Crane boom working parameter measuring method, controller, apparatus, and crane

Abstract

The invention discloses a crane boom working parameter measuring method. A hinge connection point is adopted as a point C. A point B on the top of the boom is connected with a lifting hook pulley. The center of the lifting hook pulley is adopted as a point D. A horizontal range between the point B and the point D is dBD. A point A is set on a crane body (2). A horizontal range d0 and a vertical range h0 between the point A and the point B are measured; a horizontal range dAC between the point A and the point C is measured; and a vertical height hA of the point A relative to the ground is measured. A working amplitude of the boom (1) is calculated according to a formula of d=d0-dAC+dBD, and a working height of the boom (1) is calculated according to a formula that h=h0+hA. The invention also provides a controller and a measuring apparatus employing the measuring method. According to the invention, a differential distance measuring technology is adopted for measuring the working parameters of the crane. Current working parameters of the crane can be precisely obtained without correction. Therefore, reliability and precision of a crane safety protection apparatus are improved, such that safety protection can be effectively carried out.

Description

technical field [0001] The invention relates to a method for measuring the working parameters of a boom, a measurement controller, a measuring device and a crane including the device, in particular to a method for measuring the working range and working height of a boom, a controller, a device and a crane including the device The unit's crane. Background technique [0002] At present, cranes are widely used in power construction, water conservancy and hydropower, nuclear power and other aspects by virtue of their unique advantages. In the safety monitoring system of the crane, it is usually necessary to combine the structural parameters of the crane and the lifting capacity to calculate the safety moment of the crane in real time, so that the crane can work within a safe operating range, so as to ensure the stability of the whole vehicle and prevent the occurrence of tipping accidents. . [0003] For cranes, it can be divided into main boom working condition and auxiliary ...

AI Technical Summary

Problems solved by technology

[0007] However, due to the weight of the boom itself and the stress on the boom, the boom will be deformed, especially when the length of the main boom is long, and the distance between the measured boom length and the actual length of the boom, as well as the actual luffing angle There is also an error between the measurement value of the inclination sensor, so a large number of tests are required to compensate for the error, which is complex, time-consuming and not very accurate, which affects the calculation of the safe moment of the crane, and may even cause a tipping accident

Images