EP2560910A1 - Elevator system with a brake device which is arranged on the elevator car - Google Patents
Elevator system with a brake device which is arranged on the elevator carInfo
- Publication number
- EP2560910A1 EP2560910A1 EP11714978A EP11714978A EP2560910A1 EP 2560910 A1 EP2560910 A1 EP 2560910A1 EP 11714978 A EP11714978 A EP 11714978A EP 11714978 A EP11714978 A EP 11714978A EP 2560910 A1 EP2560910 A1 EP 2560910A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- brake
- shaft
- elevator
- elevator installation
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
- B66B9/022—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by rack and pinion drives
-
- 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
Definitions
- the present invention relates to a
- Elevator installation in which an elevator car and a counterweight run along guide rails in an elevator shaft and are driven in opposite directions.
- the invention relates
- a braking device for the elevator car or for the elevator installation.
- Elevator cars usually have one
- This safety gear is by a
- Speed limiter triggered and sets the elevator car at a nominal speed exceeded by means of wedge brakes on the guide rails.
- a braking device is used, which is coupled to a drive and, for example, ensures that the elevator car is held precisely at the height of each floor door.
- the drive of the elevator car usually takes place by means of a traction sheave around which the carrying and propellant means are guided.
- Braking device is held.
- Self-propelled drives are flat drives.
- the flat drives are on opposite sides
- Flat drive has a sprocket which engages in complementary teeth, which are provided on the guide structures. A rotational movement of the ring gear is thus converted into a vertical movement of the elevator car.
- the ring gear is in connection with a brake disc, which acts on a disc brake.
- the object of the present invention is a reliable braking device for an elevator installation
- the braking device avoids the disadvantages of a arranged on a stationary traction sheave drive brake and the disadvantages of a arranged on a moving gear drive brake.
- the braking device is preferably attached to the support frame.
- the braking device is preferably on the support frame attached.
- An embodiment variant of a brake device for an elevator system has a gear wheel which engages in a rack on the guide rail or recesses in the guide rail, that lateral play the
- the gear is by means of a shaft with a
- Brake disc connected, which is taken by a pair of brake shoes during braking.
- the shaft may be integral and rigid, but preferably it is two-piece and connected to a serrated coupling so that an axial compensation displacement can take place between the gear and the brake disc along the axis of rotation of the shaft.
- the wave or can can be any shape. Furthermore optionally, the wave or can be any shape.
- Shaft pieces on this and beyond the serrated coupling be configured or made of a material such that the transmission of the braking torque occurs damped or elastic.
- the same result can also be achieved with one or more flexible couplings. In this way, the response of the brake or the ride comfort of the elevator car can be improved.
- a further preferred embodiment variant of an inventive brake device provides not only a gear, but two gears ago, concentric
- the first gear has a slightly larger diameter and a
- the teeth will give it first gear after and thereby come the teeth of the second, harder gear with the rack or the recesses in the guide rail in contact.
- the first gear can
- Gear can also be achieved by the first gear and the second gear is not rigid, but connected to each other by means of a defined flexible coupling.
- the teeth of the first gear can be rigid in this case.
- Rack or the recesses in the guide rod may be straight, but also obliquely or helically shaped.
- the bearing of the gears on the shaft can be done with a serrated coupling, so that an axial compensation shift of the gears on the shaft at curvatures in the course of
- Guide rail track can be done.
- the braking device may each have a shaft or coupled with a serrated coupling shaft pair, each with a gear pair and one brake disc per guide rail.
- the gear pairs for two guide rails by means of a single shaft or coupled with serrated couplings shaft assembly are interconnected.
- This embodiment variant may have a single, preferably centrally arranged brake disc.
- a braking device as a static holding brake, but also as a dynamic brake.
- the brake device is actuated only when the elevator car is stationary.
- the braking device can also be used to decelerate the elevator car and completely invade when the elevator car has reached its position.
- a brake device which is designed as a dynamic brake, may further be equipped with a brake energy recovery system by a further toothing is provided on the end face of the brake disc, in which engages a gear of a generator.
- the generator unfolds by its power generation a braking effect, which is preferably designed weaker than the maximum braking effect of the brake shoes on the brake disc. The energy thus obtained is fed into a battery and stands for the power supply of the
- the braking device or one with a
- Brake device equipped elevator system has compared to a conventional braking device or against a
- FIG. 1 is a schematic representation of an elevator system according to the prior art, with a first brake device or
- Fig. 2 is a schematic representation of an elevator system, with a second braking device also on the
- Fig. 3 is a schematic and perspective partial representation of a first embodiment variant of a second
- Fig. 4 is a schematic and sectional partial view of a second embodiment variant of a second
- Fig. 5 is a partial schematic representation of a third
- Embodiment variant of a second brake device Embodiment variant of a second brake device.
- Fig. 1 shows an elevator system 100 with a movable in an elevator shaft 1 elevator car 2, which is connected via a support and propellant 3 with a counterweight 4.
- the carrying and propellant 3 is driven during operation with a traction sheave 5 of a drive unit 6.
- Elevator car 2 has an upper yoke or support frame 28a and a lower yoke or support frame 28b.
- the elevator car 2 and the counterweight 4 are made by means of guide rails 7a and 7b extending over the shaft height for the elevator car 2, and a guide rail 7 c for the counterweight 4 out.
- the elevator installation 100 has a top floor with a top floor door 8, a second upper floor with a second upper floor door 9, further floors with a further floor door 10 and a bottom floor with a lowermost floor door 11.
- a double lever 14a and 14b is arranged on two opposite sides of the elevator car 2, which are each hinged to the elevator car 2 at a pivot point 15a and 15b. Furthermore, the double lever 14a by means of a cable coupling 27 with a limiter rope 19 of the
- the governor rope 19 is in the shaft head 12 via a pulley 29 of the
- Speed limiter 13 monitors. When the elevator car 2 is overspeed, the speed limiter 13 blocks the cable pulley 29, the elevator car 2, in the illustrated embodiment, dragging the governor rope 19 over the pulley 29.
- Vertex in the pivot point 15b is hinged to the elevator car 2.
- the pressure of the connecting rod 18 thus generates a rotation of the double lever 14b and this in turn is transmitted with a linkage 17b as a pulling movement to the second wedge brake 16b.
- the linkage 17a and 17b and the wedge brakes 16a and 16b form an exemplary emergency safety device or first braking device 200 of the elevator system 100.
- the wedge brakes 16a and 16b is triggered not by pulling, but by pushing or it is possible to arrange the connecting rod 18 so that they are in the
- Actuation case is loaded on train.
- the endless governor rope 19 is by means of in the
- Shaft pit 20 arranged deflection pulley 21 tensioned, wherein a roller shaft bearing 22 is hinged at one end to a pivot point 23 and at the other end carries a tension weight 24.
- the support and propellant 3, as well as the governor rope 19, may be a steel wire or aramid rope, a belt or a wedge or V-ribbed belt.
- Buffer 25 a arranged for the counterweight 4, and two buffers 25 b and 25 c for the elevator car. 2
- the elevator installation 100 conventionally has a second braking device 300 for normal operation, which essentially consists of two traction sheave brakes 31a and 31b which, if necessary, brake the traction sheave 5 or hold it at a standstill.
- Fig. 2 shows schematically an elevator system 100a, which is characterized in that a second braking device 300 for normal operation, which essentially consists of two traction sheave brakes 31a and 31b which, if necessary, brake the traction sheave 5 or hold it at a standstill.
- Fig. 2 shows schematically an elevator system 100a, which is characterized in that a second
- Brake device 300a for normal operation is no longer on the traction sheave 5 or the drive unit 6 is arranged, but on an elevator car 2a or on the counterweight 4.
- This second brake device 300a comprises two brakes 32a and 32b, which is brakes on guide rails 7d and 7e and is shown schematically and the sake of clarity of the figure on an upper yoke or upper support frame 28c arranged.
- the brake device 300a may also be arranged together with the wedge brakes 16a and 16b of the safety gear 200 on the lower yoke and lower support frame 28b.
- the second brake device 300 can also take over the task of the first brake device 100. In this case, the second brake device operates as a service brake and in an emergency as a safety brake.
- the elevator car or the counterweight is then provided only with the second brake device 300.
- Fig. 3 is in a schematic
- Elevator system 100a of Fig. 2 may be configured and together form the second brake device 300a.
- Guide rail 7d has the cross section of a U-profile and thus a first edge for the guidance of a guide shoe 33 which is fixedly connected to the elevator car 2a, not shown, or with the yoke or support frame 28c.
- a second flank of the U-profile of the guide rail 7d has a series of recesses 34 in which engage teeth of a first gear 35 and a smaller, concentrically mounted second gear 36. These two gears 35 and 36 form a gear pair 52.
- the flank of the guide rail 7 d with the row of recesses 34 may also be formed as a rack 34.
- the second gear 36 is preferably integrally rotated together with a shaft 37 preferably made of metal.
- the gear 35 is made of plastic or rubber and larger than the second gear 36 and attached thereto.
- the recesses 34 are preferably wider than tooth pairs 43, which are each formed by the teeth of the first gear 35 and the teeth of the second gear 36.
- the shaft 37 may not shown in detail
- the shaft 37 is further bolted by means of screw 40a-40d with a brake disc 38, in favor of a
- Brake shoes 41a and 41b is braked or held, is formed in a downward movement 44 shown as an example of the elevator car 2a, a braking torque M, the against a
- Rotary movement 45 of the shaft 37 acts.
- the teeth of the first gear 35 and the first gear 35 are self-decreasing and the teeth of the second gear 36 engage with the recesses 34.
- the brake shoes 41a and 41b are open, or
- Torque M is low, remain only the teeth of the first gear 35 in engagement with the recesses 34. With unbraked disc 38 form the teeth of the first
- Gear 35 at the recesses 34 with the guide rail 7d a positive connection.
- the teeth of the second gear 36 form a positive connection with the recesses 34 with the guide rail 7d.
- a second embodiment variant of a second braking device 300b in an elevator system 100b is shown schematically.
- a first guide rail 7f and a second guide rail 7g are arranged in pairs and each form a square profile 51a or 51b and an angle profile 50a or 50b.
- the square profiles 51a and 51b are respectively enclosed by a guide shoe 33a and 33b in a U-shape and lined with sliding surfaces 46a-46c and 46d-46f.
- Guide shoes 33a and 33b are attached to a support frame 28d of an elevator car 2b.
- the angle profiles 50a and 50b have recesses 34a and 34b, engage in the respective teeth of a first gear 35a and 35b and a second, smaller, concentrically arranged gear 36a and 36b.
- the gears 35a and 36a form a gear pair 52a
- the gears 35b and 35b form a pair of gears 52b, each of which is secured by a safety shoe 47a and 47b, respectively, against axial displacements along a gear pair 52b
- Rotation axis 42a are secured.
- the second brake device 300b in contrast to the second brake device 300a of FIG. 3 further comprises a common shaft 37a, which is preferably rotated integrally with a brake disc 38a.
- the brake disk 38a is preferably rotated integrally with a brake disc 38a.
- Brake shoes 41c and 41d form a single brake 32b instead of two as in the brake device 300a of FIG. 3.
- the shaft 37a and the gear pairs 52a and 52b are positively connected to each other by opposite shaft pieces 55a and 55b of the shaft 37a are each inserted by means of a serrated coupling 48a and 48b in shaft flanges 49a and 49b.
- a transmission of a braking torque Mi (depending on the direction depending on the upward or downward movement of the elevator car 2b) on the gear pairs 52a and 52b or on the angle sections 50a and 50b of
- Fig. 5 shows schematically a third
- Embodiment variant of a second brake device 300c is provided.
- a guide rail 7h provides a helical rack or toothing 34c for a first gear 35c.
- This first gear 35c is still made of soft, deformable material and ensured by a connection 53 with a shaft 37b, the co-rotation of a brake disc 38b, which is disposed between the brake shoes 41e and 41f and so forms a brake 32c.
- opposite braking torque M 2 builds up, transmits in itself entangling first gear 35c of this braking torque M 2 by means of a connection 53 annularly surrounding flexible coupling 54 on a second gear 36 c, the teeth only under this load in a separate, only intended for this purpose series of recesses 34 d engage. Otherwise, without load, the teeth of the second gear 36c run freely and without any contact with the recesses 34d.
- this second gear 36c made of solid, torsionally rigid material, but thanks to the flexible coupling 54 absorbs a correspondingly large braking torque M 2 damped.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11714978.1A EP2560910B1 (en) | 2010-04-19 | 2011-04-15 | Lift assembly with a brake device attached to the lift cabin |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10160328 | 2010-04-19 | ||
EP11714978.1A EP2560910B1 (en) | 2010-04-19 | 2011-04-15 | Lift assembly with a brake device attached to the lift cabin |
PCT/EP2011/055984 WO2011131572A1 (en) | 2010-04-19 | 2011-04-15 | Elevator system with a brake device which is arranged on the elevator car |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2560910A1 true EP2560910A1 (en) | 2013-02-27 |
EP2560910B1 EP2560910B1 (en) | 2015-01-14 |
Family
ID=42732216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11714978.1A Not-in-force EP2560910B1 (en) | 2010-04-19 | 2011-04-15 | Lift assembly with a brake device attached to the lift cabin |
Country Status (3)
Country | Link |
---|---|
US (1) | US8646580B2 (en) |
EP (1) | EP2560910B1 (en) |
WO (1) | WO2011131572A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2836031C (en) * | 2013-12-06 | 2017-11-21 | Jean-Francois Benoit | An elevator system, with two emergency safety brake devices |
US9975733B2 (en) | 2015-01-26 | 2018-05-22 | Kevin Cunningham | Elevator safety device |
WO2017031587A1 (en) | 2015-08-24 | 2017-03-02 | Smith David W | Compact portable lift assembly |
NL2019467B1 (en) * | 2017-08-30 | 2019-03-11 | Raxtar B V | Fall protection for a lift and lift equipped with fall protection |
CN107673156A (en) * | 2017-11-23 | 2018-02-09 | 武汉过控科技有限公司 | A kind of car moves method for limiting speed |
US20220177273A1 (en) * | 2020-12-04 | 2022-06-09 | Otis Elevator Company | Autonomous elevator car mover configured for derailment prevention |
CN114348822B (en) * | 2021-12-14 | 2022-09-27 | 江苏省特种设备安全监督检验研究院 | Safety protection device for elevator maintenance |
EP4273081A1 (en) | 2022-05-05 | 2023-11-08 | Otis Elevator Company | Elevator car with electronic safety actuator |
CN115303916B (en) * | 2022-08-18 | 2023-06-30 | 厦门市特种设备检验检测院 | Braking device capable of braking with high precision for traction elevator and use method of braking device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US249076A (en) * | 1881-11-01 | Elevator-stop | ||
US3415343A (en) * | 1967-04-18 | 1968-12-10 | Alimak Verken Ab | Catch apparatus for the cages of scaffold elevators and the like |
US4519264A (en) * | 1982-12-28 | 1985-05-28 | Toyota Jidosha Kabushiki Kaisha | Gear assembly for eliminating knocking noises in transmission |
FR2667305B1 (en) * | 1990-10-02 | 1992-12-04 | Prudhomme Dominique | LARGE TEMPLATE LOADER. |
JPH04365772A (en) * | 1991-06-13 | 1992-12-17 | Toshiba Corp | Braking device for elevator |
JP2774250B2 (en) * | 1994-12-19 | 1998-07-09 | 関西電力株式会社 | Elevator |
GB9823599D0 (en) * | 1998-10-28 | 1998-12-23 | Lucas Ind Plc | Brake assembly |
JP2004051246A (en) * | 2002-07-16 | 2004-02-19 | Sansei Kenki Kk | Shock absorbing device in elevator for construction |
US6811509B1 (en) * | 2002-09-03 | 2004-11-02 | Hydro-Gear Limited Partnership | Hydraulic motor apparatus including brake mechanism |
EP2303750B1 (en) * | 2008-07-23 | 2013-10-09 | Inventio AG | Elevator assembly with self-driving elevator cabin |
-
2011
- 2011-04-15 EP EP11714978.1A patent/EP2560910B1/en not_active Not-in-force
- 2011-04-15 WO PCT/EP2011/055984 patent/WO2011131572A1/en active Application Filing
- 2011-04-18 US US13/088,807 patent/US8646580B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011131572A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011131572A1 (en) | 2011-10-27 |
US8646580B2 (en) | 2014-02-11 |
EP2560910B1 (en) | 2015-01-14 |
US20110253485A1 (en) | 2011-10-20 |
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