JPS6030606A - Seeding depth controler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seeding depth adjusting device in a seeding device such as a heated rice water direct sowing device, and particularly to a device that adjusts the depth of a furrower to the topsoil.

In this type of seeding device, the seeding depth is set to allow for subsequent germination and
It is extremely important to maintain a constant sowing depth, as it has a significant effect on growth and thus yield. Yu and 1, flooding. GCJ5: Due to the hardness and softness of the topsoil and the instability of single machine movement, the seeding depth tends to be uneven, which is a problem with direct sowing cultivation.

The present invention was conceived in view of the above circumstances, and provides a seeding depth adjustment device that maintains the depth of the furrower forming the seeding furrow relative to the topsoil constant, thereby making it possible to keep the seeding depth constant. This is what we are trying to provide.

In order to achieve this objective, the first aspect of the present invention is to provide a float that senses ground pressure fluctuations and moves the aircraft up and down by 11J#, and adjusts the ground pressure sensitivity of this float by detecting the hardness and softness of the field topsoil. The method is characterized by having a structure in which a hard and soft sensor is attached to the anchor, and a groove cutter is movable up and down, and the depth of the groove cutter is adjusted in conjunction with the detection of hardness and softness of topsoil by the hard and soft sensor. be.

Further, the second aspect of the present invention is a groove cutter that can move up and down,
It is characterized by being equipped with a depth detection mechanism for detecting the depth of the groove cutter relative to the topsoil, and configured to maintain the depth of the groove cutter constant based on the detected value by the depth detection mechanism. It is.

Furthermore, the third aspect of the present invention includes a float that senses ground pressure fluctuations and controls the vertical movement of the aircraft, a sensitivity adjustment mechanism that adjusts the ground pressure sensitivity of this float depending on the hardness and softness of the field topsoil, and a float that can be moved up and down. The present invention is characterized in that it is equipped with a groove cutter, and is configured so that the depth of the groove cutter is adjusted in conjunction with the sensitivity adjustment of the float by a sensitivity adjustment mechanism.

The invention will now be described with reference to the illustrated embodiments.

In accordance with FIGS. 1 to 3, in the first aspect of the present invention, reference numeral 1 denotes a wheel 4 having a pair of left and right front wheels 2 and a rear wheel 3.
This traveling vehicle body 1 is in the form of a wheel, and an engine 4 is mounted on the front part of the traveling vehicle body 1, and a seeding device 1 is attached to the rear part via an elevating link 6 that moves up and down by the expansion and contraction operation of a hydraulic cylinder 5.

The seeding device 7 also serves as a transmission case, and receives power from the traveling vehicle body 1 side through a belt transmission system 9 to a vehicle body frame 8 that is connected to the lifting link 6 in a rolling and pitching manner. has been established. Transmission cases 12, 12 are connected and supported at the ends of a connecting frame 11 extending from the transmission case 10 to both left and right sides.Seed feeding parts 13.13 are fixedly installed on each left and right side of the two transmission cases 10.12. This seed feeding section 13
A seed hopper 14 is attached to the upper part of the container, and a seed guide tube 15 is attached to the lower part thereof. Power is transmitted from the main body frame 8 to the transmission case 10 by a belt transmission system 16, and the rotating shaft 1r of the belt transmission system 16 on the transmission case 10 side extends long from side to side, and transmits power to the transmission case 12.12. ing. Further, power is transmitted from the transmission case 10.12 to the seed feeding section 12.

A support frame 18 extending in the front-rear direction is provided at the lower part of the transmission case 10.12, and the rear portions of a center float 19 and side floats 20.20 are pivotally supported by the support frame 18 via brackets 21.

The front part of the center float 19 is connected to a support arm 22 protruding forward from the main body frame 8 by a dogleg-shaped link body, and a hydraulic valve 23 is provided on the side of the link body. The oil passage is switched by the vertical movement caused by ground pressure fluctuation, and the hydraulic cylinder 5 is expanded and contracted to move the sowing #& place 7 up and down via the elevating link 6. Further, a sensitivity adjustment arm 24 whose lower end is in sliding contact with the upper surface of the center float 19 is pivotally supported at the tip of the support arm 22 . At the tip of the center float 19, the base is elastically supported via a support arm 25, and a topsoil hardness/softness sensor 26 is provided which contacts topsoil and automatically detects hardness or softness based on its resistance. The upper end of this sensor 26 is connected to the upper end of the sensitivity adjustment arm 24 via a spring 27, and is also linked to a hydraulic valve 29 located below the transmission case 12 via an operating wire 28. A hydraulic cylinder 30 that is telescopically operated by the hydraulic valve 29 is attached to the support frame 18, and one end of an operating arm 31 is attached to the tip of the piston.

The other end of the operating arm 31 is connected to a rotation shaft 32 to which a groove creator 33 is attached. The tip of the seed guide tube 15 is exposed inside the furrower 33.

When the seeding device with such a configuration is introduced into a flooded paddy field to perform seeding work, when the hydraulic valve 23 is moved to the left from the neutral (fixed) position shown in FIG. The seeding device 7 is lowered by its own weight via the elevating link 6, the center float 19 and side floats 20 contact the field surface, and the hydraulic valve 23 returns to the neutral position. In this state, by driving the sowing device 1 while the traveling main body 1 travels, the rice seeds are fed out from the seed feeder 13 into the seeding groove formed by the groove cutting device 33 in the rice field leveled by the floats 19 and 20. The seeds fall through the seed guide tube 15 and are covered with soil by soil plates provided on both sides of the rear end of each float 19.2 ohm.

During this seeding work, the front part of the center float 19 moves up and down due to changes in the ground pressure with the field surface, and this up and down movement switches the hydraulic pulp 23, causing the hydraulic cylinder 5 to expand and contract, and via the lifting link 6 to the seeding device. 7 is moved up and down, the ground pressure of the float 19 is kept almost constant, and the seeding depth is kept almost constant.

At the same time, the hardness or softness of the topsoil is detected by the topsoil hardness/softness sensor 26, and its rotation activates the sensitivity adjustment arm 24 via the spring 27 to move the float 19 up and down, and also controls the hydraulic pulp 29 via the operating wire 1728. The hydraulic cylinder 30 is expanded and contracted to rotate the rotating wheel 32 via the operating arm 31, and the groove making depth of the groove making device 33 is 1.
One verse is said. The depth of this trench is set to 11 so that it becomes deeper when the topsoil is hard and shallow when the topsoil is soft.

Next, in the second embodiment of the present invention shown in FIGS. 4 and 5, the depth of the groove maker 33 is
That is, the groove depth detection floats 34 and 34 for detecting the height of the topsoil on the sides of the groove cutter 33 are provided on the side floats 20 (the center float 19 may also be used) via the rotation shaft 35. The hydraulic pulp 29 is connected to the hydraulic pulp 29 by an operating wire 36.

In this embodiment, the changes in the groove maker 33 caused by the vertical movement of the side floats 2o are caused by the changes in the grooves 34, 34.
Based on the change, the hydraulic pulp 29 is switched via the operating wire 36, the hydraulic cylinder 30 is expanded and contracted, and the depth of the trencher 33 is adjusted via the operating arm 31. The seeding depth is kept constant.

In the third embodiment of the present invention shown in FIG. 6 and FIG. A fertilizer tank 38 is provided. The lower end of the fertilizing pipe 39 extended from the feeding part of the fertilizer tank 3B is connected to the furrower 3 supported by the rotating shaft 4o.
3a. A groove depth adjustment lever 41 is installed on the rotation shaft 40, and a groove depth detection float 34a is provided on the side of the groove creator 33a. One end is connected, and the other end is a groove depth display device 43 provided at the front of the traveling vehicle body 1.
is connected to.

In this third embodiment, at the front position of the seedlings to be planted by the rice transplanting device 37, a fertilizing groove is created on the side of the row by a groove creator 33a, and a fertilizing pipe 39 is inserted into this groove. Fertilized. This fertilization depth is determined by the furrow depth adjustment lever 41.
However, through this adjustment, the actual depth at which the trench is created and fertilized by the trench creator 33a is detected by the trench creation depth detection float 34a, and the detected value is transmitted to the operating wire 42.
Since the information is displayed on the display device 43 via the display device 43, the operator can know the depth of fertilization while operating the traveling vehicle body 1, and can appropriately adjust the depth of fertilization. Note that this embodiment can be similarly implemented in a seeding device.

In a fourth embodiment of the present invention shown in FIG. 8 and W2O, a support arm 44 that supports the front part of the center float 19 is pivotally supported on the main body frame 8 via a pin 45.
This support arm 44 is connected to a sensitivity adjustment lever 41 provided on the traveling body 1 via an operating wire 4G.
The vertical movement sensitivity of the center float 19 is adjusted by the operation 7. Further, six groove makers 33 are connected to the other end of the support arm 44 via link rods 48, so that the depth of the groove makers 33 can be adjusted at the same time as one interlock of the float 19. There is. A soil covering leveling plate 49 is provided behind the trencher 33.

In this fourth embodiment, the pressing force of the center float 19 against the topsoil is adjusted by the sensitivity adjustment lever 41 according to the hardness or softness of the field topsoil. For example, if the topsoil is hard, the pressing force is increased and The motion sensitivity is made insensitive, and if the topsoil is soft, the pressing force is weakened to make the vertical motion sensitivity sensitive.

