JPS6026702A - Road surface re-paving apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road resurfacing device for resurfacing damaged asphalt pavement on an asphalt-paved road, and particularly for resurfacing by laminating a new composite material on top of the loosened polymeric material. It is possible to selectively carry out resurfacing by mixing the loosened old composite material and new composite material.

Conventional road surface resurfacing equipment is, for example, a road resurfacing system that uses a method called rebaving, in which scraped paving material is laid on the underside of the road surface, new paving material is layered on top of it, and then resurfaced. There is. According to this device,
Ruts, cracks, patched road surfaces, etc. are loosened, this is laid down on the underside of the road surface, and new paving materials are layered on top of that for resurfacing, making it possible to create a flat road surface at the same level as when asphalt pavement was installed. It has the advantage of being reproducible.

In addition, as other road surface paving equipment,
There is something disclosed in Publication No. 5 (title of invention: Paving machine for scraped road surface or road surface removed from pavement). This method uses a so-called remixing method, in which a worm duct with a milling scanner attached is rotated to scrape off the asphalt road surface, and the scraped paving material is mixed with new paving material in a mixing device before being re-paved. It uses a method called According to this device, the mixed paving material, which is a mixture of the scraped paving material and new paving material, is resurfaced on the road surface, so it is possible to increase the degree of bonding between the paving material particles, thereby increasing the strength of the resurfaced road surface. It has the advantage of being able to increase the

However, the conventional resurfacing devices mentioned above are all single-function devices that can perform either the repaving method or the riminoxing method, and cannot selectively perform both methods. By the way, when performing resurfacing work on asphalt-paved roads, it is often decided by the construction client whether to use the repaving method or the beam mixing method. Very expensive 2 that uses a mixing method
There was a problem that required the provision of different types of resurfacing equipment.

Therefore, the present invention has been made by focusing on the above-mentioned problems of the conventional device, and its purpose is to be able to selectively perform both the repaving method and the remixing method with one road surface resurfacing device. The purpose of the present invention is to provide a road resurfacing device. Another object of the present invention is to provide a road resurfacing device that can easily select between repaving and remixing using a simple device.

In order to achieve the above object, the present invention provides, for example, an asphalt pavement loosening means 23 for the traveling vehicle 1 as in the illustrated embodiment, and an agitation device for stirring the polymer material loosened by the dispersing means 23. means 24, new company conveying means 7.8 for conveying the new company, and said stirring means 2.
The new company conveying means 8 is equipped with a spreading means 76 that evenly spreads the stirred mixture discharged from the road surface width direction in the width direction of the road surface, and a spreading means 79 that spreads the paving mixture evenly. The company is transported along the bottom plate 12, and an opening/closing means 13 is provided on the bottom plate 12 at a position facing the stirring means 24, and the new company is transported to the stirring means 24 in accordance with the opening/closing of the opening/closing means 13. Or the spreading means 76 and the spreading means 7
The present invention relates to a road surface resurfacing device characterized in that it is configured to select whether to transport the road surface between 9 and 9 times.

The present invention will be explained below based on the drawings.

FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention, and FIG.
Figures (A) and (B) are a plan view and a sectional view taken along the line BB, respectively, showing an example of the opening/closing means in the new composite material conveying means. 3, 4, and 5 are a side plan view showing an embodiment of the stirring means and a sectional view taken along the line V-V in FIG. 3, and FIG. 6 is an example of the stirring means. FIG.

The road surface resurfacing device 1 is configured such that a front wheel 3 and a rear wheel 4 are attached to a vehicle body 2, and is self-propelled by an engine 5 mounted in the center of the vehicle body 2.

A receiving hopper 6 is installed at the front of the vehicle body 2 to receive new company from a new company transport vehicle (not shown) such as a dump truck. materials) are conveyed diagonally upward by the first chain conveyor 7 as the new company's conveyance means,
It is delivered onto the second chain conveyor 8. This second
The chain conveyor 8 of the new company is a diffusion means 7 which will be described later.
6 and the leveling means 79 to a corresponding position, and the new company is dropped between them.

As shown in FIG. 2, each chain conveyor 7.8 has endless chains 9L and 9R arranged parallel to each other at a required interval in the width direction of the vehicle body 2, and a chain Fj, 10 bridged at a predetermined interval. The chain conveyor 7 has a bottom plate 11 that covers the lower part of the upper chain part, and the chain conveyor 8 has a bottom plate 12 that covers the lower part of the lower chain part. Therefore, the chain conveyor 7 conveys the new company using the upper chain section and the bottom plate 11, and the chain conveyor 8 conveys the new company using the lower chain section and the bottom plate 12.

The chain conveyor 8 is provided with an opening/closing mechanism 13 at a position corresponding to the new composite material receiving lower 4 of the stirring mechanism 2.4, which will be described later. - This opening/closing mechanism 13 includes an opening 14 formed in the bottom plate 12 and extending in the width direction thereof, an opening/closing plate 15 that opens and closes this opening 14, a fluid pressure cylinder 16 that drives the opening/closing plate 15 to open and close, and a piston rod thereof. 17 and opening/closing plate 1
5, and an opening/closing drive mechanism 19 including a rotating arm 18 and the like connected to the opening/closing drive mechanism 19. When the piston rod 17 of the fluid pressure cylinder 16 is in an extended or contracted state, the opening/closing plate 15 is in the closed position closing the opening 14 of the bottom plate 12, and when the piston rod 17 is in an extended state, the opening/closing plate 15 is in the closed position closing the opening 14. They are each moved to an open position for release. In addition, 20 is the bottom plate 1
This is a discharge chute provided on the bottom surface of 2.

Further, a heater 22 is disposed on the front end side of the vehicle body 2 in close proximity to the road surface 21.
Reheat.

Further, between the front wheels 3 and rear wheels 4 of the vehicle body 2, a loosening means 23 for loosening the old company (asphalt paving material) is disposed at a position in contact with the road surface 21, and a stirring means on the rear side thereof. 24 are arranged in series.

As shown in FIGS. 3 and 4, an example of the loosening means 23 includes loosening mechanisms 25L and 25R symmetrically provided on the front side and a scraping comb mechanism 26 provided parallel to these mechanisms behind the loosening mechanisms 25L and 25R. and has. Scraping mechanism 25
In L and 25R, a pair of support brackets 1-28.29 are respectively attached to both ends of a fixed shaft 27 connected at the center. As shown, the pair of guide tubes 30 and 31 are fitted in parallel. Sliding shafts 32.33 are respectively inserted into the guide tubes 30.31, and both ends of these sliding shafts 32.33 are connected by connecting plates 34.35.

A scarifier 36 serving as a rotary scraping section is rotatably housed between these connecting plates 34 and 35.

This scarifier 36 includes a rotating shaft 37 rotatably supported between connecting plates 34 and 35, a cape-shaped screw 3a formed on this rotating shaft 37, and this screw 38.
It consists of a large number of pin-shaped cutters 39 protruding from the outer periphery at required intervals. And the connecting plate 34
．． A scraping blade 40 extending along the axial direction of the scarifier 36 is integrally disposed slightly on the rear side of the scarifier 36 between the scarifiers 35 and 35 . In this case, the downward protrusion length of the scraping blade 40 can be adjusted using an adjustment bolt 41.

Furthermore, the loosening mechanisms 25L and 25R are connected to the fixed shaft 2.
A fluid pressure cylinder 42 is disposed along 7, a cylinder tube 43 of which is fixed to the center of the fixed shaft 27, and a piston rod 44 connected to the connecting plate 34. Therefore, by extending the piston rod 44, the loosening mechanisms 25L and 25R protrude outward, and conversely, by contracting the piston rod 44, they slide inward, and the outer end positions of the loosening mechanisms 26 It becomes approximately equal to the outer end position. In addition, in the scraping mechanisms 25L and 25R, the screws 38 of the scarifiers 36 have opposite helical directions, and each rotating shaft 37 is connected to a reversible hydraulic motor 46 as a rotational drive source via a drive chain 45.
is connected to.

Further, the loosening mechanism 26 has a housing 47 whose lower end is open.
A scarifier 48 is rotatably supported therein.

A large number of scarifiers 48 are arranged at required intervals on a rotating shaft 49 disposed rotatably in the housing 47, a screw 50 formed on the rotating shaft 49, and a screw 50 on the outer periphery of the screw 50. The screw 50 has a spiral direction reversed at its center. The rotating shaft 49 is connected to the drive chain 5.
2 is connected to a one-way hydraulic motor 53 as a rotational drive source, and as the hydraulic motor 53 rotates, the old company that has been loosened is gathered to the center side. Further, a scraping blade 54 extending along the axial direction of the scarifier 48 is integrally disposed slightly behind the scarifier 48 in the housing 47 . In this case, the downward protrusion length of the blade 54 can be adjusted by an adjustment bolt 55.

Each of the sowing mechanisms 25L, 25R, and 26 has a gate-shaped frame when viewed from the side, which is suspended and supported by a common up-and-down movement mechanism 56, which is rotatably supported on the vehicle body 2 and constituted by, for example, a fluid pressure cylinder. 57 so as to be movable up and down. That is, the vertical shaft 5 disposed on the frame 57
A support arm 60.61 is slidably fitted to 8.59, and an engagement plate portion 62 has a support arm 60 formed at its lower end.
A support arm 61 is attached to a housing 47 of the loosening mechanism 26, and is slidably engaged with a guide frame 63 fixed to the loosening mechanisms 25L and 25R to support the same. Vertical movement mechanisms 64 and 65 constituted by fluid pressure cylinders are interposed between the frame 57 and the engagement plate portion 62 and between the frame 57 and the housing 47. Therefore, by operating the vertical movement mechanism 56, the scarifiers 36, 4B and the scraping blades 40, 54 of the scraping mechanisms 25L, 25R and 26 are removed.
The scarifiers 36 and 48 and the scraping blades 40 and 54 are moved between an upper position where they are spaced upward from the road surface 21 and a lower position where they are in contact with the road surface 21. In addition, by operating the vertical movement mechanisms 64 and 65, the scarifiers 36 of the scraping mechanisms 25L, 25R, and 26
, 48 and the scraping blades 40, 54 are moved between a position where they contact the road surface 21 and a scraping position where they bite into the road surface 21 below. Note that 66 is a rotating arm that guides the vertical movement of the loosening mechanisms 25L and 25R interposed between the fixed shaft 27 and the vehicle body 2.

As shown in FIG. 6, the stirring means 24 has a storage port 67 for storing the old mixture scraped in the center by the scarifier 48 of the scraping mechanism 26, and a discharge port 68 opposite to the storage port 67. The casing 69 has a casing 69 formed therein. Inside the housing 69, a rotating shaft 70 is provided at a predetermined interval in the left and right direction.
．． 71 are arranged in parallel, and these rotation axes 70 and 71
A plurality of stirring blades 72 are respectively arranged so as not to collide with each other, and blades 73 attached to the tips of these blades are inclined so as to stir the mixed material and transfer it rearward. Furthermore, a new composite material receiving lower 4 is formed on the upper surface of the housing 69 to receive the new composite material falling from the discharge chute 20 of the opening/closing mechanism 13 described above.

The stirred mixture discharged from the housing 69 is heated by a heater 75 disposed behind it, and then is averaged in the width direction of the road surface 21 by a diffusion means 76. This spreading means 76 includes a screw conveyor 77 whose spiral direction is changed at the center.
and a blade screed 78 arranged at a rear position thereof.
After being averaged to some extent by a screw conveyor 77, it is further averaged by a blade screed 78.

After that, a leveling means 79 provided at the rear end of the vehicle body 2
Spread the mixture evenly. An example of this spreading means 79 includes a screed 81 that vibrates the road surface, which is rotatably attached to the vehicle body 2 by a rotary arm 80, and a screed 81 that is disposed in front of the screed 81 and is conveyed by a chain conveyor 8. A screw core bearer 82 is used to spread the new composite material in the width direction of the road surface.

The heaters 22 and 75 are supplied with propane gas from an LPG cylinder 83 placed on the vehicle body 2, and burn it with a gas burner (not shown) to heat the road surface.

Next, the effect will be explained. First, a case will be described in which the resurfacing method is a so-called remixing method in which old composite material loosened by a scraping means is mixed with new composite material and the mixed composite material is spread evenly. In this case, the piston rod 17 of the fluid pressure cylinder 16 in the opening/closing mechanism 13 is extended to open the opening 14 in the bottom plate 12. Therefore, the new composite material stored in the receiving impeller 6 is conveyed to the upper center of the vehicle body 2 by the chain conveyor 7, and then falls onto the chain conveyor 8, and is thus conveyed to the opening 14 position. Since it is released, it falls downward along the discharge chute 20 and is thrown into the new composite material receiving lower 4 of the stirring means 24.

In addition, before starting resurfacing, each sowing mechanism 25L
, 25R, and 26, depending on the road surface width to be resurfaced when the piston rod of the vertical movement mechanism 56 is contracted, that is, when the scarifiers 36 and 4B are separated from the road surface.
Front side loosening mechanism 25L of the loosening means 23, 2
5R by driving its fluid pressure cylinder 42 to project outward, and loosening mechanisms 25L, 25R, and 26.
Adjust the protruding length of the scraping blades 40 and 54.

In this state, first, a road surface heating vehicle (not shown) equipped with a heater is set as a leader, and the road surface resurfacing device 1 is caused to travel following the vehicle. At this time, the distance between the two is set to such an extent that the asphalt pavement surface, which has been softened by heating by the road heating vehicle, will not harden.

Next, a scraping means 23 is first applied to the softened road surface 21.
The front side loosening mechanisms 25L and 25R are lowered by the vertical movement mechanism 64 while the scarifier 36 is driven to rotate so as to scrape up the old mixed material scraped in the center by the reversible hydraulic motor 46. . As a result, the old composite material that has been softened by the road surface heating vehicle is loosened and collected in the center by the cooperation of the scarifier 36 and the scraping blade 40.

Then, when the road surface resurfacing device 1 moves forward and the rear scraping mechanism 26 reaches the position of the road surface loosened by the front scraping mechanisms 25L and 25R, the vertical movement mechanism 65 of the rear scraping mechanism 26 is driven. Then, the scarifier 48 and the scraping blade 54 are lowered.

Therefore, the road surface in the center that has not been loosened by the front loosening mechanisms 25L and 25R is loosened by the rear loosening mechanism 26, and therefore, the road surface begins to be loosened in a state aligned on a line perpendicular to the width direction of the road surface. can do.

In this way, the loosened old mixture is collected in the center by the loosening mechanisms 25L, 25R, and 26, so that the old mixture collected as the road resurfacing device 1 travels is transferred to the stirring means 24. It is housed in the housing 69 of the housing 69 through the housing opening 67 thereof. On the other hand, the new company dropped from the opening 14 from the receiving hopper 6 via the chain conveyor 7.8 is supplied into the housing 69 of the stirring means 24, so this new company and the loosened old mixed material are supplied. are evenly stirred and mixed by the stirring blades 72. Then, the stirred and mixed new and old mixed materials are transferred to the discharge port 6 by the transfer action of the stirring blades 72.
It is transferred to the 8 side and dropped onto the road surface 21.

The mixed material that has fallen onto the road surface 21 is reheated by a heating rack 75, then uniformly spread in the width direction of the road surface by a spreading means 76, and then spread evenly by a spreading mechanism 79 onto a flat surface. It will be finished.

In this way, when the road surface resurfacing work progresses and reaches the end point of the resurfacing work, first the front scraping mechanism 25L
, 25R is driven in the opposite direction to the above to raise the scarifier 36 and the scraping blade 40. Next, when the rear loosening mechanism 26 reaches the work end point, the vertical movement mechanism 6 of the sowing loosening mechanism 26 is moved.
5 in the opposite direction to the above to raise the scarifier 48 and the sowing blade 54. Thereby, the loosening end position at the work end point can be aligned on a line perpendicular to the road surface.

In addition, when resurfacing by the so-called repaving method, in which the new material is layered and spread over the scraped country wood, first the fluid pressure cylinder 16 in the opening/closing mechanism 13 provided on the chain conveyor 8 is driven. The piston rod 1
The opening 14 of the bottom plate 12 is expanded and contracted by the opening/closing plate 15.
゛.

As a result, the new company stored in the receiving machine 6 is transported by the chain conveyor 7.8 to the spreading means 76.
and falls onto the road surface 21 between the leveling means 79.

In this way, the road surface resurfacing device 1
is run, the old mixed material is scraped by the scraping means 23, only this loosened old mixed material is stirred by the stirring means 24, and then the stirred old mixed material is sent to the discharge port 68 of the stirring means 24. More discharged onto the road surface. Then, the discharged stirring polymer material is uniformly spread in the width direction of the road surface by the spreading means 76. The new company falling from the chain conveyor 8 is stacked on top of the spread wood. This laminated new composite material is uniformly spread in the width direction of the road surface by the screw conveyor 82 of the leveling means 79, and the restored composite material and the new company's laminated composite material are spread evenly by the screed 81 and spread on a flat surface. It will be finished.

In this way, even when using the repaving method, the scraped old composite material is stirred by the stirring means, so that the deteriorated old composite material can be appropriately agitated, and the road surface is improved when resurfacing. It is possible to prevent variations in the quality of the old composite material in the width direction.

In the above embodiment, the case where the loosening means 23 has a two-stage configuration of the loosening mechanisms 25L, 25R, and 26 has been described, but it can also be configured with only one loosening mechanism. The loosening mechanism is not limited to a scarifier, but any other loosening mechanism may be used as long as it is capable of collecting the loosened old mixture and supplying it to the stirring means 24.

As explained above, according to the present invention, in a running vehicle,
A means for loosening the asphalt pavement, a stirring means for stirring the old mixture loosened by the loosening means, a new company conveying means for conveying the new company, and a stirring mixture discharged from the stirring means. A spreading means that spreads the paving mixture uniformly in the width direction of the road surface and a leveling means that spreads the paving mixture evenly are provided, and the new company conveying means conveys the new company along the bottom plate and An opening/closing means is provided at a position opposite to the stirring means, and depending on the opening/closing of the opening/closing means, it is selected whether to transport the new company to the stirring means or between the spreading means and the spreading means. It was configured as follows. For this reason, with one road surface resurfacing device, the new company is conveyed to the stirring means, and the old composite material and the new company, which have been loosened by the scraping means, are stirred and mixed to perform resurfacing or mixing. The method is to convey the new material between the spreading means and the leveling means, loosen it with the scraping means, stir it with the stirring means, and then layer it on the country wood spread in the width direction of the road surface by the spreading means and re-layer it. Either road surface resurfacing method can be implemented, such as paving or paving method. Furthermore, the configuration for this purpose is extremely simple, as it is only necessary to provide an opening/closing means in the transporting means and to select the destination of the new company using this opening/closing means.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention, and FIG.
Figures (A) and (B) are a plan view and a sectional view taken along the line BB, and FIG. 3, showing an example of the opening/closing means. 4 and 5 are a plan view, a side view, and a sectional view taken along the line V-V in FIG. 3, showing an example of the stirring means, and FIG. 6 is a sectional view showing an example of the stirring means. 1...Road resurfacing device, 2...Vehicle body,
6...Receiving hopper, 7,8...Chain conveyor, 12...Bottom plate, 13...
Opening/closing mechanism, 14... Opening, 15... Opening/closing plate, 19... Opening/closing drive mechanism, 20...
・Discharge chute, 23... Scraping means, 2
4... Stirring means, 76... Diffusion means,
79...Means for leveling the floor.

Claims (1)

[Claims] A traveling vehicle includes a means for loosening the asphalt pavement surface, a stirring means for stirring the old mixture loosened by the loosening means, a new mixture conveying means for conveying the new mixture, and discharge from the stirring means. The new composite material conveying means spreads the new composite material onto the bottom plate. An opening/closing means is provided at a position facing the stirring means on the bottom plate, and depending on the opening and closing of the opening/closing means, the new composite material is transported to the stirring means or the spreading means and the spreader are spread evenly. A road surface resurfacing device, characterized in that it is configured to select whether to convey the road surface between the resurfacing means.