US3494594A - Drive for boom mounted hoist cable - Google Patents

Drive for boom mounted hoist cable Download PDF

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Publication number
US3494594A
US3494594A US695440A US3494594DA US3494594A US 3494594 A US3494594 A US 3494594A US 695440 A US695440 A US 695440A US 3494594D A US3494594D A US 3494594DA US 3494594 A US3494594 A US 3494594A
Authority
US
United States
Prior art keywords
boom
drum
drive
cable
hoist cable
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 - Lifetime
Application number
US695440A
Other languages
English (en)
Inventor
Granville Woolman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baldwin Lima Hamilton Corp
Original Assignee
Baldwin Lima Hamilton Corp
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.)
Filing date
Publication date
Application filed by Baldwin Lima Hamilton Corp filed Critical Baldwin Lima Hamilton Corp
Application granted granted Critical
Publication of US3494594A publication Critical patent/US3494594A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum

Definitions

  • the primary aim of the invention is to provide a boom cable drive that does not tension or slacken the cable as an incident to swinging the boom up and down. As a result, the danger of inadvertently snapping the cable upon powered tilting of the boom is avoided.
  • FIGURE 1 is a side elevation of a crane embodying the invention.
  • FIG. 2 is an enlarged fragmentary section taken approximately along the line 2--2 of FIG. l,
  • FIG. l a selfpropelled crane embodying the invention and including a chassis 11 supported on ground wheels 12 and carrying an operators station 13 and a power plant 14.
  • the crane structure itself includes a turntable 15 mounted on the chassis 11 for rotation about a vertical axis, and a telescoping boom 16 mounted on the turntable 15 for tilting movement about a horizontal axis 17.
  • the boom 16 includes a shipper 18 and an extension 19 carrying at its outer end a pulley assembly 21 lwhich guides a cable 22 that supports a hook block 23.
  • the boom is extended and retracted by an actuator (not shown) within the shipper 18 and its extension 19.
  • the boom is elevated and lowered by a double-acting actuator 24.
  • the cable 22 is payed out and wound in by a motor assembly 26.
  • the turntable 15 includes a base 27, enclosing a motor (not shown) for rotating the turntable, and a pair of spaced generally vertical support plates 28 and 29 mounted on the base 27.
  • the lower end of the boom 16 is positioned between the plates 28, 29 and provided with stub shafts 31 and 32 journalled in the 3,494,594 Patented Feb. 10, 1970 ICC plates and supporting both a cable drum 33 and the motor assembly 26 which is drivingly coupled to the drum.
  • the plates 28, 29 are of double-walled, box-like construction for strength and rigidity
  • the rear or lower end of the boom shipper 18 is formed of plates 34 welded together to form a box-like enclosure 4for the drum 33 on which the cable 22 is wound.
  • the stub shafts 31, 32 are made up of inner and outer annular parts 36 and 37, respectively, bolted to the boom plates 34,
  • the outer stub shaft parts 37 are fitted in sleeve bearings 38 mounted in the support plates 28, 29 so as to define the axis 17 for the boom.
  • the drum 33 is journalled in bearings 41 which are set in the inner ends of the stub shaft parts 36 so that the axis of the lboom 16 and the drum 33 coincide.
  • a cover plate 42 closes lthe outer end of the annular stub shaft 31, and the stub ⁇ shaft 32 is formed with a radial flange portion 43 positioned outwardly of the adjacent support plate 29 and carrying the motor assembly 26.
  • the motor assembly 26 includes a mounting plate 44 which is fitted in and bolted to the flange portion 43.
  • a bearing 45 is set in the mounting plate 44 substantially concentric with the bearings 41.
  • a drive shaft 46 extends through the drum 33 and is secured by splines 47 at one end to the drum and, at the other end, is journalled by the bearing 45 by being fitted in splined engagement with a motor output member 48 set in the bearing 45.
  • the shaft 46 is held against endwise movement by a snap ring 49 that is locked in position by an end plate 51.
  • annular stub shafts 31, 32 provides a convenient and economical way of journalling the boom 16 and the drum 33 on coinciding axes.
  • the mounting plate 44 assures that the output member 48 of the mo tor assembly 2-6 remains properly alined with the other operating elements of the assembly, and the long drive shaft 46 minimizes the effect of any slight misalinement between the drum 33 and the motor assembly 26,
  • a crane comprising, a base, a pair of spaced generally vertical support plates on said base, a boom having its lower end positioned between said plates, said boom having a pair of oppositely extending stub shafts fixed to the boom and pivoted in said support plates so as to provide a generally horizontal axis for the boom, a cable drum journalled in said lower end of said boom on said horizontal axis, one of said stub shafts having a radial flange portion positioned outwardly of the support plate in which it is pivoted, and a motor assembly for driving said drum fixed to said flange portion and drivingly coupled to said drum.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
US695440A 1968-01-03 1968-01-03 Drive for boom mounted hoist cable Expired - Lifetime US3494594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69544068A 1968-01-03 1968-01-03

Publications (1)

Publication Number Publication Date
US3494594A true US3494594A (en) 1970-02-10

Family

ID=24792980

Family Applications (1)

Application Number Title Priority Date Filing Date
US695440A Expired - Lifetime US3494594A (en) 1968-01-03 1968-01-03 Drive for boom mounted hoist cable

Country Status (7)

Country Link
US (1) US3494594A (ja)
BE (1) BE726219A (ja)
DE (1) DE1900288A1 (ja)
FR (1) FR1601618A (ja)
GB (1) GB1183803A (ja)
NL (1) NL6900060A (ja)
SE (1) SE350008B (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270899A (en) * 1964-04-17 1966-09-06 Baldwin Lima Hamilton Corp Load handling vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270899A (en) * 1964-04-17 1966-09-06 Baldwin Lima Hamilton Corp Load handling vehicle

Also Published As

Publication number Publication date
BE726219A (ja) 1969-05-29
NL6900060A (ja) 1969-07-07
DE1900288A1 (de) 1969-08-21
FR1601618A (ja) 1970-09-07
SE350008B (ja) 1972-10-16
GB1183803A (en) 1970-03-11

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