Agitating – Mortar mixer type – With dynamic charging
Patent
1992-11-13
1993-11-16
Jenkins, Robert W.
Agitating
Mortar mixer type
With dynamic charging
366 39, 366 61, 414487, 414501, 414546, 414551, 37403, 37304, B28C 702
Patent
active
052617394
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a multifunction machine used on civil construction and public works sites.
The various earthmoving, handling and concreting operations required on sites of this kind usually require the use of a plurality of machines respectively adapted to enable execution of these various types of works.
An object of the present invention is to offer, in particular for use on isolated sites, a multifunction machine combining in a self-contained unit a set of means able conveniently to meet practically all routine requirements in respect of earthmoving, handling and concreting.
To this end it proposes a machine as defined in claim 1 thereby offering in particular the possibility of using the same loading shovel either to handle various materials to be transferred by way of the dumper to a transport vehicle or for loading the concrete mixer to prepare a required quantity of concrete.
The loading shovel may advantageously be incorporated according to claim 2 into a judiciously selected set of moving tools such as a digging shovel and a grader.
According to an important feature of the invention the concrete mixer is of the fixed container type in accordance with claim 3 the advantages of which include a large increase in production capacity for the same overall size.
The features and advantages of the invention will emerge from the following description given by way of example with reference to the appended drawings, in which:
FIG. 1 is a view in side elevation of a machine in accordance with the invention;
FIG. 2 is a diagrammatic view of the central part of the machine in the plane II--II in FIG. 1;
FIG. 3 is a front view in elevation in the direction of the arrows III--III in FIG. 1.
In the chosen embodiment shown the machine is constructed with a frame 10 having an anterior part 11 and a rear part 12 on respective sides of a central part 13. This frame is mounted on a pair of front wheels 14 and a pair of rear wheels 15, each of the four wheels being provided with a hydraulic motor, as indicated schematically at 16, for example, in FIG. 3. The rear wheels 15 can be steered by means of a steering mechanism (not shown) adapted to be controlled in the usual way by a steering wheel 17 installed for this purpose in a driver's cab schematically shown at 18 in FIG. 1.
In the central part of the machine is a concrete mixer 20 vertically above a water tank 21 with at its center a hydraulic fluid tank 22 immersed in the water in said tank 21.
By virtue of an arrangement that is not shown in the drawings because it is known in itself, the machine is provided with a hydraulic power plant driven by a single internal combustion engine and serving a set of control rams that will be referred to again later and the motors 16 etc coupled to the driving wheels, a motor associated with the concrete mixer and a water pump drive motor.
The concrete mixer 20 in the middle of the machine comprises a fixed tank with a semi-cylindrical lower part 23 above which is a prism-shape upper part 24 provided with a lid 25 in the shape of a chute with a bottom 26, two side walls 27, 28 and an inclined rear wall 29. This lid-chute is carried by two arms 30 articulated to a shaft 31 and adapted to be maneuvered by a pair of rams 32 between a concrete mixer closed position shown in full outline in FIG. 1 and a raised tipping position shown in chain-dotted outline at 25A in the same figure.
The fixed tank 20 of the concrete mixer is provided in its lower part with an internal stirrer 33 which comprises a shaft 34 adapted to be rotated by a hydraulic motor 35. Said shaft 34 carries through the intermediary of a series of tie-rods 37, 38, 39 two helical vanes 41, 42 each fitted with elastomer lips 43, 44 adapted to form scrapers in contact with the inside surface of the semi-cylindrical wall of the lower part 23 of the tank. The reversible motor 35 is adapted to urge the mass of concrete towards one or other of the two lateral walls 43 and 44, depending on the direction of rotation, the second wall 44 being provided with a hatch 4
REFERENCES:
patent: 2703227 (1955-03-01), Hughes
patent: 3463338 (1969-08-01), Schneider
patent: 4268175 (1981-05-01), Norlie
patent: 4698150 (1987-10-01), Wigoda
patent: 4825567 (1989-05-01), Andiano
da Costa Ferreira Dias Manuel J.
da Costa Goncalves Antonio
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