US3604684A - Mine hoist with relockable winding drums - Google Patents

Mine hoist with relockable winding drums Download PDF

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Publication number
US3604684A
US3604684A US835691A US3604684DA US3604684A US 3604684 A US3604684 A US 3604684A US 835691 A US835691 A US 835691A US 3604684D A US3604684D A US 3604684DA US 3604684 A US3604684 A US 3604684A
Authority
US
United States
Prior art keywords
disc
clutch
shaft
drum
drums
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
US835691A
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English (en)
Inventor
Einar Eithun
Josef Marchner
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Application granted granted Critical
Publication of US3604684A publication Critical patent/US3604684A/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
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B66B15/06—Drums
    • 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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0166—Winches with multiple drums or with drums with multiple parts of different diameter
    • B66D2700/0175—Winches with multiple drums or with drums with multiple parts of different diameter with adjacent drums mounted on a single shaft with a common coupling member
    • 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

  • ABSTRACT A mine hoist includes a shaft with two drums mounted thereon, one of which is turnable with respect to the shaft. An arrangement is provided for adjusting the relative angular positions of the shaft on the two drums.
  • the movable drum is normally connected to the shaft by a friction clutch which is held in engagement by spring pressure and is released by the operation ofa fluid pressure cylinder.
  • one of the winding drums is fixed to the shaft and the other is rotatable and axially displaceable on the shaft.
  • the rotatable drum can be displaced along the shaft to make contact with a conical friction surface on the other winding drum or on a stationary disc, and in this way be connected to either of these.
  • Both discs may be rotatable and axially displaceable on the shaft between stationary braking discs and a common driving disc attached on the shaft. During the displacement the winding drum can rotate freely on the shaft.
  • the winding drum in large mine hoist may weight 25-100 tons and cables and skips -50 tons. These weights alone and the torque generated by cables and skips even during the switching mean that the structural principles known from excavators, having axially displaceable winding drums, cannot be used or provide any indication of how the problem should be solved in mine hoists.
  • the present invention relates to mine hoists having two skips suspended by cables which are wound in opposite directions onto individual winding drums, axially fixed and arranged on a common shaft, at least one of the drums being rotatable about the shaft and connected to it by a detachable connection which makes possible adjustment of the position of the winding drums in relation to each other and locking of the winding drums at the desired angle to each other.
  • connection is designed as a drum or disc friction clutch which is engaged by spring force and released by at least one lifting cylinder operated by pressure medium.
  • the connection is most favorably designed as a disc clutch having at least one, preferably two friction discs joined to the cable drum and at least one hub firmly attached to the common shaft of the winding drums, said hub supporting clutch units straddling said disc, said units having, on opposite sides of the disc, pads of frictional material, one adjacent each facing side of the disc and axially movable into frictional engagement with said facing sides of the disc, resilient means normally forcing said friction pads into frictional engagement with said disc and a fluid pressure operated piston and cylinder means operable to move said friction pads against said resilient means and away from said clutch disc.
  • the winding drum disc or discs have a limited axial movement and are radially movable.
  • the hub supports at least one clutch disc which projects between the discs of the winding drum so that the number of friction surfaces is doubled.
  • the clutch discs of the drum are annular whereas the clutch discs joined to the hub consist of segments having approximately the same size in circumference as the friction pads on the clutch units.
  • FIG. 1 shows a view of a hoist with driving motor and intermediate gear.
  • FIG. 2 shows on a larger scale the section indicated in FIG. 1 and
  • FIG. 3 a side view of the clutch.
  • FIG. 1 designates a driving motor, 2 a gear, 3 and 4 two winding drums which are arranged on a common shaft 5 which is supported by three bearings 6.
  • the winding drums are provided with outer braking discs 7 and 8 and with braking units 9 and 10 which, during normal operation of the hoist, are operated simultaneously for engagement and disengagement with the discs.
  • the drum 4 is joined to the shaft 5 while the drum 3, by means of discs 11, hubs 12 and bushings l3 and 14 in the hubs 12 on the shaft 5, respectively, is rotatably arranged about the shaft 5 and thus rotatably arranged in relation to the drum 4.
  • annular clutch discs 15 which have a limited axial movement and are radially movable in relation to the drum itself since they rest on a number of rubber bushings 16 on pegs 17 in the annular parts 18 and 19 joined to the drum 3.
  • the axial movement is obtained by sliding on the bushings 16 while the radial movement is obtained due to resilience in the elastic material of the bushings.
  • the radially elastic attachment prevents radial loads of a dangerous magnitude being transferred between the drum 3 and shaft 5 if play exists between the bushings l3 and 14.
  • a hub 20 with a disc 21 is joined to the shaft 5 by means of a key fitting or shrinkage fit 35.
  • the disc 21 supports the clutch units 22 and a number of segment-shaped clutch discs 23 with friction coating, which project in between the clutch discs 15.
  • a spacer 24 having the same thickness as the disc 21 is used to ensure that the units 22 are symmetrically arranged in relation to the clutch discs 23.
  • the clutch units 22, spacer 24 and friction discs 23 are fixed to the disc 21 with bolts 24' and 25.
  • the clutch units are of a type in which friction pads are pressed against a clutch disc with spring force and lifted by an operating cylinder such as shown in Tjernstrom, U.S. Pat. No. 3,1 18,520. Standard units developed for clutch brakes can be used as clutch units, which contributes to reducing the costs of the clutch.
  • a number of units dependent on the magnitude of the torque are placed along the periphery of the disc 21.
  • Pressure medium to lift the friction pads 37 of the clutch units 22 is supplied through the conduit 26, the rotating hydraulic connection 27, channels 28 and 29 in the shaft 5, conduit 30 and distributing pieces 31 and conduits 32 and 33.
  • the clutch operates in the following way: In normal operation the pressure in the operating conduits is equal to atmospheric pressure and the friction pads of the clutch units are pressed by compression springs against the clutch discs in the drum 3 and these discs are pressed against the intermediate friction discs 23.
  • the absence of overpressure in the operating conduit for most of the operating time means that the rotating hydraulic sealing arrangements may be of simple design and, in spite of this, have a very long life.
  • the skip which is suspended from the winding drum 3 is moved to the unloading station, after which pressure medium is supplied to the clutch units 22 so that their friction pads are lifted and the drum 3 is released from the shaft 5.
  • the braking units of the winding drum are now lifted while the braking units of the winding drum 3 remain in position.
  • the skip suspended from the winding drum 4 can be raised or lowered to the desired stopping level, after which the brakes l0 and the clutch in the winding drum 3 are again connected Haulage can now take place from this new stopping level.
  • the hoist is suitably provided with blocking means which prevent the brakes 9 and the connection in the drum 3 from being released simultaneously.
  • the hoist is provided with safety means which automatically connect the clutch if one of the winding drums should reach an impermissible speed during the switchover. The clutch thus serves as an extra safety brake for both the drums during the switchover.
  • Mine hoist comprising a shaft, two individual winding drums, axially fixed on said shaft, at least one of the drums being rotatable about the shaft, detachable connection means between the rotatable drum and the shaft for permitting adjustment of the position of the winding drums in relation to each other and locking of the winding drums at the desired angle to each other, said connection means comprising a friction clutch which is engaged by spring force and at least one lifting cylinder means operated by pressure medium connected to the clutch for releasing it, said clutch being a disc clutch having at least one friction disc joined to thewinding drum for rotation therewith and at least one hub fixedly attached to the shaft of the winding drums, a pair of clutch units supported on said hub and straddling said disc, said units having, on opposite sides of the disc, pads of frictional material, one adjacent each opposite side of the disc and axially movable into frictional engagement with said opposite sides of the disc, resilient means normally forcing said friction pads into frictional engagement with said disc and said cylinder means comprising a fluid pressure operated piston
  • Mine hoist according to claim 1 having spring means suspending the clutch disc in the movable drum so as to allow limited movement of the disc in relation to the drum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
US835691A 1968-06-27 1969-06-23 Mine hoist with relockable winding drums Expired - Lifetime US3604684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8712/68A SE318076B (enrdf_load_stackoverflow) 1968-06-27 1968-06-27

Publications (1)

Publication Number Publication Date
US3604684A true US3604684A (en) 1971-09-14

Family

ID=20274851

Family Applications (1)

Application Number Title Priority Date Filing Date
US835691A Expired - Lifetime US3604684A (en) 1968-06-27 1969-06-23 Mine hoist with relockable winding drums

Country Status (4)

Country Link
US (1) US3604684A (enrdf_load_stackoverflow)
DE (1) DE1931007A1 (enrdf_load_stackoverflow)
GB (1) GB1265556A (enrdf_load_stackoverflow)
SE (1) SE318076B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435209A (en) * 1992-06-26 1995-07-25 Wittur Aufzugteile Gmbh & Co. Drive unit for a hoisting apparatus, in particular for a passenger or freight elevator
CN103274281A (zh) * 2012-12-30 2013-09-04 中信重工机械股份有限公司 一种三轴承座双游动卷筒提升机的主轴装置
US8936232B2 (en) 2011-08-17 2015-01-20 Caterpillar Global Mining Llc Interlock system
CN105858425A (zh) * 2016-05-05 2016-08-17 中信重工机械股份有限公司 一种多绳摩擦式提升机
US11390489B2 (en) * 2018-10-31 2022-07-19 China University Of Mining & Technology, Beijing Mine vertical shaftlifting apparatus, mine vertical shaft lifting system and control method therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528816A1 (fr) * 1982-06-22 1983-12-23 Fives Cail Babcock Dispositif de commande d'un accouplement ou embrayage a dents entre le tambour moteur et le tambour fou d'un treuil de machine d'extraction de mine
FR2689875A1 (fr) * 1992-04-14 1993-10-15 Prudhomme Dominique Treuil réversible.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092669A (en) * 1913-06-12 1914-04-07 Bergen Point Iron Works Hoisting apparatus for operating grab-buckets.
US1767566A (en) * 1928-06-09 1930-06-24 Marmon Motor Car Company Driving clutch
US2366093A (en) * 1941-07-21 1944-12-26 Kelsey Hayes Wheel Co Brake
US2634096A (en) * 1949-06-08 1953-04-07 Hopkinson Austin Hoisting or haulage gear
US2945675A (en) * 1957-10-24 1960-07-19 California Research Corp Drawworks
US3003585A (en) * 1958-07-16 1961-10-10 Andersson Nils Einar Building hoists
US3118520A (en) * 1960-11-28 1964-01-21 Tjernstrom Ove Arrangement for automatic regulation of air-gap and spring force in brakes
US3291450A (en) * 1963-12-19 1966-12-13 Wolff G M B H E Drag-line winch
US3352540A (en) * 1964-07-07 1967-11-14 Wolff Maschinenfabrik Und Eise Drag-line winch

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092669A (en) * 1913-06-12 1914-04-07 Bergen Point Iron Works Hoisting apparatus for operating grab-buckets.
US1767566A (en) * 1928-06-09 1930-06-24 Marmon Motor Car Company Driving clutch
US2366093A (en) * 1941-07-21 1944-12-26 Kelsey Hayes Wheel Co Brake
US2634096A (en) * 1949-06-08 1953-04-07 Hopkinson Austin Hoisting or haulage gear
US2945675A (en) * 1957-10-24 1960-07-19 California Research Corp Drawworks
US3003585A (en) * 1958-07-16 1961-10-10 Andersson Nils Einar Building hoists
US3118520A (en) * 1960-11-28 1964-01-21 Tjernstrom Ove Arrangement for automatic regulation of air-gap and spring force in brakes
US3291450A (en) * 1963-12-19 1966-12-13 Wolff G M B H E Drag-line winch
US3352540A (en) * 1964-07-07 1967-11-14 Wolff Maschinenfabrik Und Eise Drag-line winch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435209A (en) * 1992-06-26 1995-07-25 Wittur Aufzugteile Gmbh & Co. Drive unit for a hoisting apparatus, in particular for a passenger or freight elevator
US8936232B2 (en) 2011-08-17 2015-01-20 Caterpillar Global Mining Llc Interlock system
CN103274281A (zh) * 2012-12-30 2013-09-04 中信重工机械股份有限公司 一种三轴承座双游动卷筒提升机的主轴装置
CN105858425A (zh) * 2016-05-05 2016-08-17 中信重工机械股份有限公司 一种多绳摩擦式提升机
CN105858425B (zh) * 2016-05-05 2017-11-10 中信重工机械股份有限公司 一种多绳摩擦式提升机
US11390489B2 (en) * 2018-10-31 2022-07-19 China University Of Mining & Technology, Beijing Mine vertical shaftlifting apparatus, mine vertical shaft lifting system and control method therefor

Also Published As

Publication number Publication date
DE1931007A1 (de) 1970-09-17
GB1265556A (enrdf_load_stackoverflow) 1972-03-01
SE318076B (enrdf_load_stackoverflow) 1969-12-01

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