Oil temperature detection assembly and speed reducer

Abstract

The embodiment of the utility model discloses an oil temperature detection assembly and a speed reducer, and relates to the technical field of oil temperature detection assemblies. The oil temperature detection assembly comprises a straight shaft, a planetary gear and a half axle gear, the planetary gear is matched with the half axle gear and the straight shaft, the oil temperature detection assembly further comprises a locking structure and a temperature sensor, and the locking structure is matched with the half axle gear to lock the half axle gear; the temperature sensor is installed at the matching position of the straight shaft and the planetary gear. The oil temperature detection assembly can simulate the locking working condition of one side of a wheel through the locking structure, calculates the differential working condition through the torque and the rotating speed input by the input end, and can obtain the temperature of the linear shaft and the planetary gear under the differential working condition through the position arrangement of the temperature sensor so as to guide the design of a differential mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature detection, in particular to an oil temperature detection component and a reducer. Background Art

[0002] A three-in-one electric bridge usually refers to an electric drive bridge that integrates a controller, a motor, and a reducer. In the related art, the oil temperature in the reducer is usually measured during the design phase by installing a thermocouple (such as Figure 1 The temperature of the straight shaft and the planetary gears in the differential of the reducer is not able to be evaluated due to structural limitations, and the temperature here is very important for the normal use of the straight shaft. Excessive temperature will cause excessive wear of the coating on the straight shaft under differential conditions, resulting in the metal matrix being exposed and the roughness increasing. Continuing to use it will cause the straight shaft and the planetary gears to wear and bond, and eventually the straight shaft will break, the reducer will produce a loud abnormal noise, and even the power transmission will be interrupted.

[0003] Therefore, there is an urgent need for an oil temperature detection component and a reducer. Summary of the invention

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide an oil temperature detection component and a reducer. The oil temperature detection component can simulate the working condition of one side of the wheel locking through the locking structure, and calculate the differential working condition through the torque and speed input at the input end. At the same time, the position arrangement of the temperature sensor can obtain the temperature of the lower shaft and the planetary gear under the differential working condition, which is then used to guide the design of the differential.

[0005] The utility model embodiment discloses an oil temperature detection component, which includes a straight shaft, a planetary gear and a half-shaft gear, the planetary gears respectively cooperate with the half-shaft gear and the straight shaft, the oil temperature detection component also includes a locking structure and a temperature sensor, the locking structure and the half-shaft gear cooperate with each other to lock the half-shaft gear; the temperature sensor is installed at the cooperation position of the straight shaft and the planetary gear.

[0006] Furthermore, the oil temperature detection component also includes a shell, which has an assembly through hole along its own axial direction. The locking structure includes a locking tool and a locking bolt. The locking tool is arranged in the assembly through hole and cooperates with the half-shaft gear. The locking bolt is sequentially passed through the shell and the locking tool for locking the locking tool.

[0007] Furthermore, the assembly through hole is a countersunk hole, the locking tool has a large diameter end and a small diameter end that are mutually adapted to the countersunk hole, and the small diameter end has an external spline that is interconnected with the half-shaft gear.

[0008] Furthermore, the oil temperature detection component also includes a Bluetooth transmitter, which is electrically connected to the temperature sensor.

[0009] Furthermore, the oil temperature detection assembly also includes a connecting rod, a bearing and a bearing seat. One end of the connecting rod is fixedly connected to the straight shaft, and the other end of the connecting rod is sleeved with a bearing. The bearing is installed in the bearing seat, and the bearing seat is interference fit in the housing.

[0010] Furthermore, the connecting rod has a central hole, a wiring harness of the temperature sensor is passed through the central hole, and the wiring harness is connected to the Bluetooth transmitter.

[0011] Furthermore, the connecting rod is threadedly connected to the straight shaft, and the screwing direction of the thread is opposite to the rotation direction of the straight shaft itself.

[0012] Furthermore, the straight shaft has an axial hole, a connecting rod is passed through the axial hole, and the connecting rod has an internal thread; the connecting rod is fixedly connected to the straight shaft by a fixing bolt passing through the axial hole and engaging with the internal thread, and the inlet of the center hole is located on the side of the connecting rod.

[0013] Furthermore, the connecting rod comprises a plurality of split rod sections, a boss or a positioning ring is provided between two adjacent split rod sections, the free end of the tail split rod section is fixedly connected to the straight shaft, and the free end of the first split rod section is sleeved with a bearing.

[0014] Furthermore, the Bluetooth transmitter is fixedly mounted on the connecting rod.

[0015] Furthermore, the base of the Bluetooth transmitter is a wedge-shaped block, which is embedded in the wedge-shaped block through positioning bolts, and the Bluetooth transmitter is fixedly connected to the connecting rod.

[0016] Furthermore, a retaining spring is arranged on the circumference of the connecting rod.

[0017] Furthermore, a groove is provided at the matching position of the straight shaft and the planetary gear, and the temperature sensor is installed in the groove.

[0018] The utility model embodiment also discloses a reducer, comprising the above-mentioned oil temperature detection component.

[0019] The oil temperature detection assembly provided by the utility model has the following beneficial effects, including but not limited to:

[0020] The oil temperature detection component can simulate the working condition of one side of the wheel locking through the locking structure, and calculate the differential working condition through the torque and speed input at the input end. At the same time, the temperature of the lower shaft and the planetary gear under the differential working condition can be obtained through the position arrangement of the temperature sensor, which is then used to guide the design of the differential. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0022] Figure 1 A schematic diagram of the installation position of the reduction gearbox-level oil temperature sensor provided for the related technology;

[0023] Figure 2 A cross-sectional view of the oil temperature detection assembly provided in Example 1 of the utility model

[0024] Figure 3 A schematic diagram of the pre-processing of a straight shaft and the installation of a bearing seat provided in Example 1 of the utility model;

[0025] Figure 4 A schematic diagram of fixing the half-axle gear provided in Example 1 of the utility model;

[0026] Figure 5 A schematic diagram of the pre-assembly of the connecting rod provided in Example 1 of the utility model;

[0027] Figure 6 This is a schematic diagram of the assembly of the connecting rod provided in Example 1 of the utility model;

[0028] Figure 7 A schematic diagram of the pre-assembly of the connecting rod provided in Example 2 of the utility model;

[0029] Figure 8 This is a schematic structural diagram of the connecting rod provided in Example 3 of the utility model.

[0030] Icons: 1-slotted shaft; 2-bearing seat; 3-housing; 4-locking tool; 5-locking bolt; 6-connecting rod; 7-bearing; 8-circlip; 9-Bluetooth transmitter; 10-split rod; 11-locating ring; 12-shaft hole; 13-fixing bolt. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Example 1

[0034] Please refer to Figure 2 An embodiment of the utility model provides an oil temperature detection component, which includes a straight shaft 1, a planetary gear and a half-shaft gear. The planetary gears are respectively matched with the half-shaft gears and the straight shaft 1. The oil temperature detection component also includes a locking structure and a temperature sensor. The locking structure and the half-shaft gear cooperate with each other to lock the half-shaft gear; the temperature sensor is installed at the matching position of the straight shaft 1 and the planetary gear.

[0035] It is worth mentioning that the oil temperature detection component can simulate the working condition of one side of the wheel locking through the locking structure, and calculate the differential working condition through the torque and speed input at the input end. At the same time, the temperature of the lower shaft 1 and the planetary gear under the differential working condition can be obtained through the position arrangement of the temperature sensor, which can then be used to guide the design of the differential.

[0036] It is also worth noting that the temperature sensor in this embodiment can be a negative temperature coefficient (NTC) temperature sensor, which is characterized by a decrease in resistance as the temperature increases and an increase in resistance as the temperature decreases, and has the advantages of fast response, high accuracy, and low cost. Depending on the specific implementation environment, other types of temperature sensors may also be used, and this embodiment does not constitute a limitation on the type of sensor, but is merely an example thereof.

[0037] like Figure 3 and Figure 4 As shown, the oil temperature detection component also includes a shell 3, which has an assembly through hole along its own axial direction. The locking structure includes a locking tool 4 and a locking bolt 5. The locking tool 4 is arranged in the assembly through hole and cooperates with the half-shaft gear. The locking bolt 5 is sequentially passed through the shell 3 and the locking tool 4 to lock the locking tool 4.

[0038] It is worth noting that the oil temperature detection component cooperates with the half-shaft gear through the locking fixture 4, and the locking bolt 5 is inserted through the housing 3 and the locking fixture 4, so as to realize the axial locking of the locking fixture 4, thereby being able to well simulate the working condition of one side being locked. In addition, the housing 3 is provided with an assembly through hole along its own axial direction, so that the locking fixture 4 can be conveniently installed in the assembly through hole, which simplifies the assembly process of the component and improves the assembly efficiency.

[0039] In this embodiment, the assembly through hole is a countersunk hole, and the locking fixture 4 has a large diameter end and a small diameter end that are mutually adapted to the countersunk hole, and the small diameter end has an external spline that is interconnected with the half-shaft gear.

[0040] It is worth noting that by designing the assembly through hole as a countersunk hole, and making the locking fixture 4 have a large diameter end and a small diameter end that are mutually compatible with the countersunk hole, and the small diameter end has an external spline that is interconnected with the half-shaft gear, a tighter and more stable assembly is achieved. The design of the countersunk hole allows the locking fixture 4 to be completely embedded in the shell 3, thereby reducing the external resistance generated during operation and ensuring the stability and tightness of the assembly. At the same time, the large diameter end and the small diameter end of the locking fixture 4 match the design of the countersunk hole, ensuring the accuracy and stability of the assembly process and reducing the possibility of assembly errors. The external spline at the small diameter end is interconnected with the half-shaft gear, which further enhances the firmness and stability of the connection.

[0041] Please refer again Figure 1 The oil temperature detection component also includes a Bluetooth transmitter 9, which is electrically connected to the temperature sensor. It can be understood that by electrically connecting the Bluetooth transmitter 9 to the temperature sensor, a data transmission function is realized. This design enables the temperature sensor to transmit the collected temperature data to an external device via Bluetooth technology in real time, thereby facilitating the measurement and recording of the actual temperature.

[0042] Please refer to Figure 5 and Figure 6 The oil temperature detection component also includes a connecting rod 6, a bearing 7 and a bearing seat 2. One end of the connecting rod 6 is fixedly connected to the straight shaft 1, and the other end of the connecting rod 6 is sleeved with a bearing 7. The bearing 7 is installed in the bearing seat 2, and the bearing seat 2 is interference fit in the housing 3.

[0043] It is worth noting that the connecting rod 6 is fixedly connected to the straight shaft 1 at one end, and a bearing 7 is sleeved on the other end, which ensures the stable connection between the connecting rod 6 and the straight shaft 1 and provides axial support, so that the straight shaft 1 can rotate stably. At the same time, the bearing 7 is installed in the bearing seat 2, and the bearing seat 2 is fixed to the housing 3 by interference fit, providing additional support and stability, thereby ensuring the stable operation of the transmission system.

[0044] Please refer again Figure 5 and Figure 6 The connecting rod 6 has a center hole (not marked in the figure), the wiring harness of the temperature sensor is passed through the center hole, and the wiring harness is connected to the Bluetooth transmitter 9.

[0045] It is worth noting that the connecting rod 6 has a central hole, so that the wiring harness of the temperature sensor can pass through the central hole. This design optimizes the use of space, embeds the wiring harness inside the connecting rod 6, reduces the exposure of the external wiring harness, and improves the neatness and compactness of the assembly. In addition, the wiring harness is passed through the central hole of the connecting rod 6, which can effectively protect the wiring harness from damage by the external environment, such as friction, extrusion, etc., thereby helping to extend the service life of the wiring harness and reduce the frequency of maintenance and replacement.

[0046] In this embodiment, the connecting rod 6 is threadedly connected to the straight shaft 1, and the direction of the thread engagement is opposite to the rotation direction of the straight shaft 1. It can be understood that the installation of the connecting rod 6 and the straight shaft 1 through the reverse thread connection can prevent the connecting rod 6 from falling off when the reducer rotates forward.

[0047] In this embodiment, the base of the Bluetooth transmitter head 9 is a wedge-shaped block, which is embedded in the wedge-shaped block by positioning bolts, and the Bluetooth transmitter head 9 is fixedly connected to the connecting rod 6.

[0048] It is worth noting that the connection structure can improve the firmness and stability after the connection, and the wedge-shaped block design makes the installation process of the Bluetooth transmitter head 9 easier.

[0049] In this embodiment, a clamping spring 8 is further provided on the circumference of the connecting rod 6. It is understandable that the clamping spring 8 provided on the circumference of the connecting rod 6 can provide axial pressure to limit the axial movement or movement of the connecting rod 6 during operation, thereby ensuring the stability and reliability of the connection and preventing the connection from loosening or falling off due to vibration or load changes.

[0050] In this embodiment, a groove (not shown in the figure) is provided at the joint of the straight shaft 1 and the planetary gear, and the temperature sensor is installed in the groove. It can be understood that the provision of the groove can ensure accurate temperature detection while effectively utilizing space and improving the space utilization rate of the component.

[0051] This embodiment also provides a reducer, including the above-mentioned oil temperature detection component, having all its beneficial effects.

[0052] Example 2

[0053] Please refer to Figure 7 This embodiment also provides an oil temperature detection component, which has the same structure except for the connection structure between the straight shaft 1 and the connecting rod 6, and will not be described in detail here.

[0054] In this embodiment, the straight shaft 1 has an axial hole 12, a connecting rod 6 is passed through the axial hole 12, and the connecting rod 6 has an internal thread; a fixing bolt 13 passes through the axial hole 12 and engages with the internal thread, so that the connecting rod 6 is fixedly connected to the straight shaft 1, and the entrance of the center hole is located on the side of the connecting rod 6.

[0055] It is worth noting that the connection structure provides a stable connection, simplifies the assembly process, improves the connection strength and optimizes the installation position. Compared with the solution in Example 1, there is no need to limit the rotation direction of the straight shaft 1 during the test process.

[0056] Example 3

[0057] Please refer to Figure 8 This embodiment also provides an oil temperature detection component, which has the same structure except for the structure of the connecting rod 6, and will not be described in detail here.

[0058] In this embodiment, the connecting rod 6 includes a plurality of split rods 10, with a boss or a positioning ring 11 between two adjacent split rods 10, the free end of the tail split rod 10 is fixedly connected to the straight shaft 1, and the free end of the first split rod 10 is sleeved with a bearing 7.

[0059] It is worth noting that the connecting rod 6 design using a multi-section split rod 10 is flexible and adjustable, easy to install and maintain, and enhances the stability and reliability of the connection. The length of the connecting rod 6 can be adjusted according to specific needs and installation space limitations to adapt to different application scenarios and requirements.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

[0061] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0062] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described herein and shown may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0063] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0064] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0065] As used in the description herein and throughout the claims that follow, "a," "an," and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on," unless otherwise indicated.

[0066] The above description of the illustrated embodiments of the present invention (including the contents in the abstract of the specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments of the present invention, and these modifications will be within the spirit and scope of the present invention.

[0067] Systems and methods have been generally described herein as details that are helpful for understanding the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more specific details, or practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of the embodiments of the present invention.

Claims

1. An oil temperature detection assembly, comprising a straight shaft, a planetary gear and a half shaft gear, wherein the planetary gear cooperates with the half shaft gear and the straight shaft respectively, and is characterized in that: Also includes: A locking structure, wherein the locking structure cooperates with the side shaft gear to lock the side shaft gear; A temperature sensor is installed at the matching position between the straight shaft and the planetary gear.

2. The oil temperature detection assembly according to claim 1, characterized in that: The oil temperature detection component also includes a shell, which has an assembly through hole along its own axial direction. The locking structure includes a locking tool and a locking bolt. The locking tool is arranged in the assembly through hole and cooperates with the half-shaft gear. The locking bolt is sequentially passed through the shell and the locking tool to lock the locking tool.

3. The oil temperature detection assembly according to claim 2, characterized in that: The assembly through hole is a countersunk hole, and the locking fixture has a large-diameter end and a small-diameter end that are mutually adapted to the countersunk hole, and the small-diameter end has an external spline that is interconnected with the half-shaft gear.

4. The oil temperature detection assembly according to claim 2, characterized in that: The oil temperature detection component also includes a Bluetooth transmitter, which is electrically connected to the temperature sensor.

5. The oil temperature detection assembly according to claim 4, characterized in that: The oil temperature detection assembly also includes a connecting rod, a bearing and a bearing seat. One end of the connecting rod is fixedly connected to the straight shaft, and the other end of the connecting rod is sleeved with a bearing. The bearing is installed in the bearing seat, and the bearing seat is interference fit with the housing.

6. The oil temperature detection assembly according to claim 5, characterized in that: The connecting rod has a central hole, the wiring harness of the temperature sensor passes through the central hole, and the wiring harness is connected to the Bluetooth transmitter.

7. The oil temperature detection assembly according to claim 5 or 6, characterized in that: The connecting rod is threadedly connected to the straight shaft, and the thread engagement direction is opposite to the rotation direction of the straight shaft itself.

8. The oil temperature detection assembly according to claim 6, characterized in that: The straight shaft has an axial hole, the connecting rod is passed through the axial hole, and the connecting rod has an internal thread; a fixing bolt passes through the axial hole and engages with the internal thread, the connecting rod is fixedly connected to the straight shaft, and the inlet of the center hole is located on the side of the connecting rod.

9. The oil temperature detection assembly according to claim 5 or 6, characterized in that: The connecting rod comprises a plurality of split rod sections, a boss or a positioning ring is provided between two adjacent split rod sections, the free end of the split rod of the tail section is fixedly connected to the straight shaft, and the free end of the split rod of the first section is sleeved with the bearing.

10. The oil temperature detection assembly according to claim 5, characterized in that: The Bluetooth transmitter is fixedly mounted on the connecting rod.

11. According to the oil temperature detection component of claim 10, the base of the Bluetooth transmitter is a wedge-shaped block structure, which is embedded in the base through positioning bolts, and the Bluetooth transmitter is fixedly connected to the connecting rod.

12. The oil temperature detection assembly according to claim 5, characterized in that: A retaining spring is also arranged on the circumference of the connecting rod.

13. The oil temperature detection assembly according to claim 1, characterized in that: A groove is provided at the matching position of the straight shaft and the planetary gear, and the temperature sensor is installed in the groove.

14. A reducer, characterized in that: It comprises an oil temperature detection component as described in any one of claims 1-13.

Images