SU663832A1 - Percussion-action device - Google Patents

Description

(54) DEVICE OF SHOCK ACTION

The acquisition relates to the mining industry and is used to crush oversize and loosen the soil. Impact devices are known, including a housing within which there is an impactor, accelerated by the energy of compressed air 11j. In such devices, the energy of a single blow, as a rule, does not exceed 200 kGm. The low power of such equipment limits its effective use. An increase in the impact energy and power of these devices is achieved by burning the charges of combustible substances, such as hydrocarbon fuel mixed with air, in a combustion chamber in communication with the body. However, in such devices, due to high power and the energy of a single blow, considerable recoil forces arise, which complicates their servicing or requires special additional devices to hold the body. The closest to the invention to the technical essence is a shock impact device consisting of a housing with exhaust windows and guide nozzles, a combustion chamber, taken outside the hull, and a drummer with a piston 2. However, the task of damping recoil forces in this device is also not solved, and the impact energy is uniquely determined by the mass of the impact part and the height of its rise. The aim of the invention is to reduce the effort of prediction. This is achieved by the fact that in the percussion device, which includes a housing with exhaust ports and guide nozzles, a combustion chamber outside the housing, the drummer is equipped with a travel stop and is equipped with an extended tail, the piston is axially displaceable and the combustion chamber is installed communicated with the body in its central part. The drawing schematically shows the proposed device in its original position, a general view. The device includes a compensator 1, a mixer 2c with a fuel tank cm 3, an inlet valve 4, a combustion chamber 5, a spark plug 6 and a working valve 7 controlled by 1st 1 through a three-way valve B.

In case 9, there is a shock 10 with a shank 1G / On which a piston 12 is mounted, the part of the elongated xBocTqBHKa 11 of the striker 10 is equipped with a limited 13 stroke. The frets and under the piston for striking the blows are set the springs 14 and 15. In the upper part 9 of the housing 9, the windows 16 and the direction of the nozzle 17 are fastened, the hammer 10 is kept in the initial position,

The combustion chamber 5 communicates with the housing 9 in its center through the operating valve 7,

The device works as follows

In the mixture mixer 2, the compressed air supplied by the compressor 1 c is mixed with fuel, the combustible mixture through the inlet valve 4 enters the combustion chamber 5. After DO7 to reduce the required pressure, valve 4 is closed, and the mixture is ignited by candle b. When the mixture is burned, the pressure in chamber 5 rises / with the help of a three-way valve 8, the operating valve 7 is opened, and the products expire into the cavity of the body 9 with gas pressure 11 and the piston 12 are driven (the shock hits the bottom and the piston moves up). The acceleration values are determined by the gas pressure, the areas affected by the pressure, and the mass of the impact of the piston and the piston. Since the movement is different from defense, all reactive forces are balanced,

The drummer 10 strikes the destroyed medium, the impact energy is proportional to the mass of the drummer with the shank and the square of its speed, the Piston 12 reaches the end of the shank by this time and transmits the force through the spring 14 to the stopper 13 and, therefore, to the drummer 10, lifting it to its original position ,

In the upper position of the piston 12, when its lower end passes the exhaust ports 16, the products of combustion expire through the nozzles 17 into the atmosphere creating a downward reactive force, which partially compensates for the forces caused by the braking of the piston. Then the piston falls down under its own weight. The impact of the rim separating the upper and lower cavities of the guide pipe & l is weakened by the spring 15,

Then the cycle repeats. The proposed technical solution provides the possibility of implementing an impact energy of several thousand kilogram meters with a relatively small mass and dimensions of the device.

Claims (1)

Invention Formula A percussion device that includes a housing with exhaust windows and guide nozzles, a combustion chamber outside the hull, and a hammer with a piston, characterized in that the drummer is equipped with a stroke limiter and is equipped with an elongated shank, in order to reduce recoil forces the piston is axially displaced, and the combustion chamber is in communication with the housing in its central part. Sources of information taken into account in the examination 1, USSR Author's Certificate 362114, class, Е 02 f 5/18, 1972 j .. 2,. Author's certificate of the USSR 139989, kp, Е 02 1E 7/12, 1961, 663832