JP2988600B2 - Vertical transfer device for seedlings on seedling table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for vertically transporting seedlings in a seedling table mounted on a rice transplanter.

[0002]

2. Description of the Related Art Conventionally, a seedling table mounted on a rice transplanter is shown in FIG.
As shown in Fig. 1, the seedling feeding belt (20
1) Below the seedling feed belt (201), follow the
(202) is provided, and the driven cam (202) is driven by a vertical feed drive cam (203) rotating intermittently upward to operate a seedling feed belt (201). .

[0003]

However, in the above conventional example, since the gap between the driven cam (202) and the projection (204) of the seedling feed belt (201) is small, the driven cam (202) is vertically moved. If it moves in the direction, the protrusion of the seedling feed belt (201)
(204) could not rotate due to contact.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a seedling feeding mechanism is provided on a seedling mounting table, and the seedling mat is vertically fed by intermittently operating the seedling feeding mechanism. The mechanism comprises a seedling feed belt and a vertical feed driven cam for intermittently vertically transferring the seedling feed belt in interlocking connection with the same seedling feed belt, and furthermore, a vertical feed driven cam. Of the plurality of protrusions provided on the surface of the seedling feed belt, between two protrusions adjacent to each other in the left-right width direction, and when viewed from the side, the tip of the protrusion overlaps a part of the vertical feed driven cam. A vertical conveying device for seedlings in a seedling mounting table is provided.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. A shown in FIG. 1 is a riding rice transplanter. The section 2 is connected via a lifting link mechanism 3 so that the planting section 2 can be raised and lowered by a lifting hydraulic cylinder 4.

[0006] As shown in FIGS. 1 and 2,
An engine 11 is provided at a front portion of the body frame 10, and an operating portion 12 is provided at a rear portion.

[0007] A transmission case 13 is attached to the lower portion of the rear of the body frame 10 in an interlocking manner with the engine 11.

[0008] In addition, left and right front axle cases are provided on the lower side of the front part of the body frame 10 so as to face left and right and laterally outward.
15 and 15 and the front wheels 16 and 16
Is installed. Reference numeral 19 denotes a transmission shaft that links the front axle case 15 and the transmission case 13 in an interlocked manner.

A rear axle case 17 is connected to a transmission case 13 at the rear of the body frame 10, and rear wheels 18, 18 are mounted on left and right sides of the case 17, respectively.

Reference numeral 20 denotes a casing body which also serves as a floor surface, a transmission guide, a fender, a seat mounting plate 20a, and the like.
It is integrally molded from a synthetic resin having high rigidity such as FRP and stretched on the body frame 10.

Reference numeral 21 denotes a hood, and the engine 11
And a steering shaft 23 of the driving unit 12 described later.

The driving section 12 has a steering shaft 23 erected immediately after the engine 11 and a handle 24 is mounted on an upper end of the shaft 23, while a steering wheel 24 is mounted on a seat mounting plate 20a located immediately behind the handle 24. The seat 25 is placed on the vehicle.

Reference numeral 30 denotes a speed change lever disposed on the left side of the seat 25, 31 denotes a sub speed change lever protruding upward from the left side surface of the bonnet 21, and 32 denotes a planting portion disposed on the right side of the seat 25. The lifting lever, 33 is a clutch pedal disposed on the left side of the bonnet 21, and 34 is a brake pedal disposed on the right side of the bonnet 21.

As shown in FIG. 1, the planting section 2 has a front end of a planting transmission case 40 attached to the lower rear portion of the elevating link mechanism 3 so as to swing left and right.
41, a seedling mounting table 42 is mounted above the case 40, and a planting claw 43 is mounted at the rear end of the case 40. Reference numeral 44 denotes a transmission shaft interposed between the transmission case and the planting transmission case 40.

The elevating link mechanism 3 includes a body frame.
The front end of the top link 51 and the front end of the left and right lower links 45, 45 are pivotally supported by pivots 51a, 51a on the upper and lower sides of the rear portion of the rear of the top link 51, respectively. , 45 and a rear end of the lifting link mechanism, and the hitch 61 is detachably connected to a planting side hitch 49 erected at the front of the planting portion 2. ing.

At the front ends of the left and right lower links 45, 45, left and right elevating arms 46, 46 are respectively provided in an upright manner. The lifting hydraulic cylinder 4 is interposed therebetween, and connecting rods 48, 48 are interposed between the upper ends of the arms 46, 46 and the rear ends of the left and right lower links 45, 45.

3 and 4, reference numeral 70 denotes a seedling mounting table.
A downward-facing seedling support rail disposed at the back surface of the lower end portion 42-1 of the 42 is mounted on a rectangular support frame 71 so as to be movable in the left-right direction.

Numeral 72 denotes a seedling extracting plate integrally connected to the support frame 71, and has a cutout groove 73 for operating the planting claw 43. Reference numeral 74 denotes a vertical transport device that intermittently vertically feeds the seedling mat 75 on the seedling mounting table 42 and supplies the seedling mat 75 to the lower seedling takeout plate 72 side.The seedling feed belt 76, and the driven upper roller 77, and It is composed of a drive-side lower roller 78 and the like.

The vertical conveying device 74 has a structure in which it is intermittently driven by a lower roller 78 on the driving side, and the seedling mat 75 is placed on the tight side 76-1 of the seedling feeding belt 76, and the seedling mat 75
Are transported vertically. 76-2 is a seedling feed belt
It is 76 slack side.

Reference numeral 79 denotes a planting case, and reference numeral 80 denotes a vertical feed driving cam provided on the planting case 79 side. A roller 80-1 is rotatably pivoted at the tip and provided on the back side of the seedling mounting table 42. The vertical feed driven cam 81 can be intermittently pushed upward. Reference numeral 82 denotes a cam connecting member integrally attached to the left and right sides of the vertical feed driven cam 81, and has an L-shaped cross section.

As shown in FIG. 5, the driven cam 81 for vertical feed is positioned so as to fit into the concave space 76A at an intermediate position where the projection 76-3 of the seedling feed belt 76 is not provided.

Therefore, since the driven cam 81 for vertical feed is located in a low state, the planting case 79 and the seedling mounting table 42 can be brought closer to each other.

The vertical feed drive cam 80, vertical feed driven cam 81, cam connecting member 82 and the like on the planting case 79 side constitute a seedling feed mechanism 80A.

Reference numerals 83-1 and 83-2 denote side plates fixed to both sides of a cam connecting member 82 having a driven cam 81 for vertical feed.
1,83-2 and the cam connecting member 82 are integrally connected so as to straddle the seedling feeding belt 76.

In FIG. 5, the base boss side of one side plate 83-1 is fitted to a lower roller shaft 84 having a hexagonal cross section, and the base boss side 83 of the other side plate 83-2. -3
Has a clutch shaft 86 disposed therein via a one-way clutch 85.

Reference numeral 87 denotes a joint connected to both sides of the clutch shaft 86. The drive shaft 88 and the clutch shaft 87 are connected via the joint 87.
86 are linked.

Reference numeral 89 denotes a return spring wound around the base boss side 83-3 of the other side plate 83-2, and reference numeral 90 denotes a rubber stopper mounted on the other side plate 83-2.

Next, the drive mechanism of the vertical feed drive cam 80 shown in FIGS. 6 and 7 will be described.
The input shaft of the number of seedlings via the bevel gear transmission mechanism 92
Drive 93. Further, a sprocket 94 for driving a planting claw and transmission gears 95, 96, 97 are mounted on the planting number transmission shaft 93. Reference numeral 98 denotes a shift shifter, and 99 denotes a shift slider. The tip protrusion is configured to be selectively fitted to any of the upper shift gears 95, 96, and 97. 100 is the transmission chain, 101
Moving means 10 for reciprocating the seedling mounting table 42 in the left-right direction.
A rotating gear having a reciprocating screw, etc., and a driven gear meshed with the speed change gears 95, 96, 97 on the rotating shaft 101.
103,104,105 are fixed.

Reference numeral 106 denotes a rotating cam fixed to the rotating shaft 101.
The rotating cam 106 is a driven cam fixed on a driving cam shaft 107.
It is in contact with 108.

Reference numeral 109 denotes a rubber stopper provided on one side of the vertical feed drive cam 80. Reference numeral 110 denotes a return spring wound around the drive cam shaft 107, which urges the vertical feed drive cam 80 in the return direction. . 111 is a spring receiver, and 112 is a rubber stopper.

In FIG. 8, reference numeral 113 denotes a stitching clutch mechanism provided on the seedling mounting table 42, 114 denotes a clutch body, 115 denotes clutch claws provided on both sides of the clutch body 114, and 116 denotes a drive shaft 88 and the clutch body 114. , 117 is a bearing that supports the clutch body 114, 118 is an on-off clutch, 11
9 is a spring body for urging the on-off clutch 118, 120 is a spring receiver, 121 is an operation lever, and connects a wire 122. 123 is a brake mechanism.

In FIG. 4, reference numeral 124 denotes a seedling adjusting link 125 for adjusting the amount of seedling collected, a tension spring for pulling up the driven upper roller 77 in an upward direction, and 126 a seedling supply sensor.

The embodiment of the present invention is configured as described above. When the seedling mat 75 on the seedling mounting table 42 is vertically fed downward by the seedling feeding mechanism 80A, the rotating cam 106 shown in FIG. 7 is used. The driven cam 108 on the drive cam shaft 107 and the drive cam 80 for vertical feed are intermittently operated, and at the same time, the seedling mounting table 42 is moved
Reciprocate in the left and right direction by 102.

Therefore, when the seedling mounting table 42 moves to the left end or the right end, the vertical feed driving cam 80 causes the vertical feed driven cam 81 to rotate upward.

Then, the rotation of the driven cam 81 for vertical feed rotates the clutch shaft 86 via the one-way clutch 85 by one stroke. As a result, the joint 87 and the drive shaft 88 rotate, and the lower roller shaft 84 and the seedling feed belt 76 rotate intermittently to move the seedling mat 75 downward.

Next, planting is performed while cutting the seedling mat 75 with the planting claws 43 while moving it in the horizontal direction.

In this case, since the vertical feed driven cam 81 is inserted into the middle of the projection 76-3 provided on the surface of the seedling feed belt 76 and is positioned to face each other, the vertical feed driven cam 81
Does not come into contact with the seedling feed belt 76 even if it moves up and down, so that the operation is performed smoothly.

As described above, according to the above embodiment, the seedling mounting table
A seedling feeding mechanism 80A is provided at 42, and the seedling mounting table 42 is intermittently rotated at the stroke end of the left and right reciprocating motion, while the seedling mat 75 is vertically fed while the seedling mat 75 is vertically fed, by the planting claws 43. In a rice transplanter in which seedlings are planted, a vertical feed driven cam 81 is inserted in the middle of a projection 76-3 provided on the surface of a seedling feed belt 76 of a seedling feed mechanism 80A and is positioned facing each other. Therefore, the swing angle of the vertical feed driven cam 81 can be sufficiently secured by a required amount, and a gap between the vertical feed driven cam 81 and the seedling feed belt 76 can be ensured.
The intermittent operation is smooth, and the seedling mat 75 can be reliably fed vertically by a predetermined amount.

Further, since the seedling mat 75 can be reliably fed vertically, the rice transplanting operation can be performed efficiently.

FIGS. 9 and 10 show another embodiment relating to a seedling collecting link for adjusting the amount of seedling. Numeral 130 denotes a seedling adjusting link, to which a hand-side adjusting lever 131 is fixedly attached. ing. 132 is a seedling removal plate, 133 is a support frame, and 134 is a connecting tool fitted to the seedling adjustment link 130 and a lower guide plate.
Linked to 135.

Reference numeral 136 denotes a horizontal axis for fixing the seedling adjusting link 130, and reference numeral 137 denotes a stopper for adjusting the downward return amount of the vertical feed driven cam 138-2, which is fixed to the horizontal axis 136. The stopper 137 has a length L equal to or longer than the lateral movement distance on the seedling mounting table side. 138-1 is a vertical feed drive cam, and 138-3 is a seedling feed belt.

Then, the horizontal axis 136 of the hand-side adjustment lever 131 for vertically moving the seedling mounting table side by rotating the seedling collection adjustment link.
Since the vertical feed driven cam 138-2 on the seedling mounting table side is provided on the upper side, the seedling feed amount can be automatically changed in response to a change in the seedling collection amount.

Therefore, according to the above embodiment, the vertical feed amount of the seedlings can be changed only by adding the stopper member at the fulcrum of the seedling adjusting link 130, that is, the feed amount is directly proportional to the change of the seedling amount. It can change the vertical feeding of seedlings.

In addition, the structure is simple and the reliability of the amount of seedlings fed vertically can be improved.

[0045]

According to the present invention, in a rice transplanter configured to provide a seedling feeding mechanism on a seedling mounting table and to vertically feed a seedling mat by intermittently operating the seedling feeding mechanism, the seedling feeding mechanism comprises: , A seedling feed belt, and a longitudinal feed driven cam for intermittently vertically transporting the seedling feed belt in interlocking connection with the seedling feed belt are disposed facing each other, and the vertical feed driven cam is A position between two adjacent protrusions in the left-right width direction among a plurality of protrusions provided on the surface of the seedling feed belt, and where the tip of the protrusion overlaps a part of the vertical feed driven cam in side view. Therefore, the protrusion of the seedling mat and the driven cam for vertical feeding do not come into contact with each other, and the driven cam for vertical feeding and the seedling feeding belt can be brought as close as possible.

In addition, since the swinging of the driven cam for vertical feeding and the rotation of the seedling feeding belt are reliably performed, the seedling planting operation can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with a seedling mounting table according to the present invention.

FIG. 2 is a plan view of the rice transplanter.

FIG. 3 is a side view of a main part of the seedling mounting table according to the present invention.

FIG. 4 is a sectional side view of the main part.

FIG. 5 is a sectional plan view of the main part.

FIG. 6 is a schematic side view of a planting mission case.

FIG. 7 is a sectional plan view of the planted transmission case.

FIG. 8 is an explanatory view of a streak clutch portion of the seedling mounting table.

FIG. 9 is a schematic side view showing another embodiment of the seedling feeding mechanism.

FIG. 10 is a schematic plan view of the same.

FIG. 11 is a schematic side view showing a conventional seedling feeding mechanism.

[Explanation of symbols]

 42 Seedling table 43 Seeding claw 75 Seedling mat 76 Seedling feed belt 76-3 Projection 80A Seedling feed mechanism 81 Vertical feed driven cam

Claims (1)

(57) [Claims] A seedling feeding mechanism (80A) is provided on a seedling mounting table (42),
The seedling feed mechanism (80A) is operated intermittently to
In a rice transplanter configured to feed the mat (75) vertically , the seedling feed mechanism (80A) includes a seedling feed belt (76) and a seedling feed belt.
The seedling feed belt (76) intermittently and vertically
Face the vertical feed driven cam (81) for transport
The vertical feed driven cam (81)
Of the protrusions (76-3) provided on the surface of
Between two adjacent projections (76-3, 76-3)
The front end of the protrusion (76-3) and one of the vertical feed driven cams (81)
It is characterized by being arranged at the position where the part overlaps
A vertical transport device for seedlings on a seedling mounting table.