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Trip actuator

It is a technology of executive mechanism and tripping, which is applied in the direction of protection switch operation/release mechanism, etc. It can solve the problems that the circuit breaker cannot be opened in time, there are many bracket parts, and the friction force is large, so as to achieve good economic and social benefits and compact structure. , the effect of reducing friction

Active Publication Date: 2016-06-29
JINGJIANG HAIYUAN NONFERROUS METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent has the following defects in use: 1) There are many parts in the bracket, and the installation is complicated; 2) The friction force at the contact part of the bracket and the pull rod mechanism is large, and the circuit breaker cannot be pulled in time to open the gate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0026] Embodiment 1. The rear end of the roller shaft 1601 is welded to the pull rod 16. Bearings or rollers are installed on the roller shaft 1601. The bearings or rollers can roll in the opening groove 105 on the front plate 102.

specific Embodiment 2

[0027] Embodiment 2: The rear end of the roller shaft 1601 is bolted to the pull rod 16 . Bearings or rollers are installed on the roller shaft 1601 . The bearings or rollers can roll in the opening groove 105 on the front plate 102 .

specific Embodiment 3

[0028] Specific embodiment three, guide strips are set on the front and back sides of the opening slot 105 of the front plate 102 to guide the bearings or rollers on the roller shaft 1601 to prevent deviation.

[0029] When working normally, the permanent magnet 2 overcomes the compression force of the return spring 8, so that the moving iron core 11 is attracted to the right end surface of the shaft 6; when a large current appears in the working circuit, the controller will send a pulse voltage to the driving coil 5, At this time, the driving coil 5 will be energized to obtain a reverse magnetic field force, thereby weakening the attraction force of the permanent magnet 2 to the shaft 6, so that the shaft 6 pushes the moving iron core 11 under the action of the elastic force of the return spring 8 and then returns, and the moving iron core 11. Touch and release the torsion spring 12. The buckle surface of the metal hook of the torsion spring 12 disengages the pull rod 16. The ...

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Abstract

The invention discloses a trip executing mechanism. A support is of a C-shaped structure, each of a front plate and a rear plate of the support is special-shaped plate, the front plate and the rear plate are parallel and connected through a left side plate, an included angle between the front plate and the left side plate is 90 degrees, the lower end of the front plate is in the shape of a step, a supporting plate is arranged in the middle section of the step, the supporting plate backwards extends in a manner that the supporting plate and the front plate form a 90-degree angle, a rotating shaft axial hole is formed below the right portion of the front plate, a rightward open groove is formed above the rotating shaft axial hole, a top plate is arranged above the left portion of the rear plate and forwards extends in a manner that the top plate and the rear plate form a 90-degree angle, the rotating shaft axial hole of the front plate and that of the rear plate are identical in diameter and coaxial, a fixing plate bayonet of the front plate and that of the rear plate are identical in shape and size, and a roller shaft is arranged on the front end face of the right side of a cross plate in the middle of a pull rod. The support is integrally formed through sheet-metal working, so that the trip executing mechanism is compact in structure and reliable in working, production cost is lowered, friction force of a position where the support contacts with the pull rod is reduced, and a circuit breaker can be timely pulled for switching off.

Description

technical field [0001] The invention belongs to the field of circuit breaker accessories, in particular to a tripping actuator. Background technique [0002] At present, the tripping function of circuit breakers and thermal magnetic residual current circuit breakers with reclosing function mainly depends on tripping coils and tripping circuits. When the protected circuit passes normal current, the electromagnetic force generated by the electromagnet of the circuit breaker is less than the spring tension as the reaction force, the armature cannot be attracted by the electromagnet, and the circuit breaker keeps running normally; and when the current in the circuit exceeds the normal When the current is overloaded several times, or when a short-circuit fault occurs in the line, the electromagnetic force generated by the electromagnet of the circuit breaker is greater than the spring tension as the reaction force, the armature is attracted by the electromagnet, the main contact ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/24
CPCH01H71/24
Inventor 宋和明马海军
Owner JINGJIANG HAIYUAN NONFERROUS METAL MATERIAL