Excavator bucket rod rotation angle measuring device

Abstract

The invention provides an excavator bucket rod rotation angle measuring device. A movable arm is fixedly connected with a pin shaft; and the movable arm is hinged with a bucket rod through the pin shaft. The excavator bucket rod rotation angle measuring device comprises a rotating disc, a positioning rod, a drive rod and a magnetic resistance angle sensor. The rotating disc is provided with an assembly hole; the positioning rod is connected to the pin shaft axis center position and is co-axis with the pin shaft. The tail end of the positioning rod is assembled and connected to the assembly hole in the rotating disc through a bearing. One end of the drive rod is connected with the bucket rod, and the other end of the drive rod is connected with the rotating disc. The magnetic resistance angle sensor comprises magnet pieces and a sensor main body. The magnet pieces are arranged on the rotating disc; the sensor main body is arranged on the movable arm; and the sensor main body is internally provided with a magnetic induction element. The beneficial effects are that the device is convenient to assemble, disassemble and maintain, and can accurately measure the rotation angle of the bucket rod; and the angle sensor is high in reliability.

Description

technical field [0001] The invention relates to the technical field of excavators, in particular to an excavator arm rotation angle measuring device. Background technique [0002] With the improvement of the intelligence level of construction machinery, excavators have begun to develop in the direction of semi-automatic or fully automatic control. The premise of realizing semi-automatic or fully automatic control is that the excavator can perceive its own posture, and can measure the rotation angle of the boom, stick, and bucket in real time. The stick of the excavator is connected to the boom through a pin shaft, and the stick rotates around the pin shaft of the boom under the push of the stick hydraulic cylinder. At present, there are two methods for measuring the movement angle of the stick: displacement measurement and angle measurement. [0003] Displacement measurement is to replace the stick hydraulic cylinder with a stroke sensing cylinder with a displacement senso...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a device for measuring the rotation angle of the arm of an excavator, which solves the problem that the rotation axis of the angle sensor used to measure the rotation angle of the arm is difficult to be coaxial with the pin shaft, which leads to inaccurate measurement of the rotation angle of the arm and the reliability of the angle sensor lower sex problems

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