JPH0721381Y2 - Work vehicle speed maintenance structure - Google Patents

Work vehicle speed maintenance structure

Info

Publication number
JPH0721381Y2
JPH0721381Y2 JP1763689U JP1763689U JPH0721381Y2 JP H0721381 Y2 JPH0721381 Y2 JP H0721381Y2 JP 1763689 U JP1763689 U JP 1763689U JP 1763689 U JP1763689 U JP 1763689U JP H0721381 Y2 JPH0721381 Y2 JP H0721381Y2
Authority
JP
Japan
Prior art keywords
support shaft
vehicle speed
speed maintaining
release
speed
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 - Lifetime
Application number
JP1763689U
Other languages
Japanese (ja)
Other versions
JPH02108619U (en
Inventor
一明 黒原
賢二 松田
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 JP1763689U priority Critical patent/JPH0721381Y2/en
Publication of JPH02108619U publication Critical patent/JPH02108619U/ja
Application granted granted Critical
Publication of JPH0721381Y2 publication Critical patent/JPH0721381Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Gear-Shifting Mechanisms (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Controls For Constant Speed Travelling (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は作業車の車速維持構造に係り、詳しくは、車速
を設定値に保つ速度維持機構の作動をブレーキペダルの
踏み込み操作に伴って解除する解除機構を備えるととも
に、この解除機構を、断面コ字状機体フレームの上下横
フレーム部の支持孔に回動自在に貫通させた支軸に、前
記ブレーキペダルからの操作力をブレーキ装置へ伝達す
るための中継アームと、前記速度維持機構を操作する解
除ピンとを固設して構成してある作業車の車速維持構造
に関する。
[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vehicle speed maintaining structure of a work vehicle, and more specifically, releases the operation of a speed maintaining mechanism for maintaining a vehicle speed at a set value in accordance with a depression operation of a brake pedal. The release mechanism is provided, and the release mechanism transmits the operation force from the brake pedal to the brake device on a support shaft that rotatably penetrates through the support holes of the upper and lower horizontal frame portions of the U-shaped cross-section body frame. The present invention relates to a vehicle speed maintaining structure for a working vehicle, which is configured by fixedly installing a relay arm and a release pin for operating the speed maintaining mechanism.

〔従来の技術〕[Conventional technology]

以前に本出願人によって出願された実願昭63−170802号
で示されるもののように、前記した作業車の車速維持構
造の解除機構における支軸は、その下方への抜け止めを
サークリップによって行っていた。
As described in Japanese Patent Application No. 63-170802 filed by the applicant of the present application, the supporting shaft of the release mechanism of the vehicle speed maintaining structure of the work vehicle described above is retained by a circlip to prevent the shaft from coming off. Was there.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

前記支軸は、ブレーキ装置としての一構成部品であると
ともに、ブレーキ操作に伴って速度維持装置の作動を解
除するための構成部品でもあり、この支軸が位置ずれし
たりすれば、ブレーキの作動や解除機構の作動が不能に
なる等の不具合発生のおそれが高く、非常に重要度の高
い部品である。
The support shaft is one component of the brake device, and also a component for releasing the operation of the speed maintaining device in accordance with the brake operation. If the support shaft is displaced, the brake is operated. It is a very important component because there is a high risk of problems such as the inability to operate the release mechanism and the release mechanism.

前記提案技術によれば、この重要部品である支軸の位置
の規制、すなわち下方への抜け止めを、支軸に嵌めたサ
ークリップのみで行なうものであるので、支軸まわりの
荷重は、このサークルリップに作用することになり、サ
ークリップ外れによる支軸の脱落が懸念されるようにな
ってきたのである。
According to the proposed technique, the position of the spindle, which is an important part, is restricted, that is, the downward slip is prevented only by the circlip fitted to the spindle, so the load around the spindle is As it acts on the circle lip, there is a concern that the spindle may fall out due to the circlip coming off.

本考案は解除機構におけるフレーム、支軸、連結ピン等
の配置構成に着目することによって、支軸が位置ずれす
るおそれを可及的に解消して車速維持構造としての信頼
性を向上させることを目的とする。
The present invention focuses on the arrangement of the frame, the support shaft, the connecting pin, etc. in the release mechanism to eliminate the possibility that the support shaft will be displaced, and improve the reliability of the vehicle speed maintaining structure. To aim.

〔課題を解決するための手段〕[Means for Solving the Problems]

上記目的を達成するために本考案は、冒頭に記載した作
業車の車速維持構造において、前記解除ピンを、前記フ
レームの縦フレーム部に形成した前記支軸の回動方向に
沿って長いスリットを貫通突出する状態で前記支軸から
突設し、この突出端に前記速度維持機構を操作する連結
部を設けることによって、前記解除ピンで前記支軸の上
下方向の位置決めをしてあることを特徴構成とする。
In order to achieve the above-mentioned object, the present invention provides, in the vehicle speed maintaining structure for a working vehicle described at the beginning, the release pin with a long slit along the rotation direction of the support shaft formed in the vertical frame portion of the frame. It is characterized in that the supporting pin is positioned in the up-and-down direction by the release pin by protruding from the support shaft in a protruding state and providing a connecting portion for operating the speed maintaining mechanism at the protruding end. The configuration.

〔作用〕[Action]

前記構成によれば、支軸の上下方向の位置は連結ピンと
縦フレーム部のスリット上下端面との接当によって規制
されるようになる。
According to the above configuration, the vertical position of the support shaft is regulated by the contact between the connecting pin and the upper and lower end surfaces of the slit of the vertical frame portion.

〔考案の効果〕[Effect of device]

従って、支軸に固設される丈夫な連結ピンによって支軸
の位置ずれを規制できるようになったので、支軸の位置
ずれのおそを可及的に解消でき、従来に比べて車速維持
構造としての信頼性を向上させることができた。
Therefore, since the displacement of the support shaft can be regulated by the strong connecting pin fixed to the support shaft, the displacement of the support shaft can be eliminated as much as possible, and the vehicle speed maintaining structure can be improved compared to the conventional structure. As a result, it was possible to improve the reliability.

また、その手段が主としてもともと存在している連結ピ
ンの配置工夫によるものであり、しかも、サークリップ
は不要であるから、その分コストダウンしながら所期し
た目的を達成できる利点がある。
Further, the means is mainly due to the arrangement of the existing connecting pin, and since the circlip is not necessary, there is an advantage that the intended purpose can be achieved while the cost is reduced accordingly.

〔実施例〕〔Example〕

以下に、本考案の実施例を作業車の一例である乗用芝刈
機に適用した場合について、図面に基づいて説明する。
A case where the embodiment of the present invention is applied to a riding lawn mower, which is an example of a work vehicle, will be described below with reference to the drawings.

第5図に示すように、車輪式走行機体の前後輪間にモー
ア(1)を昇降操作自在に取付けると共に、走行機体か
らモーア(1)に回動力伝達するように構成して、乗用
芝刈り機を構成してある。
As shown in FIG. 5, the mower (1) is mounted between the front and rear wheels of the wheeled traveling vehicle so as to be able to move up and down, and the driving power is transmitted from the traveling vehicle to the mower (1). The machine is configured.

エンジン(E)の出力が、中立状態を挟んで前進側と後
進側に切換え可能な油圧式走行用無段変速装置(2)を
介して後輪用ミッション(3)に伝達されるように構成
し、そして、第1図及び第3図に示す走行用操作構造に
より無段変速装置(2)を操作して機体走行操作をする
ようにしてある。
The output of the engine (E) is transmitted to the rear wheel mission (3) via a hydraulic traveling continuously variable transmission (2) capable of switching between a forward drive side and a reverse drive side with a neutral state interposed therebetween. Then, the continuously variable transmission (2) is operated by the traveling operation structure shown in FIG. 1 and FIG. 3 to operate the machine body.

すなわち、無段変速装置(2)の回転軸式の操作部(2
a)に揺動リンク(4)及び押引きロッド(5)を介し
て変速ペダル(6)を連動させると共に、この変速ペダ
ル(6)を前進側操作部(6a)をして踏込み操作すると
操作部(2a)が前進側に回動するように、かつ、変速ペ
ダル(6)を後進側操作部(6b)をして踏込み操作する
と操作部(2a)が後進側に回動するように、かつ、いず
れにおいても変速ペダル(6)の踏込み操作ストローク
を大にするほど操作部(2a)がより高速側になるように
してある。そして、後輪用ミッション(3)のケースに
軸芯(P1)の周りで揺動するように枢着したアーム
(7)のローラ部(7a)をスプリング(8)により揺動
リンク(4)のカム面(4a)に取付け付勢すると共に、
この接当付勢とカム面(4a)の形状とのための揺動リン
ク(4)が中立状態に付勢されるように構成することに
より、変速ペダル(6)の操作を解除すると、スプリン
グ(8)と無段変速装置(2)の自己復元力とによる付
勢力のために変速ペダル(6)及び操作部(2a)が自動
的に中立位置に復帰するようにしてある。
That is, the rotary shaft type operation unit (2
It is operated by interlocking the speed change pedal (6) with a) via the swing link (4) and push-pull rod (5), and depressing the speed change pedal (6) by operating the forward operation side (6a). So that the part (2a) is rotated forward, and the operation part (2a) is rotated backward when the transmission pedal (6) is depressed by operating the reverse operation part (6b). Moreover, in any of these cases, the larger the stepping stroke of the transmission pedal (6), the higher the speed of the operating portion (2a). Then, the roller portion (7a) of the arm (7) pivotally attached to the case of the rear wheel mission (3) so as to swing around the axis (P 1 ) is moved by the swing link (4) by the spring (8). ) Is attached to and biased on the cam surface (4a) of
The rocking link (4) for the abutment bias and the shape of the cam surface (4a) is configured to be biased to the neutral state, so that when the operation of the shift pedal (6) is released, the spring is released. The shift pedal (6) and the operating portion (2a) are automatically returned to the neutral position due to the biasing force of (8) and the self-restoring force of the continuously variable transmission (2).

前記揺動リンク(4)をスプリング(8)及び無段変速
装置自体の復元力による中立状態への付勢にかかわらず
中立復帰しないように前進側位置に受止め支持させるた
めの丸棒製ストッパー(9)を取付け板(10)を介して
機体側支持部材(11)に取付けてある。取付け板(10)
は揺動リンク(4)の揺動軸芯(P2)と平行またはほぼ
平行な別の軸芯(P3)の周りで回動するように支持部材
(11)のボス部(11a)に外嵌してあると共に、摩擦抵
抗機構(A)によって支持部材(11)に固定されるよう
に構成してあり、ストッパー(9)を形成する丸棒の他
端側で作成してある揺動部材としての調速レバー(12)
を軸芯(P3)の周りで揺動操作することにより、ストッ
パー(9)が軸芯(P3)の周りで揺動調節されて揺動リ
ンク(4)を高速側に押圧揺動させて無段変速装置
(2)を増速操作したり、揺動リンク(4)が中立側に
往動されることを許容して無段変速装置(2)を減速操
作するように、かつ、ストッパー(9)が摩擦抵抗機構
(A)により調節位置に固定されて揺動リンク(4)を
受止め支持することにより、揺動リンク(4)の位置に
よって決まる設定速度状態に無段変速装置(2)を維持
するようにしてある。
A stopper made of a round bar for receiving and supporting the swinging link (4) at the forward side position so as not to return to the neutral state regardless of the biasing force of the spring (8) and the continuously variable transmission itself to the neutral state. (9) is attached to the machine body side support member (11) via the attachment plate (10). Mounting plate (10)
Is attached to the boss (11a) of the support member (11) so as to rotate about another axis (P 3 ) which is parallel or substantially parallel to the axis (P 2 ) of the swing link (4). Swing which is externally fitted and is configured to be fixed to the support member (11) by the friction resistance mechanism (A), and is formed on the other end side of the round bar forming the stopper (9). Governing lever as a member (12)
By swinging around the shaft center (P 3 ), the stopper (9) is swing-adjusted around the shaft center (P 3 ), and the swing link (4) is pushed and swung to the high speed side. To increase the speed of the continuously variable transmission (2) or to allow the swinging link (4) to move forward to the neutral side so as to decelerate the continuously variable transmission (2), and The stopper (9) is fixed to the adjusted position by the friction resistance mechanism (A) to receive and support the swing link (4), so that the continuously variable transmission is brought to a set speed state determined by the position of the swing link (4). (2) is maintained.

