SK279860B6 - Device for impacting isolation panels into masonry - Google Patents

Abstract

The device for driving insulating panels into masonry consists of a pneumatically, hydraulically or electrically driven impact hammer (1), the impact piston (2) of which acts, via a clamping jaw (3), on one end face of the insulating panels (4). The clamping jaw (3) is constructed with a shaft (7) which is guided in a guide channel (9) of the impact hammer (1), and with a bill (8) which receives the insulating panels (4). To shorten the overall length of the device and reduce the risk of the tool fracturing, the guide channel (9) in the impact hammer (1) is constructed cylindrical with only a slightly smaller diameter than the impact piston (2), and the shaft (7) has the same diameter, without a step, from the impact piston (2) up to the point of transition to the bill (8) of the clamping jaw (3). In addition, the guide channel (9) is of shortened design, omitting a device for securing the tool against falling out. The impact hammer (1) can be arranged, so as to be horizontally fixed but vertically adjustable, on a chassis (18) provided with wheels (22) and of horizontally extending axis. A pneumatic or hydraulic actuating cylinder (25) is provided for supporting the chassis (18).

Description

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a device for driving insulation boards into masonry by means of a pneumatic, hydraulically or electrically driven impact hammer, the striking piston acting through a spacer formed as a clamping jaw with a shank connected to the striking piston and guided in the striking guide channel of the striking hammer; The plates act on the front side of the insulating plates which are formed of profiled, preferably corrugated plates of steel or hard plastic.

BACKGROUND OF THE INVENTION

A method for drying damp walls is known from AT-PS 335 689, in which hard insulating boards of stainless steel or plastic, which are closely connected to one another, are inserted into the masonry. Insulating boards, which extend through the entire width of the masonry, create a virtually unlimited durable restraint that safely prevents moisture from rising.

For the correct and horizontal introduction of the insulation boards into the masonry, special tools, as well as the expertise and experience of the operating personnel, are required. For this purpose a hammer is used which acts on the front side of the insulation boards via the spacer. In order to safely transfer the energy of the impact to the insulation boards and to hold them during horizontal insertion into the masonry, AT-PS 364 149 discloses a device in which the spacer is designed as a clamping jaw with a shank connected to the hammer strike and holding clip insulating boards. In this case, it is necessary to adapt the shank of the clamping jaw guided in the hammer to the guide channel of the hammer.

Current impact hammers, in particular pressure air hammers, have a guide channel with a generally hexagonal, relatively small cross-section at their insertion end for receiving the tool. Spherical cross-sections of similar dimensions are also rarely used. Indeed, in order to fit into the current guide channels, the shank of the clamping jaws could also be produced only with a corresponding small cross-section. In the case of hexagonal guide channels, an even smaller bearing cross-section of the shank is thus obtained, since it has to be inserted into the hexagonal profile. These facts cause breakage of relatively expensive tools at the point of extension from the shank to the clamp of the clamping jaw or in the area of shank mounting.

These known impact hammers are further provided with a device which secures the tool, inserted into the guide channel, against falling out. The device may be a ball closure in which the spring loaded balls or similar closure members engage the groove of the tool shank or may be a mechanical snap closure which engages the hook or levers of the tool with the hook levers. In another known embodiment, the tool shank is provided with a collar which, at the end of the stroke of the tool, impinges on a head mounted or screwed on at the end of the striking device.

U.S. Pat. No. 2,685,274 discloses an embodiment in which an elastic material collar is fastened to the tool shank, which is intended not only to prevent the tool from falling out, but also to damp its impact at the end of the stroke on the head and the hammer at the guide channel inlet. The tool shank is formed with the same diameter over its entire length and the flexible collar or collar is glued or vulcanized on the tool shank.

The end of the tool shank protruding from the device is formed as an impact chisel. Known hammers are relatively long when using a fall-out device. In particular, the tool shank protrudes through the hammer, which must be of a corresponding length.

It is known from AT-PS 364 150 to place an impact hammer on a support pedestal which is mounted on the masonry in order to push the insulation boards into the masonry. The impact hammer is provided on a bridge which is height-adjustable on the webs and carries a trolley, which can cross the bridge across the direction of insertion. On the trolley there is a driving device mounted on the sledge on which the hammer is mounted. By means of this support frame, the impact hammer can be placed effortlessly and precisely in a position relative to the masonry, which is relatively correct for driving a certain insulating board, so that the insulating board can be accurately inserted into the masonry joint. However, the load-bearing pedestal with a bridge, trolley and sliding carriage requires a relatively large space, which is not available everywhere. The width of the support pedestal is also determined by the length of the hammer that is horizontally mounted thereon.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simplified and substantially reduced apparatus for embedding insulating boards in masonry, which could be used in confined space conditions, for example in narrow corridors, but was robust and versatile to allow safe boarding.

According to the invention, this object has been achieved by a device for driving insulation boards into masonry, comprising a wheeled chassis and a striking hammer arranged adjustable on the chassis, which is driven pneumatically, hydraulically or electrically and whose striking piston is clamped insulating plates made of profiled, preferably corrugated, steel or hard plastic plates, the impact hammer being adjustable in a vertical direction and the chassis can be positioned relative to the masonry by hand or by drive, the principle being that the guide channel of the clamping jaw is designed as shortened without a device to prevent the tool from falling out, and the hammer is firmly mounted on the chassis with the axis running horizontally in the horizontal direction.

The guide channel in the hammer to the shank of the chuck is in a manner known in the art of hammers provided with a device for securing the tool shank against falling out, cylindrical with only a smaller diameter than the striking piston and the shank from the striking piston to the transition point in the chuck has the same the diameter without stepping and the guide channel is made shortened when the device is drained to prevent the tool from falling out.

The embodiment according to the invention makes it possible, firstly, to shorten the tool shank and make it thicker in cross-section, which, together with the same diameter over its entire length, substantially increases its ability to resist

EN 279860 Β6 the risk of breakage is largely eliminated. Due to the bearing of the reinforced diameter tool shank, the guide channel of the impact hammer can be enlarged or drilled in comparison with previously available embodiments. A further advantage is that all tools can have the same shank diameter and can match all hammers, making the bearing arrangement considerably simpler and cheaper.

Further, the tool shank may be shortened away from the larger diameter embodiments so that the insulation board mounting tabs are at the front end of the shank as close as possible to the hammer guide channel to the shank, or immediately adjacent the outboard end thereof. This provides a robust clamping jaw that can withstand, without danger, hard blows, bending stresses and torsion resulting from the use of the relatively wide clamp required to align and guide the insulation board.

Finally, with the shortened design of the striking hammer, an equally important advantage is achieved in that it is also used in confined space conditions, especially in narrow corridors. The shortened hammer can be held and guided manually during insertion. Furthermore, its space-saving design allows the use of a small and simple base for its placement.

An advantageous embodiment of the device according to the invention consists in that it is made of the current impact hammers by shortening, for example by cutting a part of the tool guide projecting through the striking piston and increasing the guiding channel turning, especially in the current hexagonal guides, into a cylindrical shape. In this case, the device for securing the tool against falling out of existing hammers is removed, thereby substantially reducing the overall length of the hammers. This measure makes it possible in a simple and particularly valuable way to make the device according to the invention from a current hammer sold in a shop.

Within the framework of the invention, it is also possible in a suitable manner to make the device such that all guide channels on the clamping jaw have the same diameter irrespective of the size of the hammer, so that the same clamping jaws can be used for all hammers. This results in an overall cost reduction for the production of individual tools, as well as a further substantial reduction in tool holding costs, since all tools fit all impact hammers. Finally, it is also advantageous to extend the tool life by strengthening the cross-section along the total length of the shortened shank. Finally, by shortening the shank, the tools are also lighter, so that the hammer blow energy is better transferred to the insulation boards.

The device according to the invention can be used not only in embodiments in which the shank and the clamping jaw are made in one piece. According to the invention, with the same advantage, it is possible for the shank inserted into the guide channel in the hammer to be separated from the clamping jaw and, with its, preferably slightly conical tapered end, introduced into the recess of the clip with play. In this case, the stem is separated from the clip from the front, which further reduces the risk of fracture, especially at the endangered transition point.

The same effect is practically achieved when, according to one variant of the invention, a connecting sleeve is used in which one end of the shank engages and which, at its other end, is mounted on the clip extension. Here, too, the risk of breakage is eliminated due to the preformed separation.

According to a further embodiment of the invention, the impact hammer, which can be shortened without tool lock, can be fixedly fixed on a traveling pedestal with a horizontally extending axis and provided with wheels, but adjustable in a vertical direction.

This is a simple movable base for a shortened hammer, on which the hammer is mounted only in the vertical direction. In this case, the device is washed, moved in the direction of movement during the insertion of the plates and laterally displaced before the insertion of the new plate by moving the mobile pedestal on its wheels and thus in a particularly simple manner. This operation can be performed manually by one operator. Since no additional hammer shifting devices are required outside the vertical adjustment and the hammer used is short, the mobile pedestal is simple, small and movable so that it can be used practically anywhere, especially under confined space conditions.

According to a further feature of the invention, a pneumatic or hydraulically adjustable roller can be provided on the mobile pedestal by means of which the mobile pedestal with the impact hammer can be moved against the masonry, supporting the adjusting roller against the masonry with an extendable support leg. masonry. This simple attachment serves to reliably support the impact hammer with the tool during the insertion of the plates and in any case also to perform a sliding movement, so that any greater physical effort of the operator is eliminated when operating the device according to the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Further details and advantages will be apparent from the following description of the exemplary embodiments shown in the drawings.

In FIG. 1 is a partial cross-sectional plan view of an existing device for embedding insulating boards in masonry; FIG. 2 shows a section along line II-II in FIG. 1, FIG. 3 shows a device according to the invention, in a view similar to FIG. 1, FIG. 4 shows a section along line IV-IV in FIG. 3, FIG. 5 and 6 show details of tool variants, in cross-section, in FIG. Figures 7, 8 and 9 show an example of an embodiment of the device according to the invention with a chassis for receiving a hammer; 7 and 8 show two variants in side view and FIG. 9 is a partially cross-sectional front view of a mobile pedestal.

DETAILED DESCRIPTION OF THE INVENTION

The device shown in FIG. 1 consists of a percussion hammer 1 provided with a sliding percussion piston 2, which can be driven, for example, pneumatically. The striking piston 2 acts via a spacer formed as a clamping jaw 3 on the corrugated insulating plate 4. At the other end of the striking hammer 1 there is a closing lever 5. The supply of driving air is effected by a pressure hose 6. The strokes drawn by the striking piston 2 are transferred by the clamping jaw 3. onto the insulating plate 4, which is thus blown into the masonry.

The clamping jaw 3 consists of a shank 7 and a clip 8 connected thereto. The shank 7 is formed of a relatively long length, is guided in the direction of the axis in a sliding manner in the guide channel 9 of the hammer 1 and provided with a shoulder 10 in its central part. In the region of this funnel-shaped extension 12, anchoring devices for the connected tool are provided on the current striking hammers, which prevent the tool from accidentally coming out of the striking hammer and falling out.

FIG. 2 shows that the guide channel 9 in the hammer 1 has a hexagonal cross-section and the shank 7 of the clamping jaw 3 in this region must have a cross-section that is smaller than a circle inscribed in the hexagon of the guide channel 9.

In FIG. 1 it can be seen that the shank 7 and the respective guide channel 9, together with the funnel-shaped extension 12, are relatively long, so that the device has an overall relatively long length. This means in practice that a correspondingly large working width is required in order to be able to work with the device without problems. However, the required working width is not available in many houses, for example in narrow corridors, staircases and the like. In addition, the long and relatively thin shank 7 of the clamping jaw 3 tends to break, particularly in the area of the shoulder 10, where notched stresses can be completely excluded.

In FIG. 3 shows an embodiment of the device according to the invention in the same representation as the current device of FIG. Also here, a tool is provided on the striking hammer 1 with the striking piston 2, provided with a clamping jaw 3, the shank 7 of which slides in the guide channel 9 of the striking hammer 1. The funnel-shaped extension 12, connected according to FIG. 1 to the guide channel 9, however, the hammer housing 1 completely falls off and the shank 7 is therefore shorter. The shank 7 therefore has a substantially larger diameter than in FIG. First

As shown in FIG. 4, the guide channel 9 is made cylindrical with only a smaller diameter than the striking piston 2, thereby allowing larger cross sections of the shank 7. The shank 7 is also provided with the same diameter from the striking piston 2 up to the transition point in the gripping jaw 8. 10th

From the current hammer of FIG. 1 may be the impact hammer of FIG. 3 made in a simple manner by cutting off the part of the impact hammer housing 1 facing the clamping jaw 3, thereby substantially shortening the impact hammer 1. It is then only necessary to drill the guide channel 9, which in the present embodiments is generally hexagonal to a cylindrical and as large diameter as possible. The shank 7 of the clamping jaw 3 can then also be shortened and made with a correspondingly larger diameter without the shoulder 10, thereby achieving a substantially mechanical reinforcement and greatly avoiding breakage. In addition, the same tool can be used for all hammers 1, which greatly facilitates storage. The clamping jaw 3 is also relieved by shortening the shank 7, whereby the impact energy generated by the impact hammer 1 is transferred to the insulating plate 4 with a greater degree of efficiency.

In the variant shown in FIG. 5, the clamping jaw 3 is split. The shank 7 inserted in the guide channel 9 in the hammer 1 is separated from the clip 8 of the clamping jaw 3 and, with its slightly conical end 13, is inserted with a clearance into the recess 14 of the clip 8. In the embodiments of FIG. 6, a connecting sleeve 15 is provided, which is provided with a through-pass channel 16 arranged approximately in the middle. In this connecting sleeve 15, a shank 7 extends from one end (shown from left) and the connecting sleeve 15 is mounted on the end 17 of the clip 8. Here, there is a direct mechanical connection between the shank 7 and the clip 8, thereby ensuring a flawless transfer of the impact hammer 1 to the insulated insulation board 4. By dividing the clamping jaw 3 into the shank 7 and the clip 8, the risk of breakage in the transition area is further reduced.

The chassis 18 shown in FIG. 7, 8 and 9, consists of four tubular uprights 19, which are connected to one another by longitudinal beams 20 and cross beams 21 and are provided at their lower ends with wheels 22 arranged in the longitudinal direction of the chassis 18. The bearing brackets 24, 24 'and 24 shown in FIG. 9, an impact hammer 1 and a pneumatic or hydraulic adjusting roller 25 as shown in FIG. 7 and 8. The height adjustment is performed by means of the spindle 26 shown in FIG. 9, which is arranged by means of a crank 27 rotatable in a nut 28. The nut 28 is fixed at the upper end of the adjusting tube 29, inserted concentrically in the tubular web 19, at the lower end of which the wheel 22 is located. to shorten the pipe web 19 and thereby accurately align the impact hammer 1 mounted on the support 23 to the desired height.

The use of the chassis 18 according to the invention can be seen from FIG. 7 and 8. In this case, the chassis 18 is aligned with one of its front walls against the masonry 30 into which the insulating plates 4 are to be inserted horizontally. The insulating plates 4 are held in a clamping jaw 3 whose shank 7, as shown in FIG. 3, it is guided in the guide channel 9 of the hammer 1. At its front end, the insulating plates 4 are directed into the joint 31 of the masonry 30 into which they are to be inserted. Precise adjustment is made by the height adjustment of the chassis 18 by means of the keys 27. The insertion of the insulation boards 4 into the joints 31 is carried out by means of a hammer 1 and by a sliding movement of the chassis 18 towards the masonry 30.

The translational movement of the insulation boards 4 into the masonry 30 can be performed manually by one worker. Since this operation requires a relatively high effort, according to the invention a pneumatic or hydraulic adjusting roller 25 is used for this purpose. 7 via a deflection roller 32, the end of which is suspended by a hook 34 into a pipe 35 which is anchored to the masonry, for example by means of a clip 36. In this simple manner, the sliding movement can be performed by an adjusting roller 25. since the displacement due to the guiding of the rope 33 over the deflection roller 32 corresponds to the double stroke of the piston of the adjusting roller 25.

In the embodiment of FIG. 8, the adjusting roller 25 acts on a support rod 38 which is fastened to it immediately or via a joint 37 and whose free end is firmly supported on the wall 40 by an extended shoe 39. The support rod may be telescopically elongated, for example by apertures provided at certain distances. which are formed in the telescopically engaged parts of the rod and which are connected to each other by a bolt through the openings. Instead of the wall 40, the support rod 38 can also be anchored in the ground with its shoe, for example by hammering reinforcing iron and the like into the ground on which the strut is supported.

In this embodiment, too, the sliding movement of the chassis 18 when the insulating plates 4 are inserted into the masonry 30 is carried out by means of an adjusting roller 25, the possible displacement travel being practically arbitrarily increased by a corresponding extension of the support rod 38. the chassis 18 is pulled either by hand or by reversing the operation of the adjusting roller 25 away from the masonry 30 and offset laterally by approximately the width of the insulating plate 4, after inserting the new insulating plate 4 into the clamping jaw 3.

The description and drawings show that the new device is relatively simple, small in size and easy to operate.

Claims (5)

PATENT CLAIMS An apparatus for driving insulation boards (4) into masonry (30), comprising a bogie (18) with wheels (22) and a hammer (1) arranged adjustable on the bogie (18), which is driven pneumatically, hydraulically or electrically and the striking piston (2) via an intermediate piece formed as a clamping jaw (3) acts on the front side of the insulating boards (4) formed of profiled, preferably corrugated, steel or hard plastic boards, the striking hammer being arranged vertically adjustable and the chassis (18) can be positioned with respect to the masonry by hand or drive, characterized in that the guide channel (9) of the shank (7) of the clamping jaw (3) is shortened without the anti-drop device, and the impact hammer (1) is fixedly mounted on the bogie (18) with the axis running horizontally in the horizontal direction. Device according to claim 1, characterized in that all the guide channels (9) of the clamping jaws (3) have the same diameter regardless of the size of the impact hammer (1), the same clamping jaws being applicable to all the impact hammers (1). (3). Device according to claim 1, characterized in that the shank (7) inserted into the guide channel (9) of the hammer (1) is separated from the clamp (8) of the clamping jaw (3), with its conically tapered end (3). 13) engages with a clearance into the recess (14) of the clip (8). Device according to claim 3, characterized in that it is provided with a coupling sleeve (15), into which one end engages the shank (7) and with its other end mounted on the adapter (17) of the clip (8). Device according to claim 1, characterized in that a pneumatic or hydraulic adjusting roller (25) is disposed on the bogie (18) for adjusting the bogie (18) with the impact hammer (1) relative to the masonry (30), the adjusting roller is opposed to the masonry (30) by means of a support rod (38) or connected thereto by means of a traction device (32, 33, 34, 35) firmly connected to the masonry (30).