Vacuum circuit breaker with rack and pinion steering transmission

A technology of vacuum circuit breaker and steering transmission, applied in high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of large transmission loss, unequal stroke, eccentric operating force, etc., to overcome unequal stroke and improve reliability , the effect of stabilizing the operating force and displacement

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A technology of vacuum circuit breaker and steering transmission, applied in high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of large transmission loss, unequal stroke, eccentric operating force, etc., to overcome unequal stroke and improve reliability , the effect of stabilizing the operating force and displacement

CN105304401AActive Publication Date: 2016-02-03BEIJING CED RAILWAY ELECTRIC TECH

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specific Embodiment approach

[0015] The rack and pinion steering transmission vacuum circuit breaker of the present invention has a preferred specific embodiment as follows:

[0016] The vacuum circuit breaker is provided with a movable contact seat and an insulating pull rod, and a rack and pinion steering transmission mechanism is arranged between the insulating pull rod and the movable contact seat.

[0017] The rack and pinion steering transmission mechanism includes a long gear fixed on the breaker flange through a gear shaft. The upper end of the insulating rod is equipped with a vertical rack groove, and the upper end of the vertical rack groove is connected with the vertical guide rod. Assembly, the outer end of the moving contact seat is equipped with a horizontal rack groove, the other end of the horizontal rack groove is assembled with the horizontal guide rod, and the horizontal rack groove and the vertical rack groove are respectively equipped with teeth The rack is engaged with the long gear...

specific Embodiment

[0025] Such as figure 1 As shown, the overall structure of the upper insulator horizontal vacuum circuit breaker includes: base 1, support insulator 4, upper insulator 2, lower insulator 3, steering operating mechanism, etc. The present invention has designed a full set of steering operating mechanism, including parts and assembly layout thereof.

[0026] Such as figure 2 and image 3 As shown, the components of the steering mechanism include: insulating pull rod 6, horizontal rack slot 7, vertical rack slot 8, long gear one 9, long gear two 10, horizontal guide rod 11, vertical guide rod 12, linear Bearing 13, rack one 14, rack two 15, rack three 16, rack four 17, moving contact seat 18, etc.

[0027] Such as Figure 4 As shown, the two long gears are fixed on the circuit breaker flange through the gear shaft, the lower end of the vertical rack groove is assembled and connected with the insulating pull rod, the upper end is assembled with the vertical guide rod through a...

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Abstract

The invention discloses a vacuum circuit breaker with rack and pinion steering transmission. The vacuum circuit breaker is internally provided with a moving contact seat and an insulated pull bar, and a rack and pinion steering transmission mechanism is arranged between the insulated pull bar and the moving contact seat. The rack and pinion steering transmission mechanism comprises long pinions which are fixed to a flange of the circuit breaker via a gear shaft, the upper end of the insulated pull bar is provided with a vertical rack groove, the upper end of the vertical rack groove is assembled with a vertical guide rod, the outer end of the moving contact seat is provided with a horizontal rack groove, the other end of the horizontal rack groove is assembled with a horizontal guide rod, racks are mounted in the horizontal and vertical rack grooves respectively, and the racks are assembled with the long pinions in an engaged manner. Defects of connecting rod transmission are avoided, stable operating force and displacement is provided for a vacuum moving contact, and the reliability of the vacuum circuit breaker is improved.

Description

technical field [0001] The invention relates to a vehicle-mounted pneumatic vacuum circuit breaker for 25kV electrified railways, in particular to a rack and pinion steering transmission vacuum circuit breaker. Background technique [0002] The vacuum circuit breaker is suitable for all types of electric locomotives and motor vehicles with main line AC 25kV. It is installed on the roof of the locomotive or motor car. It is the main switch for electrical connection and breaking between the whole vehicle and the catenary. equipment. When various serious faults occur in the vehicle, the vacuum circuit breaker can quickly, reliably and safely cut off the main power supply of the vehicle, thereby protecting the electrical equipment of the vehicle. The structural feature of the vacuum circuit breaker is single-fracture cylinder transmission and electro-pneumatic control. It uses vacuum as the insulating medium and arc extinguishing medium, and uses the high dielectric strength in...

Claims

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Application Information

Patent Timeline

03 Feb 2016

Publication

CN105304401A

IPC: H01H33/666

CPC: H01H33/666

Inventors: 侯健伟; 王俊峰