EP0703185B1 - Palan électrique avec dispositif de commande de la vitesse - Google Patents

Palan électrique avec dispositif de commande de la vitesse Download PDF

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Publication number
EP0703185B1
EP0703185B1 EP95250198A EP95250198A EP0703185B1 EP 0703185 B1 EP0703185 B1 EP 0703185B1 EP 95250198 A EP95250198 A EP 95250198A EP 95250198 A EP95250198 A EP 95250198A EP 0703185 B1 EP0703185 B1 EP 0703185B1
Authority
EP
European Patent Office
Prior art keywords
protective housing
electric
hoist according
electric hoist
electric motor
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.)
Revoked
Application number
EP95250198A
Other languages
German (de)
English (en)
Other versions
EP0703185A3 (fr
EP0703185A2 (fr
Inventor
Jürgen Heun
Holger Freitag
Anton Müller
Anton Münzebrock
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.)
Demag Cranes and Components GmbH
Original Assignee
Demag Cranes and Components GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6529225&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0703185(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Demag Cranes and Components GmbH filed Critical Demag Cranes and Components GmbH
Publication of EP0703185A2 publication Critical patent/EP0703185A2/fr
Publication of EP0703185A3 publication Critical patent/EP0703185A3/fr
Application granted granted Critical
Publication of EP0703185B1 publication Critical patent/EP0703185B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B66D3/20—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
    • B66D3/22—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing with variable-speed gearings between driving motor and drum or barrel

Definitions

  • the invention relates to an electric train with speed-controlled lifting speed, especially electric chain hoist, in which an electric motor, a transmission, one of which Traction device wrapped wheel, the traction device and a load suspension device are connected to one another in terms of drive, with an electrical control in an external protective housing for the Electric motor, which is connected to a hand control switch.
  • Such electric chain hoists are hoists driven by an electric motor use a link chain as a means of suspension and mainly for vertical transport be used by loads.
  • the electrical control includes the Hand control switch a corresponding number of motor switching pairs, which are protected on Chain hoist are installed.
  • Electric (chain) trains generally have one Speed for lifting and lowering the load according to the nominal speed of the engine and the selected gear ratio. For special ones Use cases require a second slower speed. In these In some cases, a pole-changing motor is selected that has an additional winding for the second Has engine speed and with additional switches of the electrical control is switched.
  • the application area of electric (chain) hoists and the Ease of use could be significantly improved if the speed, i.e.
  • the frequency converter control replaces the electromechanical mentioned Motor switch.
  • the problem arises that the mounting location of the motor switch for the Incorporation of a frequency converter unsuitable or available there standing space is too small. In particular, losses must be dissipated as heat be and also it is necessary to use means for speed measurement to provide appropriate accuracy.
  • the present invention is therefore based on the object Electric (chain) train with speed-controlled lifting speed so that easy installation of control electronics and a tachometer space-saving is possible and the heat loss is dissipated sufficiently can.
  • the task is based on the electric train mentioned at the beginning speed-controlled lifting speed according to the invention solved in that the electrical control, the control electronics with a speed sensor system and that a frequency converter having a power semiconductor for the electric motor for dissipating the heat loss of the power semiconductors, is thermally connected to the protective housing. This makes it possible to install the Control electronics and the speed sensor system simple and space-saving carry out and at the same time dissipate the heat loss sufficiently.
  • the protective housing is in the form of a cup-shaped hood having. This provides the necessary space, because that Protective housing adapts ideally to the other housing components, so that one compact unit is created.
  • cup-shaped hood made of a good heat-conducting material consists. This promotes heat dissipation.
  • the desired heat dissipation can advantageously be promoted thereby be that on the inside of the bottom of the pot a carrier for heat loss generating power semiconductor of a frequency converter is attached.
  • the desired use of space is thereby further features of the invention supports that in a sub-box between protective housing and gear box a shaft end of the transmission or the electric motor protrudes on which a pulse wheel the sensor system is fixed.
  • the pulse wheel can with the engine speed or one turn only slightly reduced speed and e.g. from a magnetic ring and one corresponding number of north and south poles for a magnetic sensor or consist of a reticle for an optical sensor.
  • This arrangement can be carried out so that the scanning unit of the sensor system is attached to the swivel-out circuit board and the impulse wheel opposite on the gearbox or motor shaft.
  • the closed housing of the compact unit of the electric train can now go further can be cooled by using the sensor opposite the shaft end Shaft end of the electric motor a fan wheel is rotatably arranged and that that Protective housing, the lower box, the gear box and the electric motor housing each closed from the outside, internally connected interiors form.
  • the cooling air flow of the fan wheel is therefore by the electric motor Gearbox, the sensors up to the converter unit and out of there Protective housing guided out.
  • the components for the Processing of the control command from the manual control switch, the speed detection, the Speed control of the electric motor and control of the frequency converter are arranged.
  • the frequency converter installed in the protective housing is over Line connections to the power grid, the electric motor and the printed circuit board connected.
  • Another improvement is that between the protective housing and Lower box and seals are inserted around a cable duct. Thereby is the protection of the frequency converter, the speed sensor system, the gearbox, the Electric motor and other components guaranteed.
  • the electric train with speed-controlled lifting speed is in the embodiment shown as an electric chain hoist 1.
  • the electric train consists of one main group Electric motor 2 with an electric motor housing 2a, from a gear 3, the can have several gear stages. In the exemplary embodiment there are two Gear stages shown with gears. The last gear stage is entered as wheel 4 Sprocket 4a and the traction means 5 here consists of a chain 5a, on the one Load suspension means 6, e.g. a crane hook, a bottom block u. Like. Are attached.
  • A serves to regulate the speed and thus to regulate the lifting speed Electrical control 7, which consists of control electronics 7a, which means a manual control switch 26 is operated.
  • the electrical control 7 in the form of the control electronics 7a has one Speed sensor 8 on, with a pulse wheel 8a, which in the example of Figure 2 on a Gearbox or motor shaft 17 is arranged and furthermore has a scanning unit 8b on.
  • the pulse wheel 8a consists e.g. from a circumferential magnetic ring with a corresponding number of north and south poles for a magnetic sensor or but from a reticle for an optical sensor.
  • the speed sensor system 8 is in one with the control electronics 7a a gear box 9 adjoining protective housing 10 and accordingly, a cooling accessible.
  • the protective housing 10 which is on the outside, has the shape of a cup-shaped one Cover 10a.
  • the cooling can e.g. due to a good heat-conducting material, through cooling slots, i.e. on the principle of heat flow and / or Heat conduction are built up. It is advantageous for this on an inside 11 of the Pot bottom 10b a carrier 12 for power semiconductors 13 that generate heat loss a frequency converter 14 housed.
  • the inside 11 of the Protective housing 10 to improve the heat transfer with a black Provide surface 15.
  • a shaft end 17a of the transmission 3 or the electric motor 2 projects into one Lower box 16 between the protective housing 10 and the gear box 9 a pulse wheel 8a of the sensor system 8 is arranged in a rotationally fixed manner at this shaft end 17a.
  • An electronic circuit board 19 is installed in the lower box 16. To Removing the protective housing 10 can this circuit board 19 around a hinge 20th be pivoted outwards (after loosening the opposite screws) improved accessibility and access to the impulse wheel 8a.
  • the sensor system 8 of the type provided that the scanning unit 8b of the sensor system 8 is attached to the pivotable circuit board 19 and the pulse wheel 8a opposite on the transmission or motor shaft 17th
  • the cooling can also be carried out by circulating cooling air. This is on a shaft end 17b of the electric motor opposite the shaft end 17a 2 a fan wheel 23 arranged in a rotationally fixed manner.
  • the cooling air flow of the fan wheel 23 is through 24 interiors that are connected to each other and closed to the outside 24a of the electric motor 2 and 24b of the gear box 9 and 24c of the lower box 16 or the protective housing 10, 10 at the end of the protective housing Cooling air slots, not shown, are attached.
  • components 25 for the Processing the control command from the hand control switch 26 ( Figure 2) Speed detection, the speed control of the electric motor 2 and for the control of the frequency converter 14 is arranged.
  • the frequency converter 14 installed in the protective housing 10 is about Line connections 27 to the power grid, the electric motor 2 and the printed circuit board 19 connected. Between the protective housing 10 and the lower box 16 and Seals 29 are inserted around the line bushing 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Control Of Ac Motors In General (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (13)

  1. Palan électrique à vitesse de levage régulée en régime, notamment palan électrique à chaíne, dans lequel un moteur (2) électrique, une transmission (3), une roue (4) autour de laquelle s'enroule le moyen (5) de traction, le moyen de traction et un moyen (6) porte-charge sont mutuellement reliés en entraínement, comportant une commande (7) électrique pour le moteur (2) électrique, qui est disposée dans un boítier (10) extérieur de protection rapporté sur la boíte (9) de transmission et qui est raccordée à un commutateur (26) de commande manuelle,
    caractérisé en ce que la commande (7) électrique comporte une électronique (7a) de commande dotée d'un équipement (8) de détection de régime,
    et en ce qu'un convertisseur (14) de fréquence, destiné au moteur (2) électrique et comportant des semi-conducteurs (13) de puissance, est relié en conduction thermique au boítier (10) de protection afin de dissiper la chaleur perdue des semi-conducteurs (13) de puissance.
  2. Palan électrique suivant la revendication 1, caractérisé en ce que le boítier (10) de protection est conçu comme capot (10a) en forme de pot.
  3. Palan électrique suivant la revendication 1 ou 2, caractérisé en ce que le capot (10a) en forme de pot est réalisé en matériau bon conducteur de la chaleur.
  4. Palan électrique suivant l'une des revendications 1 à 3, caractérisé en ce qu'un support (12) pour des semi-conducteurs (13) de puissance, produisant de la chaleur perdue, d'un convertisseur (14) de fréquence est fixé sur la face (11) intérieure du fond (10b) de pot.
  5. Palan électrique suivant l'une des revendications 1 à 4, caractérisé en ce que la face (11) intérieure du boítier (10) de protection est, afin d'améliorer le transfert de chaleur, pourvue d'une surface (15) noire.
  6. Palan électrique suivant l'une des revendications 1 à 5, caractérisé en ce qu'un bout (17a) d'arbre de la transmission (3) ou du moteur (2) électrique, sur lequel est disposée en solidarité de rotation une roue (8a) d'impulsions de l'équipement (8) de détection, dépasse dans une boíte (16) inférieure entre le boítier (10) de protection et la boíte (9) de transmission.
  7. Palan électrique suivant l'une des revendications 1 à 6, caractérisé en ce qu'une carte (19) électronique imprimée est montée dans la boíte (16) inférieure, carte qui, après avoir déposé le boítier (10) de protection, peut être pivotée vers l'extérieur autour d'une charnière (20) qui est fixée dans la boíte (16) inférieure ou dans la boíte (9) de transmission.
  8. Palan électrique suivant l'une des revendications 1 à 7, caractérisé en ce que l'unité (8b) de détection de l'équipement (8) de détection est fixée sur la carte (19) imprimée pouvant être pivotée vers l'extérieur, et la roue (8a) d'impulsions est disposée en vis-à-vis sur l'arbre (17) de transmission ou du moteur.
  9. Palan électrique suivant l'une des revendications 1 à 8, caractérisé en ce que, pour le positionnement précis de l'unité (8b) de détection, une broche (21) de centrage est disposée et fixée, en s'étendant toujours à la même distance de l'arbre (17) de transmission ou du moteur, à travers la boíte (16) inférieure et la carte (19) imprimée.
  10. Palan électrique suivant l'une des revendications 1 à 9, caractérisé en ce qu'une roue (23) de ventilateur est disposée en solidarité de rotation sur le bout (17b) d'arbre côté moteur (2) électrique, qui est opposé au bout (17a) d'arbre côté équipement (8) de détection, et en ce que le boítier (10) de protection, la boíte (16) inférieure, la boíte (9) de transmission et le boítier (2a) du moteur électrique forment dans l'espace (24) intérieur des chambres (24a, 24b, 24c) intérieures respectivement fermées vers l'extérieur et communiquant entre elles.
  11. Palan électrique suivant l'une des revendications 1 à 10, caractérisé en ce que les composants (25) pour le traitement de l'ordre de commande du commutateur (26) de commande manuelle, la détection du régime, la régulation du régime du moteur (2) électrique et la commande du convertisseur (14) de fréquence sont disposés sur la carte (19) imprimée.
  12. Palan électrique suivant l'une des revendications 1 à 11, caractérisé en ce que le convertisseur (14) de fréquence monté dans le boítier (10) de protection est raccordé au réseau électrique, au moteur (2) électrique et à la carte (19) imprimée par des lignes électriques (27) de raccordement.
  13. Palan électrique suivant la revendication 12, caractérisé en ce que des joints (29) d'étanchéité sont mis en place entre le boítier (10) de protection et la boíte (16) inférieure, ainsi qu'autour d'un passage (28) de ligne électrique.
EP95250198A 1994-09-15 1995-08-11 Palan électrique avec dispositif de commande de la vitesse Revoked EP0703185B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434373A DE4434373C2 (de) 1994-09-15 1994-09-15 Elektrozug mit drehzahlgeregelter Geschwindigkeit
DE4434373 1994-09-15

Publications (3)

Publication Number Publication Date
EP0703185A2 EP0703185A2 (fr) 1996-03-27
EP0703185A3 EP0703185A3 (fr) 1996-12-27
EP0703185B1 true EP0703185B1 (fr) 2002-04-10

Family

ID=6529225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95250198A Revoked EP0703185B1 (fr) 1994-09-15 1995-08-11 Palan électrique avec dispositif de commande de la vitesse

Country Status (5)

Country Link
US (1) US5632469A (fr)
EP (1) EP0703185B1 (fr)
JP (1) JP3738060B2 (fr)
DE (1) DE4434373C2 (fr)
ES (1) ES2171499T3 (fr)

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US6465788B1 (en) 1999-12-23 2002-10-15 Frederick Energy Products Llc Ruggedized photomultiplier tube and optical coupling in armored detector
US6781130B2 (en) 1999-12-23 2004-08-24 Geosteering Mining Services, Llc Geosteering of solid mineral mining machines
US6435619B1 (en) 1999-12-23 2002-08-20 Geosteering Mining Services, Llc Method for sensing coal-rock interface
IT1317644B1 (it) * 2000-05-18 2003-07-15 Chiara Sozzi Dispositivo di azionamento perfezionato per la trazione di cavi ocatene
US6439544B1 (en) * 2001-01-19 2002-08-27 Conrad Rosenberg Stair tow system and method
US6634621B2 (en) * 2001-08-03 2003-10-21 Malcolm E. Keith Lifting device and a method for lifting by using the same
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WO2005048435A1 (fr) 2003-11-13 2005-05-26 Sew-Eurodrive Gmbh & Co. Kg Entrainement compact
US7334776B2 (en) * 2004-07-08 2008-02-26 Homayoon Kazerooni Apparatus and method for vehicle on-board cargo handling system
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DE102007039030A1 (de) 2007-08-17 2009-02-26 Hoffmann Fördertechnik GmbH Wurzen Elektrokettenzug mit großer Hubhöhe und hoher Hubgeschwindigkeit
WO2009043324A1 (fr) * 2007-10-02 2009-04-09 Hoffmann Fördertechnik GmbH Wurzen Palan électrique à chaîne à grande vitesse de levage
DE102007047360B4 (de) * 2007-10-02 2011-02-17 Hoffmann Fördertechnik GmbH Wurzen Elektrokettenzug
JP5539173B2 (ja) * 2010-11-25 2014-07-02 株式会社キトー 巻上機
JP2013136465A (ja) * 2013-04-12 2013-07-11 Kito Corp 巻上機
CN103803441A (zh) * 2014-02-18 2014-05-21 安徽强力重工起重机械有限公司 一种电动葫芦
JP6689084B2 (ja) * 2016-01-25 2020-04-28 株式会社キトー エンコーダの連結構造
CN106829702A (zh) * 2017-03-31 2017-06-13 叶华 一种具备多种响应功能的拖拉装置
CN108862068B (zh) * 2018-06-26 2020-08-28 合肥市春华起重机械有限公司 一种起重机用起升机构
CN110939410A (zh) * 2019-12-26 2020-03-31 张海涛 一种用于皮带式抽油机的速度保护控制器
CN111943022A (zh) * 2020-08-19 2020-11-17 山东鼎鲁建筑有限公司 一种桥梁检修用自升降设备

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Also Published As

Publication number Publication date
DE4434373A1 (de) 1996-03-28
ES2171499T3 (es) 2002-09-16
DE4434373C2 (de) 1999-04-01
EP0703185A3 (fr) 1996-12-27
US5632469A (en) 1997-05-27
JP3738060B2 (ja) 2006-01-25
EP0703185A2 (fr) 1996-03-27
JPH0891784A (ja) 1996-04-09

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