DE202007001861U1 - Device for removing glued-on carpet from floor, comprises small return drum at rear end of frame - Google Patents

Abstract

The carpet (100) is first cut into strips of a suitable size. The front of the strip (100) is manually lifted from the floor (210) and guided around a small return drum (13,40) at the rear of the device (10). When the device (10) is horizontally moved along the floor (210) the strip (100) is guided by a thin elastic metal element (42) around a larger drum (14,30) moved in the direction opposite to the return drum (40) by a an electric drive (35,36) accommodated inside. The drum (30) is covered by a friction layer (31) holding the carpet (100) while being moved towards a spiked deflecting area (50).

Description

The The invention relates to a device according to the preamble of the claim 1 for removing glued flexible flooring such as carpet or PVC flooring, wherein the flooring is optionally first through Cutting into strips of suitable width parts, each strip beginning then detached from the ground and the device supplied and the flooring strip then by pulling the device on the previously detached part of the flooring strip is further removed from the floor, with a frame, on which a support means for supporting the device on the Flooring, a deflection on the floor covering for deflection the flooring strip and a traction means for pulling the flooring strip so are arranged so that when pulling on the flooring strip a detachment by the traction means the flooring strip from the ground and a propulsion of the frame results.

Such a device is for example from the US 5,415,725 A known. This device is used for removing carpets and has a frame on which a separating knife for detaching the floor covering and at least one rotatable guide roller are arranged, wherein the floor covering detached from the floor is non-slip deflectable about the guide roller.

Another such device is known from DE 200 05 875 U1 known. This device is used to remove floor coverings such as PVC coverings and carpets and has a frame on which a deflection means in the form of at least a first rotatable, lying on the ground guide roller for the deflected by this flooring and a support means are arranged, which of Deflection roller is formed together with at least one second guide roller and preferably a support roller. The device further comprises a traction means, which is at least formed by the guide roller and a pressure roller and preferably additionally by a further guide roller with auxiliary roller and a deflection belt, pressure and auxiliary rollers looping around the drive belt. In this case, the pressure roller presses the flooring strip on the guide roller and thereby fixed by the additional drive belt slip, so that when pulling on the flooring strip by rotation of one of the rollers due to their drive by a motor and their coupling through the drive belt results in a propulsion of the frame , As a release agent for the separation of the flooring strip from the ground, the device has a fixed to the frame and pointing in the direction of advance cutting knife, the cutting edge scraping above the ground so that the cutting blade is pressed during propulsion of the frame continuously between the floor and floor and by its cutting action the floor covering detached from the ground.

Furthermore, from the DE 101 06 730 B4 a device known to the opposite DE 200 05 875 U1 as an additional feature having a hold-down, which is arranged at a distance of about one and a half times the thickness of the floor covering above the cutting edge of the separating knife and preferably in the form of a rotatably mounted roller, whereby the floor covering led in a favorable for propulsion angle to the guide roller becomes. In one embodiment of this device Vorrich is from the DE 200 05 875 U1 known arrangement of rolls tilted such that the device rests on the ground only with the first guide roller and the separating knife.

Although it is possible by means of the known devices, which are used in practice mainly in PVC and similar coverings, remove a floor compared to tearing out by hand with relatively little physical use, but the embodiments described by the large number of rollers used, separating knife and other resources required in their dimensions relatively large. For example, in the embodiments of the DE 101 06 730 B4 the distance between the cutting edge of the cutting knife located at the front of the device and the rear end of the device is greatest; at the in the DE 200 05 875 U1 described embodiment, however, both the distance between the lying approximately in the middle of the device between two guide rollers cutting edge of the cutting blade and both ends of the device is relatively large. Therefore, the detachment of the floor covering in a room, as desired for rational work, not already in the immediate vicinity of the room, but begin at a more or less large distance from the wall. The so not accessible to the device, remaining space side must then be processed in a corresponding further operation. In a device according to DE 200 05 875 U1 , in which the cutting knife is located in the center of the device, can even be worked only up to a relatively large distance in front of the opposite wall.

All these devices working with separating knives have in common that they are not functional without a powerful cutting knife. Their performance is mainly determined by two properties, namely the size of the driving force generated, which presses the separating knife between the floor and floor covering, and by the quality of the separating knife, the adhesive layer between the floor and flooring - this only in the ideal case, in practice also parts of the flooring itself as well as often existing irregular ones Ground surveys - severed. The embodiments of these devices are therefore designed so that these two properties mentioned are optimized. Now, for example, the propulsion force is optimized by the fact that the tensile stress induced in this by the pulling on the flooring strip generates the greatest possible propulsion force, which is sufficient for a regular detachment of the flooring strip even at a degraded by wear quality of the separating knife. This is precisely the case if this tension itself is as large as possible, and if, on the other hand, its component acting in the advancing direction is as large as possible, ie if the angle between this component and the advancing direction is as small as possible at the cutting edge of the separating knife. This requirement is for example in the DE 200 05 875 U1 characterized in that the diameter of the immediately before the separating knife arranged deflection roller is relatively large, in the embodiments of the DE 101 06 730 B4 in that is guided by the hold-down of the floor covering in a favorable for the propulsion, small angle to the guide roller. However, both optimization methods lead to a fundamentally disadvantageous large design.

The second of these properties is optimized by that the sharpness the cutting edge of the cutting knife always by their special design, their material or, if necessary, guaranteed by replacement on the other hand, that, for example, multiaxial stored individual dividing knives are provided for cutting into irregular soil elevations and minimize parts of the flooring. A cutting knife, whose Goodness not would be optimized in this way would be one blunt, no more cutting edge - or in extreme cases completely missing - cutting knife equivalent. But because the desired maximum propulsive force to consequence that has the component acting perpendicular to the ground in the flooring strip induced tension is small, this too, deliberately weak separation force is not enough to the flooring strip without detaching the separating function of a separating knife from the ground. Much more is in such a case, the braking effect of such an ineffective Separator on the propulsion so large that the device for Standstill can come and their task is no longer fulfilled. The Optimization of the cutting knife sharpness thus leads the detrimental need for frequent replacement of a wear part.

A Another disadvantageous consequence of these devices with Separating blades required high tensile stress in the flooring strip, that to initiate this great Force corresponding powerful Funds must be available to deflect the flooring slip-proof around the guide roller. A special training of the surface the guide roller by spikes, nubs or the like or by a non-slip coating alone is not sufficient to non-slip the flooring around the - driven - diverting, but only has supportive Effect. Rather, the embodiments require said Devices that these agents as a pressure roller and preferably additionally by a further deflection roller with auxiliary roller and a deflection, Pressure and auxiliary rollers wrap around the drive belt are formed have to, around the required big one To be able to initiate tensile stress slip-proof into the flooring strip. Of the Required high contact pressure of the pressure on the guide rollers also generates a considerable one additional Deformation work in the material of the flooring, creating the required effort the drive motor is further increased.

The Variety of used rollers and other means and to the desired arrear supersede of the flooring required elaborate cutting knife to lead to an elaborate Construction with particularly high production costs. The on scraping the floor scraping blades are exposed to high wear and require the replacement of appropriate additional time, assembly and Procurement costs. The known devices are relatively heavy and unwieldy both in the actual work process, for example when changes become necessary and corrections of the propulsion direction as well as the transport to and from the workplace. The high weight of these devices in turn reinforces the requirements for the applied driving force, which the total weight over the previously required level further increased becomes.

By the P 23 00 668.0 yet another device is known at which can be moved between the floor and the floor covering. and forth swinging, designed as a separating knife plate available is. So here's the otherwise necessary lifting an already detached flooring strip deleted by hand, is a traction means in the form of a driven spiked roller, the a pressure roller and a Leitkör by are assigned, arranged such that an already detached flooring strip of the spikes are taken and lifted off the ground.

Although this device is also suitable for detaching flooring in moderate physical use, however, it lacks an effective force component in the advancing direction because of the design-related vertically upwardly acting lifting of the floor covering strip. Therefore, the propulsion must here manually, so with additional Kraftauf wall, be accomplished, whereby when working with the device, the speed of propulsion fails in practice only very uneven. In contrast, the motor-uniform drive of the spiked roller therefore usually does not lead to the desired, non-slip transport of the flooring strip through the device, but to speed differences between the spines and the flooring strips grabbed by the spikes, resulting in both a higher wear of the spines and causing frequent slitting and partial or total tearing of the flooring strip, resulting in unwanted correction and rework, dust and noise. In addition, the regularly detached and coming out of the spiked roller flooring strips from the front end of the device is discharged approximately vertically upwards, so that he finally has to be taken again by hand and stored controlled. This device is structurally complex, relatively large in size and in particular by the formation of the separating knife operated as a motor reciprocating plate relatively heavy. As a result, it also has the same for the devices according to DE 101 06 730 B4 and DE 200 05 875 already described disadvantages in terms of efficient operation, wear of the cutting blade, high production costs, relatively high weight and limited manageability.

It It has been found that in devices working with a separating knife the use of motor-driven reciprocating and oscillating abutting Breaking blades the efficiency Such devices usually improved significantly. In the Practices are therefore almost only with such, sometimes even electro-hydraulic operated separating knives equipped and used as a "stripper" devices used. This mode of operation together with the relatively high weight of the device leads however also to considerable vibration of the device, not just the manual Make it difficult to work with the device and generate dust and noise and doing physical impairment cause, but also transferred to the processed floor and entire building parts in noise and vibrate. This significant impairment the environment leads in practice, that these devices can be used in hospitals, nursing homes, Offices etc. hardly or at most only at times outside normal business activity be used. This is true even for the less severe so-called "hand-stripper", in which the propulsion and the directional control exclusively manually with considerable physical Use must be made. This is in practice in particular at carpeting relatively common the covering strip cuts, interrupting the flow of work.

Furthermore, from the DE 298 10 100 U1 a device is known, which has a frame movable on rollers, on which a lining removal device is arranged, which comprises a rotating roller. At the device - as well as in the previously described devices - flooring tilts a cutting device is arranged with the strip during the propulsion of the flexible flooring a strip is separated, which was previously manually attached to the recording shaft formed as a roller of the device and by motor drive wound on the roller. By winding a detachment of the flooring from the floor and a feed of the entire device is achieved. The take-up shaft must be repeatedly removed manually from the device, before each of the provided by the constructively selected height of the roller above the ground winding volume is exhausted. By shifting the appropriately shaped halves of the take-up shaft, their overall diameter decreases, and the wound up flooring can be removed manually.

Although it is also possible with this known device to remove a floor covering with relatively little physical use, and a worn with wear, scraping on the floor separating knife as in the aforementioned known devices is not needed here. However, the take-up shaft must be arranged relatively high above the ground in order to provide a sufficiently large winding volume for efficient work. Because of the lack of additional design measures such as a deflector arranged at the bottom but the position and shape of the tear-off or detachment line of the flooring strip from the ground is not set sufficiently accurate. This has the consequence that, for example, first vertically upwards to the roll extending Bodenbelagsstreifen the rotation of the roller on the frame causes no force component in the advancing direction, so that although the tearing of the flooring strip begins, the frame but initially remains at rest. As the roller rotates further, the advancing direction of the tear-off or detachment line results in an increasing driving force, but the frame still remains at rest until the resulting driving force overcomes the friction between the rollers of the device and the possibly soft floor covering. Therefore, the cover strip tears when winding initially a relatively large distance in the direction of advance from the ground, before the device suddenly moves in the direction of advance. As a result, however, as a result of the constant rotation of the roller, the tensile stress in the flooring strip and thus the propulsion force again decreases sharply, so that the forward movement of the device suddenly back to Erlie comes. This jerky movement continues during the winding continues and causes in addition to the frequent leaving behind pelvic remains on the ground in addition larger and not manually controllable directional fluctuations in the propulsion of the device. These continually accumulating directional variations, exacerbated and uneven due to the rollers of the apparatus standing on one side on the bare floor and at the same time on the floor, require increased attention and more frequent direction control intervention when working with the apparatus , In addition, insufficient directional stability of the device results in that the width of the flooring strip to be removed must be made significantly smaller than the actual winding width available to avoid any jamming of the flooring during axial migration of the wound flooring strip from the rotating roll during winding , which in turn reduces the otherwise possible workload. Also, in this device, the workflow must be interrupted frequently to remove the flooring cover from the take-up shaft before it reaches its maximum possible diameter, and finally - unlike the previously described enclosed devices - the removed floor covering roll must be secured against unintentional partial rewinding ,

All in all let yourself So notice that the previously known self-propelled Devices for removing flexible flooring, which the detached Lay down flooring strips behind you, a variety of rollers and other components for the propulsion and sometimes complex and vibrating cutter for the detachment need, resulting in high production costs, great weight, low handiness, additional Time, assembly and procurement costs for wearing parts, restrictions rational operation due to unfavorable size as well to dust, noise and vibrations. Other devices, which the flooring strip in their interior to wind up, have an unfavorable Driving and detachment behavior with thereby caused larger directional fluctuations in propulsion and an elevated Time required for repeated disposal of the wound up flooring strips.

