EP1634849A2 - Dispositif de freinage de sécurité d'un tambour d'enroulement et procédé de travail pour le rodage du frein de sécurité - Google Patents

Dispositif de freinage de sécurité d'un tambour d'enroulement et procédé de travail pour le rodage du frein de sécurité Download PDF

Info

Publication number
EP1634849A2
EP1634849A2 EP05018643A EP05018643A EP1634849A2 EP 1634849 A2 EP1634849 A2 EP 1634849A2 EP 05018643 A EP05018643 A EP 05018643A EP 05018643 A EP05018643 A EP 05018643A EP 1634849 A2 EP1634849 A2 EP 1634849A2
Authority
EP
European Patent Office
Prior art keywords
winding drum
output shaft
safety brake
brake device
lifting gear
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.)
Granted
Application number
EP05018643A
Other languages
German (de)
English (en)
Other versions
EP1634849B1 (fr
EP1634849A3 (fr
Inventor
Klaus-Jürgen Winter
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
Application filed by Demag Cranes and Components GmbH filed Critical Demag Cranes and Components GmbH
Publication of EP1634849A2 publication Critical patent/EP1634849A2/fr
Publication of EP1634849A3 publication Critical patent/EP1634849A3/fr
Application granted granted Critical
Publication of EP1634849B1 publication Critical patent/EP1634849B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • 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
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels

Definitions

  • the invention relates to a safety brake device of a drivable winding drum of a hoist, which is braked at excessive lowering speed by a concentric with the winding drum and this frictionally connected brake ring smoothly to a halt as soon as the brake ring resting against a cylindrical braking surface of the hoist is blocked and a working method for Grinding the safety brake.
  • Such devices are known and are used, for example, as a safety device in the form of a second brake for winches, rolling door drives or similar winding devices, in which apart from the usual service brake, which is usually arranged on the motor shaft, an independent of the engine brake safety brake device is required ,
  • Such safety brake device to prevent the crash of the lifting drive, for example, after a tooth fracture in the screw jack, a crash of the load safely, or should end their unwanted sagging after a relatively short distance.
  • a safety brake of the type described above is known for example from German Patent DE 31 37 523 C2, it serves to hedge a hoist and should slow down the cable drum at excessive lowering speed.
  • a cylindrical braking surface is formed on the circumference of the cable drum in the region of one of the two end faces, which is encompassed by a brake ring.
  • the brake ring is formed of individual segments and provided on its inner circumference with a brake pad, which is adjustable in its contact pressure, can be pressed against the braking surface. In the operating state of the hoist, the brake ring is frictionally taken over the brake pad and runs with the cable drum of the hoist to.
  • the brake ring On the outer circumference of the brake ring is designed as a ratchet, in the teeth of a fixed to the frame of the safety device externally operated pawl can engage, in the event of damage to the hoist the Brake ring blocked immediately. Since the brake ring frictionally rests with its brake pad on the braking surface, the brake lining of the blocked brake ring on the braking surface first slips slightly through the pawl when the brake ring is suddenly blocked until the lifting drum comes to a standstill. The gentle braking of the cable drum, however, requires a correctly set contact pressure of the brake lining to the braking surface.
  • the safety brake can be adjusted after their assembly with the screw jack and checked without having to completely upgrade the hoist with the cable drum.
  • the invention is based on the object to design a safety brake device of the generic type so that with little effort of material and costs the grinding and adjusting the necessary for the shutdown of the winding drum braking torque from the rest of the manufacturing process of the hoist detached, before the assembly of the complete hoist can be done.
  • the invention proposes that the braking surface for the brake ring on the outer circumference of an output shaft of a lifting gear and a winding drum concentrically connecting torsionally rigid coupling is provided, to which the output shaft and winding drum are detachably connected. Since in the invention, in contrast to the aforementioned solutions, the braking surface is arranged on a completely separate, releasably provided between the output shaft and winding drum component, it is possible to carry out the grinding independently of the winding drum and also of the output shaft before the final assembly of the output shaft, so that there is no additional load on the lifting gear. The production flow and assembly are not obstructed by the adjustment and testing operations, the coupling is cheaper to manufacture, as a complex drive shaft as in the prior art.
  • the safety brake according to the invention allows by its structural design a working method for grinding the brake ring, which is characterized in that before assembly of the safety brake device, the clutch, together with the patch to be ground brake ring, tested in a device simulating the hoist and adjusted to the required friction torque ,
  • the at least in the region of the braking surface cylindrically shaped coupling is connected on the one hand via a concentric hub with the output shaft of the lifting gear and on the other hand on its outer surface adjacent to the braking surface with the winding drum.
  • the coupling can be prepared and set up independently of the different translations of the screw jack and also regardless of the design of the winding drum, the grinding and setting can be done in a cost-saving in specially created devices, in economically meaningful lot sizes and independent of the respective order situation of the entire hoist.
  • the thus prefabricated clutches with braking device can be made independent of the other Hubwerks negligence, stored or shipped.
  • the hub and the output shaft of the lifting gear are connected via corresponding rotary driving.
  • the coupling for transmitting the drive torque can be simply plugged onto the output shaft, after outside of the hoist the brake ring ground on the brake surface of the clutch and the correct braking torque has been set.
  • the rotational drive is designed as a splined or toothed shaft connection.
  • shaft-hub connections torques in changing directions can be transmitted very well, as is well known.
  • one of the rotary driving adjacent area of the hub is provided with a centering part supported on the output shaft of the lifting gear.
  • the output shaft is accordingly provided with a shaft collar, which carries the centering part of the hub.
  • the coupling is cup-shaped and surrounds the output shaft of the lifting gear with a radial distance, at least extending on the output shaft supporting center of the hub extends into the winding drum. In this way, the dead load of the winding drum is passed near its center of gravity in the output shaft of the lifting gear.
  • the brake ring is placed on the winding drum remote from the region of the outer periphery of the coupling and blockable by means of the fixed to the housing of the safety brake device blocking device.
  • the blocking device can be configured as desired, preferably the known from the prior art pawl is hooked, which hooks into a formed with teeth on the outer circumference of the brake ring ratchet.
  • a hoist is drawn in a schematic representation, in which a safety brake according to the invention is installed.
  • the hoist consists simplified of the two frame parts 1 and 2, which are connected to each other via connecting rods 5, 6 and 7, of which in Figure 1, only the connecting rod 7 can be seen.
  • the frame parts 1 and 2 store the winding drum 8, which can raise and lower loads on the wire rope 9.
  • the rotary drive of the winding drum 8 via a motor 4, which drives the (not shown here) input shaft of the lifting gear 3, which is installed in the frame part 2.
  • the braking device 11 can be seen, which is supported on the two connecting rods 5 and 6 and thus indirectly connected to the fixed frame part 2.
  • the braking device 11 itself consists, as will be described later (FIG. 2), of the brake ring 12 with the brake lining 24, which can be pressed against a braking surface 23.
  • part of the braking device 11 is a device for blocking the brake ring 12, which will be described below with reference to FIG 2.
  • FIG. 2 shows a cross section through the hoisting gear along the section line A-B in FIG. 1, so that the details of the safety brake device can be recognized.
  • the brake ring 12 On the cut drawn drum tube 8a of the winding drum 8, the brake ring 12 can be seen, which is provided at its circumference with evenly distributed teeth of a ratchet 13, in the lock as the locking device 14 and thereby lock the brake ring 12 relative to the frame part 2.
  • the pawl 14 is shown in its locked position in which its tip 14a blocks one of the teeth of the ratchet 13 of the brake ring 12 and thereby prevents the winding drum 8 from rotating.
  • the pawl 14 is pivotally mounted on the pin 16 within the two bearing plates 17, which in turn are attached to the connecting rods 5 and 6.
  • the pawl 14 is held in the operation of the hoist by a spring loaded to train in a position in which the tip 14a is positioned outside the enveloping circle of the brake ring 12 and remains as long as the maximum speed of the winding drum 8 is not exceeded during operation.
  • the pawl 14 moves in a case of damage with its tip 14a in the ratchet 13, it is designed as a two-armed lever on the tip 14a facing away from a roller 14b is mounted, which rolls on a (not visible in the drawing) cam ,
  • the cam plate is shaped so that in case of damage to the screw jack, then when a significant increase in the rotational speed of the winding drum 8 beyond a permissible value also announces a crash of the load, the roller 14 b is pressed high, with the result that the pawl 14 pivoted about the pin 16 and is pressed with its tip 14 a behind a tooth of the ratchet 13.
  • the brake ring 12 blocked by it immediately. This process is, with further details on the function and design of the braking device 11, described in German Patent DE 31 37 523 C2 referred to here.
  • a gentle, but nevertheless as fast as possible deceleration of the winding drum is only to be achieved when the brake pad 24 of the brake ring 12 is pressed with exactly defined contact force (braking force) on the braking surface 23 to ensure that the braking deceleration is always large enough to bring the winding drum to a short stop. This can only be achieved if, as already mentioned at the outset, the brake ring 12 is ground, tested and prepared in relation to the brake surface 23 exactly before the hoist is used.
  • the invention proposes a rigid coupling 10 between the screw jack 3 and the winding drum 8, which will be described in more detail below with reference to FIG.
  • a centering seat on which a broadened inner circumferential area of the hub 15 of the coupling 10, which stabilizes, is supported laterally next to the rotational drive 10a on the output shaft 21.
  • the outer circumference 20 of the clutch 10 extends bell-shaped in the direction of the transmission 3 via the output shaft 21 and surrounds this concentrically.
  • the braking surface 23 is also concentric with the output shaft 21, which is encompassed by the brake ring 12 in a known manner.
  • the brake ring 12 is provided on its inner circumference with the brake pad 24 which is pressed with adjustable contact pressure against the formed on the clutch 10 braking surface 23. So that no moisture and no dirt between braking surface 23 and brake lining 24 passes, the brake surface 23 between the brake ring 12 and clutch 10 seals 19 are provided on both sides, which seal the gap between the components.
  • the drum tube 8a of the winding drum 8 is attached.
  • the drum tube 8a and the coupling 10 are provided with opposing apertures 18 through which coupling elements 22 are stretched, which coupling 10 and winding drum 8 connect to each other.
  • the clutch 10 can be pushed for this purpose, for example, with the provided in its hub 15 rotational drive 10a on a corresponding splined shaft of a specially prepared device in which the damage of the hoist can be simulated. In this way, the brake ring 12 can be adjusted and adjusted without hindering the production of the hoist and without the lifting gear is damaged by excessive loads in trial operation.
  • the clutch 10 can be installed together with the brake ring 12 directly in the hoist and thereby be connected to the output shaft 21 of the lifting gear 3 and the winding drum 8 ready for use , or to be stored and stored until use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP05018643A 2004-09-09 2005-08-27 Dispositif de freinage de sécurité d'un tambour d'enroulement et procédé de travail pour le rodage du frein de sécurité Expired - Fee Related EP1634849B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004043592A DE102004043592B3 (de) 2004-09-09 2004-09-09 Sicherheitsbremseinrichtung einer Wickeltrommel sowie Arbeitsverfahren zum Einschleifen der Sicherheitsbremse

Publications (3)

Publication Number Publication Date
EP1634849A2 true EP1634849A2 (fr) 2006-03-15
EP1634849A3 EP1634849A3 (fr) 2006-12-20
EP1634849B1 EP1634849B1 (fr) 2008-12-03

Family

ID=35447379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05018643A Expired - Fee Related EP1634849B1 (fr) 2004-09-09 2005-08-27 Dispositif de freinage de sécurité d'un tambour d'enroulement et procédé de travail pour le rodage du frein de sécurité

Country Status (6)

Country Link
US (1) US7303183B2 (fr)
EP (1) EP1634849B1 (fr)
JP (1) JP4855741B2 (fr)
CN (1) CN100515915C (fr)
DE (2) DE102004043592B3 (fr)
ES (1) ES2319204T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7686282B2 (en) * 2008-05-30 2010-03-30 Amoss Trading Services, Inc. Handle-operated brake/release mechanism for a cable drum winch
CN101830395B (zh) * 2010-06-14 2012-05-23 卫华集团有限公司 一种超高扬程起重设备平衡梁吊点同步调节方法
EP2669456B1 (fr) * 2012-05-29 2015-04-15 Assa Abloy Entrance Systems AB Mécanisme de protection de rupture de ressort pour système de porte sectionnelle
CN102729880B (zh) * 2012-07-19 2014-06-18 三一重工股份有限公司 锁紧装置和背罐车
CN104141712A (zh) * 2014-07-10 2014-11-12 浙江亚特电器有限公司 一种刹车机构
US9327363B2 (en) * 2014-07-25 2016-05-03 Arvinmeritor Technology, Llc Method of making a bracket assembly for a brake assembly
CN104477809B (zh) * 2014-12-10 2016-10-05 洛阳源创电气有限公司 矿井提升机制动的双闭环调节装置及制动方法
CN104444919B (zh) * 2014-12-10 2016-10-05 洛阳源创电气有限公司 可防滑的矿井提升机恒减速制动电液控制设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1218104A (en) * 1968-04-23 1971-01-06 John Stevenson Thomson Improvements relating to winches and load cable means associated therewith
DE19633836C1 (de) * 1996-08-22 1998-03-05 Stahl R Foerdertech Gmbh Seilzug mit auf die Ausgangswelle wirkender Sicherheitsbremse

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DK267779A (da) * 1978-06-27 1979-12-28 Merck & Co Inc Fr&mgangsmaade til fremstilling af n-aralkylamino-propoxycyanopyridiner
US4493479A (en) * 1980-11-07 1985-01-15 Ederer Incorporated Hoist drive safety system
JPS57158662A (en) * 1981-03-25 1982-09-30 Toshiba Corp Sorter device
DE3137523A1 (de) * 1981-09-22 1983-04-28 Mannesmann AG, 4000 Düsseldorf Sicherheitseinrichtung fuer ein hebezeug
US4489919A (en) * 1983-03-21 1984-12-25 Meyer Ostrobrod Safety winch with disengageable drive
US5344121A (en) * 1991-04-05 1994-09-06 Morris Baziuk Safety winch
US5201821A (en) * 1992-01-08 1993-04-13 Otis Elevator Company Disc brake elevator drive sheave
FI925466A (fi) * 1991-12-02 1993-06-03 Otis Elevator Co Skivbroms foer driftblockhjul i en hiss
US5458318A (en) * 1993-10-15 1995-10-17 Kci Konecranes International Corporation Drum brake
US5671912A (en) * 1994-08-10 1997-09-30 Ederer Corporation Method & apparatus for providing low speed safety braking for a hoist system
US5860635A (en) * 1995-12-21 1999-01-19 Seascape Systems Limited Winch having hydraulic speed control and planetary gear system
US5664766A (en) * 1996-05-17 1997-09-09 Unique Concepts Ltd. Winch with reverse rotation protection
JP2001173674A (ja) * 1999-12-15 2001-06-26 Sanden Corp 動力伝達機構
KR100402110B1 (ko) * 2001-09-12 2003-10-17 주식회사 고려호이스트 에어밸런싱 호이스트의 안전장치
US7080824B1 (en) * 2004-04-09 2006-07-25 George & Goldberg Design Associates Chain motor drive controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1218104A (en) * 1968-04-23 1971-01-06 John Stevenson Thomson Improvements relating to winches and load cable means associated therewith
DE19633836C1 (de) * 1996-08-22 1998-03-05 Stahl R Foerdertech Gmbh Seilzug mit auf die Ausgangswelle wirkender Sicherheitsbremse

Also Published As

Publication number Publication date
ES2319204T3 (es) 2009-05-05
CN1749150A (zh) 2006-03-22
EP1634849B1 (fr) 2008-12-03
US7303183B2 (en) 2007-12-04
JP4855741B2 (ja) 2012-01-18
US20060169964A1 (en) 2006-08-03
EP1634849A3 (fr) 2006-12-20
JP2006076793A (ja) 2006-03-23
DE102004043592B3 (de) 2006-03-09
CN100515915C (zh) 2009-07-22
DE502005006124D1 (de) 2009-01-15

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