Steering wheel independent suspension system

Abstract

The invention discloses a steering wheel independent suspension system comprising a steering wheel mechanism, a main mounting frame, a damping damper, and a connecting arm; the main mounting frame isarranged on the steering mechanism for being connected with a car body; lower ends of the damping damper and the connecting arm are both connected with the main mounting frame in a hinged mode; and upper ends of the damping damper and the connecting arm are both connected with the car body in a hinged mode. The steering wheel independent suspension system is reasonable in structural design, the ability of obstacle climbing ability and dynamic regulation ability of the steering wheel can be improved, high load capacity of a steering wheel AGV and flexible athletic ability are furthest played, the system is stable and reliable, the vibration is small, the service life of the steering wheel is prolonged, and the use cost is reduced.

Description

technical field [0001] The invention relates to the field of AGV drive technology, in particular to a steering wheel independent suspension system. Background technique [0002] The steering wheel mechanism has the characteristics of strong bearing capacity, good flexibility and high positioning accuracy, and is one of the important development directions of the heavy-duty AGV drive mode in the future. At present, the steering wheel mechanism has been maturely applied in industries such as laser forklifts, combined AGVs and industrial robots, and its high reliability and stability during operation have been well reflected in the application. [0003] At present, the commonly used steering wheel AGV generally adopts the form of diagonal distribution of double steering wheels (as follows Figure 4 As shown), that is, the two steering wheels a and the two load-bearing wheels b are arranged diagonally, and a magnetic navigation sensor c is provided on each side to realize the fu...

AI Technical Summary

Problems solved by technology

However, the existing dual steering wheel AGV generally has the following problems: 1) poor obstacle-crossing ability, high requirements on the ground conditions in the working environment area, and limited use; 2) lack of shock absorption system, resulting in poor dynamic performance of the load platform, which cannot meet Used as a mobile platform for carrying precision measuring instruments; 3) The installation form is complicated, and the processing requirements for the structure body are high; 4) The wheels are severely worn, the service life is short, and the maintenance cost of the whole life cycle is high

It still has the following disadvantages: 1) The floating plate is rigidly connected with the car body, the dynamic performance of the car body adjustment is poor during the obstacle-crossing process, and the positioning shaft is subject to bending stress, which is easy to deform and break; 2) The single spring structure absorbs shock, on the one hand It is easy to sway during exercise, which is also one of the important factors for noise generation. On the other hand, the requirements for spring matching are also higher

[0005] The traditional rudder wheel drive damping mechanism usually uses a single spring, but this also dooms the mechanism to have the following problems: 1. It has a better filtering effect on low-frequency vibrations, but it is more likely to generate resonance; 2. It is prone to swing during movement, and the entire mechanism Can produce annoying noise and may rub against the inner wall of the limited shaft, thereby shortening the life of the elastic element

In this dynamic process, if the connecting part of the suspension and the car body is rigidly connected to the car body, when the posture of the steering wheel itself is not stable, some supporting elements of the steering wheel suspension are prone to bending and torsion deformation. In extreme cases, it may even break

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