Main shaft cooling structure, gearbox and automobile

Abstract

The utility model provides a main shaft cooling structure, a gearbox and an automobile, and relates to the technical field of automobile power systems. The main shaft cooling structure comprises a shaft sleeve, a main shaft, a conveying part and a drainage part, the main shaft is rotationally connected in the shaft sleeve, a flowing space for cooling oil to flow is formed between the shaft sleeve and the main shaft, the conveying part and the drainage part are arranged on the outer wall of the main shaft, and the conveying part is configured in a manner that when the cooling oil flows to the end, close to a motor, in the flowing space, the cooling oil flows out. And the flow guiding part is used for guiding the cooling oil, close to the end part of the motor, in the flowing space into the conveying part. According to the spindle cooling structure, the gearbox and the automobile, the spindle is lubricated and cooled, and the situation that the gearbox is damaged due to overheating of the spindle is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of automobile power systems, and in particular to a spindle cooling structure, a gearbox and an automobile. Background Art

[0002] The gearbox is a component in the vehicle's transmission system that enables the engine or electric motor to operate within the optimal torque and power output range at different speeds by changing the gear ratio.

[0003] The gearbox of the related technology includes a housing, a sleeve, a main shaft and a gear transmission assembly. The sleeve is inserted into the middle of the housing, the main shaft is rotated in the sleeve, and the gear transmission assembly is arranged between the housing and the main shaft. The gear transmission assembly can change the speed and torque of the main shaft, thereby realizing the functions of speed change and torque change. One side of the housing drives the main shaft to rotate through an engine or electric motor.

[0004] However, during the rotation of the main shaft in the sleeve, factors such as the external high temperature environment or the friction between the main shaft and the sleeve will cause the main shaft to heat up. If the main shaft is overheated, the operation of the entire gearbox will be affected. Utility Model Content

[0005] The present application provides a spindle cooling structure, a gearbox and a vehicle, which are used to solve the technical problem in the related art that the spindle generates heat due to friction or other factors, which affects the operation of the gearbox.

[0006] In the first aspect, the present application provides a spindle cooling structure, comprising a sleeve, a spindle, a conveying portion and a drainage portion, the spindle being rotatably connected within the sleeve, a flow space for cooling oil to flow between the sleeve and the spindle, the conveying portion and the drainage portion being both arranged on the outer wall of the spindle, the conveying portion being configured to convey the cooling oil in a direction away from the motor when the cooling oil flows to the end of the flow space close to the motor, and the drainage portion being used to drain the cooling oil in the flow space close to the end of the motor toward the conveying portion.

[0007] In some embodiments, the delivery portion includes a delivery groove, which is provided on the outer wall of the main shaft and is located close to the motor. The delivery groove is used to deliver the cooling oil in a direction away from the motor when the main shaft rotates.

[0008] In some embodiments, the conveying trough is arranged in a spiral shape.

[0009] In some embodiments, a plurality of conveying grooves are provided, and the conveying grooves are evenly distributed along the circumference of the main shaft.

[0010] In some embodiments, the drainage portion includes a drainage groove, which is provided on an outer wall of the main shaft, one end of the drainage groove is connected to the conveying portion, and the other end of the drainage groove extends toward a direction close to the motor.

[0011] In some embodiments, the drainage groove is arranged on the main shaft along the axial direction of the main shaft.

[0012] In some embodiments, a plurality of the drainage grooves are provided, and the plurality of the drainage grooves are evenly distributed along the axial direction of the main shaft.

[0013] In a second aspect, the present application provides a gearbox comprising a housing and a spindle cooling structure disposed in the housing.

[0014] In some embodiments, a bearing is further included, which is arranged between the housing and the main shaft, the bearing is located close to the motor, and one side of the bearing is connected to the flow space so that the cooling oil in the flow space lubricates the bearing.

[0015] In a third aspect, the present application provides an automobile, comprising a vehicle body and the spindle cooling structure arranged on the vehicle body.

