EP1504810A1 - Process for cleaning a mixing drum, and apparatus therefore - Google Patents

Abstract

A delivery truck (1) for ready-mix concrete has a mixer drum (2) with a filling inlet zone (3, 5) and an outlet zone (4, 6). The mixer drum is cleaned as required by a stationary cleaning (17) station (9) surrounded by screens (10-13). The drum is cleaned internally (7) and externally (9) by an array of cleaning jets (14, 15, 23, 28, 37).

Description

Technical area

For ready-mixed concrete vehicles, which have mixing drums, it is after some Operating time required, the mixing drum both inside and on the Outside to clean. When filling the concrete in the truck mixer drums it comes outside and inside in the inlet area, i. in the area of the hopper too Soiling or concrete caking. When emptying the truck mixer drum remain due to the viscous concrete mix remains of the concrete on the inside and Stick outside of the outlet area. Although the outlet chute after emptying the truck mixer drum cleaned manually, but remains of the concrete adhere.

State of the art

From DE 31 27 858 A1 is a water supply and cleaning system for a concrete mixer out. Concrete compulsory mixers usually comprise a mixing tank and inlets for aggregates, cement, water and one or more vents. Mixing water is applied under pressure between 4 and 6 bar via spray nozzles fed to the mixing container. The spray nozzles are arranged so that they cover the inside surfaces of the mixing container and the stirring tools clean and at the same time Form a water curtain. By means of the water curtain is an escape of dust and Cement prevented by inlet opening and vents.

From EP 0 608 191 A1 a stationary concrete compulsory mixer is known, the one High-pressure cleaning device is assigned. By means of the high-pressure cleaning device becomes more adherent to the stirring tools or to the container inner wall Hosed concrete with water jets. The high pressure cleaning device is at Press between 100 and 150 bar operated. The spray heads of the cleaning device are pivoted within the mixing container by an angle of more than 180 °. For this purpose, the spray heads are arranged on a rotatable within the mixing container Swivel arm added.

The concrete compulsory mixers known from DE 31 27 858 A1 and EP 0 698 101 A1 are known from usually included stationary in concrete processing plants. Within the Concrete compulsory mixer is the concrete according to the relevant regulations mixed in composition and the addition of additives and then discharged into the mixing drums of ready-mixed concrete vehicles, which in general under Pass the transfer hopper of the concrete mixer and fill it with ready-mixed concrete become.

From US 6,418,948 B1 is an apparatus and a method for removing concrete known from the insides of a mixing drum. The device comprises a lance-shaped Device whose front end for insertion into a mixing drum by their open end is suitable. The lance-shaped insertion tube is attached to a holding device added. At the mixing drum assigning end is a nozzle taken over which under high pressure fluid at least against the Inner sides of the drum can be sprayed, allowing concrete to stick to the inside the mixing drum has attached, can be removed.

Ready-mixed concrete vehicles in which mixed concrete is transported ready-mixed concrete, are positioned today for cleaning. For cleaning the spout and the Inlet area of the truck mixer drum, the operator is below the outlet chute and / or he climbs a vertically mounted ladder, which is located on the ready-mixed concrete vehicle located. Occasionally there is a cleaning platform available for this work to facilitate. The spraying and cleaning of ready-mix concrete mixers takes place via a hand-operated water lance, which is manually guided by operators to the Abrasive concrete residues and Schmutzanbackungen. During this time the operator stands in a water mist which with microparticles admixing with concrete Additives come, is loaded. The spraying of protective agents, which usually serve to over-bake at the outlet and inlet area in the To prevent mixer drum, also produces a spray that with Microparticles that the operator inhales.

Since only one water lance can be used, the cleaning procedure is correct time-consuming. In addition, there is no further work in the immediate vicinity can be performed, since the Abspritzbereich the rear portion of the truck mixer drum not limited by mudguards. These works are unpleasant and not user-friendly and represent an unsatisfactory condition.

