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GB1198199A - Braking Equipment for Hoisting Gear Electric Motors - Google Patents

Braking Equipment for Hoisting Gear Electric Motors

Info

Publication number
GB1198199A
GB1198199A GB4147968A GB4147968A GB1198199A GB 1198199 A GB1198199 A GB 1198199A GB 4147968 A GB4147968 A GB 4147968A GB 4147968 A GB4147968 A GB 4147968A GB 1198199 A GB1198199 A GB 1198199A
Authority
GB
United Kingdom
Prior art keywords
motor
speed
torque
rotor
relay
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
GB4147968A
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.)
HILGERS AG
Original Assignee
HILGERS AG
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
Priority claimed from DE19671531197 external-priority patent/DE1531197A1/en
Priority claimed from DE19681556777 external-priority patent/DE1556777A1/en
Priority claimed from DE19681556778 external-priority patent/DE1556778A1/en
Application filed by HILGERS AG filed Critical HILGERS AG
Publication of GB1198199A publication Critical patent/GB1198199A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/23—Circuits for controlling the lowering of the load
    • B66C13/26—Circuits for controlling the lowering of the load by AC motors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/14—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices
    • G05F1/16—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
    • G05F1/20—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/24—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using bucking or boosting transformers as final control devices
    • G05F1/26—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using bucking or boosting transformers as final control devices combined with discharge tubes or semiconductor devices
    • G05F1/30—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using bucking or boosting transformers as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/40—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with AC motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

1,198,199. Control of A.C. motors. HILGERS A.G. 30 Aug., 1968 [2 Sept., 1967; 8 March, 1968 ; 16 March, 1968], No. 41479/68. Heading H2J. [Also in Division G3] An induction motor ml is associated with a brake-release motor sl and has rotor resistances 1r1 which are switched out in steps by contactors 1c3-1c7 as a controller is moved to successive positions in a hoisting direction. In the first lowering position of the controller, the motor exerts a small hoisting torque but is over driven by the load. A speed-responsive device 1u1 responds to rotor voltage to control contactor 1c8 whereby the rotor resistance is varied at, intervals to stabilize the downward speed. At further lowering positions, contactors 1c4-1c6 are opened in succession to develop lower reverse torque and a higher rate of speed. Finally the motor m1 is reversed to provide a positive downward torque. A thyristor regulator Th is connected to the motor s1 and has a manually-regulated resistor 1 in series with a resistor 2 which is shunted by contacts 3 of a relay 4. This relay is energized by a rectifier 5 in series with a switch 17 which provides a pulse at each revolution of the hoisting motor to open the contacts 3. A signalling device 10 gives an indication of the speed of the motor ml. In another arrangement, the motor m1 develops a torque in the required direction of movement of the load under all operating conditions. A transformer is connected between the rotor of the motor m1 and the stator of the motor s1, so that, as the speed of the load increases, the braking action also increases, Fig. 4 (not shown). The speed-responsive circuit 1u1 may comprise a D.C. amplifier comprising a transistor and having its input connected to the slip-rings of the hoist motor through a transformer and rectifier as well as a voltage divider and a Zener diode. The output side of the amplifier is connected through another Zener diode to a relay which controls the contactor 1c8, Fig. 5 (not shown). The brake release is of the ball-screw-spindle type.
GB4147968A 1967-09-02 1968-08-30 Braking Equipment for Hoisting Gear Electric Motors Expired GB1198199A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19671531197 DE1531197A1 (en) 1967-09-02 1967-09-02 Brake arrangement for the asynchronous motor of a hoist
CH36968A CH471498A (en) 1967-09-02 1968-01-08 Circuit arrangement on a transformer to limit its current
DE19681556777 DE1556777A1 (en) 1967-09-02 1968-03-08 Brake arrangement for the hoist motor of a construction crane
DE19681556778 DE1556778A1 (en) 1967-09-02 1968-03-16 Brake arrangement for the creep speed of the asynchronous motor of a hoist

Publications (1)

Publication Number Publication Date
GB1198199A true GB1198199A (en) 1970-07-08

Family

ID=27427849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4147968A Expired GB1198199A (en) 1967-09-02 1968-08-30 Braking Equipment for Hoisting Gear Electric Motors

Country Status (4)

Country Link
CH (2) CH471498A (en)
DE (1) DE1900470A1 (en)
FR (1) FR1584419A (en)
GB (1) GB1198199A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2283532C2 (en) * 2004-06-07 2006-09-10 Открытое Акционерное Общество "Мариупольский Металлургический Комбинат Им. Ильича" Device for braking electromechanical drive of hoisting crane trolley
RU2285326C2 (en) * 2004-06-07 2006-10-10 Открытое Акционерное Общество "Мариупольский Металлургический Комбинат Им. Ильича" Braking device for electromechanical drive of lifting crane bridge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448038B (en) * 1985-05-23 1987-01-12 Flaekt Ab PROCEDURE AND DEVICE FOR CONTROLING THE CONNECTION TIME FOR EACH AND ONE OF TWO OPPOSED, SINCE BETWEEN PARALLEL CONNECTIONS, POWER PASSAGE IN ONLY ONE DIRECTION ALLOWED, ORGANIZING THE MAGNETIZATION CURRENT THROUGH A TRANS
DE3530565C2 (en) * 1985-08-27 2002-03-07 Rockinger Spezial Fab Joh Longitudinal force support of the coupling body of a trailer coupling
USD337524S (en) 1991-06-25 1993-07-20 Colgate-Palmolive Company Bottle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2283532C2 (en) * 2004-06-07 2006-09-10 Открытое Акционерное Общество "Мариупольский Металлургический Комбинат Им. Ильича" Device for braking electromechanical drive of hoisting crane trolley
RU2285326C2 (en) * 2004-06-07 2006-10-10 Открытое Акционерное Общество "Мариупольский Металлургический Комбинат Им. Ильича" Braking device for electromechanical drive of lifting crane bridge

Also Published As

Publication number Publication date
FR1584419A (en) 1969-12-19
CH471498A (en) 1969-04-15
CH471493A (en) 1969-04-15
DE1900470A1 (en) 1969-07-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees