JPH0746918A - Seedling feeder in seedling planter - Google Patents

Abstract

PURPOSE:To provide a seedling feeder capable of surely feeding seedlings and preventing a missing plant or the disorder of the seedlings from occurring and precisely sensing the reduction in the seedlings. CONSTITUTION:This seedling feeder in a seedling transplanter is constructed by providing left and right holes in a bottom plate (13b) of a seedling-carrying platform 13, supported by a machine body and reciprocating left and right so as to leave a narrow seedling receiving plate part in the bottom plate (13b) and two seedling feeding belts 21 and 21, respectively receiving nursery beds in the left and right holes and transferring the nursery beds. In the seeding feeder, the two seedling feeding belts 21 and 21 are installed side by side left and right with a narrower interval than the belt transverse width and each detecting unit 30 for sensing the presence or absence of seedlings (A) in the width in the vertical directions in which the two seedling feeding belts 21 and 21 perform actions to feed the seedlings is installed to sense the reduction in the seedlings placed on the seedling-carrying platform 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling feeding device for a seedling planting machine.

[0002]

2. Description of the Related Art As a conventional technique of this kind, as shown in Japanese Utility Model Laid-Open No. 56-30726, two seedling feeding belts are provided on the bottom plate, whereby seedlings placed on the bottom plate are provided. There is something to send out. However, since the two conventional seedling feeding belts are arranged on the bottom plate at a distance wider than the width of the seedling feeding belt, the seedlings cannot be fed reliably, which causes a lack of stock or a collapse of seedlings. It was Further, no means for detecting the decrease of the placed seedlings was provided.

It is an object of the present invention to provide a seedling supply device capable of surely feeding seedlings and preventing the occurrence of stockouts or collapse of seedlings and detecting an appropriate decrease in seedlings.

[0004]

In order to solve the conventional problems, the present invention left and right leaving a narrow seedling receiving plate portion on a bottom plate 13b of a seedling placing table 13 which is supported by a machine body and reciprocates left and right. In a seedling feeding device of a rice transplanter in which holes are provided and two seedling feeding belts 21 and 21 for receiving and transferring seedling beds are respectively arranged in the left and right holes, the two seedling feeding belts 21 and 21 are wider than the belt lateral width. Also, the detectors 30 are arranged side by side at a narrow interval and two seedling feeding belts 21, 21 detect the presence or absence of the seedlings A within the width in the vertical direction where the seedling feeding belts 21 act.
Is provided to detect the decrease of the seedlings placed on the seedling placing table 13, and the seedling supplying device in the seedling planting machine.

[0005]

According to the present invention, since the two seedling feeding belts 21 and 21 are arranged side by side with a space narrower than the belt width, the seedling A placed on the bottom plate 13b is It is possible to prevent the occurrence of missing seedlings, seedling collapse, etc. that are received and transferred by the two wide seedling feeding belts 21, 21 and are the upper and lower sides where the two seedling feeding belts 21 and 21 perform seedling feeding action. Since the detector 30 for detecting the presence or absence of the seedlings A within the width of the direction is provided, the lateral movement of the seedlings can be prevented by being properly received by the two wide seedling feeding belts 21 and 21 as described above. As a result, the false detection is prevented, the decrease of the seedling can be detected accurately, and the appropriate seedling planting work can be performed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding type rice transplanter according to an embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 is a passenger tow vehicle, which is a pair of left and right front wheels 4 mounted on the front upper part of the body 2 and rotated by a prime mover covered with a hood 3.
4 and rear wheels 5 and 5 are provided on the lower side, a steering post is provided on the rear side of the bonnet 3, a steering wheel 6 is provided on the steering post, and a cockpit 7 is provided behind the steering wheel. Reference numeral 8 denotes a chain case, which extends obliquely rearward and downward from the left and right of a mission case forming a part of the machine body 2, and the rear wheels 5, 5 are attached to the lower end thereof.

Reference numeral 9 denotes a support frame of the cockpit 7, which is connected to the left and right chain cases 8 and is provided in a gate shape in a back view.
Reference numeral 10 denotes a preliminary seedling placement table, which is provided on both left and right sides of the support frame 9. Reference numeral 11 is a sighting device, which is provided on the central front part of the bonnet 3. And this sight 11
Is equipped with a lamp L, and the lamp L is turned on to issue a signal (warning) when the seedling tank described later is low in seedlings. 12 is a rice transplanter frame,
The main planted mission case 12a is mainly used, and the seedling mounting table 13 is provided on the upper part of the machine frame 12 so as to reciprocate left and right.
Are obliquely installed so that the rear is lower, and the seedling planting devices 14 ... Are mounted on the rear end side of the machine frame 12.

That is, FIG. 3 shows a seedling table 13 for four rows,
Four bottom plates 13 provided with side plates 13a and 13a on the left and right
The bottom plate 13b is open at its rear end and front end. Reference numerals 15 and 16 denote supports that support the back surface of the seedling stand 13 and can reciprocate left and right.

Reference numeral 17 denotes a seedling receiving frame, which is substantially L-shaped in a side view and is provided integrally with the support 15, and is fixed to the rice transplanter frame 12 at the lower end of the seedling mounting table 13 Stand 13
Is provided longer than the entire width of the seedlings, and seedling dividing ports 18 are provided corresponding to the respective bottom plates 13b. Further, the seedling planting device 14 ... A pair of subplanting mission cases 12b.1 extending backward from the main planting mission case 12a located on the lower side of the seedling table 13 with a predetermined space left and right.
2b is attached to the rear end of the 2b by a crank and a rocking actuating body, and the planting claws 14a are swung so as to pass through the seedling dividing port 18 from the top to the bottom to cut off the seedlings, It is designed to be planted on the soil surface of.

Numerals 19, 20 and 20 are centered and side-level ground floats, the front part of which is vertically movable below the rice transplanter frame 12. 21 is a seedling feeding belt, which is from the left and right side plates 13a, 13a to 1/3 of the width of the bottom plate 13b.
It is composed of a wide rubber belt extending to the center side as described above, and a large number of projections a are provided on the upper surface thereof.
The bottom plate 13b at the lower side of the bottom plate 13b ... with the upper and lower sides of the bottom plate 13b ... left in the longitudinal direction with a little left and right center portion left (narrower than the lateral width of the seedling feeding belt 21). A pair of upper and lower driven rollers 24, which are provided so as to project above the seedling feeding belts 21 ...
··· Drive rollers 23 are integrally installed on the seedling table 13. The lower drive rollers 23 are supported by a shaft 25 on which a ratchet (not shown) is interposed, and the ratchet lever 26 thereof rotates on the side of the main planted mission case 12a. When engaging the drive rotor 27, the drive rollers 23 rotate to rotate the seedling feed belts 21 in the arrow A direction.
The rotor 27 and the ratchet lever 26 are provided so as to be engaged only when the seedling mounting table 13 reaches the left and right lateral ends.

Reference numeral 28 denotes a detector, which is a microswitch 2
9 ... and the detection body 30 ...
The hole 31 formed in the seedling tank bottom plate 13b so as to detect the presence or absence of the plate-shaped seedling A within the width in the vertical direction that acts between the pair of left and right seedling feeding belts 21.
The spring 32 holds the seedling feeding belt 21 in a form projecting higher than the upper surface of the seedling feeding belt 21. And the detection body 30 is
In a side view, the seedling feeding belt 21 between the rollers 23 and 24 stands up at a linear position. Reference numeral 33 is a rotation support shaft of the detection body 30. The micro switches 29 ... Are attached to the back side of the bottom plate 13b of the seedling mounting table 13, and the detection body 30 is provided.
... is pressed by the weight of the flat seedling A, the switch 29
Are turned off and the switches 29 are turned on by the biasing force of the springs 32 when they are not pressed.

The microswitch 29 of each detector 28 is energized to the lamp L in the electric circuit as shown in FIG. 34 is a main switch. 35
Is an elevating link, the bases of the upper link 35a and the lower link 35b are pivotally attached to the pillar frame 9, and the tip ends of both links are connected by a vertical link 35c, and the rice transplanter frame 12 is connected to the vertical link 35c. It is mounted so that it can rotate freely via a rolling shaft.

Reference numeral 36 denotes a hydraulic cylinder device, which is a towing vehicle 1.
The base of the cylinder is pivotally attached to the fuselage side of the, and the tip of the piston is connected to the upper link 35a and the fixed arm,
The rice planter frame 12 is configured to move up and down by operating the elevating link 35 up and down. In the configuration above,
A rectangular flat plate-shaped seedling A ... grown in a mat shape is placed on the seedling tank 13a ... And the rice transplanter is operated.

At this time, the respective detection bodies 30 ... Are under the flat plate-shaped seedlings A ... and fall down, the respective switches 29 ... Are turned OFF, and the lamp L is extinguished. Since the seedling table 13 moves to the left and right with the lower end of the flat plate-shaped seedling A ... in contact with the inner wall surface of the seedling receiving frame 17, the planting that passes through the seedling dividing opening 18 ... from top to bottom. Attached claw 14a
The seedlings for one strain are cut off in each of the…, and the cut-off seedlings descend and are inserted into the mud surface below. Each flat seedling A ... is cut off laterally for each stock, and when the seedling mounting table 13 reaches the lateral end, one horizontal row is cut off. At this time, the rotor 27 Pushes and turns the ratchet lever 26, the shaft 25 turns the lower drive roller 23, and the seedling feeding belt 21 turns in the direction of arrow A, and the plate-shaped seedling A is lowered by the amount cut off. As the rice planting work progresses in this way, the upper ends of the plate-shaped seedlings A ...
One passes over the detector 30. Then, the detection body 30 is pulled by the spring 32 and stands up, the micro switch 29 is turned on, and the lamp L is lit. The operator sees the lit lamp L, stops the operation of the rice transplanter, and places the spare flat seedling A on the spare seedling stand 10 on the bottom plate 13b on which the above-mentioned detection body 30 stands. Place it and add it to the upper end of the flat seedling A on it.

At this time, of the left and right plate-shaped seedlings A ...
If the upper end of the seedling feed belt 21 ... Appears on the upper end of the seedling feed belt 21 ... If a lamp L is not lit, there is a new flat seedling A on the seedling A. To reduce the frequency of stopping rice transplanter operation for efficient work. In particular, since the two seedling feeding belts 21 and 21 are arranged side by side at a narrower interval than the belt lateral width, the seedlings A placed on the bottom plate 13b are appropriately wide. It is possible to prevent the seedling feeding belts 21 and 21 from receiving and transferring the seedlings and collapse of seedlings, and the two seedling feeding belts 21 and 21 perform seedling feeding action. Since the detection body 30 for detecting the presence or absence of the seedlings is provided, as described above, the seedlings of the portion which are received by the two wide seedling feeding belts 21 are accurately detected and lateral movement of the seedlings is prevented. As a result, false detection can be prevented, the decrease in seedlings can be detected accurately, and appropriate seedling work can be performed.

[Brief description of drawings]

FIG. 1 is an overall side view of a riding type rice transplanter.

FIG. 2 is a partial cross-sectional side view of a main part.

FIG. 3 is a plan view of a main part.

FIG. 4 is an electric circuit diagram.

[Explanation of symbols]

13 seedling mounting base 13a side plate 13b bottom plate 14a planting claw 21 seedling feeding belt 23 drive roller 24 driven roller 30 detector A seedling

Claims (1)

[Claims] 1. A left and right hole is provided in a bottom plate 13b of a seedling table 13 which is supported by a machine body and reciprocates left and right, leaving a narrow seedling receiving plate portion, and the left and right holes respectively receive and transfer seedbeds 2 In the seedling feeding device of the rice transplanter in which the two seedling feeding belts 21 and 21 are arranged, the two seedling feeding belts 21 and 21 are arranged side by side with a space narrower than the lateral width of the belt. The seedling feeding belts 21 and 21 are provided with a detection body 30 for detecting the presence or absence of the seedlings A in the vertical width, which acts to feed the seedlings, and detects the decrease of the seedlings placed on the seedling placing table 13. A seedling supply device in a seedling planting machine.