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DE-102026112944-A1 - Belt clamping device for belts of belt-driven elevator systems

DE102026112944A1DE 102026112944 A1DE102026112944 A1DE 102026112944A1DE-102026112944-A1

Abstract

The invention relates to a belt clamping device (10) for at least two belts (1; 1.1, 1.2, 1.3) of belt-driven elevator systems (100), comprising two plates (11, 12) and positive-locking/force-locking clamping means (13) for clamping the plates (11, 12) against each other. The plates (11, 12) each have at least one friction section (14) designed to bear against the belts (1). To provide a versatile and reliable aid for various maintenance situations, the belt clamping device (10) has a load-bearing eyelet (15) or similar fastening means on at least one of the plates (11, 12). It is dimensioned and designed for the simultaneous clamping and clamping of at least two adjacent belt sections (1a, 1b) of at least two belts (1) between the friction sections (14). This enables efficient handling of several belts (1) simultaneously, for example to secure a counterweight (102) or to couple with a chain hoist (103.1) of an extension device (103).

Inventors

  • Alexander Geissler

Assignees

  • TK ELEVATOR INNOVATION AND OPERATIONS GMBH

Dates

Publication Date
20260513
Application Date
20260327

Claims (13)

  1. Belt clamping device (10) for at least two belts (1; 1.1, 1.2, 1.3) of belt-driven elevator systems (100), comprising two plates (11, 12) and positive-locking/force-locking clamping means (13) for clamping the plates against each other, wherein the plates (11, 12) each have at least one friction section (14) designed to abut at least one belt (1); characterized in that the belt clamping device (10) has a load-bearing eyelet (15) or similar load-bearing fastening means or load-bearing fastening option on at least one of the plates (11, 12) and is dimensioned and designed for enclosing and clamping at least two belt sections (1a, 1b) of at least two belts (1; 1.1, 1.2, 1.3) arranged next to each other and contacting the plates (11, 12) between the friction sections (14).
  2. Belt clamping device according to Claim 1 , wherein the belt clamping device is configured to act or be used, in a device-technically unchanged design, at least in the following three situations or for the following three tasks as a safety measure preferably only to be used temporarily or at least as an aid preferably only required temporarily: securing at least one counterweight, coupling an extension device of the elevator system for pulling a car or a counterweight of the elevator system out of a catch of the elevator system, balancing belt tensions.
  3. Belt clamping device according to Claim 1 or 2 , wherein the load-bearing eyelet or similar load-bearing fastening device or a corresponding load-bearing fastening option is provided laterally on at least one of the plates, in particular at least approximately in the middle in the transverse direction.
  4. Belt clamping device according to one of the preceding claims, wherein the load-bearing eyelet or similar load-bearing fastening means is movably mounted about at least one spatial axis on at least one of the plates, in particular tiltable about a tilting axis and/or pivotable about a pivoting axis that is at least approximately horizontally aligned.
  5. Belt clamping device according to one of the preceding claims, wherein the belt clamping device is configured to enclose at least one of at least three belt sections of at least three belts, in particular all three belt sections arranged simultaneously side by side in the transverse direction, and to press the plates between the plates in a frictional manner.
  6. Belt clamping device according to one of the preceding claims, wherein the plates are arranged to be clamped against each other at at least four, preferably at least six, further preferably at least eight clamping points, in particular at eight clamping points designed as feedthroughs through which, for example, clamping screws can be guided, wherein the at least two belt sections of at least two belts to be arranged next to each other and contacting the plates are advantageously arranged between at least two of the clamping points.
  7. Belt clamping device according to one of the preceding claims, wherein the plates define a plurality of clamping points, preferably at least eight, which are arranged in the transverse direction at at least three different locations, and between which at least two friction sections are provided for contact by at least one belt each, in particular with the plates having a width/extent when oriented as intended in the transverse direction, which is greater than a factor of 3 of the belt width of one of the enclosed belts.
  8. Belt clamping device according to one of the preceding claims, wherein the belt clamping device is configured to interact with at least one chain traction element or similar traction element other than a drive belt via the load-bearing eyelet or similar load-bearing fastening element.
  9. Method for securing or holding or coupling belts (1; 1.1, 1.2, 1.3) by clamping belt sections (1a, 1b) of at least two belts (1; 1.1, 1.2, 1.3) of belt-driven elevator systems (100) in at least one friction section (14) between two plates (11, 12) by clamping the plates against each other; characterized in that the method is carried out by means of a belt clamping device (10) according to one of the preceding claims for at least two adjacent belt sections (1a, 1b) of at least two belts (1; 1.1, 1.2, 1.3), in particular comprising the step: tensioning at least one of the belts (1; 1.1, 1.2, 1.3) with a first predefined pretension in a belt-specific static friction section (14) between the plates (11, 12).
  10. Method according to the preceding method claim, wherein the load-bearing eyelet or similar load-bearing fastening means of the belt clamping device is coupled to a chain hoist or similar pulling means of a/the elevator system.
  11. Use of a belt clamping device (10) according to one of the Claims 1 until 8 for the frictional clamping of belt sections (1a, 1b) of at least two belts (1; 1.1, 1.2, 1.3) mounted side by side simultaneously.
  12. Use of a belt clamping device (10) according to one of the Claims 1 until 8 for clamping belts (1; 1.1, 1.2, 1.3) on one side on the counterweight side of a lift system (100), wherein the load-bearing eyelet (15) or similar load-bearing fastening means is coupled to a chain hoist (103.1) or similar pulling means of an extension device (103) of the lift system.
  13. Use of a belt clamping device (10) according to one of the Claims 1 until 8 for clamping individual belts (1; 1.1, 1.2, 1.3) with a predefined pretension, wherein the load-bearing eyelet (15) or similar load-bearing fastening means of the belt clamping device (10) is coupled to a chain hoist (103.1) or similar pulling means of an extension device (103) of a/the elevator system (100) and is placed under a predefined tensile load, in particular for the purpose of determining and adjusting the belt tension.

Description

TECHNICAL AREA The present invention relates to a belt clamping device for at least two belts of belt-driven elevator systems, comprising two plates and positive-locking/non-positive-locking clamping means for clamping the plates against each other, wherein each plate has a static friction section configured for contact with at least one belt. Furthermore, the present invention relates to a method for securing, holding, or coupling belts by clamping belt sections of at least two belts of belt-driven elevator systems in at least one static friction section between two plates by clamping the plates against each other. Finally, the present invention also relates to the use of such a belt clamping device for clamping belts with a predefined pretension for the static friction clamping of belt sections, particularly in combination with the use of a chain hoist of an extension device coupled to, or to be coupled to, the belt clamping device. In particular, the invention relates to a device and a method according to the preamble of the respective independent claim. BACKGROUND OF THE INVENTION Maintenance and repair work is also required for belt-driven elevator systems. For example, the drive and/or a braking device may need to be replaced. Such replacement or maintenance work may also be necessary for the suspensions and guides for the traction elements or belts. Overall, at least three different situations typically arise in which skilled workers require the use of tools: securing at least one counterweight, especially when a belt comes loose on one side; working with a pulling device to extract the car or the counterweight(s) from the catch; and working to adjust belt tension. According to current technology, each of these situations requires a situation-specific approach, more or less improvised, possibly with the aid of various tools. Therefore, there is interest in improved equipment to handle several of these situations safely and efficiently. Currently, no tools or aids are known that can adequately and easily support work on the belt suspensions. For example, the counterweight in the pit must be placed on a suitable support and additionally secured against falling with a further safety measure before the driver's cabin can be lifted and the belts relieved of tension for further work. The publication can serve as an example. DE 10 2024 118 449 A1 This refers to a type of belt connector with plate clamps for the friction-fit fastening of tensioned/pressed belt sections of a (single) belt acting as a load-bearing element in the drive train of an elevator system. The plate clamps can be tensioned against each other using fasteners, such as screws, to relieve the load on the section of the belt supporting the elevator car. Using such a belt connector, two belt sections can be fixed against each other in an overlapping section, thus preventing any height adjustment. This eliminates the need for ceiling supports and/or dismantling work, such as on track lining structures, particularly during maintenance work at the shaft head. Based on the current state of the art, there is a need for improved and simplified measures in connection with as many of the different situations of maintenance and repair work on belt-driven elevator systems as possible. Description - Technical Solution The objective is to provide a device and method for clamping belts in elevator systems, enabling the coverage and safeguarding of as many different maintenance and repair situations as possible while maintaining good variability, safety, and efficiency. Furthermore, the objective is to design such devices and methods in such a way that they can be implemented and used as generally as possible, even with the specific belt drive configurations of individual systems. This problem is solved by a belt clamping device according to claim 1, by a method according to the dependent method claim, and by uses according to the corresponding dependent use claims. Advantageous embodiments of the invention are explained in the respective dependent claims. The features of the following The described embodiments can be combined with each other, unless explicitly stated otherwise. A belt clamping device for at least two belts of belt-driven elevator systems is provided, comprising two plates and form-fit/force-fit clamping means for clamping the plates against each other, wherein the plates each have at least one friction section designed to rest against at least one belt; According to the invention, it is proposed that the belt clamping device has a load-bearing eyelet or similar load-bearing fastening element or fastening option on at least one of the plates and is dimensioned and configured for enclosing and tensioning at least two adjacent belt sections of at least two belts, which are in contact with the plates, between the static friction sections, i.e., in contact with the at least one static friction section of the respective plate. This provides a t