SU1657747A1 - Planetary cycloid hydraulic motor - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used in orbital hydraulic motors of lifting and construction and assembly machines. In order to increase the reliability of operation, a hydraulic motor comprising a housing 1 with pressure 2 and drain 3 channels and an end cover 4, a stator 6 with an internal toothed surface coaxially mounted in its cylindrical cavity, and a rotor 8 with an external toothed surface and through holes 10, eccentrically mounted in a stator 6 on the shaft 11 to form working chambers 12, a distribution disk 13 with windows 14 and a spool 15 with bypass channels 16. In this case, the discharge 2 and drain 3 channels are communicated through the bypass channels 16 and windows 14 with working chambers 12. The rotor 8 is kinematically connected to the shaft 11 by means of a disk 17 with rings 18 placed in

Description

The invention relates to hydraulic engineering and can be used in orbital hydraulic motors of lifting and construction and assembly machines.

The purpose of the invention is to increase the reliability of the motor by ensuring the stability of the gear ratio.

FIG. 1 shows the hydraulic motor, axial section; in fig. 2 shows section A-A in FIG. one.

The planetary cycloidal hydraulic motor includes a housing 1 with inlet 2 and exhaust 3 channels and an end cover 4, a stator b coaxially mounted in its cylindrical cavity 5 with an internal toothed surface 7 and a rotor 8 with an external toothed surface 9 and through holes 10, eccentrically mounted in the stator 6 on the shaft 11 with the formation of the working chambers 12, the distribution disk 13 with the windows 14 and the spool 15 with the bypass channels 16. In this case, the inlet 2 and the exhaust channels are communicated through the bypass channels 16 and the windows 14 with working The rotors 8 are kinematically connected to the shaft 11 by means of a disk 17 with fingers 18 placed in the side openings 10 of the rotor 8. The hydraulic motor is equipped with cylindrical sleeves 19 freely mounted in the through holes 10 of the rotor 8 on the fingers 18 with the formation of internal 20 and external 21 cavities communicated with the inlet channels 2. The inner surface 7 of the stator 6 is made in the form of an eccentric shortened hypocycloid, and the outer surface 9 of the rotor 8 is made in the form of a curve described by a system of equations

x4Zicos (p - # - 2lsln b | ± x X s.;

Y-iZi ln (fr-fl-2lM ZlP + ff +

where sin (zi, / 3)

-A-B ± / f -C2B2 + A2C2 C2-B2

0

five

0

five

0

five

0

five

A 2 Sin (z2 F);

2

In -Јcos f -4-12 cos (Zi p):

2

С ij- sin p + I2 sin (Zi p);

I - eccentricity of the working pair of the motor;

And - coefficient of the shortened hypocycloid;

Zi - the number of teeth of the rotor 8;

7.1 - the number of teeth of the stator 6;

p is the angle of rotation of the radius vector in the formation of a shortened hypocycloid;

P is the angle of rotation of the axes of the coordinates of the shortened hypocycloid relative to the fixed axes of the rotor 8.

The motor operates as follows.

The working fluid under pressure is supplied to the working chambers 12, the rotor 8 is driven into rotation. The rotor 8 rolls around the inner surface 7 of the stator 6 in a plane-parallel motion, and causes the output shaft 11 to rotate using sleeves 19 rolling around the side holes 10 of the rotor 8 The sleeves 19 are constantly pressed to the surfaces of the lateral orifices 10 of the rotor 8 by means of the hydrostatic pressure of the working fluid supplied through the inlet channels 2. During the plane-parallel motion of the rotor 8, the working chambers 12 narrow and the working fluid from these are expelled through the discharge channels 3 into the discharge line. The locking of the working chambers 12 is carried out by the spool 15, which overlaps or opens the corresponding windows 14 of the distribution disk 13.

x sin

zifr-j

50

Claims (1)

The invention The planetary cycloid hydraulic motor, comprising a housing with inlet and outlet channels and an end cap, a stator with an internal toothed surface installed in its cylindrical cavity, a rotor with an external toothed surface and through holes, eccentrically mounted on the shaft in the stator to form workers chambers, a distribution disk with windows and a spool with by-pass channels, while the inlet and outlet channels of the housing are communicated by means of by-pass channels and chambers, and the rotor is kinematically connected to the shaft by means of a disk with fingers placed in the lateral holes of the rotor, which also, in order to increase reliability in operation, is equipped with cylindrical bushings, the latter are freely installed in through-holes x rotor on the fingers with the formation of internal and external cavities communicated with the inlet channels, while the inner surface of the stator is made in the form of an eccentric shortened hypocycloid, and the outer surface of the rotor is made in the form of a curve describing My next set of equations: X Zicos (y7 -) - 2lsin Zi () + Z2 / 3 X Y Zisln (y - /) - 2lco8Zl + + Z2 x x sin Zifr-ffi Vrl 2D2 -A-B ± VC -C43Z + A2C v2r2 A | sin (zz p): P In -j- cos p + r cos (Zi ip); n C 3 - sin p + I2 sin (Zi p); I - eccentricity of the working pair of the motor; A - coefficient of shortened hypocycloid; Zi - the number of teeth of the rotor; Z2 - the number of teeth of the stator; (p is the angle of rotation of the radius vector in the formation of a shortened hypocycloid; / - the angle of rotation of the axes of coordinates of the shortened hypocycloid relative to the fixed axes of the rotor. , nineteen