JPH01126398U - - Google Patents
Info
- Publication number
- JPH01126398U JPH01126398U JP2125488U JP2125488U JPH01126398U JP H01126398 U JPH01126398 U JP H01126398U JP 2125488 U JP2125488 U JP 2125488U JP 2125488 U JP2125488 U JP 2125488U JP H01126398 U JPH01126398 U JP H01126398U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic circuit
- valve
- forklift
- lift cylinder
- opening degree
- 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
Landscapes
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案の一実施例の要部の回路図、
第２図ａ，ｂはそれぞれこの考案と従来のものと
の下降速度の状態を比較して示した説明図、第３
図は従来例、第４図ａ，ｂは第３図の下降速度制
御装置の２つの回路図である。
１……圧力補償弁、２……タンク、ｃ……方向
切換弁、ｄ……下降速度制御装置、ｅ……リフト
シリンダ。
Figure 1 is a circuit diagram of the main part of an embodiment of this invention.
Figures 2a and b are explanatory diagrams comparing the state of the descending speed between this invention and the conventional one, respectively, and Figure 3
The figure shows a conventional example, and FIGS. 4a and 4b are two circuit diagrams of the descending speed control device of FIG. 3. 1...Pressure compensation valve, 2...Tank, c...Directional switching valve, d...Descent speed control device, e...Lift cylinder.
Claims (1)
、リフトシリンダと方向切換弁とにそれぞれ連通
する下降速度制御装置の油圧回路に設けた圧力補
償弁をタンクに直接ドレーンさせ、圧力補償弁の
開度を方向切換弁の位置によらず常にリフトシリ
ンダの保持圧に応じた開度に制御するようにした
ことを特徴とする、フオークリフトの油圧回路。 In the hydraulic circuit for lifting and lowering cargo on a forklift, the pressure compensation valve installed in the hydraulic circuit of the descending speed control device, which communicates with the lift cylinder and the direction switching valve, is drained directly to the tank, and the opening degree of the pressure compensation valve is switched in direction. A hydraulic circuit for a forklift, characterized in that the opening degree is always controlled according to the holding pressure of a lift cylinder, regardless of the position of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125488U JPH01126398U (en) | 1988-02-22 | 1988-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125488U JPH01126398U (en) | 1988-02-22 | 1988-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01126398U true JPH01126398U (en) | 1989-08-29 |
Family
ID=31238328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2125488U Pending JPH01126398U (en) | 1988-02-22 | 1988-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01126398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045500U (en) * | 1990-04-26 | 1992-01-20 | ||
| KR101023744B1 (en) * | 2003-12-26 | 2011-03-25 | 두산인프라코어 주식회사 | Hydraulic system for forklift truck |
| JP2016016982A (en) * | 2014-07-11 | 2016-02-01 | 太平電業株式会社 | Hydraulic circuit structure for jack device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216899A (en) * | 1982-06-11 | 1983-12-16 | ダイキン工業株式会社 | Fluid circuit |
| JPS638199A (en) * | 1986-06-30 | 1988-01-13 | 小松フオ−クリフト株式会社 | Speed controller for working machine for forklift |
-
1988
- 1988-02-22 JP JP2125488U patent/JPH01126398U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216899A (en) * | 1982-06-11 | 1983-12-16 | ダイキン工業株式会社 | Fluid circuit |
| JPS638199A (en) * | 1986-06-30 | 1988-01-13 | 小松フオ−クリフト株式会社 | Speed controller for working machine for forklift |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045500U (en) * | 1990-04-26 | 1992-01-20 | ||
| KR101023744B1 (en) * | 2003-12-26 | 2011-03-25 | 두산인프라코어 주식회사 | Hydraulic system for forklift truck |
| JP2016016982A (en) * | 2014-07-11 | 2016-02-01 | 太平電業株式会社 | Hydraulic circuit structure for jack device |
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