SU1498937A1 - Variable axial-piston hydraulic machine - Google Patents

Abstract

The invention relates to mechanical engineering, in particular, to adjustable pumps and hydromotors with an inclined disk, intended for use in hydraulic drives of construction, road, agricultural and other mobile machines. The purpose of the invention — an increase in volumetric efficiency — is achieved by making blind bores 14 for each shoe 9 in plates 13 supported on an inclined disk 17, the end surface of which has hydrostatic discharge chambers communicating with the windows of the distributor 4 through channels 10 made in pistons x 8, the shoes 9 and the plates 13, as well as using arcuate grooves 18, 19 on the supporting surface of the disk. 3 il.

Description

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1

The invention relates to mechanical engineering, in particular to adjustable pumps and hydraulic motors with an inclined disk, and can be used in construction hydraulic, road, agricultural and other mobile machinery.

The purpose of the invention is to increase the volumetric efficiency.

FIG. 1 shows a hydraulic machine, a longitudinal section; in fig. 2 - groove on the supporting surface of the disk; in fig. 3 - the channels informing zaporschnevy cavities and pockets of disk supports.

The hydraulic machine includes a housing 1 within which the drive shaft 2 is installed

check 7, carried out either the injection or suction of the working fluid through the windows 5 and b of the distributor 4. The forces arising in this case are perceived by the end surface 23 of the disk 17. The pockets 22 of the end surface 23 of the disk 17 by channels 10, 11, 15 and 21, and the slots 18 and 19 communicate with the windows 5 and 6 of the distributor 4, thereby hydrostatically unloading the end surface 23 of the disk 17. The grooves 18 and 19 on the supporting surface 16 of the disk 17 do not communicate with each other due to the presence of the cylinder block 3 13, which is pressed against on the surface 16 of the disk 17 si10

fixed on it by the cylinder block 3. 15 clamps pressing due to the separation is in contact with the valve 4, having two symmetric, arcuate windows 5 and 6 (one for suction, the other for pumping working fluid). The cylindrical bores 7 of the cylinder block 3 are equipped with pores 8, on which the pads 9 are hinged. Pistons 8 and 5 have channels 10 and 11. In addition, chambers 9 also have chambers 12 for hydrostatic discharge of the latter. The bashmaks rest on the plate 13, in which for each shoe 9 there is a blind hole 14, in the central part of which there is also a hydrostatic discharge channel 15. The plate 13 is located on the support surface 16 of the inclined disk 17, on which arcuate grooves 18 and 19 are made, and the disk 17 is mounted in the hydromachine so that the axis 20 of symmetry of the grooves 18 and 19 coincides with the axis (not shown) of the windows 5 and 6 distributor 4. In disk 17

The squares of the area 8 and the base 9, compacts them.

Due to the implementation of blind bores 14 in the plate 13 under the shoulder 9, the plate 13 synchronously rotates with the last 20, reduces the leakage of working fluid from the grooves 18 and 19, which leads to an increase in volumetric efficiency.

Claims (1)

Invention Formula 25 Adjustable axial-piston hydromachine with an inclined disk, comprising a housing within which a rotating cylinder block with pistons and bashmaks supported on a 30 plate mounted on the disk supporting surface and provided with arcuate grooves, the axis of symmetry of which coincides with the axis, is mounted on the drive shaft. the symmetry of the distributor windows, and the hydrostatic channels are made in the disk, the piston, the shoes and the plate, the channels 21 are designed for 35 loads to communicate the end pockets messages pockets 22, located on the end surface 23 of the disk 17, with windows 5 and 6 of the distributor 4. When the cylinder block 3 rotates, the pistons 8 reciprocate relative to the cylindrical working surface of the disk with the distributor windows, characterized in that, in order to increase volumetric efficiency, deaf bores are made in the plate for each bashmak, in the bottoms of which hydrostatic unloading channels are located . check 7, carried out either the injection or suction of the working fluid through the windows 5 and b of the distributor 4. The forces arising in this case are perceived by the end surface 23 of the disk 17. The pockets 22 of the end surface 23 of the disk 17 are through channels 10, 11, 15 and 21, and also, the slots 18 and 19 communicate with the windows 5 and 6 of the distributor 4, thereby performing hydrostatic unloading of the end surface 23 of the disk 17. The grooves 18 and 19 on the supporting surface 16 of the disk 17 do not communicate with each other due to the presence of the plate 13 which is pressed against the supports second surface 16 of the disc 17 B The squares of the area 8 and the base 9, compacts them. Due to the implementation of blind bores 14 in the plate 13 under the shoulder 9, the plate 13 synchronously rotates with the last 20, reduces the leakage of working fluid from the grooves 18 and 19, which leads to an increase in volumetric efficiency. Invention Formula 25 Adjustable axial-piston hydromachine with an inclined disk, comprising a housing within which a rotating cylinder block with pistons and bashmaks supported on a 30 plate mounted on the disk supporting surface and provided with arcuate grooves, the axis of symmetry of which coincides with the axis, is mounted on the drive shaft. the symmetry of the distributor windows, whereby the hydrostatic surface of the disc with the distributor windows is made in the disk, the piston, the shoes and the plate, in order to increase the volumetric efficiency, The plate is made with blind bores under each bashmak, in the bottoms of which hydrostatic discharge channels are located. 7J W sixteen srig.2 22 rig.Z