SU734405A2 - Rock-breaking device - Google Patents

Description

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The invention relates to a device for the destruction of rocks by impact.

Basically auth. St. No. 381763 describes a device for the destruction of rocks, containing its body with a purge tank and purge channels, a firing piston, a slave cylinder with an exhaust channel, a compressor and buffer chambers and a rod, while the device is equipped with a valve that connects the IM and buffer chamber with a working cylinder, the exhaust channel of which is also provided with a valve 1.

The operation of this device is associated with some maintenance labor due to the lack of funds for its autonomous launch. At each start-up, the device must be supplied with compressed air through the system of connecting pipes, for example, from an additional tank or a portable cylinder charged from a separate compressor. This requires a waste of time for the installation and disassembly of the connecting piping and maintenance of the compressor, as a result of which the net operating time of the device is noticeably reduced.

The purpose of the invention is to reduce the labor intensity of servicing the device by ensuring the autonomy of its commissioning.

This is achieved by the fact that the device is equipped with a compressed air starting chamber, which through a reducing valve and a control valve is connected to a compressor buffer chamber and, through an additional control valve, to a trigger mechanism and a starting valve.

The drawing shows the device, a longitudinal section.

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Claims (1)

The device for destroying rocks comprises a housing 1, inside which are located a piston head 2 and a rod 3 connected to a working tool 4. In the opening of the housing 1, a pusher 5 is installed, which interacts with a plunger pump 6, which is connected by a pipe 7 to an injector 8 mounted in end of cover 9 of housing 1. In cover 9, electrosvector 0 and trigger valve 11 are also strengthened. A trigger mechanism 12 is provided in the device, channel 13 and purge tank 14 with channels 15, 16 in its wall are made in case 1. A casing 17 is attached to the housing 1, into which the exhaust channel 18 goes, as well as a pipe 19, into which the suction channel 20 goes. A control valve 21, installed in the exhaust channel 18, is connected to the compressor buffer chamber 23 via the air line 22 through channel 13, which purge channel 15 is divided into a compressor chamber located between channel 20 and purge channel 15, and a buffer chamber located between purge channel 15 and the piston piston 3. The combustion chamber 24 is located between the pressure chamber 2 and the lid 9 dr.) and a pressurization chamber 25, separated by an exhaust channel 18. A valve 26 is installed in the purge channel 16. The device has a starting chamber 27 built in the housing, which is connected to the compressor-buffer duct 30 via the pressure reducing valve 28 and the air supply control valve 29 on one side camera 23, and on the other, through an additional control valve 31, is connected by pipelines 32, 33, respectively, with a trigger mechanism 12 and a trigger valve 11. The launch chamber 27 is equipped with a safety valve 34 and a test pressure gauge 35. To valve 31 The air duct 36 is connected to enter the device into operation. The device operates as follows. When the valve 29 is closed, short-term opening of the valve 31 from the starting chamber 27 delivers compressed air to the starting mechanism 12, and through it to the compressor-buffer chamber 23. Compressed air moves the firing piston 2 to the right (according to the drawing), compressing the air in the chamber of 24 burns. During its movement, the piston-head 2 actuates the pusher 5 of the plunger fuel pump 6, which with the help of the pipeline 7 and the nozzle 8 feeds fuel into the combustion chamber 24. The piston head, continuing to move, compresses the air in the combustion chamber 24 to the pressure required to ignite the fuel, and simultaneously opens the channel 20 through which a fresh portion of air enters from the compressor-buffer chamber 23. Due to the high degree of air compression in the combustion chamber 24, the fuel injected into it ignites and starts to burn. The resulting combustion gas expands and moves the firing pin 2 to the left. With this mixing, the exhaust port 18 is opened and the combustion products through the open valve 21 and the nozzle 17 are released into the atmosphere. Zapom.m Porschen-head 2 closes the purge channel 15 and opens the purge channel 16, resulting from the purge tank 14 air under pressure through the channel 16 and the valve 26 enters the combustion chamber 24, ventilates it and through the exhaust channel 18 and the nozzle 17 goes in atmosphere. When moving to the extreme left position, the piston-die 2 squeezes a part of the air in the chamber 23 located between the channel 15 and the piston of the rod 3 to the pressure necessary to return the piston –brick 2 to the extreme right position, then strikes the rod 3, made tool 4 destroy the rock mass. The piston of the rod 3, displaced, opens the channel 13 and part of the air from the chamber 23 through it flows under pressure to the valve 21, through which the exhaust channel 18 closes. The valve 26 closes the purge channel 16. As a result, between the piston-brisk 2 and a cover 9 forms a closed volume of air, including the air volume of chamber 25 and chamber 24. The main part of the compressed air of the compressor-buffer chamber 23 moves the firing pin 2 to the extreme right position, while compressing the air in chambers 24 and 25 and ensuring most needed The degree of air compression in the combustion chamber 24. Subsequently, the cycles are repeated in the same sequence, but without the participation of the trigger mechanism 12. To ensure the autonomy of the launch, the starting chamber 27 periodically during periods of idle stroke of the piston, the bass 3 is charged with compressed air from the compressor buffer chamber 23. For this purpose, with the valve closed 31, the valve 29 is opened. As a result, the compressed air of a given pressure and in a predetermined amount flows through the channel 13 from the compressor buffer chamber 23, the air pipe 30, the valve 29 and the pressure reducing valve 28 into the starting chamber 27. After filling it with compressed air.m, the pressure of which is controlled by the pressure gauge 35, closes the valve 29, and the device is ready for production after stopping the next cycle. The invention The device for the destruction of rocks by author. St. No. 381763, characterized in that, in order to reduce the complexity of its service by ensuring the autonomy of commissioning, it is equipped with a start-up chamber for compressed air, which through a pressure reducing valve and control valve is connected to a compressor buffer chamber and an additional crane control - with trigger and trigger valve. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 381763, cl. E 21 C 37/14, 1973 (prototype).