GB1322118A - Safety control for crane load lines - Google Patents
Safety control for crane load linesInfo
- Publication number
- GB1322118A GB1322118A GB2229171A GB2229171A GB1322118A GB 1322118 A GB1322118 A GB 1322118A GB 2229171 A GB2229171 A GB 2229171A GB 2229171 A GB2229171 A GB 2229171A GB 1322118 A GB1322118 A GB 1322118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boom
- crane
- load line
- load
- conduit
- 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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1322118 Crane safety devices; winche mountings J I CASE CO 19 April 1971 [2 June 1970] 22291/71 Heading B8B A crane comprises a telescopic boom 24, 26, 28 extended by rams 30, 32 fed with hydraulic pressure fluid through a conduit 34. A load line 42 from a winch drum 48 passes over pulleys 47, 46 to a load block 40. The winch drum 48 is supported on a bracket 60 by lugs 68, (62), Fig. 2 (not shown), the whole being carried by standards 64 forming part of a base 67 attached to base section 16 of the crane. Tension in the load line 42 tends to cause an arm 84 attached to the bracket 60 to rotate counterclockwise against the action of a spring 74. If the boom 24 is extended inadvertently so as to cause the load block 40 to jam against the boom head the tension in the load line 42 rises and, at a predetermined level, the arm 84 moves enough to actuate a cut-off valve 80 in the conduit 34 to prevent further extension of the boom 24.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4283770A | 1970-06-02 | 1970-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1322118A true GB1322118A (en) | 1973-07-04 |
Family
ID=21924008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2229171A Expired GB1322118A (en) | 1970-06-02 | 1971-04-19 | Safety control for crane load lines |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3658188A (en) |
| CA (1) | CA929896A (en) |
| GB (1) | GB1322118A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771668A (en) * | 1972-04-24 | 1973-11-13 | Harnischfeger Corp | Tension scale system for lifting cable of a telescoping boom crane |
| US4483109A (en) * | 1983-07-01 | 1984-11-20 | Jlg Industries, Inc. | Boom latching system |
| AT392010B (en) * | 1987-11-25 | 1991-01-10 | Walter Ing Kuenz | DEVICE FOR FIGHTING UP LARGE FIRE STOVES |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161403B (en) * | 1958-12-15 | 1964-01-16 | Unicovske Strojirny | Overload protection device for a hoist |
| SU129317A1 (en) * | 1959-07-13 | 1959-11-30 | Г.Л. Вольф | Crane load limiter |
| US3310291A (en) * | 1964-11-10 | 1967-03-21 | John H Wiggins | Tension responsive power driven winch |
| US3269560A (en) * | 1964-12-28 | 1966-08-30 | Drott Mfg Corp | Safety control for cranes |
| US3489294A (en) * | 1968-04-25 | 1970-01-13 | Bucyrus Erie Co | Load limit control for hoisting equipment |
-
1970
- 1970-06-02 US US42837A patent/US3658188A/en not_active Expired - Lifetime
-
1971
- 1971-01-12 CA CA102494A patent/CA929896A/en not_active Expired
- 1971-04-19 GB GB2229171A patent/GB1322118A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA929896A (en) | 1973-07-10 |
| US3658188A (en) | 1972-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |