SU1009750A1 - Hydraulic percussive mechanism - Google Patents

Abstract

1. THE GADRAVLICHBSKY SHOCK MECHANISM, the contents of the housing with the distribution box valve 1М1 | СООСНО installed in it a piston and a tubular spool, covering the piston rod, about tl and h ay and c. In order to increase the efficiency, the tubular valve is made with a distribution surface of the same diameter and with a collar in the middle part, and in the body there is an axially movable control plunger., interacting with the collar and forming chambers for supplying the working fluid to their torus (s.

Description

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2. The mechanism of claim 1, wherein the collar of the slide is made of an elastic material with solid inserts in areas opposite to the control plungers, and the slide is fixed against rotation around its axis.

3. The mechanism for PP. 1 and 2, characterized in that the distribution windows alternately overlapped by the spool are located between the chambers supplying the working fluid to the ends of the control plungers.

The invention relates to hydraulic percussion mechanisms and can be used in mechanical engineering as well as mining. A hydraulic drilling tool is known in which the movement of a piston controls a two-stage tubular spool installed in the housing, encompassing a piston thickening and l in contact with it. The closest to the proposed impact mechanism is a hydraulic-impactor mechanism, comprising a housing with distribution windows. A piston coaxially mounted therein and a tubular spool encompassing the piston rod 2. The tubular valve is stepped. The disadvantage of such a hydraulic shock mechanism is low efficiency. The aim of the invention is to increase the efficiency. The goal is achieved by the fact that in a hydraulic shock mechanism containing a housing with distribution windows, CEPNOSE installed a piston and a tubular spool covering the piston rod, the tubular spool is made with a distribution surface of the same diameter and with a collar in the middle part, and in the case axially movably mounted control plungers interacting with the collar and forming chambers to supply the working fluid to their ends. In this case, the collar of the spool is made of elastic material with hard inserts In the areas opposite to the control plungers, and the spool is fixed against rotation around its axis. In addition, distribution windows alternately overlapped by the spool are located between the chambers under the water of the working fluid to the ends of the control plungers. FIG. 1 shows a hydraulic percussion mechanism, a longitudinal section; FIG. 2 shows section A-A in FIG. one; in fig. 3: - node I (zolut collar made of hard material, cut); in fig. 4 collar spool, made of elastic material, cut, knot I; FIG. 5 is a section BB in FIG. 4. The hydraulic percussion mechanism includes a housing 1, coaxially mounted piston 2 and a tubular spool 3, which surrounds the stem 4. From the front, housing 1 is closed by a cover 5. Burt spool 3 interacts with large-diameter control plungers 7 and small-diameter pistons 8 , the shoulder b in the removable embodiment is made in the form of half rings 9, fixed with washers 10. The removable shoulder b from elastic material has solid inserts 11 and is fixed from rotation in the housing 1 by the pin 12. The piston 2 in the middle part has a groove 13 and forms with 1 orpusom bottom 14 and top 15 of different diameter working chamber. The discharge line (not shown in the figures) is connected by a channel 16 to a distribution box, a supply window 17, and a channel 18 with a chamber 15. Channels 19 and 20 are used for communication with the pressure line of a chamber 21 supplying working fluid to the control pistons 8. Distribution window 22 the drain is connected to the drain line (not shown in the figures) channel 23, channel 24 connects the drain 13 of the piston 2 with the drain line, and channels 25 and 26 of the common chamber 15 with the camera 27 supplying the working fluid to the ends of the plungers 7. Hydraulic shock mechanism follows. At the moment of impact, piston 2 opens channels 25 and 26 and via chamber 15 and cann & l 18 communicates with chamber pressure line 27. At this, plungers 7 move valve 3 and plungers.8 to the extreme upper position, opening a window 17, liquid from a discharge line About the channel 16, entering the chamber 14, moves the piston 2 upwards until the channels 25 are opened

and 26 and through the groove 13 and the channels 24 and 23 are not connected to the drain line.

With the drain line, it connects to the chamber 27, into which the ends of the plungers 7 enter. Due to the fact that the chamber 21, in which the ends of the plungers 8 enter, is constantly communicated by channels 18, 19, 20 and 156 to the discharge line, displacement occurs spool 3 to the extreme position. The latter opens window 22 and channel

13 reports chamber 14 with a drain Master. Under the pressure of the working fluid. in the chamber 15, the piston 2 moves downward before striking the material being processed. Thereafter, as the piston 2 opens the channels 25 and 26 and informs the chamber 27c by the discharge line, the working cycle repeats. Performing a hydraulical shock mechanism according to the invention will increase its efficiency and reduce the labor intensity of manufacturing.

Claims (3)

1. HYDRAULIC SHOCK MECHANISM, comprising a housing with distribution windows, a piston coaxially mounted in it and a tubular spool covering the piston rod, which is designed to increase the efficiency of the tubular spool control surface of the same diameter and with a shoulder in the middle part, and control plungers axially movably mounted in the housing, interacting with the shoulder and forming chambers for supplying working fluid to their tori. 2. The mechanism by π. 1, characterized in that the collar of the spool is made of elastic material with solid inserts in areas opposite to the control plungers, and the spool is fixed from rotation around its axis. 3. The mechanism according to paragraphs. 1 and 2, characterized in that the distribution windows alternately blocked by the slide valve are located between the chambers for supplying the working fluid to the ends of the control plungers.