JPH0678625A - Transmission structure of combine - Google Patents
Transmission structure of combineInfo
- Publication number
- JPH0678625A JPH0678625A JP23545892A JP23545892A JPH0678625A JP H0678625 A JPH0678625 A JP H0678625A JP 23545892 A JP23545892 A JP 23545892A JP 23545892 A JP23545892 A JP 23545892A JP H0678625 A JPH0678625 A JP H0678625A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- output shaft
- constant speed
- rotating body
- transmission
- 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.)
- Pending
Links
Landscapes
- Combines (AREA)
- Harvester Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無段変速装置を備える
とともに、刈取前処理部と走行装置とを所定速度範囲で
は同調しながら変速伝動するコンバインの伝動構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine transmission structure which is equipped with a continuously variable transmission and which transmits gears while the cutting pretreatment section and the traveling device are synchronized in a predetermined speed range.
【０００２】[0002]
【従来の技術】従来、この種のコンバインの伝動構造に
あっては、例えば実開昭５３−２７０３６号公報に開示
されているように、車速が所定速度までは車速と刈取前
処理部とを同調させて変速し、車速がその所定速度より
高速になるがわでは、刈取前処理部の駆動速度を一定速
度に維持するようにしたものが周知である。つまり、車
速が高速のときに刈取前処理部もこれに同調して高速で
駆動すると刈取前処理部の駆動に伴う騒音がきわめて大
きくなるとともに、穀稈の引起し作用や搬送時に穀稈に
作用する力が大きくなって穀粒が脱粒しやすくなる等の
不具合が発生するため、車速が高速でも刈取前処理部で
は一定速度に維持するのである。2. Description of the Related Art Conventionally, in this type of combine transmission structure, as disclosed in, for example, Japanese Utility Model Application Laid-Open No. 53-27036, the vehicle speed and the pre-mowing processing unit are kept until the vehicle speed reaches a predetermined speed. It is well known that the driving speed of the pre-mowing processing unit is maintained at a constant speed in the case where the vehicle speed becomes higher than the predetermined speed by shifting the gears in synchronization with each other. In other words, when the vehicle speed is high and the mowing pretreatment section is driven at a high speed in synchronization with this, the noise accompanying the driving of the mowing pretreatment section becomes extremely large, and the grain stems are raised and the grain stems are acted upon during transportation. Since the force to do so becomes large and the grain becomes easy to be shed, etc., the cutting pretreatment unit maintains a constant speed even if the vehicle speed is high.
【０００３】[0003]
【発明が解決しようとする課題】ところで、従来のコン
バインの伝動構造では、図７に示すように、静油圧式無
段変速装置３１あるいはベルト式無段変速装置をケース
３１ａに内装した状態でミッションケース３２に連結し
て設け、この無段変速装置３１へのエンジン３３からの
入力軸３４導入部とミッションケース３２とは別体構造
にして、又、無段変速装置３１からの変速出力軸３５を
ミッションケース３２へ導入するとともに、その変速出
力軸３５から刈取前処理部３６への伝動系と走行装置３
７への伝動系とに分岐するようにしており、この分岐さ
れた後ミッションケース３２から外部に取り出された刈
取前処理部３６への伝動系に備えた副変速装置３８と、
変速操作具３９とを所定車速以上に操作されると刈取前
処理部３６が一定速度で駆動されるように構成してい
た。このため、上記従来構造においては、刈取前処理部
３６の駆動速度が車速が所定速度以上の高速であるとき
に一定速度となり、車速が所定速度より遅いときは車速
と刈取前処理部３６の駆動速度とを同調変速するための
上記副変速装置３８を無段変速装置３１やミッションケ
ース３２と別に設置する構造であるので、構造的に複雑
であるとともに、その組付けも手間もかかり、伝動構造
としてコンパクトなものでなかった。また、上記従来の
ものにあっては、変速操作具３９の操作の動きの検出に
よって、車速が所定以上になったか否かを検出できるよ
うにし、その検出結果に基づいて前記刈取前処理部３６
への伝動系に介装された副変速装置３８を所定車速以上
では刈取前処理部３６を一定速度で駆動するように維持
し、所定車速より低速では車速と刈取前処理部３６の駆
動速度とを同調するように切り換えるようにしていたの
で、その検出手段やその検出結果に基づいて副変速装置
３８を切換操作する機構が必要であり、この点でも構造
複雑なものであった。本発明は、上記実情に鑑みてなさ
れたものであって、刈取前処理部の駆動速度が車速が所
定速度以上の高速であるときに一定速度となり、車速が
所定速度より遅いときは車速と刈取前処理部の駆動速度
とを同調変速するための構造をコンパクトで組付簡単に
かつ自動的に切換可能なコンバインの伝動構造の提供を
目的とする。By the way, in the conventional combine transmission structure, as shown in FIG. 7, the mission is performed with the hydrostatic type continuously variable transmission 31 or the belt type continuously variable transmission housed in the case 31a. The transmission 32 is provided so as to be connected to the case 32. The introduction portion of the input shaft 34 from the engine 33 to the continuously variable transmission 31 and the transmission case 32 are structured separately, and the transmission output shaft 35 from the continuously variable transmission 31 is provided. Is introduced into the mission case 32, and the transmission system from the variable speed output shaft 35 to the pre-mowing processing unit 36 and the traveling device 3 are installed.
7 and a transmission system 38 for the transmission system to the pre-mowing processing unit 36 that is taken out from the post-transmission case 32 after branching to the auxiliary transmission 38.
When the gear shift operation device 39 is operated at a predetermined vehicle speed or higher, the pre-mowing processing unit 36 is driven at a constant speed. Therefore, in the above-described conventional structure, the drive speed of the pre-mowing processing unit 36 becomes a constant speed when the vehicle speed is higher than a predetermined speed, and the vehicle speed and the pre-mowing processing unit 36 are driven when the vehicle speed is lower than the predetermined speed. Since the auxiliary transmission device 38 for synchronously changing the speed is installed separately from the continuously variable transmission device 31 and the mission case 32, it is structurally complicated and requires a lot of time to assemble the transmission structure. It wasn't as compact as Further, in the above-mentioned conventional one, it is possible to detect whether or not the vehicle speed has become a predetermined speed or more by detecting the movement of the operation of the speed change operation tool 39, and based on the detection result, the pre-mowing processing unit 36.
The auxiliary transmission 38, which is interposed in the transmission system to the vehicle, maintains the pre-mowing processing unit 36 at a constant speed when the vehicle speed is higher than a predetermined vehicle speed. Since it has been so arranged that they are switched in synchronism with each other, it is necessary to have a mechanism for switching the auxiliary transmission device 38 based on the detection means and the detection result, and this is also a complicated structure. The present invention has been made in view of the above circumstances, and when the driving speed of the pre-mowing processing unit is a constant speed when the vehicle speed is higher than a predetermined speed, the vehicle speed and the cutting speed are lower when the vehicle speed is lower than the predetermined speed. It is an object of the present invention to provide a combine transmission structure that is compact and can easily and automatically switch the structure for synchronously shifting the drive speed of the preprocessing unit.
【０００４】[0004]
【課題を解決するための手段】本発明にかかるコンバイ
ンの伝動構造は、上記目的を達成するために、無段変速
装置を内装したケースと、走行装置及び刈取前処理部へ
の伝動機構を内装したミッションケースとを、前記無段
変速装置の出力軸を前記ミッションケース内に導入する
状態で連結し、前記無段変速装置への入力軸を前記ミッ
ションケースを貫く状態で前記出力軸と平行に設けると
ともに、これら入力軸及び出力軸と平行な刈取前処理部
用出力軸を前記ミッションケースに装着し、かつ、前記
入力軸と一定速度比で連動する定速回転体と、前記出力
軸と連動する変速回転体とを、前記ミッションケース内
の前記刈取前処理部用出力軸に遊転状態で装着して、前
記刈取前処理部用出力軸と連動するシフト部材を、前記
定速回転体に連動連結する状態と前記変速回転体に連動
連結する状態とに択一的に切換自在に構成したコンバイ
ンの伝動構造であって、前記シフト部材に対して前記刈
取前処理部用出力軸の回転軸芯周りで遊転自在にかつこ
の回転軸芯方向で一体にシフト可能に外装した筒状カム
部材の前記回転軸芯方向での両側部と、前記変速回転体
及び前記定速回転体との夫々に、前記変速回転体及び前
記定速回転体のうち低速の方のみと筒状カム部材とが同
期して回転することを許す一方向クラッチを介装し、前
記筒状カム部材の前記両側部と、前記変速回転体及び前
記定速回転体との夫々に、前記正転伝動時に前記筒状カ
ム部材の正転回転を許しながら前記変速回転体及び前記
定速回転体のうち回転速度の速い方によって前記筒状カ
ム部材が押圧されて回転速度の遅い方の回転体と前記シ
フト部材とをクラッチ入り状態にするカム機構を設けて
あることを特徴構成とする。かかる特徴構成による作用
・効果は次の通りである。In order to achieve the above object, a combine transmission structure according to the present invention is provided with a case in which a continuously variable transmission is installed, and a transmission mechanism to a traveling device and a cutting pretreatment section. The transmission case and the output shaft of the continuously variable transmission are introduced into the transmission case, and the input shaft to the continuously variable transmission is parallel to the output shaft while penetrating the transmission case. The output shaft for the mowing pretreatment section, which is provided in parallel with the input shaft and the output shaft, is attached to the mission case, and the constant-speed rotating body that works with the input shaft at a constant speed ratio and the output shaft work together. A variable speed rotating body to be mounted on the output shaft for the pre-mowing processing unit in the mission case in a free rotation state, and a shift member interlocking with the output shaft for the pre-mowing processing unit is provided on the constant speed rotating member. Interlocking A transmission structure of a combine configured to be selectively switchable between a connection state and a state in which the variable speed rotating body is interlockingly connected, wherein the rotation shaft core of the output shaft for the pre-mowing processing section is relative to the shift member. Both sides in the direction of the axis of rotation of the tubular cam member which are mounted so as to be freely rotatable around and integrally shiftable in the direction of the axis of rotation, and the variable speed rotary body and the constant speed rotary body, respectively. , A one-way clutch that allows the tubular cam member to rotate synchronously with only the slower one of the speed-changing rotary member and the constant-speed rotary member, and with the both side portions of the tubular cam member. , The faster one of the variable speed rotary body and the constant speed rotary body while permitting the normal rotation of the tubular cam member during forward rotation transmission of the variable speed rotary body and the constant speed rotary body. The cylindrical cam member is pressed by and the rotation speed is slow. Wherein configuration that the rotating body between the Aru and a shift member provided a cam mechanism to clutch engaging state. The operation and effect of this characteristic configuration are as follows.
【０００５】[0005]
【作用】即ち、入力軸と一定速度比で連動する定速回転
体、出力軸と連動する変速回転体及びシフト部材を、ミ
ッションケースに内装して設けているから、予めミッシ
ョンケース内にそれらの部材を組付けた状態にしておい
て、無段変速装置とミッションケースとを連結すること
で刈取前処理部への伝動系とクローラ走行装置への伝動
系との組付けが成されるとともに、所定車速以上では刈
取前処理部を一定速度に維持して駆動する伝動構造が無
段変速装置及びミッションケース以外に設けられるもの
でないので、機体への伝動スペースに余裕が生ずる。ま
た、筒状カム部材は定速回転体と変速回転体とのうち回
転速度の速い方によって押圧されて回転速度の遅い方の
回転体とシフト部材とがクラッチ入り状態になるように
カム機構を設けてあるから、単に２つの回転体の速度の
差異によって走行装置と刈取前処理部とを同調駆動する
状態と刈取前処理部を一定速度で駆動する状態との切換
を自動的に行うことができる。In other words, since the constant-speed rotating body that interlocks with the input shaft at a constant speed ratio, the variable speed rotating body that interlocks with the output shaft, and the shift member are internally provided in the mission case, they are previously provided in the mission case. With the members assembled, by connecting the continuously variable transmission and the transmission case to each other, the transmission system to the reaping pretreatment unit and the transmission system to the crawler traveling device are assembled, and At a speed equal to or higher than a predetermined vehicle speed, a transmission structure for driving the pre-mowing processing unit while maintaining a constant speed is provided only in the continuously variable transmission and the transmission case, so that a space for transmission to the machine body is provided. In addition, the tubular cam member is pressed by the one of the constant speed rotating body and the variable speed rotating body having the higher rotation speed, and the cam mechanism is arranged so that the rotating body having the lower rotation speed and the shift member are in the clutch engagement state. Since it is provided, it is possible to automatically switch between a state in which the traveling device and the mowing pretreatment unit are synchronously driven and a state in which the mowing pretreatment unit is driven at a constant speed simply by the difference in speed between the two rotating bodies. it can.
【０００６】[0006]
【発明の効果】従って、入力軸と一定速度比で連動する
定速回転体、出力軸と連動する変速回転体及びシフト部
材等の、刈取前処理部の駆動速度が車速が所定速度以上
の高速であるときに一定速度となり、車速が所定速度よ
り遅いときは車速と刈取前処理部の駆動速度とを同調変
速するための構造をミッションケース内に備えるように
して、無段変速装置とミッションケースとを連結するこ
とで簡単に走行装置への伝動系と刈取前処理部への伝動
系とを組付けることができるから、製作が簡易なものに
できるとともに、機体への伝動スペースに余裕ができる
ように伝動構造をコンパクトにできる。また、走行装置
と刈取前処理部とを同調駆動する状態と刈取前処理部を
一定速度で駆動する状態との切換を自動的に行うことが
できるから、所定の車速を検出する手段や人為的に切換
操作する手段は不要にできて構造簡単にできるととも
に、切換操作する煩わしさも解消できる。Therefore, the drive speed of the pre-mowing processing unit such as the constant speed rotating body which operates in conjunction with the input shaft at a constant speed ratio, the variable speed rotating body which operates in conjunction with the output shaft, the shift member, etc. is high when the vehicle speed is a predetermined speed or more. When the vehicle speed is slower than the predetermined speed, the structure for shifting the vehicle speed and the drive speed of the pre-mowing processing unit in synchronization is provided in the mission case to provide a continuously variable transmission and the mission case. By connecting and, it is possible to easily assemble the transmission system to the traveling device and the transmission system to the pre-cutting processing section, which simplifies the manufacturing process and leaves room for the transmission space to the machine body. Thus, the transmission structure can be made compact. Further, since it is possible to automatically switch between a state in which the traveling device and the mowing pretreatment unit are synchronously driven and a state in which the mowing pretreatment unit is driven at a constant speed, a means for detecting a predetermined vehicle speed and an artificial The means for switching operation can be eliminated and the structure can be simplified, and the troublesomeness of switching operation can be eliminated.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図６に、コンバインを示している。このコンバイ
ンは、左右一対のクローラ走行装置１，１に支持された
機体フレーム２に、脱穀装置３、操縦部４、穀粒貯留回
収装置５等を搭載装備するとともに、機体フレーム２の
前部に横軸芯周りで上下揺動自在に刈取前処理部６を装
着して構成してある。Embodiments of the present invention will be described below with reference to the drawings. The combine is shown in FIG. This combine is equipped with a threshing device 3, a control unit 4, a grain storage and collection device 5, etc. on a machine body frame 2 supported by a pair of left and right crawler traveling devices 1, 1 and at the front of the machine body frame 2. A cutting pretreatment unit 6 is attached so as to be vertically swingable around a horizontal axis.
【０００８】そして、図１に、このコンバインの伝動構
造の概略を示している。図１に示すように、機体フレー
ム２に搭載したエンジン７からベルト伝動された動力
は、ミッションケース８に回動可能に装着された入力軸
９に伝達され、更に、ミッションケース８に連結固定し
たケース１０ａに内装した静油圧式の無段変速装置１０
の油圧ポンプＰに連動連結されており、無段変速装置１
０の油圧モータＭに連動連結した出力軸１１は、ミッシ
ョンケース８内に導入する状態で装着している。前記入
力軸９と出力軸１１とは平行配置されており、これら入
力軸９と出力軸１１との間に刈取前処理部６へ動力出力
するための刈取前処理部用出力軸１２を入力軸９及び出
力軸１１と平行に配設した状態でミッションケース８に
装着している。ミッションケース８内の入力軸９には第
１ギア１３が一体回動するように設けられているととも
に、この第１ギア１３と歯合される定速回転体としての
第２ギア１４を刈取前処理部用出力軸１２に遊転可能に
装着している。一方、出力軸１１には第３ギア１５が一
体回動するように設けられているとともに、この第３ギ
ア１５と歯合される変速回転体としての第４ギア１６を
刈取前処理部用出力軸１２に遊転可能に装着している。
また、第３ギア１５には、ミッションケース８に内装し
たギア式副変速機構１７の伝動ギア１８が歯合してお
り、このギア式副変速機構１７及び操向用クラッチ機構
１９を介して動力がクローラ走行装置１，１へ伝達され
るようにしている。FIG. 1 shows an outline of the power transmission structure of this combine. As shown in FIG. 1, the power transmitted by the belt from the engine 7 mounted on the body frame 2 is transmitted to the input shaft 9 rotatably mounted on the mission case 8 and further fixed to the mission case 8. Hydrostatic stepless transmission 10 housed in the case 10a
Of the continuously variable transmission 1
The output shaft 11 linked to the hydraulic motor M of No. 0 is mounted in a state of being introduced into the mission case 8. The input shaft 9 and the output shaft 11 are arranged in parallel with each other, and the input shaft 9 and the output shaft 11 are provided between the input shaft 9 and the output shaft 11, and the output shaft 12 for the pre-cutting unit for outputting power to the pre-cutting unit 6 is input shaft. It is mounted on the mission case 8 in a state of being arranged in parallel with the output shaft 9 and the output shaft 11. A first gear 13 is provided on the input shaft 9 in the transmission case 8 so as to rotate integrally, and a second gear 14 as a constant speed rotating body meshed with the first gear 13 is provided before cutting. It is mounted on the output shaft 12 for the processing unit so as to be freely rotatable. On the other hand, a third gear 15 is provided on the output shaft 11 so as to rotate integrally with the output shaft 11, and a fourth gear 16 as a variable speed rotating body meshed with the third gear 15 is provided to the cutting pretreatment section. The shaft 12 is mounted so as to be freely rotatable.
