BELT TENSIONING MONITORING DEVICE

Abstract

Belt tensioning monitoring device for monitoring the belt tensioning of a belt of a belt drive system including a driving pulley and a driven pulley rotated by the driving pulley by way of the belt. The belt tensioning monitoring device is configured to determine the belt slip effect with at least two marks each located on one of the pulleys and sensors each configured to detect one mark and to send a signal to an electronic control unit.

Claims

1. A belt tensioning monitoring device for monitoring the belt tensioning of a belt of a belt drive system comprising: a driving pulley, and a driven pulley rotated by the driving pulley by way of the belt, wherein the belt tensioning monitoring device is configured to determine the belt slip effect with at least two marks each located on one of the pulleys and sensors each configured to detect one mark and to send a signal to an electronic control unit.

2. The belt tensioning monitoring device according to claim 1, wherein the first mark is a reflective mark or tape and the first sensor is an optical sensor.

3. The belt tensioning monitoring device according to claim 1, wherein the first mark is a magnetic element and the first sensor is a hall effect sensor configured for measuring the magnitude of a magnetic field generated by the magnetic element when passing through the sensor.

4. The belt tensioning monitoring device according to claim 1, wherein the second mark is a reflective mark or tape and the second sensor is an optical sensor.

5. The belt tensioning monitoring device according to claim 1, wherein the second mark is a magnetic element and the second sensor is a hall effect sensor configured for measuring the magnitude of a magnetic field generated by the magnetic element when passing through the sensor.

6. The belt tensioning monitoring device according to claim 1, wherein the electronic control unit comprises an estimation module configured to determine the slip effect of the belt according to the driven pulley revolutions compared to the driving pulley.

7. A belt drive system comprising: a belt, a driving pulley, a driven pulley rotated by the driving pulley by way of the belt, and a belt tensioning monitoring device that is configured to determine the belt slip effect with at least two marks each located on one of the pulleys and sensors each configured to detect one mark and to send a signal to an electronic control unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its advantages will be better understood by studying the detailed description of specific embodiment given by way of non-limiting examples and illustrated by the appended FIG. 1 which illustrates a schematic view of a belt drive system comprising a belt tensioning monitoring device according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0021] Referring to FIG. 1, which illustrates an embodiment of a belt tensioning monitoring device 10 for monitoring the belt tensioning of a belt 2 of a belt drive system 1 comprising a driving pulley 3 and a driven pulley 4 rotated by the driving pulley 3 thanks to the belt 2. For example, the belt 2 is a V-shaped belt.

[0022] The belt tensioning monitoring device 10 comprises a first mark 11 provided on the driving pulley 3 and a first sensor 12 configured to detect the first mark 11 and to send the signal of rotational speed of the driving pulley 3 to an electronic control unit 13 of the belt tensioning monitoring device 10.

[0023] The belt tensioning monitoring device 10 further comprises a second mark 14 provided on the driven pulley 4 and a second sensor 15 configured to detect the second mark 14 and to send the signal of rotational speed of the driven pulley 4 to the electronic control unit 13.

[0024] The first mark 11 may be a reflective mark or tape and the first sensor 12 may be an optical sensor, such as an infrared sensor.

[0025] Alternatively, the first mark 11 may be a magnet and the first sensor 12 may be a hall effect sensor for measuring the magnitude of a magnetic field generated by the magnet when passing through the sensor 12.

[0026] The second mark 14 may be a reflective mark or tape and the second sensor 15 may be an optical sensor, such as an infrared sensor.

[0027] Alternatively, the second mark 14 may be a magnet and the second sensor 15 may be a hall effect sensor for measuring the magnitude of a magnetic field generated by the magnet when passing through the sensor 15.

[0028] The electronic control unit 13 of the belt tensioning monitoring device 10 comprises an estimation module 13a configured to determine the slip effect of the belt 2 according to the driven pulley 4belt 2 revolutions compared to the driving pulley 3.

[0029] Thanks to the invention, slip effect of the belt may be efficiently estimated and thus the belt tensioning may be characterized.

[0030] The user may thus know if the tension of the belt is correct and adjust its tension or replace the belt if necessary.

[0031] It is to be understood for the present invention that belt means a single strand belt or a multibelt, and that the belt is for instance of the groove type or the V type, but not necessarily.