JPH0332568Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a rotary scarifier installed in road surface regeneration machines such as repavers used in asphalt pavement maintenance and repair methods. equipment).

[Conventional technology]

A conventional rotary raking device has a plurality of scarf ear blades or screeds behind a plurality of rotors for raking the road surface, which level the pavement material raked by the rotors. It has a separate configuration.

[Problem that the invention attempts to solve]

However, in the above conventional scraping device,
When changing the scraping width by moving the rotor left and right, the scarifier ear blade must also be moved left and right to match the leveling width to the scraping width of the rotor, which is less workable. There is a problem. Furthermore, since the supporting devices for the rotor and the scarf ear blades are manufactured separately, there is a problem in that the entire machine not only becomes larger but also more complicated.

[Means for solving the problem] The present invention has a pair of left and right guide rods on a frame attached to a vehicle, with their axial directions oriented in the left-right direction perpendicular to the traveling direction of the vehicle.
and a movable frame is provided on each of the guide bars, the movable frame being shifted in position in the running direction of the running vehicle, and movable in the axial direction with respect to each guide bar, and movable frames are provided on each of the guide bars, and the movable frame is shifted in position in the running direction of the running vehicle, and is movable in the axial direction with respect to each guide bar. Each of the movable frames is supported integrally and movably, and a rotor that is rotated by a rotary drive device to scrape up the paving material is attached to each of the movable frames so that their respective axes are oriented in the left-right direction, and the rotor is oriented in the traveling direction of the vehicle. At the rear of each rotor of each movable frame, a scarf ear blade is installed to flatten the paving material scraped up by the rotor, and is moved in the left-right direction together with each movable frame. The configuration allows each to be attached freely.

[Effect]

In normal scraping work for asphalt paved roads, a plurality of rotors are rotated by a rotational drive device to scrape up the asphalt paved roads. When it becomes necessary to change the raking width due to changes in work conditions such as a change in the width of the road, the movable frame is moved laterally relative to the frame using a hydraulic cylinder or the like. By this operation, the rotor and the scarf ear blade simultaneously move horizontally by the same dimension to change the raking width and the leveling width.

〔Example〕

Figure 1 shows a repaver equipped with a scraping device for a road surface regeneration machine according to the present invention.
It is equipped with a bar feeder 4 for taking out the asphalt mixture from the hopper 2 and discharging it to the rear spreading screw 3, a leveling device 5, and a scraping device 6 according to the present invention. Become. The scraping device 6 of the present invention is provided at the tip (first
A mounting member 10 fixed to the main frame 9, 9a, 9b is attached to the main frame 9, 9a, 9b so as to be rotatable up and down and slightly tilted (swingable) left and right on a mounting shaft 11. The main frame 9a,
The inclination angle of the hydraulic cylinder 9b is adjusted, and the hydraulic cylinder 1 is provided between the traveling vehicle 1 and the mounting member 10.
3, the vertical position can be adjusted.

Figures 2 to 10 show the scraping device 6 of the present invention.
14a and 14b are guide rods. These guide rods 14a, 14b
are bushes 16a, 1 provided on main frames 9a, 9b and center frames 15a, 15b.
6b, and the outer plate 1 is inserted into the outer end thereof.
8a, 18b, and the inner plate 1 at the inner end.
9a and 19b (both omitted in FIG. 2) are fixed respectively. The outer plates 18a, 18b and the inner plate 19a,
19b is integrally coupled with a rotor cover 20 to constitute movable frames 17a, 17b, and bearings 21, 22 at the lower end have rotors 23a, 2 which will be described later.
3b is rotatably supported in the circumferential direction, and a forward/reverse rotation drive device 25 such as a hydraulic motor is attached to the outer plates 18a, 18b.
a and 25b, it can be rotated in the circumferential direction via a drive sprocket 26, a chain 27, and a passive sprocket 28.

Further, at the rear end portions of the outer plates 18a and 18b (the right end portion in FIG. 2), the outer plate 18
A pair of upper and lower brackets 18 fixed to a and 18b
A screw shaft 34 is rotatably attached by screws c and 18d, and a nut body 29 fixed to the scarifier ear blades 29a and 29b is attached to the screw shaft 34.
c and 29d are screwed together in a vertically adjustable manner.
And the scarif ear blades 29a, 2
9b has its inner end side connected to the main frames 9a, 9
A pair of front and rear guides 58a, 59a fixed to b,
58b, 59b and the slide grooves 30a, 30b, 30c formed in the center frame 15b to prevent the traveling vehicle 1 from moving in the longitudinal direction.
The screw shaft 34 is configured to allow vertical and horizontal movement.
is supported in a cantilever manner with respect to the outer plates 18a, 18b. Note that the outer ends of the scarf ear blades 29a, 29b are provided with vertical reinforcing members 56a, 56b extending in the vertical direction, and the lower ends thereof are provided with a horizontal reinforcing member 5 having a triangular cross section in the horizontal direction.
7a and 57b are each fixed by welding or the like. The rotors 23a and 23b are provided with their axial directions oriented in the left-right direction perpendicular to the traveling direction of the traveling vehicle 1, and positions shifted in the traveling direction of the traveling vehicle 1 (front-back direction).

Between the main frames 9a, 9b and the center frames 15a, 15b, there are mounting members 31a,
31b is constructed, and their mounting members 31a,
Hydraulic cylinders 32a and 32b are attached to 31b. Hydraulic cylinders 32a, 32b move movable frames 17a, 17b to rotate rotors 23a, 2.
3b and scarifier ear blades 29a, 29b to the left and right (in the width direction of the vehicle 1), and connects piston rods 33a, 33b to outer plates 18a, 18b. The center frames 15a and 15b are connected by a center pin 35 so as to be rotatable with respect to each other in the left and right directions in FIG. A yoke 37 having a nut structure is rotatably attached to a bracket 36 provided on one center frame 15a by inserting its shaft 38 into a shaft hole 39 of the bracket 36, and a yoke 37 is rotatably attached to a bracket 36 provided on the other center frame 15b. Bracket 40
A cylindrical yoke 41 is rotatably provided by inserting its shaft 42 into a shaft hole 43 of a bracket 40.

Reference numeral 44 is a threaded rod, and the shank 45 controls movement in the axial direction.
It is fastened by a nut 46 and inserted into the yoke 41 so as to be rotatable in the circumferential direction, and its threaded portion 44a is screwed into the other yoke 37. Therefore, in the above configuration, when the threaded rod 44 is rotated, the distance between the brackets 36 and 40 changes, and the center frame 1
5a, 15b rotate around the center pin 35 together with the main frames 9a, 9b to rotate the rotors 23a,
23b and scarif ear blades 29a, 29
Fold each part b into a V-shape. Above threaded rod 4
A thrust bearing 48 is inserted between the yoke 41, the collar 45, and the nut 46 in order to smoothly rotate the yoke 41. Reference numeral 49 (FIG. 2) is a coupling member having a channel structure, which integrally couples the main frames 9a, 9b and the center frames 15a, 15b together with the mounting members 31a, 31b.

The detailed structure of the rotors 23a and 23b is as follows.
As shown in FIGS.

To explain this, the rotary barrel 24 consists of a pipe-shaped small diameter part 24a and a bowl-shaped large diameter part 24b provided at both ends of the small diameter part 24a.
The large diameter portion 24b is provided with a bit 52c (the bits 52a, 52b, and 52c are omitted in FIG. 11). The bits 52a, 52b, and 52c are attached to the rotating barrel 24 by bolts 53 with a constant distance from the center of the rotating barrel 24 to the tip. A reinforcing member (wear-resistant layer) 47 is attached to the tip of the screw 51.
It is welded as shown in Figure 2. In addition, bit 52
The tips of a, 52b, and 52c protrude outward slightly (about 30 mm in the figure) than the tip of the reinforcing member 47. In addition, the two rotors 23a in the figure,
23b has screws and bits arranged in the same way, but they can also be arranged symmetrically.

Therefore, the leveling device 5 has rotors 23a, 2
3b, it is provided with two screeds 54a and 54b that are movable left and right, and is attached to the vehicle 1 by an arm 55 in a well-known manner.

Next, the operation of the scraping device of the road surface regeneration machine according to the present invention will be explained.

The hydraulic cylinder 13 is extended to lower the scraping device 6 onto the road surface, and the two forward and reverse rotation drive devices 25
The vehicle 1 is caused to travel to the left in FIG. 1 while rotating the rotors 23a and 23b in the forward direction, that is, in the counterclockwise direction in FIG. 1, by the operation of the rotors a and 25b. As a result, the paving material has bits 52a, 52b, 5
It is scraped up by the screw 2c, moved in the axial direction of the rotor by the screw 51, and leveled by the scarifier ear blades 29a, 29b. If the thickness of the asphalt pavement is uneven in the width direction of the road and it becomes necessary to move the scraped up pavement material in the opposite direction, the forward and reverse rotation drive devices 25a and 25b can be moved in the opposite direction. Rotate and continue scraping work. Incidentally, the bar feeder 4, the leveling device 5, etc. are operated in the same manner as before.

In the above, when there is a crown on the road surface, the threaded rod 44 is rotated and the center frames 15a, 15b are rotated around the center pin 35 so that the distance between the brackets 36, 40 is increased, and the rotors 23a, 23b are rotated. slope to match the crown of the road surface. At this time, the scarf ear blades 29a, 29b also tilt together with the rotor.

In addition, when the width of the road surface is wide or narrow, the hydraulic cylinders 32a and 32b are expanded and contracted to move the movable frames 17a and 17b to the main frame 9.
a, 9b, the rotors 23a, 23b
Raising width and scarf ear blade 29a, 2
Adjust the leveling width in 9b. two rotors 23a,
In order to set the relationship between 23b and the road surface to a predetermined state, the adjustment member 12 is operated to rotate the scraping device 6 up and down about the mounting shaft 11. In this case, when the scraping device 6 is rotated downward in FIG. 1, the scraping depth is lower than the scraping depth of the front rotor 23a.
The scraping depth of the rear rotor 23b is greater. Conversely, if you rotate it upward, the front rotor 23
The scraping depth of a is deeper.

When the raking work is completed, the hydraulic cylinder 13 is contracted to raise the raking device 6 from the road surface (it goes without saying that the leveling device 5 is also raised).

In addition, the scarif ear blade shown in the picture 29
a, 29b are provided so as to be in contact with each other in the front and back, but one scarf ear blade 29a
can also be located directly behind the rotor 23a, separated from the other scarf ear blade 29b. In addition, scarf ear blades 29a, 29
b is provided cantilevered, but outer plates 18a, 18b and inner plates 19a, 1
It can also be supported vertically and freely adjustable on both sides 9b.

[Effect of idea]

As explained above, in the scraping device of the road surface regeneration machine of the present invention, a pair of left and right guide rods are attached to a frame attached to a traveling vehicle, and the guide rods are mutually moved in the left and right direction orthogonal to the traveling direction of the traveling vehicle. The axial direction of the guide rods are oriented in the axial direction, and the positions are shifted in the traveling direction of the traveling vehicle, so that the movable frames are movable relative to each other in the axial direction. Each of the movable frames is supported integrally with the guide rod so as to be movable in the left and right directions, and each movable frame has a rotor that is rotated by a rotary drive device to scrape up the paving material. The scarf ear blades are provided at positions facing the same direction and shifted in position in the traveling direction of the vehicle, and behind each rotor of each movable frame, there are scarf ear blades for flattening the paving material scraped up by the rotors. ,
Since each movable frame is attached so that it can move freely in the left and right directions, just by moving the movable frame, the rotor and scarifier ear blades can be moved laterally at the same time and in the same dimension, and the rotor can be scraped up. The width and leveling width of the scarf ear blade can be changed accurately and quickly. Further, since the rotor and the scarf ear blade are integrally provided on the movable frame, the overall structure can be downsized and simplified.

[Brief explanation of the drawing]

Figure 1 is a side view of a repaver equipped with a scraping device for a road surface regeneration machine according to the present invention, Figure 2 is a plan view of the scraping device, and Figures 3 and 4 show the outer plate and rotor. 5 is a side view showing the installed state of the present scraping device, FIG. 6 is a plan view of the adjustment member, and FIG. 7 is a side view showing the relationship between the guide rod, hydraulic cylinder, etc. , FIG. 8 is a front view showing the connected state of the two center frames, FIG. 9 is a side view showing the relationship between the forward/reverse rotation drive device and the rotor, etc.
Fig. 10 is a cross-sectional view of the rotor, Fig. 11 is a front view of the rotor with the bit omitted, and Fig. 12 is the XII-XI of Fig. 11.
13 is a schematic exploded view showing the arrangement of the bit and screw, FIG. 14 is a front view showing the installed state of the bit, and FIG. 15 is a side view of the same,
6 is a front view showing how other bits are attached, FIG. 17 is a front view of the same, FIG. 18 is a front view showing how yet another bit is attached, and FIG. 19 is a front view of the same. 9a, 9b... Main frame, 14a, 14
b... Guide rod, 15a, 15b... Center frame, 17a, 17b... Movable frame, 23a, 23
b... Rotor, 25a, 25b... Forward/reverse rotation drive device, 29a, 29b... Scarif ear blade.

Claims (1)

[Scope of utility model registration request] Frames 9a, 9 attached to the traveling vehicle 1
b, 15a, 15b, a pair of left and right guide rods 14
a and 14b are provided with their axial directions facing each other in the left-right direction perpendicular to the traveling direction of the traveling vehicle 1, and are provided so as to be movable in the axial direction with their positions shifted in the traveling direction of the traveling vehicle 1, and each of the above Guide rods 14a, 14
In b, the movable frames 17a and 17b shift their positions in the traveling direction of the vehicle 1, and each guide rod 14a,
The movable frames 17a, 14b are integrally supported so as to be movable in the left and right direction, and the movable frames 17a,
17b includes rotors 23a and 23b that are rotated by a rotary drive device to scrape up the paving material.
The rotors 23 of each movable frame 17a, 17b are provided with their respective axial directions oriented in the left-right direction and shifted in position in the traveling direction of the traveling vehicle 1.
Scarifier ear blades 29a and 29b are installed behind each movable frame 1 behind the movable frames 1 and 23b to flatten the paving material scraped up by the rotors 23a and 23b.
A scraping device for a road surface regeneration machine, characterized in that the scraping device is mounted movably in the left and right directions together with parts 7a and 17b.