JPH02185864A - Steering system for tractor or the like - Google Patents
Steering system for tractor or the likeInfo
- Publication number
- JPH02185864A JPH02185864A JP661389A JP661389A JPH02185864A JP H02185864 A JPH02185864 A JP H02185864A JP 661389 A JP661389 A JP 661389A JP 661389 A JP661389 A JP 661389A JP H02185864 A JPH02185864 A JP H02185864A
- Authority
- JP
- Japan
- Prior art keywords
- steering
- wheel
- arm
- wheels
- spline
- 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
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、トラクタ等の操向装置に関し、移動農機に
利用できる。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a steering device for a tractor or the like, and can be used for mobile agricultural machinery.
従来の技術、および発明が解決しようとする課題
防除機やハウス内での栽培管理機等の移動農機にあって
は、往行程と複行程との走行を、旋回しないで車体の方
向を一定にした状態で行うことがあり、このようなとき
往行程、復行程共に前車輪の操向操作によってのみ行う
は、操縦性が不安定である。Problems to be Solved by Conventional Technology and the Invention In mobile agricultural machines such as pest control machines and cultivation management machines in greenhouses, it is difficult to maintain the direction of the vehicle body in a constant direction without turning during the forward stroke and double stroke. In such cases, if both the forward and backward strokes are performed only by steering the front wheels, the maneuverability will be unstable.
課題を解決するための手段
この発明は、前車輪(1)と後車輪(2)とを伝動して
走行する車体(3)に、該前車輪(1)のみの操向と後
車輪(2)のみの操向とに切換自在のステアリングハン
ドル(4)を設けてなるトラクタ等の操向装置の構成と
する。Means for Solving the Problems The present invention provides a vehicle body (3) that travels by transmitting power between the front wheels (1) and the rear wheels (2). ) A steering device for a tractor or the like is provided with a steering handle (4) that can be switched between two directions.
発明の作用、および効果
前車輪(1)及び後車輪(2)は操向可能の構成で、ス
テアリングハンドル(4)で操向を切換しながら操縦で
きる。例えば、走行方向の前側の車輪を操向するときは
、前車輪(1)側を前進方向とするにはステアリングハ
ンドル(4)の操向連動を前車輪(1)に切換え、後車
輪(2)側を前進方向とするにはステアリングハンドル
(4)の操向連動を後車輪(2)に切換えて行う。Functions and Effects of the Invention The front wheels (1) and the rear wheels (2) are configured to be steerable, and can be controlled while switching the steering with the steering handle (4). For example, when steering the front wheel in the running direction, to set the front wheel (1) side as the forward direction, switch the steering linkage of the steering handle (4) to the front wheel (1), and then switch the steering linkage of the steering handle (4) to the front wheel (1), and ) side is set as the forward direction by switching the steering linkage of the steering handle (4) to the rear wheel (2).
このようにステアリングハンドル(4)による操向は、
車体(3)の前車輪(1)側の操向連動と、後車輪(2
)側の操向連動とに切換えて行うことができるために、
この反対側の操向されない側の後車輪(2)又は前車輪
(1)は、車体(3)に対して平行する方向へ向けた状
態として、作業状態に適応した操向を行うことができ、
前進、後進時の操向を安定することができる。In this way, steering with the steering handle (4)
Steering linkage on the front wheel (1) side of the vehicle body (3) and rear wheel (2)
) side steering linkage.
The rear wheels (2) or front wheels (1) on the opposite side, which are not steered, are oriented in a direction parallel to the vehicle body (3), so that steering can be performed in accordance with the working conditions. ,
Steering can be stabilized when moving forward or backward.
実施例
なお、国側において、トラクタ車体(3)の前部、後部
には、左右一対の前車輪(1)、後車輪(2)を操向自
在に設けている。又、これらの各前車輪(1)及び後車
輪(2)は、車体(3)に搭載のエンジンから変速伝動
装置等を介して伝動走行する四輪駆動形態としている。Embodiment On the national side, a pair of left and right front wheels (1) and rear wheels (2) are provided at the front and rear parts of the tractor body (3) so as to be steerable. Further, each of the front wheels (1) and the rear wheels (2) is of a four-wheel drive type in which power is transmitted from an engine mounted on the vehicle body (3) through a variable speed transmission or the like.
