JPS61122081A - Structure of traveling transmission for working vehicle - Google Patents

Structure of traveling transmission for working vehicle

Info

Publication number
JPS61122081A
JPS61122081A JP24549184A JP24549184A JPS61122081A JP S61122081 A JPS61122081 A JP S61122081A JP 24549184 A JP24549184 A JP 24549184A JP 24549184 A JP24549184 A JP 24549184A JP S61122081 A JPS61122081 A JP S61122081A
Authority
JP
Japan
Prior art keywords
differential
lock mechanism
differential lock
steering
steering clutches
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
Application number
JP24549184A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Fujiki
藤木　弘義
Hiroshi Otsubo
大坪　寛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP24549184A priority Critical patent/JPS61122081A/en
Publication of JPS61122081A publication Critical patent/JPS61122081A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/08—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using brakes or clutches as main steering-effecting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)

Abstract

PURPOSE:To reduce a radius of turning by linking a differential axis of a differential gear, steering clutch, brake and an interlocking type differential lock mechanism. CONSTITUTION:The differential axis of a differential gear E is connected in linkage to left and right axles 5 through steering clutches 8. Further, in linkage to a disconnecting operation by either of the steering clutches 8, an interlocking type differential lock mechanism 7 is put in differential lock operation. Furthermore, by equipping a linking mechanism with elasticity, between the steering clutch 8 and the differential lock mechanism 7 disconnecting operation of the steering clutch 8 and brake operation of a brake 20 are realized in a condition where the differential lock mechanism is not interlocking.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、四輪駆動型作業車（関し、主として、田植機
のように、比較的軟弱な地面を走行することの多い車体
に５Ｎ備される走行駆動構造Ｋｌｌする。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a four-wheel drive working vehicle (mainly a vehicle equipped with 5N on a vehicle body that often travels on relatively soft ground, such as a rice transplanter). The traveling drive structure Kll is used.

〔従来の技術〕[Conventional technology]

従来、軟弱地面を走行する作業車の一例である田植機の
走行駆動構造として以下（示す２種の構成が多く知られ
ている。Conventionally, the following two types of configurations have been known as traveling drive structures for rice transplanters, which are examples of work vehicles that travel on soft ground.

その第１の構成とは、前後車輪とも差動装置を介して駆
動すると共に、後車輪忙左右２つのサイドブレーキを設
けたものであり（例えば実開昭５６−１１１３５２号公
報）、又、第２の構成とは前車輪を差動装置を介して駆
動し、更に後車輪を左右２つの操向クラッチを介して駆
動するものである（例えば実開昭５８−１０７９３０号
公報）。The first configuration is one in which both the front and rear wheels are driven via a differential device, and two side brakes are provided for the left and right rear wheels (for example, Utility Model Application No. 56-111352). In the configuration No. 2, the front wheels are driven via a differential device, and the rear wheels are further driven via two left and right steering clutches (for example, see Japanese Utility Model Application Publication No. 107930/1983).

〔発明が解決しよりとする問題点〕[Problems that the invention is supposed to solve]

＄１の構成のものでは、後車輪の駆＃を差動装置を介し
て行うため路上での車体旋回が円滑に行える反面−１湿
田等軟弱な地面での急旋回時には片側のブレーキを作幼
させる之め、他方側の１輪が倍速で駆動されることにな
り、この車輪がスリップして推進力が不足になる場合が
あった。With the $1 configuration, the rear wheels are driven via a differential, allowing the vehicle to turn smoothly on the road. As a result, one wheel on the other side is driven at twice the speed, and this wheel sometimes slips, resulting in insufficient propulsive force.

又、第２の構成のものでは、旋回内側の操向クラッチを
切り操作して内側車輪を停止させ、外側車輪を所定の低
速度で駆動することで内側車輪を中心として旋回が行え
るため、前述の車輪のスリップが解消される反面、路走
行時に於て、操向車輪だけで車体を旋回させ九場合（は
、左右後車輪が夫々等速で駆動されていること忙起因し
て片側の後車輪がスリップ状態になり円滑な旋回が行い
にくくなることがあった。In addition, in the second configuration, the steering clutch on the inside of the turn is disengaged to stop the inside wheel and the outside wheel is driven at a predetermined low speed, so that the turn can be made around the inside wheel. On the other hand, when driving on the road, when the vehicle body is turned using only the steering wheel (9), the left and right rear wheels are driven at the same speed. The wheels sometimes slipped, making it difficult to turn smoothly.

本発明は上記実情に鑑みて為され友ものであって、前記
し之２構成の長所を生かすと共に、軟弱地面では確実な
小回り旋回が行え、又、路上では円滑な旋回が生える走
行伝動構造を操作性良好に構成して提供する点く目的を
有する。The present invention has been made in view of the above circumstances, and in addition to making use of the advantages of the above-mentioned two configurations, it also provides a traveling transmission structure that enables reliable small turns on soft ground and smooth turns on the road. The purpose is to provide a structure with good operability.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の特徴は、差動装置の差動軸と左右車軸とを操向
クラッチを介して連動連結するとともに、クラッチ切り
操作に引続く一連の操作で左右車軸のブレーキを制動作
動させるよう構成し、前記操向クラッチのいづれかの切
り作動に連動して差動装置に備え九咬会式デフロック機
構をデフロックｆ１”幼させるように構成するとともに
、前記横向クラッチと前記デフロック機構との連係機構
中に弾性融通を装備゛して、デフロック機構の非咬合状
態で操向クラッチののり操作及びブＶ−キの制動操作を
可能（構成した点にあり、その作用、支び効果は次の通
りである。A feature of the present invention is that the differential shaft of the differential gear and the left and right axles are interlocked and connected via a steering clutch, and the brakes of the left and right axles are actuated by a series of operations following the clutch disengagement operation. , a nine-bit type differential lock mechanism provided in the differential gear is configured to reduce the differential lock f1'' in conjunction with the disengagement of any one of the steering clutches, and a linkage mechanism between the transverse clutch and the differential lock mechanism is configured. Equipped with elastic flexibility, it is possible to operate the steering clutch and brake the brake V-key when the differential lock mechanism is not engaged. .

〔作用〕[Effect]

つまり、上記の如く、差動装置の差動軸、操向クラッチ
、ブレーキ、咬合式デフロック機構を連係したため、該
走行伝動構造を四輪駆動型作業車の後車輪に適用して、
一方の操向クラッチを１７Ｊり操作すると、この操作と
同時に、この側の車輪が停止し、この車輪を中心とした
小さな半径での旋回が可能となり、しかも、前記操作と
同時にデフａツク機構もデフａツク作＃ゼ態にできる念
め、他方の車輪を所定速度で駆動して、推進力を低下さ
せることなく旋回が行える。In other words, as mentioned above, since the differential shaft of the differential gear, the steering clutch, the brake, and the interlocking differential lock mechanism are linked, the traveling transmission structure is applied to the rear wheels of the four-wheel drive type work vehicle.
When one steering clutch is operated by 17J, the wheels on this side stop at the same time as this operation, making it possible to turn in a small radius around this wheel. Moreover, at the same time as the above operation, the differential mechanism is also activated. In order to ensure that the differential is in the active state, the other wheel is driven at a predetermined speed so that turning can be performed without reducing the propulsion force.

又、デフロック機構が弾性融通を介してデフロック作動
側への操作が為されるなめ、操向クラッチの切り操作の
時点デフロック機構が、その機構内の咬合爪等が咬合不
可能な位相であっても、位相が合致した時点でデフロッ
ク作動状態になる。　つまり、操作クラッチの切り操作
と時間のずれを生じる場合もあるが、必ずデフロック作
動状態には設定できるのである。In addition, since the differential lock mechanism is operated to the differential lock activation side through elastic flexibility, the differential lock mechanism is in a phase in which the engaging claws, etc. in the mechanism cannot engage at the time of the steering clutch disengagement operation. The differential lock is activated when the phases match. In other words, although there may be a time lag with the disengagement of the operating clutch, the differential lock can always be set to the operating state.

又、前述の如く、操向クラッチの切り操作の時点で、デ
フロック機構が非作動状態であっても、操作クラッチと
デフロック機構の連係中く弾性融通を介装しである次め
、前記咬合爪等の位相に関係なく任意のタイミングで操
向クラッチののり操作が行えるのである。Further, as described above, even if the differential lock mechanism is in the inactive state at the time of disengaging the steering clutch, the engaging pawl can The steering clutch can be operated at any timing regardless of the phase of the steering clutch.

〔発明の効果〕〔Effect of the invention〕

従って、操向クラッチ、ブレーキ、デフロック機構を連
係し、又、デフロック機構が咬合式である（拘わらず、
操向クラッチ切り操作時点で少なくとも片かの操向クラ
ッチを切って、その側の車輪駆動を止めての旋回状態を
得ることができ、デフロック機構の咬合位相を合わす九
めに操向クラッチの切りタイミングが遅れることがなく
、旋回操作に応じ九適確な機体旋回が行える。　　− 〔実施例〕 以下、本発明の実施例を図面に基づいて説明するＯ 第２図に示すように、前部にエンジンｆｌｌを搭載する
と共に、中央部にステアリングツ翫ンド「しく２）、座
席（３）で成る運転部ＩＡＩを形成した機体を左右操向
用前車輪（４）、（４）、及び左右非操向用後車輪（５
１、＋５１で駆動走行可能に構成し、更に、機体後端に
リンク機構（６）を介して多条植用萌植付装置ＩＢ＋を
昇降可能に連結して、四輪駆動型作業車の一例として乗
用田植機が構成されている。Therefore, the steering clutch, brake, and differential lock mechanism are linked, and the differential lock mechanism is an interlocking type (regardless of the
When the steering clutch is disengaged, at least one of the steering clutches is disengaged to obtain a turning state by stopping the wheel drive on that side. There is no timing delay and the aircraft can turn accurately in response to turning operations. - [Embodiment] Hereinafter, an embodiment of the present invention will be described based on the drawings. The aircraft body forming the driving part IAI consisting of the seat (3) is divided into front wheels (4) for left/right steering, and rear wheels (5) for left/right non-steering.
1. An example of a four-wheel drive working vehicle configured to be able to drive and run with +51, and further, a multi-row transplanting device IB+ is connected to the rear end of the machine body via a link mechanism (6) so that it can be raised and lowered. The riding rice transplanter is configured as follows.

同図、及び第１図に示すように、該田植機では、エンジ
ンｆ１＋からの出力が、走行変速装置＋Ｃ１、差動装置
ｆＤｌを介して前車輪＋４１　、　＋４１に伝えられ、
同じく、エンジンｆｉ＋からの出力が、走行変速装（ｆ
ｆｔｃ＋　、デフロック機構（７）付きの差動装置（Ｅ
）、左右の操向クラッチ（ｓｌ　ｒ　（ａｔ　を介して
後車輪（５＋　、　（５＋に伝えられるよう、走行駆動
系が構成されている。As shown in the same figure and FIG. 1, in the rice transplanter, the output from the engine f1+ is transmitted to the front wheels +41 and +41 via the traveling transmission +C1 and the differential fDl,
Similarly, the output from the engine fi+ is transmitted to the traveling transmission (f
ftc+, differential gear (E) with differential lock mechanism (7)
), and the left and right steering clutches (sl r (at) to the rear wheels (5+, (5+).

第１図及び第３図（示すように、前記デフロック機構（
７）付きの差動装置（鱒は、前記走行変速装置１ｃ）の
出力軸（９）に取付けたベベーレギャ（ｌＯ）、このベ
ベ？レギャ叫に咬合するリングギヤ（ロ）、リングギヤ
（ロ）が取付けられた筒状のデフケース＠、デフケース
（２）の細心ＩＰＩに直交する細心で回動可能にデフケ
ース（２）内に軸支したデフピニオンギヤ（２）、ａ３
デフゲース（６）の軸心ＩＰＩで回動可能に内嵌した筒
状のデフサイドギヤ（至）、（ロ）、及びデフケース（
６）の細心ｔｐ）に設けた支軸（ト）で構成され、デフ
サイドギヤα４．（至）そのものが差動軸に兼用されて
いる。　そして、デフサイドギヤα４．α力の外端には
夫々、前記軸心ＩＰＩに対し放射状に咬合爪（１４ａ）
　、　（１４ａ）が突出形成され、左右の後車輪（６）
、（５）の車軸（ト）、（至）にスプライン嵌合するス
リーブ（８ｍ）、（８ａ）の咬合爪（８ｂ）　、　（８
ｂ）を前記咬合爪（１４ａ）、（１４ａ）と咬合させる
ことで後車輪（５）。1 and 3 (as shown, the differential lock mechanism (
7) Bebelegia (lO) attached to the output shaft (9) of the differential gear (the above-mentioned traveling transmission 1c), this Bebe? The ring gear (b) that engages with the legya, the cylindrical differential case @ which the ring gear (b) is attached to, and the differential that is rotatably supported inside the differential case (2) in a meticulous manner perpendicular to the meticulous IPI of the differential case (2). Pinion gear (2), a3
The cylindrical differential side gears (to) and (b) fitted rotatably around the axis IPI of the differential gear (6), and the differential case (
It is composed of a support shaft (t) provided in the fine detail tp) of 6), and a differential side gear α4. (To) The shaft itself is also used as a differential shaft. And differential side gear α4. Each of the outer ends of the α force has an occlusal claw (14a) radially relative to the axis IPI.
, (14a) are formed protrudingly, and the left and right rear wheels (6)
, Sleeve (8m) spline-fitted to the axle (G) and (To) of (5), Articulating claw (8b) of (8a), (8
b) by engaging the engaging claws (14a), (14a) to form the rear wheel (5).

（５）が駆動状態になる。　尚、このスリーブ（８ａ）
。(5) becomes a driving state. Furthermore, this sleeve (8a)
.

（８ａ）及び咬合爪（８ｂ）　、　（８ｂ）を前記操向
クラッチ＋８）、（８）　、　＋８）、（８）と称する
。　そして、前記運転部囚に設けたペダ・しく１７）　
、α力の踏み操作でシフトフォーク（至）、ａａを介し
て操向クラッチ（８）、（８）、ｆｌｉｌがのり操作さ
れると同時忙、スリーブ（ｓａ）、（ｓａ）の外方に配
設したバネα呻、αりを介してブレーキ勾、翰が操作さ
れ、後車輪（５）、（ｂ）の回転を択一的、又は同時忙
停止できるようになっている。(8a) and the engaging claws (8b) and (8b) are referred to as the steering clutches +8), (8), +8), and (8). And, the pedal mechanism provided to the driver's prisoner17)
, When the steering clutches (8), (8), and flil are operated via the shift fork (to) and aa by pressing the α force, the steering clutch (8), (8), and flil are simultaneously moved outward from the sleeves (sa) and (sa). The brake slope and the blade are operated through the provided springs, and the rotation of the rear wheels (5) and (b) can be stopped either alternatively or simultaneously.

又、該田植機では、前記ペダ？しａ？）、α力の踏み操
作で前記デフロック機構（７）が作動状態に設定できる
よう連係されている。　りま９、前記デフケース（２）
の両端部にスリーブ（７ｍ）　、（７ｍ）がスプライン
を介して左右摺動可能に外嵌され、このスリーブ（７ｍ
）　、　（７ｍ）には、前記デフサイドギヤ（ロ）、α
力の咬合爪（１４ｍ）、（１４ｍ）に左右外方から咬合
できる咬合爪（７ｂ）　、　（７ｂ）が形成されている
。Also, in the rice transplanter, the pedal? Sha? ), are linked so that the differential lock mechanism (7) can be set to the operating state by stepping on the α force. Rima 9, the differential case (2)
Sleeves (7m) and (7m) are fitted onto both ends of the sleeve (7m) via splines so that they can slide left and right.
), (7m) includes the differential side gear (b), α
Articulating claws (7b), (7b) that can bite from the left and right sides are formed on the power biting claws (14m), (14m).

又、前記シフトフォーク（至）、（至）の操作軸（１８
ｍ）。Further, the operation shaft (18) of the shift fork (to), (to)
m).

（１８ｍ）につる巻きバネ（社）、＠を介してカム体器
。(18m) Helix Spring Co., Ltd., cam body via @.

■が外嵌され操向クラッチ＋８）、（８）　、　（８＋
が１７Ｊ！ｌｌ操作されると、前記バネ（２１１、＠を
介して前記スリーブ（７ａ）　、　（７ｍ）が差動機構
方向に押圧されデフロック布切状態になるのである。■ is fitted externally and steering clutch +8), (8), (8+
is 17J! When operated, the sleeves (7a) and (7m) are pressed in the direction of the differential mechanism via the springs (211, @) and enter the differential lock cloth cut state.

尚、デフロック機構（７）がバネ２１１を介して操作さ
れる理由はデフロック機構（７）が咬合式に構成されて
いる次め、前記咬合爪（７ｍ）　、　（７ａ）が非咬合
位相にある場合にも、前記ペダＩしαη、（ロ）が干渉
されるのを防止する念めである。　そして、前記スリー
ブ（７ａ）とスリーブ（７ａ）に形成した咬合爪（７ｂ
）とを前記デフロック機構（７）と称する。The reason why the differential lock mechanism (7) is operated via the spring 211 is that the differential lock mechanism (7) is configured in an interlocking manner, and secondly, the interlocking claws (7m) and (7a) are in a non-occlusal phase. In this case, the aim is to prevent the pedal I, αη, and (b) from being interfered with. Then, the sleeve (7a) and the occlusal claw (7b) formed on the sleeve (7a)
) is referred to as the differential lock mechanism (7).

〔別実施例〕[Another example]

本実施例では、操向クラッチとデフロック機構の連係機
構中に弾性融通を装備するに、つる巻きバネを用いてい
たが、コイタレバネ、板バネ等を用いて良く、又、デフ
ロック構造も様々な咬合式の構成のものを用いても良い
。In this embodiment, a helical spring was used to provide elastic flexibility in the linkage mechanism between the steering clutch and the differential lock mechanism. You may use the structure of the formula.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明に係る作業車の走行伝動構造の実施例を示
し、４Ｊ！Ｊ１図は田植機の走行伝動系を示す概略平面
図、第２図は田植機の全体側面図、第３因は後車輪の差
動装置等を示す断面図である０ （５）・・・・・・車輪、（７）・・・・・・デフロッ
ク機構、（８）・・・・・・操向クラッチ、（７）・・
・・・・車軸、翰・・・・・・ブレーキ、（Ｅｌ・・・
・・・差動装置。The drawings show an embodiment of the traveling transmission structure for a working vehicle according to the present invention, and the drawings show an embodiment of the traveling transmission structure for a working vehicle according to the present invention. Figure J1 is a schematic plan view showing the traveling transmission system of the rice transplanter, Figure 2 is an overall side view of the rice transplanter, and the third factor is a sectional view showing the rear wheel differential etc.0 (5)... ... Wheels, (7) ... Differential lock mechanism, (8) ... Steering clutch, (7) ...
...Axle, wire...brake, (El...
...Differential device.

Claims (1)

【特許請求の範囲】[Claims] 差動装置（Ｅ）の差動軸（１４）、（１４）と左右車軸
（５）とを操向クラッチ（８）、（８）を介して連動連
結するとともに、クラッチ切り操作に引続く一連の操作
で左右車軸（１６）、（１６）のブレーキ（２０）、（
２０）を制動作動させるよう構成し、前記操向クラッチ
（８）、（８）のいづれかの切り作動に連動して差動装
置（Ｅ）に備えた咬合式デフロック機構（７）をデフロ
ック作動させるように構成するとともに、前記操向クラ
ッチ（８）、（８）と前記デフロック機構（７）との連
係機構中に弾性融通を装備して、デフロック機構（７）
の非咬合状態で操向クラッチ（８）、（８）の切り操作
及びブレーキ（２０）、（２０）の制動操作を可能に構
成した作業車の走行伝動構造。The differential shafts (14), (14) of the differential device (E) and the left and right axles (5) are interlocked and connected via the steering clutches (8), (8), and a series of steps following the clutch disengagement operation are performed. By operating the left and right axles (16), (16) brakes (20), (
20) is configured to perform a braking action, and in conjunction with the disengaging operation of either of the steering clutches (8), (8), an engagement type differential lock mechanism (7) provided in the differential device (E) is operated to perform a differential lock operation. The steering clutches (8), (8) and the differential lock mechanism (7) are configured to have an elastic accommodating mechanism in a linkage mechanism with the differential lock mechanism (7).
A travel transmission structure for a work vehicle configured to enable disengagement of steering clutches (8), (8) and braking operation of brakes (20), (20) in a non-engaged state.
JP24549184A 1984-11-19 1984-11-19 Structure of traveling transmission for working vehicle Pending JPS61122081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24549184A JPS61122081A (en) 1984-11-19 1984-11-19 Structure of traveling transmission for working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24549184A JPS61122081A (en) 1984-11-19 1984-11-19 Structure of traveling transmission for working vehicle

Publications (1)

Publication Number Publication Date
JPS61122081A true JPS61122081A (en) 1986-06-10

Family

ID=17134447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24549184A Pending JPS61122081A (en) 1984-11-19 1984-11-19 Structure of traveling transmission for working vehicle

Country Status (1)

Country Link
JP (1) JPS61122081A (en)

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