液压优缺点（Hydraulic advantages and disadvantages）.doc

液压优缺点（Hydraulic advantages and disadvantages） : (1) advantages 1) the transmission is steady in the hydraulic transmission. As the compression of the oil is very small, it can be considered as incompressible under normal pressure, and it depends on the continuous flow of the oil. There is oil The utility model can also be provided with a hydraulic buffer device in the oil circuit, so that unlike the mechanical mechanism, because of the processing and assembling errors, the vibration and buckling impact can be caused, and the transmission is very stable, and the utility model is easy to realize frequently Reversing; therefore, it is widely used in machines requiring a smooth transmission; for example, almost all of the grinding machines adopt hydraulic transmission. 2) light weight, small size, hydraulic transmission and mechanical, electrical and other transmission methods, in the same output power conditions, the volume and quality can be reduced a lot, so the inertia of small, action Ling This is especially important for hydraulic profiling, hydraulic automatic control, and machines that require quality reduction. For example, the 1m3 excavator produced in our country adopts hydraulic transmission, which is better than the adopted machine The quality of the mechanical transmission is reduced by 1t. 3) carrying capacity is large, hydraulic transmission is easy to obtain great force and torque, so it is widely used in pressing machine, tunnel boring machine, 10000 ton ship steering gear and 10000 ton water press, etc.. 4) easy to realize stepless speed regulation, in hydraulic transmission, adjust the flow of liquid can be achieved stepless speed, and the speed range is very large, up to 2000:1, it is easy to obtain very low speed Degree. 5) it is easy to realize overload protection, and a lot of safety measures are adopted in the hydraulic system, which can prevent overload automatically and avoid accidents. 6) hydraulic components can be automatically lubricated,