Ice melting switch for short circuit and grounding of line

Abstract

The utility model provides an ice-melting switch for short circuit and grounding of a line, which is arranged at a three-phase joint end of an ice-melting line and comprises a conductive upright post, a power mechanism, a grounding lap joint mechanism and an ice-melting lap joint mechanism, and the power mechanism, the grounding lap joint mechanism and the ice-melting lap joint mechanism are all mounted on the conductive upright post. The grounding lap joint mechanism is connected in series with the ice melting lap joint mechanism; the power mechanism comprises a power source and a transfer assembly, the power source drives the grounding lap joint mechanism and the ice melting lap joint mechanism to move by driving the transfer assembly, the single power source drives the grounding lap joint mechanism and the ice melting lap joint mechanism to work, the number of used power sources is reduced, occupied space is reduced, and production and maintenance cost is reduced. And the popularization of the ice-melting line is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power systems, in particular to an ice-melting switch used for line short-circuiting and grounding. Background Art

[0002] With the rapid development of power systems, an increasing number of high-voltage and ultra-high-voltage transmission lines are crossing ice-covered areas. This increases the likelihood of power grid damage from extreme weather disasters. For example, ice on transmission lines can cause overloads and tripping. Furthermore, the weight of the ice, when covered, places a heavy load on the power lines, which can easily stretch or even break power cables, or cause the towers supporting them to collapse. Therefore, when ice covers transmission lines, timely de-icing is essential.

[0003] The working principle of line de-icing is as follows: In a substation, the low-voltage side of the main transformer is used as the power source. Rectification technology is used to convert the AC power into DC power. This power is then routed through the DC busbar to the transmission line requiring de-icing. At the substation at the other end of the transmission line, the three phases are short-circuited. Currently, during de-icing operations, a grounding wire is typically used to short-circuit the high-voltage line to prevent accidents. Therefore, existing de-icing lines require the installation of both de-icing and grounding lines. One set of operating mechanisms controls the on / off of the de-icing line, while another controls the on / off of the grounding line. This arrangement not only takes up a lot of space but also incurs high costs and maintenance requirements, making it unsuitable for widespread use of de-icing lines.

[0004] In summary, there is an urgent need for an ice-melting switch for line short-circuiting and grounding to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide an ice-melting switch for short-circuiting and grounding a line, aiming to solve the problem that the existing ice-melting line uses two sets of operating mechanisms to operate the ice-melting line and the grounding line respectively, which occupies a large space and has high production and maintenance costs. The specific technical solution is as follows:

[0006] A de-icing switch for short-circuiting and grounding a line is arranged at the three-phase junction end of the de-icing line, comprising a conductive column, a power mechanism, a grounding bridge mechanism and an ice-melting bridge mechanism. The power mechanism, the grounding bridge mechanism and the ice-melting bridge mechanism are all mounted on the conductive column, and the grounding bridge mechanism is connected in series with the ice-melting bridge mechanism; the power mechanism comprises a power source and a transfer assembly, the power source drives the grounding bridge mechanism and the ice-melting bridge mechanism to move respectively by driving the transfer assembly, the transfer assembly comprises a mounting frame, a toggle wheel, a first groove wheel and a second groove wheel, the mounting frame is mounted on the conductive column, the toggle wheel, the first groove wheel and the second groove wheel are all rotatably connected to the mounting frame, the toggle wheel is arranged between the first groove wheel and the second groove wheel, the toggle wheel is used to toggle the first groove wheel and the second groove wheel for rotation respectively, the first groove wheel is used to drive the grounding bridge mechanism to be connected or disconnected, and the second groove wheel is used to drive the ice-melting bridge mechanism to be connected or disconnected; the power source is used to drive the toggle wheel to rotate.

[0007] Furthermore, the ice-melting bridge mechanism includes a first static contact, a first porcelain bottle, an ice-melting base, an ice-melting knife switch, a mounting seat and a first transmission assembly. The first porcelain bottle is installed on the ice-melting base, the first static contact is installed on the top of the first porcelain bottle, and the first static contact is conductively connected to the main static contact of the main line. The ice-melting knife switch is rotatably connected to the mounting seat, and the mounting seat is connected to the conductive column through a grounding bridge mechanism. The first transmission assembly is connected to the ice-melting base and is used to control the rotation of the ice-melting knife switch so that the ice-melting knife switch is connected or disconnected with the first static contact; it also includes an ice-melting terminal board, which is installed on the mounting seat, and the ice-melting terminal board is conductively connected to the ice-melting knife switch.

