WO2011003790A1

WO2011003790A1 - Contacting device

Info

Publication number: WO2011003790A1
Application number: PCT/EP2010/059310
Authority: WO
Inventors: Hans Kocher
Original assignee: Inventio Ag
Priority date: 2009-07-06
Filing date: 2010-06-30
Publication date: 2011-01-13
Also published as: EP2451735A1; EP2451735B1

Abstract

The invention relates to a contacting device for electrically contacting tie beams of a suspension in an elevator system, the contacting device comprising: a housing (3, 4) having a recess in which the suspension (1) can be received so that the housing (3, 4) substantially encloses the suspension (1); at least one contact element (6) disposed in the recess of the housing (3, 4); at least one lift element (7) supported by the housing (3, 4); wherein the at least one lift element (7) can be guided through the suspension such that at least one tie beam (11) can be lifted out of an enclosure (12) of the suspension (1) and thereby can be brought into electrical contact with the contact element (6).

Description

contacting

The invention relates to a contacting device for monitoring a suspension in one

Lift system.

In some conveyors, z. As elevator systems, escalators, moving walks, hoists or cranes, belt-shaped support means are used. These support means generally comprise a plurality of steel wires existing tensile carriers, which absorb the tensile forces to be absorbed by the support means. The tension members are generally surrounded by a plastic sheath. The jacket protects the tension members, for example against mechanical wear, because the support means are often guided over deflection points, in particular rollers. In addition, the jacket improves the traction of the suspension element on deflection or drive rollers, and fixed the arrangement of the tension members with each other. The support means are within a conveyor a safety-critical component, since their failure or breakage can lead to a fall of the material to be conveyed. This can lead to considerable property damage and personal injury. For this reason, test units are used in conveyors, which in particular check the mechanical condition of the tension members. Damage to the forces absorbing tension members should be able to be detected early, so that the support means can be replaced in case of damage to prevent failure of the conveyor.

The tension members are surrounded by the electrically insulating jacket made of plastic. To carry out an examination of the Condition of the tension members contacting of a contact element with the tension member is required in some methods. In a known method, a current is passed with the aid of the contact element through the tension members, which serves as a test current to determine the state of the tension members. In addition, other test methods that do not work with electricity, such. B. ultrasound, into consideration. DE 39 34 654 Al shows a generic type of suspension. The ends of the tension members are connected in pairs conductive with a bridge part, so that the tension members of the support means are electrically connected in series. The tensile carriers of the suspension element are connected via an ammeter to a voltage source, so that by means of the test current, which is passed through all the tension members in series due to the electrical circuit, the state of the tension members can be assessed. DE 2 330 038 shows a system for contacting a flat cable. In the illustrated flat cable several strands are arranged side by side within a plane and surrounded by a jacket. For electrical contacting of the strands, the flat cable is clamped by an upper and a lower clamping piece. Recesses are arranged on the lower clamping piece, can be performed by trained on a contact carrier lancing teeth. The lancing teeth pierce through the sheath of the flat cable and thus come into contact with the strands. The contacting of the strands using the lancing teeth is thus perpendicular to a longitudinal axis of the strands. Disadvantageously, it is necessary in this contacting that the lancing tines the coat of Punched through. However, the puncture of the shell by the lancing teeth can have the consequence that the lancing teeth deviate from the intended lancing direction when piercing the shell and thereby no contact with the strand can be produced. The lancing prongs may possibly also contact other unwanted strands or even no strands when the mantle is penetrated. WO 2005/094249 A2 and WO 2006/127059 A2 show a system for contacting a suspension element, in which the contact elements perpendicular to a longitudinal axis of the tension members first pierce the jacket of the suspension element and then penetrate into the tension members. Disadvantageously, the contact elements can miss the tension members due to the required piercing process through the jacket.

An object of the present invention is to provide a contacting device for contacting a support means available, in which the

Tensile carriers of the support belt can be reliably and accurately contacted by a contact element in order to determine a state of the tension members can. The contacting device should be easy to use and reliable and have low production costs.

To solve this problem is a

Contacting device proposed for electrical contacting of tension members of a suspension in an elevator system. The contacting device comprises a housing with a recess in which a portion of the Supporting means is receivable, so that the housing this

Section of the support means substantially encloses. The contacting device comprises at least one

Contact element, which is arranged in the recess of the housing. The contacting device comprises at least one lifting element, which is supported by the housing. The at least one lifting element can be guided by the support means in such a way that at least one tension member can be lifted out of a sheathing of the suspension element and thereby be brought into electrical contact with the contact element.

In addition, an elevator system with a cabin and a counterweight is proposed, the cabin and the

Counterweight by means of suspension, which by a

Drive are drivable, are movable, and wherein a contacting device as described above on

Supporting means is arranged. Furthermore, a method for electrical

Contacting of tension members proposed in a suspension of an elevator system. The method comprises arranging a housing on the suspension element so that a portion of the suspension element is substantially enclosed by the housing. The method comprises lifting at least one tension member from its original position by means of at least one lifting element, which is supported by the housing, so that an electrical contact between the at least one tension member and a contact element which is arranged in the housing, is produced. Details and advantages of the invention will be described below with reference to embodiments and with reference to the schematic drawings. 1 shows an exemplary embodiment of a

Elevator with a

contacting device;

Fig. 2 shows an exemplary embodiment of a

Contacting device arranged on a

Supporting means;

Fig. 3a is a sectional view of a

exemplary embodiment of a

Contacting device arranged on a

Supporting means;

Fig. 3b is a spatial representation of an exemplary

Embodiment of a cut

contacting device;

Fig. 3c is a sectional view of a

exemplary embodiment of a

contacting device;

4 shows an exemplary embodiment of a

Contacting device arranged on a

Supporting means; and Fig. 5 is a sectional view of a

exemplary embodiment of a

Contacting device arranged on a support means. FIG. 1 shows two contacting devices 2 for contacting a suspension element 1 in an elevator installation 40. The schematic and exemplary elevator installation 40 includes at least one elevator car 41, a

Counterweight 42 and a suspension means 1 and a

Traction sheave 43 with associated drive motor 44. The traction sheave 43 drives the support means 1 and thus moves the elevator car 41 and the counterweight 42 gegengleich. The drive motor 44 is controlled by an elevator control 45. The cabin 41 is designed to accommodate people

and / or goods and between floors of a

Transport building. Cabin 41 and counterweight 42 are guided along guides. In the example, the cabin 41 and the counterweight 42 are each suspended on support rollers 46. The support means 1 is fastened to a first support means fastening device 47, and then first guided around the support roller 46 of the counterweight. Then the suspension element 1 is placed over the traction sheave 43, guided by the support roller 46 of the cabin 41, and finally by a second

Tragmittelbefestigungsvorrichtung 47 connected to a fixed point. This means that the suspension element 1 runs with a higher speed via the drive 43, 44 in accordance with a transfer factor. In the example, the wrap factor is 2: 1.

The suspension element 1 is in this case by means of a first

Supporting means fastening 47 fixed in the building. It is further on a support roller 46 of the cabin 41 for

Traction sheave 43 out and running from there to

Counterweight 42 where again by means of a counterweight-side support roller 46 deflected and guided to a second support means attachment 47. The

Tragmittelbefestigungen 47 introduce tensile forces of the suspension element 1 in the building.

A loose end 1.1 of the support means 1 is connected to the

Contacting device 2 for temporary or permanent contacting of the support means 1 provided. In the example shown is at both ends of the support means 1 a

arranged such contacting device 2. The

Tragmittelenden 1.1 are no longer burdened by the tensile force in the suspension element 1, since this tensile force is already passed through the support means fasteners 47 into the building.

The elevator installation 40 shown is exemplary. Other cap factors and arrangements are possible. The

Contacting device 2 for contacting the

Supporting means 1 is then arranged according to the placement of the support means fasteners 47.

FIG. 2 shows an exemplary contacting device 2, which is arranged on a suspension element 1. The

Contacting device 2 is arranged at or near one end 1.1 of the suspension element 1.

The contacting device 2 shown consists in one embodiment of a first housing part 3 and a second housing part 4, which are held together by housing fasteners 10. Due to the two-piece arrangement of the contacting device 2, the assembly of the contacting device 2 is simplified, in particular when the contacting device 2 on is mounted away from one end 1.1 of the support means 1.

In the illustrated embodiment, lifting elements 7

formed, which are supported by the first housing part 3. The lifting elements 7 are arranged in a first row 8 and in a second row 9. This stands for each

Lifting element 7 more space available, so

For example, lifting elements with larger heads can be used.

Figure 3a shows a section along the axis Y-Y of the contacting device 2 and the support means 1 of FIG

2. In the figure 3b the same contacting device 2 is shown, but without lifting elements 7 and without support means

1 and in a spatial representation. FIG. 3c shows the contacting device 2 of FIG. 3b, but in a two-dimensional representation and with non-inserted lifting elements 7.

The housing 3, 4 of the contacting device 2 is preferably made of a rigid material such as

Plastic, with metal reinforced plastic, or metal. Because the lifting elements 7, which exert large forces on the support means 1, are supported by the housing 3, 4, the housing

3, 4 preferably designed robust.

The first housing part 3 and the second housing part 4 are preferably formed such that therebetween a

Recess 14 is formed, as shown in Figure 3c. This recess 14 is dimensioned such that the support means 1 takes place in it and is received at its upper edge flush from the first housing part 3. The second Housing part 4 has in the illustrated embodiment projections 5, which support the support means 1 and hold in its intended position in the recess 14. On one side of the recess 14 recesses 19 and projections 5 are formed. The number of depressions 19 preferably corresponds to the number of lifting elements 7. FIGS. 3 a to 3 c show a contacting device 2 for a suspension element 1 with twelve tension members 11.

Accordingly, the second housing part 4 at a height of the first row 8 (see Figure 2) six recesses 19, and offset to another six wells at a height of the second row 9 (not shown). Preferably, a projection 5 is arranged in each case between two recesses 19. As shown in Figure 3b, the projections 5, for example, a trapezoidal

Cross-section and a support surface 18 for the support means 1 on. The support surface 18 serves to support the

Supporting means 1, which by the lifting elements 7 against the

Depressions 19 is pressed. The support surfaces 18 hold the support means 1 in its intended position in the contacting device 2, while the lifting elements 7 lift individual tension members 11 out of the jacket 12 of the suspension element and into the recesses 19.

In the recesses 19, a contact element 6 is arranged in each case. In this case, the contact elements 6 and

Recesses 19 preferably dimensioned such that a tension member 11 is pressed flush with fully inserted lifting element 7 against a contact element 6. In order to ensure a permanent electrical contact between the tension member 11 and the contact element 6, the Contact elements 6 be designed resiliently. For this purpose, for example, a spring between the contact element 6 and the second housing part 4 are arranged, or

Contact element 6 itself can be used as a resilient element

be educated.

The contact elements 6 are preferably electrically connected to an evaluation unit (not shown). In this case, each contact element 6 can be contacted, or only

individual, for example, only those contact elements 6, which are in electrical contact with the outermost tension members 11 of the support means 1. If not all

Contact elements 6 can be contacted, they can

be electrically interconnected.

By bridge connections between the tension members 11 of the support means 1, a plurality of tension members 11 to a

be combined electrical circuit, which reduces the number of necessary measuring operations. The lifting elements 7 are formed in the illustrated embodiment as screws. But they can also be designed differently, for example as rivets. In addition, the lifting elements 7 in the housing 3, 4 of

Contacting device 2 may be integrated, or be executed as in the illustrated embodiment as separate elements, which are connected at the intended location with the housing 3, 4.

