JPS6443494A - Rope delivery device at time of emergency of lift - Google Patents

Rope delivery device at time of emergency of lift

Info

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
Application number
JP20047687A
Other languages
Japanese (ja)
Inventor
Sumihiro Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP20047687A priority Critical patent/JPS6443494A/en
Publication of JPS6443494A publication Critical patent/JPS6443494A/en
Pending legal-status Critical Current

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.
JP20047687A 1987-08-11 1987-08-11 Rope delivery device at time of emergency of lift Pending JPS6443494A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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