SU1492077A1 - Radial-piston hydraulic motor - Google Patents

Abstract

The invention makes it possible to improve the dynamic characteristics of a hydraulic motor, increase the service life and improve the quality of operation of the distribution unit. The radial-piston hydraulic motor contains a cylinder block (BC) 1 with pistons (P) 2, a toothed torque converter, including an output shaft 3 with a toothed ring 4 and an eccentrically located outer ring (VK) 6 with a toothed ring 7 and longitudinal grooves 11 BC 1 is provided with a longitudinal groove 10, and VK 6 with a radial protrusion 9 adjacent to this groove, which allows fixing the VK with respect to the BC in the angular direction. P 2 interacts with VK 6 with the help of rolling elements 8, which are mounted eccentrically to axis P 2 and interact with grooves 11, which allows P to perform, in addition to reciprocating and reciprocating-rotating movements, the P and V to serve as means of distribution. To do this, they are equipped with working windows 16 and 17 arranged to communicate with the channels of the BC 1 connected to the collectors 12, 13 for supplying and discharging the working fluid. 9 il.

Description

eleven

(L

n m (P) 2, a toothed torque converter, including an output shaft 3 with a toothed crown 4 and an eccentrically located outer ring (VK) 6 with a toothed crown 7 h with longitudinal grooves 11. BC 1 has a longitudinal groove 10, a BK 6 - a radial protrusion 9 adjoining this groove, which makes it possible to fix the VC relative to the BC in the angular direction, P 2 interacts with the VC 6 with the help of rolling elements 8, which

ry are mounted eccentrically to the axis P 2 and interact with the grooves 11, which allows the P to perform, in addition to reciprocating and reciprocating-rotating movements, the P in addition to reciprocating and reciprocating movements and serve as means of distribution. To do this, they are equipped with working windows 16 and 17, which are arranged to communicate with the channels of BC 1 connected to the collectors 12 and 13 of supplying and discharging the working fluid 1 Cpf-ly, 9 Il.

The invention relates to hydraulic machine building, in particular to radial-piston hydraulic motors with a gear torque converter.

The purpose of the invention is to improve the dynamic characteristics by reducing inertial forces, increasing the resource and improving the quality of the distribution unit.

Figure 1 shows the hydraulic motor, a longitudinal section, figure 2 - section aa in figure 1; on fig.Z t section bb in fig 2 | figure 4 - section bb In figure 2, figure 5 - section DG in figure 2; figure 6 is a section dD in figure 2 figure 7 is a section EE in figure 2; on fig.Z - section HF in figure 2; figure 9 - section 3-3 in figure 2.

The radial-piston hydraulic motor contains a block of 1 cylinders with pistons 2, a toothed converter is cool at the first moment, including an output

shaft 3 with an external gear ring 4 and eccentrically on bearings 5, an outer ring 6 with an internal gear ring 7, mounted with the help of rolling bodies 8 with pistons 2 of cylinder 1 and equipped with a device to exclude it a gate with respect to the latter, made in the form of a radial protrusion 9 on the outer ring 6 of the converter, movably coupled to the longitudinal groove 10, fulfilled in the cylinder block 1. The protrusion 9 can be made in the form of a roller in the area of its interface with the groove 10. The rolling bodies 8 in the pistons x 2 are installed eccentrically relative to their axes, and the outer ring 6 of the transducer in

0

five

0

five

0

five

0

five

the contact zone with the rolling bodies 8 is provided with longitudinal grooves 11 with a semi-cylindrical surface.

The hydraulic motor has a distribution unit, including manifolds for the inlet 12 and outlet 13 of the working fluid and associated channels 14 and 15, respectively, extending into the cylinders of the unit 1 and arranged to be periodically blocked by the walls of the piston 2.

The piston 2 is made hollow and provided in the exit zone of the channels 14 and 15 with working windows 16 and 17, made in the form of diametrically spaced grooves in its walls. The working fluid in the collectors 12 and 13 is supplied and discharged through slots 18 and 19.

The hydraulic motor has a crush 20, the output shaft 3 is mounted on bearings 21 and 22, located in the block 1 of the cylinder. And the strut 20, respectively. Each cylinder in block 1 is closed by 23.

The gear ratio of the toothed torque converter is

Z

1 b- 7

Zj-Z,

V

where Z, is the number of teeth of the crown 4 output shaft,

z is the number of teeth of the crown 7 of the outer ring 6 of the converter.

The motor operates as follows.

The working fluid under pressure is supplied, depending on the desired direction of rotation of the output shaft 3, to the sockets 18 or 19 and flows respectively to the collectors 12

or 13, whence on channels 14 or 15. enters the cylinders of block 1 of cylinders. Depending on the orientation of the piston 2 in the cylinder of the block, specified by the position of the outer ring 6 of the gear converter, the channels 14 and 15 are either blocked by the wall of the piston 2 or communicated with the corresponding

working window 16 and 17. For example, a port to use a device to exclude it

Shen 2 is in the neutral position (Fig. 3) and the channels 14 and 15 are covered by its walls. Due to the eccentric arrangement of the rolling body 8 relative to the axis of the piston 2 (FIG. 4), the latter rotates in the angular direction and the working window 17 in its wall begins to communicate with the channel 15 connected to the collector 13. With a similar orientation of the piston 2 (FIG. .5 and 6) all pistons 2 located to the right of the vertical plane passing through the axis of the drive shaft 3 and the radial protrusion 9 of the outer ring 6 of the converter (figure 2) are oriented so that the cylinders of this part of the cylinder block 1 communicate with the collector 13 . At the same time all pistons 2, split Located to the left of the indicated vertical plane, they are oriented so that the cylinders of this part of the cylinder block 1 communicate with the collector 12 by means of the channels 14 and the working windows 16 in the walls of the pistons 2 (Figures 7-9).

Claims (2)

These switching links, as a result of the interaction of the pistons 2 with the ring 6, provide the scanning movement of the outer ring 6, the interaction of the crowns 7 and 4 of the toothed torque converter, and the rotational movement of the output shaft 3 in a given direction. 15 20 25 thirty 35 40 cranking about the latter, the distribution unit, including the supply and removal of working fluid collectors and the channels connected with them, to the cylinder of the block and arranged to be periodically blocked by the walls of the pistons,. characterized in that, in order to improve the dynamic characteristics by reducing inertial forces, increasing the resource and improving the quality of operation of the node, The cylinder block is provided with a longitudinal groove, the device for preventing the outer ring of the converter from turning is made in the form of a radial protrusion on the outer ring of the converter movably coupled with the specified longitudinal cylinder block groove, the bodies are eccentrically relative to their axes, the outer the converter ring in the contact zone with the rolling elements of the pistons is provided with longitudinal grooves with a semi-cylindrical surface, the pistons are hollow and equipped with canals in the exit zone to the cylinders fishing distribution node operating windows vsholnennymi view through slots in their walls p. 2. A hydraulic motor according to claim 1, characterized in that the radial protrusion on the outer ring of the converter in the area of its interface with the longitudinal groove of the cylinder block is made in the form of a roller. 1. Radial-piston hydraulic motor, | —containing a cylinder block with pistons, toothed torque converter, including an output shaft with an external gear ring and an eccentrically located external ring with an internal ring gear, installed with the possibility of interaction with rolling elements with a piston cylinder block and equipped with 15 0 five 0 35 0 five rotation relative to the latter, the distribution unit, including the working fluid supply and discharge collectors and the channels associated with them, exit into the block cylinders and arranged with the possibility of their periodic overlapping by the walls of the pistons,. characterized in that, in order to improve the dynamic characteristics by reducing inertial forces, increasing the resource and improving the quality of operation of the node, The cylinder block is provided with a longitudinal groove, the device for preventing the outer ring of the converter from twisting is made in the form of an i radial protrusion on the outer ring of the transducer movably coupled to the specified longitudinal groove of the cylinder block, the rolling bodies in the pistons are set eccentric about their axes In the zone of contact with the body, the pistons are provided with longitudinal grooves with a semi-cylindrical surface, the pistons are hollow and fitted in the zone of exit into the cylinder The channels of the distribution unit with working windows, made in the form of through grooves, are their walls. 2. A hydraulic motor according to claim 1, characterized in that the radial protrusion on the outer ring of the converter in the area of its interface with the longitudinal groove of the cylinder block is made in the form of a roller.