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
Application number
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.)
Publication date
Publication of GB1053409A publication Critical patent/GB1053409A/en
Expired legal-status Critical Current

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).
GB1053409D 1967-01-12 Expired GB1053409A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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