Temperature sensor bearing assembly

Abstract

A temperature sensor bearing assembly includes an inner rotating component (1) and an outer rotating component (4) capable of relative rotation, and a temperature sensor module (5, 6) mounted on at least one of the inner rotating component (1) and the outer rotating component (4). The temperature sensor module (5, 6) is a wireless passive sensor module mounted in a mounting groove on the axial end face of the inner rotating component (1) and / or the outer rotating component (4). The temperature sensor bearing assembly can measure the temperature of rotating bearing components without altering the existing bearing assembly structure.

Description

Technical Field

[0001] This invention relates to the field of bearing technology. Specifically, this invention relates to a temperature sensor bearing assembly. Background Technology

[0002] As is well known, bearing clearance has a crucial impact on bearing life, and bearing temperature is one of the key factors affecting bearing clearance. Therefore, the actual operating temperature of the bearing must be considered during the design and use of the bearing. To accurately obtain the bearing temperature, a temperature measurement module needs to be installed on the bearing race. Traditional temperature sensors typically require connection to signal transmission lines and power supply lines, thus necessitating installation on a stationary bearing race. However, for certain specialized applications, such as planetary gear sets in some transmissions where the inner and outer races of the bearing rotate simultaneously, traditional measurement methods are no longer suitable.

[0003] Existing technology uses thermocouples mounted on the housing to measure the temperature of transmission bearings, but this is only suitable for support bearings, not planetary gear bearings. Several known techniques for measuring the temperature of rotating bearing components are as follows:

[0004] (1) An infrared temperature sensor can be placed outside the bearing to measure the temperature of the bearing in a non-contact manner, but the object being measured must remain stationary to prevent changes in the measurement point.

[0005] (2) Electric slip ring temperature sensor, which can use electric slip ring to power the sensor installed on the rotating bearing component and output measurement signal, but it requires a large installation space and is easily affected by wear, thus affecting its service life.

[0006] (3) A wireless temperature sensor equipped with a battery is powered by its own integrated battery and wirelessly transmits temperature measurement signals, but it also requires a large installation space and the battery needs to be replaced regularly.

[0007] In addition, there are some new measurement technologies that can measure rotating bearing components, but these require changes to the existing structure of the bearing components, which makes them more expensive to verify and produce. Summary of the Invention

[0008] Therefore, the technical problem to be solved by the present invention is to provide a temperature sensor bearing assembly that can measure the temperature of rotating bearing components without changing the existing bearing structure.

[0009] The aforementioned technical problem is solved by a temperature sensor bearing assembly according to the present invention. This temperature sensor bearing assembly includes an inner rotating component and an outer rotating component capable of relative rotation, and a temperature sensor module mounted on at least one of the inner and outer rotating components. The temperature sensor module is a wireless passive sensor module mounted in a mounting groove on the axial end face of the inner and / or outer rotating components. The rotating components can be, for example, a standard-designed inner and outer bearing ring, or a geared outer ring, tapered roller bearing ring, cylindrical roller bearing ring, ball bearing ring, or sliding bearing ring, etc. Using a wireless passive sensor module to replace a traditional temperature sensor eliminates the need for power lines to supply power to the sensor and signal lines to transmit measurement signals. Therefore, it can be directly mounted on the rotating bearing ring, thereby accurately measuring the temperature of the bearing ring. Simultaneously, this temperature sensor module is directly mounted in a mounting groove on the axial end face of the rotating component, occupying little space, requiring no significant changes to the bearing structure, and not affecting the structural strength of the bearing. Therefore, it reduces verification and production costs and has a wide range of applications.

[0010] According to a preferred embodiment of the present invention, in order to better utilize the existing bearing structure, the mounting groove for mounting the temperature sensor module can be an existing lubricating oil groove or other groove structure on the temperature sensor bearing assembly. In this way, the temperature sensor module can be installed without any changes to the existing bearing structure, maximizing the use of the existing bearing structure and thus minimizing verification and production costs.

[0011] According to another preferred embodiment of the invention, the temperature sensor module can be form-fitted into a mounting slot. This is the most common, simple, and reliable installation method.

[0012] According to another preferred embodiment of the present invention, the axial end face of the temperature sensor module facing away from the mounting groove can be a flat surface, and the axial length of the temperature sensor module is less than the axial depth of the mounting groove. The advantage of this design is that, after the temperature sensor module is installed in the mounting groove, it is completely within the mounting groove and does not protrude beyond the axial end face of the bearing, thus not altering the overall external profile of the bearing and avoiding interference with other components.

[0013] According to another preferred embodiment of the invention, the bottom of the mounting groove can have a straight profile in the radial section and an arcuate profile in the tangential section. This construction is compatible with conventional bearing lubricating oil grooves and can effectively prevent stress concentration in the bearing structure.

[0014] According to another preferred embodiment of the present invention, the stable installation of the temperature sensor module in the mounting slot can be ensured in several ways. For example, the mounting slot may have fixing slots at both ends in the tangential direction, and the temperature sensor module may have fixing protrusions at both ends in the tangential direction. When the temperature sensor module is installed in the mounting slot, the fixing protrusions are inserted into the fixing slots, thereby securing the temperature sensor module in the mounting slot. Furthermore, the temperature sensor module can also be fixed in the mounting slot using a high-strength, anti-aging, and high-temperature resistant adhesive.

[0015] According to another preferred embodiment of the present invention, in order to facilitate signal transmission, when both the inner rotating part and the outer rotating part are equipped with temperature sensor modules, the two temperature sensor modules can be located on the same axial end face of the inner rotating part and the outer rotating part.

[0016] According to another preferred embodiment of the invention, the temperature sensor module can be a wireless passive sensor module based on a surface acoustic wave (SAW) sensor or a radio frequency identification (RFID) sensor. Preferably, such a temperature sensor module may include a metal-resistant printed circuit board (PCB) antenna or a ceramic antenna with a plastic coating. The plastic coating on the surface of the ceramic antenna can prevent the ceramic antenna from separating in the event of breakage.

[0017] According to another preferred embodiment of the invention, the antenna of the temperature sensor module may have a radial polarization direction in order to amplify the signal transmission distance.

[0018] According to another preferred embodiment of the present invention, the temperature sensor bearing assembly may further include a reading antenna and a reader module disposed remotely from the inner rotating component, the outer rotating component and the temperature sensor module. The reading antenna is capable of wirelessly communicating with the antenna of the temperature sensor module to receive the temperature measurement signal from the temperature sensor module and process it in the reader module to read the measurement value. Attached Figure Description

[0019] The invention is further described below with reference to the accompanying drawings. In the drawings, the same reference numerals represent elements with the same function. Wherein:

[0020] Figure 1 This is a schematic diagram of a temperature sensor bearing assembly according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Detailed schematic diagram of the temperature sensor bearing assembly in the diagram; and

[0022] Figure 3 This is a schematic diagram of a temperature sensor bearing assembly according to another embodiment of the present invention. Detailed Implementation

[0023] The following describes specific embodiments of the temperature sensor bearing assembly according to the present invention with reference to the accompanying drawings. The detailed description and drawings below are provided to illustrate the principles of the invention, and the invention is not limited to the described preferred embodiments; the scope of protection of the invention is defined by the claims.

[0024] According to an embodiment of the present invention, a temperature sensor bearing assembly is provided. Figure 1 A schematic diagram of a temperature sensor bearing assembly according to an embodiment of the present invention is shown. Figure 1 As shown, the temperature sensor bearing assembly includes conventional bearing components: an inner rotating member 1, an outer rotating member 4, multiple rollers 3, and a cage 2. In this embodiment, the inner rotating member 1 is the inner ring of the bearing, and the outer rotating member 4 is in the form of a gear ring. The inner rotating member 1 is mounted radially inside the outer rotating member 4 along the same axis of rotation. The multiple rollers 3 are mounted radially between the inner rotating member 1 and the outer rotating member 4, and are uniformly spaced circumferentially by the cage 2.

[0025] In addition, the temperature sensor bearing assembly also includes components for measuring bearing temperature: one or more temperature sensor modules 5 mounted on the inner rotating component 1, one or more temperature sensor modules 6 mounted on the outer rotating component 4, and a reading antenna 7 and a reader module 8 disposed away from the rotating component. The temperature sensor modules 5 and 6 are wireless passive sensor modules; that is, they do not require an external power supply and can communicate wirelessly with the reading antenna 7 to send their temperature measurement signals, which are then processed and read in the reader module 8. Such wireless passive sensor modules can be, for example, SAW sensor- or RFID sensor-based wireless passive sensor modules. Temperature sensor modules 5 and 6 include antennas for transmitting wireless signals. The antenna type can be an anti-metal PCB antenna or a ceramic antenna. When temperature sensor modules 5 and 6 use ceramic antennas, a plastic coating can be applied to the surface of the ceramic antenna so that it will not separate even if it breaks.

[0026] Figure 2 Details of temperature sensor module 5 are shown. (For example...) Figure 2 As shown, the temperature sensor module 5 is shaped-fitted into a mounting groove on the axial end face of the inner rotating component 1. Preferably, this mounting groove can be an existing structural groove in the existing bearing structure, such as a lubricating oil groove, so that the temperature sensor module can be installed without changing the existing bearing structure. Figure 2As shown in the enlarged view, the bottom of the temperature sensor module 5 (i.e., the surface in contact with the mounting groove) has an arc-shaped profile in the tangential section and a straight profile in the radial section, conforming to the contour of the mounting groove. This allows the temperature sensor 5 to be fixed along the radial direction, avoiding stress concentration on the inner rotating part 1 during the hardening process. Furthermore, the arc-shaped contact surface ensures good contact and stable installation of the temperature sensor module 5 in the mounting groove. Fixing slots can be formed at the two ends of the arc-shaped surface of the mounting groove in the tangential direction. Correspondingly, fixing protrusions can also be formed at the two ends of the arc-shaped surface of the temperature sensor module 5 in the tangential direction. When the temperature sensor module 5 is installed in the mounting groove, the fixing protrusions on the temperature sensor module 5 can be inserted into the corresponding fixing slots, thereby stably positioning the temperature sensor module 5 relative to the mounting groove. The axial end face of the temperature sensor module 5 facing away from the mounting groove is a flat surface extending parallel to the axial end face of the inner rotating member 1. Furthermore, the axial length of the temperature sensor module 5 is less than the axial depth of the mounting groove. Therefore, when the temperature sensor module 5 is installed in the mounting groove, it is completely contained within the groove and does not protrude beyond the axial end face of the inner rotating member 1, thus avoiding interference with other components. The antenna in the temperature sensor module 5 has a radial polarization direction, which amplifies the signal transmission distance. Additionally, a high-strength, anti-aging, and high-temperature resistant adhesive can be applied between the temperature sensor module 5 and the mounting groove to firmly bond the temperature sensor module 5 to the mounting groove.

[0027] The temperature sensor module 6 and mounting slot on the outer transmission component 4 are basically the same in structure as the temperature sensor module 5 and mounting slot on the inner transmission component 1, and can be installed in the same way. The only difference is that for the temperature sensor module 6 on the outer rotating component 4, screws 9 can be added using the existing lifting threaded holes on the outer rotating component 4 to fix the temperature sensor module 6 in the mounting slot. This installation method... Figure 3 An alternative embodiment is shown.

[0028] To facilitate signal transmission, such as Figures 1 to 3 As shown, the temperature sensor module 5 on the inner rotating part 1 and the temperature sensor module 6 on the outer rotating part 4 are preferably located on the same axial end face. However, depending on the specific installation environment, the temperature sensor module 5 on the inner rotating part 1 and the temperature sensor module 6 on the outer rotating part 4 may also be located on different axial end faces.

