JPS6254922B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention comprises a drive engine, on the chassis of which a storage tank for new material for construction is arranged in the forward area, seen in the forward direction of the machine, and provided for said storage tank. The new material is removed from the ground by the first conveyor device. By conveyor device,
The scraped material is supplied directly or indirectly from a mixing device provided at the rear of the storage tank, at least one heating device for heating the scraped road surface, and a mixing device, The present invention relates to a paving machine for scraped road surfaces having a new material and a means for applying paving material made of scraped material.

When repairing a road surface that has been damaged by the effects of weather or high vehicle density, it is common to first scrape or strip the surface to be repaired using a cutter or stripper, and then use other types of machinery to scrape or strip the surface. Pave a new road surface. In this case, generally the material that has been removed from the original road surface can be put to new use as long as it is thoroughly mixed with new material, i.e. this material is fed into the paver's reservoir and then mixed. The new pavement material will be applied to the worn-out road surface as new pavement.

Intensive heating of the worn road surface is required before new pavement is applied to bond the new and old pavement together and ensure that the new pavement can withstand the heavy loads of heavy traffic. It is. It is for this reason that prior art machines used for paving abraded roads are equipped with heating devices that extend over their length. Nevertheless, when a fairly deep scraping is required to renew the pavement, the heating device installed on the machine heats the road surface to the desired temperature, especially when the material beneath the road surface is to be scraped away. It may happen that the road surface is covered so densely and strongly that it is not sufficient for this purpose. In such cases, an auxiliary heating device placed on the chassis is forced onto the worn road surface in front of the paver, which naturally increases the cost per unit length of road.

Another possible means of achieving the temperatures required for paving a stripped road surface is to carry out the stripping and paving operations immediately one after the other, so that the heat generated during stripping of the road surface can be transferred to the subsequent paving. It is to be used for. However, taking into account the different speeds per road unit length for scraping and paving operations, it is not possible to utilize both machines optimally, and therefore this method also Incurs high repair costs.

After all, a possibility would be to enlarge the paver as much as the heating surface is required. But this is
Because the machinery is large and has to be transported from one work site to another, whether by semi-trailer or by hand, special operating permits are required, which must be applied to the respective government offices. No. This has extremely detrimental consequences for the maneuverability and adaptability of the machine.

It is therefore an object of the present invention to provide a machine of the above-mentioned type for paving worn-out road surfaces, even when paving road surfaces that have been worn down to a considerable depth, without the use of an auxiliary transportable heating device. The object is to improve, as far as possible and with the aid of this machine, a certain mixture of old and new road surfaces, which is capable of withstanding the very high loads of heavy traffic.

Starting from a machine of the type described above, this problem is solved by the invention as follows. In other words, the collection device for collecting scraped road surface material from the ground is placed in front of the storage tank when viewed in the direction of movement of the machine, and the second conveyor device provided for the collection device is located immediately behind the storage tank. This is solved by passing through the vicinity and being guided backwards, maintaining the height and spacing of the scraped road surface.

Such measures make it possible to increase the area on the chassis given to the heating device without substantially increasing the overall area of the machine and thus without increasing the length of the machine. In other words, the measures according to the invention increase the area on the machine available for the heating device, while the maneuverability and maneuverability are not compromised in any way. In this regard, the following points should be kept in mind. That is, by arranging the collection device directly in front of, respectively, to the side or below the storage tank and the conveyor device associated with this collection device, the position of the storage tank remains unchanged. This means that, as before, it can be fed from the truck without any difficulties and does not obstruct the truck driver's view. A particular advantage of this solution according to the invention is that it can also be applied to those already in operation, in which case only minor modifications are necessary.

In a preferred embodiment of the invention, a conveyor device attached to the collection device is guided rearwardly to the side of the storage tank. In such embodiments, the reservoir mounted on the palm extends fairly deep, close to the ground;
It is therefore particularly advantageous if there is only a small space between the bottom of the storage tank and the level of the ground road.

Particularly in the embodiments described above, it is advisable to equip a collecting device for collecting the scraped material and conveying it laterally, and to design the conveying device as a screw conveyor with a screw rotating in a tube. A system consisting of such a conveyor device and such a collection device can be arranged on a paving machine in a particularly compact and space-saving manner.

