JPH09224418A - Carriage for harvesting work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily move from one ridge to the next through the use of a wheel. SOLUTION: This carriage is provided with first and second frames 4 and 9 provided with wheels 1 and 5 for traveling on a route between ridges, a third frame 11 connected with the first frame 4 and provided with side wheels for traveling on mutually adjacent routes between ridges by inserting a ridge between the side wheels, and wheel supporting members 104 and 105 for supporting the wheel 5 to the frames 4, 9 and 11 so as to freely turn a direction. Thereby the wheel 5 can be turned in the direction D of crossing ridges to easily move from one ridge to the next. In addition, the wheel supporting members 104 and 105 are provided with an interlocking mechanism 14 for turning to the direction D of crossing ridges by making each wheel 5 link with each other.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is relatively short,
The present invention relates to a trolley for harvesting work used when harvesting fruits or vegetables such as strawberries.

[0002]

2. Description of the Related Art As a bogie for harvesting work, one in which separable first and second frames are connected is disclosed (Japanese Utility Model Publication No. 6-46421). In this trolley for harvesting work, the worker arrives at the seat of a three-wheeled trolley that travels across the ridge, and the control box controls the rotation speed of the wheel drive motor to make the traveling speed suitable for picking strawberries. The ridge is advanced from one end side to the other end side while adjusting the speed. Then, while moving forward, the worker picks up the strawberries from the side surfaces of the ridges on both sides to the upper surface, and stores them in the harvest box placed on the temporary stand of the frame. When the harvest box is full, move it to a separate storage stand. Once the strawberry has been picked up to the other end of the ridge, stop running, lower the harvest box, loosen the bolts of the frame connecting fasteners, and disconnect the second frame from the first frame. Then, the separated frames are carried to an adjacent furrow road, assembled again in a running state, and the next ridge picking operation is performed. By using such a trolley for harvesting work,
The labor of the harvesting work was reduced, and the ridges could be easily moved by one person, and the labor saving of the harvesting work was achieved.

[0003]

In the trolley for harvesting work, however, there remains a problem that it takes time and effort to separate and connect the frames each time the ridges are moved. For this problem, if the work passage provided at the ridge start end is not excessively narrow, it is possible to utilize all of the wheels of the frame or separate one side of the machine body without separating the frame. It is possible to run in the ridge crossing direction with only the wheels grounded. However, it is difficult for one person to perform the work of changing the traveling direction of the machine body, and the work load increases.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention runs on a main frame having wheels for traveling on a furrow and on an adjacent furrow connected to the main frame with a furrow interposed therebetween. A sub-frame having wheels for supporting the wheels, and a wheel support member for supporting the wheels on the frame so that the wheels can change directions. With this configuration, the wheels can be easily moved by using the wheels by converting the wheels in the transverse direction of the ridges. The wheel support member is preferably provided with an interlocking mechanism for linking the wheels and converting the wheels in the ridge crossing direction. With this configuration, it is possible to easily change the direction when moving the ridges. Further, it is preferable that the wheel support member includes a locking means for positioning the wheel in the ridge road traveling direction or the ridge crossing direction. With this configuration, the wheels can be reliably oriented in the direction of the furrow or in the transverse direction of the furrow. Further, it is preferable that the frame is provided with a bending mechanism for appropriately folding these frames. With this configuration, the entire machine body can be substantially reduced, and the ridges can be easily moved even in a narrow work passage. The refraction mechanism may refract the main frame. Further, it is preferable that the main frame includes a traveling drive device for driving the wheels thereof, and a clutch mechanism that appropriately turns on / off the rotation transmission of the traveling drive device. With this configuration, it is possible to prevent the braking force from the traveling drive device from acting on the wheels by disengaging the clutch during the ridge movement using the wheels.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 3 show a case where the cart for harvesting work according to the present invention is applied to a harvesting work of strawberries. This trolley for harvesting work A is connected to a main frame A ₁ having a drive wheel 1 and a front wheel 5 which are wheels for traveling along a furrow road B ₁ , and is connected to the main frame A ₁ and is adjacent to a ridge C. Side wheels 10 that are wheels for traveling on the furrow B ₂
And a sub-frame A ₂ having The main frame A ₁ extends from the first frame 4 provided with a traveling drive device 13 for driving the drive wheels 1 and forward of the traveling direction (ridge direction) F during the harvesting work from the first frames 4 to drive wheels. The second frame 9 has a front wheel 5 smaller than 1. The sub-frame A ₂ is composed of a third frame 11 extending from the first frame 4 in the ridge crossing direction D and provided with a side wheel 10 having substantially the same size as the front wheel 5. That is, each frame 4, 9, 11 is assembled into a substantially L-shape in a plan view, and each wheel 1, 5, 10 is arranged at the apex of a substantially right triangle to form a traveling carriage. The wheels 1, 5, 10 are provided with wheel support members 103, 104, 105 for supporting the respective frames 4, 9, 11 so as to be able to change direction, and further link the wheels 1, 5, 10 together. An interlocking mechanism 14 is provided for changing the traveling direction to the ridge crossing direction D.
Further, the main frame A ₁ is provided with a bending mechanism 106 for folding the second frame 9 to the first frame 4 side.

The first frame 4 has a wheel support 12 for supporting the drive wheel 1 and a wheel support 12
It is mainly configured by a bearing shaft 15 standing upright and a storage table 3 for placing the strawberry harvest box 2 above the bearing shaft 15. The wheel support 12 is a plate member having a U-shaped cross-section with an opening at the bottom, and supports the axle 70 of the drive wheel 1 in a double-supported manner at the lower end. Bearing shaft 1
5 is fixed to the horizontal upper surface 12c of the wheel support 12 at a position directly above the axle 70, and a bearing body 19 is fitted to the lower portion thereof. The bearing body 19 is, as shown in FIG.
It is composed of a sleeve 107 having a bush 18 built-in and a bearing 17 provided at the lower end thereof, and with the bush 18 fitted on the bearing shaft 15, the sleeve 107 rotates around the bearing shaft 15 about its axis. It is free to move. FIG.
As also shown in the drawing, the first horizontal rod 20 extending forward in the traveling direction F is attached to the sleeve 107, and the first rising rod 21 is attached to the tip thereof. The storage stand 3 is supported by the first rising rod 21. Storage 3
Is two U-shaped frames 3 corresponding to the size of the harvest box 2.
It is composed of a and 3b, and is assembled in an inverted L shape in a plan view. That is, one frame body 3a extends so that its arcuate portion faces forward in the traveling direction F at the center of the machine body, and the other frame body 3a.
In b, the arc portion extends in the ridge crossing direction D, and one of the straight portions of the frame 3b is connected to the upper end of the first rising rod 21. Therefore, the wheel support 12, the bearing shaft 15, and the bearing body 19 are configured as a wheel support member 103 that supports the drive wheel 1 so as to be rotatable in the horizontal direction. In addition, a battery holder 23 extending in the horizontal direction is attached in the middle of the first rising rod 21, and a battery base 22 for mounting a battery 24 is supported. That is, the battery 24 serving as a power source of the traveling drive device 13 is arranged below the storage table 3 and directly above the support shaft 15.

The wheel support member 103 is provided with locking means 108 for positioning the traveling direction of the drive wheel 1. As shown in FIG. 5, the locking means 108 includes a locking plate 28 horizontally mounted on the upper surface 12c of the wheel support 12, and an engagement body 29 supported by the sleeve 107 via a mounting member 31. It is composed of. Locking plate 28
Has one side formed in an arc shape, and two locking holes 28a, 28b separated by a central angle of 90 degrees are formed at a position on an arc locus around the bearing shaft 15. The engagement body 29 is mainly configured by a cylinder body 30 having an upper end attached to the attachment member 31, and a locking pin 27 provided coaxially in the cylinder body 30. The mounting member 31 is a lever-shaped plate, extends in the radial direction of the support shaft 15, and supports the tubular body 30 so that the lower end thereof is in sliding contact with the upper surface of the locking plate 28. The locking pin 27 has an axial length slightly longer than the cylindrical body 30 and an outer diameter substantially equal to the inner diameters of the locking holes 28a and 28b. An upper end of the locking pin 27 projects from a hole formed in the mounting member 31, and a grip 35 for operation is attached.
A retaining member 32 having an outer diameter larger than that of the locking holes 28a and 28b is attached to the lower portion of the locking pin 27.
The lower end of is not projected from the locking plate 28.
A washer 33 having an outer diameter larger than the outer diameter of a compression spring 34 described later is superposed on the upper surface of the retaining member 32. A compression spring 34 is provided between the washer 33 and the lower surface of the mounting member 31, and urges the locking pin 27 downward, that is, in the direction in which its lower end is inserted into the locking holes 28a and 28b. .
The locking holes 28a and 28b are arranged so as to be related to the direction of the drive wheel 1, and when facing the traveling direction F, the locking pin 27 is supported in the locking hole 28a on the left side in FIG. Rotate 90 degrees clockwise about the axis 15 and the ridge crossing direction D
When it is turned to the right side, it is inserted into the right locking hole 28b, respectively.

Next, the second frame 9 comprises a second horizontal rod 38 for supporting the front wheel 5 via a mounting bracket 49, and the harvest box 2
The table support member 64 for supporting the temporary placing table 8 and the step receiver 57 for supporting the step 7 are provided. The mounting bracket 49 is a plate having an L-shaped cross section, and the axle 109 of the front wheel 5 is pivotally supported at its lower end.
A supporting shaft 52 is erected on the upper surface of the mounting member 49, and is inserted into a cylindrical body 47 mounted on the second horizontal rod 38 in a direction perpendicular to the supporting shaft 52 and is rotatably held. Support shaft 5
A retaining member 53 that engages with the upper end of the cylindrical body 47 is attached to the upper portion of 2. That is, the support shaft 52 and the cylindrical body 4
7, the mounting bracket 49 and the retaining member 53 are configured as a wheel support member 104 for the front wheel 5. The seat 6 is provided on the rear end side of the second horizontal rod 38. A support shaft 44 having an appropriate length is hung on the lower surface of the seat 6 and is rotatably inserted in a cylindrical body 42 attached to the second horizontal rod 38. Support shaft 4
A stopper collar 43 is inserted into 4 and a pin 45 is inserted into an insertion hole formed in the stopper collar 43 and a plurality of insertion holes 44a formed at a predetermined interval in the longitudinal direction of the support shaft 44, so that the seat is seated. 6 can be held at an appropriate height. The rear end of the second horizontal rod 38 is connected to the lower end of the oblique rod 36 extending forward and downward from the lower surface of the front end of the first horizontal rod 20 of the first frame 4, and the bending mechanism 106 is provided at this connecting portion. ing.

As shown in FIGS. 4 and 6, the refraction mechanism 106 includes a connecting pin 40 provided in a direction traversing the second horizontal rod 38, and a pair of connecting plates attached to both ends of the connecting pin 40. 37a, 37b, and is provided with a locking means 110 for appropriately fixing the connected state. Connecting pin 4
Reference numeral 0 denotes a refraction axis, which is rotatably accommodated in a tubular body 39 attached to the upper surface of the rear end of the second horizontal rod 38 with both ends projecting. Connecting plates 37a, 37
b is attached to both sides of the lower end of the slant rod 36, and the outer connecting plate 37a is linear in the direction of the slant rod 36 and the inner connecting plate 3a.
7b is bent and extends along the direction of the second horizontal rod 38. The locking means 110 is the second horizontal rod 38.
The locking plate 41 attached to the lower surface of the rear end and the locking plate 41
And a locking pin 111 that is fitted into the locking holes 41a and 41b formed in the. The locking plate 41 is bent and extended along the lower surface of the slant rod 36, and has an arc shape with the connecting pin 40 as the center. Further, the upper edge of the locking plate 41 serves as a stopper that comes into contact with the slant rod 36 and prevents the second horizontal rod 38 from coming down too much when the second horizontal rod 38 pivots downward about the connecting pin 40. And the locking holes 41a, 41
b is drilled on the arc locus centered on the connecting pin 40 with a center angle of 90 degrees. The locking pin 111, like the locking pin 27 of the first frame 4, includes a retainer 112, a washer 113, a compression spring 114, and a grip 115, and is housed in a cylindrical body 116 attached to the outer connecting plate 37a. Has been done.
Then, in the working posture in which the second horizontal rod 38 is horizontal, the locking pin 111 is inserted into the front locking hole 41a to maintain that posture, and the second horizontal rod 38 is moved around the connecting pin 40. In the state of being folded upward, the locking pin 111 is inserted and locked in the rear locking hole 41b.

Further, as shown in FIGS. 1 and 2, the temporary placing table 8 has a U-shaped frame body 66 in plan view, and a frame body 66.
And a support metal fitting 65 having an L-shaped cross-section that is hung between the base ends of the support metal fitting, and a support rod 67 extending downward at a right angle thereto is attached to the lower surface of the support metal fitting 65. Table support member 6
4 is a cylindrical body 63 through which the support rod 67 is inserted, and a cylindrical body 6
3 and a second slant rod 62 connecting the second horizontal rod 38, and the temporary stand 8 is held at an appropriate distance diagonally above the seat 6. A cylindrical body 61 is attached to the proximal end of the slanted rod 62, and has an insertion hole formed in the cylindrical body 61 and a plurality of insertion holes 38a formed at predetermined intervals in the longitudinal direction of the second horizontal rod 38. By inserting a pin (not shown), the mounting position in the front-rear direction can be adjusted. The step 7 is assembled into a T-shape by the vertical rod 59 and the horizontal rod 60. The step receiver 57 includes a tubular member 54 extending forward from the front end of the second horizontal rod 38 in the traveling direction F, and an oblique rod 55 extending obliquely downward from the front end of the tubular member 54.
And a cylindrical body 56 attached to the tip of the slanted rod 55 in the traveling direction F, and a vertical rod 59 is inserted into the cylindrical body 56 so as to be able to move forward and backward and fixed at an arbitrary position. The base end of the tubular member 54 is attached via a bracket 48 and a horizontal pin 58 so as to be vertically rotatable. The mounting structure of the step receiver 57 may be fixed or detachable.

Next, the third frame 11 is the first frame 4
Mainly by a third horizontal rod 68 extending in the ridge crossing direction D, a vertical rod 71 hanging from the extending end of the third horizontal rod 68, and a rising tubular body 72 having a vertical shaft 69 inside. It is configured. As shown in FIG. 7, the third horizontal rod 68 includes a bracket 74 on the lower surface of the frame body 3a on the center side of the machine body.
To the pressing member 93 having a U-shaped cross section, which is attached via
One end side is inserted so as to be movable back and forth in the longitudinal direction. Then, a bolt 117 for fastening the pressing member 93 and the bracket 74.
It is fixed by detaching or screwing it in, and its extension length can be adjusted. The upper end of the rising tubular body 72 is overlapped with the lower part of the vertical rod 71 and is connected by a connecting plate 73, and the lower end thereof is an upper surface of a mounting bracket 119 having an L-shaped cross section that pivotally supports the axle 118 of the side wheel 10. Is abutted against. The vertical shaft 69 is housed in the rising cylinder 72 so as to be rotatable around its axis, and the lower end thereof is fixed to the mounting bracket 119. The upper end of the vertical shaft 69 protrudes from the rising tubular body 72, and the tubular body 75 is inserted and fixed to each other by a fixing pin 94. The cylinder 75 is the rising cylinder 72.
It is formed with a smaller outer diameter and is slidably abutted on the upper end of the rising cylinder 72. That is, the rising tubular body 72, the vertical shaft 69, the mounting bracket 119, and the tubular body 75.
Thus, the wheel support member 105 that supports the side wheel 10 so as to be rotatable in the horizontal direction is configured.

Next, the interlocking mechanism 14 is composed of a connecting rod 120 for connecting the driving wheel 1 and the side wheel 10 and a connecting wire 50 for connecting the side wheel 10 and the front wheel 5. The connecting rod 120 extends parallel to the rear side of the third horizontal rod 68 in the traveling direction F, and the drive wheel 1
It is formed by a cylindrical rod 76 on the side and a solid rod 77 on the side of the side wheel 10 that is housed in the rod 76 so as to be able to move back and forth. The insertion length of the solid rod 77 is determined by the fixing operation of the screw 121 provided on the cylindrical rod 76, so that the total length of the rod can be adjusted. In this embodiment, the total rod length is set to be substantially equal to the distance between the support shaft 15 and the vertical shaft 69. The base end of the cylindrical rod 76 is attached to the arm body 25 provided on the support shaft 15,
The tip of the solid rod 77 is pivotally supported by an arm plate 78 provided on the vertical shaft 69 via rod ends 79, respectively. The rod end 79 connects these to each other in a vertically and horizontally rotatable manner.

The arm body 25 is composed of an L-shaped rod 25a bent at right angles in a plan view, and a vertical rod 25b erected from the tip of the L-shaped rod 25a. The L-shaped rod 25a has a base end attached to a tubular body 122 fitted to the upper portion of the bearing shaft 15, extends from the tubular body 122 toward the side wheel 10, and is bent rearward in the traveling direction F. As shown in FIG. 5, the cylindrical body 122 has an outer diameter substantially equal to that of the bearing body 19 and is provided in contact with the upper end thereof, and is fixed to the bearing shaft 15 by a radial fixing pin 26. . A horizontal small arm 123 is attached to the upper end of the vertical rod 25b, and a rod end 79 is provided at the tip of the small arm 123. The shape of the arm body 25 as described above is for avoiding the battery 24 provided above the support shaft 15.
If is not provided in this position, for example, the radial arm may be directly attached to the cylindrical body 122. On the other hand,
The arm plate 78 is a substantially rectangular plate, and the base end thereof has a vertical shaft 69.
It is attached to the cylindrical body 75 and extends horizontally. The length of the arm plate 78 is a length corresponding to the distance from the support shaft 15 to the tip of the arm body 25 (small arm 123), and the connecting rod 120 is kept parallel to the third horizontal rod 68. The drive wheel 1 and the side wheels 10 are linked together.

Further, the connecting wire 50 has elasticity capable of transmitting a tensile force and a pressing force, and at the side wheel 10 side, a connecting rod.
120 and the third horizontal rod 68 extend in parallel with each other, and in the vicinity of the bearing shaft 15, the second horizontal rod 3 is appropriately bent along the oblique rod 36.
It has been extended along 8. Guide brackets 124 and 125 are provided on the third horizontal rod 68 and the second horizontal rod 38, and hold the midpoint of the connecting wire 50. An end portion of the connecting wire 50 on the side wheel 10 side is attached to an intermediate position of the arm plate 78 via a rod end 79. The end portion of the connecting wire 50 on the front wheel 5 side is attached to the small arm 51 attached to the upper end of the attachment fitting 49 and extending in the radial direction of the support shaft 52 via the rod end 79. That is, the rotation of the side wheel 10 around the vertical axis 69 is transmitted to the support shaft 52 of the front wheel 5 so that the traveling directions of these are aligned.

Next, as shown in FIG. 4, the traveling drive device 13 is provided with a motor 80 which is provided behind and below the traveling direction F of the battery 24 and uses the motor 80 as a power source, and a transmission unit for changing the rotation of the motor 80. Part 81, worm reducer 87, and three gears 90, 9 having different sizes for transmitting the rotation output from worm reducer 87 to drive wheel 1.
1, 92 mainly. A clutch mechanism 126 that controls the transmission of rotational drive by maintaining or releasing the meshed state of the gears 90 ... 92 is provided. The motor 80 is arranged such that its output shaft is directed rearward in the traveling direction F, and a connecting fitting 85 having a horizontal U-shaped cross section is integrally attached to the output side of the main body. The transmission unit 81 includes a transmission box 8 having a vertically long rectangular parallelepiped shape.
4 and a worm reducer 87 connected to the lower part thereof. The flange on the opening side of the connecting fitting 85 is the transmission box 8.
It is bolted to the input side end face of the upper part of 4. An operation lever 86 is provided on the upper surface of the speed change box 84, and two sets of gear trains provided in the box are selected by a meshing clutch (not shown) so that two speeds can be changed. There is. An output side end face that is the same as the input side end face is formed in the lower portion of the transmission box 84, and the worm speed reducer 87 is attached to the output side end face by a pair of L-shaped coupling fittings 88a and 88b. Output shaft 9 of worm reducer 87
7 is projected in the ridge crossing direction D. A small gear 90 is attached to the output shaft 97, and a large gear 9 is axially supported by a rear bracket portion 12b formed on the wheel support 12.
1 is engaged. This large gear 91 is a middle gear 92 coaxially attached to a wheel disc 95 of the drive wheel 1.
Is engaged. Therefore, the rotation of the motor 80 depends on the transmission box 8
4, the worm speed reducer 87 and the gears 90 ... 92 are used to reduce the speed to a low speed, and the drive wheel 1 is rotated so as to have a traveling speed suitable for picking strawberries.

On both sides of the front part of the worm reducer 87,
A pair of connection support fittings 89a and 89b are attached with bolts 127. These connection support fittings 89a, 89b
Respectively extend forward of the traveling direction F, and are refracted so that their intervals match the width of the wheel support 12. An upper bracket portion 12a protruding upward is formed on the rear portion of the upper end of the wheel support 12, and the ridge crossing direction D
The support pins 16 extending in the direction of the arrow are attached with both ends protruding. The connection support fittings 89 a and 89 b are rotatably supported by the support pin 16. Then, as shown in FIG.
From the position of, the wheel support 12 is extended obliquely downward to the vicinity of the center of the side surface of the wheel support 12. An engagement member 98 is provided at the position of this extension end. The engaging member 98 is a plate lever having an L-shaped cross section and extends substantially horizontally rearward in the traveling direction F. The front end of the engaging member 98 is supported by a shaft 128 extending in the ridge crossing direction D protruding from the side surface of the wheel support 12, and is pivotally supported in a state where the upper side 98a projects like a collar. An engaging groove 99 is formed in a U-shape that opens upward on the surface of the engaging member 98, and its front end 99a or rear end 99b is formed.
Further, the locking pin 96 attached to the extended end of the connection support fitting 89b is locked. Engaging member 98
A tension spring 101 supported by the axle 70 of the drive wheel 1 via a mounting bracket 100 is attached to the rear end of the.
Therefore, in a normal traveling drive state, the traveling drive device 1
3 is supported by the support pin 16 and the locking pin 96 on the rear portion of the wheel support 12 via the connection support fittings 89a and 89b. When the motor 80 and the transmission unit 81 are lifted up around the support pin 16 as shown by the chain double-dashed line in FIG. 4, the small gear 90
And the large gear 91 are disengaged and the locking pin 9
6 is locked to the rear end 99b of the locking groove 99, and this state is maintained. That is, the traveling drive device 1
A support structure rotatable around the support pin 16 in FIG.
A clutch mechanism 126 is constituted by the engaging member 98 and the locking means 83 constituted by the coupling support fitting 89b.

In addition, a seat 6 is mounted on the frame 3a on the center side of the machine body.
A control box 102 is suspended at a position near the upper part of the vehicle, and an operator seated on the seat 6 operates a lever 129 of the control box 102 to perform an on / off switch of the motor 80, rotation control, and the like so that traveling control can be performed. It has become.

When carrying out the strawberry harvesting work with the trolley A for harvesting work constructed as described above, the second frame 9 is placed in a work posture in which it is extended forward in the traveling direction F, and the drive wheels 1 and the front wheels 5 are worked. Target ridge C ridge B
₁ every, placed in furrow path B ₂ adjacent the side wheel 10. Then, the operator selects a shift speed with the operation lever 86 of the transmission box 84, sits down on the seat 6, controls the rotation speed of the motor 80 by operating the lever of the control box 102, and turns on the switch to drive the drive wheel 1. Rotate at a predetermined rotation speed. By this rotation drive, harvesting cart A
As shown in FIG. 9, the ridge C has a starting end portion 130 to an end portion 13
The worker runs toward 1 at an optimum speed, and the worker picks up strawberries from the side surface to the upper surface of the left and right ridges C ₀ and C ₁ in order. The ridges C are arranged in a house partitioned by a wall surface 132 made of vinyl or the like into a rectangular shape in a plan view. The house outlet 133 side is the starting end portion 130, and the terminal end portion 131 is abutted against the wall surface 132 facing the outlet 133. Has been. The starting end portion 130 and the outlet side wall surface 132
A work passage 134 that can pass in the ridge crossing direction D is provided between and.

When the strawberry has been picked after traveling to the terminal end 131 of the ridges C ₀ and C ₁ , the motor 8 is loaded with the harvest box 2 stacked.
Reverse 0 and move backward to the beginning 130 (exit 133),
Return to work path 134 and unload. Then, the grip 35 of the locking pin 27 on the upper surface of the wheel support 12 is pulled up to release the locked state during the work. Next, as shown by the chain double-dashed line in FIG.
Rotate clockwise about 5 to a position perpendicular to the traveling direction F. By this rotational movement, the drive wheel 1 rotates about the support shaft 15 via the wheel support 12 to change its direction. At this time, the arm body 25 connected to the support shaft 15 also rotates in the same horizontal direction,
The arm plate 78 is swung via the connecting rod 120. By this swinging, the side wheels 10 rotate around the vertical shaft 69 to change the direction, and the connecting wire 50 connected to the arm plate 78 is pushed, and the front wheels 5 also move in the same direction. That is, all wheels 1, 5, 10 are in the ridge crossing direction D all at once.
Aligned to. At this time, the locking pin 27 is positioned on the opposite side of the arcuate portion of the moved locking plate 28, and is inserted into the engagement hole 28b at this position by the urging force of the compression spring 34, so that the driving wheel 1 moves in the horizontal direction. The rotation of is locked. This locking pin 2
By locking with 7, the other wheels 5, 10 are indirectly
That is, it is fixed in the ridge crossing direction D via the interlocking mechanism 14.

Next, the transmission unit 81 is lifted up slightly, and the upper side 98a of the engaging member 98 is pinched and pulled up to disengage the locking pin 96 from the front end 99a of the locking groove 99. Then, further raise the transmission unit 81,
As shown by the chain double-dashed line in FIG. 4, the support pin 16 is rotated to engage the small gear 90 fixed to the worm speed reducer 87 with the large gear 91 pivotally supported by the wheel support 12. To release. In this process, the locking pin 96 relatively moves along the locking groove 99 from its front end 99a to its rear end 99b, and the engaging member 98 swings downward by the urging force of the tension spring 101, whereby The locking pin 96 is fitted into the end 99b, and this gear separated state is maintained. That is, the drive wheel 1 is separated from the worm speed reducer 87 and is put in a state of idling. In this state, as shown by the broken line arrow in FIG. 9, by pushing the machine body of the harvesting work carriage A in the ridge crossing direction D, the wheels 1, 5, 10 are moved along the work passageway 134 while rolling. Let When the position of the adjacent ridge C ₂ is reached, the transmission unit 81 is lowered in the reverse order to be connected to the drive wheel 1, and the wheels 1, 5, 1
0 to the direction of travel F and fix it, from the start end 130 to the end
Proceed to 131 for the next picking operation.

As described above, the wheel supporting members 103 ... 105 are provided on each of the frames 4, 9 and 11 so that the driving wheels 1, the front wheels 5 and the side wheels 10 are oriented in the ridge crossing direction orthogonal to the longitudinal direction of the ridges C. Wheels 1, 5, and 10 are now available because they can be converted to D
With the grounded state, it is possible to easily move it to the adjacent ridge C by using the working passage 134. That is, it is possible to move the machine in the right-angled direction as it is without any troublesome work such as changing the direction of the entire machine body, and it is possible to reduce labor and labor in the harvesting work and the ridge movement. In this embodiment, since the speed change unit 81 is connected to the wheel support 12, the direction of the drive wheel 1 can be easily changed by turning the speed change unit 81. Since the wheel support members 103 ... 105 are provided with the interlocking mechanism 14, the directions of the other wheels 5 and 10 can be simultaneously changed only by changing the direction of the driving wheel 1, and the direction can be changed swiftly and reliably. You can Since the locking means 108 is provided on the wheel support member 103 of the drive wheel 1,
The wheels 1, 5, 10 can be reliably held in the direction for picking work or the movement of the ridges, and there is no fear of meandering during traveling on the furrow ridge B, and traveling stability of the machine body can be secured. Further, the traveling drive device 13 has a clutch mechanism.
Since 126 is provided, the braking force does not act on the drive wheels 1 during the ridge movement, and the wheels 1, 5, 10 can be rolled easily. Since the clutch mechanism 126 is provided with the locking means 83, the gears 90 and 91 can be disengaged from each other and maintained by simply lifting the transmission unit 81, and the rotation transmission can be reliably connected and disconnected. You can

Further, as shown in FIG. 10, a narrow work passage 13 is provided.
If it is difficult to move laterally with all wheels 1, 5 and 10 grounded because of the number 5, the second frame 9
Is folded to the side of the first frame 4 to substantially reduce its width. That is, the locking pin 111 of the locking means 110 provided on the bending mechanism 106 of the second frame 9 is pulled to release the locked state during the work, and the seat 6 is removed. Then, as shown in FIG. 8, the second frame 9 is bent and expanded upward together with the front wheel 5 around the connecting pin 40. In this process, the locking pin 111 relatively moves along the locking plate 41,
The second horizontal rod 38 is fixed in a raised state by being inserted into the rear locking hole 41b by the urging force of the compression spring 114. Then, as in the case of FIG. 9, the clutch mechanism 126
The connection between the drive wheel 1 and the traveling drive device 13 is disconnected by the two wheels, the drive wheel 1 and the side wheel 10 aligned in the ridge crossing direction D, and moved to the adjacent ridge C ₂ along the working path 135. . Once it has been moved to the specified position, the refraction mechanism
The locking pin 111 of 106 is pulled to release the locked state, the second frame 9 is lowered and fixed in the working state, and the next picking work is started.

Since the second frame 9 is folded upward so that the front wheel 5 is positioned above, the refraction mechanism 106 is provided, so that the width of the machine body with the driving wheel 1 and the side wheels 10 grounded. Becomes substantially smaller and easier to handle,
There is no need to tilt the machine, and even one person can easily run in the ridge crossing direction D.
Can be moved to That is, it is possible to move the ridge more easily than a conventional harvesting trolley that separates and connects the frames. And a wide working passage 13
In the case of 4 and the narrow working passage 135, the ridges can be easily moved, which is extremely versatile. Further, since the locking means 83 is provided, the rotation transmission state or the idling state can be surely maintained.

In this embodiment, the wheel support members 103, 104, 10 are provided on all the three wheels (1, 5, 10).
Although 5 is provided, the front wheels 5 may be fixed in the traveling direction when the ridge movement is performed only by folding. In this case, the connecting wire 50 of the interlocking mechanism 14 may be omitted. If constituted in this way, it will become a simple structure and can be used as an inexpensive device. In addition, when the second frame 9 is folded, if the driving wheels 1 and the side wheels 10 are unstable only by being grounded, a stand may be provided below the first frame 4 so that the second frame 9 can stand by itself. And the interlocking mechanism 14
The connecting rod 120 and the connecting wire 50 are shown as
You may comprise only a rod or only a wire.

