EP2666743A1 - Système de freinage doté dýun dispositif de nettoyage - Google Patents

Système de freinage doté dýun dispositif de nettoyage Download PDF

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Publication number
EP2666743A1
EP2666743A1 EP12169410.3A EP12169410A EP2666743A1 EP 2666743 A1 EP2666743 A1 EP 2666743A1 EP 12169410 A EP12169410 A EP 12169410A EP 2666743 A1 EP2666743 A1 EP 2666743A1
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EP
European Patent Office
Prior art keywords
brake
braking
cleaning
counterpart
friction surface
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.)
Withdrawn
Application number
EP12169410.3A
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German (de)
English (en)
Inventor
Faruk Osmanbasic
André Chédel
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.)
Inventio AG
Original Assignee
Inventio 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
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP12169410.3A priority Critical patent/EP2666743A1/fr
Publication of EP2666743A1 publication Critical patent/EP2666743A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • B66B7/1276—Cleaning means
    • B66B7/1292—Cleaning means specially adapted for guides

Definitions

  • the invention relates to a braking system for braking an elevator car and / or a counterweight of an elevator installation or for braking a step band of an escalator or a pallet band of a moving walk.
  • An elevator installation has an elevator cage, which is connected via suspension means to a counterweight or to a second elevator cage.
  • a drive which acts selectively on the suspension means or directly on the elevator car or the counterweight, the elevator car is moved along guide rails.
  • the guide rails are usually arranged vertically.
  • the lift system is used to move people and goods within the building over single or multiple floors.
  • the elevator system includes means to secure the elevator car in case of failure of the drive or the suspension means.
  • brake systems are usually installed, which can decelerate and fix the elevator car on the guide rails or arranged parallel to the guide rails brake rails in case of need. Such brake systems are for example in the EP 1 930 282 B1 disclosed.
  • the mentioned coating can affect the braking performance of the aforementioned brake systems sensitive. If the lining has a felted or granular structure, it can not be displaced such as an oil film when braking the brake system and can remain in the worst case between an active surface of the brake system and a friction surface of the guide rail or brake rail.
  • the lining is oil-soaked and may have a much lower coefficient of sliding friction than the effective area of the braking system. As a result, the braking distance can extend excessively.
  • Object of the present invention is therefore to increase the reliability of a brake system, so that even with dirty guide rails or brake rails the intended braking effect is available.
  • a brake system of an elevator installation, an escalator or a moving walk which brake system has a braking device which includes at least one braking element with an active surface.
  • the active surface is pressed during a brake application against a relative to the active surface moving or movable friction surface of a counterpart.
  • the brake system has a cleaning device with at least one cleaning element for cleaning the friction surface.
  • the cleaning element is arranged upstream of at least one braking-effective direction of the active surface.
  • the characteristic brake-action direction designates the direction of movement of the elevator car or the brake system relative to the fixed counterpart, in which a braking force can be generated by the brake system.
  • the brake system can brake only in one or both directions of movement (upward direction of the elevator car and / or downward direction of the elevator car).
  • the cleaning element only touches the friction surface when the brake system is to generate a braking force. This design protects the cleaning element from excessive wear and accumulation of dirt and minimizes operating noise.
  • a first, wear-reducing design is designed such that in the initial phase of the brake insert the cleaning element can be brought into contact with the friction surface after the active surface or simultaneously with the active surface.
  • the delivery of the cleaning element in response to the delivery of the active surface can be done due to the arrangement of the cleaning element relative to the brake element or due to its independent of the brake element actuation.
  • a second, wear-reducing design is designed such that in the initial phase of the brake insert, the cleaning element due to its elastic arrangement relative to the brake element or its independent of the brake element actuation, earlier than the active surface can be brought into contact with the friction surface. As a result, the friction surface is cleaned before the active surface touches them. Accordingly, the full braking force is already available from the beginning of the brake application and over the entire braking distance. Also in the second embodiment, the friction surface is cleaned until no relative movement between the effective surface and the friction surface is present. Even if there is almost no dirt on the friction surface, the use of the cleaning device leads to an increase in the braking power, since the usual applied to the guide rails or brake rail oil film is partially removed.
  • the embodiments of the cleaning device described above can be used both in brake systems with two engageable brake elements and in brake systems with an engageable brake element and a counter-pressure brake shoe or counter-pressure surface.
  • the brake system may, for example, comprise a brake device with two brake elements, wherein each brake element is preceded by at least one cleaning element.
  • the brake elements and the cleaning elements may be arranged symmetrically to a central longitudinal axis of the counterpart.
  • the brake elements and the cleaning elements can be brought into contact with two mutually parallel friction surfaces of the counterpart.
  • the brake system may have a brake device with a brake element and with a counter-pressure brake shoe, wherein both the brake element and the back pressure brake shoe at least one cleaning element is upstream.
  • the counterpart is arranged between the brake element and the counter-pressure brake shoe, or their associated cleaning elements. The brake element, the back pressure brake shoe and the cleaning elements can be brought into contact with two mutually parallel friction surfaces of the counterpart.
  • the cleaning element can be designed differently, for example, its directed against the friction surface to be cleaned side with brushes, steel wool tile and the like can be provided more. However, since dust and dirt may accumulate in the brushes and in the fleece itself, the cleaning element is preferably designed as a solid component such as a scraper, a blade, a plate and the like.
  • the cleaning element designed as a solid component has at least one scraping edge whose edge length corresponds to at least one width of the effective surface.
  • the at least one scraping edge can be arranged in a plane parallel to the friction surface and orthogonal to the longitudinal direction of the counterpart extending parallel to the direction of braking effect.
  • the scraping edge can also be inclined towards one side or towards an edge region of the friction surface, so that the scraping edge conveys the covering to the side like a snow plow.
  • the at least one scraping edge is in a direction to the friction surface arranged parallel plane and obliquely to the longitudinal direction of the parallel to the brake-direction of action extending counterpart.
  • the scraping edge can also be inclined on both sides of the friction surface and consequently have an arrow-shaped profile.
  • the cleaning element may be present earlier than the active surface on the friction surface.
  • the cleaning element must be designed so that the active surface can reach the friction surface unhindered. This can be achieved, for example, by the cleaning element being arranged elastically on the brake element.
  • Another way to operate the cleaning element is that in the released state of the brake system, the cleaning element is held biased by the braking element. Thus, the active surface comes into abutment with the friction surface, the brake element is moved in an initial phase of the brake insert. This displacement of the braking element can be used to release the prestressed cleaning element.
  • the cleaning device can also be designed mechanically independent of the brake element.
  • information of a speed limiter can be used, which is part of the braking system.
  • the cleaning device has an actuating means for the cleaning element, wherein the actuating means can be activated by a mechanical or electrical release signal of the speed limiter.
  • the cleaning device may have a protective device.
  • the cleaning device can at all known braking devices of elevator systems, escalators and moving walks are used.
  • the brake element of a brake device may have a roller or a control eccentric.
  • the cleaning device can also be used in a brake system whose brake element has a brake shoe.
  • the brake system may include a delivery device powered by a fluid source.
  • a fluid can be supplied between the active surface of the brake shoe and the friction surface facing it.
  • the friction between the active surface and the friction surface can be influenced.
  • the embodiments of the braking system described above can be used in an elevator installation, which has the elements mentioned above, such as elevator car, suspension element, counterweight, guide rails and drive.
  • One or more braking devices of the brake system can be arranged on the elevator car and / or on the counterweight.
  • a counterpart can serve one or more guide rails.
  • a brake rail may be present, which serves as a counterpart and which supports the braking force generated by the braking device of the brake system.
  • EP 1 502 891 B1 also known as escalators and moving walks, which may have at least one, arranged on their step band or pallet band brake system of the aforementioned type.
  • Their braking system can be like in the EP 1 502 891 B1 disclosed brakes on a brake rail as a counterpart.
  • the braking system can also brake on the guide rails of the stepped rollers, so that the guide rails also serve as a counterpart.
  • the guide rails or the brake rail are usually arranged stationary on a supporting structure of the escalator or the moving walk.
  • the braking systems of escalators and moving walks described above can also have at least one of the cleaning devices, as described above.
  • FIG. 1 schematically shows in elevation an elevator system 10.
  • This has an elevator car 11, a counterweight 12, a drive unit 13 and a support means 14 on.
  • the support means 14 connects the car 11 with the counterweight 12 and is guided over a traction sheave 15 of the drive unit 13.
  • the drive unit 13 includes a drive motor 30 with an integrated in the housing of the drive motor reduction gear and a service brake.
  • the elevator car 11 is guided on guide rails 16, 17 in the elevator shaft (not shown).
  • the elevator installation has a brake system 101, which contains at least one brake device 100 and at least one speed limiter 20.
  • Two braking devices 100 of the brake system 101 configured as safety brakes are arranged in the floor area of the elevator car 11. These may have a structure which is one of the in the FIGS. 2 to 9 represented braking devices 100, 300, 400, 500 corresponds.
  • the counterweight 12 is also guided on guide rails 18, 19. In the present example, two are also used on the counterweight as trapping brakes configured brake devices 100 arranged.
  • the safety brakes 100 are triggered by the speed limiter 20.
  • the speed limiter 20 monitors the speed of the elevator car 11, the suspension element 14 and the counterweight 12.
  • the speed limiter 20 has a governor rope 21, which runs along with the elevator car 11. As soon as the speed of the elevator car 11 exceeds a predetermined value, the governor rope 21 is blocked by a limiter mechanism 22 of the speed limiter 20.
  • the blocked governor rope 21 pulls on a transmission rod 23, which is movably mounted on the elevator car 11 and which transmits this mechanical triggering signal to the safety brake 100.
  • the triggering signal does not necessarily have to be transmitted mechanically.
  • the speed limiter 20 also has a sensor, not shown, which generates an electrical trigger signal at too high a speed.
  • This trigger signal as indicated by the signal cable 24 shown interrupted, transmitted to a arranged on the counterweight 12 release mechanism 25. This converts the electrical release signal into a mechanical release signal, which in turn is transmitted via a linkage 26 to the brake devices 100.
  • this trigger signal can also be transmitted wirelessly to the triggering mechanism 25.
  • FIG. 2 shows schematically in elevation one of the four braking devices 100 of the in the FIG. 1 shown brake system 101 in the released state.
  • the brake device 100 includes a brake housing 102 and two linearly displaceably mounted in the brake housing 102 brake elements 111, 112. Between the two brake elements 111, 112, a counterpart 160 is arranged.
  • the two brake elements 111, 112 are mirror-symmetrical to each other and arranged to the central longitudinal axis of the counterpart 160.
  • the two brake elements 111, 112 bear against the counterpart 160. If no brake application and so that the brake is released, is between the counterpart 160 and the brake elements 111, 112 sufficient clearance available, as in the FIG. 2 is shown.
  • the brake housing 102 is attached to an elevator car, not shown, which is movable parallel and relative to the counterpart 160 in the indicated arrow S direction.
  • Each of the two brake elements 111, 112 has a wedge body 114 and a brake shoe 113.
  • the wedge guide 115 is exemplified as a sliding guide, of course, roller guides can be used.
  • the brake shoe 113 is fixed, the active surface 116 is directed against a friction surface 161 of the counterpart 160.
  • the counterpart 160 can as in the FIG. 1 shown to be a guide rail of the elevator car. However, it is also conceivable that the counterpart 160 is a brake rail arranged separately in the elevator shaft.
  • the active surface 116 is fed to the friction surface 121 until they touch. If the relative movement of the brake device 100 to the counterpart 160 takes place in the indicated brake-action direction W, the brake elements 111, 112 are dragged from the contact with the counterpart 160 due to the friction forces occurring in the direction of displacement V.
  • the active surface 116 is pressed against the friction surface 161 with a high contact pressure and generates a braking force when the active surface 116 moves relative to the friction surface 161. If there is no relative movement, a holding force acts to hold the mass of the elevator car or counterweight.
  • the wedge guides 115 may be elastically mounted in a known manner with the brake housing 102.
  • the brake shoe 113 can as in the FIG. 2 shown, an effective surface 116 having grooves 117. Of course, holes may be present in place of the grooves 117.
  • the two brake elements 111, 112 are further provided with a Cleaning device 130 equipped. This consists only of two apprisschkligen cleaning elements 131, 132 wherein each a first leg of the cleaning elements 131, 132 between the brake shoe 113 and the wedge body 114 is disposed.
  • the brake shoe 113 and the first leg of the cleaning element 131 are screwed by means not shown screws on the wedge body 114.
  • the second leg of each cleaning element 131, 132 faces the friction surface 161 of the counterpart 160, wherein at the end of a scraping edge 133 is formed.
  • the scraping edge 133 is arranged in front of the active surface 116, so that the scraping edge 133 can be brought into contact with the friction surface 161 earlier than the active surface 116 at the beginning of a brake application.
  • the friction surface 161 moved relative to the active surface 116 can be cleaned before the active surface 116 is pressed against the friction surface 161.
  • the friction surface 161 is cleaned over the entire braking distance by the cleaning element 131, 132 of dust and dirt.
  • the configuration of the cleaning element 131, 132 will be described below with respect to FIGS. 4A and 4B described in more detail.
  • FIG. 3 is schematically in elevation the brake device 100 and the counterpart 160 from FIG. 2 shown why all reference numerals are the same.
  • the difference between FIG. 2 and FIG. 3 is that the braking device 100 in the FIG. 3 is shown in the brake insert.
  • the two brake elements 111, 112 are engaged so far that their brake shoes 113 with their active surfaces 116 with the friction surfaces 161 of the counterpart 160 in abutment.
  • the friction surfaces 161 have with respect to the braking effect direction W in the lower portion of heavy dust and dirt deposits.
  • This covering 170 is continuously removed by the likewise engaged cleaning elements 131, 132 of the cleaning device 130 and until there is no longer any relative movement between the braking device 100 and the counterpart 160.
  • FIG. 4A shows in elevation of one of the brake elements 112 of the Figures 2 and 3 , wherein as a guide and a part of the counterpart 160 is shown.
  • the FIGS. 4A and 4B are described together below, since FIG. 4B the brake element 112 from the FIG. 4A in three-dimensional view shows.
  • the brake element 112 has a wedge body 114 and a brake shoe 113. On the wedge body 114 has two longitudinal grooves 118 are formed, the linear guide of the Brake element 112 is used on the wedge guide, not shown.
  • one of the two legs of the cleaning element 131 is arranged between the brake shoe 113 and the wedge body 114.
  • the brake shoe 113 and the cleaning element 131 are fastened to the wedge body 114 by means of screws 119.
  • screws 119 other fasteners such as clamp body dovetail joints, wedges, pins, rivets and the like can be used more.
  • the cleaning elements 131 are simple sheet metal strips, which are formed by a bend 134 two legs.
  • the leg which is arranged between the wedge body 114 and the brake shoe 113 protrudes beyond this, so that this protruding zone can act elastically like a leaf spring.
  • spring steel is particularly suitable because it has a high tensile strength and bending fatigue strength.
  • the design of the protruding zone as an elastic element or as a spring is important, since the scraping edge 133 is arranged closer to the friction surface 161 in accordance with the two dimensions X and Y than the effective surface 116 (X is greater than Y). This allows a braking of the preceding, continuous cleaning of the friction surface 161. Without the possibility of springback but the cleaning element 131 would block the brake element 112 and the active surface 116 could not be brought into abutment with the friction surface 161.
  • a protective device 141 may be present.
  • the illustrated protection device 141 is essentially a wire hanger that is fixedly connected to the wedge body 114.
  • the scraping edge 133 can move in a plane parallel to the friction surface 161 and at an angle to the plane Longitudinal direction of the counterpart 160 may be arranged.
  • the width of the cleaning element 131 and thus the length of the scraping edge 133 corresponds to the width of the brake shoe 113 or the width of the effective surface 116 thereof.
  • the width of the cleaning element 161 may also be greater than the width of the brake shoe 113.
  • FIGS. 5A and 5B show a further embodiment of a brake element 212 with a wedge body 214 and with a brake shoe 213 in elevation, or in three-dimensional view.
  • This embodiment essentially corresponds to the embodiment described above FIGS. 4A and 4B , The only difference consists in the design of the cleaning element 231 and its attachment frontally on the wedge body 214.
  • the scraping edge 233 of the cleaning element 231 is further arranged in a plane parallel to the friction surface 161 and orthogonal to the longitudinal direction of the counterpart 160.
  • the scraping edge 233 first comes into contact with the friction surface 161.
  • the free leg of the cleaning element 231 bends elastically back in the region of the bend 234 until the brake shoe 213 rests with its active surface 216 of the friction surface 161.
  • FIG. 6 shows schematically and in a sectional elevation designed as a catch brake device 300 in a further embodiment. This is part of a braking system 301, wherein no speed limiter is shown.
  • the brake device 300 has a brake housing, a brake shoe mounted in the brake housing linearly displaceable 311 and a resiliently mounted in the brake housing pressure piece 330. Between the brake shoe 311 and the pressure piece 330, a counterpart 360 is arranged. During a brake application of the brake device 300, the pressure piece 330 and the brake shoe 311 abut against the counterpart 360. If no brake application takes place, between the counterpart 360 and the brake shoe 311 on the one hand and between the counterpart 360 and the pressure piece 330 on the other hand, sufficient clearance exists, as shown in the FIG. 1 is shown.
  • the two housing walls 331, 332 are fixedly connected to each other and the brake housing is attached to an elevator car, not shown, which is movable parallel and relative to the counterpart 360 in the indicated arrow direction S.
  • a wedge guide 312 a wedge body 310 is linearly guided on the first brake housing wall 331.
  • the wedge guide 312 is exemplified as a roller guide, of course, also sliding guides can be used.
  • the brake shoe 311 is fixed, the effective surface 316 is directed against a friction surface 361 of the counterpart 360.
  • the wedge body 310 and the brake shoe 311 together form a brake element.
  • the counterpart 360 may be a guide rail of the elevator car, not shown. However, the counterpart 360 can also be a brake rail arranged separately in the elevator shaft.
  • an inlet portion 313 is formed, which is part of a feeder 303.
  • the inlet region 313 has a suitable shape, for example a curved surface, which is arranged in the edge region of the brake shoe 311 and merges into the effective surface 316 thereof.
  • a fluid 354 starting from the inlet region 313, forming a fluid wedge between the effective surface 316 and the friction surface 361, between the pressed against friction surface 361 and effective surface 316.
  • a feed line 318 is formed, to which a first flexible Connects line 341 and the supply line 318 connects to a first valve 342.
  • the supply line 318, the first flexible line 341 and the first valve 342 are also parts of the feeder 303.
  • the feed line 318 has an orifice 315 which is directed against the inlet region 313.
  • the mouth 315 has a rectangular cross-section, the width of which extends orthogonal to the plane of the drawing and corresponds to the width of the brake shoe 311.
  • the fluid 354 in the present example compressed air, is stored in a gas pressure vessel serving as fluid source 302.
  • the fluid 354 can also be a liquid, for example a mineral oil without additives such as wear reducers, friction reducers and / or antifungal additives.
  • fluid source 302 may include a pump, a fluid reservoir, and a pump motor that drives the pump. As long as the mineral oil is supplied between the active surface 316 and the friction surface 361, a liquid film is present during a brake application despite the high contact pressure at least between a part of the friction surface 361 and the effective surface 316. Once the supply is stopped, the liquid film collapses instantaneously and it acts a braking force or a holding force.
  • the elastically mounted thrust piece 330 may have a sliding counter-pressure surface 334 which, during a braking application, is slidably supported on a rail surface 363 of the counterpart 360 facing away from and parallel to the friction surface 361.
  • the elastically mounted pressure piece 330 may also have a brake shoe.
  • This brake shoe can be designed analogously to the brake shoe 311 and supplied with fluid by means of a feed device. But it can also be constructed like the known brake shoes without fluid can be supplied.
  • the brake system 301 further comprises a controller 351 which is connected via a signal line 352 to the valve 342 and controls it.
  • the supply of fluid 354 may after a fixed sequence or braking method, whose steps are stored in a storage medium 353 of the controller 351. Since the behavior of the brake system 301 in a brake application depends on external influences such as ambient temperature, atmospheric humidity, dust and dirt in the ambient air and the like, the brake system 301 preferably has at least one sensor 355 or at least one connection for a sensor 355 ,
  • the sensor 355 can detect measured values of a brake application and forward them to the controller 351. Such measured values may be the delay of the elevator car, the temperature of the effective area, the braking distance of a preceding brake application, the position of the elevator car at the beginning of the brake application and the like. These measured values can be provided with time information for later use and stored in the storage medium. From these measurements, the controller can calculate the optimal delivery (timing and amount of fluid) and generate control signals to control the valve 342.
  • the braking system 301 also has a hydraulically or pneumatically actuated cleaning device 305 with which the friction surface 361 of the counterpart 360 can be cleaned of dust and dirt.
  • the cleaning device 305 has a cleaning element 391 with two scraping edges 392, 393.
  • the scraping edges 392, 393 extend orthogonally to the plane of the drawing and their length corresponds at least to the width of the brake shoe 311 and thus the width of the friction surface 361.
  • the cleaning device 305 further has a supply line 371 formed in the wedge body 310 and a second flexible line adjoining the supply line 371 372 on.
  • the second flexible conduit 372 connects to a second valve 373 which is connected to the fluid source 302.
  • FIG. 7 is a schematic plan view of another embodiment of a braking device 400 of the in the FIG. 1 illustrated brake system shown in the released state.
  • the brake device 400 substantially corresponds to that in the Figures 2 and 3 Therefore, the same reference numerals are used for the same components and a detailed description of these components is omitted.
  • the difference to the braking device of Figures 2 and 3 is that cleaning elements 492 of the cleaning device 430 are no longer attached to the wedge bodies 114 of the two brake elements 111, 112.
  • the two brake elements 111, 112 have only pawl elements 491, which hold the associated cleaning elements 492 in the pretensioned state in the released state of the brake device 400.
  • the pawl members 491 are arranged in the present embodiment between the wedge bodies 114 and the brake shoes 113 and have a projecting latch tongue 493.
  • the cleaning elements 492 are substantially sheet metal strips, which are made of spring steel, for example, and whose width corresponds at least to the width of the brake shoes 113.
  • the one end of each cleaning element 492 has a scraping edge 494, the other end is fixedly connected to the brake housing 102.
  • an unillustrated speed limiter moves the brake elements 111, 112 along the wedge guides 115 inclined toward the counterpart 160 in the direction of displacement V, the active surface 116 is delivered to the friction surface 161 until they touch each other. This condition is in the FIG. 8 shown.
  • the latch tongues 493 are pulled away from the prestressed cleaning elements 492 and release their ends provided with the scraping edge 494.
  • the biased by bending cleaning elements 492 are directed by the release made straight and the scraping edges 494 of the cleaning elements 492 preferably reach before the active surfaces 116 of the brake shoes 113, the friction surfaces 161 of the counterpart 160th
  • the operational readiness of the brake device 400 can be easily restored by the in FIG. 1 illustrated elevator car 11 or the counterweight 12th is moved to the pit of the elevator shaft, where the cleaning elements 492 can be manually biased again and secured with the latch tongues 493.
  • FIG. 9 Another embodiment of a brake system 501 is shown in FIG FIG. 9 explained.
  • a braking device 500 is used, as in the basic structure of the DE 2 139 056 B2 is known.
  • the brake device 500 is shown in the released position. In this position, the elevator car, not shown, can be moved.
  • the brake device 500 does not brake.
  • the brake device 500 has a brake housing 502, in which a brake element 512 is arranged.
  • the brake element 512 includes a control eccentric 514 and a brake shoe 513.
  • the control eccentric 514 is pivotably mounted about an axis of rotation 528 or about the corresponding pivot bearing 528.
  • the control eccentric 514 is further connected via a connecting part 529 with the in FIG. 1 shown linkage 23, 26 connected. A position of the control eccentric 514 is thus determined by the position of the connecting part 529.
  • the linkage is pivotally mounted about the bearing 527 and can, as the double arrow indicates, be deflected in both pivoting directions.
  • the control eccentric 514 has a control cam 515 which is shaped with respect to the rotation axis 528 'in such a way that a radial distance R from the rotation axis to the control curve 515 increases over a certain angle of rotation.
  • the control eccentric 514 is now rotated by the linkage 527 and the connecting part 529 about the pivot bearing 528. This takes place until the control cam 515 of the control eccentric 514 comes into contact with the counterpart 560, or is pressed against this. If the brake housing 502 is in a downward movement with the car, not shown, or the counterweight, not shown, the control cam 514 is automatically rotated further.
  • the brake housing 502 is pushed away laterally until the clearance between a, on the brake housing 502 elastically arranged pressure piece 550 and the counterpart 560 is repealed.
  • the pressure piece 550 has a back pressure brake shoe 551 with an active surface 516. Further, by rotation of the control eccentric 514, the brake shoe 513 is brought into contact with the counterpart 560, or pressed against this. Thus, the brake device 500 has reached the braking position.
  • the brake system 501 with the brake device 500 further has two cleaning devices 530, 570.
  • the first cleaning device 530 is engaged only when it is necessary to decelerate a downward movement of the elevator car, not shown.
  • the second cleaning device 570 is engaged only when it is necessary to decelerate an upward movement of the elevator car.
  • the two cleaning devices 530, 570 differ from each other only in the embodiment of the actuating means. While the first cleaning device 530 is mechanically connected to and operated by the control eccentric 514 by a tension spring 531 as an actuating means, the second cleaning device 570 has an electromagnet 571 as an actuating means. Of course, both cleaning devices 530, 570 may be mechanically connected to the control eccentric 514. Likewise, both cleaning devices 530, 570 can be actuated by means of an electromagnet 571 or another suitable actuating means.
  • the mechanical structure of the cleaning device 530 is shown schematically in three-dimensional view in FIG FIG. 10 shown.
  • the cleaning device 530 essentially has a carrier 532, a first cleaning element 533 and a second cleaning element 534.
  • the first cleaning element 533 is guided linearly displaceable on the carrier 532.
  • the carrier 532 is arranged such that the displacement direction T is orthogonal to a first friction surface 561 of the counterpart 560.
  • a first scraping edge 536 is further formed on the first cleaning element 533. Due to the linear displacement of the first cleaning element 533, the first scraping edge 536 can be brought into abutment with the first friction surface 561.
  • the second cleaning element 534 is pivotally mounted on the carrier 532, wherein the pivot axis 535 is vertical to the plane containing the displacement direction of the first cleaning element 533 is arranged.
  • a second scraping edge 537 is formed at the second cleaning element 534.
  • the first cleaning element 533 has a gap 538 into which a transmission nose 539 formed on the second cleaning element 534 engages. When the first cleaning member 533 is linearly displaced, this movement is transmitted to the second cleaning member 534 due to the engagement of the transmission nose 539 in the gap 538 and is converted into a pivotal movement.
  • This pivotal movement has the consequence that the second scraping edge 537 is pivoted toward a second friction surface 562 of the counterpart 560 until the second scraping edge 537 touches the second friction surface 562 at the same time as the first scraping edge 536 touches the first friction surface 561.
  • each braking device can be combined with any configuration of the cleaning device.
  • each illustrated brake device may be provided with a fluid source and a delivery device as shown in FIG FIG. 6 is shown to be provided to influence the friction between the friction surface and the effective surface.

