Construction machine

Abstract

The invention discloses construction machinery, which comprises a chassis, a plurality of supporting legs and a stable monitoring system. The stable monitoring system comprises a plurality of sensors and controllers, wherein, the sensors can detect the forces on all the supporting legs and output signals to the controller according to different forces on the supporting legs, the controller can judge the force state of the construction mechanism based on signals sent by the sensor. If the construction machinery is in danger, corresponding measures can be taken by an actuator to ensure the safety of the construction machinery; the sensor can be a strain sensor, or a combination of the strain sensor and a displacement sensor, or a combination of the strain sensor and a proximity switch; the strain sensor is arranged on the outer surface of a cantilever of a bracket and outputs signals based on deformation of the cantilever of the bracket; the displacement sensor can output signals based on the fit clearance between the bottom side of a telescopic boom and a corresponding slideway of the bracket; the proximity switch can output signals based on the fit clearance between the bottom side of the telescopic boom and the corresponding slideway of the bracket.

Description

technical field [0001] The invention relates to a safety monitoring technology of a construction machine, in particular to a construction machine with a stability monitoring system. Background technique [0002] At present, with the increasing attention to the safety of engineering construction, the application of modern control technology to monitor the status of construction machinery in real time has become an important part of various construction machinery. [0003] Among various monitoring measures, the stability monitoring of construction machinery is an important part of monitoring technology. Taking the concrete pump truck as an example, it has a chassis, and a construction arm is arranged above the chassis. The construction arm can rotate around a vertical axis fixed on the chassis, and can deliver concrete to a high place or far away around the chassis. ; In the process of conveying concrete, there is a corresponding distance between the center of gravity of the ...

AI Technical Summary

Problems solved by technology

The disadvantage of this monitoring method is that it is necessary to construct a special outrigger structure to facilitate the installation of the force sensor, which makes the processing and installation of the corresponding components more complicated.

The disadvantages of this monitoring scheme are: it is necessary to construct the hinge shaft connecting the support leg, otherwise the force of the support leg cannot be detected; it is not applicable to the support leg without hinge pin; at the same time, it is complicated to install the resistance variable plate on the pin shaft. In addition, problems such as dustproof and anti-pull also reduce the reliability of the application of resistance sensing chips.

[0008] In short, the current stability monitoring system of construction machinery is complex in manufacturing process and relatively difficult to install; it increases the difficulty of assembly and maintenance of construction machinery. Therefore, there is a need for further improvement of the stability monitoring system of construction machinery

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