JPS6223125B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work vehicle, ie, a road planer, for removing old or damaged asphalt road surfaces during paved road repair work.

As shown in Fig. 1, the conventional road planer scrapes off the road surface with teeth b disposed in the center of the vehicle body a, and ejects the stripped pieces of the road surface to the side with blades c disposed on the rear side. In addition, a heating device d is provided on the front side of the vehicle body a to soften the road surface so that the tooth b can easily scrape off the road surface, thereby preventing wear and tear on the tooth b.

However, with the above-mentioned road planer, (a) the peeled surface of the road surface becomes rough and the shape of the peeled pieces becomes uneven, making it difficult to discharge the peeled pieces with the blade c; (b) After heating and softening the road surface, tooth b
This requires time and reduces work efficiency.
(c) The heating device d is heavy and expensive, and consumes a large amount of fuel.

There are drawbacks in terms of work efficiency, vehicle operation, and economics.

The present invention aims to solve the above-mentioned difficulties in conventional road planers, and aims to scrape off the road surface using teeth placed in the center of the vehicle body, and remove the road surface using blades placed on the rear side. A cutter device comprising: a road planer configured to discharge pieces to the side; a bracket that is raised and lowered by a lift cylinder is disposed on the front side of the vehicle body; and a disk cutter having a rotational drive mechanism is attached to the bracket. It is characterized by having a structure in which the road surface is continuously cut and stripped, and the stripped pieces are discharged to the side. The object of the present invention is to provide a road planer that improves the work efficiency of road surface removal by peeling off the road surface with teeth after making continuous parallel cuts.

The present invention has the above-described configuration,
By driving the disc cutter rotated by the lift cylinder into the road surface and moving the vehicle forward, continuous cuts parallel to the road surface can be efficiently formed, making it easy to strip the road surface between the continuous cuts using teeth. The resulting peeled pieces become substantially uniform small pieces, and furthermore, the peeled pieces can be easily discharged with a blade. Therefore, each of the disk cutters, teeth, and blades can work smoothly and quickly, and the road surface removal work of the entire road planer can be made extremely efficient, and energy consumption can be significantly reduced.

An embodiment of the present invention will be described below with reference to the drawings. Embodiments of the present invention are shown in FIGS. 2, 3, and 4, in which a represents a vehicle body with running wheels, b represents teeth disposed at the lower center of vehicle body a, and c represents vehicle body a.
The blade is arranged on the rear side of the tooth b, and is capable of adjusting the vertical position and the inclination angle with respect to the traveling direction by a mechanism not shown,
In this embodiment, a disk cutter device f is provided on the front side of the vehicle body a.

As shown in the figure, the disk cutter device f has a bracket 5 fixed to the front part of the vehicle body a, a support 6 fixed to the bracket 5, and a plate 8 protruding from the rear side, which are pivotally connected to the support 6 to raise and lower the front side. A freely movable bracket 7, a lift cylinder 9 for raising and lowering the bracket 7 interposed between support a' on the side of the vehicle body a and support 7' on the side of the bracket 7, and a lift cylinder 9 installed between the tips of the bracket 7 with a horizontal axis. It consists of a disk cutter 10 consisting of a large number of disks, a rotation drive mechanism for the disk cutter 10 consisting of a hydraulic motor 12 attached to the upper part of a bracket 7, and a chain 16 between sprockets 13 and 14.

Since the illustrated embodiment has the above-described structure, the sprockets 13 and 1 are operated by the hydraulic motor 12.
4 and the chain 16, the disk cutter 10 of the disk cutter device f is rotated (at high speed), the lift cylinder 9 is extended, the disk cutter 10 is bitten into the road surface via the bracket 7, and the vehicle body a is moved forward. , each disc of the disc cutter 10 forms a continuous cut parallel to the road surface. The amount of the disc cutting into the road surface, that is, the depth of the cut can be freely adjusted and set by adjusting the weight of the disc cutter device f and the amount of extension of the lift cylinder 9, so the cut in the road surface by the disk cutter device f is as follows. The cuts are made in multiple parallel lines extending in the direction of movement of the vehicle body a, and are substantially uniform reaching the depth of the road surface removal range, making it possible to form the cuts efficiently and making it possible to remove them with the next tooth. It becomes easier. (See Figure 5).

Next, the teeth b disposed on the rear side (in the center of the vehicle body) of the disc cutter device f are arranged so as to be located between the respective discs of the disc cutter 10, that is, between the cuts, as shown in FIG. Therefore, each tooth of tooth b strips off a limited amount of the road surface between the cuts, and the road surface is stripped off smoothly by tooth b, and wear and tear on the teeth is significantly reduced, and the stripping pieces are It becomes a substantially uniform small piece. Incidentally, the spacing between the discs of the disc cutter 10, that is, the spacing between the cuts, is set depending on the condition of the road surface, the stripping ability of the teeth b, and the like.

As described above, since the pieces peeled off by the tooth b become small pieces, the peeled pieces can be smoothly discharged to the side by the blade c disposed on the rear side.

Therefore, according to the embodiment described above, the cutting on the road surface by the disc cutter device f is efficiently and properly performed, and the stripping of the road surface by the tooth and the discharge operation by the blade are also performed smoothly.
When performing repair work on a paved surface, the road surface, that is, the asphalt road surface, can be efficiently removed. Further, since the vehicle body a moves smoothly without requiring road surface heating as in the conventional case, energy consumption can be significantly reduced.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a side view showing an outline of a conventional road planer, Fig. 2 is a side view showing an embodiment of the present invention, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is a disk cutter of Fig. 2. An enlarged sketch showing the structure of the device, and FIG. 5 is an explanatory diagram of the operation of the embodiment. a...Vehicle body, b...Tooth, c...Blade, f...Disc cutter device, 7...Bracket, 9...Lift cylinder, 10...Disk cutter, 12...Hydraulic motor, 13, 14...Sprocket, 16...Chain.

Claims (1)

[Claims] 1. In a road planer configured to scrape off the road surface using teeth arranged in the center of the vehicle body and eject the peeled pieces of the road surface to the side using blades arranged on the rear side, A cutter device is equipped with a bracket that is moved up and down by a lift cylinder, and a disc cutter having a rotational drive mechanism is attached to the bracket, and the cutter device continuously cuts and strips the road surface and peels off the strips laterally. A road planer characterized by having a configuration that discharges the air.