JPH07213124A - Seedling planting unit - Google Patents

Abstract

PURPOSE:To avoid the twining of impurities on a rotating shaft part provided with a planting device on its shaft. CONSTITUTION:A seedling planting unit is constructed by forming oil seals 41 and 42 at an outer shaft side of a double shaft structure composed of a drive supporting shaft 30 or a fixed shaft 31, and at an outer end side of a bearing of a planting rotating case 25 side and at an inner side of a bearing of a planting device case 32 side respectively, and by installing a boss part covering body 43 formed in one piece at the planting device case 32 side and surrounding the outside of outer end side of a boss part 25a of the oil seal support part of the planting rotating case 25 side, between an outer end side of a bearing of the planting rotating case 25 and an inner end side of a bearing of the planting device case 32.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 61-282008, the drive is provided in a planted rotary case mounted on a drive shaft that is driven so as to project from the planted transmission case side. A non-circular or eccentric sun gear fixed to the metal fixed to the planted transmission case through the outer periphery of the shaft is provided, and the number of teeth of the sun gear meshed with the sun gear and rotated. And a first planetary gear having the same number of teeth as that of the first planetary gear, and a second planetary gear having the same number of teeth as the number of teeth of the first planetary gear meshed with the first planetary gear and rotated, and integrated with the second planetary gear. A transmission shaft rotated by means of a double shaft structure concentric with the transmission support shaft, the base side of which is fixed to the planted rotation case. A fixed shaft is provided, and a planting tool case provided with a seedling planting claw is attached to the transmission shaft side, Teijiku side seedling planting apparatus in which a cam member of the planting operation mechanism was a.

However, in this case, the cover for protecting the seals in both bearings is provided between the planting rotary case and the planting instrument case mounted via the double shaft structure. The body was lacking.

[0004]

SUMMARY OF THE INVENTION In the above-mentioned prior art, the planting rotary case itself rotates during the seedling transplanting work, and the planting tool which rotates with respect to the planting rotary case. Case
There is a drawback that weeds and straw debris scattered in the field are wound around the double-structured shaft portion which is a connecting portion with the sprue, which damages the oil seal.

[0005]

The present invention takes the following technical means in order to solve the above-mentioned problems. That is, the drive shaft 24 that is driven so as to project from the planted transmission case 22 side.
A planting rotary case 25 attached to the planting penetrating casing 25 penetrating the outer periphery of the drive shaft 24 and having a base portion on the base side.
A non-circular or eccentric sun gear 27 is provided on the metal 26 fixed to the first planetary gear 28 having the same number of teeth as that of the sun gear meshed with the sun gear 27 and rotated. The number of teeth of the first planetary gear 28 that meshes with the first planetary gear 28 is the same as the number of teeth of the second planetary gear 29, and the transmission support shaft 30 that is integrally rotated by the second planetary gear 29 is formed. Protruding to the outside of the attached rotating case 25,
A fixed shaft 31 which is concentric with the transmission support shaft 30 and has a double shaft structure and whose base side is fixed to the planting rotary case 25 is provided, and the seedling planting pawl 38 is provided on the transmission support shaft 30 side. Is attached to the fixed shaft 31. The fixed shaft 31 side is provided with a cam body 34 of the planting operation mechanism. The outer peripheral shaft side of the double shaft structure formed by the transmission support shaft 30 or the fixed shaft 31. And an outer end side of the bearing on the side of the planting rotary case 25 and the planting instrument case 3
Oil seals 41 and 42 are provided respectively on the inner end side of the bearing portion on the second side, and between the outer end side of the bearing portion of the planting rotary case 25 and the inner end side of the bearing portion of the planting tool case 32. A boss cover 43 is integrally provided on the planting equipment case side and surrounds the outer peripheral outer end side of the boss portion 25a of the oil seal receiving portion on the planting rotating case side. It was a seedling planting device.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a passenger-type traveling vehicle body, and a front mission case 3 is provided in front of a frame 2 extending in the front-rear direction.
Are provided, front wheels 4, 4 are axially mounted on the left and right ends of the front mission case 3 via front wheel drive cases that extend downward, and the front wheels 4, 4 are steerable. Also,
An engine 5 is mounted on the front and rear intermediate portions of the frame 2. A rear mission case 6 is fixed to the rear end of the frame 2, and the rear mission case 6 is attached.
To rear wheels 8, 8 via rear wheel transmission cases 7, 7. A control frame 9 is equipped with a control handle 10 on its upper part. Reference numeral 11 is a cover 12 that covers the engine 5.
It is a pilot seat provided at the top of the. Reference numeral 13 indicates a boarding floor. Reference numeral 14 is a column that stands upright on the rear part of the vehicle body.

Reference numeral 15 denotes a link mechanism, in which the base side of the upper link rod 15a and the lower link rod 15b are pivotally attached to the column 14, and the tip end side thereof is pivotally connected by a vertical link 15c equipped with a hitch 16. Reference numeral 17 denotes a hydraulic cylinder device, the cylinder-body side of which is pivotally connected to the frame 2, and the tip end of the piston 17a is pivotally connected to an arm 18 which is integral with the upper link of the parallel link mechanism 15 to connect the link mechanism 15. It is configured so that it can be operated vertically.

A transplanting machine 19 is detachably attached to a hitch 16 which is integrated with the vertical link 15c of the link mechanism 15. The transplanter 19 will be briefly described. The front side of the center of the transmission case 20 also serving as a frame is attached to the hitch 16 so as to be rotatable. A seedling supply table 21 is mounted on the upper side of the case 20 so as to be laterally movable, and a planting transmission case 22 is planted behind the transmission case 20 and extends rearward at a predetermined distance to the left and right. 23 is attached.

The planting device will be described in detail below.
A planting rotary case 25 is attached to a drive shaft 24 projecting to the side of the rear portion of the planting transmission case 22, and the planting rotary case 25 is rotated. In the planting rotary case 25, there is provided a sun gear 27 in which the front end side of the metal 26 fixed to the planting transmission case 22 side is projected into the case 25 and fixed thereto. The sun gear 27 is configured such that the pitch circle diameter is non-circular with respect to the axis of the drive shaft 24.
That is, the sun gear 27 itself may be a non-circular gear, or in the case of a perfect circle gear, the shaft 24 may be attached in an eccentric position so that the shaft 24 becomes a non-circular gear. A first planetary gear 28 meshes with the sun gear 27, and a second planetary gear 29 meshes with the first planetary gear 28 so as to be rotatably supported by the planted rotary case 25. Then, the transmission support shaft 30 that is integrally provided with each of the second planetary gears 29 and that rotates is provided with a rotation casing with a plant.
It projects to the outside of the sleeve 25.

The first planetary gears 28 meshing with the sun gear 27 thus constructed and the second planetary gears 29 meshing with the first planetary gears 28 are naturally non-circular gears or eccentric gears, and have angular velocities. Is configured in a non-uniform manner. On the outer periphery of the transmission support shaft 30, a fixed shaft 31 configured as a cylindrical shaft integrally attached to the planted rotary case 25 extends outwardly in the same direction as the transmission support shaft 30.

That is, the transmission shaft 30 has a double shaft structure in which the fixed shaft 31 is provided on the outer periphery of the transmission shaft 30. Reference numeral 32 denotes a planting equipment case, which is a metal cover fixed to the transmission shaft 30.
It is integrally attached to the shaft 30 via 33. In the planting tool case 32, a planting actuating mechanism is constructed as follows.

That is, a cam body 34 having a side surface spiral portion integral with the cylindrical fixed shaft 31 in the planting equipment case 32.
Is provided. Reference numeral 35 is a swinging lever, which has a middle portion pivotally attached by a pin 36, a proximal end portion of which is brought into contact with the cam body 34, and a distal end side of which is swung in the implant case 32. 37
Is a piston rod, which is engaged with and connected to the swing lever 35, and is configured to project downward from the implant case 32. Reference numeral 38 is a nail with an implant attached to the implant case 32. Numeral 39 is a seedling pusher unit integrated with the piston rod 37, and numeral 40 is a spring that elastically moves the piston rod 37 downward.

Reference numeral 41 is an oil seal on the side of the rotating case, which is inserted through the fixed shaft 31 of the double shaft structure on the side of the rotating case with the plant and which is the inner circumference of the bearing boss portion 25a of the rotating case 25. It seals between and. Reference numeral 42 denotes an oil seal on the side of the implant case, which is also inserted through the fixed shaft 31 having a double shaft structure to prevent muddy water from entering the inside of the implant case.

Reference numeral 43 denotes a boss cover for covering the boss portion 25a on the side of the rotary casing with a plant, which is the rotary case 25 with a plant.
Is inserted into the fixed shaft 31 between the outer end side of the bearing part and the inner end side of the bearing part of the planting case 32, and is integrally attached to the planting case side by bolts. It is configured to surround the outer peripheral side of the boss portion 25a of the oil seal receiving portion on the planted rotary case side.

As shown in FIG. 5, the cover body 43 may be integrally formed with the planting tool case 32, and the cover body 43 may be formed on the rotating case 25 side and the planting tool case. An embodiment may be used in which the sleeve 32 is simply fitted without being attached to any of the sides. Reference numeral 44 is a center float, and 45 is a side float. Both the floats are arranged below the transmission case 20 with a predetermined left-right interval. Then, the rear side is pivotally attached to the planting section transmission case 22 side through a bracket with a lateral axis, and the front side is vertically movable, and each flow is moved.
The front sides of the gates 44 and 45 are attached to a support 46 projecting from the transmission case 20 to the front side through bendable links 47 and 48 so that the float can move up and down.

Reference numeral 49 is a hydraulic valve, which is used for the center flow.
The valve 49 is interposed between the support 44 and the support 46, and the valve 49 is switched by the vertical movement of the float. By switching the valve 49, the hydraulic cylinder device 17 is controlled, and the hydraulic cylinder device 17 is automatically operated according to the depth of the paddy field to operate the link mechanism 1.
The transplanter 19 is controlled to move up and down via the control unit 5 so that the ground contact pressure on the float side is controlled to a substantially constant proper range. Further, this hydraulic valve 49 is
The interlocking mechanism (not shown) cooperates so that the switching lever 55 on the side can also perform the switching operation.

Reference numeral 50 denotes a fertilizer application apparatus, in which a fertilizer feeding machine 52 is provided below a hopper 51 for accommodating granular fertilizer, and the fed fertilizer is conveyed to a rear lower portion side by a transfer hose 53.
It is configured to be discharged to the inside of the forming groove by the groove making device 54 which is attached to the side of the floats 44 and 45 and forms a groove on the surface soil surface. The operation of the configuration of the above example will be described.

First, in the paddy field, while the traveling vehicle body 1 pulls the transplanter 19 parts, each part is transmission-driven from the engine 5 side. At this time, the planting machine 19 section switches the hydraulic valve 49 by operating the operation lever 55 on the control seat 11 side to lower the hydraulic valve 49, and pulls the floats 44 and 45 in a state where they are in contact with the soil surface. At this time, the hydraulic valve 49 is
The grounding of the float 44 automatically switches to the neutral position to maintain the grounding pressure of the float in an appropriate state. Also,
When the paddy depth fluctuates during the propulsion of the towed state, the height of the vehicle body 1 fluctuates from the surface soil surface, and the front side of the center float 44 moves up and down due to the fluctuation of the ground contact pressure, automatically. The hydraulic valve 49 is switched to and the transplanter 19 is controlled to move up and down, and the transplanter 19 side is always pulled while the height of the transplanter 19 is in a substantially constant range from the surface soil surface.

On the side of the transplanter 19 thus propelled, the seedling supply table 21 is reciprocated right and left by the operating mechanism in the transmission case 20. Then, the seedling N mounted on the supply table 21 is planted on the surface soil of the paddy field by the planting device 23 as follows. First, the rotation case 2 with a plant is driven by the drive shaft 24.
5 rotates. At this time, since the sun gear 27 installed in the case 25 is in a non-rotating state by the metal 26 fixed to the transmission case 20, the first planetary gear 28 meshing with the sun gear 27 rotates. To be done. Further, the second planetary gear 29 that meshes with the first planetary gear 28 is the first planetary gear 2
The rotation is reversed with respect to 8, and substantially no rotation is performed with respect to the planted rotating case 25. This is because the sun gear 27, the first planetary gear 28, and the second planetary gear 29 are all configured to have the same number of teeth. However, since these gears are provided eccentrically with respect to the non-circular gear or the shaft, even if the number of rotations is the same, the speeds of each of them fluctuate and the second planetary gear 29 is integrated with the final planetary gear 29. The shaft 30 provided in the above-mentioned structure makes a rotary motion with respect to the rotary case 25. Therefore, the planting tool case 32 fixed to the shaft 30 is rotated with respect to the rotating case 25, and the planting claw 38 fixed to the planting tool case 32 is located on the side surface. In the visual sense, a lobe-shaped planting locus (a) that is long in the vertical direction and narrow in the front and back is drawn.

On the other hand, the cam body 34 in the planting equipment case 32
Is integrally provided on the cylindrical fixed shaft 31 attached to the rotating case 25 side, the lever 35 swings around the pin 36 as a fulcrum by the rotation of the planting tool case 32. Therefore, since the piston rod 37 engaged with the lever 35 is slidably supported by the planting tool case 32, the piston rod 37 moves up and down, and the seedling pusher 39 attached to the lower end side also moves up and down. .

