JP3137952B2 - Arm extension mechanism for construction machinery - Google Patents
Arm extension mechanism for construction machineryInfo
- Publication number
- JP3137952B2 JP3137952B2 JP11077576A JP7757699A JP3137952B2 JP 3137952 B2 JP3137952 B2 JP 3137952B2 JP 11077576 A JP11077576 A JP 11077576A JP 7757699 A JP7757699 A JP 7757699A JP 3137952 B2 JP3137952 B2 JP 3137952B2
- Authority
- JP
- Japan
- Prior art keywords
- arm
- extension
- shaft
- rod
- main body
- 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 - Fee Related
Links
Landscapes
- Manipulator (AREA)
- Shovels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建設機械のアーム
長を延長するため、本体アームに延在して構成するアー
ム延長機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arm extension mechanism that extends from a main body arm to extend the arm length of a construction machine.
【０００２】[0002]
【従来の技術】建設機械は、屈曲するブームにシリンダ
(油圧シリンダ)を装着した本体アームを連結し、この本
体アームに様々な種類のバケット等、アタッチメントを
取り付けて、掘削や破砕といった作業に供する。作業
上、建設機械の標準的なアーム長だけでは短い場合が生
じれば、本体アームに延在してアーム延長機構を構成
し、アーム長の延長を図る。2. Description of the Related Art Construction machines use a bending boom and a cylinder.
(Hydraulic cylinder) is connected to a main body arm, and various types of buckets and other attachments are attached to the main body arm to perform operations such as excavation and crushing. If the standard arm length of the construction machine is short in operation, the arm lengthening mechanism is extended to the main body arm to extend the arm length.
【０００３】図３に、従来のアーム延長機構の側面図を
示す。このアーム延長機構は、前方へ移動した操作アー
ム５に代えて補助アーム６を用い、延長アーム３、延長
ロッド４、操作アーム５(延長前の操作アームと同一又
は相違する場合がある)及び補助アーム６によってリン
ク機構を構成する。バケットは、延長ロッド４と操作ア
ーム５とを結ぶ連結上回動軸７に軸着したバケットアー
ム15と、延長アーム３の先部に位置するバケット基部軸
11とにそれぞれ軸着する。FIG. 3 shows a side view of a conventional arm extension mechanism. This arm extension mechanism uses an auxiliary arm 6 instead of the operation arm 5 moved forward, and includes an extension arm 3, an extension rod 4, an operation arm 5 (which may be the same as or different from the operation arm before extension) and an auxiliary arm. The arm 6 constitutes a link mechanism. The bucket includes a bucket arm 15 pivotally connected to a pivot shaft 7 for connecting the extension rod 4 and the operation arm 5, and a bucket base shaft located at the tip of the extension arm 3.
Attached to 11 and 11 respectively.
【０００４】[0004]
【発明が解決しようとする課題】従来のアーム延長機構
は、補助アーム６に延長前の操作アームと同じ揺動運動
をさせ、リンク機構で前記揺動運動を前方の操作アーム
５へ伝達するため、補助アーム６を延長前の操作アーム
５と同じ位置関係で取り付けなければならないとされて
いた。すなわち、補助アーム６の連結下回動軸２は本体
アーム14に延長アーム３を連結する後接続固定軸13と同
軸に、また補助アーム６の連結上回動軸８は本体ロッド
９に延長ロッド４を連結する接続回動軸10と同軸に、そ
れぞれ軸着していた(図３参照)。これから分かるよう
に、後接続固定軸及び接続回動軸にはそれぞれ３種類の
部材が同軸に並ぶため、軸構造が複雑となり、とりわけ
アーム延長機構の取付作業に手間と労力を課する問題を
引き起こしていた。そこで、アーム延長機構の取付作業
を簡略化するため、アーム延長機構の構成について見直
すこととした。The conventional arm extending mechanism is to make the auxiliary arm 6 perform the same oscillating motion as the operating arm before extension, and to transmit the oscillating motion to the operating arm 5 in front by the link mechanism. , The auxiliary arm 6 must be attached in the same positional relationship as the operation arm 5 before extension. That is, the lower pivot shaft 2 of the auxiliary arm 6 is coaxial with the fixed shaft 13 after connecting the extension arm 3 to the main body arm 14, and the upper pivot shaft 8 of the auxiliary arm 6 is connected to the main rod 9 by the extension rod. 4 were coaxially connected to a connection rotation shaft 10 for connecting them (see FIG. 3). As can be seen, since the three types of members are coaxially arranged on the rear connection fixed shaft and the connection rotation shaft, respectively, the shaft structure becomes complicated, which causes a problem that a labor and labor are particularly required for the mounting operation of the arm extension mechanism. I was Therefore, in order to simplify the work of attaching the arm extension mechanism, the configuration of the arm extension mechanism was reviewed.
【０００５】[0005]
【課題を解決するための手段】検討の結果開発したもの
が、本体アームに接続した延長アームと、本体ロッドに
接続した延長ロッドと、この延長アーム及び延長ロッド
を連結する操作アーム及び補助アームとによりリンク機
構を構成するアーム延長機構において、(1)延長ロッド
と本体ロッドとを接続する接続回動軸以外に補助アーム
の連結上回動軸をこの延長ロッド上に設ける、又は(2)
延長アームと本体アームとを接続する後接続固定軸以外
に補助アームの連結下回動軸をこの延長アーム上に設け
る建設機械のアーム延長機構である。アーム延長機構を
構成するリンク機構を平行リンクとすれば、補助アーム
の位置が前後しても、リンク機構全体の動きに変更を来
さない。そこで、アーム延長機構の取付作業を簡略化で
きるように、接続回動軸から補助アームの連結上回動軸
((1)の構成)又は後接続固定軸から補助アームの連結下
回動軸((2)の構成)を分離したのである。SUMMARY OF THE INVENTION As a result of the study, an extension arm connected to a main body arm, an extension rod connected to a main body rod, an operation arm and an auxiliary arm for connecting the extension arm and the extension rod are provided. In the arm extension mechanism that constitutes the link mechanism, (1) In addition to the connection rotation axis that connects the extension rod and the main body rod, a connection rotation axis of the auxiliary arm is provided on this extension rod, or (2)
This is an arm extension mechanism of a construction machine in which a lower pivot axis for connection of an auxiliary arm is provided on the extension arm in addition to a fixed connection axis for connecting the extension arm and the main body arm. If the link mechanism that constitutes the arm extension mechanism is a parallel link, the movement of the entire link mechanism does not change even if the position of the auxiliary arm moves back and forth. Therefore, in order to simplify the mounting operation of the arm extension mechanism, the connecting pivot shaft is connected to the pivot shaft of the auxiliary arm.
The configuration ((1)) or the lower pivot shaft (configuration (2)) of connecting the auxiliary arm is separated from the rear connection fixed shaft.
【０００６】(1)のアーム延長機構は、延長ロッドと本
体ロッドとを接続する接続回動軸から補助アームの連結
上回動軸を分離している。これにより、接続回動軸は延
長ロッドと本体ロッドとの接続のみを考慮した軸構造で
よくなり、軸構造の簡略化を図ることができる。また、
従来同軸としていた接続回動軸から補助アームの連結上
回動軸を分離することで、補助アームを延長ロッドから
切り離すことなく、本体アームと延長アームとを接続で
きるようになる。こうして、アーム延長機構の取付作業
が簡略化できる。[0006] In the arm extension mechanism of (1), the rotation axis on the connection of the auxiliary arm is separated from the connection rotation axis connecting the extension rod and the main body rod. Accordingly, the connection rotation shaft may have a shaft structure considering only the connection between the extension rod and the main body rod, and the shaft structure can be simplified. Also,
By separating the rotation axis on connection of the auxiliary arm from the connection rotation axis which has conventionally been coaxial, the main body arm and the extension arm can be connected without separating the auxiliary arm from the extension rod. In this way, the work of attaching the arm extension mechanism can be simplified.
【０００７】(2)のアーム延長機構は、延長アームと本
体アームとを接続する後接続固定軸から補助アームの連
結下回動軸を分離している。これにより、後接続固定軸
は延長アームと本体アームとの接続のみを考慮した軸構
造でよくなり、軸構造の簡略化を図ることができる。改
めて定める補助アームの連結下回動軸は、延長アーム上
任意でよく、例えば前連結固定軸へ連結した回動軸を移
すだけでもよい。この場合、後接続固定軸から先接続固
定軸への連結下回動軸の移動は、そのまま上記(1)のア
ーム延長機構の構成を実現する。更に、前後接続固定軸
のいずれでもない位置へ連結下回動軸を移動させると、
補助アームを延長アームから切り離すことなく、本体ア
ームと延長アームとを接続できるようになる。In the arm extension mechanism (2), the lower pivot axis of the auxiliary arm is separated from the rear connection fixed axis connecting the extension arm and the main body arm. This allows the rear connection fixed shaft to have a shaft structure that takes into account only the connection between the extension arm and the main body arm, and can simplify the shaft structure. The newly-defined lower pivot axis of the auxiliary arm may be arbitrary on the extension arm. For example, the pivot axis connected to the front coupling fixed axis may be simply shifted. In this case, the movement of the lower connecting rotary shaft from the rear connection fixed shaft to the front connection fixed shaft directly realizes the configuration of the arm extension mechanism of the above (1). Furthermore, when the connecting lower rotating shaft is moved to a position other than any of the front and rear connection fixed shafts,
The main arm and the extension arm can be connected without separating the auxiliary arm from the extension arm.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施形態につい
て、図を参照しながら説明する。図１は前接続固定軸１
へ連結下回動軸２を移動させた本発明のアーム延長機構
の側面図、図２は更に前接続固定軸１よりも前へ連結下
回動軸２を移動させた別例のアーム延長機構の側面図で
ある。Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows the front fixed shaft 1.
FIG. 2 is a side view of the arm extension mechanism of the present invention in which the lower connection pivot shaft 2 is moved. FIG. 2 is another example of the arm extension mechanism in which the lower connection rotation shaft 2 is further moved forward than the front connection fixed shaft 1. FIG.
【０００９】図１に示すアーム延長機構は、延長アーム
３及び延長ロッド４を、前後に配した操作アーム５及び
補助アーム６で連結して平行リンクを構成する。延長ロ
ッド４には、先部に操作アーム５の連結上回動軸７、基
部に補助アーム６の連結上回動軸８と本体ロッド９との
接続回動軸10を設けている。延長アーム３は、先部にバ
ケット基部軸11と操作アーム５の連結下回動軸12、基部
に前後接続固定軸１,13を設け、補助アーム６の連結下
回動軸２は前連結固定軸１に軸着している。In the arm extension mechanism shown in FIG. 1, an extension arm 3 and an extension rod 4 are connected by an operation arm 5 and an auxiliary arm 6 arranged in front and rear to form a parallel link. The extension rod 4 is provided at its tip with a pivot shaft 7 for connection of the operation arm 5 and at its base a pivot shaft 10 for connection between the pivot shaft 8 for connection of the auxiliary arm 6 and the main body rod 9. The extension arm 3 has a lower pivot shaft 12 for connecting the bucket base shaft 11 and the operation arm 5 at the front end, and a front and rear connection fixed shafts 1 and 13 at the base. It is attached to the shaft 1.
【００１０】本例のアーム延長機構の取付作業では、本
体アーム14からバケットを取り外すのは従来と同様であ
る。バケットアーム15及び操作アーム５は、延長アーム
３へと付け替えて使用してもよいが、補助アーム６と操
作アーム５とが同一の揺動運動をする必要から、アーム
延長機構が構成するリンク機構を平行リンクとするため
に、操作アームは別途用意したものを用いる場合もあ
る。こうしてバケット等を取り外した本体アーム14に対
し、まず後接続固定軸13によって延長アーム３を接続す
る。In the mounting operation of the arm extension mechanism of this embodiment, removing the bucket from the main body arm 14 is the same as the conventional one. The bucket arm 15 and the operation arm 5 may be replaced with the extension arm 3 and used. However, since the auxiliary arm 6 and the operation arm 5 need to perform the same swinging motion, the link mechanism formed by the arm extension mechanism is used. In some cases, a separately prepared operation arm may be used in order to make a parallel link. First, the extension arm 3 is connected to the main body arm 14 from which the bucket and the like have been removed by the rear connection fixed shaft 13.
【００１１】次いで延長ロッド４と本体ロッド９とを接
続する。このとき、従来と違って補助アーム６の連結上
回動軸８は接続回動軸10より前方に設けられているた
め、わざわざ補助アーム６を取り外す必要がなく、延長
ロッド４と本体ロッド９との接続は容易に終了する。後
は、補助アーム６の連結下回動軸２を同軸で前連結固定
軸１に軸着し、延長アーム３及び延長ロッド４をそれぞ
れの先部における連結上下回動軸７,12で操作アーム５
を軸着し、連結上回動軸７にバケットアーム15を軸着す
れば取付作業が完了する。補助アーム６は、後接続固定
軸13に軸着したのと同じ揺動運動をするように、そのま
ま前方へ移動させただけなので、リンク機構全体の運動
は従来のアーム延長機構と同じであり、当然操作アーム
５の揺動運動も従来のアーム延長機構と同一となる。Next, the extension rod 4 and the main body rod 9 are connected. At this time, unlike the related art, since the pivot shaft 8 on the connection of the auxiliary arm 6 is provided forward of the connection pivot shaft 10, there is no need to remove the auxiliary arm 6 and the extension rod 4 and the main body rod 9 are connected. Connection is easily terminated. Thereafter, the lower pivot shaft 2 of the auxiliary arm 6 is coaxially mounted on the front coupling fixed shaft 1 and the extension arm 3 and the extension rod 4 are connected to the upper and lower pivot shafts 7 and 12 at the front ends thereof. 5
When the bucket arm 15 is pivotally mounted on the pivot shaft 7 on the connection, the mounting operation is completed. Since the auxiliary arm 6 is simply moved forward so as to make the same swinging motion as being attached to the rear connection fixed shaft 13, the motion of the entire link mechanism is the same as that of the conventional arm extension mechanism. Naturally, the swinging motion of the operation arm 5 is the same as that of the conventional arm extension mechanism.
【００１２】図１に示すアーム延長機構の利点は、アー
ム延長機構の取付作業において、補助アーム６の連結上
回動軸８を延長アーム３から分離する必要がない点にあ
る。同様に、補助アーム６の連結下回動軸２を前後接続
固定軸１,13のいずれでもない位置で延長アーム３に軸
着すれば、もはや補助アーム６は延長ロッド４及び延長
アーム３から分離することなくアーム延長機構の取付作
業を実施できるようになる。この趣旨で構成したもの
が、図２に示すアーム延長機構である。アーム延長機構
は、予め延長ロッド４と延長アーム３とが補助アーム６
で連結された状態で供給され、しかも補助アーム６を外
すことなく取付作業を実施できるため、図１に示したア
ーム延長機構よりも、更に取付作業が簡略化できる。An advantage of the arm extension mechanism shown in FIG. 1 is that it is not necessary to separate the rotation shaft 8 from the extension arm 3 in connection with the auxiliary arm 6 in the mounting operation of the arm extension mechanism. Similarly, if the connecting lower rotating shaft 2 of the auxiliary arm 6 is axially attached to the extension arm 3 at a position other than the front and rear connection fixed shafts 1 and 13, the auxiliary arm 6 is no longer separated from the extension rod 4 and the extension arm 3. The mounting operation of the arm extension mechanism can be performed without performing. The arm extension mechanism shown in FIG. 2 is configured for this purpose. The arm extension mechanism is configured such that the extension rod 4 and the extension arm 3 are connected to the auxiliary arm 6 in advance.
In addition, since the mounting operation can be performed without removing the auxiliary arm 6, the mounting operation can be further simplified than the arm extension mechanism shown in FIG.
【００１３】[0013]
【発明の効果】本発明は、アーム延長機構が構成するリ
ンク機構の特性を活かし、操作アームの揺動運動に支障
を来さない態様で、補助アームの配置を変更したもので
ある。この結果、従来は同軸となっていた補助アームの
連結上回動軸と接続回動軸、又は同補助アームの連結下
回動軸と前後接続固定軸とを分離でき、アーム延長機構
の取付作業を簡略化できるようになり、取付作業時間や
労力、手間を軽減できるようになった。According to the present invention, the arrangement of the auxiliary arm is changed so as not to hinder the swinging movement of the operation arm by utilizing the characteristics of the link mechanism formed by the arm extension mechanism. As a result, the connecting upper rotating shaft and the connecting rotating shaft of the auxiliary arm, or the connecting lower rotating shaft of the auxiliary arm and the front and rear connecting fixed shaft, which were conventionally coaxial, can be separated, and the mounting operation of the arm extension mechanism can be performed. Can be simplified, and installation time, labor, and labor can be reduced.
