A high-voltage disconnector mechanical interlocking device

Abstract

The utility model provides a high -voltage isolating switch mechanical interlock device. Involve electric power equipment technical field. High -voltage isolating switch mechanical interlock device includes two side beams and fixed mounting between two side beams's three cross beams, three all rotatory installations have pivot no.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a mechanical interlocking device for a high-voltage disconnector switch. Background Technology

[0002] High-voltage disconnect switches are commonly used high-voltage switching equipment in power systems, mainly used for power isolation and switching operations. During power system operation, to ensure the safety of operators and equipment and prevent misoperation, effective interlocking control of high-voltage disconnect switches is necessary.

[0003] Most existing high-voltage isolation and interlocking devices are controlled by electricity only and cannot cooperate with mechanical locking mechanisms. In actual use, they are prone to misoperation, which can lead to safety accidents and cause significant economic losses and casualties.

[0004] Therefore, it is necessary to provide a new mechanical interlocking device for high-voltage disconnect switches to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-voltage disconnector mechanical interlocking device that allows both electrical and mechanical methods to work together to improve interlocking stability.

[0006] To solve the above-mentioned technical problems, the high-voltage disconnector mechanical interlocking device provided by this utility model includes: two side beams and three crossbeams fixedly installed between the two side beams. A rotating shaft 1 and a rotating shaft 2 are rotatably mounted on each of the three crossbeams. An insulating support 1 is fixedly mounted at the top of each of the three rotating shafts 1, and an insulating support 2 is fixedly mounted at the top of each of the three rotating shafts 2. A main contact is fixedly mounted at the top of each of the three insulating support 1s, and a grounding switch contact is fixedly mounted at the top of each of the three insulating support 2s. The three main contacts are respectively adapted to the three grounding switch contacts. A connecting housing 1 is fixedly mounted at the bottom of each of the three crossbeams. A common connecting housing 2 is fixedly mounted at the bottom of each of the three connecting housings 1. The bottom ends of each of the three rotating shafts 1 extend into the connecting housing 2 and are rotatably connected to the top of the connecting housing 2. The three rotating shafts 1 are rotatably connected to the bottom of each of the three connecting housings 1. A transmission rod is rotatably mounted inside the connecting housing 2. The transmission rod is fixedly fitted with a bevel gear 1, and the bottom ends of the three rotating shafts 1 are all fixedly fitted with bevel gears 2. The three bevel gears 1 mesh with the three bevel gears 2 respectively. A main unit is provided below the side beam. An active rod is rotatably installed in the main unit. The top end of the active rod extends into any one of the connecting housings 1 and is fixedly fitted with a bevel gear 3. Bevel gears 6 are fixedly fitted on the three rotating shafts 1 and the three rotating shafts 2. Multiple bevel gears 6 are located in the corresponding connecting housings 1. A transmission unit is provided in each of the three connecting housings 1 to drive the rotating shafts 1 and 2 to rotate. A spur gear 2 is rotatably installed on the bottom inner wall of the main unit. A spur gear 1 is fixedly fitted on the active rod. The diameter of the spur gear 1 is smaller than that of the spur gear 2, and the two mesh. A blocking and limiting mechanism is provided in the main unit to provide rotational limit for the spur gear 2. A mechanical locking mechanism is provided in the main unit to indirectly form a mechanical interlocking effect on the active rod.

[0007] Preferably, each of the three transmission units includes a driven rod, the three driven rods are respectively disposed in the three connecting housings, and a bevel tooth four is fixedly sleeved on the three driven rods, one of the bevel teeth four meshing with the bevel tooth three, and bevel teeth five are fixedly installed at both ends of the three driven rods, and multiple bevel teeth five meshing with multiple bevel teeth six respectively.

[0008] Preferably, each of the three connecting housings has two support plates fixedly installed inside, and each of the three passive rods passes through the corresponding support plate and is rotatably connected to the corresponding support plate.

