EP3042874A1 - Surveillance de courroie d'ascenseur - Google Patents

Surveillance de courroie d'ascenseur Download PDF

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Publication number
EP3042874A1
EP3042874A1 EP15000013.1A EP15000013A EP3042874A1 EP 3042874 A1 EP3042874 A1 EP 3042874A1 EP 15000013 A EP15000013 A EP 15000013A EP 3042874 A1 EP3042874 A1 EP 3042874A1
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EP
European Patent Office
Prior art keywords
contacting
elevator belt
contact
elevator
resistance
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
Application number
EP15000013.1A
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German (de)
English (en)
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EP3042874B1 (fr
Inventor
Tamas Onodi
Andreas Dreier
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Woertz Engineering AG
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Woertz Engineering AG
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Filing date
Publication date
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Priority to EP15000013.1A priority Critical patent/EP3042874B1/fr
Publication of EP3042874A1 publication Critical patent/EP3042874A1/fr
Application granted granted Critical
Publication of EP3042874B1 publication Critical patent/EP3042874B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • B66B7/1207—Checking means
    • B66B7/1215—Checking means specially adapted for ropes or cables
    • B66B7/1223—Checking means specially adapted for ropes or cables by analysing electric variables

Definitions

  • the invention relates to a device for monitoring elevator belts, for example by means of resistance measurement by four-wire measurement, a monitored elevator installation and a method for monitoring elevator belts.
  • Lifting cables for lifts are u.a. designed as flat bands or straps, as they have a twist-free rolling and unwinding and a relatively high load capacity.
  • WO 2005/094249 A2 For carrying capacity of the tension cables or the entire elevator belt, it is for example in the document WO 2005/094249 A2 have been proposed to monitor the electrical cable resistance.
  • the traction cables are electrically contacted by means of so-called connecting elements, which penetrate with their end the protective jacket over the traction cable.
  • a so-called clamp element on the back provides back pressure.
  • WO 2000/58706 A2 describes the use of a so-called Kelvin bridge for measuring a suspension rope resistance.
  • the ends of a supporting cable are connected to a power source, and the current flowing through the carrying cable tension is measured.
  • a first aspect relates to a device for monitoring an elevator belt with at least two electrically conductive tension cables embedded in an electrically insulating jacket by means of resistance measurement.
  • the traction cables run against each other electrically isolated and lying parallel to each other in a common plane in the jacket.
  • the device comprises a contacting device with at least one contacting device with contact elements and a resistance measuring system which, with the aid of the contact elements, makes electrical contact with the tension cables of the Elevator belt is connectable.
  • the at least one contacting device is equipped with contact elements for each of the at least two tension cables for stripping-free contact contacting of the tension cables by the electrically insulating jacket.
  • the resistance measuring system is adapted to determine the electrical resistance of at least one pull rope by means of four-wire measurement, ie with separate contacting for current flow and voltage measurement.
  • four-wire measurement the feeding of a measuring auxiliary current via the StromkolAuthAuthtechnik mich and thus the flow of the measuring auxiliary current along the at least one traction cable is realized.
  • About theiststiciansAuthtechniktechnik the at least one pull rope a falling voltage can be tapped off.
  • the electrical tension cable resistance can be determined with the aid of the falling electrical voltage and the known measuring auxiliary current.
  • a further aspect relates to an elevator installation, comprising at least one elevator cage, a conveyor for the at least one elevator cage and a device for monitoring the elevator belt of the type mentioned above.
  • the conveyor has at least one elevator belt with a plurality of tension cables which are fastened to the elevator cage.
  • Another aspect relates to a method for monitoring elevator belts with at least two electrically conductive tension cables embedded in an electrically insulating jacket by means of resistance measurement.
  • the traction cables run against each other electrically isolated and lying parallel to each other in a common plane in the jacket.
  • the method is performed by means of a monitoring device, wherein the monitoring device comprises a resistance measuring system.
  • the resistance measuring system is electrically connected by means of stripping-free contact contacting with the tension cables through the electrically insulating jacket.
  • the method comprises the following steps to use the resistance measuring system to determine the electrical resistance of at least one traction cable by means of four-conductor measurement, ie with separate contacting for current flow and voltage measurement: supply of a measuring auxiliary current via the current flow contacting and thus the flow of the auxiliary measuring current along the at least a pull rope. Picking up the falling electrical voltage of at least one pull rope via the voltage measurement contact. Determining the electrical cable resistance with the help of the falling voltage and the known measuring auxiliary current.
  • a characteristic of a stripping-free contact contacting lies in the non-cohesive connection of the contact elements, e.g. Pins, with the ropes.
  • the electrical contact is essentially maintained by the elasticity of the hawser strand and the counter-pressure of the haulage sheathing. This pressure-counter-pressure state can be subject to temporal and environmental changes, whereby the quality of the electrical contact of the contact elements to the traction cable can change over time.
  • the inventors have realized that a combination of two techniques, namely the stripping-free contact contacting of the tension cables and the resistance determination of the tension cables by means of four-conductor measurement, provides a simple method of contacting pull cables which is robust to the above-mentioned temporal changes. With the four-wire measurement, namely, a possible influence of the contact resistance on the measurement result can be kept low.
  • the described device is provided for monitoring an elevator belt with at least two electrically conductive tension cables embedded in an electrically insulating jacket.
  • the traction cables run against each other electrically isolated and lying parallel to each other in a common plane in the jacket.
  • the monitoring of an elevator belt is done by measuring the electrical resistance of the traction cables embedded in them.
  • the tension cables may be formed as individual strands, for example of steel, or as wire cables of a plurality of such strands.
  • the traction cables are, for example, ropes comprising 6 strands of 7 wires each.
  • a 6x19 standard rope has 6 strands, each with 19 wires.
  • the strands are pressed onto an insert made of a plastic rod so that the plastic completely fills the interior between the strands, which stabilizes the strands and prevents their contact.
  • the wire ropes are classified according to DIN EN 12385 according to their structure.
  • wires Due to the stranding of the wires, they can completely support the wind after a few turns away from their breakage. Some of the wires may be broken before safety is compromised. The number of broken wires of the pull ropes can be monitored with the described device.
  • the device comprises a contacting device with at least one contacting device at one end or at both ends of the elevator belt and a resistance measuring system which can be electrically connected to the tension cables of the elevator belt with the aid of the contacting device.
  • the at least one contacting device is equipped with contact elements for each of the at least two tension cables for stripping-free contact contacting of the tension cables by the electrically insulating jacket.
  • the contacting is, for example, a tapping contact by means of thorns which penetrate the jacket, and thus tapping the tension cables without stripping, i. electrically contact the passing tow rope.
  • the resistance measuring system is adapted to measure the electrical resistance of at least one pull rope by means of four-wire measurement, i. with separate contact for current flow and voltage measurement to determine.
  • a measuring auxiliary current is supplied via the current flow contact, ie via the contact elements, which are connected, for example, to a current source which supplies a constant regulated current.
  • the flow of the auxiliary measuring current is achieved along the train rope to be measured.
  • a falling voltage can be tapped off.
  • the electrical tension cable resistance can be determined with the aid of the falling electrical voltage and the known measuring auxiliary current.
  • the contacting device comprises two contacting devices, wherein a contacting device is provided for each end of the elevator belt.
  • the contacting device is spatially extended over the entire length of the elevator belt and the measuring auxiliary current can flow between these two contacting devices.
  • the contacting device comprises only one contacting device, wherein the contacting device is provided at one end of the elevator belt.
  • the measuring system of the monitoring device measures the electrical resistance of pull ropes of the elevator belt which are electrically connected to one another at the opposite end of the elevator belt, ie at least two pull ropes at a time.
  • a plurality of tension cables are connected to each other, whereby the number of required contact elements is reduced.
  • the Buchseil resistors can not be separated but determined only in this composite.
  • a chain of tension cables can be formed, which requires only two contact elements for measuring voltage.
  • the two outer traction cables are energized and voltage-contacted while the inner traction cables on alternate sides are in electrical contact with each other to form a long conductor.
  • the at least one contacting device serves both the current flow contact and the voltage measurement contact.
  • the contacting device has contact elements for current contacting and for voltage contacting, for example Contact pins that can penetrate a plastic or cable sheath.
  • the contact elements for power contacting are electrically connected to the output of the power source, for example via one or more cables.
  • the contact elements for voltage contact are electrically connected to the input of the voltmeter.
  • the at least one contacting device comprises at least two sub-devices; A power contacting subdevice and a voltage-contacting subdevice.
  • the power contacting subdevice has contact elements electrically connected to the current flow to the output of the power source.
  • the voltage-contacting subdevice has contact elements electrically connected to the input of the voltmeter for voltage measurement.
  • the at least two sub-devices are spatial, i. structurally, separated from each other, in other embodiments, the contacting device comprises the at least two sub-devices in a common housing.
  • the monitoring device has a connecting line, which electrically connects the contact elements with the resistance measuring system, which may also be located further away in these cases.
  • the resistance measuring system determines the falling voltage and then calculates from this voltage and the known measuring auxiliary current the resistance of the pull rope or the tension cables between the voltage measurement contacts of the at least one contacting device.
  • the lead is formed as a flat cable, i. the wires of the connecting lead are in a well-defined relationship to each other, namely parallel spaced apart in a plane.
  • the contact elements of the contacting device each electrically contact a pull rope of the elevator belt with a wire of the flat cable, and the flat cable has as many wires as the elevator belt has pull cables.
  • the wires of the flat cable are contacted stripping of the contact elements. This means that electrical contact between the contact elements and the wires of the flat cable can be made without first removing the cable insulation.
