US3735352A - Communication technique for controlling crane operations - Google Patents

Communication technique for controlling crane operations Download PDF

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Publication number
US3735352A
US3735352A US00165296A US3735352DA US3735352A US 3735352 A US3735352 A US 3735352A US 00165296 A US00165296 A US 00165296A US 3735352D A US3735352D A US 3735352DA US 3735352 A US3735352 A US 3735352A
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United States
Prior art keywords
signals
vehicle
station
command
trolley
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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 - Lifetime
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US00165296A
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English (en)
Inventor
L Pease
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Eaton Corp
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Eaton Corp
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Publication date
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Publication of US3735352A publication Critical patent/US3735352A/en
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    • 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
    • B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
    • 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
    • B66C2700/088—Remote control of electric cranes

Definitions

  • the advantages of the present invention are preferably attained by providing a communications system employing a trolley system having an extra conductor in the trolley power rail and sharing the ground conductor between the power and communication systems, together with novel circuitry for transmitting and receiving communications employing photocoupling techniques for noise isolation.
  • Another object of the present invention is to provide communication systems for vehicles, such as stacker cranes and the like, which are substantially unaffected by electrical noise.
  • An additional object of the present invention is to provide communication systems for vehicles, such as stacker cranes and the like, which are compatible with either manual or computerized control.
  • a specific object of the present invention is to provide communication systems for vehicles, such as stacker cranes and the like, employing a trolley system having an extra conductor in the trolley power rail and sharing the ground conductor between the power and communication systems, together with novel circuitry for transmitting and receiving communications employing photocoupling techniques for noise isolation.
  • FIG. 1 is a diagrammatic representation of a communication system embodying the present invention.
  • FIG. 2 is a transverse section through the trolley power rail of the communication system of FIG. 1.
  • FIG. 1 shows a command station 2 and an on-board station 4 coupled by a trolley system 6.
  • the on-board station 4 is mounted on the vehicle to be controlled and is connected, through the trolley system 6, to the command station 2, which may be located in substantially any desired location.
  • each station 2 and 4 has a signal input 8 and 8' which is connected through the light-emitting diode l0 and 10' of a photocoupling unit 12 and 12' to a suitable voltage source 14 and 14'.
  • the phototransistor 16 and 16, of the photocoupling unit 12 and 12' passes signals to the base of a transistor 18 and 18' which triggers the lightemitting diode 20 and 20 of a second photocoupling unit 22 and 22' which causes phototransistor 24 and 24' to apply signals to the output 26 and 26'.
  • the collector of transistor 18 of the command station 2 is also connected to conductor 28 of the trolley system 6, while the collector of transistor 18 of the on-board station 4 is connected to brush 30 which slidably engages conductor 28, as more fully described below.
  • the grounded emitter of transistor 18 of the command station 2 is connected to conductor 32 of the trolley system 6, while the grounded emitter of transistor 18 of the on-board station 4 is connected to brush 34 of the trolley system 6 which slidably engages conductor 32.
  • FIG. 2 is a transverse section through the power rail, indicated generally at 40, of the trolley system 6.
  • the power rail 40 comprises an elongated, hollow-duct 42 formed of electrically insulating material and has five electrically conductive strips 28, 32, 44, 46, and 48 spaced about the interior of the duct 42 and extending longitudinally therein.
  • the duct 42 is disposed adjacent and parallel to all possible routes of the controlled vehicle.
  • a trolley 50 travels within the duct 42 on wheels 52 and is rigidly connected to the controlled vehicle, not shown, by a hollow pigtail 54 which projects through a slot 56 extending along one side of the duct 42.
  • the trolley 50 carries a plurality of electrically conductive brushes 30, 34, 58, 60, and 62 which are resiliently urged into electrical contact with the strips 28, 32, 44, 46, and 48 by suitable means, such as springs 64.
  • Each of the brushes 30, 34, 58, 60, and 62 is connected to a respective conductive wire 66 which passes through trolley 50 and pigtail 54 to appropriate components within the controlled vehicle.
  • strips 44, 46, and 48 of power rail 40 of the trolley system 6 each carry electrical power of a respective phase which serves to energize the motors to propel and actuate the controlled vehicle.
  • conductive strip 28 of power rail 40 provides electrical connection between the command station 2 and on-board station 4 of the communication system
  • vehicle strip 32 provides ground return for both the power and communication systems.
  • Command signals for the controlled vehicle such as START, STOP, FORWARD, REVERSE, RAISE, LOWER, rate of speed, etc., are supplied to input 8 of the command station 2 and may be originated from either a manual control panel or a suitable computer.
  • the signals applied to input 8 cause photodiode 10 to emit light which causes phototransistor 16 to conduct and this, in turn, causes transistor 18 to conduct.
  • the signals passed by transistor 18 will be applied directly to photodiode 20 and will also be applied through conductive strip 28 and brush 30 of the trolley system 6 to photodiode 20', causing both of the photodiodes 20 and 20' to emit light.
  • both phototransistors 24 and 24 will pass the command signals.
  • Phototransistor 24 will pass the command signals to output 26' of the on-board station 4 where they will be applied to the appropriate components of the controlled vehicle to cause the vehicle to execute the commands.
  • Signals may be applied to input 8 of the on-board station 4 by any appropriate sensor devices carried by the controlled vehicle to indicate the condition and location of the controlled vehicle. These signals will be transmitted by the on-board station 4 and will be passed through trolley system 6 and applied to output 26 of the command station, in substantially the manner described above, and these signals may then be passed to the computer logic or to appropriate indicators on the manual control panel. It will be seen that, although the trolley system 6 is exposed to electrical noise, the photocoupling units 12, 12', 22 and 22 serve to completely isolate such noise from the input and output circuits.
  • a communication system for mobile vehicles comprising:
  • a command station having an input circuit for transmitting command signals to said vehicle and an output circuit for receiving sensor signals from said vehicle,
  • an on-board station mounted on said vehicle and having an output circuit for receiving command signals from said command station and an input circuit for transmitting sensor signals to said command station,
  • a trolley system extending adjacent and parallel to desired routes of said vehicle and serving to transmit driving power to said vehicle and to electrically connect and carry said signals between said command station and said on-board station, and
  • photocoupling means communicating signals between said command station and said on-board station by transmitting signals to and receiving signals from said trolley system while electrically isolating the input and output circuits of said stations from said trolley system.
  • command station comprises:
  • a first photocoupling unit including a first photodiode connected to receive signals from said input means andserving to emit light signals indicative of the signals received from said input means, and a first phototransistor optically coupled to said first photodiode and serving to pass electrical signals indicative of said light signals;
  • a transistor connected to said first phototransistor and serving to pass said electrical signals to said trolley system;
  • a second photocoupling unit including a second photodiode connected to receive said electrical signals from said trolley system and to emit optical signals indicative of said electrical signals, and a second phototransistor optically coupled to said second photodiode and serving to pass electrical output signals indicative of said optical signals;
  • output means connected to receive and pass said electrical output signals.
  • said on-board station is substantially identical to said command station in circuit operation.
  • trolley system comprises:
  • a power rail having an elongated hollow duct composed of electrically insulating material and formed with a slot extending longitudinally along one side thereof;
  • a trolley movable within said power rail and having a hollow pigtail extending through said slot of said power rail and connected to said vehicle,
  • three of said five conductive strips each carry electrical power of a respective phase for energizing the motor of said vehicle
  • the fourth of said five conductive strips provides electrical connection between said command station and said on-board station for transmission of communications therebetween
  • the fifth of said five conductive strips is a ground return line common to the power system of said vehicle and to said communication system.
  • a communication system for mobile vehicles comprising:
  • a command station having an input circuit for transmitting command signals to said vehicle and an output circuit for receiving sensor signals from said vehicle,

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
US00165296A 1971-07-22 1971-07-22 Communication technique for controlling crane operations Expired - Lifetime US3735352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16529671A 1971-07-22 1971-07-22

Publications (1)

Publication Number Publication Date
US3735352A true US3735352A (en) 1973-05-22

Family

ID=22598321

Family Applications (1)

Application Number Title Priority Date Filing Date
US00165296A Expired - Lifetime US3735352A (en) 1971-07-22 1971-07-22 Communication technique for controlling crane operations

Country Status (6)

Country Link
US (1) US3735352A (it)
JP (1) JPS5430171B1 (it)
DE (1) DE2235087A1 (it)
FR (1) FR2146332B1 (it)
GB (1) GB1384558A (it)
IT (1) IT963210B (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065963A (en) * 1988-09-01 1991-11-19 Daifuku Co., Ltd. Transporting train travel control system
US6244015B1 (en) * 1997-08-11 2001-06-12 Kabushiki Kaisha Toshiba Method of assembling plant
US20060243881A1 (en) * 2005-04-28 2006-11-02 Mhe Technologies, Inc. Laser control system
US10644753B2 (en) 2013-08-06 2020-05-05 Sew-Eurodrive Gmbh & Co. Kg Method for producing, especially configuring, a system, including a contact wire and an apparatus, and device for carrying out the method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115092818B (zh) * 2022-05-27 2025-01-28 浙江西图盟数字科技有限公司 一种输送吊具控制设备、方法及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315176A (en) * 1963-11-29 1967-04-18 Texas Instruments Inc Isolated differential amplifier
US3552692A (en) * 1968-08-09 1971-01-05 Dashaveyor Co Railway control system
US3594572A (en) * 1969-04-10 1971-07-20 Dashaveyor Co Wayside control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315176A (en) * 1963-11-29 1967-04-18 Texas Instruments Inc Isolated differential amplifier
US3552692A (en) * 1968-08-09 1971-01-05 Dashaveyor Co Railway control system
US3594572A (en) * 1969-04-10 1971-07-20 Dashaveyor Co Wayside control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin Vol. 13, No. 3 Page 680 August, 1970 Circuit Condition Indication Cary et al. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065963A (en) * 1988-09-01 1991-11-19 Daifuku Co., Ltd. Transporting train travel control system
US6244015B1 (en) * 1997-08-11 2001-06-12 Kabushiki Kaisha Toshiba Method of assembling plant
US20060243881A1 (en) * 2005-04-28 2006-11-02 Mhe Technologies, Inc. Laser control system
US7542680B2 (en) 2005-04-28 2009-06-02 Mhe Technologies, Inc. Laser control system
US10644753B2 (en) 2013-08-06 2020-05-05 Sew-Eurodrive Gmbh & Co. Kg Method for producing, especially configuring, a system, including a contact wire and an apparatus, and device for carrying out the method

Also Published As

Publication number Publication date
FR2146332B1 (it) 1976-05-14
JPS5430171B1 (it) 1979-09-28
IT963210B (it) 1974-01-10
FR2146332A1 (it) 1973-03-02
GB1384558A (en) 1975-02-19
DE2235087A1 (de) 1973-02-01

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