Oil buffer structure suitable for circuit breaker

Abstract

The utility model discloses an oil buffer structure suitable for a circuit breaker, which comprises a circuit breaker box body, an oil buffer main body is arranged on one side in the circuit breaker box body, and the oil buffer main body is formed by combining an axle center, a bearing, an inner pipe, a piston and a spring. According to the utility model, the oil buffer main body is installed and stabilized by using the oil buffer bracket, then the oil buffer main body is in a stable state in a switching-on state, then the connecting rod main body moves to the position of the oil buffer main body in a switching-off state, and the axle center is impacted by external force to drive the piston in the oil buffer main body to extrude hydraulic oil in the inner pipe; when the connecting rod body is pressed, hydraulic oil is discharged from the oil discharge hole of the inner pipe after being pressed, meanwhile, the hydraulic oil discharged from the inner pipe flows back to the inner pipe from the oil return hole of the inner pipe to form oil buffering work, and when the connecting rod body leaves the axis position, the spring in the oil buffering body returns the piston to the original position so as to wait for next work. In the working process, the overall opening buffer capability is well improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an oil buffer structure suitable for circuit breakers. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are also divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. They are very common electrical facilities in people's lives.

[0003] Based on the use of circuit breakers, there will be impact during the cutting process, and buffering treatment is required at this time. Circuit breakers in the prior art usually use rubber pads as buffering devices, and this situation is prone to the rebound and overshoot of the opening circuit breaker cannot be effectively controlled, which can directly affect the operating performance of the opening circuit breaker. Utility Model Content

[0004] The purpose of the utility model is to provide an oil buffer structure suitable for a circuit breaker, so as to solve the problem that the circuit breaker in the prior art usually uses a rubber pad as a buffer device, which is easy to fail to effectively control the rebound and overshoot of the opening switch, thereby directly affecting the operating performance of the opening switch.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil buffer structure suitable for a circuit breaker, comprising a circuit breaker case, an oil buffer body is installed on one side of the inside of the circuit breaker case, an oil buffer bracket is connected to the outside of the oil buffer body, a connecting rod body is installed on one side of the inside of the circuit breaker case, and the oil buffer body is composed of an axis, a bearing, an inner tube, a piston, and a spring.

[0006] Preferably, an oil drain hole is provided inside the inner tube, and an oil return hole is provided inside the inner tube.

[0007] Preferably, the outer side wall of the oil buffer support is coated with an anti-corrosion layer, and the outer side wall of the anti-corrosion layer is coated with a wear-resistant layer.

[0008] Preferably, the coating surface areas of the wear-resistant layer and the anti-corrosion layer are the same, and the wear-resistant layer and the anti-corrosion layer are coated on the outer side wall of the oil buffer bracket from the outside to the inside.

[0009] Preferably, a buffer layer is fixed inside the oil buffer bracket, a first fixing seat is installed at one end of the buffer layer, and a second fixing seat is installed at the other end of the buffer layer.

[0010] Preferably, the first fixing seats are evenly distributed at one end of the buffer layer, and the second fixing seats are evenly distributed at the other end of the buffer layer.

[0011] Preferably, a reserved groove is provided inside each of the first fixing seat and the second fixing seat, a buffer pad is fixed to the inner wall of the reserved groove, and a buffer capsule block is connected between the first fixing seat and the second fixing seat.

