A power grid security assurance operation uses a cleaning device

Abstract

The application discloses a kind of power grid security guarantee maintenance and use cleaning device, it is related to power grid security guarantee equipment technology.The present application includes the interval frame being arranged on several cables, each cable is provided with cleaning chamber, further includes: mobile unit, it is arranged in cleaning chamber, including moving assembly, transmission assembly and over-arch component;Crushing unit, it is arranged in cleaning chamber, including crushing assembly and blowing assembly;Connecting seat, it is arranged on cleaning chamber, connecting seat is provided with the connecting component for the mutual connection between cleaning chamber and cleaning chamber.Advantages are that: the present application uses adaptive walking cooperation guiding obstacle-avoiding structure to ensure continuous operation in high altitude, relies on crushing and blowing integration to realize efficient deicing, simultaneously realizes adjustable spacing, mutual pulling anti-falling through linkable connecting component, adapts to multiple types of cables and severe weather conditions, comprehensively improves the safety, efficiency and environmental adaptability of line deicing operation.

Description

Technical Field

[0001] This invention relates to power grid security protection equipment technology, and more particularly to a power grid security protection maintenance and cleaning device. Background Technology

[0002] Power lines are the core infrastructure for ensuring stable power supply from the power grid. Their daily operation and maintenance and disaster prevention directly determine the reliability and safety of power transmission. In low-temperature rain and snow conditions, ice accumulation is easily formed on the surface of power cables, which will significantly increase the line load and cause faults such as conductor sagging, line breakage, and insulator flashover, seriously threatening the safe operation of the power grid. Currently, ice and snow removal operations are mostly carried out by manual pole climbing, which is inefficient, labor-intensive, and poses a high safety risk in high-altitude and low-temperature environments. Therefore, mechanized ice and snow removal equipment has gradually become an important piece of equipment for power operation and maintenance.

[0003] For example, a power line ice and snow removal device and method disclosed in CN119765170B includes an overall frame, an ice-breaking mechanism, a balancing mechanism, an ice-crushing mechanism, and a moving mechanism. The ice-breaking mechanism drives the ice-crushing connecting frame to open and close through gear and rack transmission, and breaks the ice with the help of springs and ice-crushing heads. The ice-crushing mechanism drives the cleaning brush to rotate and sweep away residual ice through gear transmission. The moving mechanism drives the material to move along the cable. The balancing mechanism is used to maintain the stable operation of the device.

[0004] Existing line ice and snow removal devices generally adopt a rigid impact de-icing structure. On the one hand, the rigid impact component makes hard contact with the cable, which can easily scratch the cable's surface protective structure. It cannot adapt to the curved surface of the cable to achieve flexible and uniform de-icing, resulting in insufficient de-icing cleanliness and the risk of cable damage. On the other hand, most devices only support single cable operation and cannot adapt to the need for simultaneous de-icing of multiple split cables. Furthermore, they lack an autonomous obstacle-crossing structure for obstacles such as line spacers, making the operation process prone to interruption and requiring on-site manual assistance. For example, the aforementioned existing technology uses a rigid ice-breaking head combined with a cleaning brush to sweep away ice. The rigid striking structure is prone to damaging the cable sheath and can only clean a single cable, making it unsuitable for simultaneous operation on multiple split cables. Furthermore, the device lacks a barrier-crossing guide structure, making it unable to autonomously climb over line barriers. Moreover, there is no linkage and traction limit structure between multiple devices, making it prone to deviation and slippage under harsh conditions such as strong winds and snow. Its operational stability and adaptability to different scenarios are somewhat limited.

[0005] Therefore, it is urgent to design a power grid security maintenance and cleaning device to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a power grid safety assurance maintenance and cleaning device, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a power grid safety assurance maintenance and cleaning device, comprising a spacer frame installed on several cables, each cable having a cleaning chamber, and further comprising: The mobile unit, located inside the cleaning chamber, includes a moving assembly, a transmission assembly, and a conveyor assembly; The moving component is equipped with several moving wheels that travel on the cable, the transmission component is used to drive the moving wheels to rotate on the cable, and the frame-passing component is used to guide the moving wheels to flip over the spacer frame. The crushing unit, located in the cleaning chamber, includes crushing components and purging components; The crushing assembly is equipped with several crushing chains to break up the ice layer on the cable surface, and the purging assembly is used to remove the ice residue left on the cable surface. A connecting base is provided on the cleaning chamber, and the connecting base is provided with connecting components for connecting the cleaning chambers to each other.

[0008] Preferably, a control room is fixedly installed on the cleaning chamber, a PLC controller is fixedly connected to the control room, a control panel is fixedly connected to the PLC controller, and the control panel and the PLC controller are electrically connected. The cleaning chamber is equipped with a battery compartment, which contains a storage battery that powers the device. The control panel uses a PLC controller to control the start-up, shutdown, and operation status of the moving unit, crushing unit, and connecting components.

[0009] Preferably, the moving component includes a plurality of transmission telescopic rods fixedly installed inside the cleaning chamber, and a first spring telescopic rod is fixedly installed inside the cleaning chamber. Each moving wheel is disposed on a corresponding first spring telescopic rod, and the corresponding first spring telescopic rod pushes the moving wheel to fit tightly against the cable.

[0010] Preferably, the transmission assembly includes a transmission chamber disposed inside the cleaning chamber, a first transmission rod rotatably connected inside the transmission chamber, a second transmission rod rotatably connected inside the transmission chamber, and a first transmission chamber rotatably connected to each of the moving wheels; The first transmission chamber is provided with a second helical gear set. One end of the central shaft of the moving wheel extends into the first transmission chamber, and one end of the corresponding transmission telescopic rod also extends into the first transmission chamber. The central shaft of the moving wheel and the ends of the transmission telescopic rod extending into the first transmission chamber are respectively fixedly installed with meshing helical gears. The two helical gears together constitute the second helical gear set. The first transmission rod is provided with a first worm gear transmission group, and one end of the corresponding transmission telescopic rod extends into the transmission cavity. The first transmission rod is provided with a plurality of worms, and a plurality of worm wheels that mesh with the worms are fixedly installed at the end of the corresponding transmission telescopic rod that extends into the transmission cavity. The worms and worm wheels together constitute the first worm gear transmission group. The cleaning chamber is provided with a third transmission chamber. The first transmission rod and the second transmission rod both pass through the third transmission chamber. A rotating motor is fixedly installed on the third transmission chamber. The drive end of the rotating motor extends into the third transmission chamber and is fixedly connected to one end of the first transmission rod. The first transmission rod and the second transmission rod located in the third transmission chamber are driven by a transmission belt.

[0011] Preferably, the rack assembly includes two telescopic slide rails fixedly installed on the cleaning chamber, each telescopic slide rail is slidably connected to an electric push rod, and a return spring is provided between each telescopic slide rail and the electric push rod; Each of the electric push rod drive ends is fixedly installed with a guide block. The two guide blocks have an arc-shaped fitting groove on the side facing the cable. The two guide blocks are arranged opposite each other and together enclose a clamping channel that fits the outer wall of the cable. The end of the two guide blocks away from the cleaning chamber is set as an outwardly expanding inclined guide head.

[0012] Preferably, the crushing assembly includes a crushing wheel disposed on a corresponding first spring telescopic rod, the crushing wheel having a plurality of first threaded holes, each end of the crushing chain being fixedly installed with a threaded head that mates with the first threaded hole, and the crushing wheel being provided with a transmission mechanism; The crushing chain is composed of multiple metal chain links that are hinged and connected in series. A flexible hammer is set at the end of the crushing chain away from the threaded head. The crushing chain is in a flexible, suspended shape. When the crushing wheel rotates, it can drive the crushing chain to swing centrifugally and impact the ice layer of the cable.

[0013] Preferably, the transmission mechanism includes a second transmission chamber rotatably connected to each crushing wheel, a third helical gear set is provided in the second transmission chamber, one end of the central shaft of the crushing wheel extends into the second transmission chamber, and one end of the corresponding transmission telescopic rod extends into the second transmission chamber. The central shaft of the crushing wheel and the end of the transmission telescopic rod extending into the second transmission chamber are respectively fixedly installed with meshing helical gears, and the two helical gears together constitute the third helical gear set. The second transmission rod is provided with a first helical gear set, and one end of the corresponding transmission telescopic rod extends into the transmission cavity. The second transmission rod and the end of the corresponding transmission telescopic rod extending into the transmission cavity are respectively fixedly installed with mutually meshing helical gears, and the two helical gears together constitute the first helical gear set.

[0014] Preferably, the purging assembly includes a purging chamber located within the cleaning chamber, a blower is installed inside the purging chamber, the blower outlet is sealed and connected to an air supply pipe, and a plurality of nozzles are installed on the air supply pipe.

[0015] Preferably, the connecting component includes a connecting block disposed on a connecting seat, a first adjusting tube fixedly installed on the connecting block, a second adjusting tube slidably connected to the first adjusting tube, a third adjusting tube slidably connected to the second adjusting tube, and a corresponding connecting block fixedly installed at one end of the third adjusting tube. A partition is fixedly installed on the second adjusting tube. Several second spring telescopic rods are fixedly installed on both sides of the partition. Two connecting frames are slidably connected inside the second adjusting tube. Each connecting frame is fixedly connected to a corresponding number of second spring telescopic rods. A sliding groove is opened on the second adjusting tube. Each connecting frame is fixedly installed with a handle through the corresponding sliding groove. The handle is used to move the connecting frame to slide on the second adjusting tube. Several adjusting heads are fixedly installed on both of the connecting brackets. Several adjusting holes are opened on both the third adjusting tube and the second adjusting tube. The adjusting heads are inserted and connected to the adjusting holes. The connecting seat has a second threaded hole, the connecting block has a through hole, a bearing is installed in the through hole, the connecting seat has a connecting shaft, the connecting shaft has an external thread that mates with the second threaded hole, the connecting shaft passes through the connecting seat and the through hole, and the first adjusting tube has a fine-tuning mechanism.

[0016] Preferably, the fine-tuning mechanism includes a third threaded hole opened on the first adjusting tube, a threaded rod threaded into the third threaded hole, one end of the threaded rod being rotatably connected inside the first adjusting tube, a rotating rod being rotatably connected to the first adjusting tube, and a hexagonal head being fixedly installed on the exposed end of the rotating rod; A second worm gear transmission assembly is provided on the rotating rod. The second worm gear transmission assembly includes a worm and a worm wheel. The worm is mounted on the rotating rod, and a worm wheel that meshes with the worm is mounted on the threaded rod.

[0017] This invention provides a power grid safety assurance maintenance and cleaning device. It has the following beneficial effects: 1. When performing power grid protection cleaning, this cleaning device uses the first spring telescopic rod of the moving component to adaptively push the moving wheel, ensuring that it always fits tightly against the outer wall of the cable and guarantees the adhesion of the movement; the transmission component stably transmits the walking power, and with the guide block inclined surface of the overpass component to lift and guide, it can smoothly cross the line spacer without the need for manual pole climbing assistance, which greatly improves the continuity and safety of high-altitude de-icing operations.

[0018] 2. When cleaning the power grid, the transmission mechanism drives the crushing wheel to centrifugally swing and break the ice layer. The hinged flexible chain body adapts to the curved surface of the cable to prevent cable scratches. The threaded structure makes it easy to replace. After crushing, the blowing component sprays air to remove ice slag and accumulated water, preventing residual ice from re-freezing. The ice breaking and slag removal are integrated and coordinated, reducing the number of times the equipment goes back and forth, and effectively improving the de-icing cleanliness and overall operation efficiency.

[0019] 3. When performing power grid maintenance cleaning, this cleaning device can connect and link multiple cleaning chambers through the connecting base and connecting components, adapting to simultaneous de-icing of multiple split cables; the multi-stage regulating tube, together with the worm gear fine-tuning mechanism, can flexibly adjust the spacing to adapt to different line spacing conditions; multiple cleaning chambers rely on the connecting components to form a mutual pulling and limiting structure, which can stably constrain all cleaning chambers to the cable, resist the impact of severe weather such as strong winds and snow accumulation, and prevent the device from slipping due to excessive wind and snow. With the spring locking structure, the operation is convenient, and the device can be flexibly combined and disassembled, greatly improving the stability of operation in harsh environments and the adaptability to various line maintenance scenarios.

