SU1252157A1 - Percussion-action pneumatic machine - Google Patents

Description

The invention of the OTHOCHICH for construction, mining, mining, and can be used in manual initiation PMaiUMCCKHx ml x x percussion.

Known pneumatic percussion machine, including a casing with a handle, installed in it with the possibility of longitudinal movement of the body, in which the impact piston is softened, the air-distributing device used to alternate the air supply from: the compressed air in the cavity between the body and the piston, damping cavity formed by the skin and the housing and installed in the latter with: the ability to move the plunger.

Closest to the invention, the technical essence is a pneumatic percussion machine, containing a coaxially installed casing with exhaust ducts and a housing with a pre-exhaust expansion chamber and a shock piston.

A disadvantage of the known machines is the high level of noise due to the great lack of comfort in the air popping.

The aim of the invention is to improve the efficiency of gum suppression.

This goal is achieved by the fact that, in a pneumatic percussion machine containing a coaxially installed casing with exhaust casing and housing, a pre-exhaust expansion chamber and a percussion piston between the end surfaces of the casing and casing and the inner surface of the casing, an expansion cage is formed in the casing axial kanachs are made, communicating the pre-exhaust expansion chamber with the pyhlopinign channels.

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NP is a drawing of a pneumatic percussion machine, pro- / kch.lyy incision.

The Piematical Machines of the Uyigtria shock contains a coaxially installed 110 (a casing with exhaust c, 1 canal 2 and a casing 3 with exhaust 1, 1 oki and 5 and axial channels 6 and 7, a rear exhaust cage 8, a piston 9 s air diffusion device 10 and the working tip 1I.

Pneumatic percussion machine works as follows.

When the starting device (not shown) is turned on, the compressed air enters the air distribution device 10 and leads the body 3 and the impact piston 9 to the reciprocating motion of the JibHbse, as a result of which the latter produces four drops by its working tip 1. As the piston moves 9 downwards, with its upper end face, it opens the upper compartment edge of the window 5 and the exhausted compressed air through channel 7 begins to flow into chamber 8 and move further along channel 6. By the time the upper end of the piston 9 of window 4 is opened, the pressure inside enney housing cavity 3 above the piston drops significantly and to the same time of air from the chamber 8 through the channel 6 is supplied to a place output from window A the spent compressed air, wherein proiskho- DD1T intensive offset and interference RGST l Vuh streams. When piston 9 moves backward, the noise-muffling process is repeated.

Thus, due to the intensive Fioro mixing and interference of the two streams, which contribute to the mutual quenching of their turbulences, the effectiveness of 1-stunning attenuation is observed.

Editor A.Vorovnch

Order 457D / 18 Circulation 1031 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Compiled by T. Fomichev

Tehred L. Serdyukova Proofreader A.Obruchar

Claims (1)

PNEUMATIC SHOCK ACTION Raspberry, comprising a coaxially mounted casing with exhaust * channels and a housing, a one-exhaust expansion chamber and an impact piston, characterized in that, in order to increase sound attenuation, a pre-exhaust expansion is formed between the end surfaces * of the housing and the casing and the inner surface of the casing. chamber, and axial channels are made in the housing, communicating the preliminary expansion flap chamber with exhaust channels. ¹ 2