JPS645467Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a rice transplanter in which a seedling planting device is mounted on a traveling vehicle body so as to be able to roll freely. This invention relates to a seedling succession device that supplies seedling pine to a seedling stand in the device.

[Conventional technology]

Utility Model Application Publication No. 54-61021 as a prior art,
A rice transplanter comprising a seedling planting device equipped with a left-right reciprocating seedling stand tilted so that the upper part of the seedling stand approaches the running car body, which is mounted on the running car body. It is proposed that the seedlings be transferred by arranging the preliminary seedling stand closer to the seedling stand in the seedling planting device and tilting it substantially parallel to the seedling stand.

[The problem that the idea aims to solve]

However, when attaching the seedling planting device to the traveling vehicle body, if the seedling planting device is mounted in a rollable manner, if the seedling planting device is tilted in the left and right direction with respect to the traveling vehicle body, the seedling The table and the spare seedling stand on the side of the traveling vehicle become non-parallel, creating a level difference between the seedling stand and the spare seedling stand, making it impossible to smoothly transfer seedlings from the spare seedling stand to the seedling stand. Moreover, in the prior art mentioned above, when transferring seedlings, the seedling mounting stand in the seedling planting device is placed in the spare seedling stand on the traveling vehicle side when viewed from above of the rice transplanter. Since it is necessary to move the seedlings horizontally to the matching site, not only is this operation laborious and time-consuming, but also the seedlings in the seedling planting device must be Since the planting mechanism takes out the seedlings from the seedling stand, seedling loss occurs.

The present invention aims to solve these problems.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a horizontally reciprocating seedling platform on a connecting hitch that protrudes vertically from the traveling vehicle body, and the upper part of the seedling platform is connected to the traveling vehicle body. In a rice transplanter comprising a seedling planting device that is tilted so as to approach the surface of the rice transplanter, the seedling planting device is connected in a rollable manner. A supporting bracket configured to be tilted close to the seedling platform and approximately parallel to the seedling platform is provided so as to be able to roll freely with respect to both the seedling planting device and the traveling vehicle body, and furthermore, the preliminary seedling platform is configured to be tilted approximately parallel to the seedling platform. It is configured so that it can be mounted so that it can be moved left and right.

[Functions and effects of the idea]

In this way, if the supporting bracket for the spare seedling stand on the traveling vehicle body side is provided on the connecting hitch so that it can roll freely relative to both the traveling vehicle body and the seedling planting device, it is possible to prevent the seedling planting device from moving against the traveling vehicle body. Even in a rolling inclined state, the spare seedling stand on the side of the running vehicle can be made parallel to the seedling stand of the seedling planting device, and the spare seedling stand on the side of the running car can be placed parallel to the stand for seedlings in the seedling planting device. By being configured to be movable in the left and right directions with respect to the support bracket, the lateral movement of the auxiliary seedling stand causes the auxiliary seedling stand to match the seedling mounting stand in the seedling planting device in a plan view of the rice transplanter. It is possible.

Therefore, according to the present invention, the seedlings can be transferred smoothly from the spare seedling stand to the seedling stand without any steps, and damage to the seedlings can be prevented. In addition, since there is no need to move the seedling table horizontally, the number of steps can be reduced and the loss of seedlings can be prevented.

〔Example〕

Hereinafter, a drawing will be explained in which an embodiment of the present invention is applied to a riding-type 6-row rice transplanter. There are two front wheels (not shown) attached to the front and a pair of left and right axle cases 3 at the rear.
The vehicle consists of two rear wheels 4 attached via a vehicle body frame 2, and a driver's seat 5 is provided on the upper surface of the vehicle body frame 2, and is driven forward by an engine (not shown) mounted on the vehicle body frame 2.

Reference numeral 6 denotes a seedling planting device located at the rear of the traveling body 1, and the seedling planting device 6 is a transmission case 7.
Three planting cases 8 extend from the transmission case 7 in a lateral direction at appropriate intervals toward the rear, and a float 9 is attached to the bottom surface of each planting case 8 so that the front end of the float 9 can move up and down freely.
and a left-right reciprocating seedling carrier 10 whose upper end is inclined so as to approach the traveling vehicle body 1.
On both the left and right sides of each planting case 8, a vertically swinging seedling planting mechanism 12 is provided, which divides the seedlings one by one from the seedling mat on the seedling carrier 10 and then plants them on the field surface 11 on both sides of each float 9. The seedling carrier 10 has its lower end fitted into a seedling removal guide rail 13 attached to the upper surface of the transmission case 7, and a support arm 15 erected from the transmission case 7 is attached to a rail 14 provided in the middle of the back surface of the seedling carrier 10.
The roller 16 is fitted in the bearing 11 so as to move reciprocally in the left and right lateral directions.

A hitch 17 attached to the rear end of the traveling body 1 is provided with a pair of equal length links 18, one above and one below, and one on the left and right.
The parallel link mechanism 22 for raising and lowering the seedling planting device is formed by pivoting the equal-length links 18, 19 at their base ends with pins 20, 21, and the ends of the equal-length links 18, 19 in the parallel link mechanism 22 are pivotally connected to pins 24, 25 at the same vertical intervals as the base-end pivot pins 20, 21 are connected to a connecting hitch 23 for the seedling planting device 6.
A hollow shaft 26 is integrally provided on the connecting hitch 23 so as to protrude rearward in a substantially parallel manner. The hollow shaft 26 is rotatably inserted into the front end of the transmission case 7 of the seedling planting device 6, so that the seedling planting device 6 can roll freely relative to the traveling vehicle body 1.
The tip of a bolt 53 which is provided so as to be freely inserted and removed from the transmission case 7 side is engaged with a circumferential groove 52 on the outer periphery, and within the hollow shaft 26, a drive shaft 28a which transmits power from the PTO shaft 29 via an extendable and bendable shaft 30 and a power transmission shaft 28b to various drive parts in the seedling planting device 6 are connected via a meshing clutch 54, thereby making it possible to freely attach and detach the seedling planting device 6 and the connecting hitch 23.

Reference numeral 32 denotes a support bracket for the preliminary seedling stand, and the support bracket 32 has a boss portion 32' at its lower end.
is rotatably fitted to the hollow shaft 26 between the connecting hitch 23 and the transmission case 7 via a ball bearing 33, so that the axis is the same as the rolling center axis of the seedling planting device 6 relative to the traveling vehicle body 1. It is configured to roll separately from the traveling vehicle body 1 and the seedling planting device 6 on the line.

Further, a pair of left and right rolling angle regulating members 55, 55 are protruded from the front end of the transmission case 7 of the seedling planting device 6, and the rolling angle regulating members 55 are sandwiched between the left and right side surface contact portions of the support bracket 32 with an appropriate gap. The supporting bracket 32 and the seedling planting device 6 are configured to be able to roll substantially integrally with respect to the traveling vehicle body 1.

A hydraulic cylinder 31 for raising and lowering the seedling planting device is provided between one of the links 18 in the parallel link mechanism 22 and the vehicle body frame 2.

At the upper end of the support bracket 32, a pair of upper and lower links 34, 35 of equal length and a pair of left and right links are pivoted by pins 36, 37 so as to extend in the direction of the traveling vehicle body 1, while both upper and lower links 34, 35 between the tips of the pivot pins 36, 3 to the support bracket 32.
7, pins 38 and 3 at the same intervals as the upper and lower intervals.
A parallel link mechanism 41 for raising and lowering the stand is connected by a connecting link 40 pivotally connected at 9, and a hydraulic cylinder 42 is installed between pins 39 and 37 in this parallel link mechanism 41. The parallel link mechanism 41 is configured to be moved up and down by the hydraulic cylinder 42 on the side of the traveling vehicle body.

Support shafts 43, 44 extending in the horizontal direction are mounted between the tips of the left and right pair of upper links 34, 34 and between the tips of both lower links 35, 35 in the parallel link mechanism 41 for raising and lowering the preliminary seedling stand. On both ends of the support shaft 43, an elevating and lowering ramp 46 for a preliminary seedling stand, which is disposed approximately horizontally on the upper part of the traveling vehicle body 1, is rotatably attached. A spare seedling stand 47 for placing spare seedling mats to be supplied on the stand 10 is placed so that it can freely reciprocate laterally parallel to the seedling stand 10 via trochanters 48 and 49. , and a hydraulic cylinder 50 for tilting the ramp 46 of the lift ramp 46 is mounted between the tip of the lift ramp 46 and the support shaft 44 of the lower links 35, 35.

The parallel link mechanism 22 for lifting and lowering the seedling planting device and the parallel link mechanism 41 for lifting and lowering the preliminary seedling stand have congruent quadrilateral shapes, and each link is parallel to each other, so that the lifting and lowering of the seedling planting device 6 is possible. At this time, the support shafts 43 and 44 at the tips of both the upper and lower links 34 and 35 in the parallel link mechanism 41 for raising and lowering the preliminary seedling stand are configured so as not to move up and down and not move up and down, and the transmission case 7 of the seedling planting device 6 When the preliminary seedling stand 47 is raised by the hydraulic cylinder 42, both upper links 34, 34 of the parallel link mechanism 41 come into contact with the upper end of the support arm 15, which is erected along the back surface of the seedling stand. Stopper body 51,5
1 is provided, and both stopper bodies 51, 51
It is U-shaped with the entrance wider than the back.

