JPH064113U - Road stabilizer work machine - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the bit interval of conical bits is widened, the bit box will not be worn early and the number of conical bits can be reduced compared to the working width. [Structure] A plurality of disks 20 are overlapped and connected. A plurality of roof bits 23 are attached to the disks 20 on the left and right sides. Two roof bits 23 and 4 on the remaining disk 20
Install the two conical bits 24 at different positions in the direction of rotation, crush the asphalt concrete with the conical bits 24 to make fine particles, and scoop the finely divided asphalt concrete with the roof bit 23 to convey it to the rear of the working machine. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work machine for a road stabilizer that treats on-road recycled roadbed by crushing asphalt concrete on an asphalt concrete road and mixing it with roadbed material.

[0002]

[Prior art]

 As shown in Fig. 1, a road stabilizer is one in which a working machine 2 is mounted on a vehicle body 1, the asphalt concrete is crushed by the working machine 2 and mixed with roadbed materials for road regeneration treatment. 2 is a disk-type working machine in which a plurality of discs 4 each having a roof bit 3 shown in FIG. 2 are stacked, and a drum-type working machine in which a plurality of conical bits 6 are mounted on a drum 5 shown in FIG. ing.

[0003]

[Problems to be solved by the device]

 As shown in FIG. 4, the roof bit 3 attached to the disk type working machine 2 is composed of a mounting base 7 and a blade portion 8 in the shape of a human grip, and the blade portion 8 forms an asphalt concrete A. As shown in Fig. 5, since it is cut into lumps and mixed with the roadbed material B, the cut asphalt concrete lumps C cannot be refined and become large. For this reason, if the lump C of cut asphalt concrete is large, it cannot be mixed well with the roadbed material B. Therefore, it is troublesome for the operator to remove the large lump C of asphalt concrete before performing the rolling work with the rolling roll.

As shown in FIG. 6, a conical bit 6 attached to a drum type working machine 2 is a bit box 9 having a tip-shaped bit 10 attached thereto, and the tip 10 a of the bit 10 serves asphalt concrete A. 7 can be crushed as shown in FIG. However, if the bit interval of the conical bit 6 is widened, the bit box 9 collides with the finely crushed asphalt concrete mass C and wears early, so the bit interval of the conical bit 6 is narrowed, and thereby the conical bit 6 is narrowed. The number of bits 6 is larger than the working width and the cost is high, and the crushed asphalt concrete A is too fine. Further, since a plurality of conical bits 6 are attached to the drum 5, the resistance due to cutting becomes large and the working speed becomes slow.

Therefore, an object of the present invention is to provide a load stabilizer working machine capable of solving the above-mentioned problems.

[0006]

[Means for Solving the Problems]

A plurality of discs 20 are overlapped and connected, and a plurality of roof bits 23 and a plurality of conical bits 24 are attached to the respective discs 20 at different positions in the rotational direction, and the mounting radius R ₁ of the conical bits 24 is set to the roof bit 23. A work machine for road stabilizers that is larger than the mounting radius R _{2 of} .

[0007]

[Work]

 The asphalt concrete A can be crushed into fine particles with the conical bit 24, and the finely divided asphalt concrete C can be scooped with the roof bit 23 and transported to the rear of the working machine, so that the conical bit 24 rotates and moves. The bit box of the conical bit 24 does not prematurely wear even if the amount of the finely divided asphalt concrete C is reduced and the bit interval of the conical bit 24 is increased.

[0008]

【Example】

 As shown in FIG. 8, the disc 20 has a shape in which two plates are connected by bolts and a plurality of protrusions 21 and recesses 22 are alternately provided on the outer peripheral edge. The protrusions 21 are provided with roof bits 23 and conical bits 24. A plurality of discs 20, for example, 10 discs, are attached and connected to form a working machine. The roof bit 23 is composed of a mounting portion 25 and a blade portion 26, and the mounting portion 25 is mounted on a bit box 27, and the conical bit 24 has a shape having a pointed portion 28 and is mounted on a bit box 29. is there.

Next, the mounting of the roof bit 23 and the conical bit 24 will be described. As shown in FIG. 9, only the roof bits 23 are attached to the discs 20 on the left and right sides in a rotationally displaced manner, and two roof bits 23 and four conical bits 24 are provided on the eight discs 20 in the middle of the left and right. Each roof bit 23 is installed at a different position in the direction of rotation, that is, at a position where the cutting locus is different, to facilitate the mixing of cut asphalt concrete and roadbed material, and each conical bit 24 is installed in the direction of rotation. It is installed at different positions, that is, at different cutting trajectories in the working width direction. The conical bit 24 crushes the asphalt concrete into fine particles, and the roof bit 23 crushes it to scoop the finely divided asphalt concrete. In addition, the mounting radius R ₁ of the conical bit 24 is larger than the mounting radius R ₂ of the roof bit 23. Then, the conical bit 24 projects from the roof bit 23.

Next, the operation of processing the reclaimed roadbed on the asphalt concrete road will be described. As shown in FIG. 10, the conical bit 24 rotates along the locus D to crush the asphalt concrete A at the point 28. The roof bit 23 rotates along a locus E as shown in FIG. 11, and the locus E is located inside the locus D of the conical bit 24 by a mounting radius difference (R ₁ −R ₂ ), and the roof bit 23 is asphalt concrete. The roof bit 23 is crushed by the conical bit 24 without interfering with A, and the asphalt concrete C crushed by the conical bit 24 is scooped and conveyed to the rear of the working machine as shown in FIG. As a result, the amount of crushed and finely divided asphalt concrete C in the rotating portion of the conical bit 24 can be reduced, and the bit box 29 of the conical bit 24 can be prevented from prematurely wearing, and the number of conical bits 24 can be reduced. It can be reduced compared to the working width L.

[0011]

[Effect of device]

 The asphalt concrete A can be crushed into fine particles with the conical bit 24, and the finely divided asphalt concrete C can be scooped with the roof bit 23 and transported to the rear of the working machine, so that the conical bit 24 rotates and moves. The bit box of the conical bit 24 does not prematurely wear even if the amount of the finely divided asphalt concrete C is reduced and the bit interval of the conical bit 24 is increased. Therefore, the number of conical bits 24 can be reduced compared to the working width to reduce the cost, and the fine-grained asphalt concrete C does not become as fine as a drum-type working machine, and a large lump of asphalt concrete can be obtained. Since this is not possible, it is not necessary for the operator to remove large asphalt concrete blocks before rolling. The cutting resistance does not change much from the conventional disk type work machine, the work speed does not drop extremely, and it is possible to crush thicker asphalt concrete.

[Brief description of drawings]

FIG. 1 is a front view of a road stabilizer.

FIG. 2 is a front view of a disk type working machine.

FIG. 3 is a front view of a drum type working machine.

FIG. 4 is an operation explanatory view of the disk type working machine.

FIG. 5 is an explanatory diagram of a cutting operation using a roof bit.

FIG. 6 is an operation explanatory view of the drum type working machine.

FIG. 7 is an explanatory diagram of a crushing operation using a conical bit.

FIG. 8 is a front view of a disk constituting the working machine of the present invention.

FIG. 9 is an explanatory diagram showing an arrangement of roof bits and conical bits of a plurality of disks.

FIG. 10 is an explanatory diagram of a crushing operation of a conical bit.

FIG. 11 is an explanatory diagram of a scooping operation of the roof bit.

[Explanation of symbols]

20 ... disk, 23 ... roof bit, 24 ... conical bit, 28 ... point, 29 ... bit box.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Iwamura 1-3 Takaracho, Kashiwazaki-shi, Niigata Komatsu Est Co., Ltd. Head Office Factory (72) Inventor Jin Yasumatsu 1-19-11 Kyobashi, Chuo-ku, Tokyo Japan Inside the Road Co., Ltd. (72) Inventor Tatsuro Sato 1-19-11 Kyobashi, Chuo-ku, Tokyo Inside the Japan Tread Road Co., Ltd. (72) Inventor Akira Kinda 2-3-6 Akasaka, Minato-ku, Tokyo Komatsu Ltd. Head office

Claims (1)

[Scope of utility model registration request] 1. A plurality of disks 20 are overlapped and connected,
A plurality of roof bits 23 and a plurality of conical bits 24 are attached to the respective disks 20 at different positions in the rotational direction, and the mounting radius R ₁ of the conical bits 24 is made larger than the mounting radius R ₂ of the roof bit 23. A work machine for a road stabilizer.