JPH07255215A - Connecting device for working machine - Google Patents

Connecting device for working machine

Info

Publication number
JPH07255215A
JPH07255215A JP5644494A JP5644494A JPH07255215A JP H07255215 A JPH07255215 A JP H07255215A JP 5644494 A JP5644494 A JP 5644494A JP 5644494 A JP5644494 A JP 5644494A JP H07255215 A JPH07255215 A JP H07255215A
Authority
JP
Japan
Prior art keywords
working machine
tractor
depth sensor
hitch frame
shaft
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
JP5644494A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Ono
弘喜 小野
Naohiko Ishii
尚彦 石井
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.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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 Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP5644494A priority Critical patent/JPH07255215A/en
Publication of JPH07255215A publication Critical patent/JPH07255215A/en
Pending legal-status Critical Current

Links

Landscapes

  • Agricultural Machines (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

PURPOSE:To obtain a connecting device so designed that signals such as from a plowing depth sensor mounted on a working machine are ensured to transmit to a controller on the tractor side without involving the attaching/detaching operations for sockets set up on the way of a harness to facilitate the matching operation between the tractor and the working machine. CONSTITUTION:In the device so designed that a working machine 16 is connected to the rear of a tractor 1 and supported in a vertically movable way and also the tractor 1 and the working machine 16 are interlockingly connected to each other via a universal joint shaft 20, the working machine 16 is mounted with a plowing depth sensor 33, and the signal line for this sensor 33 is set up in a revolving power transmission route including the universal joint shaft 20.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、トラクタの後部にト
ップリンクとロアリンクを介して装着したヒッチ枠に、
作業機を着脱可能に装着したトラクタの作業機連結装置
に関する。
BACKGROUND OF THE INVENTION This invention relates to a hitch frame mounted on a rear portion of a tractor through a top link and a lower link,
The present invention relates to a work machine connecting device for a tractor to which a work machine is detachably mounted.

【0002】[0002]

【従来技術】従来、トラクタの後部にヒッチ枠を取り付
けてこのヒッチ枠で作業機を連結し、この作業機には耕
深センサを設けてその信号ラインをハ−ネスにて本機側
のコントロ−ラに送信するように構成したものが知られ
ている。
2. Description of the Related Art Conventionally, a hitch frame is attached to the rear part of a tractor and a working machine is connected by this hitch frame. This working machine is provided with a tilling depth sensor, and its signal line is connected to the controller on the machine side by a harness. -It is known to be configured to send to La.

【0003】[0003]

【発明が解決しようとする問題点】ところで、前記の従
来装置は、本機と作業機とを脱着する際にハ−ネスの途
中に設けられた雄雌のソケットをまず着脱し、その後、
作業機を着脱しなければならず、この操作が煩雑でこの
操作を忘れるとソケットあるいはハ−ネスを破損すると
いう問題点があった。
By the way, in the above-mentioned conventional apparatus, when the machine and the working machine are detached, the male and female sockets provided in the middle of the harness are first attached and detached, and then,
Since the working machine has to be attached and detached, and this operation is complicated, there is a problem that the socket or the harness is damaged if this operation is forgotten.

【0004】[0004]

【課題を解決するための技術手段】この発明は前記した
問題点に鑑みて提案するものであって、このため、次の
ような技術的手段を講じた。即ち、トラクタ1の後部に
トップリンク4とロアリンク5を介して連結したヒッチ
枠8に作業機16を着脱自在に連結し、略同時にトラク
タ1のPTO軸3と作業機側入力軸22とをヒッチ枠8
に支持された自在継手軸20により接合してなる作業機
連結装置において、前記作業機16側に耕深センサ33
を設け、この耕深センサ33の信号伝達ラインを回転動
力伝達経路中に設けたことを特徴とする作業機連結装置
の構成とする。
The present invention has been proposed in view of the above-mentioned problems, and therefore, the following technical means have been taken. That is, the working machine 16 is detachably connected to the hitch frame 8 connected to the rear portion of the tractor 1 via the top link 4 and the lower link 5, and the PTO shaft 3 of the tractor 1 and the working machine side input shaft 22 are substantially simultaneously connected. Hitch frame 8
In the working machine coupling device joined by the universal joint shaft 20 supported by the working machine 16, a working depth sensor 33 is provided on the working machine 16 side.
And the signal transmission line of the working depth sensor 33 is provided in the rotary power transmission path.

【0005】[0005]

【実施例】以下、図面に基づきこの発明の実施例を説明
する。まず、構成から説明すると、1はトラクタで、ミ
ッションケ−ス2の後部に作業機を駆動するためのPT
O軸3を突出軸架している。4はトップリンク、5はロ
アリンクで、これらのトップリンク4とロアリンク5と
からなる3点リンク機構7の後部には、背面視三角形の
ヒッチ枠8を連結している。
Embodiments of the present invention will be described below with reference to the drawings. First, the structure will be described. 1 is a tractor, and a PT for driving a working machine at the rear of the mission case 2.
The O shaft 3 is mounted on the protruding shaft. 4 is a top link, 5 is a lower link, and a hitch frame 8 having a triangular shape in rear view is connected to a rear portion of a three-point link mechanism 7 including the top link 4 and the lower link 5.

【0006】ヒッチ枠8の上部には作業機16側マスト
10の上部に設けられたトップピン12を下から掬い取
るための上部フック13が固着され、ヒッチ枠8の下部
両側には下部フック14、14が設けられている。1
5、15は下部フック14、14に枢着されたロックア
−ムである。作業機16に設けたピン18、18を前記
下部フック14、14の係止孔部に後方から嵌入させ、
ロックア−ム15、15を回動させて作業機16をヒッ
チ枠8に連結する。
An upper hook 13 for scooping a top pin 12 provided on an upper portion of a mast 10 on the working machine 16 side is fixed to an upper portion of the hitch frame 8, and a lower hook 14 is provided on both lower sides of the hitch frame 8. , 14 are provided. 1
Reference numerals 5 and 15 are lock arms pivotally attached to the lower hooks 14 and 14. The pins 18, 18 provided on the working machine 16 are fitted into the locking holes of the lower hooks 14, 14 from the rear,
The work arms 16 are connected to the hitch frame 8 by rotating the lock arms 15, 15.

【0007】ロックア−ム15、15は左右が連結され
ており、図1、図2に示すようにハンドル19を操作す
ることによってこれを上下方向に回動させることができ
る。又、前記ヒッチ枠8には自在継手軸20の後部が支
持されており、自在継手軸20の後端部には、作業機1
6の入力軸22が連結されるクラッチ部23が形成され
ている。24は自在継手軸20の外周を覆うジョイント
カバ−である。
The lock arms 15 and 15 are connected to each other at the left and right, and can be rotated in the vertical direction by operating the handle 19 as shown in FIGS. A rear portion of the universal joint shaft 20 is supported by the hitch frame 8, and the working machine 1 is attached to the rear end portion of the universal joint shaft 20.
A clutch portion 23 to which the six input shafts 22 are connected is formed. A joint cover 24 covers the outer circumference of the universal joint shaft 20.

【0008】作業機16について構成を簡単に説明する
と、この実施例では作業機としてロ−タリ耕耘装置16
が用いられており、このロ−タリ耕耘装置16は耕耘部
26を覆う主カバ−27、主カバ−27の後部に回動自
由に枢着されたリヤカバ−28、入力軸22を軸架して
いるギヤボックス32等を有し、主カバ−27の後上部
にはリヤカバ−28の前後揺動角度を検出する耕深セン
サ33が設けられている。
The construction of the working machine 16 will be briefly described. In this embodiment, the rotary tiller 16 is used as the working machine.
The rotary tiller 16 has a main cover 27 that covers the cultivating portion 26, a rear cover 28 that is pivotally attached to the rear of the main cover 27, and an input shaft 22. The main cover 27 has a gear box 32 and the like, and a plowing depth sensor 33 for detecting the longitudinal swing angle of the rear cover 28 is provided at the upper rear portion of the main cover 27.