[0009] Preferably, the blocking and limiting mechanism includes two limiting rods, both of which are fixedly installed on one side inner wall of the main unit box. A concentric shaft is fixedly installed on the top of the second spherical gear, and an abutment arm is fixedly installed on the concentric shaft. An arc groove is opened on both sides of the abutment arm, and one of the limiting rods is located in the corresponding arc groove and contacts the inner wall of the arc groove.

[0010] Preferably, the mechanical locking mechanism includes an interlocking hole, which is formed on the second spur gear. A bracket is fixedly installed on the top of the main unit housing. A bidirectional screw is rotatably installed inside the bracket. The top end of the bidirectional screw extends above the bracket and is fixedly installed with a rocker wheel. A lifting arm one and a lifting arm two are threaded onto the bidirectional screw. A compensating rod is fixedly installed at the bottom of the lifting arm two. Locking pins are fixedly installed at the bottom of the lifting arm one and the bottom end of the compensating rod. The bottom end of one of the locking pins extends into the main unit housing and passes through the interlocking hole. Two sliding holes are formed on the top of the main unit housing, and the two locking pins are respectively adapted to the two sliding holes.

[0011] Preferably, a protrusion is fixedly installed on the top of the bracket, and a set screw is threaded onto the protrusion, with one end of the set screw abutting against the bidirectional screw.

[0012] Preferably, a servo motor is fixedly installed on the bottom inner wall of the main unit, and a spherical gear is fixedly sleeved on both the output shaft of the servo motor and the drive rod, with the two spherical gears meshing.

[0013] Compared with related technologies, the high-voltage disconnector mechanical interlocking device provided by this utility model has the following advantages: This utility model can drive the three rotating shafts to rotate synchronously through the active rotation of the active rod and the meshing of the three transmission units, as well as the bevel gear one and bevel gear two. This can synchronously open or close the three main contacts and the three grounding switch contacts, thus improving the convenience of operation. Furthermore, the combination of the contact arm and the limit stop ensures that the main contact and the grounding switch contact are fully open or closed, preventing situations such as short opening distances or incomplete closure, thus improving safety. In addition, whether open or closed, the locking pin and interlocking hole form a mechanical locking mechanism that works in conjunction with the electric locking of the servo motor. The two interact to form a stable interlocking mechanism, effectively preventing major accidents caused by misoperation of the servo motor and providing reliable safety for operators and equipment. Attached Figure Description

[0014] Figure 1A schematic diagram of the structure of the high-voltage disconnector mechanical interlocking device provided by this utility model; Figure 2 This is a schematic diagram of the oblique upward view of the connecting outer shell 1 and connecting outer shell 2 in this utility model; Figure 3 This is a schematic diagram of the connection structure between the main unit chassis and the bracket in this utility model; Figure 4 This is a schematic diagram of the internal structure of the connecting outer shell in this utility model; Figure 5 This is a schematic diagram of the internal structure of the connecting outer shell 2 in this utility model; Figure 6 This is a schematic diagram of the external structure of the main unit chassis in this utility model; Figure 7 This is an assembly diagram of lifting arm one and lifting arm two in this utility model; Figure 8 This is a schematic diagram of the internal structure of the main unit chassis in this utility model.

[0015] The following are the labeling elements in the diagram: 1. Side beam; 2. Crossbeam; 3. Rotating shaft one; 4. Rotating shaft two; 5. Insulating support one; 6. Insulating support two; 7. Main contact; 8. Grounding switch contact; 9. Connecting housing one; 10. Connecting housing two; 11. Transmission rod; 12. Bevel gear one; 13. Bevel gear two; 14. Main unit housing; 15. Driving rod; 16. Bevel gear three; 17. Passive rod; 18. Bevel gear four; 19. Bevel gear five; 20. Bevel gear six; 21. Circular gear one; 22. Circular gear two; 23. Limiting stop bar; 24. Abutment arm; 25. Interlocking hole; 26. Bracket; 27. Bidirectional screw; 28. Lifting arm one; 29. ​​Lifting arm two; 30. Compensating rod; 31. Locking pin. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1-8The high-voltage disconnector mechanical interlocking device includes: two side beams 1 and three crossbeams 2 fixedly installed between the two side beams 1. Channel steel supports are fixedly installed at the bottom of each of the two side beams 1. Rotating shafts 1 and 2 are rotatably installed on each of the three crossbeams 2. Insulating support 1 5 is fixedly installed at the top of each of the three rotating shafts 1 3. Insulating support 2 6 is fixedly installed at the top of each of the three rotating shafts 2 4. Main contacts 7 are fixedly installed at the top of each of the three insulating support 1 5. Grounding switch contacts 8 are fixedly installed at the top of each of the three insulating support 2 6. The three main contacts 7 are respectively matched with the three grounding switch contacts 8. Furthermore, at the top of each of the three insulating support 1 5 and the three insulating support 2 6... A terminal block is fixedly installed; a connecting housing 9 is fixedly installed at the bottom of each of the three crossbeams 2, and a second connecting housing 10 is fixedly installed at the bottom of each of the three connecting housings 9. The bottom ends of the three rotating shafts 3 extend into the second connecting housing 10 and are rotatably connected to the top of the second connecting housing 10. The three rotating shafts 3 are rotatably connected to the bottom of the three connecting housings 9 respectively. A transmission rod 11 is rotatably installed inside the second connecting housing 10, and a bevel gear 12 is fixedly sleeved on the transmission rod 11. A bevel gear 13 is fixedly installed at the bottom of each of the three rotating shafts 3, and the three bevel gears 12 mesh with the three bevel gears 13 respectively. A main unit box 14 is located below the side beam 1. An active rod 15 is rotatably mounted inside the main housing 14. The top end of the active rod 15 extends into any of the connecting housings 1-9 and is fixedly mounted with a bevel gear 16. Bevel gears 20 are fixedly fitted onto each of the three rotating shafts 1-3 and 3 rotating shafts 2-4. Multiple bevel gears 20 are located within their respective connecting housings 1-9. Each of the three connecting housings 1-9 contains a transmission unit to drive the rotating shafts 1-3 and 2-4 to rotate in tandem. A circular gear 22 is rotatably mounted on the bottom inner wall of the main housing 14. This rotatable mounting method involves a connecting shaft rotatably mounted on the bottom inner wall of the main housing 14, the top end of which is fixed to the circular gear 22, thus enabling the circular gear 22 to rotate. The active rod 15... A fixed sleeve is provided with a first spur gear 21, the diameter of which is smaller than that of a second spur gear 22. The two gears mesh with each other. Through their specially designed gear ratio, when the first shaft 3 and the second shaft 4 are disconnected or closed, the second spur gear 22 will rotate by a corresponding angle. In order to ensure that the main contact 7 and the grounding switch contact 8 are completely disconnected or closed, a blocking and limiting mechanism is provided in the main unit housing 14 to limit the rotation of the second spur gear 22. The main unit housing 14 is also provided with a mechanical locking mechanism to indirectly form a mechanical interlocking effect on the drive rod 15, further improving safety performance. By cooperating with the mechanical locking mechanism, it can reduce major accidents caused by misoperation.

[0018] In the three transmission units mentioned above, each includes a driven rod 17. The three driven rods 17 are respectively installed in the three connecting housings 1-9. The three driven rods 17 are fixedly fitted with bevel teeth 18. One of the bevel teeth 18 meshes with bevel teeth 16. Both ends of the three driven rods 17 are fixedly installed with bevel teeth 19. Multiple bevel teeth 19 mesh with multiple bevel teeth 20. In addition, two support plates are fixedly installed in the three connecting housings 1-9. The three driven rods 17 pass through the corresponding support plates and are rotatably connected to the corresponding support plates. By rotating the driving rod 15, the meshing between bevel teeth 16 and bevel teeth 18 can drive the corresponding transmission rod 11 to rotate. At the same time, under the meshing of bevel teeth 19 and bevel teeth 20, and under the meshing between bevel teeth 12 and bevel teeth 23, the three rotating shafts 1-3 and three rotating shafts 2-4 rotate synchronously to form a linkage effect and improve the ease of operation.

[0019] The aforementioned blocking and limiting mechanism includes two limiting rods 23 fixedly installed on the inner wall of one side of the main unit housing 14. A concentric shaft is fixedly installed on the top of the second spur gear 22, and an abutment arm 24 is fixedly installed on the concentric shaft. Both sides of the abutment arm 24 are provided with arc grooves. One of the limiting rods 23 is located in the corresponding arc groove and contacts the inner wall of the arc groove. By utilizing the abutment effect between the limiting rod 23 and the abutment arm 24, the active rod 15 has a maximum limit value when rotating forward or flipping, so as to ensure that the main contact 7 and the grounding switch contact 8 are completely disconnected or well closed.

[0020] The aforementioned mechanical locking mechanism includes an interlocking hole 25 on the second spur gear 22. The center of the interlocking hole 25 is located on the extension line of the center line of the abutment arm 24, so that when the abutment arm 24 rotates from one limit stop 23 to another limit stop 23, the interlocking hole 25 is exactly transformed into a symmetrical position on the second spur gear 22, corresponding in position to the two locking pins 31 mentioned below. A bracket 26 is fixedly installed on the top of the main unit housing 14, and a bidirectional screw 27 is rotatably installed inside it. The top end of the bidirectional screw 27 extends above the bracket 26 and is fixedly installed with a rocker wheel. Lifting arm 1 28 and lifting arm 29 are threaded onto the bidirectional screw 27. Guide columns are fixed at the top of both lifting arm 28 and lifting arm 29. The top ends of both guide columns extend above the bracket 26 and slide to connect with the top of the bracket 26. A compensating rod 30 is fixedly installed at the bottom of lifting arm 29. Locking pins 31 are fixedly installed at the bottom of lifting arm 28 and the bottom end of compensating rod 30. The bottom end of one locking pin 31 extends into the main unit housing 14 and passes through the interlocking hole 25. Two sliding holes are opened at the top of the main unit housing 14. The two locking pins 31 are respectively matched with the two sliding holes. Furthermore, a protrusion is fixedly installed at the top of the bracket 26. A set screw is threaded on the protrusion, and one end of the protrusion abuts against the bidirectional screw 27 to prevent the bidirectional screw 27 from rotating.

[0021] In this method, in order to provide an electric drive for the active rod 15 to form an electrical automation effect, a servo motor is fixedly installed on the bottom inner wall of the main unit 14. Both the output shaft and the active rod 15 are fixedly fitted with three round gears. The two round gears mesh in three phases, and the servo motor provides an electric linkage effect. Together with the manual mechanical locking mechanism, a good interlocking effect can be formed to prevent electrical misoperation. In addition, windows for inspection and maintenance are provided on one side of the connecting outer casing 9, the connecting outer casing 10, and the chassis 14, and opening and closing doors are provided at the windows to provide an effective path and space for subsequent inspection and maintenance.

[0022] The working principle of the high-voltage disconnector mechanical interlocking device provided by this utility model is as follows: In the initial state, the main contact 7 and the grounding switch contact 8 are in closed contact. When it is necessary to disconnect the main contact 7 and the grounding switch contact 8, first rotate the set screw in the reverse direction to separate it from the double-acting screw 27. Then rotate the double-acting screw 27 clockwise. At this time, the lifting arm 1 28 and the lifting arm 29 move closer to each other. The locking pin 31, which was originally inserted into the interlocking hole 25, gradually moves out of the interlocking hole 25. When it is completely removed and the other locking pin 31 has not yet been inserted into the corresponding sliding hole, stop rotating the double-acting screw 27. Then start the servo motor in the forward direction. Through the meshing of the two spur gears 3, the driving rod 15 can be driven to rotate. Then, through the cooperation between the bevel gear 3 16 and the bevel gear 4 18, the corresponding driven rod 17 can be driven to rotate. Immediately following, under the meshing of bevel gear 19 and bevel gear 20, the corresponding rotating shaft 1 3 and rotating shaft 2 4 begin to rotate, causing the corresponding main contact 7 and grounding switch contact 8 to begin to rotate and separate. At the same time, the rotating shaft 1 3, driven by bevel gear 12 and bevel gear 2 13, will drive the transmission rod 11 to rotate. Then, under the meshing of the other two bevel gears 12 and bevel gear 2 13, the other two rotating shafts 1 3 will rotate synchronously. At the same time, under the transmission cooperation of the other two transmission units, the other two rotating shafts 2 4 can be driven to rotate. At this point, the three rotating shafts 1 3 and the three rotating shafts 2 4 rotate together, and the three main contacts 7 gradually separate from the corresponding grounding switch contacts 8. While the active lever 15 rotates, the first sprocket 21 drives the second sprocket 22 to rotate, thereby rotating the abutment arm 24 on the second sprocket 22. When the abutment arm 24 rotates to contact another limit stop 23, the servo motor shuts off. At this time, the main contact 7 and the grounding switch contact 8 are in a completely visible disconnected state. At the same time, the interlocking hole 25 rotates to the bottom of another locking pin 31, and then the bidirectional screw 27 is rotated clockwise until the other locking pin 31 is inserted into the interlocking hole 25. Then the set screw is tightened again. Thus, the linkage disconnection action between the three main contacts 7 and the three grounding switch contacts 8 is completed. At the same time, the insertion of the locking pin 31 and the interlocking hole 25 can improve the mechanical interlocking effect and improve the stability of the disconnection process, preventing major accidents caused by misoperation of the servo motor.

[0023] Compared with related technologies, the high-voltage disconnector mechanical interlocking device provided by this utility model has the following advantages: This utility model provides a high-voltage disconnector mechanical interlocking device. By actively rotating the active rod 15, and through the meshing of three transmission units, as well as bevel gear 12 and bevel gear 13, the three rotating shafts 13 and 3 rotating shafts 24 can be driven to rotate synchronously, which can simultaneously open or close the three main contacts 7 and the three grounding switch contacts 8, thus improving the convenience of operation. Furthermore, the cooperation of the contact arm 24 and the limit stop 23 ensures that the opening or closing of the main contact 7 and the grounding switch contact 8 is fully completed, preventing situations such as short opening distances or incomplete closing, thus improving safety. In addition, whether opening or closing, the insertion of the locking pin 31 into the interlocking hole 25 forms a mechanical locking mechanism that can cooperate with the electric locking of the servo motor. The two interact to form a stable interlocking mechanism, effectively preventing major accidents caused by misoperation of the servo motor and providing reliable safety for operators and equipment.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mechanical interlocking device for a high-voltage disconnector, comprising two side beams and three crossbeams fixedly installed between the two side beams, characterized in that, Each of the three crossbeams is rotatably mounted with a rotating shaft 1 and a rotating shaft 2. An insulating support 1 is fixedly mounted on the top of each of the three rotating shaft 1s, and an insulating support 2 is fixedly mounted on the top of each of the three rotating shaft 2s. A main contact is fixedly mounted on the top of each of the three insulating support 1s, and a grounding switch contact is fixedly mounted on the top of each of the three insulating support 2s. The three main contacts are respectively adapted to the three grounding switch contacts. Each of the three crossbeams has a connecting housing 1 fixedly installed at its bottom. The bottom of each of the three connecting housing 1s is fixedly installed with the same connecting housing 2. The bottom ends of each of the three rotating shafts 1 extend into the connecting housing 2 and are rotatably connected to the top of the connecting housing 2. Each of the three rotating shafts 1 is rotatably connected to the bottom of the three connecting housings 1. A transmission rod is rotatably installed inside the connecting housing 2. A bevel gear 1 is fixedly fitted onto the transmission rod. Each of the three rotating shafts 1 has a bevel gear 2 fixedly installed at its bottom end. The three bevel gears 1 and 3 bevel gears 2 mesh with each other. A main unit is located below the side beam. A drive rod is rotatably installed inside the main unit. The top end of the drive rod extends... A bevel gear three is fixedly installed inside any one of the connecting housings 1. A bevel gear six is ​​fixedly sleeved on each of the three rotating shafts 1 and 3 rotating shafts 2. Multiple bevel gears 6 are located inside the corresponding connecting housings 1. A transmission unit is provided inside each of the three connecting housings 1 to drive the rotating shafts 1 and 2 to rotate. A spur gear 2 is rotatably installed on the bottom inner wall of the main unit housing. A spur gear 1 is fixedly sleeved on the drive rod. The diameter of the spur gear 1 is smaller than that of the spur gear 2, and the two mesh with each other. A blocking and limiting mechanism is provided inside the main unit housing to provide rotation limit for the spur gear 2. A mechanical locking mechanism is provided on the main unit housing to indirectly form a mechanical interlocking effect on the drive rod.

2. The high-voltage disconnector mechanical interlocking device according to claim 1, characterized in that, Each of the three transmission units includes a driven rod. The three driven rods are respectively disposed in the three connecting housings. A bevel tooth four is fixedly sleeved on the three driven rods. One of the bevel teeth four meshes with the bevel tooth three. Bevel teeth five are fixedly installed at both ends of the three driven rods. Multiple bevel teeth five mesh with multiple bevel teeth six respectively.

3. The high-voltage disconnector mechanical interlocking device according to claim 2, characterized in that, Each of the three connecting housings has two support plates fixedly installed inside, and each of the three passive rods passes through the corresponding support plate and is rotatably connected to the corresponding support plate.

4. The high-voltage disconnector mechanical interlocking device according to claim 1, characterized in that, The blocking and limiting mechanism includes two limiting rods, both of which are fixedly installed on the inner wall of one side of the main unit. A concentric shaft is fixedly installed on the top of the second spherical gear, and an abutment arm is fixedly installed on the concentric shaft. An arc groove is opened on both sides of the abutment arm, and one of the limiting rods is located in the corresponding arc groove and contacts the inner wall of the arc groove.

5. The high-voltage disconnector mechanical interlocking device according to claim 4, characterized in that, The mechanical locking mechanism includes an interlocking hole on the second spur gear. A bracket is fixedly installed on the top of the main unit housing. A bidirectional screw is rotatably installed inside the bracket. The top end of the bidirectional screw extends above the bracket and is fixedly installed with a rocker wheel. A lifting arm one and a lifting arm two are threaded onto the bidirectional screw. A compensating rod is fixedly installed at the bottom of the lifting arm two. Locking pins are fixedly installed at the bottom of the lifting arm one and the bottom end of the compensating rod. The bottom end of one of the locking pins extends into the main unit housing and passes through the interlocking hole. Two sliding holes are opened on the top of the main unit housing, and the two locking pins are respectively adapted to the two sliding holes.

6. The high-voltage disconnector mechanical interlocking device according to claim 5, characterized in that, A protrusion is fixedly installed on the top of the bracket, and a set screw is threaded onto the protrusion. One end of the set screw abuts against the bidirectional screw.

7. The high-voltage disconnector mechanical interlocking device according to claim 1, characterized in that, A servo motor is fixedly installed on the bottom inner wall of the main unit. A spur gear is fixedly sleeved on the output shaft of the servo motor and the drive rod. The two spur gears mesh with each other.

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