JP2546382B2 - Transverse feeder for seedling mount - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lateral feeding device for a seedling table provided in a vegetable transplanter or the like.

[Prior art] The seedling mounting table on which the seedlings are placed is reciprocally moved left and right by a lateral feeding device to sequentially supply the seedlings to a predetermined seedling take-out port, and the seedlings supplied to this seedling take-out port are given a predetermined trajectory. There is a vegetable transplanter in which a planting rod of a planting device that moves up and down is held and planted in a field. The transverse feed device and the planting device are adapted to operate in synchronization with each other by transmission from a common drive shaft, and the operation timings of these two devices have been determined at the time of assembly.

[Problems to be Solved by the Invention] However, the timing of the operation of the two is misaligned during use, and as shown in FIG. 6, for example, the planting rod 35 is placed at a position deviated from the center of the seedling take-out port 31. After passing, the planting rod 35 could not properly hold the seedlings and could not perform good planting. For example, as disclosed in the microfilm of Japanese Patent Application No. 59-67014, it was possible to adjust the mounting position of the seedling mounting table with respect to the lateral feeding device to the left and right with a screw or the like. Since the mounting position of the seedling mounting table with respect to the boss body that reciprocates by engaging with the groove of the lateral feed shaft is adjusted, it is only possible to adjust the left and right position of the seedling mounting table with respect to the reciprocating mechanism, In the case where the seedling take-out position was misaligned between the forward and backward strokes of the stand, it was not possible to adjust the two so that they coincided with each other. Therefore, an object of the present invention is to make it possible to easily adjust the operation timings of the lateral feeding device of the seedling table and the planting device even after assembly.

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the lateral feeding device for a seedling mounting table according to the present invention includes a lead cam shaft having a spiral groove, and a lead metal that engages with the spiral groove of the lead cam shaft and reciprocates in the axial direction of the lead cam shaft by rotation of the lead cam shaft. In the transverse feeding device of the seedling mounting table for laterally reciprocating the seedling mounting table by the action of the lead cam shaft and the lead metal, the lead metal is provided so as to be axially positionally adjustable with respect to the lead cam shaft. Is characterized by.

[Operation] If the seedling dividing positions on the forward and backward strokes of the seedling mounting table are misaligned, they can be easily matched by adjusting the axial position of the lead metal with respect to the lead cam shaft. As a result, it is possible to always take out the seedlings in proper positions.

[Embodiment] An embodiment shown in the drawings will be described below.

A vegetable transplanting machine 1 of the illustrated example has a main mission case 2 and an engine 3 arranged at the front of the machine body, and front wheel transmission cases 6 are provided at the tips of cylindrical portions 5, 5 projecting from the left and right sides of the mission case 2. , 6 are installed diagonally rearward and downward, and the front wheel transmission case 6,6
Front wheels 7, 7 as driving wheels are pivotally supported at the lower end of the shaft. A front transmission frame 10 extends rearward and is fixedly connected to one rear side (left side in the illustrated example) of the main mission case 2, and a planting section mission case 11 is provided at a rear end thereof. Further, a rear transmission frame 13 extends rearward from the planting section mission case 11, and a planting device 14 is provided at the rear end thereof. A rear wheel support shaft 16 is laterally installed at a lower front position of the planting section mission case 11, and a rear wheel support arm 17 is provided obliquely downward and rearward from the end of the support shaft.
The rear wheel 18 is pivotally supported at the lower end of the. Further, a dirt excavating device 20 and a soil covering device 21 are attached to the rear wheel support shaft 16. The front wheel transmission cases 6, 6 and the rear wheel support arm 17
Both of them are attached so as to be rotatable up and down about the base portion, and the height of the machine body is adjusted by appropriately rotating them with a lifting device described later.

The inside of the planting section mission case 11 is configured as shown in FIG. That is, a drive shaft 41 and a cam shaft 42, which are supported by the bearings 40, ... and which are parallel to each other, and a cylinder shaft 43 fitted to the outer peripheral portion of the cam shaft are provided, and a sprocket wheel 45 is attached to the cylinder shaft 43. The chain 46 provided in the front transmission frame 10 is hung on this. Also, the cylinder axis
43 is a spline part 43a with a spline groove cut on the outer periphery
Is formed, and a gear cylinder 47 having two gear portions 47a and 47b is fitted therein. The gear cylinder 47 can be slid in the axial direction by a shifter 50 operated by an inter-stock lever 49. A gear cylinder 51 having gear portions 52a and 52b meshing with the gear portion of the gear cylinder 47 is fitted on the drive shaft 41 side, and the gear cylinder 52 is transmission-coupled to the drive shaft 41 via a fixed position clutch 53. Has been done. The fixed position clutch 53 is urged in the direction of the gear cylinder 52 by a spring 54, and normally the mutual claw portions 53a,
Although 52c bites each other for transmission, the planting lever 55 presses the tapered surface 53b, so that the clutch escapes in the direction opposite to the gear cylinder 52 against the repulsive force of the spring 54 and transmission is performed. It is released, and the drive shaft 41 is in the specified position (angle).
Stop at The drive shaft 41 has a one-way clutch.
56 is provided so that it can rotate only in one predetermined direction. The drive shaft 41 is a shaft for driving the planting device 14 and the lateral feeding device 70 of the seedling mounting table described later, and sprocket wheels 60, 61 on which chains 58, 59 for transmitting to both devices are hung are attached. The drive shaft 41 and the cam shaft 42 are constantly transmission-coupled by gears 63 and 64. Camshaft 4
One end of 2 protrudes out of the case, and the cam attachment shaft 65 connected to the protruding end has vertical feed cams 67, 67 for operating the seedling vertical feed belt 30 described later and earth digging for operating the earth digging device 20. A cam 68 and a soil cover cam 69 for operating the soil cover device 21 are attached.

On the upper part of the machine, a seedling mounting table 25, which is slightly inclined so that the front part is in a higher position, is slidably supported by front and rear support rails 26, 27 provided in the left-right direction, and the seedling mounting table is laterally moved by a lateral feeding device 70. It can be reciprocated along the rail. The seedling placing table 25 is provided at its bottom with a seedling vertical feeding belt 30 stretched around a pair of front and rear rollers 30a and 30b. Further, as shown in FIG. 5, a receiving frame 32 integrally formed with the rear rail 27 and having a seedling take-out port 31 formed in the center thereof is provided adjacent to the rear side of the seedling placing table 25. It is installed at almost the same height as. As a seedling 110 for transplantation, for example, pots 111a, ... As shown in FIG. 7 are sown in each pot of a seedling raising device 111 arranged vertically and horizontally, and this seed is inverted to sprout from a sprout hole 111b. The pots grown are used, and the seedlings in this pot are arranged vertically and horizontally on a seedling mounting table as shown in FIG. At the time of transplantation, the lateral feeding device 70 reciprocates the entire seedling placing table 25 in the left-right direction in synchronization with the operation of the planting device 14 etc.
When 25 reaches the end of the left and right stroke, the vertical seedling feeding belt 30 rotates in a predetermined direction by a certain amount and sends the seedlings to the seedling take-out side by one row, and the trapezoidal seedlings are sequentially seeded one by one. It is supplied to the outlet 31.