  • traction cables and flat cable cores are electrically connected to each other stripping free, and always a traction cable with a core of the flat cable.
  • the contact elements of the contacting device are designed as contact pins.
  • the mandrels penetrate when pressurized by the sheath of the elevator belt and / or the sheath of the flat cable and make an electrical contact with the running inside the traction cables or wires.
  • the contact elements are designed as contact blades or contact pins or contact pins.
  • the contact pins are formed as individual mandrels. They each contact one wire of the flat cable with a pull rope of the elevator belt. One and the same single mandrel penetrates coming from one side of the vein of the flat cable and penetrates at least partially into a pull rope. The penetration or penetration leads, for example, to a displacement and displacement of the strands in the elevator belt and / or in the flat cable. Therefore, the contacting devices are attached to the end of the elevator belt, i. behind the suspension, where no more pulling forces act.
  • the contact elements are designed as double arbors. They are arranged between the elevator belt and the flat cable and their partial mandrels extend in opposite directions.
  • the double mandrels are therefore to be understood as nails with two tips and may have a diamond-shaped longitudinal sectional area.
  • the double mandrels may alternatively comprise two individual partial mandrels, which are electrically connected to each other in the middle between the mandrels.
  • an insulating layer can be located between the mandrels, which is selectively bridged with a connecting piece of a partial mandrel to the other.
  • a double mandrel contacts a respective strand of the flat cable with a pull rope of the elevator belt.
  • a partial mandrel penetrates the wire insulation of the flat cable and is thus electrically connected to an underlying core of the flat cable.
  • the opposite part of the mandrel penetrates the shell of the elevator belt and is thus electrically connected to an underlying pull rope of the elevator belt. Since the two partial arbors are electrically connected to each other, the pairs of traction cable and flat cable core are electrically connected to each other, both stripping free.
  • the flat cable is disposed at right angles to the hoop and tensions in the contacting area, i. in the region of the elevator belt where the contacting device is arranged, a plane parallel to the plane of the elevator belt.
  • the flat cable is at an angle of 90 ° on the elevator belt and is penetrated in this position by the contact pins of the contacting either completely or at least partially and the wires of the flat cable are thus in electrical contact with the tension cables of the elevator.
  • the contact elements are arranged in at least two rows and the contact elements have a diameter which is greater than the distance between two tension cables. This results in a "matrix arrangement" which allows contact elements having a maximum diameter of more than one Ceiseilabstand.
  • the contact elements may taper from their tip to their attachment, where, as mentioned above, they can reach a maximum width or a maximum diameter of more than one tension distance. This conical shape causes an increased pressure on the stranding of the strands, whereby the electrical contact is improved.
  • the described device for monitoring the elevator belt in its various embodiments and configurations may be integrated in an elevator installation.
  • an elevator installation also has at least one elevator cage for the transport of persons and / or loads and a conveyor device for moving the at least one elevator cage.
  • the conveyor comprises at least one elevator belt to which the at least one elevator cage is attached.
  • the elevator belt comprises at least two tension cables which carry the weight of the elevator cage and the persons and / or loads to be transported.
  • the length of the elevator belt on one side of the drive roller is shortened and correspondingly lengthened on the other side.
  • the elevator cage may be moved up and down by rolling up and down the elevator belt.
  • the method described is provided for monitoring elevator belts with at least two electrically conductive tension cables embedded in an electrically insulating jacket by means of resistance measurement.
  • the traction cables are electrically insulated from each other in parallel to each other in a common plane lying in the jacket.
  • the method is carried out by means of a monitoring device comprising a resistance measuring system.
  • the monitoring device additionally has a contacting device with at least one contacting device which, with contact elements for each of the at least two traction ropes, produces a stripping-free contact contact with the traction ropes of the elevator belt through the electrically insulating jacket.
  • Contact contacting here means a non-fixed contact, so by removing the contact again releasable connections.
  • a contacting device is arranged either at one end of the elevator belt or at both ends of the elevator belt.
  • the contact elements By the contact elements, the traction cables of the elevator belt are electrically connected to the resistance measuring system via the contacting device.
  • the method for monitoring elevator belts comprises several steps in order to be able to ensure the carrying capacity of the elevator belt.
  • the carrying capacity of the elevator belt is determined by the resistance of the tension cables running in the belt. In the case of damage to the tension cables, the measured resistance increases. These damages can be breaks of single wires, over strands, up to the break of a whole pull rope.
  • a four conductor measurement is performed, i. a resistance measurement with separate contacting for current flow and voltage measurement.
  • a measuring auxiliary current is fed via the StrommannAuthierung in the at least one traction cable, for example, so that the traction cable is traversed over the entire supporting length of the elevator belt of this auxiliary measuring flow, ie at least in the piece of the elevator belt that between the attachment points of the elevator belt lies.
  • An electrical voltage is tapped at the voltage measurement contacts. This electrical voltage is tapped at a position on the elevator belt within the Strom WegAuth réelleen, but outside the attachment points of the elevator belt to the elevator system, ie at positions where no tensile forces act.
