EP3512794A1 - Bremsvorrichtung für eine aufzugsanlage - Google Patents
Bremsvorrichtung für eine aufzugsanlageInfo
- Publication number
- EP3512794A1 EP3512794A1 EP17768731.6A EP17768731A EP3512794A1 EP 3512794 A1 EP3512794 A1 EP 3512794A1 EP 17768731 A EP17768731 A EP 17768731A EP 3512794 A1 EP3512794 A1 EP 3512794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- actuator
- brake
- state value
- braking device
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
-
- 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
- B66B1/3476—Load weighing or car passenger counting devices
-
- 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
- B66B1/46—Adaptations of switches or switchgear
- B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
-
- 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
- B66B2009/006—Ganged elevator
Definitions
- the invention relates to a braking device for an elevator installation, to an elevator installation and to a method for setting an actuation force of a braking apparatus.
- a crash of the cabin e.g. the carrying rope breaks, prevented by a safety gear.
- the braking force of the safety gear is set to medium payload of the elevator system. Only when the cab is loaded with the middle payload, there is an optimal deceleration of the car. If the payload is higher than the average payload, the safety gear slows down the cab less, which leads to the extension of the braking distance. If the payload is less than the average payload, the safety gear will decelerate faster and the load on components of the car will increase. This can cause damage to the elevator system and the risk of injury to the passengers increases.
- WO 2016 071141 AI discloses an elevator with a braking device.
- the braking device is designed in such a way to be used on the one hand as a service brake and on the other hand as a safety gear. Depending on the purpose of a different braking force is provided.
- a safety gear for a lift is known.
- the brake force curve is set up in such a way that the maximum braking force acting on the car is greater in a fully loaded car than in a partially loaded car. This is achieved in that the braking force increases in a ramp-like manner. If the car is not fully occupied, the car comes to a halt before the maximum braking force is fully established. However, this means conversely that when the car is fully occupied, the maximum braking force acts comparatively late on the car, and thus the braking distance for a fully occupied car is comparatively high.
- the object of the invention is to improve the brake system for elevator installation, in particular should be ensured in all load conditions optimal deceleration of the cabin and an optimal braking distance.
- the braking device is suitable for an elevator installation, which has a cabin that can be moved within an elevator shaft.
- the brake device has an actuator and a brake.
- the actuator is arranged to provide an operating force for the brake as needed.
- the brake device has a force transducer arrangement for generating a load state value of the car.
- the force transducer assembly is mechanically coupled to the actuator such that the actuation force is dependent on the load condition value.
- the term mechanical coupling expressly includes a fluid mechanical coupling, for example by means of hydraulic or pneumatic line. Alternatively or in combination also cables or levers are possible as a mechanical coupling.
- the load state value may be a value that largely reflects the load of the car in the static state. Any distorting dynamic measurement influences can be filtered.
- the actuating device makes it possible that the actuating force is optimally adjusted to the load.
- the braking device has no electronic control of the operating force, which takes into account the loading state on.
- the force transducer arrangement preferably has at least one, in particular at least three, force sensors which are set up to jointly detect a weight force of the cabin.
- the recorded weight force or forces must not be the total weight of the cabin. Rather, it may be sufficient to arrange the load cells, for example, below the cabin floor to detect parts of the soil with the load acting on it.
- the load cell assembly is configured to generate the load condition value from the sensed weight force (including any multiple detected weight forces).
- the force transducer arrangement preferably comprises a low-pass filter which is set up to filter dynamic influences of a primary value of the load state value.
- the load state values detected by the at least one force transducer may be corrupted by accelerations of the cabin. The effects of these dynamic effects can at least be reduced by the filter.
- the braking device has a stop for limiting the influence of the load state value on the actuating force.
- the influence can be limited by extreme, in particular unrealistic load state value.
- Such extreme load condition values can be caused by defects or extreme dynamic influences.
- the actuator comprises a force accumulator for providing the actuation force.
- the actuator is designed such that a bias voltage of the energy accumulator is set as a function of the load state value. The greater the bias, the greater also at least the initial actuation force.
- the actuator is designed such that the energy storage is held in a standby mode against the actuating force in a standby position in which no actuating force is applied to the brake, and held in an operating mode of the energy storage in the standby position and the operating force on the brake is applied.
- the force transducer assembly is adapted to transfer the load state value to the actuator by means of a pressurized fluid, and in particular, the actuator is configured to bias the force accumulator or at least increase a bias voltage.
- the method according to the invention comprises the following method steps: generating a loading state value of the cabin on the basis of a force transducer arrangement, transmitting the load state value from the force transducer arrangement via a mechanical coupling to the actuator, setting the actuation force as a function of the transmitted load state value.
- the invention is particularly suitable for applications in braking devices in the form of safety gears.
- a, at least temporarily, preset operating force is essentially fully recalled in case of need.
- the amount of fully to be retrieved operating force to the loading condition can be adjusted.
- FIGS. Each show
- Fig. 1 is a schematic representation of an elevator system according to the invention, which comprises a braking device according to the invention;
- Fig. 2 is a schematic representation of the components of the braking device of
- Fig. 3 a is a schematic representation of a throttle unit of the braking device according to
- FIG. 4 shows a schematic representation of the course of selected pressure and force values during operation.
- FIG. 1 shows an elevator installation 1 according to the invention which has a car 2 which is accommodated within an elevator shaft 3. Based on guide rails 4, the car 2 is held vertically movable by means not shown guide rollers.
- the elevator installation 1 furthermore comprises a braking device 5 with at least one brake 6. In the case of a defect, one or more such brakes 6 can be activated.
- the brake device 5 comprises an actuator 7, which, if necessary, provides a braking force. The braking force is transmitted via a connector 8 to the brakes 6.
- FIG. 2 shows the brake device 5 in more detail.
- the brake device thus comprises three essential components, namely the brake 6, the actuator 7 and a force transducer assembly 18th
- the actuator 7 actuates the brake 6. In this case, the actuator 7 generates, if necessary, an actuating force B, due to the brake 6 in interaction with the rail 4 occurs.
- the actuator comprises an actuating cylinder 10, in which a first working piston 13 is arranged.
- This first working piston 13 is acted upon on the one hand by a spring 9, which is dimensioned so as to apply the actuating force B.
- the first working piston 13 is retained during a standby state by a pneumatic medium 27 (eg air) present in a first working chamber 11 with a pneumatic pressure p n .
- the pneumatic pressure p n counteracts the spring 9, so that the actuator can not apply the actuating force B to the brake 6.
- a vent valve 16 is opened and the pneumatic pressure p n can escape from the first working chamber 11.
- the actuation force B that can be generated by the energy accumulator 9 can now be transmitted to the brake 6 via the connection 8.
- a gap 26 between the two working pistons 13, 14 can be acted upon by ambient pressure.
- the energy accumulator 9 is biased by a second working piston 14, which is also arranged in the actuating cylinder.
- the spring 9 counteracting a second working chamber 12 is disposed on the other side of the second working piston 14, in which a hydraulic oil 24 is received.
- the hydraulic oil 24 is pressurized by load cells 19, which is connected via a hydraulic connection 25 to the second working chamber 12.
- the load cells are accommodated below the car 2 and depending on the load of the car 2 incl.
- the cabin contents acted upon.
- a primary pressure p 19 is generated by the force transducer 19, which also represents an unfiltered hydraulic pressure value.
- at least three load cells 19 are provided to accommodate the cabin floor without tilting.
- a low-pass filter 20 in the form of a throttle arranged in the hydraulic connection 25 between the force transducers 19 and the second working chamber 12 .
- An exemplary throttle is shown in more detail in Figure 3a, the corresponding step response diagram shows Figure 3b.
- the low-pass filter 20 comprises an inlet 21, which is connected to the force transducer 19 via a first line 25i.
- the hydraulic primary pressure p 19 At the inlet 21 is the hydraulic primary pressure p 19 , which is provided by the force transducer 19.
- the inlet 21 is connected to an outlet 23, which in turn is connected to the second working chamber 12 via a second line 25 2 .
- the applied at the outlet 23 secondary pressure p 2 o which also represents a filtered hydraulic pressure value, is also in the second working chamber 12 and significantly affects the biasing force for the spring 9.
- the second line 25 2 provides the coupling between the load cell 18 and the actuator 7 dar.
- the meaning of the low-pass filter 20 will be explained with reference to the diagram of FIG. Shown is the course of the primary pressure p 19 and the secondary pressure p 20 .
- the course of the secondary pressure p 20 is shown by a solid line. Where the course of the Primary pressure p 19 from the course of the secondary pressure p 2 o is different, the course of the primary pressure p 19 is shown with a dashed line.
- the course of the primary pressure p 19 is substantially identical to a cabin load F, which acts on the force transducer 19 from above.
- the pneumatic pressure p n in the first working chamber 11 is shown above. At time t 0 , the car 2 is stationary in one floor. It opens the doors.
- a first person enters, at time t 2 a second person enters.
- the entry of the persons can be seen in each case by a step in the course of the primary pressure p 19 .
- the doors close and the car 2 moves downhill.
- the course of the secondary pressure p 20 follows with a time delay. From the time t 4 , the car 2 moves downwards at a constant speed.
- an emergency braking is initiated by opening the valve 16, wherein the pneumatic pressure p n is eliminated.
- the brake 6 is activated and decelerates until the time t 6, the car 2 completely. Due to the massive acceleration during the braking process, the primary pressure p 19 temporarily increases. Due to the course of the primary pressure p 19 , it can be seen that the dynamic primary pressure p 19 does not represent a satisfactory representation of the loading state of the car.
- the secondary pressure p 20 follows the course of the primary pressure p 19 , the course is much more subdued.
- the secondary pressure p 20 represents a value that maps the actual load state substantially better than the primary pressure p 19 .
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016217790.7A DE102016217790A1 (de) | 2016-09-16 | 2016-09-16 | Bremsvorrichtung für eine Aufzugsanlage |
PCT/EP2017/072681 WO2018050577A1 (de) | 2016-09-16 | 2017-09-11 | Bremsvorrichtung für eine aufzugsanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3512794A1 true EP3512794A1 (de) | 2019-07-24 |
Family
ID=59901503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17768731.6A Withdrawn EP3512794A1 (de) | 2016-09-16 | 2017-09-11 | Bremsvorrichtung für eine aufzugsanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US11117782B2 (de) |
EP (1) | EP3512794A1 (de) |
CN (1) | CN109789994B (de) |
DE (1) | DE102016217790A1 (de) |
WO (1) | WO2018050577A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019133376A1 (de) | 2019-12-06 | 2021-06-10 | Chr. Mayr Gmbh + Co Kg | Bremse, Schaltungsanordnung und Verfahren zum Ansteuern einer Bremse |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4793442A (en) * | 1987-11-05 | 1988-12-27 | Schindler Elevator Corporation | Method and apparatus for providing pre-travel balancing energy to an elevator drive |
CN2048062U (zh) | 1989-06-19 | 1989-11-22 | 高建新 | 升降机绳式保险器 |
JPH0459579A (ja) | 1990-06-26 | 1992-02-26 | Mitsubishi Electric Corp | ロープレスエレベータの制動装置 |
JPH07100588B2 (ja) * | 1990-09-10 | 1995-11-01 | 株式会社日立製作所 | エレベーター装置 |
JPH04292391A (ja) * | 1991-03-20 | 1992-10-16 | Hitachi Ltd | エレベータ |
US6425462B1 (en) | 2000-11-03 | 2002-07-30 | Su The Tran | Gravity-assisted elevator brake/clutch |
DE202004017587U1 (de) | 2004-11-12 | 2005-01-20 | Hydraulik-Liftsysteme Walter Mayer Gmbh | Geführte Hebeeinrichtung mit gedämpfter Fangvorrichtung |
EP1840068A1 (de) | 2006-03-29 | 2007-10-03 | Inventio Ag | Aufzugsanlage mit einer Aufzugskabinenbremseinrichtung und Verfahren zum Bremsen einer Aufzugskabine |
JP2012158440A (ja) * | 2011-02-01 | 2012-08-23 | Toshiba Elevator Co Ltd | エレベータ |
CN102275795B (zh) | 2011-06-10 | 2013-10-30 | 中国矿业大学 | 一种恒减速制动转换装置 |
ES2584176T3 (es) * | 2011-07-29 | 2016-09-26 | Otis Elevator Company | Freno de seguridad ajustable |
DE102014206461A1 (de) | 2014-04-03 | 2015-10-08 | Thyssen Krupp Elevator Ag | Aufzug mit einer Bremsvorrichtung |
DE102014116281A1 (de) | 2014-11-07 | 2016-05-12 | Thyssenkrupp Ag | Aufzug mit einer Bremsvorrichtung |
-
2016
- 2016-09-16 DE DE102016217790.7A patent/DE102016217790A1/de not_active Ceased
-
2017
- 2017-09-11 WO PCT/EP2017/072681 patent/WO2018050577A1/de unknown
- 2017-09-11 EP EP17768731.6A patent/EP3512794A1/de not_active Withdrawn
- 2017-09-11 CN CN201780056955.0A patent/CN109789994B/zh not_active Expired - Fee Related
- 2017-09-11 US US16/333,683 patent/US11117782B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN109789994A (zh) | 2019-05-21 |
US11117782B2 (en) | 2021-09-14 |
CN109789994B (zh) | 2020-11-27 |
US20190256321A1 (en) | 2019-08-22 |
WO2018050577A1 (de) | 2018-03-22 |
DE102016217790A1 (de) | 2018-03-22 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20190416 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSENKRUPP ELEVATOR INNOVATION AND OPERATIONS AG |
|
17Q | First examination report despatched |
Effective date: 20200512 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20200923 |