Device for replacing insulator at wire end of extra-high voltage line

Abstract

The utility model relates to the technical field of circuit construction, and discloses a device for replacing an insulator at a wire end of an extra-high voltage line, which comprises a special-shaped plate, a plurality of terminal fixing mechanisms are fixedly connected to the side wall of the special-shaped plate, a connecting frame is hinged to the outer side of the special-shaped plate, a mounting cylinder is fixedly connected to the lower side wall of the connecting frame, and the mounting cylinder is hinged to the outer side of the special-shaped plate. And a mounting rod is inserted into the mounting cylinder, the left end and the right end of the mounting rod are each sleeved with a blocking frame, and the blocking frames are fixed through a limiting mechanism and the mounting rod. According to the utility model, the effect of safely and efficiently replacing the first insulator at the wire end of the strain middle string of the + / -800kV extra-high voltage direct current line can be completely realized, and when the replacing device is used, the replacing device can be conveniently and quickly disassembled and assembled, so that the working convenience of operators is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit construction, in particular to a replacement device for an insulator at a conductor end of an ultra-high voltage line. Background Art

[0002] A conductor end insulator is a device used to support and insulate conductors. It is usually made of insulating materials such as ceramic or plastic, and can provide electrical isolation and mechanical support between the conductor and the pole or equipment. The main function of the conductor end insulator is to prevent electrical short circuits between the conductor and the supporting pole or equipment, and it can also resist the voltage and mechanical stress borne by the conductor.

[0003] The first insulator at the conductor end of the insulator string of the UHV DC line bears the highest voltage of the line, but its damage rate is very high and spontaneous explosion occurs from time to time, seriously affecting the safe operation of the line. The first insulator at the conductor end is usually replaced with a lever hoist. This method not only requires a large number of tools, but is also time-consuming, inefficient, and risky, and cannot fully meet the current requirements of UHV maintenance. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the replacement of high-voltage line insulators in the prior art not only requires a large number of tools, but is also time-consuming, inefficient, and risky, and cannot fully meet the current requirements of ultra-high voltage maintenance. A replacement device for insulators at the conductor end of an ultra-high voltage line is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for replacing insulators at the end of a conductor of an ultra-high voltage line comprises a special-shaped plate, a plurality of terminal fixing mechanisms are fixedly connected to the side wall of the special-shaped plate, a connecting frame is hingedly connected to the outer side of the special-shaped plate, a mounting tube is fixedly connected to the lower side wall of the connecting frame, a mounting rod is inserted into the mounting tube, blocking frames are sleeved on both left and right ends of the mounting rod, the blocking frames are fixed by a limiting mechanism and the mounting rod, an external frame is outermostly provided on the mounting rod, a hydraulic cylinder is provided below the external frame, and an output end of the hydraulic cylinder is fixedly connected to the lower side wall of the external frame.

[0007] Preferably, the terminal fixing mechanism includes a fixing cylinder inserted in the side wall of the special-shaped plate, a fixing pin is inserted in the fixing cylinder, a positioning groove is opened on the side wall of the fixing cylinder, and a positioning plate is inserted in the positioning groove, the side wall on the opposite side of the positioning plate and the fixing pin are fixedly connected with a plurality of mutually matching teeth, the side wall of the positioning plate is fixedly connected with a pull rod, the end of the pull rod away from the positioning plate extends out of the positioning groove and is fixedly connected with a pull plate, and the pull plate and the side wall on the opposite side of the fixing cylinder are fixedly connected with the same spring.

[0008] Preferably, a pull ring is fixedly connected to the side wall of the pull plate.

[0009] Preferably, the limiting mechanism includes a threaded rod rotatably connected to the side wall of the blocking frame, the threads on the upper and lower sides of the threaded rod have opposite rotation directions, the rod wall thread sleeve of the threaded rod is provided with two threaded barrels, the side walls of the two threaded barrels are fixedly connected with a bent rod, the end of the mounting rod is fixedly connected with an insert barrel, and the end of the bent rod away from the threaded barrel is inserted into the insert barrel.

[0010] Preferably, a groove is provided on the lower side wall of the blocking frame, the lower end of the threaded rod is located in the groove and is fixedly connected to a rotating cylinder through a spring, the inner wall of the rotating cylinder is fixedly connected to two sliding plates, the rod wall of the threaded rod is provided with a sliding groove that matches the sliding plate, the outer wall of the rotating cylinder is fixedly sleeved with a support ring, the lower side wall of the support ring is fixedly connected to a locking pin, the inner wall of the groove is fixedly connected to a limiting ring, and the side wall of the limiting ring is provided with multiple locking grooves.

[0011] Preferably, a rotating plate is fixedly connected to the side wall of the rotating drum.

[0012] Compared with the prior art, the utility model provides a device for replacing insulators at the ends of ultra-high voltage lines, which has the following beneficial effects:

[0013] 1. The device for replacing insulators at the ends of ultra-high voltage line conductors can fully achieve the effect of safely and efficiently replacing the first insulator at the ends of the tension string conductors of ±800kV ultra-high voltage DC lines through the provision of special-shaped plates, connection frames, mounting tubes, mounting rods, blocking frames, external frames, and hydraulic cylinders.

[0014] 2. The replacement device for the insulator at the conductor end of the UHV line can be easily and quickly disassembled and assembled when using the replacement device through the set fixing cylinder, fixing pin, positioning plate, clamping teeth, pull rod, pull plate, threaded rod, threaded cylinder, bent rod, insert cylinder, rotating cylinder, sliding plate, support ring, and locking pin, thereby improving the convenience of the operator's work.

[0015] Moreover, the parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can fully realize the effect of safely and efficiently replacing the first insulator at the end of the ±800kV ultra-high voltage DC line tension string conductor and can conveniently and quickly disassemble and assemble the replacement device when using the replacement device, thereby improving the convenience of the operator's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a device for replacing insulators at the ends of ultra-high voltage lines proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a threaded rod in a device for replacing an insulator at the end of a UHV line conductor proposed by the utility model;

[0018] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0019] Figure 4 This is a schematic diagram of the internal structure of a fixing cylinder in a replacement device for an insulator at the end of a UHV line proposed by the utility model;

[0020] Figure 5 The utility model is a schematic structural diagram of a special-shaped plate in a replacement device for an insulator at a conductor end of an ultra-high voltage line.

[0021] In the figure: 1. special-shaped plate; 2. connecting frame; 3. mounting cylinder; 4. mounting rod; 5. blocking frame; 6. external frame; 7. hydraulic cylinder; 8. fixing cylinder; 9. fixing pin; 10. positioning plate; 11. latching teeth; 12. pull rod; 13. pull plate; 14. threaded rod; 15. threaded cylinder; 16. bent rod; 17. insert cylinder; 18. rotating cylinder; 19. sliding plate; 20. supporting ring; 21. locking pin; 22. limiting ring; 23. rotating plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0023] Reference Figure 1-5 A device for replacing insulators at the end of a conductor of an ultra-high voltage line comprises a special-shaped plate 1, the side wall of the special-shaped plate 1 is fixedly connected with a plurality of terminal fixing mechanisms, a connecting frame 2 is hingedly connected to the outer side of the special-shaped plate 1, a mounting tube 3 is fixedly connected to the lower side wall of the connecting frame 2, a mounting rod 4 is inserted into the mounting tube 3, blocking frames 5 are sleeved on both ends of the mounting rod 4, the blocking frame 5 is fixed by a limiting mechanism and the mounting rod 4, an external frame 6 is sleeved on the outer shell of the mounting rod 4, a hydraulic cylinder 7 is arranged below the external frame 6, and an output end of the hydraulic cylinder 7 is fixedly connected to the lower side wall of the external frame 6.

[0024] The terminal fixing mechanism includes a fixing cylinder 8 inserted in the side wall of the special-shaped plate 1, a fixing pin 9 is inserted in the fixing cylinder 8, a positioning groove is opened on the side wall of the fixing cylinder 8, and a positioning plate 10 is inserted in the positioning groove, the side wall on the opposite side of the positioning plate 10 and the fixing pin 9 are fixedly connected with a plurality of mutually matching latch teeth 11, the side wall of the positioning plate 10 is fixedly connected with a pull rod 12, the end of the pull rod 12 away from the positioning plate 10 extends out of the positioning groove, and is fixedly connected with a pull plate 13, the pull plate 13 and the side wall on the opposite side of the fixing cylinder 8 are fixedly connected with the same spring, so as to facilitate the fixing of the terminal.

[0025] A pull ring is fixedly connected to the side wall of the pull plate 13 to facilitate pulling the pull plate 13 .

[0026] The limiting mechanism includes a threaded rod 14 rotatably connected to the side wall of the blocking frame 5, the threads on the upper and lower sides of the threaded rod 14 are in opposite directions, the rod wall of the threaded rod 14 is threadedly sleeved with two threaded tubes 15, the side walls of the two threaded tubes 15 are fixedly connected with a bent rod 16, the end of the mounting rod 4 is fixedly connected with an insert tube 17, and the end of the bent rod 16 away from the threaded tube 15 is inserted into the insert tube 17, so as to facilitate the connection of the hydraulic cylinder 7 and the special-shaped plate 1.

[0027] A groove is provided on the lower side wall of the blocking frame 5, and the lower end of the threaded rod 14 is located in the groove and is fixedly connected to a rotating cylinder 18 through a spring. The inner wall of the rotating cylinder 18 is fixedly connected to two sliding plates 19, and the rod wall of the threaded rod 14 is provided with a sliding groove that matches the sliding plate 19. A support ring 20 is fixedly sleeved on the outer wall of the rotating cylinder 18, and a locking pin 21 is fixedly connected to the lower side wall of the support ring 20. A limit ring 22 is fixedly connected to the inner wall of the groove, and a plurality of locking grooves are provided on the side wall of the limit ring 22, which improves the stability of the placement of the threaded rod 14.

[0028] A rotating plate 23 is fixedly connected to the side wall of the rotating drum 18 to facilitate the rotation of the rotating drum 18 .

[0029] The utility model, when in use, the wire end insulator is placed in the special-shaped plate 1, and then the fixing pin 9 is pressed, the fixing pin 9 is inserted into the insulator, and the fixing pin 9 is fixed by the mutual cooperation of the locking teeth 11 between the fixing pin 9 and the positioning plate 10, so as to fix the wire end insulator, and then the external frame 6 is sleeved on both sides of the mounting tube 3, and the mounting rod 4 is inserted into the external frame 6, and then the blocking frame 5 is sleeved outside the mounting rod 4, and then the rotating drum 18 is pressed, and the rotating drum 18 drives the supporting ring 20 and the locking pin 21 to disengage the limiting ring 22, and then the rotating drum 18 is rotated, and the rotating drum 18 drives the threaded rod 14 to rotate through the mutual cooperation of the sliding plate 19 and the sliding groove, and drives the two threaded cylinders 15 to move in the direction of approaching each other through the thread cooperation, and the threaded cylinder 15 drives the bent rod 16 to be inserted into the insertion tube 17, so that the mounting rod 4 and the blocking frame 5 can be fixed, and the external frame 6 and the hydraulic cylinder 7 are fixed, and the hydraulic cylinder 7 and the external fixing device are fixed, and the hydraulic cylinder 7 can be tightened by the hydraulic cylinder 7.

Claims

1. A device for replacing an insulator at the end of a UHV line conductor, comprising a special-shaped plate (1), characterized in that: The side wall of the special-shaped plate (1) is fixedly connected with a plurality of terminal fixing mechanisms, the outer side of the special-shaped plate (1) is hinged with a connecting frame (2), the lower side wall of the connecting frame (2) is fixedly connected with a mounting tube (3), a mounting rod (4) is inserted into the mounting tube (3), the left and right ends of the mounting rod (4) are sleeved with blocking frames (5), the blocking frame (5) is fixed by a limiting mechanism and the mounting rod (4), the outer shell of the mounting rod (4) is provided with an external frame (6), a hydraulic cylinder (7) is provided below the external frame (6), and the output end of the hydraulic cylinder (7) is fixedly connected to the lower side wall of the external frame (6).

2. The device for replacing insulators at the ends of ultra-high voltage lines according to claim 1, characterized in that: The terminal fixing mechanism comprises a fixing cylinder (8) inserted into the side wall of the special-shaped plate (1), a fixing pin (9) is inserted into the fixing cylinder (8), a positioning groove is opened on the side wall of the fixing cylinder (8), and a positioning plate (10) is inserted into the positioning groove, and the side wall on the opposite side of the positioning plate (10) and the fixing pin (9) are fixedly connected with a plurality of mutually matching latching teeth (11), the side wall of the positioning plate (10) is fixedly connected with a pull rod (12), one end of the pull rod (12) away from the positioning plate (10) extends out of the positioning groove and is fixedly connected with a pull plate (13), and the pull plate (13) and the side wall on the opposite side of the fixing cylinder (8) are fixedly connected with the same spring.

3. The device for replacing insulators at the ends of ultra-high voltage lines according to claim 2, characterized in that: A pull ring is fixedly connected to the side wall of the pull plate (13).

4. The device for replacing insulators at the ends of ultra-high voltage lines according to claim 1, characterized in that: The limiting mechanism comprises a threaded rod (14) rotatably connected to the side wall of the blocking frame (5), the threads of the threaded rod (14) on the upper and lower sides are in opposite directions, the rod wall of the threaded rod (14) is threadedly sleeved with two threaded cylinders (15), the side walls of the two threaded cylinders (15) are fixedly connected with a bent rod (16), the end of the mounting rod (4) is fixedly connected with an insert cylinder (17), and the end of the bent rod (16) away from the threaded cylinder (15) is inserted into the insert cylinder (17).

5. The device for replacing insulators at the ends of UHV lines according to claim 4, characterized in that: The lower side wall of the blocking frame (5) is provided with a groove, the lower end of the threaded rod (14) is located in the groove and is fixedly connected to a rotating cylinder (18) through a spring, the inner wall of the rotating cylinder (18) is fixedly connected to two sliding plates (19), the rod wall of the threaded rod (14) is provided with a sliding groove that matches the sliding plate (19), the outer wall of the rotating cylinder (18) is fixedly sleeved with a supporting ring (20), the lower side wall of the supporting ring (20) is fixedly connected to a locking pin (21), the inner wall of the groove is fixedly connected to a limiting ring (22), and the side wall of the limiting ring (22) is provided with a plurality of locking grooves.

6. The device for replacing insulators at the ends of UHV lines according to claim 5, characterized in that: A rotating plate (23) is fixedly connected to the side wall of the rotating drum (18).

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