FI79582B - FOERFARANDE SAMT MASKIN FOER FRAMSTAELLNING, UTBREDNING OCH PACKNING AV EN AV BLANDNING AV BINDEMEDEL OCH STENMATERIAL BESTAOENDE MASSA. - Google Patents

Description

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Method and machine for the production, application and compaction of a mass of a mixture of a binder and a aggregate - Förfarande samt maskin för framställning, utbredning och packning av en av en blandning av bindemedel och stenmaterial bestaende massa

The invention relates to a method for applying and compacting a mass of a mixture of binder and aggregate, in particular for the manufacture of roads, in which casting is carried out continuously from a moving vehicle, in which aggregate is continuously fed to a silo, the mass flow of aggregate is monitored and the mass is compacted by the sealing members in the application vehicle.

The invention also relates to a machine for carrying out the method as further defined in the preamble of the appended claim 2.

Such a method is known from DE patent publication 14 69 202. It has a mixing chamber with a helical mixing and feeding screw, the vertical rear wall of which has a narrow discharge opening for the mixed mass. The machine is not well suited for making wide roadbeds or surfaces, as the mass discharged from the mixing chamber must be applied separately, and the capacity of the machine is quite limited, as it is not possible to run a thick layer on the entire width of the machine.

This disadvantage does not occur in the machine known from FI patent publication 57 157, but it has a landing silo separate from the mixing chamber, into which the mixing chamber is periodically emptied. This results in an expensive and complex machine.

U.S. Pat. No. 2,201,493 discloses a road surfacing compound application machine which runs along pre-set rails on the ground surface which determine the level of the surface to be cast. Use of the device requires a smooth and finished casting base and large-scale installation of rails. The aggregate and binder are each fed separately at predetermined constant feed rates, which 2,79582 requires a constant run rate to control the thickness of the layer to be cast. The mixing members are reciprocating gratings in the landing silo, which are moved between the r-shaped bases of the landing silo. The mass in the landing silo cannot rest tightly on the ground, but the material to be mixed collapses from the slits of the fixed grate bases and the gratings movable back and forth between them, with the result that the thickness of the cast layer is determined by the instantaneous feed rate.

U.S. Pat. No. 3,678,817 discloses a road surfacing compound application machine in which premixed pulp is continuously dispensed onto a substrate to be coated, in which a spreading screw applies the pulp to the width of the machine. Lastly, the machine has a leveling and pre-sealing bar. The machine is only suitable for spreading pre-mixed pulp. The layer thickness adjustment based on the mass feed rate includes an adjustment delay and does not take into account the compaction factor of the mass, so the mass can only be lowered on a flat surface. However, it is not possible to ensure the evenness of the finished surface. The final sealing of the surface must be performed with a separate · "device.

Compared to the previous ones, a more advanced spreading and compaction machine is disclosed in FI patent publication 65295, with which the cast mass can be compacted and finished on a relatively uneven base. Director. The disadvantage of this known machine is that a premixed casting mass must be fed into the machine, since the machine does not have means for dosing and mixing the ingredients of the mass.

The object of the invention is to provide a method and a machine with which the above-mentioned drawbacks and drawbacks can be avoided so as to enable efficient mixing, application, and compaction of the mass at high capacity so as to obtain a finished, uniform casting surface.

To achieve this object, the method according to the invention is characterized in that the aggregate and the binder are continuously mixed with 3,79582 rotary agitators in an open landing silo while the land in the landing silo rests freely on the ground and the mixed mass is spread over the open bottom of the silo. the thickness is determined by adjusting the vertical distance between the compactor used for sealing and the machine frame.

The characteristics of the machine appear from the appended claim 2.

The simple structure is achieved due to the fact that the silo acts as a mixing space at the same time. In this connection, a high capacity is achieved with a light and simple machine structure, when the mixing of the pulp can be carried out in a partially underground support in an open landing silo.

With the method and machine according to the invention it is possible to manufacture, apply and compact e.g. earth and dry concrete, for example in road construction, for which no suitable machines have previously been available.

In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawing, in which

Figure 1 shows a machine for the production, application and compaction of dry concrete according to the invention.

Figure 2 shows a further development of a drawing device for finishing the surface in a machine according to the invention.

The machine for the production, spreading and compaction of, for example, dry concrete shown in Fig. 1 comprises a frame marked with reference number 1, the front end of which is supported by track wheels 2 and the rear part by a roller drum 3 and a vibrating roller 16. The roller wheels 2, 5, 23.

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By means of said piston-cylinder devices 4, 5, 23 the height and position of the body 1 relative to the ground can be adjusted and / or the body can be kept at the desired level by controlling the operation of the piston-cylinder devices 4, 5, 23 with a spirit level device 24 and a height scale 25.

At the front end of the machine there is a silo 6 for rock to be unloaded from the truck driving ahead. At the rear of the silo 6 there is a landing silo 8, the lower end of which has a transverse landing opening 9. The bottom of the aggregate silo 6 is formed by a belt conveyor 10 which feeds the aggregate 7 into the landing silo 8.

At the top of the machine, above the landing silo 8, there is a binder tank 11, which is filled with a binder fed from a tank car running on the side of the machine through a pipe 26. The lower part of the binder container 11 has a dosing screw 27 and a closing flap 28, which adjust the amount of binder 12 to be fed to the downcomer 8.

In order to carry out the casting continuously in a so-called strip casting from a moving vehicle, an up-down-adjustable dam hatch 19 is provided for adjusting the mass flow of aggregate fed to the downcomer 8, whereby the mass flow can be controlled both by the damper 19 and by changing the speed of the belt conveyor 10. The amount of aggregate 7 entering the landing silo 8 is monitored by means of a mechanical device 29 for measuring the thickness of the aggregate layer on the belt conveyor 10, which device is connected to an electronic measuring device 30. In addition, weighing sensors 32 are provided at the end of the belt conveyor 10 for measuring the amount of aggregate.

In the production of concrete meeting very high strength requirements, a laser measuring device 31 is used instead of a mechanical measuring device 29.

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The mass flow measuring means 29, 31, 32 of the aggregate 7 control the operation of the binder 12 dispensing screw 27 and the shut-off flap 28 so that the binder 12 fed to the downcomer 8 is in the desired ratio to the aggregate 7 to be fed.

The continuously fed aggregate 7 and the binder 12 enter the mixer 18 in the downcomer 8, whereby the aggregate 7 and the binder 12 mix in the downcomer 8 while the mixed dry concrete mass 14 is applied through the open bottom 9 of the silo 8. Between the lowering opening 9 and the mixer 18 there is a transverse feed screw 13 rotatable about the horizontal axis of the machine, which equalizes the required amount of mass 14 in the lowering silo.

The layer thickness of the casting mass 14 coming from the downcomer 9 of the landing silo 8 is determined by an adjustable spreading blade 15 moving with the body 1. Behind the spreading blade 15 there is a vibrating roller 16 compacting the casting mass and then a static roller, roller drum 3.

The machine according to the invention has two drive motors operating independently of each other (not shown), one of which is arranged to drive devices operating synchronously with the speed of movement of the machine and the other devices which are substantially independent of the speed of movement. The former motor provides power, for example, for the movements of the machine, for the movement of the door 19 and for the movements of the conveyor belt 10 and the dosing screw 27. The latter motor, in turn, handles the height adjustment of the body 1, the compaction by means of a vibratory roller 16, the operation of the drawbar 17 and the operation of the mixer 18.

In a preferred embodiment of the invention, a roll drum 20 is arranged between the roll drum 3 and the drag device 17 in communication with the tempering liquid tank 19. The rubber-coated roll drum 20 is moistened with a hardening liquid 21 by means of a filter 33. 34.

The tempering fluid reservoir 19, the roller drum 20 for dispensing the tempering fluid, and the drag device 17 are formed as a single unit to be raised and lowered relative to the machine body 1.

The traction device 17 has two or more traction planks 22 which perform a synchronous movement in synchronism with each other, whereby the compression pressure of the traction planks 22 against the casting surface can be adjusted by means of hydraulic piston-cylinder devices 35.

The invention has been described above with reference to only one preferred embodiment thereof. However, this is in no way intended to limit the invention to this example only, but many modifications are possible within the scope of the inventive idea defined by the following claims.

Claims (10)

1. Spreading and sealing process for a mass of residue au a mixture of a binder and a rock material especially for the preparation of the proprietors, in the uneven process casting takes place continuously from a moving vehicle, in the uneven stone material (7) is measured continuously to a drop silo ( 8), control of the mass flow of the rock material (7) to be measured and, depending on it, measure the binder (12) continuously to the same dropout silo (8), without sealing of the scattered mass (14) taking place in the spreading vehicle seal means, (3, 16, 17), characterized in that the rock material (7) and the binder (12) are continuously mixed with rotary mixer means (13r 18. in an open bottom drop silo (8) at the same time as the mass in the drop silo (8) freely spreads on the ground surface and; spreading on the mixed mass (14) takes place via the open bottom of the ejector silencer (8) unduly over the entire width of the silo, that the thickness of the precipitated layer is determined by regulating the vertical take the ignition off between the unused shaking furnace (16) and the machine body (1 ) * 2 * Machine for making ,. spreading and sealing on a mass In enduring on a mixture of binder and stone material, the machine comprises a frame (1), the front end of the uar is supported au * wheels or au with laru chains fitted with laru wheels (2) and uars ·· rear part is supported on at least one wheel drum (3), uaruid the supporting wheels (2) and the wheel drum (3) are supported against the stem * but (1) by: hydraulic colucylinder devices (4, 5), with the aid of the height and position of the body. the relationship to the ground can be regulated and / or the body poured into a desired pane by: controlling the function of the colucylinder devices (4, 5) with position extension means, to the machine also includes a silo (6) located in the front end of the machine for stone material and rear outlet silo (6) existing drop silo (8), at the lower end of the machine there is a drop opening (9) in the direction of the machine, uaruid a belt material silo (6) bottom forming belt conveyor (10) feeds the rock material (.7) to the drop silo (8). ), to the machine " 79582 1 further hears the layer thickness of the pouring mass (14) of the pouring mass (14) from the ejection opening (9) controlling the movable red body of the adjustable spreading blade (15), an existing spreading bed, the casting material and the shaking roll (16); last means (3, 17) for final treatment of the cast surface, characterized in that the machine additionally belongs in combination: - means for controlling the noise flow and the voice material to be fed continuously to the rued open bottom equipped jet (8), - means for feeding a binder (12) in the dependent mass of the material (7) continuously to the same precipitation silo (8), - rotatable mixer means (13, 18) for mixing the binder material (7) and the binder (12) ) continuously in the open-bottom drop-out jet (8), at the same time as the mixed mass rests freely on the ground surface, and - means for regulating the vertical clearance between the shaft roller (16) and the body, (1). : 3: baskin according to claim 2, characterized therein; that the rotary mixer means (13, 18) hear an ear assembly:. mixer means. (18) also. a lower after-mixer (13). 4. A basin according to claim 2 or 3, characterized in that a rear adjustable dust cover (19) is arranged on the rear part of the frame (10) to regulate the thickness of the stone material layer (7) located on the belt. 5. Machine according to claims 2-4, characterized in that the machine has two independent and mutually operating drive motors, one of which is arranged to operate synchronously with the machine's speed of movement, and the other of the machine's speed of movement is essentially independent.