GB1217494A - Automatic compensator for crane lifting - Google Patents
Automatic compensator for crane liftingInfo
- Publication number
- GB1217494A GB1217494A GB820467A GB820467A GB1217494A GB 1217494 A GB1217494 A GB 1217494A GB 820467 A GB820467 A GB 820467A GB 820467 A GB820467 A GB 820467A GB 1217494 A GB1217494 A GB 1217494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- cylinder
- link
- feb
- hook
- 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
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
1,217,494. Fluid-pressure servomotor systems. R. C. PEARSON. Feb.15, 1968 [Feb. 21, 1967], No.8204/67. Heading G3P. [Also in Division B8] The cable 6 of a crane mounted on a marine drilling rig is provided with a manually controlled telescopic link to compensate for movements of a supply vessel when articles are being transferred to and from the latter. The link comprises a piston 9 connected by rod 7 to the cable, and a cylinder 8 connected by a chain to the hook 5. A valve spool 24 carried by a housing 10 fixed to cylinder 8 is biased by spring 33 to a position connecting port 29 to exhaust line 19, thereby allowing supply pressure admitted to chamber 17 from line 11 to fully retract the link. The spool is manually controlled from the vessel via lever 31 or a chain, and the cylinder 8 automatically follows movements of the lever whether those are intentional to reposition the hook or involuntary due to rise and fall of the vessel. Pressure fluid is supplied from the platform or vessel or from a pump on the ram, in which latter case the pump motor is powered through flexible cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB820467A GB1217494A (en) | 1967-02-21 | 1967-02-21 | Automatic compensator for crane lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB820467A GB1217494A (en) | 1967-02-21 | 1967-02-21 | Automatic compensator for crane lifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1217494A true GB1217494A (en) | 1970-12-31 |
Family
ID=9847864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB820467A Expired GB1217494A (en) | 1967-02-21 | 1967-02-21 | Automatic compensator for crane lifting |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1217494A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103795U (en) * | 1972-03-10 | 1973-12-04 | ||
| CN101585479B (en) * | 2009-06-15 | 2011-05-18 | 煤炭科学研究总院太原研究院 | Hoist device of bracket transport vehicle |
| CN105370223A (en) * | 2015-12-10 | 2016-03-02 | 吉林大学 | Drill pipe screw thread protector |
| CN113233356A (en) * | 2021-05-11 | 2021-08-10 | 江苏科技大学 | Heave compensation system, heave compensation method and operation method for marine crane |
-
1967
- 1967-02-21 GB GB820467A patent/GB1217494A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103795U (en) * | 1972-03-10 | 1973-12-04 | ||
| CN101585479B (en) * | 2009-06-15 | 2011-05-18 | 煤炭科学研究总院太原研究院 | Hoist device of bracket transport vehicle |
| CN105370223A (en) * | 2015-12-10 | 2016-03-02 | 吉林大学 | Drill pipe screw thread protector |
| CN113233356A (en) * | 2021-05-11 | 2021-08-10 | 江苏科技大学 | Heave compensation system, heave compensation method and operation method for marine crane |
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