SU1397275A1 - Percussive pneumatic machine - Google Patents

Description

421) 4080666 / 29-28 (22) 05/05/86 (46) 05/23/88. Bul No. 19

(71) All-Union Design Technological Institute of Foundry

(72) D.I.Antipov, V.V.Suslov, G.N.Gogesashvili, V.D.Ioffe

ti I.Ya.Bapakin

(33) 622.232 (088.8)

(56) US Patent No. 3968843, cl. 173-139, 1976.

(54) PNEUMATIC. IMPACT MACHINE

.ACTIONS

(57) The invention relates to pneumatic percussion machines.

The purpose of the invention is to increase the efficiency of vibration damping and increase reliability. A shock absorber 6 of variable cross-section, made of an external conical spring 7, an internal distal spring 8 with a space between them filled with elastic cellular-porous polyurethane 9, provides a wide range of vibration damping. On the cup 14 there are protrusions 15, an entrance sh into the grooves 16 of the cylindrical body 17 of the handle 2 and intended for fixing the handle 2 from radial movement relative to the cup 14 and the barrel 3. 1 sludge.

$

 13

The invention relates to a machine building}, in particular, to manual mechanized percussion machines, and can be used in various branches of the national household, namely in construction, shipbuilding for cutting metal, stripping welds, cutting off castings, and removing frames. and rods with high residual strength of castings.

The purpose of the invention is to increase the vibration dampening and increase reliability.

The drawing shows a pneumatic impact machine, a longitudinal section in the upper part. I The pneumatic percussion machine contains a cylinder 1 with a hollow handle 2, a barrel 3, a fastening device 4, a working tool 5, an amor 1 (isator 6 in the form of a conical sleeve of a pregnant section, reinforced (with an external conical spring 7 and an internal cylindrical spring 8, the space between which is filled with elastic cellular-porous polyurethane 9. The shock absorber 6 has an axial bore 10, to start the machine stop, there is a starting device 11. The channel 12 is made in ityKOHTKe 2 to supply compressed air to the axial bore 10 am rotator 6. A punch VMK 13 is installed in barrel 3, and a cup 14 is mounted and covered with KoaKCH barrel 3. It has tabs 15 on the cup 14, entry 2 into the grooves 16 of the cylindrical body 1 | 7 of the handle 2 and intended for fixing the handle 2 from the radial displacement relative to the glass 14 and the ytvol 3. The lower damp (| 5iruyuschuyu seal- 1 | the supporting ring 18 absorbs the vibration of the latepH trunk stroke 3.

The pneumatic percussion machine works in the following way.

2

50

0, 5 0

five

five

75 2

Compressed air through launching device 11 through channel 12 through segmental windows (not indicated) enters the air cavity of glass 14, then through the air-distributing device (not specified)) further into the idle chamber and working stroke alternately, causing drummer 13 to perform reciprocating movement and impact on the working tool 5. A shock absorber 6 of variable cross section, made of an external conical spring 7, an internal cylindrical spring 8 with an elastic cellular-porous space filled between them polyurethane 9, provides a wide range of applied forces during the execution of work operations. At the same time, when the springs 7 and 8 are compressed by the shock absorber 6, the polyurethane 9 between the turns of the springs 7 and 8 enhances the damping performance of the shock absorber 6.

Claims (1)

Invention Formula A pneumatic percussion machine containing a barrel, a drummer placed in it, a hollow handle with a cylindrical body, a cup, the latter of which is located coaxially with the barrel and gripped by it, and a shock absorber for interacting with the handle and the cup, characterized in that In order to increase the efficiency of vibration dampening and increase reliability, the shock absorber is made in the form of a conical sleeve of polyurethane foam of variable cross section reinforced on the outer surface of the conical and on the inner surface of the cylindrical dinners, on the inner surface of the cylindrical body made grooves, and on the outer surface of the glass - protrusions placed in the grooves.