Seawater piston motor low in pulsation

A plunger motor and seawater technology, applied in the field of hydraulic components, can solve the problems of plunger motors such as sensitive working parameters, high machining accuracy, and high difficulty, and achieve the effects of reduced parameter sensitivity, improved motion stability, and high overall efficiency

Active Publication Date: 2014-04-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing flow distribution structure is sensitive to the working parameters of the plunger motor, and the machining accuracy is high, which is difficult

Method used

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  • Seawater piston motor low in pulsation
  • Seawater piston motor low in pulsation
  • Seawater piston motor low in pulsation

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Embodiment Construction

[0019] The specific implementation manner will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the seawater plunger motor is composed of a cylinder shaft 1, an end cover 3, a flow plate 6, a return plate 10, a housing 11, a plunger shoe assembly 15, a swash plate 14, and the like. The mechanical seal 2 is installed between the end cover and the cylinder shaft 1 to play the role of end face sealing; the cylinder shaft 1 is composed of the rear sliding bearing 12 installed in the inner hole of the housing 11 and the front sliding bearing installed inside the end cover 3 21 support, an even number of plunger assemblies 15 are inserted into an even number of cylinder holes uniformly distributed on the circumference of the cylinder shaft 1, a floating disc 19 is installed at one end of the cylinder shaft 1, and a floating sleeve 16 is installed inside and passed through the floating sleeve 16. The O-ring 17 and the seal...

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PUM

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Abstract

A seawater piston motor low in pulsation belongs to the technical field of hydraulic application and comprises a swash plate, an even number of piston shoes, a piston, a cylinder shaft, a valve plate, an end cover, a casing, a miniature check valve and the like. Damping holes are formed in an upper stop point and a lower stop point of the valve plate and in the end cover. The miniature check valve is arranged between the damping hole of the lower stop point of the valve plate and the damping hole of the end cover. When a high-pressure piston cavity finishes water sucking, and the upper stop point position is reached, high-pressure water in the piston cavity enters the damping hole of the end cover through a damping hole to flow into the inlet position of the check valve. Then the check valve is opened, and the high-pressure water enters a low-pressure piston cavity through the damping hole at the lower stop point position. The high-pressure piston cavity conducts pre-depressurizing, and the low-pressure piston cavity conducts pre-pressurizing. Under the condition of combining the pressures, a pre-pressurizing and a pre-depressurizing effect of the piston cavity is approximately equal to half of the pressure difference of an axial piston motor high-pressure oil draining kidney-shaped groove and a low-pressure oil sucking kidney-shaped groove, pressure impact at the piston motor transition area is reduced, motor output rotating speed and torque pulse are reduced, and the stability is improved.

Description

Technical field [0001] The invention relates to hydraulic components in the field of water hydraulics, in particular to a low-pulsation seawater plunger motor. Background technique [0002] Water hydraulic transmission technology uses filtered natural water (including seawater and fresh water) as the working medium of hydraulic transmission to achieve power transmission without any additives. It has the unique advantages of wide sources, environmental friendliness, cleanliness and safety, and has become an international fluid transmission technology. And one of the latest development directions in the field of control. [0003] The seawater plunger motor is the executive component of the hydraulic system, and the fluctuation of its output torque and rotational speed directly affects the operation stability of its driving components. The flow distribution structure of the plunger motor directly determines the pressure impact of the plunger cavity, which in turn affects the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/16F04B11/00F04B53/10
Inventor 聂松林杨立洁张锦标赵俊波张安庆
Owner BEIJING UNIV OF TECH
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