Presentation of the invention

Starting from the outlined prior art and the disadvantages outlined above a method and a device for automatic cleaning of a truck mixer drum, in particular provided by their filling and its outlet area. By the method proposed according to the invention can be particularly the filling and the outlet area on the inside and on the outside of dirt or of Clean concrete residues. On the one hand, this makes a more appealing visual impression; On the other hand, by cleaning the truck mixer drum on the inside and on the Outside especially the filling and the discharge area an ergonomic Cleaning these areas of dirt or concrete remains can be achieved, so that the Cleaning these areas previously required periods can be significantly shortened.

The invention proposed cleaning method of the inside and outside of the Inlet or the outlet region of a truck mixer drum is preferably carried out in Cleaning chambers into which the ready-mixed concrete vehicle enters with its rear side. In the cleaning chamber can in the back wall, in the two lateral Boundary walls as well as inside the roof of the cleaning chamber spray heads be integrated. The spray heads are via a water supply or with a Water pressure connected via a high pressure water device, the pressure on the High-pressure device with respect to the roof side, rear wall side and side wall side arranged spray / spray heads can be variably controlled.

Furthermore, in a further embodiment, inside the cleaning chamber, in which drives the ready-mixed concrete vehicle with its rear side, a stationary one Frame structure may be provided to which rigid side arms are attached. The two Frame columns of the rigid frame construction can be connected to one another with a cross member be connected, in turn, turn in the direction of the truck mixer drum extending central arm can be added with spray / spray heads. The Transport concrete vehicle drives with the open end of its truck mixer drum in the Frame structure, wherein about the received on the frame construction arms provided spray / spray heads pressurized water both to the inside the inlet area and the outlet area as well as on the entire outside of the Rear area of the truck mixer drum can be addressed. Especially Stubborn dirt or residual concrete caking can be controlled via the High pressure, a targeted reinforcement of emerging from the spray / spray heads Water jets take place.

In a further embodiment, in the cleaning chamber, in which the Transport concrete vehicle with a rear side einfährt, a frame construction be included in the vertically movable articulated arms are. The articulated arms are on rails in horizontal and vertical direction movably received and become over in the framework construction integrated drives emotional. These can be designed as electric drives or pneumatic drives. The Articulated arms may have a first Gelenkarmabschnitt and a second Have Gelenkarmabschnitt. The second Gelenkarmabschnitt is through a hinge point connected to the first Gelenkarmabschnitt and carries a number of Spray / spray heads, which can be swiveled in both vertical and horizontal directions could be. At the controllable articulated arms, at which the pressure of the from the spray / spray heads emerging water jets can be set arbitrarily, is fed pressurized water. The cleaning chambers, which are the rear end of the Surrounded transport concrete vehicle encapsulate the environment from contamination, so e.g. against the mist produced during the purification of dissolved particles containing water; Advantageously, the floors of the cleaning chambers as feed plates over which the rinsed concrete or the dirt of a central residual concrete washing plant and / or a catch basin can be supplied. The In addition, cleaning chambers can be juxtaposed in individual sections be educated. For this purpose, at the cleaning chambers a number of Spray / spray heads are attached, the driving mixer drum of a Transport concrete vehicle completely transfers, so that with such a modified Cleaning chamber the entire outer area of a truck mixer drum a Clean ready-mixed concrete vehicle.

In a further embodiment, the cleaning device for Cleaning in particular the inside and the outside of the truck mixer drum Transport concrete vehicle to be assigned an automatable metering device. These automated metering device comprises at least one container and a pump. In The container is a means for pre- and post-treatment of the inside of the inlet or the outlet region of the truck mixer drum assigned. This agent prevents Premature caking of concrete on the insides of the inlet and outlet areas the truck mixer drum.

Advantageously, the automated cleaning method for cleaning in particular the inside and the outside of an inlet or outlet area of a Truck mixer drum coordinated via a controller. Within the controller, the Dimensions of the end of a truck mixer drum common transport concrete vehicle types get saved. In the control device, such as a PLC controller, can In addition, the travels of the articulated arms in the vertical direction, in horizontal Direction and the pivoting range of the articulated arms pivotable be stored trained spray / spray heads. In the control of the spray or Spray heads can also particularly stubborn soils having areas the inside or outside of the inlet or outlet area of the truck mixer drum get saved. About the controller, the water consumption and the Additive quantities are optimized. About the control can be the pressure of the local If necessary, the water supply network adapted or the at a intermediate high-pressure device available water pressure be managed.

drawing

With reference to the drawing, the invention will be described in more detail below.

Figur 1

mehrere nebeneinander angeordnete Reinigungskammern, wobei in einer der Reinigungskammern ein Transportbetonfahrzeug eingefahren ist,

Figur 2

eine weitere Ausführungsvariante einer erfindungsgemäß vorgeschlagenen Reinigungsvorrichtung für Fahrmischertrommeln mit einer starre Arme aufweisenden Rahmenkonstruktion,

Figur 3

eine weitere Ausführungsvariante einer erfindungsgemäß vorgeschlagenen Vorrichtung zur Reinigung der hinteren Bereiche von Fahrmischertrommeln mit an einer Rahmenkonstruktion angeordneten Gelenkarmen mit verschwenkbaren Sprüh-/Spritzköpfen und

Figur 4

eine Seitenansicht eines in einer Reinigungskammer eingefahrenen Transportfahrzeugs mit einer in die Reinigungskammer integrierten Rahmenkonstruktion mit verfahrbar ausgebildeten Gelenkarmen sowie einer der Reinigungskammer zugeordneten Restbetonauswaschanlage und einem Auffangbecken,

Figur 4a

ein in den Boden eingelassenes Auffangbecken, das beispielsweise durch ein Schöpfrad einer Restbetonauswaschanlage entleert wird und

Figur 4b

eine Restbetonauswaschanlage, deren Aufgabetisch vertieft in die Bodenfläche eingelassen ist.

It shows:

FIG. 1

several juxtaposed cleaning chambers, wherein in one of the cleaning chambers a transport concrete vehicle is retracted,

FIG. 2

a further embodiment of an inventively proposed cleaning device for driving mixer drums with a rigid arms having frame construction,

FIG. 3

a further embodiment of a device proposed according to the invention for cleaning the rear portions of truck mixer drums arranged on a frame structure with articulated arms with pivotable spray / spray heads and

FIG. 4

a side view of a retracted in a cleaning chamber transport vehicle with a built-in cleaning chamber frame construction with movable articulated arms and a cleaning chamber associated Restbetonauswaschanlage and a catch basin,

FIG. 4a

a catch basin embedded in the ground which is emptied, for example, by a scoop wheel of a waste concrete washing plant, and

FIG. 4b

a residual concrete washing plant, the feeding table recessed in the bottom surface.

From the illustration according to FIG. 1, a with a rear area in one Cleaning chamber retracted transport concrete vehicle, wherein in the Rear wall chamber, the two boundary walls and in the roof surface of the Cleaning chamber spray / spray heads are integrated.

On a ready-mixed concrete vehicle 1 a truck mixer drum 2 is added. The Drum mixer drum is made with fresh concrete, which is usually in one Concrete mixing mixer is turned on, filled. This is a filling area 3, the is formed as a hopper 5, placed in the truck mixer drum 2. Below the Einfüllbereich 3 is an outlet region 4, which has a discharge funnel 29 and a laterally pivotable as well as adjustable in its outlet height outlet chute. 6 having. Inner sides 7 of the inlet funnel 5, the outlet funnel 29 and the Outlet chute 6 come into contact with the concrete to be filled; this one stays on adhere to the inner sides 7. The outside 8 of the filling area 3 and the Outlet area 4 is heavily polluted on site, just think with cranes conveyed concrete vats, from which the leak-proof cap of the fresh concrete on the Drum mixer drum injected.

The inventively proposed cleaning method is within a Cleaning chamber 9 executed, which a first protective wall 10, a rear wall 11, a Chamber roof 12 and a second protective wall 13 has; furthermore at one Cleaning station with boundary walls, i. 1. Protective wall 10, rear wall 11 and 2. Protective wall 13. The distribution lines in the cleaning chamber 9 are to the local Water supply 53 connected; if the pressure is insufficient, the connection is made the local water supply 58 to a high pressure water device 54 and then to the Distribution lines in the cleaning chamber 9. The bottom of the cleaning chamber 9 is formed by inlet plates 18, via which the purged impurities in a Basin 19 discharged to a Restbetonauswaschanlage not shown in Figure 1 can be. The rinsed impurities from the single area 3 are about discharged the discharge chute 6. In the chamber roof 12, the first boundary wall 10 and the second boundary wall 13 of the cleaning chamber 9 are integrated Dachsprühköpfe 14 and integrated Seitenwandsprühköpfe 15 embedded. About emerging from this Water jets 16 are both the outside 8 of the filling area 3 and the Outlet region 4 and the inner sides 7 of the hopper 5, the outlet funnel 29th and the outlet chute 6 hosed down with pressurized water jet. The in the spray area 17 forming water mist caused by dissolved additives of additives added to the concrete may be contaminated, remains substantially in the interior of the cleaning chamber. 9 The roof spray heads 14 integrated in the chamber roof 12 are preferably arranged such that that the inner side 7, in particular of the filling area 3, i. of Einlauftrichters 5 can be cleaned. The registered spray leaves the Cleaning chamber 9.

The spraying / spraying heads 15 integrated in the side walls as well as the spraying / spraying heads the rear wall 11 and from the spray / spray heads in the roof surface 14th exiting water jets 16 can via a controllable control valve 59 in terms their pressure are regulated between freely preselected pressure levels. With that you can the water jets 16 emerging from the spray / spray heads 14 and 15 their pressure directed specifically to persistent caking of concrete.

From the illustration according to FIG. 2, a cleaning chamber 9 emerges into which the Transport concrete vehicle 1 with the rear end of the truck mixer drum 2 retracted is. In addition to the occupied by the ready-mixed concrete vehicle 1 cleaning chamber. 9 can be arranged side by side lying several cleaning chambers 9, the separated from each other by individual protective walls 10 and which all over individual inlet plates 18 with a Restbetonauswaschanlage not shown in Figure 2 43 are connected. The floors of the cleaning chambers 9 are all with Zulaufblechen 18 designed over which the rinsed waste water and the therein dissolved residual concrete also on the casserole 6 in a catch basin 19 and optionally in a residual concrete washing 43 can be passed.

In contrast to the embodiment variant of the cleaning chamber shown in FIG in the side surfaces 10, 13 and 12 integrated spray / spray heads, is in the Cleaning chamber 9 as shown in Figure 2 a stationary frame construction 20 recorded. The frame construction 20 comprises two frame columns 21, which are interconnected by a frame cross member 22, 27. At each of the Frame columns 21, a rigid articulated arm 24 and 25 is added. In addition, the Frame cross member 22 which rests on the upper end of the frame columns 21 on this a third rigid arm 26. The third rigid arm 26 is oriented so that the in this trained spray / spray heads 23, the inside 7 of the hopper. 5 reach and emerging from these spray / spray heads 23 water jets 16 of the inside of 7 caking and dirt can remove assets.

The side arms 24, 25 received on the rigid frame construction 20 are so far spaced apart that common types of ready-mixed concrete vehicles 1 with their back end partially into the cleaning chambers 9 as shown in FIG Figure 2 can retract without the side surfaces are damaged. At the first rigid side arm 24 and the second rigid side arm 25 are preferably several Spray / spray heads 23 are taken, whose water jets 16 the outside 8 both of the lead-in area 3, i. the inlet funnel 5 and the outlet area 4, i. the Outlet funnel 29 and the outlet chute 6 reach. Due to the encapsulation of the rigid Frame construction. 20 within the cleaning chamber 9 are more Cleaning chambers 9 protected against contamination by water mist; according to the Representation in Figure 2, the other cleaning chambers 9 also for cleaning of the rear area of truck mixer drums 2 of ready-mix concrete vehicles 1 be used. Each of the cleaning chambers 9 is provided with inlet plates 18 in the Ground surface provided. The splash water and the residual concrete leave the Cleaning chamber 9.

Instead of the two rigid side arms 24, 25 and 26 shown in Figure 2 can laterally superimposed several rigid side arms on the rigid frame construction 20 be included. In addition, it is possible on the cross member 22, 27 the rigid frame construction 20 also several the end of the truck drum 2 partially towering arms 26 record. The in the rigid side arms 24, 25 and in the central arm 26 recorded spray / spray heads 23 can be controlled via valves 59 are subjected to different water pressures, so that particularly strong Soiled areas on the inside 7 of the inlet area 3 and the inside of the Outlet chute 6 and the outlet funnel 29 stubbornly adhering concrete caking are removable. The in the rigid side arms 24, 25 and in the rigid central arm 26th arranged spray / spray heads are identified by reference numeral 28, the Cross members 22, 27 of the rigid frame structure 20 mounted spray heads are through Reference numeral 23 marked. The water supply of the spray heads 28 and 23, respectively takes place through the local water supply 53, 58 or via the high-pressure device 54, wherein the pressure via control valves 59 can be controlled. At the control valve 59, the Pressure of the emerging from the spray / spray heads 23, 28 water jet 16 is set be so persistent caking on the inner sides 7 and the outer sides of the 8th the filling area 3 and the outlet area 4 are treated with higher water pressures can be.

The illustration of Figure 3 is a further embodiment of a cleaning device for cleaning the inside and outside of the rear area of a Remove truck mixer drum of a ready-mixed concrete vehicle.

In the cleaning chamber 9 is a ready-mixed concrete vehicle 1 with the rear area retracted his truck mixer drum 2. The cleaning chamber 9 is replaced by a first lateral boundary wall 10, a second lateral boundary wall 13, a Rear wall 11 and the chamber roof 12 limited. The bottom surface of the cleaning chamber 9 is designed as Zulaufblech 18. There may be several through the second walls 10 separate cleaning chambers 9 may be provided, which among themselves through the chamber roof 12 and the side walls 10, 13 are encapsulated. About the Feed plates 18 leave cleaning water and residual concrete, the cleaning chambers. 9

In the embodiment variant of the invention proposed in FIG Cleaning device is within the cleaning chamber 9, in which the Transport concrete vehicle 1 is retracted with its rear portion, a frame 20th taken on which articulated arms 31 and 32 are movably received. At the Frame 20, at least one drive 30 is provided. On the first articulated arm 31 as well the second articulated arm 32 a plurality of spray / spray heads are added, which have a Water supply 53 or a high pressure device 54 are supplied with water. The High pressure device 54 may be disposed outside of the water purification chamber 9. Via the drives 30, the articulated arms 31, 32 in the vertical direction, i. moved perpendicular to the plane of FIG 3. The articulated arms 31, 32 have in each case a hinge point 33, on which a first Gelenkarmabschnitt 31 and a second Gelenkarmabschnitt 35 are pivotally coupled together. Likewise is by the Use of drives 30 a method of spraying / spraying in horizontal Direction via a cross member 22 feasible. As shown in Figure 3, are on the first Gelenkarmabschnitten 34 a plurality of spray / spray heads 23 was added, which on the outside 8 of the filling and the outlet region 3, 4 are directed. Depending on Buckling of the articulated arms 31, 32 can be at the Gelenkarmabschnitten 34 and 35 recorded spray / spray heads 23 to the contour of the inlet and outlet region 3, 4 hire the truck mixer drum 2, so that a particularly effective cleaning by dense leading the spray heads is guaranteed to the outside to be cleaned 8.

In addition, the at the ends of the first Gelenkarmabschnitte 34 received spray / spray heads 23 within a pivoting range 41 in be formed pivotable horizontal plane.

The frame 20 is associated with an external high-pressure water device 54, the can be arranged outside the cleaning chamber 9. At the high pressure device 54, which contains a pressure control, the water pressure can be calculated from the Spray / spray heads set 23 outgoing water jets 16, i. increase or decrease.

FIG. 4 shows the side view of a ready-mixed concrete vehicle whose rear part is retracted into a cleaning chamber.

The rear portion of the truck mixer drum 2 of the ready-mixed concrete vehicle 1 is of the Side walls 10, 13 of the rear wall 11 and the chamber roof 12 of the cleaning chamber 9 enclosed. The bottom of the cleaning chamber 9 is through inlet plates 18th formed to drain the rinse water. Within the cleaning chamber 9 is one of Frame columns 21 of the frame 20 shown, on which a running rail 36th is arranged. Along the running rail 36 of the frame column 49 is the second articulated arm 32 movable in vertical direction 42. The second articulated arm 32 includes the first Gelenkarmabschnitt 34 and the second Gelenkarmabschnitt 35, which at a joint 33rd connected to each other. At the the ready-mixed concrete vehicle 1 facing end the first Gelenkarmabschnitt 34 a pivotable spray / spray head 37 which is pivotable in the vertical direction. By means of the drives 30 shown in FIG the articulated arms 31, 32 are movable in the vertical direction, also takes place over the Drives a delivery of the Fahrmischertrommelende assigning spray / spray heads 23 and the buckling of the articulated arms 31, 32 at its hinge point 33 for optimum Positioning of the spray / spray heads according to the outer contour of the to be cleaned Einfüll- and the outlet region 3, 4. According to this embodiment may also be a Feed table 44 of the Restbetonauswaschanlage 43 upon pivoting of the articulated arms 31, 32nd be cleaned by 180 ° by high pressure jets 16.

As can be seen from the illustration according to FIG. 4, 12 of the chamber roof 12 Cleaning chamber 9 integrated spray / spray heads 14 was added, with which in particular, the inside 7 of the filling area 3 of the truck mixer drum 2 cleaned can be.

The water supply to the spray / spray heads 14, 23 via a high-pressure device 54, which is arranged outside the cleaning chamber 9. Of the Cleaning chambers 9 is associated with a metering device 50, the first container 51 and a second container 52 for receiving e.g. having a separation medium can. The metering device of the at least one or the one shown in Figure 4 two containers 51, 52 may have, is provided with a pump 53. The Metering device 50, a line to the spray / spray heads 14, 23 is provided. about this is on the concrete in contact surfaces of the inner sides 6 and the Outer sides 8 of the inlet funnel 5, the outlet funnel 29 and the inside of the Outlet chute 6 applied to premature tackling of the concrete and after the Emptying the truck mixer drum 2 remaining residual concrete residues to reduce.

The cleaning chamber 9 shown in Figure 4 can be used as an extension Holding device 40, which does not retract the cleaning chamber 9 Area of the truck mixer drum 2 covered. Over at the bottom of the fixture 40 attached spray line 45 and disposed thereon spray / spray heads 23, the entire outer peripheral surface can be cleaned by turning the truck drum 2.

The movable articulated arms 31, 32 shown in Figures 3 and 4 containing Frame cleaning device can be controlled via a controller 55. With the control device 55 can be both horizontal and vertical movements 42 of the articulated arms 31, 32 via the drives 30 (possibly also on the cross member 22), control, as well as the pressure level, which is generated via the high-pressure device 54, vary. In the high pressure device 54 or the control valves 59, the Water pressure levels, which are arranged at the respective in the cleaning chamber 9 Spray / spray devices 14, 23 abut, be freely selected. About the Control device comprising a read memory 56, the water pressure, the be adjusted to the spray / spray heads 14, 23 emerging water jets 16 and possibly be increased in particularly stubborn residual concrete caking, so this can be completely rinsed off. In the read memory 56 of the control device 55 The dimensions can be more common in terms of height and width Transport concrete vehicles stored with respect to the open end of the mixing drum 2 be. Depending on the height and the width of the inlet / outlet area 3, 4 of Fahrmischertrommel 2 are the travels 42 of the articulated arms 31, 32, the Verschwenkbewegungen 37, 41 of the spray / spray heads 23 and the buckling of the Articulated arms 31, 32 at the hinge point 33 for adaptation to the outer contour of the cleaning area, controlled. Via the control device 55 may further the amount the separation medium from the metering device 50 is optimized to the respective requirements adapted, controlled. FIG. 4a shows a variant embodiment in which FIG which the cleaning chamber 9 is assigned a Restbetonauswaschanlage 43, the one Shovel 46 has. By means of the scoop wheel 46 of the waste concrete washing plant 43 leaves advantageously arranged below zero level catch basin scoop, in which the splash or the washed-off residual concrete from the Cleaning station 9 can be transferred.

FIG. 4b shows a residual concrete washing installation 43 arranged below the floor level, in the feed table 44 by over the inlet plates 18 effluent spray or Residual concrete is fillable.

According to the embodiment variants shown in FIGS. 1 to 4b, this leaves Rinse water with the concrete residue and particles the cleaning chamber 9. The Spülwasserableitung from the cleaning chamber 9 is according to the local Realized realities. As shown in Figures 1 and 2, the Drain the rinse water via feed plates 18 or any existing Hoffall done, the rinse water in a shown in Figure 1 basin 19 via the inlet plates 18 and the outlet chute 6 can be supplied.

On the other hand, the Spülwasserableitung according to the variant shown in Figure 4 in a Restbetonauswaschanlage 43 done. The flushing water discharge takes place in one Feed table 44 and a busy below zero scoop 46. This scoops the rinse water in the Restbetonauswaschanlage 43 and an optionally existing pool 19th According to this embodiment, the rinse water through the inlet plates 18 and via the discharge chute 6 to the residual concrete washing plant 43 or its feed table 44 directed. When using a below zero level arranged scoop wheel 46, the inlet accounted for in the basin 19. According to the embodiment (see Figure 4b), the Residual concrete washing unit 43 are placed below zero level. Then the Spülwasserableitung on the outlet chute 6 and the inlet plates 18 without the use of a Receiving basin 19 are introduced directly into the Restbetonauswaschanlage 43, the no scoop wheel 46 (see Figure 4a) is needed.

According to the embodiment variant shown in FIG proposed cleaning device according to all variants a unit, a Scoop wheel 46, the scrubber 43 or a feed table or basin arrangement 19, 44 comprehensive, downstream, this unit the rinse water with residual concrete and Ingredients and particles directly via the outlet chute 6 and via the inlet plates 18 of the cleaning chamber 9 can be fed.

LIST OF REFERENCE NUMBERS

1

Mixed concrete vehicle

2

Mixing drum (truck mixer drum)

3

filling area

4

discharge area

5

feed hopper

6

outlet chute

7

inside

8th

outside

9

Cleaning chamber (cleaning place)

10

first boundary wall

11

rear wall

12

chamber roof

13

second boundary wall

14

integrated roof spray heads

15

integrated side wall spray heads

16

emerging jets of water

17

spraying

18

feed sheets

19

pool

20

frame construction

21

frame column

22

Frame cross member

23

Spray / spray head

24

first rigid side arm

25

second rigid side arm

26

central arm

27

Frame cross member

28

Spray / spray heads in the side arm

29

discharge hopper

30

drive

31

first articulated arm

32

second articulated arm

33

articulation point

34

first Gelenkarmabschnitt

35

second Gelenkarmabschnitt

36

runner

37

swiveling spray / spray head

40

holder

41

Swivel range spray / spray head

42

Travel direction of articulated arms

43

Restbetonauswaschanlage

44

entry table

45

Spray / spray line

46

Schöpfrad

50

metering

51

first container

52

second container

53

pump

54

High pressure unit (adjustable)

55

control device

56

read-only memory

57

random access memory

58

water supply

59

adjustable valve

Claims (14)

Method for cleaning the mixing drum (2) of a ready-mixed concrete vehicle (1), wherein the mixing drum (2) comprises a filling area (3) and a discharge area (4) for ready-mixed concrete, with the following method steps: the retraction of the ready-mixed concrete vehicle (1) in a boundary surfaces (10, 11, 12, 13) of a cleaning area (17) having cleaning station (9), the cleaning of inner sides (7) and outer sides (8) of the filling area (3, 5) and the outlet area (4, 6) of the truck mixer drum (2) with spray / spray heads (14, 15, 23, 28, 37) emerging Pressurized water jets (16). A method according to claim 1, characterized in that the pressure level and from the spray / spray heads (14, 15; 23, 28, 37) emerging pressurized water jets (16) to a pressure control unit (54) is adjustable. A method according to claim 1, characterized in that from the pressurized water jets (16) rinsed concrete remains a provided below inflow plates (18) basin (19) or a Restbetonauswaschanlage (43) or directly above the outlet region (4, 6) of the truck mixer drum Well (44) of the waste concrete washing system (43) are supplied. A method according to claim 1, characterized in that on the spray / spray heads (14, 15; 23, 28, 37) via a metering device (50) can be applied, caking of concrete inhibiting release agent is applied. Device for carrying out the method according to one or more of claims 1 to 4, characterized in that the spray / spray heads (14, 15) in boundary surfaces (10, 13) laterally of the filling region (3, 5) and the outlet region (4, 6) of the truck mixer drum (2) are integrated and in a the cleaning station (9) limiting roof surface (12) for cleaning the inside (7) of the filling area (3, 5) of the truck mixer drum (2) are integrated. Apparatus for carrying out the method according to one or more of claims 1 to 4, characterized in that the spray / spray heads (23, 28) on rigid arms (24, 25, 26) of a frame (20) are received, which the cleaning area (17) confined and the frame (20) within the cleaning station (9) is arranged. Apparatus according to claim 6, characterized in that the frame (20) has a central arm (26) which is received on a frame cross member (22, 27) and above the filling area (3, 5) of the driven into the cleaning station (9) driving mixer drum (2) runs. Apparatus for carrying out the method according to claims 1 to 4, characterized in that the spray / spray heads (23, 28) on articulated arms (31, 32), which via drives (30) on a frame (20) in horizontal and / or or vertical direction (42) are movable, and on a frame cross member (22, 27) are added. Apparatus according to claim 8, characterized in that the articulated arms (31, 32) each have a hinge point (33) to which a first Gelenkarmabschnitt (34) and a second Gelenkarmabschnitt (35) are connected to each other, to be cleaned on the outside ( 8) of the filling area (3, 5) and the outlet area (4, 5) of the truck mixer drum (2) are adjustable. Apparatus according to claim 8, characterized in that on the articulated arms (31, 32) received spray / spray heads (23, 28) in a horizontal plane (41) are pivotable and in a direction perpendicular to this plane (37) are pivotable , Device according to claims 5, 6 or 8, characterized in that at one of the cleaning station (9) a the entire length of the truck mixer drum (2) overlapping holding device (40) is included, which comprises a spray / spray line (45), and has spray / spray heads (23) on the side facing the truck mixer drum (2). Device according to claims 5, 6 or 8, characterized in that the cleaning station (9) comprises a metering device (50) of caking of concrete inhibiting separating medium for application to the inside (7) of the filling area (3, 5) and the outlet area (4 , 6) is assigned. Apparatus according to claim 10, characterized in that the articulated arms (31, 32) about the frame (20) are pivotable and for cleaning the feed table (44) to the Restbetonauswaschanlage (43) are adjustable. Apparatus according to claim 5, characterized in that the pressure level of the spray / spray devices (14, 15, 23) via control valves (59) is adjustable, which are associated with a high-pressure device (54) or a connection of a local water supply (58).

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