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GB1345362A - Detecting deformations in structures - Google Patents

Detecting deformations in structures

Info

Publication number
GB1345362A
GB1345362A GB2230771A GB2230771A GB1345362A GB 1345362 A GB1345362 A GB 1345362A GB 2230771 A GB2230771 A GB 2230771A GB 2230771 A GB2230771 A GB 2230771A GB 1345362 A GB1345362 A GB 1345362A
Authority
GB
United Kingdom
Prior art keywords
lever
turret
structures
safety
members
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
GB2230771A
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.)
PPM SA
Potain Poclain Materiel PPM SA
Original Assignee
PPM SA
Potain Poclain Materiel PPM SA
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 PPM SA, Potain Poclain Materiel PPM SA filed Critical PPM SA
Publication of GB1345362A publication Critical patent/GB1345362A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
    • G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0071—Specific indicating arrangements, e.g. of overload

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Jib Cranes (AREA)
  • Control Of Turbines (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1345362 Safety devices for jib cranes POTAIN POCLAIN MATERIEL 19 April 1971 [17 March 1970] 22307/71 Heading B8B [Also in Division G1] A luffing, slewing jib crane is provided with a device for detecting excessive mechanical stress in its turret 2 when subjected to overload. The turret 2 has upper and lower members 17, 15 interconnected by a wall 20 which takes up a position such as 20a when distorted under load. Upper element 17 is connected to main body 16 of a safety device, the lower element 15 being connected by a fork 13 to a lever 26 pivoted about an axis 23 defined by bearings 22. The deformation is converted by rotation of an eccentric cam (23), Fig. 4 (not shown), into angular movement of the lever 26. A set of cams 27 integral with the end of the lever 26 actuates control members 28 of contactors 29 controlling various operations and alarm devices.
GB2230771A 1970-03-17 1971-04-19 Detecting deformations in structures Expired GB1345362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7009516A FR2082475A5 (en) 1970-03-17 1970-03-17

Publications (1)

Publication Number Publication Date
GB1345362A true GB1345362A (en) 1974-01-30

Family

ID=9052392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2230771A Expired GB1345362A (en) 1970-03-17 1971-04-19 Detecting deformations in structures

Country Status (5)

Country Link
US (1) US3737888A (en)
DE (1) DE2109229A1 (en)
ES (1) ES389108A1 (en)
FR (1) FR2082475A5 (en)
GB (1) GB1345362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109883683A (en) * 2019-04-04 2019-06-14 王小珍 A kind of lifting machinery metal structure stress-strain test demo system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952879A (en) * 1975-02-14 1976-04-27 Fulton Industries, Inc. Overload control for lifting boom
US4236864A (en) * 1978-11-09 1980-12-02 Raymond Couture Safety control system for the boom of a crane
GB9715293D0 (en) * 1997-07-22 1997-09-24 Street Crane Company Limited Monitor and/or overload means
US7014054B2 (en) * 2002-07-01 2006-03-21 Jlg Industries, Inc. Overturning moment measurement system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091534A (en) * 1932-08-04 1937-08-31 Richard L Templin Deformation recording apparatus
US2812584A (en) * 1954-12-10 1957-11-12 Northrop Aircraft Inc Elongation indicating and controlling mechanism
SU116342A1 (en) * 1958-05-20 1958-11-30 К.А. Шарыгин Crane lifting limiter
US3123814A (en) * 1962-02-09 1964-03-03 Safe load indicating devices for cranes
GB973817A (en) * 1962-07-11 1964-10-28 Stothert & Pitt Ltd Automatic over moment regulator for cranes
US3199685A (en) * 1964-03-02 1965-08-10 Greater Iowa Corp Overload safety device for material handling mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109883683A (en) * 2019-04-04 2019-06-14 王小珍 A kind of lifting machinery metal structure stress-strain test demo system

Also Published As

Publication number Publication date
DE2109229A1 (en) 1971-10-07
FR2082475A5 (en) 1971-12-10
US3737888A (en) 1973-06-05
ES389108A1 (en) 1973-11-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees