Steering mechanism, omnidirectional traveling chassis and trolley

Abstract

The invention relates to a steering mechanism, which comprises a steering control handle, a crank shaft, a connecting rod, a linkage rod and a restraining mechanism, wherein the steering control handle is coaxially connected with a main shaft of the crank shaft, and drives the crank shaft to rotate, one end of the connecting rod is arranged on the rod journal of the crank shaft in a sleeving manner, and the other end of the connecting rod is hinged to the linkage rod, two steering wheels are connected with the two ends of the linkage rod respectively, and the restraining mechanism is arranged on the connecting rod and/or the linkage rod so as to enable the turning directions of the steering wheels at the two ends of the linkage rod to be consistent. The invention further provides an omnidirectional traveling chassis and a trolley. Through utilizing the steering mechanism and the omnidirectional traveling chassis, the omnidirectional and limitless rotation of the steering wheels of the trolley can be realized, and the problem of deformation of a parallelogram structure is solved.

Description

technical field [0001] The invention belongs to the field of motor technology, and in particular relates to a steering mechanism, an omnidirectional walking chassis and a cart. Background technique [0002] In hospitals or large warehouses, there are many large-scale equipment that require flexible movement, and the maneuvering space left for the equipment is relatively limited. If a traditional steerable chassis is used, it is easily limited by the minimum steering radius of the chassis. The environment affects the passability of the equipment, and then affects the normal work. Existing steerable chassis typically employ additional control handles to control the steerable directional wheels. Under the situation of not needing to manually control the directional wheels, this chassis is equivalent to a general four-wheeled board car, that is, the front two wheels are universal wheels, and the rear two wheels are directional wheels. When the directional wheel is manually con...

AI Technical Summary

Problems solved by technology

The Chinese patent application with application number 201010179818.6 discloses a steering mechanism, which utilizes a parallelogram mechanism to realize steering in a certain angle range without turning the body. The steering mechanism has the advantages of flexible steering and small turning radius, but this steering The disadvantage of the mechanism is: when the equipment needs to move flexibly laterally, it is necessary to use the control handle to turn the directional wheel to the direction of lateral movement. In actual operation, it is necessary to constantly use the control handle to adjust the direction, which is inconvenient to use; in addition, the steering mechanism There is no device to limit the steering angle. When the unconstrained steering angle exceeds the 180° position, the deformation of the parallelogram will occur due to the uneven friction

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