oil collection cylinder 304 through the oil pipe 303. After the hydraulic oil flows into the oil collection cylinder 304, it pushes the fine-hole spring piston rod 305 to move outwards, pulling the inclined clamping block 400 inwards along the slide groove 401 through the connecting empty pipe 306, so that the two inclined clamping blocks 400 gradually clamp the two sides of the disconnector switch 500's crossbeam, forming a preliminary locking state.

[0037] After the supporting piston rod 300 and the inclined clamping block 400 are initially positioned, the control system activates the solenoid valve 403 to open the flow channel inside the fine-hole spring piston rod 305. At this time, some hydraulic oil in the oil collection cylinder 304 flows into the fine-hole spring piston rod 305 through the solenoid valve 403, enters the oil collection groove 404 through the connecting empty pipe 306, and is finally distributed to each oil chamber end 405. After the hydraulic oil enters the oil chamber end 405, it pushes the lifting spring piston rod 406 to move upward, and through the lever action, the movable card 402 is radially unfolded along the inclined surface of the inclined clamping block 400, forming a multi-point contact tight wrap around the isolating switch 500. During this process, the leakage of hydraulic oil in the oil collection cylinder 304 causes a slight decrease in internal pressure, and the fine-hole spring piston rod 305 retracts slightly under the action of the spring, causing the inclined clamping block 400 to move slightly outward, providing the necessary space for the smooth unfolding of the movable card 402. When the disconnector switch 500 needs to be installed on the disconnector switch support, the level sensor 107 continuously monitors the horizontal status of the transverse support tube 101. If an imbalance is detected, the system automatically controls the rotating component 102 to adjust the rotation angle of the sleeve 103, or activates the guide rail 200 to drive the fine-tuning shift seat 201 to move the transverse support tube 101 to achieve precise positioning. During the process of the fine-tuning shift seat 201 pulling the transverse support tube 101, the second gear 208 meshes with the double-sided rack 209, driving the rotating shaft 206 to rotate, which in turn causes the first gear 207 to drive the protruding ring 205 and the linkage rod 204 to move, ultimately controlling the two plugs 203 to move in opposite directions within the counterweight cavity 202, automatically balancing the center of gravity shift caused by the position movement.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting tool for disconnecting switches, comprising a forklift connecting pipe (100) and a transverse support pipe (101), wherein both ends of the transverse support pipe (101) are provided with brackets (106) for supporting disconnecting switches (500), characterized in that, Also includes: The alignment assist system includes a sleeve (103) fitted on the outer surface of the transverse support tube (101), and a rotating component (102) that can drive the sleeve (103) to rotate is fixedly connected to the top of the forklift tube (100), and a guide rail (200) disposed inside the sleeve (103), and a fine-tuning shift seat (201) connected to the transverse support tube (101) is provided at the output end of the guide rail (200). Both ends of the transverse support tube (101) are provided with counterweight chambers (202) for storing liquid. The two counterweight chambers (202) are interconnected, so that liquid can flow between the two counterweight chambers (202) to change the weight distribution at both ends of the transverse support tube (101). The transverse support tube (101) is provided with a balance compensation component for changing the liquid in the two counterweight chambers (202). The flexible positioning system consists of multiple supporting piston rods (300) disposed above the bracket (106), and multiple oil cylinders (301) for sliding connection of the piston ends of the supporting piston rods (300) are fixedly connected inside the bracket (106). It also includes a slanted clamping block (400) for clamping the disconnecting switch (500). A positioning component for driving the slanted clamping block (400) to move is disposed above the bracket (106). Multiple unfoldable movable cards (402) are disposed on the inclined surface of the slanted clamping block (400), and a clamping component for operating the unfolding of the multiple movable cards (402) is disposed inside the slanted clamping block (400).

2. An isolator hoisting tool according to claim 1, characterised in that: The balance compensation component includes plugs (203) respectively disposed inside two counterweight chambers (202), and the liquid in the counterweight chambers (202) is stored between the two plugs (203). A linkage rod (204) is connected between the two plugs (203). A protruding ring (205) is fixedly connected to the outer surface of the linkage rod (204). A first gear (207) is provided inside the transverse support tube (101) and is drivenly connected to the protruding ring (205).

3. An isolator hoisting tool according to claim 2, characterised in that: The transverse support tube (101) is rotatably connected to a shaft (206) for supporting the first gear (207), the sleeve (103) is fixedly connected to a double-sided rack (209), and one end of the shaft (206) is fixedly connected to a second gear (208) that meshes with the double-sided rack (209).

4. An isolator hoisting tool according to claim 1, characterized in that: The positioning component includes an oil collection cylinder (304) fixedly connected to the top of the bracket (106), and the oil collection cylinder (304) is connected to the bottom of the oil cylinder (301) through an oil pipe (303). One end of the oil collection cylinder (304) is slidably connected to a fine-hole spring piston rod (305) adapted thereto. One end of the fine-hole spring piston rod (305) is fixedly connected to a connecting hollow pipe (306) for moving the inclined clamping block (400). The top of the bracket (106) is provided with a sliding groove (401) for the inclined clamping block (400) to slide.

5. An isolator hoisting tool according to claim 4, characterised in that: The clamping assembly includes multiple oil chamber ends (405) opened inside the inclined clamping block (400), and the top of each of the multiple oil chamber ends (405) is slidably connected to a matching lifting spring piston rod (406), and the top of the lifting spring piston rod (406) is rotatably connected to the bottom of the movable card (402).

6. An isolator hoisting tool according to claim 5, characterised in that: The internal structure of the fine-hole spring piston rod (305) is hollow and connected to the connecting hollow pipe (306). The interior of the inclined clamp (400) is provided with an oil collection groove (404) that is connected to multiple oil chamber ends (405). One end of the connecting hollow pipe (306) is connected to the oil collection groove (404) to supply oil. The outer surface of the fine-hole spring piston rod (305) is fixedly connected with a solenoid valve (403) for controlling the opening and closing of its hollow interior.

7. An isolator hoisting tool according to claim 1, characterized in that: The oil cylinder (301) is internally fixedly connected to a spring (302) which is fixedly connected to the piston end of the supporting piston rod (300).

8. An isolator hoisting tool according to claim 1, characterized in that: Both ends of the transverse support tube (101) are slidably connected to extension tubes (104) for supporting brackets (106), and the outer surface of the transverse support tube (101) is provided with fastening bolts (105) for fixing the extension tubes (104).

9. An isolator hoisting tool according to claim 8, characterised in that: One end of the extension tube (104) is rotatably connected to a cylinder (407), the bottom of the bracket (106) is rotatably connected to a crank (408) rotatably connected to the extension tube (104), and the output end of the cylinder (407) is provided with a push-pull rod (409) rotatably connected to the inside of the crank (408).

10. An isolator hoisting tool according to claim 1, characterized in that: A level sensor (107) is fixedly connected to the top of the sleeve (103). The level sensor (107) responds to the tilt state of the transverse support tube (101) and is used to control the rotating component (102) to automatically adjust the level of the transverse support tube (101).

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