EP3638611A1 - Bremse für eine aufzugsanlage - Google Patents
Bremse für eine aufzugsanlageInfo
- Publication number
- EP3638611A1 EP3638611A1 EP18732001.5A EP18732001A EP3638611A1 EP 3638611 A1 EP3638611 A1 EP 3638611A1 EP 18732001 A EP18732001 A EP 18732001A EP 3638611 A1 EP3638611 A1 EP 3638611A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- spring
- pivoting
- guide
- brake lever
- 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
- 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
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/365—Means for stopping the cars, cages, or skips at predetermined levels mechanical
Definitions
- the invention relates to a brake for an elevator installation, in particular a safety brake.
- a safety brake is used to slow down the car of an elevator installation in an emergency, for example, if too high a speed was detected, in extreme cases, when breaking the suspension element.
- the safety brake also serves to brake quickly in the event that two cars have insufficient safety distance from each other.
- a maximum braking force is provided by the safety brake;
- a dosage of the braking force usually does not occur in safety brakes.
- wedges or eccentrics are mechanically applied to the rail in the safety brakes, which automatically move in the onward travel of the car to a defined end point.
- an elastic element such as a plate spring package or the housing itself is widened so far that the desired normal force is created to generate the necessary braking force between the friction linings and the rail.
- the spring characteristic can be made very hard, since only manufacturing tolerances and wear of the brake pads must be compensated.
- the spring elements can be made relatively small and inexpensive and the working distances are very low.
- these safety brakes have the disadvantage that from the activation of the brake to its full effect always the Einzugsweg the wedges or eccentric must be covered.
- the car may continue to accelerate during the retraction process. Both can lead to the car coming to a standstill later. Once the brake has been retracted, it can only be deactivated again by moving the car in the opposite direction, which makes possible an emergency release.
- brakes without wedges or eccentrics are known.
- the brake pads are acted upon directly with the required normal force.
- the spring elements are also usually small and inexpensive, the brake pads are by means of a linear movement
- EP 2 338 821 A1 discloses a safety brake in forceps construction. This comprises two brake levers which are rotatable relative to each other. At a first end of the brake lever respectively brake pads are provided, between which the guide rail is arranged. At a second end of the brake lever springs and / or actuators are provided which the
- the object underlying the invention is achieved by a brake, a brake assembly, an elevator installation and a method according to the main claims; preferred embodiments will be apparent from the dependent claims and the description.
- the brake according to the invention is in particular catch brake and is suitable for a
- the brake is designed in a clamp design.
- the brake comprises: two brake shoes, a first brake lever and a second brake lever, which are rotatably connected to each other via a hinge, a spring arrangement, which is arranged to act on the first brake lever relative to the second brake lever in a first direction, an actuator assembly which selectively to Actuation of the first brake lever relative to the second brake lever is arranged in a second direction.
- the brake levers are set up, depending on the admission by the
- the spring arrangement comprises at least one cup spring package, each having one or more disc springs.
- disc springs have an increased robustness against lateral kinking away. Compared to coil springs have plate springs due to design a harder spring characteristic at comparable spring forces. As a result, fewer paths are required to provide the forces. This has the advantage that a pivoting of the brake lever is sufficient with a smaller angle. Expensive measures to reduce the tendency to bend are therefore superfluous.
- disc springs in particular springs according to the standard DIN 2093 are understood.
- a plate spring viewed in the effective direction of the plate spring has a length which is less than a diameter of the plate spring.
- the first brake lever has a first spring contact surface and the second
- Brake lever on a second spring contact surface which serves to bear one of the at least one plate spring packets.
- the spring contact surface may be formed by a separate element; does not have to be integrally formed with the other areas of the brake lever.
- the brake is designed such that in a first operating state, the two spring contact surfaces have a first pivoting to each other and in a second operating state, a second pivoting each other,
- first pivot and the second pivot have different signs. This means, in particular, that there is a parallel position of the two spring contact surfaces during the transfer of the brake from the released operating state to the active operating state.
- the pivoting (specified by an angle) refers to each other in the direction of view parallel to the axis of rotation of the two brake levers; For example, the first panning has a positive value, and the second panning has a negative value.
- the pivoting is therefore understood to mean the angle which the two planes of the spring contact surfaces occupy with respect to one another.
- the pivoting is defined by an intersection angle of two straight lines, each of these straight lines is aligned perpendicular to each of a spring contact surface. If the two spring contact surfaces are aligned parallel to each other, the pivoting is 0 °. In this case, the respective smaller value is taken into account, e.g. -5 ° instead of -175 °.
- the larger amount of the two Verschwenkungen a maximum
- Pivoting represents, and the amount of the difference of the two Verschwenkungen represents a swivel range, wherein the ratio of swivel range and maximum pivoting is greater than 1.
- the spring contact surface are thus pivoted about a pivoting range which is greater than the maximum pivoting. Accordingly, it is advantageous if the pivoting is as small as possible, at the same time the pivoting range is as large as possible.
- the ratio of the swivel range and maximum pivoting is greater than 1.5, in particular this is 2, which represents the optimum value.
- half of the complete pivoting range lies on one side and the other side of the parallel position.
- the amount of the first pivoting is at most 6 ° and / or the amount of the second pivoting is at most 6 °.
- the spring arrangement comprises a guide element with a cylindrical guide portion, wherein the guide portion in a central opening of the
- Disc spring pack is added.
- the guide element holds the plate spring package with several disc springs radially together. On an exact cylindrical guide surface, it does not matter, but rather also sufficient broken guide surfaces, but in total have a cylindrical enclosure.
- the guide element comprises a stop portion, wherein the
- the spring arrangement comprises two plate spring packets, wherein each plate spring packet comprises a guide element a stop portion, wherein the two guide elements are fixedly connected to each other.
- a distance of the abutment portions of the two guide elements is in particular adjustable to one another, in particular based on a separate spacer element arranged between the two guide elements or by means of a threaded element. Between the two guide elements, a separate spacer element is arranged. This makes it possible to realize a simple way of mounting. Vorzugsswiese are the two guide elements each at their
- Stop sections firmly connected. By selective selection of the spacer, the bias of the spring assembly can be adjusted.
- the invention further relates to a brake assembly with an aforementioned brake and a guide rail which interacts with the brake.
- the invention further relates to an elevator system with a car, which is within a
- Shaft is movable in one direction.
- the car is through at least one
- the elevator installation comprises at least one brake
- the invention further relates to a method for mounting such a brake, the method comprising the following method steps:
- the two guide elements can each be attached to each other at the stop portion.
- Figure 1 is a brake according to the invention in a perspective view
- Figure 2 shows the brake of Figure 1 in plan view
- FIG. 3 shows a brake lever of the brake of Figure 1 in a perspective view
- Figure 4 shows two brake levers of the brake of Figure 1 in plan view
- Figure 5 shows the brake of Figure 1 in perspective view in a first phase of assembly.
- FIG. 6 shows the brake according to FIG. 1 in a perspective view in a second phase of the assembly
- FIG. 7 shows an elevator installation according to the invention with a brake according to FIG.
- FIG. 7 shows an elevator installation 1 according to the invention.
- the elevator installation 1 comprises a shaft 5, in which a car 2 is movably received.
- the car 2 is guided by guide rails, in principle, a guide rail 4 may be sufficient.
- a cable drive with a cable 3 and a drive motor, not shown the car is driven.
- the drive can also be done in other ways, for example by means of a linear drive.
- two brakes 10 according to the invention are arranged, which can be activated in particular when the car 2 must be slowed down unscheduled and fast, for example in the case of a Tragstoffbruchs.
- the brake is in particular a safety brake.
- the braking force of such safety brakes is in particular not metered during operation.
- the brake 10 will be described with reference to Figures 1 to 6 in more detail.
- the brake 10 is designed in pliers construction.
- the brake 10 has a first brake lever 12A and a second and brake lever 12B.
- the two brake levers 12 are formed exactly identical in the present case, but they do not have to be formed exactly identical.
- only a brake lever 12 is described as representative of both brake levers 12A, 12B, the construction of the brake lever 12 can best be seen in FIG.
- the brake lever 12 has an operative portion 21, a hinge portion 22 and a
- a possibility for fixing a brake shoe 14 (see Figures 1 and 2) is provided.
- the possibility of fixing a brake shoe 12 is a brake shoe bore 31 to which the brake shoe 14 is pivotally mounted by means of a bolt.
- the axis Y of the brake shoe bore 31, which consequently represents the axis of rotation of the brake shoes 14, is aligned parallel to the direction of travel F (see FIG. 2).
- the brake lever 12 a At the joint portion 22, the brake lever 12 a
- the brake lever 12 has a spring plate 24 with a
- Spring contact surface 25 on which a spring assembly 15 (see Figures 1 and 2) can be applied.
- spring arrangement 15 has two disk spring assemblies 51A, 51B.
- a circumferential guide edge 26 of the spring plate 24 limits the spring contact surface 25. The guide edge 26 prevents lateral breakage of springs of the adjacent
- the brake lever 12 on the actuating portion 23 comprises an actuator opening 28, through which the actuating rod 62 defined further below is passed.
- the hinge portion 22 is disposed between the operating portion 23 and the operative portion 21.
- the brake levers 12 A, 12 B are connected to two mounting plates 11.
- the brake 10 is attached to the car 2.
- the brake levers 12 are in this case arranged such that the active portions 21 move towards each other when the actuating portions 23 move away from each other.
- the kinematics of the present brake 10 differs from the kinematics of conventional tongs, e.g. a pipe wrench.
- FIG. 2 shows the brake 1 in a first, released operating state.
- the brake levers 12 hold in this first operating state, the brake shoes 14 at a distance from the guide rail 4.
- the brake has an actuator 16 with an actuator 61 and a
- Actuator 62 on.
- the actuator assembly 16 is set up, the two Actuating sections 23 act on each other in the second direction R2, so that the respective effective portions 21 of the two brake levers 12A, 12B are acted upon away from each other.
- the actuator 61 is designed as a hydraulic Switzerlandaktuator, but other actuators are possible.
- the pulling force of the actuator counteracts a spring force of the cup spring assemblies 51A 51B.
- the plate spring assemblies 51A, 51B act on the spring contact surface 25 and thus the actuating portions 23 in a first direction Rl away from each other.
- the effect (here the leverage) of the actuator assembly 16 in the second direction R2 is stronger than the action of the spring assembly 15 in the first direction R1.
- Actuation eliminates the force of the actuator 61; the actuator assembly 16 can now not sufficiently act on the two actuating portions 23 in the first direction Rl to each other. Due to the spring force of the disk spring assemblies 51, the brake shoes 14 are acted upon each other at the operative portions 21 and clamp the guide rail 4 between them. Under the first direction Rl is basically understood in the context of this embodiment, that the spring contact surfaces 25 of the two brake levers 12A, 12B move away from each other. Under the second direction R2 is basically in the context of this
- Embodiment understood that the spring contact surfaces 25 of the two brake levers 12A, 12B to move towards each other. Particular importance is attached to the spring contact surfaces, reference is made below to FIG. 4, in which the brake levers 12A, 12B are shown in isolation.
- Figure 4a shows the brake levers 12A, 12B in the first dissolved operating state I
- Figure 4c shows the
- Brake levers 12A, 12B in the second active operating state II.
- the brake levers are shown in an intermediate position, which occupies the brake lever 12A, 12B briefly in the transition from the first operating state to the second operating state.
- Pivoting range on one side of the parallel position For example, a pivoting in the first operating state could be at + 2 °, while a pivoting in the second
- a ratio of 1.0 is when the first or second pivot is 0 °.
- Angle data can not be derived clearly from the geometry of the brake levers.
- a plane surface can be thought-out for angle determination;
- the constructed flat surface is aligned equal to the angular position of the plate spring, since it finally arrives at its angular position.
- the first cup spring package 51A is mounted.
- a first guide element 52A is introduced with an outer cylindrical guide portion 53 in a central opening 58 of the disc springs 59 until an axial stop portion 54 of the guide member 52A on a first side in abutment with the disc springs 59.
- the axial stop 54 has a larger diameter than the opening 58 of the disc springs 59.
- the plate springs 59 are applied to the spring abutment surface 25A of the first brake lever 12A.
- the same Steps are taken for the second cup spring package 51B corresponding to the second brake lever 12B and a second outer cylindrical guide member 52BA.
- the axial guide element 52A is introduced with an outer cylindrical guide portion 53 in a central opening 58 of the disc springs 59 until an axial stop portion 54 of the guide member 52A on a first side in abutment with the disc springs 59.
- the axial stop 54 has a larger diameter than the opening 58 of the disc springs 59.
- Stopper portions 54 of the two guide elements 52 are directed towards each other. Subsequently, the two guide elements 52A, 52B are fastened together. This can be done by a screw (nut 57, screw 56) each facing each other
- Stops 54 take place.
- the screw 56 is guided through an opening 63 in the guide element.
- a higher-level guide element is produced from the two individual guide elements 52A, 52B.
- a spacer can be used as a spacer element, whereby the bias of the spring assembly is adjusted.
- the opening 63 in the guide element can be formed as a threaded bore, with a screw 56 complementary internal thread.
- the rotational position can be fixed by a lock nut.
- the two brake levers 12A, 12B are screwed to the mounting plates 11, whereby the term "plate" is to be understood widely and does not require a planar shape
- the axis of rotation X between the brake levers 12 to each other is aligned parallel to
- Driving direction F in which also the braking force acts.