  • the method of monitoring elevator belts employs a monitor having one or more of the features described above.
  • the monitored elevator belt has more than two pull ropes, of which in some of the figures only a smaller number, e.g. two or four is shown.
  • An elevator installation 1 in a building according to Fig. 1 has a conveyor 2, which has, inter alia, a lift cage 6 for the transport of persons and / or loads.
  • the elevator installation 1 comprises an elevator shaft with guide rails for the elevator cage 6.
  • the components of the conveyor device 2 are described in the description of FIGS Figures 2 and 3 explained in more detail.
  • the elevator cage 6 is connected via an elevator belt 7 to the drive of the conveyor 2. With the help of a counterweight 13 (see Figures 2 and 3 ), the elevator cage can be moved along in the elevator shaft, thus transporting the persons and / or the charged loads into the various floors of the building.
  • the elevator installation 1 furthermore has a monitoring device 3 in order to check the carrying capacity of the elevator belt 7.
  • the elevator belt 7 comprises a plurality of tension cables 8, of which in FIG. 1 two are shown.
  • the traction cables 8 are in a common plastic sheath 31 (s. FIG. 15 ) arranged. These traction ropes 8 carry the weight of the elevator cage 6 together with the persons to be transported and / or loads.
  • the tension cables 8 Due to the continuous tensile and rolling stress of the tension cables 8, they may wear over time or damage, i. the wires and / or wire strands forming the traction cables 8 may break at one or more points and thus jeopardize the carrying capacity of the entire elevator belt 7.
  • the plastic jacket 31 protects the traction cables 8 from external influences, such as moisture, and increases the traction of the elevator belt 7, whereby a reliable conveyance of the elevator cage 6 by the drive of the conveyor 2 is ensured. On the other hand, however, this protective jacket 31 prevents an inspection of the traction cables 8 for damage due to optical observations, such as, for example, by surveillance cameras or by maintenance personnel.
  • the elevator installation 1 is therefore provided with the already mentioned monitoring device 3, which checks the integrity of the tension cables 8 by means of resistance measurement by a measuring system 4. If one or more wires of one of the traction cables 8 are broken, the electrical resistance of this traction cable 8 increases.
  • the measuring system 4 is set up to register such resistance increases.
  • the traction cables 8 are electrically contacted via a contacting device 5 and electrically connected to the measuring system 4 via the wires 11 of a connecting line 10.
  • An electric current is fed to the traction cables 8 and the voltage dropping across them is measured by the measuring system 4.
  • the two traction cables 8 at one end of the Lifting belts 7 form an electrical connection 9 and form a series connection, whereby they only have to be electrically contacted at one end in order to determine the common resistance.
  • the resistance can be determined, which is a measure of the carrying capacity of the tension cables 8, and thus any damage occurring to the conveyor 2 can be detected and corrected before danger to persons and / or loads.
  • FIG. 2 An embodiment of an elevator conveyor 2 and a monitoring device 3 together with the measuring system 4, each with a contacting device 50 or 50 'at the two ends of the elevator belt 7 is in Fig. 2 shown.
  • An exemplary embodiment of a conveyor 2 according to Fig. 2 has an elevator cage 6 and a counterweight 13.
  • the elevator cage 6 and the counterweight 13 are attached to an elevator belt 7, which is fastened via the suspensions 12 to the elevator installation 1 or to the surrounding building.
  • These suspensions 12 absorb the tensile forces of the elevator belt 7 and divert them to the building.
  • the elevator belt 7 is guided between the two suspensions 12 via three rollers, namely an elevator basket support roller 14, a drive roller 18 and a counterweight support roller 16.
  • the support rollers 14 and 16 are respectively mounted on associated axes 15 and 17.
  • the drive roller 18 has a drive axle 19 on which it is mounted.
  • the drive roller 18 is driven by a drive, for example an electric motor.
  • the length of the elevator belt 7 is shortened on one side of the drive roller 18 and extended accordingly on the other side.
  • the elevator carrier roller 14 and thus the elevator cage 6 fastened thereto are moved up or down within an elevator shaft of an elevator installation 1.
  • End of the elevator belt 7 here refers to the piece of the elevator belt 7 beyond the suspensions 12, ie where there are no tensile forces through the elevator cage 6 and / or the counterweight 13 on the traction cables 8 of the elevator belt 7 act.
  • the suspensions 12 are to be understood as a strain relief for the elevator belt 7, so to speak.
  • the contacting device 5 is divided into two contacting devices 50 and 50 'at the respective ends of the elevator belt 7.
  • Each of the two contacting devices 50, 50 ' has two contact points for each pull rope 8 of the elevator belt 7, one for power supply and one for voltage measurement.
  • These current flow and voltage measurement contacts are electrically connected via a connecting line 10 to a measuring system 4 for traction cable resistance measurement.
  • a conveyor 2 hang like in FIG. 2 , the elevator cage 6 and the counterweight 13 on an elevator belt 7, which is attached via the suspensions 12 to the elevator installation 1 or to the surrounding building.
  • the structure and operation of the elevator is similar to the embodiment in the description in connection with Fig. 2 is explained.
  • the monitoring device 3 of the exemplary elevator installation 1, however, has a different structure.
  • the traction cables 8 of the elevator belt 7 have at one end in pairs an electrical connection 9, whereby always two traction cables 8 form a series circuit. At the other end, the traction cables 8 are contacted by a contacting device 5 electrically.
  • the contacting device 50 coincides with the contacting device 5.
  • the contacting device 50 has two contacts per pull rope 8, as in connection with Fig. 2 is described. Both contacts are connected via a connecting line 10 with a measuring system 4 for measuring resistance, see Fig. 4 ,
  • the measuring system 4 has a controllable constant current source 20, which serves to supply the elevator belt 7, more precisely the traction cables 8 embedded therein, with a constant measuring auxiliary current.
  • the poles of the constant current source 20 are electrically connected via the wires 11 of a connecting line 10 with Strommanntitletechniken at the ends of the traction cables 8, see FIG. 2 , At the ends here means beyond the suspensions 12, ie without tensile load by the elevator cage. 6
  • the connecting line 10 can be the same as for the power supply via the Strommanntitle ist.
  • the controllable constant current source 20 and the voltage measuring device 21 are each connected via interfaces to a data bus 24. Furthermore, a processor 22 and a data memory 23 are connected to this data bus 24. In the data memory 23, for example, information about the various Glasseil resistors, the measured voltage waveforms and reference values for resistors and associated load capacities for traction ropes 8 are stored.
  • the processor 22 controls the current source 20 within fixed intervals for current and voltage, so that a suitable measuring auxiliary current is applied to the tension cables 8. "Suitable" means that the measuring auxiliary current is sufficiently large to produce a voltage drop measurable with the given voltmeter 21 with the desired accuracy, without on the other hand causing damage due to current flow, e.g. caused by heat development.
  • an IO unit input / output unit
  • information about the current Switzerlandseil resistors are displayed on a graphical user interface 25.
  • damage such as the breaking of a pull rope 8 or the breakage of one or more strands of a pull rope 8
  • alarm can be triggered.
  • the elevator cage 6 can be brought into a parking position and the conveyor 2 inspected and repaired before persons or loads are damaged by a crash due to a broken or broken traction cable 8.
  • the flowchart of Fig. 5 shows a monitoring method, for example, in the monitoring devices 3 of Fig. 1 to 4 can be carried out.
  • the resistance measurement ie the voltage measurement along the traction cables 8 is repeated continuously over a defined time interval. This corresponds to the yes-answer loop of step 5.3 in FIG. 5 which leads back to step 5.2.
  • Fig. 6 shows an embodiment of a four-wire measurement assembly for detecting a rope-pull cable resistance R for unknown lead resistances R 11, R 12, R 13 and R 14, for example, in the method according Fig. 5 and / or at the surveillance facilities of Fig. 1 to 4 , Can be used.
  • the so-called "supply line resistance” is composed of the contact resistance of the electrical pull cable contacting and the resistance of the respective connecting line 10 to the voltage measuring device 21 or to the current source 20.
  • the ends of the pull cable 8 are contacted with the wires 11 of a connecting line 10 and electrically connected to a controllable constant current source 20.
  • a voltage meter 21 is connected with a very high internal resistance parallel to the pull cable 8.
  • this means that the voltage measurement contact is in each case on the current-carrying side of the current flow contact of the pull cable 8.
  • the voltage measuring device 21 is connected via wires 11 of a connecting line 10 with the voltage measurement contacts of the pull cable 8.
  • the connecting lines 10 may be the same line or two separate lines. The same applies to the two-sided connections to the contacts of the pull rope 8, i. the four-wire measuring circuit can be realized with only one, two or even four independent connection lines 10. In any case, four wires 11 per pull rope 8 are required.
  • the lead resistors R 12 and R 1 3 are very small compared to the internal resistance of the voltmeter 21 and can be neglected.
  • FIG. 7 Figure 12 shows a more detailed view of the current flow contact and voltage measurement contacting of a pull rope 8 in the four conductor measurement setup for determining the pull rope resistance R pull rope Fig. 6 ,
  • the traction cable 8 which is composed of a plurality of stranded strands, which in turn are formed of stranded wires, is contacted at its ends by contact elements 26, which form the current contact and the voltage contact. These contact elements 26 are part of the contacting device 5, more precisely the contacting devices 50, 50 ', and establish an electrical connection between the measuring system 4 and the traction cable 8 in an elevator belt 7.
  • the contact elements 26 penetrate through the jacket 31 of the elevator belt 7 in the pull cable 8 and provide by means of the contacting device 5, an electrical contact, that is. a non-cohesive electrical connection, between the pull cable 8 and the connecting line 10, forth.
  • controllable constant current source 20 and the voltage measuring device 21 of the measuring system 4 are, as in connection with Fig. 6 described electrically connected via leads 11 of one or more connecting line (s) 10 with the Strompound- or voltage measurement contacts, which are produced by the contact elements 26.
  • Figure 8 shows an exemplary embodiment of a contacting device 5, each with a contacting device 50 and 50 'for current flow and voltage measurement contacting at both ends of the elevator belt, respectively Fig. 2 ,
  • the elevator belt 7 to be monitored has more than two tension cables, two of which are shown here.
  • contacting devices 50 and 50 'for current flow through the tension cables 8 and voltage measurement are attached.
  • the respective contacts for current flow and voltage measurement can be arranged in a common contacting device 50, 50 'or in respectively separate subassemblies 500' and 500 ".
  • the dashed lines indicate that the contacting devices 50 and 50 'can be unified or spatially separated ,
  • the illustration (shown by dashed line) in each case two sub-devices 500 ', 500 "for current or voltage contacting serves the functional distinction of the contact elements 26, which on the one hand provide the StrommannAuthmaschine and on the other hand theors horrsAuthtechnik the tension cables 8 through the contacting device 5.
  • the contacting device 50 has a first set of Stromfluß.êten I 11 and I 21 and a first set ofmons horrshefttechniken U 11 and U 21 ; In each case one Stromfluß. réelle and aors horrsAuthtechnik suits per traction cable 8. Theors horrs. réelleen U 11 and U 21 are in this case on the current-carrying side of Stromfluß. réelleen I 11 and I 21 of the traction cables. 8
  • the contacting device 50 has a second set of Stromfluß. Anlagenen I 12 and I 22 and a second set ofistics horrsAuthêtmaschineen U 12 and U 22 .
  • Theors horrsAuthêtmaschineen U 12 and U 22 are in this case also on the current-carrying side of StrommannAuthmaschineen I 12 and I 22 of the traction cables. 8
  • the current flow contacts and the voltage measurement pads are each connected via wires 11 of one or more leads 10 to a measuring system 4, as in connection with FIG Fig. 4 is explained in more detail.
  • the current flow I runs along the tension cables 8 from the first contacting device 50 to the second contacting device 50 '.
  • the falling voltages in the current flow I which are proportional to the Glasseil resistors are tapped via the voltage measurement contacts U 11 and U 12 and U 21 and U 22 .
  • the dashed part of the traction cables 8 indicates the spatial extent of the traction cables 8 between the two contacting devices 50 and 50 ', which are arranged at the respective ends of the elevator belt 7.
  • the exemplary embodiment which is in Fig. 8 has measuring points, ie contact points, on each pull rope 8.
  • only one pull cable is electrically contacted, ie the current contacts I 21 and I 22 and the voltage contacts U 21 and U 22 fall away.
  • the measurement of the one pull rope 8 is then used representatively for the whole lift belt 7.
  • a contacting device 5 In another exemplary embodiment of a contacting device 5 according to Fig. 9
  • the contactor 50 for current flow and voltage measurement contacting is provided at only one end of the elevator belt 7.
  • the contacting device 50 and the contacting device 5 together.
  • the traction cables 8 At the other end of the elevator belt 7, the traction cables 8 in pairs on an electrical connection 9 and thus form a series circuit of two series-connected tension cables 8, respectively Fig. 3 ,
  • the contacting device 50 (provided here only at one end of the elevator belt 7) is shown as formed from two functionally different partial devices 500 'and 500 ", which together form a unit.
  • subdevice 500 has a set of current flow contacts I 11 and I 21
  • subdevice 500 has a set of voltage measurement pads U 11 and U 21.
  • Voltage measurement contacts U 11 and U 21 lie here on the current-carrying side of Stromflußcardtechniken I 11 and I 21 of the traction cables 8, as in connection with the description of Fig. 8 is explained.
  • the current flow contacts and the voltage measurement pads are each connected via leads 11 of one or more leads 10 to a measurement system 4, as in connection with FIG Fig. 4 is explained in more detail.
  • Fig. 10 shows a different view of the embodiment of Fig. 9 in which only one contacting subdevice 500 "is shown, namely that for voltage measurement contacting, as well as its connection to the voltage measuring device 21.
  • a contacting device 5 which comprises only one contacting device 50, is arranged.
  • the contacting device 50 and the contacting device 5 fall in the exemplary embodiment disclosed in US Pat Fig. 10 is shown, together.
  • the contacting device 50 has two contacting sub-devices 500 'and 500 "for current or voltage contacting of the tension cables 8.
  • the current flow I through the tension cables 8 is, as in connection with Fig. 4 described, ensured by a controllable constant current source 20 of a measuring system 4.
