SU909152A1 - Hydro-percussion device - Google Patents

Description

(54) HYDRAULIC DEVICE

one

The invention relates to the mining industry and construction, in particular, to gior-impact devices, used as hand tools and attachments.

Ivesten is a percussion mechanism containing a drummer and a live-water piston in the cylinder connected to the crank and forming in the cylinder together with the drummer a closed air chamber in which the piston is forced into the piston, and the working stroke causes increased pressure causing accelerator l.

The disadvantage of this mechanism is low efficiency, cylinder overheating, vibration and noise.

The closest to the technical essence and the achieved result is a hydropercussion device, comprising a housing with an axial bore in the end face, a piston 6 oeks, a spool of utflevka, hertz supper, a battery,

the piston cavity between the end of the housing and the piston, the pressure head to the drain line C2J.

However, the known device has a complicated manufacturing technology. To put such devices into operation, it is necessary to have a constant compressed air source for periodically pumping it into the battery cavity after disassembly or long operation.

to shock device. This feature and the dependence of the functioning of the hydro-pneumatic hammer on the sources of compressed air significantly reduces the operational reliability of the pneumatic hammer. Moreover, to change the energy of a single blow, it is necessary to vary the injection pressure, which also requires the presence of a compressed air source.

The purpose of the invention is to reduce the reaction

20 recoil and increase the operational reliability of the impact mechanism.

This goal is achieved by the fact that the battery is designed as a closed

the discharge cavity, which is formed by the dium of the inner surfaces of the housing and the two outer cylindrical surfaces of the piston, in the axial hole at the end of the housing

Installed adjustable membrane

FIG. 1 shows a percussion mechanism; a general view; in fig. 2 is a view A of FIG. one.

The hydraulic shock device contains a housing 1 with an axial bore 2 at the end, a piston head 3, a control spool 4, a tail 5, a battery 6, a piston cavity 7 between the end of the body 1 and the piston 3, a pressure head 8 and a drain 9 line.

The battery .6 is made in the form of a closed discharge cavity, which is formed by two inner surfaces of the housing I and two outer cylindrical surfaces of the piston-crush 3. In the axial bore 2, there is an adjustable elastic membrane 10 at the front. In the piston-striker 3 there are radial channels 11 and 12 and axial

the channel 13, the connecting platoon 14 of the strips 14 from the drain 15. In the piston cavity 7 there is an opening 2 in which an adjustable displacement or alignment of the elastic membranes, 1O, takes place during the rotation of the shaped nut 16.

The device works as follows.

The working fluid from the hydraulic pump through the opening 8 in the housing enters the charging cavity 14. The working fluid acting on the end face of the piston 3 moves it to the right. When the piston-bladder 3 moves to the right in the cavity 6, a discharge is created.

The platooning process takes place until the piston-firing pin 3 blocks the drain hole 9. As the piston further moves further to the right, the working fluid in the closed drain cavity 15 along the radial channel 11 and the axial channel 13 acts on the left side spool 4 and, 1 vodoleva sogfot the appearance of the spring 5,

moves spool 4 to the right. In this case, the cocking cavity 14 communicates through the channels 12, 13 and 11 with the drain cavity 15. The working fluid in the charging cavity 14 is poured into the drain cavity 15, because under the action of the discharge of gas in the cavity 6 the piston head 3 moves rapidly to the left, acquiring k-inetic energy before hitting the tool or the face.

The effectiveness of the percussion device lies in the fact that using a closed cavity in which discharging is created as an energy accumulator, the need for sources of compressed air (compressor or compressed air cylinder) is eliminated, thereby increasing its operational reliability. and maintainability. In addition, it is possible to control the energy and impact frequency without changing the parameters of the hydraulic drive.

Claims (2)

1. USSR author's certificate number 338629, cl. E 21 C 3/24, 1969. 2. USSR author's certificate number 344065, cl. Е 21 С 3/24, 197О (dutotip). View A .2.