Low Speed High Torque Hydraulic Motor: Motion Performance
Crank connecting rod type low speed high torque hydraulic motor is used earlier, which is called Staffa hydraulic motor abroad. JMZ, the same type in China, has the rated pressure of 16MPa, the highest pressure of 21MPa and the maximum theoretical displacement of 6.140r/min.
Low-speed high-torque hydraulic motor is composed of shell, crank - connecting rod - piston assembly, eccentric shaft and oil distribution shaft. Five cylinder bodies are arranged radially along the circumference of the shell, forming a star shell. In a piston cylinder block, piston and connecting rod through ball ground connection, connecting rod big end into a saddle shaped cylindrical surface close to on the eccentric circle of crankshaft, it with the rotary center of eccentric crankshaft torque, the new structure of hydraulic motor shaft and crank shaft by cross key link together, with the crankshaft rotation, flows through the motor pressure oil with axial channel, assigned by the valve shaft to the corresponding piston cylinder, oil cylinder of four or five cavity pressure oil, the role of the piston pressure oil; In the rest of the piston cylinder, the cylinder is in a state of transition, connected with the drainage window is the cylinder two, three; According to the motion principle of the crank connecting rod mechanism, the plunger under the action of oil pressure ACTS a force on the eccentric circle center through continuous driving, pushing the crankshaft to rotate around the center of rotation, output speed and torque, if the inlet and outlet are changed, the hydraulic motor will reverse rotation. With the rotation of the drive shaft and the distribution shaft, the distribution state changes alternately. In the process of crankshaft rotation, the cylinder volume located at the high pressure side gradually increases, while the cylinder volume located at the low pressure side gradually reduces. Therefore, the high pressure oil continuously enters the hydraulic motor when working, and then is continuously discharged by the low pressure chamber.
To sum up, due to match the orientation and transition flow shaft seal between the eccentric direction of crankshaft, and rotate at the same time, so the valve shaft neck of the oil window always on one side of the eccentric line two or three oil cylinder, oil absorption window on the eccentric line on the other side of the rest of the oil cylinder, the total output torque is all torque generated by the piston to the crankshaft center stack, the torque rotary motion to continue
Low-speed hydraulic motor with large torque refers to the hydraulic motor with relatively low rotation speed but large output torque, which is mainly used in injection molding machinery, ships, hoist, engineering machinery, construction machinery, coal mine machinery, mining machinery, metallurgical machinery, Marine machinery, petrochemical industry, port machinery and so on.
As a professional Hydraulic Motor manufacturers in China, it is a powerful enterprise integrating the design, development, processing and sales of hydraulic components. Eternal hydraulic is committed to become the global one-stop market of hydraulic products, with professional hydraulic solutions and quality products, to meet the needs of every customer. The company firmly believes that "only the best can meet the best", become the first choice of hydraulic components for all customers around the world.
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