SU1328049A1 - Apparatus for producing hydraulic shocks in working cylinder of hydraulic machine - Google Patents

Abstract

The invention relates to the field of mechanical engineering, in particular to equipment for metal forming. The purpose of the invention is the expansion of technological capabilities by increasing the amplitude of the pressure pulse of the working fluid. A device for creating hydraulic shocks in the working cylinder of the hydraulic machine comprises a spool mounted in the housing cavity with the possibility of insertion, on the surface of which longitudinal grooves are made. The axial bore of the spool is connected by a radial channel with a drain and diametrically located radial bores - with the body cavity. Accordingly, these holes in the housing are diametrically arranged radial channels. Some of them are connected with the hydraulic system of the drive, and the other with pipelines of equal length and at the same angle to the axis - with the unit for supplying the working fluid to the working chi, lindra. This allows, when turning the spool, to form pressure pulses of increased amplitude in the working cylinder. 1 h. item f-ly, 6 ill. (O (L with to 00 about 4 WITH

Description

one

The invention relates to mechanical engineering, in particular to the design of equipment for metal forming.

The purpose of the invention is the expansion of technological capabilities by increasing the amplitude of the pressure pulse of the working fluid.

FIG. 1 is a schematic diagram of the device; in fig. 2-4 are sections A-A, B-B and B-B in FIG. 1, respectively; in fig. 5 is a diagram of the connection of pipelines with a unit for supplying a working fluid to a working cylinder; in fig. 6 is a view of FIG. five.

The device consists of a housing 1 with an annular groove 2 and radial holes 3-6, connected by lines 7 to the hydraulic system of the drive. The radial holes 8-11 are connected to the node 12 for supplying the working fluid to the working cylinder by pipelines 13, the latter are of the same length. In the housing bore there is a spool 14, on the surface of which longitudinal grooves 15-18 and axial channel 19 are connected, connected with grooves of radial bores 20 and 21. Channel 19 is also connected by bore 22 to a drain line 23. Highway 24 connects a check valve 25 safety valve 26 and pumping station 27 with accumulators 28. Pipelines 13 are located at the same angle to the inlet port 29 of the unit 12.

The device works as follows.

Fluid from pumping station 27 through non-return valve 25 enters the accumulators 28 and charges them up to the pressure provided by safety valve 25. When turning the spool 14, high pressure fluid through line 7 is directed through radial holes 3-6 of housing 1 and their corresponding grooves 15-18, the radial holes 8-11 and the pipelines 13 of equal length to the node 12. The hydraulic pulses of the individual shock waves, passing through the pipelines 13, simultaneously enter the feed hole 29 where the individual impulses are added cos one directed and working pi:. 1indr 30. There, the impact on the piston, it moves together with the rod, performs p.chasticheskuyu deformation of the workpiece.

Upon subsequent rotation of the spool 14, the liquid from the working cylinder 30 through the opening 29, through the trunk m 13 enters through the radial holes 8-11 of the housing 1 and the radial holes 21 of the spool 14 into the axial channel 19 and leaves

15

20

25

28049

2

to drain through the radial hole 20, the annular groove 2, the hole 22, and the main 23. The cycle repeats every 90 °.

Thus, a change in the design of the device without increasing the length of the pipelines and creating special high pressure sources through the use of standard hydraulic equipment and new hydraulic connections allows an increase in the amplitude of the pressure pulse in the working cylinder, which leads to an increase in the deformation force needed to obtain complex shapes. products with large dimensions in the plan, while increasing their quality.

The economic effect of the implementation of the invention is provided by expanding the technological capabilities of the device for creating hydraulic shocks in the working cylinder of the hydraulic machine.

Claims (2)

Invention Formula . A device for creating hydraulic shocks in the working cylinder of a hydraulic machine, comprising a housing with an annular groove connected to a drain and radial holes, one of which communicates with the hydraulic system of the drive, and the other is connected by pipeline to the working fluid supply unit to the working cylinder The spool is rotatably mounted with a pair of longitudinal grooves and radial holes diametrically located on the surface, the latter communicating with each other through an axial channel in the spool and with the hole body, characterized in that, in order to expand technological capabilities by increasing the amplitude of the pulse of pressure of the working fluid, it is equipped with additional pipelines connected to the working fluid supply to the working cylinder 40 are made evenly and diametrically located around the circumference of the additional longitudinal grooves, and in the housing, corresponding to these grooves, additional radial holes are made, some of which are connected to the hydraulic system of the drive, 45 and others with additional pipelines. 2. An apparatus according to claim 1, characterized in that the pipelines connecting the holes of the housing with the unit for supplying the working fluid to the working cylinder are of the same length and located at the same angle to the axis of the inlet port of the unit. thirty 35 50 Sh 28 (Pus.1 fl-l Bb 20 2jn 22 ig.2 18 sixteen  Rig.Z 77 / J W (ragl 3 12 ZG 30 12 Phage. five Type G Jj Jj J5 Jj ag 6