In this way, the planting claws 38 draw the planting locus (a) and plant seedlings from the seedling dividing opening provided in the seedling stopper frame provided opposite to the lower end side of the seedling supply base 21 side. At the time of separation, the seedling extruder 39 is positioned higher on the back side of the planting claw 38 and serves as a stopper at the time of seedling division, and when the seedling planting claw 38 plunges into the surface soil of the paddy field, this seedling extruder 39 is used. Rapidly moves downward by the action of the spring 40 that repels the piston rod 37, and the seedling N in the split engagement is planted.

In this way, the seedling planting work is carried out, but the operation of the planting device 23 is carried out by the planting rotary case 2.
By the rotation state by 5 and the rotation of the planting equipment case 32,
The boss portion 2 which corresponds to the side projecting portion on the side of the rotating case 25.
Straws and weeds scattered on the surface soil of the field are wound around 5a with the mud attached, and these try to enter the gap between the outer end of the boss portion 25a and the inner end of the bearing portion of the planting case 32. In the embodiment of the present invention, the cover body 43 is provided in the gap portion, and the cover body 43 is provided.
The bowl-shaped portion of the boss portion 25a encloses the outer end side portion of the boss portion 25a, so that the wrapping of straw waste and weeds does not enter into the double shaft constituent portion. Therefore, the oil seal 4
It does not damage 1, 42, and the durability of the seal part can be improved and maintained.

[0023]

According to the present invention, in the gap between the outer end of the boss portion 25a and the inner end of the bearing portion of the planting tool case 32,
It is possible to prevent straw scraps and weeds from being caught in the field from entering the shaft of the double structure and prevent the oil seals 41 and 42 from being damaged, and the durability of the seal part can be improved.

[Brief description of drawings]

1] Side view

FIG. 2 is a plan sectional view of a main part.

FIG. 3 is a partial cross-sectional side view.

[Figure 4] Slope view of the main part

FIG. 5 is a cross-sectional view of main parts of another example.

[Explanation of symbols]

 22 Transmission Case with Plant 24 Drive Shaft 25 Rotating Case with Plant 25a Boss 26 Metal 27 Sun Gear 28 First Planetary Gear 29 Second Planetary Gear 30 Transmission Spindle 31 Fixed Axis 32 Planting Equipment Case 34 Cam body 38 Nail with planting plant 41 Oil seal 42 Oil seal 43 Boss part cover body

Front page continuation (72) Inventor Hiroyuki Niiyama 1 Yakura, Tobe-cho, Iyo-gun, Ehime Pref.Iseki Agricultural Machinery Co., Ltd. (72) Inventor Hitoshi Yamazaki 1 No. 8 Yakura, Ibu-gun, Ehime Pref.Iseki Agricultural Machinery Co., Ltd. (72) ) Inventor Seike Rihaku 1 Yakura, Tobe-cho, Iyo-gun, Ehime Pref.Iseki Agricultural Machinery Co., Ltd. (72) Inventor Katsura Nomura 1 Yakura, Tobe-cho, Iyo-gun Ehime Pref.Iseki Agricultural Machinery Co., Ltd. (72) Inventor Kamiya Hisashi 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Hideyuki Kusamoto 1-chome, Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Engineering Department, Izeki Agricultural Machinery Co., Ltd. (72) Takeshi Ouchi, Iyo-gun No. 1 Yakura, Tobe Town Inside the Engineering Department of Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A planted rotary case 25 mounted on a drive shaft 24 which is driven so as to project from the planted transmission case 22 side.
A sun gear 27, which is non-circular or eccentric to the metal 26 fixed to the planted transmission case 22 so as to penetrate the outer periphery of the drive shaft 24, is provided therein.
7, a first planetary gear 28 having the same number of teeth as the sun gear meshed with 7 and a first planetary gear 28 meshed with the first planetary gear 28 and having the same number of teeth. A planetary gear 29 is constituted, and a transmission support shaft 30 which is integrally rotated with the second planetary gear 29 is protruded to the outside of the planted rotary case 25, and is coaxial with the transmission support shaft 30 and is a double shaft. A fixed shaft 31 having a structure and a base side fixed to the planting rotary case 25 is provided, and a planting instrument case 32 provided with a seedling planting claw 38 is attached to the transmission support shaft 30 side. , Fixed shaft 31
The cam body 34 of the planting operation mechanism is provided on the side of the transmission support shaft 3
0 or the outer peripheral shaft side of the double shaft structure formed by the fixed shaft 31, the outer end side of the bearing part on the side of the planting rotary case 25 and the inner end side of the bearing part on the side of the planting tool case 32. Oil seals
Are provided between the bearing outer end side of the planting rotary case 25 and the bearing inner end side of the planting case 32, and are integrally formed on the planting tool case side. Is installed in the
A seedling planting device provided with a boss cover 43 that surrounds the outer peripheral side of the boss 25a of the oil seal receiving portion on the side of the sprue.