SU1544548A1 - Arrangement for driving expansion bolts - Google Patents

Abstract

This invention relates to devices for driving dowels. The purpose of the invention is to increase productivity by increasing the speed of the working tool and further increase reliability. In the barrel 2 of the device body, a diametrical partition 9 with an axial bore 10 is divided into two cavities 7 and 8, the working tool 5 is made with a flange 11 and placed in the cavity 8 of the barrel 2 facing the dowel 6, the device is also provided with 8 the possibility of axial movement of the sleeve 12 under the dowel 6 located between the flange 11 of the working tool 5 and the end of the sleeve 12 by a spring 13 placed in another cavity 7 with an axial clearance Δ relative to the working tool 5 by the hammer 14 and connected to it morning barrel surface 2 by the elastic members 15. In the particular case, the ratio by weight of the striker 4 and the striker 14 is selected in the range 1.1-1.2. 1 hp f-ly, 1 ill.

Description

made with a flange 11 and placed in the cavity 8 of the barrel 2 facing the dowel 6, the device is also provided with a sleeve 12 mounted under the dowel 6 located between the flange 11 of the working tool 5 and the end of the sleeve 12 spring 13 placed axially in another

bore 7 with axial clearance &. relative | working tool 5 with a hammer 14 and associated with it and fixed on the inner surface of the barrel 2 elastic elements 15. In the particular case, the mass ratio of the striker 4 and the drummer 14 is selected in the range of 1.1-1.2, 1 C. p. f-ly, 1 ill.

The invention relates to mechanical engineering, in particular to devices for driving dowels, and can be used in construction for driving dowels, nails and other fasteners.

The purpose of the invention is to increase productivity by increasing the speed of the working tool and further increasing reliability,

The drawing shows a device for driving, dowels, cut,

The device for driving dowels includes a housing 1 with a barrel 2, a rotary mechanism 3 with a drive (not shown) and a driver 4 mounted in the barrel 1, a working tool 5 mounted in the barrel 2 with axial movement, for interacting with the dowel 6. In the barrel 2, the diametrical partition 9 with the axial bore 10 is divided into two cavities 7 and 8; the working tool 5 is made with a flange 11 and is placed in the cavity 8 of the trunk 2 facing the dowel 6 of the device 2. The device is equipped with an axially displaced sleeve 8 12 under the dowel 6, installed between the flange 11 of the working tool 5 and the end of the sleeve 12 with a spring 13 placed in another cavity 7 with an axial clearance & relative to the working tool 5 by the hammer 14, connected with the hammer 14 and fixed on the inner surface of the barrel 2 by elastic elements 15. In the particular case, the mass ratio of the striker 4 and the drummer 14 is selected within 1.1-1.2,

The device has a latch 16 and dampers 17 and 18 of the rotary mechanism 3.

Device for driving dowels works as follows.

When the drive is turned on (not shown, rotation of the rotary mechanism 3 begins, which then accumulates kinetic energy. The operator depresses the clamp 16 by unlocking the trigger (not shown) by the centrifugal forces of the rotary mechanism 3 to the periphery of the housing 1. in the direction of rotation of the rotary mechanism 3. Reaching the periphery, the firing pin 4 collides with the striker 14, and the accumulated kinetic energy is transferred to the striker 14, which, moving along the axis of the barrel 2, he imparts a shock pulse to the working tool 5, and he, in turn, hammers the dowel 6 into the base, Bochk 4 after colliding with the drummer 14 and transferring the accumulated kinetic energy to it receives bounce energy and returns to its original position, where the remaining energy is damped by the damper 17. The striker 4 itself is secured by a latch 16, Elastic elements 17, on which the drummer 14 is mounted, allow it to move along

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stem axis 2 and return it to its original position. The gap A provides the free movement of the striker 14 for a time sufficient for the striker 4 to exit the striker's rebound zone of 14 g after their impact. The working tool 5, after driving, the dowel 6 returns to its original position due to the stiffness of the spring 13 and rests against the flange 11 into the rubber damper 18 of the diametrical partition 9, where the recoil energy is extinguished.

A diametrical partition 9, limiting the movement of the working tool 5 in the direction of the striker 14, ensures the constancy of the gap &

In case of incomplete blocking of dowel 6, the operator squeezes the spring 13, contacts working tool 5 with dowel head 6 and makes a repeated blow. Thus, sleeve 2 provides both the extension of dowel 6 and the use of various sizes of dowels 6 "

Claims (2)

1. A device for driving dowels containing a housing with a barrel, a rotation mechanism mounted in the housing connected to a drive and having a firing pin, and a working tool mounted in the barrel with the possibility of axial movement for interacting with the dowel, in order to increase productivity by increasing the speed of the working tool, a diametrical partition with The axial bore, the working tool is made with a flange and is placed in the barrel cavity facing the dowel, and the device is equipped with a sleeve installed in the latter with axial movement under the dowel, installed between the flange of the working tool and the sleeve end with a spring relative to the working tool by the impactor and the elastic elements attached to it and fixed to the inner surface of the barrel. 2. The device according to claim 1, wherein the t-l is due to the fact that, in order to improve reliability, the mass ratio of the striker and the firing pin is selected within 1.1-1.2.