Hydraulic engine plunger pump

A hydraulic motor and plunger pump technology, applied in the field of axial plunger pumps, can solve the problems of high noise and external leakage of the hydraulic power unit, and achieve the effects of reliable sealing, convenient cooling and compact structure

Inactive Publication Date: 2007-03-14
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the electric motor connected to the plunger pump generally has a fan for cooling, so the noise of the whole hydraulic power unit is also very large; at the same time, because the plunger pump has an overhanging shaft, there is a way of external leakage

Method used

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  • Hydraulic engine plunger pump
  • Hydraulic engine plunger pump

Examples

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Embodiment Construction

[0009] As shown in Figure 1 and Figure 2, a motor stator 8 is installed in the pump casing (5), a motor winding 7 is housed in the motor stator 8, a motor rotor 20 is arranged inside the motor stator 8, and rotor guides are evenly distributed in the motor rotor 20. Bar 10 has an end ring 9 on both sides of its end face, and a cylinder body 12 is installed in the inner hole of the motor rotor 20, and the cylinder body 12 is supported on the left pump cover 1 through the first bearing (2) and the second bearing (17). 1. Between the right pump cover 18, the right pump cover 18 is provided with an oil inlet 18a, the left pump cover 1 is provided with an oil outlet 1a, and the inner surface of the pump casing 5 is evenly distributed with a plurality of axial grooves 5a, A junction box 6 is set on the pump casing 5, a flow distribution plate 11 is arranged between the left pump cover 1 and the end faces of the cylinder body 12, and a plurality of plungers 13 are evenly distributed in...

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Abstract

The invention discloses a hydraulic-motor piston pump with the purpose that electric energy is transmitted to hydraulic energy directly by machine winding directly driving cylinder body connected integrally with motor rotor. Motor stator 8, in which machine winding 7 and motor rotor 20 are set, is set in pump shell 5, rotor bar 10 is uniformly set in motor 20, on the two sides of motor rotor end face there are two end ring 9, the cylinder body 12 is set in the inner hole of motor rotor 20, inlet 18a is opened on right pump cap 18, outlet 1a is opened on left pump cap 1, multiple pistons 13 is uniformly set in pump shell 5, the piston 13 is tightly contacted with the bevel 18b of right pump shell 18 by slipper 15, return disc 14, ball hinge 16 and retracting spring 19.

Description

technical field [0001] The present invention relates to axial piston pumps, and more particularly to hydraulic motor piston pumps. Background technique [0002] Axial piston pump is a high-pressure pump type of hydraulic pump, which has the advantages of reliable sealing and high volumetric efficiency, so it has been widely used. At present, the plunger pump, as an independent hydraulic power unit, needs to connect its outstretched pump shaft with an independent electric motor or internal combustion engine to form a motor-hydraulic pump unit to form a hydraulic power unit to work. This connection requires a coupling, a pump frame And other devices, due to the large size of the independent motor, plus accessories such as couplings, the volume and weight of the entire hydraulic power unit is very large. In addition, the electric motor connected with the plunger pump generally includes a fan for cooling, so the noise of the whole hydraulic power unit is also very large; at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/03F04B1/22
Inventor 冀宏胡启辉王峥嵘张玮魏列江
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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