SU1442390A1 - Pneumatic hammer - Google Patents

Abstract

The invention relates to pneumatic hammers. The purpose of the invention is to increase productivity and expand technological capabilities. The cylindrical flanges 21, 22 and 23 are made on the outer surface of the housing 1. The handle 5 is mounted coaxially to the housing 1 with the possibility of axial movement relative to it and has an output radial channel that is connected to the cavity 24. The latter is formed by the housing I and the handle 5 and communicated periodically with channel 6 of the compressed air supply and constantly with the super- and sub-piston chambers. An axial bore 27 is made in the cylindrical protrusion 20, and the hammer is provided with an additional working tool 28 installed in the last working tool 28 and a radially movable annular element 30 installed in the annular cavity 29 between the cylindrical sealing ribs 22 and 23 of the housing- 1. 3 silt. (L

Description

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The invention relates to mechanical engineering, in particular to pneumatic hammers, and can be used to carry out deformed pipe ends of pipe joints in the energy, chemical, shipbuilding and aeronautical industries.

The purpose of the invention is, increasing productivity and expanding technological capabilities.

FIG. 1 shows a pneumatic hammer, a longitudinal section; FIG. 2 is a section A-A in FIG. one; in fig. 3

section bb in fig. one .

The pneumatic hammer comprises a housing 1 with a front 2 and a rear 3 crust, exhaust ports 4 and a handle 5 with a channel 6 for supplying compressed air. In case 1 between. 7 and 3 along its entire length, the sleeve 7 is coaxially mounted with the piston-hammer 8 placed in it and the working tool 9 in the guide 10. The sleeve 7 is sealed relative to the body 1 by sealing cylindrical shoulders 11 and 12, and shown) forms together with the housing 1 oppositely spaced cavities 13 and 14. The cavity 13 by the channels 15 communicates with the over-piston, and the cavity 14 by the channels 16 - with the sub-piston cameras. Cavity 13 and 14, the corresponding holes 17 and 18, made as part of body 1, communicate with channel 6 of the compressed air supply. The front end of the sleeve 7 is in contact with the guide 10 fixed by the front cover 2 of the housing 1. The rear end of the sleeve 7 is provided with a plug 19 with a cylindrical protrusion 20. Seal cylindrical shoulders 21-23 are made on the outer surface of the housing 1. Handle 5 with housing 1 forms a cavity 24 with an output radial END channel 25, running through the cords and filled in the wall of the housing. The cavity 24 is periodically connected with channel 6 of the compressed air supply and permanently with the piston and sub-piston cameras through cavity 26, B the cylindrical protrusion 20 of the plug 19 is provided with an axial hole 27, in which an additional working tool 28 is mounted. In the annular cavity 29J formed by the sealer there are cylindrical ribs 22 and

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23, a radially movable annular element 30 is installed. The handle 5 has a cover 31 and is spring-loaded with respect to the sealing spindle flanges 23 and 21, respectively, by springs 32 and 33. Each working tool 9 and 28 is supported by a flange 34 located in

Q CAPACITIES FOR 7, and thrust washer 35 for spring elements 36 and 37. The thickness of the support flange 34 is 1.5-2 times smaller than the distance between channels 16 or, respectively, channel 15. Support flange 34 can be made either in one piece with the tip of the working tool 9 or 28, or removable. To simplify the construction of the hammer, the plug 19 and the guide 10 are made identical. The exhaust ports 4 of the housing 1 are connected to the cavity of the sleeve 7 by a groove 38 formed on the outer surface of the housing 1 and a radial hole 39. The exhaust port in the wall of the handle 5 is made in the form of a channel 40 and connects the cavity 26 to the atmosphere. The grooves 41 and 42 of the handle 5 provide power to the cavity 24 and the annular cavity 29 with compressed air. The housing 1 is provided with a means 43 for measuring the mixing values of the handle 5. This means 43 can be executed in the form of measuring the outer surface of the housing 1. The pneumatic hammer works as follows

A pneumatic hammer is connected to the compressed air source (not shown) and pressing the handle 5 or the housing 1 aligns the groove 42 with the annular cavity 29, and the displacement of the handle 5 is controlled by means of the measurement of the displacement of the handle 5, 43 channel 6 and groove 42 enters the annular cavity 29, from which, through the aachor between the housing 1 and the annular element 30, the calibrated bore 18, cavity 4 and then through the brown channels 16, it enters the sub-piston cavity of the sleeve 7, under the action of excessive pressure and compressed air, the piston-hammer 8 is accelerated and its radial bore 39 opens with its rear end making an exhaust. Due to the accelerated motion of the piston-hammer 8, compressing the ball, the air in front of him, nano0

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Sit blow to the working tool 28. At the same time, under the action of compressible air in the cavity 13, a radial reversal of the annular element 30 occurs with the opening 18 and the opening 17. 17. Compressed air from the annular cavity 29 through the opening 17, the cavity 13 and further through the light gray channels 15 enters the sub-piston cavity of the sleeve 7. Under the action of compressed air, the nopDieHb-impactor 8 reverses, when opening the rear edge of the radial hole 39, makes an exhaust, and then, overcoming the resistance of the compressed air, causes hitting the working tool 9.

Under the action of compressed air, a radial reversal of the annular element 30 occurs, the opening 17 closes and the opening 18 opens, after which the known working cycle automatically repeats. And work is done on the deformation of the ends or on the depth of the working tool5, for example, into the cavity of the pipe.

At the end of the work to remove the working tool 9 or 28, the groove 4 i is aligned with the cavity 2A by displacing the handle. 5 relative to the casing I. Compressed air through the output radial channel 25 and the cavity 26 enters under the supporting flange 34 of the working tool 9 or 28, acts on the latter and removes it.

When removing the force on the handle 5, the latter automatically springs

Claims (1)

Invention Formula Pneumatic hammer containing case with exhaust holes, front and rear covers fixed on it with duct dp of compressed air supply, sleeve installed in the case with sealing cylindrical collars and radial points, the walls of which have a cavity formed with the piston chamber and the channel dp compressed air supply fixed on the sleeve a cap with a cylindrical protrusion installed in the sleeve with the possibility of axial movement and dividing it into a sub-piston and sub port chamber cam piston and A working tool, characterized in that, in order to increase productivity and expand technical capabilities, sealing cylindrical collars are made on the outer surface of the housing, the handle is mounted coaxially to the housing with the possibility of axial movement relative to it and has an output radial channel passing through the cavity formed by the body and the handle is connected periodically with the compressed air supply channel and permanently with the super-piston and sub-piston chambers, in a cylindrical stand The axial opening is not made, and the hammer is equipped with an additional working tool installed in the latter and a ring element moving in the radial direction, 32 and 33 returns to the initial position in the cavity between the seal, the channel 40 is aligned with the cavity 26 and the exhaust comes out of it, after which the hammer is ready for operation. body cylindrical shoulder, body. new in the cavity between the seals body cylindrical shoulder, body.