JPH04252105A - Rolling device of planting working machine - Google Patents

Abstract

PURPOSE:To enable smooth practice of rolling balance to a mobile car body of a planting working machine forming an offset load. CONSTITUTION:The side of a link holder 4 and the side of a working machine frame 7 at the end of a lifting and lowering link 3 for connecting a working machine 6 forming an offset load to a mobile machine body 1 are equipped with rolling springs 26 and 26 having a relatively high elastic constant and correcting springs (27a) and (27b), capable of correcting the aforementioned offset load and having a relatively low elastic coefficient.

Description

[Detailed description of the invention]

0001

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

0002

[Prior Art] Conventionally, in rice transplanters, etc., in which a planting machine is connected to a traveling machine, the working machine moves up and down and rolls relative to the running machine, and a pair of rice transplanters are used to balance the rolling. A rolling spring is installed between the link holder side at the end of the lifting link and the work machine side, and the seedling stand on the work machine slides left and right to cut the mat seedlings, but the seedling stand is centered on the slide. It is known that a pair of springs for pulling back in the direction are stretched between the link holder and the end of the seedling stand.

0003

[Problem to be solved by the invention] However, for example, when seedlings in a strip of fixed width such as rushes are planted while being cut in accordance with the fixed amount of supply, it is difficult to use a seedling stand that slides from side to side. There is no need for a spring to pull back the sliding seedling stand because a line of seedlings is always supplied toward one planting area. On the other hand, with the above-mentioned planting machine, unlike mat seedlings, the feeding device is complicated, as it feeds strip seedlings while standing up.
It is difficult to install the transmission part for the feed drive on the back side of the seedling loading stand (seedling feeding device), and it is also difficult to install it on the front side (rear side) of the seedling feeding device because the width between the planting rows must be maintained. It's impossible.

[0004] For this reason, it has been proposed that the seedling feeding transmission device be installed on one side of the seedling feeding device, but since the seedling feeding device needs to be rolled depending on the field situation, the above-mentioned transmission section should be installed on one side. If installed in the
There is a problem that rolling cannot be performed smoothly. The present invention aims to provide a rolling device for maintaining rolling balance when a planting machine is loaded unevenly.

[0005]

[Means for Solving the Problems] The device of the present invention for solving the above-mentioned problems has a planting machine 6 connected to the rear of the traveling machine body 1 via a lifting link 3, which is capable of raising and lowering and rolling. A mechanism in which the planting work machine 6 is fixedly equipped with a seedling feeding device 18 for feeding seedlings toward the planting section 37, and an unbalanced load is formed on one side with respect to the rolling fulcrum 23, and the above-mentioned lifting/lowering A pair of left and right rolling springs 26 for maintaining rolling balance are installed between the link holder 4 side and the work machine frame 7 side at the end of the link 3, and between the link holder 4 side and the work machine frame 7 side. is characterized by the provision of a correction spring 27a that maintains the left and right load balance during rolling.

[0006]

[Function] When the planting machine 6 travels in the field, it rolls around the rolling fulcrum 23 along the field.
During rolling, the rolling springs 26 act to restore the original horizontal position. On the other hand, since the unbalanced load of the work equipment 6 acts in a direction that disrupts the balance of the rolling, the unbalanced load always acts in the opposite direction to the lifting direction to compensate for the unbalanced load. It functions to ensure smooth rolling action.

[0007]

[Example] The drawing shows a continuous supply of strip-shaped seedlings of rushes or rye, etc., which are connected in a band shape and whose bases are fixed with fixing tape and thread, and cut seedlings cut to a fixed width at the planting area are planted. An embodiment of the planting work machine is shown, and FIGS. 3 and 4 show the entire planting work machine and a side view of the work machine.

[0008] A driver's seat 2 is provided in the center of the traveling body 1 which runs on front and rear wheels 5a and 5b, and behind it a planting work machine 6 is connected via an elevating link 3 and a link holder 4 attached to the rear end. are connected so that they can be moved up and down and detached. The work machine frame 7 of the work machine 6 includes a pipe frame 8 installed horizontally at the front end, a shaft case 29 installed parallel and integrally behind the pipe frame 8, and a stay erected above both ends of the pipe frame 8. 11, a planter case 13 projecting rearward from the shaft case 9 at regular intervals, a drive case 14 provided approximately at the center of the pipe frame 8 and the shaft case 9, and the like.

A stocker 17 for accommodating the band-shaped seedlings 16 is attached to the upper end of the working machine frame 7, and the ends of the band-shaped seedlings 16 are sequentially fed out downward while being erected with the plant base facing downward. The seedling feeding device 18 is fixedly attached in a forward tilted position, and 19 is a seedling feeding frame consisting of a horizontally long rectangular frame, and 20 is a scissor-shaped cutter for cutting the strip-shaped seedlings 16 to a fixed width at the lower end of the seedling feeding device. be. On the left side of the seedling feeding device 18, a seedling feeding transmission section 21 having a chain wheel etc. built into the case is installed.
1 receives power from the drive case 14 through an input shaft 30. The weight balance of the working machine 6 is controlled by the seedling feeding transmission part 21 with respect to the rolling fulcrum 23 of the working machine which protrudes forward from below the approximate center of the working machine 6 and fits into the boss 22 on the link holder 4 side. This results in an unbalanced load structure that is biased to the left. 25 is a PTO shaft that transmits power into the drive case 14 from the traveling body side.

24 is a pipe stay horizontally installed above the link holder 4, and the pipe stay 24 and the pipe frame 8
A rolling spring 26 that maintains rolling balance is stretched between the rolling fulcrums 23 in a V-shape with the rolling fulcrum 23 as the center. Further, correction springs 27a and 27b are stretched between the pipe stay 24 and both ends of the upper part of the seedling feeding frame 19, respectively.

[0011] Below the work machine 6 are front and rear links 28a,
A plurality of floats 33 and 34 are connected by front and rear supports 31 and 32 via 28b so as to be able to rise and fall freely, and a beak 36 is provided at the rear end of the planter case 13 to hold the cut seedlings 16a.
A planter (planting section) 37 is attached to each of the above floats 33,
34, located on both sides of the rear end of the planter 3.
Reference numeral 7 receives cut seedlings 16a from the seedling feeding device 18 and plants them in the field at regular intervals as the machine moves.

A feeding belt 38 with an uneven surface is stretched above the rear side of the seedling feeding device 18 to feed the ends of each strip-shaped seedling 16 downward in a sideways state. The seedling feeding device 1 holds the belt-shaped seedlings 16 from above and below.
A pair of upright guide belts 39 are tensioned to the lower end of 8 and are erected one after another in the process of being sent out.Therefore, the upright guide belts 39 are twisted approximately 90 degrees so that they are horizontal at the upper end and erect at the lower end. It is wrapped.

FIGS. 1 and 2 show the mechanism of the rolling device, and in these figures, rolling springs 26 and 26 have relatively elastic coefficients that act to return the work implement 6 to its original position when the work implement 6 is rolled. It is a large spring (strong spring pressure). On the other hand, correction spring 2
7 is a spring 27a located on the side of the seedling feeding transmission unit 21 and correcting the unbalanced load of the working machine 6, which has a smaller elastic modulus (lower spring pressure) than the rolling springs 26 and 26 mentioned above.
Although it functions to correct unbalanced loads and maintain rolling balance, it is constructed so as to hardly interfere with the rolling balance force of the rolling springs 26, 26.

The other correction spring 27b has an elastic modulus smaller than that of the correction spring 27a, and is activated only when the right side of the work implement 6 is subjected to an unbalanced load for some reason or when the right side rolls excessively. In this sense, the correction spring 27b does not necessarily need to be provided.

[0015]

[Effects of the Invention] Since the present invention is constructed as described above, it is possible to maintain an appropriate rolling balance even when the working machine is subjected to an uneven load, and stable planting is possible without variation in planting depth on the left and right sides. be. Further, the correction spring does not interfere with the rolling balance by setting the elastic coefficient smaller than that of the rolling spring.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of a working machine frame showing essential parts of the present invention.

FIG. 2 is a partial front view of a work machine frame showing essential parts of the present invention.

FIG. 3 is an enlarged side view of the entire planting machine.

FIG. 4 is an overall side view of the traveling machine and the planting machine.

[Explanation of symbols]

1 Traveling machine body 3 Lifting link 4 Link holder 6 Planting work machine 7 Work machine frame 23 Rolling fulcrum 26 Rolling springs 27a, 27b Correction spring 37 Planting section

Claims (1)

[Claims] Claim 1: A mechanism in which a planting work machine (6) that can raise and lower and roll is connected to the rear of the traveling machine body (1) via a lift link (3), and the planting work machine (6) is connected to the planting section. A seedling feeding device (18) for feeding seedlings toward (37) is fixedly provided, and a rolling fulcrum (23) is provided on one side.
), a pair of left and right rolling springs (26 ), and also connect the link holder (4) side and the work machine frame (7).
) side is provided with a correction spring (27a) for maintaining left and right load balance during rolling.