JP2000186340A - Gravel removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive the improvement of transportation by providing a gravel carrying conveyor on the rear part of the gravel removing device of the front part of a self travelling vehicle and folding a projection part from the vehicle body downward. SOLUTION: A gravel removing device 2 providing an excavation part on the edge is attached to the front part of a crawler travelling body 1, and a first conveyor 4 and a second conveyor 5 for discharging gravel removed by the device 2 to the outside of a vehicle are provided. Next, the lower end of the conveyor 4 is positioned downward of the device 2 to be set at steep inclination, and during transportation, a rear frame 38 is folded frontward. Next, the conveyor 5 is set through a swiveling device 52 on the rear part of an upper frame 1d, and can be swiveled rearward and right and left. Furthermore, the rear frame 61 of the conveyor 5 is suspended downward, the length is shortened and transportation is facilitated. Thereby the transportation limit height of the first conveyor can be easily cleared, and since the second conveyor can be swieveled, the position of an accompanying gravel transportation truck can be changed in response to a condition.

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, Shokai 61
In JP-A-62966, a gravel transfer device is mounted at the front of a self-propelled vehicle so that the vertical position can be adjusted, and a rotary wire mesh is installed behind the debris transfer device to remove earth and sand and small debris with the wire mesh. A conveyer protruding laterally from the car body is provided to remove the gravel of a predetermined size or more from the wire mesh to the outside of the car body after the carcass, and the conveyor is configured to be able to bend upward to clear the limit width at the time of transportation. Has been proposed.

[0003]

However, in the apparatus disclosed in Japanese Utility Model Application Laid-Open No. 61-62966, a portion of the conveyor protruding to the side of the vehicle body and projecting to the side in order to clear the limited transport width. Is configured to be able to bend upward, so if the joint for bending is raised in the transported position that is bent upward, the conveyor will need a predetermined length to load gravel onto the trailing truck. , The upper end of the conveyor may be higher than the height limit for trailer transportation, and if the joint is lowered, the height for loading gravel on the trailing truck that loads and transports gravel during debris work is secured There is a problem that it becomes difficult.

[0004] In the conventional debris machine, when working on the entire site while turning (U-turn) within the work site, a truck for transporting the gravel must run over the debrised portion. After the debris work, the soft soil is compacted to form a rut, and the wheels of the truck are also caught, making it difficult to accompany the truck smoothly.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a conveyor which is self-propelled and has a structure capable of easily clearing a transport limit height and easily securing a loading height on a trailing truck. The purpose of the present invention is to provide a debris machine having the same.

Further, the present invention provides a debris machine having a configuration in which a soft soil after debris is not compacted to form a rut, etc., and a truck for transporting gravel can be smoothly run. The purpose is to:

[0007]

According to a first aspect of the present invention, there is provided a debris excavator in which a self-propelled vehicle is provided with a debris transfer device having a digging part at a front end thereof. A conveyor for gravel transportation is provided at a rear portion of the transportation device, and a portion of the conveyor protruding from the vehicle body is configured to be bent downward from a portion in the middle thereof.

As described above, since the conveyor is configured to be bent downward, it is possible to easily secure the loading height on the trailing truck in a posture in which the tip is raised from the joint portion of the conveyor during work. Also, by configuring the conveyor joint so that it does not exceed the transport limit height,
Transport restrictions are easily cleared. When the conveyor is turned backward, the length of the debris excavator can be shortened and transported.

[0009] In the first aspect of the present invention,
The conveyor includes a first inclined conveyor that lifts the gravel transported by the debris transport device backward, and a second conveyor that transports and drops the gravel transported by the first conveyor to the outside of the self-propelled vehicle. Wherein the second conveyor is configured to be able to bend downward and the upper portion of the first conveyor is configured to be able to bend forward.

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.

[0011] In the second aspect of the present invention,
The second conveyor is installed on a vehicle body via a turning device, and the gravel discharge end of the conveyor is capable of changing its direction from rearward to both left and right sides.

