Bearing mounting structure for monitoring bearing temperature

Abstract

The utility model relates to a bearing installation structure for monitoring the temperature of a bearing, and the structure comprises a temperature sensor which comprises a flexible circuit board and at least two temperature sensing elements connected to the flexible circuit board; the bearing opponent piece is used for coaxially penetrating through the bearing inner ring and making contact with the inner wall of the bearing inner ring so as to radially limit the bearing inner ring, a mounting groove extending in the axial direction is formed in the outer wall of the bearing opponent piece, the flexible circuit board is embedded in the mounting groove, and the two thermal resistors are distributed in the axial direction of the bearing opponent piece at intervals and used for making contact with the inner wall of the bearing inner ring. The temperature sensor is designed to comprise the flexible circuit board and the temperature sensing element, the temperature of the bearing is directly measured through the temperature sensing element, the accuracy of bearing temperature monitoring is improved, the bearing opponent piece does not need to be punched, the thickness of the mounting groove is only small, the influence on the strength of the bearing opponent piece is reduced, and the cost is reduced. Moreover, the installation of the temperature sensor is not liable to be interfered by a transmission assembly in the opponent piece by the bearing, and the implementation is better.

Description

Technical Field

[0001] The utility model relates to the field of bearing working temperature detection technology, and particularly relates to a bearing mounting structure for monitoring the temperature of a bearing. Background Art

[0002] Bearings are key components of rotating machinery and are widely used in various fields such as machine tools, transportation, aerospace, and daily life. Their main function is to support the rotating body of the machine, reduce the friction coefficient during its movement, and ensure its rotational accuracy. During operation, the temperature of the bearing will rise. Excessive temperature can cause deformation and damage to the bearing components. Therefore, it is necessary to monitor the working temperature of the bearing to take measures to avoid bearing damage when the bearing temperature is too high.

[0003] Currently, when monitoring the temperature of an outer-ring rotating bearing, it is usually necessary to drill holes in the bearing support to install a temperature sensor through threading. This has a great impact on the strength of the support and the installation process is complex. Moreover, when there are transmission components inside the support, it cannot be implemented due to movement interference. Summary of the Utility Model

[0004] Based on the above description, the utility model provides a bearing mounting structure for monitoring the temperature of a bearing to solve the problems in the related technology that installing a temperature sensor through drilling and threading has a great impact on the strength of the support, the installation process is complex, and it cannot be implemented due to the presence of transmission components inside the support.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The present application provides a bearing mounting structure for monitoring the temperature of a bearing, and the technical solution adopted is as follows:

[0007] A bearing mounting structure for monitoring the temperature of a bearing, comprising:

[0008] A temperature sensor, which includes a flexible circuit board and at least two temperature sensing elements connected to the flexible circuit board;

[0009] A bearing mating part, which is used to coaxially pass through the inner ring of the bearing and contact the inner wall of the bearing inner ring to radially limit the bearing inner ring. An installation groove extending axially is provided on the outer wall of the bearing mating part. The flexible circuit board is embedded in the installation groove, and the two thermal resistors are distributed at intervals along the axis of the bearing mating part and are used to contact the inner wall of the bearing inner ring.

[0010] Preferably, the installation groove is filled with silicone potting.

[0011] Preferably, the flexible circuit board is connected with a cable for transmitting data, and the cable is connected with a connector.

[0012] Preferably, a limiting member is coaxially arranged around the bearing mating member, and the limiting member is used to contact one end surface of the inner ring of the bearing in the axial direction to axially limit the bearing. The installation groove extends to the area between the limiting member and the bearing mating member, and a wire hole is radially formed through the side wall of the limiting member and communicated with the installation groove, and the cable passes through the wire hole.

[0013] Preferably, the wire hole and the installation groove are filled with silicone by potting.

[0014] Preferably, the temperature sensing element includes PT1000.

[0015] Preferably, the bearing mating member includes a shaft tube or a bridge housing.

[0016] Preferably, at least two temperature sensors are provided, and at least two temperature sensors are distributed at intervals along the circumferential direction of the bearing mating member.

[0017] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects:

[0018] In the present application, the temperature sensor is designed to include a flexible circuit board and a temperature sensing element, and an installation groove is formed on the contact surface between the bearing mating member and the bearing to accommodate the flexible circuit board. After the flexible circuit board is embedded in the installation groove, the temperature sensing element can be directly in contact with the inner ring of the bearing, so as to directly measure the temperature of the bearing through the temperature sensing element, thereby improving the accuracy of bearing temperature monitoring. Since the installation groove is arranged on the outer wall of the bearing mating member, there is no need to drill holes in the bearing mating member, and due to the thin and light characteristics of the flexible circuit board, the installation groove only needs a small thickness to accommodate the flexible circuit board, thereby reducing the influence on the strength of the bearing mating member and ensuring the installation stability of the bearing; and the installation of the temperature sensor is not easily interfered by the internal transmission components of the bearing mating member, and has better feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a bearing installation structure for monitoring the temperature of a bearing provided by an embodiment of the present invention;

[0020] Figure 2 is a partial structural diagram of a bearing installation structure for monitoring the temperature of a bearing provided by an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a temperature sensor in a bearing installation structure for monitoring the temperature of a bearing provided by an embodiment of the present invention.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS:

[0023] 1. Temperature sensor; 11. Flexible circuit board; 12. Temperature sensing element; 13. Cable; 2. Bearing mating part; 21. Installation groove; 3. Limiting part; 31. Wire hole; 4. Bearing inner ring. Detailed implementation manners

[0024] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant attached drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0026] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between an element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the attached drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (for example, rotated 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0028] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" or "having" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] Refer toFigures 1-3 As shown, an embodiment of the present application provides a bearing mounting structure for monitoring the temperature of a bearing, including a temperature sensor 1 and a bearing counterpart 2.

[0030] Referring to Figures 2-3 As shown, among them, the temperature sensor 1 includes a flexible circuit board 11 and at least two temperature sensing elements 12 connected to the flexible circuit board 11. Among them, the temperature sensing element 12 detects the temperature of the object to be measured and converts it into an electrical signal, which is output through the flexible circuit board 11. The flexible circuit board 11 is connected to a cable 13, and the signal is output through the cable 13. The cable 13 is connected to a connector, and the connector is used to dock with an external device to transmit the detection data to an external control system.

[0031] Referring to Figures 1-2 As shown, the bearing counterpart 2 is used to coaxially pass through the inner ring 4 of the bearing and contact the inner wall of the inner ring 4 of the bearing to radially limit the inner ring 4 of the bearing. An installation groove 21 extending axially is provided on the outer wall of the bearing counterpart 2. The flexible circuit board 11 is embedded in the installation groove 21, and two thermal resistors are distributed at intervals along the axis of the bearing counterpart 2 and are used to contact the inner wall of the inner ring 4 of the bearing.

[0032] Specifically, the bearing counterpart 2 is used to provide support and limit for the bearing, and may specifically include components directly connected to the bearing such as a shaft tube or a bridge housing. The installation groove 21 is opened on the outer wall of the bearing counterpart 2 and is set according to the shape and thickness of the flexible circuit board 11 of the temperature sensor 1, so that the flexible circuit board 11 can be embedded in the installation groove 21 and ensure that the temperature sensing element 12 contacts the inner ring 4 of the bearing, so as to directly measure the temperature of the inner ring 4 of the bearing through the temperature sensing element 12.

[0033] Referring to Figures 1-2 As shown, a limiting member 3 is coaxially arranged around the bearing counterpart 2. The limiting member 3 is used to contact one end face of the inner ring 4 of the bearing in the axial direction to axially limit the bearing. Specifically, the limiting member 3 is annularly arranged around the bearing counterpart 2, and is fixedly connected to the bearing counterpart 2. After the bearing counterpart 2 passes through the inner ring 4 of the bearing, it contacts the end face of the inner ring 4 of the bearing through the limiting member 3 to axially limit the bearing. At this time, in order to facilitate the arrangement of the cable 13 of the temperature sensor 1, the installation groove 21 extends to the area between the limiting member 3 and the bearing counterpart 2, and a through hole 31 communicating with the installation groove 21 is radially opened on the side wall of the limiting member 3, and the cable 13 passes through the through hole 31.

[0034] After the assembly of the bearing counterpart 2 and the temperature sensor 1 is completed, after the bearing is installed on the bearing counterpart 2, the through hole 31 and the installation groove 21 are potted with silicone to improve the integrity and installation stability of the temperature sensor 1, so as to stably monitor the temperature of the bearing.

[0035] During the operation of the bearing, the temperature sensing element 12 is in direct contact with the inner ring 4 of the bearing, and the temperature of the bearing is directly measured through the temperature sensing element 12, thereby improving the accuracy of bearing temperature monitoring. Moreover, due to the thin and light characteristics of the flexible circuit board 11, the installation groove 21 only needs a relatively small thickness to accommodate the flexible circuit board 11, reducing the impact on the strength of the mating part 2 of the bearing and ensuring the installation stability of the bearing.

[0036] The temperature data detected by the temperature sensor 1 is transmitted to the control system through the cable 13 and the connector. The control system can control the alarm module to start when the bearing temperature is too high, achieving the purpose of bearing high-temperature warning.

[0037] Specifically, the temperature sensing element 12 may include elements such as PT1000 for temperature measurement. The number of temperature sensing elements 12 can be set according to the number of points to be detected on the bearing. In some embodiments, the temperature sensing elements 12 can also be arranged at intervals along the circumferential direction of the bearing. The number of cores of the cable 13 can be designed according to needs, and correspondingly, the connector is adapted to the cable 13.

[0038] To further improve the accuracy of bearing temperature monitoring, at least two temperature sensors 1 can be provided, and at least two temperature sensors 1 are distributed at intervals along the circumferential direction of the mating part 2 of the bearing. The temperatures at multiple positions on the circumference of the bearing can be monitored through at least two temperature sensors 1, and the control system can judge the working state of the bearing based on the data of the multiple temperature sensors 1.

[0039] The temperature sensor 1 of the present application can also be applied as an independent product to components that need to monitor temperature. In actual application, a groove for installing the temperature sensor 1 can also be provided on the component according to needs, so that the temperature sensor 1 can measure the temperature of the object to be measured more accurately and reduce the impact on the original structure of the component due to the setting of the sensor.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bearing mounting structure for monitoring bearing temperature, characterized in that, Comprising: A temperature sensor (1), which includes a flexible circuit board (11) and at least two temperature sensing elements (12) connected to the flexible circuit board (11); A bearing counter member (2), which is used to coaxially pass through the inner ring (4) of the bearing and contact the inner wall of the inner ring (4) of the bearing to radially limit the inner ring (4) of the bearing. An installation groove (21) extending axially is provided on the outer wall of the bearing counter member (2). The flexible circuit board (11) is embedded in the installation groove (21), and at least two of the temperature sensing elements (12) are spaced apart axially along the bearing counter member (2) and are used to contact the inner wall of the inner ring (4) of the bearing.

2. The bearing mounting structure for monitoring the bearing temperature according to claim 1, characterized in that: The installation groove (21) is filled with silicone by potting.

3. The bearing mounting structure for monitoring the bearing temperature according to claim 1, wherein: The flexible circuit board (11) is connected to a cable (13) for transmitting data, and the cable (13) is connected to a connector.

4. The bearing mounting structure for monitoring the bearing temperature according to claim 3, characterized in that: A limiting member (3) is coaxially arranged around the outside of the bearing counter member (2). The limiting member (3) is used to contact one end face of the inner ring (4) of the bearing axially to axially limit the bearing. The installation groove (21) extends to the area between the limiting member (3) and the bearing counter member (2), and a through hole (31) communicating with the installation groove (21) is radially formed on the side wall of the limiting member (3), and the cable (13) passes through the through hole (31).

5. The bearing mounting structure for monitoring the bearing temperature according to claim 4, characterized in that: The through hole (31) and the installation groove (21) are filled with silicone by potting.

6. The bearing mounting structure for monitoring the bearing temperature according to claim 1, characterized in that: The temperature sensing element (12) includes PT1000.

7. The bearing mounting structure for monitoring the bearing temperature according to claim 1, characterized in that: The bearing counter member (2) includes a shaft tube or a axle housing.

8. The bearing mounting structure for monitoring the bearing temperature according to claim 1, wherein: At least two temperature sensors (1) are provided, and at least two temperature sensors (1) are spaced apart circumferentially along the bearing counter member (2).

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