Engineering machinery and safety state determining method, device and system thereof

Abstract

The invention provides engineering machinery and a safety state determining method, a device and a system thereof. The method includes the following steps: constructing at least one grade of safety control area according to the position of the engineering machinery after support legs are unfolded; calculating an effective mass center of the engineering machinery; judging the position relation between the effective mass center of the engineering machinery and at least one grade of safety control area; and determining safety state of the engineering machinery according to the position relation. The device comprises a safety control area construction module, an effective mass center calculation module, a position relation determining module and a safety state determining module. The system used for determining the safety state of the engineering machinery is further provided. The system comprises the device, a first group of sensors used for detecting stretching quantity of the support legs of the engineering machinery in the horizontal direction and a second group of sensors used for detecting moving parameters of operation parts. The engineering machinery comprises lower equipment, a rotating platform and the operation parts and further comprises the device or the system.

Description

technical field [0001] The present invention relates to a method and device for determining a safe state applied to construction machinery, in particular to a method and device for determining a safe state for operating components of a construction machine in any support area and achieving the best operating range. It relates to engineering machinery using the device. Background technique [0002] When the aerial ladder fire truck is working, it needs to expand the outriggers to increase the working range of its top, which is convenient for the development of various rescue work. There are many forms of outrigger expansion, including H-shaped outriggers, X-shaped outriggers, and swing-type outriggers similar to pump truck systems. [0003] At present, the aerial ladder fire truck can work with all outriggers or one outrigger unfolded, so as to adapt to complex and emergency rescue work. When the outriggers are fully unfolded, the operating range of the aerial ladder reache...

AI Technical Summary

Problems solved by technology

When the outriggers are fully unfolded, the operating range of the aerial ladder reaches the maximum, but at this time the space required for the outriggers to be expanded is very large; only one side of the outriggers has the advantage of small space requirements, but it greatly reduces the size of the aerial ladder fire truck. range of rescue

Figure 7 and Figure 8 The safe working area of ​​the aerial ladder when the outriggers of the relevant aerial fire truck are fully expanded and only one side of the outrigger is unfolded are respectively shown. Through comparison, it can be seen that when only one side of the outrigger is expanded, the required space is small, but the operation of the aerial ladder The range is also reduced by almost half

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