JP5780386B2 - Stone gravel removal machine - Google Patents

Description

  The present invention relates to a stone gravel remover that efficiently removes stone gravel in a field.

  Conventionally, a stone debris removal machine that removes stone gravel that becomes an obstacle when harvesting crops from a field has been proposed. As this gravel removal machine, a system is known in which soil is sifted out while the excavated soil mass is conveyed by a rod conveyor, and the remaining stone gravel is stored in a tank. In addition, a method is also known in which stone pebbles dug together with a clot are sieved with a trommel (rotating sieve) and the remaining stones are stored in a tank (Non-Patent Document 1).

"Stonepicker Catalog" Ida Co., Ltd.

  However, in the conventional gravel remover including each of the above-described methods, the end of the rod conveyor and the trommel is arranged at the opening edge of the tank into which the gravel is charged. For this reason, the stone gravel thrown from the rod conveyor or the trommel accumulates on one side of the tank in an uneven manner, and there is a problem that it cannot be stored in a well-balanced manner.

  Moreover, in the conventional stone gravel remover, the tank into which the gravel is thrown is between an input position where the opening is directed upward and the gravel is discharged with the opening facing downward. , Is configured to be rotatable. For this reason, if the end of the rod conveyor or trommel is extended to the inner central position of the tank in order to put stones and gravel into the center of the tank, the end of the tank collides with the tank when the tank rotates. There is a problem of getting in the way.

  The present invention has been made in order to solve such a problem, and gravel selected from a soil block in a field is put into a gravel recovery tank without unevenness, and can be efficiently recovered. The purpose is to provide a removal machine.

The stone debris removal machine according to the present invention includes a digging unit that digs up a mass of soil in the field, a soil treatment conveyor that crushes the lumps that the digging unit digs up and sorts the gravel, and a stone gravel selected by the soil treatment conveyor A gravel removal machine having a gravel recovery tank that can move between an input position for charging and a discharge position for discharging charged gravel, wherein the gravel recovery tank moves from the input position to the discharge position. Before carrying out, it has conveyor evacuation means for evacuating the end portion of the soil treatment conveyor disposed inside the stone gravel recovery tank to the outside of the stone gravel recovery tank.

Further, in the present invention, the soil treatment conveyor is rotatably connected to a fixed conveyor portion disposed on the outside of the gravel recovery tank from the digging portion, and the terminal end of the fixed conveyor portion, and until the inside of the gravel recovery tank has an extended and a movable conveyor section, before the stone gravel recovery tank is moved to the discharge position, said conveyor retracting means moves the movable conveyor section the You may make it evacuate to the outside of a stone gravel collection tank.

  Furthermore, in the present invention, an extension recess for extending the end portion of the soil treatment conveyor to the inside of the stone gravel recovery tank is formed on a side surface of the stone gravel recovery tank, and the stone gravel recovery When the tank is in the charging position, the extended recess may be opened, and when the stone gravel recovery tank moves to the discharge position, the tank may have a closing plate that closes the extended recess.

  Further, in the present invention, a support frame that rotatably supports the blocking plate on the stone gravel recovery tank, a long link arm that is rotatably connected to the support frame, and the link arm that is connected to the stone gravel. A main body frame having a parallel link mechanism that supports the recovery tank so as to be movable up and down, and the lower end of the link arm supports the gravel recovery tank when the stone recovery tank moves to the loading position. The link arm ascends with respect to the parallel link mechanism, rotates the closing plate via the support frame to open the extended recess, and the gravel recovery tank moves to the discharge position. The lower end of the link arm may be separated from the main body frame, and the closing plate may be rotated through the support frame by its own weight to close the extended recess.

  Furthermore, in this invention, you may arrange | position the soil guide plow which guides soil to the said digging part side in the left-right position of the said digging part, and the front position of the right-and-left end part of the said soil treatment conveyor. .

  In the present invention, the soil guide plow may be a disk-shaped disk plow having a concave surface, and may be arranged at an angle that widens the concave surface inward and forward. .

  Furthermore, in the present invention, the disk plow is rotatably supported and may be configured to be idled or rotatable.

  Further, in the present invention, the soil treatment conveyor has a plurality of soil treatment rollers arranged in parallel, and each soil treatment roller has a plurality of scraper discs having rotating radial projections for crushing clots in the axial direction with a predetermined disc interval. Among the soil treatment rollers arranged on the stone gravel recovery tank, one or more soil treatment rollers from the last row have fewer rotating radial protrusions than other soil treatment rollers. Scraper disks may be arranged at a wider interval than the disk interval.

  ADVANTAGE OF THE INVENTION According to this invention, the gravel selected from the soil block of a farm field can be thrown in into a gravel collection tank, and it can collect | recover efficiently.

It is a front perspective view which shows embodiment of the stone debris removal machine which concerns on this invention. It is a back perspective view showing the stone gravel removal machine of this embodiment. It is a top view which shows the stone gravel removal machine of this embodiment. In this embodiment, it is the schematic which shows the interlocking relationship of a soil treatment conveyor. It is a front center longitudinal cross-sectional view of the stone gravel removal machine of this embodiment. In this embodiment, it is the back view and side view which show the state in which (a) the stone gravel collection tank is in the loading position, and (b) the stone gravel collection tank is in the discharge position. In this embodiment, it is a perspective view which shows the stone gravel collection | recovery tank of the state which (a) the obstruction board open | released the extended recessed part, and (b) the state which the obstruction board closed the extended recessed part. In this embodiment, it is a figure which shows operation | movement of a movable conveyor part. In this embodiment, it is a figure which shows a mode that a stone gravel collection | recovery tank moves to a discharge position from an injection position. In this embodiment, it is a perspective view which shows the gravel removal machine provided with the structure which drives a disk plow with a PTO (Power Take Off) mechanism. In this embodiment, it is a perspective view which shows the stone debris removal machine provided with the structure which drives a disk plow hydraulically.

  Hereinafter, an embodiment of a stone debris removal machine according to the present invention will be described with reference to the drawings. FIG. 1 to FIG. 3 are a front perspective view, a rear perspective view, and a plan view, respectively, showing a gravel removal machine 1 of the present embodiment.

  As shown in FIG. 1 to FIG. 3, the stone gravel remover 1 of the present embodiment mainly breaks the main body frame 2, a digging unit 3 that digs up a soil block in the field, and a clot that the digging unit 3 digs up. A soil treatment conveyor 4 for sorting out stone gravel, a gravel collection tank 5 for collecting the stone gravel selected by the soil treatment conveyor 4, and a conveyor retracting means for retracting the soil treatment conveyor 4 to the outside of the stone gravel collection tank 5 6 and a soil guide plow 7 provided at the left and right positions of the digging portion 3. Hereinafter, each component will be described in more detail.

  The main body frame 2 is for supporting the above-described components to constitute the stone gravel removal machine 1 of the present embodiment. In the present embodiment, as shown in FIGS. 1 to 3, the main body frame 2 has a hitch 21 for towing with a tractor or the like in the front, and a pair of tires 22 and 22 are rotatable in the rear. It is pivotally supported. In addition, although the gravel removal machine 1 of this embodiment has a tow type structure, it is not limited to this structure, A self-propelled type may be sufficient.

  The digging unit 3 plays a role of digging up a soil block in the field and passing it to the soil treatment conveyor 4. In this embodiment, as shown in FIGS. 1 and 3, the digging unit 3 includes a plurality of digging blades 31 having a mountain-shaped tip, and is fixed to the front end of the soil treatment conveyor 4. ing.

  The soil treatment conveyor 4 plays a role of crushing the earth lump dug up by the digging unit 3 and selecting the gravel. In this embodiment, as shown in FIGS. 1 and 3, the soil treatment conveyor 4 has a plurality of soil treatment rollers 41 arranged in parallel in the front-rear direction of the machine body. Each soil treatment roller 41 rotates in conjunction with a sprocket 42 and a chain 43 provided at the left and right ends.

  In the present embodiment, as shown in FIG. 4, twelve soil treatment rollers 41 (R1 to R12) have sprockets 42 at either one of the left and right end portions. The driving force of the double sprocket 44 connected to the double shaft reducer (not shown) is wound around the chain 43 so as to be transmitted to all the soil treatment rollers 41. In FIG. 4, the double sprockets 44 are illustrated outside the soil treatment rollers 41 in order to facilitate understanding of the winding relationship of the chains 43, but are actually disposed above the sprockets 42 and the chains 43. .

  Moreover, in this embodiment, since the soil treatment conveyor 4 throws stone gravel into the approximate center position of the stone gravel recovery tank 5, as shown in FIG. 3 and FIG. It extends to the inside. On the other hand, as will be described later, the stone gravel recovery tank 5 is configured to be movable between a charging position and a discharging position. For this reason, in this embodiment, in order to prevent the stone gravel recovery tank 5 from colliding with the soil treatment conveyor 4, the soil treatment conveyor 4 is configured to be retractable to the outside of the stone gravel recovery tank 5.

  Specifically, as shown in FIGS. 4 and 5, the soil treatment conveyor 4 includes a fixed conveyor unit 45 fixed to the main body frame 2 and a movable unit rotatably connected to the terminal end of the fixed conveyor unit 45. It is comprised from the conveyor part 46. FIG. In the fixed conveyor unit 45, soil treatment rollers 41 (R1 to R8) arranged from the digging unit 3 to the outside of the gravel recovery tank 5 are unitized. On the other hand, in the movable conveyor section 46, soil treatment rollers 41 (R8 to R12) extending from the end of the fixed conveyor section 45 to the inside of the stone gravel collection tank 5 are unitized. Then, as shown in FIG. 5, the movable conveyor unit 46 is rotated up and down around the rotation axis of the soil treatment roller 41 (R8) provided at the end of the fixed conveyor unit 45 by the conveyor retracting means 6. It has become.

  In this embodiment, the soil treatment conveyor 4 includes the fixed conveyor unit 45 and the movable conveyor unit 46, and only the movable conveyor unit 46 is retracted. However, the present invention is not limited to this configuration. For example, the entire soil treatment conveyor 4 is configured to be rotatable around the rotation axis of the first soil treatment roller 41 (R1), and the end of the soil treatment conveyor 4 is retracted to the outside of the stone gravel collection tank 5. The entire soil treatment conveyor 4 may be rotated. In the present embodiment, the retracting means of the movable conveyor unit 46 is moved to the retracted position by rotating the operating conveyor unit 46 in view of the ease of retracting. However, the present invention is not limited to this, and it may be moved to the retracted position by sliding, or may be moved to the retracted position by another configuration / operation.

  Moreover, in this embodiment, as shown in FIGS. 1, 3, and 5, each soil treatment roller 41 includes a plurality of scraper disks 48 each having a rotating radial projection 47 for crushing a mass of a predetermined disk in the axial direction. They are arranged at intervals. Moreover, in order to adjust the input position to the stone gravel recovery tank 5 according to the size of the stone gravel, the two soil treatment rollers 41 (R11, R12) from the last row are the other soil treatment rollers 41 (R1 to R10). ), The scraper disk 48 having a small number of rotating radial protrusions 47 is arranged at a wider interval than the disk interval.

  In addition, the number of the soil treatment rollers 41 which arrange | position the scraper disk 48 with few rotation radial protrusions 47 at a wide space | interval is not limited to two. Specifically, when introducing the gravel, as long as the soil treatment roller 41 is disposed on the gravel recovery tank 5, one or more soil treatment rollers 41 from the last row may be configured as described above. . Thereby, relatively small stones fall out to the near side of the stone recovery tank 5, while relatively large stones are thrown into the back of the central part of the stone recovery tank 5. It will be well accommodated.

  The stone gravel recovery tank 5 is for recovering the stone gravel selected by the soil treatment conveyor 4. In the present embodiment, the stone gravel recovery tank 5 has an input position for inputting the stone gravel selected by the soil treatment conveyor 4 as shown in FIG. 6 (a), and an input as shown in FIG. 6 (b). It is configured to be movable between a discharge position for discharging the collected stone gravel outside the field. Specifically, the gravel collection tank 5 is raised and lowered by controlling expansion and contraction of the tank hydraulic cylinder 51. The drive source for the stone gravel recovery tank 5 is not limited to a hydraulic cylinder, and may be an electric cylinder or the like.

  Moreover, in this embodiment, as shown in Fig.7 (a), the stone gravel collection | recovery tank 5 has the concave extended recessed part 52 formed in the side which faced the front. The extended recess 52 serves as an opening for extending the end portion of the soil treatment conveyor 4 to the center position inside the gravel recovery tank 5, while moving the gravel recovery tank 5 to the discharge position. There is a risk that stones collected from the opening will fall off. Therefore, in the present embodiment, when the gravel recovery tank 5 is in the charging position, as shown in FIG. 7A, the extended recess 52 is opened and the gravel recovery tank 5 moves. As shown in FIG. 7B, it has a closing plate 53 that closes the extended recess 52.

  As shown in FIG. 7, the structure for opening and closing the closing plate 53 includes a support frame 54 that rotatably supports the closing plate 53 on the stone gravel collection tank 5, and a length that is rotatably connected to the support frame 54. A scale-like link arm 55 and a parallel link mechanism 56 that supports the link arm 55 with respect to the stone gravel recovery tank 5 so as to be movable up and down are provided.

  The support frame 54 is formed in a substantially T shape in which the vertical bar 54 a and the horizontal bar 54 b are orthogonal to each other, and one end of the horizontal bar 54 b is rotatably supported by the upper bearing portion 57 of the stone gravel recovery tank 5. Further, the upper end of the link arm 55 is rotatably connected to the horizontal bar 54b of the support frame 54, and the lower end of the link arm 55 is in contact with the main body frame 2 supporting the gravel recovery tank 5. 55a is formed. The parallel link mechanism 56 has a swing arm 59 that is rotatably supported by the lower bearing portion 58 of the stone gravel recovery tank 5, and the tip of the swing arm 59 is located at a substantially central position of the link arm 55. It is connected rotatably.

  With this configuration, as shown in FIG. 7A, when the stone gravel collection tank 5 moves to the loading position, the abutting portion 55a at the lower end of the link arm 55 abuts on the main body frame 2, and the link arm 55 is parallel. Ascending relative to the link mechanism 56, the closing plate 53 is rotated via the support frame 54 to open the extended recess 52. On the other hand, when the gravel recovery tank 5 is moved to the discharge position, as shown in FIG. 7B, the contact portion 55a at the lower end of the link arm 55 is separated from the main body frame 2, and the closing plate 53 is supported by its own weight. The extended recess 52 is closed by rotating downward via 54.

  In this embodiment, the closing plate 53 is automatically opened and closed in conjunction with the operation of the stone gravel collection tank 5, but the present invention is not limited to this configuration. That is, when the stone recovery tank 5 is in the loading position, the closing plate 53 opens the extended recess 52, and when the stone recovery tank 5 moves to the discharge position, the closing plate 53 closes the extension recess 52. If it is a thing, you may make it provide a drive source separately and can open and close the obstruction board 53 independently of operation | movement of the stone gravel collection | recovery tank 5. FIG.

  The conveyor retracting means 6 is for retracting the end portion of the soil treatment conveyor 4 to the outside of the stone gravel recovery tank 5. In the present embodiment, the conveyor retracting means 6 is constituted by a conveyor hydraulic cylinder 61 that can be expanded and contracted, and one end of which is rotatable with respect to the main body frame 2 as shown in FIGS. And the other end is rotatably connected to an auxiliary frame 62 provided on the movable conveyor portion 46.

  With this structure, when the gravel recovery tank 5 is in the charging position, as shown in FIG. 8A, when the conveyor hydraulic cylinder 61 is extended, the movable conveyor portion 46 is lowered around the rotation axis (R8). The end portion of the soil treatment conveyor 4 is extended to a substantially central portion of the stone gravel recovery tank 5. On the other hand, when the stone recovery tank 5 moves between the loading position and the discharging position, if the conveyor hydraulic cylinder 61 is shortened, as shown in FIGS. 5, 8 </ b> B, 8 </ b> C, the auxiliary frame 62. Is drawn forward. For this reason, the movable conveyor part 46 rises around the rotation axis (R8), and the end part of the soil treatment conveyor 4 is retracted to the outside of the stone gravel recovery tank 5.

  In the present embodiment, since the stone gravel recovery tank 5 simply rotates, the conveyor retracting means 6 retracts the end portion of the soil treatment conveyor 4 to the outside of the stone gravel recovery tank 5. The intent of this operation is to retract the soil treatment conveyor 4 from the trajectory of the stone gravel collection tank 5 that moves between the input position and the discharge position. Therefore, whatever the operation of the stone gravel collection tank 5 is, the soil treatment conveyor 4 may be retreated to the outside of the track.

  Moreover, in this embodiment, although the hydraulic cylinder 61 for conveyors is employ | adopted as the conveyor retracting means 6, it is not limited to this structure, If the raising / lowering operation | movement of the movable conveyor part 46 is controllable, An electric cylinder or the like may be used.

  The soil guide plow 7 plays a role of preliminarily securing a path through which the soil treatment conveyor 4 is interlocked. As described above, the soil treatment roller 41 of this embodiment is interlocked by the sprocket 42 and the chain 43 provided at the left and right ends. For this reason, when the sprocket 42, the chain 43, or a cover that covers them contacts the ground, there is a possibility that the soil cannot be dug sufficiently. Therefore, in this embodiment, as shown in FIG. 1 and FIG. 3, the soil is disposed on the center side in the left and right positions of the digging portion 3 and in front of the left and right end portions of the soil treatment conveyor 4. A soil guide plow 7 that guides in the direction of the digging portion 3 is arranged.

  The soil guide plow 7 is configured by a disk plow (disk plow), a bottom plow (hull plow), or the like. In general, disc plows and bottom plows are intended for tillage treatment in which the soil is cut, crushed, inverted, and released to loosen the uncultivated soil and create an optimum state for crop growth. To do. On the other hand, the soil guide plow 7 of this embodiment fulfill | performs the role which sends right and left soil to the center soil processing conveyor 4 side. Therefore, in this embodiment, in order to prevent crushing and reversal that increase the traction resistance, the inclination angle of the disk and the earthenware plate is reduced, and the fogging on the soil is reduced.

  In this embodiment, the soil guide plow 7 employs a disk-shaped disc plow 7 having a concave surface as shown in FIGS. 1 and 3. In order to efficiently guide the left and right soils to the center side, the concave surfaces of the disk plows 7 are arranged at an angle that expands inward and forward.

  Moreover, although the gravel removal machine 1 of this embodiment is towed by a tractor etc., traction resistance becomes very large depending on soil conditions. Generally, a tractor can produce a traction force only about 50 to 60% of the vehicle weight even when there is a margin in output. For this reason, there is a possibility that the speed cannot be increased or the work itself cannot be performed where the traction resistance is large. For this reason, in this embodiment, in order to reduce the traction resistance applied to the tractor, the disk plow 7 is rotatably supported with respect to the main body frame 2 and is configured to be idled.

  Further, in order to further reduce the traction resistance, it is possible to use a propulsive force obtained by driving and rotating the disk plow 7. For example, as shown in FIG. 10, a drive shaft 81 connected to a PTO (Power Take Off) shaft (not shown) of the tractor is connected to a power distribution device 82 provided in the main body frame 2. Then, one of the output shafts of the power distribution device 82 and the rotational drive mechanism 83 of the disk plow are connected by a drive shaft 81 so that the drive rotation is possible. The other output shaft of the power distribution device 82 is connected to an input shaft that drives a processing unit such as the soil treatment conveyor 4.

  As shown in FIG. 11, a hydraulic motor 84 is connected to the rotary shaft 23 of the disk plow 7, and the hydraulic motor 84 and a tractor hydraulic device (not shown) are connected by a hydraulic hose 85. With this configuration, the disk plow 7 can be configured to be driven and rotated. 10 and 11, two disk plows 7 are arranged on each of the left and right sides, and a total of four disk plows are used. However, the present invention is not limited to this configuration.

  Below, the effect | action by the gravel removal machine 1 of this embodiment is demonstrated.

  When removing gravel on a field with the stone gravel remover 1 of this embodiment, first, it is confirmed whether the stone gravel recovery tank 5 is arranged at the input position. Move 5 to the loading position. At this time, as shown in FIG. 7A, the abutment portion 55 a of the link arm 55 abuts on the main body frame 2 and rises relative to the parallel link mechanism 56. For this reason, when the link arm 55 lifts the support frame 54 upward, the closing plate 53 opens the extended recess 52.

  Next, it is confirmed whether or not the movable conveyor portion 46 is disposed inside the stone gravel collection tank 5. If not, the movable conveyor portion 46 is moved downward by the conveyor retracting means 6. At this time, as shown in FIG. 8A, since the closing plate 53 opens the extending recess 52, the movable conveyor 46 is extended into the stone gravel recovery tank 5 from a relatively low position. For this reason, it is not necessary to hold | maintain the terminal part of the soil treatment conveyor 4 in a high position, the body height is suppressed and stable arrangement | positioning is attained. In addition, noise and impact when the stones are put into the stones collecting tank 5 are reduced.

  Subsequently, the gravel remover 1 is pulled by a tractor or the like with each soil treatment roller 41 being rotated. As a result, the digging unit 3 digs up the soil block in the field and feeds it to the soil treatment conveyor 4. Moreover, in this embodiment, the soil guide plow 7 digs up the soil in the front position of the right-and-left end part of the soil treatment conveyor 4, and guides it to the digging part 3 side. Thereby, since the path of the left and right end portions of the soil treatment conveyor 4 is secured in advance, the work of digging up the soil and the work of selecting and removing the gravel can be performed simultaneously.

  Further, in the present embodiment, the disk plow 7 as the soil guide plow 7 has the concave surface facing inwardly widened forward, and therefore efficiently guides the soil on the left and right sides to the center side. At this time, since the disk plow 7 is pivotally supported so as to be able to idle, the frictional resistance with the soil is reduced. For this reason, the traction resistance generated when the tractor pulls the stone gravel remover 1 is reduced.

  Further, when the disk plow 7 is driven and rotated by the PTO shaft of the tractor or the hydraulic device, the disk plow 7 generates a propulsive force in the traveling direction. Because of this propulsive force, the traction resistance applied to the tractor is further reduced, so that the working speed can be improved.

  In the soil treatment conveyor 4 to which the soil mass has been sent, each soil treatment roller 41 sifts the soil while crushing the soil mass with the scraper disk 48 and sorts the gravel. And the soil treatment conveyor 4 throws the selected stones into the stone collection tank 5 from a terminal part, after conveying back. At this time, since the end portion disposed inside the gravel recovery tank 5 throws the gravel into the approximate center of the gravel recovery tank 5, the gravel is not biased in the gravel recovery tank 5 and is even. Be contained.

  In the present embodiment, the two soil treatment rollers 41 (R11, R12) from the last row screen out relatively small stones from the gap between them in front of the stone recovery tank 5, while relatively large stones. Gravel is thrown into the vicinity of the center of the stone gravel collection tank 5. Thereby, in the stone gravel recovery tank 5, stone gravel is efficiently accommodated, so that the tank capacity is effectively used.

  When the stone collection tank 5 is filled with stones, the soil treatment conveyor 4 is stopped and the stone removal machine 1 is moved out of the field, or a dump truck for loading stones is placed on the stone. Next to the gravel remover 1. Thereafter, when the auxiliary frame 62 is pulled by the conveyor retracting means 6, the movable conveyor portion 46 rotates upward and retracts to the outside of the stone gravel collection tank 5 as shown in FIGS. 8 (b) and 8 (c). As a result, no obstacles are present in the trajectory in which the stone gravel recovery tank 5 moves, so that the stone gravel recovery tank 5 can move to the discharge position.

  Subsequently, when the tank hydraulic cylinder 51 of the stone recovery tank 5 is extended, the stone recovery tank 5 moves from the input position to the discharge position in the order of FIG. 9 (a) to FIG. 9 (d). Drain the gravel. At this time, since the movable conveyor 46 is retracted to the outside of the stone gravel recovery tank 5, the stone gravel recovery tank 5 does not collide with the soil treatment conveyor 4.

  In the present embodiment, as the lower end of the link arm 55 moves away from the main body frame 2, the closing plate 53 rotates downward through the support frame 54 due to its own weight and closes the extended recess 52. For this reason, the blocking plate 53 prevents pebbles from spilling from the extended recess 52 during the rotational movement of the pebbles collection tank 5.

According to the stone debris removal machine 1 of the present embodiment as described above, the following effects are obtained.
1. The gravel selected from the soil block in the field can be thrown into the gravel recovery tank 5 without unevenness and recovered efficiently.
2. When the stone gravel collection tank 5 moves between the input position and the discharge position, it can be prevented from colliding with the soil treatment conveyor 4.
3. When the stone recovery tank 5 is moved to the discharge position, it is possible to prevent the stone gravel from spilling out from the extended recess 52.
4). The closing plate 53 can be automatically opened and closed in conjunction with the movement of the stone gravel collection tank 5.
5. The path of the left and right ends of the soil treatment conveyor 4 can be secured in advance in the field, and the soil excavation work and the stone gravel sorting and removal work can be performed in one step.
6). According to the size of the gravel, the place to be put into the gravel recovery tank 5 is adjusted, so that the gravel can be efficiently stored in the gravel recovery tank 5.
7). Traction resistance by the soil guide plow 7 can be reduced, and the traveling speed of the tractor can be improved.

  In addition, the stone gravel removal machine 1 which concerns on this invention is not limited to embodiment mentioned above, It can change suitably.

  For example, in the embodiment described above, the soil treatment conveyor 4 using a plurality of soil treatment rollers 41 has been described, but the present invention is not limited to this configuration. In other words, it has a function of sorting stones and gravel from the soil mass and transporting them to the stone collection tank 5, and when the stone collection tank 5 is in the input position, its end is located inside the stone collection tank 5. In addition, when the gravel recovery tank 5 moves from the input position to the discharge position, any soil treatment conveyor 4 is adopted as long as its end portion is retracted to the outside of the stone gravel recovery tank 5. May be.

DESCRIPTION OF SYMBOLS 1 Gravel removal machine 2 Main body frame 3 Digging part 4 Soil treatment conveyor 5 Stone gravel collection tank 6 Conveyor evacuation means 7 Soil guide plow (disc plow)
DESCRIPTION OF SYMBOLS 21 Hitch 22 Tire 23 Rotating shaft 31 Digging blade 41 Soil processing roller 42 Sprocket 43 Chain 44 Double sprocket 45 Fixed conveyor part 46 Movable conveyor part 47 Rotating radial protrusion 48 Scraper disk 51 Hydraulic cylinder for tank 52 Extension recessed part 53 Closure board 54 Support frame 54a Vertical bar 54b Horizontal bar 55 Link arm 55a Contact part 56 Parallel link mechanism 57 Upper bearing part 58 Lower bearing part 59 Oscillating arm 61 Hydraulic cylinder for conveyor 62 Auxiliary frame 81 Drive shaft 82 Power distribution device 83 Rotation drive mechanism 84 Hydraulic motor 85 Hydraulic hose

Claims (7)

A digging section that digs up the soil mass in the field,
A soil treatment conveyor that crushes the lump dug up by this digging unit and sorts stone gravel;
A gravel removal machine having a gravel recovery tank movable between an input position for inputting gravel selected by this soil treatment conveyor and an output position for discharging the input gravel,
Before the gravel recovery tank moves from the loading position to the discharge position, the conveyor evacuates the end of the soil treatment conveyor disposed inside the gravel recovery tank to the outside of the gravel recovery tank. Has means ,
An extension recess for extending the end portion of the soil treatment conveyor to the inside of the stone gravel recovery tank is formed on a side surface of the stone gravel recovery tank, and the stone gravel recovery tank is in the charging position. In this case, the stone-removing machine has a closing plate that opens the extension recess and closes the extension recess when the stone recovery tank moves to the discharge position . The soil treatment conveyor is rotatably connected to the fixed conveyor portion disposed on the outside of the gravel recovery tank from the excavation portion and the end of the fixed conveyor portion, and on the inner side of the gravel recovery tank And a movable conveyor section extending to
The gravel removal machine according to claim 1, wherein the conveyor retracting means moves the movable conveyor unit to retract outside the stone gravel recovery tank before the stone gravel recovery tank moves to the discharge position. A support frame that rotatably supports the closing plate on the stone gravel recovery tank, a long link arm that is rotatably connected to the support frame, and the link arm that moves up and down with respect to the stone gravel recovery tank. A parallel link mechanism that is movably supported;
When the gravel recovery tank moves to the loading position, the lower end of the link arm comes into contact with the main body frame supporting the gravel recovery tank, and the link arm rises with respect to the parallel link mechanism, Rotate the closing plate through a support frame to open the extended recess,
When the stone gravel recovery tank moves to the discharge position, according to claim 1, the lower end of the link arm is the distant from the body frame, wherein the closure plate is rotated via the supporting frame under its own weight to close the extension設凹portion Or the stone debris removal machine of Claim 2 . A lateral position of the photo portion, the front of the right and left end portions of the soil treatment conveyor claims 1 to 3, are arranged soil guide plow for guiding the soil to the photo portion The stone debris removal machine according to any one of the above. 5. The stone gravel according to claim 4 , wherein the soil guide plow is formed of a disk-shaped disc plow having a concave surface, and is arranged at an angle that expands the concave surface inward and forward. Removal machine. 6. The stone pebble removing machine according to claim 5 , wherein the disk plow is rotatably supported and is configured to be idled or rotatable. The soil treatment conveyor has a plurality of soil treatment rollers arranged in parallel, and each soil treatment roller has a plurality of scraper discs having rotating radial protrusions for crushing the clumps arranged at predetermined disc intervals in the axial direction. Among the soil treatment rollers arranged on the stone gravel recovery tank, one or more soil treatment rollers from the last row are arranged such that the scraper discs having less rotational radial protrusions than the other soil treatment rollers are disposed between the disc intervals. The stone gravel remover according to any one of claims 1 to 6 , wherein the stone gravel remover is arranged with a wider interval.