Low gear Hydraulic motor It was used earlier and is called Staffa hydraulic motor overseas. Similar models and specifications in China are JMZ type, with the rated pressure of 16MPa and the maximum pressure of 21MPa. The basic theoretical air displacement is large, which can reach 6.140r/min. The principle of the crank connecting rod hydraulic motor is that the motor consists of a housing, Cycloidal hydraulic motor winch The gear crankshaft piston component, camshaft and oil distribution shaft are composed. Five engine blocks are arranged radially and symmetrically on the inner circle of the shell to produce a star shaped shell; The cylinder body is equipped with a piston. The piston is connected with the crankshaft according to the ball twist. The big end of the crankshaft is made into a saddle cylinder roof pad which is close to the eccentric circle of the crankshaft. It is connected with the axial torque of the crankshaft rotation center. The flow distribution shaft of the hydraulic motor and the crankshaft are connected with each other according to the cross key and rotate with the crankshaft. The pressure oil of the motor passes through the safety channel of the flow distribution shaft, It is distributed to the matching piston oil cylinder by the port shaft. The four and five chambers of the oil cylinder are filled with pressure oil, and the piston is subject to the effect of pressure oil; In other piston cylinders, if there are too many cylinders at one place, cylinders 2 and 3 are connected to the oil drain dialog box; According to the basic principle of the crank connecting rod organization fitness exercise, the plunger pump with the effect of steam pressure will promote the crankshaft to rotate around the rotation center according to the effect of a force N on the core of the eccentric circle, and open the output speed ratio and torque to the outside. If the inlet and outlet ports are interchanged, the hydraulic motor will rotate in the opposite direction. With the rotation axis, the flow distribution axis rotates, and the flow distribution situation changes continuously. Cycloidal hydraulic motor travel During the whole process of crankshaft rotation, the capacity of the oil cylinder located at the vacuum side slowly expands, while the capacity of the oil cylinder located at the low-voltage side slowly decreases. Therefore, during operation, high pressure oil continues to enter the hydraulic motor, and then continues to discharge from the low-voltage chamber.