SU1219731A1 - Percussive apparatus for driving in rod-type members - Google Patents

Description

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The invention relates to construction equipment and can be used for driving pipes, a tongue, piles and other rod-like elements into the ground, as well as for compacting the soil and destroying mountains of P1YX rocks.

The purpose of the invention is to increase the shock power of the device.

FIG. 1 shows a percussion device, a longitudinal section in FIG. 2 is a section A-A in FIG. 1; FIG. 3 shows a section BB in FIG. one.

The percussion device consists of a housing 1, a hammer 2, a cylinder 3 with a sleeve 4 pressed into it, an annular valve 5 with a seat 6. There are holes 7 and 8 in housing I and a check valve 9 and a bore on its inner surface 10 are mounted. two-stage, has a groove 1I at a lower stage and forms a buffer chamber 12 with the body. Cylinder 3 on the outer surface eats groove 13 and forms a purge chamber 14 with the body, and an compressor chamber 15 is formed with a barrel and a hammer. The blowing channel 16 is formed in the cylinder 17 inlet 18. The inner surface of the cylinder bore and vsholneny longitudinal channels 20 and 21.

A cylinder 4 is pressed into the cylinder, forming a working chamber 23 with the hammer and the cover 22. Protrusions 24 are formed on the outer surface of the sleeve 4. The sleeve 4 forms with the cylinder 3 a main 25 and an additional 26 cooling chambers with an inlet 27 and output 28 for the cooling liquid In the lid 22 is a spark plug 29. In the gate 38, an inlet 30 is provided, a purge 31 and an exhaust 32 window. The compressor chamber communicates with the purge through openings 33 in the valve seat. The combustible mixture is fed into the compressor chamber through the reverse valve 9 through the channel 34. The device is started up using valves 35 and 36 of the control and pipeline 37.

The device works in the following way.

Reverse stroke drummer 2 makes under the action of gas, the preliminary 197312

but compressed in the buffer chamber 12. Prior to the beginning of the reverse stroke, the compressor chamber 15 through the channel 34 and the check valve 9 is filled with a combustible mixture.

5 When the drummer moves backwards, the opening 7, the valve 9e of the purge 31 and the exhaust 32 windows are closed and the ring valve 5 is opened. From the compressor chamber 15 through

10 of the opening 33, the combustible mixture is expelled into the purge chamber 14 when it is compressed. At the same time, in the working chamber 23, the working mixture is compressed to the required state for ignition.

When the drummer approaches the top dead center, the working mixture is ignited in the working chamber. At this moment, the buffer chamber is 12.

20 through port 7 communicates with the atmosphere. In the working chamber 23, during the combustion of the working mixture, there is a sharp increase in pressure, under the action of which the striker moves E5 forward, closes the opening 7, compresses the air in the buffer chamber 12 and strikes the front face of the body. At the same time, the volume of the compressor

1) 0 of the chamber 15 and it is filled with a combustible mixture through the channel 34 and the open valve 9, and when opening the opening 7, the pressure of the compressor chamber is equalized with the atmospheric pressure. At the forward position of the firing pin, exhaust gas is removed from the working chamber through the exhaust port 32, and a combustible mixture enters the working chamber through the purge window 31 from the purge chamber 14.

When the combustible mixture is in the compressor chamber, it is heated from the surface of the firing pin.

j. In the purge chamber, the combustible mixture is cooled, in contact with the outer wall - a bore 10 in the housing, and with the inner 13 - a groove on the outer surface of the cylinder 3, which has the coolant temperature in the additional chamber 26. In addition, the additional chamber 26 cools through the sleeve wall hitting 2.

The walls of the working chamber 23 are cooled with the help of the main cooling chamber 25. With simultaneous cooling of the combustible mixture in the product 35

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In this case, the working chamber and the working chamber improve the filling of the latter and, as a result, the power of the device increases. And combining the purge of the working chamber with filling it with a combustible mixture reduces the loss of combustible mixture and increases its efficiency.

When feeding the combustible mixture to the compressor chamber, the issue of lubricating the rubbing surfaces is easily solved, which significantly reduces friction power losses and increases the service life of the device.

The launch of the device is carried out as follows.

When the drummer is in the middle position, with the taps 35 and 36 open, the compressed air from the source enters through the conduit 37 through the throttle openings 8 into the buffer chamber 12, in which pressure builds up. Since atmospheric pressure acts on the side of the compressor and working chambers, the drummer moves backwards. Simultaneously

The combustible mixture is fed into the compressor chamber through channel 34 and the open valve 9. In the rear position of the impactor, compressed air through channel 18, inlet port 30, flows through a groove 11 into the compressor chamber, in which pressure rises rapidly, mixes with the combustible mixture and enters purge chamber. At this time, the pressure in the buffer chamber is atmospheric.

Under the action of pressure in the compressor chamber, the striker moves forward and compresses the air in the buffer chamber. When the drummer approaches the front end of the body, a purge port 31 opens, through which the combustible mixture flows into the working chamber. Further, under the action of the air compressed in the buffer chamber 12, the impactor returns. The combustible mixture in the working chamber is compressed and ignited.

After the occurrence of steady flares, the control taps 35 and 36 overlap.

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Claims (2)

1. DEVICE FOR IMPACT ACTION for driving in rod elements, comprising: a housing in which a cylinder with exhaust and purge channels is installed, forming a purge chamber with the housing, a hammer with a groove at a lower stage, forming a buffer chamber with the housing, and a combustion chamber with the cylinder, and with housing and cylinder - compressor chamber, inlet for communication is-. a compressed air device with a compressor chamber, a channel for communicating the buffer chamber through a throttle opening with a source of compressed air, characterized in that, in order to increase the shock power of the device, it is equipped with a main and additional cooling chambers with a coolant supply system, which are respectively located around the combustion chamber and between the cylinder and the purge chamber, while the compressor chamber is communicated through a check valve with a channel for supplying the hot mixture. 2. The device according to π. 1, characterized in that the main and additional cooling chambers are connected by longitudinal channels that are made in the cylinder. FIG. 1 I 2 I 9731