JPH0737452Y2 - Coupling device for tractor and work equipment - Google Patents

Coupling device for tractor and work equipment

Info

Publication number
JPH0737452Y2
JPH0737452Y2 JP12060188U JP12060188U JPH0737452Y2 JP H0737452 Y2 JPH0737452 Y2 JP H0737452Y2 JP 12060188 U JP12060188 U JP 12060188U JP 12060188 U JP12060188 U JP 12060188U JP H0737452 Y2 JPH0737452 Y2 JP H0737452Y2
Authority
JP
Japan
Prior art keywords
yoke
tractor
input shaft
working machine
bearing
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
JP12060188U
Other languages
Japanese (ja)
Other versions
JPH0244916U (en
Inventor
圭一 佐々木
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 JP12060188U priority Critical patent/JPH0737452Y2/en
Publication of JPH0244916U publication Critical patent/JPH0244916U/ja
Application granted granted Critical
Publication of JPH0737452Y2 publication Critical patent/JPH0737452Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案はトラクタと作業機の連結装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a coupling device for a tractor and a working machine.

(従来の技術) 一般に、中央1本のトップリンクと左右一対のロアリン
クとから成る3点リンク機構を介して、トラクタの後方
にロータリ耕耘装置等の作業機が昇降自在でかつ着脱自
在に連結され、トラクタのPTO軸と耕耘装置の入力軸と
は自在継手で連動連結されている。そして、前記連結作
業を容易に行い得るようにしたものが、実願昭63-16926
号にて提案されている。
(Prior Art) Generally, a working machine such as a rotary tiller is vertically and detachably connected to the rear of a tractor through a three-point link mechanism including a central top link and a pair of left and right lower links. The PTO shaft of the tractor and the input shaft of the tiller are interlockingly connected by a universal joint. And, the one that enables the connection work to be performed easily is disclosed in Japanese Utility Model Application No. 63-16926.
It is proposed in the issue.

これは、トップリンクと両ロアリンクの夫々の耕耘装置
側端部を連結体により連結し、連結体のトップリンクと
の連結部分を耕耘装置の前上部に係合し、3点リンク機
構を上昇させることにより耕耘装置をトラクタ側に引き
寄せて、耕耘装置前部の左右両側を連結体の左右両側に
連結するようにしたものである。前記連結体には、第6
図に示すように、連結体に固着のブラケット81に保持体
82が取付けられ、この保持体82に形成した円形孔85に装
備筒83が遊挿されている。この装備筒83の耕耘装置側端
部に設けたバネ受84と保持体82との間にコイルバネ86が
圧縮状に介装されて、装備筒83は首振り可能に保持され
ている。また、装備筒83内にはPTO軸87と入力軸88とを
連結する自在継手89の耕耘装置側端部のヨーク90が配置
され、ヨーク90の筒軸部91が軸受92を介して装備筒83に
支持されている。したがって、耕耘装置の連結時に、入
力軸88とヨーク90の筒軸部91との軸心がずれていても装
備筒83の首振り動作により前記軸心のずれが修正され
て、入力軸88が円滑に連結されるようになっている。そ
して、前記軸心のずれが大きい場合でも前記連結作業が
円滑に行なわれるように、装備筒83内にはヨーク90より
も耕耘装置側に位置して案内体93が設けられている。こ
の案内体93は円盤状に形成され、中央に入力軸88が挿通
する挿通孔94を形成し、且つ耕耘装置側端面に入力軸88
を挿通孔94に案内するテーパ状案内面95が形成されてい
ると共に、トラクタ側端面は平担面とされている。
This is to connect the top link and each end of the lower links on the side of the tiller, and to connect the top link of the connector to the front upper part of the tiller to raise the three-point link mechanism. By so doing, the tiller is pulled toward the tractor, and the left and right sides of the front part of the tiller are connected to the left and right sides of the connecting body. The connecting body includes a sixth
As shown in the figure, the bracket 81 fixed to the connecting body
82 is attached, and the equipment cylinder 83 is loosely inserted in the circular hole 85 formed in the holding body 82. A coil spring 86 is interposed in a compressed state between a spring receiver 84 and a holding body 82 provided at the end of the equipment barrel 83 on the side of the tiller, and the equipment barrel 83 is held so as to be swingable. In addition, a yoke 90 at the end of the universal joint 89 that connects the PTO shaft 87 and the input shaft 88 to the tiller side is arranged in the equipment cylinder 83, and the cylinder shaft portion 91 of the yoke 90 is mounted via the bearing 92. Backed by 83. Therefore, when the input shaft 88 and the cylinder shaft portion 91 of the yoke 90 are deviated from each other when the tiller is connected, the deviation of the shaft center is corrected by the swinging movement of the equipment cylinder 83, and the input shaft 88 is It is designed to be connected smoothly. Further, a guide body 93 is provided in the equipment cylinder 83 so as to be located closer to the cultivator than the yoke 90 so that the connecting work can be performed smoothly even when the axial center shift is large. This guide body 93 is formed in a disk shape, has an insertion hole 94 through which the input shaft 88 is inserted, and an input shaft 88 on the end surface on the side of the tiller.
A tapered guide surface 95 is formed to guide the shaft to the insertion hole 94, and the end surface on the tractor side is a flat surface.

(考案が解決しようとする課題) 前記構成のものにあっては、ヨーク90の装備筒91後端に
は抜け止め用の止め輪96及びこの止め輪96と軸受92との
間に介在されたカラー97等が設けられ、これによって、
筒軸部91の後端は軸受92よりも後方に突出されている。
また、案内体93のトラクタ側端面は平坦面とされている
ので、軸受92と案内体93の間隔を保持するために、装備
筒83内周面には間隔保持部98が形成されており、その
分、装備筒83の全長が長くなっている。また、入力軸88
の連結時において、入力軸88が案内体93に衝当する際の
衝撃力に耐えるために、案内体93はある程度の厚みを必
要とし、それによっても装備筒83の全長を長くしてい
る。
(Problems to be Solved by the Invention) In the configuration described above, a retaining ring 96 for preventing slipping out is provided at the rear end of the equipment cylinder 91 of the yoke 90, and the retaining ring 96 and the bearing 92 are interposed. Color 97 etc. are provided, by which,
The rear end of the cylinder shaft portion 91 projects rearward from the bearing 92.
Further, since the end surface of the guide body 93 on the tractor side is a flat surface, in order to maintain the distance between the bearing 92 and the guide body 93, a space holding portion 98 is formed on the inner peripheral surface of the equipment cylinder 83, Therefore, the total length of the equipment cylinder 83 is increased. Also, the input shaft 88
When the input shaft 88 is connected, the guide body 93 needs to have a certain thickness in order to withstand the impact force when the input shaft 88 hits the guide body 93, which also lengthens the total length of the equipment cylinder 83.

一方、装備筒83の全長を短くしてヨーク90を耕耘機側に
寄せて、ヨーク90の筒軸部91と入力軸88とのかみ合量を
多くとることは、動力を伝達する上において有効であ
る。また、ヨーク90を耕耘機側に寄せることは、自在継
手89の水平方向に対する傾斜角度が小さくなり、自在継
手89が発生する騒音を減少する上において有効である。
On the other hand, shortening the overall length of the equipment cylinder 83 to bring the yoke 90 closer to the cultivator side and increasing the amount of engagement between the cylinder shaft portion 91 of the yoke 90 and the input shaft 88 is effective in transmitting power. Is. Further, bringing the yoke 90 closer to the cultivator side is effective in reducing the angle of inclination of the universal joint 89 with respect to the horizontal direction and reducing the noise generated by the universal joint 89.

そこで本考案は、装備筒の全長を短くしてヨークを耕耘
装置側に寄せ、ヨークと入力軸とのかみ合量を多くと
り、且つ自在継手の水平方向に対する傾斜角度を小さく
することを目的とする。
Therefore, the object of the present invention is to shorten the total length of the equipment cylinder to bring the yoke closer to the tiller, increase the amount of engagement between the yoke and the input shaft, and reduce the inclination angle of the universal joint with respect to the horizontal direction. To do.

(課題を解決するための手段) 本考案が前記目的を達成するために講じた技術的手段
は、トラクタ1に設けた3点リンク機構5に作業機11を
連結する連結体10を装着し、この連結体10に設けた保持
体41に装備筒43を首振り自在に設け、保持体41と装備筒
43との間に装備筒43を作業機11側に付勢し且つ前記首振
り可能に保持するバネ45を設け、装備筒43内に、トラク
タ1のPTO軸6と作業機11の入力軸16とを連動連結する
自在継手17の作業機11側端部のヨーク47を軸受49を介し
て支持すると共に、ヨーク47よりも作業機11側に位置し
て入力軸16のヨーク47への連結時に入力軸16を案内する
リング状案内体52を設けたトラクタと作業機の連結装置
において、 前記ヨーク47を支持する軸受49の抜止めをすべく案内体
52の外周部53を軸受に当接し、案内体52のトラクタ1側
端面に軸受49から突出するヨーク47の端部が収容される
凹部56を形成し、この凹部56の内面をアーチ形状に形成
した点にある。
(Means for Solving the Problem) The technical means taken by the present invention to achieve the above-mentioned object is to mount a connecting body 10 for connecting a working machine 11 to a three-point link mechanism 5 provided in the tractor 1, An equipment cylinder 43 is swingably provided on a holding body 41 provided on the connecting body 10, and the holding body 41 and the equipment cylinder are provided.
A spring 45 for urging the equipment cylinder 43 toward the working machine 11 side and holding the swingable body 43 is provided between the equipment 43 and 43, and the PTO shaft 6 of the tractor 1 and the input shaft 16 of the working machine 11 are provided in the equipment cylinder 43. While supporting the yoke 47 at the working machine 11 side end portion of the universal joint 17 for interlocking with and via the bearing 49, the yoke 47 is located closer to the working machine 11 than the yoke 47 and is connected to the yoke 47 of the input shaft 16. In a coupling device for a tractor and a working machine provided with a ring-shaped guide body 52 for guiding the input shaft 16, a guide body is provided to prevent the bearing 49 supporting the yoke 47 from being pulled out.
An outer peripheral portion 53 of 52 is brought into contact with a bearing, and a concave portion 56 for accommodating the end portion of the yoke 47 projecting from the bearing 49 is formed on the end surface of the guide body 52 on the tractor 1 side, and the inner surface of the concave portion 56 is formed in an arch shape. There is a point.

(作用) 作業機11のトラクタ1への連結時において、連結体10の
上部を作業機11の上部に係合させて3点リンク機構5を
上昇させると、作業機11は持ち上げられてトラクタ1側
へ引き寄せられ連結体10に連結される。このとき、作業
機11の入力軸16は自在継手17の作業機11側端部のヨーク
47と連結し、その自在継手17を介してトラクタ1のPTO
軸6と連動連結される。この連結時に、ヨーク47と入力
軸26との軸心がずれていても、入力軸16は案内体52に衝
当して案内されると共に、装備筒43と共にヨーク47が首
振り動作して、前記軸心のずれが修正されて入力軸16は
ヨーク47に良好に連結される。
(Operation) When the working machine 11 is connected to the tractor 1, when the upper part of the coupling body 10 is engaged with the upper part of the working machine 11 to raise the three-point link mechanism 5, the working machine 11 is lifted and the tractor 1 is lifted. It is pulled to the side and connected to the connecting body 10. At this time, the input shaft 16 of the working machine 11 is the yoke of the end of the universal joint 17 on the working machine 11 side.
PTO of the tractor 1 via the universal joint 17 connected to the 47
It is interlocked with the shaft 6. At the time of this connection, even if the axes of the yoke 47 and the input shaft 26 are deviated from each other, the input shaft 16 is guided by hitting the guide body 52, and the yoke 47 together with the equipment cylinder 43 swings. The input shaft 16 is satisfactorily connected to the yoke 47 by correcting the displacement of the shaft center.

前記案内体52はそのトラクタ1側端面にアーチ形状の凹
部56が形成されていて、入力軸16の衝当に対して強い構
造となっている。また、前記凹部56にヨーク47の軸受49
より作業機11側に突出する部分が収容されるので、軸受
49と案内体52の外周部53との間隔を保持する必要がな
く、案内体外周部53を軸受49に当接して装備筒43の全長
を短くできる。それにより、ヨーク47を入力軸16側に寄
せられるので、ヨーク47と入力軸16とのかみ合量が多く
なり、且つ自在継手17の水平方向に対する傾斜角度が小
さくされている。
The guide body 52 has an arch-shaped concave portion 56 formed on the end surface on the tractor 1 side, and has a strong structure against the impact of the input shaft 16. Further, the bearing 49 of the yoke 47 is provided in the recess 56.
Since the part that projects more toward the working machine 11 side is accommodated, the bearing
It is not necessary to maintain a space between the guide body 52 and the outer peripheral portion 53 of the guide body 52, and the guide body outer peripheral portion 53 can be brought into contact with the bearing 49 to shorten the total length of the equipment cylinder 43. As a result, the yoke 47 is brought closer to the input shaft 16 side, so that the amount of meshing between the yoke 47 and the input shaft 16 is increased, and the inclination angle of the universal joint 17 with respect to the horizontal direction is reduced.

(実施例) 以下、本考案の実施例を図面に基いて説明する。第2図
において、1はトラクタで、2はその車体であり、車体
2の後部上には左右一対のリフトアーム3を有する油圧
装置4が搭載されている。また、車体2の後端には、3
点リンク機構5が装着されると共に、PTO軸6が後方突
出状に設けられている。3点リンク機構5はトップリン
ク7と左右一対のロアリンク8とから成り、各ロアリン
ク8と各リフトアーム3とが夫々リフトロッド9により
連結されている。3点リンク機構5の後端には連結体10
が設けられ、この連結体10に作業機として例示するロー
タリ耕耘装置11が着脱自在に連結され、耕耘装置11は3
点リンク機構5により昇降自在とされている。
Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, 1 is a tractor, 2 is its vehicle body, and a hydraulic device 4 having a pair of left and right lift arms 3 is mounted on the rear portion of the vehicle body 2. In addition, at the rear end of the vehicle body 2,
A point link mechanism 5 is mounted and a PTO shaft 6 is provided so as to project rearward. The three-point link mechanism 5 includes a top link 7 and a pair of left and right lower links 8, and each lower link 8 and each lift arm 3 are connected by a lift rod 9. A connecting body 10 is provided at the rear end of the three-point link mechanism 5.
Is provided, and a rotary cultivating device 11 exemplified as a working machine is detachably connected to the connecting body 10. The cultivating device 11 has three
It can be raised and lowered by the point link mechanism 5.

耕耘装置11は機枠12の中央上部にギヤケース13を配置
し、ギヤケース13から前方に入力軸16が突設されてい
る。入力軸16は自在継手17を介してPTO軸6から動力伝
達可能とされ、自在継手17は軸方向に伸縮自在とされて
いる。また、ギヤケース13から左右にサポートアーム14
が突出され、上部にトップマスト15が設けられている。
In the cultivating device 11, a gear case 13 is arranged in the upper center of a machine frame 12, and an input shaft 16 is projectingly provided in front of the gear case 13. The input shaft 16 is capable of transmitting power from the PTO shaft 6 via a universal joint 17, and the universal joint 17 is expandable and contractable in the axial direction. Also, from the gear case 13 to the left and right support arms 14
Is projected and the top mast 15 is provided on the upper part.

第3図及び第4図において、連結体10は正面視山形状の
枠体18を有し、この枠体18の中央頂部には左右一対の取
付板19が設けられ、取付板19の前上部間にはトップリン
ク9後端の継手部20が取付ピン21を介して連結されてい
る。また、取付板19の後上部には耕耘装置11のトップマ
スト15に設けた上連結ピン22に係脱自在に係合する切欠
部23が形成されている。枠体18の左右両側には一対の受
部材24が配置され、この受部材24から外側方に突設され
た連結軸25にロアリンク8後端の継手部26が連結されて
いる。また、受部材24には耕耘装置11のサポートアーム
14にブラケット27を介して設けた下連結ピン28が後方か
ら係脱自在に係合する係合凹部29を形成している。そし
て、前記切欠部22を上連結ピン22の下方に位置させて3
点リンク機構5を上昇させていくことにより、切欠部22
は上連結ピン22に係合して耕耘装置11が持ち上げられ、
耕耘装置11は上連結ピン22廻りに前方側に回動して、下
連結ピン28が係合凹部29に係合するようになっている。
In FIGS. 3 and 4, the connecting body 10 has a frame 18 having a mountain shape in a front view, and a pair of left and right mounting plates 19 are provided at the central top of the frame 18, and the front upper part of the mounting plate 19 is provided. A joint portion 20 at the rear end of the top link 9 is connected between them via a mounting pin 21. In addition, a notch 23 that engages with an upper connecting pin 22 provided on the top mast 15 of the tiller 11 in a detachable manner is formed in the upper rear portion of the mounting plate 19. A pair of receiving members 24 are arranged on both left and right sides of the frame body 18, and a joint portion 26 at the rear end of the lower link 8 is connected to a connecting shaft 25 projecting outward from the receiving members 24. Further, the receiving member 24 has a support arm for the tiller 11.
The lower connecting pin 28 provided on the bracket 14 via the bracket 27 is formed with an engaging recess 29 with which the lower connecting pin 28 is engageably and disengaged from the rear side. Then, the notch 22 is located below the upper connecting pin 22 and
By raising the point link mechanism 5, the notch 22
Is engaged with the upper connecting pin 22 and the tiller 11 is lifted,
The tiller 11 is rotated around the upper connecting pin 22 to the front side so that the lower connecting pin 28 engages with the engaging recess 29.

前記左右受部材24には抜止め手段30が設けられ、この抜
止め手段30には受部材24上に固着の筒体31に嵌挿され且
つコイルスプリング33により下方へ付勢されて係合凹部
29内へ進入することにより凹部29に係合した下連結ピン
28の抜止めをするロックピン32が設けられている。この
ロックピン32は把持部材34により引き上げられて凹部29
から退避し、下連結ピン28の凹部29への係脱を許容し、
下連結ピン28の凹部29からの離脱状態で第4図中バネ36
で時計方向に付勢された規制体35により前記退避位置が
保持されるようになっている。この状態から下連結ピン
28が凹部29に進入すると、下連結ピン28で規制体35が押
動されてロックピン32の保持が解除される。
The left and right receiving members 24 are provided with retaining means 30. The retaining means 30 is fitted into a cylindrical body 31 fixed on the receiving member 24 and is urged downward by a coil spring 33 to engage recesses.
Lower connection pin engaged with the recess 29 by entering into the recess 29
A lock pin 32 is provided to prevent 28 from coming off. The lock pin 32 is pulled up by the gripping member 34 to form the recess 29.
Retract from the bottom, allowing the lower connecting pin 28 to engage and disengage with the recess 29,
When the lower connecting pin 28 is separated from the recess 29, the spring 36 in FIG.
The retracted position is held by the restricting body 35 which is biased in the clockwise direction by. From this state lower connection pin
When 28 enters the recess 29, the lower connecting pin 28 pushes the restriction body 35 to release the holding of the lock pin 32.

第1図にも示すように、連結体10の中央の取付ブラケッ
ト37にはボルト38、ナット39及びスプリング40を介して
保持体41が吊持状に取付けられ、若干前後揺動自在とさ
れている。保持体41に形成された円形孔42には装備筒43
が遊挿され、装備筒43後部のバネ受44と保持体41との間
にはコイルバネ45が圧縮状に介装され、装備筒43の前部
には抜止め用のフランジ46が設けられている。これによ
り、装備筒43は首振り及び平行移動可能に保持されてい
る。また、装備筒43は前後に2分割されて相互に固着さ
れている。
As shown in FIG. 1, a holding body 41 is attached to the mounting bracket 37 at the center of the connecting body 10 via bolts 38, nuts 39, and springs 40 in a suspended manner so that it can be rocked back and forth slightly. There is. An equipment cylinder 43 is provided in the circular hole 42 formed in the holding body 41.
Is loosely inserted, a coil spring 45 is interposed in a compressed state between the spring receiver 44 at the rear portion of the equipment cylinder 43 and the holding body 41, and a retaining flange 46 is provided at the front portion of the equipment cylinder 43. There is. As a result, the equipment cylinder 43 is held so as to be swingable and movable in parallel. Further, the equipment cylinder 43 is divided into two parts, front and rear, and fixed to each other.

前記装備筒43内には、自在継手17の後端のヨーク47が配
置され、ヨーク47の後部は筒軸部48とされ、この筒軸部
48に入力軸16がスプライン嵌合される。また、ヨーク47
はその筒軸部48が軸受49を介して装備筒43内周面に回転
自在に支持され、筒軸部48の後端は軸受49より後方に突
出されてカラー50を挟んで止め輪51が設けられ、軸受49
に対して前方への抜けが防止されている。
A yoke 47 at the rear end of the universal joint 17 is arranged in the equipment cylinder 43, and a rear portion of the yoke 47 is a cylinder shaft portion 48.
The input shaft 16 is spline-fitted to the shaft 48. Also, the yoke 47
The cylindrical shaft portion 48 is rotatably supported on the inner peripheral surface of the equipment cylinder 43 via a bearing 49, and the rear end of the cylindrical shaft portion 48 is projected rearward from the bearing 49 to sandwich a collar 50 with a retaining ring 51. Bearings provided 49
The front is prevented from falling out.

装備筒43内の後端には、ヨーク47より耕耘装置11側に位
置してリング状の案内体52が内嵌されている。案内体外
周部53の前面は軸受49に当接され、後部には段部54が形
成されて止め輪55が設けられ、この止め輪55により案内
体52及び軸受49の後方への抜けが防止されている。案内
体52の前端面には凹部56が形成され、この凹部56内に軸
受49より後方に突出するヨーク47の筒軸部48の後端が収
容されている。凹部56内面は中央が平坦状とされ、周縁
が円弧状とされていて、アーチ形状を呈している。ま
た、案内体52の中央には入力軸16を挿通する挿通孔57が
形成され、案内体52後端面には挿通孔57から後方に向け
て拡開するテーパ状の案内面58が形成されている。な
お、凹部56内面のアーチ形状としては半円形、楕円形、
懸垂形等であっても良い。
At the rear end of the equipment cylinder 43, a ring-shaped guide body 52 that is located closer to the tiller 11 than the yoke 47 is fitted. The front surface of the guide body outer peripheral portion 53 is in contact with the bearing 49, and a step portion 54 is formed in the rear portion to provide a retaining ring 55. The retaining ring 55 prevents the guide body 52 and the bearing 49 from coming out backward. Has been done. A recess 56 is formed in the front end surface of the guide body 52, and the rear end of the cylindrical shaft portion 48 of the yoke 47 protruding rearward from the bearing 49 is accommodated in the recess 56. The inner surface of the recess 56 is flat at the center and arcuate at the periphery, and has an arch shape. Further, an insertion hole 57 for inserting the input shaft 16 is formed at the center of the guide body 52, and a tapered guide surface 58 is formed on the rear end surface of the guide body 52 to expand rearward from the insertion hole 57. There is. The arch shape of the inner surface of the recess 56 is semicircular, elliptical,
It may be a suspended shape or the like.

前記構成において、入力軸16は耕耘装置11のトラクタ1
への連結の際に、引き寄せられてヨーク47に連結される
のであるが、この場合、ヨーク47の筒軸部48の軸心と入
力軸16との軸心が大きくずれていても、入力軸16は案内
体52の案内面58に衝当し、入力軸16が案内面58上を相対
的に摺動して装備筒43と共にヨーク47が首振り動作及び
平行移動して、入力軸16と筒軸部48との軸心のずれは修
正されて、両者は良好に咬合連結される。
In the above configuration, the input shaft 16 is the tractor 1 of the tiller 11.
When it is connected to the yoke 47, it is pulled and connected to the yoke 47.In this case, even if the axis of the cylindrical shaft portion 48 of the yoke 47 and the axis of the input shaft 16 are significantly deviated from each other, 16 collides with the guide surface 58 of the guide body 52, the input shaft 16 slides relatively on the guide surface 58, and the yoke 47 swings and moves in parallel with the equipment cylinder 43, and the input shaft 16 The misalignment of the axial center with the cylindrical shaft portion 48 is corrected, and both are satisfactorily occlusally connected.

第5図は他の実施例を示し、前後に2分割された装備筒
43をロールピン59により接合したものである。すなわ
ち、後装備筒43Rの前端を前装備筒43Fの後端に段部61を
介して重合させ、この重合部分に貫通孔60を形成し、ロ
ールピン59が貫通孔60に内嵌されている。ロールピン59
及び貫通孔60は周方向に間隔をおいて複数設けられてい
る。また、バネ受44は、後装備筒43R後端に溶着されて
いる。
FIG. 5 shows another embodiment, in which the equipment cylinder is divided into two parts, front and rear.
43 is joined by a roll pin 59. That is, the front end of the rear equipment cylinder 43R is superposed on the rear end of the front equipment cylinder 43F via the step 61, the through hole 60 is formed in this superposed portion, and the roll pin 59 is fitted into the through hole 60. Roll pin 59
A plurality of through holes 60 are provided at intervals in the circumferential direction. Further, the spring receiver 44 is welded to the rear end of the rear equipment cylinder 43R.

(考案の効果) 本考案によれば、作業機1の入力軸16が連結されるヨー
ク47を支持する軸受49の抜止めをすべく、案内体52の外
周部53を軸受49に当接し、案内体52のトラクタ1側端面
に軸受49から突出するヨーク47の端部が収容される凹部
56を形成したので、従来のように軸受と案内体外周部と
の間隔を保持する必要がなく、その分装備筒43の全長を
短くして、ヨーク47を入力軸16側に寄せられる。これに
より、ヨーク47と入力軸16とのかみ合量を多くとること
ができ、動力伝達の上において有効である。また、ヨー
ク47を入力軸16側に寄せることにより、自在継手17の水
平方向に対する傾斜角度が小さくなり、自在継手17が発
生する騒音を減少することができる。
(Effect of the Invention) According to the present invention, in order to prevent the bearing 49 supporting the yoke 47 to which the input shaft 16 of the working machine 1 is connected from coming off, the outer peripheral portion 53 of the guide body 52 is brought into contact with the bearing 49, A recess for accommodating the end of the yoke 47 protruding from the bearing 49 on the end surface of the guide body 52 on the tractor 1 side.
Since 56 is formed, it is not necessary to maintain the space between the bearing and the outer peripheral portion of the guide body as in the conventional case, and the total length of the equipment cylinder 43 is shortened by that much, and the yoke 47 can be brought closer to the input shaft 16 side. As a result, the amount of meshing between the yoke 47 and the input shaft 16 can be increased, which is effective in power transmission. Further, by bringing the yoke 47 closer to the input shaft 16 side, the inclination angle of the universal joint 17 with respect to the horizontal direction can be reduced, and the noise generated by the universal joint 17 can be reduced.

また、前記凹部56はアーチ形状に形成されたので、案内
体52は入力軸16が衝当した際の衝撃力に対して構造的に
強い。また、それによって、案内体52の外周部の厚みを
従来に比して薄くすることができ、それによっても装備
筒43の全長を短くすることができる。
Further, since the concave portion 56 is formed in an arch shape, the guide body 52 is structurally strong against an impact force when the input shaft 16 hits. Further, by doing so, the thickness of the outer peripheral portion of the guide body 52 can be made thinner than in the conventional case, which also makes it possible to shorten the total length of the equipment cylinder 43.

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

第1図乃至第4図は本考案の実施例を示し、第1図は要
部の側断面図、第2図は全体側面図、第3図は要部の正
面図、第4図は同側面図、第5図は他の実施例を示す要
部の側断面図、第6図は従来例を示す側断面図である。 1……トラクタ、5……3点リンク機構、6……PTO
軸、10……連結体、11……ロータリ耕耘装置(作業
機)、16……入力軸、17……自在継手、41……保持体、
43……装備筒、45……コイルバネ、47……ヨーク、49…
…軸受、52……案内体、53……外周部、56……凹部。
1 to 4 show an embodiment of the present invention. FIG. 1 is a side sectional view of a main part, FIG. 2 is an overall side view, FIG. 3 is a front view of the main part, and FIG. A side view, FIG. 5 is a side sectional view of an essential part showing another embodiment, and FIG. 6 is a side sectional view showing a conventional example. 1 ... tractor, 5 ... 3-point link mechanism, 6 ... PTO
Shaft, 10 …… Coupling body, 11 …… Rotary tiller (working machine), 16 …… Input shaft, 17 …… Universal joint, 41 …… Holder,
43 …… Equipment cylinder, 45 …… Coil spring, 47 …… Yoke, 49…
… Bearing, 52 …… guide, 53 …… peripheral part, 56 …… recess.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】トラクタ(1)に設けた3点リンク機構
(5)に作業機(11)を連結する連結体(10)を装着
し、この連結体(10)に設けた保持体(41)に装備筒
(43)を首振り自在に設け、保持体(41)と装備筒(4
3)との間に装備筒(43)を作業機(11)側に付勢し且
つ前記首振り可能に保持するバネ(45)を設け、装備筒
(43)内に、トラクタ(1)のPTO軸(6)と作業機(1
1)の入力軸(16)とを連動連結する自在継手(17)の
作業機(11)側端部のヨーク(47)を軸受(49)を介し
て支持すると共に、ヨーク(47)よりも作業機(11)側
に位置して入力軸(16)のヨーク(47)への連結時に入
力軸(16)を案内するリング状案内体(52)を設けたト
ラクタと作業機の連結装置において、 前記ヨーク(47)を支持する軸受(49)の抜止めをすべ
く案内体(52)の外周部(53)を軸受に当接し、案内体
(52)のトラクタ(1)側端面に軸受(49)から突出す
るヨーク(47)の端部が収容される凹部(56)を形成
し、この凹部(56)の内面をアーチ形状に形成したこと
を特徴とするトラクタと作業機の連結装置。
1. A connecting body (10) for connecting a working machine (11) to a three-point link mechanism (5) provided on a tractor (1), and a holding body (41) provided on the connecting body (10). ) Is equipped with an equipment tube (43) so that it can be swung freely, and a holder (41) and an equipment tube (4)
A spring (45) for urging the equipment cylinder (43) toward the working machine (11) side and holding it so that it can swing is provided between the equipment cylinder (3) and 3), and the equipment cylinder (43) is provided with a spring (45). PTO shaft (6) and work equipment (1
While supporting the yoke (47) at the working machine (11) side end of the universal joint (17) that interlocks with the input shaft (16) of 1) via the bearing (49), it is better than the yoke (47). A coupling device for a tractor and a working machine, which is located on the working machine (11) side and provided with a ring-shaped guide body (52) for guiding the input shaft (16) when the input shaft (16) is coupled to the yoke (47). The outer peripheral portion (53) of the guide body (52) is brought into contact with the bearing so as to prevent the bearing (49) supporting the yoke (47) from coming off, and the bearing is attached to the end face of the guide body (52) on the tractor (1) side. A coupling device for a tractor and a working machine, characterized in that a concave portion (56) for accommodating an end portion of a yoke (47) protruding from the (49) is formed, and an inner surface of the concave portion (56) is formed in an arch shape. .
JP12060188U 1988-09-13 1988-09-13 Coupling device for tractor and work equipment Expired - Lifetime JPH0737452Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12060188U JPH0737452Y2 (en) 1988-09-13 1988-09-13 Coupling device for tractor and work equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12060188U JPH0737452Y2 (en) 1988-09-13 1988-09-13 Coupling device for tractor and work equipment

Publications (2)

Publication Number Publication Date
JPH0244916U JPH0244916U (en) 1990-03-28
JPH0737452Y2 true JPH0737452Y2 (en) 1995-08-30

Family

ID=31366859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12060188U Expired - Lifetime JPH0737452Y2 (en) 1988-09-13 1988-09-13 Coupling device for tractor and work equipment

Country Status (1)

Country Link
JP (1) JPH0737452Y2 (en)

Also Published As

Publication number Publication date
JPH0244916U (en) 1990-03-28

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