JPH0253564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scarifier device for scraping a paved road surface in an asphalt pavement (repair) working vehicle such as a recycling heater.

Conventionally, in this type of scarifier device, a large number (several tens) of scraping bodies such as rigid bars are attached to the frame of a traveling vehicle, and while the vehicle is running, the road surface heated by the rigid bars is removed. I'm trying to stir it up.

By the way, the above-mentioned road surface is usually wavy due to ruts, etc., and in order to scrape up this wavy road surface evenly and evenly, the vertical position of the above-mentioned rigid bar is adjusted on the road surface. It is necessary to adjust it according to the shape in the width direction.

For this purpose, in the past, a long hole was provided in each of the dozens of rigid bars, and the position was adjusted by moving each of these rigid bars up and down one by one, and the adjusted position was adjusted using bolts or nuts. There is a known method in which the rigid bar is fixed to the rigid bar, or a method in which vertical adjustment is performed by drilling a plurality of holes in each rigid bar and inserting a pin into one of these holes.

However, in the case of the vertical adjustment mechanism configured as described above, the positions of the many rigid bars must be adjusted individually, so it takes a lot of effort and time to complete the vertical adjustment of all the rigid bars. The problem is that the workability is extremely poor, and the road surface being repaired is heated as described above and reaches a high temperature (approximately 180℃).
℃), there is a problem in that it is undesirable from a safety standpoint to perform the above-mentioned long adjustment work during the raking work.

The present invention has been made in view of the above circumstances, and its purpose is to provide a scarifier device for an asphalt paving vehicle that allows for easy vertical adjustment of a scraping body even during scraping work. There is a particular thing.

In order to achieve the above object, the present invention provides a scraping mechanism having a plurality of scraping bodies formed of a plurality of rigid bars in a frame attached to a traveling vehicle, the scraping mechanism having a plurality of scraping bodies formed of a plurality of rigid bars. A plurality of scraping mechanisms are provided, and are attached to the frame so as to be movable in the vertical direction, and an elevating mechanism is provided on the top of the frame to adjust vertical movement of the scraping mechanism for each scraping mechanism. It is characterized by the fact that

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 11.

In the figure, reference numeral 1 indicates a running vehicle of the recycle heater A, and this running vehicle 1 runs by rotating wheels W by a drive device (not shown). A front mount frame 2 is connected to the front side of the running vehicle 1 so as to be rotatable in a horizontal plane from side to side, and a rear mount frame 2 is connected to the rear side of the running vehicle 1 via a reinforcing member 1a. 3 are connected to each other so as to be rotatable in a horizontal plane from side to side. A front slide arm 4 and a rear slide arm 5 are inserted into each mount frame 2, 3 so as to be vertically movable, and support plates 4a of each mount frame 2, 3 and each slide arm 4, 5 are inserted. , 5a, each slide arm 4, 5 is adapted to be raised and lowered along each gantry frame 2, 3 by lifting devices 6, 7 such as hydraulic cylinders, which are respectively installed between the slide arms 4, 5. Further, a front heater unit 8 for heating the road surface is attached to each support plate 4a, 5a by hinge connection.
and a rear heater unit 9 are supported so that they can be raised and lowered along the longitudinal direction of the vehicle 1, and these heater units 8 and 9 are rotated up and down by winches and wires 10 and 11 (not shown). It's starting to move. Further, below the center of the traveling vehicle 1, a central heater unit 13 is supported by four hydraulic cylinders 12 so as to be movable up and down. Each of the heater units 8, 9, and 13 is composed of a fixed heater _H1 and a pair of movable heaters _H2 provided on both sides of the fixed heater _H1 , and is operated by a cylinder device (not shown). The heating width is adjusted by moving the left and right movable heaters _H2 left and right with respect to the fixed heater _H1 .

A stopper 16 is fixed by a bolt 15 to the tip of the support shaft 14 that protrudes from both rear sides of the vehicle 1 in the left-right direction, and a stopper 16 is fixed to the tip of the support shaft 14 by a bolt 15, and a stopper 16 is fixed at an appropriate interval to the inside of the stopper 16 of the support shaft 14. Each of the support shafts 14 between the two spacing support plates 17 and 18
A pivot ring 19 is attached to each pivot ring 19, and a leveling arm (support arm) 20, each having a U-shaped cross section, is attached to each pivot ring 19.
21 is provided so that it can be freely rotated in the vertical direction and slightly moved up and down by fitting rectangular elongated holes 20a and 21a with large vertical hole dimensions bored at the base end thereof. ing. The connection portion of each leveling arm 20, 21 with each of the support shafts 14 is formed by chamfering the four corners of a rectangular flat plate having an elongated hole of the same shape and size as the elongated holes 20a, 21a, respectively. The reinforcing plate 22 is fixed, and the thickness of the connecting portion of the leveling arms 20, 21 to which each reinforcing plate 22 is fixed is set smaller than the distance between the stopper 16 and the spacing support plates 17, 18, Thereby, each of the leveling arms 20, 21 is inclined in a plane perpendicular to the length direction thereof.

At the tip of each leveling arm 20, 21,
Scarifier device body B that scrapes the paved road surface
The fixed scarifier ear 23 is fixed via rectangular pieces 24a of a mounting member 24 provided upwardly projecting from both sides thereof. These mounting members 24 include a pair of triangular pieces 24d fixed to both ends of a rectangular piece 24a, and a pair of triangular pieces 24d.
A connecting piece 24d is fixed to the center portion between b and 24c, and each connecting piece 24d has a pin 25a at the lower end of the pair of left and right lower connecting members 25.
are connected via. Further, the lower end portions of the chains 26 are respectively coupled to the pins 25b at the upper end portions of each lower connecting member 25, and the upper end portions of each chain 26 are connected to each other.
They are respectively locked to pins 27a at the lower ends of a pair of left and right upper connecting members 27. The upper end of each upper connecting member 27 is connected via a pin 27b to the tip of a piston rod 29a of a hydraulic cylinder 29 pin-coupled to each fixing member 28 fixed to both sides of the rear end of the traveling vehicle 1. ing.

Furthermore, hook portions 20b and 21b are formed at the upper portions of the other ends of the leveling arms 20 and 21, respectively, and support members 30 are respectively installed on the outside of the hydraulic cylinders 29 on both sides of the rear end of the traveling vehicle 1. When the scarifier device is stored, each of the hook portions 20 is
b, 21b. The hanging fitting 31 has a fitting main body 3 formed in an inverted U shape.
A rod-shaped piece 31b is welded to the lower end of 1a.

A pivot arm 33,
34 are hinged so as to be rotatable in the left and right directions in a horizontal plane, and these rotating arms 33,
Movable scarifiers (units) 36 and 37 are rotatably hinged to the free ends (rear ends) of 34 via pins 35 at their front outer edges.

Further, a support arm 40 having one end fixed to the upper right front end of the fixed frame 38 of the fixed scarifier 23 and a fixed plate 39 fixed horizontally to the upper inner surface of the solid frame 38 is provided with a pin 41. , the base end of a hydraulic cylinder 42 that moves the left movable scarifier 36 is connected.
A piston rod 42a of this hydraulic cylinder 42 is arranged horizontally facing left, and a mounting member 44 connected to the tip of the piston rod 42a by a pin 43 is attached to the left side of the rear end surface 38a of the fixed frame 38. A slider 48 is fitted into a guide groove 38b formed by a pair of upper and lower guide members 46 and 47 attached to the left side with bolts 45 so as to be movable in the left-right direction, and a pair of upper and lower coupling plates 49, 50. The left side of the slider 48 and the front inner edge of the left movable scarifier ear 36 are rotatably hinged together by a pin 51.

Further, a support member 53 fixed to the upper left rear end of the fixed frame 38 of the fixed scarifier 23 and a fixed plate 39 fixed horizontally to the upper inner surface of the fixed frame 38 is provided with a pin 54. A base end portion of a hydraulic cylinder 55 that moves the movable scarifier ear 37 on the right side is connected. The hydraulic cylinder 55 is arranged horizontally toward the right, and its piston rod 55a extends below the support arm 40, and the tip of the piston rod 55a is connected to a pin. A hanging piece 57c is connected to the pair of upper vertical pieces 57a of the mounting member 57 by 56, and extends downward from the rear end of the horizontal piece 57b to which these upper vertical pieces 57a are fixed. a pair of upper and lower guide members 59 attached to the right side of the rear end surface 38a of 38 and the right side with bolts 58;
A slider 61 is fitted into a guide groove 38c formed by a slider 60 so as to be movable in the left-right direction, and is connected to the slider 61 via a pair of upper and lower coupling plates 62 and 63. The right side of the slider 61 and the front inner edge of the right movable scarifier ear 37 are connected to the pin 64.
It is hinged so that it can rotate freely.

A hydraulic cylinder 55 is arranged horizontally above the left side of the rear end of the fixed scarifier ear 23.
By extending the respective piston rods 55a, 42a of the hydraulic cylinder 42, which are horizontally arranged diagonally above and behind this hydraulic cylinder 55, the right and left rotating arms 34, 33 are rotated around each pin 32, respectively. In the figure, while rotating counterclockwise and clockwise, the front inner edges of the right and left movable scarifier ears 37, 36 move to the right along respective guide members (59, 60), (46, 47). The movable scarifiers 37 and 36 are moved to the left and the movable scarifiers 37 and 36 are deployed to the right and left from their storage position where they are superimposed on the rear of the fixed scarifier 23.

The fixed scarifier 23 includes partition plates 65, 66 provided on the left side, center, and right side, respectively.
67 partitions the inside of the fixed frame 38 into four spaces, and a pair of first scraping mechanisms 68,
68 are installed in the two inner spaces, and a pair of second scraping mechanisms 69, 69 are installed in the two outer spaces, and each of the movable scarifiers 36, 37 is separated by a partition plate 70. The interior of the movable frame 71 is divided into two spaces, with the third scraping mechanism 72 located in the outer space and the fourth scraping mechanism 72 located in the outer space.
A scraping mechanism 73 is installed in each inner space.

The first to fourth scraping mechanisms 68, 69, 7
2 and 73 have 9, 8, 7, and 6 rigid bars (raking bodies) 74, respectively, whose upper portions are supported by a pair of upper and lower mounting plates 75, 76, and are arranged in two rows in a staggered manner. A support 77 having a T-shaped cross section is fixed between the mounting plates 75 and 76 on both sides of the mounting plates 75 and 76, and each of the above-mentioned frames is attached to the three ends of each support 77. A sliding plate 78 for moving up and down within the frames 38, 71 is attached with a slight gap formed between the inner surfaces of the frames 38, 71.

Furthermore, the first to fourth scraping mechanisms 68,
Each lower mounting plate 76 of 69, 72, 73,
The vertical movement of the first to fourth scraping mechanisms 68, 69, 72, 73 is adjusted between the fixing plates 79, 39 fixedly installed in the upper part of each of the frames 38, 71. Each of these lifting adjustment mechanisms 80 is provided with an adjustment bolt 81 whose threadless portion 81a is rotated by a collar 82, thrust bearings 83, 84, and a screw stopper 85 to the fixing plates 79, 39. It is movably mounted, and its threaded portion 81b is inserted into the holes 75a, 76a of each of the mounting plates 75, 76, and both ends are rotated to a pair of L-shaped brackets 87 mounted on the lower mounting plate 76. The indicator rod 52 is screwed into the freely supported yoke 86, and is screwed and fixed onto each of the upper mounting plates 75, and is provided so as to penetrate through each of the fixing plates 79, 39. It is.

Blade devices 88 and 89 are installed at the rear of each of the movable scarifiers 36 and 37, respectively. These blade devices 88, 89 are
Each of the gate sliding plates 90 has both sides 90a,
90c is guided and supported by a pair of L-shaped guide members 91 attached to the rear end surface 71a of the movable frame 71, and its center portion 90b is connected to a slide guide 92 attached to the center of the rear end surface 71a and the rear end surface. 7
1a, and the outer portion 90a of each gate sliding plate 90,
Three types of support plates 94, 95, 96 with different widths, small, medium, and large, are attached to a mounting plate 93 fixed to the central part 90b and the inner part 90c, respectively, to a rotating pin 97 and a shear pin 98 located above and below. Therefore, each support plate 94, 9 is provided so as to rotate upward when a load above a certain level is applied.
At the bottom of 5,96, there is a doglegged gate 99,100
are provided with their long pieces 99a, 100a fixed, while a gate adjustment bolt 103 attached to the support member 101 at the rear of the upper end of each of the movable frames 71 with a double nut 102 is screwed into its tip. The gate sliding plate 90 is connected to a fixing member 105 of each of the gate sliding plates 90 by a nut 104. Note that 106 is a wire tied to both ends of the shear pin 98 to prevent the cut shear pin 98 from falling off when the shear pin 98 is cut.

Next, the operation of the scarifier device in the asphalt paving vehicle constructed as described above will be explained.

When repairing asphalt pavement, each heater unit 8, 9 is brought horizontally and close to the road surface using a winch (not shown) and each lifting device 6, 7, and the heater unit 8, 9 is brought close to the road surface using a hydraulic cylinder 12. The heater unit 13 is brought closer to the road surface, and the left and right movable heaters H2 of each heater unit 8, 9, and ₁₃ are moved in the left-right direction relative to the fixed heater _H1 by a cylinder device (not shown) to increase the heating width. Adjust.

Also, by extending the piston rods 42a, 55a of each of the hydraulic cylinders 42, 55,
Each slider 48,
61, each guide member (46, 47), (59, 6
0), and the front inner edges of the left and right movable scarifiers 36, 37 are moved leftward and rightward along the fixed frame 38 of the fixed scarifier 23, each movable scarifier 3
The front outer edges of 6 and 37 are the left and right rotating arms 33,
While being supported by the rotating arms 33, 34,
The movable scarifier ears 36, 37 are rotated clockwise and counterclockwise in FIG.
is deployed outwardly to the left and right in accordance with the heating width, with the outer side inclined diagonally forward with respect to the fixed scarifier ear 23.

Furthermore, the fixed plate 3 of the fixed scarifier 23 and each movable scarifier 36, 37 is provided.
By rotating each adjustment bolt 81 attached to each frame 38, 79 and adjusting the distance between each fixing plate 39, 79 and the lower mounting plate 76, the first ~By raising and lowering the fourth scraping mechanisms 68, 69, 72, and 73, respectively, and by expanding and contracting the piston rods 29a, 29a of the left and right hydraulic cylinders 29, 29, the scarifier device main body B is moved to the support shaft 14.
Rotate up and down around the center to adjust the scraping depth.

Next, by heating each of the heater units 8, 9, and 13, the paved road surface to be repaired is heated, and the traveling vehicle 1 is moved forward at low speed, and the fixed scarifier 23 and each movable scarifier 36,
37's rigid bar 74 starts scraping up the paved road surface.

At this time, if the paved road surface is sufficiently heated by the front heater unit 8 and the center heater unit 13 and has softened to a depth equal to or greater than the scraping depth, hydraulic pressure is applied to the rear end of the vehicle 1. A scarifier device main body B suspended by a cylinder 29 and a chain 26 scrapes up the paved road surface to a predetermined scraping depth without sinking more than necessary. In addition, if the paved road surface is not completely softened to the predetermined scraping depth due to insufficient heating, etc., the scarifier device main body B rotates around the support shaft 14 in a hard part of the paved road surface. Since it floats, it scrapes up only the softened parts of the paved road surface, without forcibly scraping up the hard parts of the paved road surface, and does not crush the aggregates in those parts.

Furthermore, the paving material scraped up by each of the movable scarifiers 36, 37 is removed by the long pieces 9 of the gates 99, 100 of a pair of blade devices 88, 89 disposed behind each of the movable scarifiers 36, 37.
9a and 100a, it is collected in the center,
It is supplied to the depression (rut) in the center.

In this way, the paved road surface is scraped up by the fixed scarifier 23 and the movable scarifiers 36 and 37, and is scraped to the center by the blade devices 88 and 89, resulting in a uniformly leveled paved road surface. The paving material is further heated by the rear heater unit 9 to raise the average temperature of the scraped paving material, and then scraped up and leveled by a subsequent repaver, remixer, drive roller, etc., and then reused. paved.

In addition, if it becomes necessary to adjust the raking depth due to changes in the depth of the rutted area during pavement repair work, perform each adjustment in the same way as the adjustment operation before work described above. By rotating the adjustment bolt 81 of the elevation adjustment mechanism 80 while checking the position of the support rod 52,
First to fourth scraping mechanisms 68, 69, 72, 7
3 as appropriate, and by expanding and contracting the piston rods 29a of the left and right hydraulic cylinders 29, the scarifier device main body B can be rotated up and down about the support shaft 14.
without getting close to the high temperature (approximately 180℃) paved road surface.
The scraping depth adjustment operation is completed easily and safely.

At this time, even if a rearward force is applied to the tip of the rigid bar 74 and a force is applied to the lower mounting plate 76 supporting the rigid bar 74 to tilt the mounting plate 76 in the front-rear direction, the above-mentioned The yoke 86 is attached to the bracket 87 on the lower mounting plate 76.
Since the yoke 86 is rotatably supported, the yoke 86 is
rotates. Therefore, since no bending force is applied to the adjustment bolt 81 screwed into the yoke 86, the adjustment bolt 81 can be rotated smoothly.

As described above, the present invention includes a scraping mechanism having a plurality of scraping bodies each formed of a plurality of rigid bars within a frame attached to a traveling vehicle. At the same time, it is attached to the frame so as to be movable in the vertical direction, and an elevating mechanism is provided on the upper part of the frame to adjust the movement of the scraping mechanism in the vertical direction for each scraping mechanism. By raising and lowering each scraping mechanism using the lifting mechanism, the scraping body consisting of a large number of rigid bars can be moved up and down at once, and as a result, the scraping body The position can be adjusted quickly and easily, and the lifting mechanism is located above the scraping mechanism to be as far away from the road surface as possible.
This makes it possible to perform the adjustment work at a location away from the high-temperature road surface, and has excellent effects such as ensuring work safety.

[Brief explanation of the drawing]

1 to 11 show an embodiment of the present invention, in which FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a view taken along the - line in FIG. 2, and FIG. 5 is a side view of an asphalt pavement work vehicle equipped with the scarifier device of the present invention, FIG. 5 is a side view of the connecting portion between the leveling arm and the support shaft, and FIG. 6 is a sectional view taken along the line - in FIG. 5. Figure 7 is the − of Figure 5.
8 is a sectional view taken along the - line in FIG. 3, FIG. 9 is a sectional view taken along the - line in FIG. 3, and FIG. 10 is a sectional view of the elevation adjustment mechanism 80.
FIG. 1 is a view taken along the - line in FIG. 2. 38... fixed frame body, 68... first scraping mechanism, 69... second scraping mechanism, 71... movable frame body, 72... third scraping mechanism, 73... fourth scraping mechanism, 74... Rigid bar (raking body), 80... Lifting adjustment mechanism, A... Recycling heater.

Claims (1)

[Claims] 1. A plurality of scraping mechanisms each having a plurality of scraping bodies each formed of a plurality of rigid bars are disposed in a frame body attached to a traveling vehicle along substantially the width direction of the traveling vehicle, and the above-mentioned frame body for asphalt pavement, characterized in that an elevating mechanism is provided on the upper part of the frame body to adjust the vertical movement of the raking mechanism for each raking mechanism. Scarifier device on work vehicle.