[0020] In summary, this invention employs an adaptive walking and guiding obstacle-crossing structure to ensure continuous high-altitude operations, relies on integrated crushing and blowing to achieve efficient de-icing, and utilizes interconnected components to achieve adjustable spacing and mutual pulling to prevent detachment. It is adaptable to various types of cables and harsh working conditions such as wind and snow, comprehensively improving the safety, efficiency, and environmental adaptability of line de-icing operations.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a power grid safety assurance maintenance and cleaning device proposed in this invention; Figure 2 for Figure 1 A schematic diagram of the structure after rotation at a certain angle; Figure 3 for Figure 1 Schematic diagram of the structure of the cleaning chamber and connecting components; Figure 4 for Figure 3 A schematic diagram of the structure after rotation at a certain angle; Figure 5 for Figure 3 A schematic diagram of the structure with the connecting components removed; Figure 6 for Figure 5 Schematic diagram of the purge chamber in the cleaning room; Figure 7 for Figure 6 Schematic diagram of the purging assembly; Figure 8 for Figure 5 A schematic diagram of the structure of the transmission cavity in the cleaning chamber; Figure 9 for Figure 8 A schematic diagram of the structure of the first and second transmission rods; Figure 10 for Figure 8 Schematic diagram of the structure of the moving wheel and the crushing wheel; Figure 11 for Figure 8 Schematic diagram of the internal structure of the first and second transmission chambers; Figure 12 for Figure 3 A schematic diagram of the structure of the connecting component; Figure 13 for Figure 12 A schematic diagram of the internal structure of the first, second, and third regulating pipes.

[0023] In the diagram: 1. Cable; 2. Spacer; 3. Cleaning chamber; 4. Transmission telescopic rod; 5. First transmission chamber; 6. Moving wheel; 7. Second transmission chamber; 8. Crushing wheel; 9. First spring telescopic rod; 10. Telescopic slide rail; 11. Electric push rod; 12. Return spring; 13. Fan; 14. Air supply pipe; 15. First transmission rod; 16. First worm gear transmission group; 17. Second transmission rod; 18. First helical gear group; 19. Third transmission chamber; 20. Rotation. 21. Motor; 22. Second helical gear set; 23. Third helical gear set; 24. Crushing chain; 25. Battery; 26. Control room; 27. Connecting seat; 28. Connecting block; 29. ​​First adjusting pipe; 30. Second adjusting pipe; 31. Third adjusting pipe; 32. Second spring telescopic rod; 33. Connecting frame; 34. Adjusting hole; 35. Rotating rod; 36. Threaded rod; 37. Second worm gear transmission set; 38. Connecting shaft; 39. Adjusting head; 30. Guide block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1: Refer to Figures 1-4 ,as well as Figure 8A power grid safety maintenance cleaning device includes a spacer 2 installed on several cables 1, and a cleaning chamber 3 is installed on each cable 1. The spacer 2 is a key tool used in high-voltage and ultra-high-voltage transmission lines. Its main function is to maintain a safe distance between split conductors, prevent conductors from colliding and tangling with each other, suppress vibration, and ensure the safe and stable operation of the line. It is an obstacle that the device needs to cross during its movement. The cleaning chamber 3 serves as the main supporting shell of the device, while also providing waterproof and dustproof protection. It provides a unified installation standard for all functional components, forming an integrated working body. It isolates outdoor rain, snow, and ice from entering the interior, protects the transmission and electrical control components, and extends the service life of the device.

[0026] This cleaning device also includes: The mobile unit, located within the cleaning chamber 3, includes a moving assembly, a transmission assembly, and a conveyor assembly; The mobile component is equipped with several moving wheels 6 that travel on the cable 1. The mobile component is equipped with moving wheels 6 that can travel on the cable 1. The elastic support structure makes the moving wheels 6 stick tightly to the outer wall of the cable 1, ensuring the adhesion of the whole machine and providing a hardware foundation for the device to continuously crawl autonomously along the cable 1. With the help of the transmission component, the long-distance moving de-icing operation of the cable can be completed. The transmission component is used to drive the moving wheel 6 to rotate on the cable 1. The transmission component is arranged inside the cleaning chamber 3 and can output power to drive the moving wheel 6 of the moving component to rotate on the surface of the cable 1, providing power support for the overall movement of the device and ensuring that the cleaning device runs at a uniform speed and stably on the cable 1 without the need for manual dragging assistance. The overpass assembly is used to guide the moving wheel 6 to flip over the spacer 2. The overpass assembly is used to guide the moving wheel 6 to flip over the spacer 2 on the line during the movement of the device, eliminate the obstruction caused by the spacer 2, ensure the continuous operation of the cleaning work, and eliminate the need for manual pole climbing to assist in overcoming obstacles. The crushing unit, located in the cleaning chamber 3, includes crushing components and purging components; The crushing component is equipped with several crushing chains 23 to crush the ice layer on the surface of the cable 1. The crushing component is used to crush the ice layer on the surface of the cable 1, peel off the external ice covering of the cable, eliminate the hidden danger of line ice overload, and provide pre-operation conditions for the purging component to remove ice slag. The purging assembly is used to remove ice residue left on the surface of cable 1. The purging assembly is used to remove ice residue left on the surface of cable 1 after the crushing assembly operation, to prevent fine ice residue from freezing again on the outer wall of the cable. It works with the crushing assembly to achieve a complete de-icing process and improve the cleanliness of the cable. The connecting seat 26 is set on the cleaning chamber 3. The connecting seat 26 is equipped with a connecting component for connecting the cleaning chambers 3 to each other. The connecting component is used to realize the interconnection between multiple cleaning chambers 3, and can link multiple sets of cleaning equipment to work synchronously. At the same time, it forms a pulling limit on each cleaning chamber 3, so that it is stably hung on the cable 1, and is suitable for various line working conditions.

[0027] A control room 25 is fixedly installed on the cleaning chamber 3. A PLC controller is fixedly connected to the control room 25. A control panel is fixedly connected to the PLC controller. The control panel and the PLC controller are electrically connected. The cleaning chamber 3 has a battery compartment, which contains a storage battery 24 that powers the device. The storage battery 24 serves as an independent power source for the device, providing power to the electrical equipment on the device. It can operate independently without an external power source, making it suitable for maintenance of overhead lines in the field where there is no power supply, and greatly improving the device's environmental adaptability. The control panel uses a PLC controller to control the start-up, shutdown, and operation status of the moving unit, crushing unit, and connecting components.

