JP4519715B2 - Shaft structure of work device operating part - Google Patents

Shaft structure of work device operating part Download PDF

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Publication number
JP4519715B2
JP4519715B2 JP2005155428A JP2005155428A JP4519715B2 JP 4519715 B2 JP4519715 B2 JP 4519715B2 JP 2005155428 A JP2005155428 A JP 2005155428A JP 2005155428 A JP2005155428 A JP 2005155428A JP 4519715 B2 JP4519715 B2 JP 4519715B2
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Japan
Prior art keywords
shaft
guide
device operating
boom
pipe guide
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JP2006328848A (en
Inventor
明利 西川
智己 左近充
康介 柳堂
茂 大日方
千鶴 五十嵐
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Caterpillar Japan Ltd
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Caterpillar Japan Ltd
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Description

この発明は、作業機械の作業装置動作部の軸構造に関する。   The present invention relates to a shaft structure of a working device operating portion of a work machine.

作業機械の作業装置(例えばフロント作業部)の動作部(例えばブーム、アーム、それらのシリンダ等)の側面にはホースや配管が配置されるが、動作部の回動等の動作時にホースが撓んで外部に張り出すと、外部の物に干渉して破損するおそれがあるので、それを阻止する配管ガイドが配置される。この配管ガイドの従来例として、実開平6−8458号や特開2000−38740に開示される構造がある。実開平6−8458号は図4に示される構造であり、また特開2000−38740は図5に示される構造であり、いずれの構造も、撓んだホース6の接触範囲がもっとも小さくなる、ブーム軸(軸ピン20)近傍に配管ガイド21が配置されるものとなっている。これらの構造によれば、動作部が回動等してホース6が動いても、配管ガイド21との接触が最小限に抑えられ、接触によるホース6損傷のおそれを最大限に防げるものとなっている。 Although hoses and pipes are arranged on the side surfaces of the operating parts (for example, booms, arms, and cylinders thereof) of the working device (for example, the front working part) of the work machine, the hoses are bent when the operating part is rotated. If it protrudes to the outside, there is a risk that it will be damaged by interference with an external object, so a piping guide is arranged to prevent it. As conventional examples of this pipe guide, there are structures disclosed in Japanese Utility Model Laid-Open No. 6-8458 and Japanese Patent Laid-Open No. 2000-38740. Japanese Utility Model Laid-Open No. 6-8458 has the structure shown in FIG. 4 , and Japanese Patent Application Laid-Open No. 2000-38740 has the structure shown in FIG. 5. In any structure, the contact range of the bent hose 6 is the smallest. A piping guide 21 is disposed in the vicinity of the boom shaft (shaft pin 20). According to these structures, even if the hose 6 moves due to rotation of the operating part, contact with the pipe guide 21 is minimized, and the risk of damage to the hose 6 due to contact can be prevented to the maximum. ing.

実開平6−8458号(図2)ACT 6-8458 (Fig. 2) 特開2000−38740(図4)JP 2000-38740 (FIG. 4)

ところで、ブーム軸などの作業装置の動作部の軸には、抜け及びガタ防止のためのピン止めが備えられている。図6は従来のピン止め22の構造(ブームシリンダ2の軸ピン20に適用された例)を示し、図示のように、ピン止め22は単体の構造となっていた。 By the way, the axis | shaft of the operation | movement part of work apparatuses, such as a boom axis | shaft, is equipped with the pin stop for a drop and backlash prevention. FIG. 6 shows the structure of a conventional pinning 22 (an example applied to the shaft pin 20 of the boom cylinder 2). As shown in the figure, the pinning 22 has a single structure.

一方、近年、作業機械にあっては、コスト削減の見地から部品点数削減の要請が強くなってきている。   On the other hand, in recent years, there has been a strong demand for work machines to reduce the number of parts from the viewpoint of cost reduction.

この発明は、従来技術の以上のような背景に鑑み創案されたもので、作業装置の動作部近傍に配置される部材を一体化させることで、作業機械の部品点数を削減させることのできる構造を提供しようとするものである。   The present invention was devised in view of the background as described above in the prior art, and is a structure that can reduce the number of parts of a work machine by integrating members arranged in the vicinity of an operation part of a work device. Is to provide.

本発明者らは、部品点数削減の見知から、一体化でき得る部材を検討した結果、上述のように、特性の優れる配管ガイドが作業機動作部の軸近傍に配置されることに着目し、その部材とピン止めの構造を種々検討した結果、本発明を創案したものである。   As a result of studying members that can be integrated from the knowledge of reducing the number of parts, the present inventors paid attention to the fact that, as described above, a piping guide having excellent characteristics is disposed in the vicinity of the axis of the work machine operating unit. As a result of various studies on the structure of the member and the pinning, the present invention has been invented.

すなわち、この発明に係る作業装置動作部の軸構造は、作業装置動作部の軸の軸支部に、配管ガイドを固着させる軸構造であって、前記配管ガイドを固着させた際、該配管ガイドと前記軸とが相互に係合するように、前記軸に係合部を、前記配管ガイドに被係合部を各々形成させたことを特徴とする。 That is, the shaft structure of the working device operating portion according to the present invention is a shaft structure in which the piping guide is fixed to the shaft support portion of the shaft of the working device operating portion, and when the piping guide is fixed, An engaging portion is formed on the shaft and an engaged portion is formed on the pipe guide so that the shaft and the shaft are engaged with each other.

ここで、前記作業装置動作部とは、作業機械における作業装置(例えばフロント構造体)のうち、動作する手段部分、ブーム、アーム、それらのシリンダ等をいう。   Here, the working device operating section refers to operating means, a boom, an arm, a cylinder thereof, and the like among working devices (for example, a front structure) in a working machine.

また、本願にいう係合部を形成させるとは、軸と配管ガイドとが構造的に係わり合って軸本体の回転動作が遮られるような形状に形成させることをいい、例えば、部材の外形部分に加工を施して所定形状(後述する実施形態例の切り欠き、あるいは嵌合溝スリットや孔などを形成させる形状)に形成させることをいう。そして、軸には係合部を、配管ガイドには被係合部を各々形成させる。 In addition, the formation of the engaging portion referred to in the present application means that the shaft and the pipe guide are structurally engaged so that the rotation operation of the shaft main body is blocked. For example, the outer portion of the member Is formed into a predetermined shape (a shape for forming a notch or a fitting groove , a slit, a hole, or the like in an embodiment described later). Then, the axis of the engaging portion, the pipe guide Ru is formed respectively engaged portion.

本発明では、軸支部に配管ガイドが固着されると、軸と配管ガイドとが各々に形成された係合部と被係合部を介して係合する。この係合により、軸の回転動作が遮られる。すなわち、配管ガイドがピン止めの機能を有することになる。 In the present invention, when the pipe guide is fixed to the shaft support portion , the shaft and the pipe guide engage with each other through the engaging portion and the engaged portion . This engagement blocks the rotational movement of the shaft. That is, the piping guide has a pinning function.

以上説明したように、この発明によれば、配管ガイドにピン止め機能を備えさせることができ、単独のピン止め手段が不要となるので、部品点数の削減が達成できる。もちろん、配管ガイドは軸の近傍に配置されるので、従来どおり、撓むホースとの接触を最小限に抑え、ホースの損傷を最大限に防げる効果が維持できるものとなっている。   As described above, according to the present invention, the piping guide can be provided with a pinning function, and no single pinning means is required, so that the number of parts can be reduced. Of course, since the piping guide is disposed in the vicinity of the shaft, the effect of minimizing contact with the bending hose and preventing damage to the hose can be maintained as usual.

本発明の具体的実施形態の一例を図面に基づき説明する。なお、以下の形態例は本発明を具現化した一例に過ぎず、本発明がそれに限定されるものではないことは当然である。   An example of a specific embodiment of the present invention will be described with reference to the drawings. It should be noted that the following embodiment is merely an example embodying the present invention, and the present invention is naturally not limited thereto.

