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WO2008151744A1 - Agencement, module et procédé pour le fonctionnement sûr d'une installation - Google Patents

Agencement, module et procédé pour le fonctionnement sûr d'une installation Download PDF

Info

Publication number
WO2008151744A1
WO2008151744A1 PCT/EP2008/004427 EP2008004427W WO2008151744A1 WO 2008151744 A1 WO2008151744 A1 WO 2008151744A1 EP 2008004427 W EP2008004427 W EP 2008004427W WO 2008151744 A1 WO2008151744 A1 WO 2008151744A1
Authority
WO
WIPO (PCT)
Prior art keywords
drives
brake
hoist
module
drive
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.)
Ceased
Application number
PCT/EP2008/004427
Other languages
German (de)
English (en)
Inventor
Oliver Jäger
Helmut Keller
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
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 SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Priority to EP08758988.3A priority Critical patent/EP2160349B1/fr
Priority to CN2008800199569A priority patent/CN101679008B/zh
Publication of WO2008151744A1 publication Critical patent/WO2008151744A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear

Definitions

  • the present invention relates to an arrangement, a module and a method for safe operation of a plant.
  • Lifting hoists generally involve the risk of uncontrolled lowering of lifted loads due to technical or human failure. This results in a risk to the persons or objects underneath.
  • a hoist is known in which the lowering of the load is stopped as soon as a maximum speed is exceeded.
  • a pawl is provided on the cable drum, which stops the drum due to their inertia, as soon as the previously selected maximum speed is reached.
  • a safety control of a motor-driven cable drum is known.
  • the rotational speed of the driving motor is determined on the driving side by means of a pulse generator, on the driving side, the rotational speed of the cable drum is also determined by a pulse generator.
  • the two pulser signals are compared by a logic circuit. If an irregularity occurs between the two signals of the pulse generator, the control circuit triggers a brake, which prevents the uncontrolled lowering of the load.
  • hoists are designed for network operation of the motors used. A soft start or slow braking to bring the load smoothly in a defined position, are not provided. From DE 90 13 918 U1 a hoist is known, in which according to Figure 1, only a single motor 35 is present, in the failure of an operation is no longer feasible. According to the local figure 2 there is a power source 53 which supplies two parallel-connected motors, whose respective motor currents are detected and from a
  • Monitoring device 49a are compared, wherein after detecting a difference, the safety brakes are activated for all engines. The speeds are not recorded.
  • the invention is therefore based on the object to increase the safety of facilities.
  • the object is achieved in the arrangement according to claim 1, in the module according to the in claim 10 and in the method according to the features indicated in claim 12.
  • a single inverter comprising a control unit, supplies at least two drives
  • each drive comprises a motor, a brake and at least one sensor for detecting a physical state variable of the drive, in particular an angle sensor,
  • the drives are mechanically coupled to each other such that in case of failure of a drive, the other or the other parallel drives take over the torque generation, wherein the sensor signal of the first drive and the further drive or of the further drives are also forwarded to a module which contains means for analyzing the sensor signals for generating an output signal,
  • the inverter comprises means for generating a brake drive signal
  • the output signal and the Bremsenan Kunststoffsignal a network of controllable switching elements, in particular contactors are supplied, which is designed such that the power supply to the motors is releasable or interruptible and that the brakes can be activated or deactivated, in particular energized or de-energized, are.
  • the advantage here is that a hoist with a redundant drive system is executable. As a result, a high level of security against uncontrolled lowering can be achieved in the hoist. Due to the redundancy and the regular tests a controlled lowering is possible even in case of failure. Thus even demanding safety regulations can be fulfilled.
  • the speed, the output torque or another physical state variable of the drives are comparable with each other, which, for example, allows monitoring for certain specific error cases. In an example executed monitoring of the rotational speeds is thus monitored for breakage of the jointly driven shaft.
  • a shaft is driven jointly by all drives for mechanical coupling.
  • the advantage here is that the safety of the hoist is improved by redundant drives.
  • the individual drives are designed in terms of their performance and size so that the safety of the hoist is not impaired in case of failure of a single drive.
  • motor drive signals and brake drive signals are supplied to a superordinate controller to the network.
  • the advantage here is that also specifications of such an independent entity in the network can be linked.
  • the network is designed such that the respective motor is energized only when the output signal of the module and possibly a correspondingly assigned Motoran Kunststoffsignal grant release to a higher-level control.
  • the network is designed such that the respective brake is only activated when the output signal of the module, the brake control signal of the inverter and optionally a correspondingly assigned Bremsenan Kunststoffsignal a higher-level control release granted.
  • the senor is an angle sensor which is connected to a shaft, in particular a rotor shaft of an electric motor.
  • means are provided for moving the hoist to different Hubwerkspositionen within the system in the system.
  • the advantage here is that the entire hoist can be moved in different areas. This allows loads to be lifted at a first location and deposited at a second location.
  • the safe area for the stay of persons is monitored by securing means in the system, which are connected to a higher-level controller and / or the inverter.
  • securing means in the system, which are connected to a higher-level controller and / or the inverter.
  • the advantage here is that the protection of persons is achieved.
  • These safety devices either consist of mechanical barriers or are carried out electronically by means of light barriers, sound sensors or similar scanning methods.
  • means for displaying the plant safety are provided in the system.
  • the advantage here is that the current status, which concerns the plant safety, is directly recognizable for persons.
  • a module for safe operation of the hoist in which means for receiving and detecting motor encoder signals, means for storing setpoint specifications, means for analyzing the motor encoder signals and means for outputting reaction signals are provided, in particular electrical outputs.
  • This module takes over the complete monitoring of the hoist functions.
  • the inputs and outputs required for monitoring can be integrated in this module.
  • the module includes a memory which stores the boundary conditions necessary for monitoring and a processor which processes the input data. By this means, the module is independent of the other plant components, which reduces the susceptibility of the module to disturbances that occur in the system.
  • the module has means for analysis in particular means for comparing at least two sensor signals.
  • the advantage here is that the signals of the sensors in the module are to be compared with each other.
  • means for receiving and detecting further sensor signals are provided in the module, in particular signals of limit switches.
  • module means for communication with system components, in particular with a parent
  • the advantage here is that the module forwards irregularities that affect the plant safety, directly to a higher-level control.
  • a first step all but at least one brake to be tested of the coupled drives are released, in a second step, the coupled drives are started, in a third step, the angular position of a shaft of the drives is compared, in particular to match the setpoint.
  • the advantage here is that the brakes of the hoist are verifiable, whereby the safety is increased.
  • the current state of the system can be represented by a display means.
  • the advantage here is that the state of the security of the plant in spatial proximity to the system can be displayed.
  • the current state of the system can be forwarded to a higher-level controller.
  • the advantage here is that the plant control is enabled to respond to the test result. As a result, follow-up problems are reducible.
  • the hoisting gear can be brought into a position in a safe area, in particular in an area shut off for persons at risk.
  • a safe area in particular in an area shut off for persons at risk.
  • the brake test is performed on the brakes of the coupled drives in succession.
  • the advantage here is that all brakes are verifiable. Also, combinations of brakes verifiable, the different security levels of the hoist can be checked verifiable.
  • the higher-level controller will send a move command for moving the coupled drives to a safe position, the higher-level control will trigger the brake test, and the inverter will perform a brake test.
  • the advantage here is that the higher-level control determines the time for the brake test.
  • the actual implementation by the inverter is independent of the higher-level control.
  • the evaluation of the brake test is independent of both the higher-level control and the inverter, as it is only carried out in the module. Thus, an independent review of the brakes can be achieved.
  • FIG. 1 shows a device according to the invention for the safe operation of a hoist is shown.
  • FIG. 3 shows a further embodiment of the device according to the invention.
  • FIG. 1 shows the components necessary for the safe drive of a hoist.
  • the two geared motors 1 drive a shaft on which, for example, a
  • Cable drum is located.
  • the two motors are attached to the two ends of the shaft, the type of attachment and the type of transmission are dependent on the respective spatial specifications.
  • the connection of the two geared motors is for the sake of
  • Both geared motors 1 are each equipped with a brake 2. This serves as a holding brake in normal operation. This holding brake is thus activated in particular when the geared motors 1 are at standstill or should be located.
  • the geared motors 1 and the associated brakes 2 are designed such that a redundant system is formed.
  • Each gear motor brake unit is designed so that it is able to hold the hoist together with the existing loads alone, independently of other geared motor brake units, with the brake engaged in the height position.
  • the respective mounted on the geared motor 1 motor encoder 3 is an example of an absolute encoder, which can determine the number of revolutions and the rotor position with high resolution.
  • the geared motors 1 are fed in parallel from a common frequency converter 4. In further embodiments according to the invention this is equipped with a braking resistor 5. In normal operation, the braking power that is generated when the load is lowered can then be fed to this braking resistor 5.
  • the control of the geared motors 1 is carried out by means of the signal of a motor encoder 3 from at least one geared motor, which is transmitted by the motor encoder line 18 to the frequency converter 4.
  • each contactors 7 are still connected, which allow an individual shutdown of the individual geared motors 1.
  • the supply line 14 is the power supply of the frequency converter 4 and the brakes 2.
  • the low-voltage supply 15 is provided to supply the control and switching electronics.
  • the control of the hoist via the controller 12, which is connected via the communication line 17 to the frequency converter 4.
  • the two gearmotors 1 with the brakes 2 and the associated frequency converter 4 are designed in their power and size such that a geared motor 1 with its associated brake 2 alone sufficient to operate the hoist. This redundancy is an essential feature for safe operation of the hoist.
  • the frequency converter 4 is designed such that at least two geared motors can be supplied by it.
  • the brakes 2 of the geared motors 1 are checked at regular intervals for their function.
  • the used brakes 2 are spring pressure brakes, which are closed when de-energized.
  • the Release brake 2 When switching the geared motor 1 2 electromagnets are energized in the brake, the Release brake 2.
  • the brake controls 9 are switched via the relays 10.
  • the coordination of the functional test takes over the controller 12, which is connected by the control line 16 with these relays 10. Only when the function of all brakes 2 is guaranteed can the hoist be put into operation.
  • the monitoring module 6 is used to monitor the hoist during operation. It is the sensor side by the safety line 13 connected to the limit switches 11, which map the end positions of the hoist, the motor sensors 3, which determine the absolute position and the rotational speed of the geared motors 1 and the controller 12, which communicates the boundary conditions via one of the signal lines 16.
  • the monitoring module is connected to the contactors 7 and the central brake control 8 through the safety line 13.
  • the respective angular positions of the two gearmotors 1 are detected by the two motor encoders 3, ie angular position sensors, from which the associated rotational speeds are determined.
  • One of the two motor encoders 3 is connected to the frequency converter 4 via one of the motor encoder lines 18 in order to supply the feedback signal necessary for the regulation of the drive.
  • the motor encoder signal is forwarded by the frequency converter 4 for further analysis to the monitoring module 6.
  • the other motor encoder 3 is connected via the motor encoder lines 18 directly to the monitoring module 6.
  • the analog signals of the two motor encoders 3 are compared with each other, so that an intervention in the system is possible when deviating from the setpoint specification.
  • both end positions namely the upper and lower end position, predetermined by limit switch 11.
  • the two end positions are to be made by a corresponding setting in the controller 12.
  • the position of the hoist is derived from the motor encoder signal.
  • the lifting of the load is carried out in normal operation with the full functionality that a regulated drive has to offer. So different speeds and especially acceleration or deceleration ramps can be driven.
  • the energy released during braking is dissipated via the braking resistor or alternatively fed back into the network.
  • the two brakes 2 are tested for normal operation at specified intervals on their function.
  • the two relays 10 are switched by the controller 12 during operation, one after the other, so that the brakes 2 occur without power.
  • the signals of the motor encoders 3 are compared with predetermined reference values.
  • the motor encoders 3 should determine a constant rotor position. If this is identical for all motor encoders 3 read out, then the test is passed. The hoist can continue to operate in normal operation.
  • a deviation of the motor encoder signals from the respective setpoints is detected. This deviation can be caused for example by insufficient braking action of a tested brake 2. If the comparison of the motor encoder signals with the setpoint values results in a difference amount which is above a defined threshold value, then the hoist is classified as unsafe and the test is deemed to have failed. In this case, display means indicate a warning or an alarm, which can be transmitted via a communication device to a higher-level control.
  • FIG. 2 shows the possible hoist positions 20 that can be assigned to either the working area 21 or the safe area 22.
  • the work area 21 is the area where the hoist 23 moves with the load 24 when the brake test was successful. This area is suitable for the stay of persons, because the load is secured against uncontrolled sinking.
  • the safe area 22 is closed by security means for persons. Here is the stay of people prevented.
  • a brake test is carried out in the hoisting gear 23, then the hoisting gear is moved into this safe area 22 and the brake test is carried out. If the test is positive, the hoist can continue its work, ie in particular to carry out its movement into the working area 21. In the event that the brake test is negative, the load 24 is discontinued in this area. The faulty brake can be maintained in this position in a simple and safe way. Subsequently, the hoist 23 is again in operation after a new brake test.
  • FIG. 3 shows a further exemplary embodiment of the device according to the invention.
  • the arrangement and equipment of the drives is the description of Figure 1 accordingly.
  • FIG. 3 shows the connection of the motors 1 and the brakes 2, which are not electrically connected directly to the frequency converter 4 or the supply line 14.
  • the contactors 7, 8, 9, 10, 31, 32 shown in the figure represent a network which maps three levels of the safe circuit of the hoist.
  • the brakes 2 are designed so that they are closed when de-energized. To enable a movement of the drives, so the brake 2 must be energized.
  • the supply of the brakes 2 takes place from the supply line 14, in which case the contactors 8, 9 and 10 are interposed.
  • the contactor 8 disconnects the network of contactors necessary for energizing the brakes 2 from the supply line 14. This contactor 8 is switched by the monitoring module 6. If no disturbance is registered on the hoist, the contactor 8 switches to passage so that the brakes can be operated with the supply voltage. When switched contactor 8, the supply voltage is applied to the contactor 9.
  • a signal is required, which is provided by the monitoring module 6.
  • the frequency converter 4 In order to pass this through to the contactor 9, the frequency converter 4 must release it to the contactor 32. If the contactor 32 is switched through, that's up to it Signal of the monitoring module 6 on the contactor 10. If the contactor 10 is switched by the controller 12, this obtains a circuit of the contactor 9, whereby an opening of the brake 2 is effected.
  • the brake can only be opened when a supply voltage is applied, when the monitoring module 6 is no error message, the frequency converter 4 is ready for operation, and the controller 12 specifies the opening of the brake.
  • the network is thus designed to logically link such operating conditions.
  • the release of the motors 1 also takes place according to a multi-stage process.
  • the motors 1 must be released in the frequency converter 4, which is not shown in the figure.
  • the contactor 7 is inserted, which is switched by the contactor 31.
  • a signal from the contactor 31 must be from
  • monitoring module 6 which assumes that there are no security problems, only then the contactor 31 can be switched by the controller 12, so that the contactor 7 is turned on and the engine can go into operation.
  • the motor can only be operated when the supply voltage is provided by the inverter, when the monitoring module 6 no error message is present, and the controller 12 outputs a power-on signal for the motor.
  • the network is thus designed to logically link such operating conditions.
  • the brake 2 can be closed in a drive and the motor 1 are energized by the frequency converter 4. If no angular change is detected when a limit torque is built up on the motor encoder 3, then the brake is considered safe up to this limit torque.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Stopping Of Electric Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne une installation pour le fonctionnement sûr d'un mécanisme de levage, comprenant un onduleur (4) pour l'alimentation d'au moins deux entraînements (1), constitués d'un moteur (1), de freins (2) et à chaque fois au moins d'un capteur. Les entraînements sont accouplés l'un à l'autre et le premier entraînement est régulé au moyen de son capteur par l'onduleur (4). Le signal du capteur du premier entraînement est transmis à un module, et les signaux de capteur des autres entraînements sont également acheminés au module. Le module présente des moyens pour analyser les signaux de capteur, et le module contient des moyens pour influencer le déplacement du mécanisme de levage.
PCT/EP2008/004427 2007-06-11 2008-06-03 Agencement, module et procédé pour le fonctionnement sûr d'une installation Ceased WO2008151744A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08758988.3A EP2160349B1 (fr) 2007-06-11 2008-06-03 Agencement, module et procédé pour le fonctionnement sûr d'une installation
CN2008800199569A CN101679008B (zh) 2007-06-11 2008-06-03 用于安全运行设备的配置结构、模块及方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027351.9 2007-06-11
DE102007027351 2007-06-11

