Working principle and function of folding arm crane
Folding arm crane is an instrument used in Earth Science, engineering technology science, basic science, surveying and Mapping Science and technology, mechanical engineering and other fields. 1. Working principle of jib crane The main working power is hydraulic drive. The hydraulic system consists of hydraulic oil tank, oil pump, valve block, hydraulic cylinder, hydraulic motor and hydraulic pipeline. The oil pump obtains power from the automobile engine through the power take-off, takes hydraulic oil as the medium, and controls the flow of hydraulic oil through the valve group, so as to control the telescopic, luffing and rotation of the boom. Crane. The working pressure of the hydraulic system of the jib crane is 28Mpa. All models are commissioned by our commissioning personnel before leaving the factory, and the working pressure of the safety valve is set through the hoisting test. This value is set before leaving the factory. If it is set, the operator shall not change the parameters without authorization! 2. Function of jib crane The working feature of the folding boom crane is to stretch and retract on the load. As we all know, the truck crane has only one luffing cylinder, and the boom is supported and driven by steel wire rope during operation. The goods transported up and down are characterized by long boom and high lifting height. The jib crane has two groups of luffing cylinders. One group of luffing cylinders has the same function as the luffing cylinder of the truck crane, and the other group of luffing cylinders is used to lift goods. Since the telescopic boom is also driven by the oil cylinder, the driving force is large. Even if the lifting load is relatively large, it can push the telescopic boom to expand and contract. Therefore, the folding arm crane has obvious advantages in working in a narrow and low space!