JPH0253565B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blade device for scraping up a paved road surface or scraping up scraped paving material in an asphalt pavement (repair) working vehicle such as a recycling heater. Conventionally, in road surface regeneration work for asphalt-paved roads, when the heated pavement surface is scraped up by a scarifier device, the rutted portions of the paved road surface are removed in order to flatten the scraped-up pavement surface and make it easier to resurface. Sending paving material scraped up from the side of the road to the (concavity),
So-called raking work is being carried out.

By the way, a motor grader is mainly used for the above-mentioned raking work, but when raking is performed by the motor grader, the motor grader forcibly cuts and scrapes up the poorly heated portion of the paved road surface, causing There is the issue of reducing the strength of the regenerated pavement surface by crushing the aggregate, and the delicate adjustment control of scraping up excess paving material into the ruts while leaving a predetermined amount of scraped up paving material on the side of the road. I'm dissatisfied with not being able to do it.

The present invention has been made in view of the above circumstances, and its purpose is to scrape the excess paving material into the rutted area in the center while leaving a predetermined amount of the scraped up paving material on the side of the road. Not only can the scraped paved road surface be leveled, but also the poorly heated portion of the paved road surface is not forcibly scraped up, and the aggregate in the poorly heated portion is not crushed. An object of the present invention is to provide a blade device for an asphalt pavement work vehicle.

In order to achieve the above object, the present invention provides a gate for collecting scraped paving material on a traveling vehicle, which can be vertically raised and lowered by a position adjustment mechanism.
In addition, by configuring the gate so that it can be rotated by the rotation adjustment mechanism when the load applied to the gate reaches a predetermined value, it is possible to adjust the amount of scraping or scraping while also preventing poor heating of the paved road surface. When a load greater than the set load is applied to the gate, the gate is rotated to prevent damage to the gate.

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 solid 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 are 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. A lifting adjustment mechanism 80 is installed respectively. These elevation adjustment mechanisms 80 have an adjustment bolt 81 whose threadless portion 81a is rotatably attached to the fixing plates 79, 39 by a collar 82, thrust bearings 83, 84, and a screw stopper 85, and whose threaded portion 81b is rotatably attached to the fixing plates 79, 39. , through the holes 75a, 76a of the respective mounting plates 75, 76, and screwed into a yoke 86 rotatably supported at both ends by a pair of L-shaped brackets 87 mounted on the lower mounting plate 76. On the other hand, an indicator rod 52 screwed and fixed onto each of the upper mounting plates 75 is provided so as to pass through each of the fixed plates 79, 39.

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, and 96 with different widths, small, medium, and large, are attached to the mounting plate 93 fixed to the central part 90b and the inner part 90c, and are attached to a rotating pin 97 and a shear pin (rotating pin) located above and below, respectively. The support plates 94, 95, 96 are provided with doglegged gates 99, 100 at the bottom of each support plate 94, 95, 96 so as to rotate upward when a load above a certain level is applied. 99a and 100a are fixed, and a gate adjustment bolt 103 is attached to a support member 101 at the rear of the upper end of each movable frame 71 with a double nut 102. Fixing member 1
05 by welding. In addition, 1
06 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 blade 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,
The left and right movable scarifier ears 36, 37 are expanded to the left and right according to the heating width, and the fixed scarifier ear 23 and each movable scarifier ear 36,
By rotating each adjustment bolt 81 attached to the fixing plate 39, 79 of 37 and adjusting the distance between the fixing plate 39, 79 and the lower mounting plate 76, the inner surface of each frame 38, 71 can be adjusted. , first to fourth scraping mechanisms 68, 69, 7
2, 73 respectively, and the piston rods 29a, 29 of the left and right hydraulic cylinders 29, 29.
By expanding and contracting a, the scarifier device main body B is rotated up and down about the support shaft 14 to adjust the raking depth.

Further, by rotating each gate adjustment bolt 103, the fixing member 105 of each blade device 88, 89
By adjusting the distance between the support member 101 fixed to the movable frame 71, each gate sliding plate 90
is moved up and down along the left and right L-shaped guide members 91, 91 and the slide guide 92. As a result, each gate 99, 100 attached to each gate sliding plate 90 via the mounting plate 93 and support plates 94, 95, 96 moves up and down, and the paving material is scraped up by each movable scarifier 36, 37. The supply amount (raking amount) to the central part of the water is adjusted.

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.

Subsequently, the paved road surface scraped by each movable scarifier 36, 37 is further scraped by gates 99, 100 of a pair of blade devices 88, 89 disposed behind each movable scarifier 36, 37. In addition, the paving material is guided along the long pieces 99a and 100a of each gate 99 and 100, and while leaving the paving material at a predetermined height on the paved road surface, the excess paving material is collected in the center of the road surface, and the ruts in the center are removed. supplied to the department.

At this time, in the unlikely event that a hard pavement portion that has not been softened is exposed to the gates 99, 100 of the blade devices 88, 89,
If the gates 99, 100 are in contact with each other and a large load exceeding a predetermined value is applied to each gate 99, 100, the shear pin 98 connecting the mounting plate 93 of each blade device 88, 89 and the support plate 94, 95, 96
The gates 99 and 100 rotate upward about the rotation pin 97. Therefore, each blade device 88, 89 itself is not damaged, and the hard part of the paved road surface is not forcibly scraped up.

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 each blade device 88, 89 of the present invention, by removing the gate adjustment bolt 103 from the nut 104, the gate sliding plate 90 can be moved vertically along each L-shaped guide member 91 and slide guide 92. In this case, each gate 99, 100 may be moved upward when the paved road surface is hard. Further, in this embodiment, when a load of a certain level or more is applied to each gate 99, 100,
Each shear pin 98 cuts and each gate 99,1
00 rotates upward around each rotation pin 97, but as shown in FIG.
By attaching a spring (rotation adjustment means) 110 between the gates 99 and 100, each gate 99, 100 may be rotated in the vertical direction about each rotation pin 97 depending on the load.

As explained above, the present invention provides a driving vehicle with
In a blade device for an asphalt paving work vehicle that is provided with a gate for scraping up paving material, the traveling vehicle is provided with a gate sliding plate that is slidable in the vertical direction, and the gate sliding plate and the traveling vehicle are provided with a gate sliding plate that can be slid vertically. A position adjustment mechanism for adjusting the position of the gate sliding plate in the vertical direction is provided between the gate sliding plate and the gate sliding plate, and
The gate is rotatably connected to the gate sliding plate, and the gate is allowed to rotate when the load applied to the gate reaches a predetermined value between the gate sliding plate and the gate. It is characterized by being equipped with a rotation adjustment means, and by moving the gate up and down, the amount of scraping can be adjusted, leaving a predetermined amount of the scraped paving material on the side of the road. , excess paving material can be collected in the center, and the scraped paved road surface can be leveled. Furthermore, since the gate can be rotated up and down by the rotation adjustment means in the poorly heated portion of the paved road surface, the poorly heated portion of the paved road surface is not forcibly scraped up. Therefore, the aggregate in the malheated area is not crushed, the strength, durability, and other characteristics of the regenerated pavement surface are not deteriorated, and unreasonable force is not applied to the blade device. It has excellent effects such as being able to prevent damage to the equipment due to

[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.
1 is a view taken along the - line in FIG. 2, and FIG. 12 is a side view showing another embodiment of the present invention. 1... Traveling vehicle, 88, 89... Blade device, 98... Shear pin (rotation adjustment means), 99,
100...gate, 110...spring (rotation adjustment means), A...recycle heater.

Claims (1)

[Claims] 1. In a blade device for an asphalt paving vehicle in which a traveling vehicle is provided with a gate for scraping up paving material, the traveling vehicle is provided with a gate sliding plate that is slidable in the vertical direction,
A position adjustment mechanism is provided between the gate sliding plate and the traveling vehicle to adjust the position of the gate sliding plate in the vertical direction, and the gate is rotatably connected to the gate sliding plate. , an asphalt pavement characterized in that a rotation adjustment means is provided between the gate sliding plate and the gate to allow rotation of the gate when the load applied to the gate reaches a predetermined value. Blade device on a work vehicle.