CN201152256Y

CN201152256Y - Triangular rotor hydraulic pump

Info

Publication number: CN201152256Y
Application number: CNU2007203113882U
Authority: CN
Inventors: 郭红利; 陆赤音; 史鹏涛
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2007-12-24
Filing date: 2007-12-24
Publication date: 2008-11-19
Anticipated expiration: 2017-12-24

Abstract

A triangular rotor hydraulic pump comprises a stator and a rotor arranged at the inner cavity of the stator. An oil inlet and an oil outlet which are communicated with the inner cavity are arranged on the stator, the oil inlet and the oil outlet are respectively communicated with an oil sucking port and an oil pressing port through an oil-entry trough and an oil-out trough, the inner cavity of the stator presents a 8-shaped trochoid curve surface, the rotor presents an equilateral triangle, and the center of the rotor is provided with an annular gear engaged with a sun gear on a power input shaft. The rotor of the triangular rotor hydraulic pump presents a triangle, the three top angles of the rotor always contact sufficiently with the inner cavity of the stator at any time of rotating, so that the sealing property is favorable, the self-suction capacity is better, the rotation is smooth, and the noise is less. In addition, because the pump can suck and press oil six times when the rotor rotates one lap, the efficiency is higher.

Description

Triangular rotor hydraulic pump

Technical field

The utility model relates to a kind of rotor hydraulic pump, and particularly a kind of rotor shapes is a triangular rotor hydraulic pump.

Background technique

Rotor hydraulic pump is as the device of the source of lubrication of hydraulic energy source that certain flow, pressure can be provided or circulating lubrication in hydraulic system and mechanical transmission.Existing oil hydraulic pump mainly contains gear pump, vane pump and plunger pump.Vane pump belongs to a kind of rotor pump, and it mainly is made up of parts such as rotor, stator, blades.Stator has cylindrical form interior surface, has throw of eccentric between stator and the rotor, and blade is contained in the epitrochanterian groove, can slide flexibly in groove.When rotor turns round, because the effect of centrifugal force and root of blade pressure oil, vane tip is close on the stator inner surface, just form active chamber several sealed, variable volume between per like this two blades, stator, the rotor, utilized the variation of working chamber volume just can finish oil suction and press oily process.Vane pump is because compact structure, and volume is little, and efficient is higher, thus be widely used in various in, in the low-pressure hydraulic system.But the suction capacity of vane pump is poor, and to the greasy dirt sensitivity, thereby has limited its application in some occasion.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of simple and compact for structure, the triangular rotor hydraulic pump that suction capacity is strong.

For achieving the above object, the technical solution adopted in the utility model is: comprise stator and the rotor that is arranged on bore of stator, stator be provided with the filler opening of its intracavity inter-connection and oil outlet,, filler opening 2 and oil outlet are respectively by oil-feed tank with go out oil groove and inlet port and press hydraulic fluid port to be connected, it is characterized in that: the inner chamber of said stator is the surplus pendulum curvilinear plane of the figure of eight, said rotor is equilateral triangle, and also is provided with the ring gear that is meshed with central gear on the power input shaft in centre of rotor.

Three limits of rotor of the present utility model are export-oriented outstanding arc, and are respectively arranged with oil sealing on three limits of rotor; Filler opening and oil outlet respectively by filler opening one-way valve and oil outlet one-way valve with oil-feed tank with go out oil groove and be connected.

Because rotor of the present utility model is a triangle, any time when rotating, its three drift angles and bore of stator remain excellent contact, so encapsulation is good, and suction capacity is strong, stability of rotation, and noise is less.Because rotor whenever circles, oil suction is pressed oil six times, so it has higher efficient.

Description of drawings

Fig. 1 is the first working procedure schematic representation of the present utility model;

Fig. 2 is the second working procedure schematic representation of the present utility model;

Fig. 3 is the 3rd a working procedure schematic representation of the present utility model;

Fig. 4 is the 4th a working procedure schematic representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing structural principle of the present utility model and working principle are described in further detail.

Referring to Fig. 1, the utility model is made of stator 3 and rotor 4, and stator 3 inner chambers are the surplus pendulum curvilinear plane of the figure of eight, and has filler opening 2, filler opening 11, oil outlet 5 and oil outlet 12 in the above.Filler opening 2,11 links to each other with oil-feed tank 16 by filler opening one-

way valve

17,10 respectively, and the inlet port 14 on the oil-feed tank 16 communicates with fuel tank 13.

Oil outlet

5,12 respectively by one-way

valve oil outlet

7,15 with go out oil groove 6 and link to each other, go out oil groove 6 and communicate with pressing hydraulic fluid port 1.Oil-feed tank 16 and to go out oil groove 6 obstructed mutually constitutes independent path separately.Rotor 4 is " equilateral triangle ", and all there is certain outwards outstanding radian on every limit.The ring gear 9 that can be meshed with the central gear 8 on being installed in power input shaft is equipped with in the center of rotor 4.

When the central gear on the input shaft 8 clockwise rotated, the center ring gear 9 of triangular rotor 4 was around input shaft central gear 8 revolution, and triangular rotor 4 itself is again around its center rotation simultaneously.When triangular rotor 4 clockwise rotates, be the ring gear 9 at center and central gear 8 engagements that with the input shaft center center with triangular rotor 4 centers, ring gear 9 is 3: 2 with the ratio of the number of teeth of central gear 8.Above-mentioned kinematic relation makes the movement locus (being the shape of bore of stator) on triangular rotor 4 summits like the figure of eight.Triangular rotor 4 the inner chamber of stator 3 be divided into three independently, sealing, the space of variable volume, three spaces are along with the motion of triangular rotor 4 constantly changes volume, thereby successively finish oil suction separately and press oily process.Triangular rotor 4 is from circling the volume space oil suction of its each limit correspondence, pressure oil twice, the whole oil suction of oil hydraulic pump, pressure oil six times.

For obtain better encapsulation, prolong oil hydraulic pump life-span, raise the efficiency, on three

limits

18,19,20 of triangular rotor 4, load onto oil sealing.

Referring to Fig. 1, when triangular rotor 4 forwarded position shown in Figure 1 to, it is maximum that the volume space of limit 18 correspondences reaches, and oil suction reaches capacity and is about to begin to press oily process.Along with being rotated further clockwise of triangular rotor 4, the volume space of limit 18 correspondences diminishes gradually, and one-way valve 17 is closed, and one-way valve 7 is opened and begun to press oil, and hydraulic oil is flowed out from pressing hydraulic fluid port 1 through going out oil groove 6; Limit 19 corresponding volume spaces become greatly gradually, and one-way valve 10 is opened, and hydraulic oil is inhaled into cavity volume by oil cylinder 13 through inlet port 14, oil-feed tank 16; The volume space of limit 20 correspondences diminishes, and one-way valve 15 is opened, and hydraulic oil is by pressing hydraulic fluid port 1 to discharge.

Referring to Fig. 2, when triangular rotor 4 forwarded Fig. 2 position to, the volume space of limit 18 correspondences changed to minimum, press oil to finish, along with clockwise rotating of rotor, it is big that the volume space of limit 18 correspondences becomes again gradually, one-way valve 7 is closed, and one-way valve 10 is opened, and volume space begins oil suction; The space of limit 19 correspondences diminishes gradually, and one-way valve 15 is opened, and corresponding volume space begins to press oil; It is big that the volume space of limit 20 correspondences becomes, and continues oil suction.

Referring to Fig. 3, when triangular rotor 4 forwarded Fig. 3 position to, the volume space oil suction of limit 18 correspondences was finished, and began to press oil; It is big that the volume space of limit 19 correspondences continues to become, and continues oil suction.The volume space of limit 20 correspondences continues to diminish, and continues to press oil.

Referring to Fig. 4, when triangular rotor 4 forwarded Fig. 4 position to, the volume space of limit 18 correspondences pressed oil to finish, the beginning oil suction; The volume space of limit 19 correspondences continues to diminish, and continues to press oil; It is big that the volume space of limit 18 correspondences continues to become, and continues oil suction.

Three volume spaces of triangular rotor 4 each limit correspondence are along with the continuous variation of clockwise rotating of triangular rotor 4, thereby priority is finished oil suction and pressed oily process separately.Triangular rotor 4 is from circling the volume space oil suction of its each limit correspondence, pressure oil twice, the whole oil suction of oil hydraulic pump, pressure oil six times.

Any time when triangular rotor 4 rotates, its three drift angles and stator 3 inner chambers remain excellent contact, so encapsulation is good, and suction capacity is strong, stability of rotation, and noise is less.Because rotor whenever circles, oil suction is pressed oil six times, so it has higher efficient.

Claims

1, a kind of triangular rotor hydraulic pump, comprise stator (3) and be arranged on the rotor (4) of stator (3) inner chamber, stator (3) is provided with the filler opening (2 with its intracavity inter-connection, 11) and oil outlet (5,12), filler opening (2,11) and oil outlet (5,12) respectively by oil-feed tank (16) with go out oil groove (6) and inlet port (13) and press hydraulic fluid port (1) to be connected, it is characterized in that: the inner chamber of said stator (3) is the surplus pendulum curvilinear plane of the figure of eight, said rotor (4) is equilateral triangle, and also is provided with the ring gear (9) that is meshed with central gear (8) on the power input shaft at the center of rotor (4).

2, triangular rotor hydraulic pump according to claim 1 is characterized in that: three limits (18,19,20) of said rotor (4) are export-oriented outstanding arc, and are respectively arranged with oil sealing on three limits (18,19,20) of rotor (4).

3, triangular rotor hydraulic pump according to claim 1 is characterized in that: said filler opening (2,11) and oil outlet (5,12) respectively by filler opening one-way valve (17,10) and oil outlet one-way valve (7,15) with oil-feed tank (16) with go out oil groove (6) and be connected.