JPH0266600U - - Google Patents
Info
- Publication number
- JPH0266600U JPH0266600U JP14625688U JP14625688U JPH0266600U JP H0266600 U JPH0266600 U JP H0266600U JP 14625688 U JP14625688 U JP 14625688U JP 14625688 U JP14625688 U JP 14625688U JP H0266600 U JPH0266600 U JP H0266600U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- pressure oil
- cargo handling
- pump
- lift cylinders
- 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
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案荷役車両の昇降装置の油圧回路
の一実施例を示す図、第２図は本考案荷役車両の
昇降装置が利用される荷役車両の側面図、第３図
は同じく荷役車両の昇降装置の平面図、第４図は
同じく軽負荷上昇時における油圧回路内での圧油
の流れを示す図、第５図は同じく軽負荷下降時に
おける油圧回路内での圧油の流れを示す図、第６
図は高負荷上昇時における油圧回路内での圧油の
流れを示す図、第７図は同じく高負荷下降時にお
ける油圧回路内での圧油の流れを示す図、第８図
は従来の荷役車両の昇降装置の油圧回路を示す図
である。
１３：第一リフトシリンダ、１４：第二リフト
シリンダ、１７：荷扱具（フオーク）、１９：油
圧回路、２０：タンク、２１：油圧ポンプ、２２
：切換弁、Ｒ１：第一通路、Ｒ２：第二通路。
Fig. 1 is a diagram showing an embodiment of the hydraulic circuit of the lifting device of the cargo handling vehicle of the present invention, Fig. 2 is a side view of the cargo handling vehicle in which the lifting device of the cargo handling vehicle of the present invention is used, and Fig. 3 is the same as the cargo handling vehicle. Fig. 4 is a plan view of the lifting device, and Fig. 4 is a diagram showing the flow of pressure oil in the hydraulic circuit when a light load is raised, and Fig. 5 is a diagram showing the flow of pressure oil in the hydraulic circuit when a light load is lowered. Figure shown, No. 6
The figure shows the flow of pressure oil in the hydraulic circuit when a high load is raised, Figure 7 shows the flow of pressure oil in the hydraulic circuit when a high load is lowered, and Figure 8 shows the flow of pressure oil in the hydraulic circuit when a high load is lowered. FIG. 3 is a diagram showing a hydraulic circuit of a vehicle lifting device. 13: First lift cylinder, 14: Second lift cylinder, 17: Cargo handling tool (fork), 19: Hydraulic circuit, 20: Tank, 21: Hydraulic pump, 22
: switching valve, R1: first passage, R2: second passage.
Claims (1)
ンダ１３，１４と、該両リフトシリンダ１３，１
４の伸長を制御する油圧回路１９とを備え、該油
圧回路１９に、前記両リフトシリンダ１３，１４
へタンク２０からの圧油を送油する油圧ポンプ２
１と、該ポンプ２１から前記第一リフトシリンダ
１３のテール１３ａ側へ圧油を供給する第一通路
Ｒ１と、ポンプ２１から前記第二リフトシリンダ
１４のテール１４ａ側へ圧油を供給する第二通路
Ｒ２と、前記荷扱具１７の軽負荷時に前記第二通
路Ｒ２を遮断する遮断姿勢と高負荷時に前記第二
通路Ｒ２を開放する開放姿勢とに切換可能な切換
弁２２とが設けられたことを特徴とする荷役車両
の昇降装置。 First and second lift cylinders 13, 14 for raising and lowering the cargo handling tool 17, and both lift cylinders 13, 1
4, and a hydraulic circuit 19 for controlling the extension of the lift cylinders 13, 14.
Hydraulic pump 2 that sends pressure oil from tank 20 to
1, a first passage R1 that supplies pressure oil from the pump 21 to the tail 13a side of the first lift cylinder 13, and a second passage R1 that supplies pressure oil from the pump 21 to the tail 14a side of the second lift cylinder 14. A switching valve 22 is provided for the passage R2 and the switching valve 22 which can be switched between a blocking position in which the second passage R2 is shut off when the cargo handling tool 17 is under a light load and an open position in which the second passage R2 is opened when the load is high. A lifting device for a cargo handling vehicle characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14625688U JPH0266600U (en) | 1988-11-08 | 1988-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14625688U JPH0266600U (en) | 1988-11-08 | 1988-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0266600U true JPH0266600U (en) | 1990-05-18 |
Family
ID=31415575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14625688U Pending JPH0266600U (en) | 1988-11-08 | 1988-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0266600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075014A (en) * | 2009-09-30 | 2011-04-14 | Ckd Corp | Hydraulic cylinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5772600A (en) * | 1980-10-20 | 1982-05-06 | Nissan Motor | Oil pressure circuit in cargo-handling apparatus for industrial car |
| JPS5950996B2 (en) * | 1977-02-07 | 1984-12-11 | ブラザー工業株式会社 | Volume control circuit for electronic musical instruments |
-
1988
- 1988-11-08 JP JP14625688U patent/JPH0266600U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950996B2 (en) * | 1977-02-07 | 1984-12-11 | ブラザー工業株式会社 | Volume control circuit for electronic musical instruments |
| JPS5772600A (en) * | 1980-10-20 | 1982-05-06 | Nissan Motor | Oil pressure circuit in cargo-handling apparatus for industrial car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075014A (en) * | 2009-09-30 | 2011-04-14 | Ckd Corp | Hydraulic cylinder |
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