【0009】耕深センサ33が検出した耕深変化は電気
信号として取り出され、ハ−ネス34を介してトラクタ
1本機側のコントロ−ラ35側へ送信され、その結果、
ロ−タリ耕耘装置が昇降動されるが、この電気信号をコ
ントロ−ラ35に伝達する機構を図3、図4に基づいて
説明する。ロ−タリ耕耘装置16の入力軸22は山部3
0aと谷部30bとからなるスプライン軸で構成されて
おり、山部30aは先端以外の部分が僅かに低く構成さ
れ、ここにフランジ37付の絶縁体40を取り付けてい
る。
The change in the working depth detected by the working depth sensor 33 is taken out as an electric signal and transmitted to the controller 35 side of the tractor 1 unit side via the harness 34, and as a result,
The rotary tiller is moved up and down, and the mechanism for transmitting this electric signal to the controller 35 will be described with reference to FIGS. 3 and 4. The input shaft 22 of the rotary tiller 16 is the mountain portion 3.
0a and a valley portion 30b are used for the spline shaft, and the peak portion 30a is configured to have a slightly lower portion except the tip thereof, and the insulator 40 with the flange 37 is attached thereto.

【0010】絶縁体40の外周長手方向にはL字型に折
曲された3極の接触子42が埋め込まれ、これらの接触
子42とフランジ37部に設けた3個の端子44とをハ
−ネス45で接続している。3個の端子44は円形リン
グ状をなし、ロ−タリ耕耘装置16の入力軸22の中心
線に対して同心状に設けられ、その後端部にピン46の
先端が接触する。3本のピン46は前後方向に僅かに移
動できるように構成されており、ピン46は前記耕深セ
ンサ33とハ−ネス34で結ばれている。36はピン4
6に巻き回されたスプリングであって、前記端子44と
ピン46が常時当接するように付勢している。
Three-pole contacts 42 bent in an L shape are embedded in the longitudinal direction of the outer periphery of the insulator 40, and these contacts 42 and the three terminals 44 provided on the flange 37 are closed. -Connected with the nest 45. The three terminals 44 have a circular ring shape and are concentrically provided with respect to the center line of the input shaft 22 of the rotary cultivator 16, and the tips of the pins 46 come into contact with the rear ends thereof. The three pins 46 are configured to be slightly movable in the front-rear direction, and the pins 46 are connected to the plowing depth sensor 33 and the harness 34. 36 is pin 4
The spring is wound around 6, and biases the terminal 44 and the pin 46 so that they are always in contact with each other.

【0011】一方、自在継手軸20の後部ヨ−ク20a
側にも、3個の接触子48が設けられており、図4に示
すように後部ヨ−ク20aの谷部に絶縁体50が取り付
けられ、この絶縁体50に接触子48が埋め込まれてい
る。接触子48は前記接触子42と接触して信号等を受
け取るものであり、これらの接触子48は軸と直交する
方向に僅かに移動できるようにスプリング51で内向き
に付勢されている。
On the other hand, the rear yoke 20a of the universal joint shaft 20.
The three contacts 48 are also provided on the side, the insulator 50 is attached to the valley portion of the rear yoke 20a as shown in FIG. 4, and the contacts 48 are embedded in the insulator 50. There is. The contacts 48 contact the contacts 42 and receive signals and the like, and these contacts 48 are biased inward by a spring 51 so that they can be slightly moved in the direction orthogonal to the axis.

【0012】そして、3本の接触子48はハ−ネス52
を介して前部ヨ−ク20b側の接触子(図示省略)に連
繋されている。電気信号を取り出すための前部ヨ−ク2
0bとPTO軸3との関係は、前述の入力軸22と後部
ヨ−ク20aとの関係と略同様であるから詳細な説明は
省略するが、図5の作動原理図に示すように、耕深セン
サ33からの電気信号は耕深センサ33、ハ−ネス3
4、ピン46、端子44、ハ−ネス45、接触子42、
48、ハ−ネス52を順次経て前部ヨ−ク20b側へ送
られ、さらに、前部ヨ−ク20bに設けた接触子55、
PTO軸3側の接触子56、及びハ−ネス57を経て本
機に装着されたコントロ−ラ35に伝えられるように構
成している。
The three contacts 48 have a harness 52.
Is connected to a contactor (not shown) on the front yoke 20b side. Front yoke 2 for extracting electrical signals
The relationship between 0b and the PTO shaft 3 is substantially the same as the relationship between the input shaft 22 and the rear yoke 20a, so a detailed description thereof will be omitted, but as shown in the operation principle diagram of FIG. The electric signal from the depth sensor 33 is the plowing depth sensor 33, the harness 3
4, pin 46, terminal 44, harness 45, contact 42,
48, the harness 52 in order, and is sent to the front yoke 20b side, and further, the contact 55 provided on the front yoke 20b,
It is configured so that it can be transmitted to the controller 35 mounted on this machine via the contactor 56 on the PTO shaft 3 side and the harness 57.

【0013】なお、この実施例では自在継手軸20の表
面にハ−ネス類を沿わせてPTO軸3の接触子56に信
号を伝える構成としたが、ハ−ネス類を軸内部に埋め込
む形態としても良い。図4の符号60は防水ゴムであっ
て、接触子42、48を泥水や塵埃から保護している。
また、この実施例における3極の端子は電源ライン、ア
−スライン、センサ信号ラインである。次に上例の作用
を説明する。トラクタ1の後部に連結したヒッチ枠8で
ロ−タリ耕耘装置16を連結するときには、図1に示す
ようにヒッチ枠8の上部フック13でトップピン12を
引っ掛け、トラクタ1の油圧機構を作動させてヒッチ枠
8を上方へ回動させる。すると、ロ−タリ耕耘装置16
はトップピン12を中心として円弧運動をしながら前側
へ接近し、ピン18、18が下部フック14、14の係
止孔内に入り込む。そして、ピン18、18の後方への
抜けを防止すべくオペレ−タはロックア−ム15を時計
方向に回動させてロックする。
In this embodiment, the harnesses are arranged along the surface of the universal joint shaft 20 to transmit the signal to the contact 56 of the PTO shaft 3. However, the harnesses are embedded in the shaft. Also good. Reference numeral 60 in FIG. 4 is a waterproof rubber, which protects the contacts 42 and 48 from muddy water and dust.
The three pole terminals in this embodiment are the power supply line, the ground line and the sensor signal line. Next, the operation of the above example will be described. When connecting the rotary tiller 16 with the hitch frame 8 connected to the rear part of the tractor 1, the top pin 12 is hooked by the upper hook 13 of the hitch frame 8 to operate the hydraulic mechanism of the tractor 1 as shown in FIG. To rotate the hitch frame 8 upward. Then, the rotary cultivator 16
Moves toward the front while making an arc motion around the top pin 12, and the pins 18 and 18 enter into the locking holes of the lower hooks 14 and 14. Then, in order to prevent the pins 18, 18 from coming out backward, the operator rotates the lock arm 15 clockwise to lock it.

【0014】このときヒッチ枠8に支持されていた自在
継手軸20の後部ヨ−ク20aはロ−タリ耕耘装置16
側の入力軸22と略同時に連結されることになり、ここ
にトラクタ1と作業機16の動力伝達系の連結が完了す
る。そして、このトラクタ1とロ−タリ耕耘装置16と
の連結が完了すると、耕深センサ33と本機側コントロ
−ラ35との電装系ラインも繋がることになる。すなわ
ち、入力軸22側の接触子42と自在継手軸20の後部
ヨ−ク20a側の接触子48が接した状態で電源ライ
ン、ア−スライン、センサ信号ラインが繋がることにな
り、これにより、リヤカバ−28の前後揺動による耕深
変動は本機側コントロ−ラ35に直ちに伝えられ、図示
外のコントロ−ルバルブを制御して作業機を昇降制御さ
せることができる。
At this time, the rear yoke 20a of the universal joint shaft 20 supported by the hitch frame 8 is a rotary tiller 16.
The input shaft 22 on the side is connected substantially at the same time, and the connection of the power transmission system of the tractor 1 and the working machine 16 is completed here. When the connection between the tractor 1 and the rotary tiller 16 is completed, the electric line of the tillage depth sensor 33 and the main unit side controller 35 is also connected. That is, the power source line, the ground line, and the sensor signal line are connected in a state where the contactor 42 on the input shaft 22 side and the contactor 48 on the rear yoke 20a side of the universal joint shaft 20 are in contact with each other. Fluctuation depth due to front-back swing of the rear cover 28 is immediately transmitted to the machine-side controller 35, and a control valve (not shown) can be controlled to control the working machine up and down.

