A rail vehicle grounding device

Abstract

The invention discloses a rail vehicle grounding device, which includes a grounding arm, the upper end of the grounding arm is connected to the vehicle frame through a height adjustment device, the lower end of the grounding arm is connected with a contact through a connecting block, and a conductive ring fixed on the axle is arranged under the contact , the contact contacts the conductive ring when the height of the ground arm drops; the ground arm and the contact are connected by a cable; the motor is vertically fixed on the frame, and a lead screw is fixedly connected under the output shaft; the side of the ground arm is provided with a vertical The chute on the frame is slidingly connected with the sliding bearing fixed on the frame through the chute. There is a blind hole on the upper part of the grounding arm, and an internal thread matching the lead screw is provided in the blind hole; the connection between the frame and the grounding arm are also connected by cables. The invention does not need to change the structure of the existing bogie and wheel sets, does not affect the dynamic balance of the axle, can realize reliable grounding, effectively guarantees the safety of workers and equipment, and has the characteristics of small wear and long life.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a grounding device for rail vehicles. Background technique [0002] With the development of rail transit, the degree of automation of working devices used for line maintenance and maintenance of rail vehicles is getting higher and higher. The working devices use a large amount of electricity as power, and leakage current will inevitably be generated in real working conditions. In order to protect the staff and For the safety of equipment, the frame of the railway maintenance vehicle needs to be grounded with a grounding device. The grounding device also provides simple, effective and economical protection for the wheel set bearings of the bogie, preventing the working current or system fault current and lightning current from passing through the bearing. damage to the bearings, and at the same time avoid the electric corrosion of the wheel set bearings and affect the safe o...

AI Technical Summary

Problems solved by technology

Line maintenance and maintenance of rail vehicles usually use ordinary stereotyped bogies. When the shaft head is grounded and installed, if mechanical installation is used, it is limited by factors such as processing and position. If welding is used, it may cause deformation of the bearing seat and affect the life of the bearing. even pose a safety hazard

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