EP2636628A1 - Dispositif de serrage pour un moyen de traction d'une installation d'ascenseur - Google Patents

Dispositif de serrage pour un moyen de traction d'une installation d'ascenseur Download PDF

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Publication number
EP2636628A1
EP2636628A1 EP12158891.7A EP12158891A EP2636628A1 EP 2636628 A1 EP2636628 A1 EP 2636628A1 EP 12158891 A EP12158891 A EP 12158891A EP 2636628 A1 EP2636628 A1 EP 2636628A1
Authority
EP
European Patent Office
Prior art keywords
pressure
hydraulic
piston
pneumatic
tensioning
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Withdrawn
Application number
EP12158891.7A
Other languages
German (de)
English (en)
Inventor
Christian Schulz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Aufzugswerke GmbH
Original Assignee
ThyssenKrupp Aufzugswerke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Aufzugswerke GmbH filed Critical ThyssenKrupp Aufzugswerke GmbH
Priority to EP12158891.7A priority Critical patent/EP2636628A1/fr
Publication of EP2636628A1 publication Critical patent/EP2636628A1/fr
Withdrawn legal-status Critical Current

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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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • 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
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/068—Cable weight compensating devices

Definitions

  • the present invention relates to a tensioning device for a traction means of an elevator system.
  • Speed limitation devices serve to activate a safety gear provided on the elevator car if the speed of a lift cage is too high, via a speed limiter cable (traction means).
  • traction means Such a speed limiter cable is guided via a traction pulley or pulley of a speed limiter and a further roller (so-called tension pulley), which serves to tension the speed governor rope.
  • tension pulley which serves to tension the speed governor rope.
  • a strand of the speed governor rope lying between these pulleys can be moved parallel to the direction of movement of an elevator car. This strand is coupled to a triggering element of a safety gear or braking device, which is attached to the elevator car.
  • a movement of the elevator car causes over the speed limiter rope a rotation of the traction mechanism roller, whereby a rotational speed of this role results, which is proportional to the speed of the elevator car.
  • the speed limiter is in this case designed so that it comes at a presettable speed to a braking effect on the governor speed.
  • the braked speed limiter cable activated subsequently to the moving elevator car via a triggering element, a catching device or braking device.
  • a frictional force dependent on various factors is typically generated by friction between a V-groove of the traction-pulley and the governor cable, with which, for example, the safety gear is mechanically engaged.
  • this force is dependent on the height of the tension force or tensile force acting on the speed governor cable.
  • the available clamping force must be constant or at least variable only in a very small range.
  • the amount of clamping force to be adjusted is determined by the required braking force.
  • a certain minimum tension of the speed governor rope is also necessary in order to limit movements in the cross-sectional plane (ie substantially perpendicular to the cable course) to an acceptable level.
  • the required clamping force also depends on the desired position accuracy of the speed governor cable in different operating states, as well as also according to the speed and the delivery height of the elevator system.
  • the required clamping force of a speed governor rope usually increases with the delivery height of the system.
  • the applied clamping force for a speed governor rope is usually generated by a tension weight.
  • a tension weight acts on the tensioning roller, which is typically provided on the shaft bottom or in the lower part of the shaft.
  • the use of such clamping weights is advantageous in that they ensure a permanent, constant and substantially maintenance-free provision of the clamping force.
  • the provided clamping force can, for. B. be varied by lever mechanisms to reduce the required clamping mass.
  • the disadvantages include the necessary space, as well as the cost and weight of such tension weights during transport and installation.
  • the mentioned disadvantages are intensified with the delivery height of the system and / or the clamping force required for the speed governor cable.
  • an elevator system is known with a speed limiter device, the latter having a weight that uses its weight force to tension the speed limiter cable to provide the desired tractive force.
  • tension rollers which are loaded to produce the necessary clamping force with tensioned springs.
  • Compression springs are considered as reliable as tension weights.
  • danger potentials arise due to the tensioned springs, for example during assembly. It may be necessary to use special manufacturing equipment for installation of such springs, resulting in increased costs.
  • the permissible or possible clamping travel is limited by the length of the spring used, it being further pointed out that the clamping force of a spring is not constant over the tensioning travel.
  • a robust abutment for introducing the spring force in the system and / or the environment is needed.
  • the object of the invention is therefore to provide a device for tensioning a traction device of an elevator installation, such as e.g. a speed limiter rope to provide, with a cost and reliable tension of the rope can be ensured.
  • the device according to the invention With the device according to the invention a very reliable and inexpensive to be supplied pressurization of a tensioning roller for a traction means of an elevator system, in particular for a traction means of a speed limiter device of an elevator system, provided. With the device according to the invention, an increase in the clamping force for providing the respectively desired cable tension can be provided in a simple manner.
  • the hydraulic device or pneumatic device used according to the invention is formed with at least one hydraulically or pneumatically actuable piston-cylinder unit.
  • piston-cylinder units also referred to as hydraulic cylinders or pneumatic cylinders
  • Such piston-cylinder units can be handled in a very simple manner.
  • the tension roller is rotatably mounted on a support, wherein the hydraulic device or the pneumatic device has at least one piston-cylinder unit, which for pressurizing the tension roller is arranged between a base plate of the carrier and an abutment.
  • This embodiment proves to be particularly suitable for uniform loading of the tension roller with a number of piston-cylinder units.
  • the tension roller rotatably on a shaft, wherein the hydraulic device or the pneumatic device act directly on the shaft.
  • the piston rod can be connected to a connecting element at one end, in which the shaft is rotatably mounted in each case. This mechanism is very small.
  • the at least one tensioning roller can be acted upon by a hydraulic device, wherein for providing a pressure, a pressure line operatively connected to the hydraulic device which extends upwards from the hydraulic fluid or the hydraulic fluid and at least partially filled with hydraulic fluid is, is provided.
  • a pressure line operatively connected to the hydraulic device which extends upwards from the hydraulic fluid or the hydraulic fluid and at least partially filled with hydraulic fluid is, is provided.
  • This provides a liquid column which provides hydrostatic pressure.
  • the hydrostatic pressure results from the product of the density of the hydraulic fluid used, the height of the pressure line above the hydraulic devices and the gravitational acceleration.
  • a hydraulic fluid reservoir is formed in the upper region of the pressure line, in particular at its upper end.
  • a reservoir or container which or which may be formed in fluid communication or separable or separated from the pressure line, an adaptation of the provided hydrostatic pressure in a simple manner can be achieved.
  • piston-cylinder units with different cylinder or piston diameters and / or piston rod diameters are provided.
  • the clamping force acting on a piston-cylinder unit results from the product of the pressure provided and the effective cylinder or piston surfaces.
  • varying the cylinder or piston diameter and / or the piston rod diameter results in a simple way to modify the forces generated.
  • water is used as the hydraulic fluid.
  • Water is available in a very simple and inexpensive way, and also proves to be inexpensive in terms of maintenance.
  • the device to an external or a building associated with water supply for example, connect a municipal water supply or a building water system.
  • Such connections provide a simple way to provide the base pressure, which may need to be adjusted by using appropriate pressure control valves to a system pressure.
  • the hydraulic device or the pneumatic device expediently has at least one throttle valve.
  • the hydraulic device or the pneumatic device has at least one pressure regulating valve, in particular an adjustable pressure regulating valve.
  • external pressures for example the pressure provided by a municipal water supply or a pressure provided in a hydraulic fluid reservoir, can be regulated to a suitable pressure.
  • the tension means to be tensioned by means of the device according to the invention is a traction means Speed limiting device, in particular designed asagisbe bayseil.
  • a first preferred embodiment of the device according to the invention for tensioning a pulling means of a Elevator system, here a speed limiter cable 112, is designated 100 in total.
  • the speed limiter cable 112 is guided around a tension roller 110.
  • a speed limiter roll around which the speed limiter cable 112 also runs, is omitted for the sake of clarity.
  • the roller 110 is rotatably mounted about an axis or shaft 111, which is formed on a carrier 114.
  • the carrier 114 has two carrier elements, which carry the axis 111 passing through the tensioning roller 110 on both sides.
  • FIG. 1 In the perspective of FIG. 1 is, as no further explanation requires, only a support member of the carrier 114 visible.
  • the carrier 114 extends through a horizontal plate 140a of an abutment 140 formed with an aperture and is reciprocable in that aperture (i.e., perpendicular to the plate 140a in the illustrated embodiment).
  • the abutment 140 has vertically aligned plates 140b, 140c in addition to the horizontal plate 140a. These plates 140b, 140c can also be designed in the form of a cylinder jacket, or form such a cylinder jacket.
  • a base plate 115 is formed.
  • piston-cylinder units 130 are provided between the horizontal plate 140a and the base plate 115.
  • These piston-cylinder units 130 are connected to a pressure line 132, and this is shown for reasons of clarity only for a piston-cylinder unit.
  • the piston-cylinder units 130 and the pressure line 132 together with other components such.
  • a hydraulic or a pneumatic device 150 for applying force to the tension roller 110 as will be explained below.
  • a hydraulic device will be described by way of example.
  • the device 150 embodied as a hydraulic device comprises a section 132a of the pressure line 132 which extends in particular vertically upwards and which opens into a hydraulic fluid reservoir or reservoir 134 at the upper end of the pressure line.
  • a hydrostatic pressure can be provided with which the piston-cylinder units 130 can be pressurized.
  • the piston-cylinder units 130 are able to push down the base plate 115 and thus the entire carrier 114 with respect to the horizontal plate 140 a, whereby a force acts on the tension roller 110. This force is used to tension the speed limiter cable 112.
  • a pressure control valve 138 is suitably connected, as will be described in detail with reference to the further embodiments.
  • the hydrostatic pressure provided in the piston-cylinder units 130 by means of the upward-rising pressure line 132, 132a is proportional to the height of the pressure line 132, that is to say to the vertical extent above these units. If a stronger clamping force is necessary during the operating time of an elevator installation, this can be provided, for example, by further extending the upwardly extending pressure line 132 upwards. Additionally or alternatively, if a pressure vessel 136 is provided, it is possible to provide such an increase in the pressure to be provided in the pressure line 132 by a corresponding adjustment of the pressure regulating valve 138.
  • the upwardly extending line 132, 132a thus represents a standing column of liquid.
  • the liquid column can be led upwards by the elevator shaft, at most up to a machine room.
  • the container 134 provided at the upper end of the liquid column can expediently absorb at least as much liquid as the hydraulic piston-cylinder units 130 absorb over their entire tensioning travel (due, for example, to rope elongation and building settlement).
  • pressure generating means shown together, namely the upwardly extending pressure line 132, 132 a and the pressure vessel 136 formed with a pressure control valve 138, also individually, so are used independently. It should be noted that in the case of a coupled or optional provision of these two pressure generating means expediently check valves are provided, which if necessary or desired can ensure a decoupling of the two pressure generating means.
  • FIG. 1 On the whole, the mechanism shown provides a very robust and reliable way of tensioning the overspeed governor rope because of the very uniform pressurization of the system due to the piston-cylinder units acting between the horizontal plate 140a and the base plate 115.
  • the design with two piston-cylinder units 130 is shown by way of example only.
  • embodiments with one, three, four or more piston-cylinder units are also conceivable.
  • FIG. 2 total A second preferred embodiment of the clamping device according to the invention is in FIG. 2 total designated 200.
  • the pneumatic or hydraulic device designated 250 is the pneumatic or hydraulic device.
  • two traction means or cables of an elevator system can be tensioned by means of pressurization.
  • a first cable 212 is again a speed governor cable.
  • a second cable 213 may, for example, be a sub-cable of an elevator installation.
  • FIG. 2 shown system is formed only with a liquid column representing, upwardly extending pressure line 232 to provide the necessary (hydrostatic) pressure. Pressurization by means of a pressure vessel pressure regulating valve system as shown in FIG. 1 is shown is also possible.
  • the pressure line has a Height h with respect to the piston-cylinder units 230, 231 described in detail below.
  • a container 234 is provided for hydraulic fluid.
  • the speed limiter cable 212 is guided around a tension roller 210, the lower cable 213 around a tension roller 211.
  • the tension rollers 210, 211 are each rotatably mounted about axes or shafts 210a and 211a.
  • the piston-cylinder units 230 and 231 respectively engage on the axles 210a, 211a.
  • piston rods 230a, 231a of pistons 230b, 231b are connected to connecting members 214, 215 in which the shafts 210a, 211a are respectively rotatably supported.
  • the pistons 230b, 231b cooperate with cylinders 232a and 233a, respectively, which are fixedly attached to the shaft bottom or to a suitable support (abutment), for example.
  • the piston rod 230a has a diameter d1
  • the piston 230b or the cylinder 232a has a diameter D1.
  • the piston rod 231a has a diameter d2
  • the piston 231b or the cylinder 233a has a diameter D2.
  • the pressure line 232 is in fluid communication with both cylinders. Like from the FIG. 2 follows, acts on the piston 230b and 231b respectively a downward force.
  • the forces acting on the pistons 230b, 231b are in the case of equal diameter of the respective piston rods and piston or cylinder of the same size, since the area to which the pressure provided by the pressure line 232 can act, is the same in both cases. If different forces are required on the pistons 230b, 231b, this is possible by correspondingly adapting the diameters of the respective piston rods or the pistons or cylinders.
  • FIG. 2 can be seen further that in each case a manometer 260, 261 and a throttle valve 262, 263 are provided in the pressure lines, if possible in the vicinity of the respective consumers, ie the piston-cylinder units.
  • the manometers 260, 261 serve as safety devices. With such pressure gauges, the pressure prevailing in the pressure line 232 can be monitored in a simple manner. For example, upon detection of an undershooting of a necessary pressure, a corresponding (electrical) safety circuit can be interrupted.
  • throttle valves 262, 263 is an effective damping of the hydraulic device (or a pneumatic device), for example, in a sudden deceleration of a car, an electrically or automatically triggered emergency stop, a mechanical catch of the car or for vibration damping during normal operation, realized.
  • FIG. 3 a further preferred embodiment of the clamping device according to the invention is shown and indicated generally at 300.
  • a tensioning pulley 310 serves to tension a speed limiter cable 312.
  • the roller is rotatably mounted about a shaft or axle 311.
  • the piston-cylinder unit, designated here by 330 acts here in contrast to the embodiment according to FIG. 2 by depressing the tension roller 310.
  • the piston-cylinder unit on a support means 305 which is arranged above the tension roller 310, is provided.
  • Via a line 332 in which in turn a pressure gauge 360 and a throttle valve 362 may optionally be introduced, the piston-cylinder unit 330 can be pressurized.
  • a change in the force acting on the piston 330b is possible only by changing the piston or cylinder diameter D.
  • the diameter of the piston rod 330a has no influence here, since the piston rod acts on the side of the piston facing away from the hydraulic fluid.
  • the pneumatic or hydraulic device is designated as a whole with 350.
  • FIG. 3 presented two options, which can be used alone or together.
  • a container 334 which serves as a reservoir for hydraulic fluid or pneumatic fluid.
  • the pressure line 332 to the container 334 again constitutes a liquid column, by means of which a hydrostatic pressure can be provided.
  • a further pressure reservoir 390 can be used for providing or changing the pressure, which can be connected to the system via an adjustable pressure valve 340.
  • this pressure reservoir 390 may be formed hydraulically or pneumatically. It is particularly advantageous to use the municipal water supply or a building water system as the pressure reservoir 390.
  • the water pressure provided in this case can be adjusted down to the needs of the system by means of the adjustable pressure control valve 340 in a suitable manner.
  • a check valve 370 is provided between the throttle valve 362 and the pressure control valve 340.
  • hydraulic fluids are available in principle as the hydraulic fluid. These should be selected according to the operating temperature, the piping and sealing materials used, their density and the costs incurred. As a particular advantage in terms of cost and maintenance proves the use of water as hydraulic fluid.
  • pneumatic fluids in the case of pneumatic systems, here typically air is used.
  • the pressure generated does not depend on the diameter of the liquid column or pressure lines 132, 232, 332. Therefore, very thin pressure lines can be used, whereby the required amount of liquid can be effectively reduced.
  • the available clamping force can be varied both by varying the Kolbendruchmesser and optionally the piston rod diameter of the piston-cylinder units, as well as the vertical line length and the density of the hydraulic fluid used.
  • the available clamping force can be varied both by varying the Kolbendruchmesser and optionally the piston rod diameter of the piston-cylinder units, as well as the vertical line length and the density of the hydraulic fluid used.
  • a favorable economic combination are chosen.
  • liquid reservoirs or reservoirs 134, 136, 234, 334, 390 used are constructed so fluid-tight that an evaporation of hydraulic fluid can be excluded, so that a maintenance effort can be limited to control the fluid level and at Need to replenish the amount that may have escaped through diffusion and gaskets.
  • the monitoring of the fluid level can in particular also be carried out electrically or automatically.
  • An advantage of all illustrated embodiments of the invention is the low weight of the hydraulic or pneumatic tensioning devices used. As a result, costs can be saved during transport and installation. In addition, build such devices compared to conventional solutions very small.
  • the liquid column as described is expediently realized in that a pressure line is connected to the connection of the hydraulic cylinder.
  • the entire elevator shaft can be used for the liquid column, ie the vertically aligned pressure line.
  • the tank to be mounted at the top of the pressure line should be able to hold at least as much fluid as all connected hydraulic cylinders can accommodate over their entire tensioning travel. All pressure lines can be vented by opening at the bottom with constant refilling of the container. After venting, a pressure is applied to each piston-cylinder unit, which depends exclusively on the height of the liquid column and the density of the liquid used.

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  • Mechanical Engineering (AREA)
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EP12158891.7A 2012-03-09 2012-03-09 Dispositif de serrage pour un moyen de traction d'une installation d'ascenseur Withdrawn EP2636628A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12158891.7A EP2636628A1 (fr) 2012-03-09 2012-03-09 Dispositif de serrage pour un moyen de traction d'une installation d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12158891.7A EP2636628A1 (fr) 2012-03-09 2012-03-09 Dispositif de serrage pour un moyen de traction d'une installation d'ascenseur

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EP2636628A1 true EP2636628A1 (fr) 2013-09-11

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105384028A (zh) * 2015-12-15 2016-03-09 东南电梯股份有限公司 液压缓冲式电梯涨紧装置及涨紧方法
WO2016193631A1 (fr) * 2015-06-04 2016-12-08 Sodimas Surveillance d'une installation d'ascenseur a boucle fermee
DE202015105373U1 (de) * 2015-10-09 2017-01-11 Wittur Holding Gmbh Federgespannte Spannvorrichtung für Geschwindigkeitsbegrenzerseil
EP3901081A1 (fr) * 2020-04-22 2021-10-27 Otis Elevator Company Surveillance d'ensemble de compensation d'ascenseur
US11738971B2 (en) 2021-06-25 2023-08-29 Otis Elevator Company Elevator governor tension frame damper

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522285A (en) * 1983-10-20 1985-06-11 Otis Elevator Company Hydraulic tie-down for elevators
JPH0753156A (ja) * 1993-08-17 1995-02-28 Mitsubishi Denki Bill Techno Service Kk エレベーター用ロープの張り車装置
JPH07157230A (ja) * 1993-12-03 1995-06-20 Mitsubishi Denki Bill Techno Service Kk エレベータの調速機ロープの張力発生装置
US5861084A (en) * 1997-04-02 1999-01-19 Otis Elevator Company System and method for minimizing horizontal vibration of elevator compensating ropes
JP2004067365A (ja) * 2002-08-09 2004-03-04 Otis Elevator Co エレベータ装置
US20070151810A1 (en) * 2004-07-30 2007-07-05 Esko Aulanko Elevator
EP1900673A1 (fr) 2005-07-05 2008-03-19 Mitsubishi Denki Kabushiki Kaisha Dispositif à poulie de tension pour câble de commande d ascenseur
WO2011037557A1 (fr) * 2009-09-22 2011-03-31 Otis Elevator Company Dispositif tendeur de régulateur de vitesse d'ascenseur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522285A (en) * 1983-10-20 1985-06-11 Otis Elevator Company Hydraulic tie-down for elevators
JPH0753156A (ja) * 1993-08-17 1995-02-28 Mitsubishi Denki Bill Techno Service Kk エレベーター用ロープの張り車装置
JPH07157230A (ja) * 1993-12-03 1995-06-20 Mitsubishi Denki Bill Techno Service Kk エレベータの調速機ロープの張力発生装置
US5861084A (en) * 1997-04-02 1999-01-19 Otis Elevator Company System and method for minimizing horizontal vibration of elevator compensating ropes
JP2004067365A (ja) * 2002-08-09 2004-03-04 Otis Elevator Co エレベータ装置
US20070151810A1 (en) * 2004-07-30 2007-07-05 Esko Aulanko Elevator
EP1900673A1 (fr) 2005-07-05 2008-03-19 Mitsubishi Denki Kabushiki Kaisha Dispositif à poulie de tension pour câble de commande d ascenseur
WO2011037557A1 (fr) * 2009-09-22 2011-03-31 Otis Elevator Company Dispositif tendeur de régulateur de vitesse d'ascenseur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193631A1 (fr) * 2015-06-04 2016-12-08 Sodimas Surveillance d'une installation d'ascenseur a boucle fermee
FR3037052A1 (fr) * 2015-06-04 2016-12-09 Sodimas Surveillance d'une installation d'ascenseur a boucle fermee
DE202015105373U1 (de) * 2015-10-09 2017-01-11 Wittur Holding Gmbh Federgespannte Spannvorrichtung für Geschwindigkeitsbegrenzerseil
CN105384028A (zh) * 2015-12-15 2016-03-09 东南电梯股份有限公司 液压缓冲式电梯涨紧装置及涨紧方法
CN105384028B (zh) * 2015-12-15 2017-08-25 东南电梯股份有限公司 液压缓冲式电梯涨紧装置及涨紧方法
EP3901081A1 (fr) * 2020-04-22 2021-10-27 Otis Elevator Company Surveillance d'ensemble de compensation d'ascenseur
US11524872B2 (en) * 2020-04-22 2022-12-13 Otis Elevator Company Elevator compensation assembly monitor
US11945690B2 (en) 2020-04-22 2024-04-02 Otis Elevator Company Elevator compensation assembly monitor
US11738971B2 (en) 2021-06-25 2023-08-29 Otis Elevator Company Elevator governor tension frame damper

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