Orbital hydraulic motor types there are many, for some types, you may not know much, Today, I have summarized some basic types of motors according to the products of Hanjiu Technology Company, for your reference.
We divide according to the structural type of hydraulic motor, which can be divided into gear type, vane type, plunger type.
Gear motor: In order to adapt to the forward and reverse requirements in the structure, the inlet and outlet of the gear motor is equal and symmetrical, and there is a separate oil leakage port, which can lead the oil leakage of the bearing part out of the shell. In order to reduce the starting friction moment of the motor, rolling bearings are used; The gear hydraulic motor has more teeth than the pump, also to reduce torque pulsation. However, due to poor sealing, low tolerance efficiency, input oil pressure can not be too high, can not produce a large torque, instantaneous speed and torque changes with the position of the mesh point and other reasons, only suitable for high-speed small torque occasions. Therefore, gear motors are generally used in construction machinery, agricultural machinery and mechanical equipment with low requirements for torque uniformity.
Vane motor: Due to the pressure oil action, the force imbalance causes the rotor to generate torque. The output torque of the vane hydraulic motor is related to the pressure difference between the displacement of the hydraulic motor and the inlet and outlet of the hydraulic motor, and its speed is determined by the flow size of the input hydraulic motor. Since hydraulic motors generally require forward and reverse, the blades of vane hydraulic motors should be placed radially. In order to make the root of the blade always have pressure oil, in the back pressure oil cavity into the root of the blade path needs to be set up a check valve, in order to ensure that the blade type hydraulic motor in the pressure oil after the normal start, must make the blade top and the stator inner surface close contact to ensure good sealing, so the blade root should be set up preload spring. Vane hydraulic motor is small in size, small in moment of inertia, sensitive in action, and can be applied to occasions with high commutation frequency; However, the leakage volume is large and unstable when working at low speed. Therefore, vane hydraulic motors are generally used for occasions with high speed, small torque and sensitive action requirements.
Radial piston motor: It is divided into single-acting connecting rod type radial piston motor, multi-acting internal curve piston motor, plunger type high-speed hydraulic motor (due to the length of the reason, I will not introduce it in detail here). Their common working principle is that when the pressure oil enters the bottom of the plunger in the cylinder body through the window of the fixed oil distribution shaft, the plunger extends outward and tightly holds against the inner wall of the stator, due to the eccentric distance between the stator and the cylinder body.At the contact between the plunger and the stator, the reaction force of the stator on the plunger can be decomposed into two divided forces. When the oil pressure acting on the bottom of the plunger is p, the diameter of the plunger is d, and the angle between the force and the angle between the force and the cylinder is X, the force generates a torque on the cylinder block, which rotates the cylinder block, and the cylinder block then outputs torque and speed outward through the drive shaft connected to the end face.
Axial piston motor: In addition to the valve type distribution, other forms of axial piston pump can be used as hydraulic motors in principle, that is, axial piston pumps and axial piston motors are reversible. The working principle of the axial piston motor is that the oil distribution plate and the swashplate are fixed, and the motor shaft is connected to the cylinder block and rotates together. When the pressure oil enters the plunger hole of the cylinder block through the window of the oil distribution plate, the plunger extends outward under the action of the pressure oil, close to the swashplate, and the swashplate produces a normal reaction p on the plunger, which can be decomposed into axial and vertical forces Q. Q is balanced with the liquid pressure on the plunger, while Q causes the plunger to generate a torque against the center of the cylinder block, driving the motor shaft to rotate counterclockwise. The instantaneous total torque generated by the axial piston motor is pulsating. If the motor pressure oil input direction is changed, the motor shaft rotates clockwise. The change in the inclination angle of the swashplate a, that is, the change in displacement, affects not only the torque of the motor, but also its speed and steering. The greater the inclination angle of the swashplate, the greater the torque generated and the lower the speed.
No matter which type of hydraulic motor is mentioned above, Hanjiu Technology Company has sold it, and they have also innovated some motors according to some principles, making the use of motors more humane and diversified. Not only that, because of the high manufacturing cost of high-quality motors, the motor prices of many manufacturers are very high, but Hanjiu Technology Company has always adhered to the purpose of striving for the greatest discount for customers and minimizing its own profits.If you still want to know more about the detailed consultation on motor knowledge, please click the link https://www.hjhydraulic.com/ view, if you want to buy a motor, Looking for Hanjiu Technology Company, it is worth saying that I guarantee that their service attitude will bring you a warm feeling！
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