RU2002947C1

RU2002947C1 - Compressed air hammer

Info

Publication number: RU2002947C1
Authority: RU
Inventors: Леонид Леонидович Лысенко; Альфред Робертович Маттис; Сергей Викторович Шишаев; Генрих Харитонович Бойко; Александр Владимирович Толмачев; Владимир Николаевич Цветков
Original assignee: Институт горного дела СО РАН; Акционерное общество "Уральский завод т желого машиностроени "
Priority date: 1991-06-19
Filing date: 1991-06-19
Publication date: 1993-11-15

Description

ные окна 15 На чертеже приведены следующие условные обозначени Windows 15 The drawing shows the following conventions

Р - давление сжатого воздуха, подведенного к пневмомолоту:P - pressure of compressed air supplied to the pneumatic hammer:

г - радиус сопр жени внутреннего диаметра втулки с ее торцевой поверхностью:g is the radius of mating of the inner diameter of the sleeve with its end surface:

DI - внутренний диаметр втулки;DI is the inner diameter of the sleeve;

Da - внутренний диаметр буртика гильзы .Da is the inner diameter of the sleeve collar.

Устройство работает следующим образом .The device operates as follows.

При приложении к гильзе 1 осевого усили в направлении сверху - вниз зуб 7 упираетс в породу и воздействует через втулку 4(5) на ствол 2, обеспечива смещение ствола 2 относительно пускового устройства 10, упертого в планку 3 и смещаемого вместе с гильзой 1 вниз (права часть фиг,). Происходит включение пневмомолота в работу путем подачи сжатого воздуха к воздухораспределительному устройству 11. Пневмомолот запускаетс в работу. Ударник 9 наносит удары по хвостовику ударного зуба 7, происходит разрушение породы.When axial force is applied to the sleeve 1 in the top-down direction, the tooth 7 abuts against the rock and acts through the sleeve 4 (5) on the barrel 2, providing a shift of the barrel 2 relative to the launch device 10, which rests on the bar 3 and is shifted down together with the sleeve 1 ( the right part of figs). The pneumatic hammer is turned on by supplying compressed air to the air distribution device 11. The pneumatic hammer is put into operation. The drummer 9 strikes the shank of the impact tooth 7, the destruction of the rock.

В процессе работы при образовании выколов перед зубом 7 последний резко уходит вперед и неизрасходованна кинетическа энерги ударника 9 воспринимаетс втулкой 4(5). После получени втулкой удара от ударника 9 до ее соударени с гильзой 1 происходит взаимное соударение частей втулки 4 (5). При этом энерги удара гаситс при передаче ударного импульса от одной части втулки к другой и обратно, аIn the process, during the formation of punctures in front of the tooth 7, the latter sharply goes forward and the unspent kinetic energy of the impactor 9 is perceived by the sleeve 4 (5). After the sleeve receives a blow from the striker 9 until it hits the sleeve 1, the parts of the sleeve 4 (5) mutually collide. In this case, the impact energy is suppressed when the shock pulse is transferred from one part of the sleeve to another and vice versa, and

Claims

1. A PNEUMATIC HAMMER comprising a barrel movably placed in a sleeve with an internal hammer installed, locked from below by a sleeve that includes a shaft of an impact tooth, an air distribution mechanism and a trigger, characterized in that the sleeve is made of two parts installed with an axial clearance, between which an elastic element is placed, in this case, the sleeve and the impact pulse are smoothed out due to the use of an elastic element. When approaching the sleeve to the sleeve, the shock pulse is significantly reduced. The collision of the sleeve 4 (5) with the sleeve 1 occurs in such a way that the shock load is predominantly perceived by the cylindrical part of the sleeve, since the sleeve 1 is provided with a shoulder and the sleeve rests on the sleeve with almost the entire end surface 14. In this case, the bending moment will be significantly reduced due to the design of the sleeve 1. and also due to the fact that the elastic element 6, deforming, balances

bending moment.

There comes a time when the impact tooth 7 abuts against undestructed rock, brakes and stops. As the excavator continues to operate with a bucket, then

the sleeve 1 is displaced relative to the tooth 7, the tooth 7 again acts through the bushing 4 (5) on the barrel 2 and provides the conditions for continued operation or start of the pneumatic hammer, if the starting device 10 has managed to turn off the supply of compressed air.

When the load on the tooth 7 disappears, for example, when the bucket leaves the bottom, the starting device 10 turns off the power of the pneumatic hammer.

(56) Copyright certificate of the USSR No. 829908, cl. E 21 C 3/24, 1986.

USSR copyright certificate No. 1509524, cl. E 21 C 3/24, 1986.

there is a collar for interacting with

the cylindrical end surface of the lower part of the sleeve, which is mounted with the possibility of axial movement relative to the shaft of the impact tooth.

2. The pneumatic hammer according to claim 1. characterized in that the inner diameter of the collar of the sleeve. Da choose from the ratio

Da Dt + 2g, where Dt is the inner diameter of the sleeve, mm;

g is the radius of mating of the inner sleeve with its end surface, mm.

R

8

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