[0016] The present application provides a spindle cooling structure, a gearbox and a car. The spindle cooling structure provided by the present application adopts the setting of a flow space so that the cooling oil in the shell for cooling the gear transmission assembly can enter the flow space, thereby allowing the cooling oil to cool the spindle and preventing the spindle from affecting the operation of the entire transmission due to excessive temperature; by adopting the setting of a conveying part, the cooling oil flowing toward the motor in the flow space can be conveyed in a direction away from the motor, thereby preventing the cooling oil with a higher temperature in the flow space from entering the interior of the motor and affecting the motor, indirectly improving the stability of the motor during use; by adopting the setting of a diversion part, the cooling oil near the end of the motor in the flow space can be diverted toward the conveying part, preventing the cooling oil from accumulating near the end of the motor in the flow space, thereby further conveying the cooling oil in the flow space in a direction away from the motor, thereby further preventing the cooling oil from entering the motor and affecting the motor, indirectly improving the conveying efficiency of the conveying part for the cooling oil near the end of the motor in the flow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 A schematic diagram of a partial structure of a spindle cooling structure provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 Schematic diagram of part of the structure of the main shaft;

[0020] Figure 3 A schematic diagram of the structure of a transmission provided in an embodiment of the present application;

[0021] Figure 4 for Figure 3 A schematic diagram of a half-section structure;

[0022] Figure 5 for Figure 4 Enlarged view of part A in .

[0023] Description of reference numerals:

[0024] 100, shaft sleeve;

[0025] 200, spindle;

[0026] 300, conveying unit; 310, conveying trough;

[0027] 400, drainage portion; 410, drainage trough;

[0028] 500, Flow Space;

[0029] 600, housing;

[0030] 700, bearing; 710, first annular seat; 720, second annular seat; 730, first annular groove; 740, second annular groove; ball, 750.

[0031] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0033] As described in the background technology, the gearbox of the related technology includes a housing, a sleeve, a main shaft and a gear transmission assembly. The sleeve is inserted into the middle of the housing, the main shaft is rotated in the sleeve, and the gear transmission assembly is arranged between the housing and the main shaft. The gear transmission assembly can change the speed and torque of the main shaft, thereby realizing the functions of speed change and torque change. One side of the housing drives the main shaft to rotate through an engine or an electric motor.

[0034] However, the main shaft will generate heat during the rotation process in the sleeve. For example, when the car is driving in a high-temperature environment, or there is friction between the main shaft and the sleeve during rotation, or the driver's frequent high-load operation or improper driving habits, such as long-term drag driving, may cause the transmission to overload and the main shaft to heat up. All of the above factors will cause the main shaft to overheat. If the main shaft overheats, it will affect the operation of the entire transmission.

[0035] In response to the above technical problems, the embodiments of the present application provide a spindle cooling structure, a gearbox and a car, wherein the cooling oil in the transmission housing can enter the flow space along the end of the flow space away from the motor, so that the cooling oil can lubricate and cool the spindle and the sleeve, thereby preventing the spindle from overheating and affecting the operation of the entire transmission; and when the spindle rotates, the cooling oil flowing toward the motor in the flow space can be drained into the delivery groove through the drainage groove, and transported in the direction away from the motor through the spiral delivery groove, thereby preventing the cooling oil from accumulating near the motor in the flow space, thereby improving the cooling and lubricating effect of the cooling oil on the spindle, and preventing the cooling oil in the flow space from flowing into the motor and affecting the use of the motor; the cooling oil in the flow space can lubricate and cool the bearings, thereby preventing the bearings from being damaged by overheating.

[0036] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0037] Combine Figure 1 and Figure 2 A spindle cooling structure includes a sleeve 100, a spindle 200, a conveying portion 300 and a drainage portion 400. The spindle 200 is rotatably connected to the sleeve 100. A flow space 500 for cooling oil to flow is provided between the sleeve 100 and the spindle 200. The conveying portion 300 and the drainage portion 400 are both arranged on the outer wall of the spindle 200. The conveying portion 300 is configured to convey the cooling oil in a direction away from the motor when the cooling oil flows to the end of the flow space 500 close to the motor. The drainage portion 400 is used to drain the cooling oil in the flow space 500 close to the end of the motor toward the conveying portion 300.

[0038] In this embodiment, the length of the main shaft 200 is greater than the length of the main shaft 200, the main shaft 200 is passed through and rotatably connected to the housing 600 of the transmission, and the sleeve 100 is located in the housing 600; the main shaft 200 and the sleeve 100 are coaxially arranged, the flow space 500 is arranged in an annular shape, and the annular flow space 500 is arranged along the length direction of the sleeve 100; the main shaft 200 can be the main shaft 200 of the transmission, or it can be the main shaft 200 of other equipment that requires lubrication and cooling, such as a reducer, differential or reduction box.

[0039] By adopting the above technical solution, by adopting the setting of the flow space 500, the cooling oil in the housing 600 used to cool the gear transmission assembly can enter the flow space 500, so that the cooling oil cools the main shaft 200, preventing the main shaft 200 from affecting the operation of the entire transmission due to excessive temperature; by adopting the setting of the delivery portion 300, the cooling oil flowing toward the motor in the flow space 500 can be delivered in a direction away from the motor, thereby preventing the high-temperature cooling oil in the flow space 500 from entering the interior of the motor and affecting the motor, indirectly improving the stability of the motor during use; by adopting the setting of the diversion portion 400, the cooling oil near the end of the motor in the flow space 500 can be diverted into the delivery portion 300, preventing the cooling oil from accumulating at the end of the motor in the flow space 500, thereby further delivering the cooling oil in the flow space 500 in a direction away from the motor, thereby further preventing the cooling oil from entering the motor and affecting the motor, and indirectly improving the delivery efficiency of the delivery portion 300 for the cooling oil near the end of the motor in the flow space 500.

[0040] Combine Figure 1 and Figure 2 The conveying portion 300 includes a conveying groove 310, which is arranged on the outer wall of the main shaft 200 and is located near the motor. The conveying groove 310 is used to convey the cooling oil in a direction away from the motor when the main shaft 200 rotates.

[0041] In this embodiment, the cross-section of the delivery groove 310 is set to be arc-shaped. By adopting the delivery groove 310 with an arc-shaped cross-section, the cooling oil is facilitated to flow in the delivery groove 310, thereby indirectly improving the delivery effect of the delivery groove 310 on the cooling oil; in other embodiments, the cross-section of the delivery groove 310 can be set to other shapes, such as a rectangle; in this embodiment, the width of the delivery groove 310 along the axial direction of the main shaft 200 is smaller than the axial width of the main shaft 200; the width of the delivery groove 310 along the axial direction of the main shaft 200 can be adaptively adjusted as needed.

[0042] By adopting the above technical solution and setting up the delivery groove 310, the cooling oil in the flow space 500 can enter the delivery groove 310, and the cooling oil is transported in the direction away from the motor while the main shaft 200 rotates. By adopting the setting up of the delivery groove 310, its structure is simple, which facilitates the production of the main shaft 200 and the delivery groove 310 and does not affect the performance of the main shaft 200 itself; by setting up the delivery groove 310 in a position close to the motor, there is no need to set up the delivery groove 310 on the entire main shaft 200, which further facilitates the production of the main shaft 200 and the delivery groove 310.

[0043] Combine Figure 1 and Figure 2 , the conveying trough 310 is arranged in a spiral shape.

[0044] In this embodiment, the delivery groove 310 is arranged in a unidirectional spiral shape; in other embodiments, the delivery groove 310 can also be arranged in a bidirectional spiral shape, so that the cooling oil can be output along both ends of the bidirectional spiral delivery groove 310.

[0045] By adopting the above technical solution, by setting the conveying groove 310 to be spiral, the main shaft 200 can achieve the effect of spiral conveying the cooling oil through the spiral conveying groove 310 when rotating, thereby further improving the conveying efficiency of the cooling oil and further preventing the cooling oil from accumulating in the flow space 500 near the end of the motor.

