Device for dynamically testing movement state of elevating fire-fighting truck arm rest

Abstract

The invention provides a device for dynamically testing a movement state of an elevating fire-fighting truck arm rest. The device comprises an elevating fire-fighting truck arm rest mechanism, multiple testing modules and an upper computer. The elevating fire-fighting truck arm rest mechanism comprises at least one arm rest section and a working hopper, the working hopper is located at the tail end of the last arm rest section. The testing modules are fixed to the two ends of each arm rest section. One testing module is arranged in the working hopper. The testing modules are in communicated connection with the upper computer. Each testing module comprises modules of a gyroscope and an accelerator, a single chip microcomputer, a GPS module and a communication module. The device can achievesimultaneous and dynamic high-precision working height and horizontal amplitude testing in the movement state of the elevating fire-fighting truck arm rest, speed reduction resting at an extreme position, a pitching angle of the elevating fire-fighting truck arm rest, leveling testing of the working hopper and shake amplitude testing of the working hopper.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a dynamic test device for the motion state of a raised fire truck boom. Background technique [0002] The elevating fire truck is an important equipment for the fire brigade to carry out high-altitude fire fighting and rescue. As a key component for elevating fire trucks, the jib needs to withstand gravity, wind, people or loads in the working bucket, and the stability of its shaking degree, the reliability of each safety limit and limit position protection devices are very important. [0003] The existing detection technology is to test the height and horizontal range of the boom of the raised fire truck through the laser rangefinder. The head and tail of each boom are respectively equipped with laser displacement sensors and reflectors to measure the extension length and angle of the boom. , there are the following problems: 1. The installation is complicated, and the inst...

AI Technical Summary

Problems solved by technology

[0003] The existing detection technology is to test the height and horizontal range of the boom of the raised fire truck through the laser rangefinder. The head and tail of each boom are respectively equipped with laser displacement sensors and reflectors to measure the extension length and angle of the boom. , there are the following problems: 1. The installation is complicated, and the installation position of the reflector needs special treatment, which cannot hinder the recovery of the boom; 2. It is difficult to select the measurement position, and there must be no barrier between the laser displacement sensor and the reflector. Various boards and ladder frames are often installed on the boom frame of the high truck, which will hinder the installation of the device; 3. The junction of the two boom frames is sometimes restricted by the installation position, and the laser displacement sensor of the latter boom frame cannot be compared with the previous one. The reflectors of the boom section are installed at the same position, which will cause the cumulative error of the starting position of the boom section of the latter section (the length and angle of the boom section of the previous section are used as the initial value for the calculation of the boom section of the latter section), and the fire protection The measurement of the entire height of the car causes a large error and the test accuracy is low

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