SU1411130A1 - Pneumatic single-hit hammer - Google Patents

Abstract

This invention relates to pneumatic single-impact hammers. The purpose of the invention is to increase work efficiency by increasing the impact energy. The hammer has an energy accumulator in the form of a piston 9 spring-loaded in the axial direction and placed in the above-piston chamber 3 and rigidly connected to the rod 10. On the latter, the piston-9 restriction 11 moves to interact with the cover 7. by compensating for the drawdown of pressure when the striker 5 moves to the lowest position, i.e. at the working course. 1 il.

Description

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The invention relates to a machine building, in particular, to pneumatic single-impact hammers, and may be used for riveting, core cutting, and branding.

The purpose of the invention is to increase efficiency by increasing the impact energy.

The drawing shows a pneumatic single hammer with a hammer in the upper position, longitudinal section. .

Pneumatic one; arnsh the young current contains body 1 with a cavity in which the working tool is placed

2 and dividing the cavity on the piston

3 podporshnevuyu 4 cameras drummer 5, the latter has a latch 6, on the case 1 a cover 7 is fixed, 1 is a through-hole, Haicomf is installed in the piston chamber 3 in the form of spring-loaded | 1 spring 8 in the axial direction of the lorshny 9, which is rigidly connected with the rod 10, the rod 10 passes through

: the nail hole of the key 7 and on it is installed a stop 11 of the piston 9, which also interacts with the cover 7, In the case 1 they have channels 12 and 13 connected to the air distribution mechanism

{BPM) 14.

I Pneumatic single hammer works as follows.

I Before the operation of the hammer, the hammer 5 1 | 1 is in the lowest position as the piston 9.

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: After supplying the gaseous medium with dd iodine pressure through the BPM 14 and channel 13 into the podporshnevek chamber 4, the firing pin 5 lod, by the action of the gaseous medium under pressure from the front piston chamber 4, moves to the upper extreme position limited by the latch 6, where the latter before the cycle begins ..,

At the same time, the over piston chamber 3, through the channel 12 and the BPM 14, communicates with the atmosphere, and the piston 9 under the action (the spring 8 is in its extreme position, limited by a relay 11.

Dp start the hammer you need to move the handle BPM 14, while podporshaeva camera 4 through ka-Nal 13 and BPM 14 is connected with the atmosphere, and the gaseous medium under pressure .. 150

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five

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By means of BPM 14 and channel 12 begins to flow into the over piston chamber 3. As the gaseous medium enters under pressure into the over piston chamber 3, the piston 9 begins to move to its extreme upper position, compressing the spring 8 limited by the cover 7. As soon as the pressure in the over piston chamber 3 reaches a certain value, the striker 5 is released, and it starts moving to the lower position.

At the same time, due to the abrupt start of the movement of the striker 5, a pressure drawdown begins, which immediately begins to compensate. The energy storage device, i.e. a piston 9 which, by the action of the spring 8, moves to the lower position. As the pressure drops in the above piston chamber 3, the piston 9 tends to maintain the original volume and pressure in the above piston chamber 3. This reduces the pressure drop in the above piston chamber 3 during the start of the hammer 5 and increases the impact energy. At the end of the stroke, the drummer 5 strikes the end of the working tool 2, which in turn performs work. At the same time, the gaseous medium from the piston chamber 4 through channel 13 and BPM 14 is exhausted to the atmosphere.

Claims (1)

To bring the hammer to its original position, it is necessary to move the BPM 14 handle to another extreme position, with the over-piston chamber 3 through the channel 12 and the VIR 14 communicating with the atmosphere, and the shock 5 under the action of the gaseous medium under the pressure entering the piston chamber 4 through BPM 4, the channel 13 is moved to the extreme upper position limited by the latch 6, where it is held last until the beginning of the cycle, the claims of the invention A single-impact pneumatic hammer, comprising a housing with a cavity, a working tool placed in the latter and dividing it on the above-surface — the hammer and the piston chamber — the hammer, the hammer lock, the cover attached to the end of the housing, and the air-distribution mechanism, which differs in that the goal of increasing operational efficiency by increasing the impact energy, it is supplied with energy storage in the form of 314111304 spring-loaded in the axial direction and the stop of the piston movement, and placed in the above-piston chamber mounted on the rod for taking the piston from the rigidly connected with the rod, the action with the cover.