SU764971A1

SU764971A1 - Pneumatic hammer

Info

Publication number: SU764971A1
Application number: SU782593034A
Authority: SU
Inventors: Сергей Сергеевич Руделев; Александр Николаевич Курапов
Original assignee: За витель
Priority date: 1978-03-22
Filing date: 1978-03-22
Publication date: 1980-09-23

Description

(54) ПНЕВМАТИЧЕСКИЙ МОЛОТОК(54) PNEUMATIC HAMMER

Изобретение относитс к пневматическим устройствам ударного действи , s частности к рабочему инструменту дл пневматических молотков, и может быть использовано при рубке, клепке, зачистке, пробивке отверстий и дл других операций.The invention relates to pneumatic percussion devices, in particular, to a working tool for pneumatic hammers, and can be used for chopping, riveting, stripping, punching holes and for other operations.

Известны пневматические молотки с рабочим инструментом, один конец стержн которого имеет рабочий профиль, другой выполнен в виде хвостовика дл закрыти рабочей камеры пневматического молотка, имеющего различную конфигурацию 1.Known pneumatic hammers with a working tool, one end of the rod which has a working profile, the other is designed as a shank for closing the working chamber of a pneumatic hammer having a different configuration 1.

К основным недостаткам пневмомолотков относитс непосто нство сечени стержн , выступы и проточки которых вл ютс концентраторами напр жений, уменьшающими врем работы инструмента.The main disadvantages of pneumatic hammers are the inconsistency of the cross section of the rod, the protrusions and grooves of which are stress concentrators that reduce tool life.

Наиболее-близким к изобретению по технической сущности вл етс пневматический молоток, содержащий цилиндр, в полости которого размещен боек, и буксу с рабочим инструментом 2.Closest to the invention to the technical essence is a pneumatic hammer comprising a cylinder, in the cavity of which the head is located, and an axle box with a working tool 2.

Недостатком известного пневматического молотка вл етс его мала надежность и недолговечность.A disadvantage of the known pneumatic hammer is its low reliability and short life.

Цель изобретени - повышение надежности и долговечности молотка.The purpose of the invention is to increase the reliability and durability of the hammer.

Это достигаетс тем, что наконечник рабочего инструмента выполнен в виде клапана , а букса со стороны бойка - с седлом под клапан рабочего инструмента.This is achieved by the fact that the tip of the working tool is made in the form of a valve, and the bush on the side of the striker is equipped with a seat under the valve of the working tool.

На фиг 1-4 изображен рабочий инстру5 мент, размещенный в буксе пневматического полотна, с различной конфигурацией наконечника , выполненный в виде клапана.Figures 1–4 show a working tool placed in the axle box of the pneumatic web, with a different configuration of the tip, made in the form of a valve.

Пневматический молоток содержит цилиндр 1 с камерой 2, буксу 3 с рабочим инструментом , один конец стержн 4 которого 10 имеет рабочий профиль 5, например,лопатку , другой конец выполнен в виде торцового клапана 6, а букса 3 со стороны бойка 7 выполнена с седлом 8, причем, торцовый клапан 6 может быть различной конфигурации - в виде сферы 9 конического клапана 10 круглого сечени (фиг. 3) и конического клапана 11 граненого сечени (фиг. 4).A pneumatic hammer contains a cylinder 1 with a chamber 2, an axle box 3 with a working tool, one end of the rod 4 of which 10 has a working profile 5, for example, a blade, the other end is made in the form of a mechanical valve 6, and the axle 3 is made from the side of the striker 7 with a saddle 8 , moreover, the end valve 6 can be of various configurations - in the form of a sphere 9 of a conical valve 10 of circular cross section (Fig. 3) and a conical valve 11 of a cut section (Fig. 4).

Пневматический молоток работает следующим образом.Pneumatic hammer works as follows.

Claims

The face valve 6 in combination with the saddle 20 8 of the axlebox 3 forms a valve pair, closing the air outlet from the chamber 2 with the striker 7 of the pneumatic hammer. The core 4 of the working tool directly, without step transitions and changes in the cross section. 3764 is inserted into the axle box, which gives it the direction and possibility of reciprocating movements arising from the strikes of the striker 7. Face valve 6 can reliably close the chamber 2 with possible large misalignments of the working tool relative to the axle box 3. The core 4 of the working tool has a significant bias, however chamber 2 is closed by sphere 9 of valve 6, and air does not escape from chamber 2. There are two more options for the specific implementation of the working tool. The embodiment of the working tool with a conic valve 10 of circular section (Fig. 3) is a modification of the previous one and can be used with a corresponding change in the seat 8 of the valve 6 of the axle box 3. An embodiment of the working tool with a conical valve 11 of cut section if necessary fixed installation of the working tool. In this case, the saddle 8 of the axle 3 has a faceted profile that fixes the working tool, clearly limiting its rotation. In this case, the cone is not a guide and is made with an angle of more than 30 °. Performing a pneumatic hammer working tool with a continuously variable end-face valve of various configurations ensures reliable closing of the pneumatic hammer chamber during the working process, and also increases the tool durability by simplifying heat treatment. Claims of the invention A pneumatic hammer containing a cylinder in whose cavity a combat is located and an axle box with a working tool, characterized in that, in order to increase the reliability and durability of the hammer, the tip of the axial tool is made in the form of a valve, valve of the working tool, Sources of information taken into account during the examination 1. USSR author's certificate No. 311739, cl. B 25 D 17/00, 1970.

2. Shikolaeva V.P. Rational construction and technology of heat treatment of chisels for chipping pneumatic hammers. Foundry, № 5, 1976 (prototype).