【0015】[0015]

【発明の効果】この発明は前記の如く、トラクタの後部
にトップリンクとロアリンクを介して連結したヒッチ枠
に作業機を着脱自在に連結し、略同時にトラクタのPT
O軸と作業機側入力軸とをヒッチ枠に支持された自在継
手軸により接合してなる作業機連結装置において、前記
作業機側に耕深センサを設け、この耕深センサの信号伝
達ラインを回転動力伝達経路中に設けたものであるか
ら、トラクタと作業機のヒッチ部の脱着を行えば耕深セ
ンサと本機側コントロ−ラとの信号伝達電装系ラインも
自動的に連結されることになり、この結果、従来のよう
にソケット等の脱着操作を行う必要がなく、トラクタと
作業機とのマッチング作業が簡単になると共に、脱着時
にソケット類を損傷破壊する恐れもないので耐久性も向
上する。
As described above, according to the present invention, the working machine is detachably connected to the hitch frame which is connected to the rear portion of the tractor through the top link and the lower link.
In a working machine connecting device in which an O shaft and a working machine side input shaft are joined by a universal joint shaft supported by a hitch frame, a working depth sensor is provided on the working machine side, and a signal transmission line of this working depth sensor is provided. Since it is provided in the rotary power transmission path, if the tractor and the hitch of the work machine are removed and attached, the signal transmission electrical system line between the tillage depth sensor and the machine side controller will be automatically connected. As a result, it is not necessary to remove and attach sockets and the like as in the past, and the matching work between the tractor and the work machine is easy, and there is no risk of damaging and destroying the sockets during attachment and detachment, so durability is also improved. improves.

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

【図1】全体側面図である。FIG. 1 is an overall side view.

【図2】要部の斜視図である。FIG. 2 is a perspective view of a main part.

【図3】要部の側面図である。FIG. 3 is a side view of a main part.

【図4】要部の断面図である。FIG. 4 is a sectional view of a main part.

【図5】作動原理を説明した図である。FIG. 5 is a diagram illustrating an operating principle.

【符号の説明】[Explanation of symbols]

1 トラクタ− 3 PTO軸 4 トップリンク 5 ロアリンク 7 3点リンク機構 8 ヒッチ枠 12 トップピン 13 上部フック 14 下降フック 15 ロックア−ム 16 作業機(ロ−タリ耕耘装置) 20 自在継手軸 22 入力軸 1 tractor 3 PTO shaft 4 top link 5 lower link 7 3 point link mechanism 8 hitch frame 12 top pin 13 upper hook 14 lower hook 15 lock arm 16 working machine (rotary tiller) 20 universal joint shaft 22 input shaft

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】トラクタの後部にトップリンクとロアリン
クを介して連結したヒッチ枠に作業機を着脱自在に連結
し、略同時にトラクタのPTO軸と作業機側入力軸とを
ヒッチ枠に支持された自在継手軸により接合してなる作
業機連結装置において、前記作業機側に耕深センサを設
け、この耕深センサの信号伝達ラインを回転動力伝達経
路中に設けたことを特徴とする作業機連結装置。
1. A work machine is detachably connected to a hitch frame connected to a rear portion of a tractor via a top link and a lower link, and the PTO shaft of the tractor and an input shaft on the work machine side are supported by the hitch frame at substantially the same time. In the working machine coupling device joined by a universal joint shaft, a working depth sensor is provided on the working machine side, and a signal transmission line of the working depth sensor is provided in the rotary power transmission path. Coupling device.
JP5644494A 1994-03-28 1994-03-28 Connecting device for working machine Pending JPH07255215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5644494A JPH07255215A (en) 1994-03-28 1994-03-28 Connecting device for working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5644494A JPH07255215A (en) 1994-03-28 1994-03-28 Connecting device for working machine

Publications (1)

Publication Number Publication Date
JPH07255215A true JPH07255215A (en) 1995-10-09

Family

ID=13027266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5644494A Pending JPH07255215A (en) 1994-03-28 1994-03-28 Connecting device for working machine

Country Status (1)

Country Link
JP (1) JPH07255215A (en)

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