It has turned out to be appropriate to design the collection device for laterally conveying the scraped material as at least one screw conveyor with screws rotating in one direction over the entire length. Instead of such a screw conveyor, it is likewise possible to use a collection device having only guide plates or push plates. However, such a collecting device has the disadvantage, compared to the above-mentioned collecting devices, that the scraped material is not crushed as strongly as in the case of a screw conveyor during transportation.

In order to remove as much fine-grained scraped material as possible from the scraped ground and to further increase the efficiency of the subsequent heating device, a It is expedient to provide obliquely rotating roller steel brushes so that the fine-grained scraped material is conveyed from the brushes to the end of the collection device at the side of the conveyor device.

According to yet another advantageous embodiment of the invention:
A conveyor device attached to the collection device is guided rearward under the bottom of the storage tank. Such an example has the advantage that it can be made at lower cost compared to the previous example and therefore, as is generally always the case, the gap between the storage tank and the worn road surface is This method is used whenever there is sufficient space left and the conveyor system can also be arranged in addition to the heating device provided below the conveyor system. A further advantage of this embodiment compared to the previous example is that this example does not have an impact on the width of the vehicle as might occur in the previous example.

In such an embodiment of the invention, it has proven suitable to provide a collection device for collecting the scraped material and conveying it to a central location, and to design this conveyor device as a belt conveyor. . The use of collectors and belt conveyors that convey this material centrally allows particularly low-height constructions, which cannot be achieved with e.g. screw conveyors and laterally conveying collectors. I had to go there.

Advantageously, the collection device for laterally conveying the scraped material comprises at least one screw conveyor, each approximately half the length of the screw conveyor and having screws in opposite directions.
It is obvious that two separate screw conveyors arranged coaxially or with mutually parallel central axes can be used as well. However, such measures are expensive and should therefore only be applied in special cases, for example when it is desired to increase the crushing effect of the screw.

Similarly, in this embodiment, two roller steel brushes are installed on the screw conveyor, looking in the forward direction of the machine, to enable fine-grained scraped material to be removed from the scraped road surface. These roller steel brushes, best placed at the rear, are rotated at an angle relative to each other, and the scraped fine-grained material is transferred by these brushes to the collection device. transported to the center of the

The collection device may be fixed directly to the chassis of the paver or, which is preferred for structural reasons, directly to the reservoir.

It is desirable that the collection device be adjustable in height in order to ensure complete and comprehensive removal of abrasive material from the road at any abrasion depth. This can be done by fixing the collection device to the storage tank via the corresponding unloading equipment, or by fixing the collection device securely to the storage tank and fixing the storage tank to the chassis so that the height can be adjusted. This is achieved by doing.

Typically, during simple moving operations in which the paver is moved from one destination to another, the cistern is pivotably supported in a height-adjustable manner relative to the chassis in order to raise the cistern above road level. Taking into account that the mobility of the paver can be improved by holding the collector, the second solution, which securely fixes the collector in the storage tank, is advantageous in that it does not require additional unloading equipment for the collector. It is.

In the case of a scraped road surface, the scraped material is often dispersed in larger pieces on the road surface, so only cutting is performed on the outer periphery of the screw of the screw conveyor according to a further preferred embodiment of the present invention. It is particularly effective to provide this.

The screw conveyor extends to fit the entire width of the scraped road surface, and using the method described in the example, all the material can be picked up.
If necessary, pulverization can be accomplished in one operation by cutting alone.

The screw conveyor may be equipped with any type of cutting only. However, it is particularly suitable to use a cylindrical chisel inserted into a radially provided hole in the screw conveyor and held by a retaining ring.

Viewed in the direction of machine movement, it is particularly suitable to provide a shielding plate or a cover plate supported on the scraped road surface behind the screw conveyor. This increases the conveying efficiency of the screw on the one hand and also substantially increases the crushing effect.

It has proven suitable to provide the reservoir with a side outlet, ie an outlet provided on one of the side walls of the reservoir. In this way, the space between the storage tank and the scraped road surface is not reduced unnecessarily by the conveyor device attached to the storage tank.

In order to control the mixing ratio of the scraped material and the new material supplied from the storage tank, the opening cross-sectional area of the outlet of the storage tank can be suitably continuously adjusted by means of a sliding plate. Additionally or alternatively, the outlet of the storage tank can likewise be connected via a first conveyor device to the inlet of a blending device provided on the chassis. In such solutions, the adjustment of the blending proportions is carried out by the blending device, while a sliding plate that continuously adjusts the outlet controls the supply of fresh material from the reservoir to the blending device. Such a solution is useful when the conveyor device provided between the outlet and the compounding device is driven at constant speed. That is, in this case the supply of fresh paving material to the compounding device is not regulated by changing the speed of the conveyor device. If a compounding device is present, it may be advantageous to provide a third conveyor device extending from the compounding device to the mixing device. This mixing device is usually located in the rear part of the chassis, with the second conveyor device terminating at the end of the chassis and at the side of the compounding device.

According to a particularly advantageous embodiment of the invention, the reservoir has a dispensable outlet facing the second conveyor arrangement, the first conveyor arrangement being replaced by the second conveyor arrangement. In this example, the conveyance of the scraped material by the collection device and the conveyance of the material fed from the storage tank to the mixing device is carried out by one conveyor device, while the new paving material and the scraped material are transported by a single conveyor device. The mixing rate is controlled by an adjustable outlet for blending.

The adhesion of the new paving material to the scraped ground is determined, according to a further development of the invention, by the fact that, viewed in the forward direction of the machine, the scraped ground material is deposited before the device applying the paving material fed from the mixing device. A further improvement can be achieved by providing a device for gripping the road surface. Roughening or breaking up the worn road surface by a small, predetermined depth increases the overall contact area of the old and new pavement materials, thus promoting adhesion of the new pavement to the old pavement. .

According to an advantageous embodiment of the invention, the traction device includes a freely rotating spiked roller.
The spike roller has a cylindrical mandrel on which are mounted a number of thin and relatively short rods. In order to be able to adjust the gripping depth, the gripping device is adjustable in height. Since small pavement particles can collect irregularly on the scraped road surface after this traction operation, a traction device with a screw distributor located behind the spike rollers when viewed in the direction of movement of the machine is recommended. It is recommended to provide a device, by means of which the disintegrated pavement particles are evenly distributed over the abraded road surface.

The invention will now be explained in more detail by means of the drawings, which include a partially diagrammatic representation and an example.

The machine that pavers the worn-out road surface with new paving material has a pair of steerable front wheels 2 and a pair of rear wheels 3.
The vehicle is driven by a diesel engine 4 provided in the chassis 1. A machine driver's seat 5 is provided behind the diesel engine 4.

A pair of swing arms 6 are rotatably supported at the front of the chassis 1, while two hydraulic cylinders 7
is provided for turning the turning arm 6. Looking away from the chassis 1, a pivot arm 6 has a storage tank 8 for newly applied paving material 9 at its end. The paving material 9 passes through a side outlet (not shown) onto the first conveyor device 10 (only the bearings 11 of the lower support rollers are shown). The first conveyor device 10 is designed as a belt conveyor and terminates above the inlet of the compounding device 12, and the second conveyor has a continuously adjustable outlet extending from the storage tank 8 to just short of the rear wheels 3. A mixing device 14 is provided above the device 13 and at the rear wheel 3 location. The second conveyor device 13 is likewise designed as a belt conveyor, which conveyor belt runs on a number of support rollers supported on bearings 15 in the chassis 1 and the pivot arm 6. If you shift your line of sight from the mixing device 14, the end of the second conveyor device 13 is
It is provided for the collection device 16 and is firmly fixed to the storage tank 8.

The collector 16 includes a screw conveyor 17 that conveys the scraped material from where it is picked up by the collector 16 to the center of the screw conveyor. The scraped material is then conveyed rearward by a second conveyor device 13, where new material is added by a compounding device 12 and at that location to achieve the desired mixing ratio. The scraped off material is collected together with the new material by the compounding device 12, and then reaches the mixing device 14,
There it is intimately mixed. The intimately mixed material is then discharged from the mixing device 14 onto the abraded road surface and is evenly distributed by the screw distributor 18 over the abraded road surface. The paving material is pressed onto the ground by a stamper 19 and then pre-compacted by a ruler. The final compaction of the material is carried out by road rollers running behind the paver. The material discharged from the mixing device can be injected with chemicals by means of a conventional finisher attached to the paver.

In order to obtain a constant mixture of eroded ground that equally withstands the heavy loads of heavy traffic, heating devices 21, 22 and 23 are provided over the entire length of the device, including two liquefied gas containers 24. ，
Liquefied gas supplied from 25 is used. The evaporator necessary for the operation of the heating devices 21, 22 and 23 is likewise provided on the chassis 1 (not shown).

Both heating devices 21 and 22 are rigidly fixed on the pivot arm 6. On the other hand, heating device 23
is attached to the chassis 1 by four hydraulic cylinders 26 so that its height can be adjusted.

Furthermore, between the heating device 23 and the mixing device there is provided a pulling device 27 consisting of a spike roller (not shown) rotating in a housing 28 and a screw distributor arranged after it. This traction device 27 can be raised and lowered by means of height-adjustable support wheels 30.

It should also be noted that the second conveyor device 13 can be divided into two conveyor devices.
In other words, one is the collection device 1 that collects scraped and peeled off material.
The other one picks up the scraped material discharged from the first conveyor device at that location, and transfers the material discharged from the compounding device and this conveyor device to the mixing device 1.
4.

As can be seen in FIG. 2, the structure with the reservoir and collection device fixed on the pivoting arm 6 includes a reservoir 8' with a bottom 31 inclined to the side wall and a lower part of this reservoir 8' in front. It may also be configured with a collecting device that collects the scraped off material in the central part. In the embodiment shown in FIG. 2, the fresh paving material in the storage tank 8' is conveyed to the compounding device 12 by a screw conveyor 32 located on the side of the storage tank.

The collecting device 16 includes a screw conveyor having opposite screws 34, 35 each extending half the length of the screw conveyor 33. The screw conveyor 33 is supported in two side walls 36, 37 welded to the storage tank 8'. A screw conveyor 33 is installed on the outside of the side wall 36.
A drive motor 38 is provided.

Furthermore, a guide pulley 39 of the conveyor belt 40 of the conveyor device 13 is supported in the two side walls 36, 37. The conveyor belt 40 passes rearwardly under the storage tank 8' and passes through two of the pivoting arms 6.
upwards between the two swivel arms to reach the height of the chassis.

At the front edge, the two side walls 36, 37 merge with guide steel plates 41, 42, respectively.

In the case of this collection device, the scraped material is guided by two screws 34, 35 to the center of the screw conveyor, and from there transported by a second conveyor device 13 provided in the center. be left.

In the embodiment of FIGS. 3 and 4, the storage tank 8'' is provided with an outlet at its bottom, through which the new paving material 9 is delivered to the first conveyor device 10.
This first conveyor device is designed as a belt conveyor and transfers the material to the compounding device 1.
Transport to 2.

Below the storage tank 8'' there is a collection device 16' which, as in the previous example, comprises a screw conveyor 43 with a screw 44 rotating in one direction over its entire length.
Similarly, it is rotatably supported between 6' and 37'. In the direction of machine movement indicated by arrow A, there is a guide steel plate 45 behind the screw conveyor 43;
This guide plate supports the conveyance of the scraped material by the screw conveyor 43 in the direction of the second conveyor arrangement 46 .

A roller steel brush 47 is provided at the rear of the guide steel plate 45, that is, at the rear of the screw conveyor 44.
It is rotatably supported between two side walls 36', 37'. Roller steel brush 47 and screw conveyor 44 are drivingly connected to drive motor 49 by gear 48 . Roller steel brushes 47 are provided to collect small particles of scraped material that cannot be collected by screw conveyor 44. in the end,
Behind the roller steel brush 47, a guide steel plate 50 is further provided for guiding the material collected by the roller steel brush to the conveyor device 46. The conveyor device 46 has an opening 5 in the side wall 36'.
1 and is designed as a screw conveyor. And this second conveyor device 4
6 conveys the scraped material onto a conveyor device mounted on the chassis 1 of this machine, from where it joins material from a storage tank 8'' and is conveyed to a mixing device 14.

In the embodiment shown in FIG. 5, it is designed as a belt conveyor to transport the new paving material from the storage tank 8 and the collected scraped material to the collecting device 1.
6″, one second for feeding to the mixing device 14
A conveyor device 52 is provided.

Similarly, the reservoir 8 has an outlet 55 at its bottom, the cross-section of which is continuously adjustable, through which the addition of paving material to the second conveyor device 52 is possible.

Similarly, the collecting device 16'' includes a screw conveyor 33 having two oppositely oriented screws 34, 35 and conveying the scraped material to the center, where it is picked up. , carried away by the conveyor device 52.

The conveyor device 52 is connected to the two side walls 3 of the collection device.
It has a rotating conveyor belt 53 that passes around a first guide pulley 54 rotatably supported between 6'' and 37''. The other guide pulleys of the conveyor device 52 are arranged on the chassis 1 of this paver.

The screw conveyor of the collecting device 16 shown in FIG.
5 is provided, which is a cylindrical chisel inserted into the corresponding hole of the screw and fixed there by a retaining ring.

In the screw conveyor whose side view of the collecting device 16 is shown in FIG.
6, the result is that the cut material 57 is successfully crushed and transported smoothly.

[Brief explanation of the drawing]

Figure 1 is a side view of a machine that pavers a road surface that has been scraped off, Figure 2 is a front view of a paving machine that has a collection device that collects scraped-off material in the center, and Figure 3 is the scraped-off material. Fig. 4 is a plan view of the collecting device shown in Fig. 3, and Fig. 5 is a front view of a paving machine with a collection device that collects scraped material from the sides. Fig. 6 is a partial view of the screw conveyor equipped with a crushing cutter, and Fig. 7 is a partial side view of the paving machine with the screw conveyor and the road surface on top of the road surface. FIG. 3 is an arrangement of supported protection plates or coverings; A... Forward direction of the machine, 1... Shaft, 2...
Front wheel, 3... Rear wheel, 4... Diesel engine,
5...Driver's seat, 6...Swivel arm, 7...Hydraulic pressure actuation cylinder, 8, 8', 8'', 8...Storage tank, 9
...Paving material, 10,32...First conveyor device, 12...Blending device, 13,46,52...Second conveyor device, 14...Mixing device, 16,1
6″...Collection device, 17,33...Screw conveyor, 34,35...Screw, 36,3
6'', 37, 37''... side wall, 16'... collection device, 43... screw conveyor, 44... screw, 36', 37'... side wall, 18, 29...
Screw distributor, 19...Stamper, 21,2
2, 23... heating device, 27... hitting device,
40,53,54...Belt conveyor, 41,4
2,45...Guiding steel plate, 47...Steel plate roller brush, 55...Crushing cutter.

Claims (1)

[Scope of Claims] 1. A machine for paving a road surface that has been scraped or stripped, which has a drive engine, and a storage tank for new material for construction on the chassis is arranged in the forward direction of the machine. A first conveyor device arranged in the front area and provided for said storage tank receives new material by a first conveyor device provided for a collection device for collecting scraped or stripped road surface material from the ground. a mixing device is arranged behind the storage tank, into which the scraped or scraped material is fed directly or indirectly by a second conveyor device; a paving machine comprising: at least one heating device for heating a road surface that has been scraped; and means for applying a paving material supplied from a mixing device and consisting of fresh material and scraped or scraped material; A collecting device 16, 16', 16'' for collecting the road surface material that has been removed or scraped off is located in the storage tank 8, 8', 8'', viewed in the forward direction A of the machine.
8, and the collection device 1
The second conveyor device 13, 46, 52 provided for the storage tanks 8, 8', 16''
A road surface paving machine, characterized in that it is guided rearwardly through the immediate vicinity of 8'', 8 and is provided at a distance from the height of the scraped or stripped road surface.2. Said second device provided for the collector 16'
Road surface paving machine according to claim 1, in which a conveyor device 46 is guided rearwardly through the side of the storage tank 8''. 3. Collecting scraped or stripped material; A laterally conveying collection device 16' is provided;
3. A road surface paving machine according to claim 2, wherein the second conveyor device 46 is constructed as a screw conveyor with a screw running in a tube. 4. The collecting device 16' for laterally conveying the scraped or stripped material has at least one screw conveyor 43 with a screw 44 twisted in one direction over its entire length. A road surface paving machine according to claim 3. 5. Behind the screw conveyor 43, seen in the forward direction A of the machine, a rotating steel roller brush 47 is provided obliquely to said screw conveyor 43 to remove the scraped or stripped smaller particle material. 5. A road surface paving machine according to claim 4, wherein the material is conveyed from the brushes to the end 51 of the collecting device 16 on the side of the conveyor device. 6. The second conveyor device 13, 52 provided for the collection device 16, 16'' is connected to the storage tank 8', 8
A road surface paver according to claim 1, wherein the road surface paver is guided rearwardly under the bottom of the road surface paver. 7 Patent in which a collecting device 16, 16'' is provided for collecting the scraped or stripped material and transporting it centrally, and the second conveyor device 13, 52 is configured as a belt conveyor 40, 53, 54 A road surface paving machine according to claim 6. 8. The collecting devices 16, 16'' centrally transporting the scraped or stripped material are each about half the length of the screw conveyor. , at least one screw having two opposite screws 34, 35.
A road surface paving machine according to claim 7, having two screw conveyors. 9. At the rear of the screw conveyor 33 as seen in the forward direction A of the machine, steel roller brushes 47 are provided which rotate at a constant angle to each other, and are used to remove scraped or stripped materials of small size. This brush collects the collected material in the collecting device 16,
Claim 8 carried in the center of the 16″
A road surface paving machine as described in paragraph. 10. The road surface according to any one of claims 1 to 9, wherein the collection device 16, 16', 16'' is fixed to the storage tank 8, 8', 8'', 8. paving machinery. 11. Claims 1 to 10, wherein the collection device 16, 16', 16'' is height adjustable.
A road surface paving machine according to any one of the following paragraphs. 12. The road surface paving machine according to any one of claims 1 to 11, wherein a crushing cutter is provided on the outer periphery of the screw of the screw conveyor. 13. The road surface paving machine according to claim 12, wherein the screw conveyor extends over the entire width of the scraped road surface. 14. The road surface paving machine according to claim 12 or 13, which stands on a road surface from which a protection plate or a covering plate has been scraped off, behind the screw conveyor when viewed in the forward direction A of the machine. . 15 The collection device 16, 16', 16'' is fixed to the storage tank 8, 8', 8'', 8,
16. The road surface paving machine according to claim 10 or 11, wherein 8', 8'', and 8 are provided on the chassis so that the height thereof can be adjusted.16. The road surface paving machine according to any one of claims 1 to 15, which has a discharge port. 17. The cross section of the opening of the discharge port can be adjusted steplessly by means of a slide plate. A road surface paving machine according to claim 16. 18. The discharge ports of the storage tanks 8, 8', 8'' are provided in the chassis 1 via the first conveyor devices 10, 32. A road surface paving machine according to claim 16 or 17, which is connected to a supply port of a blending device 12. 19. According to claim 18, a third conveyor device is provided, which extends from the blending device 12 to the mixing device 14 and terminates at the end of the blending device with a second conveyor device. The road surface paving machine described. 20. Claims 1 to 20, in which the storage tank 8 includes a dispensable outlet attached to a second conveyor device 52, the first conveyor device 10, 32 being replaced by a second conveyor device 52. 19
A road surface paving machine according to any one of the following paragraphs. 21 A patent in which the means for applying the paving material sent from the mixing device 14 is provided with a picking device 27 for picking up the scraped or stripped road surface in the forward direction when viewed in the forward direction A of the machine. A road surface paving machine according to any one of claims 1 to 20. 22. The road surface paving machine according to claim 21, wherein the paving device 27 includes a freely running spike roller. 23. The road surface paving machine according to claim 21 or 22, wherein the pulling device 27 is adjustable in height. 24. The road surface according to any one of claims 21 to 23, wherein the pulling device 27 includes a screw distributor 29 behind the spike rollers as seen in the forward direction A of the machine. Paving machinery.