EP1832541B1 - Check lever with bearing - Google Patents

Abstract

A portable test-lever (45) has a load-arm and a force-arm (49) and a variably fixable support (46). An angle-point is arranged between the load-arm and the force-arm (49). The test-lever (45) is supported via the support (46) when a force (53) is applied to the lever and to at least one tested elevator cable for verifying an operating capability and/or a cable movement of at least one elevator cable (51). The variable support (46) can be fixed with variable spacing from the fixed-point (52) on the elevator. An independent claim is included for a method for installing a portable test-lever and for establishing the operating capability.

Description

The invention relates to a portable test lever with a load and a power arm, a variably fixable support and a pivot point which is arranged between the load and power arm, wherein the test lever is supported on the support when a force is applied to the test lever and at least an elevator rope to be checked is transmitted for checking a driving ability and / or a cable movement of at least the elevator cable and / or an acceleration capacity of an elevator.

From the EP 0 391 174 B2 , of the EP 0 573 432 B1 and the EP U 390 972 B1 Test devices for elevator systems are known in which by means of a force on a cable to the test device is closed to an operating condition.

In addition, the describes DE 103 23 175 A1 a test lever with a load and a power arm for checking a driving ability and / or an acceleration capacity of an elevator with an integrated Meßaufnahme, a force arm spaced and arranged on the load arm receptacle, in particular at least one cable receptacle and a support.

It is an object of the present invention to provide an apparatus and a method in which setting up a test apparatus is made possible or at least simplified.

The object is achieved by a portable, especially manually operable test lever with a load and a power arm, a variably fixable support and a pivot point; is arranged between the load and power arm, wherein the test lever is supported on the support when a force imparted to the test lever and at least one to be tested elevator rope to check a driving ability and / or a cable movement of at least the elevator cable and / or an acceleration capacity of Elevator is transferred, wherein the variably fixable support at a variable distance from a fixed point, which is located on an elevator system, can be fastened. The fastening device has a force-like device for the frictional attachment of a Zugübertragungselements at a fixed point on a traction sheave. The fixation is by means of fasteners, preferably screws or punches with thread feasible. The fasteners can be tightened sufficiently tight in one embodiment, without the aid of tools to apply a required force for the connection. This is for example in one Achieved by the attachment of preferably at least one lever or by means of a circumference of a fastener head enlarging wheel or equivalent.

An elevator installation should be defined here as an elevator including elevator car, counterweight, elevator ropes, traction sheave, drive and fastening devices for said parts with each other and with the surrounding buildings. In particular, the fixed point can be arranged on specifically one of these areas of the elevator installation.

Advantage of a first embodiment is that the existing at the site of the test objects, preferably elevator parts, can be used to serve as a fixed point for the support. The variable fixability of the support allows a fast and secure fixation even under different environmental conditions.

In a second embodiment, at least one, preferably exactly one elevator rope can be fastened to one end of the load arm. The load arm is an arm of the test lever. A force introduced into the power arm of the test lever is implied in the elevator rope via the load arm. By arranging the pivot between the load and load arms, the force implied in the elevator rope is opposed to the force acting on the force arm.

In a further embodiment, the support is fixed by means of at least one fastening means in the hinge point of the portable test lever. The fastening element can be embodied, for example, as a screw or according to another embodiment as a bolt or a mandrel, preferably with a thread. Slipping of the lever in the support is thus prevented. The support can be fastened in another embodiment by means of a positive connection to the hinge point of the portable test lever. This allows introduction of a force defined by the lever ratio in the elevator rope.

The support is fastened according to a variant via a train transmission element to the fixed point. The tension transmission element may, for example, comprise a cable. In a further embodiment, the tension transmission element has a band, which preferably consists of textile material. In a particular embodiment, the train transmission element has a chain. Also, the Zugübertragungselement according to a development include a rod. However, then an appropriate precaution is to be taken so that the tension transmission element can allow a variable distance to the fixed point. This is preferably done by means of a design as a telescopic rod.

In one embodiment, the support is attached to the tension transmission element frictionally, preferably by friction. By a non-positive connection is meant a connection in which two elements are connected together such that a first element, or parts thereof, applies a force to a second element. By this force, the friction between the elements, or parts thereof, is so great that a relative movement of the elements is prevented from each other. Such a connection is made possible for example by a screw or screw connection. By a frictional connection is meant a connection in which the surfaces of two elements are in contact with each other such that a relative movement between the elements is prevented due to friction occurring between the contact surfaces. This is the case, for example, with a clamp buckle, but a node also fulfills this feature. Furthermore, in a development, the tension transmission element can be fastened to the fixed point with a frictional or positive connection. The positive connection is, for example, introduced into the train transmission element loop or eyelet into which a corresponding part of the fixed point engages such that a relative movement of Zugübertragungselement is prevented from the fixed point. Likewise, the positive connection can be achieved by means of a ring and / or a hook which is attached to the fixed point. In order to achieve a connection of the tension transmission element at the fixed point, another embodiment has a fastening device on the tension transmission element.

In a particularly preferred embodiment of the test lever, the support and / or the fastening device has a Zugübertragungselement recording. This can be configured, for example, with at least two slots for a buckle-like fastening of the Zugübertragungselementes. Another embodiment provides at least two recesses for a rope clamp-like attachment. It is also a variant with a recess possible, with a chain can be attached, for example by means of a snap hook. The Zugübertragungselement recording allows a quick and easy attachment of the Zugübertragungselementes to a fixed point and a quick and easy variation of the distance between the fixing point and recording.

According to one embodiment, the Zugübertragungselement recording is angled on the fastening device. A plane in which an angle lies is defined by a plane of the fastening device. Preferably, the plane of the fastening device is to be used, which has a largest intersection with the fastening device. The angle plane is perpendicular to this and perpendicular to a side surface of the fastening device. The angle turns out of the plane of the fastening device. An angle may for example be between 10 ° and 90 °, preferably between 20 ° and 55 °. In a specific embodiment, an angle of 30 ° or 45 ° is provided between the Zugübertragungselement- receiving and the plane of the fastening device. Tolerances of about 10% are possible, with tolerances of less than 10% being preferred. With an angle between Zugübertragungselement recording and fastening device is a distance of the Zugübertragungselementes from the fixed point, such as a traction sheave to reach. In a further embodiment, the angle is changeable. In addition, for example, the receptacle may have an angled Zugübertragungselement recording, analogous to Zugübertragungselement recording of the fastening device and their versions.

In order to prevent twisting of the fastening device, the force-like device may have at least two fastening elements. The fastening elements are then arranged, for example, on different longitudinal axes in order to counteract an occurring moment. For example, a force on the traction transfer member receiver that generates a first moment will generate a reaction force at the second attachment point that generates a second moment. Since the two moments are opposite, a rotation of the fastening device is prevented.

In a further embodiment, the test lever is coupled to a rope movement indicator, the attachment device preferably has the rope movement indicator. This can, for example, record and / or output data that can be used, for example, for the evaluation of the measurement. The data can be obtained from a measurement performed by the lateral motion indicator. Preferably, the movement and / or acceleration of the rope can be measured. The data can be processed further. For this purpose, the test lever itself or a program associated with this evaluation corresponding programs have deposited.

In a further variant, the fastening device has an indicator opening. The indicator opening allows, for example, the visual inspection of a cable movement. Furthermore, an automatic check can take place, in particular the indicator opening can have the cable movement indicator for this purpose.

In a preferred embodiment, the variably fixable support has a plate. The plate may be provided in one embodiment with a recess into which the test lever can be inserted and fixed. In addition, according to a further development, in the plate a Zugübertragungselement recording are integrated.

In a further preferred variant, the tension transmission element comprises at least one elevator rope which is not to be tested and which is arranged adjacent to the test elevator rope. For example, in a further embodiment, the support can be fastened by means of a clamping connection on the tension transmission element or on the elevator rope which is not to be tested. The required clamping force can be applied by fastening elements, preferably screws. In a further embodiment, the fasteners are quick release, which can be fixed without tools such that they apply the required clamping force. According to a further variant, the tension transmission element can be pressed on one, two or more clamping plates on a stepped abutment. Clamping plates in this case are plates which transmit the force applied by the fastening elements to one or more elevator cables which are not to be tested. The stepped abutment is for example designed so that the elevator cables to be clamped are pressed over a step in order to tilt them. According to an embodiment, it is provided for the elevator rope to be tested to arrange a preferably variable recess in the step in order to ensure a largely friction-free movement of the elevator cable to be tested.

• Befestigen eines Auflagers in einem Angelpunkt des Prüfhebels, so daß das Auflager zwischen einem Last- und einem Kraftarm liegt;
• Befestigen des Auflagers mittels eines Fixierungselements, vorzugsweise mit einer Befestigungsvorrichtung, an einem Fixpunkt oberhalb des Angelpunktes des Prüfhebels, vorzugsweise an einer Treibscheibe;
• Befestigen des Lastarmes des Prüfhebels an einem zu prüfenden Aufzugsseil;
• Einbringen einer nach unten gerichteten Kraft in den Kraftarm des Prüfhebels, wobei eine zweite Kraft in das zu prüfende Seil eingeleitet wird, die in entgegengesetzte Richtung zu der in den Kraftarm eingeleiteten Kraft wirkt;
• Aufnehmen mindestens eines, einen Zustand des Aufzugs charakterisierenden Meßparameters;
• Auswertung des Meßparameters bezüglich Treibfähigkeit, Seilbewegung und/oder Beschleunigungsvermögens des Aufzuges.

According to a further aspect of the invention, a method for attaching a portable test lever and for determining the driving ability, a cable movement and / or the acceleration capacity of an elevator is proposed with the following steps, which can be varied in the following order:

• Securing a support to a pivot point of the test lever so that the support is between a load and a power arm;
• Fixing the support by means of a fixing element, preferably with a fastening device, at a fixed point above the hinge point of the test lever, preferably on a traction sheave;
• Attaching the load arm of the test lever to an elevator rope to be tested;
• Inserting a downward force in the force arm of the test lever, wherein a second force is introduced into the rope to be tested, which acts in the opposite direction to the force introduced into the power arm;
• Receiving at least one measurement parameter characterizing a state of the elevator;
• Evaluation of the measuring parameter with regard to driving ability, rope movement and / or acceleration capacity of the elevator.

The fixed point can be granted according to a development above the pivot point of the test lever. A force introduced into the power arm of the test lever can be directed downwards, the second force introduced into the cable then being directed upwards.

According to a variant of the fixed point can be selected below the pivot point of the test lever. A force introduced into the power arm of the test lever may be directed upward, with the second force introduced into the cable directed downwardly therein.

At least one measurement parameter, which can be used, for example, for the evaluation of, for example, the drive capability, the cable movement and / or the acceleration capability, is recorded electronically in a design, in particular by means of a cable movement indicator. According to a variant, the measuring parameter is transmitted to a receiver. In particular, this can be done by means of electromagnetic radiation transmission.

In one embodiment, at least one measurement parameter and / or a result is output from the test lever. An output can be audible and / or visual. In a development, the output can also be haptic, for example by means of a vibrator.

According to a variant, the evaluation of the measurement parameter can be carried out electronically. In one embodiment, the evaluation is carried out in the test lever. For this purpose, for example, a microprocessor, signal processor or a microcontroller can be used, in particular on the test lever and / or on a portable evaluation unit.

According to one embodiment, a quantitative and / or qualitative display of a measurement parameter and / or an evaluation takes place.

Fig. 1:

eine Ausgestaltung eines Prüfhebels,

Fig. 2:

eine Ausgestaltung eines Auflagers für einen Prüfhebel,

Fig. 3:

ein Anwendungsfall des Auflagers aus Fig. 2 mit dem Prüfhebel,

Fig. 4:

eine an einer Treibscheibe befestigte Befestigungsvorrichtung,

Fig. 5:

eine Explosionsskizze für ein Auflager, welches an nicht zu überprüfenden Aufzugsseilen befestigt wird (nicht Teil der Erfindung)

Fig. 6:

eine Ausführung einer Zugübertragungselement-Aufnahme,

Fig. 7:

eine Gestaltung einer Festpunktanordnung eines Prüfhebels (nicht Teil der Erfindung),

Fig. 8:

eine weitere Gestaltung einer Festpunktanordnung eines Prüfhebels (nicht Teil der Erfindung), und

Fig. 9:

eine Gestaltung einer Festpunktanordnung mittels einer Befestigungsvorrichtung an einer Treibscheibe.

The above and other advantages will be explained in more detail with reference to the following figures. However, the features shown in the figures are not limited to the individual embodiments. Rather, the features specified in the description of the figures and drawings can be linked to those of the above description as well as to each other to further embodiments with each other. They show in detail:

Fig. 1:

an embodiment of a test lever,

Fig. 2:

an embodiment of a support for a test lever,

3:

an application of the support Fig. 2 with the test lever,

4:

a fastening device attached to a traction sheave,

Fig. 5:

an exploded view of a support which is attached to non-test elevator cables (not part of the invention)

Fig. 6:

an embodiment of a Zugübertragungselement recording,

Fig. 7:

a design of a fixed point arrangement of a test lever (not part of the invention),

Fig. 8:

a further design of a fixed point arrangement of a test lever (not part of the invention), and

Fig. 9:

a design of a fixed point arrangement by means of a fastening device to a traction sheave.

FIG. 1 shows a first embodiment of a first test lever 1 with a power arm 2 and a load arm 3. The test lever also has a movable or rigid cable receptacle 4, with which an elevator rope fixed, in particular can be clamped. Furthermore, the test lever 1 has a Meßaufnahmevorrichtung 5 with a signal processing electronics and a signal output 6, which preferably has light-emitting diodes.

FIG. 2 shows an embodiment of a support 7, which can be positioned between the power arm 2 and load arm 1. This support 7 includes, inter alia, a plate 8 which has a recess which forms a receptacle 9 for the test lever 1.

The test lever 1 is fixed in the receptacle by means of a screw 10. Furthermore, there are two slots 11 in the plate, which form a receptacle for a train transmission element. Through the slots 11, for example, a tape is pulled, so that there is a buckle-like attachment.

FIG. 3 shows an application in which a second test lever 12 is attached to an elevator rope 13. As a rope recording act two plates, the elevator rope 13 between a first plate 14 and a second plate 15 is clamped. The clamping force is applied by screws 16 in this embodiment. A support 17 is mounted in the pivot point 18 of the test lever 12. The support 17 is fixed by means of a tension transmission element, in particular by means of a belt 19. For a fastening of the band 19 on the support 17, a buckle-like Zugübertragungselement recording 20 is provided on the support 17.

FIG. 4 shows a sketchy representation of a fastening device 21 which is attached to a traction sheave 22. The traction sheave 22 is only partially shown. The fastening device 21 is clamped by means of a force-like device 23 to the traction sheave 22. In this embodiment, the force-like device 23 consists of at least one clamp arm 24 and a screwable punch 25. In order to simplify handling and to avoid a tool when fastened, the screwable punch 25 has a lever 26. On the fastening device, a band 27 is attached. Again, a buckle-like Zugübertragungselement recording 28 is used. This is angled in this embodiment of the remaining fastening device 21 in order to avoid contact of the Zugübertragungselementes, in this case the band 27, with an elevator rope or the traction sheave 22.

FIG. 5 shows an exploded view of a support 29 (not part of the invention) of a special type, which can be attached to at least one uncontrolled elevator cable 30. An abutment 31 is connected to a step 32 and between the stepped abutment 33 and a first clamping plate 34 and a second clamping plate 35, the elevator cable 30 is clamped. The clamping forces are applied by means of screws 36, 37. The screws 36 also fasten the step 32 on the abutment 31. Furthermore, the support 29 Prüfhebelaufnahmen 37, 38, where a test lever can be attached to a pivot point. In the embodiment shown here, the Prüfhebelaufnahmen are secured by means of screws 39, 40 on the bearing 29. Another embodiment provides a material connection, which either by welding or by a production of the clamping plate 34 and the Prüfhebelaufnahme 35 and the abutment 31 and the Prüfhebelaufnahme 38 is achieved from a workpiece. The receptacle 29 is attached to the elevator rope 30 so that a lift rope to be checked is freely movable, that is, that the elevator rope to be checked is not jammed between the clamping plates 34, 35 and the step-shaped abutment 33. This can be realized in one embodiment by a recess in the stage 32. In a further embodiment, the step 32 is in two parts and between the parts of the stage is to be checked elevator rope. Another embodiment provides for a one-piece step 32, adjacent to which runs the elevator rope to be checked.

FIG. 6 shows a Zugübertragungselement-receptacle 41 for a chain 42. In the embodiment shown, the chain 42 is attached by means of a snap hook 43 on Zugzugungselement. A length change is achieved by attaching the snap hook to another link 44 of the chain 42.

FIG. 7 shows a possible use of a test lever 45 (not part of the invention), wherein the test lever 45 is fixed by means of a support 46 at a fixed point 47. The fixed point 47 is in this example below support 46. A force 48 is therefore introduced into the power arm 49 of the test lever 45 directed upwards. A second force 50 consequently acts downward in an elevator rope 51 to which the test lever 45 is attached. The fixed point 47 may for example be part of an elevator installation.

FIG. 8 shows a further possible use of the test lever 45 (not part of the invention), in which the support 46 is fixed to a fixed point 52. A force 53 is placed in the power arm 49 directed downwards. This results in an upward force 54, which is introduced into the elevator cable 51.

FIG. 9 shows a particularly preferred use of the test lever according to the invention, in which the support 46 is attached via a pull transmission element 55 by means of a fastening element 56 to a traction sheave 57. Again, a force 58 is introduced into the power arm 49 from above and a resultant force 59 is introduced into the elevator cable 51.

Claims (19)

1. A portable check lever (1; 12; 45) having a work arm (3) and a power arm (2; 49), a variably fixable support (7; 17; 46) and a fulcrum (18) arranged between the work arm (3) and the power arm (2; 49), wherein at least one lift cable (13; 51) to be checked can be secured to one end of the work arm (3) and wherein the check lever (1; 12; 45) is supported via the support (7; 17; 46) when a force (48; 53; 58) is exerted on the check lever (1; 12; 45) and transmitted onto the lift cable (19; 51) to check driving ability and/or cable motion of at least the lift cable (13; 51) and/or acceleration capacity of a lift, wherein the variably fixable support (7; 17; 46) can be secured at an alterable distance from a fixed point (47; 52) located an a lift installation, characterised in that a securing device (21) has a clamp-like device (23) for securing of a traction-transmitting element to the fixed point (47; 52) on a traction sheave (22; 57) in a non-positive locking manner, wherein fixing can be carried out by means of securing elements, preferably screws (25).
2. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that a securing element (10) fixes the support (7; 17; 46) at the fulcrum (16) of the portable check lever (1; 12; 45).
3. A portable check lever (1; 12; 45) according to any one of the previous claims, characterised in that the support (7; 17; 46) can be secured to the fixed point (47; 52) via a traction-transmitting element (19; 27).
4. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that the check lever (1; 12; 45) has a securing device (21) to connect the traction-transmitting element (19; 27) to the fixed paint (47; 52).
5. A portable check lever (1, 12; 45) according to any one of the preceding claims, characterised in that the support (7; 17; 46) and/or the securing device (21) connecting the traction-transmitting element (99; 27) to the fixed point (47; 52) has a traction-transmitting-element receiver (28; 41) which has at least two slots (11) for a buckle-like securing of a band, preferably of textile material, or at least two cut-outs for a cable-clamp-like securing of a cable, or at least one cut-out for securing a chain, for example by means of a snap hook (43).
6. A portable check lever (1; 12; 45) according to claim 8, characterised in that the traction-transmitting-element receiver (28; 41) of the securing device (21) is angled, preferably between 10° and 90°.
7. A portable check lever (1; 12; 45) according to claim 10, characterised in that the clamp-like device (23) has at least two securing elements, wherein the securing elements are arranged in such a manner that these have different longitudinal axes in order to counteract a moment.
8. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that it is coupled to a cable-motion indicator or has the cable-motion indicator.
9. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that the securing device (21) has an indicator opening (60).
10. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that the indicator opening (60) has at least the cable-motion indicator.
11. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that the variably fixable support (7; 17; 46) is a plate (8) having a cut-out (9) to receive the check lever (1; 12; 45) and/or a traction-transmitting-element receiver.
12. A portable check lever (1; 12; 45) according to any one of the preceding claims, characterised in that the traction-transmitting element (19; 27) comprises at least one lift cable (30) which is not to be checked and which is adjacent to the lift cable (13) to be checked.
13. A portable check lever (1; 12; 45) according to claim 12, characterised in that a clamping connection to secure the support to the traction-transmitting element is provided, by means of which a clamping force can be applied by means of securing elements, preferably screws (36, 37), and the traction-transmitting element can be pressed onto a step-shaped abutment (33) via at least two clamping plates (34, 35).
14. A method of attaching a portable check lever (1; 12; 45) according to claim 1 and of ascertaining the driving ability, the cable motion and/or the acceleration capacity of a lift, having the following steps:

    - securing of a support (7; 17; 46) at a fulcrum (18) of the check lever (1; 12; 45), so that the support (7; 17; 46) lies between a work arm (3) and a power arm (2; 49);

    - securing of the support (7; 17; 46) via a fixing element (19; 27), preferably with a securing device (21), to a fixed point (47; 52) above the fulcrum (18) of the check lever (1; 12; 45), on a traction sheave (22);

    - securing of the work arm (3) of the check lever (1; 12; 45) to a lift cable (13; 51) to be checked;

    - introduction of a downwardly-directed force (53; 58) into the power arm (2; 49) of the check lever (1; 12; 45), wherein a force (50; 54; 59), acting in an opposite direction to the force (48; 53; 58) introduced into the power arm (2; 49), is introduced into the cable (13; 51) to be checked;

    - receiving of at least one measured parameter characterising a state of the lift;

    - evaluation of the measured parameter with regard to driving ability, cable motion and/or acceleration capacity of the lift.
15. A method according to claim 14, characterised in that at least one measured parameter is received by means of a cable-motion indicator.
16. A method according to any one of claims 13 to 15, characterised in that at least one measured parameter is received electronically.
17. A method according to any one of claims 13 to 16, characterised in that at least one measured parameter is emitted visually and/or acoustically by the check lever (1; 12; 45).
18. A method according to any one of claims 13 to 17, characterised in that an electronic evaluation of the at least one measured parameter and/or a qualitative and/or quantitative notification of at least one measured parameter takes place.
19. A method according to claim 18, characterised in that the evaluation takes place in the check lever (1; 12; 45).

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