QJM hydraulic motor Scope of application:

QJM type Hydraulic motor It can be combined with various hydraulic oil pumps, valves and hydraulic accessories Hydraulic transmission device In view of various countermeasures adopted in its design, it can be applied to the working conditions of various equipment. This type of motor has a series of advantages, such as light weight, small size, large range of speed change, grade variable, self opening and closing of mechanical equipment brake, good low-speed stability, reliable operation, shock resistance, high efficiency, long service life, etc. At present, it has been widely used in mine engineering construction, lifting and transportation, heavy metallurgical industry, crude oil, coal mining, ships CNC machine tools, light industry injection molding processing, geological exploration and other institutions. It can directly push crawler walking, track wheel driving, various slewing hoisting mechanisms, survey drilling, belt transportation, material mixing, ground cutting, ship propulsion, plastic pre molding and other mechanisms.

Main features of QJM hydraulic motor:

1. The rolling element of this type of motor is replaced by a steel ball Inner curve hydraulic motor More than 2 rollers and bearing beams are used, so the structure is simple, the operation is reliable, and the volume and net weight are significantly reduced.

2. The motion pair inertia is small, and the steel ball is solid and reliable, so this type of motor can operate continuously at high speed and impact load.

3. The friction pair is small, the internal force of the oil distribution shaft and rotor is balanced, the ball plug pair passes the force through the ball pad made of self-lubricating composite materials, and has the standard of static pressure balance and excellent lubrication. The soft plastic piston ring seal high pressure oil that can self compensate the damage is adopted, so it has high mechanical equipment and volume working efficiency, can operate stably at very low speed, and has a large starting torque.

4. Due to the characteristics of the structure, the return oil back pressure required by the motor is low, generally 0.3~0.8Mpa. The higher the speed, the greater the back pressure.

5. Because the oil distribution shaft is rigidly connected with the stator, the oil pipe of this type of motor is allowed to be connected with steel pipe.

6. This type of motor has two-stage and three-stage variable displacement, so it has a large range of speed changes.

7. The structure is simple and easy to disassemble. There is no special requirement for oil cleanliness. The oil screening accuracy can be selected according to the standard of matching hydraulic oil pump.

8. Except for the shell type and the supported type, the outlet shaft I of the hydraulic motor usually only allows to bear the torque, and cannot bear the radial and axial forces.

9. With a "T" type hydraulic motor, the center has a through hole, and the transmission shaft can cross the hydraulic motor.

10. The hydraulic motor with "S" type can automatically open and close the mechanical equipment brake to achieve reliable braking.

11. With "Se" and "SeZ" hydraulic motors, the starting and braking can be controlled manually or automatically, with low control pressure, large braking torque, convenient and reliable use.

12. The speedometer can be assembled behind the "B" type hydraulic motor to show the speed of the hydraulic motor.

2.2 Structure and working principle of QJM axial hydraulic motor

1、 Internal structure of QJM shaft rotation motor:

QJM series internal curve multi action radial Steel ball hydraulic motor The key part of the basic structure is composed of steel ball, cylinder block with output shaft, guide rail, port shaft, plunger, rear cover, front end cover, retaining ring for hole, oil sealing cap, locating pin and other parts.