JP2000184802A - Pebble remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a pebble remover of compact machine structure, showing an excellent pebble-removing function without needing a rotating metal mesh or the like by providing a pebble-carrying conveyor at a specific position on a self-propelling vehicle. SOLUTION: This pebble remover is provided with a device 2 for carrying removed pebbles on the front of a self-propelling vehicle, the device 2 bending at the middle, having a digging section at the front end and the front section freely moving in the vertical direction and rotating relative to the rear section, and being provided with pebble-carrying conveyors 4 and 5 on the rear section. It is preferable that the device 2 is provided with an auxiliary carrier device 24 at the top, which transfers the pebbles on the device 2 backward. It is also preferable that the device 24 is formed by providing a pebblecarrying rubber plate on an endless rotary belt.

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 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.

On the other hand, in Japanese Utility Model Laid-Open Publication No. 61-62966, the debris transfer device attached to a self-propelled vehicle has a linearly inclined structure, and is excavated from the ground. Sediment that is debrided and falls is collected and falls, and the volume of the falling sediment is larger than the original sediment, so the falling sediment is caught between the excavated ground and the lower surface of the debris transport device. However, there is a problem in that the rubble transfer device cannot have a very large rubble removal function, and as described in the publication, rubble must be removed by a rotary wire mesh behind the rubble transfer device. Was.

In addition, according to the rotary wire mesh, the earth and sand above and below the ground are agitated, which is not preferable. This is because the soil on the ground has more humus than the soil on the surface, and it is better to debris while maintaining the vertical relationship of the soil for the growth of food.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a self-propelled debris removing machine having a small mechanical configuration without a rotating wire net or the like and having an excellent debris removing function. The purpose is to:

[0008]

According to a first aspect of the present invention, a self-propelled vehicle has a digging portion at a front end thereof, and a front portion is vertically rotatable with respect to a rear portion. It is characterized in that a rubble transporting device having a broken structure is mounted, and a conveyor for transporting gravels is mounted on a rear portion of the debris transporting device on the self-propelled vehicle.

As described above, by mounting a debris transporting device and a conveyor on a self-propelled vehicle, debris can be easily removed at corners of agricultural land or the like where debris should be removed. Since the transfer device has a center-folded structure, in the debris part ahead of the center-fold part, the excavation part at the tip is digged into the ground by the running force of the debris machine, and excavated at a predetermined depth from the ground surface. Due to the pressure of sediment, part of the sediment passes through the front debris part and is debrised to some extent. In the debris section with a gentle inclination or horizontal posture, the earth and sand fall further and the debris is removed. In the front debris part, since the sorting action by the pressure of the earth and sand and the action of pushing up the earth and sand occur, even if the inclination angle is steep, the debris work is smoothly performed and the excavation of the deep part is also easily performed. I can do it.
In addition, the sediment deposited after debris maintains approximately the vertical relationship of the original sediment layer.

[0010] In addition, since the debris transfer device has a center-folded structure, a height difference between the ground surface and the degraved portion behind the center bent portion of the debris transfer device can be easily secured. In other words, a space is secured for the debris to fall after the debris, the volume of which is increased by including the air by the degraving work, and the space for the dropped sediment is secured without lengthening the debris transport 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.

Further, if the front and rear portions of the debris transfer device are configured so that the relative angle can be freely adjusted, the excavation depth and the front and rear portions can be adjusted by adjusting the inclination angle of the front degraved portion with respect to the rear portion. Can be suitably selected according to the soil. In addition, by raising the front part of the debris transfer device, the transport posture can be set.

[0012] In the second aspect of the present invention,
The rubble transfer device is characterized in that an auxiliary transfer device having a means for sending the gravels on the rubble transfer device backward is provided at an upper portion thereof.

As described above, by providing the auxiliary transport device above the debris transport device, the gravel can be transported backward even if the inclination angle is relatively large, and the degree of freedom in design can be increased. In addition, miniaturization becomes easy.

[0014] In a second aspect of the present invention,
The auxiliary transport device is characterized in that a rubber plate for transporting gravel is attached to an infinite rotating belt.

As described above, since the rubber plate is flexible by using the rubber plate as the gravel conveying means, the rubber plate can be used without considering the interference between the rubber plate and the rotating plate of the debris conveying device. Can be arranged and operated, preventing damage to the debris transfer device and exhibiting a good auxiliary transfer function.

According to a fourth aspect of the present invention, in the first or third aspect of the present invention, the conveyor is further characterized in that the conveyer is configured to firstly lift the gravel conveyed rearward by the debris conveying device. It is characterized by comprising a conveyor and a second conveyer capable of horizontally turning the gravel conveyed by the first conveyor to the outside of the self-propelled vehicle and dropping the gravel.

As described above, the first conveyor is a lifting conveyor having a steep inclination angle and is separated from the second conveyor for carrying out to the outside, thereby avoiding equipment mounted on the self-propelled vehicle. A conveyer can be set up, contributing to the miniaturization of the degraving machine. In addition, by installing the second conveyor so that it can be swiveled horizontally, the position of the accompanying gravel transport truck can be changed according to the situation of the farmland to be debris, etc. The work form can be taken according to the situation.

[0018]

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, 4 is the upper frame 1d
A first conveyor 5 mounted on the upper side 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 includes a center frame 1a.
Although it may be attached to the body frame such as vertically rotatable,
In the present embodiment, the debris transfer device 2 is attached to a body frame such as the center frame 1a via a swing frame 7. That is, as shown in the front view of FIG. 2, the swing frame 7 is attached to be able to swing left and right around a pivot shaft 7a provided at the center of the center frame 1a, and the left and right side frames 1b. A hydraulic cylinder 8 for swing is mounted between the swing frame 7 and the swing frame 7.

The debris transfer device 2 comprises a front part 9 and a rear part 10, and the rear part 10 is connected to the swing frame 7 by pins 11, and is supported by a stay 13 at a predetermined angle. The front part 9 and the rear part 10 are connected by a pin 14 so as to be relatively rotatable in the vertical direction. The front part 9 and the rear part 10 are separated by left and right hydraulic cylinders 15 provided between them.
As shown in the side view of FIG. 4, the inclination angle of the front part 9 becomes larger than that of the rear part 10 as shown in FIG. It is rotatable in the range. In addition, as shown by a two-dot chain line in FIG. 1, by raising the front part 9 by contracting the hydraulic cylinder 15, it is possible 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. All the rotating plates 17 are transmitted in the same direction (the direction in which the upper side rotates backward) by transmitting to the other rotating shaft 16 by the sprocket 19 and the chain 20 or the gear mechanism in the section.
It sends gravel and earth and sand backwards in conjunction with. The rotating shafts 16 having such rotating plates 17 are arranged alternately with the rotating shafts 16 adjacent to each other.
By arranging a plurality of pieces such that gaps for falling of earth and sand and small pebbles are formed between 7, the front part 9,
The rear part 10 constitutes the debris transfer sections 9a and 10a.

As shown in the plan view of FIG. 3 and the side view of FIG. 6, the tip of the front part 9 has a digging part 21 having a sharp tip.
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 portion 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.

The first conveyor 4 is shown in FIGS.
As shown in the side view of
The lower end is located below the rear end of the debris transfer device 2. The first conveyor 4 has a chain 34 hung on the left and right driving sprockets 32 at the front end and the driven sprocket 33 at the rear end rotated by a motor (not shown). 36, and is lifted upward and transported.

In this embodiment, the conveyor is configured to be foldable forward. That is, the front frame 37 and the rear frame 38 are bent freely by the pins 39 to form a conveyor frame, and the front frame 3
7 is fixed to the vehicle body 3 by pins 40, and the rear frame 38 is
, And a posture tilted forward as indicated by a two-dot chain line. The link mechanism 42
A link 45 having one end rotatably connected to the front frame 37 by a pin 43 and the other end connected to a rear frame 38 by a pin 44, and one end connected to the rear frame 38 by a pin 46, and the other end being the link A link 48 is connected to the link 45 by a pin 47. One end of the hydraulic cylinder 41 is connected to the front frame 37 by a pin 49, and the other end is connected to the link 45 by a pin 50. Then, at the time of work, the hydraulic cylinder 45 is extended to stand in an inclined position as shown by a solid line, and at the time of transportation, the hydraulic cylinder 45 is contracted to bring the rear frame 38 forward as shown by a two-dot chain line,
Thereby, the transport limit height at the time of transportation can be easily cleared.

As shown in FIGS. 1 and 9, the second conveyor 5 is installed at the rear portion of the upper frame 1d via a turning device 52 so that the second conveyor 5 can be directed not only rearward but also leftward and rightward. Installed in A hopper 54 is provided at the front end of the second conveyor 5 below the gravel falling chute 53 provided at the rear end of the first conveyor 4.
In the second conveyor 5, a driving roller 56 is attached to a front end of a frame 55 having a substantially horizontal or rear end slightly upward, a driven roller 57 is attached to a rear end, and a belt 58 is attached to these rollers 56, 57. Hang around. In the present embodiment, the frame 55 is connected to the front frame 60 and the rear frame 61 by pins 62,
The hydraulic cylinder 63 is attached between the rear frame 61 and the rear frame 61. The hydraulic cylinder 63 is extended at the time of work and substantially horizontal or slightly raised at the rear end as shown by a solid line, and the hydraulic cylinder 63 is contracted at the time of transportation. By lowering the rear frame 61 as shown by a two-dot chain line, the length is shortened to facilitate transportation.

In this degraving machine, as shown in FIG. 5, the hydraulic cylinder 15 is extended to drive the traveling body 1 by the operation of the operator in the operator's cab 6 to allow the traveling body 1 to run on its own. The excavation part 21 at the tip of No. 2 is digged into the ground to carry out debris work. Fig. 4
As shown in the figure, a part of the soil and small gravels are extruded from between the rotary plates 17 as shown by an arrow a by the running force of the rubble excavator, as shown by an arrow a, in the earth and sand of the deep part near the excavation part 21. The gravel 36 is pushed up along with the remaining sediment along the debris transporting section 9a, and the sediment and small gravel fall down as indicated by arrows b and c while maintaining the upper and lower layers before excavation. 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.

As described above, the self-propelled vehicle is provided with
By mounting the conveyors 4 and 5, debris can be easily removed at corners of agricultural land or the like to be removed. Also,
Since the debris transporting device 2 has a center-fold structure, the front part 9 of the debris transporting device 2 has a sorting action by the pressure of the earth and sand,
Due to the effect of pushing up the earth and sand, even if the inclination angle is steep, the debris work can be performed smoothly. As shown by the two-dot chain line in FIG. 5, by extending the hydraulic cylinder 15, the excavation part 21 is lowered by making the inclination of the front part 9 of the debris transport device 2 steep, and the length of the debris transport device 2 is reduced. Without lengthening, the excavation of a deeper portion can be easily performed as compared with the case where the debris transfer device 2 is configured in a straight line. 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 debris-removing unit 10 and the debris-removed sediment 65 after the debris are separated from each other as shown in FIG. 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.

As shown in FIG. 4, in the rear portion 10 of the debris transporting device 2, sediment and small gravel further fall as indicated by an arrow e to perform a debris operation, and finally, a predetermined size or more. Only the gravel 36 remains and 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 does not hurt even if it comes into contact with the rotary plate 17 of the debris transport device 2, so that there is no need to consider interference with the rotary plate 17. 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 steeply inclined angle and is separate 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.

[0034]

According to the first aspect of the present invention, a debris transfer device having a center-folded structure having an excavation portion at the tip is attached to a front portion of the self-propelled vehicle, and the debris transfer device on the self-propelled vehicle is provided. Since a conveyor for carrying gravel to the outside is mounted on the rear part of the building, debris can be easily removed at corners of agricultural land and the like where gravel is to be removed. In addition, since the debris transfer device has a middle-folded structure, in the steep part at the front of the debris transfer device, a sorting action by sediment pressure and a push-up action of the sediment occur. Even if it is sudden, debris work will be performed smoothly. In addition, since the debris transfer device has a center-fold structure, a height difference between the ground surface and the debris portion behind the center bend portion of the debris transfer device can be easily secured. In other words, the space between the sediment deposited in a narrow width by the debris work, the sediment that becomes higher than the original surface due to the increase in volume including air, and the debris part is secured, A space for the falling earth and sand is secured without lengthening the transport device.

As described above, by adopting the center-bending structure, it is possible to excavate a deep part with a short debris transfer device.
It is possible to secure a space for falling earth and sand, to reduce the size of the rubble excavator, and to provide a rubble excavator excellent in the rubble removal function.

Further, in the above-mentioned debris transporting device, the front part constituting the excavation part and the debris transporting part and the rear part constituting the debris transporting part are connected so as to be able to adjust the relative angle. By adjusting the inclination angle of the rear part of the transfer device and the inclination angle of the front debris part with respect to the rear part, the excavable depth and the inclination angles of the front part and the rear part are suitably selected according to the soil. And the excavation depth range can be expanded. In addition, by raising the front portion of the debris transport device, the transport position can be set, and the vertical movement range of the debris transport device can be reduced.

According to the second aspect of the present invention, in the first aspect, the debris transport device is provided with a transport auxiliary device having a means for sending the gravel on the debris transport device rearward on the upper part thereof.
Even if the inclination angle is relatively large, the gravel can be transported backward, so that the degree of freedom of design can be increased, and downsizing becomes easy.

According to a third aspect of the present invention, in the second aspect, the transport assisting device has a rubber plate for transporting gravel attached to an endless rotating belt, and the rubber plate has flexibility. Without considering interference with the rotating plate of the debris transfer device,
The rubber plate can be placed and operated, preventing damage to the debris transfer device and exhibiting a good auxiliary transfer function.

According to a fourth aspect, in any one of the first to third aspects, the conveyor is provided with a first inclined gravitationally rearwardly lifted gravels conveyed rearward by the debris conveyor. Since it is composed of a conveyor and a horizontally turnable second conveyor that conveys and drops the gravel conveyed by the first conveyor to the outside of the self-propelled vehicle, the conveyor avoids equipment mounted on the self-propelled vehicle. Can be installed, contributing to the miniaturization of the debris excavator. In addition, by installing the second conveyor so that it can be swiveled horizontally, the position of the accompanying gravel transport truck can be changed according to the situation of the farmland to be debris, etc. The work form can be taken according to the situation.

[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 side view of the first conveyor of the present embodiment.

FIG. 9 is a side view of the second conveyor of the present embodiment.

[Explanation of symbols]

1: running body, 1a: center frame, 1b: side frame, 1d: upper frame, 2: debris transport device, 4: first conveyor, 5: second conveyor, 6: cab, 7:
Swing frame, 8: hydraulic cylinder, 9: front, 10: rear, 13: stay, 15: hydraulic cylinder, 14: pin,
16: shaft, 17: rotating plate, 21: excavated part, 22, 23:
Guide plate, 24: auxiliary transport device, 29: infinite rotation band, 3
0: 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. F-term (reference) in Tsuchiura factory of formula company 2B034 AA06 GB01 GB06 GB19

Claims (4)

[Claims] 1. A self-propelled vehicle is provided with a debris transfer device having an excavation portion at a front end and a center-folding structure with a front portion rotatable up and down with respect to a rear portion. A gravel machine characterized by mounting a conveyor for conveying gravel at a rear portion of the gravel transporting device on a type vehicle. 2. The degraving machine according to claim 1, further comprising an auxiliary transporting device having a means for sending the gravel on the debris transporting device backward at an upper portion thereof. . 3. The degraving machine according to claim 2, wherein said auxiliary transporting device is provided with a rubber plate for transporting gravel in an endless rotation zone. 4. The conveyor according to claim 1, wherein the conveyor is an inclined first conveyor that lifts back the gravel transported by the debris transport device, and is transported by the first conveyor. A gravel removing machine comprising a horizontally conveyable second conveyor for transferring and dropping gravel to the outside of a self-propelled vehicle.