In this configuration, if the lift switching valve (not shown) is switched to the lift position, the lift hydraulic cylinder 3
Oil pressure is sent to the seedling planting device 1 to raise the seedling planting device 6, and at the desired raised position, the raising/lowering switching valve is set to the neutral position, thereby stopping the raising/lowering at the raised position. During rice planting work, while feeding seedlings on the seedling table 10,
A spare seedling pine is placed on the spare seedling stand 47, and then the seedling planting device 6 is lowered until its float 9 touches the field 11. In this state, the vehicle body 1 is driven forward and the seedling planting device 6 is lowered. Seedling stand 10 by driving
The seedling pine trees are divided into individual plants by the seedling planting mechanism 12, and the seedlings are successively planted in the field area 11.

During this seedling planting work, if the number of seedling pine leaves on the seedling stand 10 becomes less, the work of transferring the seedling pine in the preliminary seedling stand 47 onto the seedling stand 10, that is, the seedling splicing work is performed.

This work involves elongating the axial length of the hydraulic cylinder 42 to raise the front end side of the parallel link mechanism 41, and then using the hydraulic cylinder 50 for the lifting and tilting table 46 to move the preliminary seedling stand 47 on the upper surface to the back of the seedling stand 10. By bringing the end close to the front upper end of the seedling stand 10, the seedling pine on the preliminary seedling stand 47 can be moved by slightly sliding onto the seedling stand 10, and the seedlings can be transferred.

During such seedling work, even if the tiller surface A on which the wheels 4 of the traveling vehicle body run is tilted to the left or right or is uneven, the seedling planting device 6 can move the vehicle body 1
Since the seedling planting device 6 can be rolled freely, the seedling planting device 6 can be slid along the field surface 11, and in the case of multi-row planting, the left and right planting depth and planting posture can always be made uniform. At this time, according to the present invention, the support bracket 15 for the preliminary seedling stand 47
is configured to be able to roll freely with respect to both the seedling planting device 6 and the traveling vehicle body 1, and the seedling planting device 6
When the seedling platform 10 is tilted in the left-right direction due to rolling with respect to the traveling vehicle body 1, this seedling platform 1
Spare seedling stand 4 for replenishing seedlings for 0
7 is also tilted in the left-right direction like the seedling stand 10, so it is possible to reduce the formation of a step between the seedling stand 10 and the spare seedling stand 47 in the seedling planting device 6 due to rolling with respect to the traveling vehicle body 1. It is,
Furthermore, by configuring the spare seedling stand 47 to be able to move laterally with respect to its support bracket 15, it is possible to align the seedling stand 10 and the spare seedling stand 47 in plan view of the rice transplanter. This can be done extremely easily by lateral movement of 47.

The seedling planting device 6 is configured to be detachable from the connecting hitch 23, and a pair of left and right rolling angle regulating members 55, 55 are provided between the support bracket 32 and the seedling planting device 6 from one side toward the other. If it is made to protrude, the seedling planting device 6 alone can be attached to and detached from the traveling vehicle body 1 while the spare seedling stand 47 remains attached to the traveling vehicle body 1 side, so the operation can be made extremely simple.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the main parts of a riding rice transplanter, Fig. 2 is a plan view of Fig. 1,
FIG. 3 is a cross-sectional view taken from the side of FIG. 1, and FIG. 4 is an enlarged cross-sectional view of a connecting portion of the seedling planting device to the traveling vehicle body. 1... Running vehicle body, 2... Vehicle body frame, 4...
Rear wheel, 6... Seedling planting device, 7... Transmission case, 8...
...Planting case, 9...Float, 10...Seedling stand, 12...Planting mechanism, 15...Support arm, 2
2...Parallel link mechanism, 23...Connection hitch, 2
6...Hollow shaft, 32...Support bracket, 41...
...Parallel link mechanism, 46... Spare seedling lifting and lowering ramp, 47... Spare seedling stand.

Claims (1)

[Scope of utility model registration request] A seedling planting device comprising a left-right reciprocating seedling stand tilted so that the upper part of the seedling stand approaches the running car body is connected to a connecting hitch that protrudes vertically from the running car body so as to be freely rolling. In the rice transplanter, the connecting hitch includes a support bracket configured to bring a spare seedling stand disposed on the upper part of the traveling vehicle body closer to the seedling stand in the seedling transplanting device and to tilt it approximately parallel to the seedling stand, provided so as to be rollable with respect to both the seedling planting device and the traveling vehicle body;
Furthermore, the seedling splicing device for a rice transplanter is characterized in that the spare seedling stand is mounted so as to be movable in the left and right directions with respect to the support bracket.