As described above, by installing the second conveyor so as to be able to turn horizontally, it is possible to change the position of the accompanying gravel transport truck according to the situation of the agricultural land to be debris, etc. The work style according to the site situation can be taken.

[0013]

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 debris transfer 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.
d constitutes a vehicle body frame.

As a conveyor for carrying the gravel after the gravels have been removed by the gravels transport device 2 to the outside of the vehicle, a conveyor having a single unit from the carry-in end to the carry-out end of the gravels transport device 2 may be provided. However, in the present embodiment, the upper frame 1
d, a first conveyor mounted on the upper frame 1
d and a second conveyor 5 mounted on the rear side. 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 mounted on a vehicle body frame such as the one vertically rotatable, in the present embodiment, the debris transfer device 2 is mounted on the center frame 1a via the swing frame 7. That is, as shown in the front view of FIG.
Is mounted so as to be swingable left and right about a pivot shaft 7a provided at the center of the center frame 1a, and a hydraulic cylinder 8 for swing is provided between the left and right side frames 1b and the swing frame 7. Mounted.

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 a pin 11, and a stay provided between the rear part 10 and the swing frame 7. 13 sets and supports a predetermined inclination 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 moved from the posture in which the front part 9 and the rear part 10 are substantially linear as shown in the side view of FIG. As shown in the figure, the front part 9 can be rotated within a range in which the inclination angle of the front part 9 is larger than that 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 up with the front part 9, so that 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.
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 the present embodiment, the first conveyor 4 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, the front frame 37 is fixed to the vehicle body 3 by the pins 40, and the rear frame is 3
8 is configured to be able to take a solid line position in FIG. 8 and a posture tilted forward as indicated by a two-dot chain line. The link mechanism 42 has a link 45 having one end rotatably connected to the front frame 37 by a pin 43 and the other end connected to the rear frame 38 by a pin 44, and a link 45 having one end connected to the rear frame 38.
6 and a link 48 having the other end 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. are doing.

During operation, the hydraulic cylinder 45 is extended to stand in an inclined position as shown by a solid line, and during transportation, the hydraulic cylinder 45 is contracted to bring the rear frame 38 forward as shown by a two-dot chain line. The transport limit height during transportation can be easily cleared.

As shown in FIGS. 1 and 9, the second conveyor 5 is installed at the rear 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 this embodiment, a frame 55 is connected to a front frame 60 and a rear frame 61 by pins 62, and a hydraulic cylinder 63 is mounted between the front frame 60 and the rear frame 61. The cylinder 63 is extended to have a substantially horizontal or slightly raised rear end as shown by a solid line, and the hydraulic cylinder 63 is contracted during transportation to lower the rear frame 61 as shown by a two-dot chain line. Is shortened to facilitate transportation. The joint formed by the pin 62 is set so that the height of the articulated machine is equal to or less than the transport limit height when the excavator is mounted on a transport truck.

In this degraving machine, while the traveling body 1 is driven by the operation of the operator on the operator's cab 6 to run on its own, as shown in FIG. The excavation part 21 at the tip of No. 2 is installed in 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 equipped with the debris transfer device 2
By mounting the conveyors 4 and 5, debris can be easily removed at corners of agricultural land or the like to be removed. Also,
In the present embodiment, since the debris transport device 2 has a center-fold structure, the sorting operation by the pressure of the sediment and the pushing-up operation of the sediment occur in the front portion 9 of the debris transport device 2, so that the inclined surface is inclined. Even if the angle is steep, the debris work is performed smoothly. As shown by a two-dot chain line in FIG.
The excavation unit 21 is extended by increasing the inclination of the front part 9 of the debris transfer device 2 or, if necessary, by contracting the stay 13 and increasing the inclination of the rear part 10.
, 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 part 9 of the debris transporting 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 portion 10 and the sediment sediment 65 after the debris are removed, 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.

In order to secure such a space for falling earth and sand, the front part 9 is not made rotatable with respect to the rear part 10, but is formed into a center-folded structure which is fixedly connected at a predetermined angle. Can also be done. However, as in the present embodiment,
By making the front part 9 rotatable with respect to the rear part 10, the selection of the inclination angle of the rear part 10 and the selection of the inclination angle of the front part 9 are arbitrarily performed, so that the selection range of the excavation depth is expanded. In addition, the arbitrarily selected bending angle can provide an advantage that the work can be performed at the bending angle according to the soil quality.

In the rear portion 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 gravel 36 having a predetermined size or more remains. 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.

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. 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.

The first conveyor 4 is a lifting conveyor having a steep inclination angle and is separated from the second conveyor 5 for carrying out to the outside, so that equipment mounted on a 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. In addition, when the U-turn is repeated at the end of the land to be rubbed and the rubble is repeated, the second conveyor 5 is turned by operating the turning device 52 of the second conveyor 5 every time the direction changes. By always moving the gravel transport truck on the relatively hard ground without debris, the soft soil after debris will not be compacted to form ruts, etc. The truck can run smoothly.

When transporting, the second conveyor 5 is turned backward and bent downward as shown by the two-dot chain line in FIGS. Yes, the length limitation during transportation is easily cleared, and since it does not protrude to the side of the debris excavator, the transportation limitation width is easily cleared.

[0034]

According to the first aspect of the present invention, there is provided a debris machine having a debris transfer device having an excavation portion at a front end thereof attached to a front portion of a self-propelled vehicle, wherein a gravel is provided at a rear portion of the debris transfer device. It has a conveyor for transporting, and the part of the conveyor protruding from the vehicle body is configured to be bent below the part in the middle, so that during work, load on the trailing truck with the tip raised from the joint of the conveyor. The height can be easily secured. Also, by configuring the conveyor so that the joints do not exceed the transport limit height, the transport height is easily cleared. In addition, when the conveyor is configured so as to be able to face backward or backward, it is possible to transport the debris machine with a reduced transport length without considering the transport limitation width of the debris machine.

According to a second aspect, in the first aspect, the conveyor comprises a first inclined conveyor for lifting backward the gravel transported by the debris transport device, and a gravel transported by the first conveyor. And a second conveyor for transporting and dropping the vehicle to the outside of the self-propelled vehicle.The second conveyor is configured to be able to be bent downward, and the upper portion of the first conveyor is configured to be able to be bent forward. So
The transport limit height of the first conveyor can be easily cleared. In addition, since the first conveyor is installed at an angle, the conveyor can be installed avoiding the equipment mounted on the self-propelled vehicle, which contributes to downsizing of the degraving machine.

According to the third aspect, in the second aspect, the second conveyor is installed on the vehicle body via a turning device, and the gravel discharge end of the conveyor can change its direction from the rear to the left and right sides. The position of the accompanying gravel transport truck can be changed in accordance with the situation of the agricultural land to be debrided, etc., so that the degree of freedom of the work can be increased and the work form can be taken according to the site conditions. In addition, in the case where the U-turn is repeated at the end of the land to be debrised, the second conveyor is turned every time the direction changes, and the truck for transporting the gravel is constantly debrised with relatively hard ground. By running on the ungrounded ground, the soft soil after debris is not compacted to form ruts and the like, and the truck for transporting gravel can be smoothly run.

[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. Tsuchiura factory

Claims (3)

[Claims] 1. A debris transfer machine having a debris transfer device having an excavation section at a front end attached to a front portion of a self-propelled vehicle, comprising a conveyer for transferring gravel at a rear portion of the debris transfer device. A degraving machine characterized in that a portion of the conveyor protruding from the vehicle body can be bent downward from a portion in the middle thereof. 2. The conveyer according to claim 1, wherein the conveyor is a self-propelled type of a sloped first conveyor for lifting the gravel transported by the debris transport device backward, and a gravel transported by the first conveyor. A second conveyor to be transported to the outside of the vehicle and dropped, wherein the second conveyor is configured to be able to be bent downward, and an upper portion of the first conveyor is configured to be able to be bent forward. Debris machine. 3. The method according to claim 2, wherein the second conveyor is installed on a vehicle body via a turning device, and a gravel discharge end of the conveyor can change direction from a rearward direction to both left and right sides. Gravel machine.