DE102016003659B4 - Device for blasting work - Google Patents

Abstract

Device (1) for blasting work on a surface using a blasting unit (2) for connection to a high-pressure cleaning device, with a holding device (3) which has a receptacle (4) for a blasting unit (2), the device (1) having a displacement device (5) for displacing the holding device (3) in at least one direction, characterized in that the displacement device (5) for the linear displacement of the holding device (3) has at least one guide element (6) which extends parallel to the surface in the operating state and in that the device (1) has a control device (10) for automatically controlling the displacement device (5), the feed speed of the displacement device (5) being adjustable, the device (1) having a chassis (15) for manual and/or self-propelled movement of the device ( 1) in the operating state and/or a framework (35) having a plurality of guide elements (6) and/or a coupling device (56) for coupling to a carrying device.

Description

The present invention relates to a device for blasting work on a surface using a blasting unit, in particular for connection to a high-pressure cleaning device, with a holding device that has a receptacle for a blasting unit. The invention also relates to a method for processing a surface, in particular for carrying out blasting work on the surface, using a device.

In particular, the present invention relates to a device for connection to a high-pressure cleaning device or for use with a high-pressure cleaning device, in which a blasting medium, in particular water, is ejected under high pressure in order to carry out cleaning or removal work on surfaces. Depending on the application, the blasting agent may contain additives, or cleaning agents or other fluids can be used as blasting agent. The pressure range in which the aforementioned high-pressure cleaning devices work usually extends from 50 MPa to 300 MPa. The water or liquid is usually ejected via a jet unit, which can have different nozzles depending on the intended use. Examples include a fan nozzle that expands the jet in one dimension, a rotor nozzle that produces a jet rotating on a cone, or a pendulum nozzle with a jet that oscillates in one direction. For the processing of larger areas, there is, for example, a jet unit in which a number of nozzles rotate on a circular path.

To date, the blasting unit has usually been carried out by hand by the worker performing the blasting work, even on large areas. With regard to a sufficient safety distance for such work and to increase the range, the jet unit is often mounted on a lance. The execution of blasting work under these circumstances is quickly tiring for the worker and, moreover, time-consuming.

Remedy in certain application situations creates a from the DE 10 2014 000 593 A1 or. DE 20 2013 001 422 U1 known device in which the jet unit is supported by a pivotable and telescopic arm. This relieves the worker on the one hand and increases the range from a fixed working position on the other. However, due to its design, the aforementioned known device has the disadvantage that, in order to process larger areas, the worker often has to adjust the jet unit or change the position of the device. This results in the disadvantages of an increased workload for the operator and a high expenditure of time in a similar manner to the purely manual execution of blasting work.

From the U.S. 2012/0153032 A1 a device for de-icing aircraft wings using a blasting medium is also known, in which a blasting unit is positioned on the surface to be blasted by means of an arm carried by a vehicle and is moved by motor.

In the U.S. 2009/0272409 A1 also describes a gantry car wash for cleaning vehicles by means of a high-pressure water jet, with corresponding high-pressure nozzles being attached to a movable carriage and being moved along the vehicle with this.

DE 10 2009 032 907 B3 also discloses a blasting agent-based cleaning device for belts conveyed from a belt processing plant, with jet nozzles rotating on circular paths at high speed and the jets sweeping over the belt through elongated template openings essentially transversely to the direction of movement of the belt.

The object of the present invention is to provide a device for blasting work, by means of which large areas can be processed in a simple and efficient manner.

The above object is achieved by a device according to claim 1. Advantageous developments are the subject of the subclaims.

According to the proposal, it is provided that the device has a displacement device for, in particular, motor-driven displacement of the holding device in at least one direction. The holding device can be moved in at least one direction in a defined manner by means of the displacement device, for example along a rail or a similar guide element. As a result, there is in particular the possibility of moving a jet unit carried by the corresponding receptacle of the holding device along a surface to be processed and at a uniform distance from it.

In addition to the possibility of processing larger surface sections without having to change the position of the entire device, the constant distance between the jet unit and the surface results in the advantage of uniform processing of the corresponding surface section, since the cleaning or removal capacity in the case of blasting work, in addition to the pressure and volume flow of the blasting agent used, depends in particular on the distance between the blasting unit and the surface.

In addition, the exposure time of the blast is a crucial parameter for the cleaning and removal performance when blasting work on surfaces. A movement of the jet unit along the surface at a constant speed therefore contributes to an even cleaning or removal result. Such a constant displacement speed can be ensured in particular by a motorized displacement of the holding device by the displacement device of the device.

The feed rate of the displacement device is adjustable. A feed rate of the displacement device of between 0.08 m/min and 8 m/min has proven to be particularly suitable for a good cleaning or removal result, with each individual value being possible within the specified interval and being regarded as essential to the invention.

The device according to the invention not only allows a more uniform movement of the jet unit in comparison to guiding a jet unit by hand, for example in the form of a lance. In addition, more effective removal is also made possible, since significantly higher pressures or ejection volumes can be achieved. In Germany, a maximum recoil force is permitted for manual operation when blasting, which corresponds to a weight of about 25 kg. However, this value is already exceeded at a pressure of 2500 bar in connection with a flow of approx. 26 l/min. The device according to the invention can absorb significantly larger recoil forces, corresponding to the weight of 60 kg and more. This allows blasting with higher pressure and, in particular, with larger amounts of water, which significantly increases the removal rate.

Alternatively or additionally, the jet unit according to the invention has an oscillating device for the oscillating movement of the jet unit and/or a nozzle of the jet unit. Due to a comparatively rapid oscillation of the jet unit and/or the nozzle and thus ultimately the jet, when the surface to be treated is scanned with the device according to the invention, the jet passes over every point on the surface several times. This significantly improves the cleaning or removal result. In particular, compared to a rigidly arranged nozzle, the working width is increased in comparison to the diameter or the width of the working jet emitted by an oscillating movement transverse to the direction of movement or displacement of the jet unit. This greatly increases the processing speed and promotes a more thorough removal result.

The frequency of the oscillation is preferably so high that when the device travels over a surface or when the holding device is moved with the jet unit, the jet reaches every point on the surface at least once, but preferably several times. On the other hand, moving the jet unit too quickly over the surface with too low an oscillation frequency can result in areas being missed during the surface treatment, resulting in an undesirable removal pattern on the surface. In order to avoid this, the oscillation device is preferably designed to carry out at least 30, preferably at least 100, more preferably at least 200 and particularly preferably at least 300 oscillations/min.

Furthermore, according to the invention, the jet unit has, alternatively or additionally, a pivoting device for pivoting the jet unit and/or a nozzle of the jet unit. Pivoting the jet unit or nozzle allows the jet to hit the surface at an angle rather than perpendicular. The pivoting direction is selected in particular in such a way that the jet runs to a certain extent in the working direction. This means that when the jet device moves due to a movement of the device or a displacement of the holding device, the jet precedes this movement. The angle results in a more homogeneous blasting result and more effective removal, especially when removing concrete.

However, the pivoting does not have to take place exclusively in the direction of movement, but can in principle take place in any direction and in particular also against the direction of movement. The latter is helpful, for example, if a removal is to take place behind reinforcement. This eliminates the need for a complex repositioning of the entire device, so that more efficient work is possible.

The swivel angle is preferably at least 5°, preferably at least 15° and particularly preferably at least 25°. The aforementioned angles are to be measured in relation to the surface normal, i.e. in relation to the resting position of the blasting device or the nozzle in the non-pivoted state.

If the device is designed to oscillate the jet device or a nozzle of the jet unit, then the jet unit and/or the nozzle are pivoted preferably transversely to the direction of oscillation of the jet unit or the Jet. This allows the advantages of an oscillating movement and an acute-angled impingement of the jet on the surface to be combined.

The displacement device can be controlled in a simple manner by an operator by means of at least one control device. The control is either purely manual or partially or fully automated.

In a particularly preferred embodiment, the control device can also be controlled at least partially by means of a remote control. The remote control can work both wired and wireless, in particular by radio and/or by means of infrared signals.

At least one operating element of the control device allows it to be operated by one person. Such an operating element can be used, for example, to manually control the displacement movement of the displacement device or to call up an automatic control program.

In addition to the operating element for controlling the device according to the invention, the control device can also have at least one operating element for controlling a connected high-pressure cleaning device, in particular a high-pressure pump. In addition or as an alternative, it is also possible for the control device to have at least one operating element for controlling the jet unit. This results in the advantage for the operator of being able to control all components or devices required for carrying out blasting work with the device according to the invention from a central location.

In order to be able to control more complex sequences in a simple manner, the control device can have a control device preferably having at least one microprocessor, a programmable logic controller and/or an interface for a programmable logic controller. It is thus possible, in particular, to combine even extensive movement patterns or a large number of work steps into a program that can be called up or activated for execution, for example, by operating an operating element of the control device.

An optional power electronics of the control device also allows the switching and control of power-intensive devices of the device.

According to the invention, it is also possible to design the device completely or at least largely free of electronic components. This is useful, for example, when using the device in potentially explosive areas. In this case, the device works, for example, based on compressed air. Accordingly, the controller may include pneumatic components instead of or in addition to electronic components. Although a completely pneumatically operating design of the device or its automation is very expensive, such a design is nevertheless possible according to the invention.

An interface for a programmable logic controller, which can also be arranged spatially separate from the device, in particular outside a possible danger area, also allows a device designed with few electronics to be controlled by means of a comparatively complex electronic control device.

In a particularly preferred embodiment of the device according to the invention, the displacement device is designed in such a way that the holding device can be displaced in at least two directions, in particular at least substantially perpendicular to one another. Due to the additional displacement direction, which in particular runs transversely to the first displacement direction, the holding device, and thus ultimately the blasting unit, can not only be moved parallel to the surface to be processed, but the distance between the blasting device and the surface can also be adjusted, for example. In addition to the basic adjustment of the working distance of the beam unit to the surface, the displaceability in a second spatial direction allows, for example, the course of an inclined surface to be traced in order to ensure a constant working distance without having to operate the device as a whole in a correspondingly angled position.

With a plurality of guide elements, a particularly stable construction adapted to the respective application situation of the device can be produced. In particular, a framework can be formed from the guide elements, which as such ensures particularly precise guidance of the jet unit and can be arranged in a suitable manner on a surface to edit them.

Ultimately, a large number of modules can be combined with one another in almost any way to produce a device according to the invention. In particular, by combining a plurality of guide elements with one or more jet units, different deployment situations can be taken into account in a flexible manner.

If the surface to be processed cannot be reached directly with the device, the device can be brought into position with a carrying device. The device is preferably coupled to such a carrying device via at least one coupling means. The device can be secured in the coupled state if the coupling means has at least one locking means. The locking means is preferably designed as a clamp and/or screw lock.

For example, a telescopic loader or a forklift that is already available at many locations has proven to be particularly suitable carrying equipment. In order to couple the device to such a stacker, the coupling means is advantageously designed as a receiving opening for stacker prongs. By adapting the receiving opening to a standard fork dimension, the device according to the invention can be universally coupled to a large number of forklifts. In this way, the device according to the invention can be easily transported to the place of use and used there at great heights.

A stop in the area of the coupling means is used for exact positioning of the device relative to the carrying device and prevents the connecting elements on the carrying device from protruding. This prevents the formation of an interfering contour that would stand in the way of free movement of the device and/or the jet unit when processing a surface.

For the processing of sloping surfaces, it is advantageous if the holding device with the receptacle for the jet unit is connected to the displacement device so that it can be pivoted about at least one axis. The axis runs in particular parallel to the displacement direction of the displacement device. This results in the further advantage that by swiveling the jet unit away from the surface, the jet unit is easily accessible for cleaning or maintenance work and for a possible replacement of the jet unit without the entire device having to be moved from its position.

The device preferably has a chassis for easy movement. The device can thus not only be transported to the place of use in a simple manner, but can also be positioned at the place of use itself with little effort, in particular by a single person, and moved on from one surface section to be processed to the next. In addition to a wheel-based chassis, at least one chain can also be provided as an alternative or in addition, which facilitates movement in rough terrain or possibly enables it in the first place.

To further simplify work for the operator and/or to further automate the workflow when carrying out blasting work on surfaces, the device can also be designed to be self-propelled.

By means of an exchangeable and/or extendable guide element, the displacement device can be flexibly adapted to different application situations without having to exchange the entire device for blasting work. The exchangeable and/or extendable guide elements are, in particular, guide rails along which the holding device is moved.

The entire device is preferably composed of a plurality of modules. This achieves further flexibility for different application scenarios. The device can be equipped, for example, with different displacement devices, different control devices and/or different chassis, which can each be combined in different ways to form an overall device for blasting work.

The device is preferably designed so that it can be dismantled. This achieves significantly increased transport stability. In this context, "dismountable" means that essential components of the device can be easily, d. H. can be separated from one another and reconnected with one another in a few simple steps and in particular by a single person. The device can thus be brought to the place of use in a space-saving manner and transported away from there again. Frequently, blasting work is to be carried out indoors, which can only be reached via comparatively small access points, so that the device cannot be brought to the place of use as a whole. In such a situation, the aforementioned ability to be dismantled results in the advantage that the device can be brought to the place of use in parts, where it is ultimately assembled and made ready for operation.

The displacement device is usually driven by a motor, with the drive being based, for example, on an oil-hydraulic principle and/or being electric or electromechanical and/or pneumatic. In addition, it is also possible, particularly when the device is operated with water as the blasting medium, for the holding device to be displaced by water pressure. In particular If the water pressure for moving the holding device and for operating the jet unit is generated by a common high-pressure pump, the coupling of the cleaning or removal capacity of the jet with the advance speed of the jet unit contributes to an even cleaning or removal result.

In order to switch off the drive or switch the direction of displacement when one end of a guide element of the displacement device is reached, the displacement device can have at least one limit switch. A preferably inductive proximity switch in conjunction with an electromechanical drive represents a suitable limit switch. In the case of a hydraulic and/or compressed air-assisted drive, the displacement device can have a switching valve for the aforementioned purpose. This is preferably switched over mechanically by the holding device when the end position is reached on a guide element, so that the propulsion is either switched off or the direction of displacement is switched over.

In connection with an electronic control, it is of particular advantage if at least one sensor is provided for determining the position of the holding device. This allows precise movement control for the jet unit to be achieved. Due to the information about the exact position of the holding device on a guide element, the use of limit switches is not necessary to enable switching off or switching when the end position is reached. For this purpose, position data can be evaluated in order to detect when the end position has been reached. However, the use of limit switches in addition to sensors for position determination reduces the risk of the drive not being switched off or switched over in the end position due to an incorrect measurement or incorrect control. Therefore, in practice, an end position sensor system and/or a mechanical end stop is usually provided.

Particularly good results are achieved with blasting work when the holding device and thus the blasting unit are displaced in an oscillating manner. This is to be distinguished from the oscillation of the jet unit or nozzle, which is achieved by means of an oscillating device as previously described. "Oscillating" here refers to the periodic reversal of the translation direction of the translation device. i.e. when an end point of the displacement range of the displacement device is reached, the direction of movement is reversed so that the holding device is moved to the other end of the displacement range of the displacement device, etc. A strip-shaped section of the surface to be processed is thus repeatedly swept over. If the device is moved perpendicularly to this strip at a suitable speed, an essentially rectangular area with a width of the maximum displacement range of the displacement device and any length can be processed in a simple manner. The device can be moved, for example, by means of the chassis or, in particular, in a self-propelled manner. In order to process the surface without gaps, the further movement speed of the device must be selected in such a way that the strips covered during the outward and subsequent return movement of the jet unit overlap at least in certain areas.

In a particularly preferred embodiment of the device according to the invention, the maximum displacement range of the displacement device is at least 50 cm, preferably at least 100 cm, preferably at least 150 cm, more preferably at least 200 cm, particularly preferably at least 350 cm. A larger displacement range increases the range of the device and thus contributes to more efficient processing of larger areas.

In addition, the maximum displacement range can be variable and/or adjustable. The definition or setting of the limits of the displacement range is preferably possible by means of the control device.

In addition to making work easier and increasing efficiency, the device according to the invention should also support a worker in carrying out blasting work in areas that cannot easily be reached by a person. To increase the range in this regard, the device can be designed in such a way that it reaches a maximum working height of at least 3 m. Structurally, this is achieved by a corresponding structure, as will be explained in more detail below.

As already described above, the working distance of the jet unit from the surface to be processed can be adjusted in the device according to the invention by means of a configuration of the displacement device in which the holding device can be displaced in two spatial directions. Alternatively, the receptacle for a blasting unit on the holding device can be displaceable at least essentially perpendicularly to a surface to be processed in order to adjust the distance between the blasting unit and the surface. A working distance can thus be set in principle, while all degrees of freedom of movement of the displacement device can be used freely for displacement of the holding device.

In the case of non-smooth surfaces in particular, it is advantageous if the device has a device for automatically spacing the jet unit from the surface. This eliminates the frequent manual readjustment of the working distance by the operator.

The distance is preferably determined by means of a sensor. The sensor data can be evaluated in order to set the distance between the jet unit and the surface if deviations of the measured actual value from a predetermined, in particular adjustable, target value for the distance are determined.

In principle, the distance can be determined by means of optical or acoustic methods. However, a tactile, i.e. mechanical, detection of the distance and a radar-based measurement, as is known, for example, from distance sensors in the automotive sector, are particularly preferred. The two last-mentioned methods are less susceptible to interference from shocks or vibrations and from material thrown up and water spray in the area between a corresponding sensor and the scanned surface. In a particularly preferred embodiment, the device has an additional device which is designed for resilient contact with the surface and/or lateral shielding of a working jet emitted by the jet unit. This maintains a constant distance to the surface, which contributes to an even cleaning or removal result. The shielding protects materials and, in particular, people in the area from the working jet bouncing back from the surface with high kinetic energy. Alternatively or additionally, the shielding can also be arranged on the top side in order to intercept material thrown back from the surface.

The additional device can have at least one spring device in order to ensure that the additional device rests against the surface—in particular via at least one roller. Due to the resilient contact, the contour or the relief of a surface is traced in an exact manner, so that an even cleaning or removal result can be achieved even with very uneven surfaces.

The blast media emitted by the blast unit, i. H. usually water, after hitting the surface, it is scattered back from the surface into the environment together with removed substances. In order to avoid or at least reduce contamination of the environment and/or the device, the device can have a suction device for sucking off a blasting agent and/or substances removed from the surface.

As a neutral solvent and because of its other chemical and physical properties, water is particularly suitable as a blasting medium for carrying out blasting work of the type in question. Accordingly, the blasting unit preferably has at least one water jet nozzle.

In principle, however, the device according to the invention can also be used for blasting work with an alternative blasting medium. For this purpose, the blasting unit can, for example, also have at least one particle blasting nozzle, in particular a sandblasting nozzle.

A device, preferably intended for blasting work, has its own inventive importance, which has a distance limiting device in which a running disk is provided which has detents and/or engagement sections and/or a ring of holes with at least one hole arranged on a circumference of the running disk. It goes without saying that such a device, also in combination with one or more of the above aspects, represents an embodiment of a device according to the invention for blasting work.

The feed of the device can be limited to a certain feed distance by means of the distance limiting device. In the case of a step-by-step working method, a reproducible, equal advance is thus ensured in each case. This contributes significantly to an even removal result.

The rotation of the running disk can preferably be limited in steps to a rotation angle between adjacent detents, engagement sections and/or holes of a ring of holes. A certain angle of rotation corresponds to a certain rolling distance on the circumference of the running disk via the diameter of the running disk. A certain distance is thus predetermined by the angle of rotation between two detents, engagement sections and/or holes of a ring of holes.

In particular, a plurality of hole rings or general arrangements of detents and/or engagement sections can be provided on different radii of the running disk. Due to different angles of rotation between the detents, engagement sections and/or holes on a specific radius, different Defined distances to which the rolling movement of the running disc is limited in each case.

In a preferred embodiment, the extension limiting device has at least one fixing means for fixing it. The fixing means is in particular a preferably spring-loaded bolt or the fixing means has such a bolt. For the actual fixing of the distance limiting device, the fixing means can engage in a detent, an engagement section and/or a hole in the running disk. The movement, i.e. H. the rotation of the running disc is braked and/or blocked as a result. As a result, either the movement of the entire device is braked or blocked, or the stopping of the running disk is detected and evaluated, so that a braking or stopping of the movement of the device is initiated from another point.

At least one sensor can be provided in order to determine the state of the running disk and/or the locking means.

Before a further movement of the device, in which the running disk of the travel distance limiting device also moves, the travel distance limiting device or the moving disk must first be released. The release preferably takes place via a release device, which preferably disengages the locking means from a detent, an engagement section and/or a hole in the running disk.

In a particularly preferred embodiment, the release device has at least one cable pull which, if necessary, moves a bolt in particular. The release device can be operated in a simple manner by an operating element for control. In particular, the movement of the cable pull can be controlled by means of such a control element. It is thus possible to control the distance limiting device, which is usually arranged near the ground or near the worked surface, from a central location. This can in particular include control from a control device, the control device preferably not only having an operating element for controlling the distance limitation device and/or the release device, but also for controlling other functions of the device.

If the device has a chassis with wheels, it is expedient if the running disk can rotate about a common axis with at least one wheel of the chassis. In addition, the distance limiting device can be easily coupled to the chassis if the running disk has a diameter which essentially corresponds to the diameter of at least one wheel of the chassis. The distance limiting device can then be arranged in such a way that the corresponding wheel and the running disc move synchronously over the ground or a surface. This represents a particularly simple way of coupling the movement of the device to a distance limiting device and controlling it by means of it.

A surface is usually not processed using a device for blasting work in such a way that the entire surface is covered by the working blast at the same time. Accordingly, stepwise or continuously progressing work is necessary. Partial steps can be coordinated in an optimal manner by means of a distance limiting device, so that the processing takes place in a particularly efficient manner.

For this purpose, the distance between the detents, the engagement sections and/or the holes of a ring of holes can be dimensioned in the distance limiting device in such a way that the rolling distance of the running disc during rotation through the angle between two detents, engagement sections or holes corresponds to the working width of the jet unit of such a device . The working width can be determined by a variety of factors.

These include, on the one hand, the width of the working jet that is emitted by the jet unit or a nozzle of the jet unit. Furthermore, with an oscillating movement of the jet unit or the nozzle and thus of the jet, a specific working width is also predetermined by the oscillating movement. In addition, there are rotating nozzles in which a point-shaped jet is emitted at an angle from a rotatably mounted nozzle in such a way that it is set in rotation. This creates a cone-shaped working jet with a specific width, which depends on the angle at which the jet is emitted from the nozzle. However, there are also other systems, for example those in which one or more nozzles are arranged on a rotating bar and move on a circular path during operation. In particular, the diameter of the movement circle of the nozzles can be regarded as the working width.

A typical working width for a jet unit of the latter type is about 250 mm, while the width of a working jet emitted by a single nozzle is usually between 50 mm and 400 mm.

If the distance limiting device is designed in such a way that with each feed step the device is moved further by a distance that corresponds at least essentially to the working width of the blasting unit, then each section of the surface can be processed exactly once with the device. On the one hand, no positions are skipped by moving the device too far. On the other hand, there is also no multiple processing of points, which would ultimately reduce the efficiency of the surface processing, since it is ensured that the device does not move too little after a work step.

With regard to a higher removal rate, on the other hand, it may also be desirable to run over the surface several times with the blasting unit, so that each point on the surface is processed several times. For this purpose, the displacement device can be controlled in such a way that the jet unit runs over a section of the surface several times before the device is moved on. The number of times each section is processed is preferably adjustable and can in principle be as high as desired. The setting is made in particular via the control device.

A procedural aspect of the present invention lies in the use of the device according to the invention for carrying out blasting work on surfaces. Surfaces to be processed can in particular be indoor or outdoor floors, walls or ceilings.

A method for processing a surface also has its own inventive significance. In particular, this can relate to a method for carrying out blasting work on the surface. According to the invention, a device with which the surface is processed has a displaceable and/or pivotable jet unit.

The efficiency of the processing of the surface is increased or the effort is reduced if both the dispensing of a blasting agent by the blasting unit and the displacement and/or pivoting of the blasting unit are activated by a common operating step. This eliminates the need for the operator to switch between the various sub-steps of processing. Since the activation of the working beam and the guided movement of the beam unit over the surface to be processed are combined in one work or operating step, the susceptibility of the method to errors is also reduced.

Indirect operation by means of a control device also allows working with such pressures and flow rates that cause a recoil force at a level that is inadmissible for guiding the jet unit by hand.

Alternatively or additionally, according to the invention, the processing is carried out in sections, with the device being moved by a feed distance after the processing of one section and before the processing of the next section. This feed distance can be defined in particular and can be limited by a distance limiting device. Furthermore, it can be provided that the movement of the device takes place only after a distance limiting device has been released. Because the feed distance is limited by the distance-limiting device, there is no need to check and, if necessary, readjust the position of the device after it has been moved. This speeds up the workflow overall.

Specifically, the feed distance by which the device is moved after processing a section is preferably at least essentially limited by the rolling distance between detents, engagement sections and/or holes of a running disk of the distance limiting device.

In the working method according to the invention, the running disk is preferably fixed by a fixing means. If, in addition, the state of the locking means is detected, in particular by means of a sensor, this information can be used to control the device. In this way, the process can be further optimized in terms of time and effort and, if necessary, even automated.

• 1 eine perspektivische, schematische Darstellung einer Ausführungsform der erfindungsgemäßen Vorrichtung für die Durchführung von Strahlarbeiten an Böden;
• 2 eine schematische Darstellung der Vorrichtung aus 1 in Vorderansicht;
• 3 eine schematische Darstellung der Vorrichtung aus 1 in seitlicher Ansicht;
• 4 eine schematische Darstellung der Vorrichtung aus 1 in Draufsicht;
• 5 eine perspektivische, schematische Darstellung einer alternativen Ausführungsform der erfindungsgemäßen Vorrichtung zur Durchführung von Strahlarbeiten an Wänden;
• 6 eine schematische Darstellung der Vorrichtung aus 5 in Vorderansicht;
• 7 eine schematische Darstellung der Vorrichtung aus 5 in seitlicher Ansicht;
• 8 eine schematische Darstellung der Vorrichtung aus 5 in Draufsicht;
• 9 eine perspektivische, schematische Darstellung einer weiteren alternativen Ausführungsform der erfindungsgemäßen Vorrichtung zur Durchführung von Strahlarbeiten an Decken;
• 10 eine schematische Darstellung der Vorrichtung aus 9 in Vorderansicht;
• 11 eine schematische Darstellung der Vorrichtung aus 9 in seitlicher Ansicht;
• 12 eine schematische Darstellung der Vorrichtung aus 9 in Draufsicht; und
• 13 eine perspektivische, schematische Darstellung der Vorrichtung aus 1 zusammen mit verschiedenen Anbauteilen zur modularen Anpassung der erfindungsgemäßen Vorrichtung an die jeweilige Anwendungssituation;
• 14 eine perspektivische, schematische Darstellung einer weiteren alternativen Ausführungsform der erfindungsgemäßen Vorrichtung zur Durchführung von Strahlarbeiten an Böden;
• 15 eine schematische Darstellung der Vorrichtung aus 14 in seitlicher Ansicht;
• 16 eine schematische Darstellung der Vorrichtung aus 14 in Draufsicht;
• 17 eine Explosionszeichnungsdarstellung der Vorrichtung aus 14;
• 18 eine perspektivische, schematische Darstellung einer alternativen Ausführungsform einer erfindungsgemäßen Vorrichtung für Strahlarbeiten;
• 19 eine schematische Darstellung der Vorrichtung aus 18 in seitlicher Ansicht;
• 20 eine schematische Darstellung der Vorrichtung aus 18 in Vorderansicht;
• 21 eine schematische Darstellung der Vorrichtung aus 18 in Draufsicht;
• 22 eine perspektivische, schematische Darstellung einer sowohl eine Oszillationseinrichtung als auch eine Schwenkeinrichtung aufweisenden Strahleinheit für eine erfindungsgemäße Vorrichtung;
• 23 eine schematische Darstellung der Strahleinheit aus 22 in seitlicher Ansicht;
• 24 eine schematische Darstellung des Moduls aus 22 in rückwärtiger Ansicht;
• 25 eine perspektivische, schematische Darstellung einer bevorzugten Ausführungsform einer Steuereinrichtung für eine erfindungsgemäße Vorrichtung;
• 26 eine schematische Darstellung der Steuereinrichtung aus 25 in Vorderansicht;
• 27 eine schematische Darstellung der Steuereinrichtung aus 25 in seitlicher Ansicht;
• 28 eine schematische Darstellung der Steuereinrichtung aus 25 in Draufsicht;
• 29 eine Explosionszeichnungsdarstellung der Steuereinrichtung aus 25;
• 30 eine perspektivische, schematische Darstellung einer alternativen Ausführungsform einer Steuereinrichtung für eine erfindungsgemäße Vorrichtung;
• 31 eine schematische Darstellung der Steuereinrichtung aus 30 in Vorderansicht;
• 32 eine schematische Darstellung der Steuereinrichtung aus 30 in seitlicher Ansicht;
• 33 eine schematische Darstellung der Steuereinrichtung aus 30 in Draufsicht;
• 34 eine Explosionszeichnungsdarstellung der Steuereinrichtung aus 30;
• 35 eine perspektivische, schematische Darstellung einer Wegstreckenbegrenzungseinrichtung;
• 36 eine Explosionszeichnungsdarstellung der Wegstreckenbegrenzungseinrichtung aus 35;
• 37 eine schematische Darstellung der Wegstreckenbegrenzungseinrichtung aus 35 in Draufsicht;
• 38 eine schematische Schnittdarstellung eines Bedienelements zur Steuerung der Wegstreckenbegrenzungseinrichtung aus 35 gemäß Schnittebene XXXVIII - XXXVIII aus 37;
• 39 eine schematische Schnittdarstellung der Wegstreckenbegrenzungseinrichtung aus 35 in Draufsicht, geschnitten in einer Ebene senkrecht zur Schnittebene XXXVIII - XXXVIII aus 37;
• 40 eine perspektivische, schematische Darstellung einer alternativen Ausführungsform der erfindungsgemäßen Vorrichtung für Strahlarbeiten;
• 41 eine schematische Darstellung der Vorrichtung aus 40 mit einer zusätzlichen Kopplungseinrichtung in seitlicher Ansicht;
• 42 eine perspektivische, schematische Darstellung eines Führungselementes mit einem eingesetzten Verbindungselement; und
• 43 eine schematische Darstellung der Verbindung zweier Führungselemente mittels eines Verbindungselements.

Further aspects, properties, features and advantages of the present invention result from the claims and the following description of preferred embodiments with reference to the drawing. It shows:

• 1 a perspective, schematic representation of an embodiment of the device according to the invention for carrying out blasting work on floors;
• 2 a schematic representation of the device 1 in front view;
• 3 a schematic representation of the device 1 in lateral view;
• 4 a schematic representation of the device 1 in top view;
• 5 a perspective, schematic representation of an alternative embodiment of the device according to the invention for carrying out blasting work on walls;
• 6 a schematic representation of the device 5 in front view;
• 7 a schematic representation of the device 5 in lateral view;
• 8th a schematic representation of the device 5 in top view;
• 9 a perspective, schematic representation of a further alternative embodiment of the device according to the invention for carrying out blasting work on ceilings;
• 10 a schematic representation of the device 9 in front view;
• 11 a schematic representation of the device 9 in lateral view;
• 12 a schematic representation of the device 9 in top view; and
• 13 a perspective, schematic representation of the device 1 together with various add-on parts for the modular adaptation of the device according to the invention to the respective application situation;
• 14 a perspective, schematic representation of a further alternative embodiment of the device according to the invention for carrying out blasting work on floors;
• 15 a schematic representation of the device 14 in lateral view;
• 16 a schematic representation of the device 14 in top view;
• 17 an exploded view of the device 14 ;
• 18 a perspective, schematic representation of an alternative embodiment of a device according to the invention for blasting work;
• 19 a schematic representation of the device 18 in lateral view;
• 20 a schematic representation of the device 18 in front view;
• 21 a schematic representation of the device 18 in top view;
• 22 a perspective, schematic representation of a jet unit having both an oscillating device and a pivoting device for a device according to the invention;
• 23 a schematic representation of the jet unit 22 in lateral view;
• 24 a schematic representation of the module 22 in rear view;
• 25 a perspective, schematic representation of a preferred embodiment of a control device for a device according to the invention;
• 26 a schematic representation of the control device 25 in front view;
• 27 a schematic representation of the control device 25 in lateral view;
• 28 a schematic representation of the control device 25 in top view;
• 29 an exploded view of the controller 25 ;
• 30 a perspective, schematic representation of an alternative embodiment of a control device for a device according to the invention;
• 31 a schematic representation of the control device 30 in front view;
• 32 a schematic representation of the control device 30 in lateral view;
• 33 a schematic representation of the control device 30 in top view;
• 34 an exploded view of the controller 30 ;
• 35 a perspective, schematic representation of a distance limiting device;
• 36 an exploded view of the distance limitation device 35 ;
• 37 a schematic representation of the distance limiting device 35 in top view;
• 38 a schematic sectional view of a control element for controlling the distance limiting device 35 according to cutting plane XXXVIII - XXXVIII 37 ;
• 39 a schematic sectional view of the distance limiting device 35 in plan view, sectioned in a plane perpendicular to the section plane XXXVIII - XXXVIII 37 ;
• 40 a perspective, schematic representation of an alternative embodiment the device according to the invention for blasting work;
• 41 a schematic representation of the device 40 with an additional coupling device in a side view;
• 42 a perspective, schematic representation of a guide element with an inserted connecting element; and
• 43 a schematic representation of the connection of two guide elements by means of a connecting element.

In 1 the device 1 according to the invention is shown in a preferred embodiment for carrying out blasting work, in particular on floor surfaces. The operation of the device 1 according to the invention in this embodiment is therefore referred to below as ground mode.

The device 1 has a blasting unit 2 as an essential component for carrying out blasting work. The jet unit 2 is in particular connected to a holding device 3 via a corresponding receptacle 4 .

The holding device 3 itself is connected to a displacement device 5 and can therefore be displaced in its position together with the jet unit 2 without having to change the position of the device 1 . The movement of the holding device 3 takes place along a guide element 6 of the displacement device 5.

In the present case, the guide element 6 is designed in particular as a straight perforated rail with an end stop 7 . For example, it is thus possible that, for example, with a motorized drive of the displacement device 5, a gear wheel or a similar component engages in the perforated rail and thus causes the holding device 3 to move.

According to the invention, however, other shapes of the guide element 6 are also possible, for example a bent or curved shape in order to adapt the course of movement when the holding device 3, and thus ultimately the jet unit 2, to different surface shapes or for different application situations.

As an alternative to the perforated rail used here, a toothed rack or a comparable component can also be used.

The guide element 6 of the displacement device 5 can be of different lengths. The guide element 6 preferably has a length of at least 50 cm, preferably at least 100 cm, particularly preferably at least 150 cm. In particular, the guide element 6 can have a length of at least 200 cm, as in the embodiment shown here.

The guide element 6 can in particular be exchanged for a guide element 6 with a different shape and/or length.

Alternatively or additionally, two or more guide elements 6 can also be connected to one another. This is preferably done in the 42 and 43 shown way. A connecting element 59 , which protrudes from the guide element 6 , is introduced at the end into a guide element 6 designed as a hollow profile.

In the embodiment described here, the connecting element 59 is positively connected to the guide element 6 by means of a bolt 60 and is thereby secured. Another guide element 6 can then be slid onto the connecting element 59 and preferably likewise secured with a bolt 60 . In this way, two or more guide elements 6 in the 43 connect manner shown to a longer guide rail, which ultimately works as a single, long guide element 6.

It goes without saying that, in addition to the method of connection shown here by means of a connecting element 59 and positive locking by means of bolts 60, other connection options can also be provided according to the invention. This also includes, in particular, a pure plug-in connection that is designed solely by friction or according to the principle of a snap-in connection.

The holding device 3 is preferably displaced by a motor, since in this way a constant feed rate and an associated uniform cleaning or removal result can be achieved. For this purpose, the displacement device 5 has a drive unit 8 having a motor and preferably a gear for each displacement direction.

As an alternative or in addition, however, the displacement can also take place manually and/or driven by water pressure. In the latter case, the water pressure for driving the displacement device 5 is generated, in particular together with the pressure for operating the jet unit 2, by a common high-pressure pump (not shown).

In particular for work in potentially explosive areas or under water, ie generally in areas in which electronic components components cannot be used, the displacement can preferably also be carried out pneumatically, ie with compressed air. In this case, electronic components in the area of the device are preferably largely or even completely dispensed with. It goes without saying that all the drive concepts, ie electromechanical, oil or water-hydraulic and compressed-air drives, need not necessarily be implemented separately, but can also be implemented in any combination with one another.

The feed speed of the displacement device 5 is preferably between 0.8 m/min and 8 m/min. However, a different range for the feed rate can also be provided, in particular through the use of different gears.

The pressure generated to operate the device 1 for blasting work usually reaches a value of up to 300 MPa.

The blasting medium, which is in particular water, is ejected from one or more nozzles 9 of the blasting unit 2 with correspondingly high energy, the ejection volume being between 10 and 100 l/min, preferably about 40 l/min. With this ejection volume and a pressure of 3000 bar, the recoil force of the working jet is approx. 480 N. This shows an advantage of the device according to the invention, which withstands such a force without any problems. On the other hand, a recoil force of more than 250 N is not permissible for manual operation of a blasting unit when carrying out blasting work.

In the present case, the jet unit 2 has one or more, in particular four, nozzles 9 which are arranged in particular in such a way that they rotate on a circular path during operation. However, the device 1 according to the invention can be operated with almost any possible embodiment of the jet unit 2 .

The jet unit 2 can be pivoted, in particular pivotally connected to the holding device 3 .

The pivoting movement takes place in particular about an axis parallel to the displacement direction of the displacement device 5 . In this way, access to the jet unit 2 is facilitated in order to clean, service or replace it, for example. According to the invention, however, pivoting in any other direction is also possible.

In addition, the jet unit 2 is preferably connected to the holding device 3 so that it can be adjusted at least essentially perpendicularly to the surface to be machined.

In the present embodiment of the device 1, the holding device 3 is displaced by means of the displacement device 5 initially by a corresponding alignment of the guide element 6, in particular parallel to the ground.

In addition, a further guide element 6 is preferably provided, in particular in the form of a perforated rail, preferably with an end stop 7 and/or a further drive unit 8, through which a displacement of the holding device 3 is possible at least substantially perpendicular to the floor. As a result, among other things, the distance between the jet unit 2 and the surface to be treated, that is to say the floor in the present case, can also be adjusted. It is also possible to process an edge or step that is higher than the floor.

Alternatively, the second guide element 6, and thus the further direction of displacement, can also be aligned parallel to the surface to be machined. If the displacement device 5 executes a linear movement in one displacement device and an oscillating movement in the second displacement direction, the result is that an essentially rectangular surface is traversed in a meandering pattern and processed by the blasting unit 2 .

According to the invention, the displacement device 5 can also be constructed with more than two guide elements 6 .

With an orthogonal arrangement of the corresponding displacement directions to one another, this results in free positioning of the beam unit 2 in space with a constant position of the device 1.

In the preferred embodiments of the device 1 illustrated here, a control device 10 is provided for controlling the displacement device 5 and is arranged on the side of the device 1 opposite the jet unit 2 .

The displacement device 5 is controlled manually and/or automatically. The control device 10 preferably has a housing 11 which accommodates electronic components in particular and is preferably carried by a support rod 12 .

In addition, the control device 10 preferably has, in particular on the housing 11 one or more connections 13 for connecting lines 29, which can in particular be energy and/or control lines.

Furthermore, the control device 10 can also contain hydraulic and/or pneumatic components, such as valves or pressure regulators, as an alternative or in addition to electronic components.

In the present case, the control device 10 has in particular one or more operating elements 14 which are preferably combined in a common housing 11 .

The operating elements 14 include, in particular, knobs or keys, for example for selecting operating modes or for calling up control programs.

In particular, an emergency stop button is provided, which in an emergency or in the event of a malfunction of the device 1 contributes to the safety of the operator by shutting down the device 1 in an emergency. Furthermore, the control device 10 can have operating elements 14, in particular in the form of switches, by means of which, for example, components of the device 1 can be switched on and off or the entire device 1 can be activated or deactivated.

In addition, controllers, for example for setting the feed speed of the displacement device 5, and in particular joysticks, which in the present case can be used to manually control the feed movement of the displacement device 5, can also be used as operating elements 14.

In addition to operating elements 14 for controlling the displacement device 5 , the control device 10 can also have operating elements 14 for controlling a connected high-pressure cleaning device (not shown), in particular a high-pressure pump, and/or for controlling the jet unit 2 . As a result, not only the movement of the displacement device 5 can be controlled, but almost the entire system used for blasting work.

In this case, all relevant operating parameters can be controlled centrally from a central control device 10 . In particular, this enables the device 1, or the entire system made up of the device 1 and the high-pressure cleaning device, to be operated by a single person at a safe distance from the working jet.

To move the device 1, a chassis 15 is preferably provided, which can have a longitudinal beam 16, a cross beam 17 and one or more wheels 18, in particular three. Alternatively or additionally, the chassis 15 can also have one or more driving chains. This increases the driving stability of the device, particularly on rough terrain or on slippery ground.

A three-wheel design ensures that the device stands securely and does not wobble during operation. In order to achieve the stability required for blasting work, two of the three wheels 18 in particular are arranged here together with the crossbeam 17 on the side of the device 1 assigned to the blasting unit 2 .

In order to move the device 1 manually, one or more, in particular two, handles 19 are preferably provided in particular in the area of the control device 10 . This makes it possible for the operator of the device 1 to change its position without having to move away from the control device 10 .

A guide element 6 of the displacement device 5 is connected to the cross member 17 of the chassis 15 by means of connecting elements 20 . In the present case, the connecting elements 20 are angle profiles.

The guide element 6 can in particular be made wider than the cross member 17, such as the 2 and 4 can be seen. This makes it possible to work on an edge or step, such as a curb or the like, in that the holding device 3 with the jet unit 2 is moved to the outer edge of the guide element 6 by means of the displacement device 5 so that it can be moved over the wheel 18 protrudes. To process the edge, the device 1 is moved along it by means of its chassis 15 .

In addition, it is also possible to design the device 1 to be self-propelled. For this purpose, one or more wheels 18 can be driven through in 13 illustrated drive wheels 21 are replaced, which generate a propulsion and thus cause an independent movement of the device 1.

Furthermore, if necessary, the drive can take place via one or more travel chains. Due to the comparatively large contact surface with the ground, a travel chain can also ensure safe propulsion of the device 1 if the relief or the surface properties of the ground do not permit the use of wheels 18 or drive wheels 21 .

In addition, the device 1 can be constructed in a modular manner.

Various parts or assemblies of the device 1, such as the jet unit 2, the displacement device 5, the control device 10 and/or the chassis 15, can be replaced by alternative embodiments of the relevant components. In this way, the device 1 can be adapted to different application situations with little effort.

Because the device 1 can be dismantled, it can be transported particularly easily. For this purpose, the connection between the various components is preferably designed in such a way that they can be separated and reconnected in a few simple steps, and in particular by one person.

This makes it possible, for example, in the operational state to store components that run perpendicular to one another and extend long in one direction, such as the longitudinal beam 16, the cross beam 17 and/or the guide elements 6 of the displacement device 5, lying parallel to one another for transport and thus in a space-saving manner .

In addition to the mode described for blasting work on a floor surface, further preferred configurations of the device 1 according to the invention can preferably also be used to set further operating modes. The aforementioned aspects and advantages apply to these in a corresponding manner.

The 5 until 8th show a preferred embodiment of the device 1 for carrying out blasting work on wall surfaces. This operating mode is correspondingly referred to below as wall mode.

By a cross-connecting element 22 in the 1 until 4 Guide element 6 arranged parallel to the floor is now arranged essentially perpendicular to the floor and thus parallel to a wall surface to be machined.

Just like the device 1 in the embodiment in the floor mode, the displacement device 5 in the wall mode shown here preferably has a further guide element 6 which, in the present case, is aligned in particular perpendicularly to the wall. On the one hand, this can be used to adjust the working distance of the jet unit to the surface, i.e. to the wall.

In addition, the additional displacement direction makes it possible to follow or even out an oblique course of the wall surface. This can be necessary, for example, if the device 1 with its chassis 15 cannot be aligned parallel to a wall to be machined. The distance to the wall is adjusted with a displacement direction of the displacement device 5 . The further displacement direction of the displacement device 5 then serves to move the jet unit 2 up and down along the guide element 6 parallel to the wall.

It is an additional advantage if the holding device 3 can be pivoted, in which case in particular a connection of the holding device 3 to the displacement device 5 is provided which can be pivoted about at least one axis. As a result, an optimized alignment of the jet unit 2 to the surface can be achieved in the case of a sloping wall profile.

Another preferred embodiment of the device 1 is in the 9 until 12 shown and is particularly suitable for carrying out blasting work on ceilings. Correspondingly, the operation of this embodiment of the device 1 is referred to as ceiling mode.

The structure that is basically also used in the embodiments for floor and wall processing is preferably modified for the ceiling mode by a structure made up of, in particular, two further supports 23 and additional connecting elements 20 . As a result, on the one hand, the working height of the device 1 is increased and, on the other hand, the displacement device 5 is in particular reversed in such a way that, as a result, the jet unit 2 is arranged upwards, ie facing the ceiling.

In the embodiment shown here for processing ceilings, the displacement device 5 is also designed in such a way that, in particular, it enables a displacement of the holding device 3 with the jet unit 2 in a first displacement direction along a guide element 6, preferably at least essentially parallel to the ceiling, and a displacement of the holding device 3 allowed in a further displacement direction along a further guide element 6, preferably at least substantially perpendicular to the ceiling. In this case, too, a displacement direction of the displacement device 5 is provided for adjusting the distance between the jet unit 2 and the ceiling. The other direction of displacement, parallel to the ceiling, is used to scan the ceiling surface in strips with jet unit 2.

Particularly in the ceiling mode, but also in the wall mode, a working height of at least three meters can be achieved by an appropriate combination of the components of the device 1 in a preferred embodiment of the invention. The dimensions of the supporting structure and the length of the guide are particularly important elements 6 of the displacement device 5 are important.

Due to a modular construction of the device 1, different components can easily be replaced by alternatives. 13 shows next to the in 1 illustrated embodiment of the device 1 more attachments or replacement parts.

As already mentioned, one or more wheels 18 of the chassis 15 can be replaced by drive wheels 21 or, if necessary, by drive chains (not shown), preferably driven, in order to obtain a self-propelled embodiment of the device 1.

In this case, the movement of the device 1 can preferably be controlled from the control device 10 via a corresponding operating element 14, which is in particular a joystick.

In addition, an alternative blasting system 24 is shown which, in addition to a blasting unit 2, has a device for automatically spacing the blasting unit 2 from the surface.

In the alternative jet system 24, the automatic spacing of the jet unit 2 from the surface is achieved in particular by an additional device 25, which is used for resilient contact with the surface.

One or more, in particular two, spring devices 26 and one or more, in particular four, rollers 27 ensure that the additional device 25 rests on the surface. Unevenness of the surface is thereby compensated for, so that there is a constant distance between the jet unit 2 and the surface.

A tactile or mechanical scanning is therefore provided in the illustrated embodiment. Such scanning has the advantage of low susceptibility to vibrations and shocks and to material thrown up or water spray.

Alternatively, but also in principle in any combination with tactile scanning or with each other, the distance can be determined by the device for automatically spacing the beam unit 2 based on radar, or in special cases can be done optically and/or acoustically.

One or more sensors for determining the distance can be used in particular to determine the distance between the jet unit 2 and the surface on the basis of one of the aforementioned scanning methods and to forward the corresponding data to a control device, for example, which, based on the comparison of the measured actual value for the distance with a predetermined target value causes a corresponding adjustment of the distance between the jet unit 2 and the surface. In particular, radar sensors, which are known, for example, from automotive engineering in the form of distance sensors in a driver assistance system, work reliably and with little interference even under conditions with vibrations and high humidity.

By means of the device for automatic spacing of the blasting unit 2, the spacing of the blasting unit 2 from the processed surface can preferably be maintained with an accuracy of +/-5 mm. This contributes to an even blasting result and, in particular, avoids collisions between rotating nozzles and the surface.

The additional device 25 also preferably has a shielding device 28 which is used for lateral shielding of the working beam emitted by the beam unit 2 . In the present case, the shielding device 28 has the form of a hood that surrounds the jet unit 2 comparatively closely and in the present case serves in particular to protect the device 1, above all the guide elements 6, from excessive contamination by material thrown up. An alternative embodiment of a shielding device 28 in the assembled state is shown in FIGS 14 until 17 shown.

However, other embodiments of the shielding device 28 are also possible, for example a shell completely surrounding the jet unit 2 and the additional device 25 .

Furthermore, in 13 alternative embodiments of the jet unit 2 are shown. These differ from the jet unit 2 shown in the installed state in particular in terms of their arrangement and number of nozzles 9.

The various jet units 2 can preferably each be connected to the holding device 3 via the receptacle 4 .

When replacing the blasting device 2, care must also be taken to connect a high-pressure line to the blasting unit 2. If required, the jet unit 2 can be connected to the control device 10 via a control line, not shown, so that the jet unit 2 can be controlled via a corresponding operating element 14 .

Not shown, but possible in principle according to the invention, is also a suction device Device for extracting a blasting medium and/or substances that are removed from a surface as a result of the blasting work. Such a suction device is preferably provided in the area of the jet unit 2 or is integrated into it.

The embodiments of the device 1 shown here for blasting a surface are primarily designed for operation with water as the blasting agent. For this purpose, the jet unit 2 has in particular at least one water jet nozzle.

In principle, however, it can also be provided that the blasting unit 2 is designed in such a way that it has at least one particle blasting nozzle, in particular a sandblasting nozzle.

The above and following advantages of the various embodiments of the device 1, in particular in connection with the displacement device 5, ultimately result in blasting work independently of the blasting agent used.

In the 14 until 17 a further embodiment of the device 1 according to the invention is shown. The illustrated embodiment basically corresponds to that in FIGS 1 until 4 embodiment shown in an extended stage. Here, in particular, the control device 10 has been expanded by further elements and a shielding device 28 has been added, which in the present case is designed as a rubber protective element. In this case, too, the device 1 is designed for blasting work on a floor surface.

For this purpose, the jet unit 2 is connected to the displacement device 5 via the holding device 3 in such a way that a working jet is emitted downwards.

The jet unit 2 is designed here as a rotating nozzle system. In such a plurality of nozzles 9 are arranged on a rotating beam. The rotation is caused either by the counter pressure when ejecting a working jet, or there is a mechanical drive.

At the in the 14 until 17 The embodiment shown is compared to that in FIGS 1 until 4 shown embodiment of the device 1 is also provided a shielding device 28.

If the side assigned to the jet unit 2 is defined as the front side of the device 1, the shielding device 28 is arranged above the jet unit 2 on the one hand and also in some areas obliquely on the other hand. In this way, in particular, an operator at the control device 10 is protected from the working jet bouncing back from the surface and from removed material being removed.

Optionally, the shielding device 28 can be supplemented by a suction device (not shown) or possibly replaced. In this case, the suction device is preferably arranged in the area between the shielding device 28 and the jet unit 2 .

At the in the 14 until 17 In the embodiments of the device 1 shown, a cable guide 30 is also provided, which also serves as a hose guide. In the present embodiment, this has in each case a guide rod 31 with guide eyes 32 arranged on the guide rod 31 , in particular for a connecting line 29 . The connecting line 29 is for the sake of clarity in the representations of 14 until 17 Not shown.

The device 1 has in the 14 until 17 shown embodiment also an alternative embodiment of the control device 10. In this case, the housing 11 is additionally surrounded by a housing frame 33 . Furthermore, the housing 11 has a cover flap 34 in front of the operating elements 14 . Due to the preferred configuration of the housing 11 shown here, it offers protection for the control device 10 and for an operator from particles flying around as a result of the removal process.

The embodiment of the control device 10 shown here is characterized by increased robustness and is therefore also suitable for use under increased stress due to conditions such as those that can exist, for example, on a construction site or during demolition work in the course of a renovation. The housing frame 33 protects the housing 11 of the control device 10 from impacts and falling objects. The cover flap 34, on the other hand, protects the control device 10 and the operating elements 14 from dust and splashing water.

At the in the 18 until 21 In the illustrated embodiment of the device 1 according to the invention, a plurality of guide elements 6 are provided which, together with cross members 17, form a framework 35.

The present configuration of the device 1 does not require a chassis 15 . It goes without saying that due to the high degree of modularity of the device 1, a chassis 15 can optionally be provided, with the components described above preferably being used in modules can become. In the embodiment shown here, the device 1 is suitable, for example, as a stationary device for blasting work on the surface of changing components that can be arranged under the device 1, ie in particular under the blasting unit 2, or can be moved under it.

Furthermore, the device 1 designed as a frame 35 has sufficient stability to be carried by a carrying device and transported to the place of use.

The device 1 is preferably brought up to a surface to be processed in the state coupled to the carrying device and used for blasting work. Such a surface can be, for example, a wall on which the frame 35 is upright, ie opposite to that in FIGS 18 until 20 shown position by an angle, in particular a right angle, is positioned tilted. According to the top view 21 corresponds in this case to the frontal view of the wall with the device 1 arranged in front of it 40 referenced, in which the device 1 is shown in the erected position.

In order to reach great heights with the device 1, as is often required in particular for working on walls, a coupling device 56 for coupling to a carrying device that can reach the required working height can be provided. The coupling device 56 can be designed in particular as a receptacle for forklift tines 57 of an industrial truck or have such, as is the case in FIGS 40 and 41 embodiments shown is the case. The position of corresponding stacker prongs 57 is indicated in each case. The carrying device is not shown for the sake of clarity.

A stop 58 in the area of the coupling device 56 preferably ensures exact positioning of the device 1 relative to the support device, without an interfering contour occurring as a result of components of the support device protruding through the device 1 or the frame structure 35 and in particular beyond the jet unit 2 .

In the embodiment according to 41 the device 1 has a coupling device 56 which is arranged on the side of the frame 35 which faces away from the jet unit 2 and protrudes therefrom. This makes it possible to couple the device 1 to a carrying device, for example an industrial truck or forklift truck, in such a way that the working jet is ejected from the jet unit 2 essentially transversely to the direction of travel or movement of the carrying device. This makes it possible, in particular, to move the carrying device parallel to a wall along the latter, while the displacement device 5 causes the blasting unit 2 to move up and down, with the result that the wall is processed over its entire surface.

For a secure hold, in particular during operation of the device 1, the device 1 is preferably secured by means of a locking means of the coupling device 56. This is in particular a clamp lock. However, another form, for example a screw connection, can also be used to secure the coupling.

When operating in the 18 until 21 The device 1 shown is used to move the holding device 3 with the jet unit 2 by means of the displacement device 5 over the surface. In principle, the two-dimensional guidance of the jet unit 2 by means of the displacement device 5 makes it possible to control every point on the surface within the working area specified by the frame 35 . By covering the entire surface with the jet unit 2 using the displacement device 5, the surface in the region of the frame 35 can be completely processed without moving the frame 35 or the device 1 as such.

Although in principle any pattern or general movement sequences can be implemented by means of the displacement device 5, a meandering movement has proven to be particularly suitable for efficient processing of the surface.

The jet unit 2 has in the present embodiment according to 18 until 21 a plurality of nozzles 9 arranged on a plate rotating during operation. From the diameter of the circle of movement of the nozzles 9, as in 21 as can be seen, a working width B of a partial section 36 in the form of a strip in the present case.

Depending on the nature of the jet unit 2, different factors result in a different working width B of a section 36. For example, in the case of a nozzle 9 designed as a fan nozzle, the jet width when it hits the surface is an essential criterion for the working width B of the jet unit 2 in this case.

End stops 7 are provided on the guide elements 6 in particular at the ends. As in the 18 , 19 and 21 can be seen, a stop 7 can also be almost be arranged anywhere on a guide element 6 in order to limit the movement of the displacement device 5 or the holding device 3 .

The end stops 7 can simply be designed as a mechanical stop that blocks the movement of the holding device 3 with the jet unit 2 . In addition, however, it is also possible and preferred, if required, for a limit switch to be provided in particular in the area of a limit stop 7 .

A limit switch can be designed in particular as an inductive or capacitive proximity switch. When the holding device 3 approaches the end position, the switch is activated.

Either directly or indirectly via a control device, which can be integrated in particular in the control device 10, the movement of the holding device 3 is then stopped by means of the displacement device 5 or the direction of displacement is reversed.

If corresponding limit switches are arranged at both ends of a guide element 6, with the limit switches each being designed to reverse the displacement direction of the holding device 3, this results in an oscillating movement of the holding device 3 with the jet unit 2 on the guide element 6 of the displacement device 5. The oscillating movement superimposed perpendicularly to this linear movement, the result is a zigzag path of the control unit 2 over the surface.

A pause in the movement of the holding device 3 when the end position is reached, followed by a movement step transverse to the direction of oscillation, after which the stopped movement of the holding device 3 on the guide element 6 is continued, ultimately resulting in the aforementioned meandering movement.

As an alternative or in addition to an electronic limit switch, a switchover valve can also be provided, preferably in the area of a limit stop 7, which can switch or switch over, for example, a hydraulic or compressed air-driven drive by mechanical switching. What was said above in relation to an electronic or electric limit switch applies analogously in the case of a switching valve.

In the 22 until 24 a jet unit 2 in the form of a module with an oscillating device 38 and a pivoting device 39 is shown in various views.

The oscillating device 38 causes an oscillating movement of the nozzle 9. The oscillating movement of the nozzle 9 takes place in particular in such a way that even when the jet unit 2 with the holding device 3 is moved by means of the displacement device 5, each processed point on the surface is repeatedly discharged by the nozzle 9 Working beam is run over.

The oscillating movement of the nozzle 9, which is brought about by the oscillating device 38, should not be confused with the previously mentioned oscillating movement of the holding device 3 with the jet unit 2 on the guide element 6 of the displacement device 5. It is understood that, in principle, both oscillating movements can be provided separately as well as together.

In the present case, the oscillation device 38 is designed in such a way that the nozzle 9 is moved in an oscillating manner. However, as an alternative or in addition, an oscillation device 38 can also be provided, which moves the jet unit 2 as such on the holding device 3 in an oscillating manner.

The oscillation frequency of the oscillation device 38 is preferably at least 30, preferably at least 100, more preferably at least 200, particularly preferably at least 300 oscillations per minute and is in particular freely adjustable.

The oscillation frequency can be set in particular via an operating element 14 of the control device 10 .

The oscillation device 38 has a drive 40 which moves the nozzle 9 via a gear 41 .

In the present exemplary embodiment, the pivoting device 39 tilts the nozzle 9 transversely to the direction of oscillation. In principle, however, tilting by means of the pivoting device 39 can also take place in any direction or even in several directions.

Similar to the oscillating device 38, the pivoting device 39 in the present exemplary embodiment acts only on the nozzle 9 of the jet unit 2. According to the invention, however, the jet unit 2 as such can also be pivoted by means of the pivoting device 39 on the holding device 3. This can also be done in addition to pivoting the nozzle 9 .

In the assembled state in the 22 until 24 jet unit 2 shown, the nozzle 9 is preferably in Direction of movement of the device 1 or tilted in the direction of displacement of the holding device 3. A working jet emitted from the nozzle 9 thus precedes the jet unit 2 . The cleaning or removal result is significantly improved by the acute angle at which the jet hits the surface.

In this case, the particularly freely selectable swivel angle is preferably at least 5°, preferably at least 15° and particularly preferably at least 25°. At such an angle, a particularly homogeneous blasting result can be produced and effective removal can be achieved.

The pivoting device 39 can preferably be controlled with respect to the direction and/or the amount of the pivoting angle by one or more operating elements 14 of the control device 10 .

It goes without saying that the jet or the nozzle 9 and/or the jet unit 2 can be pivoted not only in the direction of movement, but also, for example, in the opposite direction. In this way, in particular, removal can take place behind a reinforcement without having to reposition the device 1 in a costly manner.

The 25 until 34 show different preferred embodiments of a control device 10.

The show 25 until 29 the control device 10 in an embodiment in which it also in the case of the 14 until 17 shown embodiment of the device 1 according to the invention is used. Due to the comparatively compact size of the control device 10, it can be mounted on or on the device 1 by means of a support rod 12 and moved together with it.

The control device 10 or its housing 11 is protected from mechanical damage by a housing frame 33 . In the embodiment shown here, the operating elements 14 are located behind the housing frame 33 and are also covered by a cover flap 34 when not in use. The cover flap 34 protects the control device 10 from dust when not in use.

In the embodiment shown, up to four motors in particular can be controlled by means of the control device 10 .

In addition, in the case of automatic control by the control device 10, it is also possible for a work sequence to be initially set via the operating elements 14, which subsequently runs independently or automatically under the control of the control device 10. In this case, the cover flap 34 can also be arranged in front of the control device 10 or the operating elements 14 during operation, so that they are protected from spray water and removed material being removed. In particular, fully automatic processing of a surface can take place through a corresponding configuration of the device 1 and the control device 10 as well as through a corresponding setting and/or programming.

For automation, the control device 10 preferably has a control device having at least one microprocessor and/or a programmable logic controller, for example in the form of an electronic circuit. In addition, an interface for a programmable logic controller can be provided as an alternative or in addition.

Such a control device of the control device 10 preferably also evaluates data from a sensor for determining the position of the holding device 3. Compared to the pure use of limit switches, this enables more precise control of the displacement device 5.

A control element 14 designed as a grip pistol 37 is provided on both sides of the central control elements 14 . Such a grip gun 37 can be used in particular to control the blasting device 2 from the control device 10 .

In the 30 until 34 an alternative embodiment of the control device 10 is shown. In comparison to the previously described embodiment, this is evidently a larger configuration of the control device 10. The embodiment of the control device 10 shown serves in particular to control up to six motors.

This makes it possible, for example, to integrate power electronics into the control device 10 . In this way, for example, a drive for a self-propelled embodiment of the device 1 according to the invention can be controlled. Since a comparatively large amount of power has to be switched in this case, correspondingly dimensioned components are required, which ultimately lead to a larger volume and a higher weight of the control device 10 .

The control device 10 in the embodiment shown here is therefore designed separately from the device 1 . It goes without saying that the Controller 10 also in accordance with the embodiment 30 until 34 can be coupled to the device 1 .

Wheels 18 are provided in the lower area of the housing frame 33 so that the control device 10 can be easily transported despite its dimensions and weight.

Instead of two wheels 18, as in the example shown here, a larger number of wheels 18 can also be provided, so that the control device 10 does not have to be tilted for transport, but for example when operating with the device 1, but for example at a safe distance this, can be moved without further ado.

In particular, the control device 10 in the 30 until 34 The embodiment shown can have a control device with a microprocessor and/or a programmable logic controller and an interface for such a programmable logic controller.

A complete computer system for the computer-protected control of the device 1 according to the invention is preferably integrated into the control device 10 .

If the displacement device 5 is driven by compressed air, the control device 10 can have pneumatic components. In this case, in particular, exclusively pneumatic or generally non-electronic components can be provided if the operating conditions require this, as is the case, for example, in potentially explosive areas. In addition, the control device 10 can also have pneumatic and/or hydraulic components in addition to electronic components.

Basically, ie in particular in the case of the 25 until 29 and 30 until 34 shown embodiments, the control device 10 may be remotely controllable. In this case, remote control preferably takes place by radio and/or by cable.

In order to connect a remote control to the control device 10, the control device 10 preferably has a corresponding interface. It is thus possible to remotely control the device 1 from a safe distance when it is used, for example, in areas that are not accessible to people due to contamination with dangerous substances or due to other environmental conditions.

In 35 a distance limiting device 42 is shown, which has a running disk 43 in a running disk housing 44 . The running disk 43 in turn has a plurality of rings of holes 45 each having a plurality of holes 46 . As an alternative or in addition to the holes 46, the running disk 43 can also have other detents and/or general engagement sections, for which the following explanations apply analogously.

These can be embedded in the running disk 43 or, like the holes 46 , represent openings in the running disk 43 . Equally, such detents or engagement sections can also be formed so as to protrude from the running disk 43 .

Furthermore, it is not absolutely necessary for the detents or engagement sections to be provided on the flat sides of the running disk 43 . According to the invention, an arrangement on the edge 47 of the running disk 43 is also possible.

During use, the running disk 43 rotates about an axis 48 which is guided through the running disk housing 44 . In the embodiment shown here, a pin 49 prevents the running disk housing 44 from rotating when the distance limiting device 42 is moved with a device 1.

The rotation of the running disk 43 can be limited in steps to the angle of rotation between adjacent holes 46 of a ring of holes 45 .

In the embodiment of the distance limiting device 42 shown here, a fixing means 50 is provided for this purpose. In the present case, the fixing means 50 has a spring-loaded bolt 51 in particular.

When the distance limiting device 42 moves, the bolt 51 rests against the flat side of the rotating running disk 43 and engages in a hole 46 when it is reached, as in particular in FIG 39 is shown. The running disk 43 is thus blocked in its rotation. Whenever a hole 46 is reached, the bolt 51 engages in it again and thus triggers a blocking of the running disk 43 or the distance limiting device 42 .

The locking means 50 is preferably, as in the 35 and 36 can be seen, adjustable to different radii of the running disk 43. In this way, in the present case, a circle of holes 45 is selected with a certain distance between the holes 46. Different distances between the holes 46 on different circles of holes 45 mean that different angles of rotation per rotation step of the running disk 43 can be set.

If necessary, the running disk 43 can also be replaced by another running disk 43 with a different configuration of the detents, engagement sections and/or holes 46 .

Instead of a bolt 51, the fixing means 50 can also have a hook or some other means for blocking the running disk 43.

In addition, it is not absolutely necessary for the bolt 51 or another means to block the running disk 43 to engage in detents, engagement sections and/or holes 46 in the running disk 43 . A corresponding effect is achieved, for example, when the bolt 51 or a corresponding component comes to rest on a projection protruding from the running disk 43 or engages in detents arranged on the edge or engages behind them.

Furthermore, a sensor can be provided which can detect the state of the fixing means 50 . The data from the sensor can then be evaluated, for example, to automate the distance limiting device 42 or a device 1 with a distance limiting device 42 . In addition, it is also possible to use the sensor data to output a signal to an operator about the state of the locking means 50, in particular via the control device 10 of a device 1.

If the running disk 43 is blocked, in the present case the bolt 51 must be disengaged from the hole 46 in order to enable the running disk 43 to move on to the next hole 46 . The distance limiting device 42 must therefore generally be released.

A release device 52 is provided for this purpose, which serves in particular to release the locking means 50 . In the embodiment shown here, this is done by means of a cable 53.

In the present case, the cable pull 53 is designed as a Bowden cable, but it can also be replaced by another control means, such as a control rod or the like.

In the present case, the bolt 51 is moved by means of the cable 53 in such a way that it disengages from the hole 46 . As a result, the rotation of the running disk 43 is released.

The distance limiting device 42 can be released by an operator using an operating element 14 for controlling the release device 52 . The operating element 14 for control is designed as a grip pistol 37 in the present case. Alternatively or additionally, however, any other operating element 14 can also be provided. A pull button or a corresponding operating lever is also suitable, in particular, for controlling a cable pull 53 .

The structure of the handle pistol 37 of the release device 52 is shown in FIG 38 recognizable. When a grip lever 54 of the grip pistol 37 is actuated, the core 55 of the cable pull 53 is pulled, ie it is moved in the direction of the release device 52 . As a result, the bolt 51 of the locking means 50 is moved by the running disk 43 a sufficiently large distance so that it disengages from the hole 46 .

If the handle lever 54 is released, the spring-loaded bolt 51 moves again in the direction of the running disk 43 and in the process moves the core 55 of the cable pull 53 accordingly.

If the running disk 43 is rotated further before the handle lever 34 is released, the hole 46 is now moved further so that it is no longer opposite the bolt 51 . When the release device 52 is released by releasing the handle 34, the bolt 51 can therefore only move so far in the direction of the running disk 43 that it comes to rest against the flat side thereof. Only when a new hole 46 of the selected circle of holes 45 is reached when the running disk 43 is rotated further can the bolt 51 engage in it again and block the movement of the running disk 43 .

It goes without saying that the above applies analogously to a configuration of the distance limitation device 42 other than that presented here. Ultimately, according to the invention, it is preferably the case that the running disk 43 of the distance limiting device 42 blocked by a locking means 50 is released again by a release device 52 . Here, in particular, a component is disengaged from a detent or, in general, from an engagement section, so that further movement of the running disk 43 or the distance-limiting device 42 is made possible. When a next engagement section is reached, the movement of the distance limiting device 42 is blocked again.

If the aforementioned steps are repeated several times in succession, the travel distance limiting device 42 moves over a total distance, with the total distance being divided into movement steps that correspond to the angular spacing of the engagement sections, detents and/or holes 46 of the running disk 43.

A device 1, which can be used in particular for blasting work, can be equipped with a distance limiting device 42, as is the case with the embodiment of the device 1 according to the invention according to FIG 14 until 17 is shown. The distance limiting device 42 is arranged there in the area of a wheel 18 of the chassis 15 . The diameter of the running disk 43 preferably corresponds at least essentially to the diameter of the wheel 18. In addition, the running disk 43 rotates in particular on a common axis 48 with the wheel 18. In this way, the distance limiting device 42 can be easily integrated into the structure of the device 1.

However, it is also possible to arrange the distance limiting device 42 in such a way that the running disk 43 has a larger or smaller diameter than a wheel 18 of the device. Instead of rotating about a common axis with the wheel 18, the distance limiting device 42 can also be arranged, for example, in such a way that the running disk 43 is in contact with the running surface of the wheel 18 or, if appropriate, a driving chain. The rolling distance of the pulley 43 and the wheel 18, i. H. the feed distance of the device 1 during its movement, do not necessarily have to be the same in this case. Ultimately, the distances between the engagement sections of the running disk 43 have to be adjusted accordingly, with the result that the movement of the device 1 is limited to a specific feed distance.

In the case of a device 1 for blasting work, the use of a distance limiting device 42 can now be such that an operator first uses the operating elements 14 of the control device 10, in particular one of the handle pistols 37 in the 14 until 17 embodiment shown, performs or activates a work step. This can be, for example, activating the jet unit 2 and the displacement device 5, preferably in a joint operating step.

A sub-area of the surface to be machined is now machined by the work step. The partial section can in particular be in the form of a strip. However, almost any other form of the subsection is also possible, this ultimately depending on the specific application situation.

After the partial section has been processed, the operator moves the device 1 further by a certain feed distance. The feed distance of the device 1 is limited by the distance limiting device 42 . Ultimately, the feed distance corresponds to the rolling distance of the running disk 43 of the travel limit device 42 with the angular spacing of the detents, engagement sections and/or holes 46 of the running disk 43.

When a predefined feed distance is reached, the running disk 43 is blocked by the locking means 50 in the distance limiting device 52. The overall movement of the device 1 is thereby blocked. The operator can then activate the next work step and thus process a surface in sections with the device 1 according to the invention.

After processing the next subsection and before further advancement with the device 1 , the operator must first release the distance limiting device 42 via the release device 52 in the present example. For this purpose, a further grip pistol 37 is provided in the area of the control device 10 as an operating part 14 for controlling the release device 52 . By activating the handle pistol 37, the operator can unblock the distance limiting device 42 and thus the device 1 for further movement.

In this way, the size or width of the partial sections is defined in each case by the distance limiting device 42 . This eliminates the need for the operator to precisely reposition the device 1 before each work step.

It is particularly preferred that the feed distance of the device 1 corresponds in each case to a working width B of the jet unit 2 . The working width B is ultimately decisive for the width of the individual partial sections 36 when processing a surface. It depends on a number of factors, for example the type and size of the nozzle 9 used, its arrangement and its distance from the surface.

By appropriately selecting the angular distance between two detents, engagement sections and/or holes 46 of the running disk 43, the rolling distance of the running disk 43 between two blocking positions can be dimensioned in such a way that the feed distance of the device 1 corresponds to the working width B of the jet unit 2.

In this way it is possible, in particular, to dimension the feed distance in such a way that it corresponds at least essentially to the working width B of the blasting unit 2 . Efficient processing of the surface is thus possible without double processing of a point, but also without leaving a point unprocessed.

For a particularly thorough cleaning or removal result, the feed distance can also be significantly smaller than the working width B of the blasting unit 2 . If the feed distance is less than half the working width B of the jet unit 2, the sections 36 overlap in successive processing steps, so that multiple processing of each point on the surface takes place.

Reference List

1

contraption

2

jet unit

3

holding device

4

Recording

5

shifting device

6

guide element

7

end stop

8th

drive unit

9

jet

10

control device

11

Housing

12

support bar

13

Connection

14

control element

15

chassis

16

side members

17

cross member

18

wheel

19

Handle

20

fastener

21

drive wheel

22

cross connector

23

carrier

24

alternative beam system

25

additional equipment

26

spring device

27

role

28

shielding device

29

connection line

30

cable routing

31

guide rod

32

eyelet

33

case frame

34

cover flap

35

frame

36

section

37

grip gun

38

oscillation device

39

swivel device

40

drive

41

transmission

42

distance limitation device

43

running disc

44

pulley housing

45

perforated ring

46

Hole

47

edge

48

axis

49

cones

50

locking means

51

bolt

52

release device

53

cable pull

54

grip lever

55

Soul

56

coupling device

57

forklift tines

58

attack

59

fastener

60

bolt

B

working width

Claims (31)

Device (1) for blasting work on a surface using a blasting unit (2) for connection to a high-pressure cleaning device, with a holding device (3) which has a receptacle (4) for a blasting unit (2), the device (1) having a displacement device (5) for displacing the holding device (3) in at least one direction, characterized in that the displacement device (5) for the linear displacement of the holding device (3) has at least one guide element (6) which extends parallel to the surface in the operating state and in that the Device (1) a control device (10) for automatically controlling the displacement device (5), the feed speed of the displacement device (5) being adjustable, the device (1) having a chassis (15) for manual and/or self-propelled movement of the device (1) in the operating state and/or a frame (35) having a plurality of guide elements (6) and/or a coupling device (56) for coupling to a carrying device. device after claim 1 , characterized in that the jet unit (2) has an oscillating device (38) for the oscillating movement of the jet unit and/or a nozzle (9) of the jet unit (2), and/or that the jet unit (2) has a pivoting device (39) for Pivoting the jet unit (2) and/or a nozzle (9) of the jet unit (2). device after claim 1 or 2 , characterized in that the control device (10) is at least partially controllable by means of a remote control. Device according to one of the preceding claims, characterized in that the control device (10) has at least one operating element (14) for operating the control device (10), with preferably at least one operating element (14) for controlling a connected high-pressure cleaning device, in particular a high-pressure pump and/or the jet unit (2) is provided, in particular at least one operating element (14) being provided for the joint control of the displacement device (15) and the jet unit (2). Device according to one of the preceding claims, characterized in that the control device (10) has power electronics, at least one control device preferably having at least one microprocessor, a programmable logic controller and/or an interface for a programmable logic controller. Device according to one of the preceding claims, characterized in that the displacement device (5) is designed in such a way that the holding device (3) can be displaced in at least two directions, in particular at least substantially perpendicular to one another. Device according to one of the preceding claims, characterized in that the coupling device (56) has at least one locking means and/or the coupling device (56) has a receptacle for stacker tines (57) and/or that in the area of a coupling device (56) there is at least one stop ( 58) is provided. Device according to one of the preceding claims, characterized in that the holding device (3) is pivotably connected to the displacement device (5) about at least one axis parallel in particular to the direction of displacement of the displacement device (5). Device according to one of the preceding claims, characterized in that the oscillation device (38) is designed to carry out at least 30, preferably at least 100, more preferably at least 200, particularly preferably at least 300 oscillations per minute. Device according to one of the preceding claims, characterized in that the jet unit (2) and/or the nozzle (9) can be pivoted by means of the pivoting device (39), preferably transversely to an oscillation direction of the jet unit (2) and/or the nozzle (9). , The swivel angle preferably being at least 5°, preferably at least 15°, particularly preferably at least 25°. Device according to one of the preceding claims, characterized in that the displacement device (5) has at least one exchangeable and/or extendable guide element (6), in particular a perforated rail. Device according to one of the preceding claims, characterized in that the device (1) has a modular structure and/or is composed of a plurality of modules, in particular guide elements (6) and/or jet units (2) and/or is designed to be dismountable Device according to one of the preceding claims, characterized in that the displacement device (5) is driven electromechanically, pneumatically and/or hydraulically, in particular by means of water pressure, and/or that the displacement device has at least one limit switch and/or at least one switching valve and/or at least one Sensor for determining the position of the holding device (3). Device according to one of the preceding claims, characterized in that the displacement of the holding device (3) takes place in an oscillating manner and/or that the advance speed of the displacement device (5) is between 0.8 m/min and 8 m/min. Device according to one of the preceding claims, characterized in that the maximum displacement range of the displacement device (5) is at least 50 cm, preferably at least 100 cm, preferably at least 150 cm, particularly preferably at least 200 cm, and/or that the device (1) is designed in such a way that it reaches a maximum working height of at least 3 m. Device according to one of the preceding claims, characterized in that the receptacle (4) for a jet unit (2) on the holding device (3) can be displaced at least essentially perpendicularly to a surface to be processed in order to adjust the distance between the jet unit (2) and the surface . Device according to one of the preceding claims, characterized in that the device (1) has a device, preferably having at least one sensor for determining the distance, for automatically spacing the beam unit (2) from the surface, with the distance determination being preferably tactile, optical, acoustic and/or or radar-based. Device according to one of the preceding claims, characterized in that the device (1) has an additional device (25) which is designed for resilient contact on the surface and/or lateral and/or top-side shielding of a working beam emitted by the beam unit (2). is, wherein the additional device (25) preferably has at least one spring device (26) in order to ensure that the additional device (25) rests on the surface, in particular via at least one roller (27). Device according to one of the preceding claims, characterized in that the device (1) has a suction device for sucking off a blasting medium and/or substances removed from the surface. Device according to one of the preceding claims, characterized in that the jet unit (2) has at least one water jet nozzle and/or at least one particle jet nozzle, in particular a sand jet nozzle. Device (1) for blasting work, in particular according to one of the preceding claims, characterized in that the device (1) has a distance limiting device (42) for limiting the feed of the device (1) to a specific feed distance with a running disk (43), wherein the running disk (43) has detents and/or engagement sections and/or a ring of holes (45) with at least one hole (46) arranged on a circumference of the running disk (43). device after Claim 21 , characterized in that the rotation of the running disk (43) can be limited in steps to a rotation angle between adjacent detents, engagement sections and/or holes (46) of a ring of holes (45). device after Claim 21 or 22 , characterized in that the distance limiting device (42) has at least one fixing means (50), in particular with a preferably spring-loaded bolt (51), for fixing the distance limiting device (42) and, preferably, at least one sensor for determining the state of the running disk (43) and/or the fixing means (50), the fixing means (50) preferably engaging in a detent, an engagement section and/or a hole (46) of the running disk (43) to fix the distance limiting device (42). Device according to one of Claims 21 until 23 , characterized in that a release device (52), preferably having at least one cable pull (53), is provided for releasing the fixed distance limiting device (42), the release device (52) for releasing the distance limiting device (42) being connected to the distance limiting device ( 42) interacts so that a locking means (50) is disengaged from a detent, an engagement section and/or a hole (46) of the running disk (43), and/or that the release device (52) has an operating element (14) for control , In particular for moving the cable (53). Device according to one of Claims 21 until 24 , characterized in that the control device (10) has at least one operating element (14) for controlling the distance limiting device (42) and/or the release device (52). Device according to one of Claims 21 until 25 , characterized in that the running disk (43) can rotate about a common axis (48) with at least one wheel (18) of the chassis (15) and/or that the diameter of the running disk (43) essentially corresponds to the diameter of at least one wheel ( 18) of the chassis (15). Device according to one of Claims 21 until 26 , characterized in that the The distance between the detents, the engagement sections and/or the holes (46) of a ring of holes (45) is dimensioned in such a way that the rolling distance of the running disk (43) when rotating through the angle between two detents, engagement sections and/or holes (46) to the Working width (B) of the jet unit (2) corresponds. Use of a device according to one of the preceding claims for processing a surface, preferably for blasting work on the surface. Method for processing a surface, in particular for carrying out blasting work on the surface, using a device (1) according to one of Claims 1 until 27 , characterized in that the device (1) has a displaceable and/or pivotable jet unit (2), with both a delivery of a blasting medium by the jet unit (2) and a displacement and/or pivoting of the jet unit (2) by a common operating step and/or that the processing takes place in sections, with the device (1) being moved by a feed distance after the processing of a sub-section (36) and before the processing of the next sub-section (36), the feed distance being controlled by a travel distance limiting device ( 42) is limited, and/or wherein the movement of the device (1) takes place in each case after a distance limiting device (42) has been released. procedure after claim 29 , characterized in that the feed distance by which the device (1) is moved after the processing of a partial section (36) is at least essentially determined by the rolling distance of a running disk (43) of the travel distance limiting device (42) between detents, engagement sections and/or holes (46) of the running disc (43) is limited. procedure after Claim 30 , characterized in that the running disk (43) is fixed by a fixing means (50), the state of the fixing means (50) preferably being detected, in particular by means of a sensor.

Images