JPH0510045Y2 - - Google Patents
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- Publication number
- JPH0510045Y2 JPH0510045Y2 JP18450087U JP18450087U JPH0510045Y2 JP H0510045 Y2 JPH0510045 Y2 JP H0510045Y2 JP 18450087 U JP18450087 U JP 18450087U JP 18450087 U JP18450087 U JP 18450087U JP H0510045 Y2 JPH0510045 Y2 JP H0510045Y2
- Authority
- JP
- Japan
- Prior art keywords
- piping
- hydraulic actuator
- flow
- flow rate
- large flow
- 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
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- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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- Shovels (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、油圧シヨベルのフロントアタツチ
メントに沿つて取付けた作業工具用配管装置に関
する。[Detailed Description of the Invention] Industrial Application Field This invention relates to a piping device for a working tool installed along the front attachment of a hydraulic excavator.
従来の技術
第５図は、従来技術作業工具用配管を取付けた
油圧シヨベルの斜視図である。図において、１は
油圧シヨベル、２は油圧シヨベル１のフロント部
に取付けられたフロントアタツチメント、３はフ
ロントアタツチメント２のブーム、４はアーム、
５は作業工具である傾転バケツト、６はバケツト
傾転用シリンダ、７はフロントアタツチメント２
に沿つて予備的に取付けられた大流量用配管、８
はバケツト傾転用シリンダ６に対して配設された
小流量用配管である。Prior Art FIG. 5 is a perspective view of a hydraulic excavator equipped with a prior art work tool piping. In the figure, 1 is a hydraulic excavator, 2 is a front attachment attached to the front part of the hydraulic excavator 1, 3 is a boom of the front attachment 2, 4 is an arm,
5 is a tilting bucket which is a working tool, 6 is a cylinder for tilting the bucket, and 7 is a front attachment 2.
Large flow piping preliminarily installed along
is a small flow rate piping provided to the bucket tilting cylinder 6.
従来技術作業工具用配管は、第５図のように大
流量用配管７と、小流量用配管８とが、フロント
アタツチメント２に沿つて並列的に取付けられて
いる。第５図においては、作業工具として傾転バ
ケツト５を装着しているので、大流量用配管７は
使用していない。そのために、大流量用配管７先
端は、盲プラグ９により油路を閉鎖している。し
かし、バケツト傾転用シリンダ６には、傾転バケ
ツト５を傾動させるために、比較的流量の小なる
配管８が接続されている。 In the prior art working tool piping, as shown in FIG. 5, a large flow pipe 7 and a small flow pipe 8 are installed in parallel along the front attachment 2. In FIG. 5, since the tilting bucket 5 is installed as a working tool, the large flow pipe 7 is not used. For this purpose, the oil passage is closed off by a blind plug 9 at the tip of the large flow rate pipe 7. However, in order to tilt the tilting bucket cart 5, a piping 8 with a relatively small flow rate is connected to the bucket tilting cylinder 6.
なお、大流量用配管を使用する場合は、作業工
具を取付け換えして、たとえば破枠機など作動用
流量の大なる作業工具を装着したときである。一
方、比較的小流量の配管８を使用する場合は、傾
転バケツト５に換えて、たとえば回転式クラムシ
エルを取付けたときに、その回転モータに圧油を
供給するために用いる。 In addition, when using piping for a large flow rate, it is when the working tool is replaced and a working tool with a large operating flow rate, such as a frame breaking machine, is installed. On the other hand, when the piping 8 with a relatively small flow rate is used, it is used instead of the tilting bucket 5 to supply pressure oil to a rotary motor when a rotary clam shell is attached, for example.
この考案の解決すべき問題点
従来技術作業工具用配管は、大流量用配管と小
流量用配管とがフロントアタツチメントに沿つて
並列的に取付けられている。そして、フロントア
タツチメント先端部に取付換えする作業工具の種
類によつて、大流量用配管と小流量用配管の内い
ずれか一方を使用するようにしている。したがつ
て、上記両配管はいずれか一方だけを使用するに
もかかわらず、両配管をフロントアタツチメント
に沿つて並列的に取付けているので製作費は高か
つた。また、上記両配管はそれぞれ別個に、供給
側油路および戻り側油路として各々一対の状態で
取付けられているので、それらの重量は大となり
フロントアタツチメントおよび作業工具を作動操
作するときにエネルギーロスをもたらしていた。Problems to be solved by this invention In the prior art working tool piping, a large flow pipe and a small flow pipe are installed in parallel along the front attachment. Depending on the type of power tool to be attached to the front end of the front attachment, one of the large flow rate piping and the small flow rate piping is used. Therefore, even though only one of the above pipings is used, both pipings are installed in parallel along the front attachment, resulting in high manufacturing costs. In addition, since both of the above pipings are installed separately as a pair as a supply side oil path and a return side oil path, their weight is large and it is difficult to operate the front attachment and power tools. This was causing energy loss.
この考案は上記の問題点を解決し、大流量用配
管、小流量用配管のいずれにも使用できる作業工
具用配管装置を提供することを目的とする。 The purpose of this invention is to solve the above-mentioned problems and provide a piping device for a working tool that can be used for both large flow piping and small flow piping.
問題点を解決するための手段
前記問題点を解決するために講じたこの考案の
手段は、
イ 油圧シヨベルのフロントアタツチメントに沿
つて大流量油圧アクチユエータ用配管を設け、
その大流量用配管の上流側は上記大流量油圧ア
クチユエータ用制御弁に接続し、
ロ また、上記大流量用配管のブーム根付側およ
びアーム側にそれぞれ手動切換用セレクタ弁を
介設し、
ハ さらに、上記ブーム根付側セレクタ弁を、上
記とは別の他油圧アクチユエータ用制御弁に接
続し、一方、アーム側セレクタ弁を上記他油圧
アクチユエータと接続可能に配管するととも
に、
ニ 上記ブーム根付側およびアーム側セレクタ弁
の切換操作時に、上記作業工具の大流量油圧ア
クチユエータと別の他油圧アクチユエータの
内、いずれか一方へ圧油供給可能に設定して、
構成した。Means for Solving the Problems The means of this invention taken to solve the above problems are as follows: (a) Providing piping for a large flow hydraulic actuator along the front attachment of the hydraulic excavator;
The upstream side of the large flow rate piping is connected to the control valve for the large flow rate hydraulic actuator, (b) Also, manual switching selector valves are installed on the boom root side and arm side of the high flow rate piping, respectively. , the boom root side selector valve is connected to a control valve for another hydraulic actuator other than the above, and the arm side selector valve is connected to the other hydraulic actuator by piping, and (d) the boom root side and the arm are connected. When the side selector valve is switched, pressure oil can be supplied to either the high-flow hydraulic actuator of the work tool or another hydraulic actuator,
Configured.
作 用
イ フロントアタツチメントに沿つて取付けた大
流量用配管に、ブーム根付側セレクタ弁とアー
ム側セレクタ弁をそれぞれ介設したので、その
上記両セレクタ弁をともに大流量用油圧アクチ
ユエータ通路位置へ切換えておくと、大流量油
圧アクチユエータ用制御弁より送油されてくる
圧油は、大流量用配管上流側、ブーム根付側セ
レクタ弁の大流量用油圧アクチユエータ通路位
置、大流量用配管中間側、アーム側セレタク弁
の大流量用油圧アクチユエータ通路位置を経
て、大流量用配管下流側へ供給可能となる。Function A: Since a boom root side selector valve and an arm side selector valve are installed in the large flow piping installed along the front attachment, both selector valves can be moved to the large flow hydraulic actuator passage position. If the switch is made, the pressure oil sent from the control valve for the large-flow hydraulic actuator will be routed to the upstream side of the large-flow piping, the large-flow hydraulic actuator passage position of the selector valve on the boom root side, the middle side of the large-flow piping, It can be supplied to the downstream side of the large flow rate piping through the large flow rate hydraulic actuator passage position of the arm side selector valve.
ロ 上記イ項における両セレクタ弁をともに小流
量用油圧アクチユエータ通路位置へ切換えてお
くと、イ項とは別の他油圧アクチユエータ用制
御弁より送油されてくる圧油は、小流量配管上
流側、ブーム根付側セレクタ弁の小流量油圧ア
クチユエータ通路位置、大流量用配管中間側、
アーム側セレクタ弁の小流量用油圧アクチユエ
ータ通路位置を経て、小流量用配管下流側へ供
給可能となる。(b) If both selector valves in item A above are switched to the small flow hydraulic actuator passage position, the pressure oil sent from the control valve for the hydraulic actuator other than that in item A will be transferred to the upstream side of the small flow piping. , the small flow hydraulic actuator passage position of the boom root side selector valve, the middle side of the large flow piping,
It can be supplied to the downstream side of the small flow rate piping through the small flow rate hydraulic actuator passage position of the arm side selector valve.
ハ 上記イ項およびロ項のようにして、大流量油
圧アクチユエータまたは小流量油圧アクチユエ
ータのいずれか一方へ圧油を供給するときに
は、いずれも大流量用配管中間側を圧油が通過
するので、従来技術配管のように大流量用配管
と小流量用配管とをそれぞれ別個に、並列させ
て設けることはなくなつた。C When supplying pressure oil to either the large-flow hydraulic actuator or the small-flow hydraulic actuator as described in items A and B above, the pressure oil passes through the middle side of the large-flow piping, so it is possible to Unlike technical piping, piping for large flow rates and piping for small flow rates are no longer provided separately and in parallel.
実施例
以下、この考案にかかる作業工具用配管装置を
図面に基いて詳細に説明する。第１図は、この考
案にかかる配管装置を取付けたフロントアタツチ
メント２′の側面図である。図において、３′はフ
ロントアタツチメント２′のブーム、４′はアー
ム、１０は大流量用配管、１１はブーム根付側セ
レクタ弁、１２はアーム側セレクタ弁、１３はブ
ーム３′とアーム４′結合関節部分に設けられたフ
レキシブルホース、１４は配管固定のために適宜
複数箇所に設けられた固定金具である。第２図は
第１図のＡ部をＢより見た詳細図、第３図は第１
図のＣ部をＤより見た詳細図である。Embodiments Hereinafter, a piping device for a working tool according to the present invention will be explained in detail based on the drawings. FIG. 1 is a side view of a front attachment 2' to which a piping device according to this invention is attached. In the figure, 3' is the boom of the front attachment 2', 4' is the arm, 10 is the large flow pipe, 11 is the boom root side selector valve, 12 is the arm side selector valve, 13 is the boom 3' and the arm 4 'Flexible hoses 14 provided at the joint joints are fixing fittings provided at a plurality of locations for fixing the piping. Figure 2 is a detailed view of part A in Figure 1 seen from B, and Figure 3 is a detailed view of part A in Figure 1.
It is a detailed view of section C in the figure seen from D.
次に、この考案にかかる作業工具用配管装置の
構成を第１図〜第３図について述べる。フロント
アタツチメント２′に沿つて大流量用配管１０を
設け、その大流量用配管１０の上流側イは、油圧
シヨベル本体に装備している大流量油圧アクチユ
エータ用制御弁（図示なし）に接続した。また、
上記大流量用配管１０のブーム根付側およびアー
ム側にそれぞれ手動切換用セレクタ弁１１，１２
を介設した。さらにブーム根付側セレクタ弁１１
を、上記とは別の他油圧アクチユエータ用制御弁
（図示なし）に接続した。一方、アーム側セレク
タ弁１２を上記他油圧アクチユエータ（図示な
し）と接続可能に配管した。それとともに、上記
ブーム根付側およびアーム側セレクタ弁１１，１
２の切換操作時に、上記作業工具の大流量油圧ア
クチユエータと別の他油圧アクチユエータの内、
いずれか一方へ圧油供給可能に設定して、構成し
た
次に、この考案にかかる作業工具用配管装置の
作用機能について述べる。セレクタ弁１１，１２
をともに大流量用油圧アクチユエータ通路位置Ｙ
へ切換えておくと、大流量油圧アクチユエータ用
制御弁より送油されてくる圧油は、大流量用配管
１０の上流側イ、ブーム根付側セレクタ弁１１の
大流量用油圧アクチユエータ通路位置Ｙ、大流量
用配管１０の中間側ロ、アーム側セレタク弁１２
の大流量用油圧アクチユエータ通路位置Ｙを経
て、大流量用配管１０の下流側ハへ供給可能とな
る。次に、上記両セレクタ弁１１，１２をともに
小流量用油圧アクチユエータ通路位置Ｚに切換え
ておくと、上記とは別の他油圧アクチユエータ用
制御弁より送油されてくる圧油は、小流量配管１
５の上流側ニ、ブーム根付側セレクタ弁１１の小
流量用油圧アクチユエータ通路位置Ｚ、大流量用
配管１０の中間側ロ、アーム側セレクタ弁１２の
小流量用油圧アクチユエータ通路位置Ｚ、ブロツ
ク１６を経て、小流量用配管１５′の下流側ホへ
供給可能となる。 Next, the configuration of the piping device for a working tool according to this invention will be described with reference to FIGS. 1 to 3. A large flow rate pipe 10 is provided along the front attachment 2', and the upstream end of the large flow rate line 10 is connected to a control valve (not shown) for a large flow rate hydraulic actuator installed in the hydraulic excavator body. did. Also,
Manual switching selector valves 11 and 12 are located on the boom root side and arm side of the large flow rate piping 10, respectively.
was intervened. Furthermore, the boom root side selector valve 11
was connected to a control valve for another hydraulic actuator (not shown). On the other hand, the arm side selector valve 12 was connected to the other hydraulic actuator (not shown) by piping. At the same time, the boom root side and arm side selector valves 11, 1
At the time of the switching operation in step 2, between the large flow hydraulic actuator of the work tool and another hydraulic actuator,
The system is configured so that pressure oil can be supplied to either one of them.Next, the functions of the working tool piping system according to this invention will be described. Selector valve 11, 12
Both are hydraulic actuator passage position Y for large flow rate.
When switched to , the pressure oil sent from the control valve for the large flow hydraulic actuator is transferred to the upstream side A of the large flow piping 10, the large flow hydraulic actuator passage position Y of the boom root side selector valve 11, and the large flow hydraulic actuator passage position Y of the boom root side selector valve 11. Intermediate side of flow rate piping 10, arm side selector valve 12
It can be supplied to the downstream side C of the large flow rate piping 10 through the large flow rate hydraulic actuator passage position Y. Next, when both the selector valves 11 and 12 are switched to the small flow hydraulic actuator passage position Z, the pressure oil sent from the control valve for the other hydraulic actuator other than the above is transferred to the small flow piping. 1
5 on the upstream side d, the small flow hydraulic actuator passage position Z of the boom root side selector valve 11, the middle side of the large flow piping 10, the small flow hydraulic actuator passage position Z of the arm side selector valve 12, and the block 16. After that, it can be supplied to the downstream side of the small flow rate pipe 15'.
上記のようにして、油圧シヨベル用作業工具の
大流量油圧アクチユエータまたは小流量油圧アク
チユエータのいずれか一方へ圧油を供給するとき
には、いずれも大流量用配管１０の中間側ロを圧
油が通過するので、従来技術配管のように大流量
用配管と小流量用配管とをそれぞれ別個に、並列
させて設けることはなくなつた。 As described above, when supplying pressure oil to either the large flow hydraulic actuator or the small flow hydraulic actuator of the hydraulic excavator work tool, the pressure oil passes through the middle side B of the large flow piping 10 in both cases. Therefore, it is no longer necessary to provide separate pipes for large flow rates and pipes for small flow rates in parallel, as in the prior art piping.
なお第４図は、ブロツク１７よりさらに小流量
用配管１８の下流側へ分流可能としたものである
が、小流量油圧アクチユエータが複数個ある場合
に用いる。 In addition, although FIG. 4 allows the flow to be branched further downstream of the small flow rate piping 18 from the block 17, it is used when there are a plurality of small flow rate hydraulic actuators.
考案の効果
従来技術作業工具用配管は、大流量用配管と小
流量用配管とがフロントアタツチメントに沿つて
並列に取付けられ、作業工具の種類によつて、大
流量用配管と小流量用配管の内いずれか一方を使
用するようにしていた。上記両配管はそれぞれ別
個に、供給側油路および戻り側油路として各々一
対の状態で取付けられているので、それらの重量
は大きく、作業工具操作時のエネルギーロスをも
たらすとともに、上記配管の製作費は高かつた。Effects of the invention In the conventional work tool piping, the large flow pipe and the small flow pipe are installed in parallel along the front attachment, and depending on the type of work tool, the large flow pipe and the small flow pipe are One of the pipes was to be used. Since both of the above-mentioned pipings are installed separately as a pair of supply-side oil passages and return-side oil passages, their weight is large, resulting in energy loss during operation of power tools, and the manufacturing of the above-mentioned piping The cost was high.
しかし、この考案にかかる作業工具用配管装置
では、フロントアタツチメントに沿つて大流量油
圧アクチユエータ用配管を設け、その大流量用配
管のブーム根付側およびアーム側にそれぞれ手動
切換用セレクタ弁を介設し、かつその上記両セレ
クタ弁にそれぞれ上流側および下流側小流量用配
管を接続した。それにより、油圧シヨベル用作業
工具の大流量油圧アクチユエータまたは小流量油
圧アクチユエータのいずれか一方へ圧油を供給す
るときには、上記両セレクタ弁を切換えておく
と、いずれの場合でも大流量用配管の中間側を圧
油が通過するので、従来技術のように大流量用配
管と小流量用配管とをそれぞれ別個に、並列させ
て設けることはなくなつた。 However, in the work tool piping device according to this invention, a large flow hydraulic actuator piping is provided along the front attachment, and manual switching selector valves are installed on the boom root side and arm side of the large flow piping. The upstream and downstream small flow rate pipes were connected to both selector valves, respectively. Therefore, when supplying pressure oil to either the large-flow hydraulic actuator or the small-flow hydraulic actuator of the hydraulic excavator work tool, by switching both of the selector valves mentioned above, in either case, it is possible to Since the pressure oil passes through the side, it is no longer necessary to separately provide large flow rate piping and small flow rate piping in parallel as in the prior art.
したがつて、この考案にかかる作業工具用配管
装置では、作業工具用各種油圧アクチユエータに
対する圧油供給用配管の重量を軽減して省エネ効
果をもたらすとともに、配管製作費を低減せしめ
る。 Therefore, in the piping device for a power tool according to this invention, the weight of the pressure oil supply piping to various hydraulic actuators for the power tool is reduced, resulting in an energy saving effect and reducing the cost of manufacturing the piping.
第１図はこの考案にかかる配管装置を取付けた
フロントアタツチメントの側面図、第２図は第１
図のＡ部をＢより見た詳細図、第３図は第１図の
Ｃ部をＤより見た詳細図、第４図はこの考案にか
かる配管装置の小流量用配管下流側を分流可能と
した図、第５図は従来技術作業工具用配管を取付
けた油圧シヨベルの斜視図である。
１……油圧シヨベル、２，２′……フロントア
タツチメント、３，３′……ブーム、４，４′……
アーム、７，１０……大流量用配管、８，１５，
１５′……小流量用配管、１１，１２……セレク
タ弁。
Figure 1 is a side view of the front attachment to which the piping device according to this invention is attached, and Figure 2 is the side view of the front attachment.
Figure 3 is a detailed view of section A seen from B in the figure, Figure 3 is a detailed view of section C in Figure 1 viewed from D, and Figure 4 is a piping device according to this invention that allows the downstream side of the small flow rate pipe to be diverted. FIG. 5 is a perspective view of a hydraulic excavator equipped with a conventional work tool piping. 1... Hydraulic excavator, 2, 2'... Front attachment, 3, 3'... Boom, 4, 4'...
Arm, 7, 10... Large flow piping, 8, 15,
15'...Piping for small flow rate, 11, 12...Selector valve.
Claims (1)
工具の各種油圧アクチユエータに対して圧油供給
用配管を取付けた油圧シヨベルにおいて、上記フ
ロントアタツチメントに沿つて大流量油圧アクチ
ユエータ用配管を設け、その大流量用配管の上流
側は上記大流量油圧アクチユエータ用制御弁に接
続し、またその大流量用配管のブーム根付側およ
びアーム側にそれぞれ手動切換用セレクタ弁を介
設し、さらにブーム根付側セレクタ弁を、上記と
は別の他油圧アクチユエータ用制御弁に接続し、
一方アーム側セレクタ弁を上記他油圧アクチユエ
ータと接続可能に配管するとともに、上記ブーム
根付側およびアーム側セレクタ弁の切換操作時
に、上記作業工具の大流量油圧アクチユエータと
別の他油圧アクチユエータの内、いずれか一方へ
圧油供給可能に設定して構成したことを特徴とす
る油圧シヨベルの作業工具用配管装置。 In a hydraulic excavator in which pressure oil supply piping is attached to various hydraulic actuators of work tools attached to the tip of the front attachment, piping for large-flow hydraulic actuators is installed along the front attachment, and the large-flow The upstream side of the hydraulic actuator is connected to the control valve for the large flow hydraulic actuator, and a selector valve for manual switching is installed on the boom root side and the arm side of the large flow piping, and a boom root side selector valve is installed. , connected to a control valve for a hydraulic actuator other than the above,
On the other hand, the arm side selector valve is connected to the other hydraulic actuator, and when switching the boom root side and arm side selector valves, one of the high-flow hydraulic actuator of the work tool and another hydraulic actuator can be connected. A piping device for a working tool of a hydraulic excavator, characterized in that it is configured so that pressure oil can be supplied to one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450087U JPH0510045Y2 (en) | 1987-12-02 | 1987-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450087U JPH0510045Y2 (en) | 1987-12-02 | 1987-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0190861U JPH0190861U (en) | 1989-06-14 |
| JPH0510045Y2 true JPH0510045Y2 (en) | 1993-03-11 |
Family
ID=31475855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18450087U Expired - Lifetime JPH0510045Y2 (en) | 1987-12-02 | 1987-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510045Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016089374A (en) * | 2014-10-30 | 2016-05-23 | 日立建機株式会社 | Front device for construction equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266260A (en) * | 1997-03-26 | 1998-10-06 | Kubota Corp | Arrangement structure of hydraulic pipes for work equipment |
| JP2005061061A (en) * | 2003-08-12 | 2005-03-10 | Hitachi Constr Mach Co Ltd | Construction machinery |
| KR102566594B1 (en) * | 2021-08-19 | 2023-08-16 | 주식회사 경원테크 | Structure for inputting oil pressure to bucket |
-
1987
- 1987-12-02 JP JP18450087U patent/JPH0510045Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016089374A (en) * | 2014-10-30 | 2016-05-23 | 日立建機株式会社 | Front device for construction equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0190861U (en) | 1989-06-14 |
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