Reclosing switching device suitable for circuit breaker
By designing a device including the circuit breaker shell wall, reclosing gate shaft, shaft rod, weldment plate and limit column, the problem of improper cutting of the circuit breaker when closed or opened is solved, and the smooth closing and avoidance of the circuit breaker is achieved. Circuit interrupted.
Patent Information
- Application Number
- CN202420949193.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The lack of restrictions when the circuit breaker is closed or opened may lead to improper cutting or excessive closing, resulting in circuit interruption or component damage.
A reclosing device including circuit breaker shell wall, reclosing gate rotating shaft, shaft rod, welded piece, limiting column and elastic component is designed. The welded piece is restricted by rotation of the welded piece and the cooperation of the compression spring. The rotation angle ensures smooth cutting and closing of the gate.
The circuit breaker is achieved smooth and precisely cut off or close the gate, avoid circuit interruptions and component damage, and ensure the stable operation of the reclosing gate.
Smart Images
Figure CN222168303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a reclosing device suitable for circuit breakers. Background Art
[0002] A circuit breaker is a switching device with closing and load-bearing capacity. It can cut off or close the connection structure, and then connect or disconnect the power transmission in time. It is often used to distribute electrical energy and protect the power supply. Unlike the previous fusible resistor, it needs to be replaced with a new electric thermal resistor for continued use after overload.
[0003] The reclosing switch is the main accessory for closing the circuit breaker and restoring power supply. The general reclosing switch has no restrictions during movement and is not equipped with corresponding auxiliary components. When the circuit breaker is closed or opened, it often fails to close or closes excessively due to some reasons or restrictions of the surrounding environment, which not only damages the circuit breaker and other components, but also causes sudden circuit interruption.
[0004] Now, a new type of reclosing device suitable for circuit breaker is proposed to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a reclosing device suitable for circuit breakers to solve the problem of improper cutting and closing mentioned in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reclosing device suitable for a circuit breaker, comprising a circuit breaker shell wall and a reclosing shaft, the reclosing shaft is installed at the lower left of the front end of the circuit breaker shell wall, and a shaft is fixed in front of the output end of the reclosing shaft, a weldment plate is fixed to the outside of the shaft, and a pressure plate is welded to the upper right of the weldment plate, a compression spring weldment is fixed to the right side of the front end of the weldment plate, and a limiting column is fixed to the right side of the center of the weldment plate.
[0007] Preferably, a fixing block is installed at the upper right of the front end of the circuit breaker shell wall, and two sets of screws are threadedly connected between the fixing block and the circuit breaker shell wall, and the pressure plate can be fitted under the touch rod of the micro switch.
[0008] Preferably, a first limit block is provided below the reclosing shaft, and a second limit block is provided on the left side of the reclosing shaft, and the first limit block and the second limit block are respectively fixedly connected to the circuit breaker housing wall.
[0009] Preferably, the weldment plate can swing left and right along with the reclosing switch shaft, and the movement of the weldment plate is limited by the first limit block and the second limit block.
[0010] Preferably, a connecting shaft is movably installed at the lower right corner of the front end of the circuit breaker shell wall, and an operating panel is fixedly connected to the outside of the front end of the connecting shaft, a circular groove is provided inside below the operating panel, a first retaining ring is sleeved on the right side of the outside of the operating panel, and a second retaining ring is movably connected to the left side of the outside of the operating panel, a compression spring is fixedly welded between the first retaining ring and the second retaining ring, a slide groove is provided inside the left side of the operating panel, the compression spring weldment is embedded in the slide groove, and an elastic cylindrical pin is fixed to the right of the center of the bottom of the operating panel.
[0011] Preferably, the inner diameters of the first retaining ring and the second retaining ring are the same, and the first retaining ring and the second retaining ring can slide back and forth along the outer wall of the operating plate.
[0012] Preferably, the elastic cylindrical pin is attached to the front and rear of the right side of the first retaining ring, and the elastic cylindrical pin can limit the movement of the first retaining ring, the compression spring and the second retaining ring.
[0013] Preferably, the diameter of the compression spring weldment matches the inner width of the slide slot, and the compression spring weldment can move back and forth along the slide slot.
[0014] Compared with the prior art, the utility model has the following beneficial effects: the reclosing device for circuit breakers can smoothly and precisely cut off or close the gate;
[0015] By fixing a weldment plate on the outside of the shaft, the reclosing switch throwing pointer can be rotated to force the reclosing switch shaft and the shaft to rotate the weldment plate, so that the upper right corner pressure plate is away from the micro switch at the bottom of the fixed block. At this time, the right side of the weldment plate is embedded in the slide groove by the compression spring weldment, and can drive the operating plate to descend together after the right side of the weldment plate is lowered, and squeeze the second retaining ring on the left side of the compression spring. Because the right side of the compression spring is attached to the left side of the elastic cylindrical pin by the first retaining ring, the rotation angle of the weldment plate can be limited together with the limit column while the compression spring is squeezed and stretched back and forth. After the right side of the weldment plate leaves the fixed block, the micro switch contact rod at the bottom is not subjected to force, the secondary circuit of the reclosing switch is disconnected, and the reclosing switch function is put into use;
[0016] Then rotate the weldment plate in the opposite direction in the same way. After the right-side compression spring assembly is reset, the pressure plate of the weldment plate is re-attached under the contact rod of the microswitch. At this time, the contact rod of the microswitch is compressed, the secondary circuit of the reclosing switch is closed, and the reclosing function is exited. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the reclosing switch of the utility model when it is retreated;
[0018] Figure 2 It is a schematic diagram of the front view structure of the reclosing switch of the utility model;
[0019] Figure 3This is a schematic diagram of the front view structure of the weldment plate of the utility model;
[0020] Figure 4 This is a front view structural diagram of the operating panel of the utility model.
[0021] In the figure: 1. Circuit breaker shell wall; 2. Fixing block; 3. Micro switch; 4. Screw; 5. Pressure plate; 6. Compression spring weldment; 7. Operating panel; 8. Connecting shaft; 9. Round groove; 10. Elastic cylindrical pin; 11. First retaining ring; 12. Slide groove; 13. First limit block; 14. Second limit block; 15. Welding plate; 16. Shaft; 17. Reclosing shaft; 18. Limiting column; 19. Compression spring; 20. Second retaining ring. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Example: See Figure 1-4 A reclosing device suitable for a circuit breaker includes a circuit breaker housing wall 1 and a reclosing shaft 17. The reclosing shaft 17 is installed at the lower left of the front end of the circuit breaker housing wall 1, and a shaft 16 is fixed in front of the output end of the reclosing shaft 17. A welding plate 15 is fixed to the outside of the shaft 16, and a pressure plate 5 is welded to the upper right of the welding plate 15. A compression spring welding piece 6 is fixed to the right side of the front end of the welding plate 15. A limiting column 18 is fixed to the right side of the center of the welding plate 15. A fixing block 2 is installed at the upper right of the front end of the circuit breaker housing wall 1, and two sets of screws 4 are threadedly connected between the fixing block 2 and the circuit breaker housing wall 1, and the pressure plate 5 can be fitted under the touch rod of the micro switch 3.
[0024] A first limit block 13 is provided below the reclosing shaft 17, and a second limit block 14 is provided on the left side of the reclosing shaft 17. The first limit block 13 and the second limit block 14 are respectively fixedly connected to the circuit breaker housing wall 1, and the weldment plate 15 can swing left and right with the reclosing shaft 17, and the movement of the weldment plate 15 is limited by the first limit block 13 and the second limit block 14;
[0025] A connecting shaft 8 is movably mounted at the lower right corner of the front end of the circuit breaker housing wall 1, and an operating panel 7 is fixedly connected to the outside of the front end of the connecting shaft 8, a circular groove 9 is provided inside the lower part of the operating panel 7, a first retaining ring 11 is sleeved on the right side of the outside of the operating panel 7, a second retaining ring 20 is movably connected to the left side of the outside of the operating panel 7, a compression spring 19 is fixedly welded between the first retaining ring 11 and the second retaining ring 20, a slide groove 12 is provided inside the left side of the operating panel 7, a compression spring weldment 6 is embedded in the slide groove 12, and an elastic cylindrical pin 10 is fixed to the right of the center of the bottom of the operating panel 7;
[0026] The first retaining ring 11 and the second retaining ring 20 have the same inner diameter, and the first retaining ring 11 and the second retaining ring 20 can slide back and forth along the outer wall of the operating plate 7. The elastic cylindrical pin 10 is attached to the front and rear of the right side of the first retaining ring 11. The elastic cylindrical pin 10 can limit the movement of the first retaining ring 11, the compression spring 19 and the second retaining ring 20. The diameter of the compression spring weldment 6 matches the inner width of the slide groove 12, and the compression spring weldment 6 can move back and forth along the slide groove 12.
[0027] Specifically, Figure 1-4 It can be known that: the reclosing switch switching pointer can be rotated to force the reclosing switch shaft 17 and the shaft rod 16 to rotate the weldment plate 15, so that the upper right corner pressure plate 5 is away from the micro switch 3 at the bottom of the fixed block 2. At this time, the right side of the weldment plate 15 is embedded in the slide groove 12 by the compression spring weldment 6, and can drive the operating plate 7 to descend together after the right side of the weldment plate 15 is lowered, and squeeze the second retaining ring 20 on the left side of the compression spring 19. Because the right side of the compression spring 19 is attached to the left side of the elastic cylindrical pin 10 by the first retaining ring 11, the rotation angle of the weldment plate 15 can be limited together with the limit column 18 while the compression spring 19 is squeezed and stretched back and forth. After the right side of the weldment plate 15 leaves the fixed block 2, the micro switch 3 at the bottom is not subjected to force, the secondary circuit of the reclosing switch is disconnected, the reclosing switch function is put into use, and the reclosing switch function is also exited. It is only necessary to rotate the weldment plate 15 and other objects in the opposite direction.
[0028] Working principle: When the utility model is in use, first rotate the reclosing switch switching pointer to force the reclosing switch shaft 17 and the shaft rod 16 to rotate the weldment plate 15, so that the upper right corner pressure plate 5 is away from the micro switch 3 at the bottom of the fixed block 2. At this time, the right side of the weldment plate 15 is embedded in the slide groove 12 by the compression spring weldment 6, and can drive the operating plate 7 to descend together after the right side of the weldment plate 15 is lowered, and squeeze the second retaining ring 20 on the left side of the compression spring 19. Because the right side of the compression spring 19 is attached to the left side of the elastic cylindrical pin 10 by the first retaining ring 11, the rotation angle of the weldment plate 15 can be limited together with the limit column 18 while the compression spring 19 is squeezed and stretched back and forth. After the right side of the weldment plate 15 leaves the fixed block 2, the micro switch 3 at the bottom is not subjected to force, the secondary circuit of the reclosing switch is disconnected, and the reclosing switch function is put into use.
[0029] Then continue to rotate the reclosing switch shaft 17, shaft rod 16 and weldment plate 15 etc. through the reclosing switch switching pointer. Under the restriction of the compression spring weldment 6 inside the slide slot 12 of the right operating panel 7, lift the pressure plate 5 at the upper right corner of the weldment plate 15 in the reverse direction. At this time, the compression spring 19 is extended and pushes the compression spring weldment 6 in the reverse direction through the second retaining ring 20, so that the pressure plate 5 is firmly attached to the contact rod of the micro switch 3, maintaining the pressing force to avoid excessive force, the reclosing switch secondary circuit is closed, and the reclosing switch function is exited.
[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A reclosing device for a circuit breaker, comprising a circuit breaker housing (1) and a reclosing shaft (17), characterized in that: A reclosing switch shaft (17) is installed at the lower left of the front end of the circuit breaker shell wall (1), and a shaft (16) is fixed in front of the output end of the reclosing switch shaft (17), a weldment plate (15) is fixed outside the shaft (16), and a pressure plate (5) is welded to the upper right of the weldment plate (15), a compression spring weldment (6) is fixed to the right side of the front end of the weldment plate (15), and a limiting column (18) is fixed to the right side of the center of the weldment plate (15).
2. A reclosing device for circuit breaker according to claim 1, characterized in that: A fixing block (2) is installed at the upper right of the front end of the circuit breaker shell wall (1), and two groups of screws (4) are threadedly connected between the fixing block (2) and the circuit breaker shell wall (1), and the pressure plate (5) can be fitted under the contact rod of the micro switch (3).
3. A reclosing device for circuit breaker according to claim 1, characterized in that: A first limit block (13) is arranged below the reclosing switch rotating shaft (17), and a second limit block (14) is arranged on the left side of the reclosing switch rotating shaft (17). The first limit block (13) and the second limit block (14) are respectively fixedly connected to the circuit breaker housing wall (1).
4. A reclosing device for circuit breaker according to claim 3, characterized in that: The weldment plate (15) can swing left and right along with the reclosing switch rotating shaft (17), and the movement of the weldment plate (15) is limited by the first limit block (13) and the second limit block (14).
5. A reclosing device for circuit breaker according to claim 1, characterized in that: A connecting shaft (8) is movably mounted at the lower right corner of the front end of the circuit breaker housing wall (1), and an operating panel (7) is fixedly connected to the outside of the front end of the connecting shaft (8); a circular groove (9) is provided inside the lower part of the operating panel (7); a first retaining ring (11) is sleeved on the right side of the outside of the operating panel (7); a second retaining ring (20) is movably connected to the left side of the outside of the operating panel (7); a compression spring (19) is fixedly welded between the first retaining ring (11) and the second retaining ring (20); a sliding groove (12) is provided inside the left side of the operating panel (7); the compression spring weldment (6) is embedded in the sliding groove (12); and an elastic cylindrical pin (10) is fixed to the right of the center of the bottom of the operating panel (7).
6. A reclosing device for circuit breaker according to claim 5, characterized in that: The first retaining ring (11) and the second retaining ring (20) have the same inner diameter, and the first retaining ring (11) and the second retaining ring (20) can slide back and forth along the outer wall of the operating plate (7).
7. A reclosing device for circuit breaker according to claim 5, characterized in that: The elastic cylindrical pin (10) is attached to the front and rear of the right side of the first retaining ring (11), and the elastic cylindrical pin (10) can limit the movement of the first retaining ring (11), the compression spring (19) and the second retaining ring (20).
8. A reclosing device for circuit breaker according to claim 5, characterized in that: The diameter of the compression spring weldment (6) matches the inner width of the slide groove (12), and the compression spring weldment (6) can move back and forth along the slide groove (12).