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EP12169410.3A 2012-05-25 2012-05-25 Système de freinage doté dýun dispositif de nettoyage Withdrawn EP2666743A1 (fr)

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EP12169410.3A EP2666743A1 (fr) 2012-05-25 2012-05-25 Système de freinage doté dýun dispositif de nettoyage

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EP12169410.3A EP2666743A1 (fr) 2012-05-25 2012-05-25 Système de freinage doté dýun dispositif de nettoyage

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EP (1) EP2666743A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015177234A1 (fr) * 2014-05-20 2015-11-26 Wittur Holding Gmbh Dispositif de sécurité pour faire fonctionner un ascenseur
DE102014224196A1 (de) * 2014-11-26 2016-06-02 Thyssenkrupp Ag Aufzugsbremssystem und Verfahren zum Bremsen einer Kabine einer Aufzuganlage
EP3225579A1 (fr) * 2016-04-01 2017-10-04 Otis Elevator Company Ensemble de protection pour dispositif et procédé de détection de vitesse d'ensemble de freinage d'ascenseur
US10246295B2 (en) * 2016-04-06 2019-04-02 Otis Elevator Company Protective device for speed sensing device
CN115557355A (zh) * 2022-09-20 2023-01-03 日立电梯（中国）有限公司 安全钳清洁系统、方法、装置、计算机设备和存储介质
CN117623044A (zh) * 2022-08-31 2024-03-01 奥的斯电梯公司 安全制动器致动器

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DE1406199A1 (de) * 1961-08-18 1969-10-02 Loedige Alois Dipl Ing Feinstregel-Fangbremse
DE2139056B2 (de) 1971-08-04 1976-07-15 Transporttechnik Schlosser Und Wittur Ohg, 8063 Miesberg Bremsfangvorrichtung fuer aufzuege
EP0633217A2 (fr) * 1993-06-14 1995-01-11 Bt Systems Ab Grue gerbeuse
EP1502891B1 (fr) 2003-07-31 2008-08-20 Inventio AG Motorisation pour la marche ou la palette d'un escalator
JP2008254837A (ja) * 2007-04-02 2008-10-23 Mitsubishi Electric Corp エレベータ用非常止め装置
EP1930282B1 (fr) 2006-12-05 2010-08-04 Inventio AG Dispositif de freinage destiné à arrêter et à freiner une cabine d'ascenseur dans une installation d'ascenseur
JP2010254466A (ja) * 2009-04-28 2010-11-11 Hitachi Ltd エレベーターの非常止め装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1406199A1 (de) * 1961-08-18 1969-10-02 Loedige Alois Dipl Ing Feinstregel-Fangbremse
DE2139056B2 (de) 1971-08-04 1976-07-15 Transporttechnik Schlosser Und Wittur Ohg, 8063 Miesberg Bremsfangvorrichtung fuer aufzuege
EP0633217A2 (fr) * 1993-06-14 1995-01-11 Bt Systems Ab Grue gerbeuse
EP1502891B1 (fr) 2003-07-31 2008-08-20 Inventio AG Motorisation pour la marche ou la palette d'un escalator
EP1930282B1 (fr) 2006-12-05 2010-08-04 Inventio AG Dispositif de freinage destiné à arrêter et à freiner une cabine d'ascenseur dans une installation d'ascenseur
JP2008254837A (ja) * 2007-04-02 2008-10-23 Mitsubishi Electric Corp エレベータ用非常止め装置
JP2010254466A (ja) * 2009-04-28 2010-11-11 Hitachi Ltd エレベーターの非常止め装置

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015177234A1 (fr) * 2014-05-20 2015-11-26 Wittur Holding Gmbh Dispositif de sécurité pour faire fonctionner un ascenseur
DE102014224196A1 (de) * 2014-11-26 2016-06-02 Thyssenkrupp Ag Aufzugsbremssystem und Verfahren zum Bremsen einer Kabine einer Aufzuganlage
EP3225579A1 (fr) * 2016-04-01 2017-10-04 Otis Elevator Company Ensemble de protection pour dispositif et procédé de détection de vitesse d'ensemble de freinage d'ascenseur
CN107265240A (zh) * 2016-04-01 2017-10-20 奥的斯电梯公司 用于电梯制动组件速度传感装置的保护组件和保护方法
US10112803B2 (en) 2016-04-01 2018-10-30 Otis Elevator Company Protection assembly for elevator braking assembly speed sensing device and method
CN107265240B (zh) * 2016-04-01 2020-07-07 奥的斯电梯公司 用于电梯制动组件速度传感装置的保护组件和保护方法
US10246295B2 (en) * 2016-04-06 2019-04-02 Otis Elevator Company Protective device for speed sensing device
CN117623044A (zh) * 2022-08-31 2024-03-01 奥的斯电梯公司 安全制动器致动器
EP4332044A1 (fr) * 2022-08-31 2024-03-06 Otis Elevator Company Actionneur de frein de sécurité
US11970367B2 (en) 2022-08-31 2024-04-30 Otis Elevator Company Safety brake actuator
CN115557355A (zh) * 2022-09-20 2023-01-03 日立电梯（中国）有限公司 安全钳清洁系统、方法、装置、计算机设备和存储介质

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