図1は実施形態例を示し、それは作業機械としての油圧ショベルのブーム基端部を示している。図中、1はブーム、2はブームシリンダ、3はブームシリンダブラケット(以下単にシリンダブラケットという)、4は機体本体、5はブームシリンダの軸ピン、6は油圧ホース、7は配管ガイドである。 Figure 1 shows an embodiment example, which shows the boom base end portion of a hydraulic excavator as the working machine. In the figure, 1 is a boom, 2 is a boom cylinder, 3 is a boom cylinder bracket (hereinafter simply referred to as a cylinder bracket), 4 is a fuselage body, 5 is a boom cylinder shaft pin, 6 is a hydraulic hose, and 7 is a piping guide.

図示のように、本形態例は、ブームシリンダ2を支持する軸ピン5の近傍に配管ガイド7が配置される例である。もちろん、他の動作部であるブーム1、アーム、アームシリンダ、バケット、バケットシリンダ(ブーム以外は図示なし)の各軸近傍に配管ガイドが配置される形態であっても良い。   As shown in the figure, the present embodiment is an example in which a pipe guide 7 is disposed in the vicinity of the shaft pin 5 that supports the boom cylinder 2. Of course, a pipe guide may be arranged in the vicinity of each axis of the boom 1, the arm, the arm cylinder, the bucket, and the bucket cylinder (not shown except for the boom) which are other operation parts.

図2に示すように、本形態例の配管ガイド7は、縦長状の板状部材よりなり、幅方向の一端側にボルト孔10が2カ所形成されるとともに、他端側にホース6貫通部となるコ字状留め具11が外方に突出して設けられている。該留め具11側の端部12が後述する軸ピン5の切り欠き(係合部20)に係合される部分(被係合部)となる。   As shown in FIG. 2, the pipe guide 7 of this embodiment is made of a vertically long plate-like member, and has two bolt holes 10 formed on one end side in the width direction, and a hose 6 penetrating portion on the other end side. A U-shaped fastener 11 that protrudes outward is provided. The end portion 12 on the side of the fastener 11 becomes a portion (engaged portion) engaged with a notch (engagement portion 20) of a shaft pin 5 described later.

図3に示すように、本形態例の軸ピン5は、少なくともシリンダブラケット3の幅から両端が突出する長さのものを用い、その両端面のいずれにも、端面のほぼ半分を切り欠いて、側面視で半円状の係合部20を形成させている。   As shown in FIG. 3, the shaft pin 5 of the present embodiment uses a shaft pin having a length that protrudes at least from the width of the cylinder bracket 3, and cuts almost half of the end surface on either end surface. The semicircular engaging portion 20 is formed in a side view.

したがって、軸ピン5の両端部がシリンダブラケット3両端から突出された状態で、前記配管ガイド7の被係合部となる端部12を、軸ピン5の前記係合部20に当接させつつ、その一端側を、ボルト孔10からボルト13でシリンダブラケット3に締着させると、図3に示すように、軸ピン5はその両端が、係合された各配管ガイド7の端部12で挟まれて、シリンダブラケット3にしっかり固定されることになる。すなわち、配管ガイド7が軸ピン5のピン止めとしても機能している。   Therefore, with both end portions of the shaft pin 5 protruding from both ends of the cylinder bracket 3, the end portion 12 that is the engaged portion of the pipe guide 7 is brought into contact with the engaging portion 20 of the shaft pin 5. When one end side of the shaft pin 5 is fastened to the cylinder bracket 3 with the bolt 13 from the bolt hole 10, the shaft pin 5 is connected to the end portion 12 of each engaged pipe guide 7 as shown in FIG. It is sandwiched and firmly fixed to the cylinder bracket 3. That is, the pipe guide 7 also functions as a pin for the shaft pin 5.

また、本形態例の配管ガイド7は、留め具11の突出位置が被係合部側に形成されているので、配管ガイド7の固定状態では、図3に示すように、留め具11がピン軸5上に位置することになり、ブーム1に連動してブームシリンダ2が回動したときにホース6が動いても、それと配管ガイド7との接触が最小限に抑えられ、接触によるホース6損傷のおそれを最大限に防げるものとなっている。   Moreover, since the protruding position of the fastener 11 is formed on the engaged portion side in the pipe guide 7 of this embodiment, the fastener 11 is pinned in the fixed state of the pipe guide 7 as shown in FIG. Even if the hose 6 moves when the boom cylinder 2 rotates in conjunction with the boom 1, the contact between the hose 6 and the piping guide 7 is minimized, and the hose 6 by contact The risk of damage is prevented to the maximum.

この発明は、作業装置動作部にホースが沿って配置される作業機械に適用可能である。   The present invention can be applied to a work machine in which a hose is disposed along a working device operating unit.

本発明の実施形態例の説明図であり、ブーム基端部の側面図である。Is an illustration of an embodiment of the present invention, is a side view of the boom base end portion. 形態例の配管ガイドの説明図であり、(a)は側面図、(b)は平面図である。It is explanatory drawing of the piping guide of this form example, (a) is a side view, (b) is a top view. 形態例の詳細図であり、(a)は軸ピン近傍の部分断面図、(b)は(a)中の軸ピン係合部を説明するための端面図である。It is a detailed view of this embodiment, (a) is a partial cross-sectional view in the vicinity of the shaft pin, (b) is an end view for explaining the shaft pin engaging portion in (a). 実開平6−8458号に開示される従来の配管ガイドの説明図である。It is explanatory drawing of the conventional piping guide disclosed by Japanese Utility Model Laid-Open No. 6-8458. 特開2000−38740に開示される従来の配管ガイドの説明図である。It is explanatory drawing of the conventional piping guide disclosed by Unexamined-Japanese-Patent No. 2000-38740. ブームシリンダの軸ピンに適用された従来のピン止めの構造例を示し、(a)は一の構造例の部分断面図、(b)は他の構造例の部分断面図である。An example of a conventional pinning structure applied to a shaft pin of a boom cylinder is shown, (a) is a partial sectional view of one structural example, and (b) is a partial sectional view of another structural example.

符号の説明Explanation of symbols

1 ブーム
2 ブームシリンダ
3 ブームシリンダブラケット
4 機体本体
5 軸ピン
6 油圧ホース
7,7' 配管ガイド
1 Boom
2 Boom cylinder
3 Boom cylinder bracket
4 Airframe body
5-axis pin
6 Hydraulic hose
7,7 'piping guide

Claims (1)

作業装置動作部の軸の軸支部に、配管ガイドを固着させる軸構造であって、前記配管ガイドを固着させた際、該配管ガイドと前記軸とが相互に係合するように、前記軸に係合部を、前記配管ガイドに被係合部を各々形成させたことを特徴とする作業装置動作部の軸構造。 A shaft structure in which a pipe guide is fixed to a shaft support portion of a shaft of a work device operating unit, and when the pipe guide is fixed, the pipe guide and the shaft are engaged with each other so that the shaft is engaged with each other. The shaft structure of the working device operating portion , wherein the engaged portions are formed in the pipe guides as engaged portions, respectively .
JP2005155428A 2005-05-27 2005-05-27 Shaft structure of work device operating part Expired - Fee Related JP4519715B2 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5019516B2 (en) * 2007-02-27 2012-09-05 キャタピラー エス エー アール エル Hydraulic piping arrangement structure in construction machinery
CN102046890B (en) * 2008-05-29 2013-01-30 克拉克设备公司 Quick release hose guide
JP6017362B2 (en) * 2013-03-29 2016-10-26 株式会社クボタ Working machine hose guide structure
JP5996498B2 (en) * 2013-08-23 2016-09-21 日立建機株式会社 Excavator working equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001329559A (en) * 2000-05-25 2001-11-30 Yanmar Diesel Engine Co Ltd Work machine piping structure of excavation work vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744149Y2 (en) * 1978-01-12 1982-09-29
JP2997399B2 (en) * 1995-05-22 2000-01-11 株式会社クボタ Support structure of boom swing device in work equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001329559A (en) * 2000-05-25 2001-11-30 Yanmar Diesel Engine Co Ltd Work machine piping structure of excavation work vehicle

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