Trolley bus-operating handle with braking button

Abstract

The purpose of the invention is to provide a trolley bus-operating handle with a braking button. The invention solves the problem that a traffic accident can easily take place when the conventional trolley bus is stopped and then started on a slope. The trolley bus-operating handle comprises a reversing operating handle, a speed operating handle and an electromagnetic valve, the reversing operating handle and the speed operating handle are mounted on a control panel, and the electromagnetic valve is connected with a brake system through a duct. The trolley bus-operating handle is characterized in that: a microswitch is arranged in the hole of the upper end of the speed operating handle, the movable button end of the microswitch is in contact with the restoring spring-tensioned braking button by utilizing a link rod in the transverse hole of the speed operating handle, and the terminal of the microswitch is connected with the electromagnetic valve through a wire in the vertical hole ofthe speed operating handle. The trolley bus-operating handle has the characteristics of compact structure and reasonable design, is easy to operate, prevents the sliding phenomenon which can easily take place in the process of starting on the slope, and greatly enhances the safety and reliability of driving.

Description

technical field [0001] The invention relates to an operating handle for rail and light rail trams, in particular to an operating handle with a brake button which is specially used for electric cars driven by AC motors to prevent the car from slipping when the car is parked on a slope and restarted. Background technique [0002] At present, most trams and light rail cars in my country use DC motor chopper speed control devices, and usually use reversing contactors to change the rotation direction of the motor, and control the current direction of the armature winding of the DC motor through the reversing switch in the traction circuit. Achieve traction and braking. When the motor needs to decelerate, control the reversing switch or brake contactor in the traction circuit to perform energy consumption braking or regenerative braking. The operating handle mainly includes two parts: the reversing operating handle and the speed operating handle. The reversing operating handle is...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a tram operating handle with a brake button specially used for AC motor-driven trams, which solves the problem that existing trams are prone to traffic accidents when parking and starting on slopes, and has a compact structure and a reasonable design. The operation is simple, and the car slipping phenomenon that is easy to occur in the process of starting the car on a slope is eliminated; the safety and reliability of the vehicle are greatly improved.

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