EP1614830A1 - Application device for thin mortar bed - Google Patents

Abstract

The device for the applying of mortar (2) on a foundation (3), a storage container (4) for the mortar, and a mortar delivery roller (5) with a first running axle (6) supporting the device. The device has an additional guide element or a second running axle (7) so that the device can travel over the ground without tipping and the delivery roller can be guided over the ground with a constant clearance (A) without contact. A drive unit is provided for the driving of the mortar delivery roller.

Description

The present invention relates to a mortar application device ("mortar carriage"), in particular for applying thin-bed mortar, according to the preamble of claim 1 and a method for applying thin-bed mortar according to the preamble of claim 29.

Under a so-called thin-bed mortar - synonymously also called Schmalfugenmörtel - according to the invention, in particular such a mortar understood, which is applied in the manner of an adhesive in joint thicknesses of only about 1 to about 3 mm. Such thin-bed mortars may contain as aggregates, for example, sand or perlite. For the use of thin-bed mortars, the processing of flat-ground bricks (plan blocks) is required, because - in contrast to conventional masonry mortar - dimensional tolerances of the stones are not compensated. Thin-bed mortars are described for example in DE 298 16 149 U1 or DE 42 18 143 C1. Against this technical background, the need to evenly disperse such thin bed mortars, i. H. with as constant height and width of the mortar layer or the mortar strip to apply with high accuracy to a masonry.

In contrast to conventional bricks, the abovementioned ground stones or planar blocks therefore have a high degree of dimensional stability with regard to the dimensions of the stone, in particular in the region of approximately 1 mm. The usual in the masonry of ground stones, ie in the creation of a masonry with such stones column between the single stones are therefore much lower than in conventional bricks with larger dimensional tolerances: While in conventional bricks with larger dimensional tolerances gap widths, which are filled by the masonry mortar, from about 1 to about 2 cm are common - which also the compensation of inaccuracies in the millimeter range is possible -, this gap in the masonry of ground stones is usually only about 1 to about 3 mm (so-called Dünnbettmörtelverfahren) , Due to the low joint strength, it is therefore common to speak of a "sticking" of the stones. Planblocksteine are for the purpose of weight and material savings as well To improve the thermal insulation and sound insulation often provided with cavities. These stones are synonymously also called Hochlochsteine or Mehrkammersteine. These so-called high-hole or multi-chamber stones sometimes have a large number of air chambers (for example two, three, four or nine chambers), which not only make the stone lighter and save material, but also increase thermal insulation. The dimensions of the air chambers result in accordance with DIN 18148, 18151 and 18153. The multi-chambered stones can for example consist of pumice, concrete, sand-lime brick or bricks. The hollow chambers are preferably arranged vertically.

Due to the presence of the cavities in the finished wall a particularly good thermal insulation is achieved. The use of such stones with vertical cavities in combination with joints of thin-bed mortar with a thickness of only about 1 to about 3 mm leads to walls with a comparison with other systems incomparable thermal insulation and is associated with a weight and material savings. A prerequisite is, however, the avoidance of continuous cavities in the wall, especially when it forms over the entire wall height extending hollow chambers, as in such chimney-like cavities undesirable air movements can come about, which partially negate the good thermal insulation. For this reason, it is thus desirable to complete the cavity on the surface of the stones with the Dünnbettmörtelschicht each time the wall is broken, ie. H. to "cover", so to speak. The application of thin bed mortar thus allows the production of masonry with good insulating properties. Another advantage is the fact that mortaring with thin bed mortar can be done much faster. However, with the use of thin bed mortar because of the thin joints only limited possibility to correct the existing dimensional tolerances of the stones with a change in the joint thickness.

For the above-mentioned reasons, in the processing of thin-bed mortar, ie in the case of walls, in particular with high-hole or multi-chamber bricks, it is necessary to prevent the mortar from falling into the cavities as much as possible because material in the cavities or chambers adversely affects the heat transfer. and soundproofing of the stones.

In connection, in particular, with potholes in which, by definition, a hole perpendicular to the bearing joint plane, so there is the problem that the surface to be bonded due to the numerous openings has a smaller effective area compared to the corresponding cross-sectional area of the stone. Consequently, there is the need on the one hand to realize the largest possible and uniform coating with thin-bed mortar on the one hand in order to obtain an optimal bonding of the stones, but on the other hand avoid the Eindrük-ken of thin-bed mortar in the holes of the blast stones for the reasons described above. This can be realized in particular with a "decanting" application, whereby the openings of the high-hole stones are bridged.

According to DE 44 05 796 A1, the aforementioned problem of covering job is solved in that directly on the stones, a fabric strip is applied, which prevents the collapse of mortar material and closes the hollow chambers of the stones at the top, so that the mortar after application of the fabric strip is applied. This makes it possible to prevent the mortar from falling into the holes. However, this method is disadvantageous in that when laying the application of the fabric strip requires an additional step, which has a negative effect in terms of time and material.

