DE2833311A1 - MACHINE FOR THE MANUFACTURE OF A ROAD PADDING - Google Patents

Description

PATENTANWÄLTE DIPL.-ING. WERNER FREISCHEM

ILSE FRESH

5000 COLOGNE 1 HEUMARKT 50 TELEPHONE: (0221) 23 58

Applicant: Integrated Technology Limited

Our reference: I 76 PaGm 78/1

Description: Machine for the production of a road surface

The invention relates to a machine for producing a road surface according to the preamble of claim 1.

With such a machine layers of different materials can be applied, e.g. lower base layers, base layers, sub-base layers or top layers, as well as Ceiling substructure, material foundations, surface layers or anti-skid ceilings on streets, lanes, slopes, sidewalks, Parking lots, playgrounds and sports fields, pool floors, industrial ceilings or the like.

The known machines of this type and for the applications listed have a front chassis that is positioned on the uneven, drives along the surface to be covered and behind which - seen in the working direction - a screed is arranged. When a covering or a layer is applied, the unevenness of the surface to be covered is fully transferred the screed, this must be constantly readjusted in order to be able to compensate for all the unevenness through it alone.

Furthermore, the screed of the known machines cannot be extended sideways with respect to the rest of the machine, so that the screed cannot evade any obstacles and lateral deviations from the

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line of movement of the machine are not possible. In addition, the known machines of this type have no compaction device, so that a separate device must be used for compaction.

It is the object of the invention, while avoiding the disadvantages of the known machines, to provide a machine of the type mentioned at the beginning To create a way that enables a more precise and faster application of a material layer.

According to the invention, this object is achieved by a machine according to the features of claim 1.

As the rear chassis rolls on the finished surface, irregularities in the road to be covered are only partially passed on to the screed. A similar Reduction of the road influence is achieved through the two-axis swivel bearing of the front chassis bumps in the road to be covered are only partially passed on to the structure.

The term chassis refers to chassis with wheels, understood with one or more rollers, with caterpillars or chassis with skids, etc.

Embodiments of a machine according to the invention are explained below with reference to the drawing.

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In this show:

Fig. 1 is a side view - partially indicated by dashed lines, covered internal parts - of a machine whose front chassis has wheels,

FIG. 2 is a view corresponding to FIG. 1 of a machine, the front chassis of which is equipped with crawlers,

Fig. 3 is a plan view of the machine according to Fig. 1, partially executed as a cut,

Fig. 4 is a front view of the machine corresponding to Fig. 1, partially executed as a sectional view,

FIG. 5 is a rear view of the machine according to FIG. 1, partly in section and with the rear straight Chassis,

Fig. 6 shows the sectional view along the section line A-A in

ι
Fig. 3 with a screed that is straight,

7 shows a rear view similar to FIG. 5, but with the rear chassis in the form of a roller at an angle,

8 shows a section carried out transversely to the longitudinal direction of the machine with the screed engaged,

9 is a side view of a machine with a fluted applicator roller between the screed and the Bunker funnel, some concealed parts are shown in dashed lines,

Fig. 10 is a rear view of a machine with a rear Chassis with rollers and skids, Fig. 11 is a diagram of a profiling device on the rear

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present chassis,

12 is a diagram of a scale division with a viaduct,

13 shows a diagram for the alignment of the profiling device -for the application of a layer, the surface of which is inclined in relation to a horizontal bed,

14 shows a diagram for the alignment of the profiling device for applying a layer the surface of which is inclined with respect to an inclined bed,

15 shows a diagram for the alignment of the profiling device for the application of a layer, the surface of which has a crown opposite a horizontal bed,

16 shows a diagram for the alignment of the profiling device for the application of a layer, the surface of which is inclined towards a horizontal bed and at the same time for the application of a horizontal final layer a horizontal sidewalk, and

17 is a diagram for explaining the principle of operation the machine according to the invention.

The machines shown in Figures 1 to 4 have a Underframe with a chassis that has a cross member 1 with a tubular profile, its webs vertical and its flanges run horizontally, and which - in the exemplary embodiments according to FIGS. 1, 3 and 4 - rolls on two wheel units. Each wheel unit is suspended from an upright vertical bracket 2, on which one can pivot about a transverse axis 3

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Wheel carrier 4 engages, each of two vertical, to each other parallel plates that connect the four wheels on each side and wheel unit. As from Fig. 4 As can be seen, the wheel units are arranged at a short distance from the ends of the cross member 1. In the plates of the wheel carrier 4 coaxial bores 6 are provided. Each wheel unit can be pivoted about its transverse axis 3, so that - when the front wheels 5 are lifted from the ground, with the holes 6 in a position behind the vertical bracket come - a pin can be inserted through the holes 6 and thereby hold the wheel unit in one position in which the front wheels are raised. Each vertical holder 2 is composed of two coaxial pipe pieces Circular cross-section together, one of which protrudes into the other. This allows the wheels of a wheel unit by one vertical axis can be rotated.

To steer the machine - if necessary - each wheel unit has a forward-facing drawbar arm, the two drawbar arms merge into a common pull rod. the central drawbar (Fig. 1) can be operated hydraulically, for example.

Fig. 2 shows another embodiment of the front chassis

j with two track units. Each of these units can also be rotated around a transverse axis. The caterpillar

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units are connected to one another and have a vertical support 2 arranged upright, which allows them to pivot around a common vertical axis. In the illustrated embodiment (Fig. 2) the lower area of the vertical holder 2 a laterally cantilevered arm which is connected to a hydraulic cylinder, thereby the Track units steerable.

The machine has a structure that is supported at the rear by a rear chassis, which will be described below, and is carried by the underframe at the front over the front chassis. To connect to the underframe is on Structure a suspension device 7 is provided, which is formed by two angle pieces, which are parallel to each other and arranged transversely to the front of the structure in the front area are. The suspension bars of these elbows run in the vertical direction, the mounting flanges horizontally and away from each other. The webs of the cross member 1 protrude into the space between the suspension bars of the suspension device 7, the cross member 1 and the suspension device '7 are pivotably connected via a longitudinal axis 8, which runs through aligned holes in the webs. With this arrangement, the structure can be arranged around a lengthwise direction of the machine Axis can be pivoted relative to the base. Vertically arranged guides 9 are on the suspension device 7 provided and lead the free ends of the transverse

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-12-carrier 1 during its pivoting movements about the longitudinal axis 8.

The machine can either be pulled or self-propelled be. In Fig. 1, a suitable pulling device is shown, this has two side parts with which the wheels one Towing vehicle are associated. Each side part has a drawbar 10, which, starting from the sides the machine runs through a guide bush 11 and on engages a hydraulic cylinder 12 on the inside via a swivel joint. Furthermore, each side part has the pulling device a contact arm 13 with a tire contact sleeve 14 which can rotate about the axis of the contact arm 13, and with a Rim roller 15, which moves along the rim and thereby rotates about an axis running at right angles to the contact arm 13.

The tire contact sleeve 14 and the rim roller 15 can be moved along the contact arm 13 and in a desired position Position can be set. An additional role, not shown in the figures, corresponding to role 15 can also are provided, it is also displaceable and fixable along the contact arm 13. It is used to drive backwards.

In practical use, the two side parts of the pulling device are first pushed away from each other, so that a towing vehicle (not shown) can reverse to the front of the machine, then the

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Hydraulic cylinder 12 actuated to pull the two side parts towards each other. The role 15 of each part comes in Plant on the rim of a rear wheel of the towing vehicle, while the tire contact sleeve 14 rests on the tire of the rear wheel. The machine can then be removed from the towing vehicle to be pulled away »

The structure also has a bunker 20, which is filled with material can be filled, which is applied when driving the machine. The bunker 20 has a floor 21 and two side walls 22 and a front wall 23. Its rear wall is formed by a partition. The bottom 21 has a front, essentially horizontal area and a sloping area. The front wall, the side walls and the rear wall can be extended and retracted by means of suitable, known devices. So the front wall 23 is by means of pivotable, Hand lever 24 arranged on the side walls 22 is adjustable. The front wall 23 can thus on the horizontal area of the Rest 21 or assume the inclined position shown in FIG. The bunker 20 has an outlet device serving funnel, which is closed by a closing plate 25 in the illustration. The latter is over a hydraulic cylinder 26 is actuated, which is arranged below the sloping part of the floor 21. The striker can assume any position between closed and open position.

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At the rear of the bunker 20 is a screw conveyor with two coaxial conveyor units 30 arranged. Each unit 30 has a shaft 31, which is reversible by a direction hydraulic motor 32 provided at the inside end of the shaft 31 is driven. The shaft 31 rotates an Archimedean screw 33 facing the shaft 31 is axially displaceable. This screw 33 rotates in a bearing 34 which is attached to a side wall 22 of the bunker is. The width of the conveyor is thus essentially the same as the width of the bunker 20.

In addition, an additional conveyor 35 can be provided, the shaft of which is detachably connected to and to the shaft 31 rotates. Such an additional conveyor 35 is shown in FIGS. Each additional conveyor 35 is via a longitudinal joint 36 connected to the machine, so that it - if necessary, can be lifted from the position shown without from having to be disconnected from the machine. The material stored in the bunker 2 0 reaches the conveyor and is through it evenly distributed over the entire width of the machine and each connected extension unit. Every additional sponsor 35 has at the rear a height-adjustable level plate to the thickness of the applied by the additional conveyor to control wedged material.

If no additional conveyor 35 is connected, this will be

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Bring material conveyed sideways under the side walls 22 and is by a side arm of the screed expanded, more detailed information on this later.

The machine also has a measuring device which is shown in Form of a height-adjustable screed 40 is formed (Fig. 1, 6 and 8). The screed 40 shown has one L-shaped cross-section with a substantially upstanding leg 41 and one substantially at right angles to this running, horizontal leg 42. The transverse The edge on the front part of the horizontal leg 42 is the leading edge of the screed 40, and the lower one rear edge of the upstanding leg 41, which runs parallel to the leading edge, forms the rear edge of the screed 40. The front area of the screed 40 is held by front hydraulic cylinders 43, while the rear Area is attached to the rear hydraulic cylinders 44.

The front and rear hydraulic cylinders 43, 44 are independent adjustable from one another, although in normal use only the front cylinders 43 are actuated separately from the others whereas the rear hydraulic cylinders 44, once adjusted to the desired height, be held in this position. The cylinders 43,44 are connected via a frame 49, this can be a Hydraulic cylinder 50 are moved transversely with respect to the

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rest of the machine, namely in a front guide 45 by means of rollers 46 (Fig. 6) and in an end guide 4 7 by means of rollers 48. With regard to this arrangement, the screed 40 can also be moved transversely, thereby creating obstacles can evade and lateral adjustments are possible.

In the area of the free ends of the screed piles 40 there are connecting links 51 (FIG. 1) is provided, which can be pivoted about longitudinal pivot axes with the upstanding leg 41 and an upright extension are connected above the leading edge. To these links 51 are over Vibration damper 52 the lower ends of the hydraulic cylinders 43,44 hinged. The horizontal leg 42 of the screed 40 carries vibrators 53.

The screed 40 is hollow and has an extension part at each end 54 (Fig. 6), which can be pulled out to the side and can be fixed in this position. At the bottom of the Base plates 55 are attached to the extension part. Height adjustable side plates 57 can be attached to the outer ends of the Extension part 54 are attached to limit the width, until the material is transported by the screw conveyor.

Perforated heating pipes run through the screed 40 and heat them up when, for example, bitumen is laid out.

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The inlet ends 56 of these tubes are shown in FIG.

The side walls 22 extend to a rear Partition wall 60 (Fig. 3), this is used to hold Pull-out guides 61, which are connected to the side walls 22 and facilitate their retraction and extension. The pull-out guides can be mounted on the partition wall via rollers (not shown) be held. Similar pull-out guides 61 for guidance of the side walls 22 are arranged at other points of the side walls 22. All of these pull-out guides can be used in one any position can be determined.

In the vicinity of its end regions is on the partition wall 60 (Fig. 1) an outer tube 62 is attached, in which an inner tube 63 is guided and displaceable. Each inner tube 63 is with one Hydraulic cylinder 64 connected, which defines the height of the rear Aüfbauteils. These hydraulic cylinders 64 can be independent operated from each other. At the lower end of each inner tube 63 is a longitudinal pivot connection 65 outer saddle 66 articulated. The outer saddles 66 (Fig. 1 and 5) are connected to one another via four parallel beams 67, inner saddles 68 are suspended from the latter. In the saddles 66, 68 rollers 69 are provided, the two rear Hold and guide support rollers 70 freely rotatable. At the outer ends of these support rollers 70 can (not shown) Attachment rollers are attached.

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A water tank 71 is attached to the partition 60 so that water can be sprayed onto the support rollers 70 and thus avoided be that laid material sticks to the rollers.

Guides for the rear end of a towing vehicle can be provided in the upper part of the machine.

A primary drive, such as an internal combustion engine or an electric motor fed by a battery, drives a hydraulic pump (not shown) which, via control units 79, which applies hydraulic fluid to the various hydraulic cylinders and hydraulic motors. on the other hand can be provided instead of a hydraulic system or as a supplement to this, a compressed air system that the various Actuating cylinders or motors supplied. Instead of some of the hydraulic cylinders, mechanical adjustment devices, for example working with screws and threaded nuts.

5 and 7, the upper rear bracket 67 and the upper front bracket 67 are pivotable about a common swivel joint 72, while the lower rear support 67 each via a swivel joint 73 are connected to a turnbuckle 74. In the same way, the lower front brackets 67 are connected to one another. This arrangement - together with the longitudinal swivel connection

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65 - enables the saddle 66, 68 and thus the rollers 70 to be set at an angle to one another, as shown in F.ig. 7 shown. This apex adjustment can also be reversed or only take place on one side.

As can be seen from FIGS. 6 and 8, the peeling roller sits down 40 from two halves together, which have swivel joints and a turnbuckle 78 in the rear area (Fig. 8) and in the front Area (not shown), as well as a base plate 77 are connected. This arrangement - together with the pivot joints at the lower end of the connecting links 51 enables it is to bring the screed 40 into an apex position, as shown in FIG. The other way round Are apex or inclination in only one direction. also possible. A cover plate 78 prevents material can get into the gap between the two angled halves.

FIG. 9 shows the machine according to FIG. 1 in an embodiment for applying thin layers of material. To that end is a Roller 80 is held in suitable bearings (not shown) and is driven by the hydraulic motor or several such motors driven. The surface of this roller 80 can, for example, be axial or screw-like Circumferential notches or be provided with a network in order to create a large number of relatively small recesses or cavities.

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fen that are filled with the material when the roll 80 rotates when this material is applied. In this exemplary embodiment, the closing plate 25 or a similar one is used Plate and another plate held by the screed 40 as a stripping plate for the roller 80. The roller 80 can also be applied to dispense liquid material for an anti-slip covering. Generally takes over the role 80 in its use the function of the measuring device, although in some applications in combination with the screed 40 is used, which serves as an additional measuring device.

Fig. 10 shows two different designs of the rear Chassis. Instead of rear support rollers 70 either runners 81 slide over the laid surface, or curb rollers 82 roll on the curb or on the curb formwork. In this figure the screed is 4 shown in raised position.

The machine also has a profiling device,
in order to hold the screed 40 and the rear chassis, for example the rollers 70, at the desired height above and at the desired angle of inclination to the base on which the material is to be applied.

The profiling device shown has two separate ones

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Units, each of which are located on or near the sides of the machine. Is a unit or both are units for example a spirit level 86 or a scanning unit 87. A total of two such units, in any one Combination, can be on a suitable part of the screed 40 or a suitable point of the rear Be attached to the chassis of the machine, also an attachment of a unit to the screed 40 and the other on Chassis is possible. Examples are shown in Figs.

The scanner 86 of Fig. 11 has an upright Arm with a large number of openings to be able to attach it to the machine at the desired height, as well as a cross arm that rests on a curb with little force, the curb gives the reference line. A reference line can also be given by other means, e.g. by a laser beam. For example, the change in the contact pressure of the scanning device 86 on the curb or their deviation from the curb or from the laser beam can be used for the automatic control.

The leveling device with bridge level 85 according to FIG. 12 has a tubular body 87 of rectangular cross-section, at each end a disk 88 is provided. Each disc 88 has a radially extending threaded hole that has an adjusting screw 89

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takes, in turn by one of two vertical brackets 90 is passed. With this, the tubular body 87 can be removed completely or, for example, at a desired angle to be established. Behind the tubular body 87 is a series of parallel lines 91, which serve as a scale for the angle setting of the tubular body 87 and thus the spirit level 85 are used. Other scales can also be used. Like in As is common in road construction, the angles are given as gradients, i.e., increase per horizontal distance by the inclination of the To be able to determine the street.

In addition, such leveling devices 85, 86 can also be attached to the extension conveyor 35.

For the setting according to FIGS. 13 and 14, the spirit level 85 is set to the desired gradient and the scanning device to the desired height above the road surface.

As can be seen from Fig. 5 to 8, the entire machine, and of this in particular the screed 40 and the rear Platen 70, substantially symmetrical about a vertical plane running longitudinally through the center of the Machine is running. Accordingly, for a setting according to FIG. 15, the leveling unit with spirit level 85 is adjusted so that that only one half of the screed 4 0 or one

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Roller 70, with which the setting is coupled, to the desired one Crown angle is adjusted, whereas the scanning device is adjusted to the desired height.

16 shows a spirit level 85 on an extension piece of the screed 40 or a roller 70 in order to adjust the angle of the screed 40 or the roller 70
of the extension conveyor 35 to reach. A setting for
a road made in the manner as for Fig. 13
and 14 takes place and an automatic and at the same time correct
Aligning for the sidewalk.

17 shows a front chassis that rolls on a road that is to be covered with a layer of material, as well as a rear chassis that rolls on the applied layer, for example the surface from the front edge
the screed 40 was measured from the trailing edge
this screed 40 is precompacted and compacted by the roller 70. Due to the fact that the roller 70 rolls on the finished surface, which is flat, bumps in the road on which the front chassis rolls are only partially passed on to the screed 40, like this
is indicated by dashed lines.

In addition, a similar reduction in the forwarding of linshenhp.ii-.ßn cJe * r SfraRp p rrsinhl · diirrh the swivel verb In-

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extension between the underframe and the structure by means of the longitudinal axis 8, which can be seen in FIG.

At least in theory, by arranging a swivel connection 8 in the middle between the lateral wheel units, only half of the vertical deviations of one of the wheel units compared to the other, caused by unevenness in the road on the longitudinal axis 8 and thus the front part of the structure is passed on, and of this 50% only about half, i.e. 25% of the total dimension, is on the front edge of the Screed 40 forwarded, which is located approximately in the middle between the front and rear chassis. The closer the front edge of the screed 4 0 is to the rear rollers 70, the lower the inaccuracies, which are passed on to the screed 40.

The front hydraulic cylinders 43 and the rear hydraulic cylinders 44 of the screed are used to adjust the machine. 40 and the hydraulic cylinders 64 of the rollers 70 are each equipped with a scale division for independent adjustment. These scales are mutually coordinated. Such a vote can be, for example, that, if the leading edge, trailing edge and roller 70 are on a common horizontal plane, all dial pointers show the point zero on their associated scale.

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In practice, the screed 40 is adjusted so that its leading edge is higher than its trailing edge, while the roller 70 is in turn held lower than the trailing edge. With this setting, the front edge measures, the rear edge is used for pre-compaction and the roller 70 compacts.

While adjusting the trailing edge and roller 70 normally remain constant when the machine moves forward, the front edge is constantly readjusted for its two halves separately; this is done manually or automatically to compensate for the bumps in the road that are on the front Acting undercarriage that rolls on this uneven road and the bumps partially on the screed passes on to compensate.

The roller 70 can be vibrated or filled with water be. The screed or leveling screed 40 can have transverse profiling, and the roller can also be correspondingly be trained. The bunker 20 can be divided into part bunkers and can be under pressure in order to be able to dispense the material. In place of the spirit level 85, another leveling or plumbing device can be used, e.g. one in a pipe Enclosed ball or a U-leg pipe scale with floats and sensors that allow a deviation from the desired one Record setting, e.g. microswitch or Light barriers with photocells, and via known control

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directions trigger the corresponding compensations, e.g. setting the front edge in the correct position.

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Claims (1)

PATENTANWÄLTE DIPL.-ING. WERNER FREISCHEM Dipj _.- rNG. ILSE FRESH 5000 COLOGNE 1 HEUMARKT 50 TELEPHONE: (0221) 23 58 PATENT CLAIMS: [1 · jMachine for "making a road surface that runs along W '■ j the road to be occupied is movable and one structure with j one, the material to be laid out receiving bunker and with a hopper discharging the material at this bunker, a front chassis, and a measuring device for forming a layer of material dispensed through the hopper, characterized in that it equipped with a rear chassis (66 to 70) that supports the body together with the front chassis (1 to 6) is that the, the applied layer in the desired thickness and shape forming the measuring device (screed 40) is arranged between the front chassis (1 to 6) and the rear chassis (66 to 70) and that Pivot axes (transverse axis 3, longitudinal axis 8) are provided, which have a freely developing angular position between the front Chassis (1 to 6) and the measuring device (screed 40), as well as the rear chassis (66 to 70) allow namely by one in the machine longitudinal direction and parallel to vertical plane of symmetry of the machine extending longitudinal axis (8) and a perpendicular to this plane of symmetry arranged Transverse axis (3). 909807/0885 ORIGINAL INSPECTED 2. Machine according to claim 1, characterized in that the rear chassis (66 to 70) via adjustment devices (62 to 64) is arranged adjustable in height relative to the structure. 3. Machine according to claim 1 or 2, characterized in that the rear chassis (66 to 70) via adjustment devices (62 to 64 and 72 to 74) relative to the structure is arranged adjustable in inclination. 4. Machine according to claim 2 or 3, characterized in that the rear chassis (66 to 70) at least one has transversely arranged roller (70) which rolls on the surface of the layer laid out by the machine. 5. Machine according to claim 4, characterized in that it has two rollers (70) which are independently adjustable are. 6. Machine according to one of claims 1 to 3, characterized in that that the rear chassis (66 to 70) has at least one curb roller (82) or at least one Has runner (81). 7. Machine according to one of claims 1 to 6, characterized in that that the measuring device is designed as a screed (40) 909807/0885 is formed and via adjustment devices (43, 44, 75 to 78) is arranged to be height-adjustable and tiltable transversely and longitudinally. 8. Machine according to claim 7, characterized in that the screed (40) consists of at least two parts, whose Floor height and angle can be adjusted independently of one another via adjustment devices (43, 44, 75 to 78). 9. Machine according to one of claims 1 to 8, characterized in that that the measuring device (screed 40) is arranged laterally with respect to the structure so that it can be disengaged. 10. Machine according to one of claims 1 to 9, characterized in that that a transversely arranged, the material from the bunker (20) receiving roller (80) is provided which has a plurality of indentations which receive the material and that the roller (80) has a stripping and closing plate (25) is assigned for laying out a material layer. 11 * machine according to one of claims 1 to 10, characterized in that that they have a screw conveyor that accepts the material from the bunker (20) and distributes it laterally (30 to 34), which is arranged transversely to the longitudinal axis (8). . '' 909807/0885 12. Machine according to one of claims 1 to 11, characterized in that that the bunker (20) has removable and retractable walls (21 to 23). 13. Machine according to one of claims 1 to 12, characterized in that that the hopper has a closing plate (25) with a hydraulic cylinder that controls the amount of material to be dispensed (26) is assigned. 14. Machine according to one of claims 1 to 13, characterized in that that the front chassis (1 to 6) has two laterally offset wheel units (wheel carrier 4, Wheel 5), which can be controlled via a steering device with a tiller arm that can be actuated via a hydraulic cylinder. 15. Machine according to one of claims 1 to 15, characterized in that that it has a profiling device with a scanning device (86) measuring the height and a leveling device (spirit level 85) for determining the bank slope of measuring device (screed 40) or roller (70). 16. Machine for the production of a road surface, which can be moved along the road to be covered and which has a front one Has chassis, a bunker and an adjustable measuring device, characterized in that the measuring device 909807/0883 2933311 -5- ■ direction (screed 40) a height measuring device (scanning device 86) and an inclination measuring device (spirit level 85) are assigned. 17. Machine according to one of claims 15 to 16, characterized in that the height measuring device (scanning device 86) and the inclination measuring device (spirit level 85) sensors j are assigned, which indicate a deviation of the set factory forward to automatic control units and readjustment of the measuring device (screed 40) or the roller (70) effect. 909807/0886