EP2393746A1 - Apparatus for performing a load test in an elevator installation and method for performing such a test - Google Patents
Apparatus for performing a load test in an elevator installation and method for performing such a testInfo
- Publication number
- EP2393746A1 EP2393746A1 EP10702316A EP10702316A EP2393746A1 EP 2393746 A1 EP2393746 A1 EP 2393746A1 EP 10702316 A EP10702316 A EP 10702316A EP 10702316 A EP10702316 A EP 10702316A EP 2393746 A1 EP2393746 A1 EP 2393746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- elevator
- test
- counterweight
- elevator car
- 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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
Definitions
- the invention relates to a device for carrying out a load test in an elevator installation according to the preamble of claim 1, and to a method for carrying out a load test in an elevator installation according to the preamble of claim 6.
- load tests are carried out after the installation of an elevator installation and also periodically to check the operational safety.
- the elevator car In a load test, the elevator car must be loaded with 100% of the payload. So far, the load tests are carried out accordingly with a test load in the elevator car. This means that the elevator car must be loaded with a corresponding test load before each test. The workload is therefore relatively large.
- the object of the invention is therefore to propose a device for carrying out a load test in an elevator installation according to the type mentioned above, with which the disadvantages of the prior art are avoided.
- the object of the invention is also to propose such a device, which reduces the effort that has been necessary in carrying out a stress test in an elevator system.
- the present invention if necessary, enables accurate and reproducible performance of such tests and tests.
- the present invention is useful not only for performing stress tests at start-up or placing on the market, but also for periodic stress tests or stress tests performed after maintenance. Such stress tests can be carried out to test safety-related functions of an elevator installation under load conditions.
- Fig. Fig. 1 shows a first elevator system from the side
- Fig. Fig. 2 shows a second elevator system from the side
- Fig. 3 details of a further elevator system in a perspective view
- FFiigg .. 44 Details of an inventive device in a perspective view
- the elevator installation 10 comprises an elevator car 11 and a Counterweight 12, which are connected to each other by means of at least one support means 13. Typically, at least two support means 13 are used. Furthermore, the elevator installation 10 includes a drive brake 18 in order to be able to stop the elevator car 11 when traveling downhill.
- This is an elevator system 10 with a so-called 2: 1 suspension. This creates a simple pulley that can lift twice the payload at half the speed.
- the drive unit 16 comprises an electric motor, a traction sheave 17 fixed on the shaft of the electric motor and a drive brake 18. Details of the drive unit 16 are not shown in FIG.
- the drive brake 18 is indicated only schematically.
- G cwt is the weight of the counterweight 12
- G ak is the curb weight of the elevator car 11
- G NL is the
- This equation (1) states that at a 50% balance, a balance is established between the elevator car 11 and the counterweight 12 when the elevator car is loaded with 50% of the payload.
- the counterweight 12 may be a little less heavy than a 50% balance, which is energetically beneficial, especially for empty runs and trips with small cabin load.
- both the elevator car 11 and the counterweight 12 would rest in the elevator shaft if the drive 16 is not engaged.
- the drive brakes 18 need not apply any braking forces in this special case in order to maintain this balance.
- a stress test can be carried out by applying a corresponding tensile force F to the counterweight 12.
- This approach according to the invention for carrying out stress tests can be used for various test purposes in order, for example, to check safety-relevant elements of the elevator installation 10.
- the test of the drive brakes 18 will be described in more detail as a particularly preferred example of a load test.
- FIG. 3 shows the example of a drive unit 16 carried by guide rails, which here drives two flat belts 19 as carrying and propelling means. It is a gearless drive unit 16 with a arranged in a housing 20 traction sheave 17 (not visible here), an electric motor 21 and a drive brake 18.
- the housing 20 is supported in this embodiment by means of two machine feet 22 (visible is the front machine foot 22nd ) on a bracket 23 of a support frame 24 from.
- the electric motor 21 is also supported on the support frame 24 here.
- a controller 24 controls the electric motor 21 and the drive brake 18 and supplies electric motor 21 and drive brake 18 with electrical energy.
- a drive brake 18 typically has two, three or more brake circuits. Each of the brake circuits is actuated via a brake caliper or a brake arm one of the brakes of the drive brake 18.
- a brake caliper or a brake arm one of the brakes of the drive brake 18.
- the invention can be applied to drive brakes 18 which have more than just two brake circuits and brakes.
- a switch or pushbutton for example, a first brake half of a drive brake 18 can be opened while the other brake half of the drive brake 18 remains closed.
- one of the two brake circuits is released by the operation of the switch or button.
- the other brake circuit remains unaffected. This means that the released brake half is open and does not exert any braking forces.
- the other half of the brake is active and exerts braking forces.
- Brake half is active. By removing the locking pin and inserting the locking pin at another position, then the second brake half can then be mechanically blocked while the first brake half is active.
- this approach requires manual access to the drive brake 18, which is typically located in the elevator shaft.
- a device 100 for carrying out a load test is used in the elevator installation 10, as illustrated schematically in FIG. 1.
- the device 100 includes a connector 102 for temporary attachment to the counterweight 12, an element with spring properties 103, and a chuck 101.
- the connector 102 for example, cables, straps, straps, rods, etc., or even an eyelet with hooks and similar fasteners may be used .
- the connector 102 may also be a component of the spring property element 103. In this special case, there is no need for a separate connecting element 102.
- a tension spring can be used as an element with spring properties 103, as shown in the figures.
- the elements 101, 102 and 103 are designed for installation in the elevator installation 10.
- a point of the gripping tool 101 is fixed at a stationary point Pl of the elevator installation 10 via the element with spring properties 103.
- Another point of the gripping device 101 is connected to the counterweight 12 via the connecting element 102.
- the gripping device 101 comprises actuating means 104, which allow the element with spring properties 103 to be tensioned, in order thus to exert a downward tension F on the counterweight 12.
- the device 100 is now stretched so that it applies a force F, which was determined according to the equations given above.
- the force F is adjusted so that load conditions arise, which would also occur in a load test with fully loaded elevator car 11.
- the elevator car 11 with only one active brake circuit must maintain the current position (e.g., topmost position Ptop) in the elevator shaft, although the device 100 provides a large additional upward pulling force F on the elevator shaft
- Elevator car 11 is exercised. This process can then be repeated by operating the switches or buttons, or by reacting the locking pin, for the second brake circuit. In this way, by specifying the tensile force F for an elevator system necessary for a stress test
- the device 100 is not constrained between an underside of the counterweight 12 and a point Pl on the shaft bottom 15 must be arranged.
- the device 100 can also be arranged between the counterweight 12 and a shaft wall or between the counterweight and a guide rail of the elevator installation 10. It is important that the arrangement of the device 100 takes place in such a way that on the one hand it finds a stable attachment point (eg the point P1 in FIG. 1) in order to derive the forces that occur and on the other hand either manually or via a corresponding (electromagnetic) Control unit can be actuated.
- FIG. 4 shows details of an embodiment of the device 100, which makes it possible to produce an operative connection between the grip 101 and a stable attachment point (as a stationary point in the elevator installation 10) on a guide rail 30.
- the element with spring properties 103 is here temporarily fastened by means of a projection element 104 on a suitable height position on the guide rail 30.
- the neck member 104 has a U-shape in plan view.
- On the back sits a pin or bolt 105 which connects two lateral legs 104.1, 104.2 of the neck element 104 on the back.
- a connecting plate 106 is inserted through two slots in the lateral legs 104.1, 104.2, as shown in Fig. 4.
- This connection plate 106 can be fixed by two pins 107, or by means acting in the same way.
- the connection plate 106 can be fixed by two pins 107, or by means acting in the same way.
- Element with spring characteristics 103 is suspended in the connection plate 106 or is connected to this connection plate 106.
- a horizontal tensile force is exerted on the element with spring properties 103.
- Fig. 5 details of another embodiment of the device 100 are shown, which allows an operative connection between the gripping 101 and a stable starting point (as a stationary point in the elevator installation 10) at one Guide rail 30 produce.
- the element with spring properties 103 is here temporarily fastened by means of a projection element 104 on a suitable height position on the guide rail 30.
- the neck member 104 has a U-shape in plan view.
- On the rearwardly facing side of the lug element 104 a rectangular opening is provided.
- the attachment element 104 is attached to the guide rail 30 with this opening.
- elements with spring property, tension springs, bayonet elements 108 or similar elements are arranged on two legs of the lug element 104 screw elements. These elements 108 may engage behind the guide rail 30 by manual operation to secure the lug element 104.
- a horizontal tensile force is exerted on the element with spring properties 103 in the illustrated embodiment.
- a force-measuring element is used as part of the device 100 in order to be able to read how large the instantaneous tensile stress F is.
- a force measuring element for example, a load cell, a spring balance or other measuring device may be used, each having a display or a pointer with scale.
- this includes
- Grip 101 a pulley, which is provided with actuating means for manual operation.
- actuating means for manual operation.
- the necessary tensile force F can be predetermined by the action of the pulley.
- the device 100 is provided as a test kit designed for temporary installation in the elevator installation 10.
- the invention thus acts on the elevator installation 10 and its
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10702316.0A EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09152385 | 2009-02-09 | ||
PCT/EP2010/051337 WO2010089337A1 (en) | 2009-02-09 | 2010-02-04 | Apparatus for performing a load test in an elevator installation and method for performing such a test |
EP10702316.0A EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2393746A1 true EP2393746A1 (en) | 2011-12-14 |
EP2393746B1 EP2393746B1 (en) | 2013-09-04 |
Family
ID=40789090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10702316.0A Not-in-force EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Country Status (6)
Country | Link |
---|---|
US (1) | US9051154B2 (en) |
EP (1) | EP2393746B1 (en) |
CN (1) | CN102307803B (en) |
BR (1) | BRPI1008650B1 (en) |
ES (1) | ES2435469T3 (en) |
WO (1) | WO2010089337A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2966140B1 (en) * | 2010-10-19 | 2013-11-15 | France Elevateurs | CABIN FOR TRANSPORTING PEOPLE AND / OR LOADS WITH CHARGE SIMULATION DEVICE |
CN105314486B (en) * | 2014-08-04 | 2017-11-24 | 上海三菱电梯有限公司 | The assay method of elevator brake brake force |
US11136220B2 (en) * | 2017-02-17 | 2021-10-05 | Mitsubishi Electric Corporation | Elevator device |
CN107445003B (en) * | 2017-08-01 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | Elevator load test combinations replace loading system and test method |
CN107986128B (en) * | 2017-12-06 | 2019-08-27 | 常熟理工学院 | A kind of elevator detection device |
EP3705441A1 (en) * | 2019-03-05 | 2020-09-09 | KONE Corporation | A method for controlling an elevator |
CN113247729A (en) * | 2021-05-19 | 2021-08-13 | 李宏 | Elevator safety performance parameter measuring device, measuring method and application |
WO2023117832A1 (en) | 2021-12-20 | 2023-06-29 | Inventio Ag | Device for measuring a force acting on an elevator system, method for measuring a force acting on a movable component of an elevator system, and an elevator system for carrying out the method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6848544B2 (en) * | 2001-01-26 | 2005-02-01 | Inventio Ag | Method and equipment for the evacuation of lift passengers |
KR100506478B1 (en) * | 2001-06-28 | 2005-08-03 | 미쓰비시덴키 가부시키가이샤 | Load detector of elevator |
CN1526631A (en) * | 2003-03-06 | 2004-09-08 | 永大机电工业股份有限公司 | Elevator load detector |
FI118684B (en) * | 2004-01-09 | 2008-02-15 | Kone Corp | Method and system for testing the condition of elevator brakes |
WO2007094777A2 (en) | 2006-02-14 | 2007-08-23 | Otis Elevator Company | Elevator brake condition testing |
DE102007015648A1 (en) | 2006-12-11 | 2008-06-12 | TÜV Nord Systems GmbH & Co. KG | Method and device for testing elevator installations |
CN101298307B (en) * | 2007-05-03 | 2010-06-23 | 因温特奥股份公司 | Elevator equipment, a slewing roller for elevator equipment and a method for installing a load sensor |
-
2010
- 2010-02-04 BR BRPI1008650-1A patent/BRPI1008650B1/en not_active IP Right Cessation
- 2010-02-04 WO PCT/EP2010/051337 patent/WO2010089337A1/en active Application Filing
- 2010-02-04 EP EP10702316.0A patent/EP2393746B1/en not_active Not-in-force
- 2010-02-04 ES ES10702316T patent/ES2435469T3/en active Active
- 2010-02-04 US US13/145,693 patent/US9051154B2/en not_active Expired - Fee Related
- 2010-02-04 CN CN201080006898.3A patent/CN102307803B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2010089337A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2435469T3 (en) | 2013-12-19 |
US20110283814A1 (en) | 2011-11-24 |
BRPI1008650A2 (en) | 2016-03-08 |
EP2393746B1 (en) | 2013-09-04 |
CN102307803B (en) | 2016-01-20 |
CN102307803A (en) | 2012-01-04 |
BRPI1008650B1 (en) | 2019-10-29 |
WO2010089337A1 (en) | 2010-08-12 |
US9051154B2 (en) | 2015-06-09 |
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