Hydraulic motor It can adjust the positive and negative rotation.

Ordinary motors can be divided into two types, for example, the motor has AB2 oil holes.

Type R, inlet oil from port A, rotate clockwise, and port B is the opposite.

L-type, inlet oil from port A, rotate counterclockwise, and vice versa from port B.

The motor is connected in series through the hydraulic oil pipeline, and then connected to the appropriate pipe joint, so that the positive and negative rotation can be completed at the same time.

Hydraulic motor is also called Oil motor It is mainly used in injection molding machinery and equipment manufacturing, ship manufacturing, hoist, engineering machinery and equipment, construction machinery and equipment, mining equipment, mining machinery and equipment, metallurgical equipment, ship accessories, petrochemical equipment, ship machinery, etc.

Generally, all plunger type fast hydraulic motors are axial type.

Axial plunger motor

In addition to valve type flow distribution, other types of axial piston pumps can theoretically be used as hydraulic motors, that is, axial piston pumps and axial piston motors are reversible. The basic working principle of the axial piston motor is that the oil distribution plate and swashplate are fixed, and the motor shaft and the cylinder block are connected and rotate together.

When the working pressure oil enters the plunger hole of the cylinder block through the window of the oil distribution plate, the plunger extends under the action of the working pressure oil and is close to the swashplate. The swashplate causes a normal reaction force p to the plunger, which is decomposed into an axial component force and a vertical component force Q.

Q is in balance with the working pressure of the liquid on the plunger, and Q makes the plunger create a turning distance to the center point of the cylinder block, pushing the motor shaft to rotate counterclockwise. The total torque of the moment caused by the axial piston motor is pulsating.

If the input angle of motor working pressure oil is changed, the motor shaft rotates clockwise. The change of swashplate angle a, that is, the change of fuel consumption, not only directly affects the torque of the motor, but also directly affects its rotation speed and steering. The greater the tilt angle of the swashplate, the greater the torque, and the lower the rotation speed.

Gear motor

In order to better meet the forward and reverse rotation requirements, the gear motor structure type has the same inlet and outlet oil holes, symmetrical holes, and independent oil leakage holes, which lead the leakage oil at the roller bearing out of the housing;

In order to better reduce the running friction torque, roller bearings are used; To better reduce torque pulsation, Gear hydraulic motor The number of teeth of is more than that of the pump. The gear hydraulic motor has poor dry tightness, low capacity efficiency, and the working pressure of oil input cannot be too high, which cannot cause excessive torque.

At the same time, the instantaneous rotation speed and torque change with the change of the position of the cogging point, so the gear hydraulic motor is only suitable for public occasions with fast and small torque. It is commonly used in the manufacturing of construction machinery, agricultural machinery and equipment, and machinery and equipment with low requirements for balance of torque.