Furthermore, various devices for applying mortar are known from the prior art. In known prior art grout applicators, a reservoir is generally filled with mortar over a fill port. Due to its viscous consistency, it distributes evenly throughout the entire lower part of the application opening. By opening a slide, the filled mortar reaches over the entire surface of the discharge opening on the surface of the stones to be coated. When the device is pulled over the stones, the mortar now already on the stones is forced through a gap located between the stone surface and the lower edge of the rear wall of the device. In this process, a mortar layer forms behind the device, which corresponds to the width and height of the application gap. Such mortar application slides are for example in FR 2 392 196 A or described in DE 198 29 715 A1. A disadvantage of these application devices is the fact that the order quality of the mortar depends on the degree of filling the applicator: So in a reservoir with high level of pressure of the mortar on the stone surface is high, so that for example in the case of high bricks a certain amount of the mortar in the Stone cavities is pressed into it and sinks unused herein, while at a relatively empty reservoir, the pressure of the mortar still located in the interior of the applicator device has fallen to the underlying stones so far that the mortar barely adheres to the stone or no closed mortar layer arises more. The result is that the mortar no longer flat and evenly in the form of a closed layer rests on the stone.

DE 100 54 900 A1 describes a mortar applicator which reduces the disadvantages of mortar loss due to the initially high mortar pressure and poor mortar application due to the low pressure with empty container by placing a conveyor belt in the mortar applicator carriage which removes the mortar transported. As a result, the previously described problems can only be partially avoided.

An additional disadvantage of the mortar application devices known from the prior art is the high force when pulling these devices on the stones to be coated, on the one hand by the high frictional resistance of the device against the stones and on the other hand by the resistance to the part of the mortar mass, the Inside the device is piled on the stones and is to be distributed on the stones caused.

Mortar application devices in which the mortar to be applied is formed by means of a roller and applied to the stones, are known for example from DE 43 34 096 A1, GB-PS 753 558 and FR 2 490 263 A. However, the mortar application devices described therein have the disadvantage that the mortar application roller or mortar discharge roller always touches the stone layer and rolls on it, so that the mortar is rolled or pressed by the revolving mortar application roller on the stones, so that in the case of high-hole bricks mortar unintentionally sinks into the stone openings or is pressed into the stone openings.

Finally, DE 100 54 899 A1 discloses a mortar application device for applying thin-bed mortar, in which the mortar layer is deposited on the stones as a closed layer by a circulating mortar application roller which does not touch the stones. Via a drive, in particular a gear, the mortar application roller is driven in opposite directions to the direction of travel or in opposite directions to a rolling on the Hochlochsteinen drive axle, so that the mortar layer is deposited from a relatively large amount on the stones. This can lead to an undesirable tearing of the mortar layer. Since the mortar layer is placed in the direction behind the discharge and thus behind the mortar application roller on the stones, for example, the last piece of stone row to be coated with this device can no longer be coated when the drive roller has no contact with the coating bricks or the mortar applicator due to a wall or a pillar can not be moved further. Moreover, it is not always guaranteed in this device that the mortar application roller is guided during operation at a constant distance over the stones to be acted on, as it may come to a slight tilting of the device during the process. This can cause the mortar layer does not always have the desired uniform thickness and the risk of tearing the mortar layer is increased. The required for the opposite drive the mortar applicator gear can be contaminated in the operating condition and impaired in its operation.

It is therefore an object of the present invention to provide a device and / or a method for applying mortar, in particular thin-bed mortar, by means of which it is possible to at least partially avoid or at least mitigate the disadvantages described above.

Another object is to provide a device or a method for applying mortar, in particular thin-bed mortar, with their or whose help it is possible, thin-bed mortar - in particular regardless of the degree of filling of the device used - with uniform and small thickness and in the case of Hochloch- or multi-chamber stones, the holes or chambers of the stones "covering" or bridging manner apply, in particular by quasi contactless placement of the mortar strip. It should be avoided in particular that the mortar, especially thin-bed mortar, is pressed into the high-hole stones and sinks unused in the high-hole stones. Furthermore, the thickness of the mortar strip should be adjustable over a certain range.

In order to achieve the above-described objects, a mortar application device according to claim 1 or a method for applying mortar, in particular thin-bed mortar, according to claim 29 is proposed according to the invention. Further, advantageous embodiments of the mortar application device or the method according to the invention are the subject of the respective subclaims.

A basic idea of the present invention is, in a device for applying mortar, in particular thin-bed mortar, on a ground, such as a row of stones, with a reservoir for receiving the mortar, a discharge roller for discharging the mortar and a first, the device bearing Running axle to provide an additional guide element or a second axle, so that the device can be moved without tilting on the ground and the Austragswalze with substantially constant distance without contact on the ground feasible. A special feature of the device according to the invention for applying mortar, in particular thin-bed mortar, must therefore be seen in the fact that the device has an additional guide element or a second barrel axis. This makes it possible that the device - can be moved on the ground - without tilting - and that the discharge roller can be performed at a substantially constant distance over the ground, without touching it.

In this way results in a device for applying mortar (mortar application device), with which it is possible in a simple and safe way, Apply mortar, in particular thin-bed mortar, to a building ground. In the context of the present invention, the ground is preferably a series of stones arranged next to one another.

The mortar application device according to the invention is particularly suitable for coating or loading of multi-chamber bricks, which are synonymously also referred to as high-hole bricks. With the aid of the mortar application device according to the invention it is ensured that the mortar, in particular thin-bed mortar, can be applied continuously and with high accuracy of the order with respect to the thickness and width of the applied mortar on the stones. This is achieved in particular by the fact that the mortar applicator can be moved without tilting over the ground to be coated ground so that the discharge roller for the mortar can be moved at a constant distance on the ground, without the applied mortar layer or the ground to touch. Thus results in a "lidding" order of Dünnbetmörtels on the high hole stones, so that the holes or cavities of the high-hole stones are bridged. Furthermore, the mortar application device according to the invention is easy to move over the ground, wherein the drive of the discharge roller is ensured by an insensitive to contamination drive.

The aforementioned advantages of the device according to the invention apply equally to the method according to the invention for applying mortar, in particular thin-bed mortar, to a building ground, wherein the ground can be a row of stones, in particular a series of raised holes.

Fig. 1

Eine schematische Seitenansicht der Mörtelauftragsvorrichtung im Betriebszustand, wobei ein Mörtelstreifen auf einen Baugrund, hier eine Steinreihe, aufgelegt wird;

Fig. 2

eine schematische Seitenansicht der Mörtelauftragsvorrichtung mit einer Antriebseinheit für eine Austragswalze;

Fig.3

eine schematische Draufsicht der Mörtelauftragsvorrichtung mit einer Reduziereinrichtung, mit welcher die Breite des auszutragenden Mörtels bzw. Mörtelstreifens eingestellt werden kann;

Fig. 4

eine schematische Unteransicht der Mörtelauftragsvorrichtung, bei der gemäß einer erfindungsgemäß bevorzugten Ausführungsform die Laufachsen mit mehreren axial verschiebbaren Laufrollen versehen sind.

Further advantages, features, aspects and features of the present invention will become apparent from the following description of a preferred embodiment shown in the drawings. It shows:

Fig. 1

A schematic side view of the mortar application device in the operating state, wherein a mortar strip on a ground, here a row of stones, is placed;

Fig. 2

a schematic side view of the mortar application device with a drive unit for a discharge roller;

Figure 3

a schematic plan view of the mortar application device with a reducing device, with which the width of the mortar or mortar strip to be discharged can be adjusted;

Fig. 4

a schematic bottom view of the mortar application device, in accordance with a preferred embodiment of the invention, the running axles are provided with a plurality of axially displaceable rollers.

1 to 4 show an inventive device 1 ("mortar applicator" or "mortar carriage") for applying mortar 2. The mortar 2 is in particular thin-bed mortar, which can be applied to a ground 3, wherein it Subsoil 3 to a row of stones, preferably a plurality of juxtaposed high hole stones or multi-chamber stones, act. The mortar application device 1 according to the invention comprises a storage container 4 for receiving the mortar 2, a discharge roller 5 for discharging the mortar 2 and a first, the mortar application device 1 supporting barrel axis 6. The mortar application device 1 according to the invention is characterized in that it has an additional guide element or a second axis 7, so that the mortar applicator 1 is tilt-free on the ground 3 movable and the Austragswalze 5 with substantially constant distance A without contact on the ground 3 can be guided , Advantageously, the device 1 is designed such that the discharge roller 5 during operation of the device 1 is drivable in the same direction to the direction of travel V or that the Austragswalze 5 is rotatable in the operation of the device 1 in the same direction R as the first and / or the second Barrel axis 6, 7.

In the context of the present invention, the subsoil 3 is, for example, a row of stones, wherein this row of blocks preferably consists of the abovementioned raised bricks or multichamber bricks. In principle, it is equally possible to coat individual stones with the mortar application device according to the invention.

As is apparent from FIGS. 1 and 3, the mortar application device 1 according to the invention has a filling opening 16, via which a filling of the storage container 4 with the mortar 2 to be discharged is possible. According to a preferred embodiment of the present invention, the filling opening 16 for the mortar 2 is in the operating state of the mortar applicator 1 above the discharge roller 5. In the present invention, the term "operating state" the state understood in which by movement of the mortar application device in the direction of travel V Mortar 2 is applied to the ground 3.

In the context of the present invention, the additional guide element 7 can be, for example, a guide slide or a guide run which slides over the ground 3. According to the invention, however, the arrangement of a second drive shaft 7 on the mortar application device 1 according to the invention is preferred, which leads to the advantage that the mortar application device 1 according to the invention can be moved with little effort and uniformly over the ground 3. In particular, it is ensured by the second axis 7 that the mortar application device kippfrei and without tilting and thus moves smoothly on the ground 3, resulting in a significant improvement both the handling of the mortar application device 1 according to the invention and the uniformity of the discharged mortar 2. Preferably according to the invention, the running axes 6, 7 are arranged on the mortar application device 1 according to the invention such that they are oriented parallel to the discharge roller 5 and extend equally perpendicular to the direction of travel V. The discharge roller 5 promotes in the operating state of the mortar application device 1 mortar 2 from the reservoir 4, so that the mortar 2 is applied to the ground 3. In this context, the discharge roller 5 is preferably arranged substantially flush with the inner side walls of the reservoir 4 and is preferably arranged below the reservoir 4 and below the filling opening 16 in the operating state of the mortar applicator 1, so that a continuous supply of the discharge roller 5 with mortar. 2 and a substantially complete emptying of the reservoir 4 is ensured.

The storage container 4 may be designed such that the front and rear walls of the storage container 4 in the direction of travel V down to the discharge roller 5 preferably V-shaped converge, so that the reservoir 4 is funnel-shaped. This leads to a good supply of the discharge roller 5 with mortar 2 present in the storage container 4 and to a good drainability of the storage container 4. Equally, preferably, the rear wall of the storage container 4 in the travel direction V (ie the wall of the storage container 4 adjacent to the discharge roller 5). be arranged perpendicular to the direction of travel V, so that the discharge roller 5 can be positioned as close to the end of a row of stones.

A significant advantage of the mortar application device 1 according to the invention is the fact that - as already stated - the discharge roller 5 due to the specific design of the mortar applicator 1 with substantially constant distance A to the ground 3 without contact on the ground 3 is feasible. This leads to the great advantage that the mortar 2 can be applied with uniform thickness on the ground 3, which is particularly important for high hole stones of great importance.

According to the invention, it can be provided that the mortar application device 1 for better handling at least one handle 17, with which the mortar application device can be placed on the ground 3 or with which the mortar applicator 1 can be moved over the ground 3. In this case, the mortar application device 1 is preferably pulled over the ground 3. 1 to 3 show a preferred arrangement according to the invention of two handles 17 on the mortar application device. 1

Furthermore, Figs. 2 and 4 illustrate that the mortar application device 1 according to the invention can be designed such that the discharge roller 5 can be driven by a drive device 8. In the context of the present invention is in this context the term "drivable" to understand a rotation or rotation of the discharge roller 5, so that the discharge roller 5 in the operating state of the mortar applicator 1 performs a rotational movement while the mortar 2 promotes and discharges and alike on the ground 3 applies or hangs up. According to an inventive Embodiment, it may be provided that the drive means 8, the first and / or the second axis 6, 7 coupled to the discharge roller 5 so that a power transmission of the first and / or second axle 6, 7 takes place on the discharge roller 5. According to the invention, both the first and second running axis 6, 7 preferably drive the discharge roller 5 (see FIGS. 2 and 4).

According to the invention, it is equally possible that only one axis 6 or 7, in particular the first axis 6, the discharge roller 5 drives, with such a configuration, the second axis 7 ensures stabilization and better management of the mortar application device in the operating condition - especially before Background, the distance A shown in Fig. 1 of the discharge roller 5 to the ground 3 substantially constant.

FIGS. 2 and 4 show that the drive device 8 can have at least one belt, in particular a toothed belt or V-belt. Similarly, the drive can also be done via a chain. This is a simple and robust mechanism that ensures the drive of the discharge roller 5 and - in contrast to a transmission - due to the simple power transmission is technically less expensive and less prone to contamination. In the context of the present invention, the drive device 8 is preferably completely or partially detachable from the mortar application device 1, so that the individual components can be easily cleaned or easily replaced when worn.

Figs. 3 and 4 illustrate that the drive means 8 may be additionally provided with a protective housing 19, resulting in additional protection against contamination.

As already stated, the discharge roller 5 can be driven by the first and / or the second drive axle 6, 7. In this case, the drive of the discharge roller 5 - as illustrated in FIG. 1 - such that during the process of mortar applicator 1, the discharge roller 5 is rotatable in the same direction R as the first and / or second axle 6, 7. In other words both the discharge roller 5 and the running axles 6, 7 rotate in the same direction in the operating state of the mortar application device 1 and are therefore, so to speak, in the same direction. The discharge roller 5 and the first and / or second running axis 6, 7 are advantageously the same direction to the direction of travel V, ie rotate in the operating state in the direction of travel V. By the principle of the synchronicity of the Austragswalze 5 on the one hand and the running axles 6, 7 on the other hand ensures that the mortar 2 is gently placed on the ground 3 and only slight shear forces on the molded mortar 2 or mortar strip 9 act, since the mortar 2 - can be placed on the ground 3 - from a small amount - in conjunction with the defined distance. This leads to excellent operating properties of the mortar application device 1, since the mortar 2 is discharged with high continuity and tearing off the discharged mortar 2 or mortar strip 9 is avoided.

