JPH0678601A - Apparatus for attaching tilling tine - Google Patents
Apparatus for attaching tilling tineInfo
- Publication number
- JPH0678601A JPH0678601A JP23488492A JP23488492A JPH0678601A JP H0678601 A JPH0678601 A JP H0678601A JP 23488492 A JP23488492 A JP 23488492A JP 23488492 A JP23488492 A JP 23488492A JP H0678601 A JPH0678601 A JP H0678601A
- Authority
- JP
- Japan
- Prior art keywords
- engaging
- shaft
- claw
- groove
- mounting
- 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
- Soil Working Implements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ロータリ耕耘装置等に
使用される耕耘爪の取付装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for a tilling claw used in a rotary tilling device or the like.
【０００２】[0002]
【従来の技術】ロータリ耕耘装置にあっては、爪軸に固
定した筒状の爪取付ブラケットに耕耘爪の基部を挿入
し、該爪取付ブラケットに耕耘爪を着脱自在に取付ける
ようにしたものがある。そして、この耕耘爪を爪取付ブ
ラケットにボルト・ナットによって固定したのでは、着
脱に時間がかかり面倒であるため、弾性板材から成る固
定具によって耕耘爪を固定するようにしたものが特開平
1−218502号公報に開示されている。2. Description of the Related Art In a rotary tiller, there is a rotary tiller in which a base of a tilling pawl is inserted into a tubular pawl mounting bracket fixed to a pawl shaft, and the tilling pawl is detachably attached to the pawl mounting bracket. is there. Since fixing and fixing this plowing claw to the claw mounting bracket with bolts and nuts is time-consuming and cumbersome, a fixing tool made of an elastic plate material is used to fix the plowing claw.
It is disclosed in Japanese Unexamined Patent Publication No. 1-218502.
【０００３】このものは、爪取付ブラケットの一対の対
向壁および耕耘爪の基部に、頭部が耕耘爪に接当すると
共に先端側が一方の対向壁から突出するように挿通され
る取付軸を有し、この取付軸の先端側には係止部が設け
られている。一方、固定具は、爪取付ブラケットの一方
の対向壁の反対向側面に位置される係合片を有し、この
係合片には、取付軸の係止部が挿脱可能な挿脱孔と、取
付軸の係止部と一方の対向壁との間の係合軸部が挿脱孔
から軸方向に直交する方向に挿入可能な係合溝が形成さ
れていて、係合片を係合軸部が係合溝に挿入されるよう
に打込み移動させることで、係合溝の両側縁部が係止部
と一方の対向壁との間に係合して、弾性力によって係止
部を一方の対向壁から離反する方向に付勢するように該
係合片が弯曲形成されている。[0003] This one has a pair of opposing walls of a pawl mounting bracket and a base of a plowing pawl, and a mounting shaft which is inserted so that the head is in contact with the plowing pawl and the tip side projects from one of the opposing walls. However, a locking portion is provided on the tip side of this mounting shaft. On the other hand, the fixture has an engagement piece located on the opposite side surface of one of the opposing walls of the claw attachment bracket, and an engagement / disengagement hole into which the engaging portion of the attachment shaft can be inserted and removed. And the engaging shaft portion between the locking portion of the mounting shaft and one of the opposing walls is formed with an engaging groove that can be inserted from the insertion / removal hole in a direction orthogonal to the axial direction. By driving the mating shaft portion so as to be inserted into the engagement groove, both side edges of the engagement groove are engaged between the engagement portion and one opposing wall, and the engagement portion is elastically moved. The engaging piece is curved so as to urge the element in a direction away from the one opposing wall.
【０００４】[0004]
【発明が解決しようとする課題】前記従来のものにあっ
ては、取付軸の係合軸部が相対的に挿入される係合溝
は、一様に、係合軸部の径と略同径に形成されているだ
けであり、挿入の容易性および抜け防止について考慮さ
れていなかった。そこで本発明を、係合軸部の係合溝に
対する挿入容易化を図り且つ抜け防止について考慮し、
係合片の装着の容易化と離脱防止とを企図した耕耘爪の
取付装置を提供することを目的とする。In the above-mentioned conventional one, the engaging groove into which the engaging shaft portion of the mounting shaft is relatively inserted has a diameter substantially equal to that of the engaging shaft portion. It is only formed in the diameter, and no consideration was given to ease of insertion and removal prevention. Therefore, the present invention aims to facilitate the insertion of the engaging shaft portion into the engaging groove and considers prevention of slippage,
It is an object of the present invention to provide a device for attaching a tilling pawl, which is intended to facilitate the attachment of the engaging piece and prevent the detachment thereof.
【０００５】[0005]
【課題を解決するための手段】本発明が前記目的を達成
するために講じた技術的手段は、爪軸9 に固定された爪
取付ブラケット10の一対の対向壁14a,14b 間に耕耘爪11
の基部を挿入し、これら対向壁14a,14b および耕耘爪11
の基部に頭付取付軸18を挿通し、この取付軸18の頭部19
と一方の対向壁14a とで耕耘爪11の基部を挟持状に固定
すべく、一方の対向壁14a から突出する取付軸18の先端
側に固定具22を係合するようにした耕耘爪の取付装置で
あって、固定具22は、弾性板材で形成されて一方の対向
壁14a の反対向側に位置される係合片23を有し、この係
合片23に、取付軸18の先端側に設けた係止部20が挿脱可
能な挿脱孔26を形成すると共に、取付軸18の、係止部20
と一方の対向壁14a との間の係合軸部21を、挿脱孔26か
ら軸方向に直交する方向に挿入可能な係合溝27を形成
し、係合片23を、係合軸部21が係合溝27に挿入されるよ
うに移動させることで、係合溝27の両側縁部が係止部20
と一方の対向壁14a との間に係合してその弾性力によっ
て係止部20を一方の対向壁14a から離反する方向に付勢
するように該係合片23を弯曲形成したものにおいて、前
記係合溝27の係合軸部挿入側の溝幅を係合軸部21の径よ
りも大なる広幅に形成し、この広幅部28と係合片23の耕
耘爪固定位置における係合軸部21との間の、係合溝27の
溝幅を係合軸部21の径より小なる狭幅に形成した点にあ
る。The technical means taken by the present invention to achieve the above-mentioned object is to provide a plowing claw 11 between a pair of opposing walls 14a and 14b of a claw mounting bracket 10 fixed to a claw shaft 9.
