JP2763509B2 - Excavator for paved roads - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavation work vehicle for a pavement road, and more particularly, to a method for efficiently exfoliating a repaired portion of a surface layer having a crack or the like on a pavement road, and efficiently recovering excavation caused by the exfoliation. However, due to this, the excavated material remains at the repaired portion, and relates to a technique for eliminating a great amount of labor and manpower for removing the excavated material.

[0002]

2. Description of the Related Art On paved roads such as expressways,
Its surface is asphalt pavement. In this asphalt pavement, cracks are formed due to deterioration due to life and excessive load, and if rainwater enters from this crack, asphalt deterioration is promoted, and rainwater easily penetrates to the road base, weakening the road base. This deforms the road base and causes large irregularities on the road surface, which causes a problem in running, particularly in high-speed running. Such cracks and the like are generated in a substantially straight line along the traveling route even if the meandering or the skew occurs to some extent.

Conventionally, when repairing a road, a rotary excavator mounted on a working vehicle has to be provided with a small width along a crack formed on a surface layer and a whole width including a defective portion. It excavates while separating the surface layer, collects the crushed material in the work vehicle, and transfers it to a large dump truck that accompanies it. By the way, as shown in FIG. 14, a conventional structure for collecting crushed materials in a conventional pavement road excavating work vehicle includes a rotary cutter 3 in which a large number of excavating claws 3B are planted on a rotary drum 3A.
C is mounted in a box-shaped casing 3D having an open bottom, and a rotary cutter 3C protruding from below the casing 3D excavates a pavement road surface and discharges its crushed material forward and upward. The crushed material sent out from the outlet 4C formed in the front wall of the above is carried out by carrying-out means 5 such as a conveyor, and is carried out of the vehicle.

[0004]

However, in such a structure, the crushed material is blown and packed on the front wall portion of the casing 3D, and the crushed material reaching the discharge port 4C is collected in the work vehicle. Since it is in the form, the outlet 4C
Crushed material that does not reach the bottom of the casing 3D falls down and remains at the excavation point on the road surface, and such residual crushed material is swept with a shovel truck or with a broom with many hands. It has to collect and collect, which requires a great deal of labor and labor, and also requires watering with a watering vehicle to suppress the generation of dust associated with cleaning with a broom.

The present invention has been made in view of such a problem, and an object of the present invention is to efficiently remove crushed material from a repaired portion of a surface layer having a crack or the like on a pavement road and excavated. It is an object of the present invention to provide an excavator for a pavement road which can collect and thereby leave crushed material at an excavation site and eliminate the need for many people to clean these residues.

[0006]

In claim 1 Means for Solving the Problems], a rotary excavation emission means 3 for emitting a crushed material produced by drilling to form a drilling groove b in the pavement surface in front above the running direction, the rotary excavation Rotate in front of release means 3
It has a transfer and take-out means 4 for receiving the crushed material excavated by the excavation and discharge means 3 and forcibly transferring the crushed material in the vehicle width direction and collecting the crushed material at the take-out port 4c, and a carrying-out means 5 to carry out the crushed material at the take-out port 4c to the outside. , The rotary excavation release means 3 is
It is formed in a small width and can move freely in the width direction of the traveling vehicle body 1.
It is characterized by comprising.

According to the second aspect, the transfer / extraction means 4
Is provided over substantially the entire width in the vehicle width direction, and is configured to forcibly transfer the crushed material received from the rotary excavation discharge means 3 from both ends in the vehicle width direction to a substantially central portion. is there.

[0008] In the third aspect, the rotary excavation discharge means 3
Is characterized in that it is constituted by a rotary cutter 3c in which a large number of excavating claws 3b are implanted on a rotary drum 3a. In claim 4 , the transfer and take-out means 4 comprises a cover 4a having a substantially cylindrical cross section, and a ribbon screw 4b rotatably disposed behind the cover 4a. An outlet 4c for discharging air is formed substantially at the center in the vehicle width direction.

According to a fifth aspect of the present invention, the rotary excavation discharge means 3
The transfer and take-out means 4 is configured to be vertically movable.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall plan view, and FIGS. 2 and 3 are overall side views. The traveling vehicle body 1 is equipped with wheels 6 driven by a mounted prime mover, and can be driven as a general vehicle by operating a steering wheel with an operation unit. For example, four guide legs 9 are erected on the traveling vehicle body 1, and the lifting base 10 can be raised and lowered by hydraulic drive via the guide legs 9. The lifting base 10 includes
A rotary excavation and discharge unit 3, a transfer and extraction unit 4 and an unloading unit 5, which sequentially exfoliate and excavate the asphalt layer a and the base layer of the surface layer of the pavement road and sequentially extract the crushed material, are mounted, and a large It can be transferred to a dump truck while traveling. Hereinafter, the configurations of various means will be described in detail.

FIGS. 5 to 8 show the rotary excavating and discharging means 3. The rotary excavating and discharging means 3 includes a rotary cutter 3c having a rotary drum 3a and a plurality of helical strips with excavating claws 3b.
Is configured. This rotary cutter 3c has its horizontal horizontal axis 2 rotatably mounted on a bearing portion of a housing 3d shown in FIG. 6, and is connected to a speed reducer 3e provided in the housing 3d, and is mounted on the lifting base 10 side. Hydraulic oil from the hydraulic drive mechanism is supplied to a hydraulic motor mounted on the housing 3d to rotate the rotary cutter 3c by about 100%.
0r. p. It can be rotated at a high speed of about m. The rotary excavating and discharging means 3 has its housing 3d.
Is mounted on the rear part of the elevating base 10 through the lower part, and lowers the elevating base 10 with respect to the traveling vehicle body 1 to lower the rotary cutter 3c below the road surface level. The high-speed rotation excavates the asphalt layer a and the ground layer of the surface layer of the pavement road, and crushes the crushed material having a diameter of about 20 mm in the entire width of the rotary cutter 3c along with the excavation. So that it can be released.

FIGS. 10 to 12 show the transfer / unloading means 4 and the lifting / lowering base 10 in front of the rotary excavation / discharge means 3.
It is installed in. The transfer and take-out means 4 includes a cover body 4a having a substantially arc-shaped cross section, and a ribbon screw 4b disposed behind the cover body 4a so as to be driven and rotatable. An outlet 4c for discharging the crushed material is formed in the cover 4a at a substantially central portion in the vehicle width direction. The cover 4a and the ribbon screw 4b extend over substantially the entire width of the vehicle. The ribbon screw 4b is held on the rotary shaft 4d in a spiral manner by a stay 4e at an interval, and the crushed material from the rotary cutter 3c is injected into any part of the long ribbon screw 4b. With the rotation of the ribbon screw 4b, the ribbon is transferred toward the center,
It can be collected and taken out to the outlet 4c. The driving of the ribbon screw 4b is also performed by a hydraulic motor.

Cylinders 17, 17 are interposed between the transfer / extraction means 4 and the elevating base 10, and the cylinders 17, 17
The transfer and take-out means 4 is moved up and down by the expansion and contraction of 17, so that the vertical position of the transfer and take-out means 4 with respect to the rotary excavation and discharge means 3 fixed to the elevating base 10 can be changed. When the transfer and take-out means 4 is moved up and down, the cover 4a of the transfer and take-out means 4 slides on the sliding edge S shown in FIG. As described above, since the transfer / extraction unit 4 is configured to be freely changeable in the vertical position, the discharge direction of the crushed material of the rotary excavation / discharge unit 3 due to the change in the depth of the excavation groove b by the rotary excavation / discharge unit 3 is changed. The change can be easily dealt with, and the crushed material discharged from the rotary excavation discharging means 3 can be satisfactorily received by the transfer / extracting means 4, so that the recovery efficiency of the crushed material can be further improved.

The housing 3d of the rotary excavating and discharging means 3
Excavation is performed on the left and right portions of the crack including the crack generated on the pavement road, which is sufficiently smaller than the vehicle width, for example, about 400 mm. As shown in FIG. 13, both side surfaces of the excavation groove b excavated to a small width as described above are cut into a vertical surface.
When both sides are excavated on a tapered surface, and when excavated diagonally to become a tapered surface, the joint area is increased by the tapered surface, and the existing old road portion and the excavation groove b are filled and repaired. It is possible to increase the joining strength of the new repaired part. The excavation groove b may be excavated in a plane so as to cover the entire vehicle width.

[0015] The housing 3d of the rotary excavating and discharging means 3 comprises:
The housing 3d is slidably mounted on slide rails 11, 11 on the front and rear sides of the lifting base 10, and both ends of the housing 3d are connected to a chain 12 as shown in FIG. The sprocket 13 is hydraulically driven via the hydraulic motor 16 by the operation of the worker performing the operation, and the wound chain 12 is reciprocated,
The rotating excavation discharging means 3 is moved to an arbitrary position in the vehicle width direction.
The excavation position can be changed. As described above, by shifting the rotary excavation / release means 3 in the vehicle width direction, it is possible to easily follow the meandering of the cracks on the surface layer of the road, and excavation along the cracks can be performed in one run. .

A rear plate 3g attached to the rear of the housing 3d of the rotary excavation / discharge means 3 is lifted up and down by a cylinder 3i and opened and closed, so that the excavation claws 3b of the rotary excavation / discharge means 3 can be easily replaced. In addition, the crushed material is prevented from remaining outside the housing 3d by the lower rear plate 3g. A lock 3k is provided on the housing 3d so as to be rotatable about the pin 3m. The lock 3k is rotated by expansion and contraction of the cylinder 3h, so that the lock receiving recesses 11a. The rotary excavating and discharging means 3 is positioned in the vehicle width direction. Excavation depth detection plates 3j are held on the left and right sides of the housing 3d via guide rollers 3n so as to be able to move up and down, and the digging depth detection plates 3j are provided to be urged to descend by their own weight. , Stopper 3p formed on excavation depth detection plate 3j
By contacting with the guide roller 3n, further lowering can be prevented. The excavation depth detection plate 3j is configured to detect the amount of the rise, and the excavation depth by the rotary excavation discharge unit 3 can be detected based on the detected increase amount. That is, FIGS. 2 and 3 show a state in which the excavation depth detection plate 3j is lowered to the maximum with respect to the housing 3d,
In this state, the elevating base 10 is lowered, and the excavation depth detecting plate 3j which is in contact with the road surface rises with the excavation of the road surface by the rotary excavation discharging means 3, and the amount of the rise is detected, and the excavation depth is reduced. That is to be detected. In this way, the setting of the excavation depth can be changed. The excavation groove b excavated in this way is filled with the foundation layer and the asphalt layer a, and the road surface is repaired.

An unloading conveyor 14 serving as unloading means 5 is provided in front of an unloading port 4c formed in the cover 4a of the unloading and unloading means 4. At the end of the unloading conveyor 14, the swing angle is changed. Transfer conveyor 15 made freely
The crushed materials discharged one after another from the outlet 4c are received and carried out by the carry-out conveyor 14, transferred to the transfer conveyor 15, and transferred to the accompanying large dump truck. I can do it.

The excavation groove b may be used as a wiring groove for burying an optical fiber cable or the like. In addition, although the ribbon screw 4b was used as the transfer and take-out means 4, a conveyor may be used. Further, the rotary excavation discharging means 3 may be provided over the entire vehicle width.

[0019]

According to the first aspect of the present invention, there is provided a rotary excavation discharging means for forming a digging groove on a pavement road surface and discharging crushed material generated by digging upward and forward in a traveling direction; Since it is provided with a transfer taking-out means forcibly transferring and collecting at a take-out port, and a carrying-out means for carrying out the crushed material at the take-out port to the outside, the excavated crushed material is separated by the high speed rotation of the rotary excavation / discharge means, and the excavated crushed material is moved forward. It is discharged upward, these crushed materials are received by the transfer and extraction means in the front, forcibly transported to the discharge port, and almost all the crushed materials generated by high speed rotation by the rotary excavation discharge means can be sent to the discharge port. In this way, almost all the crushed material can be recovered in this way, and as before, the crushed material is packed toward the inside front of the casing while flying toward the outlet,
Compared with the method of collecting the material that overflows to the discharge port, the efficiency of collecting crushed material can be greatly increased, a large amount of crushed material can be avoided, and the residue can be removed using a shovel, In addition, the work of sweeping and collecting with a broom can be avoided, and a lot of labor and manpower can be reduced.In addition, the work of watering with a water truck can be avoided, and the workability of repair work on the highway can be greatly improved. There is an advantage that you can. Only
Also, the rotary excavation release means is formed to be narrower than the traveling vehicle body.
It is made to be movable in the width direction of the traveling body,
The rotating excavation release means is moved in the vehicle width direction with respect to the traveling body.
The excavation position can be changed.
It is not necessary to determine the traveling position of the traveling body, for example, the lane
Rotating excavation for repairing highway
The means adjusts the traveling body to the roadside while adjusting to the desired excavation position.
To open the lane for driving
It has the advantage of being particularly advantageous in repairing roads, etc.
You.

According to a second aspect of the present invention, the transfer and take-out means includes:
The crushed material is provided over substantially the entire width in the vehicle width direction, and is configured to forcibly transfer the crushed material received from the rotary excavation and discharge means from both ends in the vehicle width direction to a substantially central portion. Received over the entire width in the width direction, can be forcibly transported toward the center of the vehicle width direction and collected, and can collect crushed materials well regardless of the change in the position of the rotating excavation discharge means in the vehicle width direction This makes it possible for the excavator to run at a fixed position, which is advantageous for excavation work on a highway or the like.

[0021]

According to the third aspect of the present invention, the rotary excavating and discharging means is constituted by a rotary cutter in which a large number of excavating claws are planted on the rotary drum, so that excavation and crushed material can be satisfactorily discharged forward. As described in the first aspect , there is an advantage that the configuration for shifting the rotary excavation discharge means in the vehicle width direction can be easily configured. In claim 4 , the transfer and take-out means comprises a cover body having a substantially cylindrical cross section and a ribbon screw rotatably disposed behind the cover body, and a take-out port for discharging crushed material to the cover body. Is formed at substantially the center in the vehicle width direction, so that the leading end of the unloading means is located at the position of the unloading port, and it is easy to position the unloading means at substantially the center in the vehicle width direction. easily put the weight balance between the left and right, and claim 1
As in, in the configuration of moving the rotary excavation release means Kurumahaba direction, be set to any position rotary excavation release means it may not be taken out unloading position of the crushed material is changed.

According to the fifth aspect of the present invention, the transfer / extraction means is configured to be vertically movable with respect to the rotary excavation / discharge means. Therefore, by vertically moving the transfer / extraction means, the vertical position with respect to the rotary excavation / discharge means can be changed. It is possible to easily cope with a change in the direction of discharge of the crushed material of the rotary digging and discharging means due to the change of the depth of the digging groove by the rotary digging and discharging means, and to transfer and extract the crushed material discharged from the rotary digging and discharging means. There is an advantage that the crushed material can be satisfactorily received by the means and the collection efficiency of the crushed material can be further increased.

[Brief description of the drawings]

FIG. 1 is an overall plan view of an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a detailed side view of the same.

FIG. 4 is a perspective view of the lifting base.

FIG. 5 is a perspective view of the rotary excavation discharging means according to the first embodiment;

FIG. 6 is a perspective view of the housing.

FIG. 7 is a cross-sectional view of the housing.

8A is a side view of a rotary cutter, FIG. 8B is a front view showing an excavating operation, and FIG. 8C is a side sectional view.

FIG. 9 is a partially omitted perspective view showing a configuration for changing the position of the rotary excavation discharging means in the above.

FIG. 10 is a perspective view of the transfer and take-out means from the back.

FIG. 11 is a perspective view from the front of the transfer and take-out means.

FIG. 12A is a front view of a ribbon screw, and FIG.
Is a side view.

FIG. 13 is a schematic sectional view showing an excavating operation of the above.

FIG. 14 is a partial perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running vehicle body 2 Horizontal horizontal axis 3 Rotary excavation and discharge means 4 Transfer / extraction means 5 Unloading means

Claims (5)

(57) [Claims] And 1. A rotary drilling release means for releasing the crushed material produced by drilling to form a drilling groove in pavement surface in front above the traveling direction, in front than the rotary excavation emitting means
A transfer and extraction means for receiving the crushed material excavated by the rotary excavation discharge means and forcibly transferring the crushed material in the vehicle width direction and collecting the crushed material at the extraction port, and a discharge means for discharging the crushed material at the discharge port to the outside ; Excavation release means is smaller in width than the running vehicle
An excavation work vehicle for a pavement road, wherein the excavation work vehicle is formed so as to be movable in a width direction of a traveling vehicle body . 2. The transfer and take-out means is provided over substantially the entire width in the vehicle width direction, and is configured to forcibly transfer the crushed material received from the rotary excavation and discharge means from both ends in the vehicle width direction to a substantially central portion. The excavating work vehicle for a pavement road according to claim 1, wherein: 3. A rotary drilling releasing means, according to claim 1 excavation work vehicle for paved road, wherein the composed configured to rotate cutter excavation teeth are implanted multiple rotary drum. 4. The transfer and take-out means comprises a cover body having a substantially cylindrical cross section and a ribbon screw rotatably disposed behind the cover body, and a take-out port for discharging crushed material into the cover body. The excavation work vehicle for a pavement road according to claim 1 or 2, wherein the excavation work vehicle is formed at a substantially central portion in a vehicle width direction. 5. The excavation work vehicle for a pavement road according to claim 1, wherein the transfer / extraction means is configured to be vertically movable relative to the rotary excavation / release means.