In this context, it is inventively preferred that the drive of the discharge roller 5 is such that the mortar discharge V _M is substantially equal to the speed V _{v of} the mortar applicator 1, so that - in other words - the length of mortar 2 discharged per unit time or Mortar strip 9 corresponds to the length of the traversing distance of the mortar application device 1 traveled in this period. This results in that the mortar 2 can be placed on the ground 3 substantially stress-free and without the occurrence of greater shear forces. If required or desired due to the application, the mortar discharge speed V _{M may} also be slightly greater or smaller than the travel speed V _{v of} the mortar application device 1.

As can be seen in Fig. 1, the mortar 2 is discharged through the discharge roller 5 in the form of a mortar strip 9 with a defined thickness D and defined width B. According to a preferred embodiment of the invention, the concept of the mortar applicator 1 is such that the layer thickness D of the mortar strip 9 can be adjusted. In this context, the distance A of the discharge roller 5 should be at least equal to or preferably greater than the layer thickness D of the mortar strip 9, so that the mortar strip 9 can be applied to the ground 3 without pressure. Preferably, the discharge roller 5 is arranged or in the operating state of Ground 3 spaced that the distance A of the discharge roller 5 to the ground 3 generally in the range of one to five times the thickness D of the mortar strip 9 to be discharged, in particular in the range of 1.5 times to four times the thickness D, preferably in the range of two to three times Dikke D, is. In a preferred thickness of the discharged mortar strip 9 of about 2 mm to about 3 mm, the distance A of the discharge roller 5 to the ground 3 should therefore be at least about 2 mm to about 3 mm; but for example not more than about 4 mm to about 6 mm. This ensures that on the one hand, the mortar strip 9 is placed without pressing or imprints on the ground 3, so that in the context of a "declamatory" order the mortar 2 is not pressed into the cavities of the raised bricks or sinking there, and on the other hand, the mortar strip 9 is not stored from too high a height to prevent tearing of the mortar strip 9. In this way, in the context of the present invention, an additional insert for stabilizing the mortar strip 9, such as a fabric tape or a film, can be dispensed with.

As can be seen in FIGS. 2 and 3, the mortar application device 1 according to the invention, in particular its storage container 4, has a discharge opening 10. It may be provided according to the invention that the mortar 2 is formed by the discharge opening 10 to the mortar strip 9. In this context, it is inventively preferred that the discharge opening 10 is formed in a gap shape and in particular has an adjustable gap width, by means of which the aforementioned thickness D of the mortar strip 9 is regulated.

The discharge opening 10 can - as shown in FIG. 1 - be arranged in the direction of travel before and / or above the axis of rotation of the discharge roller 5. Furthermore, it is inventively preferred that the discharge opening 10 between the discharge roller 5 and the barrel axles 6, 7 is arranged. This arrangement leads in the operating state of the mortar applicator 1 to the fact that the discharge roller 5 rotates or is guided over the discharged mortar 2 or the mortar strip 9, without touching or squeezing or rolling on the discharged mortar strip 9 once placed on the ground 3, so that in the case of Hochloch- or multi-chamber stones pressing the mortar 2 or mortar strip 9 in the holes or cavities is avoided. In this case - as already mentioned - due to the defined distance A, a rolling or pressing of the mortar 2 or mortar strip 9 on the ground 3 avoided. Rather, the application or application of the mortar 2 according to the invention is carried out by a gentle application, along with only a slight action of shear forces on the discharged mortar 2 or mortar strips 9. By this inventive arrangement of the discharge roller 5 and the barrel axles 6, 7 and Running axis 6 and the guide member 7 is also ensured that in the operating condition, the barrel axles 6, 7 and the barrel axis 6 and the guide member 7 does not roll over the already discharged mortar strip 9 or roll, so that after the discharge of the mortar strip 9 no additional forces act on the mortar strip 9. In this way, a full-surface coating of the ground 3 or the hollow blocks with the mortar strip 9 is equally possible.

As can be seen in FIGS. 1 and 3, according to a preferred embodiment of the present invention, the discharge opening 10 may be delimited by the discharge roller 5 and a stationary part. These are in particular in the stationary part to an adjusting device 11 for the layer thickness D of the mortar 2. Between the discharge roller 5 and the adjuster 11, a gap-shaped discharge opening 10 is formed, through which the mortar 2 is formed in the operating state to the mortar strip 9. The adjusting device 11 may in particular be an adjustable diaphragm. The adjusting device 11 can be variably and preferably continuously adjusted by means of a special adjusting mechanism in order to vary the thickness D of the mortar strip 9. According to the invention, mortar strip thicknesses D of about 1 mm to about 3 mm are preferred. By means of the adjustment mechanism for the setting device 11, which is preferably operated via an adjusting lever 18, a plurality of predetermined settings of the setting device 11 are possible according to a preferred embodiment of the mortar application device 1 according to the invention: Thus, the setting device 11 can be set in such a way, for example, in the resting state of the mortar application device 1 that the discharge opening 10 is completely closed, and in the operating state, the adjusting means 11 may be set so that the discharge opening 10 is opened so far that it defines the thickness D of the mortar strip 9; Finally, according to a third setting of the adjustment 11, the discharge opening 10 to be fully open, which is the case in particular when cleaning the mortar applicator 1. For this purpose, the adjusting device 11 can have defined locking points for the adjusting lever 18, so that the width of the gap of the discharge opening 10 can be easily and quickly specified with respect to a defined gap width (eg "fully closed", "fully open "and" opened in discharge gap ").

As can be seen in FIG. 3, the grout application device 1 according to the invention can also have a reducing device 12 for reducing the width B of the mortar strip 9. In this way, the width B of the mortar strip 9 can be matched to the width of the ground 3. This can be done for example by various embodiments of the reducing device 12 or by an adjustment of the reducing device 12 in the mortar application device 1. According to the invention, the reducing device 12 is preferably used along the direction of travel on a side wall of the storage container 4. In this case, the reducing device 12 is preferably bevelled in the storage container 4 to the discharge roller 5 and to the reservoir 4, d. H. the distance of the reducing device 12 decreases to the opposite side wall of the reservoir 4 down in the direction of the discharge roller 5 in the manner of a funnel. Depending on requirements, the reducing device 12 can be used to insert the reservoir 4 for reducing the discharge opening 10 and, for example, to connect it to the housing of the mortar application device 1 via a releasable fixing element (eg a thumbscrew). Thus, the reducer 12 may cover a part of the discharge roller 5 and / or a part of the discharge opening 10, so that the width B of the mortar strip 9 corresponds to the width of the uncovered part of the discharge roller 5 and / or the uncovered part of the discharge opening 10.

As far as the discharge roller 5 is concerned, it is preferably designed in the context of the present invention such that on the one hand it ensures both a good entrainment and conveyance of the mortar 2 and on the other hand ensures a good detachment of the mortar 2 when placed on the ground 3. This can be done, for example, that at least the surface of the discharge roller 5 is made of plastic. For further improvement the mortar discharge, in particular the mortar entrainment by the discharge roller 5, and the uniform detachment of the mortar 2 and the mortar strip 9 during application, this may - if required or required by the application - additionally have a structured or profiled or roughened surface.

In the mortar application apparatus 1 according to the invention, the discharge roller 5 and / or the discharge opening 10 and / or the stripping device 14 are advantageously arranged such that the mortar 2 or the mortar strip 9 separates from the discharge roller 5 at least substantially immediately adjacent to the ground 3. The mortar 2 or the mortar strip 9 is detached essentially tangentially from the discharge roller 5 and / or substantially parallel to the ground 3. Preferably, the mortar strip 9 can be deposited on the ground 3 at least substantially without tension and / or bending. The arrangement of the discharge roller 5 and / or the discharge opening 10 and / or the stripping device 14 is advantageously such that the laying of the mortar strip 9 on the ground 3 in the area of the lot of the axis of rotation of the discharge roller 5 to the ground 3 or in the direction of travel V behind it.

As FIG. 4 illustrates, the first and / or second running axle 6, 7 may have at least one roller 13 for rolling on the ground 3. Advantageously, the first and / or second axle 6, 7, a plurality of rollers 13 in order to ensure a good power transmission and a safe rolling of the first and / or second axle 6, 7 on the webs of the high hole stones. It can be inventively provided that the roller (s) 13 on the first and / or second axle 6, 7 is axially displaceable or are. This makes it possible according to the invention that the running axles 6, 7 can be variably adapted to the formats of the subsoil, in particular the perforated bricks, so that the roller (s) 13 runs on the webs of the perforated bricks or run, resulting in good role characteristics as well leads to a good power transmission to the discharge roller 5. In this context, the material of the roller (s) 13 should be selected so that a good grip or a good "grip" of the roller (s) 13 is ensured with respect to the ground 3. For example, the roller (s) 13 may be made of rubber. It is according to the invention equally possible that the first and / or second axle 6, 7 is formed as a solid or hollow roller or are.

Fig. 1 shows that the first barrel axis 6 and the second barrel axis 7 are arranged in the direction of travel V in front of the discharge roller 5, which causes the mortar 2 in the direction of travel V behind the first barrel axis 6 and the second barrel axis 7 on the ground 3 can be placed. This results in that after placing the mortar 2 on the ground 3, the first barrel axis 6 and the second barrel axis 7 no longer rolls over the discharged mortar 2 or mortar strip 9. In this way, a full-surface coating of the subsoil 3 or the high-hole stones is guaranteed, since in particular a subsequent impressions of the discharged mortar 2 or mortar strip 9 by the traversing in succession arranged axes of rotation 6, 7 is avoided.

In addition, as FIGS. 1, 2 and 4 show, the mortar discharge device 1 according to the invention can also have a stripping device 14 for detaching the mortar 2 from the discharge roller 5. In this context, the stripping device 14 may preferably be arranged in the direction of travel V behind the solder of the axis of rotation of the discharge roller 5 to the ground 3 on the discharge roller 5 fitting. In the context of the present invention, the stripping device 14 may comprise a wire or a sheet. According to a preferred embodiment according to the invention, the stripping device 14 is profile-like and in particular angular profile-like, in particular in the form of an angle or profile sheet configured, so that an additional stabilization of the mortar application device 1 by the stripping device 14 is possible.

As can be seen from FIGS. 1 and 4, the mortar application device 1 according to the invention can additionally have a guide device 15 for guiding the mortar application device 1 along the ground 3. This makes it possible, on the one hand, to securely set up the mortar application device 1 according to the invention prior to commencement of the mortar application on the building ground 3 and to align it therewith. In addition, it can be inventively provided that the guide means 15 is variably adjustable, so that dimensional tolerances of the stones can be compensated. According to an inventive preferred embodiment, the guide means 15 may be a guide rail or roller.

With the help of the mortar application device 1 according to the invention a homogenization of the mortar application is achieved, wherein the discharge of the mortar 2 is independent of the filling amount with respect to the reservoir 4 and independent of the ground 3.

According to a further, second aspect of the present invention, the present invention relates to a method for applying mortar 2, in particular thin-bed mortar, wherein the mortar 2 from the mortar applicator 1 with a rotatable discharge roller 5 in a method of mortar application device 1 by means of a first barrel 6th driven discharge roller 5 is discharged. The inventive method is characterized in that the discharge roller 5 without contact with substantially constant distance A on a building ground 3, such as a row of stones, is moved, in which case rotate the first axis 6 and the Austragswalze 5 in the same direction.

Corresponding to the mortar application device 1 according to the invention, the method according to the invention also preferably involves a series of stones arranged next to one another with respect to the ground 3, wherein the stones are formed, in particular, by hollow stones.

In the method according to the invention, the mortar application device is moved without tilting on the ground 3 by an additional guide element or a running axis 7. It is inventively possible that the discharge roller 5 is additionally driven by a second axis 7. With the aid of the method according to the invention, it is possible for the mortar 2 to be applied on the foundation ground 3 without pressure, or quasi laid up. Thus, it is possible according to the inventive method that the mortar 2 is applied so to speak without contact on the ground 3, so that a pushing in or falling into the mortar 2 is avoided in the cavities of the high-hole stones. It is according to the invention even possible that the mortar 2 without an additional insert, such as a fabric strip or a Foil; can be placed on the raised stones, without sinking into the holes.

With regard to the method according to the invention, the mortar 2 is applied at substantially the same speed V _M as the travel speed V _{v of} the mortar application device 1. Furthermore, according to the inventive method, the discharge roller 5 and the barrel axis 6 are advantageously rotated substantially at the same peripheral speed. The mortar 2 is discharged according to a preferred embodiment of the method according to the invention in the form of a mortar strip 9. It is inventively preferred that the mortar 2 is formed by a particular slit-shaped discharge opening 10 to the mortar strip 9.

For further details and embodiments with respect to the mortar application method according to the invention, reference may be made to the above statements regarding the mortar application device according to the invention, which apply correspondingly with regard to the method.

A number of advantages are associated with the mortar application device according to the invention, which apply correspondingly in relation to the method according to the invention:

The mortar application device according to the invention allows the application of particular thin-bed mortar - regardless of the degree of filling of the mortar application device - with uniform and small thickness, and this - in the case of Hochlochsteinen or Mehrkammersteinen - in a holes or chambers of the stones "covering" or bridging type and Way by contactless laying of the mortar strip on the stones. This avoids that the mortar is pressed into the chambers or in the holes of the stones and sinks unused therein. The thickness of the mortar strip is independent of the roll profile over a wide range adjustable.

Characterized in that the mortar discharge roller is driven in operation of the mortar application device according to the invention in the direction of travel, is - in comparison to a mortar application with a counter-rotating roller, in which the mortar layer is deposited in the direction of travel behind the mortar applicator - achieved an improved shaping of the mortar layer. The co-rotating discharge roller of the mortar application device according to the invention also allows the mortar layer is deposited from only extremely low height on the stones, so that tearing of the mortar layer is avoided in comparison to the prior art. The arrangement and the co-driving of the discharge roller in the mortar application device according to the invention, it is possible, the mortar layer relatively close to walls and pillars - in contrast to an opposing role, which deposits the mortar layer in the direction behind the application device.

Due to the two roller bars mortar application device according to the invention is easy and safe to move. The driving forces are transmitted well.

The mortar application device according to the invention allows a homogenization of the mortar application, regardless of filling quantity and surface. In this way, an excellent mortar application pattern with uniform thickness and width is achieved even in the case of Dünnbettmörtelschichten. Since the discharge roller does not touch the stones and in the operating state of the mortar application device according to the invention more than a mortar layer width is spaced from the mortar to be acted stone row, a "rolling over" or "rolling over" of the mortar layer to be applied is avoided and thereby just a pressing of the mortar layer in the Prevent holes or chambers of the stones.

Further embodiments, modifications and variations of the present invention will be readily apparent to those skilled in the art upon reading the description and practicable without departing from the scope of the present invention.

