GB786410A - Rope slack-preventing device for cranes or other winch-driven lifting means - Google Patents
Rope slack-preventing device for cranes or other winch-driven lifting meansInfo
- Publication number
- GB786410A GB786410A GB16943/56A GB1694356A GB786410A GB 786410 A GB786410 A GB 786410A GB 16943/56 A GB16943/56 A GB 16943/56A GB 1694356 A GB1694356 A GB 1694356A GB 786410 A GB786410 A GB 786410A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- rope
- spring
- slack
- lever
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
- B66B5/125—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
Landscapes
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
786,410. Slack-preventing. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. June 1, 1956 [June 17, 1955], No. 16943/56. Classes 78 (4) and 78 (5). A device for preventing slack in the lifting rope of a crane, comprises a rotatable frame 5 carrying two rollers 6 which press on the rope 7 in opposite directions and is characterized in that the frame shaft 4 is provided with crank levers 8, 9 influenced respectively by compression springs 11, 13 whereby when the rope slackens the rollers move to take up the slack and, ultimately, operate a switch or governor 18 to cut out or slow down the winch drum motor. As shown, spring 13 acts upon lever 15 pivoted at 14 to the frame 1 the lever 15 being grooved at 17 concentrically about shaft 4 and the roller 16 of lever 9 rolling in the groove. Thus, for any small rotation of frame 5 as defined by roller 16 contacting groove 17, the frame is influenced clockwise against the rope by the single spring 11, but for any greater rotation, i.e. when roller 16 escapes from groove 17, the frame is influenced clockwise against the rope by both spring 11 and spring 13.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE786410X | 1955-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB786410A true GB786410A (en) | 1957-11-20 |
Family
ID=20336823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16943/56A Expired GB786410A (en) | 1955-06-17 | 1956-06-01 | Rope slack-preventing device for cranes or other winch-driven lifting means |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB786410A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2618420A1 (en) * | 1987-07-20 | 1989-01-27 | Sotoma | Device for stopping automatically the control of the cabin of a hoist under the effect of the slack of a cable and hoist cabin fitted with this device |
US20130048431A1 (en) * | 2011-08-31 | 2013-02-28 | Bernhard Grossrieder | Elevator with compensating device |
US11198588B2 (en) * | 2018-06-27 | 2021-12-14 | Tk Elevator Innovation And Operations Gmbh | Counterweight slack belt detection switch |
-
1956
- 1956-06-01 GB GB16943/56A patent/GB786410A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2618420A1 (en) * | 1987-07-20 | 1989-01-27 | Sotoma | Device for stopping automatically the control of the cabin of a hoist under the effect of the slack of a cable and hoist cabin fitted with this device |
US20130048431A1 (en) * | 2011-08-31 | 2013-02-28 | Bernhard Grossrieder | Elevator with compensating device |
US9272879B2 (en) * | 2011-08-31 | 2016-03-01 | Inventio Ag | Elevator with compensating device |
US11198588B2 (en) * | 2018-06-27 | 2021-12-14 | Tk Elevator Innovation And Operations Gmbh | Counterweight slack belt detection switch |
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