The working principle of the hydraulic pump of the hatch cover mainly depends on the working principle of the hydraulic system. Hydraulic systems take advantage of the incompressibility of a liquid ( usually oil) to transfer force. hydraulic pump is the core part of the hydraulic system, its function is to convert the mechanical energy of the motor into the pressure energy of the liquid.
Rexroth Serial NO:60649443; Pump capacity:2x49 I/min; Nominal working pressure: 280 bar
The working principle of the hydraulic pump of the hatch cover mainly depends on the working principle of the hydraulic system. Hydraulic systems take advantage of the incompressibility of a liquid ( usually oil) to transfer force. hydraulic pump is the core part of the hydraulic system, its function is to convert the mechanical energy of the motor into the pressure energy of the liquid.
Specifically, the working principle of hydraulic pump includes the following steps: Suction liquid: hydraulic pump has one or more pistons, when the piston moves down, pump suction inlet is opened, liquid is sucked into the pump.
Compressed liquid: when the piston moves upward, inlet is closed, outlet is opened, liquid is compressed and pushed into the high pressure area of the hydraulic system.
Transfer force: By changing the pressure of the liquid hydraulic pump can convert the rotating motion of the motor into a linear thrust this thrust can be used to drive the opening and closing of the hatch cover. In the application of hatchcover, hydraulic pump delivers high pressure liquid to the hydraulic cylinder or piston of hatchcover through pipelines, by controlling the flow rate and pressure of the liquid, can accurately control the opening and closing speed of the hatchcover, and maintain the stability of the hatchcover in a specific position.
In general, the working principle of hatchcover hydraulic pump is to move up and down in the pump by motor driven piston, suction and discharge of liquid, the use of liquid incompressibility to transfer force and control speed, finally realize the opening and closing of the hatchcover.
Hydraulic transmission is widely used in various fields, known as "industrial muscle", and in hydraulic transmission hydraulic pump is a power component, is the "source" of its power, especially into the era of mechanization, everywhere has its figure, the importance is self-evident. A complete hydraulic system consists of five parts, namely power components, executive components, control components, auxiliary components and hydraulic oil.
The role of the actuator (hydraulic cylinder and hydraulic motor) is to convert the pressure energy of the liquid into mechanical energy, and drive the machine to make linear reciprocating movement or rotary movement.
Control elements (various hydraulic valves) control and regulate the pressure, flow and direction of liquids in the hydraulic system.
Auxiliary components include oil tank, oil filter, sealing ring, pressure gauge, etc. Hydraulic oil is the medium of energy transfer in the hydraulic system, mineral oil, synthetic hydraulic oil and so on.
The function of the hydraulic pump is to convert the mechanical energy of the power machine (such as electric motors and internal combustion engines, etc.) into the pressure energy of the liquid. The output flow can be adjusted according to the needs of the variable pump, the flow can not be adjusted called quantitative pump. Although the structure of different types of hydraulic pumps is very different, there are many common points in installation, use and maintenance, which may lead to failure if the operation is not standardized.
Commonly Used Hydraulic Pump Types 1. According to whether the flow can be adjusted can be divided into: variable pump and quantitative pump. The output flow can be adjusted according to the needs of the variable pump, the flow can not be adjusted called quantitative pump. 2. According to the pump structure commonly used in the hydraulic system is divided into: gear pump, vane pump and plunger pump 3 kinds.
Working Principle of Hydraulic Pump 1. Gear pump Gear pump has the characteristics of small size, simple structure, strong anti-pollution, cheap price, large leakage, large noise, large flow pulsation, and displacement can not be adjusted. Gear pump is composed of two gears meshing with each other, when the motor or engine drives one of the gears, the other gear meshing with it will rotate at the same time. The pair of gears rotate with each other, the gear teeth gradually break off on one side of the meshing teeth, and the volume of the sealing cavity increases, forming a local vacuum. The hydraulic oil in the oil tank is sucked in to fill the increasing volume under the action of atmospheric pressure. The sucked hydraulic oil fills the tooth groove, and with the tooth groove rotating, the oil is brought to the pressure oil chamber on the other side of the meshing zone. The two gear meshing lines separate the oil suction chamber and the oil pressure chamber, so that there is no hydraulic oil leakage between the oil suction area and the oil pressure area, and the gear constantly rotates to complete the oil suction and oil pressure process.
2. Blade pump Vane pump has the characteristics of uniform flow, smooth operation, low noise, high working pressure and volumetric efficiency, and complex structure. Vane pump is formed by the rotor and the blade to form an eccentric structure, with the rotor in the drive shaft rotation, the lower end of the blade due to the role of spring or hydraulic oil, always maintain enough pressure, so that the blade tip can be close to the inner wall of the pump, in the rotation process, any two adjacent blades and the pump body enclosed into a closed space, closed space gradually becomes larger, The hydraulic oil is sucked into the inside, and when the volume of the confined space changes from large to small, the hydraulic oil inside is pressed out from the hydraulic zone. 3. Plunger pump The plunger pump has high volume efficiency, small leakage, can work under high pressure, mostly used in high-power hydraulic systems, but the structure is complex, the material and processing accuracy requirements are high, the price is expensive, and the cleanliness of the oil is required.
The plunger pump has a drive shaft, connected with the cylinder, the plunger evenly distributed in the cylinder along the circumference, one end of the plunger is pressed on the fixed swash plate, the other end is equipped with a compression spring between the bottom surface of the pump body, the swash plate relative to the axis of the pump body has an inclination, the piston will always be pressed on the tilting plate. When the plunger pump works, under the action of the CAM on the camshaft of the injection pump and the plunger spring, the plunger is forced to make up and down reciprocating motion, so as to complete the oil pumping task. The oil pumping process can be divided into two stages: the oil inlet process and the oil return process. The piston on one side of the cylinder block and the sealing volume around the cylinder block gradually increase into the oil absorption area, and the other side gradually decreases into the oil pressure area due to the sealing volume around the cylinder block.
4. Gas booster pump The pneumatic booster pump is mainly driven by low pressure gas at large area piston end to produce high pressure fluid at small area piston end. It can be used to compress air and other gases, and the output pressure can be stepless adjusted by driving pressure. A variety of gas drives: compressed air, liquefied nitrogen and pipeline nitrogen, water vapor.
