Circuit breaker convenient to disassemble, assemble and maintain

Abstract

The utility model discloses a breaker convenient to disassemble, assemble and maintain, comprising a breaker and a connecting shaft, the rear of the breaker is provided with a clamping groove, the upper and lower inner walls of the clamping groove are provided with hinge grooves, the inner walls of the two sides of the hinge grooves are provided with mounting holes, the connecting shaft is rotatably mounted in the mounting holes, the connecting shaft is fixedly connected with a limiting pressing plate, and the limiting pressing plate is fixedly connected with the connecting shaft. A mounting hole is formed in the circuit breaker, a connecting shaft is arranged in the mounting hole, torsional springs are connected to the positions, close to the edges of the two ends, of the connecting shaft in a sleeving mode, a limiting groove is formed in the circuit breaker, a limiting plug pin is slidably installed in the limiting groove, two limiting holes are formed in the connecting shaft and matched with the limiting plug pin, and one end of each torsional spring is fixedly connected with the inner wall of the mounting hole. The limiting bolt is inserted into the limiting hole, so that the rotation of the connecting shaft can be limited, the position of the limiting pressing plate is fixed, and the problem that the circuit breaker cannot be stably fixed on the circuit breaker guide rail due to the rotation of the limiting pressing plate caused by vibration is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit breaker, especially to a circuit breaker convenient to dismount and maintain. BACKGROUND

[0002] The circuit breaker refers to a switching device capable of closing, carrying and opening the current under normal circuit conditions and capable of closing, carrying and opening the current under abnormal circuit conditions within a specified time.

[0003] The utility model discloses a quick dismounting circuit breaker, one side of the circuit breaker body is fixed with the casing, the inside one side of the casing is fixed with two guide rods at both end positions, the outer side of two guide rods is slidably connected with the slide rod extending to the outside of the casing, the one end of two slide rods is slidably inserted with the L-shaped connecting rod, the one end of two L-shaped connecting rods is fixed with the clamping block, the one side of two slide rods is connected with the clamping spring of the sleeve in the outer side of the guide rod, the inside of the casing is rotatably connected with the gear at the middle position, the utility model discloses novel design, through the rack driving gear rotation, thereby driving two slide rods reverse movement, and the slide rod drives two clamping blocks reverse movement, can realize quick dismounting, reduces the dismounting difficulty, improves the dismounting efficiency, and the fixed reliability is high, and it is not easy to fall off.

[0004] The above-mentioned existing quick dismounting circuit breaker has some problems when in use. First, the clamping spring is used to push the clamping fixed on the circuit breaker guide rail, although it can realize quick clamping, but the spring force is limited, and the circuit breaker is easy to fall off under the impact of external force, and the stability is poor. Secondly, the circuit breaker is installed in the inside of the gate box together with the air switch, which leads to limited space in the inside of the gate box, and there is no extra space below the circuit breaker for pulling the pressing plate. UTILITY MODEL CONTENTS

[0005] The utility model discloses a circuit breaker convenient to dismount and maintain, and aims at solving the problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a circuit breaker convenient to dismount and maintain, comprising a circuit breaker, a connecting shaft, a clamping groove is formed in the back of the circuit breaker, a hinge groove is formed in the upper and lower inner walls of the clamping groove, mounting holes are formed in the inner walls on both sides of the hinge groove, a connecting shaft is rotatably installed in the mounting holes, a limit pressing plate is fixedly connected to the connecting shaft, torsional springs are sleeved on the connecting shaft near the edge positions of both ends, a limit recess is formed in the circuit breaker, a limit bolt is slidably installed in the limit recess, two limit holes are formed in the connecting shaft, and the limit holes and the limit bolt are matched with each other.

[0007] Preferably, one end of the torsion spring is fixed to the inner wall of the mounting hole, and the other end of the torsion spring is fixed to the limiting pressing plate.

[0008] Preferably, an antiskid rubber pad is fixed to the lower surface of the limiting pressing plate.

[0009] Preferably, a storage groove is formed in the inner wall of the limiting recess, and an interference block is fixed to the outer wall of the limiting pin and is in sliding fit with the storage groove.

[0010] Preferably, a spring pad is fixed to the limiting pin, a return spring is sleeved on the limiting pin, and a handle is fixed to the upper end of the limiting pin.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. By inserting the limiting pin into the limiting hole, the rotation of the connecting shaft can be limited, the position of the limiting pressing plate is fixed, the problem that the circuit breaker cannot be stably fixed on the circuit breaker guide rail due to vibration is avoided.

