Full water lubrication pass shaft type water hydraulic piston motor

Abstract

The invention provides a full water lubrication pass shaft type water hydraulic piston motor and belongs to the field of fluid machinery. A cylinder body shaft is provided with an odd number of large holes and small holes parallel to an axis, and pistons in a piston shoe component are respectively arranged in the large holes so as to form piston pairs; one end of the cylinder body shaft is provided with a float disc, one ends, uniformly arranged in the cylinder body shaft, of central springs are used for pressing the float disc on a fluid distribution disc, and the other ends of the central springs are used for pressing an ejector rod on a central spherical hinge assembled on the cylinder shaft; and a retainer plate sheathed outside the central spherical hinge is used for pressing the piston shoes in each piston component on the inclined surface of an inclined disc through the bottom of the piston shoes, one end of a float sleeve is installed into a cylinder hole corresponding to the cylinder body shaft, and the other end of the float sleeve is installed into the hole corresponding to the float disc. The full water lubrication pass shaft type water hydraulic piston motor adopts the cylinder body shaft, so that the side play of a spline or a flat key is prevented from causing the fluid distribution disc to flee circumferentially, and the contact part between a transmission key and the shaft is avoided from high stress corrosion; and all the odd number of pistons adopt return springs for centralization return, so that fatigue breakdown merely exists, and the motor is beneficial to working in sea water for a long time.

Description

Technical field [0001] The invention relates to an energy conversion device and an actuator hydraulic motor in water hydraulic transmission, and belongs to the field of fluid machinery. Background technique [0002] With the progress of society and the development of science and technology, saving energy and resources, eco-friendly green manufacturing technology has become the primary goal of modern mechanical engineering. Water hydraulic transmission technology uses filtered natural water (including seawater and fresh water) as the working medium of hydraulic transmission to realize power transmission without any additives. It has the unique advantages of wide source, environment-friendly, clean and safe, and the water itself has resistance Combustibility and other advantages can satisfy people's desire for safety, economy and environmental protection to the greatest extent, and meet the needs of sustainable development of human beings. It has become one of the latest devel...

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Problems solved by technology

Chinese patent (patent number: ZL03118632.7) discloses an axial plunger type water hydraulic pump, which adopts a full water lubricating valve flow distribution structure, the main shaft drives the swash plate to rotate, while the cylinder body is stationary, and the structure is relatively complicated. Difficult to process

Chinese patent (Application No.: 200310108538.6) discloses a pure water hydraulic axial plunger pump / motor with full water lubrication. The body is an interference fit with a floating end surface distribution structure of a floating thrust plate, which has a compact structure, high specific power, and difficult processing, but the actual effect has not been reported.

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