JP7158767B1 - Chip discharge device - Google Patents

Abstract

[Problem] To be attached to a road milling machine used for pavement road repair work, etc., and by discharging cutting chips generated when cutting the paved road surface to the side of the vehicle, a small construction that a vehicle carrying cutting chips cannot enter. It can also be used in the field (road milling field), reducing the cost. A shavings discharging device 1 for discharging shavings generated when a pavement road surface is cut by a road milling machine 20 to the side of the road milling machine, and is attachable to and detachable from the rear surface of the road milling machine. A box body 5 is mounted to receive cutting chips from the road milling machine, a cutting chip inlet 2 formed on the front surface of the box body, and a cutting chip formed on one side of the box body. Equipped with a discharge port 3 and an inclined floor plate 9 provided at the bottom of the box body for guiding cutting wastes thrown in from the input port to the discharge port by their own weight.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swarf discharging device, and is particularly used for pavement road repair work, etc., and discharges shavings generated when a paved road surface is cut by a road milling machine to the side of the road milling machine without scattering them. It relates to a chip discharge device capable of

A self-propelled cutting machine, which is generally used for pavement road repair work, etc., consists of a cutting drum that is installed under the vehicle body and that cuts the paved road surface by rotating at high speed, and the pavement road scrap material that is cut by this cutting drum. and a belt conveyor for carrying out forward in the running direction of the vehicle body.
A cutting bit is provided on the outer peripheral surface of the cutting drum, and the cutting drum is rotated at high speed while the vehicle body is driven to cut the paved road surface. The pavement road waste material generated by this cutting is conveyed from the cutting drum to a belt conveyor, and is further conveyed from the belt conveyor to a vehicle such as a truck to remove the pavement road waste material cut from the pavement road surface. .

The present applicant discloses a self-propelled cutting machine in Patent Document 1.
FIG. 9 is a side view of the self-propelled cutting machine 60 disclosed in Patent Document 1. FIG. This self-propelled cutting machine 60 has a cutting drum 62 that can be rotated at high speed by an engine 61, and the cutting drum 62 cuts the paved road to be repaired.

As shown in the figure, this self-propelled cutting machine 60 includes a first belt conveyor 64 for conveying the pavement road scrap (cutting waste) C cut by a cutting drum 62 from a cutting drum chamber 63, followed by a second conveyor belt. A belt conveyor 65 is provided, and the pavement road waste material C conveyed by the second belt conveyor 65 is carried out to the transport vehicle 70. - 特許庁

Also, the dust generated in the cutting drum chamber 63 is collected by the dust collection device 66 . The dust collecting device 66 discharges the air, which has been dust-removed by the cyclone section 67, from the swirling flow forming tower 68 as a swirling flow, and the swirling flow of the air discharged from the swirling flow forming tower 68 is It sprinkles water in the form of mist. According to this dust collection device 66, fine dust can be collected, and a conventional filter becomes unnecessary, and its replacement and maintenance work become unnecessary.

By the way, the self-propelled cutting machine 60 shown in Patent Document 1 is a large vehicle, and the pavement road waste material C cut by this cutting machine 60 is conveyed forward from the cutting drum chamber 63 by the belt conveyors 64 and 65, and is transferred to the truck. It is accommodated in the loading platform of a transportation vehicle 70 such as.
For this reason, at a small construction site (road surface cutting site) where a vehicle for transporting cutting chips cannot enter due to a narrow road, etc., the transport vehicle 70 cannot be placed in front of the self-propelled cutting machine 60, and the self-propelled cutting machine cannot be used. There was a problem that the cutting by 60 could not be performed or the cut waste could not be carried out.

As a solution to such problems, Patent Document 2 discloses a compact road milling machine that discharges chips to the side of a vehicle. FIG. 10 is a side view of the road milling machine disclosed in Patent Document 2, and FIG. 11 is a plan view thereof.
This road milling machine 80 includes a self-propelled vehicle 81 , a cutting unit 82 mounted on the bottom surface of the self-propelled vehicle 81 , and a screw conveyor 83 for discharging chips cut by the cutting unit 82 . The self-propelled vehicle 81 has rear wheels 85 and front wheels 86 and is driven by an engine. In FIG. 11, the arrow indicates the traveling direction of the self-propelled vehicle 81. As shown in FIG.

As shown, a cutting unit 82 is provided on the bottom surface of the self-propelled vehicle between the rear wheels 85 and the front wheels 86 . The cutting unit 82 has a cutting drum 87 with a rotating shaft extending in the vehicle width direction. The cutting drum 87 is rotationally driven by a motor (not shown) and cuts the road surface with a plurality of bits 87a provided on its surface.
The screw conveyor 83 is arranged between the rear wheel 85 and the cutting unit 82 so that the conveying direction extends in the vehicle width direction as shown in FIG. .

In the road milling machine 80 configured as described above, the cutting chips cut by the cutting drum 87 of the cutting unit 82 while the self-propelled vehicle 81 is running are conveyed by the screw conveyor 83 to the side (right side) of the vehicle, Manually collect the ejected chips. As a result, it can be used in a small construction site (road surface cutting site) where vehicles for transporting chips cannot enter, and cutting work can be efficiently performed even in such a small construction site.

Japanese Patent No. 6499994 JP 2016-211154 A

However, in the road milling device disclosed in Patent Document 2, the structure of the screw conveyor 83 for conveying the chips is complicated, and there is a problem that the cost of the device increases.
Moreover, there is a technical problem that the screw conveyor 83 is likely to be clogged by large cutting chips. There was a problem with the cause.

The present invention has been made under such circumstances, and its object is to remove cutting chips generated when a paved road surface is cut by being attached to a road milling machine used for paved road surface repair work and the like. To provide a chip discharging device which can be used in a small construction site (road surface cutting site) into which a cutting chip transport vehicle cannot enter, and which can reduce the cost by discharging the chips to the side of a vehicle. .

A cutting waste discharging device according to the present invention, which has been devised to solve the above-mentioned problems, is a cutting waste discharging device for discharging cutting waste generated when a paved road surface is cut by a road milling machine to the side of the road milling machine. A box body detachably attached to the rear surface of the road milling machine and into which chips from the road milling machine are introduced; a cutting chips inlet formed in the front face of the box body; An outlet for cutting chips formed on one side surface of a box body, and an inclined floor plate provided at the bottom of the box body for guiding the chips introduced from the inlet to the outlet by its own weight. It is characterized by

In addition, it is desirable to provide an inclined wall plate on the side surface inside the box main body for repelling cutting chips thrown in from the inlet and guiding them to the outlet.
Moreover, it is desirable to provide rubber plates respectively provided on the side surface and the ceiling surface of the box body.
A pair of box bodies are provided in which at least the discharge port and the inclined floor plate are formed symmetrically with respect to the traveling direction of the road milling machine, and one of the pair of box bodies is the road milling machine. preferably attached to the rear of the
Further, it is desirable that the cylinder mechanism be connectable to a cylinder mechanism provided in the road milling machine, and be vertically movable with respect to the road milling machine by the cylinder mechanism.

According to such a configuration, the entire length of the chip discharge device is short, and the discharge port is provided on the side. It can be used even at (cutting site).
In addition, since the upper part of the side surface and the top surface are closed in the chip discharging device, the cutting chips are not scattered and can be discharged to the side of the road milling machine from the discharge port. .
Moreover, since it can be realized with a relatively simple configuration, the cost of the device can be greatly reduced and maintenance can be facilitated as compared with conventional conveyor devices and the like.

According to the present invention, it is attached to a road milling machine used for pavement road repair work, etc., and discharges cutting chips generated when cutting the paved road surface to the side of the vehicle, so that the vehicle carrying the cutting chips can enter. It is possible to provide a chip discharging device that can be used at a small construction site (road surface cutting site) where it cannot be used, and that can reduce the cost.

FIG. 1 is a side view of a road milling machine equipped with a chip discharge device according to the present invention. 2 is a plan view of the road milling machine of FIG. 1; FIG. FIG. 3 is a perspective view of a chip discharge device according to the present invention. FIG. 4 is a perspective view of the chip discharging device of FIG. 3 as seen from the other direction. 5 is a side view showing the inside of the chip discharging device of FIG. 3. FIG. FIG. 6 is a plan view of the chip discharging device of FIG. 3; FIGS. 7A to 7C are perspective views for explaining an example of the connection structure between the road milling machine and the chip discharging device. 8(a) and 8(b) are a side view and a plan view showing a modification of the chip discharging device according to the present invention. FIG. 9 is a side view of a conventional self-propelled cutting machine. FIG. 10 is a side view of another conventional road milling machine. 11 is a plan view of the road milling machine of FIG. 10; FIG.

Hereinafter, a chip discharging device according to the present invention will be described. FIG. 1 is a side view of a road milling machine equipped with a chip discharging device according to the present invention, and FIG. 2 is a plan view of the road milling machine of FIG. The chip discharging device according to the present invention is a device for discharging the cutting chips generated when the road milling machine cuts the road surface to the side of the road milling machine.
First, a road milling machine to which the chip discharging device of the present invention can be attached will be described with reference to the drawings. A road milling machine 20 shown in FIG. 1 includes a driver's seat 22 having a steering wheel 28 and the like provided at the rear of a vehicle body 21, an engine (not shown) as a driving device provided in the vehicle body 21, and the engine. and a traveling means 24 such as a driven tire.

An alternator 25 is arranged on the side of the engine to generate power for electrical components using rotation of the engine as a power source. The alternating current generated by the alternator 25 is converted into direct current and stored in a battery (not shown), converted into alternating current by an AC/DC inverter (not shown), and supplied to the main power supply provided near the driver's seat 22 . Power can be supplied from the operation panel 26 .

Furthermore, the road milling machine 20 includes a cutting drum 30 provided with a large number of cutting bits in the width direction at the rear lower part of the vehicle body 21, and covers the front part, the upper part, the front and rear left and right parts of the cutting drum 30, and a cover plate 32 forming a cutting drum chamber 31 . In this manner, the cover plate 32 covers the upper portion, the front, rear, left and right portions of the cutting drum 30, and the cutting drum chamber 31 is substantially sealed, so that the scattering of dust from the cutting drum chamber 31 to the outside is suppressed. be.

The cutting drum 30 is rotatable at high speed by an engine (not shown) and is constructed to cut the paved road to be repaired. The direction of rotation of the cutting drum 30 is basically set counterclockwise in FIG. 1 in the direction of the arrow.
An opening 21a is provided in the rear surface of the vehicle body 21, and the opening 21a is formed at a position facing the upper rear portion of the cutting drum 30. As shown in FIG.
Chips cut by the cutting drum 30 are discharged outside (toward the rear of the vehicle) from the opening 21a by centrifugal force accompanying the rotation of the cutting drum 30 .

A frame body 27 is provided along the periphery of the opening 21a, and the frame body 27 can be vertically moved by a cylinder mechanism 33 with respect to the opening 21a. That is, one end of the rod 33a is connected to the upper side of the frame 27, and the other end is connected to the cylinder main body 33b so as to be vertically movable.

The chip discharge device 1 according to the present invention is attached to the frame 27 so as to close the opening 21a at the rear portion of the vehicle body 21 as shown. As a result, the chip discharging device 1 can move up and down with respect to the opening 21a, and the mutual height positions can be adjusted.
The chips cut by the cutting drum 30 as described above are discharged to the outside through the opening 21 a , and the chips are thrown into the chip discharging device 1 .

3 is a perspective view of the chip discharger 1, and FIG. 4 is a perspective view of the chip discharger 1 viewed from the other direction. 5 is a side view of the chip discharger 1 as seen from the chip inlet side, and FIG. 6 is a plan view of the chip discharger 1. As shown in FIG. It should be noted that the traveling direction of the vehicle body 21 is y, and the vehicle width direction is x. Also, the side of the inlet 2 is called the front side, and the opposite side is called the rear side.

This cutting waste discharging device 1 is provided with a hollow box body 5 formed of an iron plate or the like. and a discharge port 3 for shavings. The inlet 2 is attached in alignment with the position of an opening 21 a provided on the rear surface of the vehicle body 21 . In the present embodiment, the discharge port 3 is provided on the right side surface (so as to discharge in the x direction) with respect to the traveling direction (y direction) of the vehicle body 21 .
Further, the box body 5 has a top plate 5a, a bottom plate 5b, a side plate 5c formed with the discharge port 3, side plates 5d and 5e opposite to the discharge port 3, and a front side plate 5f.

As shown in the figure, the side plate 5e (slanted wall plate) on the side opposite to the discharge port 3 is tapered so that the front end side of the box body 5 becomes gradually narrower in plan view (so that the length in the x direction becomes shorter). It is inclined toward the discharge port 3 side toward the side. As a result, when cutting chips introduced from the inlet 2 hit the side plate 5e, they bounce back toward the outlet 3. As shown in FIG. Further, as shown in FIG. 5, on the bottom plate 5f is provided an inclined floor plate 9 made of an iron plate or the like, which is inclined downward toward the discharge port 3, so that cutting chips roll toward the discharge port 3 by their own weight. , or is designed to slide down.

Further, as shown in FIGS. 3 and 4, an opening 6 is formed on the side of the top plate 5a. This opening 6 is closed with a thick (for example, 5 mm to 12 mm) rubber plate 7 . One side of the rubber plate 7 is connected to the top plate 5a by screws or the like, and the connecting portion can be used as a fulcrum to be lifted by the operator's hand. ing. This makes it possible to look into the interior and visually confirm the internal situation.

Further, as shown in FIG. 3, the upper portion of the discharge port 3 is also covered with a rubber plate 8 having the same thickness as the rubber plate 7. As shown in FIG. The upper side of the rubber plate 8 is connected to the side plate 5c by screws or the like. As shown in the figure, the height dimension H of the discharge port 3 is adjusted by the length of the rubber plate 8 in the vertical direction. The height dimension H of the discharge port 3 is set so as to make the distance of the chips C ejected from the discharge port 3 substantially constant, so that the width W of the chips C discharged from the discharge port 3 in the x direction is approximately can be constant.
By discharging the cutting chips C to the side of the road milling machine 20 with a constant width W in this way, it becomes possible for the operator to efficiently collect the cutting chips C later with a hydraulic shovel, a scoop, or the like.
On the other hand, when the cutting chips C are left on the spot (on the cutting surface) without providing the cutting chips discharging device 1 in the road milling machine 20, the cutting chips C scatter on the cutting surface, and the cutting chips C cannot be collected efficiently.
In addition, if cutting chips are left on the spot (on the cutting surface), the boundary between the cutting surface and the non-cutting surface becomes unclear. (not shown) will have difficulty detecting the edge of the cutting surface, making it difficult to move the road milling machine 20 parallel along the edge of the cutting surface.

A carrying-out plate 11 made of an iron plate or the like extends laterally from the lower side of the discharge port 3, and the cutting waste C is designed to derive By setting the length of the carry-out plate 11 in the x direction, it is possible to adjust the discharge position onto the road surface.

Further, as shown in FIG. 5, a rubber plate 10 having the same thickness as the rubber plate 7, for example, is erected in a curved state inside the box body 5. As shown in FIG. As shown in FIG. 6, the rubber plate 10 is fixed to the front side plate 5f, the side plate 5e, and the side plate 5d by screwing or the like in a curved state.
As described above, inside the box main body 5, the rubber plate 7 is provided on the top plate 5a side, the rubber plate 10 is provided on the side surface, and the rubber plate 8 is provided on the upper part of the discharge port 3. Chips thrown in through the shavings strike the rubber plates 7, 8 and 10, at which time the impact is softened so that they do not ricochet greatly, and the impact noise is greatly reduced. Therefore, deformation of the box body 5 can be suppressed.

Also, the chips C introduced from the inlet 2 collide with the rubber plate 10 and are discharged from the outlet 3 as described above. In other words, the distance from the input port 2 to the deepest part (the front side plate 5f) of the rubber plate 10 is set to a distance at which the input chips C hit. That is, since the chip discharging device 1 has a short overall length L (length in the y direction) and is provided with a discharge port 3 on the side, a large transport vehicle for transporting the cutting chips C can be used. It can be used even in a small construction site (cutting site) where it is not possible.
In addition, since the upper part of the side surface and the top surface are closed in the chip discharging device 1, the chip C does not scatter, and the chip C is discharged from the discharge port 3 to the side of the road milling machine 20. Ejected.

Further, as shown in FIGS. 3 and 4, a carrying string 13a is connected to the top plate 5a, and a handle 13b is connected to the carrying string 13a.
As a result, an operator can easily move the chip discharging device 1 by grasping the handle 13b. For example, after the operation of the road milling machine 20 is stopped, the chips remaining in the chip discharger 1 can be transported to a desired location and discarded.

Next, an example of a connection structure between the road milling machine 20 and the chip discharging device 1 will be described. FIG. 7A is a perspective view partially showing the rear surface of the vehicle body 21 of the road milling machine 20. FIG.
As described above, the rear surface of the vehicle body 21 is provided with the opening 21a. A frame 27 is arranged along the periphery of the opening 21a, and as described above, the frame 27 is vertically movable by the cylinder mechanism 33. As shown in FIG.
Guide plates 27a and 27b are provided on the side and lower sides of the frame 27 so as to protrude rearward. A flange 27c formed with a through hole 27c1 is provided at the center of the upper side of the frame 27 so as to protrude rearward.

The operator holds the handle 13b and lifts the chip discharging device 1, and as shown in FIG. Install as shown.
In the box body 5 of the chip discharge device 1, a through hole 5a1 is formed in the center of the top plate 5a. Then, as shown in FIG. 7C, the position of the through hole 27c1 of the flange 27c and the position of the through hole 5a1 on the side of the top plate 5a are configured to match.
Then, as shown in FIG. 7(c), the chip discharging device 1 is completely attached to the road milling machine 20 by inserting fixing pins 12 such as iron bars into the through holes 27c1 and the through holes 5a1.

As described above, according to the embodiment of the present invention, the entire length L (length in the y direction) of the chip discharging device 1 is formed short, and the discharge port 3 is provided on the side. It can be used even at a small construction site (cutting site) where a large transport vehicle for transporting scraps cannot be used.
In addition, since the upper part of the side surface and the top surface are closed in the chip discharge device 1, the chip is not scattered, and the chip is discharged from the discharge port 3 to the side of the road milling machine 20. be able to. Since the cutting chips are discharged to the side of the road milling machine 20 from the discharge port 3, the worker can efficiently collect the cutting chips C with a hydraulic shovel, a scoop, or the like. Further, when the cutting surface is further cut, a sensor (not shown) of the road milling machine 20 can detect the edge of the cutting surface, and the road milling machine 20 can be moved in parallel along the edge of the cutting surface. can.
Moreover, since it can be realized with a relatively simple configuration, the cost of the device can be greatly reduced and maintenance can be facilitated as compared with conventional conveyor devices and the like.

In the above-described embodiment, the discharge port 3 is provided on the right side surface of the vehicle body 21 with respect to the traveling direction, but the present invention is not limited to this form. .
For example, as shown in FIGS. 8(a) and 8(b), it may be provided on the left side of the vehicle main body 21 with respect to the direction of travel (the front side of FIG. 8(a) is the direction of travel of the vehicle).
In this case, as shown in FIG. 8(a), the discharge port 3 and the structure shown in FIG.
In addition, as shown in FIG. 8B, when the position of the discharge port 3 is far from the left side of the vehicle, the x-direction length of the carry-out plate 11 may be increased for adjustment.
Also, a pair of box bodies 5 in which at least the discharge port 3 and the inclined floor plate 9 are formed symmetrically with respect to the traveling direction of the road milling machine are prepared in advance. may be attached to the rear face of the road milling machine 20.

REFERENCE SIGNS LIST 1 chip discharging device 2 inlet 3 outlet 5 box body 5a top plate 5a1 through hole 5b bottom plate 5c side plate 5e side plate (inclined wall plate)
5f Front side plate 6 Opening 7 Rubber plate 8 Rubber plate 9 Inclined floor plate 10 Rubber plate 11 Carry-out plate 12 Fixing pin 13a Hand strap 13b Handle 20 Road mill 21 Vehicle body 21a Opening 27 Frame 27c Frame 27c1 Through hole 33 Cylinder Mechanism 33a Rod 33b Cylinder body C Chips

Claims (5)

A cutting waste discharging device for discharging cutting waste generated when a paved road surface is cut by a road milling machine to the side of the road milling machine,
a box body detachably attached to the rear surface of the road milling machine, into which chips from the road milling machine are thrown;
a cutting waste inlet formed on the front surface of the box body;
a discharge port for shavings formed on one side surface of the box body;
an inclined floor plate provided at the bottom of the box main body for guiding cutting waste introduced from the inlet to the outlet by its own weight;
A cutting waste discharge device characterized by comprising: On the side surface inside the box body,
2. The chip discharging device according to claim 1, further comprising an inclined wall plate that guides cutting chips to said discharge port by repelling them. 3. The chip discharging device according to claim 1, further comprising rubber plates respectively provided on the side surface and the ceiling surface of the box body. a pair of box bodies in which at least the discharge port and the inclined floor plate are formed symmetrically with respect to the traveling direction of the road milling machine;
4. The chip discharging device according to claim 1, wherein one of said pair of box bodies is attached to the rear surface of said road milling machine. 5. The road milling machine according to any one of claims 1 to 4, wherein the road milling machine is provided so as to be connectable to a cylinder mechanism provided in the road milling machine, and is vertically movable with respect to the road milling machine by the cylinder mechanism. The chip discharge device described in .

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