JPH1030246A - Land grading machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently apply the grading work to a flat face by cutting the ground over the whole width of a traveling vehicle. SOLUTION: A swing bracket 11 is fitted to the body 1 of a traveling vehicle swingably to the right and left, a boom 14 is vertically rockably fitted to the swing bracket 11, and an arm 17 is vertically oscillatably fitted to the boom 14. A cutting device provided with a rotary cutter is turnably fitted to the arm 17. When the cutting device is turned by nearly 120 deg. and the boom 14 is swung to the right and left, the ground is cut by the rotary cutter, and the grading work is applied to the flat face of the ground over the whole width of the traveling vehicle 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing unevenness of a ground when a cable such as a communication cable, a power cable, or a flexible body is buried in the ground such as the ground, the sea floor, or the water floor. Related to leveling machinery.

[0002]

2. Description of the Related Art In order to bury cables such as communication cables, power cables, and flexible bodies in a hard seabed such as a bedrock, or a water bottom, a groove for burying a cable is drilled in the seabed with a groove drilling apparatus. A cable is inserted into the bottom of the trench excavated by the burial machine, and earth and sand are put on the cable in the trench and backfilled.

[0003]

As described above, when burying a cable, a trench is dug in the seabed mechanically by a trench excavator, but if the seabed is uneven with unevenness, The trench may not be dug correctly.

That is, in order to bury a cable in the bottom of an excavated trench, it is preferable that the bottom of the trench is somewhat flat and has substantially the same depth. It is difficult to excavate the bottom shape of the sea to some extent and it is difficult to excavate it to almost the same depth, and if there is unevenness on the seabed, the trench excavator will skid and it is not possible to excavate the trench along the predetermined cable burying direction is there.

[0005] Further, since the conventional cable burying machine moves along the seabed, if the seabed is uneven, the body of the cable burying machine may be tilted up and down along the unevenness or may be tilted left and right. In some cases, the cable cannot be properly inserted into the groove because the body cannot be moved in the predetermined cable burying direction.

The above description is not limited to the case where the cable is buried on the sea floor, but is the same when the cable is buried on the ground.

[0007] As a machine for removing unevenness on the ground to obtain a flat surface, an arm member is mounted on a vehicle body of a traveling vehicle so as to be able to swing up and down, a rotary cutter is mounted on the arm member, and the vehicle body travels. It is known that the surface of the ground is cut and removed with a rotary cutter to make a flat surface by oscillating up and down.

[0008] In this terrain machine, the rotation axis of the rotary cutter is orthogonal to the swinging direction of the arm member (the running direction of the vehicle body).
The cutting width is the length of the rotary cutter in the direction of the rotation axis, and the length of the rotary cutter in the direction of the rotation axis cannot be made too long due to the cutting force.

[0009] For this reason, the cutting width is narrow, and in order to cut the entire width of the traveling vehicle, it is necessary to reciprocate in the same place many times, resulting in poor terrain work efficiency.

Further, since the cutting waste is scattered in the traveling direction due to the rotation of the rotary cutter, the cutting waste remains in the width of the traveling vehicle, and the cutting waste is piled up on the portion cut on the flat surface. .

For this reason, when excavating a ditch with a ditch excavator or inserting a cable into a ditch with a cable burying machine, the traveling body may ride on mountain-shaped cutting shear and the vehicle body may be tilted. May not be excavated or cables may not be properly inserted into the trench.

Accordingly, it is an object of the present invention to provide a leveling machine capable of solving the above-mentioned problems.

[0013]

A first invention is directed to a traveling vehicle 3, a boom 14 attached to the vehicle body 1 so as to be able to swing left and right and swing up and down, and a swingable up and down swing on the boom 14. Arm 17 attached to the
7, a cutting device 23 is provided.
Is a leveling machine having a rotary cutter 73 whose rotation axis is oriented in the vehicle running direction.

According to the first invention, the rotary cutter 73 is pressed against the ground, the boom 14 swings left and right, and the rotary cutter 73 is moved left and right, thereby cutting the ground and leveling the ground.

Thus, the entire width of the traveling vehicle 3 can be cut with a cutting width substantially equal to the length of the rotary cutter 73 in the axial direction, thereby improving the leveling work efficiency.

Further, since the rotary cutter 73 rotates in the moving direction of the cutting device 23, the cutting waste scatters in the moving direction of the cutting device 23, and the cutting waste can be discharged to other than the entire width of the traveling vehicle 3.

[0017] Thus, since the cutting waste does not accumulate in a mountain shape on the flat surface, the vehicle body does not tilt when the trench excavator or the cable burying machine runs, and the trench can be dug correctly. The cable can be correctly inserted in the groove.

Further, by swinging the arm 17 up and down with respect to the boom 14, the angle formed by the cutting device 23 with the horizontal plane changes. When tilted in the front-rear direction, the boom 14 is swung up and down to adjust the height of the cutting device 23, and the arm 17 is swung up and down so that the cutting device 23 is correctly contacted with the surface to be cut. Can be done.

Thus, the ground inclined forward and backward with respect to the running surface can be cut into a flat surface in the left-right direction.

According to a second aspect of the present invention, the cutting blade 72 of the rotary cutter 73 of the cutting device 23 in the first aspect has a rake angle, the cutting device 23 is provided on the arm 17, and the rotary shaft of the rotary cutter 73 is provided on the vehicle body. This is a leveling machine that is mounted so that it can turn freely so that it is opposite to the front and rear in the running direction.

According to the second aspect, since the cutting blade 72 of the rotary cutter 73 has a rake angle, the ground can be efficiently cut by rotating the rotary cutter 73 in one direction.

Further, by turning the cutting device 23 with respect to the arm 17, the rotation axis of the rotary blade cutter 73 can be made to be opposite to the front and rear in the vehicle running direction, so that the boom 14 can be swung in one direction. To move the cutting device 23 in one direction and swing the cutting device 23 in the other direction.
When moving in the other direction, the rotation direction and the movement direction of the rotary cutter 73 can be made the same.

As a result, the ground can be efficiently cut by swinging the boom 14 in both directions and the cutting device 23 can be moved in both directions, so that the leveling operation efficiency is further improved.

The third invention relates to a traveling vehicle 3 and its vehicle body 1
Boom 14 attached to the left and right swing and up and down swing
And an arm 17 attached to the boom 14 so as to be able to swing up and down, and a cutting device 23 attached to the arm 17. The cutting device 23 is provided with a cutting blade 72 having a rake angle on a drum 71 in a circumferential direction. And the rotary cutter 73 attached in a plurality of rows in the axial direction is attached to the cutter bracket 20, and the cutter bracket 20 is attached to the arm 17.
First, the rotation axis of the rotary cutter 73 is inclined to the right by a predetermined angle with respect to the axis of the boom 14 and the arm 17.
And the rotation axis of the rotary cutter 73 is reversed back and forth,
In addition, there is provided a leveling machine which is rotatably mounted around a vertical axis over a second posture inclined leftward by a predetermined angle with respect to the axis of the boom 14 and the arm 17.

According to the third invention, the cutter bracket 2
By setting 0 to the first posture, the distance from the swing center of the boom 14 to the plurality of cutting blades 72 attached in the circumferential direction of the drum 71 is different, and by swinging the boom 14 to the left, the circumference of the drum 71 is changed. Since the moving trajectories of the plurality of cutting blades 72 attached in the different directions are different from each other, the moving trajectories of the cutting blades 72 provided in the adjacent rows can be partially overlapped, so that the cutting can be performed without any remaining cutting.

Further, by swinging the boom 14 rightward with the cutter bracket 20 in the second position, the distances are different as described above, and the movement trajectories of the cutting blade 72 can be partially overlapped with each other. Cutter 7
Since the direction of rotation and the direction of movement of 3 are the same, cutting can be performed without remaining cutting.

Thus, the ground can be cut efficiently by swinging the boom 14 right and left without any remaining cutting.

The fourth aspect of the present invention is a leveling machine in which the earth discharging plate 24 is attached to the vehicle body 1 according to the first, second or third aspect of the invention so as to be vertically movable closer to the vehicle body 1 than the cutting device 23.

According to the fourth aspect of the present invention, it is possible to evenly level the cutting shear remaining on the flat surface cut by the earth discharging plate 24 after cutting by the cutting device 23. Further, since the earth discharging plate 24 is vertically movable, even if the ground is inclined in the running direction (front-back direction), the cutting shear can be uniformly leveled.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS.
A traveling body 2 is mounted on both left and right sides of the vehicle to form a traveling vehicle 3. A mount bracket 10 is mounted on the vehicle body 1, and a swing bracket 11 is mounted on the mount bracket 10 so as to be able to swing freely on the vertical axis 12 in the left-right direction (the vehicle body width direction). A pair of swing cylinders 13 are connected across the swing bracket 11 and the mount bracket 10.

The swing bracket 11 has a boom 14
A boom cylinder 16 is connected to the boom 14 and the swing bracket 11 so as to be swingable up and down on a horizontal shaft 15. An arm 17 is attached to the tip of the boom 14 so that the arm 17 can swing up and down on a horizontal axis 18.
An arm cylinder 19 is connected across the arm 17 and the boom 14.

The arm 17 has a cutter bracket 20
Are mounted so as to be able to turn left and right within a range of about 120 degrees on the vertical axis 21, and a turning cylinder 22 is connected to the cutter bracket 20 and the arm 17. A cutting device 23 is attached to the cutter bracket 20. The cutting device 23 has a rotary cutter having a rotation axis directed in the front-rear direction (vehicle running direction).

As described above, the rotary cutter of the cutting device 23 is pressed against the ground, and the rotary cutter is swung together with the boom 14 in the width direction of the vehicle body, whereby cutting can be performed over the entire width of the traveling vehicle 3.

An earth discharging plate 24 is attached to one end of the vehicle body 1 so as to be vertically swingable by a link 25, and a pair of lift cylinders 26 are connected to the link 24 and the vehicle body 1. The length of the discharging plate 24 is longer than the entire width of the traveling vehicle.

As described above, by running the earth discharging plate 24 while maintaining a predetermined height from the flat rock surface after cutting, a small amount of cutting residue remaining on the flat surface is flattened. Can be leveled.

Next, each part will be described in detail. (Mount bracket 10) As shown in FIGS. 3 and 4,
The horizontal plate 30, the pair of vertical plates 31, the vertical plate 32, the upper protrusion 33, and the lower protrusion 34 constitute the mound bracket 10. The horizontal plate 30 is connected to the vehicle body 1 by bolts, and the upper protrusion 33 and the lower protrusion 34 have vertical holes 3.
5 is formed concentrically, and a bracket 36 is provided on the pair of vertical plates 31. The swing cylinder 13 is connected to the bracket 36 by a vertical pin 37.

(Swing Bracket 11) As shown in FIGS. 3 and 4, the swing bracket 11 is
0, a lower intermediate forked portion 41, pin holes 42, 42 on both sides, pin holes 43, 43 on both sides, and a bracket 44. The upper intermediate forked portion 40 and the upper protruding portion 33 and the lower intermediate forked portion 41 and the lower protruding portion 34 are connected with each other on the vertical axis 12.
The third piston rod 13a is connected by a vertical pin 45.

(Boom 14) The base end of the boom 14 is bifurcated, and the horizontal shafts 15 are respectively fitted into the pair of base ends 14a and the lateral pin holes 43 on both sides of the swing bracket 11. The boom cylinder 16 is connected to the bracket 14 b of the swing bracket 11 and the bracket 44 of the swing bracket 11 by a lateral pin 46.

(Arm 17) As shown in FIGS. 5, 6, and 7, the arm 17 integrally includes an upper horizontal member 51 and a lower horizontal member 52 which are vertically separated from each other on a mounting base member 50. The tubular body 53 is fixed to a position near the protruding end of the horizontal member 51 and a position near the protruding end of the lower horizontal member 52, and a bracket 54 is fixed to the upper surface of the upper horizontal member 51.

The mounting member 50 is swingably connected to the tip of the boom 14 by a horizontal shaft 18 in the vertical direction, and the arm cylinder 19 is connected by a horizontal pin 55 over the upper bracket 14c and the bracket 54 of the boom 14. is there.

(Cutter Bracket 20) The lower horizontal plate 60, the upper horizontal plate 61, and the one vertical plate 62 have a horizontal U-shaped main body 63, and a plurality of reinforcing vertical plates 64 are fixed to the main body 63. A bracket 65 is fixed to one vertical plate 62.

The upper and lower horizontal members 51 and 52 of the arm 17 are inserted into the main body 63 of the cutter bracket 20,
The longitudinal axis 21 is fitted over the lower plate 60 and the cylindrical body 53, and the cutter bracket 20 is connected to the arm 17 so as to be pivotable left and right.

The turning cylinder 22 is connected by a vertical pin 66 over the mounting portion 50 of the arm 17 and the bracket 65 of the cutter bracket 20.

(Cutting device 23) As shown in FIGS. 6, 7 and 8, a drum 71 is mounted on a T-shaped mounting member 70 so as to be driven to rotate by a motor (not shown). A plurality of rotary cutters 72 are mounted in the axial direction at intervals in the circumferential direction to form a rotary cutter 73.
The mounting member 70 is attached to the lower horizontal plate 60 of the cutter bracket 20 at an interval in the front-rear direction (running direction) and the rotation axis is oriented in the front-rear direction to form the cutting device 23.

The cutting blade 72 has a rake angle as shown in FIG. 7, and performs a cutting operation while rotating in one direction (arrow a).

As described above, when the boom 14 is swung to move the cutting device 23 in the direction of the arrow b in FIGS. 2 and 5 for cutting, a pair of rotary cutters 73 is used to remove unevenness (unland portion) on the ground. After cutting, the cutting waste is turned into a rotary cutter 7
By the rotation of No. 3, it scatters sequentially in the direction of arrow b.

At this time, the rotation axis of the rotary cutter 73 is at a predetermined angle α to the right with respect to the axis of the boom 14 and the arm 17.
(For example, 30 degrees), and the moving trajectories of the cutting blades 72 adjacent to each other in the axial direction attached to the drum 71 of the rotary cutter 73 partially overlap, so that cutting can be performed without remaining cutting.

When the cutting device 23 swings the boom 14 in the posture shown in FIG. 2 and FIG. To operate the cutter bracket 20
Is turned about the vertical axis 21, and the cutting device 23 is turned approximately 120 degrees as shown in FIG.

As a result, the rotation axis of the rotary cutter 73 is shifted leftward by a predetermined angle α (for example, 30 degrees) with respect to the axis of the boom 14 and the arm 17, and
Are rotated in the swing direction of the boom 14 (the moving direction of the cutting device 23) as shown in FIG. 10, so that the unevenness of the ground is cut while moving in the direction of arrow c. The cutting waste is sequentially scattered in the direction of arrow c by the rotation of the rotary cutter 73.

Next, a description will be given of an operation of cutting and removing the uneven portion of the ground and leveling the ground to a flat surface. As an example, when the ground has an uneven shape inclined upward and to the right in a direction perpendicular to the traveling direction (in FIG. 2, the direction of one side 3a of the traveling vehicle 3 is high and the direction of the other side 3b is low), the boom is used. Cutting is performed while swinging 14 in the leftward direction (arrow b direction) in FIG. Specifically, the vehicle body 1 is stopped, the turning cylinder 22 is extended, the cutting device 23 is set to the posture shown in FIG. 5, the swing cylinder 13 is extended and contracted, and the boom 14 is moved rightward with the swing bracket 11 (FIG. 2). (In the direction of arrow c), and the cutting device 23 is positioned more laterally than the one side portion 3a of the traveling vehicle 3 as shown by a virtual line in FIG.

Next, the drum 71 is driven to rotate, the boom cylinder 16 is contracted, and the arm cylinder 19 is extended and contracted to push the rotary cutter 72 against the ground at a predetermined angle, and the swing cylinder 13 is extended and contracted. The cutting device 23 is moved by operating the boom 14 to the left (in the direction of the arrow b).

Thus, the cutting blade 72 of the rotary cutter 73
As shown in FIG. 7, the rotary cutter 73 moves in the direction of arrow b while cutting the ground as shown in FIG. 7, and scatters the cutting waste in the direction of arrow b (downward slope) to cut the diagonally shaded portion of the ground.

When the rotary cutter 73 has passed over the other side 3b in the width direction of the traveling vehicle 3, the drum 71 is stopped, the boom cylinder 16 is extended and the rotary cutter 73 is lifted off the ground, and the swing cylinder 13 is extended and retracted. Then, the boom 14 is swung to the right, and the cutting device 23 is moved to a position lateral to the one side 3 a of the traveling vehicle 3.

The above operation is repeated until the ground becomes flat.

After the ground has been cut flat as described above, the lift cylinder 25 shown in FIG. 1 is extended and retracted to press the earth discharging plate 24 against the cut surface of the ground, thereby uniformly removing the cutting shear slightly left in front. While traveling for the above-mentioned cutting width.

By repeating the above operation, the ground is cut to level the ground.

When the ground has an uneven shape which is inclined upward and leftward in a direction perpendicular to the traveling direction, the turning cylinder 22 is contracted to bring the cutting device 23 into the posture shown in FIG. As described above, the rotary cutter 73 is pressed against the ground, the boom 14 is swung rightward (in the direction of arrow c), and the ground is rotated by the rotary cutter 73 as shown in FIG.
By moving in the direction of arrow c while cutting as shown in FIG.

The cutting device 23 is, as shown in FIG.
A motor 91 may be attached to the attachment bracket 90, and a plurality of cutting blades 93 may be attached downward to a rotating body 92 rotated by the motor 91 to form a vertical axis rotating cutter 94. In this case, the mounting bracket 90 may be mounted on the arm 17.

[Brief description of the drawings]

FIG. 1 is an overall front view of a leveling machine.

FIG. 2 is an overall plan view of the leveling machine.

FIG. 3 is a plan view of a boom mounting portion.

FIG. 4 is a front view of a boom mounting portion.

FIG. 5 is a plan view of a cutting device mounting portion.

FIG. 6 is a front view of the cutting device.

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a side view as viewed from B in FIG. 5;

FIG. 9 is a plan view showing a state where the cutting device is turned 120 degrees.

FIG. 10 is a sectional view taken along the line CC in FIG. 9;

FIG. 11 is a front view showing another example of the cutting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body 2 ... Running body 3 ... Running vehicle 10 ... Mound bracket 11 ... Swing bracket 13 ... Swing cylinder 14 ... Boom 16 ... Boom cylinder 17 ... Arm 19 ... Arm cylinder 20 ... Cutter bracket 22 ... Swivel cylinder 23 … Cutting device 24… Discharge plate 72… Cutting blade 73… Rotating cutter

Claims (4)

[Claims] 1. A traveling vehicle 3, a boom 14 attached to the vehicle body 1 so as to swing left and right and up and down, an arm 17 attached to the boom 14 so as to swing up and down, and a cutting attached to the arm 17 A leveling machine comprising a device 23, wherein the cutting device 23 has a rotary cutter 73 whose rotation axis is oriented in the vehicle body running direction. 2. A rake angle is provided to the cutting blade 72 of the rotary cutter 73 of the cutting device 23, and the cutting device 23 is attached to the arm 17, and the rotation axis of the rotary cutter 73 is opposed to the front and rear directions in the vehicle running direction. 2. The leveling machine according to claim 1, wherein the machine is mounted so as to be free to turn. 3. A traveling vehicle 3, a boom 14 attached to the vehicle body 1 so as to swing left and right and up and down, an arm 17 attached to the boom 14 so as to swing up and down, and a cutting attached to the arm 17. A rotary cutter 73 in which a plurality of rows of cutting blades 72 having a rake angle are attached to a drum 71 in the circumferential direction at intervals in the circumferential direction, and the cutting device 23 is attached to the cutter bracket 20; The cutter bracket 20 is attached to the arm 17, the rotation axis of the rotary cutter 73 is inclined to the right by a predetermined angle with respect to the boom 14, and the axis of the arm 17, and the rotation axis of the rotary cutter 73 is Reverse and boom 1
4. A ground leveling machine which is rotatably mounted around a vertical axis over a second posture inclined leftward by a predetermined angle with respect to the axis of the arm 17. 4. A cutting device 23 is provided on the vehicle body 1 with a dumping plate 24.
4. The leveling machine according to claim 1 or 2, wherein the leveling machine is mounted so as to be vertically movable closer to the vehicle body.