[0008] Furthermore, the first transmission assembly includes a first crank arm shaft, a first pull rod, a second crank arm shaft and a second porcelain bottle. The first crank arm shaft is coaxially connected to the first groove wheel, the second crank arm shaft is rotatably connected to the ice melting base, the first crank arm shaft and the second crank arm shaft are connected through the first pull rod, the second porcelain bottle is connected to the end of the second crank arm shaft away from the first pull rod, and the second porcelain bottle is coaxially connected to the second crank arm shaft, and the second porcelain bottle is used to drive the ice melting knife gate to rotate.

[0009] Furthermore, the first transmission assembly also includes a crank, a connecting rod and an adjusting block. The crank is fixedly connected to the end of the second porcelain bottle away from the second crank arm shaft. The adjusting block is installed on the ice-melting knife gate. One end of the connecting rod is hinged to the adjusting block, and the other end of the connecting rod is hinged to the end of the crank away from the second porcelain bottle.

[0010] Furthermore, the first transmission assembly also includes a fastener, the adjustment block is slidably connected to the ice-melting knife gate, and the fastener is used to fix the adjustment block on the ice-melting knife gate.

[0011] Furthermore, the ice-melting knife gate has a disconnected state and an engaged state. When the ice-melting knife gate is in the engaged state, the crank and the connecting rod are located on the same straight line.

[0012] Furthermore, the toggle wheel has two toggle pins, the first groove wheel is provided with four first toggle grooves, and the second groove wheel is provided with four second toggle grooves. The toggle wheel alternately enters the first toggle grooves and the second toggle grooves through the toggle pins, and respectively toggle the first groove wheel and the second groove wheel to rotate.

[0013] Furthermore, a sleeve is rotatably sleeved on the outside of the toggle pin, the outer diameter of the sleeve is smaller than the groove width of the first groove wheel, and the outer diameter of the sleeve is smaller than the groove width of the second groove wheel.

[0014] Furthermore, a shaft sleeve is arranged between the toggle pin and the sleeve, and the shaft sleeve is rotatably connected to the toggle pin.

[0015] Furthermore, the grounding connection mechanism includes a fixed base, a supporting porcelain bottle, a grounding contact, a grounding knife switch and a second transmission assembly. The fixed base is installed on the conductive column, the supporting porcelain bottle is installed on the fixed base, the mounting seat is installed on the top of the supporting porcelain bottle, the grounding contact is arranged on the mounting seat, and the grounding contact is connected to the ice-melting knife switch. The grounding knife switch is rotatably connected to the fixed base. The second transmission assembly is used to drive the grounding knife switch to rotate so that the grounding knife switch and the grounding contact are connected or disconnected; the second transmission assembly includes a third crank arm shaft, a fourth crank arm shaft and a second pull rod. The third crank arm shaft is coaxially connected to the second groove wheel, the fourth crank arm shaft is rotatably connected to the fixed base, the third crank arm shaft and the fourth crank arm shaft are connected through the second pull rod, the rotation of the third crank arm drives the fourth crank arm to rotate through the second pull rod, and the grounding knife switch is fixedly connected to the fourth crank arm shaft.

[0016] The application of the technical solution of the utility model has the following beneficial effects:

[0017] When the ice-melting switches for line shorting and grounding are used to melt ice on a high-voltage line, at least two are arranged. The two ice-melting switches are arranged at the ends of two high-voltage lines. The ice-melting bridge mechanisms on the two ice-melting switches are connected via wires. When the two ice-melting switches are simultaneously closed, the two high-voltage lines are connected via the two ice-melting switches and the wires. During ice-melting operation, a power source drives the toggle wheel to rotate, driving the first groove wheel to rotate. The first groove wheel drives the internal connection of the ice-melting bridge mechanism, thereby connecting one side of the ice-melting switches of the two high-voltage lines. One of the high-voltage lines at one end of the two high-voltage lines away from the ice-melting switches is connected to the positive electrode of the DC power supply, and the other high-voltage line is connected to the negative electrode of the DC power supply. When the two ice-melting switches are simultaneously operated, the two high-voltage lines are directly short-circuited at both ends of the DC circuit via the two ice-melting switches and the wires, causing the high-voltage lines to heat up and melt ice. At the same time, the driving source continues to drive the toggle wheel to rotate, and then drives the second groove wheel to rotate, so that the second groove wheel drives the grounding strapping mechanism to operate, and the grounding strapping line is connected in series with the ice-melting strapping line, so that the high-voltage line is directly connected to the earth through the ice-melting strapping mechanism and the grounding strapping mechanism, so as to realize the grounding of the high-voltage line to prevent danger during the ice melting process, that is, the closing and disconnecting operations of the ice-melting strapping mechanism and the grounding strapping mechanism are realized through a single power mechanism, which reduces the number of power sources used, reduces the space occupied, reduces the production and maintenance costs, and is conducive to the promotion of ice-melting lines.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. Figures 1-10 , the utility model is further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of an ice-melting switch for short-circuiting and grounding a circuit in the present invention;

[0021] Figure 2 yes Figure 1 One of the left views;

[0022] Figure 3 yes Figure 1 Left view 2;

[0023] Figure 4This is a schematic diagram of the internal structure of a splitter assembly in an ice-melting switch for short-circuiting and grounding a circuit in the utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of a splitter assembly in an ice-melting switch for circuit short-circuiting and grounding according to the present invention from another perspective;

[0025] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle;

[0026] Figure 7 This is a partially enlarged schematic diagram of an ice-melting switch for short-circuiting and grounding a circuit in the present invention;

[0027] Figure 8 yes Figure 7 Left view of;

[0028] Figure 9 This is a schematic diagram of the overall structure of an ice melting base in an ice melting switch for short-circuiting and grounding a circuit in the present invention;

[0029] Figure 10 yes Figure 9 Cross-sectional view at point A.

[0030] Among them, 1. Conductive column; 2. Power mechanism; 21. Power source; 22. Transfer assembly; 221. Mounting frame; 222. Toggle wheel; 2221. Toggle pin; 2222. Sleeve; 2223. Bushing; 223. First groove wheel; 2231. First toggle slot; 224. Second groove wheel; 2241. Second toggle slot; 3. Grounding connection mechanism; 31. Fixed base; 32. Supporting porcelain bottle; 33. Grounding contact; 34. Grounding knife switch; 35. Second transmission Assembly; 351, third crank arm shaft; 352, fourth crank arm shaft; 353, second pull rod; 4, ice-melting overlap mechanism; 41, first static contact; 42, first porcelain bottle; 43, ice-melting base; 44, ice-melting knife switch; 45, mounting seat; 46, first transmission assembly; 461, first crank arm shaft; 462, first pull rod; 463, second crank arm shaft; 464, second porcelain bottle; 465, crank; 466, connecting rod; 467, adjustment block; 47, ice-melting terminal board. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the following provides a more comprehensive description of the present invention and presents preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Example:

[0034] See also Figures 1-10 This embodiment provides an ice-melting switch for short-circuiting and grounding a line, which is arranged at the three-phase junction end of the ice-melting line, including a conductive column 1, a power mechanism 2, a grounding bridge mechanism 3, and an ice-melting bridge mechanism 4. The power mechanism 2, the grounding bridge mechanism 3, and the ice-melting bridge mechanism 4 are all installed on the conductive column 1, and the grounding bridge mechanism 3 is connected in series with the ice-melting bridge mechanism 4. The power mechanism 2 includes a power source 21 and a transfer assembly 22. The power source 21 drives the transfer assembly 22 to respectively drive the grounding bridge mechanism 3 and the ice-melting bridge mechanism 4 to move. The transfer assembly 22 includes a mounting frame 221 and a toggle wheel 222. , the first sheave 223 and the second sheave 224, the mounting frame 221 is installed on the conductive column 1, the toggle wheel 222, the first sheave 223 and the second sheave 224 are all rotatably connected to the mounting frame 221, the toggle wheel 222 is arranged between the first sheave 223 and the second sheave 224, the toggle wheel 222 is used to respectively toggle the first sheave 223 and the second sheave 224 for rotation, the first sheave 223 is used to drive the grounding overlap mechanism 3 to be connected or disconnected, and the second sheave 224 is used to drive the ice melting overlap mechanism 4 to be connected or disconnected; the power source 21 is used to drive the toggle wheel 222 to rotate.

[0035] Specifically, when de-icing a high-voltage line, at least two de-icing switches for shorting and grounding are deployed. These switches are located at the ends of two high-voltage lines. The de-icing bridge mechanisms 4 on these switches are connected via wires. When both de-icing switches are closed simultaneously, the two high-voltage lines are connected via the switches and the wires. It should be noted that if there are three high-voltage lines, two of them can be randomly selected for de-icing, and the process continues until all lines are de-iced. The same principle also applies to more than three lines. It is worth noting that the high-voltage lines referred to herein refer to lines with a voltage to ground of 250 volts or greater. In this embodiment, the power source 21 includes a motor and a reduction gear. The motor transmits power to the reduction gear, which in turn drives the toggle wheel 222 to rotate. In other embodiments, the power source 21 can also be a separate stepper motor, a manual drive mechanism, or the like.

[0036] It can be understood that when the ice melting operation is performed, the toggle wheel 222 is driven to rotate by the power source 21, which drives the first groove wheel 223 to rotate, and the ice melting overlap mechanism 4 is driven to be connected internally through the first groove wheel 223 (the ice melting overlap mechanism 4 is equivalent to a switch. When the ice melting overlap mechanism 4 is internally connected, the lines at both ends are connected. When the ice melting overlap mechanism 4 is internally disconnected, the lines at both ends are disconnected). As a result, one side of the ice melting switches of the two high-voltage lines is connected, and one of the high-voltage lines at one end of the two high-voltage lines away from the ice melting switches is connected to the positive pole of the DC power supply, and the other high-voltage line is connected to the negative pole of the DC power supply. When the two ice melting switches for line short-circuiting and grounding work at the same time, it is equivalent to short-circuiting the two high-voltage lines directly at both ends of the DC circuit through the two ice melting switches for line short-circuiting and grounding and the wires, so that the high-voltage lines are heated to achieve ice melting. At the same time, the driving source continues to drive the toggle wheel 222 to rotate, and then drives the second groove wheel 224 to rotate, so that the second groove wheel 224 drives the grounding strapping mechanism 3 to operate, and the grounding strapping line is connected in series with the ice-melting strapping line, so that the high-voltage line is directly connected to the earth through the ice-melting strapping mechanism 4 and the grounding strapping mechanism 3, so as to realize the grounding of the high-voltage line to prevent danger during the ice melting process, that is, the ice-melting strapping mechanism 4 and the grounding strapping mechanism 3 are closed and disconnected by a single power mechanism 2, which reduces the number of power sources 21 used, reduces the space occupied, reduces the production and maintenance costs, and is conducive to the promotion of ice-melting lines.

[0037] Furthermore, the ice-melting bridge mechanism 4 includes a first static contact 41, a first porcelain bottle 42, an ice-melting base 43, an ice-melting knife switch 44, a mounting seat 45 and a first transmission assembly 46. The first porcelain bottle 42 is installed on the ice-melting base 43, the first static contact 41 is installed on the top of the first porcelain bottle 42, and the first static contact 41 is conductively connected to the main static contact of the main line. The ice-melting knife switch 44 is rotatably connected to the mounting seat 45, and the mounting seat 45 is connected to the conductive column 1 through the grounding bridge mechanism 3. The first transmission assembly 46 is connected to the ice-melting base 43 and is used to control the rotation of the ice-melting knife switch 44 so that the ice-melting knife switch 44 is connected or disconnected with the first static contact 41; it also includes an ice-melting terminal block 47, which is installed on the mounting seat 45, and the ice-melting terminal block 47 is conductively connected to the ice-melting knife switch 44. Specifically, the first static contact 41 is directly connected to the main static contact of the main line and the high-voltage line, and the ice-melting terminal board 47 is connected to the ice-melting knife switch 44 through a soft copper plate. When the ice-melting knife switch 44 is connected to the first static contact 41, the high-voltage line is connected to the ice-melting terminal board 47, and the ice-melting circuit boards on the two adjacent ice-melting switches used for line short-circuiting and grounding are directly connected through wires.

[0038] Understandably, when de-icing is not required on the high-voltage line, the ice-melting switch 44 and the first static contact 41 are disconnected, the ice-melting circuit is inoperative, and the high-voltage main line can operate normally. The first porcelain bottle 42 between the first static contact 41 and the ice-melting base 43 supports and insulates the first static contact 41, preventing the first static contact 41 from conducting with the ice-melting switch 44. When de-icing is required on the high-voltage line, the ice-melting switch 44 is rotated by the first transmission member, conducting the ice-melting switch 44 with the first static contact 41. Current flows sequentially through the first static contact 41, the ice-melting switch 44, the soft copper plate, and the ice-melting terminal block 47, thereby conducting the first static contact 41 with the ice-melting terminal block 47. The two ice-melting terminal blocks 47 on the two ice-melting switches on the two high-voltage lines, which are used for shorting and grounding the lines, are directly connected via wires, thereby short-circuiting the two high-voltage lines and facilitating connection of a DC power supply to the other ends of the two high-voltage lines for de-icing. It should be noted that the arrangement of the soft copper plate allows current to flow from the ice-melting blade switch 44 to the ice-melting terminal board 47. Current also flows from the ice-melting blade switch 44 through the mounting base 45 to the ice-melting terminal board 47. Because the ice-melting blade switch 44 and the mounting base 45 are connected in a rotating manner, when a large current flows from the ice-melting blade switch 44 to the mounting base 45, it is easy to generate a breakdown arc, causing damage to the rotating connection. Therefore, the arrangement of the soft copper plate reduces the current flowing directly from the ice-melting blade switch 44 to the fixed base 31, which is beneficial to improving the service life of the ice-melting blade switch 44. In this embodiment, the first porcelain bottle 42 is the main support porcelain bottle.

[0039] Furthermore, the first transmission assembly 46 includes a first crank arm shaft 461, a first pull rod 462, a second crank arm shaft 463, and a second porcelain bottle 464. The first crank arm shaft 461 is coaxially connected to the first groove wheel 223, the second crank arm shaft 463 is rotatably connected to the ice melting base 43, the first crank arm shaft 461 and the second crank arm shaft 463 are connected by the first pull rod 462, the second porcelain bottle 464 is connected to the end of the second crank arm shaft 463 away from the first pull rod 462, and the second porcelain bottle 464 is coaxially connected to the second crank arm shaft 463. The second porcelain bottle 464 is used to drive the ice melting knife gate 44 to rotate. Specifically, one end of the first pull rod 462 is ball-jointed to the first crank arm shaft 461, and the other end of the first pull rod 462 is ball-jointed to the second crank arm shaft 463. It is understandable that the rotation of the first sheave 223 drives the first crank arm shaft 461 to rotate, and drives the second crank arm shaft 463 and the second porcelain bottle 464 to rotate through the first pull rod 462. The ice melting knife gate 44 is insulated from the second crank arm shaft 463 by the second porcelain bottle 464.

[0040] It should be noted that the first transmission assembly 46 also includes a crank 465, a connecting rod 466, and an adjustment block 467. The crank 465 is fixedly connected to the end of the second porcelain bottle 464 away from the second crank arm shaft 463. The adjustment block 467 is mounted on the ice-melting knife gate 44. One end of the connecting rod 466 is hinged to the adjustment block 467, and the other end of the connecting rod 466 is hinged to the end of the crank 465 away from the second porcelain bottle 464. As can be understood, when the second crank arm shaft 463 rotates, the crank 465 rotates with the second crank arm shaft 463, thereby driving the adjustment block 467 and the ice-melting knife gate 44 to rotate via the connecting rod 466 connected to the crank 465. In this embodiment, the second porcelain bottle 464 is the operating porcelain bottle.

[0041] Furthermore, the first transmission assembly 46 further includes a fastener, and the adjustment block 467 is slidably connected to the ice-melting knife gate 44. The fastener is used to fix the adjustment block 467 to the ice-melting knife gate 44. Specifically, the fastener is a screw. By tightening the screw, the adjustment block 467 can be fixed to a certain position of the ice-melting knife gate 44. By loosening the screw, the adjustment block 467 can be slid along the ice-melting knife gate 44 to change the position of the adjustment block 467 on the ice-melting knife gate 44. It can be understood that when the ice-melting knife gate 44 cannot be closed reliably, that is, the ice-melting knife gate 44 cannot be rotated to the predetermined position when closing, by adjusting the relative position of the adjustment block 467 and the ice-melting knife gate 44, the adjustment block 467 is moved closer to the rotation connection point between the ice-melting knife gate 44 and the mounting seat 45, so that when the crank 465 rotates at the same angle, the adjustment block 467 drives the ice-melting knife gate 44 to rotate at a larger angle, so that the ice-melting knife gate 44 can be smoothly rotated to the predetermined position, thereby preventing the ice-melting knife gate 44 from being closed loosely.

[0042] Furthermore, the ice-melting blade gate 44 has an open state and an open state. When the ice-melting blade gate 44 is in the open state, the crank 465 and the connecting rod 466 are located on the same straight line. It can be understood that when the ice-melting blade gate 44 needs to be closed, the crank 465 drives the connecting rod 466 to move, thereby driving the ice-melting blade gate 44 to rotate about the mounting base 45, so that the ice-melting blade gate 44 rotates from the open state to the open state or vice versa. When the ice-melting knife gate 44 is working in the engaged state, the crank 465 and the connecting rod 466 are located on the same straight line. At this time, the reaction force of the ice-melting knife gate 44 on the crank 465 and the connecting rod 466 is parallel and passes through the crank 465 and the connecting rod 466. At this time, the torque on the crank 465 and the connecting rod 466 is zero, so when there is no external force to change the relative angle of the crank 465 and the connecting rod 466, the relative position of the crank 465 and the connecting rod 466 will not change, that is, the crank 465 and the connecting rod 466 work at the dead point position, and support the ice-melting knife gate 44 to prevent the ice-melting knife gate 44 from rotating back.

[0043] Furthermore, the toggle wheel 222 has two toggle pins 2221, the first sheave 223 is provided with four first toggle grooves 2231, and the second sheave 224 is provided with four second toggle grooves 2241. The toggle wheel 222 alternately enters the first toggle grooves 2231 and the second toggle grooves 2241 via the toggle pins 2221, thereby toggle the first sheave 223 and the second sheave 224 for rotation. It is understood that when the toggle wheel 222 rotates counterclockwise, the toggle pins 2221 on the toggle wheel 222 sequentially enter the first toggle grooves 2231 on the first sheave 223, driving the first sheave 223 to rotate clockwise. As the toggle wheel 222 continues to rotate, the toggle pins 2221 on the toggle wheel 222 sequentially disengage from the first toggle grooves 2231 and enter the second toggle grooves 2241 on the second sheave 224, driving the second sheave 224 to rotate clockwise.

[0044] Furthermore, a sleeve 2222 is rotatably mounted on the outer surface of the toggle pin 2221. The outer diameter of the sleeve 2222 is smaller than the groove width of the first sheave 223, and the outer diameter of the sleeve 2222 is smaller than the groove width of the second sheave 224. It is understood that when the toggle pin 2221 toggles the first and second sheaves 223 and 224 to rotate, the sleeve 2222 contacts the inner wall of the first groove 2231 on the first sheave 223, generating rolling friction. At this time, the sleeve 2222 rotates relative to the toggle pin 2221, thereby reducing wear on the toggle pin 2221 and increasing the service life of the toggle pin 2221.

[0045] Furthermore, a sleeve 2223 is disposed between the toggle pin 2221 and the sleeve 2222, and the sleeve 2223 is rotatably connected to the toggle pin 2221. It is understood that the arrangement of the sleeve 2223 further reduces wear between the toggle pin 2221 and the sleeve 2222, thereby increasing the service life of the toggle pin 2221. Furthermore, the arrangement of the sleeve 2223 reduces friction, making the operation process smoother, reducing the probability of malfunctions such as jamming, and helping to reduce energy consumption.

[0046] Furthermore, the grounding bonding mechanism 3 includes a fixed base 31, a supporting porcelain bottle 32, a grounding contact 33, a grounding knife switch 34 and a second transmission assembly 35. The fixed base 31 is mounted on the conductive column 1, the supporting porcelain bottle 32 is mounted on the fixed base 31, the mounting seat 45 is mounted on the top of the supporting porcelain bottle 32, the grounding contact 33 is arranged on the mounting seat 45, and the grounding contact 33 is connected to the ice melting knife switch 44. The grounding knife switch 34 is rotatably connected to the fixed base 31, and the second transmission assembly 35 is used to drive the grounding knife switch 34 to rotate. So that the grounding knife switch 34 and the grounding contact 33 are connected or disconnected; the second transmission assembly 35 includes a third crank arm shaft 351, a fourth crank arm shaft 352 and a second pull rod 353, the third crank arm shaft 351 is coaxially connected to the second groove wheel 224, the fourth crank arm shaft 352 is rotatably connected to the fixed base 31, the third crank arm shaft 351 and the fourth crank arm shaft 352 are connected through the second pull rod 353, the rotation of the third crank arm drives the fourth crank arm to rotate through the second pull rod 353, and the grounding knife switch 34 is fixedly connected to the fourth crank arm shaft 352.

