DE8004779U1 - TRANSPORT VEHICLE FOR BUILDING MATERIAL BLENDS - Google Patents

Description

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description

The present invention relates to a transport mixer for building material mixtures, in particular concrete, which essentially consists of a mixing drum rotatably mounted on a vehicle chassis and for introducing the building material mixture in A construction site has a guiding device under the mixer drum outlet, which rotates around two intersecting axes is pivotably arranged on the vehicle chassis.

Such a transport mixer is known for example from DE-OS 24 47 197 and realizes the idea of building material mixtures such as transporting concrete from the mixing plant to the construction site with the same device and spreading it there. In the known transport mixer, the guiding device conveying the building material mixture to the place of use is by means of a conveyor belt realized. This is mounted on the transport mixer and from there conveys the concrete directly to the place of use.

From DE-OS 25 31 550 it is already known to provide a collecting funnel with a housing below the mixing drum outlet, from which, in cooperation with a slide and a piston, the concrete flows into a hose line and via this to the place of use is pressed.

This solution based on the pump principle requires with regard to the slide and piston control a not inconsiderable effort. In addition, the piston drive itself requires a strong one Motor and considerable energy requirements.

The known conveyor belt version has the disadvantage that the range fixed by the length of the tape and the adjustability with respect to the horizontal only within relatively narrow limits is feasible.

From DE-PS 346 866 is already the aggregation of a mixing drum known with a conveyor screw pipe that creates the concrete from the drum to the point of use. This configuration was Designed solely with a view to vertical concrete delivery, which is why the screw conveyor line is also firmly braced using struts is. In addition, with this arrangement, the concrete mixture is first emptied into a basin, from where it is then in the manner of a riser is promoted upwards.

Based on the known mobile concrete conveyor systems The invention is based on the object of specifying a transport mixer of the type mentioned at the outset, in which the disadvantages mentioned are eliminated by using simple components that are already known per se for pumping concrete.

This object vi rd achieved in that the guide device is realized by a per se known auger.

This screw conveyor preferably consists of one with the vehicle chassis connected first screw and a plurality corresponding to the distance between the transport mixer and the point of use attachable extension screws.

Further features and advantageous embodiments of the invention result from the further subclaims. Details of the invention are explained in more detail with reference to the drawings.

Fig. 1 shows the rear part of a transport -

mixer including screw conveyor;

Fig. 2 shows a detail with respect to the screw conveyor enlarging from the illustration of FIG. 1.

According to FIG. 1, a mixing drum 3 is rotatably mounted about its longitudinal axis 4 on a vehicle chassis 1 with wheels 2. Of the The drive for this rotary movement is not shown for reasons of clarity and is in any known manner Way trained. The mixing drum 3 generally has a pear-shaped shape and is - with an inclined position of its axis of rotation 4 from back to front - open at the rear upper end. The mixing drum 3 is charged via a filling opening A mixing drum outlet 6 is provided for emptying the mixing drum 3 by inversion of the direction of rotation. Under This mixing drum outlet 6 is the guide device for the building material mixture on holding means connected to the vehicle chassis 1 movably supported.

According to the invention, this guide device consists of a screw conveyor 7. The details with regard to this screw conveyor 7 are explained below with reference to FIG.

Via a filling funnel 9 which is arranged below the mixing drum outlet 6 and opens into the housing 8 of the screw conveyor the building material mixture flows into the screw conveyor. This funnel 9 can - as indicated in the drawing - with regard to its The upper edge can be extended upwards by means of a flexible sleeve 10 in order to provide additional protection against concrete splashes grant.

By corresponding - symbolically indicated by an independent motor 11 - drive, i.e. sufficient drive energy for the screw conveyor and the correct direction of rotation of the screw spirals is via the filling funnel 9 in aas Housing 8 of the screw conveyor 7 conveying the incoming building material mixture in the direction of the motor 11 or the hopper 9 away.

The screw conveyor 7 is composed of a plurality of partial screws according to the invention in such a way that one first screw is connected to the vehicle chassis 1 and practically forms the receiving and transport station for the building material mixture and that further extension screws 13 adapted in the distance to be overcome between the transport mixer and the place of use Number of pieces are coupled to the first screw and to each other. In the illustration of FIG. 2 there is such an extension screw shown fragmentarily. The connection or coupling point between the first and extension worm is designed so that the worm shafts 15 automatically couple when hanging. During transport, these extension screws 13 can generally be attached to a fender of the vehicle chassis.

The screw conveyor is now used for handling at the construction site or site 7, including any extension worms 13, connected to the vehicle chassis 1 in a vertically and laterally adjustable manner. For this purpose, a holding arm 16, which is preferably pivotably connected to the vehicle chassis and which extends over at its free end, is provided a pivot pin 17 or a first flange piece 18 supports the screw conveyor 7 in an articulated manner. About one on a second Flange piece 19 of the worm housing 8 articulated adjusting lever 20, which is firmly connected with its second end to the pivot pin 17, the second support point for the screw conveyor 7 is formed.

The adjusting lever 20 can be mechanical, hydraulic or pneumatic, namely - as shown - manually via a

Be designed crank or automatically actuated. |

At the construction site, on the one hand, the inclined position of the screw conveyor 7 can now be adjusted via the adjusting lever 20 - namely upwards or down - to be adjusted. On the other hand, the screw conveyor can be adjusted by hand directly at the point of use Axis of the pivot pin 17 - are moved back and forth.

After all, it can be said that the transport mixer according to the invention achieves the underlying task in an outstanding manner Way is resolved. In particular, it should be emphasized that - based on the known conveyor belt and pump configuration - as a result the forced guidance of the concrete mix through the auger gives considerably better results in terms of the height difference that can be overcome are attainable. Finally it should be pointed out that in principle instead of the extension screws normal pipes or a telescopic pipe can also be coupled without thereby affecting the basic idea of the invention is left.

10 430
February 21, 1980

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10 4 3

Reference number

1 vehicle chassis

2 wheels

3 mixing drum

4 axis of rotation

5 filling opening

6 Mixing drum outlet

7 screw conveyor

8 worm housing

9 filling funnel

10 cuff

11 drive motor

12 tubular bodies

13 Extension Auger

14 Connection / coupling point

15 worm shaft

16 support arm

17 pivot pins

18 first flange piece

19 second flange piece

20 adjustment levers

Claims (1)

•%%% B. ·· ft · * ft 10 4 3 0 a 8 claims 1. Transport mixer for building material mixtures, in particular concrete, which essentially consists of a rotatable on one There is a mixing drum mounted on the vehicle chassis and for introducing the building material mixture into the locations of use Construction site has a guide device under the mixer drum outlet around two intersecting axes is arranged pivotably on the vehicle chassis, characterized in that that the guide device by a known screw conveyor (7) is realized. 2. Transport mixer according to claim 1, characterized in that that the screw conveyor (7) from one with the vehicle chassis (1) connected first screw and one the distance between the transport mixer and the place of use corresponding plurality of attachable extension screws (13) consists. 3. Transport mixer according to claim 1, characterized in that that the screw conveyor (7) consists of a first screw connected to the vehicle chassis (1) and one of the Distance between the transport mixer and the point of use corresponding to the number of attachable extension tubes consists. 4. Transport mixer according to claim 3, characterized in that the extension tubes by a single one telescopic tube are realized. 5. Transport mixer according to claim 2, 3 or 4, characterized in that that the first screw is spatially assigned to the mixer drum outlet (6) and has a funnel (9) having. 6. Transport mixer according to claim 5, characterized in that the upper edge of the filling funnel (9) means a flexible sleeve (10) is extended towards the mixer drum outlet (6). 7. Transport mixer according to claim 5 or 6, characterized in that that the first worm via a Irehbolzen (17) embedded in a holding arm (16) horizontally and via a with the pivot pin (17) connected first flange piece (18) on the one hand and one with the pivot pin (17) and the adjusting lever (20) connected to the first screw is arranged on the other hand so as to be vertically pivotable. 8. Transport mixer according to claim 7, characterized in that the holding arm (16) is pivotable with the vehicle chassis (1) is connected. February 21, 1980