つまり、作業時には、調速レバー(12)の揺動操作によ
りストッパー(9)を揺動調節して、無段変速装置
(2)を増減速操作すると共にストッパー(9)により
維持設定速度を所望速度に変更調節することにより、無
段変速装置(2)を所望速度の前進伝動状態に維持する
ための人為操作をしなくとも所望の一定速度で走行でき
るようにしてある。そして、変速ペダル(6)による変
速操作をしながら走行したり、後進走行をする際には、
調速レバー(12)を中立位置(N)に対して前進側とは
反対側に位置する操作位置(OFF)に操作し、ストッパ
ー(9)を変速操作の障害物にならないように揺動リン
ク(4)の作動範囲から外れた箇所に位置させると共に
この箇所に摩擦抵抗機構(A)によって維持しておくよ
うにしてある。
That is, at the time of work, the stopper (9) is rockably adjusted by the rocking operation of the speed governing lever (12) to accelerate or decelerate the continuously variable transmission (2), and the stopper (9) is used to maintain a desired set speed. By changing and adjusting the speed, the continuously variable transmission (2) can travel at a desired constant speed without any manual operation for maintaining the forward transmission at the desired speed. Then, when traveling while performing a speed change operation by the shift pedal (6) or when traveling in reverse,
Operate the speed control lever (12) to the operation position (OFF) located on the side opposite to the forward side with respect to the neutral position (N), and swing the stopper (9) so that it does not become an obstacle for gear shifting operation. It is located outside the operating range of (4) and maintained at this location by the friction resistance mechanism (A).

前記摩擦抵抗機構(A)を構成するに、取付け板(1
0)、これの両側に各別に位置する一対の摩擦板(1
3),(13)及び固定カム(14)の夫々をロックバネ(1
5)の弾性復元力によって支持部材(11)の方に押圧す
ることにより、取付け板(10)に揺動リンク(4)の中
立復元力で揺動されないように摩擦抵抗を付与するよう
にしてある。そして、後輪ミッション(3)に備えてあ
る走行用ブレーキ装置(16)が制動操作されると、走行
用ブレーキ装置(16)が制動操作されると、走行用ブレ
ーキ装置(16)とブレーキペダル(24)とを連動させる
ための連動用回転支軸(17)に一体回転可能に付設して
ある解除ピン(18)がロックバネ(15)及び固定カム
(14)の支持軸(19)の後述する速度維持機構(D)を
操作する連結部としての操作アーム(20)に接当して支
持軸(19)が回転操作され、支持軸(19)に取付ピン
(21)をして一体回転可能に取付けてある回動カム(2
2)が回動し、この回動カム(22)とスクリュー歯車式
に咬合する前記固定カム(14)をも駆動するが、この固
定カム(14)はその腕部材(14a)が支持部材(11)に
取り付けられた停止具(25)と接当して回転できないの
で、結果的に固定カム(14)が軸芯(P3)方向に移動
し、支持軸(19)に摺動自在に取付けてあるバネ操作部
材(23)を介してロックバネ(15)をロック解除状態に
圧縮変形操作するように構成してある。すなわち、走行
用ブレーキ(16)の制動操作がされると、走行用ブレー
キ(16)の解除機構(C)に連動した固定カム(14)と
回動カム(22)から成る乗り上がりカム機構(B)が操
作されて自動的にロック解除状態になってストッパー
(9)および前記各機構(A,B)等から構成される走行
速度維持機構(D)の作動を解除するようにしてある。
To construct the friction resistance mechanism (A), the mounting plate (1
0), a pair of friction plates (1
Lock the springs (1) to (3), (13) and the fixed cam (14) respectively.
By pressing the support member (11) by the elastic restoring force of 5), frictional resistance is given to the mounting plate (10) so as not to be swung by the neutral restoring force of the swinging link (4). is there. When the traveling brake device (16) provided in the rear wheel mission (3) is braked, the traveling brake device (16) and the brake pedal are operated. The release pin (18) attached to the interlocking rotary support shaft (17) for interlocking with (24) integrally rotatably has a lock spring (15) and a support shaft (19) for the fixed cam (14) described later. The support shaft (19) is rotated by contacting the operation arm (20) as a connecting portion for operating the speed maintaining mechanism (D), and the mounting pin (21) is attached to the support shaft (19) to integrally rotate. Rotating cam (2
2) rotates, and also drives the fixed cam (14) that meshes with the rotary cam (22) in a screw gear type. The fixed cam (14) has its arm member (14a) supported by the support member (14a). Since it cannot contact the stopper (25) attached to 11) and rotate, the fixed cam (14) moves in the axial core (P 3 ) direction and is slidable on the support shaft (19). The lock spring (15) is configured to be compressed and deformed to an unlocked state via the attached spring operating member (23). That is, when the traveling brake (16) is braked, the ride-on cam mechanism (which includes the fixed cam (14) and the rotating cam (22) interlocking with the traveling brake (16) release mechanism (C) ( B) is operated to automatically enter the unlocked state to release the operation of the traveling speed maintaining mechanism (D) including the stopper (9) and the mechanisms (A, B).

第1,2図に示すように、前記解除機構は断面コ字状機体
フレームの上下横フレーム部の支持孔に回動自在に貫通
させた支軸に、前記ブレーキペダルからの操作力をブレ
ーキ装置へ伝達するための中継アームと、前記速度維持
機構を操作する解除ピンとを固設してあるとともに、前
記解除ピンを、前記フレームの縦フレーム部に形成した
前記支軸の回動方向に沿って長いスリットを貫通突出す
る状態で前記支軸から突設し、この突出端に前記速度維
持機構を操作する連結部を設けることによって、前記解
除ピンで前記支軸の上下方向の位置決めをしてある。
As shown in FIGS. 1 and 2, the release mechanism is configured such that the operating force from the brake pedal is applied to the brake device by a support shaft rotatably penetrating the support holes of the upper and lower horizontal frame portions of the U-shaped body frame in cross section. And a release pin for operating the speed maintaining mechanism are fixedly provided, and the release pin is provided along the rotation direction of the support shaft formed in the vertical frame portion of the frame. By projecting from the support shaft in a state of penetrating and projecting through a long slit, and providing a connecting portion for operating the speed maintaining mechanism at the projecting end, the release pin positions the support shaft in the vertical direction. .

解除ピン(18)はロールピンで構成してあり、支軸(1
7)の横向き孔へ圧入的に嵌入することによって固設状
態となる。
The release pin (18) consists of a roll pin, and the support shaft (1
It becomes a fixed state by being press-fitted into the lateral hole of 7).

中継アーム(30)は、ブレーキペダル(24)とブレーキ
装置(16)からの各操作ロッドを枢支するとともに、支
軸(17)の下端部に、下側の横フレーム部(28)よりも
下側で固設してある。
The relay arm (30) pivotally supports each operation rod from the brake pedal (24) and the brake device (16), and is provided at the lower end of the support shaft (17) more than the lower horizontal frame part (28). It is fixed at the bottom.

従って、下端に中継アーム(30)を備えた支軸(17)を
フレーム(26)の下方から上下横フレーム部(27),
(28)の支持孔を貫通させ、それから解除ピン(18)を
スリット(31)を通して支軸(17)へ嵌合させればこの
支軸(17)のフレーム(26)への組付けが完了する。
Therefore, the support shaft (17) having the relay arm (30) at the lower end is attached to the upper and lower horizontal frame portions (27) from below the frame (26).
When the support hole of (28) is penetrated, and then the release pin (18) is fitted into the support shaft (17) through the slit (31), the support shaft (17) is assembled to the frame (26). To do.

前記停止具(25)は、第3図、第4図で示されるよう
に、支持部材(11)にボルト(32)止めされるととも
に、この支持部材(11)のボルト(32)挿通用孔(33)
を上下に長い長穴としてあり、前記停止具(25)をカム
回動方向に位置調節可能に構成してある。
As shown in FIG. 3 and FIG. 4, the stopper (25) is bolted (32) to the support member (11), and the bolt (32) insertion hole of the support member (11) is inserted. (33)
Is a vertically long slot, and the stopper (25) can be adjusted in position in the cam rotation direction.

また、前記停止具(25)の、固定カム(14)の腕部材
(14a)が接当する上面(25a)は水平面に形成してあ
る。
Further, the upper surface (25a) of the stopper (25) with which the arm member (14a) of the fixed cam (14) contacts is formed in a horizontal plane.

而して、前記乗り上りカム機構(B)によって、走行速
度維持、すなわちクルーズコントロールを解除する位置
を調節できることにより、ブレーキペダル(24)の踏み
始めからクルーズ解除位置(第1図のK点)までのスト
ローク(S)を調節できるので、ブレーキペダルの遊び
量、すなわち(S)を調節できるのである。
Thus, since the traveling speed can be maintained, that is, the position where the cruise control is released can be adjusted by the riding cam mechanism (B), the cruise release position (point K in FIG. 1) from the beginning of the depression of the brake pedal (24). Since the stroke (S) up to can be adjusted, the play amount of the brake pedal, that is, (S) can be adjusted.

第5図に示すように、前記モーア(1)は、油圧シリン
ダ(35)によって昇降操作されるが、リフトロッド(3
6)とリンク部材(37)との連結点を変更できるように
してある。すなわち、リンク部材(37)の連結用孔(3
8)をその揺動支点(39)に近い点にもう1箇所設ける
とともに、リフトロッド(36)の取付部(36a)の前端
部にももう1箇所の連結用孔(40)を設け、モーアの重
量が軽いときには前側の両連結用孔(38),(40)どう
しをピン連結し、モーアの重量が重いときには後側どう
しを連結(図示の状態)するように使い分けるのであ
る。
As shown in FIG. 5, the mower (1) is moved up and down by the hydraulic cylinder (35), but the lift rod (3
The connection point between 6) and the link member (37) can be changed. That is, the connecting hole (3) of the link member (37)
8) is provided at another point near the swing fulcrum (39), and another connecting hole (40) is also provided at the front end of the mounting portion (36a) of the lift rod (36). When the weight of the mower is light, both the connecting holes (38), (40) on the front side are pin-connected, and when the weight of the mower is heavy, the rear sides are connected (state shown in the figure).

尚、実用新案登録請求の範囲の項に図面との対象を便利
にする為に符号を記すが、該記入により本考案は添付図
面の構造に限定されるものではない。
In the claims of the utility model, reference numerals are given for convenience of drawing and objects, but the present invention is not limited to the structure of the accompanying drawings by the entry.

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

図面は本考案に係る作業車の車速維持構造の実施例を示
し、第1図は変速装置調速用操作部の一部切欠き正面
図、第2図は解除機構の側面図、第3図は変速装置調速
用操作部の側面図、第4図は乗り上りカム機構付近の拡
大側面図、第5図は芝刈機の側面図である。 (16)……ブレーキ装置、(17)……支軸、(18)……
解除ピン、(20)……連結部、(24)……ブレーキペダ
ル、(26)……フレーム、(27),(28)……横フレー
ム部、(29)……縦フレーム部、(30)……中継アー
ム、(31)……スリット、(C)……解除機構、(D)
……維持機構。
1 shows an embodiment of a vehicle speed maintaining structure for a work vehicle according to the present invention. FIG. 1 is a partially cutaway front view of a transmission speed adjusting operation portion, FIG. 2 is a side view of a release mechanism, and FIG. FIG. 4 is a side view of the transmission speed adjusting operation portion, FIG. 4 is an enlarged side view near the riding cam mechanism, and FIG. 5 is a side view of the lawn mower. (16) …… Brake device, (17) …… Spindle, (18) ……
Release pin, (20) …… connecting part, (24) …… brake pedal, (26) …… frame, (27), (28) …… horizontal frame part, (29) …… vertical frame part, (30 ) …… Relay arm, (31) …… Slit, (C) …… Release mechanism, (D)
...... Maintenance mechanism.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】車速を設定値に保つ速度維持機構(D)の
作動をブレーキペダル(24)の踏み込み操作に伴って解
除する解除機構(C)を備えるとともに、この解除機構
(C)を、断面コ字状機体フレーム(26)の上下横フレ
ーム(27),(28)の支持孔に回動自在に貫通させた支
軸(17)に、前記ブレーキペダル(24)からの操作力を
ブレーキ装置(16)へ伝達するための中継アーム(30)
と、前記速度維持機構(D)を操作する解除ピン(18)
とを固設して構成してある作業車の車速維持構造であっ
て、前記解除ピン(18)を、前記フレーム(26)の縦フ
レーム部(29)に形成した前記支軸(17)の回動方向に
沿って長いスリット(31)を貫通突出する状態で前記支
軸(17)から突設し、この突出端に前記速度維持機構
(D)を操作する連結部(20)を設けることによって、
前記解除ピン(18)で前記支軸(17)の上下方向の位置
決めをしてある作業車の車速維持構造。
1. A release mechanism (C) for releasing the operation of a speed maintaining mechanism (D) for keeping a vehicle speed at a set value in accordance with a depression operation of a brake pedal (24), and the release mechanism (C) The operation force from the brake pedal (24) is braked on a support shaft (17) rotatably penetrating the support holes of the upper and lower horizontal frames (27) and (28) of the U-shaped body frame (26). Relay arm (30) for transmission to device (16)
And a release pin (18) for operating the speed maintaining mechanism (D).
In the vehicle speed maintaining structure for a work vehicle, which is configured by fixing and, the release pin (18) of the support shaft (17) formed in the vertical frame portion (29) of the frame (26) is provided. To provide a connecting portion (20) for operating the speed maintaining mechanism (D) at the protruding end so as to project from the support shaft (17) so as to project through a long slit (31) along the rotation direction. By
A vehicle speed maintaining structure for a work vehicle in which the support shaft (17) is vertically positioned by the release pin (18).
JP1763689U 1989-02-16 1989-02-16 Work vehicle speed maintenance structure Expired - Lifetime JPH0721381Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1763689U JPH0721381Y2 (en) 1989-02-16 1989-02-16 Work vehicle speed maintenance structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1763689U JPH0721381Y2 (en) 1989-02-16 1989-02-16 Work vehicle speed maintenance structure

Publications (2)

Publication Number Publication Date
JPH02108619U JPH02108619U (en) 1990-08-29
JPH0721381Y2 true JPH0721381Y2 (en) 1995-05-17

Family

ID=31231597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1763689U Expired - Lifetime JPH0721381Y2 (en) 1989-02-16 1989-02-16 Work vehicle speed maintenance structure

Country Status (1)

Country Link
JP (1) JPH0721381Y2 (en)

Also Published As

Publication number Publication date
JPH02108619U (en) 1990-08-29

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