US3504891A - Hoist brake - Google Patents

Hoist brake Download PDF

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Publication number
US3504891A
US3504891A US797637A US3504891DA US3504891A US 3504891 A US3504891 A US 3504891A US 797637 A US797637 A US 797637A US 3504891D A US3504891D A US 3504891DA US 3504891 A US3504891 A US 3504891A
Authority
US
United States
Prior art keywords
hoist
brake
drum
cable
load
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
US797637A
Other languages
English (en)
Inventor
Otmar M Ulbing
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of US3504891A publication Critical patent/US3504891A/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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/02—Hoists or accessories for hoists
    • B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
    • B66D2700/035—Fluid operated braking devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S254/00—Implements or apparatus for applying pushing or pulling force
    • Y10S254/901—Antifriction means for cable pulling drum

Definitions

  • FIG. 1 is a cross-sectional, elevational view of the hoist according to the invention less a portion of the trolley support structure;
  • FIG. 2 is a plan view of the hoist and its trolley support structure, having a portion of the trolley beam and hoist housing cut away;
  • diaphragm 25A which is exposed to the same pressure as is in the balancing chamber 28, will flex toward bar 24, as shown in FIG. A.
  • diaphragm A lifts the corner of the end cap 3 relative to the bar 24, thereby displacing bar 24 and push rod 33 relative to the end cap 3, which actuates brake cam 37, thus engaging the brake by moving shoes 36 outwardly to lock the drum 7 against which they move, as best seen in FIG. 1, against rotation.
  • This chain-reaction linkage is shown in FIG. 4.
  • the pendant control In order to release the brake the pendant control must be moved to the exhaust position so as to depressurize the balancing chamber 28 and pressure chamber 27. The operation can then be re-started when a proper load is secured to the cable 14.
  • Second embodiment-FIGS. 6 to 8 The second embodiment shown in FIGS. 6 to 8 uses a positive-lock type of brake means which is operative in only one direction of rotation of the drum 7 as compared to the shoe-type brake means shown in the first embodiment.
  • the operating means for the brake of the second embodiment is identical to that of the first embodiment.
  • said operating linkage is operative to apply said brake means to hold said drum against movement when said frame is lifted relative to said support by said pneumatic actuator.
  • said support is a horizontal bar having one end resiliently mounted in an end of said frame and the other end urged downwardly relative to said frame by said pneumatic actuator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
US797637A 1969-02-07 1969-02-07 Hoist brake Expired - Lifetime US3504891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79763769A 1969-02-07 1969-02-07

Publications (1)

Publication Number Publication Date
US3504891A true US3504891A (en) 1970-04-07

Family

ID=25171397

Family Applications (1)

Application Number Title Priority Date Filing Date
US797637A Expired - Lifetime US3504891A (en) 1969-02-07 1969-02-07 Hoist brake

Country Status (6)

Country Link
US (1) US3504891A (en, 2012)
BE (1) BE739989A (en, 2012)
DE (1) DE2003837A1 (en, 2012)
DK (1) DK128201B (en, 2012)
FR (1) FR2030743A5 (en, 2012)
SE (1) SE366719B (en, 2012)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003016A1 (en) * 1981-03-03 1982-09-16 Oy Valmet Safety device for lowering persons and loads
USRE31810E (en) * 1980-01-25 1985-01-22 Ag-Bag Corporation Agricultural bag loading apparatus braking mechanism
US4504023A (en) * 1984-05-23 1985-03-12 The United States Of America As Represented By The United States Department Of Energy Apparatus producing constant cable tension for intermittent demand
US5553832A (en) * 1993-03-12 1996-09-10 Knight Industries, Inc. Safety device for an air balancing hoist

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838674C2 (de) * 1998-08-20 2000-12-14 Mannesmann Ag Winde
DE10127238C1 (de) * 2001-05-28 2003-01-16 Demag Cranes & Components Gmbh Einrichtung zur Erfassung einer Seilbewegung für ein Hebezeug, insbesondere für einen pneumatisch betriebenen Seilbalancer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082633A (en) * 1935-08-23 1937-06-01 Cameron Machine Co Brake mechanism
US3260508A (en) * 1963-10-14 1966-07-12 Edgar R Powell Balancing hoist
US3261589A (en) * 1964-03-02 1966-07-19 Programmed & Remote Syst Corp Safety device for telescoping tubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082633A (en) * 1935-08-23 1937-06-01 Cameron Machine Co Brake mechanism
US3260508A (en) * 1963-10-14 1966-07-12 Edgar R Powell Balancing hoist
US3261589A (en) * 1964-03-02 1966-07-19 Programmed & Remote Syst Corp Safety device for telescoping tubes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31810E (en) * 1980-01-25 1985-01-22 Ag-Bag Corporation Agricultural bag loading apparatus braking mechanism
WO1982003016A1 (en) * 1981-03-03 1982-09-16 Oy Valmet Safety device for lowering persons and loads
US4452430A (en) * 1981-03-03 1984-06-05 Kankkunen Matti K Safety device for lowering persons and loads
US4504023A (en) * 1984-05-23 1985-03-12 The United States Of America As Represented By The United States Department Of Energy Apparatus producing constant cable tension for intermittent demand
US5553832A (en) * 1993-03-12 1996-09-10 Knight Industries, Inc. Safety device for an air balancing hoist

Also Published As

Publication number Publication date
DE2003837A1 (de) 1970-08-06
FR2030743A5 (en, 2012) 1970-11-13
SE366719B (en, 2012) 1974-05-06
BE739989A (en, 2012) 1970-03-16
DK128201B (da) 1974-03-18

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