[0047] The specific working process of this program is as follows:

[0048] When the high-voltage line needs to be de-iced and connected, the power source 21 drives the toggle wheel 222 to rotate counterclockwise, and the toggle wheel 222 drives the first grooved wheel 223 to rotate clockwise. The rotation of the first grooved wheel 223 drives the first crank arm to rotate. The first crank arm drives the second crank arm, the second porcelain bottle 464 and the crank 465 to rotate simultaneously through the first pull rod 462. The crank 465 drives the adjustment block 467 and the ice-melting knife switch 44 through the connecting rod 466 to move, so that the ice-melting knife switch 44 is closed, and the ice-melting operation of the line is now completed. The toggle wheel 222 is continued to be driven counterclockwise, and the toggle wheel 222 drives the second grooved wheel 224 to rotate clockwise. The rotation of the second grooved wheel 224 drives the third crank arm to rotate. The third crank arm drives the fourth crank arm and the grounding knife switch 34 to rotate through the second pull rod 353, so that the grounding knife switch 34 is closed, and the grounding operation of the line is now completed. When it is necessary to end the ice melting operation and the grounding operation, it is only necessary to reverse the rotation of the power supply. The remaining steps are basically opposite during reverse rotation and will not be repeated here.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An ice-melting switch for short-circuiting and grounding a line, arranged at the three-phase junction of an ice-melting line, characterized by: It comprises a conductive column (1), a power mechanism (2), a grounding connection mechanism (3) and an ice-melting connection mechanism (4). The power mechanism (2), the grounding connection mechanism (3) and the ice-melting connection mechanism (4) are all installed on the conductive column (1), and the grounding connection mechanism (3) and the ice-melting connection mechanism (4) are connected in series; The power mechanism (2) includes a power source (21) and a transfer assembly (22). The power source (21) drives the transfer assembly (22) to respectively drive the ground connection mechanism (3) and the ice melting connection mechanism (4) to move. The transfer assembly (22) comprises a mounting frame (221), a toggle wheel (222), a first groove wheel (223) and a second groove wheel (224); the mounting frame (221) is mounted on the conductive column (1); the toggle wheel (222), the first groove wheel (223) and the second groove wheel (224) are all rotatably connected to the mounting frame (221); the toggle wheel (222) is arranged between the first groove wheel (223) and the second groove wheel (224); the toggle wheel (222) is used to respectively toggle the first groove wheel (223) and the second groove wheel (224) to rotate; the first groove wheel (223) is used to drive the grounding overlap mechanism (3) to be connected or disconnected internally; the second groove wheel (224) is used to drive the ice melting overlap mechanism (4) to be connected or disconnected internally; and the power source (21) is used to drive the toggle wheel (222) to rotate.

2. The ice melting switch for line short-circuiting and grounding according to claim 1, characterized in that: The ice-melting overlap mechanism (4) comprises a first static contact (41), a first porcelain bottle (42), an ice-melting base (43), an ice-melting knife switch (44), a mounting seat (45) and a first transmission assembly (46), wherein the first porcelain bottle (42) is mounted on the ice-melting base (43), the first static contact (41) is mounted on the top of the first porcelain bottle (42), and the first static contact (41) is conductively connected to the main static contact of the main circuit, and the ice-melting knife switch (44) is rotatably connected to the mounting seat (45). The mounting seat (45) is connected to the conductive column (1) through the grounding bridge mechanism (3); the first transmission assembly (46) is connected to the ice-melting base (43) and is used to control the rotation of the ice-melting knife switch (44) so ​​as to connect or disconnect the ice-melting knife switch (44) and the first static contact (41); and the ice-melting wiring board (47) is also included. The ice-melting wiring board (47) is mounted on the mounting seat (45) and is conductively connected to the ice-melting knife switch (44).

3. The ice melting switch for line short-circuiting and grounding according to claim 2, characterized in that: The first transmission assembly (46) includes a first crank arm shaft (461), a first pull rod (462), a second crank arm shaft (463) and a second porcelain bottle (464), wherein the first crank arm shaft (461) is coaxially connected to the first groove wheel (223), the second crank arm shaft (463) is rotatably connected to the ice melting base (43), the first crank arm shaft (461) and the second crank arm shaft (463) are connected through the first pull rod (462), the second porcelain bottle (464) is connected to an end of the second crank arm shaft (463) away from the first pull rod (462), and the second porcelain bottle (464) is coaxially connected to the second crank arm shaft (463), and the second porcelain bottle (464) is used to drive the ice melting knife gate (44) to rotate.

4. The ice melting switch for line short-circuiting and grounding according to claim 3, characterized in that: The first transmission assembly (46) further comprises a crank (465), a connecting rod (466) and an adjusting block (467), wherein the crank (465) is fixedly connected to one end of the second porcelain bottle (464) away from the second crank arm shaft (463), the adjusting block (467) is mounted on the ice-melting knife gate (44), one end of the connecting rod (466) is hinged to the adjusting block (467), and the other end of the connecting rod (466) is hinged to one end of the crank (465) away from the second porcelain bottle (464).

5. The ice melting switch for line short-circuiting and grounding according to claim 4, characterized in that: The first transmission assembly (46) further includes a fastener, the adjustment block (467) is slidably connected to the ice-melting knife gate (44), and the fastener is used to fix the adjustment block (467) on the ice-melting knife gate (44).

6. An ice-melting switch for line short-circuiting and grounding according to any one of claims 4-5, characterized in that: The ice-melting knife gate (44) has a disconnected state and an engaged state. When the ice-melting knife gate (44) is in the engaged state, the crank (465) and the connecting rod (466) are located on the same straight line.

7. An ice-melting switch for line short-circuiting and grounding according to any one of claims 1 to 5, characterized in that: The toggle wheel (222) is provided with two toggle pins (2221), the first groove wheel (223) is provided with four first toggle grooves (2231), and the second groove wheel (224) is provided with four second toggle grooves (2241). The toggle wheel (222) alternately enters the first toggle grooves (2231) and the second toggle grooves (2241) through the toggle pins (2221), and respectively toggle the first groove wheel (223) and the second groove wheel (224) to rotate.

8. The ice-melting switch for line short-circuiting and grounding according to claim 7, characterized in that: A sleeve (2222) is rotatably sleeved on the outside of the toggle pin (2221), the outer diameter of the sleeve (2222) is smaller than the groove width of the first groove wheel (223), and the outer diameter of the sleeve (2222) is smaller than the groove width of the second groove wheel (224).

9. The ice melting switch for line short-circuiting and grounding according to claim 8, characterized in that: A shaft sleeve (2223) is arranged between the toggle pin (2221) and the sleeve (2222), and the shaft sleeve (2223) is rotatably connected to the toggle pin (2221).

10. An ice-melting switch for line short-circuiting and grounding according to any one of claims 2 to 5, characterized in that: The grounding connection mechanism (3) comprises a fixed base (31), a supporting porcelain bottle (32), a grounding contact (33), a grounding knife switch (34) and a second transmission assembly (35); the fixed base (31) is mounted on the conductive column (1); the supporting porcelain bottle (32) is mounted on the fixed base (31); the mounting seat (45) is mounted on the top of the supporting porcelain bottle (32); the grounding contact (33) is arranged on the mounting seat (45); and the grounding contact (33) is connected to the ice-melting knife switch (44); the grounding knife switch (34) is rotatably connected to the fixed base (31); and the second transmission assembly (35) is used to drive the grounding knife switch (34) to rotate so that the grounding knife switch (34) and the grounding contact (33) are connected or disconnected; The second transmission assembly (35) includes a third crank arm shaft (351), a fourth crank arm shaft (352) and a second pull rod (353). The third crank arm shaft (351) is coaxially connected to the second groove wheel (224). The fourth crank arm shaft (352) is rotatably connected to the fixed base (31). The third crank arm shaft (351) and the fourth crank arm shaft (352) are connected through the second pull rod (353). The rotation of the third crank arm drives the fourth crank arm to rotate through the second pull rod (353). The grounding knife switch (34) is fixedly connected to the fourth crank arm shaft (352).

Images