GB1053409A - - Google Patents
Info
- Publication number
- GB1053409A GB1053409A GB1053409DA GB1053409A GB 1053409 A GB1053409 A GB 1053409A GB 1053409D A GB1053409D A GB 1053409DA GB 1053409 A GB1053409 A GB 1053409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boom
- pivoted
- clockwise
- jib
- nov
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
- E02F3/382—Connections to the frame; Supports for booms or arms
- E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
-
- 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
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1,053,409. Slewing mechanism for jib-cranes. STEELFAB Ltd. Nov. 5, 1965 [Nov. 26, 1964], No. 48183/64. Heading B8B. [Also in Division E1 A crane or excavator boom 14 pivoted at 11 on a structure 13 is slewed by hydraulic rams 16, 17 through at least 180 degrees. Cylinders 18, 22 of the rams are pivoted at 19, 23 to the structure 13 and their piston rods 20, 24 are pivoted to a jib-supporting bracket 10 at 21, 25. To slew the boom clockwise from the position shown in Fig. 1, fluid is supplied to chambers 18a, 22b. The ram 16 tends to turn the boom clockwise with an effective lever-arm R1, whilst the ram 17 tends to turn the boom anticlockwise with an effective lever arm R2. Since R1 is greater than R2 the boom rotates clockwise, the limiting position being illustrated in Fig. 3 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU16392/67A AU1639267A (en) | 1967-01-12 | 1967-01-12 | Improvements in or relating to slewing apparatus for cranes or excavating machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1053409A true GB1053409A (en) | 1900-01-01 |
Family
ID=3706308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1053409D Expired GB1053409A (en) | 1967-01-12 |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU1639267A (en) |
GB (1) | GB1053409A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502664A1 (en) * | 1981-03-25 | 1982-10-01 | Valeo | DART DEVICE FOR DRAGUE |
EP0086975A2 (en) * | 1982-02-18 | 1983-08-31 | Deere & Company | Sliding frame with a piston-actuated swing device, particularly for a transversely shiftable backhoe |
-
0
- GB GB1053409D patent/GB1053409A/en not_active Expired
-
1967
- 1967-01-12 AU AU16392/67A patent/AU1639267A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502664A1 (en) * | 1981-03-25 | 1982-10-01 | Valeo | DART DEVICE FOR DRAGUE |
EP0086975A2 (en) * | 1982-02-18 | 1983-08-31 | Deere & Company | Sliding frame with a piston-actuated swing device, particularly for a transversely shiftable backhoe |
EP0086975A3 (en) * | 1982-02-18 | 1983-11-30 | Deere & Company | Sliding frame with a piston-actuated swing device, particularly for a transversely shiftable backhoe |
Also Published As
Publication number | Publication date |
---|---|
AU1639267A (en) | 1968-07-18 |
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