JP2003070307A - Sensor for hitch angle of tractor - Google Patents
Sensor for hitch angle of tractorInfo
- Publication number
- JP2003070307A JP2003070307A JP2001267630A JP2001267630A JP2003070307A JP 2003070307 A JP2003070307 A JP 2003070307A JP 2001267630 A JP2001267630 A JP 2001267630A JP 2001267630 A JP2001267630 A JP 2001267630A JP 2003070307 A JP2003070307 A JP 2003070307A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- hitch
- adjusting plate
- locking frame
- angle
- 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.)
- Granted
Links
Landscapes
- Guiding Agricultural Machines (AREA)
Abstract
Description
【００１】[001]
【発明の属する技術分野】本発明はトラクターなどの牽
引車に牽引される作業機のヒッチ角センサーに関し、詳
細には牽引車のドローバーと作業機のヒッチ間に架設さ
れ、旋回する牽引車のドローバーに対する作業機のヒッ
チの連結角度を検出して作業機の操舵を自動制御するヒ
ッチ角センサーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hitch angle sensor for a working machine towed by a towing vehicle such as a tractor, and more particularly to a drawbar for a towing vehicle installed between a drawbar of the towing vehicle and a hitch of the working machine. To a hitch angle sensor for automatically controlling the steering of the work machine by detecting the connection angle of the work machine hitch to
【００２】[002]
【発明の技術背景】図４に示すように、トラクターなど
の牽引車１とカルチベータなどの作業機２を連結した農
業機械は、全体のホイルベースが長くなるため、旋回半
径を小さくするためには牽引車１の旋回に連動して作業
機２の車輪３に操舵性を与える必要がある。2. Description of the Related Art As shown in FIG. 4, an agricultural machine in which a towing vehicle 1 such as a tractor and a working machine 2 such as a cultivator are connected has a long wheel base. It is necessary to give steering properties to the wheels 3 of the work implement 2 in association with the turning of the towing vehicle 1.
【００３】このような操舵機構には牽引車１の操舵に連
動して作業機２の車輪３を牽引車１と同じ方向へ操舵す
るものがある。また、特許第２００３６３６号のよう
に、牽引車１が旋回する際に、旋回初期は作業機２の車
輪３を直進方向へ操舵し、牽引車１と作業機２が直列に
近くなった時点で作業機２の車輪３を旋回方向へ急激に
方向転換させることによって、作業機２が小さい半径で
旋回できるようにしたものもある。As such a steering mechanism, there is a steering mechanism that interlocks with the steering of the towing vehicle 1 to steer the wheels 3 of the working machine 2 in the same direction as the towing vehicle 1. Further, as in Japanese Patent No. 20033636, when the towing vehicle 1 turns, at the beginning of turning, the wheels 3 of the work machine 2 are steered in a straight direction, and when the towing vehicle 1 and the work machine 2 are close to series. There is also a machine in which the wheels 3 of the working machine 2 are rapidly turned to the turning direction so that the working machine 2 can turn with a small radius.
【００４】このように、牽引車１の旋回に連動して作業
機２の車輪３を自動制御するために、図５、図６に示す
ように、牽引車１のドローバー４と作業機２のヒッチ５
の連結部に、旋回時のドローバー４とヒッチ５の角度変
位を検出し、その検出信号で作業機２の車輪３の操舵機
構（図は省略）を制御するヒッチ角センサー６が使用さ
れている。Thus, in order to automatically control the wheels 3 of the working machine 2 in conjunction with the turning of the towing vehicle 1, as shown in FIGS. 5 and 6, the drawbar 4 of the towing vehicle 1 and the working machine 2 are separated. Hitch 5
A hitch angle sensor 6 that detects the angular displacement of the drawbar 4 and the hitch 5 at the time of turning and controls the steering mechanism (not shown) of the wheels 3 of the working machine 2 by the detection signal is used in the connecting part of the. .
【００５】この種のヒッチ角センサー６は、図６に示す
ように、後述のカムを回転可能に収納し、このカムのカ
ム面に摺接してＯＮ・ＯＦＦ信号を発信するスイッチを
固設したスイッチボックス７と、スイッチボックス７か
ら突出させたカム回転軸に固定した係止フレーム８で構
成されており、図５に示すように、スイッチボックス７
を作業機のヒッチ５に固定するとともに、係止フレーム
８を牽引車のドローバー４に固定し、牽引車１の旋回に
伴うドローバー４とヒッチ５の角度変位をスイッチで検
出して、そのＯＮ・ＯＦＦ信号で作業機２の車輪３の操
舵機構を自動的に制御するようになっている。As shown in FIG. 6, this type of hitch angle sensor 6 accommodates a cam, which will be described later, rotatably, and has a fixed switch for transmitting an ON / OFF signal by slidingly contacting the cam surface of the cam. It is composed of a switch box 7 and a locking frame 8 fixed to the cam rotating shaft protruding from the switch box 7, and as shown in FIG.
Is fixed to the hitch 5 of the working machine, the locking frame 8 is fixed to the drawbar 4 of the towing vehicle, the angular displacement of the drawbar 4 and the hitch 5 accompanying the turning of the towing vehicle 1 is detected by the switch, and the ON The OFF signal automatically controls the steering mechanism of the wheels 3 of the work machine 2.
【００６】そして、従来の上記ヒッチ角センサーは図６
のように、スイッチボックス７内に収納したカムの回転
軸にドローバー側の係止フレーム８を一体に固定した構
造になっている。The conventional hitch angle sensor shown in FIG.
As described above, the drawbar side locking frame 8 is integrally fixed to the rotary shaft of the cam housed in the switch box 7.
【００７】[0097]
【発明が解決しようとする課題】ところで、圃場におい
て、牽引車１の運転席後方にある作業機２の車輪３の軌
道を気にしないで作業するには、牽引車１と作業機２の
相互の一側車輪（左側又は右側車輪）が直線状に並び同
じ軌道で走行するようにする必要があるが、牽引車１と
作業機２の車幅は機種によって異なるため、前記の一側
車輪を同じ軌道で走行させるにはドローバーに対してヒ
ッチ５を直角に連結することができない場合が多い。そ
のような場合にはシリンダー等の強制手段を用いてヒッ
チ５を予め傾斜させた姿勢で連結しなければならない。By the way, in the field, in order to work without worrying about the track of the wheels 3 of the working machine 2 behind the driver's seat of the towing vehicle 1, the towing vehicle 1 and the working machine 2 need to work together. It is necessary to arrange one side wheels (left side or right side wheels) in a straight line so that they travel on the same track. However, since the vehicle widths of the towing vehicle 1 and the working machine 2 differ depending on the model, In order to run on the same track, it is often impossible to connect the hitch 5 at a right angle to the drawbar. In such a case, the hitch 5 must be connected in a pre-inclined posture by using a forcing means such as a cylinder.
【００８】従って、前記のように、カム回転軸とドロー
バー側の係止フレームを一体固定した従来のヒッチ角セ
ンサーでヒッチを所定の初期傾斜角度で連結すると、そ
の傾斜角度分だけカムがすでに回転しているので、牽引
車１の旋回時に正確な旋回角度を検出することができな
くなるという問題があった。Therefore, as described above, when the hitch is connected at a predetermined initial tilt angle with the conventional hitch angle sensor in which the cam rotation shaft and the drawbar side locking frame are integrally fixed, the cam has already rotated by that tilt angle. Therefore, there is a problem that an accurate turning angle cannot be detected when the towing vehicle 1 turns.
【００９】従って、本発明の目的は、ヒッチとドローバ
ーの角度、すなわち、スイッチボックスと係止フレーム
の向きがどのように違ってもスイッチボックスのカムを
常にスイッチの基準位置（０角度位置）に補正して係止
フレームに固定することができるヒッチ角センサーを提
供することにある。Therefore, an object of the present invention is to keep the cam of the switch box always at the reference position (0 angle position) of the switch, no matter how the angles of the hitch and drawbar, that is, the directions of the switch box and the locking frame are different. It is to provide a hitch angle sensor that can be corrected and fixed to a locking frame.
【０１０】[0101]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、外部に突出させた回転軸で回転される
カムとこのカムのカム面に摺接して作動するスイッチを
収納し、作業機のヒッチ又は牽引車のドローバーの一方
の部材に固定されるスイッチボックスと；該スイッチボ
ックスから突出させたカム回転軸に連動可能に連結さ
れ、前記ヒッチ又はドローバーの他方の部材に結合され
る係止フレームと；を有し、前記ヒッチとドローバーの
角度変位に伴うカムとスイッチの回転角の位相でＯＮ・
ＯＦＦ制御信号を発信するヒッチ角センサーであって、
前記カム回転軸にカム角調整プレートを一体回転可能に
固定するとともに、前記係止フレームをカム回転軸又は
カム角調整プレートに対して回動可能に係着し、スイッ
チボックスに対するカム角度を基準位置に設定して前記
カム角調整プレートと係止フレーム結合できるようにし
たことを特徴とする。In order to achieve the above object, the present invention accommodates a cam which is rotated by a rotary shaft protruding to the outside and a switch which operates by slidingly contacting the cam surface of the cam. A switch box fixed to one member of a hitch of a work machine or a drawbar of a towing vehicle; coupled to a cam rotation shaft projecting from the switch box so as to be interlockable, and connected to the other member of the hitch or drawbar And a locking frame; which is ON at the phase of the rotation angle of the cam and the switch accompanying the angular displacement of the hitch and drawbar.
A hitch angle sensor that transmits an OFF control signal,
The cam angle adjusting plate is integrally rotatably fixed to the cam rotating shaft, and the locking frame is rotatably attached to the cam rotating shaft or the cam angle adjusting plate so that the cam angle with respect to the switch box is a reference position. Is set so that the cam angle adjusting plate and the locking frame can be connected.
【０１１】本発明によるより好ましいヒッチ角センサー
は、上記の構成において、スイッチボックスから突出さ
せたカム回転軸にカム角調整プレートを固定するととも
に、前記係止フレームをカム回転軸に回動自在に連結
し、前記係止フレーム面に係着した結合ピンを、該ピン
の回動軌道に沿って形成したカム角調整プレートの円弧
状長孔に係合して、カム角調整プレートと前記係止フレ
ームとを角度変位可能に固定できるようにしたことを特
徴とする。In a more preferable hitch angle sensor according to the present invention, in the above structure, the cam angle adjusting plate is fixed to the cam rotation shaft protruding from the switch box, and the locking frame is rotatable about the cam rotation shaft. The coupling pin, which is connected and fixed to the locking frame surface, is engaged with the arc-shaped elongated hole of the cam angle adjusting plate formed along the rotation trajectory of the pin to lock the cam angle adjusting plate and the locking. It is characterized in that it can be fixed to the frame so that it can be angularly displaced.
【０１２】[0112]
【発明の実施の形態】以下に、本発明の実施形態を図に
基づいて説明する。図１は本発明のヒッチ角センサー６
の縦断面を示すもので、前記と同様に、通常は作業機２
のヒッチ５に固定されるスイッチボックス７と牽引車１
のドローバー４に固定される係止フレーム８を備えてい
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a hitch angle sensor 6 of the present invention.
A vertical cross section of the work machine 2 is shown in the same manner as above.
Switch box 7 fixed to the hitch 5 and the towing vehicle 1
The lock frame 8 is fixed to the drawbar 4 of FIG.
【０１３】スイッチボックス７はその内部に、回転軸９
によって回転されるカム１０を回転軸９を上方へ突出さ
せて回転可能に収納してあるとともに、このカム１０の
カム凹凸面に摺接して作動信号を発信するスイッチ１１
が固定されており、取付ブラケット１２によりヒッチ５
に対して平行に結合されるようになっている。図中、参
照符号１３はスイッチ１１のコードである。The switch box 7 has a rotary shaft 9 inside.
The cam 10 rotated by the rotary shaft 9 is rotatably housed so that the cam 10 is slidably contacted with the cam uneven surface of the cam 10 to transmit an operation signal.
Is fixed, and the hitch 5 is fixed by the mounting bracket 12.
It is designed to be connected in parallel with. In the figure, reference numeral 13 is a code of the switch 11.
【０１４】カム１０の回転軸９はスイッチボックス７の
上方へ延び、その突出軸体にカム角調整プレート１４が
水平且つ一体回転可能に結合されている。The rotating shaft 9 of the cam 10 extends above the switch box 7, and the cam angle adjusting plate 14 is horizontally and integrally rotatably coupled to the protruding shaft thereof.
【０１５】係止フレーム８はカム角調整プレート１４と
平行な水平プレート部１５を有し、この水平プレート部
１５の一端を上方へＬ字形に折り曲げて取付ブラケット
１６を形成するとともに、この取付ブラケット１６の上
部に、ドローバー４への固定具１７を具備している。上
記係止フレーム８は、カム角調整プレート１４の上面か
ら突出した軸に水平プレート部１５を回動可能に係着し
てある。すなわち、係止フレーム８は、カム１０及びこ
れと一体のカム角調整プレート１４と同芯に配置され、
且つ、カム１０及びカム角調整プレート１４から独立し
て回転できるようにしてカム回転軸９に係着されてい
る。The locking frame 8 has a horizontal plate portion 15 which is parallel to the cam angle adjusting plate 14, and one end of the horizontal plate portion 15 is bent upward in an L shape to form a mounting bracket 16, and the mounting bracket 16 is formed. A fixture 17 to the drawbar 4 is provided on the upper part of the device 16. The locking frame 8 has a horizontal plate portion 15 rotatably attached to a shaft protruding from the upper surface of the cam angle adjusting plate 14. That is, the locking frame 8 is arranged concentrically with the cam 10 and the cam angle adjusting plate 14 integral therewith,
Further, it is attached to the cam rotation shaft 9 so as to be able to rotate independently of the cam 10 and the cam angle adjusting plate 14.
【０１６】係止フレーム８は組付け構造上は独立して回
動するように係着されているが、ドローバー４が旋回し
たときに、これと連動してカム１０を回転させるもので
ある。このため、係止フレーム８とカム角調整プレート
１４には両部材を適宜角度に変位して結合する着脱手段
１８が設けられている。Although the engaging frame 8 is attached so as to rotate independently in terms of the assembling structure, when the draw bar 4 turns, it interlocks with this and rotates the cam 10. For this reason, the locking frame 8 and the cam angle adjusting plate 14 are provided with a detaching means 18 for coupling both members by appropriately displacing them.
【０１７】図の実施例の着脱手段１８は、係止フレーム
８に係着した結合ピン１８ａ（ボルト、ナット）と、こ
の結合ピン１８ａの回動軌道に沿ってカム角調整プレー
ト１４に形成した円弧状長孔１８ｂで構成されており、
係止フレーム８の結合ピン１８ａをカム角調整プレート
１４の長孔１８ｂに貫通させ、結合ピン１８ａを適宜の
長孔位置でカム角調整プレート１４に固定することによ
り、係止フレーム８とカム角調整プレート１４が所望の
角度で一体結合される。図の実施例とは逆に、カム角調
整プレート１４に結合ピン１８ａを設け、係止フレーム
８に円弧状長孔１８ｂを形成してもよい。また、着脱手
段１８は上記の構造に限らず、係止フレーム８とカム角
調整プレート１４を所望の角度に変位して結合・離脱さ
せるものであればよい。The attaching / detaching means 18 of the illustrated embodiment is formed on the cam angle adjusting plate 14 along the connecting pin 18a (bolts, nuts) fixed to the locking frame 8 and the orbit of the connecting pin 18a. It is composed of arcuate elongated holes 18b,
By connecting the connecting pin 18a of the locking frame 8 to the elongated hole 18b of the cam angle adjusting plate 14 and fixing the connecting pin 18a to the cam angle adjusting plate 14 at an appropriate elongated hole position, the engaging frame 8 and the cam angle are fixed. The adjusting plate 14 is integrally connected at a desired angle. Contrary to the illustrated embodiment, the cam angle adjusting plate 14 may be provided with the connecting pin 18a and the locking frame 8 may be formed with the arcuate elongated hole 18b. Further, the attaching / detaching means 18 is not limited to the above-mentioned structure, and may be any means as long as the engaging frame 8 and the cam angle adjusting plate 14 are displaced to a desired angle to be coupled / disengaged.
【０１８】かくして、本発明のヒッチ角センサー６は、
着脱手段１８の結合を解いた状態では、図２に示すよう
に、スイッチボックス７、カム角調整プレート１４、係
止フレーム８は中心点を共通にして矢印Ａ、Ｂ、Ｃのよ
うに各々独立の回動が可能となり、着脱手段１８を所望
の位置で結合するとカム角調整プレート１４と係止フレ
ーム８がスイッチボックス７に対して一体となって回動
する構造になっている。Thus, the hitch angle sensor 6 of the present invention is
In the state where the attachment / detachment means 18 is released, as shown in FIG. 2, the switch box 7, the cam angle adjusting plate 14, and the locking frame 8 have their center points in common and are independent from each other as indicated by arrows A, B, and C. When the attachment / detachment means 18 is connected at a desired position, the cam angle adjusting plate 14 and the locking frame 8 are integrally rotated with respect to the switch box 7.
【０１９】ヒッチ角センサー６をドローバー４とヒッチ
５の連結部に取付けて使用する際は、スイッチボックス
７、係止フレーム８をヒッチ５に上下又は左右に平行に
固定するとともに、カム角調整プレート１４との結合を
解消した状態でドローバー４に固定あるいは係止する。
次いで、カム角調整プレート１４とスイッチボックス７
の軸線を合致させた状態で、カム角調整プレート１４と
係止フレーム８を着脱手段１８によって結合する。この
状態では、カム１０と一体のカム角調整プレート１４は
スイッチボックス７と同一の軸線に向けて係止フレーム
８に固定されるので、ヒッチ５がドローバー４にどのよ
うな初期設定角度で連結されていても、初期設定角度の
位置ではスイッチ１１とカム１０は常に０基準位置に設
定されることになる。When the hitch angle sensor 6 is attached to the connecting portion of the drawbar 4 and the hitch 5 and used, the switch box 7 and the locking frame 8 are fixed to the hitch 5 in the vertical and horizontal directions and the cam angle adjusting plate. It is fixed or locked to the drawbar 4 in a state where the connection with 14 is released.
Next, the cam angle adjusting plate 14 and the switch box 7
The cam angle adjusting plate 14 and the locking frame 8 are connected by the attaching / detaching means 18 in a state where the axes of the above are matched. In this state, the cam angle adjusting plate 14 integrated with the cam 10 is fixed to the locking frame 8 toward the same axis as the switch box 7, so that the hitch 5 is connected to the drawbar 4 at any initial setting angle. However, at the position of the initial set angle, the switch 11 and the cam 10 are always set to the 0 reference position.
【０２０】カム角調整プレート１４とスイッチボックス
７の軸線位置合わせは目視でもよいが、カム角調整プレ
ート１４とスイッチボックス７の横幅を同一又は近似の
寸法に形成することにより、手の感触で容易に位置合わ
せが可能となる。また、カム角調整プレート１４とスイ
ッチボックス７相互間に位置合わせの指示部材と基準点
を設けてもよい。The axial alignment of the cam angle adjusting plate 14 and the switch box 7 may be visually inspected, but by forming the cam angle adjusting plate 14 and the switch box 7 to have the same or similar lateral widths, it is easy to feel by hand. It is possible to align with. Further, a positioning instruction member and a reference point may be provided between the cam angle adjusting plate 14 and the switch box 7.
【０２１】図の実施例はスイッチボックス７をヒッチ５
側に固定し、係止フレーム８側に係着する場合を例示し
たが、これとは逆に取付けてもよい。In the illustrated embodiment, the switch box 7 is hitch 5
Although the case where it is fixed to the side and engaged to the side of the locking frame 8 is illustrated, it may be attached in the opposite manner.
【０２２】[0222]
【効果】以上のように、本発明のヒッチ角センサーは、
ヒッチの初期設定角度に応じてカム角調整プレートを介
してスイッチボックスとスイッチカムの位相を合わせた
上で、カムと係止フレームが連結されるようにしたの
で、ヒッチの傾斜角度、係止フレームの姿勢に関係な
く、初期設定位置のスイッチが、常に且つ自動的に０基
準位置に設定される。従って、ドローバー旋回時のヒッ
チ角変化を正確に感知し、円滑な自動操舵制御が保証さ
れる。また、複雑な補正が不要になるので取付け作業が
容易になる。[Effect] As described above, the hitch angle sensor of the present invention is
Since the phase of the switch box and the switch cam are matched via the cam angle adjustment plate according to the initial set angle of the hitch, the cam and the locking frame are connected, so the tilt angle of the hitch, the locking frame The switch at the initial setting position is always and automatically set to the 0 reference position regardless of the posture. Therefore, a change in the hitch angle during turning of the drawbar is accurately sensed, and smooth automatic steering control is guaranteed. Moreover, since complicated correction is unnecessary, the mounting work becomes easy.
【図１】 本発明によるヒッチ角センサーの縦断面図FIG. 1 is a vertical sectional view of a hitch angle sensor according to the present invention.
【図２】 本発明によるヒッチ角センサーの各部材の動
きを示す取付説明図FIG. 2 is an attachment explanatory view showing the movement of each member of the hitch angle sensor according to the present invention.
【図３】 本発明によるヒッチ角センサーの取付姿勢を
例示する平面図FIG. 3 is a plan view illustrating a mounting posture of a hitch angle sensor according to the present invention.
【図４】 牽引車と作業機を連結した農業機械の概略平
面図FIG. 4 is a schematic plan view of an agricultural machine in which a towing vehicle and a work machine are connected to each other.
【図５】 牽引車と作業機の連結部拡大図[Fig. 5] Enlarged view of the connecting portion between the towing vehicle and the working machine
【図６】 従来のヒッチ角センサーの斜視図FIG. 6 is a perspective view of a conventional hitch angle sensor.
【符号の説明】 １…牽引車 ２…作業機 ３…車輪 ４…ドローバー ５…ヒッチ ６…ヒッチ角センサー ７…スイッチボックス ８…係止フレーム ９…回転軸 １０…カム １１…スイッチ １２、１６…取付ブラケット １３…コード １４…カム角調整プレート １５…水平プレート部 １７…固定具 １８…着脱手段 １８ａ…結合ピン １８ｂ…円弧状長孔[Explanation of symbols] 1 ... towing vehicle 2 ... Working machine 3 ... wheels 4 ... Drawbar 5 ... hitch 6 ... Hitch angle sensor 7 ... Switch box 8 ... Locking frame 9 ... Rotary axis 10 ... cam 11 ... switch 12, 16 ... Mounting bracket 13 ... Code 14 ... Cam angle adjustment plate 15 ... Horizontal plate 17 ... Fixing device 18 ... detachment means 18a ... connecting pin 18b ... Arc-shaped long hole
【整理番号】ＰＡＳ００１―０２３[Reference number] PAS001-023
【手続補正書】[Procedure amendment]
【提出日】平成１４年６月１３日（２００２．６．１
３）[Submission date] June 13, 2002 (2002.6.1)
3)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０１０[Correction target item name] 010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０１０】[0101]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、外部に突出させた回転軸で回転される
カムとこのカムのカム面に摺接して作動するスイッチを
収納し、作業機のヒッチ又は牽引車のドローバーの一方
の部材に固定されるスイッチボックスと；該スイッチボ
ックスから突出させたカム回転軸に連動可能に連結さ
れ、前記ヒッチ又はドローバーの他方の部材に結合され
る係止フレームと；を有し、前記ヒッチとドローバーの
角度変位に伴うカムとスイッチの回転角の位相でＯＮ・
ＯＦＦ制御信号を発信するヒッチ角センサーであって、
前記カム回転軸にカム角調整プレートを一体回転可能に
固定するとともに、前記係止フレームをカム回転軸又は
カム角調整プレートに対して回動可能に係着し、スイッ
チボックスに対するカム角度を基準位置に設定して前記
カム角調整プレートと係止フレームを任意の回転角で結
合できるようにしたことを特徴とする。In order to achieve the above object, the present invention accommodates a cam which is rotated by a rotary shaft protruding to the outside and a switch which operates by slidingly contacting the cam surface of the cam. A switch box fixed to one member of a hitch of a work machine or a drawbar of a towing vehicle; coupled to a cam rotation shaft projecting from the switch box so as to be interlockable, and connected to the other member of the hitch or drawbar And a locking frame; which is ON at the phase of the rotation angle of the cam and the switch accompanying the angular displacement of the hitch and drawbar.
A hitch angle sensor that transmits an OFF control signal,
The cam angle adjusting plate is integrally rotatably fixed to the cam rotating shaft, and the locking frame is rotatably attached to the cam rotating shaft or the cam angle adjusting plate so that the cam angle with respect to the switch box is a reference position. Is set so that the cam angle adjusting plate and the locking frame can be connected at an arbitrary rotation angle .
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2B043 AA04 AB08 BA03 BB01 BB20 DB25 EA04 EA08 EA16 EB02 EB07 EB13 EB21 ED02 ED13 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 2B043 AA04 AB08 BA03 BB01 BB20 DB25 EA04 EA08 EA16 EB02 EB07 EB13 EB21 ED02 ED13
Claims (2)
とこのカムのカム面に摺接して作動するスイッチを収納
し、作業機のヒッチ又は牽引車のドローバーの一方の部
材に固定されるスイッチボックスと；該スイッチボック
スから突出させたカム回転軸に連動可能に連結され、前
記ヒッチ又はドローバーの他方の部材に結合される係止
フレームと；を有し、前記ヒッチとドローバーの角度変
位に伴うカムとスイッチの回転角の位相でＯＮ・ＯＦＦ
制御信号を発信するヒッチ角センサーであって、前記カ
ム回転軸にカム角調整プレートを一体回転可能に固定す
るとともに、前記係止フレームをカム回転軸又はカム角
調整プレートに対して回動可能に係着し、スイッチボッ
クスに対するカム角度を基準位置に設定して前記カム角
調整プレートと係止フレーム結合できるようにしたこと
を特徴とするヒッチ角センサー1. A cam which is rotated by a rotating shaft protruding to the outside and a switch which operates by slidingly contacting a cam surface of the cam are housed and fixed to one member of a hitch of a working machine or a drawbar of a towing vehicle. A switch box; and a locking frame that is coupled to a cam rotating shaft protruding from the switch box and is coupled to the other member of the hitch or drawbar, and the angular displacement of the hitch and drawbar. ON / OFF depending on the phase of cam and switch rotation angle
A hitch angle sensor for transmitting a control signal, wherein a cam angle adjusting plate is integrally rotatably fixed to the cam rotating shaft, and the locking frame is rotatable with respect to the cam rotating shaft or the cam angle adjusting plate. A hitch angle sensor, which is engaged with the cam box and sets the cam angle to the switch box at a reference position so that the cam angle adjusting plate and the locking frame can be coupled.
軸にカム角調整プレートを固定するとともに、前記係止
フレームをカム回転軸に回動自在に連結し、前記係止フ
レーム面に係着した結合ピンを、該ピンの回動軌道に沿
って形成したカム角調整プレートの円弧状長孔に係合し
て、カム角調整プレートと前記係止フレームとを角度変
位可能に固定できるようにしたことを特徴とする請求項
１記載のヒッチ角センサー2. A coupling which fixes a cam angle adjusting plate to a cam rotation shaft protruding from a switch box, rotatably connects the locking frame to the cam rotation shaft, and engages with the locking frame surface. The pin is engaged with an arcuate elongated hole of the cam angle adjusting plate formed along the rotation path of the pin so that the cam angle adjusting plate and the locking frame can be angularly displaceably fixed. The hitch angle sensor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001267630A JP3502074B2 (en) | 2001-09-04 | 2001-09-04 | Tow truck hitch angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001267630A JP3502074B2 (en) | 2001-09-04 | 2001-09-04 | Tow truck hitch angle sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003070307A true JP2003070307A (en) | 2003-03-11 |
| JP3502074B2 JP3502074B2 (en) | 2004-03-02 |
Family
ID=19093735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001267630A Expired - Fee Related JP3502074B2 (en) | 2001-09-04 | 2001-09-04 | Tow truck hitch angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3502074B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727676A (en) * | 2020-12-31 | 2021-04-30 | 国投白银风电有限公司 | Device for quickly adjusting yaw cam switch of wind generating set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4494506B1 (en) * | 2009-03-23 | 2010-06-30 | 安久津 義人 | Hitch angle sensor for towing machines |
-
2001
- 2001-09-04 JP JP2001267630A patent/JP3502074B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727676A (en) * | 2020-12-31 | 2021-04-30 | 国投白银风电有限公司 | Device for quickly adjusting yaw cam switch of wind generating set |
| CN112727676B (en) * | 2020-12-31 | 2023-01-03 | 国投白银风电有限公司 | Device for quickly adjusting yaw cam switch of wind generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3502074B2 (en) | 2004-03-02 |
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