Reclosure with opening controlled by microswitch
By replacing Hall sensors with micro switches in the reclosing device, the structure is simplified and the cost is reduced, and the existing reclosing device is solved, and the correct closing and opening operation of the circuit breaker is achieved.
Patent Information
- Application Number
- CN202422135401.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing reclosing device is costly and complex in structure, making it difficult to effectively reduce costs and optimize the structure.
The tripping and closing process of the circuit breaker is controlled by using micro switches, and the original three Hall sensors are replaced by two micro switches, simplifying the structure and reducing costs.
A simpler control structure and cost reduction are achieved, while ensuring the correct closing and opening operation of the circuit breaker.
Smart Images
Figure CN222980434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of reclosing, and more specifically, it relates to a reclosing with a micro switch controlling the opening of the switch. Background Art
[0002] The reclosing mechanism is a protection measure in the power system, which is used to automatically reclose the circuit breaker after a short-term fault to restore power supply. When a fault occurs in the power system, the relay protection device will detect abnormalities, such as overcurrent, short circuit or ground fault, and send a tripping signal. After the circuit breaker trips, after a certain delay, the reclosing device will send a command to make the circuit breaker reclose. Usually, the reclosing is set to only attempt to reclose once or a limited number of times. Existing automatic reclosing devices all use Hall sensors to judge whether the gear rotates in place, with relatively high costs, and the structure for driving the circuit breaker to trip is complex. Summary of the Utility Model
[0003] Aiming at the deficiencies of the existing technology, the utility model provides a reclosing with a micro switch controlling the opening of the switch, which controls the tripping of the connected circuit breaker through the micro switch, reduces the cost, and optimizes the structure.
[0004] The technical solution of the utility model is as follows:
[0005] A reclosing with a micro switch controlling the opening of the switch, which includes a housing, and a middle plate, a motor, a speed reduction mechanism, a transmission gear, a lever, a first micro switch and a second micro switch are arranged inside the housing. The motor, the speed reduction mechanism and the transmission gear are all arranged on the first side of the middle plate. The motor is connected to the speed reduction mechanism, and the speed reduction mechanism is connected to the transmission gear. A square groove for connecting a square shaft is provided on the transmission gear;
[0006] The middle plate is provided with a connection hole, and a dial block is arranged on the speed reduction mechanism. The dial block passes through the connection hole to the second side of the middle plate. The lever, the first micro switch and the second micro switch are arranged on the second side of the middle plate. One end of the lever is rotatably connected to the middle plate, and the other end extends to the connection hole. The contacts of the first micro switch and the second micro switch extend to the connection hole;
[0007] When the dial block abuts against the first micro switch, the transmission gear rotates to the closing position;
[0008] When the dial block abuts against the second micro switch, the lever is driven by the dial block to the tripping position.
[0009] In summary, the above technical scheme has the following beneficial effects: Specifically, when the circuit is normally powered on, the motor drives the shift block to rotate through the reduction mechanism until it conflicts with the first micro switch. At this time, the transmission gear rotates to the closing position, and the circuit breaker connected by the square shaft is in the closed state. When the circuit is powered off, the motor drives the shift block to rotate through the reduction mechanism until it conflicts with the second micro switch. During this process, the shift block will also drive the shift lever to rotate and keep the shift lever in the tripped position. The circuit breaker connected to the reclosing switch will trip because the shift lever is in the tripped position and cannot be closed. The circuit breaker opening will also drive the transmission gear to the opening position through the square shaft. This application uses two micro switches with the original three Hall sensors to play the role of judging the rotation angle of the reduction mechanism. At the same time, after power failure, the shift block can also directly control the circuit breaker tripping through the shift lever during the rotation process, making the control structure simpler and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the closing position of a reclosing switch that controls the opening of a micro switch;
[0011] Figure 2 A schematic diagram of the opening position of a reclosing switch controlled by a micro switch;
[0012] Figure 3 It is a schematic diagram of a deceleration mechanism of a reclosing switch that controls the opening of a micro switch;
[0013] Figure 4 A schematic diagram of a lever for a reclosing switch that controls the opening of a micro switch;
[0014] Figure 5 The diagram is a schematic diagram of the third reduction gear of a reclosing switch that controls the opening of a micro switch.
[0015] : 10, housing; 20, middle plate; 21, connecting hole; 30, reduction mechanism; 31, worm; 32, first reduction gear; 33, second reduction gear; 34, third reduction gear; 341, full-tooth end; 342, missing-tooth end; 40, transmission gear; 41, square groove; 50, lever; 51, rotating ring; 52, connecting section; 53, control section; 54, toggle section; 60, first micro switch; 70, second micro switch; 80, toggle block; 81, outer arc surface; 82, left toggle surface; 83, inner arc surface; 84, right toggle surface. DETAILED DESCRIPTION
[0016] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.
[0017] As Figures 1-5 shown, a reclosing circuit breaker controlled by a microswitch includes a housing 10. A middle plate 20, a motor, a reduction mechanism 30, a transmission gear 40, a lever 50, a first microswitch 60 and a second microswitch 70 are arranged inside the housing 10. The motor, the reduction mechanism 30 and the transmission gear 40 are all arranged on the first side of the middle plate 20. The motor is connected to the reduction mechanism 30, and the reduction mechanism 30 is connected to the transmission gear 40. A square groove 41 for connecting a square shaft is formed on the transmission gear 40. A connecting hole 21 is formed on the middle plate 20. A dial block 80 is arranged on the reduction mechanism 30. The dial block 80 passes through the connecting hole 21 to the second side of the middle plate 20. The lever 50, the first microswitch 60 and the second microswitch 70 are arranged on the second side of the middle plate 20. One end of the lever 50 is rotatably connected to the middle plate 20, and the other end extends to the connecting hole 21. The contacts of the first microswitch 60 and the second microswitch 70 extend to the connecting hole 21. When the dial block 80 abuts against the first microswitch, the transmission gear 40 rotates to the closing position. When the dial block 80 abuts against the second microswitch 70, the lever 50 is driven by the dial block 80 to the tripping position. Specifically, when the circuit is normally powered on, the motor drives the dial block 80 to rotate through the reduction mechanism 30 until it abuts against the first microswitch 60. At this time, the transmission gear 40 rotates to the closing position, and the circuit breaker connected by the square shaft is in the closing state. When the circuit is powered off, the motor drives the dial block 80 to rotate through the reduction mechanism 30 until it abuts against the second microswitch 70. During this process, the dial block 80 also drives the lever 50 to rotate and keeps the lever 50 in the tripping position. The circuit breaker connected to the reclosing circuit breaker will trip because the lever 50 is in the tripping position and cannot be closed. The opening of the circuit breaker will also drive the transmission gear 40 to rotate to the opening position through the square shaft. In this application, two microswitches are used to replace the original three Hall sensors to determine the rotation angle of the reduction mechanism 30. At the same time, after power-off, the dial block 80 can directly control the tripping of the circuit breaker through the lever 50 during the rotation process, making the control structure simpler and reducing the cost.
[0018] The reduction mechanism 30 includes a worm 31, a first reduction gear 32, a second reduction gear 33 and a third reduction gear 34. The first reduction gear 32 and the second reduction gear 33 include a large tooth end and a small tooth end, and the third reduction gear 34 includes a full tooth end 341 and a missing tooth end 342; the worm 31 is connected to the output end of the motor, the large tooth end of the first reduction gear 32 is meshed with the worm 31, the large tooth end of the second reduction gear 33 is meshed with the small tooth end of the first reduction gear 32, the full tooth end 341 of the third reduction gear 34 is meshed with the large tooth end of the second reduction gear 33, and the missing tooth end 342 of the third reduction gear 34 is used to mesh with the transmission gear 40; the shift block 80 is arranged on one side of the missing tooth end 342 of the third reduction gear 34. The first reduction gear 32, the second reduction gear 33 and the third reduction gear 34 are all rotatably arranged on the middle plate 20 by means of an axle pin. The gear on the transmission gear 40 is toothless, and the tooth block is not arranged around the entire transmission gear 40. Instead, like the third reduction gear 34, the tooth block is only arranged within a certain angle range, so that it can cooperate with the third reduction gear 34, so that it can only drive the transmission gear 40 to rotate a certain angle, which is the rotation angle required for opening and closing the switch.
[0019] The lever 50 includes a rotating ring 51, a connecting section 52, a control section 53 and a toggle section 54. The rotating ring 51 is rotatably arranged on the second side of the middle plate 20. The first end of the connecting section 52 is connected to the annular side wall of the rotating ring 51. The first end of the control section 53 is connected to the second end of the connecting section 52. The control section 53 is used to abut against the tripping rod on the circuit breaker. The first end of the toggle section 54 is connected to the second end of the control section 53. The second end of the toggle section 54 extends to the connecting hole 21. After the reclosing switch is connected to the circuit breaker, the tripper of the circuit breaker passes through the tripping rod into the reclosing switch and is located below the control section 53. When the shift block 80 drives the control section 53 to rotate through the toggle section 54, the control section 53 drives the tripping rod to be pressed down, so that the circuit breaker is tripped.
[0020] The control section 53 is arc-shaped. The arc-shaped control section 53 can match the cylindrical tripping rod to better drive the tripping rod to press down. The middle plate 20 is provided with a waist-shaped hole for the tripping rod to insert, so that the tripping rod can move along the waist-shaped hole. The tripping rod is a connecting structure on the circuit breaker and is not shown in the drawings.
[0021] The shifting block 80 includes an outer arc surface 81, a left shifting surface 82, an inner arc surface 83, and a right shifting surface 84 that are connected in sequence. The joints of the outer arc surface 81, the left shifting surface 82, the inner arc surface 83, and the right shifting surface 84 are all arc-shaped. The outer arc surface 81 faces the inner wall of the connecting hole 21. The left shifting surface 82 is used to abut against the contacts of the first microswitch 60, the second microswitch 70, and the shifting rod 50. The inner arc surface 83 is located opposite the outer arc surface 81. The right shifting surface 84 is used to connect the outer arc surface 81 and the inner arc surface 83. All four edges of the shifting block 80 are chamfered to form an arc, so that the left shifting surface 82 can rotate past the first microswitch 60, the second microswitch 70, and the shifting rod 50 better.
[0022] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A reclosing device for controlling a micro switch to open a gate, characterized in that: The invention comprises a housing (10), wherein an intermediate plate (20), a motor, a speed reduction mechanism (30), a transmission gear (40), a lever (50), a first micro switch (60) and a second micro switch (70) are arranged in the housing (10); the motor, the speed reduction mechanism (30) and the transmission gear (40) are all arranged on a first side of the intermediate plate (20); the motor is connected to the speed reduction mechanism (30); the speed reduction mechanism (30) and the transmission gear (40) are connected; and the transmission gear (40) is provided with a square groove (41) for connecting a square shaft; The middle plate (20) is provided with a connecting hole (21), the speed reduction mechanism (30) is provided with a shifting block (80), the shifting block (80) passes through the connecting hole (21) to the second side of the middle plate (20), the shifting rod (50), the first micro switch (60) and the second micro switch (70) are arranged on the second side of the middle plate (20), one end of the shifting rod (50) is rotatably connected to the middle plate (20), and the other end extends to the connecting hole (21), and the contacts of the first micro switch (60) and the second micro switch (70) extend to the connecting hole (21); When the shift block (80) contacts the first micro-switch, the transmission gear (40) rotates to a closing position; When the shift block (80) contacts the second micro switch (70), the shift rod (50) is driven by the shift block (80) to a tripping position.
2. A micro switch controlled reclosing device for opening a switch according to claim 1, characterized in that: The speed reduction mechanism (30) comprises a worm (31), a first speed reduction gear (32), a second speed reduction gear (33) and a third speed reduction gear (34); the first speed reduction gear (32) and the second speed reduction gear (33) comprise a large tooth end and a small tooth end; the third speed reduction gear (34) comprises a full tooth end (341) and a missing tooth end (342); The worm (31) is connected to the output end of the motor, the large tooth end of the first reduction gear (32) is meshed with the worm (31), the large tooth end of the second reduction gear (33) is meshed with the small tooth end of the first reduction gear (32), the full tooth end (341) of the third reduction gear (34) is meshed with the large tooth end of the second reduction gear (33), and the toothless end (342) of the third reduction gear (34) is used to mesh with the transmission gear (40); The shift block (80) is arranged on one side of the tooth-missing end (342) of the third reduction gear (34).
3. A micro switch controlled reclosing device for opening a switch according to claim 1, characterized in that: The lever (50) comprises a rotating ring (51), a connecting section (52), a control section (53) and a toggle section (54); the rotating ring (51) is rotatably arranged on the second side of the middle plate (20); the first end of the connecting section (52) is connected to the annular side wall of the rotating ring (51); the first end of the control section (53) is connected to the second end of the connecting section (52); the control section (53) is used to abut against a tripping rod on a circuit breaker; the first end of the toggle section (54) is connected to the second end of the control section (53); and the second end of the toggle section (54) extends to the connecting hole (21).
4. A micro switch controlled reclosing device for opening a switch according to claim 3, characterized in that: The control section (53) is arc-shaped.
5. A micro switch controlled reclosing device for opening a switch according to claim 3, characterized in that: The shift block (80) comprises an outer arc surface (81), a left shifting surface (82), an inner arc surface (83) and a right shifting surface (84) which are connected in sequence, and the connection points of the outer arc surface (81), the left shifting surface (82), the inner arc surface (83) and the right shifting surface (84) are all arc-shaped.