SU946912A1 - Pneumatic single-impact hammer - Google Patents

Description

(St) PNEUMATIC AUDIO HAMMER

The invention relates to pneumatic percussion mechanisms and can be used in construction and installation work. A pneumatic single-hammer is known, comprising a housing with a differential piston-hammer barrel installed in it, having a calibrated orifice that connects over- and sub-piston cavities. The disadvantages of the well-known pneumatic single-hammer are the large size and inconvenience of operation. The closest technical solution to the proposed technical essence and the achieved positive effect is a pneumatic impact hammer, comprising a housing with a handle fixed in it in the front part of which a sleeve with a working tool and a pneumatic valve is placed, and in the rear part a shock-absorbing a chamber, and a barrel-mounted hammer with a head facing a / -1 sorting chamber 2. The disadvantage of this pneumatic single-impact hammer is low impact energy. The purpose of the invention is to increase the impact energy. This goal is achieved by the fact that the pneumatic single-impact hammer is equipped with a two-arm lever, a pneumatic cylinder with a spring-loaded piston and a pneumatic distributor diametrically located on the handle, and the piston of the pneumatic cylinder is made with an annular groove, which includes one end of the two-arm lever, the other shoulder of which is made in the form of a latch interacting periodically with the head of the hammer and with a channel that communicates the piston cylinder over-piston cavity with a shock-absorber chamber with which the pneumatic distribution is associated itvl, and the latter is connected merez pus39

claw valve and air duct with pneumatic valve.

The drawing schematically shows a pneumatic single hammer, hammer, slit.

A single-impact pneumatic hammer comprises a housing 1 with a handle 2, a barrel 3 fixed in it, in the front part of which a sleeve k is fixed with a working tool 5 and a pneumatic valve 6, and in the rear part there is a shock-absorber chamber 6. In the barrel 3 there is a hammer 8 with a head 9, facing the depreciation chamber 7. On the handle 2 the pneumatic cylinder 10 is diametrically located with a piston shaft 11, a spring 12 and a piston 13 which is made with an annular groove k, which includes one end 15 of a double-arm lever, the other end of which is made as lye 16, interacting with the head 9 Udarnik 8, and channel 17, communicating the over piston cavity 11 of the pneumatic cylinder 10 with the damping chamber 7, and the pneumatic distributor 18, which is connected to the pneumatic channel 6 through the starting valve 19 and the air duct 20 , in which on the axis 22 a double-arm is mounted.

The handle 2 has a starting lever 23 with a rod 2 interacting via a pusher 25 with a starting valve 19 interacting with a power source (not shown) through the input channel 26 and the output channel 27. To dampen the impact during the reverse stroke of the striker 8 in the shock absorber chamber 7 is provided with a spring 2B.

Pneumatic single hammer works as follows.

Compressed air from the power source through the inlet channel 26 enters the pneumatic distributor 18, and then through the duct 20 into the barrel 3 under the hammer 8, which is pressed in the initial position by the latch 16 of the two shoulders. Pressing the working tool 5 opens the pneumatic valve 6 and the pressure is released under the hammer 8.

When you press the starting lever 23, the rod presses on the pusher 25 and opens the starting valve 19. Compressed air through channel 21 enters the damping chamber 7, and through the annular groove and channel 17 of the piston 13

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Piston cylinder piston cavity 11. When the pressure increases in the cylinder cylinder 10, the piston 13 moves downward, turning the double-arm lever 15. When the calculated pressure value is adjusted by the spring 12, the latch 16 will be disengaged from the head 9 and the hammer will accelerate.

After the strike, the starting lever 23 is released, the starting valve is closed, and the working tool 5 returns to its original position, while the pneumatic valve 6 is closed, and the compressed air that enters the drummer B returns it to its original position. Air from the depreciation chamber 7 and the pneumatic cylinder 10 through the channel 27 of the pneumatic distributor 18 enters the atmosphere, and under the action of the spring 12 the piston 13 and the double-arm lever 15) and hence the latch 16 together with the drummer 8 will also occupy the initial position.

The process then repeats.

Performing a pneumatic single-impact hammer in accordance with the claims will significantly increase the impact energy, which will increase the efficiency of the hammer as a whole.

Claims (1)

Invention Formula A single-impact pneumatic hammer comprising a body with a handle, a barrel fixed in it, in front of which there is a sleeve with a working tool and a pneumatic channel, and in the back part a shock-absorbing chamber, a hammer mounted in the barrel with a head facing the damping chamber, characterized in that In order to increase the impact energy, it is equipped with a double-arm lever, a pneumatic cylinder with a spring-loaded piston and a pneumatic distributor, which are diametrically located on the handle, while the pneumatic cylinder piston is made with ltsevoy groove, into which enters one end of a two-armed lever, the other arm of which is designed as a latch, periodically interacting with the impactor head, and channels communicating with the air cylinder above the piston cavity damping chamber, with which is associated valve,