[0028] Example 2: Refer to Figures 5-11 The difference between this embodiment and embodiment one is that the moving component includes several transmission telescopic rods 4 fixedly installed inside the cleaning chamber 3. A first spring telescopic rod 9 is fixedly installed inside the cleaning chamber 3. Each moving wheel 6 is set on the corresponding first spring telescopic rod 9. The corresponding first spring telescopic rod 9 pushes the moving wheel 6 to fit tightly against the cable 1. The transmission telescopic rod 4 is an intermediate rod for power transmission. It has axial extension and retraction margin. One end is connected to the transmission cavity to receive power, and the other end drives the moving wheel 6 and the crushing wheel 8 to rotate through the helical gear set. The transmission telescopic rod 4 can adaptively extend and retract with the radial floating of the moving wheel 6 and the crushing wheel 8, always maintaining the transmission meshing state, avoiding transmission jamming caused by spring floating, and ensuring continuous and stable power transmission. The first spring telescopic rod 9 continuously pushes the moving wheel 6 towards the cable 1 side by the elastic force of the built-in spring, while providing radial floating margin for the moving wheel 6. It can adaptively compensate for the gap caused by the diameter tolerance of the cable 1 and the change in ice thickness, ensuring that the moving wheel 6 and the cable 1 are always in close contact, preventing slippage under ice and snow conditions, and improving the stability of the device operation. The movable wheel 6 is the walking execution component of the device. The wheel surface is in contact with the outer wall of the cable 1. After receiving the transmission power, it rotates and drives the entire device to move along the axial direction of the cable 1. The movable wheel 6 forms a stable frictional contact with the surface of the cable 1, providing sufficient walking traction. With the elastic push of the first spring telescopic rod 9, it can adapt to different ice thicknesses and always maintain walking adhesion. In a further embodiment, the transmission assembly includes a transmission chamber disposed inside the cleaning chamber 3, a first transmission rod 15 rotatably connected inside the transmission chamber, a second transmission rod 17 rotatably connected inside the transmission chamber, and a first transmission chamber 5 rotatably connected to each moving wheel 6. The first transmission rod 15 is the main transmission shaft for walking power. It receives the output power of the rotating motor 20 and distributes the power synchronously to multiple transmission telescopic rods 4 through the first worm gear transmission group 16. This enables a single motor to drive multiple sets of moving wheels 6 to operate synchronously, ensuring that the speed of each moving wheel 6 is consistent, the device moves smoothly without deviation, and simplifies the power system structure. The second transmission rod 17 is the power transmission shaft of the crushing unit. It is linked with the first transmission rod 15 through the transmission belt and transmits power to the first helical gear set 18 to provide rotational power to the crushing wheel 8. This achieves the same source output of walking power and crushing power, ensuring that the traveling speed and ice-breaking speed are automatically matched; no additional drive motor is required. A second helical gear set 21 is installed in the first transmission chamber 5. One end of the central shaft of the moving wheel 6 extends into the first transmission chamber 5, and one end of the corresponding transmission telescopic rod 4 also extends into the first transmission chamber 5. The central shaft of the moving wheel 6 and the ends of the transmission telescopic rod 4 that extend into the first transmission chamber 5 are respectively fixedly installed with meshing helical gears. The two helical gears together constitute the second helical gear set 21. The second helical gear set 21 is used to realize the 90° reversal of power and accurately transmit the rotational power of the transmission telescopic rod 4 to the central shaft of the moving wheel 6, driving the moving wheel 6 to rotate stably and move forward. A first worm gear transmission assembly 16 is provided on the first transmission rod 15. One end of the corresponding transmission telescopic rod 4 extends into the transmission cavity. Several worms are provided on the first transmission rod 15. Several worm wheels that mesh with the worms are fixedly installed at the end of the corresponding transmission telescopic rod 4 that extends into the transmission cavity. The worms and worm wheels together constitute the first worm gear transmission assembly 16. The first worm gear transmission assembly 16 is used to realize the 90° reversal of power transmission and is adapted to the vertical spatial arrangement of the transmission rod and the telescopic rod. At the same time, it has the function of deceleration and torque increase, improving the walking traction of the moving wheel 6 and adapting to heavy-load ice and snow working conditions. The cleaning chamber 3 is provided with a third transmission chamber 19. The first transmission rod 15 and the second transmission rod 17 both pass through the third transmission chamber 19. A rotary motor 20 is fixedly installed on the third transmission chamber 19. The drive end of the rotary motor 20 extends into the third transmission chamber 19 and is fixedly connected to one end of the first transmission rod 15. The first transmission rod 15 and the second transmission rod 17 located in the third transmission chamber 19 are driven by a transmission belt. The third transmission chamber 19 protects the belt drive structure from rain, snow, and ice slag corrosion, reduces belt aging and transmission loss, and improves the reliability of operation under outdoor conditions. The rotating motor 20 is the main power source for the device's walking and crushing operations. It outputs rotational power to drive the first transmission rod 15 to rotate, providing power input for the entire device. The single motor realizes the linkage of multiple mechanisms for walking and ice breaking. The control logic is simple, the failure rate is low, and it is convenient for outdoor operation and maintenance.

[0029] In a further embodiment, the rack assembly includes two telescopic slide rails 10 fixedly installed on the cleaning chamber 3, each telescopic slide rail 10 is slidably connected to an electric push rod 11, and each telescopic slide rail 10 and the electric push rod 11 are provided with a return spring 12. Two telescopic slide rails 10 are used to provide radial sliding guidance for the electric push rod 11 and also serve as the mounting base for the return spring 12. The electric push rod 11 drives the guide block 39 to extend or retract through axial extension and retraction. When the device moves to the spacer 2 position, the electric push rod 11 extends synchronously, pushing the guide block 39 against the spacer 2 to achieve obstacle crossing guidance. It retracts during normal travel to reduce additional frictional resistance and improve walking efficiency. The return spring 12 is used to release elastic force after the obstacle crossing action is completed, driving the electric push rod 11 and the guide block 39 to automatically spring back to their original positions. Each electric push rod 11 has a guide block 39 fixedly installed at its drive end. The two guide blocks 39 have an arc-shaped fitting groove on the side facing the cable 1. The two guide blocks 39 are arranged opposite each other and together form a clamping channel that fits the outer wall of the cable 1. The end of the two guide blocks 39 away from the cleaning chamber 3 is set as an outwardly expanding inclined guide head. The guide block 39 converts the horizontal travel force of the moving wheel 6 into a lifting force through the inclined guide, guiding the moving wheel 6 to smoothly cross the spacer 2 without the need for manual pole climbing assistance, thus improving the continuity of operation. The arc-shaped fitting groove ensures that the device remains centered and does not deviate during the guiding process, and the obstacle crossing process is smooth and without shaking.

