JP2645570B2 - Tillage claw mounting device - Google Patents

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION 【産業上の利用分野】[Industrial applications]

本発明は、耕耘軸に設けたホルダに対し、従来一般に
使用されている耕耘爪の取付け基部を、ボルト・ナット
を用いることなく簡単，容易に着脱できるようにした耕
耘爪取付け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 tilling claw mounting device in which a mounting base of a tilling claw conventionally used generally can be easily and easily attached to and detached from a holder provided on a tilling shaft without using bolts and nuts. .

【従来の技術】[Prior art]

耕耘軸に設けたホルダに対し耕耘爪の取付け基部を着
脱する耕耘爪取付け装置においては、一般に、ホルダお
よび取付け基部に回転方向と直交する方向に挿通孔を穿
設し、この挿通孔にボルトを挿通してナットで締付けて
固定するようにしている。ところが、耕耘爪は土中で使
用されるものであり、耕耘爪を交換する際には、ボル
ト，ナットが錆びていたり、また、固く締った状態であ
るとその取外しが面倒であり、多くの労力と時間を有す
る問題がある。このような問題を解決するために、例え
ば実公昭47−9603号公報に開示されているように、耕耘
軸に設けたホルダに耕耘爪の取付け基部を嵌挿し、ホル
ダおよび耕耘爪に穿設した挿通孔に爪ピンを挿通し、こ
の爪ピンをばね板部材で押圧して抜止めするようにした
ものが知られている。2. Description of the Related Art In a tilling claw mounting device for attaching and detaching a tilling claw mounting base to and from a holder provided on a tilling shaft, generally, an insertion hole is formed in the holder and the mounting base in a direction orthogonal to the rotation direction, and a bolt is inserted into this insertion hole. It is inserted and tightened with a nut to fix it. However, the tilling nails are used in the soil, and when replacing the tilling nails, the bolts and nuts are rusted, and if they are firmly tightened, their removal is troublesome, and There is a problem with labor and time. In order to solve such a problem, for example, as disclosed in Japanese Utility Model Publication No. 47-9603, a mounting base of a tilling claw was inserted into a holder provided on a tilling shaft, and was drilled in the holder and the tilling claw. It is known that a claw pin is inserted into an insertion hole and the claw pin is pressed by a spring plate member to prevent the claw pin from being removed.

【発明が解決しようとする課題】[Problems to be solved by the invention]

しかし、上記先行技術のものでは、ばね板部材が平面
視Ｕ字状をしていて爪ピンの両端を押圧する形式のた
め、ばね板の弾持力が問題となり、爪とホルダのガタを
ばね板全体が吸収するようになるので、完全な固定状態
が維持できず、ばね板部材が外れ易く、ばね板部材が外
れると爪ピンが抜けて耕耘爪が抜け出るなどの問題点が
あった。However, in the prior art, since the spring plate member has a U-shape in plan view and presses both ends of the claw pin, the elastic force of the spring plate becomes a problem, and the play between the claw and the holder is reduced by the spring. Since the entire plate is absorbed, a completely fixed state cannot be maintained, and the spring plate member is likely to come off. When the spring plate member comes off, there have been problems such that the claw pin comes off and the tilling nail comes off.

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

本発明は上記の課題を解決すべくなされたもので、 ．耕耘軸１に設けたホルダ２に耕耘爪３の取付け基部
を嵌挿し、ホルダ２および耕耘爪３に穿設した挿通孔に
爪ピン４を挿通し、この爪ピン４をばね板部材５で押圧
して抜止めするようにした耕耘爪取付け装置において、 上記ばね板部材５は、一端をホルダ２の一側面先端部
に枢支ピン６を介して枢支して他端側をホルダ２の他側
面に沿って所定の範囲で回動可能とし、 ばね板部材５の他端側には、爪ピン４の頭部4aに接し
て押圧する爪ピン押圧部5cを形成したことを特徴として
いる。 ．上記ばね板部材５の爪ピン押圧部5cに、爪ピン頭部
4aに形成した係合突起4cまたは係合凹部と係合する係合
凹部5dまたは係合突起を設けたことを特徴としている。The present invention has been made to solve the above problems, and The mounting base of the tilling claw 3 is inserted into the holder 2 provided on the tilling shaft 1, the claw pin 4 is inserted into the insertion hole formed in the holder 2 and the tilling claw 3, and the claw pin 4 is pressed by the spring plate member 5. In the tilling claw mounting device, the spring plate member 5 is pivotally supported at one end on one side of the holder 2 via a pivot pin 6 and the other end is connected to the other end of the holder 2. It is rotatable within a predetermined range along the side surface, and a claw pin pressing portion 5c is formed on the other end of the spring plate member 5 so as to contact and press the head 4a of the claw pin 4. . The claw pin pressing portion 5c of the spring plate member 5 has a claw pin head
The present invention is characterized in that an engaging recess 5d or an engaging protrusion that engages with the engaging protrusion 4c or the engaging recess formed in 4a is provided.

【作 用】[Operation]

上記の構成によって本発明の耕耘爪取付け装置は、従
来の耕耘爪３を用いてこの耕耘爪３をホルダ２に装着し
た状態では、ばね板部材５により爪ピン４の頭部を押圧
して爪ピン４がホルダ２から簡単には外れることなく安
全であり、また、ばね板部材５はホルダ２から外れるこ
とがないので紛失することがなく、さらに、ホルダ２か
ら耕耘爪３を取外す際にはばね板部材５を回動させるだ
けで簡単に外せ、耕耘爪３の着脱操作が簡単に、短時間
で行える。With the above configuration, the tilling claw mounting device of the present invention presses the head of the claw pin 4 by the spring plate member 5 when the tilling claw 3 is mounted on the holder 2 using the conventional tilling claw 3. The pin 4 does not easily come off from the holder 2 and is safe. The spring plate member 5 does not come off from the holder 2 so that it is not lost. Further, when removing the tilling claw 3 from the holder 2, By simply rotating the spring plate member 5, it can be easily removed, and the operation of attaching and detaching the tilling claw 3 can be performed easily and in a short time.

【実 施 例】【Example】

以下、図面を参照して本発明の実施例について説明す
る。 第１図および第２図において、符号１はロータリ耕耘
装置、あるいはロータリ代掻装置の耕耘軸で、この耕耘
軸１には放射方向にホルダ２が固設され、このホルダ２
は、耕耘爪３の取付け基部が着脱可能に取付けられるよ
うになっている。 ホルダ２は、基端側を耕耘爪１に対し溶接により固着
し、他端側を開放して爪基部挿入孔2aを形成し、この爪
基部挿入孔2aを左右に貫通するようにして一側が六角
形，他側がこれより小径の円形の爪ピン挿通孔2bが形成
されている。この爪ピン挿通孔2bには、爪基部挿入孔2a
に耕耘爪３の基部を挿入した状態で第５図および第６図
に詳細に示す爪ピン４が挿通されるようになっている。 上記爪ピン４は六角頭部4aとピン本体4bとからなり、
六角頭部4aには係合突起4cが形成されている。係合突起
4cは係合凹部に形成してもよいものである。 上記ホルダ２の一側面先端部には、後述するばね板５
の基端部が枢支ピン６を介して枢着されている。 ばね板５は、第３図および第４図に示すように、ピン
挿通孔5aを基部側の回動板部5bからコ字状に屈曲して押
圧部5cを形成し、その先端側に爪ピン４の係合突起4cと
係合して押圧する係合凹部5dを形成している。この係合
凹部5dは係合突起にしてもよいものである。 このような構成の耕耘爪取付け装置においては、耕耘
爪３をホルダ２に取付けるときは、第１図の仮想線で示
すようにばね板５を枢支ピン６を中心にして時計方向に
回動させ、耕耘爪３の取付け基部を爪基部挿入孔2a内に
挿入し、爪ピン挿通孔2bに爪ピン４を挿通させ、ばね板
５を第１図の実線で示すように反時計方向に回転させる
と、第２図にも示すように係合凹部5dが爪ピン４の係合
突起4cと係合して頭部を押圧して抜止めする。また、ば
ね板５は耕耘軸１の回転方向に対し後側に位置してい
る。そして、耕耘軸１を第１図の矢印方向に回転するこ
とで、耕耘爪３は耕耘、または代掻き作業を行う。 耕耘爪３をホルダ２から取外すときは、ばね板５に適
宜な手段で衝撃を与えてばね板５を第１図で時計方向に
回動させると、爪ピン４の係合突起4cからばね板５の係
合凹部5dが外れて爪ピン挿通孔2bから爪ピン４を抜脱
し、耕耘爪３の取付け基部を爪基部挿入孔2aから抜出せ
ばよい。従って、短時間に、かつ簡単，容易に取外すこ
とができる。 なお、上記ばね板５の回動動作は、適宜な工具でばね
板５の端縁を叩打するようにして行うことができるが、
専用の治具を用意して行うようにしてもよい。Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a rotary tilling device or a rotary tilling shaft of a rotary scraping device, and a holder 2 is fixed to the rotary tilling shaft 1 in a radial direction.
Is designed such that the mounting base of the tilling claw 3 is detachably attached. The holder 2 has the base end side fixed to the tilling claw 1 by welding, and the other end side is opened to form a claw base insertion hole 2a, and one side is formed so as to penetrate the claw base insertion hole 2a left and right. A circular claw pin insertion hole 2b having a hexagonal shape and a smaller diameter on the other side is formed. The claw pin insertion hole 2b has a claw base insertion hole 2a.
5 and 6, a claw pin 4 shown in detail in FIG. 5 and FIG. 6 is inserted. The claw pin 4 includes a hexagonal head 4a and a pin body 4b,
An engagement protrusion 4c is formed on the hexagonal head 4a. Engagement projection
4c may be formed in the engagement recess. A spring plate 5 to be described later is provided at one end of the side surface of the holder 2.
Is pivotally connected via a pivot pin 6. As shown in FIGS. 3 and 4, the spring plate 5 bends the pin insertion hole 5a into a U-shape from the base side rotating plate portion 5b to form a pressing portion 5c. An engagement recess 5d is formed which engages and presses with the engagement protrusion 4c of the pin 4. The engagement recess 5d may be an engagement protrusion. In the tilling claw mounting device having such a configuration, when the tilling claw 3 is mounted on the holder 2, the spring plate 5 is rotated clockwise about the pivot pin 6 as shown by a virtual line in FIG. Then, the mounting base of the tilling claw 3 is inserted into the claw base insertion hole 2a, the claw pin 4 is inserted through the claw pin insertion hole 2b, and the spring plate 5 is rotated counterclockwise as shown by a solid line in FIG. Then, as shown in FIG. 2, the engaging recess 5d engages with the engaging protrusion 4c of the claw pin 4 to press the head and prevent the head from being pulled out. The spring plate 5 is located on the rear side with respect to the rotation direction of the tilling shaft 1. Then, by rotating the tilling shaft 1 in the direction of the arrow in FIG. 1, the tilling claw 3 performs tilling or scraping work. When removing the tilling claw 3 from the holder 2, an impact is applied to the spring plate 5 by an appropriate means to rotate the spring plate 5 clockwise in FIG. The engaging recess 5d of 5 is disengaged, the claw pin 4 is removed from the claw pin insertion hole 2b, and the mounting base of the tilling claw 3 may be removed from the claw base insertion hole 2a. Therefore, it can be easily and easily removed in a short time. The rotation of the spring plate 5 can be performed by hitting the edge of the spring plate 5 with an appropriate tool.
A dedicated jig may be prepared and performed.

【発明の効果】【The invention's effect】

以上説明したように、本発明の耕耘爪取付け装置によ
れば、ばね板部材５は、一端をホルダ２の一側面先端部
に枢支ピン６を介して枢支して他端側をホルダ２の他側
面に沿って所定の範囲で回動可能としたので、ばね板部
材５がホルダ２から外れることがなく、紛失するおそれ
がないばかりでなくばね板部材５の回動動作が容易とな
り弾持効果を確実にする。従って、爪ピン４の抜止めを
確実にし、安全な作業が行え、また、ホルダ２に対する
耕耘爪３の着脱が容易に行える。 また、ばね板部材５の他端側には、爪ピン４の頭部4a
に接して押圧する爪ピン押圧部5cを形成したので、耕耘
爪３とホルダ２のガタつきに影響されることなく爪ピン
４を押圧し、その抜止め，ひいては耕耘爪３の抜出しを
確実に防止できる。 さらに、ばね板部材５の爪ピン押圧部5cに、爪ピン頭
部4aに形成した係合突起4cまたは係合凹部と係合する係
合凹部5dまたは係合突起を設けたので、ばね板部材５の
爪ピン４の押圧が簡単には解除されず、爪ピン４の抜出
し防止がより確実に行われる。As described above, according to the tilling claw mounting device of the present invention, the spring plate member 5 pivotally supports one end to one end of one side of the holder 2 via the pivot pin 6 and the other end to the holder 2. Is rotatable within a predetermined range along the other side surface, so that the spring plate member 5 does not come off the holder 2 and not only is not lost, but also the rotation operation of the spring plate member 5 becomes easy. To ensure long-term effectiveness. Therefore, it is possible to reliably prevent the claw pin 4 from being removed, to perform a safe operation, and to easily attach and detach the tilling claw 3 to and from the holder 2. The head 4a of the claw pin 4 is provided on the other end of the spring plate member 5.
Since the claw pin pressing portion 5c is formed to press against the surface of the cultivator, the claw pin 4 is pressed without being affected by backlash between the cultivating claw 3 and the holder 2, and the removal of the cultivating claw 3 is ensured. Can be prevented. Further, the claw pin pressing portion 5c of the spring plate member 5 is provided with the engagement recess 4d or the engagement protrusion which engages with the engagement protrusion 4c or the engagement recess formed on the claw pin head 4a. The pressing of the claw pin 4 of 5 is not easily released, and the removal of the claw pin 4 is more reliably prevented.

