JPH0380924B2 - - 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.

Generally, in asphalt pavement resurfacing work, when the heated pavement surface is scraped up using a scarifier device, there are cases where the heating conditions are different between the center and the sides of the pavement surface, or when the pavement surface is heated towards the sides of the road. In cases where it is necessary to incline, it is desirable to incline the required scraping surface according to the inclination, but to do this, the scarifier device must be tilted at different heights on the left and right sides of the scarifier device. Must be.

However, conventional scarifier devices
Since the scarifier device is attached to the tip of a support arm that is rotatably provided in the vertical direction on the traveling vehicle, the scarifier device cannot be tilted in its longitudinal direction, and the necessary raking surface with a predetermined slope cannot be obtained. The problem is that there is no.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to enable the main body of the scarfing ear device to be inclined in its longitudinal direction, and to obtain a desired inclined raking surface for use in asphalt pavement. An object of the present invention is to provide a scarifier device for a work vehicle.

The present invention has been made to achieve the above-mentioned objects, and consists of a pair of support arms each having a scarifier device main body attached to their tips, supported by arm support parts provided on both sides of a traveling vehicle. A support shaft protruding from either the base end of the support arm or the arm support portion is passed through a support hole provided in the other, so that each of the support arms is rotatably supported by the traveling vehicle. The arm support portion is provided with a widthwise regulating member for regulating the movement of the support arm to both sides in the width direction, and the support hole has an elongated hole shape to allow vertical movement of each support arm. In addition, the interval between the width direction regulating members is set to be larger than the thickness of the corresponding part of each of the support arms, and there is a member between the traveling vehicle and each of the support arms that is actuated by an actuator. The present invention is characterized in that a position adjustment mechanism is provided for moving the scarifier device main body up and down or tilting it in the width direction of the traveling vehicle by individually moving the tips of the support arms up and down.

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 as to be able to rise and fall freely along the longitudinal direction of the traveling vehicle 1, and these heater units 8, 9 can be rotated up and down by winches and wires 10, 11 (not shown). I'm starting to do that. 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 (arm support part) 14 that protrudes from both rear sides of the traveling vehicle 1 in the left-right direction, and a stopper 16 is provided at an appropriate interval between the inner sides of the stopper 16 of the support shaft 14. A pivot ring 19 is mounted around each support shaft 14 between two spacing support plates 17 and 18 fixed to each other.
are installed, and each pivot ring 1
9, leveling arms (support arms) 20 and 21 each having a U-shaped cross section are fitted with rectangular elongated holes (support holes) 20a and 21a having large vertical hole dimensions drilled at their base ends. It is provided so that it can be freely rotated in the vertical direction and can be moved slightly up and down. The stopper 16 and the spacing support plate 18 constitute a width direction regulating member that regulates movement of the support arms 20, 21 in the width direction. and,
Each of the above support shafts 1 of each leveling arm 20, 21
4 are connected to the elongated holes 20a and 21, respectively.
A reinforcing plate 22 formed by chamfering the four corners of a rectangular flat plate having an elongated hole of the same shape and size as a is fixed, and the thickness of the connecting part of the leveling arms 20 and 21 to which each reinforcing plate 22 is fixed. The distance between the stopper 16 and the spacing support plates 17 and 18 is set to be smaller than the spacing between the stopper 16 and the spacing support plates 17 and 18, so that the leveling arms 20 and 21 are inclined in a plane perpendicular to the length direction thereof. ing.

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 are configured such that a pair of triangular pieces 24b, 24c are fixed to both ends of a rectangular piece 24a, and a connecting piece 24d is fixed to the center between the triangular pieces 24b, 24c. Lower end portions of a pair of left and right lower connecting members 25 are connected to each of the connecting pieces 24d via pins 25a. Further, the lower ends of the chains 26 are connected to the pins 25b at the upper ends of each lower connecting member 25, and the upper ends of each chain 26 are connected to the pins 27a at the lower ends of the pair of left and right upper connecting members 27, respectively. It is locked. The upper end of each upper connecting member 27 is connected to a piston rod 29a of a hydraulic cylinder (position adjustment mechanism) 29 pinned to each fixing member 28 fixed to both sides of the rear end of the traveling vehicle 1 via a pin 27b. is connected to the tip of the

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 is hinged to be rotatable to the left in a horizontal plane, and these rotating arms 33, 3
Movable scarifiers (units) 36 and 37 are rotatably hinged to the free ends (rear ends) of 4 through pins 35 at their front outer edges.

Further, a support arm 40, which has one end fixed to the upper right front end of the fixed frame 38 of the fixed scarifier 23 and a fixed plate 39 horizontally fixed to the upper inner surface of the fixed frame 38, is attached to the left side by a pin 41. The base end of a hydraulic cylinder 42 that moves the movable scarifier ear 36 is connected. The piston rod 4 of this hydraulic cylinder 42
A mounting member 44 is connected to the tip of the piston rod 42a with a pin 43, and a bolt 45 is attached to the left side of the rear end surface 38a of the fixed frame 38 and to the left side of the mounting member 44. A slider 48 that is movable in the left-right direction and is fitted into the guide groove 38b formed by the pair of upper and lower guide members 46 and 47 attached to the upper and lower pair of coupling plates 4
9 and 50. The left side of this slider 48 and the left movable scarifier 3
6 is rotatably hinged to the inner edge of the front end 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,
The piston rod 55a extends below the support arm 40, and the tip of the piston rod 55a is
A hanging piece 57c is connected to a pair of upper vertical pieces 57a of the mounting member 57 by a pin 56, and extends downward from the rear end of the horizontal piece 57b to which these upper vertical pieces 57a are fixed. body 38
A bolt 58 is attached to the right side of the rear end surface 38a and the right side.
A pair of upper and lower guide members 59, 60 attached by
A slider 61 is fitted into a guide groove 38c formed by the slider 61 so as to be movable in the left-right direction, and is connected 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 rotatably hinged together by a pin 64.

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 and left along respective guide members 59, 60, 46, 47, respectively. As the movable scarifiers 37 and 36 move, they 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 two inner spaces, and a pair of second scraping mechanisms 69, 69 are installed in two outer spaces, respectively, and the movable scarifiers 36, 37 are movable by partition plates 70, respectively. The inside of the frame body 71 is divided into two spaces, and a third space is divided into two spaces.
The scraping mechanism 72 is installed in the outer space, and the fourth scraping mechanism 73 is installed in the 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.

The rear portions of the movable scarifiers 36, 37 are equipped with blade devices 88, 89, respectively. These blade devices 88, 89 have gate sliding plates 90 on 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 body 71, and its central portion 90b is connected to a slide guide 92 attached to the center of the rear end surface 71a and the rear end surface 71a. The mounting plate 93 is fitted into the space formed by the gate sliding plate 90 and is fixed to the outer part 90a, the center part 90b and the inner part 90c of each gate sliding plate 90. Three types of support plates 94, 95, and 96 are provided so as to rotate upward when a certain load or more is applied by a rotation pin 97 and a shear pin 98 located above and below, respectively, and each support plate 94 ,95,
96, doglegged gates 99, 100 are provided with their long pieces 99a, 100a fixed, and are attached to a support member 101 at the rear of the upper end of each movable frame 71 with double nuts 102. The gate adjustment bolt 103 is connected to each gate sliding plate 90 by a nut 104 screwed into its tip.
It is configured to be connected to a fixed frame body 105 of.
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 winches and lifting devices 6, 7 (not shown), and the central part is moved using a hydraulic cylinder 12. The heater unit 13 is brought close to the road surface, and the left and right movable heaters H2 of each heater unit 8, 9, and ₁₃ are moved to the left with respect 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,
37 fixing plates 39, 79 are rotated, each fixing plate 3
9, 79 and the lower mounting plate 76, the first to fourth scraping mechanisms 68, 69, 7 can be moved along the inner surface of each frame 38, 71.
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.

At this time, if it is necessary to incline the scraping surface, the lengths of the piston rods 29a, 29a of the left and right hydraulic cylinders 29, 29 may be made different. That is, the left and right piston rods 29a,
By changing the length of 29a, the elongated holes 20a, 2 formed at the base ends of the left and right leveling arms 20, 21
1a is fitted into pivot rings 19, 19 around left and right support shafts 14, 14, and has leveling arms 20, 2 to which respective reinforcing plates 22, 22 are fixed.
The thickness of the connection portion between the support shafts 14 and 14 of 1 is set smaller than the distance between each stopper 16 and the spacing support plates 17 and 18, and the leveling arm 20,
21 and the stopper 16 and support plate 18 are spaced apart in the axial direction of the support shaft 14.
Each of the leveling arms 20 and 21 is tilted smoothly from side to side in a plane perpendicular to its length direction, and the fixed scarifier 23 and each movable scarifier 3
6 and 37 are inclined to the left and right with respect to the traveling vehicle 1, thereby setting a scraping surface with a desired inclination angle.

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 body B suspended by a cylinder 29 and a chain 26 scrapes up the paved road surface to a predetermined scraping depth without sinking unnecessarily. 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 the dark 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, it is scraped up by the fixed scarifier ear 23 and each movable scarifier ear 36, 37, and is scraped in the center by each blade device 88, 89 to a predetermined inclined or horizontal scraping surface. The paved road surface scraped into a uniform plane is further heated by the rear heater unit 9 to raise the average temperature of the scraped pavement.
Alternatively, it is scraped up and leveled using a remixer, drive roller, etc., and then resurfaced.

Furthermore, when the recycle heater A is to be transported after the paved road surface reclamation work is completed, first the left and right movable heaters _H2 of each heater unit 8, 9, 13 are connected to the fixed heater by the cylinder device.
The heater units 8 and 9 are moved to the _H1 side and stored, and each heater unit 8 and 9 is rotated upward and erected by a winch (not shown) and each lifting device 6 and 7, and the central part is Heater unit 1
Pick up 3.

Next, the piston rods 42a, 55a of each hydraulic cylinder 42, 55 are retracted to cause each movable scarifier 36, 37 to overlap behind the fixed scarifier 23 in the storage position, and the piston rod 29a of each hydraulic cylinder 29 is retracted. The scarifier device main body B is rotated upward around the support shaft 14, and the hook portions 20b, 21b at the top of each leveling arm 20, 21 are locked to the pair of left and right hanging fittings 31, and the scarifier device main body B is rotated upward. It is sufficient to stop the recycle heater A at its storage position and transport the recycle heater A.

In this embodiment, the leveling arms 20 and 21 are provided on the support shaft 14 protruding from both sides of the vehicle 1, but as shown in FIG. 110
is supported by a single point support point 110a so as to be able to rotate vertically in a vertical plane including its axis, and leveling arms 111, 1 are attached to both ends of this support shaft 110 via spherical bushings 113.
12 so as to be freely rotatable upwards about the axis of the support shaft 110, the scarifier device main body B attached to the tip of each leveling arm 111, 112 can be tilted in its longitudinal direction. good.

As explained above, the present invention provides a driving vehicle with
A pair of support arms each having a scarifier device main body attached to their tips are supported by arm support parts provided on both sides of the traveling vehicle, and a pair of support arms are provided near the base end of each of the support arms and either of the arm support parts. A support shaft protruding from one side is passed through a support hole provided on the other side, so that each of the support arms is rotatably supported by a traveling vehicle, and the arm support portion is provided on both sides of the support arm in the width direction. A width direction regulating member is provided for regulating the movement of each support arm, and the support hole is formed in an elongated hole shape to allow vertical movement of each support arm. The thickness is set to be larger than the thickness of the corresponding part of each support arm, and between the traveling vehicle and each support arm, the tip of each support arm is actuated by an actuator to move up and down individually. Since the scarifier device is equipped with a position adjustment mechanism that moves the main body of the scarifier device up and down or tilts it in the width direction of the vehicle, it is necessary to form a paved road surface that slopes from the center of the paved road surface to the sides. In certain cases, the main body of the scarifier device can be tilted easily and safely by operating the position adjustment machine, and the present invention has an excellent effect in that a desired inclined scraping surface can be obtained.

[Brief explanation of drawings]

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 XI--XI in FIG. 2, and FIG. 12 is a schematic diagram showing another embodiment of the present invention. 1... Traveling vehicle, 20, 21... Leveling arm (support arm), 29... Hydraulic cylinder (position adjustment mechanism), 111, 112... Leveling arm (support arm), A... Recycling heater,
B...The main body of the scarifier device.

Claims (1)

[Scope of Claims] 1 A pair of support arms each having a scarifier device main body attached to their tips are supported by arm support portions provided on both sides of a traveling vehicle, and a pair of support arms are provided near the base end of each of the support arms. A support shaft protruding from one of the arm support parts is passed through a support hole provided in the other, so that each of the support arms is rotatably supported by the traveling vehicle. Width-direction regulating members are provided to restrict movement of the support arms to both sides in the width direction, and the support holes are formed in an elongated shape to allow vertical movement of each support arm, and The distance between the direction regulating members is set to be larger than the thickness of the corresponding part of each of the support arms, and between the traveling vehicle and each of the support arms, an actuator is actuated to control the tip of each of the support arms. By moving up and down individually,
A scarifier device for an asphalt paving work vehicle, characterized in that the scarifier device is provided with a position adjustment mechanism that moves the main body of the scarifier device up and down or tilts it in the width direction of a traveling vehicle.