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Load switch-fuse combination electric appliance and tripping device thereof

A technology for load switches and combined electrical appliances, applied in electrical switches, emergency protection devices, high-voltage air circuit breakers, etc., can solve problems such as hidden dangers of circuit safety, failure of tripping devices to trip normally, and phase-deficient operation of combined electrical appliances. The tripping force and the effect of increasing the displacement and increasing the driving force

Active Publication Date: 2019-11-15
XUJI GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a tripping device for a load switch-fuse combination, which is used to solve the problem that the tripping force of the load switch-fuse combination in the prior art is too small, which causes the tripping device to fail to trip normally. Technical problem; the corresponding object of the present invention is to provide a load switch-fuse combination, which is used to solve the problem that the tripping device of the load switch-fuse combination in the prior art cannot normally trip and cause the combination to lose phase Operation, technical problems that bring potential safety hazards to the circuit

Method used

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  • Load switch-fuse combination electric appliance and tripping device thereof
  • Load switch-fuse combination electric appliance and tripping device thereof
  • Load switch-fuse combination electric appliance and tripping device thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0036] Such as figure 1 Shown is a simplified structural schematic diagram of a tripping device for a load switch-fuse combination in Example 1. The tripping device for a load switch-fuse combination (hereinafter referred to as the tripping device) includes a frame plate 2, a frame plate 2 There is a guide sleeve 3 on the top, and the guide sleeve 3 is equipped with a guide rod 4 extending along the length direction of the guide sleeve 3. The end of the guide rod 4 passing through the guide sleeve 3 is the trigger end for tripping. The guide rod 4 is used to guide the The sleeve 3 moves towards the direction of the operating mechanism of the load switch, so that the tripping trigger end triggers the micro switch (not shown) in the operating mechanism, so as to realize the tripping action of the tripping device and the opening of the corresponding load switch operate.

[0037] A microswitch trigger shaft (not shown) is also provided on the guide rod 4, and a microswitch (not s...

Embodiment 1

[0051] In Embodiment 1, since the locking piece 9 is hinged on the locking piece 11, the locking piece 9 can swing counterclockwise relative to the locking piece 11, and in the process of driving the driving piece to swing clockwise to push away the locking piece 9, the The driving member pushes away the locking member 9 to drive the locking member 9 to swing counterclockwise, thereby reducing the force of the operator to drive the driving member.

[0052] In Embodiment 2 of the load switch-fuse combined electrical appliance of the present invention, the difference from Embodiment 1 is: as image 3 As shown, the lock piece 109 can also be directly fixed on the chain piece 1011, the lock limit piece is not arranged between the lock piece and the chain piece, and the lock return spring is not arranged between the lock piece and the frame plate. , the locking return spring 1014 and the locking limiter 1015 can be arranged between the chain piece 1011 and the frame plate, or in ot...

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Abstract

The invention relates to a load switch-fuse combination electric appliance and a tripping device thereof. In the load switch-fuse combination electric appliance, the tripping device is arranged between a fuse and a load switch. The tripping device comprises a guide rod to trigger the operating mechanism of the load switch. A driving member is rotatably assembled on a frame plate. A driving springprovides force for urging the guide rod to break away from the driving member. A locking member is supported on the driving member to lock the driving spring in an energy storage state. An interlocking member is rotatably assembled on the frame plate, connected with the locking member, and provided with a lock return spring and a lock limit member. A trigger member comprises a trigger portion which cooperates with a fuse striker, is fixedly connected with the interlocking member, or is hinged to the interlocking member and connected with a trigger member return spring. The driving member is swung to enable the driving spring to store energy. After the striker hits the trigger member, the spring force is transmitted to the guide rod, and the guide rod triggers the operating mechanism of theload switch. The tripping force of the tripping device is increased, and normal tripping of the tripping device is realized.

Description

technical field [0001] The invention relates to a load switch-fuse combination electric appliance and a tripping device thereof. Background technique [0002] In the field of high-voltage switchgear, load switch fuse combination appliances are widely used. [0003] The load switch fuse combination includes a load switch, a chain trip mechanism and a fuse device. When the current exceeds the specified value, the fuse in the fuse device will blow its internal fuse with the heat generated by itself and eject the striker Trigger the tripping of the chain tripping mechanism, and finally complete the opening operation to achieve the purpose of protecting the safety of electricity consumption. [0004] The Chinese utility model patent with the authorized announcement number CN205542560U discloses a fuse tripping mechanism for an integrated vacuum load switch-fuse combination electrical appliance. When the fuse in the fuse is blown, the striker in the fuse will pop out and hit the...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H31/12H01H85/04H01H85/055
CPCH01H31/02H01H31/122H01H85/04H01H85/055
Inventor 吴小钊翟贺鹏赵洪柏白维正张文凯李燕燕张琦
Owner XUJI GRP
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