A method for measuring the rotation angle of a crawler crane
A technology for crawler cranes and slewing angles, which is applied in the directions of measuring devices, measuring angles, surveying and navigation, etc. It can solve the problems that the total station does not include relevant analysis and calculation functions, the coordinates of the slewing centerline are not determined, and the difficulty of measuring slewing angles. To achieve the effect of simple and convenient, stable algorithm and good application promotion
Active Publication Date: 2021-10-08
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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Problems solved by technology
However, there are difficulties in the measurement of the rotation angle of jib cranes. First, the coordinates of the rotation center line are not fixed, and cannot be projected through conventional coordinate conversion methods; second, the software attached to the total station does not include the relevant analysis and calculation functions for rotation angles.
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0035] Main content of this application:
[0036] 1. Total station measurement method
[0037] The main functions of the total station are data collection and coordinate stakeout. This method uses the data collection function of the total station to measure the coordinates of the marked points, and then performs subsequent analysis and processing of the measurement data to obtain the rotation angle. figure 1 It is a schematic diagram of the measurement pr...
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The invention relates to a method for measuring the rotation angle of a crawler crane. The measuring method comprises the following steps: step 1: using a total station to observe a plurality of marking points to obtain observation data of the marking points; step 2: using a total station for the observation data of the marking points The multi-measuring point data is analyzed and processed to reduce the influence of errors; Step 3: Construct the objective function of the turning angle based on the analyzed and processed marked point observation data; Step 4: Use the improved particle swarm optimization algorithm to optimize and obtain the turning angle. Compared with the prior art, the present invention has the advantages of convenient operation, small measurement deviation, stable robustness and good convergence of the algorithm and the like.
Description
technical field [0001] The invention relates to the technical field of cranes, in particular to a method for measuring the rotation angle of crawler cranes. Background technique [0002] The slewing angle is one of the important parameters of the jib crane, and the effective accuracy of its measurement value directly affects the safe operation of this type of crane. In order to improve productivity, jib cranes often perform amplitude-changing and slewing actions frequently, and their lifting moment and anti-overturning moment are changing. When the lifting moment reaches the critical value of anti-overturning moment, safety devices such as lifting moment limiters If the protection device does not act in time, it will cause an overturning accident. Generally speaking, the elevation angle and slewing angle of the main arm of the crane are collected by the rotary encoder and debugged before leaving the factory. However, as the service life increases, its accuracy and accuracy ...
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IPC IPC(8): G01C1/00
CPCG01C1/00
Inventor 许海翔吴峰崎龚文余杰
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES