A plunger type hydraulic motor pump with an internal integrated front pump

A hydraulic motor, internal integrated technology, used in liquid variable capacity machinery, liquid fuel engines, pumps, etc., can solve problems such as the inability of heat dissipation capacity to meet the requirements of use, single working medium, etc., achieve low vibration and noise, and improve the suction cavity. pressure, the effect of increasing the inlet pressure

CN103967802BActive Publication Date: 2016-06-29HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-06-29

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Abstract

The invention discloses a plunger type hydraulic motor pump internally integrated with a front-mounted pump. The plunger type hydraulic motor pump comprises a motor rotor, a cylinder body, a plurality of plungers, a swash plate assembly, a distribution valve assembly, a front-mounted pump assembly, bearings and a thrust plate, wherein the two ends of the cylinder body are provided with stepped shafts, the end of each stepped shaft is provided with a water discharging end, a water discharging through hole designed inside each stepped shaft is communicated with a water outlet formed in the corresponding water discharging end, and the two stepped shafts are embedded in the bearings which are distributed symmetrically; the stepped shaft at one end is provided with the thrust plate, and the thrust plate is embedded in a bearing block and the corresponding water discharging end; the front-mounted pump assembly is integrally installed inside a water feeding runner inside one end of the cylinder body, the front-mounted pump assembly is communicated with a plunger cavity through a distribution valve, and working media are discharged out from the two water discharging ends after being pressurized in the plunger cavity. According to the plunger type hydraulic motor pump internally integrated with the front-mounted pump, the heat dissipation performance is excellent, high-speed rotation is achieved, no cavitation is generated, vibration and noise are low, and the working media can be water or oil.
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Description

technical field

[0001] The invention relates to a motor pump, in particular to an axial plunger hydraulic motor pump with an internal integrated front pump, which solves the problems of insufficient suction performance, heat dissipation performance and single working medium of the motor pump. Background technique

[0002] The plunger hydraulic motor pump is a new type of hydraulic power component, which integrates the two independent components of the drive motor and the axial piston pump structurally. Compared with the traditional power component, it has a small size and a It has the advantages of compactness, high power density and no external leakage.

[0003] Solving the problems of heat dissipation inside the motor pump, cavitation and vibration when the motor pump rotates at a high speed, and a single working medium are the research directions of technicians in the field of plunger hydraulic motor pumps. The Chinese patent application number 200710305961.3 discloses a...

Examples

Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0043] figure 1 , 2It is a front view and a left view of a plunger type hydraulic motor pump integrated with a front pump according to an embodiment of the present invention, respectively. The motor stator 16 is installed in the housing 18, the motor rotor 15 is installed in the motor stator 16, and the cylinder body 28 is connected to the motor rotor 15 by using a key. The two ends of the cylinder body 28 have st...