JPH0414966Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field> The present invention relates to a seeding machine.

<Prior art> A seeding machine is equipped with a furrowing device, a sowing section, and a rear suppression wheel in the front and back direction, and the trenching device cuts a trench in a field, drops seeds from the sowing section into the trench, and then covers the field with soil. We are trying to suppress the situation using suppression wheels. This type of seeding machine includes one that is attached to the rear of a rotary tiller, and one that is attached to a tractor without using a rotary tiller.

<Problems that the invention attempts to solve> However, in any of these forms, conventionally,
There was no pre-treatment on the front side of the furrower, and the furrower was used to cut furrows directly onto the rotary tilled field, which had the disadvantage that the seeding depth was inconsistent.
That is, if there were differences in the size of the soil clods left behind by tillage, the depth of the trench would vary depending on the soil clods, and would become shallower where the soil clods were large, so the depth would not be constant. this is,
It is also affected by conditions such as field levelness and soil quality.

<Means for Solving the Problems> In the present invention, as a specific means for solving the problems of the conventional art, a plurality of hoppers 17 each having a feeding device 16 are installed laterally in the machine frames 6 and 15. A sowing chute 21 is provided to guide the seeds fed out from each hopper 17 into the groove formed by the furrower 20, and a soil covering device 22 is provided to cover the seeds after sowing with soil.
and a rear pressure wheel 23 for suppressing soil-covering remains are arranged in the front-rear direction, and below each hopper 17, each furrower 20, seeding chute 21, earth-covering device 22, and rear pressure wheel 23 are supported. A movable frame 18 is provided at the front end of each movable frame 18, and a ground leveling pressure wheel 1 is provided at the front end of each movable frame 18 for leveling the trench position in front of the trencher 20.
9 are provided respectively, and the front part of each movable frame 18 is connected to the machine frame 6,
The movable frame 18 is urged downward between the machine frames 6, 15 and each movable frame 18 at a position that is pivotally connected to the 15 side and deviated toward the rear suppression wheel 23 side from the pivot joint part. A spring 30 is provided for each.

<Operation> During seeding work, the ground leveling wheel 19 compresses and level the field prior to the trencher 20. Then, grooves are created on the ground leveling marks using a trencher 20, and the sowing section 2
1 to sow the seeds, and the rear compression wheel 23 to cover and compact the soil.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIG. 1 and FIG. The rotary tiller 1 is removably attached to the rear of a tractor via a three-point link mechanism. Reference numeral 6 denotes a horizontal tool bar, which is attached to the rear of the gauge support frame 4 via a fixture 7, parallel links 8, and the like. The fixture 7 includes a mounting arm 9 that is detachably attached to the gauge support frame 4, and a mounting arm 9 that is detachably attached to the gauge support frame 4.
The vertical frame 10 is pivotally attached to the vertical frame 10, and the angle of the vertical frame 10 can be adjusted by a handle 11. The parallel link 8 is the mounting bracket 1 of the vertical frame 10 and the tool bar 6.
The tool bar 6 is provided between the handle 1 and the handle 1, and the tool bar 6 can be moved vertically in parallel with the handle 1.
It can be adjusted by 3.

Numeral 14 is a seeding machine, and a plurality of seeding machines, for example four, are provided on the tool bar 6 at equal intervals in the horizontal direction. Each seeding machine 14 has a fixed frame 15 and a feeding device 1.
6, hopper 17, movable frame 18, ground leveling wheel 1
9, a trencher 20, a seeding chute 21, a soil covering disk (earth covering device) 22, a rear suppression wheel 23, and the like.
A fixed frame 15 is attached to the tool bar 6 in a rearwardly projecting manner, and a feeding device 16 and a hopper 17 are attached to the fixed frame 15. Feeding device 16
has a feed roll 24, and the feed roll 2
4 includes one drive shaft 25 for each seeding machine 14.
is inserted. A ground-contact drive wheel 26 is disposed between the seeding machines 14 in the center, and each delivery roll 24 is driven from the drive wheel 26 via a winding transmission mechanism drive shaft 25 in a transmission case 27. Movable frame 1
8 is disposed below the fixed frame 15 in the front-rear direction, and is connected to the fixed frame 15 through a link 28 and a mounting part 29 on the front side, and a rod 30 is connected on the rear bracket side. 30 is inserted into a receiver 31 of the fixed frame 15. The front part of the movable frame 18 is connected to a mounting bracket 29 and a link 28.
The rear side is biased downward by a tension spring 32 suspended between the rod 30 and a coil spring 33 fitted around the rod 30, respectively. The movable frame 18 is provided with a seeding chute 21 at the center of the front and back, a ground leveling pressure wheel 19 at the front end, and a rear pressure wheel 23 at the rear end. The seeding chute 21 constitutes a seeding section, and a furrower 20 and a soil covering disk 22 are attached to it. The groove making device 20 is composed of a rotatable groove making disk 34 and a shoe 35 that is in sliding contact with the groove making disk 34. The soil covering disk 22 is attached to the seeding chute 21 via an attachment arm 36 so as to be able to move up and down, and is urged downward by a lowering mechanism 37 provided between the attachment arm 36 and the movable frame 18. The land leveling pressure wheel 19 is arranged in front of the trencher 20,
It is rotatably supported by a bracket 38 at the front end of the movable frame 18 by a horizontal shaft 39. The rear pressing wheel 23 is used to press the earth after it has been covered, and is rotatably supported by a bracket 40 at the rear end of the movable frame 18 via a horizontal shaft 41. 42 is a scraper.

Next, the operation of the above configuration will be explained. The rotary tiller 1, the seeding machine 14, etc. are mounted at the rear of the tractor, and are adapted to carry out seeding work at the same time as rotary tilling. That is, the field is tilled by the rotary tiller 2, and the tillage marks are leveled by the rotary cover 3. Subsequently, the ground leveling pressure wheel 19 provided on the movable frame 18 compresses the front of the trencher 20 to level the ground, and the land leveling mark is fixed in a predetermined position by the trencher disk 34 and shoe 35 of the trencher 20. Form a deep groove. In this case, the part of the groove-making device 20 that protrudes downward from the pressure wheel 19 becomes the groove-making depth, and the pressure wheel 1
Since the trench is created on the ground leveled in step 9, the depth of the trench is constant. In particular, even if there is a poorly crushed soil lump, it is forcibly crushed by the crushing wheel 19, so it is possible to perform work with a stable trench depth. On the other hand, the ground driving wheel 2
As the feeding device 16 sequentially feeds out the seeds in the hopper 17 by the power from the seeding chute 21, the seeds fall into the groove through the seeding chute 21 and are sown. After sowing, the soil is covered with the soil covering disk 22,
We will suppress it with 23 suppression wheels.

The movable frame 18 has compression wheels 19 and 23 at the front and rear,
Since it is pulled by the link 28 from the bracket 29 side of the fixed frame 15 and urged downward by the tension spring 32 and coil spring 33, the suppression wheels 19 and 23 follow the undulations of the field. Therefore, as shown in FIG. 3, even if the field has ups and downs, the work can be done without significantly changing the relative relationship of the trencher 20 to the field.

<Effects of the invention> According to the invention, a pressure wheel for leveling the ground is provided in front of the trencher, and the trench is created using the trencher on the ground leveled with this wheel, so that trenches of a constant depth can be created. This allows for reliable sowing. Furthermore, since the trench is created on the ground leveling site, there is no need to increase the size of the trench creator, and the trench can be made smaller. Moreover, below each of the plurality of horizontal hoppers attached to the machine frame, a movable frame is provided to support each furrower, seeding chute, soil coverr, and rear suppression wheel, and at the front end of each movable frame, A ground leveling pressure wheel for leveling the trench position is provided in front of the trench cutting machine, the front part of each movable frame is pivotally connected to the machine frame side, and the pivot connection part is biased toward the rear pressure wheel side. Since springs are installed between the machine frame and each movable frame to bias the movable frame downward in the fixed position, each row can be movable if there is a height difference in the horizontal direction of the field. The frame moves up and down, allowing the soil leveling wheel, trench cutter, seeding chute, earth covering device, and rear taming wheel to work in the proper condition at all times.
In addition, each movable frame that is pivotally connected to the machine frame is biased downward by a spring provided between the machine frame and each movable frame at a position offset toward the rear suppression wheel from the pivot joint. Therefore, the rear pressure wheel can be sufficiently pressed downward to reliably suppress the soil-covering trace, and each soil leveling pressure wheel can also be pressed downward at the same time to level the ground. That is, with the springs provided between the machine frame and each movable frame, it is possible to secure pressure on the rear plowing wheel side, which requires sufficient compaction after soil covering, and at the same time to ensure pressure on the ground leveling plowing wheel side.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a cutaway plan view of the main part, and FIG. 3 is an explanatory diagram of the operation. 14... Seeding machine, 15... Fixed frame, 18... Movable frame, 19... Land leveling wheel, 20... Grooving device,
21...Sowing chute, 23...Rear suppression wheel.

Claims (1)

[Scope of utility model registration request] A plurality of hoppers 17 each having a feeding device 16 are provided in the machine frame 6, 15 in the lateral direction, and a groove forming device 20 for forming a groove below each hopper 17;
A sowing chute 21 that guides the seeds fed from the hopper 17 into the groove formed by the furrower 20, a soil covering device 22 that covers the seeds after sowing, and a rear pressure wheel 23 that suppresses the soil covering remains are arranged in the front and rear direction. In the arranged sowing machine, a movable frame 18 is provided below each hopper 17 to support each trencher 20, sowing chute 21, soil covering device 22, and rear suppression wheel 23, and the front end of each movable frame 18 is , a ground leveling pressure wheel 19 for leveling the trench position is provided in front of the trencher 20, and the front part of each movable frame 18 is pivotally connected to the machine frames 6 and 15 side, and from the pivot connection part. A seeding machine characterized in that a spring 30 is provided between the machine frames 6, 15 and each movable frame 18 at a position deviated toward the rear suppression wheel 23 side to bias the movable frame 18 downward. .