JPS61204006U - - Google Patents
Info
- Publication number
- JPS61204006U JPS61204006U JP1985089360U JP8936085U JPS61204006U JP S61204006 U JPS61204006 U JP S61204006U JP 1985089360 U JP1985089360 U JP 1985089360U JP 8936085 U JP8936085 U JP 8936085U JP S61204006 U JPS61204006 U JP S61204006U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- speed
- oil chamber
- side oil
- double
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案を農用ローダに適用した実施例
を示す油圧回路図、第２図は従来技術に係る油圧
回路図、第３図は同じく従来技術に係る増速弁の
回路図である。
５……複動式油圧シリンダ、５ａ……ボトム側
油室、５ｂ……ヘツド側油室、６……油圧ポンプ
、８……方向切換弁、９……高速伸長駆動弁、Ｈ
……高速伸長位置、Ｓ……標準速度位置、Ｌ……
伸長位置、Ｎ……中立位置、Ｍ……収縮位置。
FIG. 1 is a hydraulic circuit diagram showing an embodiment in which the present invention is applied to an agricultural loader, FIG. 2 is a hydraulic circuit diagram according to the prior art, and FIG. 3 is a circuit diagram of a speed increasing valve according to the prior art. 5...Double acting hydraulic cylinder, 5a...Bottom side oil chamber, 5b...Head side oil chamber, 6...Hydraulic pump, 8...Directional switching valve, 9...High speed extension drive valve, H
...High-speed extension position, S...Standard speed position, L...
Extended position, N...neutral position, M...contracted position.
補正 昭６０．７．９
実用新案登録請求の範囲を次のように補正する
。Amendment July 9, 1980 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
油圧ポンプ６に方向切換弁８と導油路１０・１
１を介して複動式油圧シリンダ５を連通連結し、
導油路１０・１１に高速伸長駆動弁９を設け、こ
の高速伸長駆動弁９は方向切換弁８を伸長位置Ｌ
に投入することにより圧油を当該油圧シリンダ５
のボトム側油室５ａに圧入して油圧シリンダ５の
ヘツド側油室５ｂからの戻り油をボトム側油室５
ａに流入させて、油圧シリンダ５を高速度で伸長
駆動するように構成した複動式油圧シリンダの高
速伸長駆動装置において、
高速伸長駆動弁９は標準速度位置Ｓと高速伸長
位置Ｈとを有するソレノイド操作式速度切換弁で
構成し、標準速度位置Ｓは圧力ポートＰ１を油圧
シリンダ５のボトム側油室５ａに、ヘツド側油室
５ｂを戻りポートＰ２に連通し、高度伸長位置Ｈ
は圧力ポートＰ１をボトム側油室５ａとヘツド側
油室５ｂとの両方に連通するとともに、戻りポー
トＰ２をブロツクするように構成したことを特徴
とする複動式油圧シリンダの高速伸長駆動装置。[Scope of claim for utility model registration] Hydraulic pump 6, directional control valve 8 and oil guide passages 10 and 1
A double-acting hydraulic cylinder 5 is connected in communication via 1,
A high-speed extension drive valve 9 is provided in the oil guide passages 10 and 11, and this high-speed extension drive valve 9 moves the directional control valve 8 to the extension position L.
By injecting pressure oil into the hydraulic cylinder 5
The return oil from the head side oil chamber 5b of the hydraulic cylinder 5 is press-fitted into the bottom side oil chamber 5a of the hydraulic cylinder 5.
In the high-speed extension drive device for a double-acting hydraulic cylinder configured to extend the hydraulic cylinder 5 at a high speed by allowing flow into It is composed of a solenoid-operated speed switching valve, and the standard speed position S communicates the pressure port P1 with the bottom side oil chamber 5a of the hydraulic cylinder 5, the head side oil chamber 5b with the return port P2 , and the high extension position H.
This is a high-speed extension drive of a double-acting hydraulic cylinder, characterized in that the pressure port P1 is configured to communicate with both the bottom side oil chamber 5a and the head side oil chamber 5b, and the return port P2 is blocked. Device.
Claims (1)
１を介して複動式油圧シリンダ５を連動連結し、
導油路１０・１１に高速伸長駆動弁９を設け、こ
の高速伸長駆動弁９は方向切換弁８を伸長位置Ｌ
に投入することにより圧油を当該油圧シリンダ５
のボトム側油室５ａに圧入して油圧シリンダ５の
ヘツド側油室５ｂからの戻り油をボトム側油室５
ａに流入させて、油圧シリンダ５を高速度で伸長
駆動するように構成した複動式油圧シリンダの高
速伸長駆動装置において、 高速伸長駆動弁９は標準速度位置Ｓと高速伸長
位置Ｈとを有するソレノイド操作式速度切換弁で
構成し、標準速度位置Ｓは圧力ポートＰ１を油圧
シリンダ５のボトム側油室５ａに、ヘツド側油室
５ｂを戻りポートＰ２に連通し、高度伸長位置Ｈ
は圧力ポートＰ１をボトム側油室５ａとヘツド側
油室５ｂとの両方に連通するとともに、戻りポー
トＰ２をブロツクするように構成したことを特徴
とする複動式油圧シリンダの高速伸長駆動装置。[Scope of claim for utility model registration] Hydraulic pump 6, directional control valve 8 and oil guide passages 10 and 1
A double-acting hydraulic cylinder 5 is interlocked via 1,
A high-speed extension drive valve 9 is provided in the oil guide passages 10 and 11, and this high-speed extension drive valve 9 moves the directional control valve 8 to the extension position L.
By injecting pressure oil into the hydraulic cylinder 5
The return oil from the head side oil chamber 5b of the hydraulic cylinder 5 is press-fitted into the bottom side oil chamber 5a of the hydraulic cylinder 5.
In the high-speed extension drive device for a double-acting hydraulic cylinder configured to extend the hydraulic cylinder 5 at a high speed by allowing flow into It is composed of a solenoid-operated speed switching valve, and the standard speed position S communicates the pressure port P1 with the bottom side oil chamber 5a of the hydraulic cylinder 5, the head side oil chamber 5b with the return port P2 , and the high extension position H.
This is a high-speed extension drive of a double-acting hydraulic cylinder, characterized in that the pressure port P1 is configured to communicate with both the bottom side oil chamber 5a and the head side oil chamber 5b, and the return port P2 is blocked. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985089360U JPS61204006U (en) | 1985-06-13 | 1985-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985089360U JPS61204006U (en) | 1985-06-13 | 1985-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61204006U true JPS61204006U (en) | 1986-12-22 |
Family
ID=30643361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985089360U Pending JPS61204006U (en) | 1985-06-13 | 1985-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61204006U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0379609U (en) * | 1989-12-04 | 1991-08-14 | ||
| JPH06117415A (en) * | 1991-02-15 | 1994-04-26 | Yutani Heavy Ind Ltd | Variable regeneration circuit |
| WO1994013959A1 (en) * | 1992-12-04 | 1994-06-23 | Hitachi Construction Machinery Co., Ltd. | Hydraulic regenerator |
| WO2007116896A1 (en) * | 2006-04-06 | 2007-10-18 | Komatsu Ltd. | Working machine, and quick load-dropping method |
| JP2014080812A (en) * | 2012-10-17 | 2014-05-08 | Sanyo Kiki Co Ltd | Hydraulic circuit of work machine |
| US20200385952A1 (en) * | 2017-12-08 | 2020-12-10 | Volvo Construction Equipment Ab | An implement attachment device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569533A (en) * | 1979-07-06 | 1981-01-31 | Iseki & Co Ltd | Bucket releasing speed controlling system for front loader |
-
1985
- 1985-06-13 JP JP1985089360U patent/JPS61204006U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569533A (en) * | 1979-07-06 | 1981-01-31 | Iseki & Co Ltd | Bucket releasing speed controlling system for front loader |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0379609U (en) * | 1989-12-04 | 1991-08-14 | ||
| JPH06117415A (en) * | 1991-02-15 | 1994-04-26 | Yutani Heavy Ind Ltd | Variable regeneration circuit |
| WO1994013959A1 (en) * | 1992-12-04 | 1994-06-23 | Hitachi Construction Machinery Co., Ltd. | Hydraulic regenerator |
| JP3139769B2 (en) * | 1992-12-04 | 2001-03-05 | 日立建機株式会社 | Hydraulic regeneration device |
| WO2007116896A1 (en) * | 2006-04-06 | 2007-10-18 | Komatsu Ltd. | Working machine, and quick load-dropping method |
| JP2014080812A (en) * | 2012-10-17 | 2014-05-08 | Sanyo Kiki Co Ltd | Hydraulic circuit of work machine |
| US20200385952A1 (en) * | 2017-12-08 | 2020-12-10 | Volvo Construction Equipment Ab | An implement attachment device |
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