SU1518507A1 - Pneumatic percussive machine - Google Patents

Abstract

The invention relates to pneumatic machines and can be used in the coal, mining and construction industries. The purpose of the invention is to reduce vibration and increase the reliability of the machine. The machine includes a housing 1, a handle 8 spring-loaded relative to it, an air distribution unit (ASU) 2 and a starting device in the form of a piston-glass (PS) 9 and a locking element spring-loaded relative to it (E) 12. On the side wall of PS 9 there is an opening 10 for connection of its cavity with the atmosphere. When pressing the handle 8, the PS 9 moves and moves the E 12, opening access for compressed air to the ASG 2. The free play of the handle 8 is greater than the distance between the housing 1 and the axis of the hole 10 in the PS 9. When the force is removed from the handle 8 by compressed air PS 9 rises up. Hole 10 communicates the internal cavity of the PS 9 with the atmosphere and E 12 closes the supply of compressed air to the ASU 2. 1 sludge.

Description

one

(21) 4284868 / 23-03

(22) 1407.87

(46) 30-10.89. Bullet no. 40.

(71) Central Research and Development and Design Institute of Tunneling Machines and Complexes for Coal, Mining and Underground Construction

(72) AoYu.Nankin, LBKorol, AoL.-Mironov, L.B.Shilov, AoPoKorsak and VogoAnisimov

(53) 622.233.5 (088.8)

(56) USSR Copyright Certificate No. 1461904, Clo E 21 C 3/24, 1987.

USSR Author's Certificate No. 1281666, cl. E 21 C 3/24, 1986.

(54) PNEUMATIC SHOCK ACTION MACHINE

(57) The invention relates to pneumatic machines and Mobo is used in coal, mining, and construction and construction. The purpose of the invention is to reduce vibration and increase the reliability of the machine. The machine includes a housing 1, a handle 8 spring-loaded relative to it, an air diffuser. Casting unit (I LIE) 2 and starting device in B1 | de piston-glass (PS) 9 and spring-loaded storage element (E) 12

On the side wall of PS 9, a hole 10 is made to connect its cavity with the atmosphere. When you press the handle 8, the PS 9 moves and moves E 12, opening access for compressed air to the ASG 2. The free stroke of the handle 8 is larger than the distance between housing 1 and the axis of the hole 10 in PS 9. When the force is removed from the handle 8 under the action of compressed air PS 9

rises. Hole 10 communicates the internal cavity of the PS 9 with the atmosphere, to the E 12 closes the supply of compressed air to the ASU 2 „1 silt

SP

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sd

15

The invention relates to pneumatic impact machines and can be used in the coal and mining industries and in the construction industry.

The purpose of the invention is to reduce the effects of vibration on the machine.

The drawing shows a pneumatic percussion machine, a general view of the

The pneumatic percussion machine /. The action includes a housing 1 with a hammer (not shown), an air distribution unit 2, connected to the body through an intermediate link 3 with a cavity 4, constantly under network pressure, having an opening 5 and a pre-valve chamber 6, spring-loaded 7 hollow handle 8, movable relative to the housing 1, with a starting device with a pneumatic shock absorber, filled in the form of porgan — stan 9, the cylindrical surface of which has an aperture 10 friction with the atmosphere of the cavity 11

A piston rod 12 is placed inside the piston of the cup 9 with the possibility of free movement relative to the longitudinal axis of the machine5 and an elastic element 13 is installed between the piston-cup 9 and the locking element 12, for example

, The supply circuit of the working agent to the pre-valve chamber 6 intermediate link 3 has a channel 14.

The machine has a working tool. 1 Pneumatic percussion machine works as follows.

The hammer is started by pressing the handle 8 on the piston-cup 9, which moves the closure element 12 and gives access to the compressed air entering through the channel 14 into the pre-valve chamber 6 to the air distribution unit 2,

In this case, due to the equality of pressures in the cavity 4 and 11, the stop element 12 floats, as it were, and the elastic element 13 ensures a steady flow of compressed air into the pre-valve chamber 6, preventing the closing element 12 from accidentally closing the opening 5 5

The air distribution unit 2 alternately supplies compressed air to the chambers (not shown) of the worker and idling moves, causing the drummer (not shown) to perform a reciprocating motion transmitted to the tool 15-. At the same time, the spring 7 together with the pneumatic shock absorber provides a stable decrease in the level of vibration on the handle 8 of the machine with a force of 6.8 dB below the sanitary standards, and the stability of the machine’s operation is ensured along the entire length of the piston stroke of the cup 9 until the hole is communicated 10 with atmosphere

When the force is removed from the handle 8 under the action of compressed air, the piston-cup 9 rises, at. This hole 10 communicates the internal cavity 11 of the piston of the tumbler 9 with the atmosphere, the pressure in the cavity 11- drops sharply and the entrapment element 12 closes the opening 5, clearly turning off the milk, I

Claims (1)

Formula of inventions Pneumatic percussion machine, including a body, an air distribution unit connected to it through an intermediate link, mounted for movement relative to the body and a hollow handle spring-loaded relative to it, a working tool and a triggering device that is placed in the intermediate link with the possibility of interaction with the handle and is made in the form of a pressurized glass valve and a locking element that is strung relative to it, the rod of which is placed in the cavity of the piston glass, characterized in that, in order to reduce vibration and increase reliability of operation, in the side wall of the piston there is a hole in the bore to connect its cavity with the atmosphere, while the piston-cup is oriented to the bottom of the handle, the freewheat of which is greater than the distance between the body of the machine and the axis of the hole in the piston-glass