JPS6443494A - Rope delivery device at time of emergency of lift - Google Patents
Rope delivery device at time of emergency of liftInfo
- Publication number
- JPS6443494A JPS6443494A JP20047687A JP20047687A JPS6443494A JP S6443494 A JPS6443494 A JP S6443494A JP 20047687 A JP20047687 A JP 20047687A JP 20047687 A JP20047687 A JP 20047687A JP S6443494 A JPS6443494 A JP S6443494A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- oil
- hoist rope
- move
- pressure
- 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
Abstract
PURPOSE: To miniaturize a device by constituting it through a double rod type hydraulic cylinder, having a connecting piston rod and a guiding piston rod on both the sides of a piston, and a working load setting device connected to an oil pressure chamber on the connecting piston rod side and retaining pressure in the oil pressure chamber at a set load. CONSTITUTION: When the tension of a hoist rope is increased to reach a set load, a coil spring 47 is compressed by pressure oil to move a piston 45 in a III direction; consequently the pressure oil in the oil pressure chamber 30 flows out into a working load setting device 19 to pull and move a piston 15 in an I direction. When the (a) position of the piston 15 passes a piston packing 34, differential pressure becomes zero to move the piston 15 in the pressure oil in low resistance. Consequently a sheave, pulled in the I direction by the hoist rope, moves in low resistance to deliver the hoist rope by wound quantity due to a time difference; and the hoist rope stops this movement with a shock absorbed by a locking seat plate 36 and a rubber buffer 37 at a stroke end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20047687A JPS6443494A (en) | 1987-08-11 | 1987-08-11 | Rope delivery device at time of emergency of lift |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20047687A JPS6443494A (en) | 1987-08-11 | 1987-08-11 | Rope delivery device at time of emergency of lift |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6443494A true JPS6443494A (en) | 1989-02-15 |
Family
ID=16424951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20047687A Pending JPS6443494A (en) | 1987-08-11 | 1987-08-11 | Rope delivery device at time of emergency of lift |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6443494A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014146822A1 (en) * | 2013-03-21 | 2014-09-25 | M.A.T. Malmedie Antriebstechnik Gmbh | Overload protection device for cable strands |
-
1987
- 1987-08-11 JP JP20047687A patent/JPS6443494A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014146822A1 (en) * | 2013-03-21 | 2014-09-25 | M.A.T. Malmedie Antriebstechnik Gmbh | Overload protection device for cable strands |
US10023442B2 (en) | 2013-03-21 | 2018-07-17 | M.A.T. Malmedie Antriebstechnik Gmbh | Overload protection device for cable strands |
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