The lateral feeding device 70 of the seedling mounting table of this vegetable transplanter has the structure shown in FIGS. 2 and 3. Lead cam shaft 71
Is a shaft having spiral grooves 72, 72 'formed on the outer periphery thereof, and the upper end of the chain case 74 for accommodating the chain 59 and the seedling table.
It is supported between a fixture 75 provided on the opposite side of the chain case with 25 in between, and is transmitted from the planting section mission case 11 via a chain 59 as a transmission means to rotate in a predetermined direction. The chain 59 is hung on a sprocket wheel 76 attached to the lead cam shaft 71. The moving rod 78 is a rod body having a threaded portion 78a formed at the center, and the left and right ends of the moving rod 78 are integrally attached to the bottom of the seedling mounting table 25 in parallel with the lead cam shaft 71. The lead metal 80 holds a claw member 81 having a lead claw 81a that engages with the spiral grooves 72, 72 ', is slidably fitted to the lead cam shaft 71, and has a pair of mounting plates 82, 82'. It is attached to the moving rod 78 via. The mounting plates 82 and 82 'have a through hole 8 at the top for inserting the moving rod.
3,83 and a vertically elongated hole for mounting lead metal on the bottom 84,8
4 and has a through hole 8 in one plate 82.
A moving rod fixing nut 85 is fixedly attached so as to match the shaft center of 3. The lead metal 80 and the mounting plates 82, 82 '
The pin 87 inserted into the elongated holes 84, 84 is screwed onto the pin receiving members 88, 88 of the lead metal so that the two are integrated. The long hole 84 is a flexible mechanism for adjusting the mounting position, and by changing the insertion position of the pin 87 in the long hole 84, it is possible to adjust the timing of holding the seedling by the planting rod 35 of the planting device described later. it can. Further, the moving rod 78 and the fixed plates 82 and 82 'are integrated by inserting the moving rod into the through holes 83 and 83 of the plate and screwing the threaded portion 78a of the moving rod into the fixed nut 85. ing. By changing the screwing position of the fixing nut 85 and the screw 78a, which are timing adjusting means, and changing the mounting position of the lead metal 80, the moving rod is moved.
The phases of the movements of 78 and the lead cam shaft 71 are relatively shifted, and the timing of the lateral movement of the seedling placing table 25 and the operation of the planting device 14 are adjusted. When adjusting the timing, as shown in FIG. 6, when the seedling mounting table 25 is located at the end of the left and right stroke and the planting rod 35 is located at the seedling take-out port 31, the side plate of the seedling mounting table is located. The distance l between the 25a and the one claw 36 of the planting rod 35 is adjusted to be appropriate. The lead cam shaft 71 is covered with a bellows type elastic cover 86, 86 ′ provided between the chain case 74 and the lead metal 80 and between the fixture 75 and the chain case 74.

Further, FIG. 4 shows a transverse feed device having a different configuration,
This lateral feed device 70 'is provided with a timing adjusting means between a sprocket wheel 76' on which a chain 59 as a transmission means from the drive shaft 41 is mounted and a lead cam shaft 71 '. That is, the sprocket wheel 76 'is integrally formed with the tubular shaft 90 fitted to the lead cam shaft 71', and the cylindrical chrysanthemum seat 92 is non-rotatably fitted to the end portion of the lead cam shaft 71 'by the key 91. The cylindrical shaft 90 and the chrysanthemum seat 92 are formed on the end faces facing each other, and the chevron-shaped bite projections 90a, ... 92a,
It has been bitten by. Kikuza 92 is a washer 94, washer 9
5 、 Bolt 96 is attached so as not to move in the axial direction. Since the occlusal protrusions 90a, ... 92a, ... Are continuously formed at a constant pitch, the phases of the sprocket wheel 76 'and the lead cam shaft 71' are relatively adjusted by changing the occlusal positions of the two.

Either the timing adjusting means shown in FIGS. 2 and 3 or the timing adjusting means shown in FIG. 4 may be adopted, and the phases of the movements of the planting device 14 and the seedling table 25 are relatively adjusted. Anything can be used.

The planting device 14 includes a plurality of shafts, gears, etc.
The rotating case 33, the second rotating case 34, and the planting rod 35 are provided, and the planting rod has a pair of moving claws 36, 36 and one seedling extruded body 37.
Is provided. The first rotation case 33 rotates counterclockwise in FIG. 1 at a predetermined speed corresponding to the rotation speed of the front wheels 7, 7, while the second rotation case 34 rotates counterclockwise (clockwise direction). Rotating at a high speed, the planting rod 35 moves vertically by drawing an elongated elliptical orbit. During this time, the planting rod 35 and the transplanted nail 3 attached to it
6,36 and the seedling extruded body 37 maintain the same posture throughout. P in FIG. 1 represents the locus of the tip of the transplanted nail, and at the position of P _1, that is, the seedling take-out port 31, the seedling extrusion body 37 is locked on the upper surface of the pot portion of the seedling 110 and the pair of transplanted nails 36, 36 is closed. The seedlings located at the seedling take-out port 31 are divided into one pot seedling, which is held by a pair of transplanted nails. P ₂ That is, the transplanting nails 36, 36 open at the bottom of the locus, and the pot seedlings that are being held are excavated by the soil excavator 2
It is planted in the hole for transplant formed in the field by 0. Moreover, transplantation claw moves downward seedlings extrudate 37 P ₃ was a bit higher than P _2, so separated from forcibly implanted nail lifted remain attached to the implanted nail seedlings, ensures transplant seedlings To be done. After the transplantation, the soil is covered by the soil cover device 31.