Insert the base of each of the facing walls 14a, 14b and the tiller 11
Insert the head mounting shaft 18 into the base of the
In order to fix the base of the tiller claw 11 in a sandwiched manner with the one opposite wall 14a, the attachment of the tiller claw in which the fixing tool 22 is engaged with the tip end side of the mounting shaft 18 protruding from the one opposite wall 14a In the device, the fixture 22 has an engaging piece 23 formed of an elastic plate material and located on the opposite side of one of the facing walls 14a. The engaging piece 23 has a tip end side of the mounting shaft 18. The engaging portion 20 of the mounting shaft 18 is formed with an insertion / removal hole 26 through which the engaging portion 20 provided in the
The engaging shaft portion 21 between the one and the opposing wall 14a is formed with an engaging groove 27 into which the inserting / removing hole 26 can be inserted in a direction orthogonal to the axial direction, and the engaging piece 23 is provided with an engaging shaft portion. By moving 21 so as to be inserted into the engaging groove 27, both side edges of the engaging groove 27 are locked to the engaging portion 20.
And one of the opposing walls 14a is engaged with each other and the engaging piece 23 is curved so as to urge the locking portion 20 in a direction away from the one opposing wall 14a by its elastic force. The groove width of the engaging groove 27 on the engaging shaft portion insertion side is formed to be wider than the diameter of the engaging shaft portion 21, and the engaging shaft of the wide portion 28 and the engaging piece 23 at the cultivating claw fixing position. The groove width of the engaging groove 27 between the portion 21 and the portion 21 is formed to be narrower than the diameter of the engaging shaft portion 21.
【０００６】[0006]
【作用】耕耘爪11を爪取付ブラケット10に取付けるに
は、先ず耕耘爪11の基部を爪取付ブラケット10の対向壁
14a,14b 間に挿入し、対向壁14a,14b および耕耘爪11の
基部に取付軸18を挿通させる。次に、固定具22の係合片
23を爪取付ブラケット10の一方の対向壁14a の反対向側
面に位置させて、係合片23の挿脱孔26に取付軸18の係止
部20を挿通させる。この状態で、係合片23を、係合軸部
21が係合溝27に挿入されるように移動させる。すると、
係合溝27の両側縁部が係止部20と一方の対向壁14a との
間に係合してその弾性力によって係止部20を一方の対向
壁14a から離反する方向に付勢し、これによって、取付
軸18の頭部19と爪取付ブラケット10の一方の対向壁14a
とで耕耘爪11の基部が挟持状に固定される。そして、係
合溝27に係合軸部21を挿入する際には、係合溝27の挿入
側の溝幅が係合軸部21の径より広幅となっていることか
ら挿入が容易であり、しかも前記広幅部28と係合片23の
耕耘爪固定位置における係合軸部21との間の、係合溝27
の溝幅が係合軸部21の径より狭幅となっていることか
ら、係合軸部21が係合溝27から容易に抜けることがな
い。[Operation] To attach the tilling claw 11 to the claw mounting bracket 10, first, the base of the tilling claw 11 is placed on the opposite wall of the claw mounting bracket 10.
It is inserted between 14a and 14b, and the mounting shaft 18 is inserted into the bases of the opposing walls 14a and 14b and the tilling claw 11. Next, the engaging piece of the fixture 22
The engaging portion 20 of the mounting shaft 18 is inserted into the insertion / removal hole 26 of the engaging piece 23 by positioning 23 on the opposite side surface of the one opposing wall 14a of the claw mounting bracket 10. In this state, engage the engaging piece 23 with the engaging shaft portion.
21 is moved so as to be inserted into the engagement groove 27. Then,
Both side edges of the engaging groove 27 are engaged between the locking portion 20 and the one opposing wall 14a, and the elastic force of the engaging portion 20 urges the locking portion 20 away from the one opposing wall 14a. As a result, the head 19 of the mounting shaft 18 and one of the opposing walls 14a of the claw mounting bracket 10 are
The base of the tillage claw 11 is fixed in a sandwiched manner by and. When the engaging shaft portion 21 is inserted into the engaging groove 27, the insertion side groove width of the engaging groove 27 is wider than the diameter of the engaging shaft portion 21, so that the insertion is easy. Moreover, the engagement groove 27 between the wide width portion 28 and the engagement shaft portion 21 at the position where the engaging piece 23 is fixed to the tilling claw is provided.
Since the groove width is smaller than the diameter of the engaging shaft portion 21, the engaging shaft portion 21 does not easily come out of the engaging groove 27.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１乃至図１３は一実施例を示し、図８におい
て、1 はトラクタの後部に三点リンク機構を介して昇降
自在に装着されるロータリ耕耘装置である。このロータ
リ耕耘装置1 の機枠2 は、中央のギヤケース3 から左右
にサポートアーム4 を突設し、一方のサポートアーム4
外端にサイドフレーム5 を固定すると共に、他方のサポ
ートアーム4 外端にチェーンケース6 を固定して門型に
主構成されている。この機枠2 は、ギヤケース3 の左右
両側から突設されたトップマスト7 およびサポートアー
ム4 に固定されたブラケット8 を介して三点リンク機構
に取付けられる。Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 13 show an embodiment, and in FIG. 8, reference numeral 1 denotes a rotary tiller mounted on the rear part of a tractor via a three-point link mechanism so as to be movable up and down. The machine frame 2 of this rotary tiller 1 has support arms 4 protruding left and right from a central gear case 3 and one support arm 4
The side frame 5 is fixed to the outer end, and the chain case 6 is fixed to the outer end of the other support arm 4 to form a gate-type main structure. The machine frame 2 is attached to the three-point link mechanism via a top mast 7 protruding from both left and right sides of the gear case 3 and a bracket 8 fixed to a support arm 4.
【０００８】サイドフレーム5 とチエーンケース6 の下
部間には爪軸9 が左右方向の軸心廻り回転自在に支架さ
れ、この爪軸9 とこれに爪取付ブラケット10を介して取
付けられた多数の耕耘爪11等とから耕耘部12が構成され
ている。そして、トラクタのＰＴＯ軸の動力が、入力軸
13からギヤケース3 、サポートアーム4 およびチェーン
ケース6 にそれぞれ内蔵したギヤ、チェーン等の伝動機
構を介して爪軸9 に伝達されて、該爪軸9 が矢示Ａ方向
に回動駆動されるようになっている。A pawl shaft 9 is rotatably supported between the side frame 5 and the lower portion of the chain case 6 about the axis of rotation in the left-right direction, and is mounted on the pawl shaft 9 and a pawl mounting bracket 10 on the pawl shaft 9. A cultivating part 12 is composed of the cultivating claw 11 and the like. Then, the power of the PTO shaft of the tractor is changed to the input shaft.
13 is transmitted to the pawl shaft 9 via a transmission mechanism such as a gear and a chain incorporated in the gear case 3, the support arm 4 and the chain case 6, respectively, so that the pawl shaft 9 is rotationally driven in the direction of arrow A. It has become.
【０００９】爪取付ブラケット10は、図１乃至図４に示
すように、有底筒状の四角筒状に形成されていて、爪軸
9 に径方向外方突出状に固着されている。そして、この
爪取付ブラケット9 内には耕耘爪11の基部が挿入され
る。また、爪取付ブラケット10の爪軸心方向で対向する
一対の対向壁14a,14b の一方14a には円形の挿通孔15が
形成され、他方の対向壁14b には六角形の嵌合孔16が形
成され、耕耘爪11の基部には円形の貫通孔17が形成され
ている。これら、挿通孔15、嵌合孔16および貫通孔17に
取付軸18が挿通嵌合されており、この取付軸18によって
耕耘爪11が抜止めされている。As shown in FIG. 1 to FIG. 4, the pawl mounting bracket 10 is formed in the shape of a square cylinder with a bottom, and the pawl shaft.
It is fixed to 9 so as to project outward in the radial direction. Then, the base of the tilling claw 11 is inserted into the claw mounting bracket 9. In addition, a circular insertion hole 15 is formed in one of the pair of opposing walls 14a, 14b facing each other in the axial direction of the pawl mounting bracket 10, and a hexagonal fitting hole 16 is formed in the other opposing wall 14b. A circular through hole 17 is formed at the base of the tilling claw 11. A mounting shaft 18 is inserted into and fitted into the insertion hole 15, the fitting hole 16 and the through hole 17, and the plow claw 11 is retained by the mounting shaft 18.
【００１０】取付軸18の軸方向一端側には嵌合孔16に相
対回動不能に嵌合する六角形の頭部19を有し、この頭部
19の頂部19a は他方の対向壁14b から突出している。取
付軸18の先端側は一方の対向壁14a から突出しており、
この突出部分には、周方向の溝を形成することで、先端
部に係止部20が形成されると共に、取付軸18の突出部分
の係止部20と一方の対向壁14a との間が係合軸部21とさ
れている。A hexagonal head portion 19 which is fitted into the fitting hole 16 so as not to rotate relative to one another in the axial direction of the mounting shaft 18 is provided.
The top portion 19a of 19 projects from the other opposing wall 14b. The tip end side of the mounting shaft 18 projects from one opposing wall 14a,
By forming a groove in the circumferential direction on this projecting portion, a locking portion 20 is formed at the tip portion, and between the locking portion 20 of the projecting portion of the mounting shaft 18 and one of the opposing walls 14a. It is the engaging shaft portion 21.
【００１１】爪取付ブラケット10には取付軸18に係合し
て、これの抜止めをする固定具22が外嵌されている。こ
の固定具22はバネ鋼等の弾性を有する板材からなり、一
方の対向壁14a の反対向側面に位置される係合片23と、
他方の対向壁14b の反対向側面に位置される押圧片24
と、両者23,24 を連結する背壁25とから断面コ字形に折
曲形成されている。A fixing member 22 which engages with the mounting shaft 18 and prevents the mounting shaft 18 from coming off is externally fitted to the pawl mounting bracket 10. The fixture 22 is made of an elastic plate material such as spring steel, and has an engaging piece 23 positioned on the opposite side surface of one facing wall 14a,
The pressing piece 24 located on the opposite side surface of the other facing wall 14b
And a back wall 25 that connects the two and 23, 24 are bent to have a U-shaped cross section.
【００１２】押圧片24の先端側には取付軸18の頭部19に
接当する接当部24a が形成され、係合片23の先端側に
は、取付軸18の係止部20が軸方向に挿通可能な円形の挿
脱孔26が形成されると共に、この挿脱孔26から背壁25に
向けて、取付軸18の係合軸部21が軸方向に直交する方向
に挿入可能で且つ係止部20が軸方向挿通不能な係合溝27
が形成されている。この係合溝27は、挿入側部分が、そ
の溝幅Ｌ1 が係合軸部21の直径Ｄより大とされた広幅部
28とされ、この広幅部28と係合片23の耕耘爪固定位置に
おける係合軸部21との間が、その溝幅Ｌ2 が係合軸部21
の直径Ｄより小とされた狭幅部29とされている。A contact portion 24a for contacting the head portion 19 of the mounting shaft 18 is formed on the tip side of the pressing piece 24, and a locking portion 20 of the mounting shaft 18 is formed on the tip side of the engaging piece 23. A circular insertion / removal hole 26 that can be inserted in the direction is formed, and the engagement shaft portion 21 of the mounting shaft 18 can be inserted from the insertion / removal hole 26 toward the back wall 25 in a direction orthogonal to the axial direction. In addition, the engaging groove 27 in which the locking portion 20 cannot be inserted in the axial direction
Are formed. The engagement groove 27 has a wide portion in which the insertion portion has a groove width L 1 larger than the diameter D of the engagement shaft portion 21.
28, and the groove width L 2 between the wide width portion 28 and the engaging shaft portion 21 of the engaging piece 23 at the fixing position of the tilling claw has an engaging shaft portion 21.
The diameter is smaller than the diameter D of the narrow portion 29.
【００１３】また係合溝27の溝奥部分30の溝幅Ｌ3 は係
合軸部21の直径Ｄより大とされ、広幅部28と狭幅部29、
又は、狭幅部29と溝奥部分30とは夫々テーパ部31,32 を
介して連接されていて、係合片23の耕耘爪固定位置にお
いて、係合軸部21はテーパ部32に位置する。また、係合
片23の係合溝27長手方向中央側は一方の対向壁14a から
離反する方向に弯曲形成されている。そして、固定具22
を爪取付ブラケット10に嵌合させて、耕耘爪11を取付固
定するには、図５仮想線で示すように、固定具22の背壁
25を爪取付ブラケット10の爪軸回転方向Ａ前方側に位置
させて、係合片23の挿脱孔26を取付軸18の係止部20に対
応させると共に挿脱孔26に係止部20を挿通状として係合
片23を一方の対向壁14a に添接させる。この状態から、
図５実線で示すように、固定具22を爪軸回転方向Ａと反
対方向に移動させて、取付軸18の係合軸部21を係合溝27
の広幅部28に挿入状とすると共に、押圧片24を外方に拡
開させてその接当部24a を取付軸18の頭部19に接当させ
る。次に、前記状態から、背壁25をハンマー等で打撃し
て固定具22を爪軸回転方向Ａと反対方向に移動すること
によって、係合片23が係止部20と一方の対向壁14a との
間で弾性変形し、その弾性力により係止部20が一方の対
向壁14a から離反する方向に付勢されると共に、取付軸
18の頭部19は押圧片24の弾性力によって耕耘爪11の基部
に押圧され、これらによって、取付軸18の頭部19と爪取
付ブラケット10の一方の対向壁14a とで耕耘爪11の基部
が挟持状に固定される。Further, the groove width L 3 of the inner groove portion 30 of the engaging groove 27 is made larger than the diameter D of the engaging shaft portion 21, and the wide width portion 28 and the narrow width portion 29,
Alternatively, the narrow portion 29 and the groove inner portion 30 are connected to each other via the tapered portions 31 and 32, respectively, and the engaging shaft portion 21 is located in the tapered portion 32 at the position where the engaging piece 23 is fixed to the tilling claw. . Further, the center side of the engagement piece 23 in the longitudinal direction of the engagement groove 27 is formed to be curved in a direction away from the one opposing wall 14a. And the fixture 22
To fit and fix the cultivating claw 11 by fitting the claw to the claw mounting bracket 10, as shown by the phantom line in FIG.
25 is positioned on the front side of the pawl mounting bracket 10 in the pawl shaft rotation direction A so that the insertion / removal hole 26 of the engaging piece 23 corresponds to the locking portion 20 of the mounting shaft 18 and the locking portion 20 is inserted into the insertion / removal hole 26. Is inserted, and the engagement piece 23 is attached to one of the opposing walls 14a. From this state,
As shown by the solid line in FIG. 5, the fixture 22 is moved in the direction opposite to the claw shaft rotation direction A, and the engagement shaft portion 21 of the mounting shaft 18 is engaged with the engagement groove 27.
The pressing piece 24 is expanded outward so that the abutment portion 24a abuts the head portion 19 of the mounting shaft 18. Next, from the above state, the back wall 25 is hit with a hammer or the like to move the fixture 22 in the direction opposite to the pawl shaft rotation direction A, so that the engagement piece 23 and the engagement portion 20 and one opposing wall 14a. Elastically deforms between the engaging part 20 and the engaging wall 20 in the direction away from the opposing wall 14a, and the mounting shaft
The head 19 of 18 is pressed against the base of the tiller 11 by the elastic force of the pressing piece 24, and the head 19 of the mounting shaft 18 and one of the opposing walls 14a of the hook mounting bracket 10 thereby causes the base of the tiller 11 to move. Are fixed in a sandwiched manner.
【００１４】固定具22を打込む際、係合片23の係合溝27
の狭幅部29は、取付軸18の係合軸部21が相対的に通過す
る際には弾性的に拡開し、固定具22の打込み完了時には
係合軸部21がテーパ部32に位置して、元の状態に戻り、
係合軸部21の係合溝27からの抜けを防止する。また、係
合片23の耕耘爪11固定位置において、係合片23の頂部23
a は係止部20の爪軸回転方向Ａ後方側に位置し、係合片
23の先端側は一方の対向壁14a の外面より内方に位置し
ていて、固定具22の抜け方向への移動を規制している。When the fixture 22 is driven in, the engaging groove 27 of the engaging piece 23
The narrow portion 29 of the mounting shaft 18 elastically expands when the engaging shaft portion 21 of the mounting shaft 18 relatively passes therethrough, and the engaging shaft portion 21 is positioned at the taper portion 32 when the fixing tool 22 is driven in. And then return to the original state,
The engagement shaft portion 21 is prevented from coming off the engagement groove 27. Further, at the position where the engaging piece 23 is fixed to the tilling claw 11, the top portion 23 of the engaging piece 23 is
a is located on the rear side of the engaging portion 20 in the claw shaft rotation direction A, and
The tip end side of 23 is located inward of the outer surface of one of the opposing walls 14a, and restricts the movement of the fixture 22 in the pulling direction.
