EP3495302A1 - Aufzugvorrichtung und -verfahren - Google Patents
Aufzugvorrichtung und -verfahren Download PDFInfo
- Publication number
- EP3495302A1 EP3495302A1 EP17206184.8A EP17206184A EP3495302A1 EP 3495302 A1 EP3495302 A1 EP 3495302A1 EP 17206184 A EP17206184 A EP 17206184A EP 3495302 A1 EP3495302 A1 EP 3495302A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- elevator
- elevator car
- brakes
- drive unit
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 230000001960 triggered effect Effects 0.000 claims abstract description 15
- 230000003247 decreasing effect Effects 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000007423 decrease Effects 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- 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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Definitions
- This invention relates to an elevator apparatus and more particular to a solution for ensuring that brakes of the elevator apparatus remain in a working condition.
- an elevator apparatus with a first and second brake arranged to brake an elevator car.
- the brakes are dimensioned to stop and hold an elevator car with a predetermined load (such as 25% overload) at standstill in the elevator shaft.
- a predetermined load such as 25% overload
- Testing brakes needs to be carried out in a way which does not disturb persons utilizing the elevator car for normal operation runs between different floors of a building.
- a common approach is that service personnel utilizes the elevator car for separate test runs carried out without having persons onboard the elevator car during the test.
- a drawback with such a solution is, however, that separate test runs need to be regularly carried out which causes costs due to a need to have maintenance personnel involved, and which also reduces the time that the elevator car is available for normal operation elevator car runs. Additionally, such brake tests with an empty elevator car have the drawback that different load conditions are not tested.
- An object of the present invention is to solve the above mentioned drawback and to provide a solution which simplifies testing of brakes in an elevator apparatus. This object is achieved with an elevator apparatus according to independent claim 1 and with a method according to independent claim 8.
- Figure 1 illustrates an elevator apparatus 1 with a hoisting machine 2 including a sheave 9 and a drive unit 3, such as an electric motor, arranged to drive an elevator car 4 in an elevator shaft 5.
- Figure 1 has by way of example been simplified to show that the drive unit 3 is directly with a shaft 6 connected to a sheave 9 (or sheaves) of the hoisting machine 2 around which the rope 7 (or ropes) runs which is used for moving the elevator car 4 and the counter weight 8 in the elevator shaft.
- a sheave 9 or sheaves
- the elevator apparatus 1 is also provided with a control arrangement 10 which controls the operation of the hoisting machine 2.
- the control arrangement may be implemented with circuits or a combination of circuits and a computer program, for instance.
- the control arrangement 10 additionally controls a first brake 11 and a second brake 12, which by way of example are arranged to brake the shaft 6 in order to stop and hold the elevator car 4 at standstill in the elevator shaft 5. It is, however, possible to utilize other types of brakes than the illustrated hoisting machine brakes, in which case the brakes may be located in another part of the elevator apparatus than illustrated in Figure 1 .
- the elevator apparatus 1 is provided with electromechanical hoisting machinery brakes 11 and 12 as safety devices to apply braking force to the traction sheave 9 via the rotating shaft 6 of the hoisting machine to brake movement of the hoisting machine and therefore the elevator car 4.
- the brakes 11 and 12 have to be dimensioned to stop and hold an elevator car with 125% load (25% overload) at standstill in the elevator shaft 5.
- the brakes 11 and 12 are also used in rescue situations and also in emergency braking situations to stop the elevator car 4 if an operational fault occurs, like in an overspeed situation of the elevator car. Further, they are used to protect elevator passengers from unintended car movement at the landing and to provide a safe operating environment for a servicemen who needs to enter to the inside the elevator shaft 5. Therefore it is necessary to ensure that the brakes are operating correctly.
- control arrangement 10 is configured to test operation of the at least one of the first 11 and second 12 brakes during a normal operation run of the elevator car 4.
- a "normal" operation run refers to a situation where the elevator car is available for ordinary passengers having a need to travel from one floor 13 of a building to another floor 14. Consequently, the tests may be carried out with passengers onboard while the elevator apparatus is in the normal operation mode and it is not necessary to set the elevator apparatus into a test mode, which is the case while maintenance personnel is at the installation site and carry out work with the elevator apparatus and have a need to temporarily take control of the elevator apparatus via a specific operator panel 15 in order to drive the elevator car in a test mode, for instance.
- the control arrangement 10 triggers only one of the at least first 11 and second brake 12 to brake when the elevator car 4 due to adjustment of the force F from the drive unit 3 has slowed down and arrived to a door 16 at a floor 14 in the elevator shaft 5.
- the elevator car 4 starts to open the door of the elevator car and the landing door 16 to release passengers from the elevator car.
- the brakes are preferably continuously tested in turns during different elevator runs with predetermined intervals such that the condition of each brake is regularly checked.
- the control arrangement 10 decreases the force F provided from the drive unit 3 to the elevator car 4. This decrease in the force F may be achieved by reducing the torque T of the drive unit 3.
- the control arrangement starts to monitor movement of the elevator car 4. This monitoring may be implemented by monitoring the (rotation) speed of the drive unit 3 (such as electric motor), for instance.
- the control arrangement 10 detects that the elevator car 4 moves, it triggers indication of a failed brake.
- the control arrangement 10 triggers braking with also the second brake 12 and also increases the force F provided from the drive unit 3 to the elevator car 4 in order to stop movement of the elevator car as soon as possible.
- the control arrangement 10 stores in a memory information about the failed brake test.
- the control arrangement may also send information about the failed brake to a remote service center (where the memory may be located) via a remote connection.
- the control arrangement may prevent further normal operation runs with the elevator car 4 in question until a predetermined control command is received.
- a maintenance person who has arrived to the location and has carried out appropriate service to the failed brake may pass the predetermined control command to the control arrangement 10 via the operator panel 15, for instance.
- the predetermined number of failed tests needed to prevent further operation of the elevator car may vary case by case.
- One alternative is that if indication of a failure for the same brake is triggered in three consecutive tests, then further operation of the elevator car is prevented.
- information about prevention of further operation of the elevator is stored in a non-volatile memory, and further operation of the elevator is prevented based on the information stored in the non-volatile memory.
- control arrangement 10 determines that the tested first brake is in good working condition.
- the test result is preferably stored in a memory. Additionally, the test may be ended such that braking continues with both brakes, until it eventually is time for a new test of one of the brakes.
- Figure 2 illustrates a method for testing the elevator apparatus of Figure 1 , for instance.
- Line 17 in Figure 2 illustrates the measured motor speed of the drive unit 3 (such as electric motor) and Line 18 illustrates the torque provided by the drive unit 3 at different moments (T0 - T4) of time.
- the force F provided from the drive unit 3 to the elevator car 4 is dependent on the torque.
- Figure 2 illustrates the status of the first brake 11 with line 19 and the status of the second brake 12 with line 20.
- control arrangement 10 decreases the force F provided from the drive unit 3 to the elevator car 4. This is seen in Figure 2 as a rampdown of the drive unit 3 torque (line 18) starting from moment T2. At this stage monitoring of movements of the elevator car is initiated.
- the control arrangement triggers at moment T3 braking also with the second brake 12. Additionally, the drive unit torque (line 18) is increased such that the force F provided from the drive unit 3 to the elevator car is increased. In this way the elevator car remains still. After the delay D2 the second brake 12 is engaged and a rampdown of the drive unit 3 torque (line 18) is again started from moment T4.
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES17206184T ES2779768T3 (es) | 2017-12-08 | 2017-12-08 | Aparato y método de ascensor |
EP17206184.8A EP3495302B1 (de) | 2017-12-08 | 2017-12-08 | Aufzugvorrichtung und -verfahren |
CN201811485883.4A CN109896381B (zh) | 2017-12-08 | 2018-12-06 | 电梯设备和方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17206184.8A EP3495302B1 (de) | 2017-12-08 | 2017-12-08 | Aufzugvorrichtung und -verfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3495302A1 true EP3495302A1 (de) | 2019-06-12 |
EP3495302B1 EP3495302B1 (de) | 2020-02-19 |
Family
ID=60629580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17206184.8A Active EP3495302B1 (de) | 2017-12-08 | 2017-12-08 | Aufzugvorrichtung und -verfahren |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3495302B1 (de) |
CN (1) | CN109896381B (de) |
ES (1) | ES2779768T3 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3560874B1 (de) * | 2018-04-26 | 2021-12-01 | KONE Corporation | Verfahren und vorrcihtung für die zustandsüberwachung einer induktiven bremsvorrichtung einer aufzugskabine |
CN111170111B (zh) * | 2020-02-28 | 2021-03-16 | 深圳市通用互联科技有限责任公司 | 电梯故障检测方法、装置、计算机设备和存储介质 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007020325A2 (en) * | 2005-08-19 | 2007-02-22 | Kone Corporation | Elevator system |
EP3138801A1 (de) * | 2015-09-07 | 2017-03-08 | Kone Corporation | Aufzugsbremsauslöseüberwachung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101367480B (zh) * | 2002-10-15 | 2012-10-10 | 奥蒂斯电梯公司 | 在提升机***中检测有效制动器操作的方法 |
US7268514B2 (en) * | 2004-11-30 | 2007-09-11 | Rockwell Automation Technologies, Inc. | Motor control for stopping a load and detecting mechanical brake slippage |
SG138531A1 (en) * | 2006-06-19 | 2008-01-28 | Inventio Ag | Method of checking lift braking equipment, a method for placing a lift installation in operation and equipment for carrying out placing in operation |
FI118641B (fi) * | 2006-06-21 | 2008-01-31 | Kone Corp | Menetelmä ja järjestelmä hississä hissikorin hallitsemattoman liikkeen tunnistamiseksi ja pysäyttämiseksi |
CN104192659A (zh) * | 2014-08-22 | 2014-12-10 | 苏州通润驱动设备股份有限公司 | 一种电梯制动力的检测方法 |
CN104609273A (zh) * | 2015-02-03 | 2015-05-13 | 西继迅达(许昌)电梯有限公司 | 一种电梯驱动主机的制动设备可靠性判定的***及方法 |
-
2017
- 2017-12-08 ES ES17206184T patent/ES2779768T3/es active Active
- 2017-12-08 EP EP17206184.8A patent/EP3495302B1/de active Active
-
2018
- 2018-12-06 CN CN201811485883.4A patent/CN109896381B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007020325A2 (en) * | 2005-08-19 | 2007-02-22 | Kone Corporation | Elevator system |
EP3138801A1 (de) * | 2015-09-07 | 2017-03-08 | Kone Corporation | Aufzugsbremsauslöseüberwachung |
Also Published As
Publication number | Publication date |
---|---|
CN109896381A (zh) | 2019-06-18 |
ES2779768T3 (es) | 2020-08-19 |
EP3495302B1 (de) | 2020-02-19 |
CN109896381B (zh) | 2022-05-03 |
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