The lifting elements 7 consist in the illustrated embodiment of a bolt 16 and a screw head 15. The bolt 16 is dimensioned such that it fits into the openings 17 of the housing 3, 4. The openings 17 preferably have a thread into which the

screw-like lifting elements 7 can be screwed.

The lifting elements 7 are preferably made of electrically non-conductive material. As a result, the lifting element 7 does not connect two adjacent tension members 11 with each other in an electrically conductive manner. An electrical bridging of two adjacent tension members 11 would possibly lead to incorrect conclusions in the evaluation of the signal. The

Lifting elements 7 can also be made of an electrically conductive

Material to be made, which is coated with an electrically non-conductive layer. In another

Embodiment, only the lateral part of the lifting elements 7 coated with electrically non-conductive material, while the head and or with the tension members 11 coming into contact foot surface of electrically conductive

Material are formed.

The fastening element 10 holds the first housing part 3 and the second housing part 4 together, so that the first housing part 3 and the second housing part 4 releasably

connected to each other. As fasteners 10, for example, screws and corresponding threads may be provided, or other attachment mechanisms such as a clip system with a male and a female part. The housing 3, 4 of

However, contacting device 2 can also be formed in one piece. In this case, the support means 1 must be passed through the recess 14 to the

To arrange contacting device 2 at a predetermined location on the support means 1. A further embodiment of the contacting device 2 is shown by way of example in FIGS. 4 and 5. FIG. 4 shows an exemplary contacting device 2 with suspension element 1 inserted therein, and FIG. 5 shows the contacting device 2 from FIG. 4 along section line XX.

In this embodiment, a respective lifting element 7 raises two adjacent tension members 11 from the jacket 12 of the

Tragmittels 1. This will be the two adjacent

Zugträger 11 together lifted or pushed into a recess of the recess. Preferably, a contact element 6 is arranged in each recess. The

Contact elements 6 of this embodiment are wider than the contact elements 6 of the embodiment in Figures 3a to 3c, so that the two adjacent tension members 11 can be brought into electrical contact with the same contact element 6. In this embodiment, the number of

Lifting elements 7 of half the number of tension members 11 of

Supporting means 1. The lifting elements 7 are preferably arranged in a first row 8 and a second row 9 on the first housing part 3, so that more space is available for each lifting element.

In the elevator installation 40 shown schematically in FIG. 1, for example, a contacting device 2 such as that in FIG. 2 and a contacting device 2 such as those in FIG. 4 can be used. Because the tension members 11 are connected to each other at one end 1.1 of the support means 1 by the contacting device 2 of Figure 4, only on one side of the support means 1 is a tapping Contact elements 6 necessary. There are two each

adjacent tensile carriers 11 combined to form an electrical circuit. Alternatively, more than two adjacent tension members 11 can be combined to form an electrical circuit, for example, 4, 6, 8, 10, or 12. In an odd number of tension members 11 in an electrical circuit at both ends of the support means 1, the contact elements 6 with further electrical and

be connected to electronic elements.

When arranging the contacting device 2 on the support means 1, in an exemplary embodiment, a first housing part 3 and a second housing part 4 are arranged on each side of the support means 1. through

Fixing elements 10, the first housing part 3 and the second housing part 4 are releasably connected together.

For example, screws and corresponding threads can be used for this purpose. After arranging the contacting device 2 on

Supporting means 1, the lifting elements 7 are driven by the support means 1. If screws are used as lifting elements 7, the lifting elements 7 are screwed into the suspension element 1, so that the tension members 11 are lifted out of the shell 12 of the suspension element 1.

The detached from the support means 1 tension members 11 are raised so far or out of the jacket 12th

pressed until an electrical contact between the

Tensile beams 11 and the associated contact elements 6 is made. The helical lifting elements 7 may for example be designed such that at maximum attracted lifting element 7 a secure contact between the tension member 11 and the contact element 6 is made.

After contacting the tension members 11 by the contact elements 6, a voltage is applied, so that a test current flows through the tension members 11 and through the connected to a circle tension member 11 to determine the state of the tension members 11. With damaged tension members 11, the electrical resistance in the tension members 11 is greater, which is due to an evaluation of the test current

can be determined.

Claims

claims

1. contacting device for electrical

Contacting of tension members of a suspension element in an elevator installation, the contacting device comprising: a housing (3, 4) with a recess in which a portion of the suspension element (1) is receivable, so that the housing (3, 4) this

Section of the support means (1) substantially encloses; at least one contact element (6) which is arranged in the recess of the housing (3, 4); at least one lifting element (7), which from the

Housing (3, 4) is supported; wherein the at least one lifting element (7) can be guided by the suspension element (1) in such a way that at least one tension member (11) can be lifted out of a jacket (12) of the suspension element (1) and thus with the

Contact element (6) can be brought into electrical contact.

2. contacting device according to claim 1, wherein the at least one lifting element (7) as a screw

is trained.

3. contacting device according to one of

preceding claims, wherein the at least one lifting element (7) at points, which with a tension member (11) of the suspension element (1) can come into contact, at least on an outer surface of electrically non-conductive material is formed. 4. contacting device according to one of

preceding claims, wherein the housing (3,

4) of a first housing part (3) and a second

Housing part (4), wherein the first housing part (3) and the second housing part (4) are releasably connectable to each other.

5. contacting device according to one of

preceding claims, wherein on the housing (3, 4) projections (5) are formed with bearing surfaces (18) which protrude into the recess, so that the support means (1) of the support surfaces (18) is sustainable and so in each case between two projections ( 5) a tension member (11) is receivable.

6. contacting device according to one of

previous claims, wherein a number of

Lifting elements (7) corresponds to a number of tension members (11), and or that the lifting elements (7) in a first row (8) and a second row (9) in

Housing (3, 4) are arranged.

7. contacting device according to one of claims 1 to 5, wherein a number of the lifting elements (7) corresponds to one half of a number of the tension members (11), and / or wherein each two adjacent tension members (11) from the jacket (12) of the suspension means ( 1) of only one lifting element (7) can be lifted out.

8. contacting device according to claim 7, wherein two adjacent tension members (11) via a contact element (6) are electrically connected to each other.

9. elevator installation with a cabin (41) and a

Counterweight (42), wherein the cabin (41) and the

Counterweight (42) by means of support means (1) which are drivable by a drive (44) are movable, and wherein a contacting device (2) according to one of claims 1 to 8 on the support means (1) is arranged.

10. elevator installation according to claim 9, wherein each one

Contacting device (2) in each case between a Tragmittelbefestigungsvorrichtung (47) and a

Tragmittelende (1.1) is arranged, wherein one of the two contacting devices (2) at least two tension members (11) electrically connected to each other, and the other contacting device (2) is connected to an evaluation unit.

11. Method for electrical contacting of

Tensile beams in a suspension element of an elevator installation, the method comprising the steps:

Arranging a housing (3, 4) on the support means (1), so that a portion of the support means (1) in

Is substantially enclosed by the housing (3, 4); and

Lifting of at least one tension member (11) from its original position by means of at least one lifting element (7) which extends from the housing (3, 4) is supported, so that an electrical contact between the at least one tension member (11) and a contact element (6), which in the housing (3, 4) is arranged, is produced.

12. The method of claim 11, wherein the at least one lifting element (7) in the support means (1) is screwed.

13. The method according to any one of claims 11 or 12, wherein when lifting the at least one tension member (11) from its original position, this at least one tension member (11) from a jacket (12) of the support means (1) is released.

14. The method according to any one of claims 11 to 13, wherein each tension member (11) of the support means (1) each near a support means end (1.1) is electrically contacted with a contact element (6), so that each tension member (11) of two contact elements (6 ), which belong to different contacting devices (2), is contacted.

15. The method according to any one of claims 11 to 14, wherein after establishing an electrical contact between at least one tension member (11) and a

Contact element (6) a voltage is applied, so that a test current flows through at least one tension member (11).