JPH11129945A - Trailer for self-traveling vehicle, and attachment fitting device for self-traveling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To scatter chaff from a huller to a field without using manpower by a trailer connected to a tractor, to allow small turn for the trailer, and to allow attachment to be connected to the tractor. SOLUTION: Openings 31, 32, 33 are provided in a bottom plate 29 of a trailer main body 25 in its width direction. The openings 31, 32, 33 are formed to get small gradually toward its lower side to form opening lower parts 31A, 32A, 33A, and opening and closing plates 39, 40, 41 are provided. Cover plates 34, 36, 37 are provided on the openings 31, 32, 33 freely to be opened and closed. A cover body is provided for the trailer main body 25, and an opening and closing part with an opening and closing tool is provided in the cover body. A universal joint is interposed between a front traction rod and a rear traction rod 67 in a tractor and a trailer 23, and the universal joint is arranged in a more rear side than the rear end of the rear wheel of the tractor. A loaded material is discharged thereby from the openings 31, 32, 33, and small turn of the trailer 23 is allowed relating to the tractor 1. Height and width of an attachment fitting device are adjustable by constituting the attachment fitting device out of an expansible vertical frame and an expansible lateral frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trailer for a self-propelled vehicle such as a tractor and an attachment attachment device for the self-propelled vehicle.

[0002]

Conventionally, rice harvesting involves putting a combine into a field, cutting the rice, and storing the threshed paddy in a combine tank. Then, when a predetermined amount of paddy is stored in the tank, the paddy is transferred to the bed of a truck placed on the road via a combine pipe. After this, the paddy is stored in a dryer and dried, and the dried paddy is put through a rice grinder. Although a large amount of rice husk is produced by this rice rubbing machine, most of the rice husk has been incinerated conventionally.

By the way, rice husk is also effective as a fertilizer in a field, and it is desired that the rice husk be spread uniformly over the field instead of being incinerated. However, for this purpose, for example, it is conceivable to attach a bucket to the rear part of the tractor and scatter rice husk from the bucket. However, in such a case, there is a problem that the rice husk cannot be uniformly scattered in the field. Moreover, since a large amount of rice husks are discharged from the rice rubbing machine, it is difficult to cope with a relatively small amount of buckets.

In order to solve such a problem, it is conceivable to increase the size of the bucket. However, to increase the size of the bucket, it is necessary to use a trailer (towing vehicle). In this case, the entire length of the vehicle becomes longer, making it impossible to make a small turn. As a result, there arises a problem that the tractor and trailer cannot be moved to the field at right angles to the road. If the tractor cannot enter the field at a right angle when entering the field at a position lower than the road, there is a risk that the tractor may fall. Further, if the trailer cannot enter at right angles when entering the field from the road, there is a risk that the trailer, and eventually the tractor, may fall.

In addition to the trailer, the tractor's three-point link mechanism has an attachment other than a trailer, such as a shore coating machine for forming ridges, a work bench for performing various operations, a fertilizer and a vacuum car for spraying fertilizer, etc. Appointment,
Rotary, shaving rotor for leveling and shaving, blade-shaped press leveler, grader, ridge for ridge and ridge breaking, plow, or so-called mulching device, soil disinfecting machine, sowing machine for setting a sheet on a field In addition to (rotary seeders), weeding rotors, excavators at the time of harvesting, various things such as trenchers are used.

When such various attachments are mounted on the three-point link mechanism side, the mounting positions of the attachments do not coincide with the three-point link mechanism side due to differences among manufacturers, and as a result, mounting may be difficult. .

Accordingly, an object of the present invention is to provide a trailer for a self-propelled vehicle capable of solving the above-described problems and uniformly spreading a load such as chaff on a field or the like. Another object of the present invention is to provide a trailer for a self-propelled vehicle that can make a small turn. A further object of the present invention is to provide an attachment mounting device for a self-propelled vehicle, which can securely attach various attachments to a three-point link mechanism such as a tractor.

[0008]

According to the present invention, there is provided a trailer connected to a rear portion of a self-propelled vehicle via a traction device.
A trailer for a self-propelled vehicle, wherein an opening is provided in a bottom plate of a trailer body, and an opening / closing body is provided in the opening. Therefore, in the first aspect, the load can be dropped from the opening of the bottom plate through the opening by opening the opening / closing body.

According to a second aspect of the present invention, the self-propelled vehicle is a tractor, and the opening is provided in the width direction of the trailer body, and the opening / closing body is formed at a lower portion of the opening gradually narrowed downward. 2. A cover plate is detachably provided above the opening.
It is a trailer of the self-propelled vehicle described. Therefore, in the case of a load that does not need to be dropped from the opening according to the second aspect, the opening can be closed by the cover plate and the load can be loaded at this location to be used as a normal trailer.

According to a third aspect of the present invention, the opening is provided at a plurality of locations in the front-rear direction of the trailer body, and the opening / closing bodies provided at the openings respectively open and close in conjunction with each other. It is a trailer of the self-propelled vehicle described. Therefore, according to the third aspect, the load can be uniformly dropped from the openings at a plurality of openings.

According to a fourth aspect of the present invention, a cover plate is rotatably provided in each of the openings, and a front cover plate provided in the front opening is provided so as to be obliquely engageable with a front side plate of the trailer body. The trailer for a self-propelled vehicle according to claim 3, wherein the rear cover plate provided in the rear opening is provided so as to be able to be locked to the rear side plate of the trailer body in an oblique state. Therefore, according to the fourth aspect, the load is guided by the front and rear cover plates and can be dropped from the opening by engaging the front and rear cover plates with the front and rear side plates to be inclined.

According to a fifth aspect of the present invention, there is provided the trailer of the self-propelled vehicle according to the fourth aspect, wherein a cover is provided on the trailer body, and an opening / closing portion having an opening / closing member is provided on the cover. . Therefore, according to the fifth aspect, the load can be loaded on the trailer body through the opening / closing section.

According to a sixth aspect of the present invention, the traction device includes a front traction body having an attachment mounting device detachably attached to a three-point link mechanism of the tractor, and the front traction body is connected to the front traction body via a universal joint. 6. A rear traction body connected to a trailer body, wherein the universal joint is disposed behind a rear end of a rear wheel of the tractor.
A trailer for a self-propelled vehicle according to any one of the preceding claims.
Therefore, in the sixth aspect, when the tractor is driven to make a turn, the trailer can be bent with the universal joint disposed behind the rear end of the rear wheel of the tractor as the center of rotation.

According to a seventh aspect of the present invention, there is provided an attachment mounting apparatus for a self-propelled vehicle interposed between a connection receiving portion provided on the self-propelled vehicle and an attachment connected to and pulled by the connection receiving portion. An attachment attachment device for a self-propelled vehicle, wherein a connection portion of the attachment attachment device to be connected is provided on a telescopic frame. Therefore, according to the seventh aspect, the position of the connecting portion can be adjusted by expanding and contracting the frame corresponding to the connecting receiving portion.

According to the present invention, the self-propelled vehicle comprises a tractor, the connection receiving portion comprises a three-point link mechanism,
The frame includes a horizontal frame provided between the lower links of the three-point link mechanism, and a vertical frame erected from the horizontal frame and provided with an upper portion corresponding to the top link. The frame has a horizontal telescopic frame slidably provided on both sides of the horizontal main body frame, and the horizontal telescopic frame is provided so as to be connectable to the lower link side, and the vertical frame has a vertical telescopic frame at the top of the vertical main body frame. The attachment attachment device for a self-propelled vehicle according to claim 7, wherein the attachment device is slidably provided and the vertical extension frame is provided so as to be connectable to the top link side. Therefore, according to the eighth aspect, the position of the connecting portion can be adjusted by sliding the vertical and horizontal telescopic frames.

According to a ninth aspect of the present invention, the horizontal body frame is fitted to the horizontal body frame so as to be slidable, and the horizontal body frame and the horizontal body frame are provided so as to be fixed by a fixing tool. 9. An attachment for a self-propelled vehicle according to claim 8, wherein a vertical telescopic frame is fitted to and provided slidably, and the vertical main body frame and the vertical telescopic frame are provided so as to be fixed by a fixing tool. Mounting device. Therefore, in claim 9, after the horizontal and vertical telescopic frames fitted to the horizontal and vertical main body frames are respectively slid to adjust the position, the horizontal and vertical telescopic frames are horizontally moved by the fixing tool, and the vertical main body frame is moved. It is used fixed to the frame.

According to a tenth aspect of the present invention, the lower end of the horizontal telescopic frame is provided with a lower locking shaft which can be locked to a lower hook provided on the end side of the lower link, and the upper end of the vertical telescopic frame is provided with the lower locking shaft. 10. The attachment mounting device for a self-propelled vehicle according to claim 9, wherein an upper locking shaft that can be locked to an upper hook provided on an end side of the top link is provided. Therefore, in the tenth aspect, the lower and upper locking shafts can be locked and connected to the lower and upper hooks.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A tractor 1 which is a self-propelled vehicle has a small-diameter front wheel 3 for operation at a front portion of a vehicle body 2, a large-diameter rear wheel 4 for driving at a rear portion, and a handle 5 and a A seat 7 having an operation lever 6 is provided. Further, a three-point link mechanism 8 is provided at the rear of the tractor 1. The three-point link mechanism 8 includes lower links 9 and 10 provided on the lower left and right sides, and a top link 12 provided at the center of the upper part via a bracket 11, and base ends of the links 9, 10, and 12 are provided. 9A, 10A and 12A are rotatably connected to the rear of the tractor 1. A pair of right and left lifting arms 13 and 14 are provided at the rear of the tractor 1.
The lifting arms 13 and 14 are provided so as to be rotatable around base ends 13A and 14A, and base ends 15A and 16A of lift rods 15 and 16 are rotatably connected to the ends thereof. The tips 15B, 16B of the lift rods 15, 16 are rotatably connected to the lower links 9, 10, respectively. Therefore, the lower links 9, 10 can be moved up and down by operating the operation lever 6 to move up and down the elevating arms 13, 14. Also, one lifting arm 13 has a hydraulic cylinder
17 is interposed, so that the length between the tip 16A and the lower link 10 can be adjusted. Reference numeral 18 denotes a drive rotation shaft provided at a rear portion of the tractor 1, which is capable of transmitting a rotational force to various devices (not shown) attached to the three-point link mechanism 8.

Further, a mounting frame 19 is provided at the tip of the three-point link mechanism 8. In the embodiment, the top link 12 is referred to as an A-shaped frame or the like.
Are rotatably connected via a shaft 20, and are rotatably connected via a shaft 22 to the lower ends of a pair of arms 21 obliquely outward and downward from the upper portion 19A. An auxiliary rod 19B is provided between the pair of arms 21, and the mounting frame 19 is formed substantially in an A shape.

