JPH0326241B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road surface resurfacing device for resurfacing damaged asphalt pavement on an asphalt-paved road. The road surface material is made uniform.

This type of road resurfacing device heats the asphalt paved road surface by driving a road heating vehicle in the lead.
By running the road resurfacing equipment following this movement, the asphalt pavement material (old composite material) that forms the road surface is easily loosened by the road resurfacing equipment, and this loosened old composite material is used to create new asphalt. By mixing it with paving materials (new composite material) or by layering the new composite material on top of the old composite material and then leveling it, you can flatten road surfaces that have lost their flatness due to ruts, weather conditions, etc. It can be recycled onto the road surface.

By the way, in this type of road surface resurfacing equipment, at least one of the amount of old composite material and the amount of new composite material is adjusted so that the road surface level is at an appropriate level when the road surface is resurfaced to be flat. It is necessary to adjust the amount of mixed material used to a predetermined value. The reason why the amount of resurfacing material is adjusted in this way is that if the amount of resurfacing material is insufficient, the thickness of the paved road surface will decrease and the durability of the paved road will deteriorate. When the amount is too high, the road surface level rises, making it impossible to maintain a predetermined road surface height, and in either case, there is a problem in that accurate resurfacing cannot be performed.

Therefore, the present invention was made by focusing on the problems of the conventional device, and its purpose is to detect the cross-sectional shape of the road surface and calculate the amount of resurfacing material required from the road surface shape. The object of the present invention is to provide a road surface resurfacing device that can solve the problems of the conventional devices by adjusting the amount of resurfacing mixture based on the calculation result.

In order to achieve the above object, the present invention, for example, as in the illustrated embodiment, loosens the old asphalt pavement material that forms the road surface by a scraping mechanism 26, and uses it together with the new asphalt pavement material or with the new asphalt pavement material. In a road surface resurfacing device 1 that resurfaces a road surface by layering and spreading new asphalt paving material on top, a road surface shape detection device 85 detects the cross-sectional shape of the road surface before being scraped.
and a calculation means 108 for calculating at least one of the intake amount U of the old asphalt pavement material and the supply amount S of the new asphalt pavement material based on the detection signal of the road surface shape detection device 85, and the calculation result of the calculation means 108. The present invention relates to a road resurfacing device characterized by comprising a control means 109 for controlling at least one of an old asphalt pavement material intake device 26 and a new asphalt pavement material supply device 10 based on the following.

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

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

First, to explain the configuration, the road surface resurfacing device 1 has a front wheel 3 and a rear wheel 4 attached to a vehicle body 2.
The swash plate pump 7 is driven by a swash plate pump 7, and is driven to rotate by a hydraulic drive motor (not shown).

A receiving hopper 9 is provided at the front of the vehicle body 2 to receive new composite material (new asphalt paving material) from a new composite material transport vehicle (not shown) such as a dump truck. The new composite material is conveyed obliquely upward by a first chain conveyor 11 constituting the new composite material supply means 10 and delivered onto a second chain conveyor 12. This second chain conveyor 12 transports the new composite material to a position corresponding to between a spreading mechanism 80 and a leveling mechanism 81, which will be described later, and drops the new composite material between them.

As shown in FIG. 2, each chain conveyor 11, 12 has endless chains 13L, 13R arranged in parallel at a required interval in the width direction of the vehicle body 2, with scraping plates 14 being bridged at a predetermined interval. The conveyor 11 has a bottom plate 15 that covers the lower part of the upper chain part, and the chain conveyor 12 has a bottom plate 16 that covers the lower part of the lower chain part. Therefore, the chain conveyor 11 has an upper chain portion and a bottom plate 1.
The new composite material is conveyed by chain conveyor 1.
2 conveys the new composite material by the lower chain part and the bottom plate 16. The chain conveyor 12 is provided with an opening/closing mechanism 17 at a position corresponding to a new composite material receiving port 77 of a stirring mechanism 27, which will be described later. This opening/closing mechanism 17 includes an opening 18 formed in the bottom plate 16 and extending in the width direction thereof, an opening/closing plate 19 for opening and closing this opening 18, a fluid pressure cylinder 20 for driving the opening/closing plate 19 to open and close, a piston rod 21 thereof, and The opening/closing drive mechanism 23 includes a rotating arm 22 and the like connected to the opening/closing plate 19. When the piston rod 21 of the fluid pressure cylinder 20 is in the contracted state, the opening/closing plate 19 is in the closed position closing the opening 18 of the bottom plate 16, and when the piston rod 21 is in the extended state, the opening/closing plate 19 is released into the opening 18. are respectively moved to the open position. In addition, 24 is the bottom plate 16
This is a discharge chute provided on the underside of the

Further, between the front wheels 3 and rear wheels 4 of the vehicle body 2, a scraping mechanism 26 is disposed at a position in contact with the road surface 25, which scrapes the asphalt pavement material and scrapes or scrapes the scraped old composite material. At the same time, a stirring mechanism 27 is connected to the rear side thereof.

An example of the loosening mechanism 26 is shown in FIGS.
As shown in the figure, it has loosening mechanisms 28L and 28R provided symmetrically on the front side, and a loosening mechanism 29 provided parallel to these mechanisms behind them. The loosening mechanisms 28L and 28R have a pair of support brackets 31 and 32 attached to both ends of a fixed shaft 30 connected at the center, and a pair of guide tubes 33 below these as shown in FIG. , 34 are fitted in parallel. Then, sliding shafts 35 and 36 are installed in the guide tubes 33 and 34, respectively.
are inserted, and both outer ends of these are connected to the connecting plates 37, 3.
8. These connecting plates 37,
A scarifier ear 39 serving as a rotary scraping section is rotatably housed between the holes 38 and 38 . This scarifier 39 includes a rotating shaft 40 rotatably supported between connecting plates 37 and 38, and a rotating shaft 40 that is rotatably supported between connecting plates 37 and 38.
It consists of a spiral screw 41 formed in a spiral shape, and a large number of pin-shaped cutters 42 protruding from the outer periphery of the screw 41 at required intervals. A scraping blade 43 extending along the axial direction of the scarifier ear 39 is integrally disposed slightly rearward of the scarifier ear 39 between the connecting plates 37 and 38. In this case, the scraping blade 43
The length of the downward protrusion can be adjusted using an adjustment bolt 44.

Furthermore, the loosening mechanisms 28L and 28R are
A fluid pressure cylinder 45 is arranged along the fixed shaft 30, this cylinder tube 46 is fixed to the central part of the fixed shaft 30, and a piston rod 47 is connected to the connecting plate 3.
7 to the guide tube 33. Therefore, by extending the piston rod 47, the loosening mechanisms 28L and 28R protrude outward, and by conversely contracting the piston rod 47, they slide inward, and the outer end positions of the loosening mechanisms 28L and 28R protrude outward. It becomes approximately equal to the outer end position of No. 29. In addition, in the scraping mechanisms 28L and 28R, the screws 41 of the scarifier ears 39 are spiraled in opposite directions, and each rotating shaft 40 is connected to the drive chain 4.
8 to a reversible hydraulic motor 49 as a rotational drive source. Therefore, when the reversible hydraulic motor 49 is rotated in the normal direction, the loosened old composite material is scraped into the central part, and when the reversible hydraulic motor 49 is rotated in the reverse direction, the loosened old composite material is scraped out to the outside.

Further, in the scraping mechanism 29, a scarifier ear 51 is rotatably supported in a casing 50 whose lower end is open. This scarifier 51 includes a rotary shaft 52 rotatably disposed within a casing 50, a screw 53 formed on the rotary shaft 52, and a large number of pin-shaped cutters 54 protruding from the outer periphery at required intervals. The screw 53 has a helical direction reversed at its center. and rotation axis 5
2 is connected to a reversible hydraulic motor 56 as a rotational drive source via a drive chain 55, and as the hydraulic motor 56 rotates, the scraped old composite material is gathered to the center side or scraped out. It is configured. Further, a scraping blade 57 extending along the axial direction of the scarifier ear 51 is integrally disposed slightly behind the scarifier ear 51 within the housing 50 . In this case, the blade 57 is
Its downward protrusion length can be adjusted by an adjustment bolt 58.

In addition, each scraping mechanism 28L, 28R and 2
Reference numeral 9 denotes a vertical movement mechanism 59 rotatably supported by the vehicle body 2 and constituted by a common fluid pressure cylinder, for example.
It is supported in a vertically movable manner by a gate-shaped frame 60 when viewed from the side where it is suspended and supported by. That is,
Support arms 63 and 64 are slidably fitted to vertical shafts 61 and 62 provided on the frame 60, and an engagement plate portion 65 is formed at the lower end of the support arms 63.
The support arm 64 is slidably engaged with a guide frame 66 fixed to the loosening mechanisms 28L and 28R to support the loosening mechanisms 28L and 28R.
It is attached to the housing 50 of. Then, between the frame 60 and the engagement plate part 65 and the frame 60
Vertical movement mechanisms 67 and 68 constituted by fluid pressure cylinders are interposed between the housing 50 and the housing 50 . Therefore, by operating the vertical movement mechanism 59, the scarifier ears 39, 51 and the scraping broads 43, 57 of the scraping mechanisms 28L, 28R, and 29 are moved to the upper position where they are separated upward from the road surface 25, and the scarifier ears 39, 51, and The scraping blades 43 and 57 are moved between a lower position where they contact the road surface 25. In addition, the vertical movement mechanism 67,
By operating 68, the loosening mechanism 2
8L, 28R and 29 scarifier ear 39,5
1 and the scraping blades 43 and 57 on the road surface 25
It is moved between the position where it touches and the loosening position where it digs in below. Note that 69 is a rotating arm that guides the vertical movement of the loosening mechanisms 28L and 28R interposed between the fixed shaft 30 and the vehicle body 2.

The stirring mechanism 27 is connected to the vehicle body 2 as shown in FIG.
A housing 70 attached to the lower part of the housing 7
0, two mutually parallel rotating shafts 71 and 72 extending along the traveling direction of the vehicle body, a plurality of stirring blades 73 attached to these, and the rotating shaft 7.
1 and 72, and a rotary drive mechanism 74, which is constituted by, for example, a hydraulic motor.
The casing 70 has an old mixed material insertion port 75 formed in the front plate facing the scraping mechanism 26, and an agitated mixed material discharge port 76 formed in the rear plate facing this, and furthermore, A new composite material receiving port 77 is formed in the top plate facing the opening/closing mechanism 17. In this case, the blade part 78 formed at the tip of the stirring blade 73 is inclined at about 45 degrees, thereby transporting the old composite material or the mixed composite material of the old composite material and the new composite material backward while stirring, It is dropped from the discharge port 76 onto the road surface.

The stirred mixture discharged from the stirring mechanism 27 is heated by a heater 79 disposed behind it, and then averaged in the width direction of the road surface by a diffusion mechanism 80. This diffusion mechanism 80 is composed of a screw conveyor 80a whose spiral direction is changed in the center, and a blade screed 80b disposed at a position behind the screw conveyor 80a. further average it out.

Thereafter, a leveling mechanism 81 provided at the rear end of the vehicle body 2 spreads the composite material evenly. An example of this leveling mechanism 81 includes a screed 83 that vibrates the road surface, which is rotatably attached to the vehicle body 2 by a rotary arm 82, and a chain conveyor 12 disposed in front of the screed 83. The screw conveyor 84 is configured to spread the new composite material transported in the road surface width direction.

Further, a road surface shape detection device 85 is disposed between the front wheel 3 and the scraping mechanism 26. An example of this road surface shape detection device 85 is configured as shown in FIG.

That is, it has a machine frame 88 formed in a U-shape from a horizontal rod portion 86 and a vertical rod portion 87 extending downward from both ends thereof, and a guide roller 89 is rotatably attached to the lower end of the vertical rod portion 87. It is pivoted to. A pulse generator 90 as a rotation detector is attached to the rotating shaft of one guide roller 89, and the pulse generator 90 outputs a number of pulse signals proportional to the amount of rotation of the guide roller 89. It is counted by the counter 90a.

Further, a guide bar 91 is bridged between the vertical rod portions 87 of the machine frame 88 in parallel with the horizontal rod portion 86, and a carriage 92 is guided and supported by the guide bar 91 so as to be slidable in the width direction of the road surface. Carriage 92
A road surface distance detector 93 for measuring the distance to the road surface is attached at a position facing the road surface. An example of the road surface distance detector 93 uses ultrasonic waves to measure the time from the time of ultrasonic wave transmission to the reception of the reflected wave reflected by the road surface, thereby detecting the distance between the harmonic wave transmitters 94a and 94b and the road surface. It has a configuration that measures the distance Xi between the two and outputs distance measurement data.

The carriage 92 is reciprocated in the road surface width direction by the rotation of a screw shaft 96 that is rotationally driven by, for example, a servo motor 95, and its movement position is detected by a rotation detector 97 that detects the rotation of the screw shaft 96. It is then detected. An example of the rotation detector 97 is the screw shaft 9
6, and a photointerrupter 99 having a light emitting element and a light receiving element facing each other with the rotation detection plate 98 in between. The carriage 92 is determined from the pulse signal for each revolution of the screw shaft 96 output from
The amount of movement can be detected. In practice, a pulse counter 99a counts a predetermined number of pulse signals from the photointerrupter 99 to detect that the carriage 92 has reached a predetermined position.

Note that 100 is a micro switch that detects the left end of the carriage 92 attached to the vertical rod portion 87 of the machine frame 88.

As shown in FIG. 8, the count signal of the pulse counter 90a, the detection signal of the distance detector 93, the count signal of the pulse counter 99a, and the switch signal of the micro switch 100 are supplied to the microcomputer 101. From this microcomputer 101 to the servo motor 95
A drive control signal of , road surface shape data representing a calculation result to be described later, a drive signal for the new composite material supply mechanism 10, and a drive signal for the loosening mechanism 26 that takes in the old composite material are output.

The microcomputer 101, as shown in FIG. 8, is composed of an interface circuit 102, an arithmetic processing unit 103, and a storage device 104, and a vehicle mileage determining means 105 as shown in FIG.
Carriage positioning means 106, road distance data storage means 107, carriage movement end determination means 1
08, a resurfacing mixture material amount calculation means 109 and a new mixture material and/or old mixture supply device driving means 110 are provided.

Here, the vehicle travel distance determination means 105 counts the pulse signals of the pulse generator 90 at the start of travel, and when the count value reaches a predetermined value, for example, 100 pulse signals, the vehicle travels a predetermined distance. It is determined that this has occurred, and a determination signal representing this is output.

The carriage positioning means 106 causes the servo motor 95 to be driven by the determination signal, and stops driving the servo motor 95 every time the number of revolutions thereof reaches a predetermined value. In this case, the carriage 92 is moved in the direction by the drive of the servo motor 95, and the distance traveled each time is determined by how many divisions in the road surface width direction the distance data is sampled. It is possible to measure the road surface shape with great accuracy.

The road surface distance data storage means 107 stores information on the carriage 92 by means of the carriage positioning means 106.
Distance data from the distance detector 93 is stored in the storage device 104 each time the distance detector 93 is positioned.

The carriage movement end determination means 108 outputs a movement end determination signal when the carriage 92 reaches the right end position. For example, when the number of data samplings in the distance data storage means 107 reaches a predetermined value, the carriage 92 reaches the right end position. The end of movement determination signal is output indicating that the end of movement has been reached.

The resurfacing material amount calculation means 109 calculates a plurality of distance data Xi (i=1, 2, . . . n )
is read out, and based on these and the pre-stored travel distance L and road surface width W, the amount of additional mixture T for resurfacing is determined.
is calculated according to the following formula.

T=[{ _o 〓 ⁱ⁼¹ (Xi-Xo)}/n]・L・W...(1) However, Xo is the distance between the ultrasonic transmitter 94 of the distance detector 93 and the reference road surface R is the distance.

The supply device driving means 110 drives the new mixture supply device 10 and/or the old mixture loosening mechanism 26 based on the calculation result of the resurfacing mixture amount calculation means 109 to control the amount of mixture supplied. .

Note that 111 and 112 are a display for displaying and a recording device for recording the data stored in the road surface distance data storage means 107 and/or the data for the resurfacing mixture amount calculation means 109.

Next, the effect will be explained. First, a case where the resurfacing method is a so-called remixing method in which the loosening mechanism 26 mixes the loosened old composite material with the new composite material and spreads the mixed composite material will be described. In this case, the opening/closing mechanism 17 is opened, and the new composite material stored in the receiving hopper 9 is conveyed to the upper center of the vehicle body 2 by the chain conveyor 11, and then dropped onto the chain conveyor 12, and then When the material is transported to the opening/closing mechanism 17 position, the opening/closing mechanism 17 is released, so the new composite material falls downward and is introduced into the new composite material receiving port 77 of the stirring mechanism 27.

In addition, before starting resurfacing, each of the scraping mechanisms 28L, 28R, and 29
and the front side loosening mechanisms 28L, 28R of the loosening mechanism 26 in accordance with the width of the road surface to be resurfaced with the piston rod 68 contracted, that is, with the scarifiers 39, 51 separated from the road surface.
is caused to protrude outward by driving the fluid pressure cylinder 45, and the protruding lengths of the scraping blades 43 and 57 of the scraping mechanisms 28L, 28R, and 29 are adjusted. In addition, the guide roller 89 of the road surface shape measuring device 85 is connected to the reference surface, for example, the L-shaped groove 111 on the road shoulder.
and contact the center line position.

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.

When the road surface resurfacing device 1 starts running, first,
Vehicle mileage determination means 105 of microcomputer 101 is activated, and based on this, carriage positioning means 106 is activated. Therefore, the carriage 92 moves from the left end to the right by a predetermined distance and then stops. Each time the carriage 92 stops, the distance data storage means 107 is activated to store the distance measurement data from the distance detector 93 in the storage device 104.

When the carriage 92 reaches the right end by repeating the above operations, the carriage movement end determination means 108
A movement end determination signal is output from the resurfacing unit 100, and based on this, the resurfacing material amount calculation means 109 is activated. Therefore, the required additional amount S of mixed material for a predetermined moving distance of the road surface resurfacing device 1 is calculated.

The mixture supply device drive control means 110 is driven based on the calculated additional mixture amount S, and the new mixture supply device 10 is controlled so that the new mixture supply amount becomes the additional material amount S. , the front side loosening mechanism 2 of the loosening mechanism 26 which is the old mixed material supply device
The scarifiers 8L and 28R are lowered by the vertical movement mechanism 67 while their scarifiers 39 are driven in normal rotation so as to scrape up the old mixture scraped by the reversible hydraulic motor 49 in the central part. As a result, the skyfire ear 39 and the scraping blade 4
3, the old composite material that has been softened by the road surface heating vehicle is loosened and collected in the center.

When the road resurfacing device 1 moves forward and the rear loosening mechanism 29 reaches the position of the road surface loosened by the front side loosening mechanisms 28L and 28R, the vertical movement mechanism 68 of the rear loosening mechanism 29 moves forward. The scarifier ear 51 and the scraping plate 57 are driven down. Therefore, the road surface in the central part that has not been loosened by the front loosening mechanisms 28L and 28R is loosened by the rear loosening mechanism 29, so that the road surface is aligned on a line perpendicular to the width direction of the road surface. You can start loosening with .

In this way, the scraped old composite material is collected in the center by the scraping mechanisms 28L, 28R, and 29, so that the old composite material collected as the road resurfacing device 1 runs is agitated. It is accommodated in the housing 70 of the device 27 through its accommodation opening 75. On the other hand, in the case 70 of the stirring device 27, the opening 1
Since the new composite material dropped from 8 is being supplied,
This new composite material and the loosened old composite material are mixed into the stirring blade 7.
3, the mixture is stirred and mixed evenly. in this case,
The amount of the old and new mixed material is the sum of the old material used to loosen the road surface and the additional new material of the additional material amount S, and is an amount appropriate for maintaining the road surface at the standard level.

Then, the stirred and mixed old and new composite materials are transferred to the discharge port 76 side and dropped onto the road surface 25 by the transfer action of the stirring blades 73.

The mixed material that has fallen onto the road surface 25 is reheated by the heater 79, then uniformly spread in the width direction of the road surface by the diffusion mechanism 80, and then spread evenly by the leveling mechanism 81 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 up and down movement mechanisms 67 of the front scraping mechanisms 28L and 28R are driven in the opposite direction to the above to remove the scarifier ear 39 and scrape. Raise the blade 43. Next, when the rear scraping mechanism 29 reaches the work end point,
The vertical movement mechanism 68 of the scraping mechanism 29 is driven in the opposite direction to the above to raise the scarifier ear 51 and the scraping blade 57. This results in
The scraping 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 new composite material is layered and spread over old composite material that has been scraped, first the fluid pressure cylinder 20 in the opening/closing mechanism 17 provided on the chain conveyor 12 is The piston rod 21 is driven to contract and the opening 18 of the bottom plate 16 is closed by the opening/closing plate 19. As a result, the new composite material stored in the receiving hopper 9 is conveyed by the chain conveyors 11 and 12 and falls onto the road surface 25 between the spreading device 80 and the leveling device 81.

In this way, the road surface resurfacing device 1 is run in the same manner as described above, the old mixture is loosened by the scraping mechanism 26, and only the loosened old mixture is stirred by the stirring mechanism 27, and then, This stirred old composite material is discharged onto the road surface from the discharge port 76 of the stirring mechanism 27. Then, the discharged mixed mixed material is uniformly spread in the width direction of the road surface by a spreading device 80. The new composite material falling from the chain conveyor 12 is layered on top of the spread old composite material, so the layered new composite material is uniformly spread in the width direction of the road surface by the screw conveyor 84 of the leveling device 81. Then, it is leveled with a screed 83 and finished into a flat surface.

In this way, even when using the repaving method, the loosened old composite material is stirred with a stirring device, so 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 direction.

Next, a description will be given of a processing procedure when each of the above-mentioned means in the microcomputer 101 is realized by a program mainly based on a microprocessor.

FIG. 10 shows this processing procedure. When the road surface resurfacing device 1 starts running, the program starts and, in step, first outputs a drive control signal to drive the servo motor 95 in the normal rotation. , move the carriage 92 to the right. Then, in a step, the count value of the pulse counter 99a supplied with the pulse signal of the photointerplater 99 is read, and then, in a step, it is determined whether the carriage 92 has moved a predetermined distance. The determination in this case is made based on whether the count content of the pulse counter 99a has reached a predetermined value. If the judgment result in this step is that the carriage 92 has not moved a predetermined distance, the process returns to the step, and if the carriage 92 has reached the predetermined distance, the process proceeds to the step to move the servo motor 9.
Stop the rotation of 5.

Next, the pulse counter 99a is reset in a step, and then the carriage 92 is reset in a step.
The distance Xi between the distance detector 93 and the road surface at the current position is read from the distance detector 93 as distance measurement data, and this is temporarily stored in a predetermined storage area of the storage device 104.

Next, proceed to step 9 and move the carriage 9.
2 has reached the right end. The determination in this case is made by determining whether the number of distance measurement data stored in the storage device 104 in the step described above has reached a predetermined value. Then, steps are repeated until the carriage 92 reaches the right end, and when the carriage 92 reaches the right end, the process moves to step, in which the distance measurement data stored in the storage device 104 is read out.
The additional mixed material amount S is calculated by calculating the above equation (1).

Next, proceeding to step, based on the calculation result of step, the chain conveyors 11 and 12 of the new material supply device 10 are driven for a predetermined period of time, and the new material corresponding to the additional amount of material is transferred to the stirring mechanism 27 or the spreading mechanism. 81. In this case, the chain conveyors 11 and 12 are driven for a time commensurate with the required amount of mixed material (or the chain conveyor speed is controlled or the gate height is controlled), and the new mixed material is transferred to the stirring mechanism. 27 or to a position in front of the leveling mechanism 81.

Next, the process moves to step 1, where the servo motor 95 is reversed, and then, in step 1, it is determined whether or not the micro switch 100 is on. When the micro switch 100 is in the off state,
Returning to the step, when the micro switch 100 is turned on, the process moves to step 〓〓.

In this step, it is determined whether or not to finish paving. The determination in this case is made by determining whether or not a paving end switch provided in the cockpit has been pressed. When the paving end switch is not pressed, the process moves to step 〓〓 and travel data is read. The running data in this case is obtained by reading the contents of the pulse counter 90a. Next, the process moves to step 〓〓, where it is determined whether the vehicle has traveled a predetermined distance. The determination in this case is made by determining whether or not the count content of the pulse counter 90a read in step <<> has reached a predetermined value. When the vehicle has not traveled a predetermined distance, the process returns to step <<>. When the predetermined distance has been reached, the process moves to step <<> to reset the counter 90a and then returns to step.

Then, when the paving end switch is pressed, the process moves from step 〓〓 to step 〓〓 and ends the process.

Incidentally, in the program shown in FIG. 10, the processing in steps ~ shows a specific example of the carriage positioning means 106 in FIG. 9, and the processing in steps shows a specific example of the distance data storage means 107. Further, the processing of the step is a specific example of the carriage movement end determination means 108, the processing of the step is a specific example of the resurfacing mixture amount calculation means 109, and the processing of the step is a specific example of the carriage movement end determination means 108. A specific example of the material supply device driving means 110 is shown, and steps ≓ to ⓓ are specific examples of the vehicle mileage determining means 105, respectively.

Next, a second embodiment of the invention will be described with reference to FIG.

In this second embodiment, the amount of new composite material supplied by the new composite material supplying device 10 is maintained at a constant value, and the loosening mechanism 2
By adjusting the old composite material by loosening it by 6, the level of the resurfaced road surface can be maintained at the standard level.

That is, the total amount of composite material T (=W×D×L) required to maintain the reference level in the storage device 104 in advance
and the required amount of old composite material Uo (=T-U) based on the difference value between the total amount of composite material T and the amount of new composite material S.
04, and after calculating the additional material amount S in the step in FIG.
The difference value between the total amount of composite material T and the calculation result of the step is calculated to calculate the amount of old composite material U to be loosened. Next, proceeding to step b, the difference value ΔU between the old mixed material amount U calculated in step a and the required old mixed material amount Uo stored in the storage device 104 is calculated. Then, in step c, the hydraulic motor 4 of the loosening mechanism 26 is activated based on the difference value ΔU calculated in step b.
9 and 56 to adjust the old mixed material supply amount to an appropriate value, and then proceed to step.

In this way, according to the second embodiment, the road surface level after resurfacing can be adjusted to an accurate reference level by adjusting the amount of old composite material taken in while keeping the supply amount of new composite material constant. It can be done.

In addition, in this second embodiment, the distance detector 93 is not limited to calculating the amount of old mixed material U to be loosened by calculating the amount of additional mixed material S and then calculating the difference value from the total amount of mixed material T. The distance Xf to the bottom to be loosened by the ultrasonic wave transmitter 94 and the loosening mechanism 23 may be stored in advance in the storage device 104, and the old mixed material amount U may be calculated based on the following formula.

U=[{ _o 〓 ⁱ⁼¹ (Xf-Xi)}/n]×L×W...(2) Here, Xf is the difference between the ultrasonic transmitter 94 of the distance detector 93 and the loosening mechanism 26. This is the distance from the bottom when scraped.

Next, a third embodiment of the invention will be described with reference to FIG.

This third embodiment is for calculating the amount of new composite material to be added and the amount of old composite material to be removed, and automatically setting the supply ratio of old composite material and new composite material.

In other words, the processing from step to step is
The processing is similar to that shown in FIG. 10, and detailed explanation thereof will be omitted. However, in this embodiment, step d
Then, the amount S of additional mixed material and the amount U of old mixed material to be loosened are calculated, respectively. In this case, the additional mixed material amount T is
It is calculated using the above equation (1), and the old mixed material amount U is calculated using the above equation (2).

Next, the process moves to step e, where the mixing ratio S/U of the additional mixed material amount S and the old mixed material amount U is calculated, and then the process moves to step f.

In this step f, it is determined whether the mixture ratio S/U calculated in step e is a predetermined value,
If it is the predetermined value, the process moves to the step transition shown in FIG. Furthermore, if the mixing ratio S/U is different from the predetermined value, the process moves to step g and a control signal is output to the new composite material supplying device 10 and the loosening mechanism 26 to set the mixing ratio S/U to an appropriate value. Then move on to the step. In this case, the amount of old mixed material supplied to the scraping mechanism 26 is controlled by reversing the hydraulic motors 49 and 56 of the scraping mechanism 26 from the normal rotation state and adjusting the time of this reverse rotation. This is done by scraping a part of it out.

Therefore, according to this third embodiment, the old composite material and the new composite material can be spread evenly at a predetermined mixing ratio, and the quality of the composite material during resurfacing can be maintained uniformly. As a result, the durability of the resurfaced road surface can be improved.

In each of the above embodiments, the case where a scarifier was applied as the rotary loosening mechanism was explained, but this is not limited to this, and other rotary loosening mechanisms can be applied. It is only necessary to have a structure that can collect it inward or scrape it out to the outside.

Further, the road surface shape detection device 85 is not limited to the above embodiment, and the road surface shape detection device 85 is not limited to the above embodiment.
A slider that can move up and down and has an engagement roller at its lower end is installed, and this slider engages with the road surface and moves up and down along the road surface shape, and the displacement of the slider is measured by a differential transformer. , an electrical detection signal may be obtained by detecting with a displacement detector such as a detection coil,
Any other distance measuring device can be applied.

Furthermore, in each of the above embodiments, the road surface shape detection device 85 is activated to read the road surface shape when the road surface resurfacing device 1 travels a predetermined distance. It is also possible to operate the system to continuously read the road surface shape and take into account the traveling speed of the road resurfacing device 1 to perform more accurate road surface shape detection. Similarly, the shorter the sampling period of the distance detector 93, the more the road surface shape detection accuracy can be improved.

As explained above, according to the present invention, the old asphalt pavement material that forms the road surface is loosened by the scraping mechanism, and the new asphalt pavement material is layered together with or on top of the new asphalt pavement material. A road surface resurfacing device that resurfaces a road surface by leveling the road surface includes a road surface shape detection device that detects the cross-sectional shape of the road surface before being scraped, and a road surface shape detection device that detects the cross-sectional shape of the road surface before being scraped; a calculation means for calculating at least one of the intake amount of asphalt pavement material and the supply amount of new asphalt pavement material, and a device for taking in old asphalt pavement material and a supply device for new asphalt pavement material based on the calculation result of the calculation means. The configuration includes a control means for controlling at least one side. Therefore, by detecting the road surface shape with a road surface shape detection device, calculating the amount of additional composite material corresponding to the standard level based on the detected data, and adjusting at least one of the amount of old composite material and the amount of new composite material. Therefore, it is possible to accurately set the road surface level after resurfacing to the reference level, and it is possible to obtain the effect that optimal road surface resurfacing can be performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, FIGS. 2A and B are a plan view and a sectional view taken along the line B-B, and FIG.
FIG. 4 is a plan view showing an example of the loosening mechanism.
A side view thereof, FIG. 5 is a sectional view taken along the line V-V in FIG. 3, and FIG. 6 is a plan view showing an example of the stirring mechanism.
FIG. 7 is a front view showing an example of a cross-sectional shape detection device, FIG. 8 is a block diagram showing an example of a control device, FIG. 9 is a block diagram showing the configuration of a microcomputer, and FIG. Flow chart showing the processing procedure of the computer, Figures 11 and 12
The figures are flowcharts illustrating other embodiments of the invention. 1... road resurfacing device, 2... vehicle body, 10...
New composite material supply device, 11, 12... Chain conveyor, 26... Loosening mechanism, 27... Stirring mechanism, 80... Diffusion mechanism, 81... Leveling mechanism, 85... Road surface shape detection means, 92 ... Carriage, 93 ... Distance detector, 101 ... Microcomputer, 105 ... Vehicle mileage determining means, 106 ... Carriage positioning means, 107
. . . road surface distance data storage means, 108 .

Claims (1)

[Claims] 1. The old asphalt pavement material that forms the road surface is loosened by a scraping mechanism, and the new asphalt pavement material is layered and spread on top of the new asphalt pavement material, thereby regenerating the road surface. In road resurfacing equipment that performs paving,
a road surface shape detection device that detects the cross-sectional shape of the road surface before being scraped; and calculating at least one of the intake amount of the old asphalt pavement material and the supply amount of the new asphalt pavement material based on the detection signal of the road surface shape detection device. 1. A road resurfacing device, comprising: a calculation means for performing the calculation, and a control means for controlling at least one of an old asphalt pavement material intake device and a new asphalt pavement material supply device based on the calculation result of the calculation means.