Views: 7 Author: Site Editor Publish Time: 2020-10-19 Origin: Site
Industrial hydraulic technology is a technology summarized and created in long-term production practice and scientific experiments. For nearly half a century, due to its large transmission power, it is conducive to transmission and configuration. Hydraulic technology has been widely used in various industries of industry and agriculture to improve labor productivity, reduce labor intensity and automate production processes.
Hydraulic transmission is a type of fluid transmission. Based on the most basic Pascal principle, it refers to a transmission method that uses pressured oil as a working medium to achieve energy conversion and power transmission in a closed container. The liquid in it is called working medium and it is generally mineral oil. Its function is like that of transmission elements such as belts, chains and gears in mechanical transmission.
A complete hydraulic system consists of the following five parts, namely power components, actuators, control components, auxiliary components and hydraulic oil.
1) The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. It refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system, thereby driving the movement of the actuator. According to its structure, hydraulic pumps can be divided into gear pumps, vane pumps, plunger pumps and screw pumps;
2) The function of the actuator is to convert the pressure energy of the liquid into linear reciprocating motion of the working device, that is, swinging or rotating mechanical energy, such as hydraulic cylinders and hydraulic motors.
3) The main function of the control element is to control the movement speed and direction of the actuator to adjust the pressure, flow and direction of the liquid to ensure that the working mechanism completes the predetermined working movement, such as an overflow valve, a check valve and an electromagnetic reversing valve.
4) Auxiliary components mainly play an auxiliary role, including oil tank, oil filter, pipe joints, seals, pressure gauges, oil level oil thermometers, oil pipe seals which function as oil storage, filtering, loosening, leak-proofing, etc. To ensure the normal operation of the system and facilitate the detection and control, it is an essential part of the hydraulic system.
5) The working medium is a liquid that transmits power and energy in the above four components, and is the most essential part of the hydraulic system. It includes various mineral oils, emulsions, water-based media, and synthetic hydraulic oil. class.
(1) Small size and light weight, so the inertial force is small, and no large impact will occur when it is suddenly overloaded or stopped;
(2) It can smoothly and automatically adjust the traction speed within a given range, and can realize stepless speed regulation;
(3) Easy commutation, without changing the rotation direction of the motor, it is more convenient to realize the conversion of the working mechanism rotation and linear reciprocating motion;
(4) The hydraulic pump and the hydraulic motor are connected by oil pipes and there is no strict restriction on the spatial arrangement of each other;
(5) Because the oil is used as the working medium, the components can be self-lubricated between the relatively moving surfaces, with low wear and long service life;
(6) Simple operation control and high degree of automation;
(7) Easy to achieve overload protection. Hydraulic technology can be widely used, mainly because it can realize smooth transmission, light weight, small size, large load capacity, easy to achieve stepless speed regulation, complex movements, and easy mechanical structure, which is beneficial Automate your organization.