JPH06303834A - Grain culm conveying apparatus of combine harvester - Google Patents

Abstract

PURPOSE:To enable removal of clogging in a passage for holding and carrying reaped grain culms by a simple structure. CONSTITUTION:In a grain culms conveying apparatus, a holding rail 17 opposite to a conveying chain 16 is attached to the top of U-shaped lever 21 extended in a state by-passing the grain culms carrying passage and simultaneously a part 22 on the top end side of the U-shaped lever 21 is rotatably formed so as to be able to freely change over to a conveying action position and retreating position keeping away a holding rail 17 from the conveying chain 16. A lock member 27 capable of changing over to a lock posture engaging and locking in a state where a part 22 on the top end side of U-shaped lever 21 is placed on a conveying action position and a lock releasing posture for releasing the engaging lock is pivoted with a part 23 on base end side of U-shaped lock and an engaging part K of this locking member 27 and the part 22 on the top end side is formed in a state keeping engaging state against holding reaction force of conveying grain culms and permitting locking release operation of the lock member 27.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、搬送チェーンに対向す
る挟持レールを搬送装置フレームから穀稈搬送通路を迂
回して延出されたＵ字杆の先端部に取付けるとともに、
前記Ｕ字杆の先端側部分を、搬送作用位置と前記挟持レ
ールを前記搬送チェーンから遠ざける後退位置とに切り
換え回動自在に設けてあるコンバインの穀稈搬送装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention attaches a sandwiching rail facing a conveyor chain to a tip of a U-shaped rod extending from a conveyor frame and bypassing a grain culm conveying passage.
The present invention relates to a combine grain culm transporting device in which a tip side portion of the U-shaped rod is rotatably provided by switching between a transporting action position and a retracted position in which the holding rail is moved away from the transport chain.

【０００２】[0002]

【従来の技術】上記コンバインの穀稈搬送装置におい
て、従来では、例えば実開昭６１−１４２５３９号公報
に示されるように、挟持レールを支持するＵ字杆の先端
部を回動自在に構成するとともに、その先端側を挟持作
用位置に保持する弾性係合部材を設け、挟持レールに対
する挟持反力が設定以上になると、前記弾性係合部材が
係合状態を解除してＵ字杆先端部が後退回動するよう構
成したものがあった。2. Description of the Related Art In the above-mentioned combine grain culm transporting apparatus, conventionally, as shown in, for example, Japanese Utility Model Laid-Open No. 61-142539, the tip of a U-shaped rod for supporting a sandwiching rail is rotatably constructed. At the same time, an elastic engaging member for holding the tip end side at the nipping action position is provided, and when the nipping reaction force against the nipping rail becomes equal to or more than a set value, the elastic engaging member releases the engaged state and the tip of the U-shaped rod moves. Some were configured to rotate backwards.

【０００３】[0003]

【発明が解決しようとする課題】上記従来構造は、刈取
穀稈の挟持搬送経路中で穀稈詰まりが発生したような場
合であっても、Ｕ字杆の先端部が弾性後退回動して、そ
の詰まり穀稈が搬送下手側に搬送されるのを自動的に許
容することで、詰まり状態を解消させることができるよ
うにしたものである。ところが、上記したように、前記
Ｕ字杆先端部分の弾性保持力の設定が難しく、この弾性
保持力が弱すぎると通常の穀稈搬送中において搬送穀稈
のボリュームが大になったような場合に頻繁に弾性後退
して、挟持搬送機能が阻害されることになり、又、前記
弾性保持力が強すぎると穀稈詰まりに対して有効に機能
せず、しかも、人為作業による詰まり穀稈除去作業に際
にＵ字杆先端部の後退回動が重くなって作業性が悪くな
る欠点もあった。本発明は、合理的改良によって、構造
の複雑化を招くことなく上記不具合点を解消することを
目的としている。In the conventional structure described above, the tip of the U-shaped rod is elastically retracted and rotated even when the grain culm is jammed in the sandwiching and conveying path of the cut grain culm. By automatically allowing the jammed grain culm to be conveyed to the lower side, it is possible to eliminate the jammed state. However, as described above, it is difficult to set the elastic holding force of the tip portion of the U-shaped rod, and if this elastic holding force is too weak, the volume of the transported grain culms becomes large during the normal grain culm transportation. If the elastic holding force is too strong, it will not work effectively against grain culm clogging, and the clogging grain culling will be removed manually. There is also a drawback in that workability deteriorates because the backward rotation of the tip of the U-shaped rod becomes heavy during work. It is an object of the present invention to solve the above-mentioned inconveniences by reasonably improving the structure without complicating the structure.

【０００４】[0004]

【課題を解決するための手段】本発明の特徴構成は、冒
頭に記載したコンバインの穀稈搬送装置において、前記
Ｕ字杆の先端側部分が搬送作用位置にある状態で係合ロ
ックするロック姿勢と、係合ロックを解除するロック解
除姿勢とに切り換え回動自在なロック部材を前記Ｕ字杆
の基端側部分に枢支し、このロック部材と前記先端側部
分との係合部を、搬送穀稈の挟持反力に対して係合状態
を維持し且つ前記ロック部材のロック解除操作を許容す
る状態で形成してある点にある。A feature of the present invention is that in the combine grain culm transporting apparatus described at the beginning, the locking posture is engaged and locked in a state where the tip end side portion of the U-shaped rod is in the transporting operation position. And a lock member that is rotatable to switch to a lock releasing position for releasing the engagement lock is pivotally supported on the base end side portion of the U-shaped rod, and the engaging portion between the lock member and the tip end side portion is The point is that it is formed in a state in which the engaged state is maintained with respect to the clamping reaction force of the conveyed grain culm and the unlocking operation of the lock member is allowed.

【０００５】[0005]

【作用】前記ロック部材をロック姿勢に設定しておく
と、このロック部材と挟持レールを支持するＵ字杆先端
側部分との係合部において、搬送穀稈の挟持反力に対し
て係合状態を維持するから、搬送穀稈による挟持反力に
対して先端側部分を確実に位置規制することができる。
又、前記係合部はロック部材のロック解除操作を許容す
る状態で形成してあるから、挟持レールにおいて穀稈詰
まりが発生した場合であってもロック部材を容易に解除
操作でき、先端側部分を開放回動させることができるも
のとなる。When the lock member is set in the locked posture, the lock member and the U-rod tip end side portion supporting the gripping rail engage with the gripping reaction force of the conveying grain stem at the engaging portion. Since the state is maintained, the position of the tip side portion can be reliably regulated with respect to the clamping reaction force by the transported grain culm.
Further, since the engaging portion is formed in a state in which the unlocking operation of the lock member is allowed, the lock member can be easily released even when grain jamming occurs in the sandwiching rail, and the tip side portion Can be opened and rotated.

【０００６】[0006]

【発明の効果】従って、穀稈の搬送作用中においては、
Ｕ字杆先端側部分はロック部材との係合作用により確実
に挟持作用位置を保持することができ、穀稈ボリューム
の変化があっても、円滑な挟持搬送機能を維持できる。
又、穀稈詰まりが発生した場合には、穀稈詰まりに起因
する挟持反力にかかわらず、ロック部材のロック解除操
作が許容されるから、詰まり穀稈除去作業が容易迅速に
行えるものとなった。又、Ｕ字杆先端側部分とロック部
材との合理的係合構造により、部品点数少なく簡単な構
成で達成できる。[Effects of the Invention] Therefore, during the transportation operation of the grain culm,
The tip end portion of the U-shaped rod can surely hold the sandwiching action position by the engaging action with the lock member, and the smooth sandwiching and conveying function can be maintained even if the grain stem volume changes.
In addition, when a grain culm is clogged, the unlocking operation of the lock member is allowed regardless of the clamping reaction force caused by the grain culm clogging, so that the jammed grain culm removal work can be performed easily and quickly. It was Further, due to the rational engagement structure between the U-shaped rod tip side portion and the lock member, the number of parts can be reduced and the structure can be simplified.

【０００７】[0007]

【実施例】以下、実施例を図面に基いて説明する。図６
にコンバインの前部を示している。このコンバインは、
クローラ走行装置１を備えた機体フレーム２上に脱穀装
置３を搭載し、機体フレーム２の前部に刈取前処理部４
を昇降自在に連結し、刈取前処理部４の右横側に搭乗運
転部５を備えて構成してある。前記刈取前処理部４は、
倒伏穀稈を立姿勢に引き起こす引起し装置６、引起され
た穀稈の株元側を切断するバリカン型刈取装置７、刈取
られた穀稈を刈り幅方向中央側に寄せ集める掻込みパッ
カー８、寄せ集められた縦姿勢の刈取穀稈を徐々に横向
き姿勢になるように姿勢変更しながら脱穀装置３におけ
るフィードチェーン９始端部まで搬送する縦搬送装置１
０等を備えて構成してある。前記掻込みパッカー８は、
図５に示すように、引起し装置６の後部側に位置する上
部のベベルギアケース１１を介して動力が供給される伝
動軸１２により回動駆動するよう構成するとともに、伝
動軸１２と掻込みパッカー８との間には皿ばね式のトル
クリミッタ１３を介装して、穀稈の噛み込みに起因して
回転が阻害された場合には、空回りしてパッカー８が破
損しないようにしてある。前記トルクリミッタ１３はナ
ット１４の締め付け具合でトルク調節できるよう構成し
てある。又、伝動軸１２の外周部には合成樹脂性の筒状
体１５を外嵌装着して、ワラ屑が伝動軸１２に直接巻き
付くのを防止してある。この筒状体１５は、図４に示す
ように、２分割構成であって、スリットＳを形成した厚
肉の本体部分１５ａと、このスリットＳを閉塞する薄肉
のカバー部分１５ｂとで構成され、これらをビスで連結
してある。従って、この筒状体１５は着脱自在であり、
取り外すことにより前記トルクリミッタ１３のトルク調
節を行えるようにしてある。Embodiments will be described below with reference to the drawings. Figure 6
Shows the front part of the combine. This combine is
The threshing device 3 is mounted on the machine body frame 2 having the crawler traveling device 1, and the pre-mowing processing unit 4 is provided on the front part of the machine body frame 2.
Is connected so as to be able to move up and down, and a boarding operation unit 5 is provided on the right lateral side of the pre-mowing processing unit 4. The pre-reaping processing unit 4 is
A raising device 6 that causes the fallen grain culm to stand upright, a clipper-type cutting device 7 that cuts the root side of the raised grain culm, a scraping packer 8 that collects the harvested grain culm in the widthwise center side, A vertical conveying device 1 that conveys the gathered vertical mowing culms to the starting end of the feed chain 9 in the threshing device 3 while gradually changing the posture so that the harvested culms are in a horizontal position.
It is configured with 0 and the like. The scraping packer 8 is
As shown in FIG. 5, it is configured to be rotationally driven by a transmission shaft 12 to which power is supplied via an upper bevel gear case 11 located on the rear side of the raising device 6, and the transmission shaft 12 and the scraping packer. A disk spring type torque limiter 13 is interposed between the packer 8 and the gears 8 to prevent the packer 8 from idling and being damaged when the rotation is hindered due to the bite of the grain culms. The torque limiter 13 is configured so that the torque can be adjusted depending on how tightly the nut 14 is tightened. Further, a synthetic resin cylindrical body 15 is externally fitted and mounted on the outer peripheral portion of the transmission shaft 12 to prevent straw dust from being directly wound around the transmission shaft 12. As shown in FIG. 4, the tubular body 15 has a two-part structure and is composed of a thick main body portion 15a having a slit S formed therein and a thin cover portion 15b closing the slit S, These are connected with screws. Therefore, the tubular body 15 is detachable,
By removing it, the torque of the torque limiter 13 can be adjusted.

【０００８】前記縦搬送装置１０は、図３に示すよう
に、刈取穀稈の株元側を挟持搬送する株元挟持搬送装置
１０ａと、刈取穀稈の穂先側を係止搬送する穂先係止搬
送装置１０ｂとで成り、株元挟持搬送装置１０ａは突起
付きの無端回動チェーン１６〔搬送チェーンの一例〕に
挟持レール１７を対向させて構成し、穂先係止搬送装置
１０ｂは、無端回動チェーン１８に所定ピッチ毎に起伏
揺動自在に係止爪１９を枢着するとともに、この係止爪
１９の先端通過箇所にガイド杆２０を対向配備して構成
してある。そして、前記挟持レール１７とガイド杆２０
は機体内側から穀稈搬送経路の上方を迂回する状態で略
Ｕ字状に延設されたＵ字杆２１により支持してあり、そ
のうち株元挟持搬送用の挟持レール１７を支持するＵ字
杆２１の先端側部分２２を、搬送作用位置と前記挟持レ
ール１７を前記無端回動チェーン１６から遠ざける後退
位置とに切り換え回動自在に設けてある。詳述すると、
図１に示すように、Ｕ字杆２１に一体連結された支持部
材２３〔基端側部分の一例〕に、前記ガイド杆２０を連
結するとともに、板材をコの字型に形成された前記先端
側部分２２をピン２４を介して回動自在に枢支し、挟持
レール１７を無端回動チェーン１６に向けて弾性付勢す
るバネ２５を内装した支持ケース部２６を前記先端側部
分２２に連結固定してある。又、前記支持部材２３には
前記ピン２４と平行な軸芯Ｘ周りで回動自在にロック部
材２７を枢支し、このロック部材２７に形成した係止凹
部２８が先端側部分２２の下方部に形成した係止ピン２
９に引っ掛かり係合して、搬送作用位置にロック保持す
るよう構成してある。係止凹部２８と係止ピン２９より
成る係合部Ｋは、搬送穀稈の挟持反力に対して係合状態
を維持し且つ前記ロック部材２７のロック解除操作を許
容する状態で形成してある。つまり、穀稈の挟持反力が
挟持レール１７、支持ケース部２６を介して先端側部分
２２に掛かっても、その反力により係止ピン２９が係止
凹部２８に更に係入する方向になるようにしてあり、強
い反力が掛かってもロック部材２７と先端側部分２２と
が剛体として作用することになる。又、ロック部材２７
をロック解除方向〔図２参照〕に回動させると、係止凹
部２８から係止ピン２９が抜け外れる方向に一致するよ
う構成し、穀稈詰まりが発生したような場合には、ロッ
ク部材２７は詰まり穀稈による挟持反力が掛かる方向と
ほぼ同じ方向に回動させることでロックを容易に解除さ
せることができるようにしてある。尚、ロック部材２７
はつる巻きバネ３０によりロック方向に付勢して振動に
よる抜け外れを防止してあり、前記支持ケース部２６内
には、挟持レール１７が穀稈詰まり等に起因して設定量
以上弾性後退すると、そのこと検出するリミットスイッ
チＳＷを内装してあり、このリミットスイッチＳＷが検
出作動すると、エンジンを非常停止させるよう構成して
ある。As shown in FIG. 3, the vertical transfer device 10 comprises a stock holding device 10a for holding and carrying the stock side of the cut grain culm and a tip locking for carrying and carrying the tip side of the cut culm. The stock pinching transfer device 10a is constituted by the endless rotating chain 16 with projections (an example of the transfer chain) and the holding rails 17 facing each other. The tip locking transfer device 10b is endlessly rotated. A locking claw 19 is pivotally attached to the chain 18 so as to be capable of undulating and swinging at a predetermined pitch, and a guide rod 20 is arranged oppositely at a tip passage portion of the locking claw 19. Then, the holding rail 17 and the guide rod 20.
Is supported by a U-shaped rod 21 extending in a substantially U-shape in a state of detouring from above the grain culm transportation route from the inside of the machine body, of which a U-shaped rod supporting a sandwiching rail 17 for stock-base sandwiching transportation. A distal end side portion 22 of 21 is rotatably provided by switching between a conveying operation position and a retracted position where the holding rail 17 is moved away from the endless rotating chain 16. In detail,
As shown in FIG. 1, the guide rod 20 is connected to a support member 23 (an example of a base end side portion) integrally connected to a U-shaped rod 21 and the plate member is formed into a U-shape. The side case 22 is rotatably supported via a pin 24, and a support case section 26 having a spring 25 for elastically biasing the holding rail 17 toward the endless rotation chain 16 is connected to the tip side section 22. It is fixed. Further, a lock member 27 is pivotally supported on the support member 23 so as to be rotatable around an axis X parallel to the pin 24, and a locking recess 28 formed in the lock member 27 is provided below the tip side portion 22. Locking pin 2 formed on
It is configured so as to be hooked and engaged with 9 to be locked and held at the transport operation position. The engaging portion K including the engaging concave portion 28 and the engaging pin 29 is formed in a state in which the engaging state is maintained against the clamping reaction force of the transported grain stem and the unlocking operation of the lock member 27 is allowed. is there. That is, even if the gripping reaction force of the grain stem is applied to the front end side portion 22 via the gripping rail 17 and the support case portion 26, the reaction force causes the locking pin 29 to further engage with the locking recess 28. Thus, even if a strong reaction force is applied, the lock member 27 and the tip side portion 22 act as a rigid body. Also, the lock member 27
Is rotated in the unlocking direction (see FIG. 2), the locking pin 29 is arranged to coincide with the direction in which the locking pin 29 comes off from the locking recess 28, and in the case where grain jamming occurs, the locking member 27 The lock can be easily released by rotating in a direction substantially the same as the direction in which the clamping reaction force from the jammed grain culms is applied. The lock member 27
The spiral winding spring 30 urges the coil spring in the locking direction to prevent it from coming off due to vibration, and when the holding rail 17 is elastically retracted by a predetermined amount or more due to grain jamming or the like in the support case portion 26. A limit switch SW for detecting this is internally provided, and when the limit switch SW detects and operates, the engine is configured to make an emergency stop.

【０００９】尚、特許請求の範囲の項に図面との対照を
容易にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that although reference numerals are given in the claims for facilitating the comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

【図１】ロック部材配設部の正面図FIG. 1 is a front view of a lock member arrangement portion.

【図２】ロック解除状態のロック部材配設部の正面図FIG. 2 is a front view of a lock member disposition portion in an unlocked state.

【図３】縦搬送装置の平面図FIG. 3 is a plan view of a vertical conveyance device.

【図４】筒状体を示す図FIG. 4 is a view showing a tubular body.

【図５】パッカー締付け部の断面図FIG. 5 is a sectional view of a packer tightening portion.

【図６】コンバイン前部の側面図FIG. 6 is a side view of the front part of the combine.

【符号の説明】[Explanation of symbols]

１６ 搬送チェーン １７ 挟持レール ２１ Ｕ字杆 ２２ 先端側部分 ２７ ロック部材 Ｋ 係合部 16 Conveyance Chain 17 Clamping Rail 21 U-shaped Rod 22 Tip Part 27 Lock Member K Engagement Part

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 搬送チェーン（１６）に対向する挟持レ
ール（１７）を穀稈搬送通路を迂回して延出されたＵ字
杆（２１）の先端部に取付けるとともに、前記Ｕ字杆
（２１）の先端側部分（２２）を、搬送作用位置と前記
挟持レール（１７）を前記搬送チェーン（１６）から遠
ざける後退位置とに切り換え回動自在に設けてあるコン
バインの穀稈搬送装置であって、前記Ｕ字杆（２１）の
先端側部分（２２）が搬送作用位置にある状態で係合ロ
ックするロック姿勢と、係合ロックを解除するロック解
除姿勢とに切り換え回動自在なロック部材（２７）を前
記Ｕ字杆（２１）の基端側部分（２３）に枢支し、この
ロック部材（２７）と前記先端側部分（２２）との係合
部（Ｋ）を、搬送穀稈の挟持反力に対して係合状態を維
持し且つ前記ロック部材（２７）のロック解除操作を許
容する状態で形成してあるコンバインの穀稈搬送装置。1. A nipping rail (17) facing a conveyor chain (16) is attached to the tip of a U-shaped rod (21) extending around a grain culm conveying passage, and the U-shaped rod (21) is also provided. (2) is a combine grain culm transporting device which is rotatably provided by switching the leading end side portion (22) to a transport working position and a retracted position where the holding rail (17) is moved away from the transport chain (16). , A locking member that is rotatable to switch between a locking posture in which the end portion (22) of the U-shaped rod (21) is engaged and locked while the distal end portion (22) is in the transport operation position and a locking release posture in which the engagement lock is released ( 27) is pivotally supported on the base end side portion (23) of the U-shaped rod (21), and the engaging portion (K) between the lock member (27) and the tip end side portion (22) is transferred to the transport grain culm. The engaging portion is maintained against the clamping reaction force of the A combine grain culm conveying device formed in a state in which an unlocking operation of the material (27) is allowed.