JPH0320523B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rotary scarifier (scraping device) mounted on road surface regeneration machines such as repavers used in asphalt pavement maintenance and repair methods. .

[Conventional technology]

A conventional rotary raking device has a structure in which a rotor having bits embedded in the outer circumferential surface of a rotary drum is rotated in one direction by a single rotary drive device to scrape an asphalt paved road.

[Problem that the invention seeks to solve]

However, with the above-mentioned conventional raking device, the paving material raked up by the rotation of the rotor is simply spread with the rear blade device, so the surface of the pavement has ruts and unevenness in the vertical and transverse directions of the road. In some cases, a function is required to feed the scraped material into the concave part of the rut, or to discharge the scraped material when it becomes excessive, and the scraping function alone, which cannot move the material, may be dissatisfied with poor workability. It was hot.

[Means for solving problems]

In the present invention, a plurality of rotors having bits and screws attached to the outer circumferential surface of a rotary drum are attached to a frame with their axial directions aligned in a substantially horizontal plane and substantially parallel to each other or in a substantially straight line. The above-mentioned problems of the conventional art are solved by providing forward and reverse rotation drive devices for individually rotating the motors.

[Effect]

In a normal scraping operation for an asphalt paved road, a plurality of rotors are individually rotated in the forward direction by forward and reverse rotation drive devices attached to the rotors to scrape up the asphalt paved road. In this case, the paving material scraped up by the bit is moved in a predetermined direction by the screw. If there are ruts or unevenness on the surface of the pavement in the longitudinal and transverse directions of the road, or if it is necessary to change the direction of movement of the scraped pavement material for other reasons, the direction of rotation of the forward/reverse rotation drive device should be changed. switch to rotate the rotor in the opposite direction. In this case, depending on the situation, it is selected whether all the rotors are rotated in the opposite direction or only some of the rotors are rotated in the reverse direction.

〔Example〕

FIG. 1 shows a repairer 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 mounted on a main frame 9 (9a,
9b) on the mounting shaft 1.
1: freely rotates up and down, and tilts left and right (swings)
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
The inner end of 9b is the main frame 9a, 9b.
A pair of front and rear guides 58a, 59a, 5 fixed to
8b, 59b and the slide grooves 30a, 30b; 30c formed in the center frame 15b, the vehicle 1 is prevented from moving in the front-rear direction, but is allowed to move up and down and left and right. It is supported by a screw shaft 34 in a cantilever manner with respect to the outer plates 18a and 18b. 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 horizontal reinforcing members 57a, 57b having a triangular cross section in the horizontal direction. They are fixed together by welding or the like. The rotors 23a and 23b are provided with their axial directions substantially parallel within a substantially horizontal plane.

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 4
0, a cylindrical yoke 41 is rotatably provided with its shaft 42 inserted 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, 29b
Fold each into a shape. The above threaded rod 44
A thrust bearing 4 is installed between the yoke 41, the collar 45, and the nut 46 in order to smoothly rotate the
8 has been inserted. Main frame 9a, 9b
The center frames 15a and 15b are integrally connected by a connecting member 49 having a channel structure.

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 47 is fixed to the tip of the screw 51 by means such as welding, as shown in FIG. Note that the tips of the bits 52a, 52b, and 52c are connected to the reinforcing member 4.
Slightly smaller than the tip of 7 (the one in the picture is about 30mm)
protrudes outward. In addition, the two rotors 2 in the figure
3a and 23b have 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 for 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 mass of pavement material in the opposite direction, the forward and reverse rotation drive devices 25a and 25b are rotated in the opposite direction. Continue scraping work. In addition, Barfeeda 4
The leveling device 5 and the like 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
Adjust the scraping width. In this case as well, the scarf ear blades 29a, 29b are connected to the rotors 23a, 23.
Follow the movement of b. Two rotors 23a, 23
To set the relationship between B and the road surface to a predetermined state, operate the adjusting member 12 and adjust the scraping device 6 to the mounting shaft 1.
Rotate up and down around 1. In this case, when the scraping device 6 is rotated downward in FIG.
The scraping depth of the rear rotor 23b is greater than the scraping depth of the front rotor 23a. Conversely, when the rotor 23a is rotated upward, the rake depth of the front rotor 23a becomes 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 thing in the figure is a forward/reverse rotation drive device 25a,
25b itself has a forward/reverse rotation switching function,
It is also possible to incorporate a forward/reverse rotation switching mechanism into the transmission mechanism such as the chain 27. Also, the one in the picture is
The two rotors 23a and 23b are divided into front and rear parts and arranged so as to be movable in the axial direction, but two or three or more rotors are arranged in the front and rear or in a substantially straight line in the axial direction. You may.

〔Effect of the invention〕

As explained above, in the scraping device of the road surface regeneration machine of the present invention, a plurality of rotors each having bits and screws attached to the outer circumferential surface of a rotary drum are arranged in a plane that is substantially parallel to each other in the axial direction or almost parallel to each other in the axial direction. The rotors are mounted on the frame in a straight line, and each of the rotors is equipped with a forward/reverse rotation drive device that rotates the rotors individually. Since it can be rotated, the raked paving material can be moved in the desired direction. Therefore,
Even if there are ruts or unevenness on the surface of the pavement in the vertical and transverse directions, it can be immediately corrected and the quality of the reclaimed road can be improved by rotating the rotor forward and backward to move and spread the scraping material.

[Brief explanation of drawings]

FIG. 1 is a side view of a repaver equipped with a scraping device for a road surface regeneration machine according to the present invention, FIG. 2 is a plan view of the scraping device, and FIGS. 3 and 4 show an outer plate and a rotor. A side view showing the relationship between
B is a side view showing the installed state of this scraping device, FIG. 6 is a plan view of the adjustment member, FIG. 7 is a side view showing the relationship between the guide rod and the hydraulic cylinder, etc., and FIG. 8 is the two center Front view showing the connected state of the frame, No. 9
The figure is a side view showing the relationship between the forward/reverse rotation drive device and the rotor, etc., Figure 10 is a sectional view of the same, Figure 11 is a front view of the rotor with bits omitted, and Figure 12 is XII-XII of Figure 11. 13 is a schematic exploded view showing the arrangement of the bit and screw, Fig. 14 is a front view showing the bit installation state, Fig. 15 is a side view of the same, and Fig. 16 is the installation of other bits. FIG. 17 is a front view showing the state, FIG. 17 is a side view, FIG. 18 is a front view showing a state in which another bit is attached, and FIG. 19 is a side view. 9a, 9b... Main frame, 23a, 23
b... Rotor, 24... Rotating body, 25a, 25b
... Forward and reverse rotation drive device, 51 ... Screw, 52
a, 52b, 52c...bit.

Claims (1)

[Scope of Claims] 1. A plurality of rotors each having bits and screws attached to the outer circumferential surface of a rotary drum are attached to a frame with their axial directions aligned in a substantially horizontal plane and substantially parallel to each other or in a substantially straight line. A scraping device for a road surface regeneration machine, characterized in that each rotor is provided with a forward and reverse rotation drive device for rotating the rotors individually. 2. The scraping device for a road surface reclamation machine as set forth in claim 1, wherein the tip of the bit is made to protrude further outward than the tip of the screw. 3. The scraping device for a road surface regeneration machine according to claim 1, characterized in that two rotors are provided movably in the axial direction with the axial directions substantially parallel to each other.