CN-122025479-A - Protective double-contact breaker

CN122025479ACN 122025479 ACN122025479 ACN 122025479ACN-122025479-A

Abstract

The application relates to the technical field of intelligent power grids, in particular to a protective double-contact breaker which comprises a breaker main body, wherein a protruding part is fixed on the front side of the breaker main body, an operation handle is rotatably arranged on the protruding part, a plurality of conductive inserting pieces are fixedly arranged on the top surface and the bottom surface of the breaker main body, a signboard is arranged on the upper part and the lower part of the front side of the breaker main body along the vertical direction, a connecting plate is detachably arranged on the signboard, limit protruding strips are vertically and fixedly arranged on the two connecting plates, limit sliding grooves are vertically arranged on the left side surface and the right side surface of the breaker main body, limit clamping strips are vertically and fixedly arranged on the limit protruding strips, limit clamping grooves are formed in the inner walls of the limit sliding grooves, elastic clamping pieces are arranged on the periphery of the limit clamping strips, and positioning grooves are formed in the inner walls of the limit clamping grooves.

Inventors

LI QILI
XIA CHUYANG
XIONG ZEWEI
Zheng Senmiao
HU KAILUN
TAO YONGPEI
WANG SAI
ZHENG KAI

Assignees

新驰电气集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (10)

1. The utility model provides a protection type double-contact breaker, includes circuit breaker main part (1), the front side of circuit breaker main part (1) is fixed with bulge (11), operation handle (12) are installed to rotation on bulge (11) leading flank, a plurality of conductive inserting pieces (13) have been set firmly on circuit breaker main part (1) top surface and the bottom surface; The circuit breaker is characterized in that the upper part and the lower part of the front side of the circuit breaker main body (1) are provided with identification plates (2) along the vertical direction, the edges of the left side surface and the right side surface of the identification plates (2) are detachably provided with connecting plates (21) which face the rear side of the circuit breaker main body (1), the side surfaces of the two connecting plates (21) which are far away from the identification plates (2) are vertically and fixedly provided with limit raised strips (22) which are close to each other, and the left side surface and the right side surface of the circuit breaker main body (1) are vertically provided with limit sliding grooves (14) for the limit raised strips (22) to slide in; The limiting convex strips (22) are vertically and fixedly provided with limiting clamping strips (23) which face the front side of the circuit breaker main body (1), the inner walls of the limiting sliding grooves (14) are provided with limiting clamping grooves (15) for clamping the limiting clamping strips (23), the periphery of each limiting clamping strip (23) is provided with elastic clamping pieces (24), and the inner walls of the limiting clamping grooves (15) are provided with positioning grooves (151) for clamping the elastic clamping pieces (24).
2. The protection type double-contact circuit breaker according to claim 1, wherein the elastic clamping piece (24) comprises a pressure spring (241) and an arc-shaped protruding block (242), a placing groove (231) for placing the pressure spring (241) and the arc-shaped protruding block (242) is formed in the limiting clamping strip (23), one side of the arc-shaped protruding block (242) is extruded by the pressure spring (241) to enable a part of the arc-shaped protruding block (242) to protrude out of an opening of the placing groove (231), the outer side face of the protruding portion of the arc-shaped protruding block (242) is an arc face, and the arc length corresponding to the arc face is a minor arc.
3. The protective double-contact circuit breaker according to claim 1, wherein a fixing plate (31) is rotatably mounted on the edges, close to the back side, of the left and right sides of the circuit breaker main body (1), fixing holes (311) are formed in the fixing plate (31), the rotating surface of the fixing plate (31) is parallel to the top surface of the circuit breaker main body (1), and the fixing plate (31) can be rotated to an application state flush with the back side of the circuit breaker main body (1) and rotated to a transportation state attached to the left and right sides of the circuit breaker main body (1).
4. A protection type double-contact circuit breaker according to claim 3, characterized in that the front side of the fixed plate (31) in the application state is provided with a yielding gap (312), and the side of the limit protruding strip (22) facing the back side of the circuit breaker main body (1) is provided with a fixed slot (221) when the limit clamping strip (23) is clamped into the limit clamping groove (15); The inner wall of the yielding gap (312) is rotatably provided with an elastic telescopic rod (32) with active elastic elongation performance, the elastic telescopic rod (32) can rotate to a limiting state towards the front side of the lower breaker main body (1), and the elastic telescopic rod (32) can be elastically clamped into the fixed slot (221) when being in the limiting state and the limiting clamping strip (23) is clamped into the limiting clamping groove (15).
5. The protective double-contact circuit breaker according to claim 4, wherein the opening edge of the fixed slot (221) is provided with a first inclined surface (2211).
6. A protective double-contact circuit breaker according to claim 4, characterized in that the end outer edge of the elastic telescopic rod (32) remote from the circuit breaker body (1) is provided with a second inclined surface (321).
7. A protective double-contact circuit breaker according to claim 4, characterized in that the two fixing plates (31) and the two elastic telescopic rods (32) can be turned simultaneously in a direction approaching the back side of the circuit breaker body (1) to a mutually parallel supporting state; The circuit breaker main body (1) is fixed by rotating the fixing plate (31) and the elastic telescopic rods (32) to a supporting state when being temporarily placed on the ground, and the ends, far away from the circuit breaker main body (1), of the two elastic telescopic rods (32) can be adjusted to a supporting state in a vertical downward mode.
8. The protective double-contact breaker according to claim 7, wherein the connecting plates (21) are rotatably connected with the signboard (2), the two connecting plates (21) can be reversely rotated to a limit state parallel to the signboard (2) after the limit clamping strips (23) slide out of the limit clamping grooves (15), the two elastic telescopic rods (32) are provided with supporting sliding grooves (323) on the side surfaces which are mutually far away from each other in the supporting state, and the inner walls of the supporting sliding grooves (323) are provided with supporting grooves (324); The limiting clamping strips (23) are separated from the limiting clamping grooves (15) when the elastic telescopic rods (32) are in a receiving state, the connecting plate (21) is adjusted to be in a limiting state, the two limiting clamping strips (23) can slide into the supporting sliding grooves (323) at the moment to lock the states of the two elastic telescopic rods (32), and the elastic clamping pieces (24) are clamped into the supporting grooves (324) at the moment.
9. The protective double-contact circuit breaker according to claim 7, wherein the elastic telescopic rod (32) is fixedly provided with a first elastic pad (322) on the end surface far away from the circuit breaker main body (1).
10. A protective double-contact circuit breaker according to claim 1, characterized in that the identification plate (2) is provided with a second elastic pad (25) on the side facing the circuit breaker body (1) when the limit clamping strip (23) is clamped into the limit clamping groove (15).

Description

Protective double-contact breaker Technical Field The application relates to the technical field of smart power grids, in particular to a protective double-contact breaker. Background In the process of intelligent power grid construction and power distribution system upgrading, a small double-contact breaker is used as a core power distribution protection component, and is widely applied to line protection in scenes such as industrial control, civil buildings and the like by virtue of a compact structure and high-efficiency on-off performance. The circuit breaker needs to meet core requirements such as quick wiring, stable breaking, convenient operation and the like, and the structural design directly influences the safety, reliability and installation and maintenance efficiency of a power distribution system. Along with the continuous improvement of the requirements of the smart grid on miniaturization, integration and operation and maintenance convenience of the power distribution equipment, the rationality and the practicability of an auxiliary structure (such as a marking component) of the circuit breaker are also important directions for optimizing and upgrading while maintaining the core electrical performance. The miniature double-contact breaker in the prior art mainly comprises a breaker main body, wherein a protruding part is fixed on the front side of the main body, an operating handle is rotatably arranged on the front side surface of the protruding part, and the operating handle is used for synchronously controlling the on-off of two groups of contact structures (a movable contact and a static contact) in the interior, so that the quick switching-on and switching-off of a circuit is realized. The top surface and the bottom surface of circuit breaker main part have set firmly a plurality of conductive inserting pieces, through the bayonet joint of cable tip and conductive inserting piece grafting cooperation during the wiring, need not complicated wiring and can accomplish the quick connect with the circuit breaker main part, have simplified the installation flow by a wide margin. In order to facilitate the user to identify model parameters and operation specifications, the front side of the main body of the circuit breaker is usually marked by adopting a mode of fixing a plastic nameplate by screws, wherein the plastic nameplate can be flexibly adjusted due to the marking content, and becomes a mainstream application scheme. The plastic nameplate mounting process relies on special tools, workers need to prepare matched tools such as screwdrivers in advance, the complexity of operation and maintenance preparation is increased, the size of screws for fixing the nameplate is small, the screws need to be accurately aligned with threaded holes and continuously screwed during mounting, the operation difficulty is high, fatigue of hands of the workers is easily caused by long-time repeated operation, the mounting, dismounting and replacing efficiency of the nameplate is low due to double limitation of the tools and the fine operation, a large amount of time and cost are consumed, and the overall working progress is seriously influenced particularly in a batch operation and maintenance or emergency repair scene, so that improvement space exists. Disclosure of Invention The application aims to provide a protective double-contact breaker, which solves the problems of dependence on tools, complex operation and low efficiency in the installation and the disassembly of a plastic nameplate in the related technology. The application provides a protective double-contact breaker, which adopts the following technical scheme: A protection type double-contact breaker comprises a breaker main body, wherein a protruding portion is fixed on the front side of the breaker main body, an operation handle is rotatably installed on the front side face of the protruding portion, a plurality of conductive inserting pieces are fixedly arranged on the top face and the bottom face of the breaker main body, a signboard is arranged on the upper portion and the lower portion of the front side of the breaker main body along the vertical direction, connecting plates facing the rear side of the breaker main body are detachably installed on the edges of the left side face and the right side face of the signboard, limit protruding strips which are close to each other are vertically and fixedly arranged on the side faces of the two connecting plates far away from the signboard, limit sliding grooves for enabling the limit protruding strips to slide in are vertically formed in the left side face and the right side face of the breaker main body, limit clamping strips which face the front side of the breaker main body are vertically and fixedly arranged on the limit protruding strips, limit clamping grooves for enabling the limit clamping strips to clamp in are formed in the inner walls of the limit protruding strips, elastic clamping piec