[0030] Example 3: Refer to Figures 8-13 The difference between this embodiment and embodiment two is that the crushing component includes a crushing wheel 8 set on the corresponding first spring telescopic rod 9, the crushing wheel 8 is provided with a plurality of first threaded holes, and each crushing chain 23 is fixedly installed with a threaded head that mates with the first threaded hole at its end; The crushing wheel 8 is the mounting and bearing wheel of the crushing chain 23. By rotating, it drives multiple sets of crushing chains 23 to swing centrifugally in sync, so as to break ice in the entire circumference of the cable, with a large ice-breaking coverage area and high efficiency. The crushing chain 23 is composed of multiple metal chain links that are hinged and connected in series. A flexible hammer is set at the end of the crushing chain 23 away from the threaded head. The crushing chain 23 is in a flexible and suspended shape. When the crushing wheel 8 rotates, it can drive the crushing chain 23 to swing centrifugally and impact the ice layer of the cable 1. The flexible hinged structure of the crushing chain 23 can adapt to the curved surface of the cable 1, avoiding rigid impact damage to the cable sheath. It has a high degree of impact fit and good de-icing cleanliness. The threaded connection structure facilitates quick disassembly and replacement, adapts to different ice layer thickness conditions, and has low maintenance costs. In a further embodiment, a transmission mechanism is provided on the crushing wheel 8. The transmission mechanism includes a second transmission chamber 7 rotatably connected to each crushing wheel 8. The second transmission chamber 7 is used to isolate ice slag and water vapor from invading the gear meshing surface, reduce transmission wear, and ensure stable and reliable crushing power transmission. The second transmission chamber 7 is equipped with a third helical gear set 22. One end of the central shaft of the crushing wheel 8 extends into the second transmission chamber 7, and one end of the corresponding transmission telescopic rod 4 extends into the second transmission chamber 7. The ends of the central shaft of the crushing wheel 8 and the transmission telescopic rod 4 that extend into the second transmission chamber 7 are respectively fixedly installed with meshing helical gears. The two helical gears together form the third helical gear set 22. The third helical gear set 22 is used to realize the 90° reversal of power, accurately transmit the rotational power of the transmission telescopic rod 4 to the central shaft of the crushing wheel 8, and drive the crushing wheel 8 to rotate stably and output ice-breaking power. The second transmission rod 17 is provided with a first helical gear set 18, and one end of the corresponding transmission telescopic rod 4 extends into the transmission cavity. The ends of the second transmission rod 17 and the corresponding transmission telescopic rod 4 that extend into the transmission cavity are respectively fixedly installed with meshing helical gears. The two helical gears together constitute the first helical gear set 18. The first helical gear set 18 is used to realize vertical power reversal, adapt to the spatial arrangement of the second transmission rod 17 and the crushing side transmission telescopic rod 4, and ensure stable and efficient transmission of crushing power.

[0031] In a further embodiment, the purging assembly includes a purging chamber opened in the cleaning chamber 3, a blower 13 is provided in the purging chamber, the air outlet of the blower 13 is sealed and connected to an air supply pipe 14, and a plurality of nozzles are provided on the air supply pipe 14. The blower 13 generates high-pressure airflow after being powered on, providing power for the ice slag blowing operation. It outputs a stable high-pressure airflow to thoroughly blow away the broken ice slag and surface melt water from the surface of the cable 1, preventing the residual ice from freezing again and improving the cleanliness and operation effect of de-icing. The air supply pipe 14 is used for airflow transportation and distribution pipeline. One end is sealed and connected to the air outlet of the blower 13. Several blowing nozzles are arranged at intervals on the pipe body to evenly guide the airflow to the circumference of the cable 1, realizing the uniform distribution of airflow and ensuring that the blowing airflow covers all positions around the cable 1, with no dead corners in slag removal and a more thorough de-icing effect.

[0032] In a further embodiment, the connecting component includes a connecting block 27 disposed on the connecting seat 26, a first adjusting tube 28 fixedly installed on the corresponding connecting block 27, a second adjusting tube 29 slidably connected to the first adjusting tube 28, a third adjusting tube 30 slidably connected to the second adjusting tube 29, and a corresponding connecting block 27 fixedly installed at one end of the third adjusting tube 30. The connecting seat 26 is the mounting base for the connecting components. It is fixed to the side wall of the cleaning chamber 3 and has a second threaded hole for locking the connecting block 27 with the connecting shaft 37. It provides a stable connection interface for the linkage docking of multiple sets of cleaning chambers 3, has sufficient connection strength, and can withstand the tensile and limiting load between multiple devices. The connecting block 27 is a transitional connector between the adjusting pipe assembly and the connecting seat 26, realizing the detachable connection between the adjusting pipe assembly and the cleaning chamber 3, which facilitates the disassembly, transportation and on-site assembly of the device. The built-in bearing reduces the rotational friction of the connecting shaft 37, improving the smoothness of operation and the service life of the structure. The first regulating pipe 28, the second regulating pipe 29 and the third regulating pipe 30 are nested and slidably engaged with each other. Together, they form the telescopic regulating body of the connecting component, which can flexibly change the overall length to adapt to the line spacing corresponding to different specifications of cables 1. At the same time, multiple cleaning chambers 3 rely on the three regulating pipes to complete the docking and linkage, pull and limit each other, and stably constrain the cleaning chambers 3 on the cables 1 to resist the impact of wind and snow and prevent the device from slipping. Moreover, the structure is flexible in disassembly and assembly, which greatly improves the adaptability of the equipment to various line maintenance scenarios. A partition is fixedly installed on the second adjusting tube 29. Several second spring telescopic rods 31 are fixedly installed on both sides of the partition. Two connecting frames 32 are slidably connected inside the second adjusting tube 29. Each connecting frame 32 is fixedly connected to several corresponding second spring telescopic rods 31. A sliding groove is opened on the second adjusting tube 29. Each connecting frame 32 is fixedly installed with a handle through the corresponding sliding groove. The handle is used to move the connecting frame 32 to slide on the second adjusting tube 29. The second spring telescopic rod 31 is fixed between the partition and the connecting frame 32. It pushes the connecting frame 32 outward by the spring force, so that the adjusting head 38 can be inserted into the adjusting hole 33 to achieve automatic locking, ensuring that the gear position is firmly positioned and is not easy to disengage under vibration, wind and snow loads, thus improving the connection reliability. When the handle is pressed, it can be compressed and rebounded to achieve quick unlocking and adjustment. The connecting frame 32 is used to synchronously drive multiple sets of adjusting heads 38 to insert or withdraw from the adjusting hole 33 to realize locking and unlocking actions. This structure allows the operator to drive multiple sets of adjusting heads 38 to move synchronously with a single handle, making the operation convenient. Several adjusting heads 38 are fixedly installed on both connecting brackets 32. Several adjusting holes 33 are opened on the third adjusting pipe 30 and the second adjusting pipe 29. The adjusting heads 38 are inserted and connected to the adjusting holes 33. The adjustment hole 33 is inserted into the adjustment head 38 to fix the telescopic length at different levels, providing multiple spacing adjustment levels to adapt to the spacing of multi-split cables of different specifications. The adjustment and positioning are precise and the levels are clear. The connecting seat 26 has a second threaded hole, the connecting block 27 has a through hole, a bearing is installed in the through hole, the connecting seat 26 has a connecting shaft 37, the connecting shaft 37 has an external thread that mates with the second threaded hole, and the connecting shaft 37 passes through the connecting seat 26 and the through hole. The connecting shaft 37 is a locking connector between the connecting block 27 and the connecting seat 26. The rod body is provided with an external thread that is compatible with the second threaded hole of the connecting seat 26. It passes through the through hole of the connecting block 27 to achieve locking and fixation. This structure is easy to assemble and disassemble, has high connection strength, and can withstand the tensile and limiting load between multiple devices.

[0033] In a further embodiment, a fine-tuning mechanism is provided inside the first adjusting tube 28. The fine-tuning mechanism includes a third threaded hole opened on the first adjusting tube 28. A threaded rod 35 is threadedly engaged on the third threaded hole. One end of the threaded rod 35 is rotatably connected inside the first adjusting tube 28. A rotating rod 34 is rotatably connected to the first adjusting tube 28. A hexagonal head is fixedly installed on the exposed end of the rotating rod 34. The threaded rod 35 is threaded into the third threaded hole of the first adjusting tube 28. When it rotates, it generates axial feed, pushing the third adjusting tube 30 to achieve micro-pitch adjustment. The threaded rod 35 converts the rotational motion into linear feed, realizing precise micro-adjustment of the pitch, compensating for the gap error of the coarse adjustment gear, and ensuring that the pitch of multiple sets of devices is accurately matched with the cable 1 wire spacing. The rotating rod 34 is equipped with a hexagonal head, which makes it easy for the operator to use standard tools to rotate and adjust. It smoothly transmits the external operating force to the internal second worm gear transmission group 36 to realize the micro-adjustment power input. A second worm gear transmission assembly 36 is provided on the rotating rod 34. The second worm gear transmission assembly 36 includes a worm and a worm wheel. The worm is set on the rotating rod 34, and a worm wheel that meshes with the worm is set on the threaded rod 35. The second worm gear transmission assembly 36 is used to realize speed reduction and torque increase. The fine adjustment operation is labor-saving and convenient. At the same time, it has the self-locking characteristics of worm wheel and worm. After the adjustment is completed, the position will not move on its own, and the positioning is stable and reliable.