【図１】前接続固定軸へ連結下回動軸を移動させた本発
明のアーム延長機構の側面図である。FIG. 1 is a side view of an arm extension mechanism of the present invention in which a lower connecting rotary shaft is moved to a front connection fixed shaft.
【図２】前接続固定軸よりも前へ連結下回動軸を移動さ
せた別例のアーム延長機構の側面図である。FIG. 2 is a side view of another example of an arm extension mechanism in which a connection lower rotation shaft is moved forward of a front connection fixed shaft.
【図３】後接続固定軸へ連結下回動軸を軸着した本従来
のアーム延長機構の側面図である。FIG. 3 is a side view of the conventional arm extension mechanism in which a lower pivot shaft is connected to a rear connection fixed shaft.
１ 前接続固定軸 ２ 補助アームの連結下回動軸 ３ 延長アーム ４ 延長ロッド ５ 操作アーム ６ 補助アーム ７ 操作アームの連結上回動軸 ８ 補助アームの連結上回動軸 ９ 本体ロッド 10 接続回動軸 11 バケット基部軸 12 操作アームの連結下回動軸 13 後接続固定軸 14 本体アーム 15 バケットアーム DESCRIPTION OF SYMBOLS 1 Front connection fixed shaft 2 Auxiliary arm connection lower rotation shaft 3 Extension arm 4 Extension rod 5 Operation arm 6 Auxiliary arm 7 Operation arm connection upper rotation shaft 9 Auxiliary arm connection upper rotation shaft 9 Body rod 10 Connection times Active shaft 11 Bucket base shaft 12 Operation arm connection lower rotation shaft 13 Rear connection fixed shaft 14 Main body arm 15 Bucket arm
Claims (2)
体ロッドに接続した延長ロッドと、該延長アーム及び延
長ロッドを連結する操作アーム及び補助アームとにより
リンク機構を構成するアーム延長機構において、延長ロ
ッドと本体ロッドとを接続する接続回動軸以外に補助ア
ームの連結上回動軸を該延長ロッド上に設けたことを特
徴とする建設機械のアーム延長機構。1. An arm extension mechanism comprising a link mechanism comprising an extension arm connected to a main body arm, an extension rod connected to a main body rod, and an operation arm and an auxiliary arm connecting the extension arm and the extension rod. An arm extension mechanism for a construction machine, wherein a rotation axis for connecting an auxiliary arm is provided on the extension rod in addition to a connection rotation axis for connecting the rod and the main body rod.
体ロッドに接続した延長ロッドと、該延長アーム及び延
長ロッドを連結する操作アーム及び補助アームとにより
リンク機構を構成するアーム延長機構において、延長ア
ームと本体アームとを接続する後接続固定軸以外に補助
アームの連結下回動軸を該延長アーム上に設けたことを
特徴とする建設機械のアーム延長機構。2. An arm extension mechanism comprising a link mechanism comprising an extension arm connected to a main body arm, an extension rod connected to the main body rod, and an operation arm and an auxiliary arm connecting the extension arm and the extension rod. An arm extension mechanism for a construction machine, wherein a lower pivot shaft for connecting an auxiliary arm is provided on the extension arm in addition to a fixed rear connection shaft for connecting the arm and the main body arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077576A JP3137952B2 (en) | 1999-03-23 | 1999-03-23 | Arm extension mechanism for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077576A JP3137952B2 (en) | 1999-03-23 | 1999-03-23 | Arm extension mechanism for construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000273894A JP2000273894A (en) | 2000-10-03 |
| JP3137952B2 true JP3137952B2 (en) | 2001-02-26 |
Family
ID=13637836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11077576A Expired - Fee Related JP3137952B2 (en) | 1999-03-23 | 1999-03-23 | Arm extension mechanism for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3137952B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5346553B2 (en) * | 2008-10-31 | 2013-11-20 | 株式会社クボタ | Front loader and extension used for front loader |
| CN103158010A (en) * | 2013-03-04 | 2013-06-19 | 美卡诺元器件(上海)有限公司 | Motor-driven lifting cantilever system |
-
1999
- 1999-03-23 JP JP11077576A patent/JP3137952B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000273894A (en) | 2000-10-03 |
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