Connecting device during integral lifting of bogie and axle box of subway engineering vehicle

Abstract

The invention provides a connecting device during integral lifting of a bogie and an axle box of a subway engineering vehicle. A spring upper seat and a spring lower seat are located between a bogie frame and a wheel set axle box; the spring upper seat is fixedly connected to the bogie frame; a process pin connected to the bogie frame passes through center holes on the spring upper seat and the spring lower seat to extend out of the spring lower seat; the lower end of the spring lower seat is adapted to a mounting hole in the wheel set axle box; a vibration damping pad sleeves the spring lowerseat; and after the lower end of the process pin is detachably fixedly connected with a locking piece, rigid connection between the bogie frame and the wheel set axle box during lifting is realized.The lifting empty running of the bogie frame and the wheel set axle box is eliminated during integral lifting, the dislocation of a buffer spring during the lifting is avoided, the risk that a singlestage vertical oil damper exceeds the maximum lifting stroke is reduced, the safety and reliability during integral lifting of the bogie frame and the wheel set axle box are guaranteed, lifting equipment is high in utilization rate, reasonable in design, economical and applicable, and the safety and reliability of operation are improved.

Description

technical field [0001] The invention belongs to a subway engineering vehicle bogie, and in particular relates to a connection device for overall hoisting of a subway engineering vehicle bogie axle box. Background technique [0002] At present, the installation of the buffer spring between the bogie frame and the wheel-to-axle box of the subway engineering vehicle adopts process pins and flat pins to pre-compress the buffer spring. When the bogie frame is hoisted with the vehicle as a whole, the hydraulic jacking equipment lifts the frame, the frame drives the bogie frame to lift, and the bogie frame drives the process pin and flat pin to lift up. When the flat pin and After the reserved clearance at the bottom of the wheel-to-axle box is exhausted, the flat pin and the bottom of the wheel-to-axle box are mutually limited to realize the rigid connection between the bogie frame and the wheel-to-axle box, and then realize the bogie frame and the wheel-to-axle box There is no b...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a connecting device for overall hoisting of the bogie axle box of a subway engineering vehicle. After the lower end of the process pin is detachably fixedly connected with the locking piece, the hoisting of the bogie frame and the wheel-to-axle box is realized. The rigid connection at the same time solves the problem of poor applicability of hydraulic jacking equipment, eliminates the hoisting idle stroke of the bogie frame and the wheel-to-axlebox during overall hoisting, avoids the misalignment of the buffer spring during hoisting, and reduces a series of vertical oil pressure. The risk that the shock absorber exceeds the maximum lifting stroke ensures the safety and reliability of the integral hoisting of the bogie frame and the wheel-to-axle box. The jacking equipment has a high utilization rate, reasonable design, simple structure, and economical applicability, which improves Operational Safety and Reliability

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