High-power hydraulic transmission

Abstract

The invention discloses a high-power hydraulic transmission mechanism, comprising a brake, a reducing mechanism and an output shaft that are connected with a hydraulic motor. The radial plunger hydraulic motor is provided with two groups of coaxial, independent and parallel oil cylinder assemblies, wherein the distance H from the central line of an oil cylinder in right group to the central axial direction of an oil cylinder in the left group is 130-150mm, and the transverse central line of the oil cylinder in the right group intersects with the middle point of the connecting line of two adjacent oil cylinders in the left group. The two groups of oil cylinders are in staggered arranged structure to save the axial size of the mechanism, increase the arrangement number of the oil cylinders exponentially, and improve the output torque in the condition of the same oil pressure and oil cylinder size. The invention is especially suitable for the high-power hydraulic transmission mechanisms and can be used together with large type and heavy-load devices.

Description

technical field [0001] The present invention relates to a hydraulic machine, in particular, the present invention relates to a hydraulic transmission device. Background technique [0002] Construction machinery, mining machinery, petroleum machinery and marine deck machinery have heavy workloads, and the supporting transmission devices must have sufficient torque to meet the operating requirements. The hydraulic transmission has the characteristics of small size, large output torque and easy control, so it can be matched with the above-mentioned machinery. The main component of the hydraulic transmission device is a radial plunger low-speed high-torque hydraulic motor, and it is also equipped with a reducer and a braking mechanism. With the progress of modern industry, large-scale and heavy-duty machinery and equipment appear, and the existing technical products cannot meet the high-power supporting requirements. The structure of the traditional radial plunger low-speed hig...

AI Technical Summary

Problems solved by technology

Under the condition of the same oil pressure and cylinder size, the more the number of cylinders, the greater the output torque, because the number of cylinders is limited by the structure, and the size of the cylinders cannot be infinitely increased, so the output torque is also limited

Of course, the torque output can be effectively increased by increasing the oil pressure, but as the oil pressure increases, the corresponding sealing problems, lubrication problems and safety problems are more difficult to solve

The application of large-sized gear transmission can also achieve high torque output. This solution has obvious disadvantages such as large volume, high energy consumption, many consumables and heavy weight, and is not suitable for large-scale machinery.

There are currently many different structural forms in the research on high-torque hydraulic motors, but there are no effective technical solutions and products for the high-torque hydraulic motors of the radial piston crankshaft linkage mechanism.

Images