[0013] 2. By pulling the handle to move the limiting pin out of the torsion spring, the interference block will move out of the storage groove together with the limiting pin at this time, and the rotation of the limiting pin can drive the rotation of the interference block, so that the interference block is dislocated with the storage groove, the interference block is clamped on the front surface of the circuit breaker, the limiting pin cannot be reset, and then the hands of the operator are freed, the operator can pull the circuit breaker to disassemble it, and the limiting pin is arranged on the front surface of the circuit breaker, so that interference with other devices in the tank can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a local half sectional view of the utility model;

[0016] Figure 3 It is a sectional view of the utility model;

[0017] Figure 4 It is a schematic diagram of the connecting shaft structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the limiting pin structure of the utility model.

[0019] In the drawing: 1, circuit breaker; 101, clamping groove; 102, hinged groove; 103, mounting hole; 2, connecting shaft; 201, limiting pressing plate; 203, torsion spring; 204, limiting hole; 205, antiskid rubber pad; 3, limiting recess; 301, storage groove; 4, limiting pin; 401, spring pad; 402, return spring; 403, interference block; 404, handle; 5, circuit breaker guide rail. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a circuit breaker convenient to disassemble and maintain, including circuit breaker 1, connecting shaft 2, the rear of circuit breaker 1 is equipped with clamping groove 101, clamping groove 101 upper and lower inner wall is equipped with hinged groove 102, hinged groove 102 two sides inner wall is equipped with mounting hole 103, mounting hole 103 is rotatably installed with connecting shaft 2, connecting shaft 2 is fixedly connected with limit pressing plate 201, torsional spring 203 is sleeved with the position of the edge of both ends on connecting shaft 2, limit recess 3 is equipped in circuit breaker 1, limit pin 4 is slidably installed in limit recess 3, two limit holes 204 are equipped in connecting shaft 2, limit pin 4 and limit hole 204 are mutually matched.

[0022] In the embodiment, circuit breaker 1 can be clamped on circuit breaker guide rail 5 by clamping groove 101, torsional spring 203 can provide a certain torsion for limit pressing plate 201, limit pin 4 and limit hole 204 are matched with each other, limit pin 4 is inserted into the inside of limit hole 204, the rotation of connecting shaft 2 can be limited, limit pressing plate 201 can be turned by ninety degrees towards clamping groove 101 under the drive of torsional spring 203 after limit pin 4 is pulled out from the inside of limit hole 204, and then limit pressing plate 201 is clamped on the back of upper and lower convex edges of circuit breaker guide rail 5, and then circuit breaker 1 is clamped on circuit breaker guide rail 5, as shown in Figure 2 Since two limit holes 204 are provided and are distributed by ninety degrees, limit pin 4 can be inserted into the inside of another limit hole 204 after limit pressing plate 201 is clamped on the back of convex edge of circuit breaker guide rail 5 when connecting shaft 2 is rotated by ninety degrees, and then the rotation of connecting shaft 2 is limited again, so that the position of limit pressing plate 201 is fixed, and the problem that circuit breaker 1 cannot be stably fixed on circuit breaker guide rail 5 due to the rotation of limit pressing plate 201 caused by vibration is avoided.

[0023] In order to provide torsion for limit pressing plate 201, the device adopts the following technical scheme: one end of torsional spring 203 is fixedly connected with the inner wall of mounting hole 103, the other end of torsional spring 203 is fixedly connected with limit pressing plate 201, and antiskid rubber pad 205 is fixedly connected to the lower surface of limit pressing plate 201.

[0024] The torsion spring 203 is connected to the inner wall of the mounting hole 103 and the limiting pressure plate 201 respectively, so that the torsion spring 203 can provide a certain torque for the limiting pressure plate 201, so that the torsion spring 203 can automatically flip and clamp on the back side of the convex edge of the circuit breaker guide rail 5. The anti-slip rubber pad 205 contacts the circuit breaker guide rail 5, which can increase the friction between the limiting pressure plate 201 and the circuit breaker guide rail 5, thereby preventing the circuit breaker 1 from sliding left and right on the circuit breaker guide rail 5.

[0025] Among them, in order to achieve the purpose of limiting the rotation of the connecting shaft 2, this device adopts the following technical solutions: a storage groove 301 is opened on the inner wall of the limiting groove 3, an interference block 403 is fixedly connected to the outer wall of the limiting latch 4, the interference block 403 slides with the storage groove 301, a spring pad 401 is fixedly connected to the limiting latch 4, a return spring 402 is sleeved on the limiting latch 4, and a handle 404 is fixedly connected to the upper end of the limiting latch 4.

[0026] The return spring 402 can provide a certain thrust for the spring pad 401. The spring pad 401 will be driven by the thrust to drive the limit latch 4 to be inserted into the torsion spring 203, and the storage slot 301 will slide with the interference block 403. When the limit latch 4 is inserted into the torsion spring 203, the interference block 403 will be stored in the storage slot 301. When the limit latch 4 is pulled out of the torsion spring 203 by the handle 404, the interference block 403 will be moved out of the storage slot 301 together with the limit latch 4. Rotating the limit latch 4 can drive the interference block 403 to rotate, so that the interference block 403 is misaligned with the storage slot 301, and the interference block 403 will be stuck on the front of the circuit breaker 1, making it impossible for the limit latch 4 to be reset, thereby freeing the operator's hands and facilitating subsequent operations.

[0027] The working principle and use process of the present invention: When using, the limit pressing plate 201 needs to be adjusted so that the limit pressing plate 201 is in a vertical state. Figure 1 As shown, the circuit breaker 1 can be moved so that the engaging groove 101 is buckled on the circuit breaker guide rail 5, and the handle 404 is pulled to drive the limit pin 4 to move out of the torsion spring 203, thereby releasing the restriction on the connecting shaft 2. At this time, the limit pressure plate 201 will rotate 90 degrees under the drive of the torsion spring 203, and the limit pressure plate 201 will be clamped on the back of the upper and lower convex edges of the circuit breaker guide rail 5, thereby clamping the circuit breaker 1 on the circuit breaker guide rail 5. After releasing the handle 404, the limit pin 4 It will be reinserted into another limiting hole 204 under the push of the return spring 402, and the connecting shaft 2 will be restricted again, so that the two limiting pressure plates 201 remain in a horizontal state, and the circuit breaker 1 is fixed on the circuit breaker guide rail 5. When the circuit breaker 1 needs to be removed, it is only necessary to pull the limiting pin 4 out of the limiting hole 204 to pull the circuit breaker 1. The limiting pressure plate 201 will be rotated to a vertical state under the force, and the circuit breaker 1 can be directly removed.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker that is easy to disassemble and maintain, comprising a circuit breaker (1) and a circuit breaker guide rail (5), characterized in that: A clamping groove (101) is provided at the rear of the circuit breaker (1), hinge grooves (102) are provided on the upper and lower inner walls of the clamping groove (101), mounting holes (103) are provided on the inner walls on both sides of the hinge groove (102), a connecting shaft (2) is rotatably installed in the mounting hole (103), a limiting pressure plate (201) is fixedly connected to the connecting shaft (2), a torsion spring (203) is sleeved on the connecting shaft (2) near the edges of both ends, a limiting groove (3) is provided in the circuit breaker (1), a limiting latch (4) is slidably installed in the limiting groove (3), two limiting holes (204) are provided in the connecting shaft (2), and the limiting holes (204) and the limiting latch (4) cooperate with each other.

2. A circuit breaker that is easy to disassemble and maintain according to claim 1, characterized in that: One end of the torsion spring (203) is fixedly connected to the inner wall of the mounting hole (103), and the other end of the torsion spring (203) is fixedly connected to the limiting pressure plate (201).

3. The circuit breaker that is easy to disassemble and maintain according to claim 1, characterized in that: An anti-skid rubber pad (205) is fixedly connected to the bottom of the limiting pressure plate (201).

4. The circuit breaker that is easy to disassemble and maintain according to claim 1, characterized in that: The inner wall of the limiting groove (3) is provided with a storage groove (301), and the outer wall of the limiting latch (4) is fixedly connected with an interference block (403), and the interference block (403) is slidably matched with the storage groove (301).

5. The circuit breaker that is easy to disassemble and maintain according to claim 1, characterized in that: A spring pad (401) is fixedly connected to the limit pin (4), a return spring (402) is sleeved on the limit pin (4), and a handle (404) is fixedly connected to the upper end of the limit pin (4).

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