(5)は前車輪(1)の操向軸、(6)は左右前車輪(
1)の操向アーム(7)間を連結するタイロッド、(8
)は後車輪(2)の操向軸、(9)はこの操向アーム、
(10)はタイロッドである。(5) is the steering axis of the front wheel (1), (6) is the left and right front wheel (
Tie rod (8) connecting between the steering arms (7) of (1)
) is the steering axis of the rear wheel (2), (9) is this steering arm,
(10) is a tie rod.
車体(3)の前部、又は前後中央部には、ステアリング
ハンドル(4)を、操縦席に対向に設け、このステアリ
ングハンドル(4)で回動されるステアリング軸(11
)の下端から、切換レバー(32)の操作によって操向
連動の切換られる操向切換装置(35)を経て、該前車
輪(1)の操向アーム(7)と後車輪(2)の操向アー
ム(9)とのうちいずれか一方のみを選択して連動しつ
る構成としている。A steering handle (4) is provided opposite to the driver's seat at the front or front-rear center of the vehicle body (3), and a steering shaft (11) is rotated by the steering handle (4).
), the steering arm (7) of the front wheel (1) and the steering arm (7) of the rear wheel (2) are connected via a steering switching device (35) that switches the steering linkage by operating the switching lever (32). Only one of the facing arms (9) is selected and interlocked to form a hanging structure.
該ステアリング軸(11)の下端部には、車体(3)゛
に一体のブラケット(12)に支持する上下摺動自在の
摺動軸(13)を設け、この摺動軸(13)の上部と下
部とにはスプライン(14) (15)を形成し、この
外周には該スプライン(14)に扇形ギヤ(16)を有
するスプラインボス(17)と常時噛合させて嵌合し、
又該スプライン(15)部には扇形のアーム(18)
(19)を回動自在に嵌合し、この摺動軸(13)の上
下摺動によってこれら扇形のアーム(18)のスプライ
ンボス(20)と、アーム(19)のスプラインボス(
21)とに噛合切換自在に構成している。該扇形ギヤ(
16)にはステアリング軸(11)のピニオンギヤ(2
2)を噛合する。ステアリングハンドル(4)の回動操
作で、ピニオンギヤ(22) 、扇形ギヤ(16) 、
スプラインボス(17)、スプライン(14) 、摺動
軸(13) 、及びスプライン(15)等を経て、この
スプライン(15)の切換噛合するスプラインボス(2
0)のアーム(18)、又はスプラインボス(21)の
アーム(19)を切換選択して連動回動する構成として
いる。(23)はギヤケースである。A vertically slidable sliding shaft (13) supported by a bracket (12) integrated with the vehicle body (3) is provided at the lower end of the steering shaft (11). Splines (14) and (15) are formed on the lower part of the spline, and a spline boss (17) having a fan-shaped gear (16) is fitted on the outer periphery of the spline (14) so as to constantly mesh with the spline boss (17).
Also, the spline (15) has a fan-shaped arm (18).
(19) are rotatably fitted, and by vertically sliding the sliding shaft (13), the spline boss (20) of the fan-shaped arm (18) and the spline boss (20) of the arm (19) are connected.
21) so that the meshing can be switched freely. The sector gear (
16) is the pinion gear (2) of the steering shaft (11).
2) mesh. By rotating the steering handle (4), the pinion gear (22), sector gear (16),
Through the spline boss (17), the spline (14), the sliding shaft (13), the spline (15), etc., the spline boss (2) with which the spline (15) switches and engages is connected.
The arm (18) of the spline boss (21) or the arm (19) of the spline boss (21) can be selected and rotated in conjunction with each other. (23) is a gear case.
該摺動軸(13)には、この摺動軸(13)と一体的で
平行なシフター(24) 、及びロックビン(25)
(26)を、上記ブラケット(12)に対して摺動自在
に設け、このロックビン(25)(26)は上記アーム
(18) (19)のロック孔(27) (28)に対
して交互に嵌脱することによって、ロックビン(25)
(26)の嵌合された側のアーム(18) (19)
の回動を中立位置にロックし、ロックビン(25) (
26)の嵌合されない側のアーム(18)又は(19)
のみの回動を許す。The sliding shaft (13) includes a shifter (24) that is integral with and parallel to the sliding shaft (13), and a lock bin (25).
(26) is slidably provided on the bracket (12), and the lock bins (25) and (26) are arranged alternately on the lock holes (27) and (28) of the arms (18) and (19). Lock bin (25) by fitting and removing
Arms (18) (19) on the fitted side of (26)
Lock the rotation of the lock bin (25) (
Arm (18) or (19) on the unfitted side of 26)
Allow the chisel to rotate.
これら摺動軸(13)及びシフター(24)等の上端を
一体に連結する連結部材(29)を、ブラケット(30
)の支軸(31)回りに回動操作する切換レバー(32
)によって上下摺動自在に切換操作する構成としている
。(33)は前車輪(1)の操向アーム(7)とアーム
(19)とを連結するロッド、(34)は後車輪(2)
の操向アーム(9)とアーム(18)とを連結するロッ
ドである。A connecting member (29) that integrally connects the upper ends of the sliding shaft (13), shifter (24), etc. is connected to the bracket (30).
) The switching lever (32) rotates around the spindle (31) of the
) so that it can be switched freely up and down. (33) is a rod that connects the steering arm (7) and arm (19) of the front wheel (1), (34) is the rod that connects the steering arm (7) of the front wheel (1) and the arm (19);
This is a rod that connects the steering arm (9) and the arm (18).
前車輪(1)及び後車輪(2)を直進状態に操向して、
切換レバー(32)を第1図のように上方(イ゛)へ操
作すると、スプライン(15)は前車輪(1)操向用の
アーム(19)のスプラインボス(21)に噛合して、
後車輪(2)操向用のアーム(18)はロックビン(2
5)の係合でロックされるため、ステアリングハンドル
(4)の操向連動は、前車輪(1)のみ行われる。又、
切換レバー(32)を下動操作(ロ)すると、スプライ
ン(15)は後車輪(2)操向用のアーム(18)のス
プラインボス(20)に噛合すると共に、ロックビン(
26)が前車輪(1)操向側のアーム(19)のロック
孔(28)に係合する。このため後車輪(2)のみ操向
できる。Steering the front wheels (1) and rear wheels (2) straight ahead,
When the switching lever (32) is operated upward (a) as shown in Fig. 1, the spline (15) meshes with the spline boss (21) of the arm (19) for steering the front wheel (1).
The rear wheel (2) steering arm (18) is attached to the lock bin (2).
5), the steering wheel (4) is interlocked with the steering of only the front wheels (1). or,
When the switching lever (32) is operated downward (b), the spline (15) meshes with the spline boss (20) of the arm (18) for steering the rear wheel (2), and also engages the lock bin (
26) engages with the lock hole (28) of the arm (19) on the steering side of the front wheel (1). Therefore, only the rear wheels (2) can be steered.
図はこの発明の一実施例を示すもので、第1図は一部の
拡大側断面図、第2図はその一部の平面図、第3図は一
部の平面図である。
図中、符号(1)は前車輪、 (2)は後車輪、(3)
は車体、 (4)はステアリングハンドル、(35)は
操向切換装置を示す。The drawings show an embodiment of the present invention; FIG. 1 is an enlarged side sectional view of a portion thereof, FIG. 2 is a plan view of a portion thereof, and FIG. 3 is a plan view of a portion thereof. In the diagram, code (1) is the front wheel, (2) is the rear wheel, and (3) is the front wheel.
(4) shows the steering wheel, and (35) shows the steering switching device.
Claims (1)
(3)に、該前車輪(1)のみの操向と後車輪(2)の
みの操向とに切換自在のステアリングハンドル(4)を
設けてなるトラクタ等の操向装置。A vehicle body (3) that drives by transmitting power between the front wheels (1) and the rear wheels (2) includes a steering wheel that can be switched between steering only the front wheels (1) and steering only the rear wheels (2). A steering device for a tractor, etc., provided with a handle (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP661389A JPH02185864A (en) | 1989-01-13 | 1989-01-13 | Steering system for tractor or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP661389A JPH02185864A (en) | 1989-01-13 | 1989-01-13 | Steering system for tractor or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02185864A true JPH02185864A (en) | 1990-07-20 |
Family
ID=11643213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP661389A Pending JPH02185864A (en) | 1989-01-13 | 1989-01-13 | Steering system for tractor or the like |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02185864A (en) |
-
1989
- 1989-01-13 JP JP661389A patent/JPH02185864A/en active Pending
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