Method for measuring and calculating stable gravity center of automobile crane in working state
A technology of truck cranes and working conditions, which is applied in the testing of machines/structural components, static/dynamic balance testing, measuring devices, etc., which can solve problems such as large calculation errors and poor real-time performance, and achieve the effect of safety and stability guarantee
Inactive Publication Date: 2020-07-03
HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC
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Problems solved by technology
[0004] In order to ensure the anti-overturn safety of the truck crane, the difficulty of the existing technology is to calculate the stable center of gravity in the working state of the crane accurately in real time. The existing technology has large calculation errors and poor real-time performance.
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[0028] The technical scheme of the present invention will be further described below through specific embodiments:
[0029] A boom horizontal angle sensor, a boom inclination sensor and a boom support force sensor are installed on the truck crane. The boom inclination sensor is installed on the first jib of the truck crane to collect the inclination R of the boom; the boom horizontal rotation angle sensor is installed at the connection between the main platform and the boom to collect the horizontal rotation angle of the boom relative to the main platform Q, the preset rotation angle Q0 when the boom is at the initial position, in this embodiment, Q0=0. The value range of Q is (-180°, 180°); the jib support force sensor is installed at the support point of the hydraulic cylinder of the truck crane jib to collect the jib support force F.
[0030] The control module collects the above-mentioned jib inclination angle R, jib horizontal rotation angle Q and jib support force F, an...
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The invention discloses a method for measuring and calculating the stable gravity center of an automobile crane in a working state. The method comprises the following steps: 1, calculating the gravitycenter position of an arm support, namely the distance L1 from the gravity center of the arm support to a rotation center; 2, calculating the position of the gravity center G of the whole vehicle. The first step of calculating the gravity center position of the arm support, namely the distance L1 from the gravity center of the arm support to the rotation center, is as follows: G1 being the gravity of the arm support and is known and preset; f being the supporting force of the arm support and being measured by an arm support supporting force sensor; L2 being the distance from the cantilever crane supporting oil cylinder to the longitudinal rotation center of the cantilever crane, and being calculated according to the cantilever crane inclination angle R and the geometric dimension relationbetween the first section of cantilever crane and the supporting oil cylinder. The stability of the automobile can be calculated in real time through the method for measuring and calculating the stable gravity center in the working state of the automobile crane, and a guarantee is provided for safety and stability of the automobile.
Description
technical field [0001] The invention belongs to the field of construction machinery safety protection, and in particular relates to a method for measuring and calculating the stable center of gravity of a truck crane in working state. Background technique [0002] Construction machinery is widely used in various fields of engineering construction. Among them, boom-type construction machinery has the advantages of large working range and flexible operation methods, such as truck cranes, container cranes, truck cranes, telescopic forklifts, etc., are widely used in various construction work site. [0003] With the development of society, the construction safety of construction machinery is becoming more and more important. Therefore, one of the technical development routes of construction machinery is the safety of its operation. Taking the truck crane as an example, there are many factors that affect its safe construction. Among them, the factor that has a greater impact on ...
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Login to View More IPC IPC(8): G01M1/12
CPCG01M1/122
Inventor 韩慧仙陶东波徐达
Owner HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC