EP2754507A1 - Mobile high pressure cleaning unit - Google Patents

Abstract

The mobile high pressure cleaning apparatus (20) has an undercarriage (120) that is arranged with a booth (100). A high pressure nozzle is connected with a high pressure terminal (110). A positioning device is provided for positioning the high pressure nozzle within the booth. The booth is comprised with a lockable feed aperture. The booth is comprised with extensible portion for fixing positioning device which is transverse to a longitudinal direction of the booth.

Description

The invention relates to a high-pressure cleaning device. High-pressure cleaning devices typically have a high-pressure nozzle to which a high-pressure port is assigned in terms of flow. For example, a high-pressure pump can be connected via the high-pressure connection, which acts on the high-pressure nozzle with a medium under high pressure. As such a medium, for example, water comes into question, which in the application and cleaning fluids can be added. Under high pressure is typically understood a pressure of at least 100 bar, with applications in the field of industrial cleaning often pressures of about 2500 bar are used.

High-pressure cleaning devices are used for example for cleaning various components of industrial plants or power plants. This is often done during downtime of such equipment, which is why a rapid, yet efficient cleaning is of great importance. In the field of industrial cleaning, however, problems may arise at the high pressures already described due to the exit velocity of water from the high-pressure nozzle, which is about twice the speed of sound. At such high speeds, sound pressure levels of about 126 dBa are already reached due to the sonic boom, which are not only problematic for the operator in terms of occupational safety, but can also cause noise pollution far beyond the affected operation.

Known solutions to this problem are based on moving the cleaning process into a cabin in which an employee works. This actuates, for example, a lance to which the high-pressure nozzle is attached. This can reduce the noise pollution of the environment. However, this also means that the employee, who works inside the cabin, a greatly increased sound pressure level acts, which can not be lowered by common hearing protection measures to a tolerable level.

Another known device has a mini excavator, on the boom of a high-pressure nozzle is attached. Although this increases the distance of the high pressure nozzle to the operator and achieves a certain degree of mobility, the problem of the noise pollution of the environment can not be solved in this way.

It is therefore an object of the invention to provide a high-pressure cleaning device which is mobile and yet provides effective protection of both the operator and the environment from the resulting sound.

This is achieved by a high-pressure cleaning device according to claim 1. Advantageous embodiments can be taken, for example, the dependent claims.

The invention relates to a mobile high-pressure cleaning device. This has a chassis on which a cabin is arranged. Furthermore, it has a high pressure nozzle, which is fluidly connected to a high pressure port. In addition, it has a positioning device to which the high-pressure nozzle for positioning the high-pressure nozzle is mounted inside the cabin. The cabin also has a closable loading opening.

The high-pressure cleaning device according to the invention is mobile applicable and allows the cleaning of the material to be cleaned within the cabin, which offers soundproofing of both the operator and the environment. In the high-pressure cleaning device according to the invention, the operator no longer has to work inside the cabin, but instead can remotely control the positioning device and thus the cleaning process. This protects the operator and other persons in the neighborhood from the high-pressure nozzle even before the dangerous jet.

The chassis can be designed for example as a truck trailer. Alternatively, however, it could be, for example, the chassis of a truck, in which case the car can be designed directly as a trailer of a truck, which also has a cab and a motor.

The high pressure nozzle may be implemented in several known ways. For example, the high-pressure nozzle may be formed to generate a spot beam. Alternatively, it may also be configured to generate a lateral beam. The high-pressure nozzle can also be designed such that it is set in rotation by the jet and thus the jet likewise rotates. This can be advantageous, for example, for cleaning pipes.

The high pressure port is used to connect the high pressure nozzle to a high pressure source. As such a high pressure source, for example, a high pressure pump is considered. If the chassis is designed as a truck trailer, such a high-pressure pump may for example be mounted on a truck, which is designed for pulling the truck trailer. For example, if the cab is already on the truck, the high pressure port may be connected to a high pressure pump on the same truck. The truck may also contain a tank for cleaning fluid. Likewise, a tank for wastewater and / or a water treatment plant can be located on the truck.

The high pressure port can also be used to connect to an external high pressure source, such as one in an industrial plant anyway existing central supply of water to be connected under high pressure.

The positioning device serves to position the high-pressure nozzle at the point where it is needed for cleaning various objects. The positioning device is advantageously designed so that it can be controlled from outside the cabin. For this purpose, for example, a camera or an array of cameras can be used. However, sensors such as ultrasonic sensors, which can measure a distance of the positioning to various objects, but can be used for control.

The positioning device can also be designed such that it automatically passes through a predetermined path. Thus, for example, the path can be programmed once for a large number of cleaning steps of similar objects to be carried out in succession, so that subsequently no further intervention of the operator is necessary. The programming can be done, for example, by the operator entering the cabin with the high pressure off and by means of a manual control moving the positioning means so that later, i. when the high pressure is switched on, the desired cleaning effect can be achieved.

The positioning device is preferably a robot. This can be a commercially available robot. Such is usually adjustable by six axes and has a control with a 6D mouse. This allows exact positioning of the high pressure nozzle using here, for example, six degrees of freedom.

The location of the high pressure nozzle within the cabin where it can be positioned by the locator effectively prevents sound from escaping water or other cleaning substance from the high pressure nozzle from exposing the operator or the environment to excessive noise pollution.

The closable loading opening serves to introduce material to be cleaned into the cabin. For this purpose, it can be opened and closed again after the feed to achieve the desired sound insulation.

The high-pressure cleaning device according to the invention not only ensures that the operator and the environment are protected from the development of sound, but also that contamination of the environment due to spray water, which occurs involuntarily when cleaning by means of high pressure, is avoided. All of the water used for cleaning, as well as any particles of dirt that are removed from the objects to be cleaned, remain inside the cabin and can be collected for disposal or reprocessing.

According to a preferred refinement, the cabin has an extendable part assigned to the positioning device, which can be extended transversely to a longitudinal direction of the cabin to increase the interior of the cabin laterally. Thus, an increase in the space available for cleaning can be achieved without exceeding the permissible outside dimensions of a truck trailer.

Preferably, the positioning device is movable on longitudinal rails extending along the longitudinal direction of the car within the cabin. Thus, an additional degree of freedom for the positioning can be obtained, which allows the positioning of the high-pressure nozzle at even more different locations. This also makes it possible to use the full length of a truck trailer, which may be for example about 10 m, for cleaning. Thus, the number of necessary feed operations can be reduced.

Particularly preferably, the longitudinal rails are designed as linear guides and enclose the positioning device such that the positioning is only one-dimensionally movable. Such linear guides are from the Known in the art. They are for example designed so that the positioning device runs on rollers in a three-sided enclosing, one-sided open profile, with a short distance above the rollers, a limitation of the profile runs so that the rollers can not escape upwards. Advantageously, two such linear guides are used in parallel, which together lead the positioning. Thus, the positioning is effectively protected against any tilting, which typically occurs in the field of industrial cleaning forces, which correspond to a mass of about 150 kg, that care must be taken when positioning the high-pressure nozzle that the positioning does not tip over but this can be positioned so that the best possible cleaning effect is achieved.

Preferably, the longitudinal rails are arranged on a bottom portion of the extendable part. This makes it possible to install the positioning device so that it is located in the extended state of the extendable part at the edge of the then enlarged cabin. Thus, the available space within the cabin can be ideally exploited. The material to be cleaned can end positioned laterally next to the longitudinal rails, so that the positioning device can be moved along the longitudinal extent of this material. With appropriate mobility of the positioning, the high pressure nozzle can then be spent on all the necessary places to clean the material to be cleaned.

According to a preferred development, the high-pressure cleaning device further comprises a charging device, which serves to feed the cabin with material to be cleaned through the charging opening. Thus, the loading of the cabin can be facilitated. Preferably, such a loading device is a carriage which can be driven from inside the cab to outside the cab and back so that it can be loaded outside the cab and then spend the material to be cleaned in the cab.

Further preferably, the high-pressure cleaning device has a number of transverse rails, which run transversely to the longitudinal direction of the cabin and on which the charging device is mobile. If the loading device is a carriage, the carriage can thus be moved along the transverse rails. These cross rails, like the already mentioned longitudinal rails, can be designed as linear guides which provide a merely one-dimensional mobility of the loading device.

According to one embodiment, the high-pressure cleaning device has at least a first set of transverse rails and a second set of transverse rails, a first vehicle being assigned to the first set of transverse rails and a second vehicle assigned to the second set of transverse rails. The first carriage and the second carriage are further preferably connected together to form a common charging device. Thus, a larger contact surface can be provided for to be cleaned material, the material to be cleaned is then spent with simultaneous insertion of two carriages in the cabin. The connection of the two carriages can be done for example by a flat plate, which is suitable for the purpose mentioned.

Preferably, in a retracted state of the extendable part, a bottom portion of the extendable part is arranged above the cross rails. This allows a simple design and a good seal of the cabin down, where adjacent to the cross rails sealing devices can be provided, which reliably seal the cabin downwards.

According to a preferred development, the cabin has a foldable part on the longitudinal side opposite the extendable part, which part closes the feed opening in a folded-up state and forming an outer wall of the car, and further extending laterally in a folded down condition a bottom portion of the car, the loading port being released. With such a hinged part, a simple and reliable closure of the charging opening can be achieved.

According to an advantageous development rails are attached to the inside of the cabin facing side of the hinged part, which laterally extend the cross rails in the folded-down state of the hinged part. This can be provided in a simple way a way to push a feeder, such as a trolley, over the interior of the cabin to the outside and there to load with material to be cleaned.

Preferably, the cabin is designed as a container, on whose one longitudinal side the extendable part is formed, and on whose longitudinal side opposite this longitudinal side, the hinged part is formed. This achieves a simple structural design.

Preferably, the high pressure cleaning device further comprises a remote control for remotely controlling the positioning means from outside the cabin. This allows easy and safe operation.

In order to carry the weight, which rests on a hinged part or on an extendable part in the folded-down or extended state, they can be provided with respective supports. These may for example be formed foldable or they may also be designed removable, so that they can be mounted before performing a cleaning job and dismantled after its completion.

Preferably, the positioning device, in particular, when it is a robot, a rubber protection on which the positioning surrounds and prevents contamination of the positioning during the cleaning process. The rubber protection can be made inflatable. As an alternative to rubber protection, other types of protection, in particular of other materials, may also be used.

Figur 1

zeigt eine Hochdruckreinigungsvorrichtung von außen sowie einen zugehörigen LKW.

Figur 2

zeigt eine schematische Schnittansicht einer Hochdruckreinigungsvorrichtung.

Figur 3

zeigt die Hochdruckreinigungsvorrichtung von Figur 2 in anderen Zuständen.

Figur 4

zeigt eine schematische Schnittansicht einer Hochdruckreinigungsvorrichtung in einer anderen Ansicht.

Figur 5

zeigt schematisch eine abgewandelte Form einer Hochdruckreinigungsvorrichtung.

Further features and advantages of the invention will be apparent to those skilled in the art upon consideration of the embodiments described below with reference to the accompanying drawings.

FIG. 1

shows a high-pressure cleaning device from the outside and an associated truck.

FIG. 2

shows a schematic sectional view of a high pressure cleaning device.

FIG. 3

shows the high pressure cleaning device of FIG. 2 in other states.

FIG. 4

shows a schematic sectional view of a high pressure cleaning device in another view.

FIG. 5

schematically shows a modified form of a high-pressure cleaning device.

FIG. 1 shows a high-pressure cleaning device 20, which is attached to a truck 10. This is done via a drawbar 105. On the truck 10, a high pressure pump 15 and a tank 18 are mounted for cleaning fluid, which serves to supply the high pressure cleaning device 20 with water under high pressure.

The high-pressure cleaning device 20 has a container-designed cabin 100, which is mounted on a chassis 120. This is in the present case designed as a truck trailer. For connecting the high-pressure cleaning device 20 to a high-pressure source, for example to the already mentioned high-pressure pump 15 on the truck 10, the high-pressure cleaning device 100 has a high-pressure connection 110. At this example, a suitable hose can be connected by means of an adapter. Furthermore, the high-pressure cleaning device 20 has a remote control 115 which allows external control.

By performing on the chassis 120, the high pressure cleaning device 20 is mobile. It can be pulled by means of the truck 10 to any desired location. The total length of such an embodiment is typically about 20 m. The sole length of the trailer is typically about 10 m.

FIG. 2 shows a sectional view through the cabin 100 on the chassis 120. The cabin 100 has a feed opening 133 which is closed by a hinged part 130. The foldable part 130 forms part of an outer wall of the car 100.

Within the cabin 100 is a loading device in the form of a trolley 140. The trolley 140 is mounted on two cross rails, of which in the figure of Fig. 2 only a first cross rail 145 is visible. In order to be displaceable on the cross rails, the carriage 140 has a first roller 146 and a second roller 147. With the two rollers 146, 147 of the carriage 140 is one-dimensionally displaceable along the cross rails. The carriage 140 may be used to drive material to be cleaned into the interior of the cab 100. It will be shown later how this can be done.

The cab 100 further includes an extendable member 150. In the state which in FIG. 2 is shown, the extendable part 150 is not extended, but completely retracted. So it closes flush with the rest to the outside Exterior wall of the cabin 100 from. Since in the illustrated state, the folding part 130 is folded up and not projecting outward, the high pressure cleaning device 20 in this state has external dimensions, which are suitable for transport on public roads. The high-pressure cleaning device can thus be moved to a place where a cleaning is to be performed.

The extendable part 150 can be moved along several rails, as shown in FIG Fig. 2 only a rail 155 can be seen. In order to be moved along this rail, a third roller 156 and a fourth roller 157 are provided. This makes it possible to transfer the extendable member 150 to an extended state, which will be described later with reference to FIG Fig. 3 will be described. Thus, the interior of the cabin 100 can be expanded.

The extendable part 150 is arranged above the transverse rails 145 of the trolley 140, which means in particular that a bottom section of the extendable part 150 is arranged above the transverse rails 145. This allows for an advantageous sealing of the lower area between the extendable part 150 and the floor of the car 100.

Within the extendable part 150, a positioning or manipulation device is provided, here in the form of a movable robot 200 which operates as a manipulation device. The robot 200 is arranged displaceably on a first longitudinal rail 205 and a second longitudinal rail 206. As will be shown later, the robot 200 is also connected to a high pressure nozzle which serves to perform a high pressure cleaning operation. The high-pressure nozzle is attached to the arm of the robot 200, which generally has a plurality of axes of movement for performing a manipulation movement. It is therefore sufficient if the robot 200 can be moved linearly as a whole. The longitudinal rails 205, 206 are accordingly designed as linear guides, on which the Robot 200, which may preferably be rotatable about a vertical axis, along the longitudinal direction of the car 100 can be moved. During use of the high-pressure cleaning device 20, this enables the positioning of the robot 200 at the point at which a cleaning process takes place or the robot 200 with its arm carrying the high-pressure nozzle is to carry out a cleaning process.

FIG. 3 shows the high-pressure cleaning device 20 in other states than in FIG. 2 ,

In contrast to Fig. 2 is in the representation of Fig. 3 the extendable part 150 extended. Thus, the robot 200 is outside the room, which in the representation of Fig. 2 forms the interior of the cabin 100. The robot 200 can be moved along the two longitudinal rails 205, 206, which allows its positioning at a required location. At the same time, because of the arrangement of the robot 200 in the extendable part 150, the entire interior of the car 100 can be laterally of the extendable part 150, ie substantially the space in the dimensions which in the retracted part 150 retractable part 150 form the outside dimensions of the car 100 Introduction of material to be cleaned are used.

In order to securely receive the weight of the robot 200 and other elements, a support 159 is mounted in an outer portion of the extendable member 150. This serves to support the extendable part 150 in addition to the chassis 120 on the outside. Thus, a break of the extendable part 150 or a tilting of the high-pressure cleaning device 20 due to weight shift can be prevented.

The foldable part 130 is in FIG. 3 shown in three different states.

First, it is shown in the same state as it is in the display of Fig. 2 occupies. It closes the feed opening 133.

Second, it is shown in a partially lowered state in which it occupies an angle of about 45 ° to the horizontal. This state is to be understood as a transitional state, which may occur, for example, during installation or when the transportability of the high-pressure cleaning device 20 is established.

Third, the folding part 130 is shown in a state in which it extends a bottom surface of the cabin 100.

Thus, arranged on the floor of the car 100 cross rails 145 are extended, by appropriately designed on the folding part 130 expanding crossbars. This makes it possible to drive out the carriage 140 to the outside on the fold-down folding part 130. Even such a condition is in FIG. 3 shown, namely the one in which the carriage 140 is located on the far left on the folding part 130.

If the carriage 140 is in its illustrated position on the hinged part 130, this can be loaded with material to be cleaned. For this purpose, for example, an external crane can be used. Subsequently, the carriage 140 can be moved into the interior of the cabin 100, which, for example, the in Fig. 3 shown right state of the carriage 140 corresponds. Subsequently, the mobile part 130 can be folded up again. The material to be cleaned, which is located on the carriage 140, can then be cleaned by means of a high-pressure nozzle connected to the robot 200. For this purpose, the robot 200 can be moved along the two longitudinal rails 205, 206 to the desired positions.

Due to the completed construction of the cabin 100, which arises again when the hinged part 130 is brought back into its folded position and thus closes the loading opening 130, it is achieved that the noise arising during cleaning largely remains inside the cabin 100 and only in one acceptable level. For this purpose, the cabin 100 sound-absorbing materials. Furthermore, it is also prevented that water used for cleaning and dirt detached from the material to be cleaned injected uncontrollably over a larger area. Rather, the water and the dirt within the cabin remain 100 and can be collected there. The water can then be disposed of or recycled, for example.

As well as the charging process, the folding part 130 can also be folded down to remove the cleaned material after completion of the cleaning process. For this purpose, the folding part 130 is again in its folded-down position, as in Fig. 3 shown, brought. Subsequently, the carriage 140 is moved to its illustrated left position, which makes it possible to remove the cleaned material, for example by means of a suitable crane.

In order to assist the foldable member 130 in its extended condition and to allow the application of higher loads to the carriage 140, a support 139 is provided on an outer side of the foldable member 130. This supports - similar to the support 159 - the hinged part 130 in addition to the chassis 120 outside and thus prevents breakage of the hinged part 130 or tilting of the Hochdruckreiniguns device 20 due to excessive externally applied loads.

FIG. 4 shows a further schematic sectional view of the car 100, wherein in particular the robot 200 can be seen in greater detail. The robot 200 has a first arm 210 and a second arm 215. The first arm 210 and the second arm 215 are movable relative to each other, as well as the first arm 210 is movable on a main body of the robot 200, which in turn is linearly movable and preferably rotatable about a vertical axis.

At the end of the second arm 215, a high-pressure cleaning nozzle 220 is arranged. This is fluid with the high pressure port 110, which in FIG. 1 was shown connected. The high-pressure nozzle 220 thus makes it possible to inject a cleaning medium supplied through the high-pressure port 110, for example water, under high pressure onto material to be cleaned. Thus, a cleaning effect can be achieved and thus the material to be cleaned can be cleaned.

The robot 200 is movable along the already mentioned longitudinal rails 205, 206, wherein in the illustration of Fig. 4 only one of the two longitudinal rails, namely the longitudinal rail 205 can be seen. This makes it possible to position the robot along the longitudinal extent of the car 100 corresponding longitudinal extent of the receiving him movable retractable part 150 at different locations. If the robot 200 is a conventional robot with six degrees of freedom, the mobility along the longitudinal rails 205, 206 results in an additional degree of freedom.

In the presentation of Fig. 4 In addition to the already mentioned rail 155, on which the extendable part 150 can be moved, four additional rails 151, 152, 153, 154 are shown. Also on these runs the extendable part 150 between its retracted and its extended state. Thus, the extendable part 150 is supported along the longitudinal direction of the car 100 in a plurality of places. This prevents bending of the extendable part 150 along the longitudinal direction of the car 100.

Furthermore, in FIG. 4 to see that not only the already discussed carriage 140, but still another carriage 141 is present. Of the Further carriages 141, like the already mentioned carriages 140, can be displaced on corresponding transverse rails and can also be pushed onto the fold-out part 130 in the folded-down state of the fold-out part 130 and thus pushed out of the interior of the cab 100. Thus, the further carriage 141 can be used to spend to be cleaned material in the cabin 100 and remove it again. The explanations regarding the trolley 140 also apply to the further trolley 141.

FIG. 5 shows a schematic plan view of the high pressure cleaning device 20 in a slightly modified compared to the aforementioned embodiment embodiment. It should be understood that in the presentation of Fig. 5 the extendable part 150 is in its extended state and that the foldable part 130 is in its folded down state.

First, at the front, in FIG. 5 left side of the cab 100 to see the drawbar 105, with which the high pressure cleaning device 20 can be attached to a truck. On the in Fig. 5 shown upper side, which corresponds to the right side of the high pressure cleaning device 20 seen in the direction of travel of the trailer, the two longitudinal rails 205, 206 are shown, along which the robot 200 can be moved. Also visible on this side are the rails 151, 152, 153, 155 along which the extendable member 150 can be displaced between its retracted condition and its extended condition. Thus, in the present case only four such rails 151, 152, 153, 155 are provided, whereas in the previously discussed embodiment, five such rails 151, 152, 153, 154, 155 were provided.

Also in a modification of the previously discussed embodiment, the execution of Fig. 5 a connection 148 between the two carriages 140, 141 which can be connected to one another thereby, resulting in a common large carriage. The connection 148 is different expressed together with the two carriages 140, 141 a continuous surface with which the interior of the cabin 100 can be charged with material to be cleaned. This may be advantageous both for use in cleaning a variety of smaller items, as well as for use in cleaning a particularly large and bulky item.

Claims (15)

Mobile high-pressure cleaning device (20), comprising a chassis (120) on which a cabin (100) is arranged,
a high pressure nozzle (220) fluidly connected to a high pressure port (110),
and a positioning device (200), by means of which the high-pressure nozzle (220) attached thereto is movable within the cabin (100),
wherein the cabin (100) further comprises a closable feed opening (133). High-pressure cleaning device (20) according to claim 1,
wherein the car (100) has an extendable part (150) containing the positioning device (200), which can be extended transversely to a longitudinal direction of the car (100) laterally to enlarge the interior of the car (100). High-pressure cleaning device (20) according to one of the preceding claims,
wherein the positioning device (200) is designed as a manipulation device for manipulating the high-pressure nozzle (220) attached thereto, preferably a robot. High-pressure cleaning device (20) according to one of the preceding claims 2 or 3,
wherein the positioning device (200) is movable on longitudinal rails (205, 206) running along the longitudinal direction of the car (100) and arranged on a bottom section of the extendable part (150) within the car (100). High-pressure cleaning device (20) according to claim 4,
wherein the longitudinal rails (205, 206) are formed as linear guides and enclose engaging members of the positioning device (200) such that the positioning device (200) is only one-dimensionally movable. High-pressure cleaning device (20) according to one of the preceding claims,
wherein the car (100) is associated with a loading device (140, 141), preferably a carriage, for loading the car (100) with material to be cleaned, and in that the loading device (140, 141) enters the car via the feed opening (133) (100) in or out of this can be moved out. High-pressure cleaning device (20) according to claim 6,
wherein a number of transverse rails (142, 143, 144, 145) are provided, which extend transversely to the longitudinal direction of the car (100) and on which the loading device (140, 141) is movable. High-pressure cleaning device (20) according to claim 7,
wherein at least a first set of crossbars (145, 142) and a second set of crossbars (143, 144) are provided, the first set of crossbars (145, 142) being a first carriage (140) and the second set of crossbars (145). 143, 144) are associated with a second carriage (141) and wherein the first carriage (140) and the second carriage (141) are connectable to form a common large loading trolley. High-pressure cleaning device (20) according to any one of claims 7 or 8, wherein in a retracted state of the extendable member (150), a bottom portion of the extendable member (150) above the cross rails (142, 143, 144, 145) is arranged. High-pressure cleaning device (20) according to one of the preceding claims, wherein the cabin (100) at the extendable part (150) opposite longitudinal side a flap (130) which closes the feed opening (133) in an upwardly folded state and an outer wall of the cabin ( 100) and which in a folded-down state, with the loading opening (133) released, laterally widens a bottom portion of the cabin (100). High-pressure cleaning device (20) according to claim 10,
wherein on the inside of the cabin (100) facing side of the flap (130) rails are mounted, which laterally extend the cross rails (142, 143, 144, 145) in the folded down state of the flap (130). High-pressure cleaning device (20) according to one of the claims,
wherein the cabin (100) is formed as a container, on one longitudinal side of which the extendable part (150) is formed, and on whose longitudinal side opposite the longitudinal side the flap part (130) is formed. High-pressure cleaning device (20) according to one of the preceding claims, wherein a remote control (115) for remote control of the positioning device (200) from outside the car (100) is provided. High-pressure cleaning device (20) according to one of the preceding claims, wherein the chassis (120) is designed as a truck trailer, which is attachable to a truck (10). High-pressure cleaning device (20) according to claim 14,
wherein on the truck (10) a high-pressure pump (15) is arranged, which is connectable to the high-pressure port (110) for supplying a cleaning liquid under high pressure, and on which further preferably at least one tank (18) is provided for cleaning liquid.

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