JPS6289350U - - Google Patents
Info
- Publication number
- JPS6289350U JPS6289350U JP18178485U JP18178485U JPS6289350U JP S6289350 U JPS6289350 U JP S6289350U JP 18178485 U JP18178485 U JP 18178485U JP 18178485 U JP18178485 U JP 18178485U JP S6289350 U JPS6289350 U JP S6289350U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- swing
- lever
- cylinder
- check valve
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Description
図面は本考案に係るバツクホウの油圧操作部の
実施例を示し、第１図は閉じ状態の開閉弁の断面
を示す正面図、第２図は閉じ状態の開閉弁の断面
を示す側面図、第３図は開き状態の開閉弁の断面
を示す側面図、第４図は油圧回路図、第５図はバ
ツクホウの全体側面図である。
５……旋回台、１４……スイングシリンダ、１
５……スイングバルブ、１６……旋回バルブ、２
４……レバー、２６……切換レバー、３０……回
転スプール、３１……開閉弁、３１Ａ……弁箱、
３１Ｂ……出力ポート、３３……チエツク弁、３
５……連動部、Ｍ２……旋回用モータ。
The drawings show an embodiment of the hydraulic operation section of a backhoe according to the present invention, in which FIG. 1 is a front view showing a cross section of the on-off valve in a closed state, FIG. 2 is a side view showing a cross section of the on-off valve in a closed state, and FIG. 3 is a side view showing a cross section of the on-off valve in an open state, FIG. 4 is a hydraulic circuit diagram, and FIG. 5 is an overall side view of the backhoe. 5...Swivel base, 14...Swing cylinder, 1
5...Swing valve, 16...Swivel valve, 2
4...Lever, 26...Switching lever, 30...Rotating spool, 31...Opening/closing valve, 31A...Valve box,
31B...Output port, 33...Check valve, 3
5...Interlocking part, M2 ...Turning motor.
Claims (1)
作用スイングシリンダ１４に対するスイングバル
ブ１５と、前記旋回台５の旋回用モータＭ２に対
する旋回バルブ１６とを択一的に操作する一本の
レバー２４を設け、前記レバー２４をスイングバ
ルブ１５操作状態又は旋回バルブ１６操作状態に
人為切換する切換レバー２６を設けてあるバツク
ホウにおいて、回転スプール３０を備えた開閉弁
３１を、前記スイングシリンダ１４とスイングバ
ルブ１５との間の接続油路Ｒに設けると共に、前
記回転スプール３０を前記切換レバー２６に連動
連結し、前記開閉弁３１における弁箱３１Ａ内の
前記スイングシリンダ１４側出力ポート３１Ｂに
、前記スイングシリンダ１４からスイングバルブ
１５への油の流れを阻止するチエツク弁３３を設
け、前記スイングバルブ１５操作状態で前記チエ
ツク弁３３を開き作動するように、前記回転スプ
ール３０と前記チエツク弁３３との間にカム式の
連動部３５を形成してあるバツクホウの油圧操作
部。 One lever that selectively operates the swing valve 15 for the swing cylinder 14 for left-right rotation operation of the working arm attached to the swivel base 5, and the swing valve 16 for the rotation motor M2 of the swivel base 5. 24 and a switching lever 26 for manually switching the lever 24 to a swing valve 15 operating state or a turning valve 16 operating state, an on-off valve 31 equipped with a rotary spool 30 is connected to the swing cylinder 14 and swings. The rotating spool 30 is connected to the switching lever 26 in conjunction with the connecting oil path R between the valve 15 and the swing cylinder 14 side output port 31B in the valve box 31A of the on-off valve 31. A check valve 33 is provided to prevent the flow of oil from the cylinder 14 to the swing valve 15, and a check valve 33 is provided between the rotary spool 30 and the check valve 33 so that the check valve 33 is opened and operated when the swing valve 15 is operated. The hydraulic operation part of the backhoe has a cam-type interlocking part 35 formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985181784U JPH0521566Y2 (en) | 1985-11-26 | 1985-11-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985181784U JPH0521566Y2 (en) | 1985-11-26 | 1985-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6289350U true JPS6289350U (en) | 1987-06-08 |
| JPH0521566Y2 JPH0521566Y2 (en) | 1993-06-02 |
Family
ID=31126976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985181784U Expired - Lifetime JPH0521566Y2 (en) | 1985-11-26 | 1985-11-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521566Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124555U (en) * | 1982-02-17 | 1983-08-24 | 株式会社クボタ | Work vehicle fluid pressure circuit operation structure |
-
1985
- 1985-11-26 JP JP1985181784U patent/JPH0521566Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124555U (en) * | 1982-02-17 | 1983-08-24 | 株式会社クボタ | Work vehicle fluid pressure circuit operation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521566Y2 (en) | 1993-06-02 |
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