JP2002309612A - Gravel removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gravel removing machine capable of efficiently conducting gravel removing work at a high speed. SOLUTION: A front part of a self-propelled vehicle is equipped with a removed gravel conveying device 5 whose end has an excavation part 5a. The device 5 is constituted in such a manner that a plurality of gravel removing rods 15, around which a plurality of pins are provided protrusively and which are rotated in a direction in which a top-surface side heads backward, are disposed in a longitudinal direction. At least the rods 15 located in a front part of the device 5 have a pin arrangement acting in a direction in which sediment and gravels are brought near a central side. An upper part of an end of the device 5 is equipped with a rotating blade for puddling, which is rotated by a drive unit so as to agitate the excavated sediment. In addition, a rotating blade for feed or a chain-type feed blade is provided. The excavation part 5a is made movable with respect to a frame of the device 5, and a drive unit for vibrating the excavation part 5a is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravel removing machine for removing gravel mixed in soil such as agricultural land.

[0002]

2. Description of the Related Art In farmland that contains gravel in the ground and that freezes in winter or that has a severe outflow of earth and sand, it is necessary to remove surface gravel every few years. Various devices for removing such gravel have been proposed. For example, 61-6
In Japanese Patent No. 2966, a gravel transport device is mounted on the front of a self-propelled vehicle, a gravel sorting device consisting of a rotating wire mesh is mounted on the vehicle body, and the debris that has been removed is dropped down from the center of the vehicle. There has been proposed a configuration in which a sheet is conveyed by a conveyor projecting to the side of a vehicle body. The debris transfer device,
It has a drilling claw at the tip, a flower conveyor at the middle, and a lot conveyor at the rear. In addition, a conveyor is provided on the upper surface of the debris transfer device so that the transfer of earth and sand and gravel can be performed smoothly.

[0003]

In the above-mentioned conventional degraving machine, the running force of the degraving machine is used to make the tip claw of the debris transporting device bite into the soil and scoop up the same. Debris removal is performed while pulling up the soil.However, in the case of soil containing a large amount of gravel or hard soil, the transport resistance due to the friction between the side plate of the debris transport device and the soil increases, and the traveling speed decreases. At the same time, there is a problem that the sand and the like cannot be fed smoothly, and the degraving efficiency decreases.

On the other hand, in the case of soil having relatively high viscosity, there is a problem in that sediment accumulates at the front of the debris transporting device, and as a result, the excavation resistance is further increased and the efficiency of debris is deteriorated.

[0005] In view of the above problems, an object of the present invention is to provide a debris excavator capable of efficiently performing a debris operation at high speed.

[0006]

According to a first aspect of the present invention, there is provided a gravel excavator having a debris transport device having a digging portion at a front end of a self-propelled vehicle. Comprises a plurality of pins protruding around, and a plurality of debris rods arranged in the front-rear direction to rotate in the direction in which the upper surface is directed rearward,
The rubble rod is characterized in that at least the front part of the gravure transport device has a pin arrangement that acts in a direction to move earth and sand and gravels to the center side.

As described above, by setting the pin arrangement of at least the front part of the debris transporting device to an arrangement that brings soil and gravel toward the center side, the soil and gravel move toward the center side, and the side plate of the debris transporting device is disposed. The frictional resistance between soil and sand and gravel is reduced, the running speed is not reduced, the amount of rubble per unit of time or the output of the machine is improved, and the rubble efficiency is increased.

[0008] In the first aspect of the present invention,
At the rear of the set of debris rods having a pin arrangement that acts in the direction of moving the earth and sand or gravels to the center side, a set of debris rods having a pin arrangement that acts in the direction of bringing the earth and sand or gravels to the outside of the debris transfer device is provided. It is characterized by having.

As described above, if the sand and gravel once approached to the center are dispersed outside again, the whole surface of the gravel rod is removed and the gravel is carried out. It can contribute to the improvement of the degraving efficiency. At the front of the debris transport device, the sediment falls on the ground actively.After that, since the amount of sediment on the debris transport device decreases, transport the sediment and gravel in the spreading direction. Even if it is performed, the resistance due to friction with the side plate does not increase so much, and the efficiency does not decrease.

[0010] In a third aspect of the present invention, there is provided a debris removal machine according to the first or second aspect, further comprising a conveyer for conveying gravel at a rear side of the debris conveyance device, wherein a sediment or gravel is centrally provided at a rear portion of the debris conveyance device. It is characterized by comprising a set of debris rods having a pin arrangement acting in a direction approaching to the side.

As described above, the rear portion of the debris conveying device is provided with a pin array having a pin arrangement that is brought to the center side of the debris conveying device as a debris rod, so that when gravel falls from the debris conveying device to the rear conveyor. The gravel is discharged without spilling.

According to a fourth aspect of the present invention, there is provided a debris excavator provided with a debris transfer device having an excavation portion at a front end of a self-propelled vehicle. In addition, a rotary blade for scraping, which is rotated by a driving device so as to stir excavated earth and sand, is provided so as to be vertically adjustable.

[0013] As described above, the provision of the rotary blades for scraping above the tip portion (digging portion) of the debris transfer device dislodges the earth and sand, whereby the front portion of the debris transfer device is clogged with the sand. Without the above, the earth and sand can be smoothly sent backward, and the efficiency of the degraving can be improved without reducing the traveling speed of the degraving machine. In addition, since the vertical position of the rotary blade for scraping can be adjusted, earth and sand can be loosened at a suitable position according to the excavation depth.

[0014] In the fourth aspect of the present invention,
A rotary blade or a chain-type feed blade that lifts earth and sand backward is provided adjacent to a rear portion of the substitute rotary blade so as to be vertically adjustable.

As described above, by providing the chain type feed blade following the rotary blade for scraping, the earth and sand and the gravel can be more smoothly sent to the gravel sorting unit of the gravel conveying device, and the degraving efficiency is further improved. Can be done. Also, since the vertical position of the chain type feed blade can be adjusted,
Sediment and gravel can be fed at a suitable position according to the excavation depth.

According to a sixth aspect of the present invention, there is provided a gravel excavator provided with a debris transfer device having an excavation portion at a front end of a self-propelled vehicle. In addition, a driving device that is movable with respect to the excavation part and is provided.

As described above, by vibrating the excavation section, it is possible to easily excavate even in hard soil, and it is possible to efficiently perform the excavation work without reducing the speed of the excavator.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an embodiment of a degraving machine according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view showing a main body. 1 is a crawler type traveling body,
The traveling body 1 has a crawler 1b attached to the left and right sides of a track frame 1a. In some cases, a wheeled traveling body is used as the traveling body 1.

As shown in FIG. 3, a main body frame 4 is mounted on the track frame 1a so as to be swingable left and right by two rolling hydraulic cylinders 3 on the right and left around the front and rear pins 2 respectively. The body frame 4
In front of the gravels, a debris transfer device 5 is mounted
Is mounted so as to be able to swing up and down by a hydraulic cylinder 7 around the center.

As described above, the main frame 4 is made swingable to the left and right because the crawler 1b always keeps the gravel conveying device 5 horizontal even when one crawler 1b runs on the raised ground after the gravel. The digging portion 5a at the tip is always horizontal, the digging of the ground can be performed at the same depth over the entire width, and the cab 8 mounted on one or both front sides of the main body frame 4 is also kept horizontal. This is to make it easier for the operator to drive.

A first conveyor 9 (9a is a hydraulic motor for driving the first conveyor) 9 is mounted at the center of the main body frame 4 to incline the gravel carried from the debris transporting device 5 backward. Is done.

Further, a second conveyor 11 (11c)
Is mounted with its driving hydraulic motor). The second conveyor 11 has a horizontal portion 11a for receiving gravel falling from the rear end of the first conveyor 9 and an inclined portion 11b connected thereto.
Consists of

As described above, the reason why the second conveyor 11 is made rotatable is as shown by a two-dot chain line in FIG. This is for projecting the upper end of the second conveyor 11 onto the bed of a truck (not shown) to be transported to the right or left side of the second conveyor 11.

As shown in FIG. 1, the inclined portion 11b is provided with a hydraulic cylinder 12 for folding to reduce the height during transportation.
Is configured to be foldable forward.

On the main frame 4, a debris transfer device 5, a first conveyor 9, and a second conveyor 11 are installed at the center.
Hydraulic power units 13a, 13
b. That is, the debris transfer device 5, the first conveyor 9, and the second conveyor 11 are arranged in the center, and the hydraulic power units 13a, 13b are arranged separately on the left and right on the main body frame 4.

As can be seen from FIG. 2, the width W1 of the excavation portion 5a of the debris transfer device 5 is made smaller than the vehicle width W2 (preferably (1/3) W2≤W1≤ (2/3) W2 It is configured so that a large excavating force can be obtained.

FIG. 4 is a side view of the debris transfer device 5, FIG. 5 is a plan view thereof, and FIG. 6 is a sectional view thereof. In the debris transporting device 5, a plurality of interlockingly rotating debris rods 15 are arranged in a front-rear direction on a frame 14 having a lower surface opening, and a front excavation part 5a is formed in a tapered reiki shape.

As shown in FIGS. 8A and 8B, the debris rod 15 of the present embodiment has a hole formed on the outer surface of a shaft (a round shaft in this example) 16 and a plurality of holes are formed in the hole. The pin 17 is planted. In the present embodiment,
As a rubble rod, as shown in FIG. 8 (A), forward rotation as shown by an arrow R (rotation in the rotation direction during normal rubble operation)
In this case, the earth and sand and the gravel are transported while approaching the direction of arrow E, that is, the outside of the debris transport device, and FIG.
As shown in the figure, when the rotation is made forward as shown by an arrow R, a method is used in which earth and sand and gravel are transported while approaching the direction of arrow F, that is, toward the center of the debris transport device.

FIG. 9 is a developed view of the surface of the debris rod 15 shown in FIG. 8B. In addition, the rubble rod 15
The development of the surface of the one shown in FIG. 8A (rotating the earth and sand and gravels to the outside of the debris transfer device by rotation in the direction of arrow R) is shown by a pin in the direction of arrow R in FIG. 17 are inwardly oriented, and are not shown in a development view.

A gear 18 is fixed to the end of each shaft 16, and as shown in FIG. 7, a relay gear 19 is interposed between the adjacent gears 18, 18 to mesh with each other.

As shown in FIGS. 4 and 5, two hydraulic motors 20, 21 are mounted on the side of the frame 14.
The hydraulic motor 20 drives the area shown in FIG. 5A, that is, the front hydraulic motor that drives the front set of debris rods 15, and the hydraulic motor 21 drives the middle set and the rear set of debris rods 15 shown in B and C. Is what you do. That is, the debris rods (10 rods in the present example) of the front group A have the relay gear 19 interposed between the gears 18 at the shaft end, and are removed by the front hydraulic motor 20 as shown in FIG. During gravel work (running in the direction of arrow Xa), the gear 18 is rotated in the direction of arrow R, that is, in the direction in which the upper surface moves rearward (indicated by arrow Xb), at the same speed, and moves earth and sand and gravel backward. It is to let.
The debris rods 15 of the middle group B and the rear group C are also rotated at the same speed by the rear hydraulic motor 21 in series. Reference numeral 69 denotes a rotation speed detector of the rubble rod 15 of the front group A, reference numeral 70 denotes a rotation speed detector of the gravelly rod 15 of the middle group B and the rear group C. It is displayed on a means (not shown).

In the present embodiment, as shown in FIG. 8B, the debris rod 15 of the front set A is rotated from the outside as shown in FIG. The pins 17 are spirally arranged to move inward (center side),
Thereby, the friction between the side plate 22 provided on the frame 14 and the earth and sand or gravels is reduced, and the resistance required for rubble removal is reduced. As a result, the traveling speed is not reduced, the amount of debris per unit of time or the output of the machine is improved, and the degraving efficiency is increased.

In the middle set B (in this example, consisting of eleven debris rods 15), as shown in FIG. The pin 17 is helically disposed so as to move from the inside (center side) to the outside, so that the earth and sand and gravels are removed from the debris transfer device 5.
The distribution is evenly distributed over the entire width of the area, so that the efficiency of degraving increases.

As shown in FIG. 8B, the rubble rod 15 of the rear group C (in this example, composed of twelve rubble rods 15) has soil moved from the outside to the inside (center side). As described above, the pins 17 are helically arranged, so that the earth and sand on the debris rod 15 can be placed on the first conveyor 9 without spilling.

As shown in FIGS. 4 and 6, the frame 1
An auxiliary transport device (feeder) 40 is attached to the upper part of the device 4. The auxiliary transport device 40 includes a driving rotator 42 such as a driving sprocket or roller on the left and right that is rotated by a motor 41, and a driven rotator 43 such as a driven sprocket or roller on the front and left. And a rubber plate 45, which is a member for feeding gravel, attached to the endless rotating band 44.

In FIG. 4, reference numeral 47 denotes a debris transfer device 5 for loosening excavated soil when the soil has a high viscosity.
It is a conveyance device for preventing staying from being sent upward. The configuration of the transport device 47 of the present embodiment will be described with reference to the side view of FIG. 10 and the cross-sectional views of FIGS.

The stagnation preventing transport device 47 includes a vertically moving frame 49, a rotary blade 50 for scraping attached to a front portion of the vertically moving frame 49, and a soil scraper attached to a rear portion of the vertically moving frame 49. Lifting rotary blades 51 and a hydraulic motor 5 for rotating these blades 50, 51.
2, sprockets 53, 54, 55 and chain 5
A driving device comprising a vertical motion frame 49;
A hydraulic cylinder 59 and an X-shaped link 60 are attached to the frame 14 to adjust the vertical position of the frame.

The X-shaped link 60 includes a fixed frame 60a projecting forward from the frame 14 and fixed thereto, a link 60c having a center connected to the fixed frame 60a by a pin 60b, and an intermediate portion connected to the link 60c. A link 60g rotatably connected by 60d and coupled to an upper end thereof includes a link 60g movably mounted in a groove 60f of the fixed frame 60a and the vertically moving frame 49, and a lower end of the link 60g is a pin. The pin 60i, which is connected to the vertical frame 49 by 60h and is connected to the lower end of the link 60c,
0j is slidably fitted.

A pin 60e fitted in the groove 60f of the fixed frame 60a is connected to a rod of the hydraulic cylinder 49. When the hydraulic cylinder 59 is expanded and contracted, the pin 6
0e moves back and forth along the groove 60f, whereby the link 6
The vertical movement frame 49 moves up and down as 0c and 60g expand and contract. Thereby, the vertical position of the rotary blade 50 for scraping and the blade 51 for scraping can be adjusted.

As shown in FIG. 11 and FIG. 12, the rotary blade 50 for scraping and the blade 51 for
Are provided to protrude left and right.

FIG. 13 (A) shows the transfer device 4 for preventing stagnation.
7 is another embodiment, wherein the rotary blade 50 for scraping is
A chain-type feed blade 96 for picking up and sending earth and sand backward is attached to the up-and-down moving frame 49 together with the rotary blade 50 for scraping, adjacent to the rear part. The chain-type feed blade 96 includes a rotating shaft 86 fitted with the sprocket 54 and rotatably mounted on the vertical moving frame 49, a sprocket 87 fitted on the rotating shaft 86, and a rear portion of the vertical moving frame 49. A rotating shaft 88 rotatably mounted, a sprocket 89 fitted to the rotating shaft 88, a chain 90 wrapped around these sprockets 87, 89, and a left and right moving frame 49 of the vertically moving frame 49 of the rotating shafts 86, 88. FIG. As shown in (B), the plate 94 includes plates 94 provided at equal intervals and blades 95 fixed to the plates 94, respectively.

As described above, the excavation section 5 of the debris transfer device 5
In the case where a scraping rotary blade 50 is provided on the upper part of a and the degraving operation is performed while the degraving machine is running, the rotary blade 50 for scraping is used.
Is rotated in the direction indicated by the arrow R1 in FIG. 10 or FIG. 13 to stir the soil and the gravel, so that the soil can be disentangled even if the soil has a relatively high viscosity. It is possible to smoothly feed backward without clogging at the tip of the rubble, and to improve the rubble removal efficiency without reducing the traveling speed of the rubble. In addition, since the vertical position of the rotary blade 50 for scraping can be adjusted by expanding and contracting the hydraulic cylinder 59, the earth and sand can be loosened at a suitable position according to the excavation depth.

The rotary blade 51 shown in FIG.
The loosened earth and sand is sent backward by moving the chain-type feed blades 96 for lifting the soil as shown by the arrow R2, and the earth and sand and the gravel are further smoothly removed by the gravel sorting unit (the gravel rod) of the gravel transporting device 5. 5), and the degraving efficiency can be further improved. In addition, since the vertical position of the rotary blade 51 and the chain-type feed blade 96 can be adjusted, it is possible to feed earth and sand and gravel at a suitable position according to the excavation depth.

In the example shown in FIG. 13A, the stagnation-preventing transport device 47 has a configuration in which the substitute rotary blade 50 is provided at the front and the chain-type feed blade 96 is provided at the rear. , A chain-type feed blade 96 is provided at the front, and a rotary blade 50 for scraping is provided at the
A chain-type feed blade 96
After being taken into the debris transfer device 5, the earth and sand may be released.

As shown in FIG. 4, the digging portion 5a is rotatably mounted on a front portion of the frame 14 around a pin 61, and is provided between the digging portion 5a and a bracket 62 on the lower surface of the frame 14. Is connected by a pin 63, a rubber cushion 64, a hydraulic exciter 65, a rod 66, and a pin 67, and the excavator 5a moves back and forth at, for example, 30 Hz by the operation of the exciter 65. It has a configuration.

When the exciter 65 is provided in this manner, the excavation section 5a of the debris transfer device 5 is made to bite below the ground GL by running force, and excavation is performed while the excavation section 5a is vibrated by the exciter 65. Debris can be removed. Thus, by vibrating the excavation part 5a, it is possible to easily excavate at high speed even in hard soil, and it is possible to efficiently perform the work for removing debris.

As a method of vibrating the excavation part 5a, the method shown in FIG. 14A or 14B can be adopted. In the example of FIG. 14 (A), a frame 98 is attached to the front of the frame 14 of the debris transfer device 5 via a vibration damping material 97,
The exciter 99 is attached to the frame 98, and the frame 98
The excavation part 5a is fixed and attached to the lower part of the digging part, and the excavation part 5a is vibrated up and down.

FIG. 14B shows an example of the debris transfer device 5.
A bracket 100 is provided below the frame 14, and an angle 101 is attached to the bracket 100 so as to be rotatable about a shaft 102, and a digging portion 5 a is provided below the angle 101.
At the same time, a motor 106 is attached to the upper part of the front part of the frame 14, and the eccentric shaft 103 rotated by the motor 106 and the angle 102 are connected by a rod 104 and a pin 105. Reference numeral 5a designates a structure that rotates around the shaft 102 and vibrates. In addition, various methods can be used as a method of vibrating the excavation part 5a.

Further, when the present invention is carried out,
As disclosed in Japanese Patent Publication No. 0-184802, the debris transfer device 5 has a structure that can be bent between the front set A and the rear sets B and C, or a debris rod having a structure other than the above as a debris rod. A rod may be used, and a debris rod that does not have a function of moving the soil toward the center or outside may be used. The present invention can also be applied to a structure in which the main body frame 4 is fixed on the track frame 1a, and the gravel transport device 5 is attached to the track frame 1a so as to be able to swing left and right.

[0050]

According to the first aspect of the present invention, a pin rod is used as a debris rod, and the pin arrangement of at least the front part of the debris transfer device is arranged to bring earth and sand and gravel to the center side.
Sediment and gravel are conveyed to the center side, and as a result, the frictional resistance between the side plate of the debris transport device and the sediment and gravel is reduced, the traveling speed is not reduced, and the debris per time or machine output is reduced. The amount is improved, and the degraving efficiency is increased.

According to the second aspect of the present invention, the earth and sand once brought to the center are dispersed to the outside again by the pin rod, so that the entire surface of the debris rod is removed, and the debris is removed. This can contribute to improving the efficiency of debris removal as a whole of the gravel transport device.

According to the third aspect of the present invention, since a pin arrangement is provided at the rear of the debris transfer device as a debris rod which is brought to the center side of the debris transfer device, gravel is transferred from the debris transfer device to the rear conveyor. When falling, gravel is discharged without spilling.

According to the fourth aspect, the rotary blades for scraping are provided above the tip portion (digging portion) of the debris transfer device, so that the dirt can be loosened and transported at the tip portion of the debris transfer device. As a result, the front part of the debris transfer device can be smoothly fed backward without being clogged with earth and sand, and the degraving efficiency can be improved without reducing the traveling speed of the degraving machine. In addition, since the vertical position of the rotary blade for scraping can be adjusted, earth and sand can be loosened at a suitable position according to the excavation depth.

According to the fifth aspect, the rotary blade or the chain-type feed blade is provided following the substitute rotary blade.
Further, the earth and sand and the gravel can be smoothly sent to the gravel sorting section of the debris transfer device, and the debris efficiency can be further improved. Further, since the vertical position of the chain-type feed blade can be adjusted, earth and sand and gravel can be fed at a suitable position according to the excavation depth.

According to the sixth aspect of the present invention, since the driving device for vibrating the excavation portion is provided, it is possible to easily excavate even on hard soil, and the efficiency of the excavation work is reduced without reducing the speed of the excavator. It can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a degraving machine according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of a main body of FIG. 1;

FIG. 4 is a side view of the debris transfer device of the present embodiment.

5 is a plan view showing a rubble rod arrangement section of the rubble transport device of FIG. 4;

FIG. 6 is a cross-sectional view of the debris transfer device of FIG.

FIG. 7 is a side view showing an interlocking device of a debris rod of the debris transfer device of FIG. 4;

FIGS. 8A and 8B are side views each showing a debris rod used in the present invention.

FIG. 9 is a development view of the debris rod of FIG. 8;

FIG. 10 is a side view showing one embodiment of a stay preventing transport device according to the present invention.

11 is a cross-sectional view showing a vertical movement mechanism and a rotary blade for scraping of the stagnation preventing transfer device of FIG. 10;

FIG. 12 is a longitudinal sectional view showing the rotary blade of FIG. 10;

13 (A) is a side view showing another embodiment of the stagnation preventing transfer device according to the present invention, and FIG. 13 (B) is a plan view showing a part thereof.

14 (A) and 14 (B) are side views showing another embodiment of the excavating unit vibration device according to the present invention.

[Explanation of symbols]

1: running body, 1a: track frame, 1b: crawler, 1c: hydraulic motor, 2: pin, 3: hydraulic cylinder,
4: body frame, 5: debris transport device, 5a: excavation section,
6: pin, 7: hydraulic cylinder, 8: operator's cab, 9: first conveyor, 9a: hydraulic motor, 10: turning device, 10
a: hydraulic motor, 11: second conveyor, 11c: hydraulic motor, 12: hydraulic cylinder, 13a, 13b: hydraulic power unit, 14: frame, 15: debris rod, 1
6: shaft, 17: pin, 18: gear, 19: relay gear, 20: front hydraulic motor, 21: rear hydraulic motor, 2
2: side plate, 40: auxiliary transfer device, 41: hydraulic motor, 4
2: drive rotating body, 43: driven rotating body, 44: infinite rotating band, 45: rubber plate, 47: stagnation prevention transport device, 49:
Vertical moving frame, 50: rotary blade for scraping, 51: rotary blade for scraping earth and sand, 52: hydraulic motor, 53 to 55:
Sprockets, 56, 57: Chain, 59: Hydraulic cylinder, 60: X-link, 61: Pin, 62: Bracket, 63: Pin, 64: Buffer rubber, 65: Hydraulic vibrator, 66: Rod, 67 : Pin, 85: rotating blade, 8
6, 88: rotating shaft, 87, 89: sprocket, 90:
Chain, 91, 92: sprocket, 93: chain, 94: plate, 95: blade, 96: chain type feed blade, 97: cushioning material for vibration isolation, 98: frame, 99:
Exciter, 100: bracket, 101: angle, 10
3: eccentric shaft, 104: rod, 105: pin, 106:
motor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Otsuka 650, Kandachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Yokoyama Loader Co., Ltd.

Claims (6)

[Claims] An excavator equipped with a debris transfer device having a digging part at the front end of a self-propelled vehicle. A plurality of rubble rods that rotate in the direction toward the rear are arranged in the front-rear direction, and the rubble rods are arranged so that at least the front part of the rubble transport device moves soil and gravel toward the center. A degraving machine characterized by having a working pin arrangement. 2. The degraving machine according to claim 1, wherein the sediment and the gravels are disposed on the outer side of the debris conveying device at the rear of the set of rubble rods having a pin arrangement acting in the direction of moving the sediment and the gravels to the central side. A gravel machine comprising a set of gravel rods having a pin arrangement that acts in the direction of approach. 3. The degraving machine according to claim 1, further comprising a conveyer for conveying gravel behind the debris transporting device, and for moving the sediment and gravel toward the center at the rear of the gravel transporting device. A gravel machine characterized by comprising a set of gravel rods having a pin arrangement acting in a direction. 4. An excavator equipped with a debris transfer device having an excavation section at the front end of a self-propelled vehicle, wherein the excavated sediment is agitated at an upper portion of the debris transfer apparatus. And a rotary blade for scraping that is rotated by a driving device so as to be vertically adjustable. 5. The degraving machine according to claim 4, wherein a rotary blade or a chain-type feed blade for scraping earth and sand rearward is provided adjacent to a rear portion of said rotary blade for scraping so as to be vertically adjustable. And debris machine. 6. A debris excavator provided with a debris transfer device having an excavation portion at a front end of a self-propelled vehicle, wherein the excavation portion is movable with respect to a frame of the debris transfer device, and A degraving machine provided with a drive device for vibrating an excavation part.