SU800349A2 - Hudraulic percussive device - Google Patents

Description

(54) HYDRAULIC DEVICE

The invention relates to the mining industry, construction and road building industry, in particular, to devices for breaking frozen and rocky soils by pulsed loads.

According to the main author. St. 685819 a hydraulic shock device is known, which includes a housing with a striker placed in it, connected to a piston and a rod, a distribution unit located between periodically communicating platoon and overflow chamber 1.

Its disadvantage is low efficiency.

The purpose of the invention is to increase efficiency.

To achieve this goal, a closing ring j mounted on a sliding fit and a ring pusher made in the form of a cross fixed on the striker are mounted in the charging chamber.

Figure 1 shows the proposed hydraulic hammer device; Figures 2 and 3 show pusher structures; 4 shows the construction of the closure ring; FIG. 5 shows a section A-A in FIG. four

Hydraulic shock device includes a housing 1 with a striker 2, a piston 3 and

piston 4 hydropneumocumor torus. On the housing 1 there is a locking-regulating element 5, which has the possibilities of radial deformation. In the housing there are channels 6 and 7 for connecting the cocking 8 and the overflow 9 chambers. Item 5 has

0 an annular control cavity 10, connected through channels 11 and 12 and grooves 13 to chamber 8 and drain line 14. In the upper part of the body there is a gas chamber 15. In

5, the piston 4 has a groove 16. The cavity 10 is formed by the element 5 and the inner surface of the glass 17. In channel 11, the throttle 18 is located.

Q The device has a pusher rod 19. On the driver 2, a pusher 20 is mounted, rigidly connected with the driver 2. Between the piston 3 and the pusher 20, a shut-off valve is installed along a sliding fit.

5 ring 21. In the glass 17, a supply channel 22 is made from the pressure line. The ring 21 consists of a locking part 23 and stops 24 for pushing the ring

. h at the moment of impact. Pusher 20 rings

made in the form of a cross 25, rigidly mounted on the striker 2 in the platoon chamber 8.

The device works as follows.

The piston 4 through the rod 19 moves under the action of the processed medium, closes the drain channel 12, while the element 5 closes the channels 6 and 7 of the charging 8 and overflow 9 chambers, and the percussion device is charged. At the end of the plunger, the plunger 20, moving the locking ring 21, closes the channel 22, at the same time the piston through the groove 16 connects the cavity 10 to the drain line 14, the pressure above the element 5 drops, the channels 6 and 7 are interconnected.

During the working stroke, the piston 3 displaces the liquid from the chamber B to the chamber 9 through the channels b and 7 and the space under the element 5. At the same time, the locking ring 21 under the action of the force of the shank remains in place.

By the end of the stroke of the piston 3 by means of the stops 24, the pusher 20 moves the ring 21, opening the channel 22.

15

The buildup of pressure in cavity 10 is constrained by the presence of throttles 18, which is an element of lag. in channel 11.

The proposed design increases the efficiency of the device and enables the operation of several devices from one pumping station.

Claims (1)

Invention Formula A hydraulic shock device according to Av. No. 685819, characterized in that, in order to increase efficiency, a locking ring mounted on a sliding fit and a pusher ring, made in the form of a cross, fixed on the striker, are mounted in the charging chamber. Sources of information taken into account in the examination 1, USSR inventor's certificate 685819, cl. E 21 C 3/20, 1978 (prototype). yy Gcc L7 lput.2 2S Put.3 23 / A-A