At the same time as this sensitivity adjustment, the depth of the trencher 33 is adjusted via the link rod 48 so that it is deep when the topsoil is hard and shallow when the topsoil is soft. Therefore, the seeding depth is appropriately adjusted depending on the hardness or softness of the topsoil, and the seeds are sown to a constant depth and then covered with the soil covering leveling plate 49 and leveled.

As explained above, according to the seeding depth adjusting device of the present invention, first of all, in the first invention, the center float 19
The depth of the trencher 23 is adjusted according to the detected value of the hard/soft sensor (topsoil hard/soft sensor 26 in the embodiment), which adjusts the ground pressure sensitivity of the topsoil depending on the hardness or softness of the topsoil. The grooves of the seeding groove are maintained at a constant depth, allowing for sowing at a constant depth, and subsequent germination (sprouting) and growth can be improved.

Further, in the second invention, the depth of the groove created by the groove creator 33 is detected by a detection mechanism (detection float 34 in the embodiment), and the depth of the groove creator is held constant based on the detected value. Seeds are always sown at a constant depth from the topsoil to ensure good germination, sprouting, and growth, resulting in increased yield.

Furthermore, in the third invention, the center float 19
Since the depth of the trencher 33 is adjusted in conjunction with the adjustment operation of the sensitivity adjustment mechanism (sensitivity adjustment lever 41 in the embodiment) that adjusts the ground pressure sensitivity of the float, fluctuations in the ground pressure of the float can be adjusted depending on the hardness and softness of the topsoil. At the same time, the seeding groove is also formed to an appropriate depth by the trencher, so that seeding can be performed at a constant depth.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing the first embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a hydraulic circuit diagram thereof, and Fig. 4 is a side view showing the second embodiment of the present invention. Figure 5 is the same plan view, Figure 6 is the same plan view.
The drawings are a side view showing a third embodiment of the invention, FIG. 7 is a plan view thereof, FIG. 8 is a side view showing a fourth embodiment of the invention, and FIG. 9 is a plan view thereof. 1... Running vehicle body, 2... Front wheel, 3... Rear wheel, 4...
...Engine, 5, 30τ...Hydraulic cylinder, 6...
・Elevating link, 7... Seeding device, 8... Main frame, 9.16... Belt transmission system, 10.12... Transmission case, 11... Connection frame, 13... Seed delivery Part, 14... Seed hopper, 15... Seed guide tube, 11... Rotating shaft, 18... Support frame, 19...
...Center float, 20...Side float, 2
DESCRIPTION OF SYMBOLS 1... Placket, 22.25.44... Support arm, 23.29... Hydraulic pulp, 24... Sensitivity adjustment arm, 26... Topsoil hard/soft sensor, 27... Spring,
28.3G, 42.46...operation wire, 31...
- Operating arm, 32.35.40... Rotation axis, 33.
33a... Grooving device, 34.34a... Grooving depth detection float, 37... Rice transplanting device, 38... Fertilizer tank, 39... Fertilizer pipe, 41... Grooving depth adjustment lever,
43... Groove depth display device, 45... Bin, 47...
...Sensitivity adjustment lever, 48...Link Rondo, 49.
...Soil covering level plate. Patent Applicant Iseki Agricultural Machinery Co., Ltd. Representative Patent Attorney Shin Kobashi Susumu Udo Mura Procedural Amendment (Method) 1. Display of the case Patent Application No. 139859 of 1982 2 Name of the invention Seeding depth adjustment device 3 Person making the amendment Relationship to the case Patent Applicant 700-4 Umamotocho, Matsuyama City, Ehime Prefecture, Agent 6, All drawings to be amended (7), engraving of drawings to be amended (no changes in content)

Claims (4)

[Claims] (1) Controls the vertical movement of the aircraft by sensing ground pressure fluctuations
It is equipped with a float that adjusts the ground pressure sensitivity of the float by 1 ljl by detecting the hardness and softness of the topsoil in the field, and a groove making device that can move up and down. A seeding depth adjusting device characterized by being configured to adjust the depth of a container. (2) Equipped with a groove cutter that can move up and down and a depth detection mechanism that detects the depth of the groove cutter relative to the topsoil, and maintains the depth of the groove cutter constant based on the detected value by the depth detection mechanism. A seeding depth 11-section device characterized by being configured as follows. (3) The seeding depth adjusting device according to claim 2, wherein the depth of the trench cutter determined by the depth detection mechanism is displayed by a display mechanism. (4) Equipped with a float that senses ground pressure fluctuations and controls the vertical movement of the aircraft, a sensitivity adjustment mechanism that adjusts the ground pressure sensitivity of this float depending on the hardness and softness of the field topsoil, and a groove cutter that can move up and down, A seeding depth adjusting device characterized by being configured to adjust the depth of a furrower in conjunction with sensitivity adjustment of a float by a sensitivity adjustment mechanism.