[0029] The temperature sensor bearing assembly according to the present invention can be applied to various types of existing bearings, including not only the specific bearing types shown in the above embodiments and standard design bearings, but also tapered roller bearings, cylindrical roller bearings, ball bearings or sliding bearings, etc.

[0030] While possible embodiments have been described exemplarily in the foregoing description, it should be understood that numerous variations of embodiments exist through combinations of all known and readily conceived technical features and implementation methods. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not in any way limit the scope, application, or construction of the invention. The foregoing description is more intended to provide those skilled in the art with technical guidance for transforming at least one exemplary embodiment, wherein various changes, particularly regarding the function and structure of the components, can be made without departing from the scope of the claims.

[0031] Appendix Label Table

[0032] 1. Internal rotating component

[0033] 2 cages

[0034] 3 rollers

[0035] 4 External rotating parts

[0036] 5 Temperature sensor module

[0037] 6 Temperature Sensor Module

[0038] 7 Reading Antenna

[0039] 8 Reader Modules

[0040] 9 screws

Claims

1. A temperature sensor bearing assembly, comprising an inner rotating member (1) and an outer rotating member (4) rotatable relative to each other, and a temperature sensor module (5, 6) mounted on at least one of the inner rotating member (1) and the outer rotating member (4). Its features are, The temperature sensor modules (5, 6) are wireless passive sensor modules installed in mounting slots on the axial end faces of the inner rotating member (1) and / or the outer rotating member (4), wherein when the temperature sensor modules (5, 6) are installed in the mounting slots, the temperature sensor modules (5, 6) are completely contained in the mounting slots.

2. The temperature sensor bearing assembly according to claim 1, characterized in that, The mounting groove is the lubricating oil groove of the temperature sensor bearing assembly.

3. The temperature sensor bearing assembly according to claim 2, characterized in that, The temperature sensor modules (5, 6) are fitted into the mounting slot in a shape-fitting manner.

4. The temperature sensor bearing assembly according to claim 3, characterized in that, The axial end face of the temperature sensor module (5, 6) facing away from the mounting groove is a flat surface, and the axial length of the temperature sensor module (5, 6) is less than the axial depth of the mounting groove.

5. The temperature sensor bearing assembly according to claim 3, characterized in that, The bottom of the mounting groove has a straight profile in the radial section and an arc profile in the tangential section.

6. The temperature sensor bearing assembly according to claim 5, characterized in that, The mounting groove has a fixing slot at both ends in the tangential direction, and the temperature sensor module (5, 6) has a fixing protrusion at both ends in the tangential direction. When the temperature sensor module (5, 6) is installed in the mounting groove, the fixing protrusion is inserted into the fixing slot.

7. The temperature sensor bearing assembly according to claim 3, characterized in that, The temperature sensor modules (5, 6) are fixed in the mounting groove by a high-strength, anti-aging and high-temperature resistant adhesive.

8. The temperature sensor bearing assembly according to claim 1, characterized in that, The temperature sensor modules (5, 6) on both the inner rotating member (1) and the outer rotating member (4) are located on the axial end faces of the inner rotating member (1) and the outer rotating member (4) on the same side.

9. The temperature sensor bearing assembly according to claim 1, characterized in that, The temperature sensor modules (5, 6) are wireless passive sensor modules based on surface acoustic wave sensors or radio frequency identification sensors.

10. The temperature sensor bearing assembly according to claim 9, characterized in that, The temperature sensor modules (5, 6) include anti-metal printed circuit board antennas or ceramic antennas with plastic coatings.

11. The temperature sensor bearing assembly according to claim 9, characterized in that, The antennas of the temperature sensor modules (5, 6) have a radial polarization direction.

12. The temperature sensor bearing assembly according to any one of claims 1 to 11, characterized in that, The temperature sensor bearing assembly also includes a reading antenna (7) and a reader module (8) disposed away from the inner rotating part (1), the outer rotating part (4) and the temperature sensor modules (5, 6). The reading antenna (7) is capable of wirelessly communicating with the antenna of the temperature sensor modules (5, 6).

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