- the braking force has no
- a plate spring viewed in the effective direction of the plate spring has a length L which is less than a diameter D of the plate spring.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Braking Arrangements (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017209888.0A DE102017209888A1 (de) | 2017-06-12 | 2017-06-12 | Bremse für eine Aufzugsanlage |
| PCT/EP2018/065330 WO2018228983A1 (de) | 2017-06-12 | 2018-06-11 | Bremse für eine aufzugsanlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3638611A1 true EP3638611A1 (de) | 2020-04-22 |
| EP3638611B1 EP3638611B1 (de) | 2025-03-12 |
Family
ID=62636181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18732001.5A Active EP3638611B1 (de) | 2017-06-12 | 2018-06-11 | Bremse für eine aufzugsanlage |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20200180909A1 (de) |
| EP (1) | EP3638611B1 (de) |
| CN (1) | CN110753671B (de) |
| DE (1) | DE102017209888A1 (de) |
| FI (1) | FI3638611T3 (de) |
| WO (1) | WO2018228983A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240182266A1 (en) * | 2015-01-26 | 2024-06-06 | Hydrasafe Brake, Llc | Elevator safety braking device |
| EP3674248B1 (de) * | 2018-12-31 | 2022-09-07 | KONE Corporation | Aufzugkabinenfeststellbremse |
| US12434943B2 (en) * | 2020-07-31 | 2025-10-07 | Otis Elevator Company | Beam climber active brake health monitoring system |
| CA3227553A1 (en) * | 2024-01-26 | 2025-04-17 | Hydrasafe Brake, Llc | Elevator safety braking device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4085849A (en) * | 1976-02-10 | 1978-04-25 | Richard Jablin | Machinery locating device |
| US5255760A (en) * | 1991-10-02 | 1993-10-26 | Inventio Ag | Apparatus for detecting and signaling the function and status of an elevator safety brake |
| JPH09267983A (ja) * | 1996-03-29 | 1997-10-14 | Mitsubishi Electric Corp | リニアモータ駆動方式移動体装置 |
| US7350774B2 (en) * | 2004-09-07 | 2008-04-01 | Danly Iem, Llc | Long travel, high force combination spring |
| ES2425488T3 (es) * | 2008-07-11 | 2013-10-15 | Inventio Ag | Dispositivo de retención con elemento acumulador de fuerza |
| JP5213963B2 (ja) | 2008-10-24 | 2013-06-19 | 三菱電機株式会社 | エレベータ |
| CH707833A1 (de) * | 2013-03-28 | 2014-09-30 | Phoenix Mecano Komponenten Ag | Aufzugsanlage mit einer Bremsvorrichtung. |
| CN203450989U (zh) * | 2013-08-07 | 2014-02-26 | 三洋电梯(珠海)有限公司 | 一种电梯轿厢钳式防溜动安全装置 |
| CN203461656U (zh) * | 2013-08-12 | 2014-03-05 | 珠海顺泰电梯工程有限公司 | 一种电梯轿厢防溜动安全装置 |
| AT514823A1 (de) * | 2013-10-10 | 2015-04-15 | Cobianchi Liftteile Ag | Bremsfangvorrichtung für eine Aufzugskabine |
| CN204980881U (zh) * | 2015-05-20 | 2016-01-20 | 河南省恒远起重机械集团有限公司 | 一种门式起重机夹轨钳 |
| CN205114750U (zh) * | 2015-11-18 | 2016-03-30 | 湘潭市恒欣实业有限公司 | 能检测制动钳压力的轮边制动器 |
-
2017
- 2017-06-12 DE DE102017209888.0A patent/DE102017209888A1/de not_active Ceased
-
2018
- 2018-06-11 EP EP18732001.5A patent/EP3638611B1/de active Active
- 2018-06-11 US US16/619,561 patent/US20200180909A1/en not_active Abandoned
- 2018-06-11 CN CN201880038865.3A patent/CN110753671B/zh active Active
- 2018-06-11 WO PCT/EP2018/065330 patent/WO2018228983A1/de not_active Ceased
- 2018-06-11 FI FIEP18732001.5T patent/FI3638611T3/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| US20200180909A1 (en) | 2020-06-11 |
| DE102017209888A1 (de) | 2018-12-13 |
| EP3638611B1 (de) | 2025-03-12 |
| CN110753671A (zh) | 2020-02-04 |
| CN110753671B (zh) | 2021-12-07 |
| WO2018228983A1 (de) | 2018-12-20 |
| FI3638611T3 (fi) | 2025-06-23 |
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