Claims (15)

Apparatus (1) for applying mortar (2), in particular thin-bed mortar, to a ground (3), such as a row of stones, with a storage container (4) for receiving the mortar (2), a discharge roller (5) for discharging the mortar (2) and a first running axle (6) carrying the device (1),
characterized,
in that the device (1) has an additional guide element or a second running axis (7), so that the device (1) can be moved without tilting on the building ground (3) and the discharge roller (5) is guided over the wall at a substantially constant distance (A) without contact Ground (3) is feasible. Device according to claim 1, characterized in that the discharge roller (5) can be driven by a drive device (8), in particular wherein the drive device (8) couples the first and / or second drive axle (6, 7) to the discharge roller (5) in a gear and / or in particular wherein the drive device (8) has at least one belt, in particular a toothed belt or V-belt, or a chain. Device according to one of the preceding claims, characterized in that the discharge roller (5) can be driven by the first and / or second drive axle (6, 7) and / or that in the process of the device (1) the discharge roller (5) is moved into the same Direction (R) is rotatable as the first and / or second running axis (6, 7). Device according to one of the preceding claims, characterized in that the Mörtelaustragsgeschwindigkeit (V _M ) is substantially equal to the speed (V _v ) of the device (1) and / or that the mortar (2) in the form of a mortar strip (9) can be discharged in particular wherein the layer thickness (D) of the mortar strip (9) is adjustable and / or in particular wherein the distance (A) is at least equal to or preferably greater than the layer thickness (D) of the mortar strip (9), so that the mortar strip (9) without pressure on the ground (3) can be applied. Device according to one of the preceding claims, characterized in that the device (1), in particular the storage container (4), a discharge opening (10), in particular wherein the mortar (2) through the discharge opening (10) to the mortar strip (9) is moldable and / or in particular wherein the discharge opening (10) formed in a slot shape, in particular with adjustable gap width, and / or in particular wherein the discharge opening (10) in the direction of travel (V) before and / or above the axis of rotation of the discharge roller (5) and / or in particular wherein the discharge opening (10) between the discharge roller (5) and the running axes (6, 7) is arranged. Apparatus according to claim 5, characterized in that the discharge opening (10) is delimited by the discharge roller (5) and a stationary part, in particular wherein the stationary part is an adjusting device (11), in particular an adjustable diaphragm, for the layer thickness (D) of the Mortar (2) and the mortar strip (9). Device according to one of the preceding claims, characterized in that the device (1) has a reducing device (12) for reducing the width (B) of the mortar strip (9), in particular wherein the reducing device (12) in the reservoir (4) for reduction a discharge opening (10) can be inserted. Device according to one of the preceding claims, characterized in that the discharge roller (5) or at least its surface layer consists of plastic and / or that the first and / or second axis (6, 7) at least one roller (13) for rolling on the ground (3), in particular wherein the roller (s) (13) on the first and / or second axle (6, 7) is axially displaceable or are. Device according to one of the preceding claims, characterized in that the first and / or second running axis (6, 7) is or are formed as a solid or hollow roller. Device according to one of the preceding claims, characterized in that the first running axis (6) and the guide element or the second running axis (7) in the direction of travel (V) in front of the discharge roller (5) are arranged, in particular so that the mortar (2) in Moving direction (V) behind the first barrel axis (6) and behind the guide element or the second barrel axis (7) on the ground (3) can be placed. Device according to one of the preceding claims, characterized in that the device (1) has a stripping device (14) for detaching the mortar (2) from the discharge roller (5), in particular wherein the stripping device (14) in the direction of travel (V) behind the discharge Lot of the axis of rotation of the discharge roller (5) to the ground (3) on the discharge roller (5) is arranged adjacent and / or in particular wherein the stripping (14) profile-like, in particular angular profile, is, in particular wherein the stripping device (14), the device (1 ) stabilized. Device according to one of the preceding claims, characterized in that the device (1) at least one guide means (15) for guiding the device (1) along the ground (3), in particular wherein the guide means (15) is a guide rail or roller , Method for applying mortar (2), in particular thin-bed mortar, to a building ground (3), such as a row of stones, the mortar (2) being moved by a device (1) with a rotatable discharge roller (5) during movement of the device (1) the discharge roller (5) driven by a first barrel axis (6) is discharged,
characterized,
that the discharge roller (5) without contact with substantially constant distance (A) over a building ground (3), such as a row of stones, is moved, in which case rotate the first barrel axis (6) and the discharge roller (5) in the same direction. Method according to claim 13, characterized in that the device (1) is moved without tilting on the foundation ground (3) by an additional guide element or a second running axis (7) and / or that the discharge roll (5) is additionally moved by the second running axis (7 ) is driven and / or that the mortar (2) without pressure on the ground (3) is applied. A method according to claim 13 or 14, characterized in that the mortar (2) is applied at substantially the same speed (V _M ) as the travel speed (V _v ) of the device (1) and / or that the discharge roller (5) and the Running axes (6) are rotated substantially at the same peripheral speed and / or that the mortar (2) in the form of a mortar strip (9) is discharged, in particular wherein the mortar (2) by a particular gap-shaped discharge opening (10) to the mortar strip (9) is formed.

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