Mobile crane and support leg pressure detecting and controlling device thereof

Abstract

The invention discloses a support leg pressure detecting and controlling device comprising a detection part, a controller and an execution part, wherein the detection part is arranged on a support leg and is used for detecting the pressure of the support leg and transmitting a pressure signal; the controller is used for receiving the pressure signal and transmitting a control signal according to the pressure signal; and the execution part is used for controlling a crane to work or stop. According to the support leg pressure detecting and controlling device, the stress of each support leg of the crane during work can be detected and whether the work condition of the each support leg of the crane is safe or not is analyzed according to the stress; when the stressed condition of the support leg is abnormal, the controller transmits the control signal and relevant valves are closed or switches are turned off by the execution part according to the control signal, so that the crane stops working. Therefore, the work safety of a mobile crane is greatly improved and the mobile crane is more reliable. The invention also provides the mobile crane with the support leg pressure detecting and controlling device.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an outrigger pressure detection and control device for a mobile crane. In addition, the present invention also relates to a mobile crane comprising the above-mentioned outrigger pressure detection and control device. Background technique [0002] With the continuous development of cranes to large tonnage and super large tonnage, the combination of machine, electricity, calculation and hydraulic makes the crane different from the traditional crane that only completes a single job, and becomes more intelligent and automated, and the human operation is simpler and more convenient. Convenience, but what follows is that the entire control system is more complex, and the requirements for safety and reliability are getting higher and higher. Product safety has become an important factor in competition. At the same time, important parameter information also needs to be displayed on ...

AI Technical Summary

Problems solved by technology

However, when the crane is in operation, the operator can only observe it through the monitor in the cab when getting off the car, and cannot clearly know the force of each leg in the operating cab, which makes it very inconvenient for the operator to observe the pressure when operating in the cab , even because the pressure observation does not affect the judgment of the operator in time, a safety accident occurs

[0006] In addition, the power supply of the pressure sensor is provided by the battery that gets off the vehicle. Since the pressure detection runs through the entire operation process, when the crane arrives at the predetermined location and the operation can be stopped after getting off the vehicle, it is still necessary to continuously provide power to the pressure sensor, so that the battery that gets off the vehicle is always powered. status, power consumption

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