  • the power supply via the wires 11 of one or more connecting line (s) 10, which are connected via the contacting part device 500 "with the tension cables 8.
  • the voltage measurement contacts are here represented by the contact elements 26 of the contacting device 5.
  • Each pull rope 8 is associated with a contact element 26.
  • the voltage dropping in each case on two voltage measurement contactings electrically connected in pairs by the two tensioned cables 8 is read out via the wires 11 of one or more connection leads 10 from a tension measuring device 21 of the measuring system 4.
  • connection lines 10 for current supply and voltage measurement can be one and the same connection line 10, with sufficient number of cores, or separate connection lines 10.
  • the dashed areas of the traction cables 8 indicate the spatial extent of the traction cables 8 between the two ends of the elevator belt 7.
  • FIG Fig. 11 An embodiment of the contacting device 50 or 50 'with double-pin contact elements illustrated in the above figures is shown in FIG Fig. 11 shown.
  • the contacting subdevice 500 "of the contacting device 50 is connected to a connecting line 10, which is realized as a flat cable 100.
  • the connecting line 10 is locked in a plane parallel to the plane which is spanned by the elevator belt 7 and perpendicular to the elevator belt 7 in the contacting device 50.
  • the contact elements 26, which electrically connect the traction cables 8 of the elevator belt 7 to the cores 11 of the connecting cable 10, are designed as double arbors in a contact element holder 30.
  • one contact element 26 is arranged per partial device 500 "for voltage measurement contacting or one contact element 26 per partial device 500 'for the current flow contact in the contacting device 50.
  • the double mandrel contact elements 26 each have a partial mandrel 27 or 27 'in the direction of the elevator belt 7 and a partial mandrel 28 or 28' in the direction of the connecting line 10.
  • the partial mandrels 27 and 28 or 27 'and 28' are either made in one piece or at least electrically connected to each other.
  • the partial mandrels 27, 27 ' make contact with the tension cables 8 without stripping through the plastic jacket 31 of the elevator belt 7 and establish a physical contact between the tension cables 8 and the contact elements 26.
  • the mandrels 28, 28 'contact the wires 11 also stripping through the cable sheath of the connecting line 10 and make a physical contact between the wires 11 and the contact elements 26 ago.
  • the partial mandrels 27 and 28 lie in one plane and the partial mandrels 27 'and 28' lie in one plane.
  • the spacing of these two planes corresponds to a multiple of the spacing of the centers of the wires 11 of the connecting line 10. In the exemplary embodiment shown here, this spacing of the planes is exactly the wire spacing of the flat cable 100.
  • the distance between the center axes of the partial pins 27 and 27 ' is a multiple In the exemplary embodiment shown here, this distance of the partial mandrels 27 and 27 'is exactly the Buchseilabstand. This distance is determined by the passage 32 of the plastic jacket of the elevator belt 7 between the two tension cables 8.
  • the connecting line 10 is, as in connection with Fig. 4 described, connected to a measuring system 4.
  • the measuring system 4 causes the flow of current through the traction cables 8 and measures the voltage dropping on the traction cables 8 and determines therefrom the traction cable resistances.
  • FIG. 11 One too Fig. 11 alternative embodiment of the contacting device 50 or 50 'shown in the above figures is in Fig. 12 shown. In contrast to Fig. 11 has these individual spines 29 on. Only one contacting subdevice 500 'or 500 "is shown here. The individual mandrels 29 are arranged in a "matrix arrangement" with the following scheme: A row of thorns 29 contacts the second outermost passing traction cable 8 and from this traction cable, away from the connection line side of the contacting subdevice 500 'or 500 " 8, every other pull rope 8 to the middle of the elevator belt 7.
  • Another row of mandrels 29 makes contact, from the connection line facing side of the contacting part device 500 'or 500 ", the second outermost passing pull rope 8 and from this pull rope 8, every second traction cable 8 to the middle of the elevator belt 7.
  • Another row of thorns 29 contacts the remaining passing traction cables eighth
  • the contacting partial device 500 'or 500 "for an elevator belt 7 is connected to twelve tension cables 8 in a common plastic jacket 31 with a flat cable 100 having twelve wires 11 perpendicular thereto.
  • This contacting subdevice 500 ', 500 " has three rows of contact elements 26, which in this case are divided into groups of three by way of example Fig. 12 maintains orientation and counting from the lead-side facing away from the contacting subdevice 500 'and 500 ", respectively, then a series of contact elements 26 contacts the second, fourth and sixth traction cables 8.
  • a second row of two groups of contact elements 26 contacts the first, third, fifth, eighth, tenth and twelfth traction cables 8.
  • a third row of contact elements 26 contacts the seventh, ninth and eleventh traction cables 8.
  • the first traction cable 8 is electrically connected to the first wire 11 of the flat cable 100 by the contact elements 26 from left to right.
  • the second traction cable 8 is connected to the seventh wire 11, the third traction cable 8 is the third vein 11, the fourth traction rope 8 is the ninth vein 11, the fifth traction rope 8 is the fifth vein 11, the sixth traction rope 8 is the eleventh vein 11, the seventh traction rope 8 is the second vein 11, the eighth tow rope 8 is with the eighth strand 11, the ninth tension rope 8 is with the fourth strand 11, the tenth tension rope 8 is with the tenth strand 11, the eleventh tension rope 8 is with the sixth strand 11 and the twelfth tension rope 8 is connected to the twelfth wire 11.
  • This "matrix arrangement” is due to the size of the contact elements 26, which have a diameter of more than one Ceiseilabstand or more than one vein spacing.
  • the contacting device 5 has two parts, namely a bottom 35 and a lid 36.
  • the flat cable 100 ie the connecting line 10
  • the flat cable 100 is locked in the contacting subdevice 500 ', 500 ".
  • Fig. 13 shows the section through the contacting subdevice 500 ', 500 "from FIG. 12 along the line AA.
  • the jacket 31 On the upper side of the elevator belt 7, ie on the side facing the connecting line 10, the jacket 31 is thin.
  • FIG. 14 A 20x enlarged section of the X marked circular area in Fig. 13 is in Fig. 14 shown.
  • the contact elements 26 in the contact element holder 30 are formed in this exemplary embodiment of a contacting subdevice 500 ', 500 "as individual mandrels 29, which in Fig. 14 be referred to as pins.
  • the individual mandrels 29 By the application of force from the clamping screws 33, the individual mandrels 29 have completely penetrated the wires 11 of the connection line 10. They have also contacted the tension cables 8 of the elevator belt 7 stripping-free by the jacket 31.
  • the contact elements 26, i. the individual mandrels 29, establish an electrical connection between the wires 11 of the connecting cable 10 and the tension cables 8 of the elevator belt 7.
  • the PU layer of the jacket 31 is significantly thicker on the side facing away from the mandrel: On the one hand, it gives the elevator belt 7 good rolling properties, and on the other side it has a thin layer which has to be penetrated for contacting.
  • Fig. 15 shows the section through the contacting subdevice 500 '. 500 "off FIG. 12 along the line BB.
  • the jacket 31 of the elevator belt 7 has on the bottom 35 side facing a tread with comb structure.
  • Each hump of this comb has the width of two tension cables 8 and serves the traction of the elevator belt 7 when winding and unwinding on the support and drive rollers 14,16 and 18 of the conveyor 2, see Figures 2 and 3 ,
  • On the cover 36 side facing the jacket 31 of the elevator belt 7 is as thin as possible to allow easy contacting of the tension cables 8 through the individual mandrels 29, which protrude from the contact holders 30.
  • the individual spikes 29 pierce the flat cable 100 at the points at which the wires 11 run and thus contact the wires 11 of the connecting line 10 and the traction cables 8 of the elevator belt 7 simultaneously and without insulation.
EP15000013.1A 2015-01-07 2015-01-07 Surveillance de courroie d'ascenseur Active EP3042874B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15000013.1A EP3042874B1 (fr) 2015-01-07 2015-01-07 Surveillance de courroie d'ascenseur

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EP15000013.1A EP3042874B1 (fr) 2015-01-07 2015-01-07 Surveillance de courroie d'ascenseur

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EP3042874A1 true EP3042874A1 (fr) 2016-07-13
EP3042874B1 EP3042874B1 (fr) 2018-03-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113401752A (zh) * 2020-03-16 2021-09-17 奥的斯电梯公司 用于电梯曳引带的表面绝缘层的状态检测方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000058706A2 (fr) 1999-03-29 2000-10-05 Otis Elevator Company Procede et appareil de detection de la deterioration d'un cable d'elevateur avec de l'energie electrique ou magnetique
WO2005094248A2 (fr) * 2004-03-16 2005-10-13 Otis Elevator Company Procedes d'application de signaux electriques pour surveiller l'etat d'un element de support de charge d'un dispositif de levage
WO2005094249A2 (fr) 2004-03-16 2005-10-13 Otis Elevator Company Dispositif de connexion electrique utilise avec des elements de support de charge d'un dispositif de levage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000058706A2 (fr) 1999-03-29 2000-10-05 Otis Elevator Company Procede et appareil de detection de la deterioration d'un cable d'elevateur avec de l'energie electrique ou magnetique
WO2005094248A2 (fr) * 2004-03-16 2005-10-13 Otis Elevator Company Procedes d'application de signaux electriques pour surveiller l'etat d'un element de support de charge d'un dispositif de levage
WO2005094249A2 (fr) 2004-03-16 2005-10-13 Otis Elevator Company Dispositif de connexion electrique utilise avec des elements de support de charge d'un dispositif de levage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113401752A (zh) * 2020-03-16 2021-09-17 奥的斯电梯公司 用于电梯曳引带的表面绝缘层的状态检测方法和装置

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