In the above-mentioned embodiments, strawberries are shown as the harvested product, but the present invention is not limited to this, and can be widely applied to the harvesting work of vegetables or the like grown by using similar fruits or ridges. is there.

[0027]

In summary, according to the present invention, the ridges can be easily moved by using the wheels, and the excellent effects that the labor saving and labor saving can be achieved are achieved. Further, by providing the interlocking mechanism, it is possible to easily change the direction when moving the ridges. Further, by providing the locking means, it is possible to reliably hold the direction of the wheel during traveling and movement of the ridge. Further, by providing the bending mechanism, the entire body can be substantially reduced, and the ridges can be easily moved even in a narrow work passage. Further, by providing the clutch mechanism, the ridge movement can be performed easily without the braking force of the traveling drive device acting on the wheels during the ridge movement.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a bogie for harvesting work according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a view taken along the line XX in FIG.

5 is an enlarged cross-sectional view of a main part of FIG.

FIG. 6 is an enlarged cross-sectional view of a main part of FIG.

FIG. 7 is a side view showing another main part of FIG.

FIG. 8 is a side view showing a state in which the frame of FIG. 2 is folded.

9 is a plan view showing the movement of ridges of the harvesting work cart of FIG. 1. FIG.

10 is a plan view showing another ridge movement of the harvesting work cart of FIG. 1. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Drive wheel (wheel) 4 1st frame (main frame) 5 Front wheel (wheel) 9 2nd frame (main frame) 10 Side wheel (wheel) 11 3rd frame (subframe) 13 Travel drive device 14 Interlocking mechanism 103, 104, 105 Wheel support member 106 Refraction mechanism 108 Locking means 126 Clutch mechanism A Harvesting work trolley A ₁ Main frame A ₂ Sub frame B Ridge path C Ridge D Ridge crossing direction F Travel direction (Ridge path direction)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Kanemitsu, 1-40, Nisshin-cho, Omiya-shi, Saitama Prefecture 2 Biological Specific Industrial Technology Research Promotion Organization (72) Inventor Tomohiko Ota 1-chome, Nisshin-cho, Omiya-shi, Saitama Address 2 Biotechnology-Specific Industrial Technology Research Promotion Organization (72) Inventor Konosuke Tsuga 1-40-40 Nisshin-cho, Omiya City, Saitama Prefecture 2 Biotechnology-specific Industrial Technology Research Promotion Organization (72) Inventor Sadao Omori Omiya City, Saitama Prefecture 1-40, Nisshin-cho 2 Biotechnology Research Institute (72) Inventor Mitsumitsu Sato 90-1 Fukumasu, Yoshii-cho, Ukiwa-gun, Fukuoka (72) Inventor, Masayuki Teshima Masayuki Teshima Fukuoka 90-1 Fukumasu, Yoshii-cho, Ukiha-gun In-house Chikusui Canicom Co., Ltd. (72) Inventor Yama ▲ Zaki ▼ Hisako Fukui, Yoshii-cho, Ukiha-gun Fukuoka Profit 90-1 Within Tsukusui Canicom Co., Ltd. (72) Inventor Tsutomu Maeda Osamu Yoshii-cho, Ukiha-gun, Fukuoka 90-1 Fukusuma Co., Ltd. (72) Inventor Hasegawa Koten 1061 Kaminagato, Chitose-shi, Hokkaido 2 Stars Agricultural machinery Co., Ltd. (72) Inventor Masatoshi Yamada 1061 Kaminagato, Chitose-shi, Hokkaido 2 Star Agricultural machinery Co., Ltd.

Claims (6)

[Claims] 1. A main frame having wheels for traveling on a furrow road, and a sub-frame having wheels connected to the main frame for running on an adjacent furrow road with a furrow sandwiched therebetween.
A bogie for harvesting work, comprising a wheel supporting member for supporting the wheel on a frame so as to be capable of changing direction. 2. The trolley for harvesting work according to claim 1, wherein the wheel support member includes an interlocking mechanism for linking the wheels and converting the wheels in the ridge crossing direction. 3. The bogie for harvesting work according to claim 1 or 2, wherein the wheel support member includes a locking means for positioning the wheel in the ridge path direction or the ridge crossing direction. 4. The bogie for harvesting work according to claim 1, wherein the frame is provided with a bending mechanism for appropriately folding the frames. 5. The bogie for harvesting work according to claim 4, wherein the refraction mechanism refracts the main frame. 6. The main frame according to claim 1, further comprising a traveling drive device for driving the wheels of the main frame, and a clutch mechanism for connecting and disconnecting rotation transmission of the traveling drive device. Cart for harvesting work.