【００１５】前記爪取付ブラケット10の基部側は外方に
突出されて突出部33が形成されている。この突出部33の
爪軸9 径方向外方側の端面は、固定具22の打込方向に沿
う方向に形成されていて、一方の対向壁14a に形成され
た突出部33の該端面が、係合片23を打込方向 (又は反打
込方向) にガイドするガイド面34とされている。また、
このガイド面34によって係合片23の取付軸18軸心廻りの
回動が規制されている。また、突出部33を設けることに
よって、爪取付ブラケット10の溶接強度が向上されると
共に、図６および図７に示すように、爪軸9 の端部にお
いて、爪軸9 端部に固着したフランジ35に爪取付ブラケ
ット10を接当させて固着しても、前記フランジ35が固定
されると共にサイドフレーム5(又はチェーンケース) 側
に支持される端部軸36に固着したフランジ37と爪取付ブ
ラケット10との隙間の確保が十分に図れ、固定具22の係
合片23の挿入を可能とする。A protrusion 33 is formed on the base side of the pawl mounting bracket 10 so as to protrude outward. The end surface of the protruding portion 33 on the radially outer side of the claw shaft 9 is formed in a direction along the driving direction of the fixture 22, and the end surface of the protruding portion 33 formed on one of the opposing walls 14a is The guide surface 34 guides the engaging piece 23 in the driving direction (or the counter driving direction). Also,
The guide surface 34 restricts the rotation of the engagement piece 23 around the mounting shaft 18 axis. Further, by providing the protrusion 33, the welding strength of the pawl mounting bracket 10 is improved and, as shown in FIGS. 6 and 7, at the end of the pawl shaft 9, a flange fixed to the end of the pawl shaft 9 is provided. Even if the pawl mounting bracket 10 is abutted against and fixed to 35, the flange 35 is fixed and the flange 37 fixed to the end shaft 36 supported on the side frame 5 (or chain case) side and the pawl mounting bracket. A sufficient clearance can be secured with respect to 10, and the engagement piece 23 of the fixture 22 can be inserted.
【００１６】前記耕耘部12は耕耘カバー装置38によって
覆われ、該耕耘カバー装置38は、耕耘部12の上方を覆う
主カバー39と、該主カバー39の後端部に枢着された後部
カバー40と、耕耘部12の左右両側を覆う前後の側部カバ
ー41a,41b とから構成されている。また、図９に示すよ
うに、後部カバー40の後端左右両側には延長カバー42が
設けられている。図１０に示すように、後部カバー40に
一対のブラケット43を介して軸支された支軸44に一対の
取付ブラケット45が回動自在に支持され、この取付ブラ
ケット45に延長カバー42が固着されると共に、一方の取
付ブラケット45は支軸44に固着されたアーム46にボルト
を介して固定されていて、延長カバー42は支軸44の軸心
廻りに回動自在に取付支持されている。The cultivating part 12 is covered with a cultivating cover device 38. The cultivating cover device 38 includes a main cover 39 for covering the cultivating part 12 and a rear cover pivotally attached to a rear end of the main cover 39. 40 and front and rear side covers 41a and 41b that cover the left and right sides of the tilling part 12. Further, as shown in FIG. 9, extension covers 42 are provided on the left and right sides of the rear end of the rear cover 40. As shown in FIG. 10, a pair of mounting brackets 45 are rotatably supported on a support shaft 44 pivotally supported by a rear cover 40 via a pair of brackets 43, and an extension cover 42 is fixed to the mounting brackets 45. At the same time, one mounting bracket 45 is fixed to an arm 46 fixed to the support shaft 44 via a bolt, and the extension cover 42 is rotatably mounted and supported around the shaft center of the support shaft 44.
【００１７】前記延長カバー42は、機枠2 のギヤケース
3 の側方に設けた操作レバー47によって、連動機構を介
して、後部カバー40から左右方向外方に突出する延長姿
勢と、該延長姿勢から支軸44廻りに回動させて後部カバ
ー40の上方に位置する折畳み姿勢とに姿勢変更自在とさ
れている。前記連動機構は、図９乃至図１２に示すよう
に、トップマスト7 に固定のケース体48内に設けたプー
リ49と、後部カバー40後端側に固定のケース体50内に設
けたプーリ51と、これらプーリ49,51 を連動連結する一
対のケーブル52,53 とからなる。前記プーリ49は、ケー
ス体48に回動自在に支持されると共に操作レバー47が取
付けられた支軸54にスプライン嵌合され、プーリ51は、
ケース体50を貫通する前記支軸44にスプライン嵌合され
ている。また、ケーブル52,53 の一端はプーリ49の係止
部49a に、他端はプーリ51の係止部51a に係止され、こ
れらケーブル52,53 の一方52は延長カバー42の折畳み操
作用とされ、他方53は延長カバー42の展開操作用とされ
ていて、操作レバー47を回動操作することで、ケーブル
52,53の一方がプーリ49に巻取られると共にプーリ51か
ら巻出され、他方がプーリ49から巻出されると共にプー
リ51に巻取られ、延長カバー42が姿勢変更操作され得る
ようになっている。The extension cover 42 is a gear case of the machine frame 2.
By an operation lever 47 provided on the side of 3, an extended posture that protrudes outward from the rear cover 40 in the left-right direction via an interlocking mechanism, and from the extended posture, rotate around the support shaft 44 to rotate the rear cover 40. The posture can be freely changed between the folding posture and the folding posture. As shown in FIGS. 9 to 12, the interlocking mechanism includes a pulley 49 provided in a case body 48 fixed to the top mast 7 and a pulley 51 provided in a case body 50 fixed to the rear end side of the rear cover 40. And a pair of cables 52 and 53 for interlockingly connecting these pulleys 49 and 51. The pulley 49 is rotatably supported by the case body 48 and spline-fitted to a support shaft 54 to which an operation lever 47 is attached.
The support shaft 44 penetrating the case body 50 is spline-fitted. Further, one ends of the cables 52 and 53 are locked to the locking portion 49a of the pulley 49, and the other ends are locked to the locking portion 51a of the pulley 51. One of the cables 52 and 53 is used for folding the extension cover 42. On the other hand, the other 53 is for expanding the extension cover 42, and the cable can be operated by rotating the operation lever 47.
One of 52 and 53 is wound around the pulley 49 and unwound from the pulley 51, and the other is wound around the pulley 49 and wound around the pulley 51 so that the extension cover 42 can be changed in posture. .
【００１８】図１２および図１３に示すように、操作レ
バー47の基部側にはアーム55の一端が枢着され、アーム
55の他端には引張コイルバネ56の一端が掛合され、該コ
イルバネ56の他端はケース体48固定用のスペーサ57に掛
合されていて、コイルバネ56は、延長カバー42を延長姿
勢に操作したときには、延長カバー42を接地方向に付勢
し、延長カバー42を折畳み姿勢に操作したときには、延
長カバー42を後部カバー40側に付勢するように、付勢力
が切換えられるようになっている。As shown in FIGS. 12 and 13, one end of an arm 55 is pivotally attached to the base side of the operating lever 47.
One end of a tension coil spring 56 is engaged with the other end of 55, and the other end of the coil spring 56 is engaged with a spacer 57 for fixing the case body 48. The urging force can be switched so that the extension cover 42 is urged toward the ground and the extension cover 42 is urged toward the rear cover 40 when the extension cover 42 is operated in the folded posture.
【００１９】図１４および図１５は変形例を示し、固定
具22の係合片23に、爪取付ブラケット10に掛合して固定
具20の爪取付ブラケット10からの離脱を阻止する抜止部
58を設けたものである。図１６は他の変形例を示し、係
合溝27の溝奥部分30も狭幅部29と同様の溝幅に形成した
ものであり、この場合、係合片23の耕耘爪11固定位置で
は、係合溝27は弾性的に拡開した状態で取付軸18の係合
軸部21に嵌合している。14 and 15 show a modified example, in which the engaging piece 23 of the fixing tool 22 is engaged with the claw mounting bracket 10 to prevent the fixing tool 20 from being detached from the claw mounting bracket 10.
58 is provided. FIG. 16 shows another modified example, in which the inner groove portion 30 of the engaging groove 27 is also formed to have the same groove width as the narrow width portion 29. In this case, at the position where the engaging piece 23 is fixed to the tilling claw 11. The engagement groove 27 is fitted into the engagement shaft portion 21 of the mounting shaft 18 in a state where it is elastically expanded.
【００２０】図１７は本発明に対する比較例を示し、固
定具59の係合片60を二股に形成して、係合溝61の係合軸
部21挿入側を開放状としたものである。このものである
と、係合軸部21の係合溝61への相対挿入は容易である
が、反面抜け易いものである。FIG. 17 shows a comparative example with respect to the present invention, in which the engaging piece 60 of the fixture 59 is bifurcated so that the engaging shaft portion 21 insertion side of the engaging groove 61 is open. With this structure, the relative insertion of the engagement shaft portion 21 into the engagement groove 61 is easy, but the engagement shaft portion 21 is easily pulled out.
【００２１】[0021]
【発明の効果】本発明によれば、固定具22の係合片23を
取付軸18に係合して耕耘爪11を爪取付ブラケット10に取
付固定する際、係合片23に形成した係合溝27の係合軸部
挿入側の溝幅が係合軸部21の径よりも広幅になっている
ので、係合軸部21の係合溝27への相対挿入が容易であ
り、しかも、係合溝27の広幅部28と係合片23の耕耘爪固
定位置における係合軸部21との間の、係合溝27の溝幅を
係合軸部21の径より狭幅に形成しているので、係合軸部
21の係合溝27からの抜け防止が図られている。According to the present invention, when the engaging piece 23 of the fixture 22 is engaged with the mounting shaft 18 to fix the tilling claw 11 to the claw mounting bracket 10, the engagement piece 23 is formed on the engaging piece 23. Since the groove width of the engaging groove 27 on the engaging shaft portion insertion side is wider than the diameter of the engaging shaft portion 21, it is easy to relatively insert the engaging shaft portion 21 into the engaging groove 27, and The groove width of the engagement groove 27 between the wide width portion 28 of the engagement groove 27 and the engagement shaft portion 21 of the engagement piece 23 at the tilling claw fixing position is formed to be narrower than the diameter of the engagement shaft portion 21. Since it is engaged,
It is intended to prevent the 21 from coming off from the engagement groove 27.
【００２２】また、係合軸部21が係合溝27の狭幅部29を
通過する際には、狭幅部29が弾性的に拡開して係合軸部
21の通過を許容するのであるが、抵抗が大きく、係合片
23をハンマー等で打撃することによって移動させる場
合、打撃位置が悪いと係合片23が係合軸部21廻りに回動
してしまう惧れがある。そこで、爪取付ブラケット10の
一方の対向壁14a の基部側を外方に突出し、この突出部
33に係合片23をガイドするガイド面34を形成すること
で、係合片23の移動をスムーズに行ない得る。また、特
に、一方の対向壁14a の基部側を突出させているので、
爪取付ブラケット10を爪軸9 に溶接する際における溶接
強度が大となる。Further, when the engaging shaft portion 21 passes through the narrow width portion 29 of the engaging groove 27, the narrow width portion 29 elastically expands to engage the engaging shaft portion.
It allows the passage of 21, but the resistance is large and the engaging piece
When the 23 is moved by hitting with a hammer or the like, if the hitting position is bad, the engaging piece 23 may rotate around the engaging shaft portion 21. Therefore, one of the opposing walls 14a of the claw mounting bracket 10 is projected outward from the base side, and
By forming the guide surface 34 for guiding the engagement piece 23 on the 33, the engagement piece 23 can be moved smoothly. Further, in particular, since the base side of one of the opposing walls 14a is projected,
The welding strength at the time of welding the pawl mounting bracket 10 to the pawl shaft 9 becomes large.
【図１】全体側面図である。FIG. 1 is an overall side view.
【図２】図１の平面断面図である。FIG. 2 is a plan sectional view of FIG.
【図３】爪取付ブラケットに装着していない状態の固定
具の平面図である。FIG. 3 is a plan view of the fixture without being attached to the claw mounting bracket.
【図４】背面断面図である。FIG. 4 is a rear cross-sectional view.
【図５】作用状態を示す平面断面図である。FIG. 5 is a plan sectional view showing an operating state.
【図６】爪軸端部の背面断面図である。FIG. 6 is a rear sectional view of a pawl shaft end portion.
【図７】爪軸端部の側面図である。FIG. 7 is a side view of an end portion of a pawl shaft.
【図８】耕耘装置の側面図である。FIG. 8 is a side view of the tiller.
【図９】耕耘装置の背面図である。FIG. 9 is a rear view of the tiller.
【図１０】延長カバー取付部の背面断面図である。FIG. 10 is a rear cross-sectional view of an extension cover mounting portion.
【図１１】延長カバー取付部の側面断面図である。FIG. 11 is a side sectional view of an extension cover attachment portion.
【図１２】延長カバー操作部の背面断面図である。FIG. 12 is a rear cross-sectional view of an extension cover operating unit.
【図１３】延長カバー操作部の側面図である。FIG. 13 is a side view of an extension cover operating unit.
【図１４】変形例を示す平面断面図である。FIG. 14 is a plan sectional view showing a modified example.
【図１５】変形例を示す固定具の側面図である。FIG. 15 is a side view of a fixture showing a modified example.
【図１６】他の変形例を示す側面図である。FIG. 16 is a side view showing another modification.
【図１７】比較例を示す側面図である。FIG. 17 is a side view showing a comparative example.
９ 爪軸 10 爪取付ブラケット 11 耕耘爪 14a 対向壁 14b 対向壁 18 取付軸 19 頭部 20 係止部 21 係合軸部 22 固定具 23 係合片 26 挿脱孔 27 係合溝 28 広幅部 29 狭幅部 33 突出部 34 ガイド面 9 Claw Shaft 10 Claw Mounting Bracket 11 Tilling Claw 14a Opposing Wall 14b Opposing Wall 18 Mounting Shaft 19 Head 20 Locking Part 21 Engaging Shaft Part 22 Fixing Tool 23 Engaging Piece 26 Insertion / Extraction Hole 27 Engaging Groove 28 Wide Part 29 Narrow portion 33 Projection 34 Guide surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田井 通生 大阪府堺市石津北町64番地 株式会社クボ タ堺製造所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsusei Tai, 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.
Claims (2)
(10)の一対の対向壁(14a),(14b) 間に耕耘爪(11)の基部
を挿入し、これら対向壁(14a),(14b) および耕耘爪(11)
の基部に頭付取付軸(18)を挿通し、この取付軸(18)の頭
部(19)と一方の対向壁(14a) とで耕耘爪(11)の基部を挟
持状に固定すべく、一方の対向壁(14a) から突出する取
付軸(18)の先端側に固定具(22)を係合するようにした耕
耘爪の取付装置であって、固定具(22)は、弾性板材で形
成されて一方の対向壁(14a) の反対向側に位置される係
合片(23)を有し、この係合片(23)に、取付軸(18)の先端
側に設けた係止部(20)が挿脱可能な挿脱孔(26)を形成す
ると共に、取付軸(18)の、係止部(20)と一方の対向壁(1
4a) との間の係合軸部(21)を、挿脱孔(26)から軸方向に
直交する方向に挿入可能な係合溝(27)を形成し、係合片
(23)を、係合軸部(21)が係合溝(27)に挿入されるように
移動させることで、係合溝(27)の両側縁部が係止部(20)
と一方の対向壁(14a) との間に係合してその弾性力によ
って係止部(20)を一方の対向壁(14a) から離反する方向
に付勢するように該係合片(23)を弯曲形成したものにお
いて、 前記係合溝(27)の係合軸部挿入側の溝幅を係合軸部(21)
の径よりも大なる広幅に形成し、この広幅部(28)と係合
片(23)の耕耘爪固定位置における係合軸部(21)との間
の、係合溝(27)の溝幅を係合軸部(21)の径より小なる狭
幅に形成したことを特徴とする耕耘爪の取付装置。1. A claw mounting bracket fixed to a claw shaft (9).
Insert the base of the tilling claw (11) between the pair of facing walls (14a), (14b) of (10), and then face the facing walls (14a), (14b) and the tilling claw (11).
Insert the head-mounted mounting shaft (18) into the base of, and fix the base of the plowing claw (11) between the head (19) of this mounting shaft (18) and one opposing wall (14a) in a clamped manner. A mounting device for a tilling claw in which a fixing tool (22) is engaged with a tip end side of a mounting shaft (18) protruding from one opposing wall (14a), and the fixing tool (22) is an elastic plate material. Has an engaging piece (23) formed on the opposite side of one of the facing walls (14a), and the engaging piece (23) is provided on the tip side of the mounting shaft (18). The stopper (20) forms an insertion / removal hole (26) in which the stopper (20) can be inserted / removed, and the locking shaft (20) and one opposing wall (1) of the mounting shaft (18) are formed.
The engaging shaft portion (21) with respect to 4a) is formed with an engaging groove (27) into which the engaging shaft portion (21) can be inserted from the inserting / removing hole (26) in a direction orthogonal to the axial direction,
By moving the engaging shaft portion (21) so that the engaging shaft portion (21) is inserted into the engaging groove (27), both side edges of the engaging groove (27) are locked to the engaging portion (20).
And the engagement piece (23) so as to urge the locking portion (20) away from the one opposing wall (14a) by the elastic force of the engaging portion (23). ), The groove width of the engaging groove (27) on the engaging shaft portion insertion side is set to the engaging shaft portion (21).
The width of the engaging groove (27) between the wide portion (28) and the engaging shaft portion (21) of the engaging piece (23) at the tilling claw fixing position is larger than the diameter of the engaging groove (27). A device for mounting a plowing pawl, characterized in that the width is formed to be narrower than the diameter of the engaging shaft portion (21).
される基部側を外方に突出し、この突出部(33)に、係合
片(23)を移動方向にガイドするガイド面(34)を形成した
ことを特徴とする耕耘爪の取付装置。2. One of the opposing walls (14a) has a base side fixed to the claw shaft (19) protruding outwardly, and an engaging piece (23) is guided in the moving direction to the protruding portion (33). A mounting device for a tilling claw, which is characterized in that a guide surface (34) is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4234884A JP2721623B2 (en) | 1992-09-02 | 1992-09-02 | Tiller mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4234884A JP2721623B2 (en) | 1992-09-02 | 1992-09-02 | Tiller mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0678601A true JPH0678601A (en) | 1994-03-22 |
| JP2721623B2 JP2721623B2 (en) | 1998-03-04 |
Family
ID=16977835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4234884A Expired - Fee Related JP2721623B2 (en) | 1992-09-02 | 1992-09-02 | Tiller mounting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2721623B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861113A (en) * | 1987-02-25 | 1989-08-29 | Topy Kogyo Kabushiki Kaisha | Cast wheel |
| EP0480039A4 (en) * | 1990-03-27 | 1993-03-10 | Toray Industries, Inc. | Composite membrane |
| JP2007055370A (en) * | 2005-08-23 | 2007-03-08 | Japan Climate Systems Corp | Vehicular air conditioner |
| WO2015069251A1 (en) * | 2013-11-07 | 2015-05-14 | Volvo Construction Equipment Ab | Coupling device for a construction machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02134802U (en) * | 1989-04-07 | 1990-11-08 | ||
| JPH0452401U (en) * | 1990-09-11 | 1992-05-01 | ||
| JP3022602U (en) * | 1995-09-12 | 1996-03-26 | 株式会社ヒラノ | Water stopper for female connection port of reinforced plastic composite pipe |
-
1992
- 1992-09-02 JP JP4234884A patent/JP2721623B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02134802U (en) * | 1989-04-07 | 1990-11-08 | ||
| JPH0452401U (en) * | 1990-09-11 | 1992-05-01 | ||
| JP3022602U (en) * | 1995-09-12 | 1996-03-26 | 株式会社ヒラノ | Water stopper for female connection port of reinforced plastic composite pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861113A (en) * | 1987-02-25 | 1989-08-29 | Topy Kogyo Kabushiki Kaisha | Cast wheel |
| EP0480039A4 (en) * | 1990-03-27 | 1993-03-10 | Toray Industries, Inc. | Composite membrane |
| JP2007055370A (en) * | 2005-08-23 | 2007-03-08 | Japan Climate Systems Corp | Vehicular air conditioner |
| WO2015069251A1 (en) * | 2013-11-07 | 2015-05-14 | Volvo Construction Equipment Ab | Coupling device for a construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2721623B2 (en) | 1998-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0678601A (en) | Apparatus for attaching tilling tine | |
| KR200269560Y1 (en) | working machine connecting device of tractor | |
| JP4733593B2 (en) | Belt guide device | |
| JPH06276801A (en) | Device for attaching tillage tine | |
| JP4246128B2 (en) | Wire attachment device | |
| JP2504234Y2 (en) | Fixing tool for mounting the plow tab | |
| JP2509720Y2 (en) | Tiller mounting device | |
| JP5231363B2 (en) | Working machine stand device | |
| JPH0729764Y2 (en) | Tiller mounting device | |
| JP2514223B2 (en) | Tiller mounting device | |
| JP4344254B2 (en) | Stopper device | |
| JP3599545B2 (en) | Clutch operating device for walking type working machine | |
| KR20230091774A (en) | Bearing structure of resistance rod and walking type management machine | |
| JPH076726Y2 (en) | Tiller mounting device | |
| JPH08182420A (en) | Culm-raising apparatus | |
| JPH076727Y2 (en) | Tiller mounting device | |
| JPH08816Y2 (en) | Connecting device between tractor and tiller | |
| JP2816141B2 (en) | Biasing members such as resistance rods in tillers | |
| JPH0441773Y2 (en) | ||
| JPH0427282Y2 (en) | ||
| JP2514259B2 (en) | Flap cover attachment device for cultivator | |
| JPH067761B2 (en) | Tiller mounting device | |
| JP3030677U (en) | Wheel attachment / detachment and its wheel attachment / detachment structure for an agricultural power machine | |
| JPH05184203A (en) | Side driving type rotary | |
| JPH0742242Y2 (en) | Tiller mounting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |