Improved Structure of Steering Machine of Electronically Controlled Steering Loader

Abstract

The invention discloses an improved structure of an electronic control steering loader steering machine. The improved structure comprises a steering wheel, a steering bar, a steering bar shell, a force feedback limiting mechanism and an angular displacement sensor. The steering bar is rotatably arranged in the steering bar shell in a sleeved mode. One end of the steering bar is fixedly connected with the steering wheel. The middle of the steering bar is connected with the force feedback limiting mechanism. The other end of the steering bar is fixedly connected with the angular displacement sensor. The steering bar is sleeved with the force feedback limiting mechanism, and the force feedback limiting mechanism is mainly composed of an inner support, a check block and bolts. The bolts which are in bolted connection with the two sides of the check block are arranged in limiting guide slots of the inner support, and the length of the limiting guide slots determines the maximum steering angle of the steering wheel; accordingly, the maximum steering angle of the steering wheel can be effectively controlled, the situation that steering of a loaded is disordered due to the fact that input signals of the angular displacement sensor exceed the allowed range is avoided, instant oil pressure impact to a steering cylinder in the loader is also avoided, and the service life of the steering cylinder is prolonged.

Description

technical field [0001] The invention relates to a construction machine, in particular to an improved structure of a steering machine of an electric control steering loader. Background technique [0002] The steering gear of the commonly used electronically controlled steering loader generally detects the angle signal of the steering wheel through the angular displacement sensor installed on the steering gear, and then feeds back the steering signal to the main controller of the system, and then the main controller controls the relevant hydraulic pressure. The valve block is used to realize the steering of the loader, but with this scheme, on the one hand, because the angular displacement sensor does not have the force feedback function (that is, the greater the operating force required to turn the steering wheel), on the other hand, the input of the angular displacement sensor The signals must be within a certain range (such as ±180°). This range corresponds to the steering ...

AI Technical Summary

Problems solved by technology

[0002] The steering gear of the commonly used electronically controlled steering loader generally detects the angle signal of the steering wheel through the angular displacement sensor installed on the steering gear, and then feeds back the steering signal to the main controller of the system, and then the main controller controls the relevant hydraulic pressure. The valve block is used to realize the steering of the loader, but with this scheme, on the one hand, because the angular displacement sensor does not have the force feedback function (that is, the greater the operating force required to turn the steering wheel), on the other hand, the input of the angular displacement sensor The signals must be within a certain range (such as ±180°). This range corresponds to the steering angle of the loader in proportion. When the steering wheel rotation angle exceeds this range, the output signal of the angular displacement sensor will be disordered, which requires a limited steering wheel. Therefore, for drivers, especially novices, when turning the steering wheel, it is too light and has no sense of force, which is not conducive to the control of the steering wheel. Oversteer, firstly, the excessive steering angle is easy to produce instantaneous oil pressure impact on the steering cylinder in the loader, which reduces the service life of the steering cylinder; secondly, the driver cannot judge the steering angle in a short time, and even if the steering is oversteering, he does not know it, and it is easy to cause traffic accidents

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