CN216562807U - Breaker opening and closing buffer device - Google Patents
Breaker opening and closing buffer device Download PDFInfo
- Publication number
- CN216562807U CN216562807U CN202123424037.1U CN202123424037U CN216562807U CN 216562807 U CN216562807 U CN 216562807U CN 202123424037 U CN202123424037 U CN 202123424037U CN 216562807 U CN216562807 U CN 216562807U
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- buffer
- circuit breaker
- hydraulic buffer
- hydraulic
- breaker
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Abstract
The utility model discloses a breaker opening and closing buffer device which comprises a breaker shell, a main shaft, a hydraulic buffer and an impact sheet, wherein the main shaft is arranged on the breaker shell, the impact sheet is arranged on the main shaft, and the hydraulic buffer is arranged at the position, right opposite to the impact sheet, on the breaker shell. According to the utility model, the mode that the impact sheet is arranged on the main shaft of the breaker and the hydraulic buffer is arranged on the shell of the breaker is adopted, so that the impact sheet impacts the hydraulic buffer when the breaker is switched on and off to complete buffering. The hydraulic buffer of this device passes through the screw thread and is reliably connected with the circuit breaker casing, and the life of rational utilization hydraulic buffer, and conveniently change, compare in the circuit breaker divide-shut brake buffer of spring, this device life-span is longer, and the impact energy that can bear is bigger.
Description
Technical Field
The utility model relates to the field of low-voltage circuit breakers, in particular to a circuit breaker opening and closing buffer device.
Background
The low-voltage universal circuit breaker is an important element in a low-voltage electrical apparatus, and along with the development of the industry, the performance parameter requirement of the low-voltage circuit breaker is higher and higher, and especially the opening distance of a main circuit of the circuit breaker is greatly required by the opening of high voltage and large current. Because momentum is very big in the breaker opening and closing process, inertia after the striking is also very big. If the brake-separating rebound distance is too large, the breakdown of a main circuit can be caused, and the main circuit can be re-ignited again, so that the burning loss of the circuit breaker is serious or the circuit breaker fails; if the breaker has closing bounce, the contact is burnt and abraded greatly. Therefore, a breaker opening and closing buffer device is needed, and the problem of resilience of the contact is solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model is realized by the following technical scheme:
the utility model provides a breaker divide-shut brake buffer, includes circuit breaker casing, main shaft, hydraulic buffer, striking piece, the main shaft sets up on the circuit breaker casing, striking piece sets up on the main shaft, be provided with arc recess and two hydraulic buffer mounting holes on the circuit breaker casing, hydraulic buffer sets up on hydraulic buffer mounting hole and just to striking piece.
Furthermore, the striking plate is annular and is provided with two bosses, and the bosses are used for striking a hydraulic shaft of the hydraulic buffer to realize the buffering of the main shaft.
Further, a groove is formed in the boss and used for aligning with a hydraulic shaft of the hydraulic buffer.
Further, threads are arranged in the oil buffer mounting hole, and the threads are formed by injection molding of a matched nut and the breaker shell together and used for fixing the oil buffer.
Furthermore, the striking plate is welded on the main shaft and is positioned in the arc-shaped groove, and the striking plate is rigidly connected with the main shaft and rotates along with the main shaft.
Furthermore, the hydraulic buffer is provided with threads and matched with the threads in the mounting hole of the hydraulic buffer, is a known technology, mainly comprises a body, an axle center, a bearing, an inner tube, a piston, a hydraulic shaft, a spring and the like, and can balance and effectively stop a moving object.
Further, a nut is arranged on the hydraulic buffer, the nut is matched with a thread on the hydraulic buffer, and the nut is used for further fixing the hydraulic buffer.
Further, the hydraulic shock absorber has two and is respectively arranged in the hydraulic shock absorber mounting hole through threaded connection.
Furthermore, the hydraulic buffer is a throttling hydraulic buffer, most of kinetic energy is converted into heat energy to be dissipated by utilizing the throttling action of oil, and compared with the buffering action of a spring, the hydraulic buffer has longer service life and larger impact energy bearing capacity.
Through the technical scheme, the utility model has the following technical effects:
the utility model provides a breaker divide-shut brake buffer, sets up the striking piece through the circuit breaker main shaft, sets up the mode of hydraulic buffer on the circuit breaker casing, makes the circuit breaker when the divide-shut brake, and the striking piece strikes hydraulic buffer, accomplishes the buffering. The hydraulic buffer of this device passes through the screw thread and is reliably connected with the circuit breaker casing, and the life of rational utilization hydraulic buffer, and conveniently change, compare in the circuit breaker divide-shut brake buffer of spring, this device life-span is longer, and the impact energy that can bear is bigger.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention at A;
FIG. 3 is a schematic view of the impact plate of the present invention;
FIG. 4 is a schematic view of a hydraulic shock absorber according to the present invention;
fig. 5 is a schematic structural diagram of a circuit breaker housing according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
the utility model provides a breaker divide-shut brake buffer, includes circuit breaker casing 1, main shaft 2, hydraulic buffer 3, striking piece 4, main shaft 2 sets up on circuit breaker casing 1, striking piece 4 sets up on main shaft 2, hydraulic buffer 3 sets up the position to striking piece 4 on circuit breaker casing 1.
The striking plate 4 is annular and is provided with two bosses 41, and the bosses 41 are used for striking a hydraulic shaft of the hydraulic buffer 3 to realize the buffering of the main shaft 2. Be provided with arc recess 11 and two hydraulic buffer mounting holes 12 on the circuit breaker casing 1, hydraulic buffer mounting hole 12 is used for installing hydraulic buffer 3, arc recess 11 avoids striking piece 4 and circuit breaker casing 1 to interfere. And threads are arranged in the hydraulic buffer mounting hole 12, and are formed by injection molding of a matched nut and the breaker shell 1 together for fixing the hydraulic buffer 3. The striking plate 4 is welded on the main shaft 2 and is positioned in the arc-shaped groove 11, and the striking plate 4 is rigidly connected with the main shaft 2 and rotates along with the main shaft 2. The hydraulic buffer 3 is provided with threads and is matched with the threads in the hydraulic buffer mounting hole 12, the hydraulic buffer 3 is a known technology, mainly comprises a body, an axle center, a bearing, an inner tube, a piston, a hydraulic shaft, a spring and the like, and can balance and effectively stop a moving object. The hydraulic buffer 3 is provided with a nut 13, the nut 13 is matched with the thread on the hydraulic buffer 3, and the nut 13 is used for further fixing the hydraulic buffer 3. The hydraulic shock absorbers 3 have two and are respectively disposed in the hydraulic shock absorber mounting holes 12 by screw-coupling.
Example two:
in this embodiment, on the basis of the first embodiment, the groove 42 is formed in the boss 41 of the striking plate 4, the groove 42 is matched with the hydraulic shaft of the hydraulic buffer 3, the radius of the groove 42 is slightly larger than that of the hydraulic shaft, and when the breaker is opened and closed, the groove 42 is matched with the hydraulic shaft, so that the boss 41 is just aligned to the hydraulic shaft to be broken down, and the structural stability and the service life of the hydraulic buffer 3 are effectively improved.
The working principle of the above embodiments is as follows:
when the breaker is opened and closed, the main shaft 2 rotates to drive the impact sheet 4 to rotate until the boss 41 impacts the hydraulic shaft of the hydraulic buffer 3, the hydraulic buffer 3 is acted by external force to drive the piston to extrude the hydraulic oil of the inner pipe, the hydraulic oil is discharged one by one through the oil discharge hole of the inner pipe after being pressed, meanwhile, the hydraulic oil discharged from the inner pipe also flows back to the inner pipe through the oil return hole of the inner pipe, and when the external force disappears, the spring rebounds the piston to the initial point to wait for the next action, so that the buffering of one opening and closing is completed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a breaker divide-shut brake buffer which characterized in that: including circuit breaker casing (1), main shaft (2), oil buffer (3), striking piece (4), main shaft (2) set up on circuit breaker casing (1), striking piece (4) set up on main shaft (2), be provided with arc recess (11) and two oil buffer mounting holes (12) on circuit breaker casing (1), oil buffer (3) set up on oil buffer mounting hole (12) and just to striking piece (4).
2. The circuit breaker opening and closing buffering device according to claim 1, wherein: the striking plate (4) is annular and is provided with two bosses (41).
3. The breaker opening and closing buffer device according to claim 2, wherein: the lug boss (41) is provided with a groove (42).
4. The circuit breaker opening and closing buffering device according to claim 1, wherein: and threads are arranged in the hydraulic buffer mounting hole (12).
5. The circuit breaker opening and closing buffering device according to claim 1, wherein: the striking plate (4) is welded on the main shaft (2) and is positioned in the arc-shaped groove (11).
6. The circuit breaker opening and closing buffering device according to claim 1, wherein: the hydraulic buffer (3) is provided with threads and is matched with the threads in the hydraulic buffer mounting hole (12).
7. The circuit breaker opening and closing buffering device according to claim 1, wherein: the hydraulic buffer (3) is provided with a nut (13), and the nut (13) is matched with the thread on the hydraulic buffer (3).
8. The circuit breaker opening and closing buffering device according to claim 1, wherein: the two hydraulic buffers (3) are respectively arranged in the hydraulic buffer mounting holes (12) through threaded connection.
9. The circuit breaker opening and closing buffering device according to claim 1, wherein: the hydraulic buffer (3) is a throttling hydraulic buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123424037.1U CN216562807U (en) | 2021-12-31 | 2021-12-31 | Breaker opening and closing buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123424037.1U CN216562807U (en) | 2021-12-31 | 2021-12-31 | Breaker opening and closing buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216562807U true CN216562807U (en) | 2022-05-17 |
Family
ID=81559909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123424037.1U Active CN216562807U (en) | 2021-12-31 | 2021-12-31 | Breaker opening and closing buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216562807U (en) |
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2021
- 2021-12-31 CN CN202123424037.1U patent/CN216562807U/en active Active
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