JP2000186339A - Gravel removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self travelling gravel removing machine capable of excavating to an uniform depth by adding a relatively compact equipment configuration even when a car body is tilted by riding to silted deposit or the like after discharging gravel. SOLUTION: To a car body frame of a self travelling vehicle, an oscillating frame 7 is attached in a freely oscillating manner in such a way that the right and left can move up and down around a shaft 7a as a center installed in the back and forth direction of the vehicle. An oscillating drive equipment such as a hydraulic cylinder 8 or the like is installed between the oscillating frame 7 and the car body frame. At the front portion of the oscillating frame 7, gravel removing and carrying equipment 2 having an excavating section 21 at the tip is installed in a freely vertically turnable manner.

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. Among them, Tokiko 7-
In Japanese Patent No. 51800, an excavator or the like is used to pull a debris vehicle with a working machine such as a hydraulic excavator, thereby causing the excavation portion at the tip of the debris transport device of the debris vehicle to penetrate into the ground. In the above, there is proposed a configuration in which gravels having a predetermined size or more are transported backward, and gravels and earth and sand having a predetermined size or less fall to the surface of the ground. In addition, the publication discloses that the left and right wheels of the vehicle are moved relative to the body of the vehicle so that the excavated portion does not become inclined even when the vehicle for debris traveling on the debris that has been removed is inclined. Vertically provided hydraulic cylinders are individually mounted so as to be vertically movable, and when the vehicle body is inclined, one of the left and right hydraulic cylinders of the vehicle body is extended and the other hydraulic cylinder is contracted to keep the vehicle body horizontal. Are disclosed.

In Japanese Utility Model Laid-Open Publication No. Sho 61-62966, a self-propelled vehicle is equipped with a debris transport device at the front of the self-propelled vehicle so that the vertical position can be adjusted, and a rotary wire mesh is installed behind the debris transport device. Things have been suggested.

[0004]

However, the debris machine described in Japanese Patent Publication No. Hei 7-51800 is towed by a work machine to carry out debris work, so that it is difficult to make a small turn and the work to be towed is difficult. There was a problem that it was difficult to remove the gravel in the space of the machine, and it was difficult to remove the gravel in the corners of the farmland. Further, since the vehicle body and the debris transfer device are supported by the hydraulic cylinder, the size of the support mechanism around the hydraulic cylinder needs to be increased.

In order to make the excavator small-turnable, a self-propelled vehicle may be equipped with a debris transfer device as described in Japanese Utility Model Application Laid-Open No. 61-62966. However, the excavator described in the above publication has an excavated portion mounted on the vehicle body so as to be vertically movable, and the excavated portion also inclines with the inclination of the vehicle body. However, since the excavated portion also inclines with the inclination of the vehicle body, there is a problem that it is not possible to excavate to a uniform depth from the surface of the ground to remove debris.

[0006] In view of the above-mentioned problems, the present invention is a self-propelled type and excavates to a uniform depth even when the vehicle body is inclined due to climbing on sediment or the like after debris. It is an object of the present invention to provide a rubble excavator capable of performing a rubble and a mechanism of excavating the uniform depth with a relatively small member.

[0007]

According to the present invention, there is provided a degraving machine in which a left and right can be moved up and down on a body frame of a self-propelled vehicle around a pivot shaft provided in the front-rear direction of the vehicle. A swinging drive device is provided between the swinging frame and the vehicle body frame, and a debris transfer device having a digging portion at a tip at the front of the swinging frame. It is characterized by being attached.

[0008] As described above, if the debris transfer device is swingably attached to the vehicle body frame and is configured to be rocked by the drive device, the traveling body rides on the sediment after debris and the vehicle body tilts. Even in this case, the operator can always excavate at a constant depth from the ground surface by swinging the swinging frame with respect to the vehicle body so that the debris transfer device is parallel to the ground surface. In addition, the drive device for swinging the debris transport device can be configured with a relatively small device because it is sufficient to swing only the debris transport device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an embodiment of a gravel excavator according to the present invention, FIG. 2 is a front view showing a vehicle body portion thereof, and FIG. 3 is a plan view of a front part of the gravel excavator. . Reference numeral 1 denotes a crawler type traveling body, which may use a wheel type traveling body.
The traveling body 1 has a crawler 1c attached to side frames 1b provided on the left and right of a center frame 1a. The gravel transport device 2 is attached to the center frame 1a so as to protrude forward. 1d is an upper frame fixed on the center frame 1a, the center frame 1a, the side frame 1b and the upper frame 1d.
Forms a body frame. 4 is the upper frame 1
The first conveyor 5 mounted on the upper frame 5 is a second conveyor mounted rearward on the upper frame. A driver's cab 6 is installed on the left and right sides of the upper frame 1d so that the driver's cab can be driven on either the left or right side according to the form of work.

The debris transfer device 2 may be mounted on the body frame such as the center frame 1a so as to be vertically rotatable. In the present embodiment, the swing frame 7 is mounted on the body frame such as the center frame 1a. Mounted via That is, as shown in the front view of FIG. 2, the swing frame 7 is attached to the center of the center frame 1a so as to be swingable right and left around a pivot shaft 7a provided in the front and rear direction of the vehicle body. A hydraulic cylinder 8 is mounted between the left and right side frames 1b and the swing frame 7 as a swing drive device.

The debris transfer device 2 comprises a front part 9 and a rear part 10. The rear part 10 is connected to the swing frame 7 by pins 11, and a stay provided between the swing frame 7 and the rear part 10. 13, the rear portion is set and supported so as to have a predetermined inclination angle. The front part 9 and the rear part 10 are pins 14
, So as to be relatively rotatable vertically. The front part 9 and the rear part 10 are the left and right hydraulic cylinders 1 provided between them.
5, the front part 9 and the rear part 1 as shown in the side view of FIG.
From a posture in which 0 is substantially linear, as shown in FIG.
Rotation is possible within a range in which the inclination angle of the front part 9 is larger than the inclination angle of the rear part 10. In addition, as shown by a two-dot chain line in FIG. 1, the hydraulic cylinder 15 is contracted and lifted, so that the front part 9 can be lifted to take a posture of traveling without excavation.

As shown in the side view of FIG. 6 and the plan view of FIG. 7, the front part 9 and the rear part 10 have a plurality of rotating shafts 16 arranged thereon, and the rotating shafts 16 have teeth 17a on the outer periphery. The rotating plates 17 are arranged at equal intervals and alternately between adjacent rotating shafts 16, and a part of the rotating shafts 16 is rotated by a motor (not shown) to reduce the rotational force. By transmitting to the other rotating shaft 16 by the sprocket 19 and the chain 20 in the section, all the rotating plates 17 are linked in the same direction (the direction in which the upper side rotates backward) to send gravel and earth and sand backward. . A plurality of rotating shafts 16 having such rotating plates 17 are arranged such that rotating plates 17 are alternately arranged with respect to adjacent rotating shafts 16 so that gaps for falling of earth and sand and small gravel are formed between the rotating plates 17. By doing so, the debris transport units 9a and 10a in the front part 9 and the rear part 10 of the debris transport device 2 are configured.

As shown in the plan view of FIG. 3 and the side view of FIG.
And the guide plates 22 on both sides are arranged in a tapered shape so that the width at the rear is reduced. In the present embodiment, the debris transfer section 9a of the front section 9 has a shape in which the tip 9a 'is bent downward.

The rear part 10 is provided with guide plates 23 on both sides thereof so as to be parallel to each other, and between these guide plates 23, 23, as shown in FIG. Is installed. The auxiliary transport device 24 includes a driving rotator 26 such as a driving sprocket or a roller at the rear left and right rotated by a motor (not shown), a driven rotator 27 such as a driven sprocket or a roller at the front left and right,
An infinite rotating belt 29 made of a sprocket chain or a belt or the like wound around these members, and a rubber plate 30 attached to the infinite rotating belt 29 for feeding gravel. In the present embodiment, the member 3 for feeding gravel is used.
A rubber plate is used as 0.

As shown in FIG. 1, the first conveyor 4 is installed at a steep inclination, and its lower end is located below the rear end of the debris transfer device 2. The first conveyor 4 is composed of a bucket conveyor attached to a bucket 35 between left and right sprocket chains 34 hung between a driving sprocket 32 and a driven sprocket 33, and lifts and transports gravel upward. is there. In the present embodiment, the conveyor is configured to be foldable forward. That is, the front frame 37 and the rear frame 38
Are bent freely by pins 39 to form a conveyor frame.
The hydraulic cylinder 41 for raising and lowering and the link mechanism 4
According to 2, the rear frame 38 is configured to be able to take a solid line position at the time of work and a posture in which the rear frame 38 is tilted forward as indicated by a two-dot chain line at the time of transportation so as to clear the limit height.

The second conveyor 5, as shown in FIG.
It is installed at the rear part of the upper frame 3 via a turning device 52, and is installed so as to be able to face not only rearward but also left and right. At the front end of the second conveyor 5,
Chute 5 for falling gravel provided at the rear end of the first conveyor 4
A hopper 54 is provided below the hopper 3. The second conveyor 5 has a drive roller 56 attached to a front end of a frame 55 having a substantially horizontal or rear end slightly upward, and a driven roller 57 attached to the rear end.
The belt 58 is wrapped around 6, 57. In the present embodiment, the frame 55 is formed by connecting the front frame 60 and the rear frame 61 with pins 62, and a hydraulic cylinder 63 is mounted between the front frame 60 and the rear frame 61. As shown in the solid line, the rear frame 61 is extended substantially horizontally or the rear end is slightly lifted.
Is reduced as shown by a two-dot chain line, thereby shortening the length to facilitate transportation.

In this degraving machine, as shown in FIG. 5, the traveling body 1 is driven by the operation of an operator in the operator's cab 6 to allow the traveling body 1 to run on its own, and as shown in FIG. The excavation part 21 at the tip of the is cut into the ground to carry out debris work. In this degraving operation, as shown in FIG. 4, as shown by an arrow “a”, the sediment of the soil in a deep portion close to the excavation part 21 is removed from between the rotary plates 17 by the running force of the excavator. Part or small gravel is extruded, and the gravel 36 is pushed up along with the remaining sediment along the debris transporting section 9a, and the sediment and small pebbles fall as indicated by arrows b and c with the upper and lower layers before excavation. I do. Gravel 36 having a predetermined size or more is transported together with earth and sand in the debris transporting section 9a as shown by an arrow d, and the earth and sand and small pebbles fall as shown by an arrow e. The gravel remaining on the debris transporting unit 10a is discharged to the outside by the first conveyor 4 and the second conveyor 5, and is loaded on an accompanying truck or the like.

As shown in FIG. 8, when the crawler 1c of the traveling body 1 climbs on the rubbed soil 65 in the rubble transporting apparatus 2 and the vehicle body is inclined, as shown in FIG. , 8 while contracting one and simultaneously extending the other, keeps the oscillating frame 7 parallel to the surface of the ground, thereby keeping the excavated portion 21 parallel to the surface of the ground. Excavation can be performed at a uniform depth over the entire width to remove debris. Since the drive device for swinging the swing frame 7 only needs to swing the debris transfer device 2, a small hydraulic cylinder 8 or the like can be used as compared with the case where the vehicle body is supported.

In the present embodiment, since the debris transporting device 2 has a center-folded structure, the sorting operation by the pressure of the sediment and the pushing-up operation of the sediment are performed at the front part 9 of the debris transporting device 2. Therefore, even if the inclination angle is steep, the debris work is performed smoothly. As shown by a two-dot chain line in FIG. 5, the hydraulic cylinder 15 is extended to make the front portion 9 of the debris transfer device 2 steeper, so that the excavation portion 21 is formed.
, And excavation of a deeper portion can be easily performed than when the debris transporting device 2 is formed in a straight line without increasing the length of the debris transporting device 2. That is, deep excavation can be performed by the short debris transfer device 2.

In the present embodiment, the tip 9a 'of the front portion 9 of the debris transfer device 2 is further inclined so that the pressing force of the earth and sand utilizing the running force of the debris machine ( In the lower excavation where the reaction force is most easily used, the passage of the earth and sand by the pressing force of the earth and sand is efficiently performed.

Further, as shown in FIG. 5, the debris transporting device has a center-folded structure, so that the degraved portion 10 behind the center-folded portion of the debris transporting device and the sediment 65 after the debris are removed. The height difference H between them is easily ensured. In other words, the height of the sediment 65 becomes higher than the original ground surface due to the fact that the sedimentary portion after debris becomes narrower than the excavated portion and the volume increases by including air in the sedimentary sediment. By making the 2 bent, the space in which the earth and sand after the gravels are dropped by this gravitational operation is secured without lengthening the gravels transporting device. As described above, by adopting the center-folded structure, the rubble removal operation can be ensured, and the rubble transport device can be shortened.

At the rear part 10 of the debris transporting device 2, sediment and small gravel further fall as shown by the arrow e to perform the degraving action, and finally only the pebbles 36 having a predetermined size or more remain. It is led to the first conveyor 4. In this case, since the rubber plate 30 transports the gravel 36 by pushing the gravel 36 by the operation of the auxiliary transport device 24, the gravel can be transported backward even if the inclination angle of the debris transport device 2 becomes relatively large, and the design is improved. The degree of freedom can be increased, and miniaturization is facilitated.

Further, if the rubber plate 30 is used as a gravel transport member, the rubber plate will not be damaged even if it comes into contact with the rotary plate 17 of the debris transport device 2, so that the interference with the rotary plate 17 is not considered. In addition, the rubber plate 30 can be arranged and operated, and the debris transport device can be prevented from being damaged, and a good auxiliary transport function can be exhibited.

Further, the first conveyor 4 is a conveyor for raising the steepness at a steep angle, and is separated from the second conveyor 5 for carrying out to the outside, so that the equipment mounted on the self-propelled vehicle can be used. Conveyors can be set up avoiding this, contributing to miniaturization of the debris excavator. In addition, by installing the second conveyor 5 so that it can be turned horizontally, the position of the gravel transport truck that accompanies the debris excavator can be changed according to the situation of the agricultural land to be debris, etc. The work style according to the site situation can be taken.

[0025]

According to the present invention, the swing frame is attached to the vehicle body frame so that the left and right ends swing up and down, and the drive device for the swing frame is attached. The operator swings the rocking frame and keeps the rocking frame in a posture parallel to the surface of the ground. Excavation can be performed. Further, the drive device only needs to swing only the swing frame and does not support the vehicle body, so that a mechanism for excavating this uniform depth with a relatively small member can be realized.

[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 front view showing a vehicle body part of the embodiment.

FIG. 3 is a plan view of a front part of the degraving machine of the present embodiment.

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

FIG. 5 is a side view showing a degraving work state according to the present embodiment.

FIG. 6 is a partially enlarged view of FIG. 4;

FIG. 7 is a partially enlarged view of FIG. 3;

FIG. 8 is a front view showing a working state of the embodiment.

[Explanation of symbols]

1: traveling body, 1a: center frame, 1b: side frame, 1d: upper frame, 2: debris transport device, 3: upper frame, 4: first conveyor, 5: second conveyor,
6: cab, 7: swing frame, 8: hydraulic cylinder,
9: front part, 10: rear part, 13: stay, 15: hydraulic cylinder, 14: pin, 16: shaft, 17: rotary plate, 21: excavation part, 22, 23: guide plate, 24: auxiliary transport device, 2
9: infinite rotation band, 30: rubber plate, 32: drive sprocket, 33: driven sprocket, 34: chain, 35:
Bucket, 36: gravel, 37: front frame, 38: rear frame, 40: pin, 41: hydraulic cylinder, 42: link mechanism, 53: chute, 54: hopper, 56: drive roller, 57: driven roller, 58: Belt, 60: front frame, 61: rear frame, 63: hydraulic cylinder, 65: sediment

 ──────────────────────────────────────────────────の Continuing from the front page (72) Kunihiko Yoshida, Inventor Kunitachi-cho, Tsuchiura-city, Ibaraki Pref.Hitachi Construction Machinery Co., Ltd. Tsuchiura factory

Claims (1)

[Claims] 1. A swing frame is attached to a body frame of a self-propelled vehicle so as to be able to swing up and down around a shaft provided in the front-rear direction of the vehicle. A debris removal machine comprising: a swing drive device provided between a frame and the vehicle body frame; and a debris transfer device having a digging portion at a tip is attached to a front portion of the swing frame.