JPH0451499U - - Google Patents
Info
- Publication number
- JPH0451499U JPH0451499U JP9328690U JP9328690U JPH0451499U JP H0451499 U JPH0451499 U JP H0451499U JP 9328690 U JP9328690 U JP 9328690U JP 9328690 U JP9328690 U JP 9328690U JP H0451499 U JPH0451499 U JP H0451499U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- clamping device
- pressure
- clamp
- unclamping
- 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 2
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Description
第１図は本考案の一実施例を示す油圧回路図、
第２図は従来の荷役用挟持装置を示す正面図、第
３図は従来の荷役用挟持装置の油圧回路図である
。
２……クランプ装置、６……ワーク、７……油
圧シリンダ、１０……油圧ポンプ、１４……切換
弁、１９……アンロード弁、２０……パイロツト
オペレートチエツク弁、２１……アキユムレータ
、２３……絞り、２６……ばね、２７……比例ソ
レノイド。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention;
FIG. 2 is a front view of a conventional cargo handling clamping device, and FIG. 3 is a hydraulic circuit diagram of the conventional cargo handling clamping device. 2... Clamping device, 6... Work, 7... Hydraulic cylinder, 10... Hydraulic pump, 14... Switching valve, 19... Unloading valve, 20... Pilot operator check valve, 21... Accumulator, 23 ...Aperture, 26...Spring, 27...Proportional solenoid.
Claims (1)
装置をクランプ操作およびアンクランプ操作する
油圧シリンダと、 前記クランプ装置が前記油圧シリンダによりク
ランプ操作およびアンクランプ操作されるように
前記油圧ポンプからの吐出油を制御する切換弁と
、 前記クランプ操作時の油圧シリンダのクランプ
圧力によつて蓄圧されるアキユムレータと、 前記クランプ操作時のクランプ圧力供給管路に
介装され、前記アンクランプ操作時に前記油圧シ
リンダに供給されるアンクランプ圧力によつて開
弁動作して前記油圧シリンダからの戻り油の流れ
を許容するチエツク弁とを備えた荷役車両用挟持
装置において、 前記チエツク弁と油圧シリンダとの間に設けら
れ、前記クランプ圧力が所定値以上になると前記
油圧ポンプをアンロードして前記アキユムレータ
の蓄圧力を制御するアンロード手段と、 前記所定値を調節する調節手段とを備えたこと
を特徴とする荷役車両用挟持装置。[Scope of Claim for Utility Model Registration] A clamping device that clamps a workpiece; a hydraulic cylinder that performs clamping and unclamping operations on the clamping device using oil discharged from a hydraulic pump; and a hydraulic cylinder that performs clamping operations on the clamping device using the hydraulic cylinder. and a switching valve that controls oil discharged from the hydraulic pump so as to perform an unclamp operation; an accumulator that accumulates pressure by the clamp pressure of the hydraulic cylinder during the clamp operation; and a clamp pressure supply pipe during the clamp operation. For a cargo handling vehicle, the check valve is installed in a road and is opened by unclamping pressure supplied to the hydraulic cylinder during the unclamping operation to allow return oil to flow from the hydraulic cylinder. In the clamping device, an unloading means is provided between the check valve and the hydraulic cylinder, and unloads the hydraulic pump to control the accumulated pressure of the accumulator when the clamp pressure exceeds a predetermined value; A clamping device for a cargo handling vehicle, characterized in that it is equipped with an adjusting means for adjusting the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9328690U JPH0712399Y2 (en) | 1990-09-05 | 1990-09-05 | Clamping device for cargo handling vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9328690U JPH0712399Y2 (en) | 1990-09-05 | 1990-09-05 | Clamping device for cargo handling vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0451499U true JPH0451499U (en) | 1992-04-30 |
| JPH0712399Y2 JPH0712399Y2 (en) | 1995-03-22 |
Family
ID=31830373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9328690U Expired - Lifetime JPH0712399Y2 (en) | 1990-09-05 | 1990-09-05 | Clamping device for cargo handling vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712399Y2 (en) |
-
1990
- 1990-09-05 JP JP9328690U patent/JPH0712399Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0712399Y2 (en) | 1995-03-22 |
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