[0012] Preferably, reinforcing rods are fixed on both sides of the first fixing seat and the second fixing seat, and the reinforcing rods are composed of two crossed rod bodies.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the oil buffer structure applicable to the circuit breaker not only improves the buffering capacity of the opening switch, but also improves the support and protection capacity of the bracket of the oil buffer structure;

[0014] (1) The oil buffer body is installed firmly by using an oil buffer bracket. Then, when the oil buffer body is in a closed state, it is in a stable state. Then, when the oil buffer body is in an open state, the connecting rod body moves to the position of the oil buffer body. At this time, the axis of the oil buffer body is squeezed. The axis is impacted by external force, which drives the piston in the oil buffer body to squeeze the hydraulic oil in the inner tube. After the hydraulic oil is pressurized, it will be discharged from the oil discharge hole of the inner tube. At the same time, the hydraulic oil discharged from the inner tube will also flow back to the inner tube through the oil return hole of the inner tube, thereby forming an oil buffering operation. When the connecting rod body leaves the axis position, the spring in the oil buffer body returns the piston to its position, so as to wait for the next operation. The above method improves the overall opening buffering capacity during the operation;

[0015] (2) The first fixing seat and the second fixing seat are evenly distributed inside the oil buffer bracket, and then the reserved groove is opened inside the first fixing seat and the second fixing seat. At this time, the buffer pad is used to complete the positioning work of the buffer capsule block, and the buffer capsule block is used to complete the overall support and buffering work, thereby improving the support effect of the oil buffer bracket and reducing the deformation problem of the oil buffer bracket, thereby better improving the overall stability during the working process;

[0016] (3) The wear-resistant layer and the anti-corrosion layer are coated on the outer wall of the oil buffer bracket from the outside to the inside. The wear-resistant layer is exposed on the outside, so it has a certain wear-resistant effect, thereby reducing the wear problem during the operation of the oil buffer bracket. After the anti-corrosion layer is in direct contact with the outer wall of the oil buffer bracket, the anti-corrosion ability is improved to a certain extent, thereby increasing the service life of the oil buffer bracket during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the circuit breaker closing structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front view structure of the circuit breaker opening of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the oil buffer bracket of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the oil buffer bracket of the utility model.

[0021] In the figure: 1. connecting rod body; 2. oil buffer body; 3. oil buffer bracket; 4. circuit breaker box; 5. buffer layer; 6. first fixing seat; 7. reserved groove; 8. second fixing seat; 9. reinforcing rod; 10. buffer pad; 11. buffer capsule block; 12. wear-resistant layer; 13. anti-corrosion layer. 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] See also Figure 1-4 The utility model provides an embodiment: an oil buffer structure suitable for a circuit breaker, comprising a circuit breaker case 4, an oil buffer body 2 is installed on one side inside the circuit breaker case 4, an oil buffer bracket 3 is connected to the outside of the oil buffer body 2, a connecting rod body 1 is installed on one side inside the circuit breaker case 4, and the oil buffer body 2 is composed of an axis, a bearing, an inner tube, a piston, and a spring.

[0024] An oil discharge hole is provided inside the inner tube, and an oil return hole is provided inside the inner tube.

[0025] The outer side wall of the oil buffer support 3 is coated with an anti-corrosion layer 13 , and the outer side wall of the anti-corrosion layer 13 is coated with a wear-resistant layer 12 .

[0026] The coating surface areas of the wear-resistant layer 12 and the anti-corrosion layer 13 are the same in size, and the wear-resistant layer 12 and the anti-corrosion layer 13 are coated on the outer side wall of the oil buffer bracket 3 from the outside to the inside.

[0027] A buffer layer 5 is fixed inside the oil buffer bracket 3 , a first fixing seat 6 is installed at one end of the buffer layer 5 , and a second fixing seat 8 is installed at the other end of the buffer layer 5 .

[0028] The first fixing seats 6 are evenly distributed at one end of the buffer layer 5 , and the second fixing seats 8 are evenly distributed at the other end of the buffer layer 5 .

[0029] A reserved groove 7 is formed inside the first fixing seat 6 and the second fixing seat 8 . A buffer pad 10 is fixed to the inner wall of the reserved groove 7 . A buffer capsule block 11 is connected between the first fixing seat 6 and the second fixing seat 8 .

[0030] A reinforcing rod 9 is fixed on both sides of the first fixing seat 6 and the second fixing seat 8. The reinforcing rod 9 is composed of two crossed rod bodies;

[0031] Furthermore, the oil buffer body 2 is composed of an axis, a bearing, an inner tube, a piston, and a spring, and an oil drain hole and an oil return hole are also provided. Hydraulic oil is distributed inside the oil buffer body 2, and the circulation of the hydraulic oil is the entire buffering work.

[0032] Working principle: First, the wear-resistant layer 12 and the anti-corrosion layer 13 are coated on the outer wall of the oil buffer bracket 3 from the outside to the inside, and the wear-resistant layer 12 is an external exposed position. Then, the buffer pad 10 is used to complete the positioning work of the buffer bag block 11, and the buffer bag block 11 is used to complete the overall support and buffering work. The oil buffer bracket 3 is used to install the oil buffer body 2 firmly. Then, when the switch is closed, the oil buffer body 2 is in a stable state. Then, when the switch is open, the connecting rod body 1 moves to the position of the oil buffer body 2. At this time, the axis of the oil buffer body 2 will be squeezed. The axis will be impacted by external force and will drive the piston in the oil buffer body 2 to squeeze the hydraulic oil in the inner tube. After the hydraulic oil is pressurized, it will be discharged from the oil discharge hole of the inner tube. At the same time, the hydraulic oil discharged from the inner tube will also flow back to the inner tube from the oil return hole of the inner tube, thereby forming an oil buffering work. When the connecting rod body 1 leaves the axis position, the spring in the oil buffer body 2 will return the piston to its position, so as to wait for the next work.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An oil buffer structure suitable for a circuit breaker, comprising a circuit breaker housing (4), characterized in that: An oil buffer body (2) is installed on one side inside the circuit breaker housing (4), an oil buffer bracket (3) is connected to the outside of the oil buffer body (2), a connecting rod body (1) is installed on one side inside the circuit breaker housing (4), and the oil buffer body (2) is composed of an axis, a bearing, an inner tube, a piston, and a spring.

2. The oil buffer structure suitable for a circuit breaker according to claim 1, characterized in that: An oil discharge hole is provided inside the inner tube, and an oil return hole is provided inside the inner tube.

3. The oil buffer structure suitable for a circuit breaker according to claim 1, characterized in that: The outer side wall of the oil buffer support (3) is coated with an anti-corrosion layer (13), and the outer side wall of the anti-corrosion layer (13) is coated with a wear-resistant layer (12).

4. The oil buffer structure suitable for a circuit breaker according to claim 3, characterized in that: The coating surface areas of the wear-resistant layer (12) and the anti-corrosion layer (13) are the same in size, and the wear-resistant layer (12) and the anti-corrosion layer (13) are coated on the outer side wall of the oil buffer bracket (3) from the outside to the inside.

5. The oil buffer structure suitable for a circuit breaker according to claim 1, characterized in that: A buffer layer (5) is fixed inside the oil buffer bracket (3), a first fixing seat (6) is installed at one end of the buffer layer (5), and a second fixing seat (8) is installed at the other end of the buffer layer (5).

6. The oil buffer structure suitable for a circuit breaker according to claim 5, characterized in that: The first fixing seats (6) are evenly distributed at one end of the buffer layer (5), and the second fixing seats (8) are evenly distributed at the other end of the buffer layer (5).

7. The oil buffer structure suitable for a circuit breaker according to claim 5, characterized in that: A reserved groove (7) is provided inside the first fixing seat (6) and the second fixing seat (8), a buffer pad (10) is fixed to the inner wall of the reserved groove (7), and a buffer capsule block (11) is connected between the first fixing seat (6) and the second fixing seat (8).

8. The oil buffer structure suitable for a circuit breaker according to claim 5, characterized in that: A reinforcing rod (9) is fixed on both sides of the first fixing seat (6) and the second fixing seat (8), and the reinforcing rod (9) is composed of two crossed rod bodies.

Images