The Invention therefore has the task of an initially mentioned Device in such a way that they the disadvantages of the described Prior art avoids and a lighter and more efficient Work on detachment of floor coverings allowed. In particular, the interaction of support, deflection and traction devices with the goal of lower complexity, higher efficiency and lower Dimensions improved to be designed. Both for the propulsion the device as well as the the detachment of the flooring strip needed Power of the drive motor should be minimized. The dimensions, especially in the direction of advance, and the weight of the device should be minimized and their handiness increased. The at the state of Technology remaining, due to the processing by the device their size inaccessible Edge area of the space to be processed should be as small as possible. The number the rollers used and other means and the use wear parts, especially of cutting knives, should be limited as possible and As a result, the production and operating costs are reduced. Fluctuations in direction and speed of propulsion Device should as possible small and sufficiently good and easy to control. Finally, should also minimizes the environmental impact of dust, noise and vibration become. Overall, so should the new device at lesser complexity be smaller, lighter and more manageable and allow for more efficient work.

The solution These tasks arise from the characteristics of the characterizing Part of claim 1. Advantageous developments of the invention emerge from the dependent claims.

The The invention relates to a device for removing glued flexible flooring of the type mentioned and is characterized characterized in that the deflection means of the device has a diameter from at most has a small multiple of the thickness of the floor covering and is arranged so that it with respect to the direction of advance the rear end of the frame approximately closes, the traction means of the device by exactly one mounted in two side plates and with an adhesive partially covered draw roll is formed, wherein the draw roll with Adhesive has a diameter of a small multiple of the diameter of the Has deflection, if possible is arranged close to the deflection and with the direction of advance seen rear end of the frame about completes, the adhesive of the tension roller the deflected by the deflection of the device flooring strips at its back recorded, holds non-slip and during rotation of the tension roller, pulls around the tension roller, and a deflector disposed in the frame after the flooring strip after about half a turn of the draw roller from the draw roller again detaches and the flooring strips released by her behind loose the floor of the room.

In the intended operation of the first manually detached from the ground and the deflecting means around the device supplied free Detected at the beginning of the flooring strip in contact with the adhesive of the tension roller on its back, and pulled around the latter during rotation of the tension roller, this pulling the device on the previously detached part of the flooring strip this further detached from the ground and the device in a straight line, is smoothly and smoothly moved forward. While the flooring strip is located on the tension roller, it is on its upper side loaded by a guide means in the form of a resilient sheet with at most low pressure, secured and guided on a portion of the distance from about the draw roller to about the deflector against irregular behavior. After about half a turn of the draw roller of the flooring strip with its bottom abuts the deflector, which separates the flooring strip from the draw roller again, so that the now released flooring strips discharged from the device and is stored behind her for later disposal loose on the floor. Knife edges on the deflector for separating any remaining thread bridges between detached and remaining on the ground floor covering contribute to trouble-free operation.

The Deflection means and the tension roller are arranged with respect to the bottom plate so and their diameters are dimensioned so that the dimension of the Device in the drive direction as small as possible and at the same time both for the detachment the bonded floor covering as well as the energy required for propulsion is minimized. Characterized in that the adhesive of the tension roller the flooring strips non-slip holds and in the motor-driven rotation of the tension roller to this pulls around without further action creates a propulsive effect Tensile stress in the flooring strip. This tension is through the deflection almost horizontal in the still fixed to the ground glued portion of the flooring strip initiated, so such that their effective force component maximizes in the advancing direction acts and the device then pulls forward on the floor covering.

The Invention provides that the frame a bottom plate and two Having side plates in which the deflection means and the traction means, the latter in the form of a single, rotatably mounted in the side plates and an adhesive-covered draw roller are arranged. Around with the detachment of the Starting flooring on a wall becomes a relatively short, about the diameter of the deflection corresponding piece of the flooring strip manually detached from the ground and around the deflection means with the back against the tension roller placed. It is advantageous that the deflection and traction means with the rear end of the frame relative to the direction of advance complete it and as possible lying next to each other. Therefore, the space is above the be detached Flooring strip for the operator freely accessible, so he for the laying of the flooring strip does not further the device from the wall needs to remove it as required at the low Length of the previously detached Part of the flooring strip is required anyway. Therefore can with the inventive device with the detachment of the flooring in a room already started near the wall be as it is desired for rational work.

It recommended, on the opposite Side of the room to make a manual cut in the flooring, parallel to the wall at a distance slightly larger than the length the device is in the advancing direction. Reach the detachment line the device this cut, the propulsion stops immediately. The device remains standing on the previously separated part of the floor covering, even before she touches the wall, and put the rest of the inside still circulating flooring strip behind him. It is advantageous that the dimension of the device as far as possible in the direction of advance is designed small, so that the remaining, still glued flooring strips as possible is narrow to him afterwards possibly also by hand if possible easily peel off to be able to. Likewise, it is advantageous if the device over the deflection means, tension roller, managerial and deflector formed to receive a flooring strip maximum width designed strip channel side as possible little stands out, as well as possible near the wall of the room a strip of flooring running parallel to it supersede to be able to.

at an embodiment the invention is provided that the support means of the device by the low-friction bottom of a rounded front edge having Base plate and the directly on the floor covering resting part the deflection is formed. To a particularly simple construction To obtain the rear end of the bottom plate so as a deflection be designed that it is roughly semicircular and rounded with a low-friction surface is provided.

To reduce the friction losses when deflecting the flooring strip around the thus designed bottom plate another embodiment is advantageous in which the deflection of the device is formed by a friction in the side plates rotatably rotatably mounted guide roller with sufficient bending stiffness, which is located directly at the rear end of the frame. This deflection roller lies with its lateral surface on the glued to the floor of the room flooring and forms so together with the low-friction Un terseite the bottom plate, the support means of the device.

at a further embodiment it is provided that the deflection means formed by a guide roller whose diameter is about equal to or slightly larger than the thickness of the bottom plate is. She is in the direction of advance Seen behind lying end of the bottom plate friction rotatable stored and supported, taking it from the end of the bottom plate about half a diameter protrudes out and with its lateral surface at least almost on the Flooring rests. It is against falling out by additional Storage secured in the side plates. This type of storage has the advantage that the flooring strip friction around a Guided deflection roller around being a smaller - and with it, as later is performed, more favorable - diameter as a friction in the side plates rotatably mounted guide roller having the required high bending stiffness. For such Deflection roller is omitted, although it is also loaded in operation in the direction of advance, the otherwise existing requirement for high flexural rigidity, as they are at full Length through supported the bottom plate becomes.

to further reduction of friction losses it is advantageous as support means the guide roller and a similar her Provide roller, which is arranged on the front part of the frame and is also rotatably mounted in the side plates friction, and those with their lateral surface rests on the flooring, in which case the bottom plate itself is not rests on the floor covering and thus causes no additional friction.

considerations and trials have shown that it requires little effort to detach the flooring strip is advantageous when the diameter of the Deflection possible small and at most is a small multiple of the thickness of the flooring. In this Case will happen already a short distance behind the detachment line, ie the contact point the lateral surface the deflection roller on the flooring strip reaches that when tearing the Flooring strip from the bottom resulting adhesive threads their reach maximum length and completely afterwards tear off. Since the expended for stretching these adhesive threads deformation work in a rough approximation depends on the total volume of the resulting and not yet torn off adhesive threads This deformation work and thus the total to replace the Required flooring strip Energy consumption, including the power required by the engine required for the drive minimized. It should be noted that with decreasing Although the diameter of the deflection reduces the force required for adhesive separation on the other hand but the additional applied deformation work of the material of the flooring strip increases. It has proven to be advantageous, the diameter of the Deflection approximately as three to six times the thickness of the floor covering to choose, because in this area these two opposing effects are about the Keep Libra.

at The draw roller is particularly advantageous for non-slip holding of the flooring strip to choose a special adhesive under the name "scratching tape" is known and among others in the textile industry as a conveyor belt and in the Precision mechanics as a cleaning brush for files is used. This material consists of an elastic carrier tape, from the many individual, parallel aligned metal wires tight packed and slightly slanted to the tape surface stand out, with the metal wires pointed at their ends and bent in the opposite direction, whereby a preferred direction is defined in their use.

Experiments have shown that this scratching on the one hand holds the back of floor coverings, especially carpets of all kinds, in contact and purely tangential thrust in the preferred direction non-positively and very secure, on the other hand easily releases the so-fixed carpet by light, radial force again when the then acting there tangential force component is sufficiently small. This scratching tape is applied to the tension roller so that its mentioned preferred direction in Rotati onsrichtung shows. In further tests, it was determined how a flooring strip placed around such a fitted draw roll and acting against the preferential direction with a typical tensile stress behaves. It has been found that due to the interplay between surface texture and elasticity of typical floor covering materials, in particular carpets, and the elastic properties of the metal wires of the scraper strip with constant tension on the flooring strip, the tensile stress prevailing in it and thus the adhesive force exerted on it rapidly decreases in the direction of rotation So the non-slip fixation of the loaded flooring strip is mainly caused by the first path of its resting on the adhesive of the tension roller. On the other hand, the adhesive force decreases even with greater curvature of the surface of the scraper, so with smaller diameters of the tension roller and thus overall smaller Aufliegelängen. To be particularly advantageous, it has therefore been found to choose the diameter of the tension roller and its relative position to the guide roller so that after about semicircular looping of the tension roller the force exerted on the flooring strip adhesive force has become so small that this already by light, radial force effect is released again. Experiments have shown that this is at diameters of the tension roller of about ten to twenty times the thickness of the floor covering, so about a small multiple of the diameter of the deflection is the case.

The Invention makes use of this knowledge by creating an im Stand firmly arranged Abweismittel provides, which from the Adhesive trapped on the pull roller flooring strips after about half a turn without significant effort again replaces, so that he moves behind it in the direction of advance Device loosens on the floor for later disposal. For this purpose, the deflector is in the form of a lying in front of the tension roller and their anti-rotation Abweiskammes with low friction surface with several equally distributed tines and intermediate leaf leading edges formed, wherein the tines corresponding gaps in the draw roller covering Adhesives are assigned. For example, if the rejection comb stops Sheet metal can be made the tines, for example, with the leaf trailing edge and the rear Parts of the sheet lie in one plane and are approximately horizontal Direction with a thin compared to the thickness of the adhesive cross-section in the gaps intervention. This happens in such a way that the tine front edges are approximately tangential immediately above the Tensile roller itself, but still significantly below that held by the adhesive Flooring strips, the leaf leading edges immediately above the There on the draw roller attached adhesive and under the there already detached from the adhesive Flooring strips lie, without the rotating draw roller or Wear adhesive to touch.

is the flooring strip once again replaced by adhesive, plays the shape of the Abweiskamms practically no longer matter, because then the already above the Deflector comb completely leaked flooring strips due to its rigidity essential contributes to that the still subsequent parts of the flooring strip reliably from the adhesive superseded become. Of great importance, however, is the very first replacement of the Flooring strip, i. if during rotation of the tension roller, for example the beginning of the flooring strip meets the deflector comb. In In this case his first in the gaps lying parts with their underside easily coming from above on the low-friction surfaces the Zin ken, namely a sufficiently long distance to the tine front edges, so that they do not bump into them and block them can be. Due to the now onset of sliding on the tine surface these are Parts of the flooring strip increasingly radially outward from the pull roller pushed away. This radial displacement is transmitted because of the transversely prevailing stiffness of the material of the Flooring also on the lying between the teeth parts of the Flooring strip, so these are also increasingly from the Tines ago lifted off the adhesive and also radially outward from the pull roller pushed away become. With extremely high transverse stiffness of the material of the floor covering would become pushing this way while complete and evenly on transmit the lying between the teeth parts of the flooring strip, so that then the lying between the teeth of the Abweiskamms blade leading edges as well as the tine front edges themselves as continuously straight, to Drawing roller axially parallel and immediately above the adhesive Edges performed could become, starting from the point where they are no longer the adhesive touch would. However then with floor coverings slight transverse stiffness the side next to the tines on the adhesive lying parts of the flooring strip a little longer stick to the adhesive and not pushed that far away be, so compared to the directly above pushed away the tines Slightly sag the adhesive of the tension roller and so that in the further rotation on the leading edge of the sheet and be blocked by them.

Around to avoid this and still the flooring strips on one preferably short distance reliable peel off the adhesive to be able to it has proved to be advantageous, the leaf leading edges not to run as straight straight edges. Rather, the tines starting from the point where they are then no longer the adhesive touch would increasingly wider and thus continuously go over to the leaf leading edges. These Leaf leading edges are also with a greater distance from the tines increasingly progressively below the level of the tines and the sheet trailing edge lowered toward the draw roller and thereby nevertheless, their contours are always immediately above the contour Adhesive is. Through this, as possible evenly running Lowering and deformation of the blade leading edges lying between the tines and adjacent parts of the sheet of Abweiskamms is reliably achieved that on the one hand the repellent everywhere so close to the draw roll or the adhesive covering them without -wearing contact that it is a reliable Block against the further whereabouts of the flooring strip Draw roller and adhesive represents and possibly irregular from the floor covering protruding parts of the same also reliably detected and lifted. For another even with very soft floor coverings still no sagging Parts of the beginning of the flooring strip on transverse or nearly transverse parts of the leaf leading edges or the immediately adjacent subareas of the leaf and be blocked by these.

It goes without saying that the rejection comb can be carried out in another way, without departing from the essential features described for the task and operation. Thus, for example, the tines can be made of thicker material or curved, as long as they intervene only sufficiently well in the gaps of the adhesive and reliably repel the flooring strips. Likewise, the blade trailing edge and the trailing portions of the blade may be curved or lie in a plane other than the tines. Also, the tines can be so thin to save material that they rest under load by the repellent flooring strips on the draw roller, provided that this does not cause excessive friction losses and wear marks.

in the individual, it has proven the total width of the gaps less than about one third of the length of the draw roller to choose since so still enough space for a sufficient number and total width of all tines remains, without that the total area of the adhesive and thus the entire on the flooring strips practiced Adhesive force is reduced too much. The width of a tine should be at least a small multiple of the thickness of conventional floor coverings amount; the width of the adhesive left between each gap should be below a maximum value by the at the Abweiskamm Remaining residual adhesion between adhesive and flooring strips and the stiffness of the material of conventional floor coverings, in particular Carpeting, is determined. This must be guaranteed be that the flooring strip in its entire width significantly detached from the adhesive is, as soon as it hits the sheet of the Abweiskammes.

The provided by the invention arrangement of deflection and tension roller along with the adhesive tape provided as scratching tape has also proved to be very advantageous because only the back of the flooring strip comes in contact with the adhesive. This Prevents longer fibers, for example, with long, florid carpets into the adhesive and can reduce its adhesiveness, while of the back also such carpets no such danger emanates.

Farther it has proved to be advantageous, the draw roller a guide means Assign in the form of a resilient sheet, which from the deflection deflected and the tension roller supplied flooring strips the top about directly from the deflection to about the half the circumference of the draw roller around and with at most low spring pressure on the partially covered with the adhesive pull roller presses. Of the Spring pressure is not needed, for example, the sticking of the flooring strip to support. Much more becomes thereby - within the thickness range commercially available Flooring - the flooring strip against any irregular Behavior such as lifting, folding or jamming damaged, for example Dividing the flooring strip or falling off on the flooring strip entrained Secured dirt and other foreign particles. If such particles but not directly with the flooring strip from the device conveyed out can, can they fall inside the device on the bottom plate, from where you through this provided openings back on the surface of the flooring and thus still during or after completion of the operation can be carried out of the device.

A another embodiment the invention is particularly in the removal of floor coverings such PVC coverings from Advantage. She sees an extra Adhesive in the form of spines, with the spines in the area of the adhesive are arranged on the circumference of the tension roller and of the Drawing roller approximately radially with a clear inclination in the direction of rotation protrude. Here it is recommended, a slightly longer piece of flooring strip to detach from the ground, to guide around the guide roller and sufficiently far into the space between guide means and insert the draw roll to begin peeling. As soon as the initially entrained by the incipient rotation of the draw roller loose about half around the draw roller lying flooring strips through the connection with the floor slightly tensioned, the adhesive gets caught around a significant fraction of the thickness of the flooring towering spines with the flooring because of the resulting friction. The then additionally applied to the spines radial force component of the tension then pushes them into the floor covering without completely piercing it, the spines cover the floor because of their slight inclination Rotation direction additionally Stick to the adhesive without pushing it away from the adhesive. The Abweismittel is with recesses for the unimpeded pass provided the spines. For particularly strong PVC coverings is it is advantageous, the hooking of the spikes in the floor covering thereby to support, that the spikes associated with a arranged in the frame pressure roller is, which the flooring strips sufficiently firmly against the spines the tension roller presses. Here, the pressure roller is provided with circumferential grooves for the spines, so that they pass through the pressure roller without hindrance, if the do not carry a flooring strip with the rotating draw roller and The pressure roller should rest directly on the adhesive. It is self-evident, that the spines also act as a sole adhesive without any combination can be used with another adhesive.

When Drive motor of the tension roller is an electric motor with reduction gear provided by means of driving aids such as Timing belt and associated timing pulleys drives the tension roller. He is over in a space-saving way the tension roller arranged to the shortest possible length of the To allow device. Especially when very tightly glued Floor coverings at Propulsion of the device a considerable tilting moment around the However, it may be advantageous to the Drive motor seen in the direction of advance in front of the draw roller and preferably deep, so that deeper and further away from the Deflection roller away the center of gravity of the device their tilting safety is maximized. However, one thing is still possible small motor diameter to pay attention to the dimension of the whole Device in Vortriebsrichtung for the reasons already mentioned possible to keep small. Engine speed and gear reduction are with the diameter of the tension roller coordinated so that the Peripheral speed of the tension roller and thus the propulsion speed the device for the practical application are advantageous.

When An embodiment has been particularly simple and space-saving of the invention, in which as a drive motor provided in the tension roller coaxially arranged drum motor. Such motors with fixed axis and integrated Reduction gear slowly rotating cylindrical outer shell for example, as pull rollers for conveyor belts used. This is for sufficient, usually active cooling of the drum motor or to provide him and the adhesive equipped draw roller. To a particularly compact embodiment leads one Combination of drum motor drive and the described versions the deflection as semicircular rounded bottom plate or as supported by the bottom plate thin guide roller. In this case, the tension roller can be connected to both the rear end of the Completing the frame and the guide roller, as well as immediacy bar over the Base plate lie so that its center of gravity optimizes and the overall length the device is minimized.

In spite of the high directional stability during propulsion of the device can always small changes of direction occur, which is a manual, balancing the device make necessary. This is especially for the correction of unintentionally oblique manual introducing the beginning of the flooring strip required in the device. For this purpose points the frame on a handle, by means of which to change the propulsion direction by hand on the device so obliquely pulled back outside can be that by the force on the desired Curve inside side of the device briefly something braked, so obstructed in the drive, without the forward drive is prevented. Here are two effects of influence. On the one hand This force is used, for example, in an elastic carpet the carpet strip on this side around the idler roll something stretched, causing him to stay a little longer and the device moves in a curve on this page. To the others will - too at a completely stiff Carpet - through the higher one Tensile stress in the carpet strip on the metal wires of the scratching tape stronger this page loaded and thereby pulled back, which also like that Stretching the carpet strip cornering on the same side causes.

Although unintentionally faulty, only almost complete severing of the flooring strip before peeling off the release process usually not significantly hindered, it has been shown in certain types of carpet such as so-called loop fabric that thereby longer threads can be pulled out of the carpet material. They then form thread bridges between the already detached flooring strip and the floor covering remaining on the floor and can also be detected by the scratching tape, but can not always be replaced by this properly together with the flooring strip again by the Abweiskamm. As a result, there is a risk that the scraper band increasingly wound parts of such threads wound, whereby its adhesion is reduced and the space provided for the flooring strip space between adhesive and guide means can be narrowed. Experiments have shown that it is advantageous here to provide the entire front edge of the deflector, ie the front and side edges of the prongs and the front edge of the sheet of Abweiskamms with sharp edges. These cutting edges then cut or tear the said thread bridges so that the remaining partial threads still hanging unilaterally on the floor covering do not remain on the scratching tape but remain caught on the floor covering strip or on the not yet detached floor covering and thus likewise out of the device be pulled out again. The cutting action is assisted by the fact that the lateral boundary of the individual strips of the adhesive defined by thin, also sharp-edged limiting discs and the necessary to avoid friction losses, small distance between the front and side edges of the tines and the surface of the draw roller or the boundary plates is minimized. As a result, the thread bridges are usually cut off, torn or sheared off, without the Abweiskamm touches the draw roller. Any remaining threads remaining on the scratching tape must be removed from time manually removed at the time.

at increasing adhesive strength of the floor covering causes the increasing tension in the around the guide roller steered flooring strips an increasing, the device rearwardly tilting torque and, in particular in thick-elastic carpets, an increasing sinking of the guide roller in the carpet, causing the bottom plate, from the guide roller seen towards their front end, increasingly out of the carpet lifts out, so is increasingly angled. This increasing Tipping moment is increasing by then increasing, by increasing less supported Tare weight of the device resulting torque compensated. at Flooring strips of maximum width and extremely high adhesive strength and at the same time a device of very compact design and low Weight while nevertheless sufficiently high drive power is however this torque is not always sufficient. Although it is by manual Exercise of power reinforced the handle can be, it is advantageous to provide for such cases, a tilt protection.

For this is the lowest part of each side plate at the rear end of the frame with consistent thickness further back behind the entire Device extended in the form of a boom. It is favorable, the Bottom of the two arms not in the plane of the bottom plate but to choose them slightly obliquely upwards. at very firmly glued carpet then resemble the on the device acting torques and forces so that the deflection roller pressed into the carpet is the lowest, while the bottom plate moves forward and the outrigger backwards increasingly lift out of the carpet. When tearing out the first carpet strip is the tilting moment of both arms, at the following carpet strips only one, on the carpet with low-friction bottom slidably supported cantilever, but at least at sufficiently broad carpet strip has been found to be completely sufficient and does not lead to a lateral tilting of the device. The slightly sloping Bottom of the boom leads to the additional Advantage that at slightly oblique tilted back device reduces the friction of the bottom plate is because its leading edge and its openings are not that strong anymore be pressed against the carpet. It is advantageous here, both To choose boom as long that the minimum distance necessary for plugging the carpet strip is needed in the standing in front of the wall device, just is not enlarged. Thus, that is on the one hand ensures that even a very high overturning moment can be compensated and Nevertheless, the space above the deflection still for the operator freely accessible remains as the boom as an extension the side panels do not protrude into this room. On the other hand is guaranteed that the device is perpendicular to the direction of advance perpendicular to the Wall is aligned when pushed so far against the wall until its jibs touch the wall. This begins after Inserting the flooring strip around the guide roller the propulsion automatically in the intended direction, which is rational Working at a minimum steering effort is of great benefit. It It is advisable to design the arms so that they are lighter Transport to the back the device can be folded, for example, about a vertical axis and to fold out back to the side panels for operation can be locked.

It is further provided, the required for steering the device handle with about the total width of the device in a U-shape with crossbar and Design side poles and the side bars on the front part the boom near the guide roller rotatably fastened so that the operator the handle during inserting the flooring strip against the wall can without to be disabled, and to walk behind him during the Keep propulsion comfortable, lower arbitrarily far and the device can steer in the manner already described. This embodiment has the further advantage that the steering forces almost directly at the Deflection roller to be introduced into the device, so that no additional Tipping moments may arise on the device. The required electrical Control switch and power cord can also be attached to the handle be.

Further Details, features and advantages of the present invention result from the following description of particular embodiments with reference to the drawing.

It demonstrate

1 an embodiment of a device according to the invention in a schematic representation in side view,

2 a part of this embodiment in a schematic representation in plan view from above,

3 this embodiment in a schematic representation in plan view from below,

4 . 5 and 6 further embodiments of devices according to the invention in a schematic representation in side view.

As 1 can be removed, this embodiment of the device according to the invention 10 a frame 11 on which by a bottom plate 20 and two side plates connected to it 21 is formed, of which the front of the sake of clarity is omitted. In the side plates 21 is a diverter 13 in the form of a deflection roller 40 rotatably mounted such that it rotates with its lateral surface on the ground 210 of the room 200 glued flooring 100 rests. The guide roller 40 forms together with the bottom plate 20 and the side plates 21 , the rounded front edges 20a and 21a as well as low-friction undersides 20b and 21b have a support means 12 for supporting the device 10 on the flooring 100 , As traction means 14 the device 10 one also serves in the side plates 21 mounted and by a drum motor 36 trained drive motor 35 in its interior driven tension roller 30 , This draw roller 30 is with an adhesive 31 partially covered and thus holds the bottom 111 of the flooring strip 110 while holding, including the adhesive 31 as well as the deflection roller 40 about with the direction of advance 220 related rear end 11a of the frame 11 concludes. A guide 41 in the form of a resilient sheet 42 includes the flooring strip 110 on its top 112 approximately directly from the deflection 13 to about half the circumference of the draw roller 30 around and press it with at most low spring pressure on the adhesive 31 the draw roller 30 , The flooring strip 110 becomes when hitting his start 114 on a repellent 50 through this from the pull roll 30 pressed away. This is as a reject comb 51 with prongs 52 , Zin kenvorderkanten 52a and leaf leading edges 53a shown in the figure. The frame 11 has a tilt protection 70 on, whose jib 21d with slightly sloping upwards, friction-running undersides 21e the back ends 21c the side plates 21 extend and transport to the rear end 11a of the frame 11 can be folded down and unfolded and locked for operation.

2 is an illustration of the same embodiment in plan view from above, wherein the bottom plate 20 , the side plates 21 , the guide roller 40 with drive motor 35 and the flooring strip 11 are omitted. She shows that in the frame 11 rotating traction means 14 with draw roller 30 , Adhesive 31 and boundary discs 32 and the associated, overlying, firmly between the side plates 21 arranged, as a rejection comb 51 trained repellent 50 , The adhesive 31 covers the draw roller 30 only partially such that between the adhesive 31 associated boundary plates 32 regular gaps 31a remain. These gaps 31a are the in forward direction 220 pointing tines 52 of the deflector comb 51 assigned, with the tines 52 in a roughly horizontal direction in the gaps 31a intervene such that the tine front edges 52a in the immediate vicinity of the draw roller 30 and the boundary discs 32 of the adhesive 31 and well below that of the adhesive 31 arrested flooring strip 110 lie, without the draw roller 30 or the boundary discs 32 of the adhesive 31 to touch. Likewise, the leaf leading edges lie 53a of the leaf 53 of the deflector comb 51 in the immediate vicinity of the adhesive 31 without touching this. The tine front edges 52a and zinc side edges 52b as well as the leaf leading edges 53a are provided with sharp cutting edges. 3 shows the bottom plate 20 this embodiment with rounded front edge 20a , Bottom 20b and openings 20c as well as the direction of advance 220 ,

