Winding speed detection device and method

Abstract

The invention relates to a hoist speed detection device and method. The hoist speed detection device includes: a speed reducer and a speed detection sensor (3). The speed reducer is arranged on one side of the hoist drum (2). The hoisting drum (2) is arranged coaxially, which can increase the speed of the hoisting drum (2) according to the preset speed-up ratio, and the speed detection sensor (3) is set at a position close to the circumference of the final gear at the output end of the reducer. The number of rotating teeth or the number of turns of the final gear can be detected in real time to determine the rotating speed of the hoisting drum (2). The device and method of the present invention can detect the speed of the hoisting system in real time, and improve the detection accuracy; moreover, the structure is simple, the installation is convenient, and there is no need to modify the internal structure of the motor, so it can reduce the difficulty of processing and assembly and make the detection easier , thereby reducing the detection cost; in addition, the structure is relatively independent and easy to maintain.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a hoisting speed detection device and method. Background technique [0002] The winch system in construction machinery is a hoisting device that realizes the lifting movement of heavy objects and controls the lifting speed of heavy objects. The hoisting system consists of a hoisting reducer, a drum, and a wire rope wound on the drum. The periodic rotation of the drum is controlled by a hydraulic motor to retract and unwind the hoisting wire rope, and further realize the lifting of heavy objects. [0003] In order to control the movement of the reel more accurately, it is best to detect the speed of the winch system. The traditional technology mainly uses the speed detection sensor to mesh with the outer ring of the hoist drum to detect the speed of the outer ring of the hoist drum. The speed detection sensor relies on The fixed tooling is connected on the winch support. Alt...

AI Technical Summary

Problems solved by technology

Although the detection device can detect the winch speed in real time and has high detection accuracy, it needs to add a gear plate inside the winch motor. The production of this kind of motor requires re-opening the mold for processing the motor, and the processing technology requirements are relatively high. High and high manufacturing costs, which make the detection difficult and expensive, so it cannot be widely used in the domestic construction machinery industry

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