JPH07166522A - Road surface cutting device - Google Patents

Abstract

PURPOSE:To prevent the ice pieces and snow overflowed into the central separation zone side of a road from being accumulated on the road without requiring manual labor by adding a simple structure. CONSTITUTION:A rotary cutter 5 fitted on the front face in the traveling direction of a work vehicle 1 and extended to the right and left directions of the work vehicle 1 is rotated to cut the road surface into the desired shape, and the cut/removed object by the rotary cutter 5 is guided and discharged to one side A of the right and left directions of the work vehicle 1 by a succeeding guide plate 6. This road surface cutting device is provided with a deposit collapsing member 16 collapsing a road deposit C of the cut/removed object discharged by the rotation of the rotary cutter 5 during the advance travel of the work vehicle 1 on the side section B opposite to the discharge side of the cut/removed object by the guide plate 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface cutting device for cutting a frozen road surface or the like into a desired shape, and more particularly to a road surface cutting device used by being attached to a work vehicle such as a wheel loader in an attachment manner.

[0002]

2. Description of the Related Art As a road surface cutting device which is attached to a work vehicle such as a wheel loader and used in an attachment manner, it is connected to a lifting arm 2 of a work vehicle 1 as shown in FIGS. There is a frame 3 in which a rotary cutting body 5 is attached via a stay 4 and a blade 6 is arranged behind the rotary cutting body 5 (see JP-A-4-350206). The rotary cutting body 5 is constructed by, for example, attaching a large number of cemented carbide cutting blades 5b to the outer periphery of a blade member 5a that is twisted in a spiral shape. In such an apparatus, the rotary cutting body 5 is rotated around the axis in the vehicle left-right direction by the hydraulic motor 7 in a forward traveling state of the work vehicle to cut the frozen road surface EB into a rough surface state, and the cut road surface is cut. Is shaped by the subsequent blade 6. The rotation direction of the rotary cutting body 5 is set to the counterclockwise direction (direction of arrow D) in FIG. 7 so as to downcut the road surface.

As shown in FIG. 8, the blade 6 is disposed so as to be inclined so as to move backward toward the left side portion A of the work vehicle in the traveling direction of the vehicle. Therefore, the material removed by the rotary cutting body 5 is guided by the blade 6 as the work vehicle travels forward, advances to the left side portion A, and is discharged from the left end of the blade 6 to the outside (usually the roadside). In FIG. 8, reference numeral 8 is a cutting body support member which is arranged at the right end portion B of the work vehicle and which also serves as a chain cover which incorporates a chain for transmitting the rotation of the hydraulic motor 7 to the rotary cutting body 5.

[0004]

In the above-described road surface cutting device, a part of the material removed by the rotary cutting body 5 is fixedly attached to the rotary cutting body 5 and is rotated along with the rotary cutting body 5 from the front side. May be exhaled laterally. in this case,
The cutting removal material discharged to the front surface of the rotary cutting body 5 is again taken into the blade 6 side by the rotation cutting body 5, and the cutting removal material discharged to the left side portion A of the vehicle is the cutting removal discharged from the blade 6. Since it mixes with things, there is no problem if left alone.
However, the cut-out matter discharged to the right side portion B of the vehicle is deposited on the road because it cannot be taken in by the rotary cutting body 5 and the blade 6, and as the work vehicle travels forward,
As indicated by reference character C, a ridge is left on the side of the median strip of the road. Therefore, after the work vehicle 1, a worker needs to use a broom or the like to scatter the ice pieces, snow, and the like accumulated on the road.

It is an object of the present invention to provide a road surface cutting device capable of eliminating the risk that the cut-off materials such as ice pieces and snow are left on the road while being accumulated by adding a simple structure.

[0006]

1 to 3 showing an embodiment, the present invention is used by being mounted on the front surface of a work vehicle 1 in the traveling direction and used in the left-right direction of the work vehicle 1. The road surface is cut into a desired shape by the rotation of the rotary cutting body 5 extended in the vertical direction, and the material removed by the rotary cutting body 5 is guided by the subsequent guide plate 6 to one side A of the work vehicle in the left-right direction. It is applied to discharging road surface cutting equipment. Then, on the side portion B on the side opposite to the discharge side of the cutting removal material by the guide plate 6,
The above-described object is achieved by providing the deposit collapsing member 16 that collides with the road deposit C formed by the cut-out matter discharged by the rotation of the rotary cutting body 5 as the work vehicle 1 travels forward.
In the present invention, the scraping plate 16 that can slide on the road surface can be used as a deposit collapsing member in a state of being inclined so as to recede rearward in the traveling direction of the work vehicle 1 toward the center of the work vehicle 1 in the lateral direction. The scraping plate 16 is arranged ahead of the guide plate 6 in the traveling direction of the work vehicle 1. The scraping plate 16 is supported by the joints 10 to 13 that enable the work vehicle 1 to swing in the left-right direction and the vertical direction, or, as shown in FIG. It is advisable to support the shape so that it can move freely.

[0007]

When the cutting material is discharged and deposited on the side B of the guide plate 6 which is opposite to the discharge side of the cutting material, the road-deposited material C accumulates as the work vehicle 1 travels forward. It is pushed down by 16. According to the scraping plate 16 arranged in front of the guide plate 6, the road deposit C is scraped toward the center of the vehicle in the left-right direction and can be collected by the following guide plate 6. Since the on-road deposit C is once cut by the rotary cutting body 5, it can be easily crushed unlike the consolidation state such as ice burn. Therefore, even when the scraping plate 16 is supported by the joints 10 to 13 described above, or at least the lower end portion 21 is supported by the elastic member 19, the scraping plate is always supported by its own weight by overcoming the resistance when the deposit C is pushed down. It can be made to follow the road surface shape.

Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. It is not limited to.

[0009]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the embodiments of the present invention, the same components as those in the above-described conventional example are designated by the same reference numerals as those in the above-described conventional example, and the description thereof will be omitted.

First Embodiment FIGS. 1 to 3 show a first embodiment of a road surface cutting device according to the present invention. The bracket 1 is attached to the lower end portion of the cutting body support member 8 arranged on the right side portion B (see FIGS. 7 and 8) of the work vehicle.
0 is fixed. The bracket 10 supports the swinging member 12 so as to be swingable in the vertical direction by a support shaft 11 extending horizontally in the left-right direction of the vehicle. The swing member 12 is the support shaft 1.
A blade holder 14 is rotatably supported around a support shaft 13 by a bolt-integrated support shaft 13 which is orthogonal to 1.
Thus, the blade holder 14 is supported by the joint structure of the bracket 10, the support shaft 11, the swinging member 12, and the support shaft 13 so as to be swingable in the left-right direction and the up-down direction of the work vehicle 1.

A scraping blade 16 having a sliding bar 15 fixed to a lower edge portion thereof is mounted on the blade holder 14 so as to incline such that the sliding bar 15 moves backward toward the center of the vehicle in the left-right direction. . The scraping blade 16 is attached to a position projecting from the rotary cutting body 5 to the right side portion B of the work vehicle. The inclination angle of the scraping blade 16 from the vehicle traveling direction may be about 45 degrees in the horizontal state. Further, the scraping blade 16 has its lower portion bent forward in the traveling direction of the vehicle to provide a predetermined rake angle. The sliding bar 15 displaces the center of gravity of the scraping blade 16 downward and reduces the frictional resistance with the road surface to improve the followability to the road surface.

A blade holder 14 is attached to the cutting body support member 8.
Plate 17 for limiting the downward swing angle
(See FIG. 3). Although not shown in the drawing, the blade holder 1 is attached to the cutting body support member 8.
A stopper for limiting the swinging angle in the left-right direction when viewed from the front of 4 is also provided.

According to the above construction, when the work vehicle moves forward, the scraping blade 16 slides on the road surface with the sliding bar 15 at its lower end abutting the road surface. For this reason, even if the cutting removal material such as ice pieces and snow is discharged to the outside (right side portion B) of the right end surface of the rotary cutting body 5 and is temporarily deposited, the deposit C is scraped by the blade 16 Are sequentially pushed down and scraped toward the rotary cutting body 5 side. This does not allow the cuttings to build up on the road and form ridges. The deposit C, after being cut by the rotary cutting body 5, is not subjected to any compression, so that it can be easily crushed. Therefore, the scraping blade 16 does not ride on the deposit C, and the support shafts 11 and 13 are moved along with the forward traveling of the work vehicle.
It swings and swings around and always follows the road surface shape. For this reason, it is possible to take in the cut and removed material that has collapsed without leakage.

Second Embodiment FIGS. 4 and 5 show a second embodiment of the road surface cutting device according to the present invention. In this embodiment, the blade holder 14 is supported by the support shaft 13 extending in the traveling direction of the vehicle so as to be rotatable in the left-right direction of the vehicle. An inclined base plate 17 is fixed to the blade holder 14 so that the inclined base plate 17 moves backward toward the center of the vehicle in the left-right direction (downward in FIG. 4) and moves backward in the vehicle traveling direction. The lower side of the inclined substrate 17 is bent forward to give a rake angle, and a flat rubber plate 19 is attached to the lower end of the inclined substrate 17 by a bolt 18.
A flat plate-shaped scraping blade body 21 is attached to the tip of the rubber plate 19 by a bolt 20 in a state where a rake angle is given. Note that, as shown in FIG. 6, the rake angle may be provided by bending the scraping blade body 21 itself. In this embodiment, the inclined substrate 17 and the rubber plate 19 are used.
The scraping blade 22 is configured by the scraping blade main body 21.

Also in this embodiment, even if the cut-out material is discharged and accumulated on the outer side (right side portion B) of the right end surface of the rotary cutting body 5, the scraped-up blade 22 pushes the cut-off material to collapse it. It is drawn to the rotary cutting body 5 side. Due to the swinging of the scraping blade main body 21 around the support shaft 13 and the elastic deformation of the rubber plate 19, the scraping blade main body 21 can follow the road surface shape and take in the cut-out material that has been collapsed without leakage.

Instead of the scraping blades 16 and 22, a broom or a brush may be attached to the cutting body support member 8 or the like to sweep the road deposits by the forward traveling of the work vehicle.

In the above embodiment, the blade 6 is the guide plate, the scraping blades 16 and 22 are the deposit collapsing members,
The rubber plate 19 constitutes an elastic member.

[0018]

As can be understood from the above description, according to the road surface cutting device of the present invention, the cutting removal material discharged and deposited on the side portion of the guide plate opposite to the discharging side of the cutting removal material is accumulated. Since the collapsing member collapses as the work vehicle moves forward, the addition of a simple structure eliminates the possibility of cutting debris such as ice chips and snow being left on the road. it can. Since the road deposit is once cut by the rotary cutting body and can be easily crushed unlike the consolidation state such as ice burn, it supports the scraping member by the joint, or at least the scraping member. Even if only the lower end portion is supported by the elastic member, it is possible to overcome the resistance at the time of collapsing the deposit and make the scraping plate always follow the road surface shape by its own weight, and to collect the cutting removal product without leakage.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing a first embodiment of a road surface cutting device according to the present invention.

FIG. 2 is an enlarged partial cross-sectional plan view of essential parts showing a first embodiment of the road surface cutting device according to the present invention.

FIG. 3 is a side view of an essential part showing a first embodiment of a road surface cutting device according to the present invention.

FIG. 4 is a plan view of an essential part showing a second embodiment of the road surface cutting device according to the present invention.

FIG. 5 is an end view of essential parts showing a second embodiment of the road surface cutting device according to the present invention.

FIG. 6 is an end view of essential parts showing a modified embodiment of the road surface cutting device according to the present invention.

FIG. 7 is a side view showing a state in which the road surface cutting device is mounted on the wheel loader.

8 is a view from the direction of the arrow VIII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work vehicle 2 Lifting device 3 Frame 5 Rotating cutting body 6 Blade 8 Cutting body supporting member 14 Blade holder 16,22 Scraping blade 17 Inclined substrate 18 Rubber plate 21 Scraping blade main body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Tamai 650 Jinrachicho, Tsuchiura City, Ibaraki Prefecture Tsuchiura Plant, Hitachi Construction Machinery Co., Ltd. Ceremony Company Tsuchiura Factory

Claims (4)

[Claims] 1. A road surface is cut into a desired shape by rotation of a rotary cutting body which is mounted on a front surface of a working vehicle in a traveling direction and is extended in the left-right direction of the work vehicle. In a road surface cutting device that guides and discharges the cut removal material by a subsequent guide plate to one side in the left-right direction of the work vehicle, the rotary cutting is provided on the side opposite to the discharge side of the cut removal material by the guide plate. A road surface cutting device, comprising: a deposit collapsing member for collapsing a road deposit due to a cut-out substance discharged by rotation of a body as the work vehicle travels forward. 2. The deposit collapsing member is a scraping plate slidable on a road surface in a state of being inclined so as to recede rearward in the traveling direction of the work vehicle as it goes to the center side in the left-right direction of the work vehicle. The road surface cutting device according to claim 1, wherein the scraping plate is arranged ahead of the guide plate in the traveling direction of the work vehicle. 3. The road surface cutting device according to claim 2, wherein the scraping plate is supported by a joint that allows the work vehicle to swing in the left-right direction and the vertical direction. 4. At least a lower end portion of the scraping plate,
The road surface cutting device according to claim 2, wherein the road surface cutting device is supported by an elastic member so as to be free to follow the road surface shape.