GB1358026A - Mass measuring system applied to belt conveyors - Google Patents

Mass measuring system applied to belt conveyors

Info

Publication number
GB1358026A
GB1358026A GB222673A GB222673A GB1358026A GB 1358026 A GB1358026 A GB 1358026A GB 222673 A GB222673 A GB 222673A GB 222673 A GB222673 A GB 222673A GB 1358026 A GB1358026 A GB 1358026A
Authority
GB
United Kingdom
Prior art keywords
stringers
motor
phase
belt
speed
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
GB222673A
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.)
Merrick Scale Manufacturing Co
Original Assignee
Merrick Scale Manufacturing Co
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 Merrick Scale Manufacturing Co filed Critical Merrick Scale Manufacturing Co
Priority to GB222673A priority Critical patent/GB1358026A/en
Publication of GB1358026A publication Critical patent/GB1358026A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/12—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge by controlling the speed of the belt
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/04—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having electrical weight-sensitive devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Control Of Conveyors (AREA)

Abstract

1358026 Measuring mass electrically MERRICK SCALE MFG CO 16 Jan 1973 2226/73 Heading G1N A mass measuring system applied to a belt conveyor comprises a pair of stringers 11 supporting an endless belt conveyor, a pair of eccentrics 13 being rotatably supported at 14 by the stringers, and an electric motor 19 independently supported and connected by a belt 27 to the shaft 14, so that rotation of the shaft 14 and hence of the eccentrics 13, causes vibration of the stringers at a resonant frequency dependent on the load on the conveyor. Two coils 29, 32 are responsive to the vibration of the stringers and the rotation of the motor respectively, and produce signals which are ideally 90 degrees out of phase. The signals are compared in a phase-sensitive network 36 whose output controls an S.C.R. speed controller 37 for the motor 19 to maintain the phase shift and resonance. A tachogenerator 38 measures the motor speed, the output being fed to a potentiometer 40 which also receives a signal indicative of the belt speed, so as to derive by means of an integrator, a measure of load per unit time. Reference is made to Specifications 1161952, 1243743 and 1325859.
GB222673A 1973-01-16 1973-01-16 Mass measuring system applied to belt conveyors Expired GB1358026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB222673A GB1358026A (en) 1973-01-16 1973-01-16 Mass measuring system applied to belt conveyors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB222673A GB1358026A (en) 1973-01-16 1973-01-16 Mass measuring system applied to belt conveyors

Publications (1)

Publication Number Publication Date
GB1358026A true GB1358026A (en) 1974-06-26

Family

ID=9735816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB222673A Expired GB1358026A (en) 1973-01-16 1973-01-16 Mass measuring system applied to belt conveyors

Country Status (1)

Country Link
GB (1) GB1358026A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625805A1 (en) * 1988-01-07 1989-07-13 Pitney Bowes Inc SCALE WITH OSCILLATING PLATE
EP0565740A1 (en) * 1992-04-11 1993-10-20 Carl Schenck Ag Method and apparatus for determining the extraction flow rate of a belt weigher

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625805A1 (en) * 1988-01-07 1989-07-13 Pitney Bowes Inc SCALE WITH OSCILLATING PLATE
GB2213590A (en) * 1988-01-07 1989-08-16 Pitney Bowes Inc Apparatus and method of weighing articles based upon harmonic motion of an article-supporting tray
GB2213590B (en) * 1988-01-07 1992-04-29 Pitney Bowes Inc Apparatus and method of weighing articles based upon harmonic motion
EP0565740A1 (en) * 1992-04-11 1993-10-20 Carl Schenck Ag Method and apparatus for determining the extraction flow rate of a belt weigher

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee