GB1029428A - Motor driven chain hoist - Google Patents

Motor driven chain hoist

Info

Publication number
GB1029428A
GB1029428A GB3390363A GB3390363A GB1029428A GB 1029428 A GB1029428 A GB 1029428A GB 3390363 A GB3390363 A GB 3390363A GB 3390363 A GB3390363 A GB 3390363A GB 1029428 A GB1029428 A GB 1029428A
Authority
GB
United Kingdom
Prior art keywords
motor
chain
arm
side plate
brake
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
GB3390363A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1029428A publication Critical patent/GB1029428A/en
Expired legal-status Critical Current

Links

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
    • B66D3/20—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
    • B66D3/22—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing with variable-speed gearings between driving motor and drum or barrel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

1,029,428. Chain hoists. HITACHI Ltd. Aug. 27, 1963 [Aug. 29, 1962 (2)], No. 33903/63. Heading B8B. [Also in Division F2] In an electric chain hoist the frame comprises two side plates 1, 2, Fig. 1, the motor 34 being inserted through a hole in the side-plate 2 for attachment as by through-bolts 49 to the sideplate 1. One end bearing 36 at the driving end of the motor shaft 37 is fitted in a recessed portion 6 of the side plate 1. Reduction gears 50- 54 driving the chain sprockets 67 are arranged on the outer side of the side plate 1 within a bearing casing 4 attached to the side plate 1 carrying some of the bearings 55, 57, 59 for the shafts. A self-sustaining brake (see Division F2) is arranged in the recess 6 of the side plate 1 and is released by rotation of an operating ring 24 which controls the movement of rollers 31 moving over inclined faces 25 to axially release the brake discs 14, 15, 16 against the pressure normally applied by a spring 21. Movement of the ring 24 is effected by movements of the motor switch operating arm 71 controlled from pull cords 73, 74, Fig. 2 (not shown). The arm 71 carries a roller 81 engaging a recessed stirrup 79 attached by a link 28 to the ring 24 and arranged so that movement of the arm 71 in either direction to lift or lower the load causes the brake to release. Chain guides 75, 76 (not shown) arranged on the arm 71 are adapted to be engaged by end-stops on the chain to automatically switch off the motor. The motor 34 also carries a centrifugal brake 40 (see Division F2) which limits the rate of lowering in the event of an electrical failure.
GB3390363A 1962-08-29 1963-08-27 Motor driven chain hoist Expired GB1029428A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3608762 1962-08-29
JP3608862 1962-08-29

Publications (1)

Publication Number Publication Date
GB1029428A true GB1029428A (en) 1966-05-11

Family

ID=26375113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3390363A Expired GB1029428A (en) 1962-08-29 1963-08-27 Motor driven chain hoist

Country Status (1)

Country Link
GB (1) GB1029428A (en)

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