Mounting bracket for an auxiliary and protective tube for the sensor element of a screw monitoring system

Abstract

Holder (5), (6) for the sensor element (8) of a screw monitoring device, characterized in that a protective tube (4) is used to minimize the loads on the sensor element (8) caused by the holder (5), (6) and external influences.

Description

[0001] Bolted connections in the hub of a wind turbine are subject to dynamic stress due to the rotation of the rotor, which can lead to breakage or loosening of the bolts after a sufficiently long period. The bolt monitoring system according to patent DE 10 2025 212 906 B4 checks whether bolted connections have loosened or broken.

[0002] For the bolt monitoring system according to patent DE 10 2025 212 906 B4, a suitable sensor element is attached to each bolt of the bolted connection to be monitored in the hub of a wind turbine. As soon as a bolt loosens or breaks, the sensor element is damaged by the continuous rotation and the resulting change in the direction of the force resulting from gravity, triggering an alarm.

[0003] The mounting of the sensor element must be designed in such a way that, in the basic state (the screw connection is tightened correctly), the sensor element is best protected against damage due to the rotation of the rotor of the wind turbine.

[0004] Furthermore, the mounting of the sensor element must allow for the simplest possible installation. This is also advantageous for maintenance work.

[0005] In the event of a fault in the screw connection, the sensor element must remain as firmly connected as possible to the loose parts of the defective screw connection. Reference symbol list 1 screw head 2 mother 3 Threaded part of a screw connection 4 Protective tube 5. Mounting of the protective tube with closed cap 6. Holder of the protective tube with hole for the passage of the threaded part on the nut side of a screw connection 7. Clamping device for fixing the bracket to the screw connection 8 Sensor element QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2025 212 906 B4 [0001, 0002]

Claims

[1] Mounting bracket (5), (6) for the sensor element (8) of a screw monitoring system, characterized by , that a protective tube (4) is used to minimize the stresses on the sensor element (8) caused by the holder (5), (6) and external influences. [2] Mounting bracket (5), (6) according to claim 1, characterized by , that the protective tube (4) is flexible to ensure a softer entry of the sensor element. [3] Mounting bracket (5), (6) according to claim 1, characterized by , that the protective tube (4) has a special contour at its ends to ensure a smoother entry of the sensor element. [4] Mounting device (5), (6) according to any one of the preceding claims, characterized by that the bracket has a hole so that the threaded part of a screw fitting can be inserted through it. [5] Mounting device (5), (6) according to any one of the preceding claims, characterized by, that the protective tube (4) is arranged off-center, so that the protective tube (4) is guided around the threaded part of a screw connection. [6] Mounting device (5), (6) according to any one of the preceding claims, characterized by , that the support (5), (6) has a design feature that specifies a defined position of the clamping device (7).

Images