Articulated vehicle steering angle detection device

Abstract

The invention discloses an articulated vehicle steering angle detection device. The articulated vehicle steering angle detection device aims at accurately measuring relative steering angles of front and rear vehicle frames and can eliminate steering angle errors caused when the front and rear vehicle frames reverse and tilt relatively. A supporting frame is fixedly connected to the rear vehicle frame. The two ends of a bearing pin shaft are fixedly connected with the supporting frame and the inner ring of a limiting bearing respectively. The two ends of a pulley bearing pin shaft are fixedly connected with a guide rail pulley bearing and a base. The guide rail pulley bearing is in sliding connection with a V-type guide rail of the supporting frame. A connection plate is hinged to the base. A plate spring is fixedly connected to the connection plate and is in rolling connection with the limiting bearing. A small pin shaft is sleeved with a torsion spring. Two torque arms of the torsion spring are supported on the right end face of the base and the lower surface of the connection plate respectively. An output shaft of an angular displacement sensor and a large pin shaft are installed fixedly and coaxially. The angular displacement sensor is fixedly connected with the connection plate through an elastic bending plate. The articulated vehicle steering angle detection device can accurately measure the relative steering angle of the front and rear vehicle frames.

Description

technical field [0001] The invention relates to a vehicle steering angle detection device, in particular to an articulated loader steering angle detection device. Background technique [0002] The function of the steering system is to control the driving direction of the vehicle. The system should be able to keep the vehicle running in a straight line stably and flexibly change the driving direction according to the requirements. The basic requirements for the steering system are light and flexible operation, stable and reliable operation, and economical and durable use. The steering performance of the vehicle is an important factor to ensure the safe driving of the vehicle, reduce the labor intensity of the driver, and improve the work productivity. The steering system is a key assembly that determines vehicle safety and operating efficiency. Engineering vehicles such as loaders, road rollers, etc. often use pin hinges to achieve good turning performance. The frame of this...

AI Technical Summary

Problems solved by technology

The existing technical solution is to install a linear displacement sensor with a large axial dimension across the two ends of the steering cylinder, and indirectly measure the steering angle of the vehicle by measuring the expansion and contraction of the steering cylinder. However, the required length of the sensor is very large. The position of the steering oil cylinder is low and close to the ground. During the working process, the sensor is easily impacted by the falling and jumping materials, resulting in damage.

There is a spherical joint at the joint between the front frame and the rear frame of the loader, and there is a complex relative rotation between the two. If the detection device is not designed properly, it will easily cause errors in the measurement of the rotation angle. Therefore, how to accurately measure the relative rotation of the front and rear frames Steering angle becomes a key issue in the research of steer-by-wire system

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