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

第１図は本発明の耕耘爪取付け装置全体の側面図、第２
図は第１図のII−II線に沿う断面図、第３図はばね板部
材の平面図、第４図は同側面図、第５図は爪ピンの側面
図、第６図は同正面図である。 １……耕耘軸、２……ホルダ、2a……爪基部挿入孔、2b
……爪ピン挿入孔、３……耕耘爪、４……爪ピン、4a…
…六角頭部、4b……ピン本体、4c……係合突起、５……
ばね板、5a……ピン挿通孔、5b……回動板部、5c……押
圧部、5d……係合凹部、６……枢支ピン。FIG. 1 is a side view of the entire tilling claw mounting device of the present invention, and FIG.
FIG. 3 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a plan view of a spring plate member, FIG. 4 is a side view thereof, FIG. 5 is a side view of a claw pin, and FIG. FIG. 1 ... tillage shaft, 2 ... holder, 2a ... claw base insertion hole, 2b
... Claw pin insertion hole, 3 ... Tilling claw, 4 ... Claw pin, 4a ...
... Hex head, 4b ... Pin body, 4c ... Engagement projection, 5 ...
Spring plate, 5a: Pin insertion hole, 5b: Rotating plate portion, 5c: Pressing portion, 5d: Engagement recess, 6: Pivot pin.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】耕耘軸（１）に設けたホルダ（２）に耕耘
爪（３）の取付け基部を嵌挿し、ホルダ（２）および耕
耘爪（３）に穿設した挿通孔に爪ピン（４）を挿通し、
この爪ピン（４）をばね板部材（５）で押圧して抜止め
するようにした耕耘爪取付け装置において、 上記ばね板部材（５）は、一端をホルダ（２）の一側面
先端部に枢支ピン（６）を介して枢支して他端側をホル
ダ（２）の他側面に沿って所定の範囲で回動可能とし、 ばね板部材（５）の他端側には、爪ピン（４）の頭部
（4a）に接して押圧する爪ピン押圧部（5c）を形成して
なる耕耘爪取付け装置。1. A mounting base of a tilling claw (3) is inserted into a holder (2) provided on a tilling shaft (1), and a claw pin (3) is inserted into an insertion hole formed in the holder (2) and the tilling claw (3). 4)
In the tilling claw mounting device in which the claw pin (4) is pressed by a spring plate member (5) to prevent the claw pin from being pulled out, one end of the spring plate member (5) is attached to one side end of the holder (2). The other end is pivotally supported within a predetermined range along the other side of the holder (2) by pivotal support via a pivot pin (6), and a claw is provided on the other end of the spring plate member (5). A tilling claw mounting device formed with a claw pin pressing portion (5c) for pressing against the head (4a) of the pin (4). 【請求項２】上記ばね板部材（５）の爪ピン押圧部（5
c）に、爪ピン頭部（4a）に形成した係合突起（4c）ま
たは係合凹部と係合する係合凹部（5d）または係合突起
を設けてなる請求項１記載の耕耘爪取付け装置。2. A claw pin pressing portion (5) of said spring plate member (5).
2. The tilling claw attachment according to claim 1, wherein c) is provided with an engaging projection (4c) formed on the claw pin head (4a) or an engaging recess (5d) or an engaging projection engaging with the engaging recess. apparatus.