Reversing four-bar linkage wide-angle front-wheel steering system for large coal mine vehicle

Abstract

The invention belongs to the technical field of coal mine auxiliary transport vehicle steering systems, and particularly relates to a reversing four-bar linkage wide-angle front-wheel steering system for a large coal mine vehicle. The problem that using demands can not be met when an existing steering mechanism is used for coal mine underground vehicles is solved. The reversing four-bar linkage wide-angle front-wheel steering system for the large coal mine vehicle comprises a left tire assembly and a right tire assembly which are symmetrically arranged; the tire assemblies are fixedly connected to hydro-pneumatic suspension cylinders connected with a rack through axle boxes; pistons and cylinder barrels of the hydro-pneumatic suspension cylinders are connected with lower torsion beams and upper torsion beams respectively, and the lower torsion beams and the upper torsion beams are in hinged connection; a reversing four-bar linkage mechanism is connected between the hydro-pneumatic suspension cylinders on the left side and the right side, and comprises power steering cylinders, a steering drive arm and a steering traction bar; the steering drive arm is in hinged connection with the left tire assembly and the right tire assembly respectively through the steering traction bar which is in hinged connection with the steering drive arm; the power steering cylinders are further hinged to the left side and the right side of the steering drive arm; and the steering drive arm and the rack are connected and fixed through a connecting pin.

Description

technical field [0001] The invention belongs to the technical field of steering systems for auxiliary transport vehicles used in coal mines, in particular to a reverse four-link large-angle front wheel steering system for large coal mine vehicles. Background technique [0002] The coal mine underground roadway is narrow, the line of sight is limited, and the requirements on the turning radius of the vehicle are extremely strict. For large coal mine auxiliary transport vehicles, a central articulated steering mechanism or a steering bridge is generally used, and the maximum steering angle is about 45°, which is far from meeting the needs of the roadway. Inside turns and U-turn requirements. Moreover, the central articulated steering mechanism will increase the length of the vehicle, and the steering axle not only bears the vertical load, but also bears the longitudinal force generated by vehicle acceleration and braking and the lateral force caused by vehicle turning. The for...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing steering mechanism used in coal mine underground vehicles cannot meet the requirements of use, the present invention provides a reverse four-link large-angle front wheel steering system for large coal mine vehicles

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