GB1033200A - Overhoist limit device for cranes - Google Patents

Overhoist limit device for cranes

Info

Publication number
GB1033200A
GB1033200A GB4817363A GB4817363A GB1033200A GB 1033200 A GB1033200 A GB 1033200A GB 4817363 A GB4817363 A GB 4817363A GB 4817363 A GB4817363 A GB 4817363A GB 1033200 A GB1033200 A GB 1033200A
Authority
GB
United Kingdom
Prior art keywords
hoist
lever
jib
drive
block
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
GB4817363A
Inventor
Terence Stanley Cottle
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.)
Stothert and Pitt Ltd
Original Assignee
Stothert and Pitt 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 Stothert and Pitt Ltd filed Critical Stothert and Pitt Ltd
Priority to GB4817363A priority Critical patent/GB1033200A/en
Priority to NO155846A priority patent/NO117200B/no
Priority to DE19641431118 priority patent/DE1431118A1/en
Priority to SE14702/64A priority patent/SE301368B/xx
Priority to DK598464A priority patent/DK113802B/en
Publication of GB1033200A publication Critical patent/GB1033200A/en
Expired legal-status Critical Current

Links

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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • 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
    • B66C23/06—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 with jibs mounted for jibbing or luffing movements
    • B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • 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
    • B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

1,033,200. Overhoist prevention devices for jib cranes. STOTHERT & PITT Ltd. Nov. 2, 1964 [Dec. 6, 1963], No. 48173/63. Heading B8B. An over hoist limit device connected to the hydraulically driven hoist barrel of a luffing jib crane is arranged to stop the joist drive when the terminal fittings of the hoist rope reach a predetermined position beneath the jib nose and to start the hoist drive automatically in the lowering direction if the jib is subsequently luffed out. As shown, the hoist drum H drives a rotatable screw shaft 4 which is in engagement with a nut 1 in a guide 5. A lever 9 is connected at one end to a cable 14 which, when moved in the direction X against the action of a spring 17, actuates the hoist control to stop the hoist drive. The lever 9 is pivoted at 8<SP>1</SP> to a block 8 mounted in a guide 7, the position of the block along the guide being determined by the angular position of the jib J. One arm of a bellcrank lever 11 is connected by a link 10 to the block 8 and the other arm is connected by a link 24 to a lever 23 secured to a shaft 21 which extends through a bore in a fixed pin 20 pivotally supporting the jib and which is provided with a lever 22 secured to a bracket 22<SP>1</SP> on the jib. In operation, the hoist drum H rotates in the " hoist " direction until the nut 1 engages a roller 13 on the lever 9 and causes the lever to pull the cable 14 to stop the hoist drive. Subsequent luffing out of the jib causes the block 8 to move to the left causing the lever 9 to pivot about the roller 13, which is in contact with the nut 1, in an anticlockwise direction. This causes the inner member of the cable 14 to be pulled to the right causing the hoist drive to move through the neutral position to a " lower " direction.
GB4817363A 1963-12-05 1963-12-05 Overhoist limit device for cranes Expired GB1033200A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4817363A GB1033200A (en) 1963-12-05 1963-12-05 Overhoist limit device for cranes
NO155846A NO117200B (en) 1963-12-05 1964-12-03
DE19641431118 DE1431118A1 (en) 1963-12-05 1964-12-04 Stroke limiting device for cranes
SE14702/64A SE301368B (en) 1963-12-05 1964-12-04
DK598464A DK113802B (en) 1963-12-05 1964-12-04 Outrigger crane with a control mechanism for limiting the lifting height.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4817363A GB1033200A (en) 1963-12-05 1963-12-05 Overhoist limit device for cranes

Publications (1)

Publication Number Publication Date
GB1033200A true GB1033200A (en) 1966-06-15

Family

ID=10447650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4817363A Expired GB1033200A (en) 1963-12-05 1963-12-05 Overhoist limit device for cranes

Country Status (3)

Country Link
DE (1) DE1431118A1 (en)
DK (1) DK113802B (en)
GB (1) GB1033200A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112374396A (en) * 2020-11-14 2021-02-19 徐州长航科技有限公司 Height limiter with protection structure
CN114057112A (en) * 2020-08-03 2022-02-18 河南华工实业集团有限公司 Special crane for hoisting fermentation tank of winery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057112A (en) * 2020-08-03 2022-02-18 河南华工实业集团有限公司 Special crane for hoisting fermentation tank of winery
CN112374396A (en) * 2020-11-14 2021-02-19 徐州长航科技有限公司 Height limiter with protection structure

Also Published As

Publication number Publication date
DE1431118A1 (en) 1969-06-26
DK113802B (en) 1969-04-28

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