SU1247579A1 - Water motor - Google Patents

Description

The invention relates to hydraulic engineering, in particular, to axial-piston hydraulic motors with conical gear-precessional torque transducers.

The purpose of the invention is to reduce the diameter of the hydraulic motor.

FIG. 1 schematically shows a hydraulic motor with a piston having parallel end surfaces inclined to the axis; in fig. 2 - hydraulic motor with a piston having an equilateral trapezoidal shape in longitudinal section.

The motor includes a stationary body 1 with channels 2 and 3 for supplying and discharging working fluid, a rotor 4 with a power element in the form of a piston 5 located in the inner bore of the rotor 5 with inclined end surfaces 6 mounted axially and made integral with the shaft 7 connected to the housing 1 by means of a spline connection 8, and two sliders 9 installed in the end walls 10 and 11 of the rotor 4 parallel to the axis of the shaft 7, with the possibility of contact with the corresponding end surfaces 6 of the piston 5. The piston 5, when installed in the bore of the rotor 4, together with the inner surfaces of the rotor 4 and its walls 10 and 11, form two variable volume chambers 12, which are the working chambers of the hydraulic motor, which, when the hydraulic motor is in operation, communicate with the supply and drain lines 2 and 3 with the help of an end distributor fixed in the housing 1 and having working windows 13 and 14.

The hydraulic motor is equipped with a conical gear precessional torque converter, which includes a fixed gear wheel 15 which has a difference in the number of coils and teeth and a drive gear 16 installed with a possibility of contact with it and mounted at an angle to its axis, mounted on an intermediate bearing 17, located on the outer seating surface of the rotor 4, made at an angle to the axis of its rotation, equal to the angle of inclination of the drive gear 16. Link of the drive gear 16 with the output shaft 18 there is

with clutch 19.

compensating gear

The invention provides that the piston 5 may have parallel end surfaces 6 (FIG. 1). In this case, the axes of the sliders 9 are placed one after another on one side of the axis of the shaft 7. Another embodiment of the hydraulic motor provides that the piston 5 in cross section along the axis of the shaft 7 has the shape of an equipolar keystone (Fig. 2). In this case, the axis of the sliders 9 are located in the same plane on both sides of the shaft axis.

The gear ratio of a conical toothed-hardening precessional torque converter is determined by the formula

-sixteen

Zi5- Zi6

where Z15 - the number of pinwheel pinwheel 15; Zi6 - the number of teeth of the driving gear 16.

The motor operates as follows. The working fluid under pressure is supplied depending on the desired direction of rotation of the output shaft 18 into one of the channels 2 or 3 of the housing 1, from where through the working window 13 or 14 of the frontal distributor and the corresponding channels in the rotor 4 enters the working chambers 12, where acts on the mold 5; moreover, if one of the chambers 12 is under the supply pressure, the second chamber 12 is connected to the retraction channel through the distributor. The differential pressure between the working chambers 12 results in axial movement of the piston 5, which is fixed against rotation by means of a spline connection 8. As a result of the contact of the end surfaces 6 of the piston 5 with the sliders 9 of the rotor 4, the latter rotates. The rotation of the rotor 4 communicates, through the intermediate bearing 17, the precessional movement to the driving gear 16, while its gear rim interacts with the flares of the stationary pinwheel 15 and, as a result, interacts the rotational movement transmitted to the output shaft 18 by means of a compensating coupling 19.

The invention makes it possible to reduce the diametrical dimension of a hydromotor by coaxially positioning the output shaft and the rotor piston.

Slid

w

Editor S. Lisin Order 4103/34

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

2

Compiled by V. Chashkin

Tehred I. Veres Corrector A. Znmokosov

Circulation 447Subscribe

Claims (3)

1. A HYDRAULIC motor, comprising a fixed housing with channels for supplying and discharging a working fluid, a rotor with a power element, and a conical gear-pinion precession torque converter, including a fixed pinwheel having a difference in the number of spindles and teeth and installed with the possibility of contact with it and located under at an angle to its axis, a driving gear mounted on an intermediate bearing, the rotor having an outer seating surface for mounting an intermediate bearing of the driving wheel spreader, an internal bore for installing the hydraulic motor power element and end walls, characterized in that, in order to reduce the diametric dimension, the hydraulic motor power element is made in the form of a piston located in the inner bore of the rotor with inclined end surfaces, installed with the possibility of axial movement and made in one integer with a shaft connected to the housing by means of a spline connection, and two sliders installed in the end walls of the rotor parallel to the axis of the shaft with the possibility of contact and with the corresponding end surfaces of the piston. 2. The hydraulic motor according to π. 1, characterized in that the piston has parallel end surfaces interconnected and polzu- _s us arranged coaxially on one side of the shaft axis §. 3. The hydraulic motor according to π. 1, characterized in that the piston in cross section along the axis of the shaft has the shape of an isosceles trapezoid, and the axis of the sliders are placed in the same plane on both sides of the axis of the shaft. SU „, 1247579 FIG. 1