The trailer 23 connected to the tractor 1 via the three-point link mechanism 8 and the mounting frame 19 includes a trailer body 25 having wheels 24 and a hood-like cover provided so as to cover the upper part of the trailer body 25. 26 and a traction device 27 for connecting the trailer body 25 to the mounting frame 19. The trailer body 25 is provided with a bottom plate 29 inside a frame 28 having a rectangular frame shape on the plane, and on both sides thereof is provided with a side plate 30 on both sides, a rear side plate 30A, and a front side plate 30B.
Then, wheels 24 are rotatably provided on both sides of the frame 28 via an axle (not shown) at a lower rear portion. Further, a front opening 31 is provided over a substantially entire width of the bottom plate 29 at a position slightly inside the front portion of the bottom plate 29 (the traveling direction of the trailer 23). A central opening 32 is provided at a substantially central portion of the plate 29, and a rear opening 33 is provided at a position slightly inside the rear portion of the bottom plate 29 (in the direction opposite to the traveling direction of the trailer 23) over substantially the entire width of the bottom plate 29. Then, a plate-shaped front cover plate 34 is provided in the front opening 31. The front cover plate 34 is rotatably connected to the base end 34A by a shaft 35 provided on the front side of the front opening portion 31, and the front end 34B is formed to a length that can be locked to the upper end of the front side plate 30B. ing. Central opening
32 is provided with a plate-shaped central cover plate 36. The center cover plate 36 rotatably connects the base end 36A by a shaft 36C provided at the rear of the center opening 32, and the distal end 36B side has openings 32, 33.
It is designed to overlap the location of the bottom plate 29 between them. A rear cover plate 37 is provided in the rear opening 33. The rear cover plate 37 is rotatably connected to the base end 37A by a shaft 38 provided on the other side of the rear opening 33, and the front end 37B is formed to a length that can be engaged with the upper end of the rear side plate 30A. .

Further, the openings 31, 32, 33 are formed so that the opening width A thereof is gradually tapered downward. And in those lower openings 31A, 32A, 33A,
The front, center, and rear opening / closing plates 39, 40, and 41 serving as opening / closing bodies are provided. Axial guides 42A and 42B are provided on the left and right slightly below the openings 32A and 33A, respectively.
A and 42B are provided from the front side to the rear side, and the central part,
Guide members 42A and 42B can be moved below the rear opening and closing plates 40 and 41, respectively. Similarly, lower opening 31A
Along the right and left sides of the lower portion 31A of the opening, there are provided axial guide members 42, respectively, and the guide members 42 are provided from the front side to the rear side. Is guided therethrough so that the front opening / closing plate 39 can move. The bottom plate between the opening 32 and the opening 33
A motor 43 serving as a rotary drive device is provided on the lower surface side of 29, and a male screw body 44 is connected to a motor shaft (not shown) of the motor 43,
The distal end of the male screw body 44 is rotatably supported by a bearing 45 integral with the bottom plate 29, and a female screw body 46 screwed to the male screw body 44 is provided on the bracket 47. Are connected by a pair of left and right shaft-shaped connecting bodies 48.
In addition, a shaft-like guide body 44A is provided on both sides of the male screw body 44, and the guide body 44A penetrates the bracket 47. The screw body 46 and, consequently, the opening / closing plate 41 are moved to the front side (in this case, the direction in which the lower opening 33A is opened) or to the rear side (in this case, the lower opening 33A is closed) to open and close the lower opening 33A. can do. Further, a rod-shaped connecting body 56 is provided from the opening / closing plate 41 toward the opening / closing plate 39, and a portion of the connecting body 56 is connected to the opening / closing plate 40, and a tip 56 A of the connecting body 56 is connected to the opening / closing plate 41.
Connect to Therefore, the motor 43 operates and the open / close plate 41
By opening and closing the lower opening 33A, the opening / closing plates 39 and 40 can simultaneously open and close the lower openings 32A and 33A.

The cover 26 of the trailer body 25 is hood-like, and the front frame 49 supporting the cover 26 is provided with support portions 49A standing on the left and right front portions of the bottom plate 29, and between the support portions 49A. And a connecting rod portion 49B. In addition, a rear frame 50 having a similar shape is provided, a plurality of intermediate frames 51 are provided between the front frame 49 and the rear frame 50, and the front frame 49, the intermediate frame 51, and the rear frame 50 are provided.
Are connected by a connecting rod 51A. Front frame 49, middle frame 51,
The cover 26 supported by the rear frame 50 has a first
And a second opening / closing portion 53 that can be opened and closed from the lower end to the upper end substantially at the center of the rear surface. These first and second opening / closing portions 52 and 53 can be opened and closed by opening and closing tools 52A and 53A such as fasteners.

Next, the towing device 27 of the trailer 23 will be described. A towing device 27 provided between the mounting frame 19 and the trailer main body 25 has a front towing rod 66 as a front towing body connected via a universal joint 55 to an attachment mounting device 54 detachably provided on the mounting frame 19. ing. The attachment mounting device 54 is provided at an upper end of the mounting frame 19 and is provided with an upper locking portion as an upper locking portion as an upper connecting portion which can be locked to an upper hook 57 as an upper locking receiving portion as an upper connecting receiving portion opened upward. A lower connection that is provided at the end of a vertically oriented frame 59 and that can be locked to a lower hook 60 that is a lower locking receiving part that is provided at the lower end of a pair of left and right arms 21 and that opens upward. A lower locking shaft 61 as a lower locking portion is protruded from both ends of the horizontal frame 62 via brackets 62A, and a lower end of the vertical frame 59 is connected to a substantially center of a rear portion of the horizontal frame 62. ing. The vertical frame 59 is slidably inserted into the upper portion of the vertical main body frame 59A by fitting the base end of an inverted L-shaped vertical telescopic frame 59B, and a fixing bolt provided in the elongated hole 59D in the axial direction. An upper locking shaft 58 is provided laterally at the tip of an inverted L-shaped vertical telescopic frame 59B, which is fixed by protruding a predetermined length by a nut 59C 'and a nut 59C'. The horizontal frame 62 is provided with a pair of left and right horizontal telescopic frames 64 to be slidably inserted into both side openings of the horizontal main frame 63 to which the vertical main frame 59A is connected, and is provided at the end of the horizontal telescopic frame 64. A lower locking shaft 61 projects laterally, and a horizontal telescopic frame 64 includes fixing bolts 65 and nuts 65 provided in the axial long holes 65A.
'Fixed at a predetermined position. Further, as shown in FIG. 16, a vertical telescopic frame 59B having a U-shaped cross section, which is slightly smaller than the frame 59A, is fitted inside a vertically oriented main body frame 59A having a U-shaped cross section. Has a long hole 59D formed vertically as described above, and a bolt 59C slidable through the long hole 59D penetrates the vertically extendable frame 59B, and a nut 59D is provided at a predetermined position.
It is fixed at C '. Further, as shown in FIG.
A horizontal telescopic frame 64 slightly smaller than the frame 63 and having a cross section of a rectangular shape is fitted therein, and the horizontal main body frame 63 is formed with a horizontally long hole 65A as described above.
A bolt slidable through A penetrates the horizontally extending and retractable frame 64, and is fixed at a predetermined position with a nut 65 '.

Further, a front towing rod 66 as a front towing body is provided to project rearward from a lower portion of the vertical frame 59. A reinforcing rod 66B is connected between the front end 66A of the front pulling rod 66 and the vertical frame 59. On the other hand, a rear towing rod 67 as a rear towing body is provided at the front of the trailer body 25. Rear towbar
67 connects the base end of the forked rod 68 to the front left and right of the frame 28. A lateral reinforcing rod 69 is provided between the forked rods 68, and a reinforcing rod 70 is provided at the tip of the reinforcing rod 69 and the forked rod 68.
Is provided. The front towing rod 66 and the rear towing rod 67 are connected by the universal joint 55. The universal joint 55 is connected so as to be rotatable in both horizontal (horizontal) and vertical (vertical) directions. A slightly larger shaft 73 through 72
Is provided rotatably. On the other hand, a forked rod 68 (rear towing rod)
Protrusions 74 are provided on the left and right of the tip 68A of 67), respectively, and the protrusions 74 are rotatably connected to the peripheral surface of the shaft 73 via a shaft 75. The universal joint 55 is disposed behind the rear end 4A of the rear wheel 4 of the tractor 1. That is, the length B of the front pulling rod 66 is increased, and the universal joint 55 interposed between the distal end and the distal end 68A of the forked rod 68 (the rear pulling rod 67) is connected to the rear end 4 of the rear wheel 4.
It is arranged behind A. That is, the universal joint 55 is located behind the imaginary line C connecting the rear ends 4A of the rear wheels 4 on both sides.

Numeral 55A indicates a vertical axis of the universal joint 55, and the universal joint 55 can be rotated in a horizontal (horizontal) direction around the vertical axis 55A. 55B is a universal joint
A horizontal axis 55 is shown, and the vertical axis 55B can be rotated about the horizontal axis 55B. Furthermore, the longitudinal axis of the shaft body 73 in the universal joint 55
It is preferable that the distance D between 55A and the imaginary line C is formed to be longer than half the width E of the trailer 23 (D> １ ／ · E, D = １ ／ · E). Thus, D> 1/2 · E, D =
When set to 1/2 E, the trailer 23
You can turn to the side to make even smaller turns.

The rear tow rod 67 is provided with a foldable leg 76. The legs 76 are for holding the trailer 23 substantially horizontally together with the wheels 24 when the trailer 23 is separated from the tractor 1, and a pair of left and right brackets 76A are provided on the lower surface of the reinforcing rod 70. The upper end of a leg 78 is rotatably connected via a shaft 77, and a front stopper 79 capable of holding the leg 76 in a vertical state is fixed to one side of a bracket 76A. Further, from the lower part of the bracket 76 to the other side, a 1/4 arc-shaped folding guide path 80 is formed by a long hole around the axis 77, and a downward downward stopper 81 is formed by a hole at the lower part of the folding guide path 80, An upper stopper 82 is formed by a hole on the other side of the folding guide path 80 toward the other side. In addition, holes 83 are formed in both sides of the leg 78 in the longitudinal direction, and a guide shaft 84 slidably penetrating the holes 83 slidably penetrates the folding guide path 80.

Therefore, when the leg 76 is disposed along the reinforcing rod 70 with the axis 77 as the rotation center, the guide shaft 84 is inserted into the upper stopper 82 to fix the leg 76,
When placing 76 vertically with axis 77 as the center of rotation, legs 78
The leg 78 can be fixed by inserting the guide shaft 84 into the lower stopper 81 in a state where is locked to the front stopper 79.

The lower hook 60 is provided with a stopper 85 for stopping the lower locking shaft 61 when the lower locking shaft 61 is inserted. The lower locking shaft 61 can be attached and detached by opening and closing the opening of 60. Reference numeral 88 denotes a slightly shorter auxiliary leg provided on the trailer body 25.

Next, the operation of the above configuration will be described. First, the lower links 9 and 10 and the top link 12 of the three-point link mechanism 8 and the upper hook 57 of the mounting frame 19,
The positions of the upper locking shaft 58 and the lower locking shaft 61 are adjusted in accordance with the position of the lower hook 60. To adjust the position of the upper locking shaft 58, the vertical extension frame 59B is slid with respect to the vertical body frame 59A to a desired position, and then the nut 59C 'is fixed to the bolt 59C. Similarly, the position of the lower locking shaft 61 is adjusted by sliding a pair of left and right horizontal telescopic frames 64 with respect to the horizontal main body frame 63 to a desired position, and then fixing a nut 65 ′ to the bolt 65. Incidentally, after the upper locking shaft 58 and the lower locking shaft 61 are once locked to the upper hook 57 and the lower hook 60 without adjusting the positions of the upper locking shaft 58 and the lower locking shaft 61 in advance, Vertical telescopic frame 59
B, after sliding and adjusting the position of the horizontal telescopic frame 64, it is locked accurately, and the bolts 59C, 65, nuts 59C ',
It may be fixed to 65 '.

In order to mount the trailer 23 on the tractor 1, the upper locking shaft 58 of the attachment mounting device 54 is locked on the upper hook 57 of the mounting frame 19 integrally mounted on the tractor 1, and the lower locking Shaft 61 with lower hook
The lower locking shaft 61 is prevented from coming off by closing the opening of the lower hook 60 with the stopper 85 by operating the operation lever 86 while being locked to the operation lever 86. Thereby, the trailer body 25 can be connected to the tractor 1 by the towing device 27.

Next, the tractor 1 towed the trailer 23
The operation performance of the device will be described. In the above configuration, the mounting frame 19 is mounted on the three-point link mechanism 8 of the tractor 1, the front towing rod 66 is provided on the mounting frame 19 via the attachment mounting device 54, and the front towing rod 66 is connected to the universal joint.
A rear towing rod 67 is connected to the rear towing rod 67 via a 55, and the trailer 23 is connected to the rear towing rod 67. The universal joint 55 is disposed behind the rear end 4A of the rear wheel 4 of the tractor 1. . Therefore, when bending, it rotates about the universal joint 55 as the center of rotation, that is, the shaft 73 connecting the projecting pieces 74
Rotate with respect to 71 and move the trailer 23 in the direction X and the trailer
Since the included angle Z in the direction Y of the direction 23 can be a plane right angle or an angle smaller than the right angle (Z <90 °, Z = 90 °), the minimum radius R of the trailer 23 pulled by the tractor 1 can be reduced. . In this way, the trailer 23 is towed by the tractor 1.

Next, a case where rice hulls (not shown) discharged from the rice grinder are scattered on the field by the trailer 23 will be described. The openings 31, 32, and 33 are opened in advance. This is performed by opening the cover plates 34, 36 and 37 around the base ends 34A, 36A and 37A as the center of rotation. At this time, the tip 34 of the cover plate 34, 37
B and 37B are engaged with the front and rear side plates 30B and 30A to be in an oblique state. In addition, lower openings 31A, 32A, 33A
Are closed by the open / close plates 39, 40, 41. And cover 26
The opening / closing section 52 or opening / closing section 53 is opened by the opening / closing tools 52A and 53A, and then the tip of the rice husk discharge pipe P of the rice grinder is inserted into the first opening / closing section 52 or the second opening / closing section 53. To accommodate. After accommodating the rice husks in this manner, the tractor 1 is operated to pull the trailer 23 to the field. When the vehicle arrives at the field, a switch (not shown) around the seat 7 is operated to operate the motor 43, so that the male screw body 44 rotates and the female screw body 46 and the opening / closing plate 41 move to the other side. At this time the opening and closing plate
By moving the open / close plates 39, 40 simultaneously with the movement of 41,
The lower openings 31A, 32A and 33A are open. Therefore,
While operating the tractor 1 in the field, the trailer 23 is towed, and the rice hulls are allowed to fall naturally from the lower openings 31A, 32A, 33A to be uniformly scattered. When the amount of the rice hulls in the trailer 23 becomes small, the rice hulls are guided by the obliquely opened and closed plates 39 and 41 and can be smoothly discharged to the lower openings 31A and 33A. The opening width of the lower openings 31A, 32A, 33A by the opening / closing plates 39, 40, 41, that is, the discharge amount of chaff per unit area of the field can be appropriately adjusted by the motor 43.

Next, a description will be given of a case where the work machine 87 having the crawler (band) traveling device 87A is transported by using the trailer 23, for example. At this time, the openings 31, 32, 33 are closed by the cover plates 34, 36, 37 in advance, and the bottom plate 29 is flattened. Then, the front pulling rod 66 is lifted together with the mounting frame 19 and the attachment mounting device 54 by rotating the lifting arms 13 and 14 upward. Therefore, the shaft 73 of the universal joint 55
As a result, the tip 68A of the bifurcated rod 68 rotates upward, whereby the rear portion of the trailer 23 rotates downward about the center of the wheel 24 as the rotation center. In such a state, the rear side plate 30A is tilted outward to make contact with the ground, and thereafter, the work implement 88 is moved to the bottom plate 29 to be loaded. Thereafter, by lowering the lifting arms 13 and 14 again, the mounting frame 19 and the attachment mounting device are mounted.
The front towing rod 66 is lowered together with 54, so that the tip 68A of the bifurcated rod 68 pivots downward so that the trailer
The rear part of the wheel 23 rotates upward about the center of the wheel 24 as a center of rotation, and holds the trailer 23 substantially horizontally. Similarly, when the work machine 88 is lowered from the trailer 23, the lift arms 13 and 14 are rotated upward to incline the trailer 23.

As described above, in the above embodiment, in the tractor trailer towed to the rear of the tractor 1 via the towing device 27, the opening is formed in the bottom plate 29 of the trailer body 25.
By providing the open / close plates 39, 40 and 41 in the openings 31, 32 and 33 and providing the open / close plates 31, 32 and 33, the open portions 31, 32 and 33 are opened. Rice husks can be dropped and scattered on the field without using human power.

The openings 31, 32, 33 are provided in the width direction of the trailer main body 25, and the lower portions 31A, 32A, 32A, 32A, of the openings 31, 32, 33 formed gradually narrower downward.
33A are provided with opening / closing plates 39, 40, 41, and the opening portions 31, 3,
The cover plates 34, 36, and 37 are detachably provided on the upper portions of the base plates 2 and 33. When the openings 31, 32, and 33 are opened by the cover plates 34, 36, and 37, the open / close plates 39, 40, and 41 are used. The rice husks can be discharged from the lower openings 31A, 32A, 33A whose opening degree has been adjusted, while the bottom plate 29 becomes flat when the openings 31, 32, 33 are closed by the cover plates 34, 36, 37. It is versatile because it can carry 88 etc. In particular, the base ends 34 of the cover plates 34, 36, 37
The cover plates 34, 36, 37 can be easily opened and closed by rotatably connecting A, 36A, 37A to the bottom plate 29.

Further, a plurality of openings 31, 32, and 33 are provided in the front-rear direction of the trailer body 25, and open / close plates 39, 40, and 41 provided in the openings 31, 32, and 33, respectively.
By opening and closing in tandem, multiple openings 31,
From 32 and 33, rice husks can be evenly scattered in the field. In particular, since the openings 31, 32, and 33 are provided at the front part, the substantially central part, and the rear part of the bottom plate 29, the rice husks loaded on the trailer body 25 can be scattered almost uniformly from the bottom plate 29. In addition, the opening / closing plates 39, 40, 41 are provided on guide surfaces 42, 42 provided on the lower surface of the bottom plate 29.
A and 42B are slidably provided, and an open / close plate 41 is slid by a motor 43 provided on the lower surface of the bottom plate 29,
Since the opening / closing plates 39, 40, 41 are connected by the connecting body 48 so that they can be interlocked, the opening / closing plates 39, 40, 41 provided at three locations can be simultaneously opened / closed by the motor 43 provided at one location. , Lower parts 31A, 32A, 33 of opening parts by opening and closing plates 39, 40, 41
The opening of A can be made in the same state, and the motor 43 and the male screw body 44 for sliding the opening / closing plates 39, 40, 41 are only provided at one place, so that the size of the apparatus can be reduced.

The cover plates 34, 36, 37 have openings 31, 3,
The front cover plate 34 provided on the front opening 31 is provided rotatably on the front side plate 30B of the trailer body 25 so as to be able to be locked in an oblique state, and is provided on the rear opening 33. The rear cover plate 37 is obliquely provided on the rear side plate 30A of the trailer main body 25 so that the loaded rice hulls are guided by the front and rear cover plates 34 and 37 and the openings 31 and 3 are opened.
Since it can be discharged from 2, 33, rice husk does not remain in the corner of the trailer body 25 and can be discharged well. Moreover, since the cover plate 36 located at the center is provided on the bottom plate 29 between the opening 32 and the opening 33 when the opening 32 is opened, it is possible to reduce the opening area of the openings 32 and 33. Absent.

Further, the cover 26 is provided on the trailer body 25, and the cover 26 is provided with the open / close sections 52, 53 having the open / close tools 52A, 53A.
52 is opened, or the opening / closing section 53 is opened by the opening / closing tool 53A, and the discharge pipe P can be loaded on the trailer body 25 provided with the cover 26 through the opening / closing section 52 or the opening / closing section 53, so that human power is used. Rice husks can be loaded automatically without the need. In particular, since the first opening / closing portion 52 is provided on the upper side of the cover 26, when the discharge pipe P is inserted into the first opening / closing portion 52 to load the rice husk, the rice husk is thrown in from above. Therefore, rice husks can be piled on the trailer body 25 without clogging the discharge pipe P.

The towing device 27 includes a front towing rod 66 having an attachment mounting device 54 detachably attached to the three-point link mechanism 8 of the tractor 1, and a front towing rod 66.
66 is provided with a rear pulling rod 67 connected to the trailer body 25 via a universal joint 55, and the universal joint 55 is capable of rotating in both horizontal and vertical directions. Is disposed behind the rear end 4A of the rear wheel 4 of the tractor 1, the tractor 1 can bend when turning, with the universal joint 55 disposed behind the rear end 4A of the rear wheel 4 as a boundary. Even in a narrow place, small turning is possible. As a result, for example, after the tractor 1 advances at a substantially right angle to the road and enters the field, the tractor 1 can be operated to cause the trailer 23 to advance at an almost right angle to the road and enter the field. Further, by raising and lowering the three-point link mechanism 8 by the lifting arms 13 and 14, the front of the trailer 23 can be raised,
Since the trailer 23 can be lowered, for example, the trailer 23 can easily get over the shore.

Further, the attachment mounting device 54 includes
A horizontal frame 62 provided so as to correspond to the lower links 9 and 10 of the point link mechanism 8 and, consequently, to the lower portions on both sides of the mounting frame 19; A horizontal frame 62 is provided so as to correspond to the upper part. The horizontal frame 62 is provided with a horizontal telescopic frame 64 slidably on both sides of a horizontal main body frame 63, and the horizontal telescopic frame 64 is connected to the lower link 9, 10. The vertical frame 59 is provided so as to be slidable on the upper side of a vertical body frame 59A, and the vertical frame 59B is connected to the vertical frame 59B. Top Link 12
By being connectable to the side, that is, the upper part of the mounting frame 19, the height and width of the three-point link mechanism 8, and eventually the attachment mounting device 54 corresponding to the mounting frame 19 can be freely adjusted. (Mounting frame 1
Installation can be performed regardless of the size of 9).

A horizontal telescopic frame 64 is fitted to the horizontal main body frame 63 so as to be slidable, and both are fixed by bolts 65 and nuts 65 ', and the vertical telescopic frame 59B is fitted to the vertical main frame 59A. And slidably attached to each other, and bolts 59C and nuts 59C
', The telescopic frames 64, 59B can be reliably slid without being shaken on the main body frames 63, 59A, respectively, and also can be securely fixed.

Further, a lower locking shaft 61 which can be locked to the lower hook 60 is provided at an end of the horizontal telescopic frame 59B, and an upper locking shaft 58 which can be locked to the upper hook 57 at the upper end of the vertical telescopic frame 59B. The lower and upper locking shafts 61,
Simply connecting the 58 to the lower and upper hooks 60 and 57 enables easy connection.

The present invention is not limited to the above-described embodiment. For example, the universal joint is not limited to that of the embodiment. For example, a sphere is provided at the tip of the front towing rod, and at the tip of the rear towing rod. Various modifications are possible, such as those provided with a joint for externally fitting the sphere. In addition, as an attachment in claims 7 to 10, other than a trailer, for example, a shore coating machine for making a ridge, a work table for performing various operations, a fertilizer and a vacuum car for spraying fertilizers and the like, a plow for tillage and tillage, Rotary, shaving rotor for leveling and shaving, blade-shaped pressure leveler, grader, ridge for ridge and ridge breaking,
Various things such as a so-called mulching device, a soil disinfecting machine, a sowing machine (rotary seeder), a weeding rotor, a digging machine at the time of harvesting, a trencher, and the like are used for setting a sheet on a plow or a field.

[0044]

According to a first aspect of the present invention, there is provided a trailer connected to a rear portion of a self-propelled vehicle via a traction device, wherein an opening is provided in a bottom plate of a trailer body, and an opening / closing body is provided in the opening. It is a trailer for a self-propelled vehicle that can drop a load through an opening and automatically scatter rice husks and the like in a field.

According to a second aspect of the present invention, the self-propelled vehicle is a tractor, and the opening is provided in a width direction of the trailer main body, and the opening / closing portion is formed at a lower portion of the opening gradually narrowed downward. A body is provided, and a cover plate is detachably provided above the opening.
The trailer of the self-propelled vehicle described in the above, the load guided to the opening gradually narrowed can drop from the lower part of the opening and can be discharged in the width direction, and furthermore, a cover plate is detachably provided at the upper part of the opening By closing the opening with the cover plate, the bottom plate of the trailer can be flattened and used as a general-purpose trailer.

According to a third aspect of the present invention, the openings are provided at a plurality of positions in the front-rear direction of the trailer main body, and the opening and closing bodies respectively provided in these openings are opened and closed in conjunction with each other. It is a trailer of the self-propelled vehicle described above, and can uniformly discharge the load from a plurality of openings.

According to a fourth aspect of the present invention, the cover plate is rotatably provided in each of the openings, and the front cover plate provided in the front opening is provided so as to be obliquely engaged with the front side plate of the trailer body. 4. The trailer of a self-propelled vehicle according to claim 3, wherein the rear cover plate provided in the rear opening is provided so as to be capable of being engaged with the rear side plate of the trailer body in an oblique state. The load is guided to the opening by the front and rear cover plates in the oblique state, so that the load does not remain on the trailer and can be completely discharged.

According to a fifth aspect of the present invention, there is provided the trailer of the self-propelled vehicle according to the fourth aspect, wherein a cover is provided on the trailer body, and an opening / closing portion having an opening / closing member is provided on the cover. Since the load can be loaded by a pipe or the like that passes through the opening / closing section, it is possible to eliminate the need for human power for loading.

According to a sixth aspect of the present invention, the traction device includes a front traction body having an attachment mounting device detachably attached to the three-point link mechanism of the tractor, and the front traction body is connected to the front traction body via a universal joint. The self-propelled vehicle according to any one of claims 1 to 5, further comprising a rear towing body connected to a trailer body, wherein the universal joint is disposed behind a rear end of a rear wheel of the tractor. The center of rotation of the universal joint between the tractor and trailer is
Since it is arranged at the rear, it can make a small turn and the trailer can be turned upward or downward, so that it is possible to perform work such as relatively free running.

According to a seventh aspect of the present invention, there is provided an attachment mounting device for a self-propelled vehicle interposed between a connection receiving portion provided on the self-propelled vehicle and an attachment connected to and pulled by the connection receiving portion. An attachment mounting device for a self-propelled vehicle, wherein a connection portion of the attachment mounting device to be connected is provided on a telescopic frame, and the position of the connection portion is adjusted by expanding and contracting the frame corresponding to the connection receiving portion. Any attachment can be connected.

According to claim 8, the self-propelled vehicle comprises a tractor, the connection receiving portion comprises a three-point link mechanism,
The frame includes a horizontal frame provided between the lower links of the three-point link mechanism, and a vertical frame erected from the horizontal frame and provided with an upper portion corresponding to the top link. The frame has a horizontal telescopic frame slidably provided on both sides of the horizontal main body frame, and the horizontal telescopic frame is provided so as to be connectable to the lower link side, and the vertical frame has a vertical telescopic frame at the top of the vertical main body frame. 8. The attachment mounting device for a self-propelled vehicle according to claim 7, wherein the attachment device is slidably provided and the vertical extension frame is connected to the top link side. To adjust the position of the connecting part, It can be connected as well.

According to a ninth aspect of the present invention, the horizontal body frame is fitted to the horizontal body frame so as to be slidable, and the horizontal body frame and the horizontal body frame are provided so as to be fixed by a fixture. 9. An attachment for a self-propelled vehicle according to claim 8, wherein a vertical telescopic frame is fitted to and provided slidably, and the vertical main body frame and the vertical telescopic frame are provided so as to be fixed by a fixing tool. After attaching the horizontal and vertical telescopic frames fitted to the horizontal and vertical main body frames, respectively, and adjusting the position, the fixture is used to fix the horizontal and vertical telescopic frames to the horizontal and vertical main body frames. It can be fixed and used without rattling when sliding, and can be fixed securely.

According to a tenth aspect of the present invention, the lower end of the horizontal telescopic frame is provided with a lower locking shaft which can be locked to a lower hook provided on the end side of the lower link, and the upper end of the vertical telescopic frame is provided with the lower locking shaft. 10. The attachment mounting device for a self-propelled vehicle according to claim 9, wherein an upper hook shaft is provided which can be hooked to an upper hook provided on an end side of the top link. The shaft can be locked to the lower and upper hooks for easy connection.

[Brief description of the drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is an overall plan view showing an embodiment of the present invention.

FIG. 3 is a front view of the embodiment of the present invention in a state where a trailer is lifted.

FIG. 4 is a perspective view of the trailer with a cover attached thereto, showing the embodiment of the present invention.

FIG. 5 is a perspective view of a traction device and a trailer showing an embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a trailer showing an embodiment of the present invention.

FIG. 7 is a perspective view around a mounting frame showing an embodiment of the present invention.

FIG. 8 is a perspective view showing a three-point link mechanism and a mounting frame around the embodiment of the present invention.

FIG. 9 is a perspective view of a lower side of a trailer showing an embodiment of the present invention.

FIG. 10 is a perspective view around a universal joint showing an embodiment of the present invention.

FIG. 11 is a perspective view of the periphery of an attachment mounting device showing an embodiment of the present invention.

FIG. 12 is a front view around an attachment mounting device showing an embodiment of the present invention.

FIG. 13 is a plan view of an attachment mounting device showing an embodiment of the present invention.

FIG. 14 is a bottom view around the attachment mounting device showing the embodiment of the present invention.

FIG. 15 is a rear view around the attachment showing the embodiment of the present invention.

FIG. 16 is a cutaway perspective view taken along line II of FIG. 12;

17 is a cutaway perspective view taken along the line II-II of FIG.

[Explanation of symbols]

 1 Tractor (attachment) 4 Rear wheel 4A Rear end 8 3-point link mechanism 25 Trailer body 26 Cover 27 Traction device 29 Bottom plate 30A 30B Side plate 31 32 33 Opening 31A 32A 33A Opening bottom 34 36 37 Cover 39 39 41 Open / close Plate 52 53 Opening / closing part 52A 53A Opening / closing tool 54 Attachment mounting device 55 Universal joint 57 Upper hook (Upper connecting receiving part) 58 Upper locking shaft (Upper connecting part) 59 Vertical frame 59A Vertical body frame 59B Vertical telescopic frame 59C Bolt (fixing tool) 59C 'Nut (fixing tool) 60 Lower hook (lower connecting receiving portion) 61 Lower locking shaft (lower connecting portion) 62 Horizontal frame 63 Horizontal body frame 64 Horizontal telescopic frame 65 Bolt (fixing tool) 65' Nut (fixture) 66 Front towbar 67 Rear towbar

Claims (10)

[Claims] 1. A trailer connected to a rear portion of a self-propelled vehicle via a traction device, wherein an opening is provided in a bottom plate of a trailer body, and an opening / closing body is provided in the opening. trailer. 2. The self-propelled vehicle is a tractor, and the opening is provided in a width direction of the trailer main body, and the opening / closing body is provided below an opening of the opening which is gradually narrowed downward. The trailer according to claim 1, wherein a cover plate is detachably provided above the opening. 3. The self-sealing device according to claim 2, wherein the openings are provided at a plurality of positions in the front-rear direction of the trailer main body, and the opening and closing bodies respectively provided in the openings are opened and closed in conjunction with each other. Trailer of running vehicle. 4. The cover plate is rotatably provided in each of the openings, and the front cover plate provided in the front opening is provided so as to be obliquely engageable with the front side plate of the trailer body, and is provided with a rear opening. The trailer of a self-propelled vehicle according to claim 3, wherein the rear cover plate provided on the portion is provided so as to be able to be locked in an oblique state on the rear side plate of the trailer body. 5. The trailer for a self-propelled vehicle according to claim 4, wherein a cover is provided on the trailer main body, and an opening / closing portion having an opening / closing member is provided on the cover. 6. A front traction body having an attachment mounting device detachably attached to a three-point link mechanism of the tractor, and a front traction body connected to the trailer body via a universal joint. The trailer for a self-propelled vehicle according to any one of claims 1 to 5, further comprising a connected rear towing body, wherein the universal joint is disposed behind a rear end of a rear wheel of the tractor. 7. A self-propelled vehicle attachment mounting device interposed between a connection receiving portion provided on the self-propelled vehicle and an attachment connected and towed to the connection receiving portion, wherein the attachment connected to the connection receiving portion is provided. An attachment attachment device for a self-propelled vehicle, wherein a connection portion of the attachment device is provided on a telescopic frame. 8. The self-propelled vehicle includes a tractor, the connection receiving portion includes a three-point link mechanism, and the frame includes a transverse frame provided between lower links of the three-point link mechanism. It consists of a vertical frame which is provided upright from the horizontal frame and the upper part is provided so as to correspond to the top link, and the horizontal frame is provided with a horizontal telescopic frame slidably on both sides of the horizontal main body frame, and the horizontal telescopic frame is attached to the main frame. The vertical frame is provided so as to be connectable to the lower link side, and the vertical frame is slidably provided on the upper portion of the vertical body frame, and the vertical frame is provided so as to be connectable to the top link side. Claim 7
An attachment mounting device for a self-propelled vehicle according to the above. 9. The horizontal body frame is fitted with the horizontal expansion / contraction frame so as to be slidable, and the horizontal body frame and the horizontal expansion / contraction frame are provided so as to be fixable by a fixing tool. 9. The attachment mounting device for a self-propelled vehicle according to claim 8, wherein the telescopic frame is fitted and slidably provided, and the vertical body frame and the vertical telescopic frame are provided so as to be fixed by a fixing tool. 10. A lower locking shaft is provided at an end of the horizontal telescopic frame and can be locked to a lower hook provided at an end of the lower link, and the top link of the top link is provided at an upper end of the vertical telescopic frame. 10. The attachment attachment device for a self-propelled vehicle according to claim 9, wherein an upper locking shaft that can be locked to an upper hook provided on an end portion side is provided.