A transmission gear 18 of a gear type auxiliary transmission mechanism 17 installed in the transmission case 8 meshes with the third gear 15, and power is transmitted via the gear type auxiliary transmission mechanism 17 and the steering clutch mechanism 19. Are transmitted to the crawler traveling devices 1 and 1.
【０００９】そして、図１及び図２に示すように、第２
ギア１４と第４ギア１６との間には、刈取前処理部用出
力軸１２にその軸芯方向でシフト操作自在にスプライン
嵌合したシフト部材２０を設けているとともに、このシ
フト部材２０のシフト方向の両端部の夫々と前記第２ギ
ア１４、第４ギア１６の夫々とで正転方向で噛み合い自
在にドッグクラッチ２１Ａ，２１Ｂを構成している。そ
して、シフト部材２０のシフト操作によりドッグクラッ
チ２１Ａ，２１Ｂのうち一方のみ選択して入り操作され
るように、第２ギア１４、第４ギア１６及びシフト部材
２０を配設している。更に、シフト部材２０の外周部に
は、ベアリング２２，２２を介して筒状カム部材２３を
外嵌しているとともに、この筒状カム部材２３は、刈取
前処理部用出力軸１２の軸芯方向で肉厚を大きくとった
前記第２ギア１４及び第４ギア１６の外周面にその両端
部が摺接する状態に構成している。図２乃至図４に示す
ように、筒状カム部材２３の両端部の内周面に形成した
凹入部２４と、第２ギア１４及び第４ギア１６の夫々に
穿設した穴２５に内装したスプリング２６で外方に向け
て付勢されたボール２７とで一方向クラッチ２８が構成
されており、凹入部２７は、第２ギア１４、第４ギア１
６から筒状カム部材２３へボール２７を介して、第２ギ
ア１４と第４ギア１６とのうち前記ドッグクラッチ２１
Ａ，２１Ｂで入り状態となった低速の方のみ筒状カム部
材２３と同期しての回転を許し、他方の高速の方のギア
は筒状カム部材２３に対して空回り状態となるように構
成している。更に、図２に示すように、筒状カム部材２
３の、第２ギア１４と第４ギア１６との夫々に前記ドッ
グクラッチ２１Ａ，２１Ｂを設けた内側面部、つまり第
２ギア１４と第４ギア１６とが相対向する内側面部の外
周近くに周方向に沿って緩やかに筒状カム部材２３がわ
に近接する傾斜カム面２９ａ，２９ａを設け、一方、筒
状カム部材２３の前記軸芯方向での両端部の前記第２ギ
ア１４及び第４ギア１６の傾斜カム面２９ａ，２９ａと
相対向する位置には、その傾斜カム面２９ａ，２９ａに
接触案内可能な傾斜カム面２９ｂ，２９ｂを形成してい
る。これら相対向する状態に設けた傾斜カム面２９ａ，
２９ｂによって、カム機構２９が構成されている。Then, as shown in FIG. 1 and FIG.
Between the gear 14 and the fourth gear 16, there is provided a shift member 20 spline-fitted to the cutting pretreatment unit output shaft 12 so as to be shift-operable in the axial direction thereof, and the shift member 20 is shifted. The dog clutches 21A and 21B are configured so that the two end portions in the direction and the second gear 14 and the fourth gear 16 can be meshed in the forward rotation direction. The second gear 14, the fourth gear 16, and the shift member 20 are arranged so that only one of the dog clutches 21A and 21B is selected and engaged by the shift operation of the shift member 20. Further, a cylindrical cam member 23 is externally fitted to the outer peripheral portion of the shift member 20 via bearings 22, 22, and the cylindrical cam member 23 serves as the shaft center of the output shaft 12 for the cutting pretreatment unit. Both ends of the second gear 14 and the fourth gear 16, which have a large thickness in the direction, are in sliding contact with the outer peripheral surfaces thereof. As shown in FIGS. 2 to 4, the cylindrical cam member 23 is internally provided in the recessed portions 24 formed on the inner peripheral surfaces of both ends thereof and the holes 25 formed in the second gear 14 and the fourth gear 16, respectively. A one-way clutch 28 is configured with the ball 27 biased outward by the spring 26, and the recessed portion 27 includes the second gear 14 and the fourth gear 1.
6 to the tubular cam member 23 via the ball 27, the dog clutch 21 of the second gear 14 and the fourth gear 16
Only the low speed side that is in the engaged state at A and 21B is allowed to rotate in synchronization with the tubular cam member 23, and the other high speed gear is idle with respect to the tubular cam member 23. is doing. Further, as shown in FIG. 2, the tubular cam member 2
3, the second gear 14 and the fourth gear 16 are respectively provided with the dog clutches 21A and 21B, that is, the inner side surface portion, that is, the second gear 14 and the fourth gear 16 face each other. The inclined cam surfaces 29a, 29a are provided so that the tubular cam member 23 gradually comes close to the ridge along the direction, while the second gear 14 and the fourth gear 14 at the both ends of the tubular cam member 23 in the axial direction are provided. At positions of the gear 16 which are opposed to the inclined cam surfaces 29a, 29a, inclined cam surfaces 29b, 29b capable of being contact-guided to the inclined cam surfaces 29a, 29a are formed. The inclined cam surfaces 29a provided so as to face each other,
The cam mechanism 29 is configured by 29b.
【００１０】上記構成によれば、筒状カム部材２３は、
その両端部のカム機構２９，２９における傾斜カム面２
９ｂ，２９ｂが第２ギア１４と第４ギア１６とのうち回
転速度の速い方の傾斜カム面２９ａによって押圧される
ので、第２ギア１４と第４ギア１６とのうち回転速度の
遅い方のギアとシフト部材２０とがドッグクラッチ２１
Ａ又は２１Ｂで入り状態となり、刈取前処理部用出力軸
１２は、第２ギア１４と第４ギア１６とのうち回転速度
の遅い方のギアからの伝動で駆動されることになる。す
なわち、第２ギア１４と第４ギア１６とのうち回転速度
の速い方の傾斜カム面２９ａは遅い方の傾斜カム面２９
ａよりも筒状カム部材２３がわの傾斜カム面２９ｂ，２
９ｂを速度が速いため優先的に押圧するからである。従
って、図５にグラフとして示すように、エンジン７の出
力速度に対して一定の速度比となって伝動される第２ギ
ア１４の駆動速度よりも低速で第４ギア１６が駆動され
ている場合は、刈取前処理部用出力軸１２は無段変速装
置１０で変速された動力で駆動されることになり、よっ
て、クローラ走行装置１，１と刈取前処理部６とがその
駆動速度が同調するように駆動され、一方、第２ギア１
４の駆動速度よりも第４ギア１６の方が高速駆動される
場合は、刈取前処理部用出力軸１２は第２ギア１４から
の伝動で駆動されることになり、よって、クローラ走行
装置１，１の駆動速度に関係なく一定速度で刈取前処理
部６が駆動されることになる。According to the above construction, the cylindrical cam member 23 is
Inclined cam surfaces 2 in the cam mechanisms 29, 29 at both ends thereof
Since 9b and 29b are pressed by the inclined cam surface 29a of the second gear 14 and the fourth gear 16 which has a higher rotational speed, the inclined gear surface 29a of the second gear 14 and the fourth gear 16 has a lower rotational speed. The gear and the shift member 20 are the dog clutch 21.
The input state is A or 21B, and the pre-mowing processing unit output shaft 12 is driven by the transmission from the gear having the slower rotation speed of the second gear 14 and the fourth gear 16. That is, of the second gear 14 and the fourth gear 16, the inclined cam surface 29a having the faster rotation speed is the inclined cam surface 29 having the lower rotation speed.
The inclined cam surfaces 29b, 2 of which the tubular cam member 23 is formed more than a
This is because 9b is preferentially pressed because of its high speed. Therefore, as shown in the graph of FIG. 5, when the fourth gear 16 is driven at a speed lower than the drive speed of the second gear 14 which is transmitted at a constant speed ratio with respect to the output speed of the engine 7. Means that the output shaft 12 for the mowing pretreatment section is driven by the power that has been changed by the continuously variable transmission device 10, so that the driving speeds of the crawler traveling devices 1, 1 and the mowing pretreatment section 6 are synchronized. The second gear 1
When the fourth gear 16 is driven at a higher speed than the driving speed of 4, the cutting pretreatment section output shaft 12 is driven by the transmission from the second gear 14, and thus the crawler traveling device 1 , 1, the cutting pretreatment unit 6 is driven at a constant speed regardless of the driving speed.
【００１１】本発明は次のように実施しても良い。 （イ）無段変速装置を、ベルト式無段変速装置で構成す
ること。 （ロ）定速回転体や変速回転体を、ギアでなくチェーン
伝動用のスプロケットで構成すること。The present invention may be implemented as follows. (A) The continuously variable transmission should be a belt type continuously variable transmission. (B) The constant speed rotating body and variable speed rotating body should be composed of sprockets for chain transmission instead of gears.
【００１２】尚、特許請求の範囲の項に図面との対照を
便利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 convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.
【図１】コンバインの伝動構造を示す概略説明図FIG. 1 is a schematic explanatory view showing a power transmission structure of a combine.
【図２】要部を示す断面図FIG. 2 is a cross-sectional view showing a main part
【図３】筒状カム部材と変速回転体並びに定速回転体と
の間の一方向クラッチを示す縦断面図（イ），（ハ）、
及び、筒状カム部材、変速回転体、定速回転体を示す展
開断面図（ロ）FIG. 3 is a vertical sectional view (a), (c) showing a one-way clutch between the tubular cam member and the variable speed rotating body and the constant speed rotating body.
Also, a developed sectional view showing the tubular cam member, the variable speed rotating body, and the constant speed rotating body (b).
【図４】筒状カム部材と変速回転体並びに定速回転体と
の間の一方向クラッチを示す縦断面図（イ），（ハ）、
及び、筒状カム部材、変速回転体、定速回転体を示す展
開断面図（ロ）FIG. 4 is a vertical sectional view (a), (c) showing a one-way clutch between the tubular cam member and the variable speed rotating body and the constant speed rotating body.
Also, a developed sectional view showing the tubular cam member, the variable speed rotating body, and the constant speed rotating body (b).
【図５】走行スピード（車速）と刈取搬送スピード（刈
取前処理部の駆動速度）との関係を示すグラフFIG. 5 is a graph showing the relationship between the traveling speed (vehicle speed) and the mowing transport speed (driving speed of the pre-mowing processing unit).
【図６】コンバインを示す全体側面図FIG. 6 is an overall side view showing the combine.
【図７】従来例としてのコンバインの伝動構造を示す概
略説明図FIG. 7 is a schematic explanatory view showing a power transmission structure of a combine as a conventional example.
１ 走行装置 ６ 刈取前処理部 ８ ミッションケース ９ 入力軸 １０ 無段変速装置 １０ａ ケース １１ 出力軸 １２ 刈取前処理部用出力軸 １４ 定速回転体 １６ 変速回転体 ２０ シフト部材 ２３ 筒状カム部材 ２８ 一方向クラッチ ２９ カム機構 DESCRIPTION OF SYMBOLS 1 Traveling device 6 Mowing pretreatment unit 8 Mission case 9 Input shaft 10 Continuously variable transmission device 10a Case 11 Output shaft 12 Mowing pretreatment unit output shaft 14 Constant speed rotating body 16 Shifting rotating body 20 Shift member 23 Cylindrical cam member 28 One-way clutch 29 Cam mechanism
Claims (1)
（１０ａ）と、走行装置（１）及び刈取前処理部（６）
への伝動機構を内装したミッションケース（８）とを、
前記無段変速装置（１０）の出力軸（１１）を前記ミッ
ションケース（８）内に導入する状態で連結し、 前記無段変速装置（１０）への入力軸（９）を前記ミッ
ションケース（８）を貫く状態で前記出力軸（１１）と
平行に設けるとともに、 これら入力軸（９）及び出力軸（１１）と平行な刈取前
処理部用出力軸（１２）を前記ミッションケース（８）
に装着し、 かつ、前記入力軸（９）と一定速度比で連動する定速回
転体（１４）と、前記出力軸（１１）と連動する変速回
転体（１６）とを、前記ミッションケース（８）内の前
記刈取前処理部用出力軸（１２）に遊転状態で装着し
て、 前記刈取前処理部用出力軸（１２）と連動するシフト部
材（２０）を、前記定速回転体（１４）に連動連結する
状態と前記変速回転体（１６）に連動連結する状態とに
択一的に切換自在に構成したコンバインの伝動構造であ
って、 前記シフト部材（２０）に対して前記刈取前処理部用出
力軸（１２）の回転軸芯周りで遊転自在にかつこの回転
軸芯方向で一体にシフト可能に外装した筒状カム部材
（２３）の前記回転軸芯方向での両側部と、前記変速回
転体（１６）及び前記定速回転体（１４）との夫々に、
前記変速回転体（１６）及び前記定速回転体（１４）の
うち低速の方のみと筒状カム部材（２３）とが同期して
回転することを許す一方向クラッチ（２８）を介装し、 前記筒状カム部材（２３）の前記両側部と、前記変速回
転体（１６）及び前記定速回転体（１４）との夫々に、
前記正転伝動時に前記筒状カム部材（２３）の正転回転
を許しながら前記変速回転体（１６）及び前記定速回転
体（１４）のうち回転速度の速い方によって前記筒状カ
ム部材（２３）が押圧されて回転速度の遅い方の回転体
（１６），（１４）と前記シフト部材（２０）とをクラ
ッチ入り状態にするカム機構（２９），（２９）を設け
てあるコンバインの伝動構造。1. A case (10a) in which a continuously variable transmission (10) is installed, a traveling device (1) and a pre-cutting processing section (6).
The mission case (8) with the power transmission mechanism to
The output shaft (11) of the continuously variable transmission (10) is connected so as to be introduced into the mission case (8), and the input shaft (9) to the continuously variable transmission (10) is connected to the mission case (8). 8) is provided in parallel with the output shaft (11) in a state of penetrating the same, and the output shaft (12) for the pre-cutting section which is parallel to the input shaft (9) and the output shaft (11) is provided in the mission case (8).
A constant speed rotor (14) that is mounted on the input shaft (9) at a constant speed ratio and a variable speed rotor (16) that operates at the output shaft (11). 8) is mounted on the output shaft (12) for the pre-cutting section in a free rotation state, and the shift member (20) interlocking with the output shaft (12) for the pre-cutting section is attached to the constant speed rotary body. A transmission structure of a combine configured to be selectively switchable between a state in which it is interlocked with (14) and a state in which it is interlocked with the variable speed rotating body (16). Both sides of the cylindrical cam member (23), which is mounted so as to be freely rotatable around the rotation axis of the output shaft (12) for the mowing pretreatment section and to be integrally shiftable in the rotation axis direction, in the rotation axis direction. And the variable speed rotating body (16) and the constant speed rotating body (14), respectively.
A one-way clutch (28) that allows only the lower speed of the variable speed rotating body (16) and the constant speed rotating body (14) and the tubular cam member (23) to rotate in synchronization is interposed. , Each of the both sides of the tubular cam member (23) and the variable speed rotating body (16) and the constant speed rotating body (14),
While permitting the normal rotation of the tubular cam member (23) during the forward rotation transmission, the tubular cam member (16) and the constant speed rotor (14), which have a higher rotational speed, allow the tubular cam member (23) to rotate. 23) of the combine machine provided with cam mechanisms (29) and (29) for pressing the rotating bodies (16) and (14) having a lower rotation speed and the shift member (20) into a clutched state. Transmission structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23545892A JPH0678625A (en) | 1992-09-03 | 1992-09-03 | Transmission structure of combine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23545892A JPH0678625A (en) | 1992-09-03 | 1992-09-03 | Transmission structure of combine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0678625A true JPH0678625A (en) | 1994-03-22 |
Family
ID=16986403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23545892A Pending JPH0678625A (en) | 1992-09-03 | 1992-09-03 | Transmission structure of combine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0678625A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009232784A (en) * | 2008-03-27 | 2009-10-15 | Kubota Corp | Reaping transmission |
| WO2015045631A1 (en) * | 2013-09-27 | 2015-04-02 | 株式会社クボタ | Work machine and combine |
| JP2015065876A (en) * | 2013-09-27 | 2015-04-13 | 株式会社クボタ | Combine |
| WO2019172129A1 (en) * | 2018-03-08 | 2019-09-12 | 株式会社クボタ | Harvester |
| US11628516B2 (en) | 2018-10-19 | 2023-04-18 | Futaba Industrial Co., Ltd. | Welding method |
-
1992
- 1992-09-03 JP JP23545892A patent/JPH0678625A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009232784A (en) * | 2008-03-27 | 2009-10-15 | Kubota Corp | Reaping transmission |
| WO2015045631A1 (en) * | 2013-09-27 | 2015-04-02 | 株式会社クボタ | Work machine and combine |
| JP2015065876A (en) * | 2013-09-27 | 2015-04-13 | 株式会社クボタ | Combine |
| CN109937683A (en) * | 2013-09-27 | 2019-06-28 | 株式会社久保田 | Working rig and combine harvester |
| CN109937683B (en) * | 2013-09-27 | 2020-11-03 | 株式会社久保田 | Combine harvester |
| WO2019172129A1 (en) * | 2018-03-08 | 2019-09-12 | 株式会社クボタ | Harvester |
| US11628516B2 (en) | 2018-10-19 | 2023-04-18 | Futaba Industrial Co., Ltd. | Welding method |
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