In 4 another embodiment is shown in which the support means 12 the device 10 through the deflection 13 in the form of a deflection roller 40 and one on the front part of the frame 11 arranged roller 22 is formed, which with its lateral surface on the floor covering 100 rests, with the bottom plate 20 not on the flooring 100 rests. The embodiment has an additional adhesive 33 in the form of spikes 33a on which in the area of the adhesive 31 on the circumference of the draw roller 30 are arranged so that they from the draw roller 30 approximately radially protrude with significant inclination in the direction of rotation and the adhesive 31 by a significant fraction of the thickness of the flooring 100 overtop. The spines 33a is one in the frame 11 arranged pressure roller 34 with circumferential grooves 34a assigned, which, for example, by spring load the flooring strip 110 against the spikes 33a the draw roller 30 pushes and thus even better on the around the spines 33a supplemented adhesive 31 and the spines 33a fixed. Part of the additional adhesive 33 is in for simplicity 2 shown. Shown are some of the spines 33a , which are in greater numbers in the range of the adhesive 31 on the circumference of the draw roller 30 are arranged, as well as for the unhindered passage of the spines 33a provided recesses 54 in the leaf leading edges 53a of the deflector comb 51 ,

5 shows a further embodiment with a front of the draw roller 30 positioned electric motor with reduction gear 37 that by means of drive aids 37a , For example, a timing belt with associated timing pulleys the tension roller 30 drives. 6 on the other hand shows an embodiment in which for the purpose of a shortest possible length of the device of the drive motor 37 above the draw roller 30 is arranged. The figure also shows the crossbar 61 and two side bars 62 existing handle 60 for steering the device 10 , the latter being the rear end 21c the side plate 21 are attached, and as a tilt protection 70 serving outrigger 21d ,

All in all is provided by the invention, a device which the Disadvantages of the prior art avoids and a light and efficient work on detachment of floor coverings, in particular of carpets allowed. The interaction of support, deflection and traction means with the goal higher Efficiency and smaller dimensions is improved. Both the for the supersede the flooring strip as well as for the propulsion of the device needed Power of the drive motor is minimized. The dimensions and the Weight of the device are minimized and their handling increased. Of the because of the size of the device inaccessible Edge area of the room to be processed is small. The number of used rollers is significantly limited, wearing parts, especially separating knife accounts. The production and operating costs is reduced. Directional fluctuations in the propulsion of the device are small and sufficiently good and easy to control. The environmental impact through dust, noise and vibrations are minimized.

 10

contraption

 11

frame

 11a

rear End of the frame

12

support means

13

deflecting

14

traction means

20

baseplate

20a

rounded Leading edge of the bottom plate

20b

bottom the bottom plate

 20c

Opening the baseplate

20d

rear End of the bottom plate

21

side plate

21a

rounded Leading edge of the side plate

21b

bottom the side plate

21c

rear End of the side plate

21d

boom the side plate

21e

bottom of the jib

22

idler roll

30

pulling roller

31

adhesives

31a

Gap of the adhesive

32

handguard

 33

additional adhesives

33a

sting

 34

pressure roller

34a

groove

 35

drive motor

36

drum motor

 37

electric motor with reduction gear

37a

driving means

 40

deflecting

40a

deflecting

 41

guide means

42

springy sheet

 50

repellents

51

Abweiskamm

 52

prong

52a

Zinc front edge

52b

Zinc side edge

53

leaf

 53a

Blade leading edge

53b

Blade trailing edge

 54

recess

60

handle

 61

crossbar

62

side bar

 70

tilt protection

100

Flooring

 110

Flooring strips

111

back of the flooring strip

112

top of the flooring strip

113

separation line

 200

room

210

ground

 220

drive direction

Claims (17)

Device for removing glued flexible flooring such as carpet or PVC flooring, the flooring is optionally first cut by cutting strips of appropriate width, each stripe start then detached from the ground and fed to the device and the flooring strip then by pulling the device on previously detached part the floor covering strip is further detached from the floor, with a frame on which a support means for supporting the device on the floor covering, a deflection means for deflecting the flooring strip and for supporting the device on the floor covering and a traction means for pulling the flooring strip are arranged such that when pulling on the flooring strip by the traction means a detachment of the flooring strip from the ground and a propulsion of the frame results, characterized in that a) the deflection means ( 13 ) of the device ( 10 ) a diameter of at most a small multiple of the thickness of the floor covering ( 100 ) and is arranged so that it with the direction of advance ( 220 ) rear end ( 11a ) of the frame ( 11 ) completes, b) the traction means ( 14 ) of the device ( 10 ) by exactly one in two side plates ( 21 ) of the frame ( 11 ) and with an adhesive ( 31 ) partially covered draw roll ( 30 ) is formed, wherein the tension roller ( 30 ) with adhesive ( 31 ) has a diameter of a small multiple of the diameter of the deflection means ( 13 ), as close as possible to the deflection ( 13 ) is arranged and with the in propulsion direction ( 220 ) seen the rear end ( 11a ) of the frame ( 11 ), c) the adhesive ( 31 ) of the draw roller ( 30 ) by the deflection ( 13 ) of the device ( 10 ) deflected flooring strips ( 110 ) on its back ( 111 ), non-slip holds and during rotation of the draw roller ( 30 ) around the draw roller ( 30 ) and d) in the frame ( 11 ) arranged Abweismittel ( 50 ) the flooring strip ( 110 ) after about half a turn of the draw roller ( 30 ) from the draw roller ( 30 ) and the flooring strips ( 110 ) behind on the floor ( 210 ) of the room ( 200 ). Contraption ( 10 ) according to claim 1, characterized in that the support means ( 12 ) of the device ( 10 ) by the deflection means ( 13 ) and the low-friction underside ( 20b ) of a rounded front edge ( 20a ) and with openings ( 20c ) provided bottom plate ( 20 ) of the frame ( 11 ) is formed. Contraption ( 10 ) according to claim 1, characterized in that the support means ( 12 ) of the device ( 10 ) by the deflection means ( 13 ) and one at the front of the frame ( 11 ), in the side plates ( 21 ) friction roller rotatably mounted roller ( 22 ) is formed, which with its lateral surface on the ground ( 210 ) of the room ( 200 ) bonded flooring ( 100 ) rests, wherein the bottom plate ( 20 ) not on the floor covering ( 100 ) rests. Contraption ( 10 ) according to claims 1 to 3, characterized in that the deflection means ( 13 ) of the device ( 10 ) by exactly one at the rear end ( 11a ) of the frame ( 11 ), in the side plates ( 21 ) friction rotatably rotatably mounted guide roller ( 40 ) is formed. Contraption ( 10 ) according to claims 1 to 3, characterized in that the deflection means ( 13 ) by the low-friction, approximately semicircular rounded rear end ( 20d ) of the bottom plate ( 20 ) is formed. Contraption ( 10 ) according to claims 1 and 3, characterized in that the deflection means ( 13 ) by a deflection roller ( 40a ) formed in the rear end ( 20d ) of the bottom plate ( 20 ) rotatably mounted rotatable, supported and against falling out by additional storage in the side plates ( 21 ) is secured, and which has a diameter of about the thickness of the bottom plate ( 20 ), leaving the end ( 20d ) of the bottom plate ( 20 ) protrudes about half a diameter out and with its lateral surface approximately on the floor covering ( 100 ) rests. Contraption ( 10 ) according to claims 1 to 6, characterized in that a) the adhesive ( 31 ) of the draw roller ( 30 ) is equipped and aligned in such a way that it is aligned with the rear side ( 111 ) of the flooring strip ( 110 ) is positively locked in contact and tangential tensile stress, b) the adhesive ( 31 ) the flooring strip ( 110 ) as far and as long as firmly adhering and during rotation of the draw roller ( 30 ) moves with this, as the flooring strip ( 110 ) on the draw roller ( 30 ), and c) the flooring strip ( 110 ) when pushing away from the adhesive ( 31 ) by the repellent ( 50 ) with slight radial force again easily from the adhesive ( 31 ) releases. Contraption ( 10 ) according to claims 1 to 7, characterized in that as adhesive ( 31 ) a scratching tape is provided. Contraption ( 10 ) according to claims 1 to 8, characterized in that a guide means ( 41 ) in the form of a resilient sheet ( 42 ) is provided, which by the deflection ( 13 ) and the draw roller ( 30 ) supplied flooring strips ( 110 ) on its upper side ( 112 ) approximately directly from the deflection ( 13 ) to about half the circumference of the draw roller ( 30 ) and with at most low spring pressure on the adhesive ( 31 ) partially covered draw roll ( 30 ) presses. Contraption ( 10 ) according to claims 1 to 9, characterized in that a) an additional adhesive ( 33 ) in the form of spines ( 33a ), the spines ( 33a ) in the area of the adhesive ( 31 ) on the circumference of the draw roller ( 30 ) are arranged by the draw roller ( 30 ) protrude approximately radially with a clear inclination in the direction of rotation and the adhesive ( 31 ) by a significant fraction of the thickness of the floor covering ( 100 ) and b) the repellent ( 50 ) with recesses ( 54 ) for the unobstructed passage of the spines ( 33a ) is provided. Contraption ( 10 ) according to claim 10, characterized in that the spines ( 33a ) one in the frame ( 11 ) arranged pressure roller ( 34 ) associated with the flooring strip ( 110 ) against the spines ( 33a ) of the draw roller ( 30 ), whereby the pressure roller ( 34 ) with circumferential grooves ( 34a ) for the unobstructed passage of the spines ( 33a ) are provided. Contraption ( 10 ) according to claims 1 to 11, characterized in that a) the draw roller ( 30 ) partially covering adhesives ( 31 ) of the draw roller ( 30 ) Gaps ( 31a ) having, the adhesive ( 31 ) through its associated thin boundary discs ( 32 ), whereby the total width of the gaps ( 31a ) less than about one third of the length of the draw roller ( 30 ), b) the repellent ( 50 ) as a rejection comb ( 51 ) with a low-friction surface with several equally distributed tines ( 52 ), a sheet ( 53 ) and between the tines ( 52 ) lying leaf leading edges ( 53a ) is formed, wherein the tines ( 52 ) with the leaf trailing edge ( 53b ) and the back parts of the leaf ( 53 ) lie in one plane, the gaps ( 31a ) and slightly narrower and significantly lower than the gaps ( 31a ), c) the tines ( 52 ) in a horizontal direction into the gaps ( 31a ) engage in such a way that between the draw roller ( 30 ) and the adhesive ( 31 ) paving strips ( 110 ) in the immediate vicinity of the draw roller ( 30 ) and the limiting discs ( 32 ), without the draw roller ( 30 ) or the limiting discs ( 32 ), d) the tines ( 52 ) from the point where they are no longer the adhesive ( 31 ) become increasingly broader and continuously into the leaf leading edges ( 53a ), wherein the leaf leading edges ( 53a ) at a greater distance from the tines ( 52 ) increasingly progressively below the level of the tines ( 52 ) and the leaf trailing edge ( 53b ) to the draw roller ( 30 ) are lowered and shaped so that their contour always immediately above the adhesive ( 31 ), and e) the tine leading edges ( 52a ), Zinc side edges ( 52b ) and the leaf leading edges ( 53a ) and the limiting discs ( 32 ) are provided with sharp cutting edges. Contraption ( 10 ) according to claims 1 to 12, characterized in that as a drive motor ( 35 ) of the draw roller ( 30 ) a coaxially arranged drum motor ( 36 ) is provided. Contraption ( 10 ) according to claims 1 to 12, characterized in that as a drive motor ( 35 ) of the draw roller ( 30 ) an electric motor with reduction gear ( 37 ) is provided, in the direction of advance ( 220 ) seen in front of the draw roller ( 30 ) is arranged and by means of driving aids ( 37a ) the tension roller ( 30 ) drives. Contraption ( 10 ) according to claims 1 to 12, characterized in that as a drive motor ( 35 ) of the draw roller ( 30 ) an electric motor with reduction gear ( 37 ) provided above the draw roller ( 30 ) is arranged and by means of driving aids ( 37a ) the tension roller ( 30 ) drives. Contraption ( 10 ) according to claims 1 to 15, characterized in that a) as anti-tilt device ( 70 ) the lowest part of each side plate ( 21 ) at the rear end ( 11a ) of the frame ( 11 ) with a constant thickness further to the rear behind the frame ( 11 ) in the form of one arm each ( 21d ), b) the undersides ( 21e ) of the two arms ( 21d ) are slightly obliquely upwards and running low friction, c) the booms ( 21d ) are so long that the for inserting the flooring strip ( 110 ) in the device standing in front of the wall ( 10 ) required minimum distance is just not increased, and d) the boom ( 21d ) to the rear end ( 11a ) of the frame ( 11 ) and to the side plates ( 21 ) are aligned unfold and lockable. Contraption ( 10 ) according to claims 1 to 16, characterized in that the frame ( 11 ) a handle ( 60 ) for applying a steering force to change the propulsion direction ( 220 ) having approximately the total width of the device ( 10 ) in U-shape with crossbar ( 61 ) and side bars ( 62 ), whereby the side bars ( 62 ) at the front part of the boom ( 21d ) are rotatably mounted so that the steering force almost directly on the deflection ( 13 ) into the device ( 10 ) is initiated.