JPS5921565B2 - Seeding device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of a seeding device equipped with a seeding machine at the rear of a rotary, improving the weight distribution between the front and rear wheels of a tractor when attached to a tractor, and eliminating the need for special equipment for various types of rotary. The purpose is to make it more versatile and thereby contribute to reducing production costs.

In the past, various so-called so-called tilling and simultaneous sowing type seeding devices equipped with a seeding machine at the rear of a rotary have been proposed and put into practical use, but in general, the rotary is equipped with a rubber base on the rear cover that constitutes the rotary cover. Therefore, in order to improve the sowing accuracy, it was necessary to remove the rubber sag and separately attach a leveling plate to the rear cover.

In addition, the leveling plate is fixed to the rear edge of the rear cover and is swingable in the front and back directions using the pivot of the rear cover relative to the front cover as a fulcrum, so the length from this pivot to the tip of the leveling plate is a dog. The grounding point of the leveling plate becomes thicker (changes) in the front and back as the rotary plowing depth changes.

In other words, at the maximum plowing depth, the grounding point is the thickest at the rear (
To prevent the seeding machine from interfering with the transition,
It was necessary to install the seeding machine far enough to the rear.

Therefore, this type of tractor has the disadvantage that the weight balance between the front and rear wheels of the tractor is lost.

The present invention is aimed at solving such conventional problems, and its first feature is that in a rotary machine equipped with a seeding machine at the rear, the seeding machine protrudes rearward from the rotary body. A support rod is provided that can be adjusted up and down via a plowing depth adjustment mechanism, and a pair of left and right gauge members is provided on this support rod, and the seeding machine is raised and lowered to the support rod via a parallel link mechanism between the pair of gauge members. The second feature is that the leveling plate located between the rotary and the seeding machine is freely attached to the rotary and is pivoted to the support rod so as to be swingable around the horizontal axis. Upper regulating plates for regulating the movement of soil in the lateral direction are provided at both left and right ends so as to protrude forward, and the upper regulating plates are configured to be movable and fixed in the direction of lateral force.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment. In the figure, 1 is a tractor, 2 is a rotary attached to the rear of the tractor 1 via a three-point link mechanism 3, and is movable up and down by a lift arm 4. be done.

The rotary 2 has a rotary machine body 5, a plurality of tilling claws 6 attached to a claw shaft, and a rotary cover 7 that covers this.
The power transmitted through the tilling claws 6...
It is configured to drive...

Reference numeral 10 denotes a support rod which is pivotally supported on the upper part of the rotary body 5 so as to be able to swing vertically, and is configured in the shape of a planar rectangular frame, and a pair of left and right suspension rods 11 and 12 are attached to the rear end.

Reference numeral 13 denotes a tool bar installed laterally at the lower ends of the hanging rods 12, 12, and this includes mounting brackets 14 at predetermined intervals in the lateral direction.
The seeding machine mounting base 15... is fixed to each mounting base 15 through the parallel four-speed link mechanism 16. Seeding machine 17...
...is supported.

Each seeding machine 17... has a main frame 18, a seed tank 19, a feed roll 20 that feeds out the seeds in this tank 19 in fixed quantities, a feed roll drive wheel 21 that drives this, and a groove cutter. It includes a disk 22, a groove cutting shoe 23 that comes into contact with the side surface of the disk 22, a soil covering plate 24, and a pressing roller 26 that is pivotally supported on a swinging frame 25 that is pivotally attached to the rear end of the main frame 18. .

Reference numeral 27 denotes a gauge wheel, which is pivotally supported by stays 28 and 28 provided at both ends of the tool bar 13, respectively.

Reference numeral 29 denotes a bracket, which is fixed to both ends of the tool bar 13 via mounting brackets 30, 30.
A ground leveling plate 32 is pivotally attached to the front end portions of 9 and 29 by pivot pins 31 and 31 so as to be swingable in the front and rear directions.

The ground leveling plate 32 is the tiller of the rotary 2 and the seeding machine 17...
It has a sufficient length in the lateral direction corresponding to..., and its lower end is curved toward the rear.

Soil regulating plates 33, 33 are provided at both ends of the ground leveling plate 320 and protrude forward, and the soil regulating plates 33, 33 have horizontal long holes 34 formed therein, bolts 35, and nuts. 36, so that the lateral position can be freely changed and fixed.

Note that it is preferable that at least the lower edges of the soil regulating plates 33, 33 be curved in order to regulate the movement of soil in the lateral direction.

A leveling plate suppression mechanism 3 corresponds to the brackets 29, 29.
7° 37 is provided, and each of these mechanisms includes a rod 39 whose lower end is pivoted to a metal fitting 38 on the back of the leveling plate 32, and this rod 3.
The bracket 29 is loosely fitted into the bracket 29 so as to be relatively movable in the axial direction.
a guide 41 pivotably supported around a horizontal axis 40;
a spring 42 fitted around the rod 39 so as to press the leveling plate 32 downward between the guide 41;
A retaining pin 43 is provided at the upper end of the rod 41.

44 is a gauge wheel 2 for the tilling claw 6...
This is a plowing depth adjustment mechanism that adjusts the plowing depth by adjusting the 7°270 vertical position.

In the above configuration, when the tractor 1 is moved forward while rotating the PTO shaft 8, the tilling claws 6 rotate in response to the power from the PTO shaft 8, and till the field A to a predetermined tilling depth. , followed by the leveling plate 32 leveling the ground evenly (.

At this time, some of the topsoil on the surface of the field A tries to escape to both sides of the leveling plate 320, but is regulated by the existence of the soil regulating plates 33 and 330, and therefore, the part of the topsoil on the surface of the field A that corresponds to both ends of the leveling plate 32 is regulated by the existence of the soil regulating plates 33 and 330. There are no ridge-like embankments, and the land can be leveled evenly.

Also, depending on the plowing depth of the rotary 2, the leveling plate 32 swings around the pivot pins 31, 31, but this is a bracket).
It is supported by the tool bar 13 via 29, 29,
Furthermore, since the length from the fulcrum to the tip is small, the amount of movement of the grounding point a in the front-back direction as the plowing depth changes is extremely small.

After leveling the field A, the groove cutting discs 22 and groove cutting shoes 23 of each seeding machine 17 create grooves, and the feed roll 20 feeds seeds from the seed tank 19 into the grooves in fixed quantities for sowing. Go.

At this time, the feed roll 20 is driven by the drive wheels 21 in synchronization with the tractor speed.

After the seeds are sown, the seeds are covered with soil using the soil-covering board 24, and the pressure rollers 26 press down on the soil, thereby carrying out a series of tilling and sowing operations.

As described in detail in the embodiments above, in the present invention, the leveling plate located between the rotary and the seeding machine is pivoted to the support rod protruding rearward from the rotary body so as to be swingable around the horizontal axis 6. This eliminates the need to attach a separate auxiliary cover or leveling plate to the rear cover that makes up the rotary cover every time seeds are sown. You can start sowing immediately.

Moreover, the support rod is vertically adjustable via a plowing depth adjustment mechanism, and is equipped with a pair of left and right gauge members, and the support rod is provided with a leveling plate, so the relative relationship between the gauge member and the leveling plate is It is always approximately constant regardless of tillage depth adjustment, and therefore, there is extremely little variation in the position of the grounding point of the leveling plate due to changes in tillage depth.As a result, the position of the seeding machine is generally rotary compared to conventional ones. Therefore, the weight balance between the front and rear wheels of the tractor is stable, and safe work is possible.

In addition, the sowing machine is attached to the support rod via a parallel link mechanism so that it can be raised and lowered freely, so even if the plowing depth is adjusted, the attachment point of the seeder does not change significantly up and down, and the sowing machine is always in the field. This means that the seeding machine moves in parallel following the surface of the seedling, and the conditions such as the seeding posture are constant, making it possible to perform reliable seeding work.

Since the seeding machine is located between the left and right pair of gauge parts and the material, the overall length in the front-back direction can be shortened and the weight balance can be improved.

Furthermore, on both the left and right ends of the leveling plate, there are upper regulating plates that protrude forward to restrict the movement of soil outward in the lateral direction, so that when leveling the ground, part of the field topsoil is placed outside both ends of the leveling plate. There is no longer a situation where the enemy moves and becomes hostile, and the ground can be leveled evenly.

Further, since the upper regulating plate is adjustable in the lateral direction, it can be arbitrarily adjusted according to the tilling width of various rotary machines or the number of seeding machines installed, and is excellent in versatility in this respect as well.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing one embodiment of the present invention, and FIG.
The figure is an enlarged front view of the main part of the ground leveling plate. 1...Tractor, 2...Rotary, 3
... Three-point linkage mechanism, 10 ... Support rod, 13 ... Tool bar, 17 ... Seeding machine, 29 ... Bracket, 31 ... Pivotal pin, 32 ... Leveling plate, 33 ... Upper regulation plate, 37 ... Leveling plate pressing mechanism, 44 ...
... tillage depth adjustment mechanism.

Claims (1)

[Claims] 1. In a rotary machine equipped with a ground-type seeding machine at the rear, a support rod protruding rearward from the rotary machine body is provided so as to be vertically adjustable via a plowing depth adjustment mechanism, and this support rod has left and right A pair of gauge members is provided, and the seeding machine is pulled and attached to a support rod between the pair of gauge members via a parallel link mechanism so that it can be raised and lowered, and a leveling plate located between the rotary and the seeding machine is attached to the support rod. A seeding device characterized by being pivotably supported around a horizontal axis. 2 In a rotary equipped with a ground-type seeding machine at the rear, a support rod protruding rearward from the rotary body is provided so as to be vertically adjustable via a plowing depth adjustment mechanism, and a pair of left and right gauge members is provided on this support rod. At the same time, between the pair of gauge members, the seeding machine is pulled and attached to a support rod via a parallel link mechanism so that it can be raised and lowered, and the ground leveling plate located between the rotary and the seeding machine is swung around the horizontal axis using the support rod. The upper regulating plate is mounted on both the left and right ends of the ground leveling plate so as to protrude forward to restrict the movement of soil outward in the lateral direction, and the upper regulating plate can be changed and fixed in the horizontal direction. A seeding device characterized by being freely configured.