SU1335441A1 - Hydraulic percussive mechanism - Google Patents

Abstract

The invention can be used in general engineering, as well as in mining for drilling holes and wells in rocks. The purpose of the invention is to increase power by reducing losses in trunk x. For this, the mechanism is provided with coaxially mounted with the possibility of interaction between the end faces of the plungers 11, 1-2 and 13, 14 placed in control 5, 6 and holding 7, 8 chambers, respectively, periodically communicating with pressure 2 and drain 3 lines. 1 il. with (L with her ate and

Description

The invention relates to a percussion tool and can be used in general engineering, as well as in mining, for drilling holes and wells in rocks.

The purpose of the invention is to increase the power at the expense of reducing the loss in materials.

The drawing shows a hydraulic shock mechanism, a longitudinal section.

The hydraulic impact mechanism contains a housing 1 with a pressure 2 and a drain 3 main lines, a central channel 4, periodically connected with it a control 5 5 and 6 and permanently connected holding 7 and 8 chambers, GOLD1-ШК 9 and a stepped piston. 10. The mechanism is provided with coaxially mounted with the possibility of interaction between the ends of the plungers 11, 12 and 1 3, 14, placed in the control 5 and 6 and holding 7 and 8 chambers, respectively. The stepped piston 10 divides the central channel 4 into the chambers of the working 15 and idle 16 stroke. The spool 9 is located in the spool chamber 17.

Hydraulic hammer works as follows.

When the working fluid is supplied through the pressure line 2, the fluid through the channels of the spool 9 and the housing 1 enters the chamber 15 of the working stroke and also into the holding chamber 7. The spool 9 is pressed against the end of the spool chamber 17 from the plunger 13. At the same time, the chamber 16 is idling and the holding chamber 8 communicates with the drain line 3.

Under the pressure of the working fluid, the piston 10 begins to move in the axial direction to strike the tool. In the process of moving the stepped piston 10, the chamber 15 communicates with the control 6. The plunger 13 begins to move the valve 9 in the axial direction. After striking the piston stops. The spool 9 continues to move in the axial direction and connects the drain channel 3 with the chamber 15, the control chamber 6 and the holding 7. Under the pressure of the working fluid from the side of the holding chamber 8 gold VNISH1I Order 4010/16 Circulation 95;

 Prod-polygr. pr-tie, Uzhgorod, st. Project, 4

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Nick 9 is pressed against the end of the cavity on the side of the control plunger 1 1. The piston 10 starts the reverse movement of the opening. The moment comes when the working fluid from the idle chamber 16 begins to flow into the control chamber 5. The pressure in it increases, and the valve 9 jumps to its original position. In this case, the working stroke chamber 15 is in communication with the pressure channel 2, and the idling chamber 16 is connected to the drain channel 3. The pressure in the working chamber 15 5 drops out, the piston 10 stops and begins to move in the axial direction to strike the tool.

The cycle is then repeated in the sequence described.

The hydraulic impact mechanism is stopped by stopping the supply of working fluid to the pressure channel 2.

The invention makes it possible to reduce losses in the channel system by making retaining chambers formed in the ends of the spool by axially moving retaining clamps and, by making control chambers formed in the housing coaxially with the axially sliding valve, which interact with the retaining rails of the plungers. and periodical communication of control chambers with a drain line through the respective working chambers.

Claims (1)

Invention Formula A hydraulic percussion mechanism, comprising a housing with a pressure and drain lines, a central channel, periodically connected to it, controllers and permanently connected holding chambers, a spool and a stepped piston, characterized in that in order to increase power by reducing losses in mains, it is equipped with coaxially mounted with the possibility of interaction between the ends of the plunger, placed in the control and holding chambers, respectively. Subscription