[0034] The specific working principle of this cleaning device is as follows: Before operation, the cleaning chamber 3 is fitted onto the outside of the cable 1 to be cleaned. Relying on the built-in spring force of the first spring telescopic rod 9, the moving wheel 6 is continuously pushed towards the side of the cable 1, so that the wheel surface of the moving wheel 6 is tightly attached to the outer wall of the cable 1, forming the initial walking adhesion. At the same time, it adaptively compensates for the gap between the diameter tolerance of the cable 1 and the initial ice thickness, ensuring that the device is stably mounted and does not loosen. The built-in battery 24 of the device supplies power to all electrical components. The operator inputs the operation command to the PLC controller through the control panel on the control room 25, sets the walking speed, ice breaking speed and other parameters, and completes the state initialization before operation. The whole device can start independently without external power supply, which is suitable for the overhead line scenario in the field where there is no power supply. After the setup is complete, multiple cleaning chambers 3 are connected sequentially to the connecting assembly via the connecting seat 26 to form a synchronous operation structure. The connecting shaft 37 passes through the connecting block 27 and locks itself in the second threaded hole of the connecting seat 26, achieving a rigid connection between the adjusting pipe assembly and the cleaning chamber 3. Multiple sets of cleaning chambers 3 are mutually pulled and limited by the first adjusting pipe 28, the second adjusting pipe 29, and the third adjusting pipe 30, forming a stable overall mounting structure. During installation, the operator moves the handle on the second adjusting pipe 29, causing the connecting frame 32 to slide inward and compressing the second spring telescopic rod 31 to make the adjusting head 38 exit the adjusting hole 33 on the third adjusting pipe 30. At this time, the third adjusting pipe 30 can slide freely, changing the total telescopic length of the third adjusting pipe 30. After adjusting to the target position, the handle is released, and the second spring telescopic rod 31 rebounds and pushes the connecting frame 32, causing the adjusting head 38 to engage with the corresponding adjusting hole 33 to complete the locking. After the initial adjustment is completed, the operator uses a tool to rotate the hexagonal head at the end of the rotating rod 34, causing the rotating rod 34 to rotate. The second worm gear transmission group 36 completes the deceleration and reversal, driving the threaded rod 35 to slowly feed along the axial direction, pushing the third adjusting tube 30 to produce a small displacement, realizing high-precision fine adjustment of the spacing. The second worm gear transmission group 36 has a self-locking characteristic, so the spacing will not move on its own after the adjustment is completed. It can accurately match the actual line spacing of the cable 1, ensuring that multiple sets of devices move synchronously without jamming. After the device is stably installed on the cable 1, the rotating motor 20 is started, driving the first transmission rod 15 to rotate. The first transmission rod 15 completes a 90° reversal and deceleration and torque increase through the first worm gear transmission group 16 on it, and transmits the power synchronously to multiple transmission telescopic rods 4. The other end of the transmission telescopic rod 4 extends into the first transmission chamber 5, and completes another 90° reversal through the second helical gear group 21. Finally, the rotational power is transmitted to the central shaft of the moving wheel 6, driving the moving wheel 6 to roll along the surface of the cable 1, and driving the entire device to move at a constant speed along the axial direction of the cable 1. During the movement, the first spring telescopic rod 9 always maintains an elastic pushing state, which can adaptively extend and retract according to the thickness of the ice layer on the surface of the cable 1, continuously ensuring the contact pressure between the moving wheel 6 and the cable 1, avoiding slippage when walking in ice and snow conditions, and ensuring that the device moves smoothly and has sufficient traction. While traveling on cable 1, the ice blocks on cable 1 are broken simultaneously. As the first transmission rod 15 rotates, the second transmission rod 17 is driven to rotate synchronously through the transmission belt in the third transmission chamber 19. The second transmission rod 17 completes the reversal through the first helical gear set 18 and transmits the power to the transmission telescopic rod 4 on the breaking side. The other end of the transmission telescopic rod 4 extends into the second transmission chamber 7 and drives the crushing wheel 8 to rotate at high speed after being reversed by the third helical gear set 22. When the crushing wheel 8 rotates, the multiple crushing chains 23 arranged in a ring generate centrifugal force with the wheel body, and expand outward in a radial pattern and swing continuously. The flexible hammer head at the end continuously strikes the ice layer on the surface of the cable 1, breaking and peeling off the hard ice layer by layer. The crushing chain 23 adopts a flexible structure with multiple hinges, which can adapt to the curvature of the cable 1. When striking, it makes flexible contact with the cable sheath, avoiding rigid impact damage to the cable protective layer. The crushing chain 23 is connected to the first threaded hole on the crushing wheel 8 through the threaded head. Different lengths of chain body can be quickly replaced according to the ice thickness to adapt to different degrees of icing conditions. While breaking ice on the surface of cable 1, the blower 13 generates high-pressure airflow after being powered on. The airflow is evenly distributed to various nozzles on the pipe body through the air delivery pipe 14 and sprayed directionally along the circumference of cable 1. The high-pressure airflow can completely blow away the fine ice fragments and surface melt water remaining after breaking the ice from the surface of cable 1, preventing the ice fragments from remaining in the gaps of the cable and freezing again. This forms a coordinated operation process with the breaking component in front, which first breaks the ice and then cleans the debris. The entire de-icing process can be completed in one pass, without the need for equipment to go back and forth repeatedly, thus improving the cleanliness of de-icing and the overall operation efficiency. When the device moves to the spacer 2 position, the electric push rod 11 extends forward along the telescopic slide rail 10, pushing the two guide blocks 39 to surround and clamp the cable 1. The outwardly expanding inclined guide head at the front end of the guide block 39 first contacts the end face of the spacer 2, converting the horizontal moving force of the device into an upward lifting force, guiding the moving wheel 6 to gradually lift and smoothly flip over the spacer 2 along the inclined plane. During obstacle crossing, the telescopic slide rail 10 provides precise radial sliding guidance for the electric push rod 11, and the return spring 12 is compressed synchronously to buffer the impact of obstacle crossing. After the moving wheel 6 completely passes the spacer 2, the electric push rod 11 retracts, and the return spring 12 releases its elastic force to drive the electric push rod 11 and the guide block 39 to automatically spring back and reset. The device resumes normal walking state, and no manual pole climbing assistance is required throughout the process, ensuring continuous and uninterrupted de-icing operations.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A power grid safety maintenance and cleaning device, comprising a spacer (2) mounted on a plurality of cables (1), each cable (1) having a cleaning chamber (3), characterized in that, Also includes: The mobile unit, located in the cleaning chamber (3), includes a mobile assembly, a transmission assembly, and a rack assembly; The moving component is provided with several moving wheels (6) that travel on the cable (1), the transmission component is used to drive the moving wheels (6) to rotate on the cable (1), and the frame-passing component is used to guide the moving wheels (6) to flip over the spacer (2). The crushing unit is located in the cleaning chamber (3) and includes a crushing component and a purging component; The crushing assembly is equipped with several crushing chains (23) to crush the ice layer on the surface of the cable (1), and the purging assembly is used to remove the ice residue left on the surface of the cable (1). A connecting seat (26) is provided on the cleaning chamber (3), and the connecting seat (26) is provided with a connecting component for connecting the cleaning chamber (3) to each other.

2. The power grid safety assurance maintenance and cleaning device according to claim 1, characterized in that, A control room (25) is fixedly installed on the cleaning chamber (3), a PLC controller is fixedly connected to the control room (25), a control panel is fixedly connected to the PLC controller, and the control panel and the PLC controller are electrically connected. The cleaning chamber (3) is equipped with a battery compartment, which contains a storage battery (24) that supplies power to the device. The control panel uses a PLC controller to control the start-up, shutdown, and operation status of the moving unit, crushing unit, and connecting components.

3. The power grid safety assurance maintenance and cleaning device according to claim 1, characterized in that, The moving component includes several transmission telescopic rods (4) fixedly installed inside the cleaning chamber (3). A first spring telescopic rod (9) is fixedly installed inside the cleaning chamber (3). Each moving wheel (6) is set on the corresponding first spring telescopic rod (9). The corresponding first spring telescopic rod (9) pushes the moving wheel (6) to fit tightly against the cable (1).

4. The power grid safety assurance maintenance and cleaning device according to claim 3, characterized in that, The transmission assembly includes a transmission chamber disposed inside the cleaning chamber (3), a first transmission rod (15) is rotatably connected inside the transmission chamber, a second transmission rod (17) is rotatably connected inside the transmission chamber, and a first transmission chamber (5) is rotatably connected to each of the moving wheels (6). The first transmission chamber (5) is provided with a second helical gear set (21). One end of the central shaft of the moving wheel (6) extends into the first transmission chamber (5), and one end of the corresponding transmission telescopic rod (4) also extends into the first transmission chamber (5). The central shaft of the moving wheel (6) and the end of the transmission telescopic rod (4) extending into the first transmission chamber (5) are respectively fixedly installed with meshing helical gears. The two helical gears together constitute the second helical gear set (21). The first transmission rod (15) is provided with a first worm gear transmission group (16), and one end of the corresponding transmission telescopic rod (4) extends into the transmission cavity. The first transmission rod (15) is provided with a plurality of worms, and a plurality of worm wheels that mesh with the worms are fixedly installed at one end of the corresponding transmission telescopic rod (4) that extends into the transmission cavity. The worms and worm wheels together constitute the first worm gear transmission group (16). The cleaning chamber (3) is provided with a third transmission chamber (19). The first transmission rod (15) and the second transmission rod (17) both pass through the third transmission chamber (19). A rotating motor (20) is fixedly installed on the third transmission chamber (19). The driving end of the rotating motor (20) extends into the third transmission chamber (19) and is fixedly connected to one end of the first transmission rod (15). The first transmission rod (15) and the second transmission rod (17) located in the third transmission chamber (19) are driven by a transmission belt.

5. The power grid safety assurance maintenance and cleaning device according to claim 4, characterized in that, The rack assembly includes two telescopic slide rails (10) fixedly installed on the cleaning chamber (3). Each telescopic slide rail (10) is slidably connected to an electric push rod (11), and a return spring (12) is provided between each telescopic slide rail (10) and the electric push rod (11). Each of the electric push rods (11) has a guide block (39) fixedly installed at its drive end. The two guide blocks (39) have an arc-shaped fitting groove on the side facing the cable (1). The two guide blocks (39) are arranged opposite to each other and together enclose a clamping channel that fits the outer wall of the cable (1). The end of the two guide blocks (39) away from the cleaning chamber (3) is set as an outwardly expanding inclined guide head.

6. The power grid safety assurance maintenance and cleaning device according to claim 5, characterized in that, The crushing assembly includes a crushing wheel (8) mounted on a corresponding first spring telescopic rod (9). The crushing wheel (8) has a plurality of first threaded holes. Each end of the crushing chain (23) is fixedly mounted with a threaded head that mates with the first threaded hole. The crushing wheel (8) is provided with a transmission mechanism. The crushing chain (23) is made of multiple metal chain links that are hinged and connected in series. A flexible hammer is provided at the end of the crushing chain (23) away from the threaded head. The crushing chain (23) is in a flexible hanging shape. When the crushing wheel (8) rotates, it can drive the crushing chain (23) to swing centrifugally and strike the ice layer of the cable (1).

7. A power grid safety assurance maintenance and cleaning device according to claim 6, characterized in that, The transmission mechanism includes a second transmission chamber (7) rotatably connected to each crushing wheel (8). A third helical gear set (22) is provided in the second transmission chamber (7). One end of the central shaft of the crushing wheel (8) extends into the second transmission chamber (7), and one end of the corresponding transmission telescopic rod (4) extends into the second transmission chamber (7). The central shaft of the crushing wheel (8) and the ends of the transmission telescopic rod (4) extending into the second transmission chamber (7) are respectively fixedly installed with meshing helical gears. The two helical gears together constitute the third helical gear set (22). The second transmission rod (17) is provided with a first helical gear set (18), and one end of the corresponding transmission telescopic rod (4) extends into the transmission cavity. The second transmission rod (17) and the end of the corresponding transmission telescopic rod (4) extending into the transmission cavity are respectively fixedly installed with helical gears that mesh with each other. The two helical gears together constitute the first helical gear set (18).

8. The power grid safety assurance maintenance and cleaning device according to claim 7, characterized in that, The purging assembly includes a purging chamber located in the cleaning chamber (3), a blower (13) is provided in the purging chamber, the outlet of the blower (13) is sealed and connected to an air supply pipe (14), and a number of nozzles are provided on the air supply pipe (14).

9. A power grid safety assurance maintenance and cleaning device according to claim 8, characterized in that, The connecting assembly includes a connecting block (27) disposed on a connecting seat (26), a first adjusting tube (28) is fixedly installed on the connecting block (27), a second adjusting tube (29) is slidably connected to the first adjusting tube (28), a third adjusting tube (30) is slidably connected to the second adjusting tube (29), and a corresponding connecting block (27) is fixedly installed at one end of the third adjusting tube (30). A partition is fixedly installed on the second regulating tube (29), and several second spring telescopic rods (31) are fixedly installed on both sides of the partition. Two connecting frames (32) are slidably connected inside the second regulating tube (29). Each connecting frame (32) is fixedly connected to a corresponding number of second spring telescopic rods (31). A sliding groove is opened on the second regulating tube (29). Each connecting frame (32) has a handle fixedly installed through the corresponding sliding groove. The handle is used to move the connecting frame (32) to slide on the second regulating tube (29). Several adjusting heads (38) are fixedly installed on both of the connecting brackets (32). Several adjusting holes (33) are opened on the third adjusting tube (30) and the second adjusting tube (29). The adjusting heads (38) are inserted and connected to the adjusting holes (33). The connecting seat (26) has a second threaded hole, the connecting block (27) has a through hole, a bearing is provided in the through hole, the connecting seat (26) has a connecting shaft (37), the connecting shaft (37) has an external thread that mates with the second threaded hole, the connecting shaft (37) passes through the connecting seat (26) and the through hole, and a fine-tuning mechanism is provided in the first adjusting tube (28).

10. A power grid safety assurance maintenance and cleaning device according to claim 9, characterized in that, The fine-tuning mechanism includes a third threaded hole opened on the first adjusting tube (28), a threaded rod (35) threadedly fitted on the third threaded hole, one end of the threaded rod (35) being rotatably connected inside the first adjusting tube (28), a rotating rod (34) being rotatably connected on the first adjusting tube (28), and a hexagonal head being fixedly installed on the exposed end of the rotating rod (34); The rotating rod (34) is provided with a second worm gear transmission assembly (36), which includes a worm and a worm wheel. The worm is mounted on the rotating rod (34), and the threaded rod (35) is provided with a worm wheel that meshes with the worm.

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