Publications (1)

Publication Number Publication Date
WO2008151744A1 true WO2008151744A1 (fr) 2008-12-18

Family

ID=39736567

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/004427 Ceased WO2008151744A1 (fr) 2007-06-11 2008-06-03 Agencement, module et procédé pour le fonctionnement sûr d'une installation

Country Status (4)

Country Link
EP (2) EP2160349B1 (fr)
CN (3) CN101679008B (fr)
DE (1) DE102008026465B4 (fr)
WO (1) WO2008151744A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015176119A1 (fr) * 2014-05-23 2015-11-26 Jands Pty Ltd Dispositif de levage électromagnétique permettant d'éliminer la possibilité de perte de contrôle d'une charge en raison d'un point de défaillance unique dans un train d'entraînement et son procédé de fonctionnement
CN113816272A (zh) * 2021-09-17 2021-12-21 安徽安久模架科技有限公司 一种带有自动控制系统的电动提升机
CN114460896A (zh) * 2022-01-11 2022-05-10 首钢京唐钢铁联合有限责任公司 炼钢脱硫搅拌头升降控制装置及方法

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE102009007559B4 (de) * 2009-02-04 2017-07-06 Sew-Eurodrive Gmbh & Co Kg Antriebssystem, Mehrfachantriebssystem, Verfahren zum Überprüfen eines Antriebssystems oder Mehrfachantriebssystems, Verfahren zur Inbetriebnahme einer Maschine, Maschine mit einem Antriebssystem oder Mehrfachantriebssystem, Computerprogramm und –produkt
DE102014001988B4 (de) * 2014-02-17 2018-01-11 Sew-Eurodrive Gmbh & Co Kg Antriebssystem mit zumindest zwei eine Last antreibenden Motoren und zumindest einer ersten Bremse und Verfahren zur Dimensionierung eines Bremsmotors zum Antreiben einer Last
CN104460478A (zh) * 2014-11-11 2015-03-25 沈阳新松机器人自动化股份有限公司 一种工业机器人抱闸监控方法及装置
DE102015010174A1 (de) * 2015-08-06 2017-02-09 Esw Gmbh Seilwinde für ein Fluggerät oder Fahrzeug und Verfahren zum Überprüfen einer Seilwinde für ein Fluggerät oder Fahrzeug
FR3072924B1 (fr) * 2017-10-30 2019-10-25 Safran Landing Systems Equipement electrique destine a etre relie a un actionneur electromecanique de freinage et a un actionneur electromecanique d'entrainement

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EP0080679A2 (fr) 1981-11-30 1983-06-08 Westinghouse Electric Corporation Appareil pour enlever et/ou déposer des assemblages combustibles d'un réacteur nucléaire
DE3729064A1 (de) * 1987-08-31 1989-03-09 Tax Ingenieurgesellschaft Mbh Redundantes windensystem
DE3933505A1 (de) 1988-10-08 1990-04-12 Man Ghh Krantechnik Hubwerk
DE3838058A1 (de) 1988-11-07 1990-05-10 Mannesmann Ag Antriebsueberwachung einer antriebskette
DE9013918U1 (de) 1989-10-06 1991-05-16 MAN GHH Logistics GmbH, 7100 Heilbronn Hubwerk

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CN1206155C (zh) * 2001-05-25 2005-06-15 太原重型机械(集团)有限公司 一种起重机的起升机构
DE10339440A1 (de) * 2003-08-25 2005-04-07 Demag Cranes & Components Gmbh Verfahren zur Überwachung eines Kettenzuges und Kettenzug
CN2709520Y (zh) * 2004-03-12 2005-07-13 江万宁 钢丝绳卷扬提升垂直升船机的安全装置
DE102004039151A1 (de) * 2004-08-12 2006-02-23 Wabco Gmbh & Co.Ohg Brake-Performance-Üerwachung
CN1752726A (zh) * 2004-09-20 2006-03-29 交通部公路科学研究所 测量车轮滑动率的方法以及实现该方法的检测装置

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Publication number Priority date Publication date Assignee Title
DE3137523A1 (de) 1981-09-22 1983-04-28 Mannesmann AG, 4000 Düsseldorf Sicherheitseinrichtung fuer ein hebezeug
EP0080679A2 (fr) 1981-11-30 1983-06-08 Westinghouse Electric Corporation Appareil pour enlever et/ou déposer des assemblages combustibles d'un réacteur nucléaire
DE3729064A1 (de) * 1987-08-31 1989-03-09 Tax Ingenieurgesellschaft Mbh Redundantes windensystem
DE3933505A1 (de) 1988-10-08 1990-04-12 Man Ghh Krantechnik Hubwerk
DE3838058A1 (de) 1988-11-07 1990-05-10 Mannesmann Ag Antriebsueberwachung einer antriebskette
DE9013918U1 (de) 1989-10-06 1991-05-16 MAN GHH Logistics GmbH, 7100 Heilbronn Hubwerk

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015176119A1 (fr) * 2014-05-23 2015-11-26 Jands Pty Ltd Dispositif de levage électromagnétique permettant d'éliminer la possibilité de perte de contrôle d'une charge en raison d'un point de défaillance unique dans un train d'entraînement et son procédé de fonctionnement
AU2015263842B2 (en) * 2014-05-23 2020-02-27 Jands Pty Ltd An electromechanical hoist for eliminating the possibility of loss of control of a load following a single point failure in a drive train and a method of operation thereof
CN113816272A (zh) * 2021-09-17 2021-12-21 安徽安久模架科技有限公司 一种带有自动控制系统的电动提升机
CN113816272B (zh) * 2021-09-17 2023-11-03 安徽安久模架科技有限公司 一种带有自动控制系统的电动提升机
CN114460896A (zh) * 2022-01-11 2022-05-10 首钢京唐钢铁联合有限责任公司 炼钢脱硫搅拌头升降控制装置及方法
CN114460896B (zh) * 2022-01-11 2024-06-07 首钢京唐钢铁联合有限责任公司 炼钢脱硫搅拌头升降控制装置及方法

Also Published As

Publication number Publication date
DE102008026465A1 (de) 2008-12-18
EP2160349B1 (fr) 2015-04-08
EP2160349A1 (fr) 2010-03-10
CN102674184B (zh) 2015-07-08
EP2700607A3 (fr) 2014-03-26
CN102674184A (zh) 2012-09-19
CN102674183B (zh) 2015-10-14
EP2700607A2 (fr) 2014-02-26
CN101679008A (zh) 2010-03-24
CN101679008B (zh) 2013-08-21
DE102008026465B4 (de) 2018-01-11
EP2700607B1 (fr) 2015-09-09
CN102674183A (zh) 2012-09-19

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