JP7281766B2 - Crushed stone transfer device - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act On March 26, 2018, the applicant conducted a test on the present invention in a field in Minamisoma City, Fukushima Prefecture.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushed stone transfer device, and more particularly to a crushed stone transfer device for continuously supplying crushed stone to crushed stone charging means for charging crushed stone into a pipe-laying groove in which an underdrain is laid.

Drainage from the field is carried out by burying the underdrain in the ground of the field, and the groundwater level of the field is adjusted. As a device for laying an underdrain, a pipe-laying groove is excavated by an excavator, and a pipe that will be the underdrain is laid at the bottom of the pipe-laying groove. An underdrainage pipe laying device has been proposed in which hydrophobic material chips such as rice husks and wood chips that do not adversely affect the water are thrown in at a predetermined height (see, for example, Patent Document 1). In addition, as a device for injecting hydrophobic material chips into a pipe-laying groove after laying a pipe, a chip loading vehicle is used in which a conveyor for injecting hydrophobic material chips is arranged at the rear of a loading platform on which the hydrophobic material chips are loaded (for example, See Patent Document 2.).

JP 2011-94448 A Utility Model Registration No. 3179665

The underdrain drain pipe laying apparatus described in Patent Document 1 has the advantage that the hydrophobic material chips can be reliably thrown up to a predetermined height into the pipe-laying groove in which the pipe is laid. Since there is a limit to the size of the storage hopper, there was a drawback that the bagged hydrophobic material chips had to be put into the hopper many times during construction. In particular, compared to using rice husks or wood chips as hydrophobic material chips, when using crushed stones, the weight increases, so it is difficult to manually put crushed stones into the hopper, and workability is greatly improved. had a problem.

In addition, although the chip loading vehicle described in Patent Document 2 has the advantage that a large amount of hydrophobic material chips can be loaded on the loading platform and the hydrophobic material chips can be loaded into the pipe laying groove over a long distance. However, when crushed stone is used, the center of gravity is at a high position, so there is a risk of tipping over when climbing over a ridge, and the height of the hydrophobic material chips varies depending on the traveling speed and conveyor speed. There were drawbacks. Furthermore, when putting crushed stone into pipe-laying trenches, which can exhibit good water permeability over a long period of time, it is necessary to work while being careful not to let the crushed stone fall into the surroundings. was difficult.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a crushed-stone transfer apparatus capable of transferring a predetermined amount of crushed-stone over a long distance of a crushed-stone-feeding groove and continuously supplying the crushed-stone to a crushed-stone-feeding means.

In order to achieve the above object, a crushed stone transfer device of the present invention is a crushed stone transfer device for charging crushed stones into a crushed stone charging groove formed in a field via crushed stone charging means, the crushed stone transfer device comprising: A box-shaped crushed stone loading table with an upper opening which is detachably installed on a bed tiltably provided on a frame of a crawler dump, and a crushed stone falling from the crushed stone loading table into the crushed stone feeding groove. The crushed stone loading table has a crushed stone drop opening opened at the lower end in the tilting direction of the loading platform, and a guide member for guiding the crushed stone on the crushed stone loading table toward the crushed stone dropping opening. A conveyor support member for supporting the conveyor is provided at the rear end of the loading platform, and the conveyor supporting member rotates about an axis in a direction parallel to the rear edge of the loading platform. a main support shaft that can be provided; a plurality of hanging shafts that protrude downward from a plurality of locations on the main support shaft; a horizontal shaft; and a rotation prevention member for the main support shaft, one end of which is connected to the frame of the crawler dump and the other end of which is connected to the end of the main support shaft, and the conveyor includes a plurality of horizontal shafts. When the base end of the conveyor frame in the conveying direction of the conveyor frame is arranged below the crushed stone drop port, the tip end of the conveyor frame protrudes to the side of the crawler dump and enters the crushed stone throwing means. In a crushed stone conveying state for transferring crushed stones, and in a state in which the conveyor is in the crushed stone conveying state and the conveyor is operated, the loading platform is tilted to drop the crushed stones on the crushed stone loading table from the crushed stone drop port to the base end of the conveyor. It is characterized in that the crushed stone is transferred from the leading end of the conveyor to the crushed stone charging means.

In particular, in the crushed stone transfer apparatus of the present invention, the plurality of hanging shafts include a first hanging shaft protruding downward from the central portion of the main support shaft and two hanging shafts extending downward from both left and right ends. The conveyor comprises a second vertical shaft and a third vertical shaft projecting from each other, and a first horizontal shaft, a second horizontal shaft and a third horizontal shaft projecting horizontally from lower ends of the respective vertical shafts. The frame includes a first pipe member provided at the base end portion in the conveying direction of the conveyor through which the first horizontal shaft can be inserted, and a second pipe member provided at the tip portion of the conveyor frame through which the second horizontal shaft can be inserted. The first horizontal shaft is inserted into the first pipe member, and the intermediate portion of the conveyor frame is placed on the second horizontal shaft to enter the crushed stone conveying state and the second pipe. By inserting the second horizontal shaft through the material and placing the base side of the conveyor frame on the third horizontal shaft, the conveyor as a whole is placed behind the crawler dump and placed in a stored state. .

Further, the crushed stone drop port is open at one end in the width direction of the lower end of the crushed stone loading platform in the tilting direction of the bed, and the crushed stone drop port is provided with an opening and closing door capable of adjusting the opening amount of the crushed stone drop port. It is characterized by

In addition, the crushed stone charging means is a crushed stone charging device integrated with a groove forming portion that advances in the direction of groove formation by the traveling body, and the crushed stone charging device is provided at the front in the traveling direction and has a sharp tip. and a crushed stone input portion connected to a rear portion of the groove forming blade portion, the crushed stone input portion being formed by the groove forming blade portion. It is characterized by comprising a throwing section inserted into a crushed stone throwing groove, and a hopper section continuously provided above the throwing section into which the crushed stones from the tip of the conveyor are thrown.

Another form of the crushed stone input means is a crushed stone input device that moves along a crushed stone input groove previously formed in a field by a traction means connected to the frame of the crawler dump. has a hopper part with an open top, a crushed stone charging part connected to the lower part of the hopper part and inserted into the crushed stone charging groove, and a crushed stone charging groove provided on both sides of the hopper part. It is characterized by comprising an insertion amount regulating part that regulates the amount of insertion of the crushed stone input part into.

Further, the conveyor is provided with a crushed stone slider at the tip of the conveyor frame for feeding the crushed stone into the hopper portion while preventing the crushed stone conveyed by the conveyor from scattering in the width direction of the conveyor. The crushed stone slider is provided at the tip of the conveyor frame so as to be rotatable in the vertical direction. It is characterized by being movably formed.

Further, as the crushed stone input means, a crushed stone input chute that moves along a crushed stone input groove previously formed in a field, the base end of the crushed stone input chute being attached to the tip of the conveyor frame and It is also possible to use a chute member having a downward slope toward the top, the tip of which is inserted into the crushed stone input groove, and crushed stone guide portions provided on both side edges of the chute member, respectively. .

According to the crushed stone transfer apparatus of the present invention, the conveyor is operated in a state in which the crushed stone can be transferred from the tip of the conveyor to the crushed stone input means, and the loading platform is tilted at a preset angle to move the crushed stone onto the crushed stone loading table. The crushed stone can be dropped from the crushed stone drop port to the base end of the conveyor, and the crushed stone can be transferred from the tip of the conveyor to the crushed stone input means. , a predetermined amount of crushed stone can be continuously thrown into the crushed stone throwing groove.

1 is a side view showing a first embodiment of a crushed stone transfer device of the present invention; FIG. FIG. 11 is a rear view of the crushed stone transporting device showing a state before attachment of the conveyor. FIG. 11 is a rear view of the crushed stone transfer device similarly showing a state in which the conveyor is mounted in the stored state; It is a side view of the principal part which similarly shows the state which mounted|worn the conveyor in the accommodated state. FIG. 11 is a rear view of the crushed stone transfer device showing a state in which the conveyor is mounted in a crushed stone conveying state. It is a side view which similarly shows the state during construction which made the loading platform inclined. FIG. 4 is a rear view showing a state in which crushed stones are being transferred to the hopper section of the crushed stone input device via the crushed stone slider attached to the tip of the conveyor. It is also a plan view. FIG. 4 is a rear view of a main part of a conveyor equipped with crushed stone sliders; FIG. 4 is a rear view showing an example in which a winch for moving the crushed stone slider up and down is provided. FIG. 4 is a side view showing an example in which an opening/closing door is provided at the crushed stone drop opening; It is a side view which similarly shows the state during construction which inclined the loading platform and opened the opening-and-closing door. Fig. 10 is a side view showing a second embodiment of the crushed stone transfer device of the present invention, showing a state in which crushed stones are transferred to a crushed stone feeder towed by a crawler dump. Similarly, it is a rear view of the main part. Fig. 10 is a side view showing a third embodiment of the crushed-stone transporting apparatus of the present invention, showing a state in which crushed stones are being charged into the crushed-stone charging groove from the tip of the conveyor via the crushed-stone charging chute. Similarly, it is a rear view of the main part.

1 to 6 show a first embodiment of the crushed stone transfer device of the present invention. A crushed stone transfer device 11 shown in this embodiment is for transferring crushed stones to be thrown into a crushed stone input groove 10 formed in a field. A box-shaped crushed stone loading table 14 with an upper opening which is detachably installed on a tiltable bed 13, and a conveyor 16 for transferring the crushed stone dropped from the crushed stone loading table 14 to a crushed stone input means 15. I have it. A small generator 11a, which serves as a power source for the conveyor 16, is mounted on the front end of the frame 12a.

The crushed stone loading table 14 is provided with a crushed stone drop opening 17 that opens at one end in the width direction of the lower end of the bed in the inclined direction, and a guide member 18 that guides the crushed stone on the crushed stone mounting table 14 toward the crushed stone dropping opening 17. there is The crushed stone loading base 14 rises at the front along with the tilting of the loading platform 13 about the rear end of the frame 12a, and causes the mounted crushed stone to slide down to the rear and drop onto the conveyor 16 through the crushed stone drop port 17. is formed as

A conveyor support member 19 for supporting the conveyor 16 is provided at the rear end of the loading platform 13 . The conveyor support member 19 includes a main support shaft 20 which is rotatable about its axis in a direction parallel to the rear edge of the cargo bed 13, and a main support shaft 20 which extends downward from the center of the main support shaft 20. A first hanging shaft 21 that protrudes, a second hanging shaft 22 and a third hanging shaft 23 that protrude downward from two locations on the left and right ends, and 21, 22, and 23 of each hanging shaft. A first horizontal shaft 24, a second horizontal shaft 25, and a third horizontal shaft 26 project horizontally rearward from the lower end, and are provided in a direction parallel to the side edge of the loading platform 13, and the front end is A rotation prevention member 27 for the main support shaft is fixed to the front end of the frame 12a of the crawler dump truck 12 and connected to one end of the main support shaft 20 at the rear end.

The conveyor 16 includes a first pipe member 29 provided at the base end portion 28a of the conveyor frame 28 and through which the first horizontal shaft 24 can be inserted, and a first pipe member 29 provided at the distal end portion 28b of the conveyor frame 28 and the second horizontal shaft. and a second pipe material 30 through which the pipe 25 can be inserted. Then, as shown in FIG. 3, the second horizontal shaft 25 is inserted through the second pipe member 30, and the base side of the conveyor frame 28 is placed on the third horizontal shaft 26, thereby moving the conveyor 16. 5, the first horizontal shaft 24 is inserted through the first pipe member 29, and the conveyor is placed on the second horizontal shaft 25, as shown in FIG. By placing the middle part of the frame 28, the base end 16a of the conveyor 16 is arranged below the crushed stone drop port 17, and the tip end 16b of the conveyor 16 protrudes to the side of the crawler dump 12, thereby moving the crushed stone. It is formed so as to be in a crushed stone conveying state in which crushed stones are transferred to the injection means 15 .

As shown in FIG. 6, crushed stones are fed into the crushed stone feeding groove 10 by tilting the loading platform 13 and placing the crushed stones on the crushed stone loading table 14 while the conveyor 16 is in the crushed stone conveying state and the conveyor 16 is operated. is dropped from the crushed stone drop port 17 onto the base end portion 16a of the conveyor 16, and the crushed stone is transferred from the tip end portion 16b of the conveyor 16 to the crushed stone input means 15. At this time, even if the loading platform 13 is tilted, the rotation of the main support shaft 20 is prevented by the rotation prevention member 27, so that even if the tilting angle of the loading platform 13 changes, the vertical shafts will not rotate. Since each horizontal axis maintains a horizontal state, the conveyor 16 does not incline in the width direction (apparatus advancing direction) during construction, and a predetermined posture of conveying state can be maintained.

7 to 9 show an example of a state during construction using the crushed stone transfer device shown in the above embodiment. In the crushed stone transfer device 11 used in this example of use, the crushed stones dropped from the conveyor 16 are prevented from being scattered in the width direction of the conveyor, and the crushed stones are reliably dropped into the crushed stone input means 15 below the tip of the conveyor 16. A crushed stone slider 31 is provided for The crushed stone slider 31 is formed by erecting guide pieces 31a on both sides in the width direction of a flat plate-shaped base portion to form a U-shaped cross section. The chain is attached to the tip of a support rod 33 which is detachably engaged with the second pipe material 30 so as to be capable of rotating in the vertical direction, and whose tip side is detachably inserted into a support tube 32 provided at the top of the tip of the conveyor frame 28 . It is supported via a suspension member 33a such as.

On the other hand, as shown in FIGS. 7 and 8, the crushed stone throwing means 15 used in this example of use is a groove-forming unit integrated type which is pulled by a traveling body 34a such as a tractor and advances in the groove-forming direction. This crushed stone charging device 34 is provided in the front part in the traveling direction, and includes a groove forming blade portion 35 whose tip is sharpened and inserted into the ground, and the groove forming blade portion It has a crushed stone input part 36 connected to the rear part of 35 . The crushed stone input section 36 includes an input section 36 a inserted into the crushed stone input groove 10 formed by the groove forming blade section 35 , and an input section 36 a continuously provided above the input section 36 a to drop from the tip 16 b of the conveyor 16 . and an upwardly flared hopper portion 36b for receiving crushed stone.

The crushed stone feeding device 34 and the crushed stone transfer device 11 with the slanted loading platform 13 are driven at the same speed in the groove forming direction, and the crushed stone is conveyed from the conveyor 16 in the state of conveying the crushed stone. This is done by transferring the crushed stone to the hopper portion 36b. As a result, the crushed stone can be continuously thrown from the crushed stone throwing portion 36 into the crushed stone throwing groove 10 formed by the groove forming blade portion 35 .

In addition, even if the tip of the conveyor 16 has to be positioned far from the hopper portion 36b in the preparatory stage before charging the crushed stone due to the positional relationship between the crushed stone transfer device 11 and the crushed stone charging device 34, the crushed stone slider 31 can be moved. After setting the positional relationship between the crushed stone transfer device 11 and the crushed stone input device 34 in the detached state, the crushed stone slider 31 is attached to the conveyor 16, thereby preventing the crushed stones from being scattered by the guide piece 31a and conveying the crushed stones by the conveyor 16. The crushed stone can be reliably put into the hopper portion 36b through the crushed stone slider 31.例文帳に追加

Furthermore, as shown in FIG. 10, the crushed stone slider 31 can be moved up and down by a winch 37 . The winch 37 can be supported on the rear part of the loading platform 13 or the crushed stone mounting base 14 via an appropriate bracket. As a result, the position of the crushed stone slider 31 can be easily adjusted by operating the winch 37 . Depending on the positional relationship with the crushed stone throwing device 34, the crushed stone slider 31 can be hung downward from the tip of the conveyor 16 as indicated by the imaginary line in FIG. By forming only the portion 31c to be bendable upward, it is possible to more easily and reliably adjust the position with the crushed stone throwing device .

11 and 12 show an example in which the crushed stone drop port 17 is provided with an open/close door 40 capable of adjusting the opening amount of the crushed stone drop port 17, that is, the crushed stone drop amount. The opening/closing door 40 has an upper edge attached to the crushed stone mounting base 14 via a hinge 40a. , a winch 42 for operating the opening/closing door 40 in the opening direction is provided via a wire 42a.

In a normal state before construction, the opening/closing door 40 is kept closed by the action of the weight member 41. When dropping the crushed stone from the crushed stone drop port 17 during construction, the winch 42 is operated and the wire 42a is opened. The opening/closing door 40 can be opened by winding up. The opening angle of the opening/closing door 40 may be appropriately determined according to conditions such as the amount of crushed stones to be thrown into the crushed stone feeding groove 10 and the traveling speed of the crushed stone transfer device 11 .

In addition, by providing such an opening and closing door 40, it is possible to prevent the crushed stone falling from the crushed stone dropping port 17 from overcoming the conveyor 16 and falling backward, and the crushed stone falling from the crushed stone dropping port 17 during movement before construction. Therefore, the amount of crushed stone loaded on the crushed stone loading table 14 can be increased. Furthermore, instead of the weight member 41, a spring that biases the opening/closing door 40 in the closing direction can be used, and the opening/closing of the opening/closing door 40 can be indirectly performed via a lever or the like.

13 and 14 show a second embodiment of the crushed stone transfer device of the present invention. The crushed stone input means in the crushed stone transfer apparatus shown in this embodiment moves along the crushed stone input groove 10 previously formed in the field by a pulling means 51 such as a wire or rod connected to the frame 12a of the crawler dump 12. A crushed stone thrower 52 is used.

The crushed stone input device 52 includes a hopper portion 53 whose upper side is opened in an expanded state, a crushed stone input portion 54 connected to the lower portion of the hopper portion 53 and inserted into the crushed stone input groove 10, and the hopper portion 53. are provided on both sides of the crushed stone feeding groove 10 to regulate the amount of insertion of the crushed stone throwing portion 54 into the crushed stone throwing groove 10 .

With the crushed stone input device 52 having the crushed stone input part 54 inserted into the crushed stone input groove 10 connected to the crawler dump 12 by the traction means 51, the crushed stone transfer device 11 with the bed 13 inclined travels along the crushed stone input groove 10. By transferring the crushed stone from the conveyor 16 in the crushed stone conveying state to the hopper part 53 while moving the crushed stone, the crushed stone can be thrown into the crushed stone throwing groove 10 from the crushed stone thrower 52 . In addition, in this embodiment, in order to reliably transfer the crushed stone from the tip 16b of the conveyor 16 to the hopper 53, the intermediate part is bent downward so as to correspond to the positional relationship between the tip 16b of the conveyor 16 and the hopper 53. A crushed stone slider 31 having a curved shape is used.

15 and 16 show a third embodiment of the crushed stone transfer device of the present invention. Crushed stone input means in the crushed stone transfer apparatus shown in this embodiment uses a crushed stone input chute 61 that moves along a crushed stone input groove 10 that has been formed in a field in advance. The crushed stone input chute 61 includes a flat plate-like chute member 62, crushed stone guide portions 63, 63 provided on both side edge portions of the chute member 62, and a base end portion of the chute member 62, which is provided in the above-described second direction. 2 and a conveyor engaging portion 64 that rotatably engages the pipe material 30 .

In this embodiment, the tip 61a of the crushed-stone charging chute 61, which is inclined downward, is inserted into the crushed-stone charging groove 10 by an appropriate amount, and the crushed-stone transporting device 11 is caused to travel along the crushed-stone charging groove 10. The crushed stone dropped from the tip 16b of the conveyor 16 in the conveying state can be thrown into the crushed stone throwing groove 10 by the crushed stone throwing chute 61. As shown in FIG.

In each embodiment, the crushed stone drop opening is opened at one end in the width direction of the lower end of the crushed stone loading table in the tilting direction of the bed, but it may be provided at the center in the width direction. In addition, the mounting means of the conveyor can also be used by appropriately combining brackets, arms, etc. according to conditions such as the length of the conveyor.

10 Crushed stone input groove 11 Crushed stone transfer device 11a Small generator 12 Crawler dump 12a Frame 13 Loading platform 14 Crushed stone loading unit 15 Crushed stone input means 16 Conveyor 16a Base end 16b...tip part 17...crushed stone drop port 18...guide member 19...conveyor support member 20...main support shaft 21...first hanging shaft 22...second hanging shaft 23...third hanging Axes 24 First horizontal shaft 25 Second horizontal shaft 26 Third horizontal shaft 27 Anti-rotation member 28 Conveyor frame 28a Base end 28b Tip end 29 First Pipe member 30 Second pipe member 31 Crushed stone slider 31a Guide piece 31b Engagement portion 31c Tip end 32 Support tube 33 Support rod 33a Hanging member 34 Crushed stone Input device 34a Traveling body 35 Groove forming blade 36 Crushed stone input unit 36a Input unit 36b Hopper 37 Winch 38 Guide 39 Wire 40 Open/close door 40a Hinge 41 Weight member 42 Winch 42a Wire 51 Towing means 52 Crushed stone input device 53 Hopper section 54 Crushed stone input section 55 Insertion amount regulation section 61 Crushed stone input chute , 61a... Tip part, 62... Chute member, 63... Crushed stone guide part, 64... Conveyor engagement part

Claims (10)

A crushed stone transfer device for throwing crushed stones into a crushed stone throwing groove formed in an agricultural field via a crushed stone throwing means, wherein the crushed stone transfer device is mounted on a bed tiltably provided on a frame of a crawler dump. a box-shaped crushed stone loading table with an upper opening which is removably installed in the The crushed stone loading table has a crushed stone drop opening opened at the lower end in the direction of inclination of the crushed stone loading table, and a guide member for guiding the crushed stone on the crushed stone loading table toward the crushed stone dropping opening. A conveyor support member is provided for supporting, and the conveyor support member includes a main support shaft rotatable about an axis in a direction parallel to the rear edge of the cargo bed, and a main support shaft. A plurality of vertical shafts projecting downward from a plurality of locations, a plurality of horizontal shafts projecting horizontally from lower ends of the vertical shafts, and one end of which is connected to the frame of the crawler dump, and a rotation prevention member for the main support shaft, the other end of which is connected to the end of the main support shaft. When the end portion is arranged below the crushed stone drop port, the tip portion of the conveyor frame protrudes to the side of the crawler dump to enter a crushed stone conveying state in which crushed stone is transferred to the crushed stone input means, and the conveyor moves to the crushed stone conveying state. The crushed stone on the crushed stone loading table is dropped from the crushed stone drop port to the base end of the conveyor by inclining the loading platform while the conveyor is in operation. A crushed stone transfer device characterized by being in a state of transferring. The plurality of hanging shafts include a first hanging shaft projecting downward from the central portion of the main support shaft, second hanging shafts projecting downward from both left and right ends, and A third vertical shaft, and a first horizontal shaft, a second horizontal shaft, and a third horizontal shaft projecting horizontally from lower ends of the respective vertical shafts. a first pipe member provided at a portion of the conveyor frame through which the first horizontal shaft can be inserted; and a second pipe member provided at the leading end of a conveyor frame through which the second horizontal shaft can be inserted; By inserting the first horizontal shaft through the material and placing the intermediate portion of the conveyor frame on the second horizontal shaft, the crushed stone is conveyed, and the second horizontal shaft is inserted through the second pipe material. 2. The crushed stone transfer apparatus according to claim 1, wherein the entire conveyor is placed behind the crawler dump by placing the base of the conveyor frame on the third horizontal shaft. 3. The crushed stone transfer apparatus according to claim 1, wherein the crushed stone drop opening is open at one end in the width direction of the lower end of the crushed stone loading platform in the inclined direction. 4. The crushed stone transfer apparatus according to any one of claims 1 to 3, wherein said crushed stone dropping port has an opening/closing door capable of adjusting an opening amount of said crushed stone dropping port. The crushed stone throwing means is a crushed stone throwing device integrated with a groove forming portion that advances in the groove forming direction by the traveling body, and the crushed stone throwing device is provided at the front in the traveling direction and has a sharp tip. A groove-forming blade section inserted into the ground and a crushed-stone input section connected to the rear of the groove-forming blade section, wherein the crushed-stone input section is formed by the groove-forming blade section. 5. The method according to any one of claims 1 to 4, characterized in that it comprises a charging section inserted into the groove, and a hopper section continuously provided above the charging section and into which the crushed stone from the tip of the conveyor is charged. A crushed stone transfer device according to any one of the preceding claims. The crushed stone input device is a crushed stone input device that moves along a crushed stone input groove previously formed in a field by a traction device connected to the frame of the crawler dump, and the crushed stone input device has an upwardly widening side. A hopper part opened in an open state, a crushed stone input part connected to the lower part of the hopper part and inserted into the crushed stone input groove, and a crushed stone input part provided on both sides of the hopper part into the crushed stone input groove. The crushed stone transfer apparatus according to any one of claims 1 to 4, further comprising an insertion amount regulating portion that regulates the amount of insertion of the crushed stone. The conveyor has a crushed stone slider at the tip of the conveyor frame for feeding crushed stones into the hopper portion while preventing the crushed stones conveyed by the conveyor from being scattered in the width direction of the conveyor. The crushed stone transfer device according to claim 5 or 6. 8. The crushed stone transfer apparatus according to claim 7, wherein the crushed stone slider is provided at the tip of the conveyor frame so as to be vertically rotatable. 9. The crushed stone transfer apparatus according to claim 7, wherein the crushed stone slider has a bendable intermediate portion, and is formed so that a tip side of the crushed stone slider is rotatable upward from the intermediate portion. The crushed stone input means is a crushed stone input chute that moves along a crushed stone input groove previously formed in a farm field. A chute member having a descending slope at its tip end portion inserted into the crushed stone input groove, and crushed stone guide portions provided on both side edges of the chute member, respectively. 5. The crushed stone transfer device according to any one of 4.

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