CN-121983462-A - Circuit breaker control switch and circuit breaker

CN121983462ACN 121983462 ACN121983462 ACN 121983462ACN-121983462-A

Abstract

The invention provides a circuit breaker control switch and a circuit breaker, which comprise a main shaft welding assembly, a rigid connecting piece, an opening and closing control module and a mounting assembly, wherein the main shaft welding assembly comprises a main shaft and a crank arm sleeved outside the main shaft, the crank arm and the main shaft are integrally formed after being welded, the main shaft welding assembly is rotatably arranged on the side wall of the mounting assembly, and the opening and closing control module is connected with the crank arm through the rigid connecting piece and is used for controlling the opening and closing of the circuit breaker control switch. Moreover, compared with the traditional split structure, the novel split type main shaft welding assembly has the advantages of fewer parts, simple structure, reduced assembly procedures, reduced production cost and assembly difficulty, and reduced risk of faults caused by loosening or failure of the connecting piece.

Inventors

Request for anonymity
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Assignees

厦门宏源顺电力设备有限公司

Dates

Publication Date: 20260505
Application Date: 20260122

Claims (10)

1. The breaker control switch is characterized by comprising a main shaft welding assembly, a rigid connecting piece, an opening and closing control module and a mounting assembly; The main shaft welding assembly comprises a main shaft and a crank arm sleeved outside the main shaft, wherein the crank arm and the main shaft are both made of metal materials; The crank arm and the main shaft are welded into a whole; the main shaft welding assembly is rotatably arranged on the side wall of the mounting assembly; And the breaking control module is connected with the crank arm through the rigid connecting piece and is used for controlling breaking of the breaker control switch.
2. The circuit breaker control switch of claim 1 wherein said lever and said main shaft are integrally formed by a laser welding process.
3. The circuit breaker control switch of claim 2 wherein the crank arm and the main shaft are carbon steel.
4. The circuit breaker control switch of claim 3 wherein the on-off control module comprises an insulating pull rod, a flexible connection, a vacuum interrupter and a support base; The flexible connecting piece is made of conductive materials, and the insulating pull rod is made of insulating materials; the upper end of the insulating pull rod is rotationally connected with the main shaft welding assembly through the rigid connecting piece; The soft connecting piece and the supporting seat are respectively fixed on the side wall of the installation component; the vacuum arc-extinguishing chamber is embedded in the mounting position of the supporting seat; When the circuit breaker control switch is in a first state, the upper end and the lower end of the vacuum arc extinguishing chamber are contacted with each other; when the breaker control switch is in a second state, the upper end and the lower end of the vacuum arc-extinguishing chamber are separated.
5. The circuit breaker control switch of any one of claims 1-4 further comprising a four bar linkage assembly, a swing arm, and a bumper; the four-bar linkage assembly is provided with two ends which are used for being rotationally connected with the side wall of the installation assembly, one of the two ends is sleeved with a swing arm, and the swing arm is rotationally connected with one end of the four-bar linkage assembly; the buffer piece is arranged on the side wall of the mounting bracket, and the swing arm can be abutted with the buffer piece in the rotating process.
6. The circuit breaker control switch of claim 5 wherein the dampener is a screw.
7. The circuit breaker control switch of claim 6 wherein the cushioning member comprises a silicone, rubber, fluororubber, or thermoplastic elastomer.
8. The circuit breaker control switch of claim 5 further comprising a moving contact, a lower stationary contact, a ground contact, and an upper stationary contact; The upper fixed contact is arranged in the mounting seat; The four-bar linkage assembly is rotationally connected with the moving contact, and the moving contact is connected with the lower fixed contact through a flexible connecting piece; The movable contact can be contacted with or separated from the grounding contact and the upper fixed contact in the rotating process.
9. The circuit breaker control switch of claim 8 wherein, The grounding contact comprises an arc-shaped top, a contact part and a fixing part, wherein the contact part and the fixing part extend from two ends of the arc-shaped top to the ground; the switch contact is separated from or contacted with the contact part in the rotating process; the fixing part is arranged at the bottom of the mounting assembly and is electrically connected with the grounding conductor.
10. A circuit breaker characterized in that the opening and closing control is performed using the circuit breaker control switch according to any one of claims 1-9.

Description

Circuit breaker control switch and circuit breaker Technical Field The invention relates to the field of electrical equipment, in particular to a circuit breaker control switch and a circuit breaker. Background The breaker switch is a circuit protection core device, can manually or automatically cut off a fault circuit, transmits operation force through a main shaft welding assembly, drives a contact piece to be separated from a grounding contact, realizes circuit on-off, prevents electrical accidents caused by overload, short circuit and the like, and ensures safe and stable operation of an electricity utilization system. However, the existing breaker control switch has obvious defects in design, on one hand, the sectional area design of an internal conductive loop, the conductivity of a contact material and the control precision of contact pressure do not meet the use requirement of a high-current working condition, the problems of overhigh contact temperature rise, arc burning and the like easily occur when high current passes, the service life and the operation stability of the switch are affected, on the other hand, the existing main shaft welding assembly and a rigid connecting piece are connected and driven by adopting a cam structure, the number of the cam structure parts is large, the structure is complex, the assembly process is complicated, the cam is easily worn in the long-term operation process, the transmission precision is reduced, the consistency and the reliability of the switch action are affected, in addition, the hardness of the material of the core transmission parts such as the existing main shaft welding assembly is insufficient, the deformation and the abrasion easily occur in the long-term mechanical operation process, the transmission precision is reduced, the consistency and the reliability of the switch action are not guaranteed, and the industrial application scene with high load and high reliability is difficult to adapt. Disclosure of Invention The invention aims to provide a circuit breaker control switch and a circuit breaker, which are used for improving the overall strength, bending resistance and current carrying capacity of the circuit breaker control switch. The invention discloses a breaker control switch, which comprises a main shaft welding assembly, a rigid connecting piece, an opening and closing control module and a mounting assembly, wherein the main shaft welding assembly is connected with the rigid connecting piece; The main shaft welding assembly comprises a main shaft and a crank arm sleeved outside the main shaft, wherein the crank arm and the main shaft are both made of metal materials; The crank arm and the main shaft are welded into a whole; the main shaft welding assembly is rotatably arranged on the side wall of the mounting assembly; And the breaking control module is connected with the crank arm through the rigid connecting piece and is used for controlling breaking of the breaker control switch. Furthermore, the crank arm and the main shaft are integrally formed by adopting a laser welding process. Furthermore, the crank arm and the main shaft are made of carbon steel. Further, the flexible connecting piece is made of conductive materials, and the insulating pull rod is made of insulating materials; the upper end of the insulating pull rod is rotationally connected with the main shaft welding assembly through the rigid connecting piece; The soft connecting piece and the supporting seat are respectively fixed on the side wall of the installation component; the vacuum arc-extinguishing chamber is embedded in the mounting position of the supporting seat; When the circuit breaker control switch is in a first state, the lower end of the insulation pull rod and the upper end of the vacuum arc-extinguishing chamber are both in contact with the soft connecting piece. Further, the circuit breaker control switch further comprises a first rotating assembly, a switch contact piece, a first rotating assembly, a buffer piece and a grounding contact; the first rotating component is rotatably arranged on the side wall of the mounting component and is rotatably arranged on a base arranged in the mounting component; When the circuit breaker control switch is in a first state, the upper end and the lower end of the vacuum arc extinguishing chamber are contacted with each other; when the breaker control switch is in a second state, the upper end and the lower end of the vacuum arc-extinguishing chamber are separated. Further, the device also comprises a four-bar assembly, a swing arm and a buffer piece; the four-bar linkage assembly is provided with two ends which are used for being rotationally connected with the side wall of the installation assembly, one of the two ends is sleeved with a swing arm, and the swing arm is rotationally connected with one end of the four-bar linkage assembly; the buffer piece is arranged on the side wall of the mounting bracket, and the