The lifting device for the machine body is of a hydraulic type, and a hydraulic pump 90 is integrally provided at a rear portion of the main mission case 2, and a driving hydraulic cylinder 92 and a hydraulic valve 93 thereof are provided behind the hydraulic pump 90. A horizontal rod 95 is integrally provided at the rear end of the hydraulic cylinder 92, the left and right front wheel connecting rods 96, 96 at both ends of the horizontal rod, and the rear wheel support rod 97 are attached only at the left end. ing. These connecting rods are respectively connected to the tips of arms 98, 98 projecting from the cylindrical portions 5, 5 and an arm 99 projecting on the rear wheel support shaft 16. This lifting device is controlled by a planting depth control device 100 described below.

That is, the planting depth control device 100 includes a grounding body 101 that moves along the ridges below the rear wheel support shaft 16, and the vertical movement of this grounding body causes the hydraulic valve 93 to move through the arm 103 and the rod 104. Hydraulic cylinder 92 transmitted according to the unevenness of the ridge
Is designed to expand and contract. For example, when the ridge 105 rises and the grounding body 101 moves upward, the valve 93 is switched in the direction in which the hydraulic cylinder 92 is extended. Hydraulic cylinder
When 92 is extended and the horizontal rod 95 is moved rearward, the tubular portions 5, 5 and the rear wheel support shaft 16 are rotated through the connecting rods 96, 96, 97 attached thereto, and the front wheels 7, 7 and At the same time, the rear wheels 18 move downward and the aircraft is lifted. On the contrary, when the ridge 105 is lowered and the grounding body moves down, the aircraft is lowered. In this way, by appropriately raising and lowering the machine body according to the change in the height of the ridges by the operation of the planting depth control device 100, the planting working unit maintains a constant height from the ridge surface, and the planting depth can be increased. It can be held constant.

[Effects of the Invention] As described above, the lateral feeding device for a seedling table according to the present invention can easily adjust the lateral feeding timing of the seedling table with respect to the seedling planting operation by the planting device. Because you can
It became possible to always carry out good planting.
This timing adjustment can be easily performed by rotating the lead metal around the lead cam shaft in the rotation stopped state, and troublesome work such as releasing the connection state between the moving rod and the seedling mounting table is unnecessary.

[Brief description of drawings]

FIG. 1 is a side view of a vegetable transplanter which is an example of the present invention, and FIG.
The figure is a side view of the main part, FIG. 3 is a plan sectional view thereof, FIG. 4 is a cross-sectional view of the main part of a different embodiment, and FIG. 5 is an explanatory view showing a state in which seedlings are placed on a seedling placing table, FIG. 6 is an explanatory diagram of the tamming adjustment, and FIG. 7 is an explanatory diagram of the seedling raising device. 1 ... Vegetable transplanter, 2 ... Main mission case, 3 ...
Engine, 7 ... front wheel, 11 ... planting part mission case, 14 ... planting device, 18 ... rear wheel, 25 ... seedling stand, 41 ...
… Drive shaft, 70,70 ′ …… Transverse feed device, 71,71 ′ …… Lead cam shaft, 78 …… Movement rod, 78a …… Screw part, 80 …… Lead metal, 82,82 ′ …… Mounting plate, 90 …… Cylinder axis, 92…
… Kikuza.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Kihara 1840 Nishi-Osaki, Sanjo City, Niigata Niigata Iseki Manufacturing Co., Ltd. (56) Bibliography Sho 60-12915 (JP, U)

Claims (1)

(57) [Claims] 1. A lead cam shaft having a spiral groove, and a lead metal that engages with the spiral groove of the lead cam shaft and reciprocates in the axial direction of the lead cam shaft when the lead cam shaft rotates. In the lateral feeding device of the seedling table for laterally reciprocating the seedling table by the function of, the lead metal is provided so as to be axially positionally adjustable with respect to the lead cam shaft. Feeder.