EP4452809A1 - Vorrichtung zum messen einer kraft an einer aufzuganlage, verfahren zur überprüfung einer balancierung einer aufzugsanlage, sowie eine aufzuganlage zum ausführen des verfahrens - Google Patents
Vorrichtung zum messen einer kraft an einer aufzuganlage, verfahren zur überprüfung einer balancierung einer aufzugsanlage, sowie eine aufzuganlage zum ausführen des verfahrensInfo
- Publication number
- EP4452809A1 EP4452809A1 EP22839784.0A EP22839784A EP4452809A1 EP 4452809 A1 EP4452809 A1 EP 4452809A1 EP 22839784 A EP22839784 A EP 22839784A EP 4452809 A1 EP4452809 A1 EP 4452809A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counterweight
- elevator
- force
- cabin
- 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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- 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
- B66B19/00—Mining-hoist operation
- B66B19/007—Mining-hoist operation method for modernisation of elevators
Definitions
- the present invention relates to a device for an elevator installation, a method for checking the balance of an elevator installation, and an elevator installation.
- An elevator system has vertically movable components such as a car and at least one counterweight.
- the movable components are connected to one another via at least one suspension element.
- the suspension element runs over at least one traction sheave of a drive device of the elevator installation.
- the suspension element On one side of the traction sheave, the suspension element carries a constant weight of the counterweight.
- the suspension element carries the variable weight of the cabin and a load to be transported in it.
- the drive device applies a torque to compensate for a difference between the weight forces.
- the torque is transmitted to the suspension element by friction or traction between the suspension element and the traction sheave.
- WO2008071301A1 describes a method and a device for testing elevator systems.
- WO2013068648A1 describes a method and a device for measuring the balance of an elevator and a method for balancing the elevator.
- WO2021084012A1 discloses a car brake of an elevator installation.
- DE4311011 A1 describes a method and a device for testing an elevator.
- a weight of the counterweight and/or car and thus a balancing of the elevator system can be inferred.
- At least one easily transportable device with a blocking device and a measuring device that is presented here is all that is required to measure the force.
- a device for an elevator installation having a blocking device and a measuring device has, wherein the blocking device is designed to connect (fasten) a movable component of the elevator installation to a rail system of the elevator installation and/or to support it on the rail system, wherein the measuring device is designed to measure a force derived from the movable component into the rail system in map to a force value.
- a method for checking the balance of an elevator installation having at least one elevator control, one guide rail and at least one counterweight and one car, the at least one counterweight being connected to the car via at least one suspension element comprising the steps:
- an elevator system is presented with at least one, preferably two, counterweight(s), a car and an elevator control, the elevator control being able to be connected to a device according to a first aspect of the invention and to carry out a method according to a second Aspect of the invention is formed.
- a blocking device can essentially completely prevent a movement of the at least one counterweight and/or the cabin along the guide rail at least in one direction.
- the direction can be a vertical direction.
- the blocking device can represent an insurmountable obstacle for the moving component (at least one counterweight and/or the cabin) in this direction.
- the blocking device can divert compressive forces and/or tensile forces exerted by the movable component into the rail system.
- the blocking device can have at least one hook for hanging in a corresponding corresponding recess of the rail system.
- the hook can be inserted into the recess and moved along the recess until an abutment surface of the hook abuts an edge of the recess.
- the force can be diverted into the rail system via the hook.
- the hook can enable tool-free assembly and disassembly of the device.
- the rail system can have several matching recesses. The device can thus be hung in different positions of the rail system.
- the blocking device can have a plurality of hooks of the same type. Redundancy can be achieved by several hooks and the operational reliability of the device can be increased. A greater force can also be diverted into the rail system via several hooks.
- the at least one hook can be designed symmetrically.
- the hook can be hung in the recess in opposite orientations.
- the symmetrical hook can derive tensile forces of the suspension element upwards and the weight of the movable component downwards into the rail system.
- the hook can slide in the recess until the opposite side of the hook abuts the opposite side of the recess. In this way, the device can be supported on the rail system at the top and bottom.
- the blocking device can have a cabin side and a counterweight side for connection to the rail system.
- the measuring device can be used on a car of the elevator system if the car side is connected to the rail system.
- the measuring device can be used on a counterweight of the elevator system if the counterweight side is connected to the rail system.
- a car guide of the rail system can differ from a counterweight guide of the rail system.
- the cabin side can be adapted to the cabin layout.
- the counterweight side can be adapted to the counterweight guide.
- the car side and the counterweight side can be connected to the rail system on different sides of the rail system.
- the device can be connected to the counterweight and/or the cabin by a screw device.
- the device comprises a screw device with which in the assembled state, a tensile force transmitted to the at least one counterweight and/or the cabin via suspension means can be changed.
- the screwing device has a thread, preferably a threaded rod, via which the counterweight and/or the cabin can be moved by a defined distance in order to change the tensile force.
- the counterweight and/or the cabin can preferably be raised via the screw device in order to reduce the tensile force.
- the counterweight and/or the cabin can preferably be pressed down or pulled down by the screw device in order to increase the pulling force.
- the measuring device can be designed in such a way that the force value can be transmitted to a controller of the elevator system in the form of a signal. In this way, the device can be connected to the elevator control system. This enables at least partial automation of the methods in which the measuring device of the device is used.
- This property can be embodied, for example, by a cable connection and/or by a wireless connection.
- the device can be designed in such a way that it also has a display for showing the force values measured by the measuring device.
- the force value set and correspondingly displayed in a static state can be read and used, for example, by entering it into the elevator control.
- An elevator system can be a passenger transport system.
- the elevator system can have at least one counterweight per car.
- the elevator system can have two counterweights per car.
- At least one suspension element is arranged between the cabin and the counterweights.
- the suspension means can be a rope or a belt, for example.
- the suspension element can be guided over at least one traction sheave of a drive device of the elevator installation.
- the traction sheave can be arranged at an upper end of a rail system of the elevator installation.
- the counterweights can be moved in opposite directions to the cabin.
- the rail system can have at least one guide per cabin and at least one guide tion per counterweight.
- the rail system can have two parallel, vertical guide rails, between which the cabin is mounted so that it can move vertically.
- Each guide rail can have a guide for one of the counterweights on an outside.
- the device can be temporarily connected to the rail system.
- the device can also be connected to another static element, such as a rail bracket or a shaft wall.
- the device can be mechanically connected to the rail system.
- the device can be screwed to the guide rail or clamped onto the guide rail.
- the guide rail can have at least one predefined attachment point for the device, at which the device can be positively connected to the guide rail.
- the device can be connected to the car in the immediate vicinity of a car brake of the elevator system. In this way, the force measured by the measuring device can more accurately correspond to the actual force at the load sensor that is integrated into the car brake.
- the device can be placed above or below the moving component.
- a measuring device can be a load cell or a weighing beam, for example.
- the measuring device can be arranged between an interface of the device to the rail system and an interface of the device to the movable component.
- An acting force can deform the measuring device slightly elastically.
- the deformation can be mapped into an electrical signal.
- the signal can represent the force.
- the measuring device can be calibrated. For example, the measuring device can be set to zero before fixing the movable component.
- the pulling force can be increased or decreased.
- the pulling force can be changed using a screw device of the device.
- the screw device can have a thread, via which the movable component can be moved by a defined distance in order to change the tensile force.
- the component can be lifted using the screwing device to reduce traction.
- the component can be pushed down or pulled down by the screwing device in order to increase the tensile force.
- the traction force can be changed via a torque of the drive device provided via the traction sheave.
- the torque can be changed via a motor control of the drive device.
- the torque can also be changed by a brake on the traction sheave.
- An amount of the change can be specified for the engine control unit and/or an actual change in the torque can be measured and output by the engine control unit.
- the component can be mechanically connected to the device connected to the rail system.
- the device can be connected to the rail system underneath the movable component and can be connected to the movable component from below.
- the mechanical connection allows the tensile force of the suspension element to be increased without the component lifting off the device.
- the device can also be connected to the rail system above the movable component and mechanically connected to the movable component from above. The movable component can then hang on the device and the load on the carrying means can be relieved. The component can also be pushed down by the device.
- the mechanical fixation also allows work to be carried out safely on the elevator.
- the weight of the at least one counterweight and/or the cabin can be checked in a first step.
- a service technician can count the number of counterweight elements (e.g. concrete elements).
- the service technician can ensure that both counterweights have the same weight. To do this, he can, for example, count the number of counterweight elements of the first counterweight and the counterweight elements of the second counterweight and compare the number of counterweight elements. If the number of counterweight elements is the same, it can be assumed that the counterweights are of the same weight, i.e. the system is balanced.
- the test carried out can be confirmed.
- the confirmation via an input in a mobile device connected to the elevator controller.
- the service technician can, for example, enter the weight of the counterweight (number of counterweight elements) by making a corresponding entry in a mobile device connected to the elevator control, or confirm a target value displayed by the mobile device.
- the service technician can, for example, confirm the balance of the counterweights by making a corresponding entry in a mobile device connected to the elevator control system.
- the elevator control thus knows the actual counterweight or the balancing of the elevator system.
- a brake of the elevator system can be activated. Then the drive device can be switched without torque. The brake can then be opened to change the traction. After setting a static state, the force value can be recorded. The force value can be compared to a reference value.
- the unloaded or empty car may be lighter than the counterweight or counterweights.
- a ratio between a mass of the car and a mass of the counterweights can be referred to as the balance of the elevator system.
- the balance can be 4/6, for example, in which case the mass of the cabin is approximately 66% of the mass of the counterweight.
- the counterweight or both counterweights can be placed on the service device to check the balance.
- the drive device compensates for the difference in weight between the counterweight and the car by applying a torque to the traction sheave.
- the brake is arranged on the car and blocks movements of the elevator system, so that after the drive device has switched to zero torque, the entire suspension element is loaded by the weight of the counterweight.
- the force sensor can now be zeroed and the brake released.
- the brake is released, only the weight of the car is held by the support means, since the weight difference between the counterweight and the car is held by the service device and is reflected in the force value.
- each of the counterweights can be connected to the device/two devices and measured using the method described.
- the two counterweights are of equal weight (e.g. by counting the counterweight elements in each of the two counterweights) it may be sufficient to carry out the steps described for one of the two counterweights. Then, with the knowledge of the identical weight, the total weight of the counterweights can be deduced. The balance of the elevator system can be checked by comparing the determined total weight of the counterweights with a reference value.
- the reference value can be determined depending on a balancing factor of the elevator installation and a desired car weight.
- a reference range which corresponds to a tolerance range around the reference value, can be determined.
- the reference value can, for example, be calculated from a car weight and a balancing factor (both dependent on the type of elevator installation).
- the device should therefore measure a force value on a counterweight, which corresponds to a weight of (915/2) 457.5kg.
- a tolerance range around the reference value can be determined, in which the elevator system is considered to be balanced. For example, a tolerance range of +/-10% can be selected. In this case, the elevator system is judged to be balanced if the force value that is measured corresponds to a weight of (+/-10% of 457.5) 411.75 to 503.25kg.
- the device can be connected to the elevator control in terms of communication technology.
- At least one, preferably all, of the procedural steps from the list setting down at least one counterweight and/or the cabin, changing a tractive force transmitted via the suspension means to the counterweight and/or the cabin, mapping a force value, activating the brake, deactivating the Brake, torque-free switching of the drive device and/or comparisons are carried out by the elevator control.
- a service technician can, for example, after the device has been attached to the rail system, be started by making an entry in a mobile device which is connected to the elevator system (that is to say the elevator control).
- the elevator control can then carry out the above steps one after the other.
- the device can use the measuring device to detect the placement of the counterweight and this detection of the elevator control communicate.
- the elevator control can then initiate the next steps.
- the brake can be activated by the elevator control.
- the elevator control After the elevator control detects the locking of the brake (for example by a sensor on the brake), the elevator control can switch the drive device without torque.
- the elevator control can monitor the force value on the device and wait for a static state, with a force value being resisted when the static state is reached and the elevator control evaluating this. In this way, the process can be automated and carried out with only minimal manual steps by a service technician.
- a load sensor can also be designed as a load cell or load cell.
- the load sensor can be arranged at an interface between the support means and the cabin.
- the load sensor can be integrated into a braking device of the cabin.
- the cab can also have multiple load sensors.
- a load value measured by the load sensor can be compared to a known value. If the load value deviates from the known value, a correction factor can be determined and the load value corrected using the correction factor.
- FIG. 1a and 1b show representations of a service device according to an exemplary embodiment
- FIG. 2 shows a weight measurement according to an exemplary embodiment.
- the figures are merely schematic and not true to scale.
- the same reference symbols denote the same features or features that have the same effect.
- FIG. 1a shows a representation of a device 100 according to an exemplary embodiment.
- Fig. 1b shows an exploded view of the device 100.
- the device 100 has a blocking device 102 and a measuring device 104 .
- Blocking device 102 is designed to be mechanically connected to a rail system of an elevator system and to support a component of the elevator system that is movably mounted on the rail system, for example a car or a counterweight, on the rail system or to fasten it to the rail system and to absorb a force from the movable Derive component in the rail system.
- the measuring device 104 is designed to map the force derived from the movable component into the rail system via the blocking device 102 in a force value 106 .
- the blocking device 102 has at least one rail interface 108 for connecting to the rail system and at least one component interface 110 for connecting to the component.
- the measuring device 104 is arranged between the rail interface 108 and the component interface 110 .
- the device 100 has an essentially cuboid housing 112 composed of stamped and bent parts.
- the housing 112 has two side parts 114 and two covers 116 .
- the side parts 114 are bent in a U-shape and are each connected to one of the covers 116 on opposite end faces.
- the side parts 114 and the cover 116 enclose an interior of the device 100.
- the side parts 114 and the cover 116 are made of metal.
- the rail interface 108 has hooks 118 for hooking into corresponding recesses in the rail system.
- the hooks 118 are designed as stamped parts made from a plate material.
- the hooks 118 are also made of a metal.
- the hooks 118 protrude from slots 120 in the side members 114 and can be inserted into corresponding elongate recesses of the rail system. After insertion, the hooks 118 can be moved along the recess until they meet an edge of the respective Reach around the recess of the rail system and fix the device 100 at the edge.
- the component interface 110 includes a threaded rod 122 .
- the threaded rod 122 is made of a metal.
- the threaded rod 122 runs through the interior and through a hole 124 per cover 116.
- At least two nuts 126 are screwed onto the threaded rod 122.
- the threaded rod 122 is supported on at least one of the covers 116 by the nuts 126 .
- a length of the threaded rod 122 protruding from the housing 112 can be varied. Depending on the application, different lengths of the threaded rod 122 can be set.
- the measuring device 104 is arranged on the threaded rod 122 between the nuts 126 and the cover 116 .
- the length of the threaded rod 122 can also be changed after the component is placed on the device 100. Then the threaded rod 122 can be referred to as a screw device 127 .
- the component can be moved a specified distance by changing its length. As the component is moved, a tensile force or compressive force is also exerted on the component, which can be mapped into the force value 106 by the measuring device 104 .
- the threaded rod 122 can also be screwed into a thread of the component.
- the threaded rod 122 can be rotated in the threads of the component to move the component the distance and apply the force to the component.
- the blocking device 102 has two rail interfaces 108 .
- the two rail interfaces 108 are located on opposite sides of the housing 112 .
- a rail interface 108 is designed as a cabin side 128 .
- the other rail interface 108 is designed as a counterweight side 130 .
- the component interface 110 can be connected to the car of the elevator system.
- the counterweight side 130 is connected to the rail system, the component interface 110 can be connected to the counterweight of the elevator system.
- the hooks 118 on the cabin side 128 are designed as symmetrical double hooks. The double hooks can thus divert forces acting on the blocking device 102 from opposite directions into the rail system.
- the device 100 has an interface for communication-related connection of the device 100 to an elevator control.
- This interface can be implemented as a wireless connection or as a cable connection, for example.
- the device 100 has a display/display for showing the measured values measured by the measuring device 104 .
- the measured values measured are transmitted wirelessly to a display unit for display.
- the display unit can be a smartphone.
- the 2 shows a weight measurement according to an embodiment.
- the weight is measured using a service device 100 according to the approach presented here.
- the service device 100 essentially corresponds to the service device in FIG.
- the blocking device 102 of the service device 100 is mechanically connected to a rail 206 of a rail system 208 of the elevator system 204 for the weight measurement.
- the hooks 118 on the covered counterweight side of the rail interface 108 of the blocking device 102 are hooked into recesses 210 in the rail 206 .
- the blocking device 102 thus blocks a travel path of the counterweight 200 along the rail 206.
- the measuring device 104 is arranged on an upper side of the service device 100.
- the counterweight 200 is slowly placed on the threaded rod 122 of the component interface 110 by a drive device of the elevator system 102 by lifting the car.
- a proportion of a weight force 212 of the counterweight 200 is transferred to the slide via the service device 100 system 208 derived.
- the proportion can be so large that a static balance between a weight of the cabin and the rest of the weight 212 of the counterweight 200 is established.
- the portion of the weight force 212 can then be measured by the measuring device 104 .
- the counterweight 200 can also be lowered only far enough that the component interface 110 and the counterweight 200 just touch.
- a brake of the elevator system 204 can then be activated and the drive device can be switched to be torque-free. After releasing the brake, the static equilibrium is established by the counterweight 200 settling until the excess weight of the counterweight 200 is diverted via the service device 100 into the rail system 208 and is recorded by the measuring device 104 . In this way, the difference in weight between the counterweight(s) and the cabin (also called balancing) can be measured by the weight selected for the elevator system.
- the drive device can also raise the cabin further until a suspension element between the drive device and the counterweight 200 becomes slack. When slackening, a tensile force of the suspension element is reduced to approximately zero. The weight force 212 of the counterweight 200 is now introduced almost entirely into the rail 206 by the blocking device 102 . The measuring device 104 can then map the full weight force 212 in the force value 106 .
- the suspension element is tensioned by the drive device by lowering the car again and increasing the tensile force in the suspension element until the counterweight 200 lifts off the component interface 110 again.
- the service device 100 is then removed from the rail 206 . Now the measuring process can be repeated on the other counterweight of the cabin.
- the measuring device can also be removed from the device and the blocking device can be used without the measuring device as a safety device for fixing one of the moving components. For example, maintenance work on the elevator system can be carried out safely.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21215984 | 2021-12-20 | ||
| PCT/EP2022/086537 WO2023117831A1 (de) | 2021-12-20 | 2022-12-19 | Vorrichtung zum messen einer kraft an einer aufzuganlage, verfahren zur überprüfung einer balancierung einer aufzugsanlage, sowie eine aufzuganlage zum ausführen des verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4452809A1 true EP4452809A1 (de) | 2024-10-30 |
| EP4452809B1 EP4452809B1 (de) | 2026-02-04 |
Family
ID=78957538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839784.0A Active EP4452809B1 (de) | 2021-12-20 | 2022-12-19 | Vorrichtung zum messen einer kraft an einer aufzuganlage, verfahren zur überprüfung einer balancierung einer aufzugsanlage, sowie eine aufzuganlage zum ausführen des verfahrens |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250128914A1 (de) |
| EP (1) | EP4452809B1 (de) |
| CN (1) | CN118434661A (de) |
| WO (1) | WO2023117831A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4311011C2 (de) | 1992-07-24 | 1994-07-14 | Arno John | Verfahren und Vorrichtung zur Prüfung eines Aufzugs mit Treibscheibenantrieb |
| JPH0733346A (ja) * | 1993-07-20 | 1995-02-03 | Hitachi Building Syst Eng & Service Co Ltd | エレベータの着床制御装置 |
| CN101020548A (zh) * | 2006-03-14 | 2007-08-22 | 辽宁石油化工大学 | 一种电梯平衡系数测试方法及其测试仪器 |
| DE102007015648A1 (de) | 2006-12-11 | 2008-06-12 | TÜV Nord Systems GmbH & Co. KG | Verfahren und Vorrichtung zum Prüfen von Aufzugsanlagen |
| WO2013068648A1 (en) * | 2011-11-07 | 2013-05-16 | Kone Corporation | Method and arrangement for measuring the balance of an elevator and method for balancing the elevator |
| JP2015096443A (ja) * | 2013-11-15 | 2015-05-21 | 株式会社日立ビルシステム | エレベータの昇降体の重量測定方法及び重量測定装置 |
| CN203877682U (zh) * | 2014-06-13 | 2014-10-15 | 嘉兴市特种设备检测院 | 一种电梯超载保护装置的检测仪 |
| CN105035903B (zh) * | 2015-08-28 | 2018-02-23 | 台州市中奥特种设备检测技术服务有限公司 | 一种电梯载荷测试装置及其试验方法 |
| CN106429686A (zh) * | 2016-10-26 | 2017-02-22 | 广州特种机电设备检测研究院 | 一种基于电机驱动的电梯空载平衡系数检测装置 |
| AU2020376295B2 (en) * | 2019-10-31 | 2024-03-07 | Inventio Ag | Brake device for an elevator cab, comprising an integrated load measuring device, use thereof in an elevator system, and method |
| EP4446269A3 (de) * | 2019-11-12 | 2024-11-06 | KONE Corporation | Aufzugsparkbremse, verfahren zum betrieb eines aufzugssystems und aufzugssystem |
| CN111186742A (zh) * | 2020-01-08 | 2020-05-22 | 长沙纵横电梯工程有限公司 | 一种电梯平衡系数检测装置及方法 |
| CN118632814A (zh) * | 2021-12-20 | 2024-09-10 | 因温特奥股份公司 | 用于测量电梯设备上的力的装置、用于测量电梯设备的可移动部件上的力的方法以及执行所述方法的电梯设备 |
-
2022
- 2022-12-19 WO PCT/EP2022/086537 patent/WO2023117831A1/de not_active Ceased
- 2022-12-19 CN CN202280084313.2A patent/CN118434661A/zh active Pending
- 2022-12-19 US US18/719,300 patent/US20250128914A1/en active Pending
- 2022-12-19 EP EP22839784.0A patent/EP4452809B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4452809B1 (de) | 2026-02-04 |
| US20250128914A1 (en) | 2025-04-24 |
| WO2023117831A1 (de) | 2023-06-29 |
| CN118434661A (zh) | 2024-08-02 |
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