A high voltage switch mechanism protection device

Abstract

The present invention discloses a high-voltage switch mechanism protection device, which relates to the field of high-voltage switch protection, including a first base frame, a first stroke switch, a second base frame, a second stroke switch, a driving screw rod, a driving slider, a crank arm shaft rod and a crank arm plate, wherein the first stroke switch is fixedly mounted below one side of the first base frame, and the second stroke switch is fixedly mounted above one side of the second base frame. In the high-voltage switch mechanism protection device described in the present invention, the compression disc teeth slide to one side through the contraction of the pressure spring, so that the transmission torque will not be transmitted to the driving screw rod, the structure is more stable, and the maintenance and use are more convenient. Directly disconnecting the transmission can protect the mechanism more safely, and a double protection effect is achieved, which prevents damage to the mechanism when the first protection fails. The protection trigger force can be adjusted according to the use situation, which is more suitable for the use of the mechanism in different occasions, and improves the adaptability of the device.

Description

Technical Field

[0001] The invention relates to the field of high voltage switch protection, and in particular to a high voltage switch mechanism protection device. Background Art

[0002] The high-voltage isolating grounding switch mechanism is a linkage mechanism composed of multiple parts. It is used to drive the high-voltage isolating grounding switch through the switch main transmission shaft to realize the separation and connection of the high-voltage switch. Therefore, it is widely used in power applications. However, when the mechanism is used for a long time, the switch will fail, resulting in the transmission part being stuck. When stuck, the motor still maintains continuous output, which will cause the parts in the mechanism to be overloaded and damaged. Therefore, a protective device is needed to protect the mechanism.

[0003] The Chinese patent with publication number "CN112786341A" discloses "a high-voltage switch mechanism protection device, including a driving screw and a coupling drive assembly, the coupling drive assembly including a reduction gear, a support shaft, a bearing inner sleeve and a coupling ball string that cooperates with the reduction gear and the bearing inner sleeve". Although it can achieve the effect of "when the relative torque between the support shaft and the driving screw is greater than the predetermined torque, the coupling balls roll out of the ball coupling pit, so that the reduction gear and the driving screw are decoupled", the device is mainly protected by the decoupling structure when in use. The decoupling is a single-layer protection structure, and the transmission part will continue to transmit the output after the decoupling. Therefore, when the decoupling is incomplete or the decoupling fails, the torque will continue to be applied, which will still cause damage to the mechanism. In addition, the decoupling structure is complex, and the use and maintenance costs are high. At the same time, the decoupling trigger force is fixed, and the protection trigger force value cannot be adjusted by itself. It is not suitable for use in mechanisms in different occasions, which reduces the adaptability of the device. Summary of the invention

[0004] The main purpose of the present invention is to provide a high voltage switch mechanism protection device, which can effectively solve the technical problems raised by the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A high-voltage switch mechanism protection device comprises a first pedestal, a first travel switch, a second pedestal, a second travel switch, a driving screw, a driving slider, a crank arm shaft and a crank arm plate, wherein the first travel switch is fixedly mounted below one side of the first pedestal, the second travel switch is fixedly mounted above one side of the second pedestal, the driving screw is arranged between the first pedestal and the second pedestal, the driving slider is threadedly mounted on the outside of the driving screw, the crank arm plate is movably mounted on the outside of the crank arm shaft and sleeved on the outside of the driving slider, a screw mounting rod is integrally formed at one end of the driving screw close to the second pedestal, a spring pressure plate is fixedly mounted at the front and rear of one side of the second pedestal, a pressure disc gear structure is fixedly mounted between the two spring pressure plates, a disconnect structure is movably mounted on one side of the spring pressure plate, a mounting connecting rod is fixedly mounted at the front and rear of the second pedestal, a gear mounting column is fixedly mounted at one end of the mounting connecting rod away from the second pedestal, a transmission gear is movably sleeved on the outer side of the gear mounting column, a transmission disc gear is fixedly mounted on one side of the transmission gear, and a pressure adjustment structure is arranged on the outer side of the gear mounting column located on the other side of the transmission gear.

[0007] As a further solution of the present invention, a driving slot is provided at the bottom of the crank arm plate, and the protrusion of the driving slider is inserted into the driving slot. The crank arm plate is located between the first travel switch and the second travel switch.

[0008] As a further solution of the present invention, a motor mounting frame is integrally formed at the bottom of the second base frame, a driving motor is fixedly mounted on one side of the motor mounting frame, and a driving gear meshing with the transmission gear is movably mounted on the other side of the motor mounting frame, and a rotating shaft of the driving motor passes through the motor mounting frame and is fixedly connected to the driving gear.

[0009] As a further solution of the present invention, the pressure disc tooth structure includes a positioning pressure ring, a pressure spring, a clamping disc tooth and a top pressure block. The positioning pressure ring is welded in the middle of the two spring pressure plates, the pressure spring is fixedly installed on one side of the positioning pressure ring, the clamping disc tooth is movably installed on the end of the pressure spring away from the positioning pressure ring, and two top pressure blocks are welded on the outside front and rear of the clamping disc tooth.

[0010] As a further solution of the present invention, the pressure spring passes through the second base frame, the clamping disc teeth are located on one side of the second base frame, the clamping disc teeth are meshed and connected with the transmission disc teeth, and the screw mounting rod passes through the positioning pressure ring and the pressure spring and is fixedly connected with the clamping disc teeth.

[0011] As a further solution of the present invention, the disconnection structure includes a disconnection spring, a disconnection guide column and a guide column positioning block. The disconnection spring is fixedly installed on one side of the spring pressure plate, the disconnection guide column is fixedly installed on the end of the disconnection spring away from the spring pressure plate and passes through the second base frame, and the guide column positioning block is movably installed on the outside of the disconnection guide column and is located on one side of the top pressure block.

[0012] As a further solution of the present invention, the guide column positioning block is inserted into the second base frame, the adjacent surfaces of the guide column positioning block and the top pressure block are inclined, and the disconnected guide column is located on one side of the transmission gear.

[0013] As a further solution of the present invention, the gear mounting column is located on one side of the second base frame, and the transmission gear rotates left and right around the gear mounting column.

[0014] As a further solution of the present invention, the pressure adjustment structure includes a knob ring, a pressure spring and a clamping ring. The knob ring is threadedly installed on one side of the outside of the gear mounting column, the clamping ring is movably sleeved on the other side of the outside of the gear mounting column, and the pressure spring is sleeved on the outside of the gear mounting column and pressed between the knob ring and the clamping ring.

[0015] As a further solution of the present invention, a screw is installed on the outer thread of the clamping ring, the end of the screw passes through the clamping ring and is connected to the gear mounting column, and the clamping ring is located on the other side of the transmission gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the first travel switch and the second travel switch in the high-voltage switch mechanism protection device fail and the crank arm shaft is stuck and cannot rotate, the relative torque between the transmission disc teeth and the clamping disc teeth is greater than the pressure of the pressure spring, and the pressure spring will contract. Therefore, when the transmission disc teeth mesh with the clamping disc teeth, the clamping disc teeth move to one side and slip due to the contraction of the pressure spring, so that the transmission torque will not be transmitted to the driving screw rod, thereby ensuring the safety of the high-voltage switch mechanism protection device. The spring-pressed slipping structure is more stable than the decoupled structure, and the structure is simpler, and maintenance and use are more convenient.

[0017] When the clamping disc teeth slip and move to one side, the disconnection guide column pops out and pushes the transmission gear to move the transmission gear to one side around the gear mounting column. When the transmission gear moves, it drives the transmission disc teeth to separate from the clamping disc teeth. At the same time, the transmission gear is also separated from the driving gear, realizing the disconnection of the transmission and directly interrupting the transmission to the driving screw rod. Directly disconnecting the transmission can protect the mechanism more safely and achieve a double protection effect, thereby preventing damage to the mechanism when the first protection fails.

[0018] By pressing the transmission gear, the transmission disc teeth and the compression disc teeth maintain a stable connection, and the knob ring can be moved on the gear mounting column through the threaded connection by rotating the knob ring. The movement of the knob ring squeezes the pressure spring to contract, and then the pressure of the pressure spring is adjusted to adjust the fitting pressure of the transmission gear and the transmission disc teeth and the compression disc teeth, so that the triggering force of the pressure spring can be adjusted, thereby realizing the adjustment of the protection triggering force. The protection triggering force can be adjusted according to the usage situation, which is more suitable for the use of mechanisms in different occasions and improves the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a high-voltage switch mechanism protection device of the present invention;

[0020] Figure 2 A side view of a high voltage switch mechanism protection device of the present invention;

[0021] Figure 3 A partial view of a second base frame in a high-voltage switch mechanism protection device of the present invention;

[0022] Figure 4 It is a sectional view of a second base frame in a high-voltage switch mechanism protection device of the present invention;

[0023] Figure 5 This is a separation diagram of a clamping disc tooth and a clamping disc tooth in a high-voltage switch mechanism protection device of the present invention;

[0024] Figure 6 A partial view of a second base frame in a high-voltage switch mechanism protection device of the present invention;

[0025] Figure 7 This is a separation diagram of the compression disc teeth in a high-voltage switch mechanism protection device of the present invention.

[0026] In the figure: 1. first base frame; 2. first stroke switch; 3. second base frame; 5. second stroke switch; 6. driving screw; 7. driving slider; 8. crank arm shaft; 9. crank arm plate; 10. driving slot; 11. screw mounting rod; 12. spring pressure plate; 13. pressure disc gear structure; 14. positioning pressure ring; 15. pressure spring; 16. clamping disc teeth; 17. top pressure block; 131. disconnection structure; 18. disconnection spring; 19. disconnection guide column; 20. guide column positioning block; 21. installation connecting rod; 22. gear mounting column; 23. transmission gear; 24. transmission disc teeth; 25. pressure adjustment structure; 26. knob ring; 27. pressure spring; 28. clamping ring; 29. ​​motor mounting frame; 30. driving motor; 31. driving gear. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] like Figure 1-Figure 7 As shown, a high-voltage switch mechanism protection device includes a first base frame 1, a first travel switch 2, a second base frame 3, a second travel switch 5, a driving screw rod 6, a driving slider 7, a crank arm shaft rod 8 and a crank arm plate 9, the first travel switch 2 is fixedly installed at the bottom of one side of the first base frame 1, the second travel switch 5 is fixedly installed at the top of one side of the second base frame 3, the driving screw rod 6 is arranged between the first base frame 1 and the second base frame 3, the driving slider 7 is threadedly installed on the outside of the driving screw rod 6, the crank arm plate 9 is movably installed on the outside of the crank arm shaft rod 8 and sleeved on the outside of the driving slider 7, and the driving screw rod 6 is integrally formed with a screw rod at one end close to the second base frame 3. A mounting rod 11, a spring pressure plate 12 is fixedly installed at the front and rear of one side of the second base frame 3, a pressure disc tooth structure 13 is fixedly installed in the middle of the two spring pressure plates 12, and a disconnect structure 131 is movably installed on one side of the spring pressure plate 12, and a mounting connecting rod 21 is fixedly installed at the front and rear ends of the second base frame 3, and a gear mounting column 22 is fixedly installed at one end of the mounting connecting rod 21 away from the second base frame 3, a transmission gear 23 is movably sleeved on the outer side of the gear mounting column 22, a transmission disc tooth 24 is fixedly installed on one side of the transmission gear 23, and a pressure adjustment structure 25 is provided on the outer side of the gear mounting column 22 and on the other side of the transmission gear 23.

[0029] In this embodiment, a driving slot 10 is provided at the bottom of the crank arm plate 9, and the protrusion of the driving slider 7 is inserted into the driving slot 10. The crank arm plate 9 is located between the first travel switch 2 and the second travel switch 5. When the driving slider 7 moves, the crank arm plate 9 is driven to swing left and right through the connection between the protrusion and the driving slot 10.

[0030] In this embodiment, a motor mounting frame 29 is integrally formed at the bottom of the second base frame 3, a driving motor 30 is fixedly mounted on one side of the motor mounting frame 29, and a driving gear 31 meshingly connected to the transmission gear 23 is movably mounted on the other side of the motor mounting frame 29, and a rotating shaft of the driving motor 30 passes through the motor mounting frame 29 and is fixedly connected to the driving gear 31, and the operation of the driving motor 30 drives the driving gear 31 to rotate, and the driving gear 31 drives the transmission gear 23 to rotate, thereby providing output power.

[0031] In this embodiment, the pressure disc tooth structure 13 includes a positioning pressure ring 14, a pressure spring 15, a clamping disc tooth 16 and a pressure block 17. The positioning pressure ring 14 is welded in the middle of the two spring pressure plates 12, the pressure spring 15 is fixedly installed on one side of the positioning pressure ring 14, and the clamping disc tooth 16 is movably installed on the end of the pressure spring 15 away from the positioning pressure ring 14. Two pressure blocks 17 are welded on the outside front and rear of the clamping disc tooth 16, and the pressure spring 15 pushes the clamping disc tooth 16 to one side.

[0032] In this embodiment, the pressure spring 15 passes through the second base frame 3, the clamping disc teeth 16 are located on one side of the second base frame 3, the clamping disc teeth 16 are meshed and connected with the transmission disc teeth 24, the screw mounting rod 11 passes through the positioning pressure ring 14 and the pressure spring 15 and is fixedly connected with the clamping disc teeth 16, and the transmission disc teeth 24 rotate through the clamping disc teeth 16 to also drive the screw mounting rod 11 and the driving screw 6 to rotate.

[0033] In this embodiment, the disconnect structure 131 includes a disconnect spring 18, a disconnect guide column 19 and a guide column positioning block 20. The disconnect spring 18 is fixedly installed on one side of the spring pressure plate 12. The disconnect guide column 19 is fixedly installed on the end of the disconnect spring 18 away from the spring pressure plate 12 and passes through the second base frame 3. The guide column positioning block 20 is movably installed on the outside of the disconnect guide column 19 and is located on one side of the top pressure block 17. The guide column positioning block 20 is inserted into the second base frame 3. The adjacent surfaces of the guide column positioning block 20 and the top pressure block 17 are inclined. The disconnect guide column 19 is located on one side of the transmission gear 23. The guide column positioning block 20 fixes the disconnect guide column 19. The disconnect guide column 19 presses the disconnect spring 18 so that the disconnect spring 18 is in a force storage state.

[0034] In this embodiment, the gear mounting column 22 is located at one side of the second base frame 3 , and the transmission gear 23 rotates left and right around the gear mounting column 22 . The gear mounting column 22 serves to movably mount the transmission gear 23 .

[0035] In this embodiment, the pressure adjustment structure 25 includes a knob ring 26, a pressure spring 27 and a clamping ring 28. The knob ring 26 is threadedly mounted on one side of the outside of the gear mounting column 22, and the clamping ring 28 is movably sleeved on the other side of the outside of the gear mounting column 22. The pressure spring 27 is sleeved on the outside of the gear mounting column 22 and pressed between the knob ring 26 and the clamping ring 28. The elasticity of the pressure spring 27 exerts pressure on the knob ring 26.

[0036] In this embodiment, a screw is installed on the outer thread of the clamping ring 28, and the end of the screw passes through the clamping ring 28 and is connected to the gear mounting column 22. The clamping ring 28 is located on the other side of the transmission gear 23. The clamping ring 28 can be fixed at any position on the gear mounting column 22 by locking the screw.

[0037] It should be noted that the present invention is a high-voltage switch mechanism protection device. When the high-voltage switch mechanism protection device is working normally, the driving motor 30 drives the driving gear 31 to rotate, and then drives the transmission gear 23 to rotate, and then the transmission disc teeth 24 rotate together with the transmission gear 23, and the meshing connection between the transmission disc teeth 24 and the pressing disc teeth 16 drives the screw rod installation rod 11 and the driving screw rod 6 to rotate. The rotation of the driving screw rod 6 causes the driving slider 7 to move left and right through the threaded connection, and then drives the crank arm plate 9 to move on the driving screw rod 6. When the crank arm plate 9 presses the elastic sheet, the driving motor 30 stops rotating, and the driving slider 7 and the crank arm plate 9 also stop moving;

[0038] When the first travel switch 2 and the second travel switch 5 in the high-voltage switch mechanism protection device fail and the crank arm shaft 8 is stuck and cannot rotate, the driving screw 6 cannot drive the driving slider 7, but the driving motor 30 will continue to increase the output torque. When the relative torque between the transmission disc teeth 24 and the clamping disc teeth 16 is greater than the pressure of the pressure spring 27, the pressure spring 27 will contract. Therefore, when the transmission disc teeth 24 mesh with the clamping disc teeth 16, the clamping disc teeth 16 slip to one side due to the contraction of the pressure spring 27, so that the transmission torque will not be transmitted to the driving screw 6, and the loading torque on the driving screw 6 will not increase further, thereby ensuring the safety of the high-voltage switch mechanism protection device.

[0039] When the clamping disc teeth 16 slip and move to one side, the pressing block 17 outside the clamping disc teeth 16 also moves to one side, and the pressing block 17 squeezes the inclined surface of the guide post positioning block 20, so that the guide post positioning block 20 shrinks into the disconnecting guide post 19, and the fixation of the disconnecting guide post 19 is released. Then the disconnecting spring 18 squeezes the disconnecting guide post 19 on the spring pressure plate 12 and moves it to one side, and finally the disconnecting guide post 19 pops out and pushes the transmission gear 23 to move the transmission gear 23 to one side around the gear mounting column 22. When the transmission gear 23 moves, it drives the transmission disc teeth 24 to separate from the clamping disc teeth 16, and at the same time, the transmission gear 23 is also separated from the driving gear 31, so that the transmission is disconnected, and the transmission to the driving screw 6 is directly interrupted;

[0040] By pressing the transmission gear 23 and loosening the screws on the clamping ring 28, the clamping ring 28 fits with the other side of the transmission gear 23, and the pressure of the pressure spring 27 presses the clamping ring 28 and the transmission gear 23 to make the transmission disc teeth 24 and the clamping disc teeth 16 maintain a stable connection, and the knob ring 26 can be rotated to make the knob ring 26 move on the gear mounting column 22 through the threaded connection. The movement of the knob ring 26 squeezes the pressure spring 27 to contract, and then the pressure of the pressure spring 27 is adjusted to adjust the fitting pressure of the transmission gear 23 and the transmission disc teeth 24 and the clamping disc teeth 16, so that the triggering force of the pressure spring 27 can be adjusted to achieve the adjustment of the protection triggering force.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-voltage switch mechanism protection device, comprising a first base frame (1), a first travel switch (2), a second base frame (3), a second travel switch (5), a driving screw rod (6), a driving slider (7), a crank arm shaft rod (8) and a crank arm plate (9), wherein the first travel switch (2) is fixedly mounted below one side of the first base frame (1), the second travel switch (5) is fixedly mounted above one side of the second base frame (3), the driving screw rod (6) is arranged between the first base frame (1) and the second base frame (3), the driving slider (7) is threadedly mounted on the outer side of the driving screw rod (6), and the crank arm plate (9) is movably mounted on the outer side of the crank arm shaft rod (8) and sleeved on the outer side of the driving slider (7), characterized in that: A screw mounting rod (11) is integrally formed at one end of the driving screw (6) close to the second base frame (3); a spring pressure plate (12) is fixedly mounted at the front and rear of one side of the second base frame (3); a pressure disc tooth structure (13) is fixedly mounted between the two spring pressure plates (12); a disconnect structure (131) is movably mounted on one side of the spring pressure plate (12); a mounting connecting rod (21) is fixedly mounted at the front and rear ends of the second base frame (3); an end of the mounting connecting rod (21) away from the second base frame (3) A gear mounting column (22) is fixedly mounted, a transmission gear (23) is movably sleeved on the outer side of the gear mounting column (22), a transmission disc tooth (24) is fixedly mounted on one side of the transmission gear (23), a pressure adjustment structure (25) is arranged on the outer side of the gear mounting column (22) and on the other side of the transmission gear (23), a motor mounting frame (29) is integrally formed at the bottom of the second base frame (3), and a driving gear (31) meshingly connected with the transmission gear (23) is movably mounted on the other side of the motor mounting frame (29); The pressure disc tooth structure (13) includes a positioning pressure ring (14), a pressure spring (15), a clamping disc tooth (16) and a top pressure block (17); the positioning pressure ring (14) is welded in the middle of the two spring pressure plates (12); the pressure spring (15) is fixedly mounted on one side of the positioning pressure ring (14); the clamping disc tooth (16) is movably mounted on the end of the pressure spring (15) away from the positioning pressure ring (14); two top pressure blocks (17) are welded to the front and rear of the outside of the clamping disc tooth (16); the clamping disc tooth (16) is meshedly connected with the transmission disc tooth (24); the screw mounting rod (11) passes through the positioning pressure ring (14) and the pressure spring (15) and is fixedly connected with the clamping disc tooth (16); The disconnect structure (131) comprises a disconnect spring (18), a disconnect guide post (19) and a guide post positioning block (20), wherein the disconnect spring (18) is fixedly mounted on one side of the spring pressure plate (12), the disconnect guide post (19) is fixedly mounted on one end of the disconnect spring (18) away from the spring pressure plate (12) and passes through the second base frame (3), the guide post positioning block (20) is movably mounted on the outside of the disconnect guide post (19) and is located on one side of the top pressure block (17), the adjacent surfaces of the guide post positioning block (20) and the top pressure block (17) are inclined, and the disconnect guide post (19) is located on one side of the transmission gear (23); The pressure adjustment structure (25) comprises a knob ring (26), a pressure spring (27) and a clamping ring (28); the knob ring (26) is threadedly mounted on one side of the outside of the gear mounting column (22); the clamping ring (28) is movably sleeved on the other side of the outside of the gear mounting column (22); the pressure spring (27) is sleeved on the outside of the gear mounting column (22) and pressed between the knob ring (26) and the clamping ring (28); and the clamping ring (28) is located on the other side of the transmission gear (23).

2. A high voltage switch mechanism protection device according to claim 1, characterized in that: A driving slot (10) is provided at the bottom of the crank arm plate (9), and a protrusion of the driving slider (7) is inserted into the driving slot (10). The crank arm plate (9) is located between the first travel switch (2) and the second travel switch (5).

3. A high voltage switch mechanism protection device according to claim 1, characterized in that: A drive motor (30) is fixedly mounted on one side of the motor mounting frame (29), and a rotating shaft of the drive motor (30) passes through the motor mounting frame (29) and is fixedly connected to a drive gear (31).

4. A high voltage switch mechanism protection device according to claim 1, characterized in that: The pressure spring (15) passes through the second base frame (3), and the pressing disc teeth (16) are located on one side of the second base frame (3).

5. A high voltage switch mechanism protection device according to claim 1, characterized in that: The guide column positioning block (20) is inserted into the second base frame (3).

6. A high voltage switch mechanism protection device according to claim 1, characterized in that: The gear installation column (22) is located on one side of the second base frame (3), and the transmission gear (23) rotates left and right around the gear installation column (22).

7. A high voltage switch mechanism protection device according to claim 1, characterized in that: The outer thread of the clamping ring (28) is provided with a screw, and the end of the screw passes through the clamping ring (28) and is connected to the gear mounting column (22).

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