JPS6312670Y2 - - Google Patents
Info
- Publication number
- JPS6312670Y2 JPS6312670Y2 JP4269979U JP4269979U JPS6312670Y2 JP S6312670 Y2 JPS6312670 Y2 JP S6312670Y2 JP 4269979 U JP4269979 U JP 4269979U JP 4269979 U JP4269979 U JP 4269979U JP S6312670 Y2 JPS6312670 Y2 JP S6312670Y2
- Authority
- JP
- Japan
- Prior art keywords
- hand
- wheels
- speed
- switching
- rice transplanter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 241000209094 Oryza Species 0.000 claims description 19
- 235000007164 Oryza sativa Nutrition 0.000 claims description 19
- 235000009566 rice Nutrition 0.000 claims description 19
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は、機体下側に上下動可能に支持された
フロートを有し、かつ機体に装備された油圧装置
により上下動される走行車輪を備え、フロートに
作用する接地圧変動に応じて油圧装置により走行
車輪を上下動させて機体が田面に対し上昇、下降
されるようにした自動昇降手段を具備すると共
に、前記油圧装置を操縦者の手元で車輪下降方向
に強制作動させる手元操作手段を設けた田植機に
おいて、田植機の旋回時などに機体を強制浮上さ
せる機体上昇装置の改良に関するものである。[Detailed description of the invention] [Industrial application field] The present invention has a float supported on the underside of the aircraft body so as to be able to move up and down, and running wheels that are moved up and down by a hydraulic system installed on the aircraft body. The machine is equipped with an automatic elevating means that moves the running wheels up and down using a hydraulic device in response to ground pressure fluctuations acting on the float to raise and lower the aircraft with respect to the rice field. This invention relates to an improvement in a rice transplanter body lifting device that forcibly levitates the rice transplanter body when turning, etc., in a rice transplanter equipped with a hand-operated means for forcibly operating the wheels in the lowering direction.
[従来の技術]
前記のような田植機において、機体の旋回時に
フロートによつて泥土を押寄せて凹凸を生じさせ
ないためには、機体を急速に浮上させることが必
要である。[Prior Art] In the rice transplanter as described above, in order to prevent the float from pushing mud and creating unevenness when the machine body turns, it is necessary to raise the machine body rapidly.
[考案が解決しようとする問題点]
しかし従来のこの種の田植機は、植付作業時に
は自動昇降手段が働いて田面に対する機体レベル
が略一定になるような手段が設けられているた
め、油圧装置の動作速度を速くすると、植付作業
中に機体が過敏に昇降動し、作動が不安定になる
という問題がある。[Problems to be solved by the invention] However, conventional rice transplanters of this type are equipped with automatic lifting means to keep the machine at a substantially constant level relative to the rice field during planting operations, so hydraulic pressure If the operating speed of the device is increased, there is a problem that the machine body moves up and down sensitively during the planting operation, making the operation unstable.
[問題点を解決するための手段]
本考案は、前述した問題を解決するためになさ
れたもので、旋回時に操作される手元操作により
機体を強制浮上させる時だけ油圧装置による車輪
の下降を急速に作動させることにより、植付作業
中には機体が過敏に昇降しないものでありながら
何ら面倒な操作を行なうことなく、旋回時などに
は機体を急速に浮上させることができる機体上昇
装置を提供することを目的とするものである。[Means for solving the problem] The present invention was made to solve the above-mentioned problem, and only when the aircraft is forced to levitate by the hand control operated during a turn, the wheels are lowered rapidly by the hydraulic system. To provide a machine lifting device that does not raise or lower the aircraft hypersensitively during planting work, but can quickly raise the aircraft to the surface when turning, etc., without any troublesome operations. The purpose is to
前記の目的を達成するために、本考案の機体浮
上装置は、前述のような歩行型田植機において、
前記油圧装置の油圧シリンダとオイルタンク間の
油路および切換弁を、自動昇降時も手元操作手段
による手動下降時も同じものを用いると共に、手
元操作手段の作動と連動して圧油の流速を速く
し、車輪を急下降させる下降速に切換える切換手
段を設けてなることを特徴とする。 In order to achieve the above-mentioned object, the body flotation device of the present invention can be used in a walking rice transplanter as described above.
The oil passage and switching valve between the hydraulic cylinder and the oil tank of the hydraulic system are the same during automatic lifting and manual lowering using the hand operating means, and the flow rate of the pressure oil is controlled in conjunction with the operation of the hand operating means. It is characterized by being provided with a switching means for switching to a descending speed that makes the wheels go down rapidly.
[実施例]
以下、図面を参照して本考案の一実施例を具体
的に説明する。[Example] Hereinafter, an example of the present invention will be specifically described with reference to the drawings.
第1図において、符号1は歩行型田植機の機体
で、機体1の下側にはフロート2が配置されてい
る。該フロート2は、その後部が上下回動自在に
機体1に枢着されて、フロート2の前部はリンク
3を介して昇降自在に機体1に連結されている。
機体1には左右両側に一対のスイングアーム4が
上下傾動可能に枢着され、そのスイングアーム4
の自由端側に左,右の走行車輪5が装着されてあ
り、該車輪5は、機体1の後部に設けた植付体6
と共に、機体1の前部に設けたエンジン7によつ
て駆動されるようになつている。 In FIG. 1, reference numeral 1 indicates the body of a walking rice transplanter, and a float 2 is arranged below the body 1. The rear part of the float 2 is pivotally attached to the body 1 so as to be movable up and down, and the front part of the float 2 is connected to the body 1 via a link 3 so as to be movable up and down.
A pair of swing arms 4 are pivotally attached to the fuselage 1 on both the left and right sides so as to be tiltable up and down.
Left and right running wheels 5 are mounted on the free end side of the machine, and the wheels 5 are attached to a planting body 6 provided at the rear of the machine body 1.
At the same time, it is driven by an engine 7 provided at the front of the aircraft body 1.
前記機体1には油圧装置8が設けられ、該油圧
装置は第1図乃至第3図に示すように、油圧ポン
プ9、切換弁10、油圧シリンダ11および図示
しないタンクを備えている。上記切換弁10は、
下端が前記フロート2の前部に連繋された昇降検
知手段12と連結されていて、圃場の田面を滑走
するフロート2の接地圧変動に応じて切換弁10
の弁休13を回動させ、油圧シリンダ11の一端
側または他端側に圧油を供給してシリンダ11に
嵌挿されたピストン14を進出、退入させ、ピス
トン14に連結手段15を介して連結されたスイ
ングアーム4を揺動させるようにしてあり、これ
によつて前記フロート2の接地圧が大きい時には
耕盤上を走行する走行車輪5を下降方向に、接地
圧が小さい時には該車輪5を上昇方向にそれぞれ
付勢することにより、機体1を田面に対し上昇、
下降させて機体レベルを略一定にし、これによつ
て植付体6による苗の植付けが所定深さに規制さ
れるようになつている。 The body 1 is provided with a hydraulic system 8, which, as shown in FIGS. 1 to 3, includes a hydraulic pump 9, a switching valve 10, a hydraulic cylinder 11, and a tank (not shown). The switching valve 10 is
The lower end is connected to a lift detection means 12 connected to the front part of the float 2, and the switching valve 10 is connected to a lift detection means 12 connected to the front part of the float 2, and the switching valve 10 is connected to a lift detection means 12 connected to the front part of the float 2.
The valve rest 13 is rotated to supply pressure oil to one end or the other end of the hydraulic cylinder 11 to advance or retract the piston 14 fitted into the cylinder 11, and connect the piston 14 to the piston 14 via the connecting means 15. When the ground pressure of the float 2 is high, the wheels 5 running on the plowing platform are moved downward, and when the ground pressure is low, the wheels 5 are moved downward. By biasing 5 in the upward direction, the aircraft 1 rises against the rice field.
The machine is lowered to maintain a substantially constant level, thereby regulating the planting of seedlings by the planting body 6 to a predetermined depth.
なお、上述した基本構成および作動は、従来の
この種の田植機と同じである。 Note that the basic configuration and operation described above are the same as those of this type of conventional rice transplanter.
本実施例の機体上昇装置は、機体1の苗タンク
20より後方の後端部から斜め後上方に延びるハ
ンドル16に手元操作手段となる操作レバー18
が設けられ、該レバー18に連結された操作ケー
ブル19が前記切換弁10の弁体13に設けたア
ーム21に連結されて、前記ケーブル19、アー
ム21および弁体13により、機体上昇操作手段
22が構成されている。また、手元操作レバー1
8には油圧装置の作動速度切換手段23の操作ケ
ーブル24が連結されてあり、該操作ケーブル2
4は第1図、第4図に示すようにリンク25を介
してクラツチ機構26のシフタ27に連結され、
また、前記油圧ポンプ9のギヤ17の回転軸28
に摺動可能に設けた係合子29がシフタ27に係
合され、さらに、係合子29の両側方には高速側
プーリ30、低速側プーリ31が前記回転軸28
に回転自在に軸支されてあり、前記両プーリ3
0,31は無端ベルト32,33を介してエンジ
ン7により常時駆動されるようになつており、前
記リンク25は戻しばね34に支持されている。 The fuselage lifting device of this embodiment has a handle 16 that extends diagonally rearward and upward from the rear end of the fuselage 1 behind the seedling tank 20, and an operating lever 18 serving as a hand-operated means.
An operating cable 19 connected to the lever 18 is connected to an arm 21 provided on the valve body 13 of the switching valve 10, and the cable 19, arm 21, and valve body 13 operate the aircraft lifting operation means 22. is configured. In addition, hand control lever 1
An operating cable 24 of an operating speed switching means 23 of the hydraulic system is connected to 8.
4 is connected to a shifter 27 of a clutch mechanism 26 via a link 25, as shown in FIGS.
Further, the rotation shaft 28 of the gear 17 of the hydraulic pump 9
An engager 29 that is slidably provided is engaged with the shifter 27, and furthermore, on both sides of the engager 29, a high-speed pulley 30 and a low-speed pulley 31 are connected to the rotating shaft 28.
The two pulleys 3 are rotatably supported on the
0 and 31 are constantly driven by the engine 7 via endless belts 32 and 33, and the link 25 is supported by a return spring 34.
次に、以上のように構成された機体上昇装置の
作動について説明する。手元操作レバー18を操
作しない時には操作ケーブル19,24が緩めら
れており、切換弁10は前述した植付作業時の自
動昇降作動を行ない、油圧ポンプ9は係合子29
が低速側プーリ31と係合されているので低速回
転している。従つてこの状態では、前述したフロ
ート2の接地圧変動に応じた走行車輪5の上下
動、すなわち機体1の下降、上昇は急激に行なわ
れない。 Next, the operation of the aircraft lifting device configured as above will be explained. When the hand control lever 18 is not operated, the operation cables 19 and 24 are loosened, the switching valve 10 performs the automatic lifting operation during the planting work described above, and the hydraulic pump 9 is operated by the engager 29.
is engaged with the low-speed side pulley 31, so it is rotating at a low speed. Therefore, in this state, the traveling wheels 5 do not move up and down in response to the above-described ground pressure fluctuations of the float 2, that is, the body 1 does not rise or fall rapidly.
旋回時において、手元操作レバー18を回動操
作させて操作ケーブル19を引くと、アーム21
を介して切換弁10の弁体13が回動して油圧シ
リンダ11の走行車輪5下降側すなわち機体1上
昇側に圧油を供給し、フロート2の接地圧にかか
わらず強制的に機体1を浮上させる。この操作と
連動して操作ケーブル24も引かれ、戻しばね3
4のばね力に抗してシフタ27が回動し、係合子
29を低速側プーリ31から離し、高速側プーリ
30と係合させる。このため油圧ポンプ9が高速
回転して切換弁10を介しシリンダ13に急速に
圧油を送り、車輪5の下降を、自動昇降時の車輪
下降速よりも急下降速でもつて機体1の浮上を急
速に行なうことになる。従つて、この操作を田植
機の旋回時に行なうことにより、フロート2によ
る泥土の泥押しを防止でき、耕土に凹凸を生じる
ことがない。 When turning, when the hand control lever 18 is rotated and the control cable 19 is pulled, the arm 21
The valve body 13 of the switching valve 10 rotates through the hydraulic cylinder 11 to supply pressure oil to the descending side of the traveling wheels 5, that is, the ascending side of the aircraft body 1, and forcibly move the aircraft body 1 regardless of the ground pressure of the float 2. bring to the surface. In conjunction with this operation, the operation cable 24 is also pulled, and the return spring 3
The shifter 27 rotates against the spring force of 4, separating the engager 29 from the low-speed pulley 31 and engaging it with the high-speed pulley 30. For this reason, the hydraulic pump 9 rotates at high speed and rapidly sends pressure oil to the cylinder 13 via the switching valve 10, lowering the wheels 5 at a steeper lowering speed than the wheel lowering speed during automatic lifting, and lifting the aircraft 1. It will be done quickly. Therefore, by performing this operation while the rice transplanter is turning, it is possible to prevent the float 2 from pushing the mud, and the cultivated soil will not be uneven.
さらに田植機の旋回完了後は、手元操作レバー
18を回動前の位置に戻せば、操作ケーブル1
9,24が緩められ、前述した植付作業時の状態
に戻る。なお、この場合にシフタ27は戻しばね
34のばね力で逆回動して、係合子29を高速側
プーリ30から離して低速側プーリ31と係合さ
せる。 Furthermore, after the rotation of the rice transplanter is completed, if the hand control lever 18 is returned to the position before rotation, the operation cable 1
9 and 24 are loosened, and the plant returns to the state at the time of the planting operation described above. In this case, the shifter 27 is rotated in the opposite direction by the spring force of the return spring 34 to separate the engager 29 from the high-speed pulley 30 and engage it with the low-speed pulley 31.
なお、本考案において、適宜の手段によつて手
元操作レバー18の回動操作により切換弁10の
弁体13を中立状態に停止し、機体1を上昇状態
に保持できるようにすることが好ましい。 In the present invention, it is preferable that the valve body 13 of the switching valve 10 be stopped in a neutral state by rotating the hand-operated lever 18 by appropriate means, so that the body 1 can be maintained in an elevated state.
[考案の効果]
以上説明したように、本考案による田植機の機
体上昇装置は、手元操作手段の操作だけで、特別
な操作を付加することなく切換弁の切換えと共に
圧油の流速が速くなり、油圧装置による車輪の下
降動作を自動昇降時の下降速よりも急下降速に切
換えて田植機の機体を急速に上昇させることがで
きるので、旋回操作を面倒にすることなく、旋回
時のフロートによる泥押しを防止でき、しかも、
植付作業時には苗の植付深さを所定深さに規制す
るためのフロートの接地圧に応じた機体の昇降を
過敏にするような不具合を生ずることもなく、ま
た、切換弁の構成が単純で切換操作が確実に行え
故障も少ないという効果がある。[Effects of the invention] As explained above, the rice transplanter body lifting device according to the invention can increase the flow rate of pressure oil by switching the switching valve and increasing the flow rate by simply operating the hand control means and without any special operations. , the lowering operation of the wheels by the hydraulic system can be switched to a steeper descending speed than the descending speed during automatic lifting, allowing the body of the rice transplanter to rise rapidly. It is possible to prevent mud from being pushed by the
During planting work, there is no problem such as the raising and lowering of the machine being sensitive to the ground pressure of the float that regulates the planting depth of seedlings to a predetermined depth, and the configuration of the switching valve is simple. This has the effect that switching operations can be performed reliably and there are fewer failures.
第1図は本考案の一実施例による機体上昇装置
を備えた歩行型田植機を示す概略側面図、第2図
は油圧装置の一部を切欠いた側面図、第3図は切
換弁部の断面説明図、第4図は油圧ポンプ駆動部
の構成説明図である。
1……機体、2……フロート、3……リンク、
4……スイングアーム、5……走行車輪、6……
植付体、7……エンジン、8……油圧装置、9…
…油圧ポンプ、10……切換弁、11……油圧シ
リンダ、12……検知手段、13……弁体、14
……ピストン、15……連結手段、16……ハン
ドル、17……ギヤ、18……手元操作レバー、
19……操作ケーブル、20……苗タンク、21
……アーム、22……機体上昇操作手段、23…
…油圧装置の作動速度切換手段、24……操作ケ
ーブル、25……リンク、26……クラツチ機
構、27……シフタ、28……回転軸、29……
係合子、30,31……高速側、低速側プーリ、
32,33……無端ベルト、34……戻しばね。
Fig. 1 is a schematic side view showing a walking rice transplanter equipped with a body lifting device according to an embodiment of the present invention, Fig. 2 is a side view with a part of the hydraulic system cut away, and Fig. 3 is a diagram of the switching valve section. The cross-sectional explanatory diagram and FIG. 4 are explanatory diagrams of the configuration of the hydraulic pump drive section. 1... Aircraft, 2... Float, 3... Link,
4... Swing arm, 5... Running wheel, 6...
Planted body, 7... Engine, 8... Hydraulic system, 9...
... Hydraulic pump, 10 ... Switching valve, 11 ... Hydraulic cylinder, 12 ... Detection means, 13 ... Valve body, 14
... Piston, 15 ... Connection means, 16 ... Handle, 17 ... Gear, 18 ... Hand control lever,
19... Operation cable, 20... Seedling tank, 21
...Arm, 22...Mechanism for lifting the aircraft, 23...
... Hydraulic system operating speed switching means, 24 ... Operation cable, 25 ... Link, 26 ... Clutch mechanism, 27 ... Shifter, 28 ... Rotating shaft, 29 ...
Engagement element, 30, 31...high speed side, low speed side pulley,
32, 33... Endless belt, 34... Return spring.
Claims (1)
有し、かつ機体に装備された油圧装置により上下
動される走行車輪を備え、フロートに作用する接
地圧変動に応じて油圧装置により走行車輪を上下
動させて機体が田面に対し上昇、下降されるよう
にした自動昇降手段を具備すると共に、前記油圧
装置を操縦者の手元で車輪下降方向に強制作動さ
せる手元操作手段を設けた田植機において、前記
油圧装置の油圧シリンダとオイルタンク間の油路
および切換弁を、自動昇降時も手元操作手段によ
る手動下降時も同じものを用いると共に、手元操
作手段の作動と連動して圧油の流速を早くし、車
輪を急下降させる下降速に切換える切換手段を設
けてなる歩行型田植機の機体上昇装置。 It has a float supported on the underside of the fuselage so that it can move up and down, and a running wheel that is moved up and down by a hydraulic device installed on the fuselage. A rice transplanter equipped with an automatic lifting means that moves the machine up and down to raise and lower the machine body relative to the rice field, and a hand-operated means that forcibly operates the hydraulic device in the direction of lowering the wheels at the operator's hand. , the oil passage and switching valve between the hydraulic cylinder and the oil tank of the hydraulic system are the same during automatic lifting and manual lowering using the hand-operated means, and the flow rate of the pressure oil is adjusted in conjunction with the operation of the hand-operated means. A device for lifting the body of a walk-behind rice transplanter, which is provided with a switching means for switching to a descending speed that speeds up the speed and rapidly lowers the wheels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4269979U JPS6312670Y2 (en) | 1979-03-31 | 1979-03-31 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4269979U JPS6312670Y2 (en) | 1979-03-31 | 1979-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55142912U JPS55142912U (en) | 1980-10-14 |
JPS6312670Y2 true JPS6312670Y2 (en) | 1988-04-12 |
Family
ID=28915691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4269979U Expired JPS6312670Y2 (en) | 1979-03-31 | 1979-03-31 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6312670Y2 (en) |
-
1979
- 1979-03-31 JP JP4269979U patent/JPS6312670Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS55142912U (en) | 1980-10-14 |
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