Small automatic reclosing circuit breaker with voltage and load regulation

Abstract

The utility model discloses a small-sized automatic reclosing circuit breaker with voltage and load regulation, which comprises a circuit breaker body and an operating handle rotationally arranged in the middle of the front surface of the circuit breaker body, the middle part of the back surface of the circuit breaker body is fixedly provided with a load voltage regulator, and the middle parts of the left and right sides of the circuit breaker body are fixedly provided with closing box bodies; wherein wiring cavities are formed in the upper end and the lower end of the circuit breaker body at equal intervals, and isolation valve plates are slidably arranged in the wiring cavities in the upper side and the lower side in an elastic connection mode; wherein driving gears are rotatably arranged at the central positions in the symmetrically arranged closing box bodies through bearings, and driving racks are slidably arranged in front of the interiors of the symmetrically arranged closing box bodies. According to the small-sized automatic reclosing circuit breaker with voltage and load regulation, the bearing current of the circuit breaker body is regulated through the load voltage regulator, and the circuit breaker body can be driven to be reclosing after maintenance, so that the normal work of the circuit breaker body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, concretely to a kind of small automatic reclosing circuit breaker with voltage regulation and load regulation. BACKGROUND

[0002] Circuit breaker refers to the switch, and load and open under normal loop condition current, carry specified overcurrent in specified time, and can be closed and open under abnormal loop condition current mechanical switch, in the conventional short-circuit, overload etc. It will occur automatic trip operation, but after troubleshooting, it needs to be closed by manual operation mode;

[0003] The utility model discloses a kind of reclosing molded case leakage circuit breakers of CN218867012U, the utility model discloses a sliding groove is set on the side of circuit breaker body, and limit mechanism is arranged on the side of reclosing body, reclosing body and circuit breaker body clamping, so that when overhauling, disassembly and assembly are more convenient in the future;When circuit breaker body and reclosing body are connected by wire, each wire can be clamped into wire placing rack, avoid all wires are wound together when too many wires, cause confusion, by being provided with wire placing rack on both ends of circuit breaker body and reclosing body;

[0004] But the above-mentioned for reclosing molded case leakage circuit breaker in actual use's process still has following problem: although being combed to guide by limit mechanism, but automatic trip operation occurs in the overall operation process under short-circuit, overload etc. It, but after troubleshooting, it needs to be closed by manual operation mode, and simultaneously this kind of circuit breaker cannot be adjusted to load voltage, so it is more limited in different use scenarios.

[0005] Therefore, we propose a kind of small automatic reclosing circuit breaker with voltage regulation and load regulation, to solve the problems raised in the above. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of small automatic reclosing circuit breaker with voltage regulation and load regulation, to solve the problems that although existing circuit breaker is combed to guide by limit mechanism, but automatic trip operation occurs in the overall operation process under short-circuit, overload etc. It, but after troubleshooting, it needs to be closed by manual operation mode, and simultaneously this kind of circuit breaker cannot be adjusted to load voltage, so it is more limited in different use scenarios.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of small automatic reclosing circuit breaker with voltage regulation and load regulation, including circuit breaker body, and the operation handle of rotation setting in the middle of the front of circuit breaker body;Further including:

[0008] The middle of the back of the circuit breaker body is fixedly provided with a load pressure regulator, and the middle of the left and right sides of the circuit breaker body is fixedly provided with a closing box body;

[0009] The upper and lower ends of the circuit breaker body are both provided with a wiring cavity at equal intervals, and the inside of the upper and lower wiring cavities is both provided with an isolation valve plate in a sliding manner through elasticity.

[0010] The inside of the symmetrically arranged closing box body is both provided with a drive gear in a rotating manner through a bearing, and the inside of the symmetrically arranged closing box body is both provided with a drive rack in a sliding manner.

[0011] Preferably, the front of the circuit breaker body is provided with a closing bracket in a sliding manner, the closing bracket is installed on the front end of the operating handle of the front of the circuit breaker body in a sleeved manner, and the left and right ends of the closing bracket are both provided in the inside of the symmetrically arranged closing box body in a sliding manner.

[0012] Preferably, the load pressure regulator of the back of the circuit breaker body is connected with the closing box bodies on the left and right sides of the circuit breaker body, and the voltage in the adaptive range is adjusted through the load pressure regulator, so that the circuit breaker body is driven by the closing box body to be tripped in the case of overload, short circuit and the like, so as to quickly respond to the protection effect.

[0013] Preferably, the isolation valve plate arranged in the inside of the symmetrically arranged wiring cavity drives the power cable to be tripped and isolated, the outer ends of the upper and lower isolation valve plates are respectively provided in the inside of the closing box bodies on the left and right sides in a sliding manner, and the isolation valve plate is driven by the closing box body to move in the front and back directions, so as to be connected and disconnected.

[0014] Preferably, the drive gears in the inside of the symmetrically arranged closing box bodies are meshed and connected with the drive racks in front, the upper ends of the drive racks on the left and right sides are both fixedly connected to the outer ends of the closing bracket on the front of the circuit breaker body, and the operating handle connected in a sleeved manner is driven by the drive rack to be pulled up and down.

[0015] Preferably, the inside of the symmetrically arranged closing box bodies is provided with a drive shaft in a rotating manner through a bearing, the upper ends of the symmetrically arranged drive shafts are both fixedly connected to the bottom end of the output shaft of the servo motor, the servo motor is fixedly connected to the inside of the closing box body, and the middle parts of the symmetrically arranged drive shafts are both meshed and connected to the rotating shafts of the drive gears through a bevel gear set.

[0016] Preferably, the outer walls of the upper and lower sides of the symmetrically arranged drive shafts are both fixedly provided with a winding roller, the outer walls of the symmetrically arranged winding rollers are both wound and connected to the front ends of the traction steel wires, the rear ends of the symmetrically arranged traction steel wires are both fixedly connected to the outer ends of the isolation valve plates, and the isolation valve plates are driven to move in the front and back directions through the rotation of the drive shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This small automatic reclosing circuit breaker with voltage and load regulation adjusts the carrying current of the circuit breaker body through the load voltage regulator, and can drive the circuit breaker body to reclose after maintenance, ensuring the normal operation of the circuit breaker body. The specific details are as follows:

[0018] 1. Adjust the load voltage of the circuit breaker body through the load voltage regulator so that the circuit breaker body can adapt to the voltage and current of the circuit according to the usage requirements of different scenarios; insert the cable end into the wiring cavity opened at the upper and lower ends of the circuit breaker body so that in the event of a short circuit or overload, the load voltage regulator and the closing box control the isolation valve plate to drive the cable to disconnect.

[0019] 2. Under short circuit and overload conditions, the operating handle drives the closing bracket and the drive rack to rise, which causes the rotating drive gear bevel gear group to drive the drive shaft to drive the winding roller and the traction steel cable to wind up. The traction steel cable drives the isolation valve plate fixedly connected to the rear end to move forward, and then the isolation valve plate drives the line to disconnect from the circuit breaker body for maintenance and troubleshooting.

[0020] 3. The voltage after maintenance is detected by the load voltage regulator, and then the drive shaft is rotated by the servo motor. This loosens the traction cable and stops the traction limit on the isolation valve plate. Then, the isolation valve plate drives the connected line to connect with the circuit breaker body. At the same time, the bevel gear group drives the drive gear to drive the meshing drive rack, which drives the closing bracket fixed at the upper end to move downward. This causes the sleeved operating handle to rotate, ensuring the normal operation of the circuit breaker body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of the load pressure regulator of this utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the closing bracket of this utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the closing box of this utility model;

[0025] Figure 5 This is a schematic diagram of the drive rack mounting structure of this utility model;

[0026] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0027] In the figure: 1, circuit breaker body; 2, operating handle; 3, load pressure regulator; 4, closing box body; 5, wiring cavity; 6, isolation valve plate; 7, drive gear; 8, drive rack; 9, closing support; 10, drive shaft; 11, servo motor; 12, bevel gear set; 13, winding roller; 14, traction cable. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1-6 The utility model provides the following technical scheme:

[0030] Embodiment 1: in order to solve the problem that the existing circuit breaker body 1 exists in the use process, therefore the technical scheme is as follows in this embodiment, a small automatic reclosing circuit breaker with voltage regulation and load regulation, including circuit breaker body 1, and the operating handle 2 rotationally arranged in the middle of the front of the circuit breaker body 1;The middle of the back of the circuit breaker body 1 is fixedly provided with a load pressure regulator 3, and the middle of the left and right sides of the circuit breaker body 1 is fixedly provided with a closing box body 4;Wherein, the upper and lower ends of the circuit breaker body 1 are equally spaced apart to open the wiring cavity 5, and the inside of the upper and lower wiring cavities 5 is slidably provided with an isolation valve plate 6 through the elastic connection;The load pressure regulator 3 on the back of the circuit breaker body 1 is connected with the closing box body 4 on the left and right sides of the circuit breaker body 1, and the voltage in the adaptive range is adjusted through the load pressure regulator 3, so that the circuit breaker body 1 is driven by the closing box body 4 to break in the case of overload, short circuit and the like, so as to quickly respond to the protection effect;The inside of the symmetrical wiring cavity 5 is slidably provided with the isolation valve plate 6, and the power cable is disconnected;

[0031] As Figures 1-3 As shown in the figure, first, the load pressure regulator 3 and the closing box body 4 are connected with the circuit breaker body 1, and the load voltage of the circuit breaker body 1 is adjusted through the load pressure regulator 3, so that the circuit breaker body 1 can adapt to the voltage and current of the circuit according to the use demand under different scenes;When it is necessary to connect the cable with the circuit breaker body 1, the end of the cable is inserted into the wiring cavity 5 opened at the upper and lower ends of the circuit breaker body 1, so that the end of the cable is located between the limiting point inside the wiring cavity 5 and the isolation valve plate 6, so that the cable can be disconnected by the isolation valve plate 6 controlled by the load pressure regulator 3 and the closing box body 4 in the case of subsequent short circuit and overload.

[0032] In order to solve the problems existing in the use of the existing circuit breaker body 1, the embodiment is characterized in that the front sliding of the circuit breaker body 1 is provided with a closing bracket 9, the closing bracket 9 is sleeved and installed at the front end of the operating handle 2 on the front of the circuit breaker body 1, and the left and right ends of the closing bracket 9 are slidably arranged in the inside of the symmetrically arranged closing box body 4; the inside of the symmetrically arranged closing box body 4 is rotatably provided with a drive gear 7 at the central position, and the inside of the symmetrically arranged closing box body 4 is slidably provided with a drive rack 8 in front; the drive gear 7 in the inside of the symmetrically arranged closing box body 4 is meshingly connected with the drive rack 8 in front, and the upper ends of the left and right drive racks 8 are fixedly connected with the outer ends of the closing bracket 9 on the front of the circuit breaker body 1, and the closing bracket 9 is driven by the drive rack 8 to drive the sleeved and connected operating handle 2 to move up and down;

[0033] The outer ends of the upper and lower isolation valve plates 6 are slidably arranged in the inside of the left and right closing box bodies 4, and the isolation valve plates 6 are driven by the closing box body 4 to move forward and backward, so as to be connected and disconnected; the inside of the symmetrically arranged closing box body 4 is rotatably provided with a drive shaft 10, the upper ends of the symmetrically arranged drive shafts 10 are fixedly connected with the output shaft bottom end of the servo motor 11, the servo motor 11 is fixedly connected with the inside of the closing box body 4, and the middle parts of the symmetrically arranged drive shafts 10 are meshingly connected with the shafts of the drive gears 7 through the bevel gear sets 12; the upper and lower outer walls of the symmetrically arranged drive shafts 10 are fixedly provided with winding rollers 13, the outer walls of the symmetrically arranged winding rollers 13 are woundly connected with the front ends of the traction steel wires 14, the rear ends of the symmetrically arranged traction steel wires 14 are fixedly connected with the outer ends of the isolation valve plates 6, and the isolation valve plates 6 are driven by the rotation of the drive shaft 10 to move forward and backward;

[0034] As Figures 4-6 shown, in the case of overload, short circuit and other situations of the circuit breaker body 1, first of all, the operating handle 2 rotates upward, then the externally sleeved and connected closing bracket 9 moves upward, and the drive racks 8 in the inside of the two closing box bodies 4 are driven by the closing bracket 9 to rise, and when the drive racks 8 drive the meshingly connected drive gears 7 to rotate, the drive shafts 10 are driven by the bevel gear sets 12 to wind the winding rollers 13 and the traction steel wires 14, and the isolation valve plates 6 fixedly connected at the rear ends are driven by the traction steel wires 14 to move forward, and the line is disconnected from the circuit breaker body 1 by the isolation valve plates 6, so as to be manually repaired and trouble-shooting;

[0035] Further, when the line fault voltage is normal, first detected by the load pressure regulator 3, in order to drive the closing box 4 inside the servo motor 11 drive shaft 10 rotation, and drive shaft 10 drive winding roller 13 and traction cable 14 reverse rotation, and then the traction cable 14 is relaxed no longer for the isolation valve plate 6 traction limit, and then by the isolation valve plate 6 connected with the circuit breaker body 1 connected, while rotating drive shaft 10 through the bevel gear set 12 drive gear 7 will mesh connected drive rack 8 drive, so that the downward movement of the drive rack 8 drive end fixedly connected closing bracket 9 downward movement, and then set to connect the operating handle 2 drive after the turnover to ensure the normal work of the circuit breaker body 1.

[0036] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A small automatic reclosing circuit breaker with voltage and load regulation, comprising a circuit breaker body (1), and an operating handle (2) rotatably arranged in the middle of the front face of the circuit breaker body (1); characterized in that Further comprising: A load voltage regulator (3) is fixedly arranged in the middle of the back face of the circuit breaker body (1), and a closing box body (4) is fixedly arranged in the middle of the left and right sides of the circuit breaker body (1); Wherein, the upper and lower ends of the circuit breaker body (1) are equally spaced apart to provide a wiring cavity (5), and the inside of the upper and lower wiring cavities (5) is slidably provided with an isolation valve plate (6) through elastic connection; Wherein, the inside of the symmetrically arranged closing box body (4) is rotatably provided with a drive gear (7) at the center position, and the inside of the symmetrically arranged closing box body (4) is slidably provided with a drive rack (8) in front.

2. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 1, characterized in that: The front end of the closing bracket (9) is slidably arranged on the front end of the operating handle (2) of the circuit breaker body (1), and the left and right ends of the closing bracket (9) are slidably arranged in the inside of the symmetrically arranged closing box body (4).

3. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 2, characterized in that: The load voltage regulator (3) on the back face of the circuit breaker body (1) is connected to the closing box body (4) on the left and right sides of the circuit breaker body (1), and the voltage range is adapted through the adjustment of the load voltage regulator (3), so that the circuit breaker body (1) is driven by the closing box body (4) to be tripped in the case of overload, short circuit, etc., so as to quickly respond to the protection effect.

4. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 1, characterized in that: The symmetrically arranged isolation valve plate (6) inside the wiring cavity (5) drives the power cable to be tripped and isolated, and the outer ends of the upper and lower isolation valve plates (6) are slidably arranged in the inside of the left and right closing box bodies (4), respectively, and the isolation valve plate (6) is driven by the closing box body (4) to move in the front and back directions, so as to operate the connection and disconnection.

5. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 1, characterized in that: The symmetrically arranged drive gears (7) inside the closing box body (4) are meshingly connected with the drive racks (8) in front, and the upper ends of the left and right drive racks (8) are fixedly connected to the outer ends of the closing bracket (9) on the front face of the circuit breaker body (1), and the operating handle (2) is driven by the drive rack (8) to be pulled up and down.

6. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 5, characterized in that: The symmetrically arranged drive shafts (10) are rotatably arranged in the inside of the closing box body (4), and the upper ends of the symmetrically arranged drive shafts (10) are fixedly connected to the output shaft bottom end of the servo motor (11), and the servo motor (11) is fixedly connected to the inside of the closing box body (4), and the symmetrically arranged drive shafts (10) are meshingly connected to the shafts of the drive gears (7) through bevel gear sets (12) in the middle.

7. A small-sized automatic reclosing circuit breaker with voltage and load regulation according to claim 6, characterized in that: The upper and lower sides of the driving rotating shaft (10) are symmetrically provided with winding rotating rollers (13), the outer walls of the symmetrically arranged winding rotating rollers (13) are connected to the front ends of traction steel wires (14), the rear ends of the symmetrically arranged traction steel wires (14) are respectively fixedly connected to the outer ends of the isolation valve plates (6), and the rotation of the driving rotating shaft (10) drives the isolation valve plates (6) to move in the front-back direction.

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