SE8303543D0 - LOADING ARM AND SET TO DETERMINE ONE FROM THE ARM - Google Patents

LOADING ARM AND SET TO DETERMINE ONE FROM THE ARM

Info

Publication number
SE8303543D0
SE8303543D0 SE8303543A SE8303543A SE8303543D0 SE 8303543 D0 SE8303543 D0 SE 8303543D0 SE 8303543 A SE8303543 A SE 8303543A SE 8303543 A SE8303543 A SE 8303543A SE 8303543 D0 SE8303543 D0 SE 8303543D0
Authority
SE
Sweden
Prior art keywords
boom
strain gauges
rod
load
fluid
Prior art date
Application number
SE8303543A
Other languages
Swedish (sv)
Other versions
SE8303543L (en
Inventor
J L Grove
E L Garber
Original Assignee
Jlg Ind Inc
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 Jlg Ind Inc filed Critical Jlg Ind Inc
Publication of SE8303543D0 publication Critical patent/SE8303543D0/en
Publication of SE8303543L publication Critical patent/SE8303543L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01G3/1408—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Strain gauges 18 are attached to the piston rod 12 of fluid motor 10 which supports load-bearing boom 6 for sensing and measuring the state of compression of the rod 12, and hence the load supported by boom 6. Strain gauges 18 are mounted to the external portion of the rod 12 extending between the boom member 6 and the motor cylinder 14, and function to continuously measure the degree of compression in the rod. Further electrical means is disclosed for interpreting the output from the strain gauges as the weight of the load which the boom is lifting. By measuring the mechanical strain in the system instead of the fluid pressure in the cylinder variations in readings caused by the effects of external factors on the fluid are avoided. The piston rod provides a relatively unexposed location for the strain gauges. <IMAGE>
SE8303543A 1982-10-12 1983-06-21 LOADING ARM AND SET TO DETERMINE ONE FROM THE ARM SE8303543L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43392682A 1982-10-12 1982-10-12

Publications (2)

Publication Number Publication Date
SE8303543D0 true SE8303543D0 (en) 1983-06-21
SE8303543L SE8303543L (en) 1984-04-13

Family

ID=23722105

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8303543A SE8303543L (en) 1982-10-12 1983-06-21 LOADING ARM AND SET TO DETERMINE ONE FROM THE ARM

Country Status (10)

Country Link
JP (1) JPS5975124A (en)
AU (1) AU1534983A (en)
BE (1) BE897429A (en)
BR (1) BR8303990A (en)
DE (1) DE3330508A1 (en)
FR (1) FR2534236A1 (en)
GB (1) GB2128760A (en)
IT (1) IT1168968B (en)
NL (1) NL8302510A (en)
SE (1) SE8303543L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160055A (en) * 1991-10-02 1992-11-03 Jlg Industries, Inc. Load moment indicator system
JP3291258B2 (en) * 1998-10-14 2002-06-10 太陽鉄工株式会社 Fluid pressure cylinder device
GB2378171B (en) 2001-06-29 2004-04-14 Arjo Ltd Invalid hoist

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004041C3 (en) * 1970-01-29 1975-10-09 Ludwig Pietzsch overload protection for jib cranes, especially telescopic cranes
US4039084A (en) * 1971-07-06 1977-08-02 Tadano Ironworks Co., Ltd. Safety-guard for a crane
FR2378272A1 (en) * 1977-01-25 1978-08-18 Ferodo Sa DYNAMOMETRIC TORQUE MEASUREMENT DEVICE FOR JACK-CONTROLLED LIFTING ARROW MACHINE
FR2436376A1 (en) * 1978-09-18 1980-04-11 Ferodo Sa DYNAMOMETRIC STRESS CONTROL DEVICE FOR HANDLE BOOM WITH ARTICULATED ARMS
GB2064794B (en) * 1979-11-30 1983-05-11 Derwent Measurement & Control Weighing apparatus

Also Published As

Publication number Publication date
FR2534236A1 (en) 1984-04-13
BE897429A (en) 1983-12-01
BR8303990A (en) 1984-06-12
JPS5975124A (en) 1984-04-27
IT8323243A0 (en) 1983-10-11
SE8303543L (en) 1984-04-13
GB2128760A (en) 1984-05-02
DE3330508A1 (en) 1984-04-12
IT8323243A1 (en) 1985-04-11
IT1168968B (en) 1987-05-20
GB8315791D0 (en) 1983-07-13
NL8302510A (en) 1984-05-01
AU1534983A (en) 1984-04-19

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