Power supply line hot-line work insulation protection device and use method

Abstract

The invention relates to the technical field of power supply line hot-line work, in particular to a power supply line hot-line work insulation protection device and a use method. The cross arm is installed on the side face of the electric pole, and a strain insulator, a strain wire clamp arranged on the strain insulator and a power supply circuit arranged on the strain wire clamp are installed on the cross arm; the insulation shielding cover is arranged at the top of the cross arm and is used for integrally combining and shielding the strain insulator, the strain clamp and part of the wire which are arranged on the cross arm; the insulation shielding cover comprises an insulator shielding end arranged on the strain insulator, and a first shielding end and a second shielding end which are arranged on the strain clamp on the two sides of the insulator shielding end, limiting clamping pieces are symmetrically arranged on the outer sides of the first shielding end and the second shielding end in a crossed mode, and the limiting clamping pieces limit the strain clamp on the strain insulator; the method has the advantages of providing more intuitive and more reliable live working safety guarantee and improving psychological safety and working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of live working on power supply lines, and in particular to an insulation protection device for live working on power supply lines and a use method thereof. Background Art

[0002] Live working on power supply lines is a high-risk, high-tech job, and its core safety measures rely on complete insulation protection devices and strict operating procedures.

[0003] To this end, in response to the above problems, an insulation protection device for live working on power supply lines and a method of use are designed. By combining and shielding the three objects including tension insulators, tension clamps and part of the conductors as a whole, a more intuitive and reliable safety guarantee is provided, thereby enhancing the psychological sense of security and working efficiency, and improving the safety of live working on power supply lines. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an insulation protection device for live working on a power supply line and a method of use, so as to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an insulation protection device for live working on a power supply line, comprising: a pole; a cross arm, the cross arm being mounted on the side of the pole, on which are mounted a tension insulator, a tension clamp arranged on the tension insulator, and a power supply line arranged on the tension clamp; an insulating shielding cover, the main body of which is made of insulating material, the insulating shielding cover being arranged on the top of the cross arm, and providing overall combined shielding for the tension insulator, tension clamp and part of the conductor arranged on the cross arm, the insulating shielding cover comprising an insulator shielding end arranged on the tension insulator and a first shielding end and a second shielding end arranged on the tension clamps on both sides of the insulator shielding end, the first shielding end The first and second shielding ends are symmetrically arranged along the circumferential direction of the insulator shielding end and have the same structure. Limiting plates are symmetrically arranged on the inner sides of the first and second shielding ends, and limiting clamps are cross-symmetrically arranged on the outer sides of the first and second shielding ends, and the limiting clamps limit the tension clamp on the tension insulator; the outer sides of the first and second shielding ends are also connected with a shielding splicing plate by splicing, and a fixing clamp is arranged on the top of the inner side of the shielding splicing plate, and the fixing clamp fixes the power supply line on the tension clamp, and the first and second shielding ends and the upper surface connection ends of the shielding splicing plate are also symmetrically distributed with fixing blocks, and a positioning plate is slidably arranged in the fixed block.

[0006] Preferably, the fixing clamp includes a fixing clamp symmetrically distributed in the shielding splicing plate, and limiting rods are inserted at both ends of the symmetrically distributed fixing clamp. Both ends of the limiting rod are fixedly arranged on the inside of the shielding splicing plate, and a screw is inserted in the middle of the symmetrically distributed fixing clamp.

[0007] Preferably, one side of the screw is connected to a fixing plate arranged outside the shielding splicing plate, and the other side of the screw is connected to an adjustment plate arranged outside the other side of the shielding splicing plate. A limiting block is also provided in the middle of the screw.

[0008] Preferably, the first shielding end and the second shielding end are cross-symmetrically provided with connecting blocks and connecting slots along the circumferential outer side of the insulator shielding end and on both sides of the shielding splicing plate; the limiting clamp includes a shell fitted on the outer side of the first shielding end and the second shielding end, and connecting plates are symmetrically provided in the shell, and the lower ends of the connecting plates are connected to limiting clamps, and the limiting clamps are raised and lowered in the shell through the connecting plates to limit the tension clamps arranged inside the first shielding end and the second shielding end, and the shell is symmetrically provided with lifting grooves about the connecting plates.

[0009] Preferably, the connecting plates are provided with lifting racks at corresponding ends in the housing, and the lifting rack gears are engaged with second driven gears symmetrically provided in the housing at the four corners of a rectangle.

[0010] Preferably, the second driven gears are distributed in pairs in the housing, the two second driven gears on one side of the housing are symmetrically arranged in the upper and lower directions, and a first transmission belt is connected between the two second driven gears. The two second driven gears are also triangularly arranged with a second transmission belt, and the two second driven gears are connected to the driving gear arranged in the middle of the housing through the second transmission belt.

[0011] Preferably, a driving gear is provided in the middle of the shell, and the driving gear is meshed with a first driven gear at the upper and lower ends of the inner surface of the shell, and the first driven gear is meshed with a worm symmetrically distributed in the shell, and bearing seats are provided at both ends of the worm, and the bearing seats are fixedly provided at both ends of the worm in the shell. Limit racks are also movably provided on both sides of the worm, and the worm is driven to rotate by the first driven gear, so that the limit racks on both sides of the worm move toward and relative to each other, and the two limit racks move relative to each other, and the second driven gear is locked and no longer rotates, and the two limit racks move toward each other, and the second driven gear is unlocked and the second driven gear rotates to drive the connecting plate to rise and fall.

[0012] Preferably, the driving gear includes a lifting gear arranged at the lower end on the surface of the shell, the lifting gear includes a centrally symmetrical transmission wheel, the symmetrical transmission wheels are respectively provided with a second transmission belt, a second adjustment end is nested in the middle of the driving gear, a limiting gear is provided on the outer side of the lower end of the second adjustment end, the limiting gear is meshed with the first driven gear, and the upper end of the lifting gear is fixedly connected to the first adjustment end.

[0013] Preferably, a bearing is provided between the inner side of the upper end of the second adjusting end and the connecting end of the lifting gear, and a steel ball is provided between the inner side of the lower end of the second adjusting end and the connecting end of the lifting gear.

[0014] A method for using a live working insulation protection device for a power supply line, the method being implemented by using the live working insulation protection device for a power supply line, comprising the following steps: The first step is to use an insulating operating rod to clamp a dry cleaning cloth to remove dust, oil, salt and other impurities from the surface of the insulator string shed, tension clamp and power line connection of the tension insulator, tension clamp and power line installed on the cross arm of the pole. If necessary, wipe with anhydrous alcohol to ensure that the wrapped part is completely dry. Then install the insulating shielding cover on the corresponding tension insulator, tension clamp and some power line cross arms on the pole. At the same time, to increase the fit and protect the equipment surface, soft silicone or EPDM gaskets can be used at key contact points. In the second step, the driving gear on the limiting clamps on both sides of the first shielding end and the second shielding end of the insulating shielding cover is twisted to rotate through the second adjusting end provided on the driving gear, so that the first driven gear is driven to rotate through the limiting gear, so that the worm engaged with the first driven gear rotates, and the limiting racks connected to the two ends of the worm move toward each other, so that the limiting rack releases the lock on the second driven gear; The third step is that after the second driven gear is unlocked, the transmission wheel on the driving gear is rotated so that the transmission wheel drives the second driven gears distributed up and down on both sides to rotate through the second transmission belt, and the second driven gears distributed up and down on both sides are connected through the first transmission belt, and they rotate synchronously, so that when the second driven gear rotates, it engages with the lifting rack connected thereto, thereby completing the rise of the connecting plate, and at the same time drives the limiting clamping plate provided at the lower end of the connecting plate, so that it can limit the tension wire clamp on the tension insulator, and when the limiting is completed, the second adjusting end is rotated to complete the locking of the second driven gear again; In the fourth step, the first shielding end and the second shielding end on both sides of the insulating shielding cover are connected by the connecting blocks and the connecting slots, and the fixing blocks on the upper surface are installed to fix them with bolts. A positioning plate is installed through the fixing blocks to make the connection between the shielding splicing plate and the first shielding end and the second shielding end more stable and firm. Step 5. Finally, by rotating the adjustment plate provided on the outside of the shielding splicing plate, the screw is rotated, and the fixed clamping plate provided on the shielding end of the insulator in the shielding splicing plate is relatively moved, so that the power supply line is clamped and fixed for protection, and the installation of the insulation protection device is completed. After the staff completes the live operation of the power supply line, the device can be removed.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses an insulating shielding cover to shield the tension insulator string, tension wire clamp and adjacent power supply line parts on the crossarm as a whole, which is an effective strategy to improve the safety of live power supply line operations. This solves the pain points of traditional split shielding, such as gaps, unreliable overlap, and cumbersome operation. At the same time, it can eliminate the potential difference, so that in areas where workers may contact or approach (such as replacing insulators, repairing wire clamps, repairing wires, etc.), the potential between the live body and the grounding body is completely isolated to prevent electric shock. At the same time, the device can also reduce the number of shielding steps and components, shorten the time exposed to risks, and at the same time, the insulating shielding cover is installed in an integrated manner to eliminate the connection gaps between the shielding components, forming a continuous and complete insulation barrier, thereby providing more intuitive and reliable safety protection for live workers, improving psychological security and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall installation structure of the live working insulation protection device for power supply lines of the present invention; Figure 2 This is a schematic structural diagram of the insulation protection device for live working on power supply lines of the present invention; Figure 3 This is a schematic structural diagram of the insulating protective cover of the present invention; Figure 4 This is a schematic diagram of the vertical cross-section structure of the insulating protective cover of the present invention; Figure 5 It is a schematic diagram of the structure of the shielding splicing plate of the present invention; Figure 6 This is a schematic diagram of the fixing clamp structure of the present invention; Figure 7 It is a schematic diagram of the structure of the limiting clamp of the present invention; Figure 8 This is a schematic diagram of the front surface section structure of the position limiting clamp of the present invention; Figure 9This is a schematic diagram of the internal limiting rack structure of the front surface section of the limiting clamp of the present invention; Figure 10 This is a schematic diagram of the internal adjustment gear structure of the front surface section of the limiting clamp of the present invention.

[0017] Explanation of the markings in the figure: 1. Pole; 2. Crossarm; 3. Insulation shield cover; 4. Positioning plate; 5. Limiting clamp; 6. Shielding splicing plate; 7. First shielding end; 8. Insulator shielding end; 9. Second shielding end; 10. Fixing block; 11. Limiting plate; 12. Fixing plate; 13. Connecting block; 14. Connecting slot; 15. Fixing clamp; 16. Limiting rod; 17. Fixing plate; 18. Screw; 19. Adjusting plate; 20. Limiting block ; 21. Limiting splint; 22. Connecting plate; 23. Casing; 24. Lifting slot; 25. Lifting rack; 26. Driving gear; 27. First driven gear; 28. Second driven gear; 29. ​​Limiting rack; 30. First transmission belt; 31. Second transmission belt; 32. Worm; 33. Transmission wheel; 34. Steel ball; 35. Bearing; 36. First adjusting end; 37. Second adjusting end; 38. Limiting gear; 39. Lifting gear. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example 1

[0019] like Figure 1-4As shown, this embodiment discloses an insulation protection device for live working on a power supply line and a method for using the device, comprising a pole 1; a cross arm 2, the cross arm 2 being mounted on the side of the pole 1, on which are mounted a tension insulator, a tension clamp arranged on the tension insulator, and a power supply line arranged on the tension clamp; an insulating shielding cover 3, the main body of which is made of insulating material, the insulating shielding cover 3 being arranged on the top of the cross arm 2, and providing an overall combined shielding of the tension insulator, the tension clamp, and part of the conductor arranged on the cross arm 2, the insulating shielding cover 3 comprising an insulator shielding end 8 arranged on the tension insulator, and a first shielding end 7 and a second shielding end 9 arranged on the tension clamps on both sides of the insulator shielding end 8, the first shielding end 7 and the second shielding end 9 is symmetrically arranged along the circumferential direction of the insulator shielding end 8 and has the same structure. A limit plate 11 is symmetrically arranged on the inner side of the first shielding end 7 and the second shielding end 9. The outer sides of the first shielding end 7 and the second shielding end 9 are cross-symmetrically arranged with limit clamps 5. The limit clamps 5 limit the tension clamps on the tension insulator; the outer sides of the first shielding end 7 and the second shielding end 9 are also connected with a shielding splicing plate 6 by splicing, and a fixing clamp 15 is arranged on the top of the inner side of the shielding splicing plate 6. The fixing clamp 15 fixes the power supply line on the tension clamp, and the first shielding end 7 and the second shielding end 9 are symmetrically distributed on the connecting ends of the upper surface of the shielding splicing plate 6. A positioning plate 4 is slidably arranged in the fixed block 10.

[0020] In this embodiment, the tension insulator string, tension clamp and adjacent conductors on the crossarm 2 are integrated and shielded by the insulating shielding cover 3. By eliminating the connection gap risk and operation complexity inherent in the traditional shielding method, the safety level and work efficiency of the operators are significantly improved, thereby realizing the development of live working shielding technology towards a safer, more efficient and more reliable direction. This innovative shielding solution is an important progress in improving power supply reliability and protecting the life safety of live working personnel. At the same time, in order to increase the fit and protect the equipment surface, soft silicone or EPDM gaskets can be used in key contact parts such as the contact with the insulator shed to ensure a close fit and cover all key parts, providing more intuitive and reliable safety protection for live working personnel, and improving psychological security and work efficiency.

[0021] In this embodiment, the insulating shielding cover 3 includes an insulator shielding end 8 corresponding to the tension insulator in the middle and a first shielding end 7 and a second shielding end 9 provided on both sides of the insulator shielding end 8 corresponding to the tension clamp. The first shielding end 7 and the second shielding end 9 are symmetrically arranged along the circumference of the insulator shielding end 8 and have the same structure. The outer sides of the first shielding end 7 and the second shielding end 9 are also connected to the shielding splicing plate 6 by splicing. The shielding splicing plate 6 corresponds to the tension clamp and part of the conductor. The first shielding end 7 and the second shielding end 9 are symmetrically arranged along the circumference of the insulator shielding end 8. Both sides of the shielding splicing plate 6 are cross-symmetrically provided with connecting blocks 13 and connecting slots 14, and the first shielding end 7 and the second shielding end 9 are symmetrically distributed with fixing blocks 10 on the upper surface connection ends of the shielding splicing plate 6. A positioning plate 4 is slidably arranged in the fixing block 10, so that the first shielding end 7 and the second shielding end 9 on the insulating shielding cover 3 are connected to the shielding splicing plate 6 more stably and firmly. The protection range of the live working insulation protection device can also be expanded by splicing the shielding splicing plate 6 with the first shielding end 7 and the second shielding end 9 on both sides of the insulating shielding cover 3. Example 2

[0022] like Figure 1-10 As shown, this embodiment discloses an insulation protection device for live working on a power supply line and a method for using the device, comprising a pole 1; a cross arm 2, the cross arm 2 being mounted on the side of the pole 1, on which are mounted a tension insulator, a tension clamp arranged on the tension insulator, and a power supply line arranged on the tension clamp; an insulating shielding cover 3, the main body of which is made of insulating material, the insulating shielding cover 3 being arranged on the top of the cross arm 2, and providing an overall combined shielding of the tension insulator, the tension clamp, and part of the conductor arranged on the cross arm 2, the insulating shielding cover 3 comprising an insulator shielding end 8 arranged on the tension insulator, and a first shielding end 7 and a second shielding end 9 arranged on the tension clamps on both sides of the insulator shielding end 8, the first shielding end 7 and the second shielding end 9 is symmetrically arranged along the circumferential direction of the insulator shielding end 8 and has the same structure. A limit plate 11 is symmetrically arranged on the inner side of the first shielding end 7 and the second shielding end 9. The outer sides of the first shielding end 7 and the second shielding end 9 are cross-symmetrically arranged with limit clamps 5. The limit clamps 5 limit the tension clamps on the tension insulator; the outer sides of the first shielding end 7 and the second shielding end 9 are also connected with a shielding splicing plate 6 by splicing, and a fixing clamp 15 is arranged on the top of the inner side of the shielding splicing plate 6. The fixing clamp 15 fixes the power supply line on the tension clamp, and the first shielding end 7 and the second shielding end 9 are symmetrically distributed on the connecting ends of the upper surface of the shielding splicing plate 6. A positioning plate 4 is slidably arranged in the fixed block 10.

[0023] In this embodiment, the fixing clamp 15 includes a fixing clamp 17 symmetrically distributed in the shielding splicing plate 6, and a limiting rod 16 is inserted at both ends of the symmetrically distributed fixing clamp 17. The two ends of the limiting rod 16 are fixedly set on the inside of the shielding splicing plate 6. A screw 18 is inserted in the middle of the symmetrically distributed fixing clamp 17. One side of the screw 18 is connected to the fixing plate 12 set on the outside of the shielding splicing plate 6, and the other side of the screw 18 is connected to the adjustment plate 19 set on the outside of the other side of the shielding splicing plate 6. A limiting block 20 is also provided in the middle of the screw 18 for clamping the power supply line near the tension clamp to ensure that the insulation protection device can be stably and firmly set in the required position.

[0024] In this embodiment, the limiting clamp 5 includes a shell 23 that is fitted on the outside of the first shielding end 7 and the second shielding end 9, and a connecting plate 22 is symmetrically arranged in the shell 23. The lower ends of the connecting plates 22 are connected to the limiting clamp 21. The limiting clamp 21 is raised and lowered in the shell 23 through the connecting plate 22 to limit the tension clamp arranged inside the first shielding end 7 and the second shielding end 9. The symmetrical connecting plates 22 on the shell 23 are provided with lifting grooves 24, and the corresponding ends of the connecting plates 22 in the shell 23 are provided with lifting racks 25. The lifting racks 25 are gear-engaged and connected with the second driven gears 28 symmetrically arranged in the shell 23 at the four corners of a rectangle. The second driven gears 28 are distributed in pairs in the shell 23, and the two on one side of the shell 23 are connected. The second driven gears 28 are symmetrically arranged in the upper and lower parts, and a first transmission belt 30 is connected between the two second driven gears 28. The two second driven gears 28 are also triangularly arranged with a second transmission belt 31. The two second driven gears 28 are connected to the driving gear 26 arranged in the middle of the shell 23 through the second transmission belt 31, and are used to drive the second driven gears 28 on both sides to rotate through the rotation of the driving gear 26, so as to drive the connecting plate 22 to be raised and lowered, so that the tension clamps in the first shielding end 7 and the second shielding end 9 on the insulating shielding cover 3 can be limited when necessary, which effectively solves the problem that if the traditional shielding cover has no special limit, it may slide, rotate or even fall off due to gravity, wind, wire vibration or slight touch by the operator.

[0025] In this embodiment, a driving gear 26 is provided in the middle of the housing 23. The upper and lower ends of the driving gear 26 are meshed with the first driven gear 27 on the inner surface of the housing 23. The first driven gear 27 is meshed with a worm 32 symmetrically distributed in the housing 23. Bearing seats are provided at both ends of the worm 32. The bearing seats are fixedly provided at both ends of the worm 32 in the housing 23. Limit racks 29 are also movably provided on both sides of the worm 32. The worm 32 is driven to rotate by the first driven gear 27, so that the limit racks 29 on both sides of the worm 32 move toward and relative to each other. The two limit racks 29 move relative to each other, and the second driven gear 28 is locked and no longer rotates. The two limit racks 29 move toward each other, and the second driven gear 28 is unlocked. The second driven gear 28 rotates and drives the connecting gear 28. The connecting plate 22 is raised and lowered, and the driving gear 26 includes a lifting gear 39 arranged at the lower end on the surface of the shell 23. The lifting gear 39 includes a centrally symmetrical transmission wheel 33. The symmetrical transmission wheels 33 are respectively provided with a second transmission belt 31. A second adjusting end 37 is nested in the middle of the driving gear 26. A limiting gear 38 is provided on the outer side of the lower end of the second adjusting end 37. The limiting gear 38 is engaged with the first driven gear 27. The upper end of the lifting gear 39 is fixedly connected to the first adjusting end 36, and a bearing 35 is provided on the inner side of the upper end of the second adjusting end 37 and the connection end with the lifting gear 39. A steel ball 34 is provided on the inner side of the lower end of the second adjusting end 37 and the connection end with the lifting gear 39, which is used to control the lifting and lowering of the connecting plate 22 to prevent it from loosening when limiting the tension clamp.

[0026] A method for installing an insulation protection device for live working on a power supply line comprises the following steps: The first step is to use an insulating operating rod to clamp a dry cleaning cloth to remove dust, oil, salt and other impurities on the surface of the insulator string shed, strain clamp and power line connection of the tension insulator, strain clamp and power line installed on the cross arm 2 of the pole 1. If necessary, wipe with anhydrous alcohol to ensure that the wrapped part is completely dry. Then install the insulating shielding cover 3 on the corresponding tension insulator, strain clamp and part of the cross arm 2 of the power line on the pole 1. At the same time, in order to increase the fit and protect the surface of the equipment, soft silicone or EPDM gaskets can be used at key contact points such as the contact with the insulator shed and the splicing of the shielding splicing plate 6; In the second step, the driving gear 26 on the limiting clamps 5 on both sides of the first shielding end 7 and the second shielding end 9 of the insulating shielding cover 3 is twisted, so that the second adjusting end 37 provided on the driving gear 26 is rotated, so that the first driven gear 27 is driven to rotate through the limiting gear 38, so that the worm 32 engaged with the first driven gear 27 rotates, and the limiting racks 29 connected to the two ends of the worm 32 move toward each other, so that the limiting racks 29 release the lock on the second driven gear 28; In the third step, after the second driven gear 28 is unlocked, the transmission wheel 33 on the driving gear 26 is rotated, so that the transmission wheel 33 drives the second driven gears 28 distributed up and down on both sides to rotate through the second transmission belt 31, and the second driven gears 28 distributed up and down on both sides are connected by the first transmission belt 30. They rotate synchronously, so that when the second driven gear 28 rotates, it engages with the lifting rack 25 connected thereto, thereby completing the rise of the connecting plate 22, and at the same time drives the limiting clamping plate 21 provided at the lower end of the connecting plate 22, so that it can limit the tension clamp on the tension insulator. At the same time, when the limiting is completed, the second adjusting end 37 is rotated to complete the locking of the second driven gear 28 again. In the fourth step, the first shielding end 7 and the second shielding end 9 on both sides of the insulating shielding cover 3 are connected through the connecting blocks 13 and the connecting slots 14 and the fixing blocks 10 on the upper surface, and bolts are installed to fix them. The positioning plate 4 is installed through the fixing blocks 10 to make the connection between the shielding splicing plate 6 and the first shielding end 7 and the second shielding end 9 more stable and firm. Step 5. Finally, by rotating the adjustment plate 19 provided on the outside of the shielding splicing plate 6, the screw 18 is rotated, and the fixed clamping plate 17 provided on the insulator shielding end 8 inside the shielding splicing plate 6 is relatively moved, so that the power supply line is protected and clamped, and the installation of the insulation protection device is completed. After the staff completes the live operation of the power supply line, the device can be removed.

[0027] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure signs in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An insulation protection device for live working on power supply lines, characterized in that: include: Electric pole (1); A cross arm (2), the cross arm (2) being mounted on a side of the electric pole (1), and having a tension insulator, a tension clamp arranged on the tension insulator, and a power supply line arranged on the tension clamp mounted thereon; An insulating shielding cover (3) is provided on the top of the cross arm (2), and the insulating shielding cover (3) comprises an insulator shielding end (8) provided on the tension insulator and a first shielding end (7) and a second shielding end (9) provided on the tension clamps on both sides of the insulator shielding end (8), wherein the first shielding end (7) and the second shielding end (9) are symmetrically provided with a limit plate (11) on the inner side, and a limit clamp (5) is cross-symmetrically provided at one end of the outer side, and both ends are also connected with a shielding splicing plate (6), and a fixing clamp (15) is provided on the inner top of the shielding splicing plate (6).

2. The insulation protection device for live working on power supply lines according to claim 1, characterized in that: The fixing clamp (15) includes a fixing clamp (17) symmetrically arranged in the shielding splicing plate (6), and a limiting rod (16) is inserted at both ends of the symmetrically distributed fixing clamp (17). Both ends of the limiting rod (16) are fixedly arranged inside the shielding splicing plate (6), and a screw (18) is inserted in the middle of the symmetrically distributed fixing clamp (17).

3. The insulation protection device for live working on power supply lines according to claim 2, characterized in that: One side of the screw rod (18) is connected to a fixing plate (12) arranged on the outside of the shielding splicing plate (6), and the other side of the screw rod (18) is connected to an adjustment plate (19) arranged on the outside of the other side of the shielding splicing plate (6). A limiting block (20) is also provided in the middle of the screw rod (18).

4. The insulation protection device for live working on power supply lines according to claim 1, characterized in that: The first shielding end (7) and the second shielding end (9) are symmetrically provided with fixed blocks (10) on the connection ends of the upper surface of the shielding splicing plate (6), and a positioning plate (4) is slidably provided in the fixed blocks (10); the first shielding end (7) and the second shielding end (9) are cross-symmetrically provided with connection blocks (13) and connection slots (14) along the circumferential outer side of the insulator shielding end (8) and on both sides of the shielding splicing plate (6).

5. The insulation protection device for live working on power supply lines according to claim 1, characterized in that: The limiting clamp (5) includes a shell (23) that is fitted on the outside of the first shielding end (7) and the second shielding end (9), and a connecting plate (22) is symmetrically arranged in the shell (23). The lower ends of the connecting plates (22) are connected to the limiting clamp (21), and a lifting groove (24) is symmetrically arranged on the shell (23) and the connecting plate (22). The connecting plate (22) is provided with a lifting rack (25) at the corresponding end in the shell (23), and the lifting rack (25) is engaged with a second driven gear (28) symmetrically arranged in the four corners of the rectangular shape in the shell (23).

6. The insulation protection device for live working on power supply lines according to claim 5, characterized in that: The second driven gears (28) are arranged in pairs in the housing (23), a first transmission belt (30) is connected between the two second driven gears (28), and a second transmission belt (31) is also arranged in a triangle between the two second driven gears (28).

7. The insulation protection device for live working on power supply lines according to claim 5, characterized in that: A driving gear (26) is provided in the middle of the housing (23). The driving gear (26) is meshed with a first driven gear (27) at both upper and lower ends on the inner surface of the housing (23). The first driven gear (27) is meshed with a worm (32) symmetrically distributed in the housing (23). Limiting racks (29) are also movably provided on both sides of the worm (32).

8. The insulation protection device for live working on power supply lines according to claim 7, characterized in that: The driving gear (26) includes a lifting gear (39) arranged at the lower end on the surface of the housing (23), the lifting gear (39) includes a centrally symmetrical transmission wheel (33), and the symmetrical transmission wheels (33) are respectively provided with a second transmission belt (31). A second adjustment end (37) is nested in the middle of the driving gear (26), and a limiting gear (38) is provided on the outer side of the lower end of the second adjustment end (37). The upper end of the lifting gear (39) is fixedly connected to the first adjustment end (36).

9. The insulation protection device for live working on power supply lines according to claim 8, characterized in that: A bearing member (35) is provided on the inner side of the upper end of the second adjusting end (37) and the connection end of the lifting gear (39), and a steel ball (34) is provided on the inner side of the lower end of the second adjusting end (37) and the connection end of the lifting gear (39).

10. A method for using a live working insulation protection device for a power supply line, the method being implemented by using the live working insulation protection device for a power supply line according to any one of claims 1 to 9, characterized in that: The following steps are involved: The first step is to first remove dust, oil, salt and other impurities on the surface of the insulator string shed, the tension clamp and the power supply line installed on the cross arm (2) of the pole (1) by clamping a dry cleaning cloth with an insulating operating rod. If necessary, it can be wiped with anhydrous alcohol to ensure that the wrapped part is completely dry. Then, the insulating shielding cover (3) is installed on the cross arm (2) corresponding to the tension insulator, tension clamp and part of the power supply line on the pole (1). At the same time, in order to increase the fit and protect the surface of the equipment, soft silicone or EPDM pads can be used at the key contact parts. In the second step, the driving gear (26) on the limiting clamps (5) on both sides of the first shielding end (7) and the second shielding end (9) on the insulating shielding cover (3) is twisted to rotate the driving gear (26) through the second adjustment end (37) provided on the driving gear (26), so that the first driven gear (27) is driven to rotate through the limiting gear (38), so that the worm (32) engaged with the first driven gear (27) rotates, and the limiting racks (29) connected to the two ends of the worm (32) move toward each other, so that the limiting rack (29) releases the lock on the second driven gear (28); In the third step, after the second driven gear (28) is unlocked, the transmission wheel (33) on the driving gear (26) is rotated so that the transmission wheel (33) drives the second driven gears (28) distributed up and down on both sides to rotate through the second transmission belt (31), and the second driven gears (28) distributed up and down on both sides are connected through the first transmission belt (30), and they rotate synchronously so that when the second driven gear (28) rotates, the lifting rack (25) connected thereto is engaged, thereby completing the rising of the connecting plate (22), and at the same time driving the limiting clamp (21) provided at the lower end of the connecting plate (22) so that it can limit the tension clamp on the tension insulator, and when the limiting is completed, the second adjustment end (37) is rotated so that it can complete the locking of the second driven gear (28) again; In the fourth step, the first shielding end (7) and the second shielding end (9) on both sides of the insulating shielding cover (3) are connected through the connecting card blocks (13) and the connecting card slots (14) and the fixing blocks (10) on the upper surface, and bolts are installed to fix them. The positioning plate (4) is installed and set through the fixing blocks (10) so that the shielding splicing plate (6) is more stably and firmly connected to the first shielding end (7) and the second shielding end (9); The fifth step is to finally rotate the adjusting plate (19) provided on the outer side of the shielding splicing plate (6) to rotate the screw (18), so that the fixing clamp (17) provided on the shielding end (8) of the insulator in the shielding splicing plate (6) moves relatively, so that the power supply line is clamped and fixed for protection, and the installation of the insulation protection device is completed. After the staff completes the live operation of the power supply line, the device can be removed.

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