Radial plunger hydraulic motor The basic working principle is that when the pressure oil enters the bottom end of the plunger in the cylinder block through the channel of the specific oil distribution shaft 4, the plunger protrudes outward, firmly against the inside of the motor rotor. Considering that the motor rotor has an eccentricity with the cylinder barrel. At the point where the plunger contacts the motor rotor, the recoil force of the motor rotor against the plunger is. The force is decomposed into two molecular forces. When the hydraulic oil pressure acting on the bottom end of the plunger is p, the outer diameter of the plunger is d, and the diagonal between the force and is X, the force will cause a torque to the cylinder barrel to rotate. The cylinder barrel can then use the transmission shaft connected with the milling surface to work outward to output the torque and rotation speed.

The above analysis shows that one plunger causes the torque. Considering that there are many plungers in the oil pressure area, the torque caused on such plungers makes the cylinder barrel rotate and work to output the torque. Radial plunger hydraulic motor Multi applicable to low speed and large

Under the condition of torque.

1. Single acting connecting rod type radial piston motor

As shown in Figure 4-6, connecting rod motor diagram, shaft flow distribution Hydraulic motor Figure, installation video of pentagonal radial motor shows the operation structure diagram of single acting connecting rod radial piston motor, and its shape is pentagonal. The motor is composed of housing 1, cylinder barrel 6, port shaft 5, connecting rod 3, plunger 2, eccentric wheel 4 and other parts.

Advantages: simple structure and reliable operation.

Defects: large volume, large total weight, torque pulsation, poor stability at low speed.

2. Multiple functions Internal curve plunger motor

The motor is composed of port shaft 1, cylinder barrel 2, plunger 3, cross beam 4, roller 5, motor rotor 6, work output shaft 7, etc. The displacement of this type of motor is twice that of single stroke motor. It is equivalent to having twenty-one plungers. Considering that the number of equivalent plungers increases, under the same pressure, the working output torque correspondingly increases, and the torque pulsation rate decreases. Sometimes this type of motor is made up of multiple rows of plunger plugs. The more plungers there are, the more working output torque will increase and the more torque pulsation rate will decrease. Therefore, this type of motor can achieve a very large displacement, and can operate stably at a very low rotational speed. Considering that the motor must rotate on both sides, the blade slots are arranged radially.

3. Plunger type High speed hydraulic motor

The plunger type high-speed hydraulic motor is usually axial type.