Oil distribution axle linkage rod type hydraulic motor

Abstract

A shaft-distribution-oil link-type oil hydraulic motor is improved on the basis of the original shell, the shaft-distribution-oil configuration, the rotating shaft, and the plunger piston-link assembly, etc., namely that the shaft-distribution-oil configuration consists of an oil-through disk and an oil distribution jacket. No.1 and No.2 hydraulic fluid ports are opened on the oil-through disk, and No.1 and No.2 ring grooves are opened on one of the interfaces of the oil-through disk and the oil distribution jacket to airproof and form No.1 and No.2 oil reservoirs; at the same time, No.1 and No.2 under cut slots which are separated by the contact crown faces are symmetrically opened on the same ring face of the inner wall of the oil-through jacket. The No.1 and No.2 under cut slots are arranged between the No.1 and No.2 oil reservoirs to airproof and form the No.1 and No.2 main oil reservoirs. A plurality of flow passages corresponding to the main oil reservoirs and connected with the plunger piston are arranged on the rotating shaft. The adopted structure forms the oil-through configuration and the oil distribution configuration into adjacency configurations, approximately distributing in the same orientation to greatly decrease the axial size of the oil distributor, and make the structure of the oil hydraulic motor closer and more reasonable.

Description

technical field [0001] The invention relates to a hydraulic motor, in particular to a shaft oil connecting rod hydraulic motor. Background technique [0002] A radial crankshaft connecting rod hydraulic motor with hydrostatically balanced sliding bearings includes a housing consisting of a cover and housing, an oil distributor with multiple oil distribution holes, a plunger cylinder, a plunger-connecting rod assembly and a crankshaft, Among them, the oil distributor is divided into a flat oil distribution structure and a shaft oil distribution structure. For example, edited by Lei Tianjue, the first volume of "Newly Edited Hydraulic Engineering Handbook" published by Beijing Institute of Technology Press in December 1998, on pages 505 to 507 and Figure 12.4-3, a crankshaft coupling with a shaft oil distribution structure is disclosed. Rod type hydraulic motor, the crankshaft of the hydraulic motor is supported in the shell and cover through bearings, one end of the cranksha...

AI Technical Summary

Problems solved by technology

But adopt this structure of rolling friction, although can preferably overcome the drawback of the radial crankshaft connecting rod type hydraulic motor that adopts hydrostatic balance sliding bearing, can also bring following problem thereupon: Due to crankshaft, bearing sleeve and The roller is located in the center of the hydraulic motor, and the plunger and connecting rod are distributed on the circumference of the crankshaft, which prevents the radial size of the rolling bearing unit from being arbitrarily increased, and can only be limited within a certain range, thus limiting the bearing capacity of the rolling bearing. unit load capacity

But just like this, the load that the rolling bearing unit can bear still cannot meet the high-pressure work needs of some users

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