CN201129268Y

CN201129268Y - Variable oil motor

Info

Publication number: CN201129268Y
Application number: CNU2007201851092U
Authority: CN
Inventors: 李喜阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-24
Filing date: 2007-12-24
Publication date: 2008-10-08
Anticipated expiration: 2017-12-24

Abstract

A variable-displacement oil motor relates to an improvement of an oil motor structure. The utility model provides a variable-displacement oil motor which can change volume constantly along with the change of load, and realize rotation speed and torque which match with the load. The variable-displacement oil motor comprises a body, a rotor gear is arranged outside a spline arranged on a center shaft of the body, and the body is respectively equipped with an oil inlet and outlet port and a back pressure oil port. The structural key point is that a sliding plug with an opening groove at the lateral side is disposed in a tooth space of the rotor gear and the back pressure oil port is connected with a back oil cylinder, a through flow of a flow distribution pressure plate, a ring groove of a flow distribution disc and a flow distribution hole.

Description

A kind of variable-displacement oil motor

Technical field:

The utility model relates to the improvement of oil motor structure.

Background technique:

Present normally used oil motor is a quantitative, can not realize automatic speed change, bending moment with the variation of load; The adjustable oil motor of minority is only arranged, also need artificially to control its rotating speed, torque; But can not continuous tracking adjustment automatically by load variations.

The model utility content:

The utility model is exactly at the problems referred to above, provides a kind of and can continuously change volume with load variations, the rotating speed that realization and load are complementary and the variable-displacement oil motor of torque.

For achieving the above object, the utility model adopts following technological scheme, and the utility model comprises body, and the spline on the central shaft of body is outward an exteranl gear, be provided with oil drain out, back pressure hydraulic fluid port on the body respectively, the sliding plug that the side has opening groove is set in the teeth groove of its structure outline exteranl gear; The back pressure hydraulic fluid port links to each other with teeth groove by the through-flow mouth of back pressure oil cylinder, flow pressing plate, the annular groove and the assignment hole of thrust plate.

The beneficial effects of the utility model:

The utility model is provided with the sliding plug that the side has opening groove in teeth groove, sliding plug can continuously change oil motor of the present utility model with load along the teeth groove can regulate discharge capacity that slidably reciprocates, thereby obtains the torque and the rotating speed that are complementary with load.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the C-C sectional view of Fig. 1;

Fig. 5 is the D-D sectional view of Fig. 1.

Embodiment:

The utility model comprises body 1, is exteranl gear 11 outside the spline 12 on the central shaft 2 of body 1, is provided with oil drain out 13, back pressure hydraulic fluid port 5 on the body 1 respectively, and the sliding plug 14 that the side has opening groove 15 is set in the teeth groove 3 of exteranl gear 11; Back pressure hydraulic fluid port 5 links to each other with teeth groove 3 by the through-flow mouth 4 of back pressure oil cylinder 6, flow pressing plate 7, the annular groove 8 and the assignment hole 10 of thrust plate 9.

Back pressure oil can be compensated by the leakage in the tooth top of exteranl gear 11, sliding plug 14 gaps.

Central shaft 2 is fixed on the body 1 with bearing 17 respectively, is bearing cap 18 outside the bearing 17.

The left end of opening groove 15 is provided with front terminal 16; Can prevent the damage of body 1.

Below in conjunction with a description of drawings course of action of the present utility model:

During use, at first back pressure hydraulic fluid port 5 is linked to each other with body 1 outer accumulator.Back pressure oil through back pressure hydraulic fluid port 5, back pressure oil cylinder 6, flow pressing plate 7 through-flow mouthful 4, the annular groove 8 of thrust plate 9 and assignment hole 10 to teeth groove 3; At this moment, the pressure of the hydraulic oil of accumulator acts on the sliding plug 14, makes sliding plug 14 move to left end; Pressure oil when input arranged advancing oil drain out 13, its axial force promotes sliding plug 14 and slides to the right.Sliding plug 14 is regulated its pressure continuously at back pressure oil and is advanced oil extraction with load and be complementary under the situation, slides along teeth groove 3, advances oil extraction and makes exteranl gear 11 drive central shafts 2 to rotate, be i.e. output mechanical energies.

Claims

1, a kind of variable-displacement oil motor, comprise body (1), spline (12) on the central shaft (2) of body (1) is outer to be exteranl gear (11), be provided with oil drain out (13), back pressure hydraulic fluid port (5) on the body (1) respectively, it is characterized in that in the teeth groove (3) of exteranl gear (11) the sliding plug (14) that the side has opening groove (15) being set; Back pressure hydraulic fluid port (5) links to each other by through-flow mouthful (4) of back pressure oil cylinder (6), flow pressing plate (7), the annular groove (8) and the same teeth groove of assignment hole (10) (3) of thrust plate (9).

2, a kind of variable-displacement oil motor according to claim 1 is characterized in that central shaft (2) is fixed on the body (1) with bearing (17) respectively, and bearing (17) is outer to be bearing cap (18).