[0046] Combine Figure 1 and Figure 2 There are multiple conveying grooves 310, and each conveying groove 310 is evenly distributed along the circumference of the main shaft 200.

[0047] In this embodiment, one end of the multiple conveying grooves 310 is located on the same circumference of the main shaft 200, and the other end of the multiple conveying grooves 310 is located on the same other circumference of the main shaft 200, and the lengths of the multiple conveying grooves 310 on the main shaft 200 are the same; in other embodiments, one end of the multiple conveying grooves 310 can be distributed in sequence along the axial direction of the main shaft 200, or the other end of the multiple conveying grooves 310 can be distributed in sequence along the axial direction of the main shaft 200, or the lengths of the multiple conveying grooves 310 on the main shaft 200 can be increased in sequence; in this embodiment, six conveying grooves 310 are provided; in other embodiments, the number of conveying grooves 310 can be adaptively adjusted according to the specifications of the main shaft 200.

[0048] By adopting the above technical solution, by setting up multiple conveying grooves 310, the multiple conveying grooves 310 can further improve the conveying efficiency of the cooling oil in the flow space 500, thereby further preventing part of the cooling oil from entering the interior of the motor along the flow space 500, and further preventing the cooling oil from accumulating near the end of the motor in the flow space 500.

[0049] Combine Figure 1 and Figure 2 The drainage portion 400 includes a drainage groove 410 , which is provided on the outer wall of the main shaft 200 . One end of the drainage groove 410 is connected to the conveying portion 300 , and the other end extends toward a direction close to the motor.

[0050] In this embodiment, one end of the drainage groove 410 is connected to one end of the conveying groove 310, and there is a distance between the other end of the drainage groove 410 and the end of the main shaft 200 close to the motor. The size of the distance determines the position of the drainage groove 410, and the size of the distance can be adaptively adjusted as needed; in other embodiments, one end of the drainage groove 410 can be connected to any position of the conveying groove 310; or the other end of the drainage groove 410 can be extended to the end of the main shaft 200, thereby increasing the drainage area of ​​the drainage groove 410.

[0051] By adopting the above technical solution and setting the drainage groove 410, the cooling oil at the end near the motor in the flow space 500 can enter the conveying groove 310 along the drainage groove 410, and the cooling oil is conveyed toward the conveying groove 310 while the main shaft 200 rotates. By adopting the setting of the drainage groove 410, its structure is simple, which is convenient for the production of the main shaft 200, the drainage groove 410 and the conveying groove 310, and will not affect the performance of the main shaft 200 itself; by connecting one end of the drainage groove 410 with the conveying part 300 and extending the other end toward the direction close to the motor, there is no need to set the drainage groove 410 on the entire main shaft 200, which further facilitates the production of the main shaft 200, the drainage groove 410 and the conveying groove 310.

[0052] Combine Figure 1 and Figure 2 The drainage groove 410 is arranged on the main shaft 200 along the axial direction of the main shaft 200 .

[0053] In this embodiment, the cross-section of the drainage groove 410 is set to be arc-shaped, and the arc-shaped drainage groove 410 has the same shape as the arc-shaped delivery groove 310, thereby improving the smoothness of the cooling oil flowing from the drainage groove 410 to the delivery groove 310; in other embodiments, the cross-section of the drainage groove 410 can be adaptively adjusted according to the cross-sectional shape of the delivery groove 310, for example, the cross-section of the drainage groove 410 is set to be rectangular; the drainage groove 410 can also be tilted and set on the main shaft 200.

[0054] By adopting the above-mentioned technical solution, by arranging the drainage groove 410 on the main shaft 200 along the axial direction of the main shaft 200, the cooling oil in the flow space 500 can enter the spiral conveying groove 310 along the drainage groove 410, thereby further improving the transportation efficiency of the cooling oil close to the motor in the flow space 500 toward the direction away from the motor; and the drainage groove 410 is arranged axially on the main shaft 200, which further facilitates the processing of the drainage groove 410.

[0055] Combine Figure 1 and Figure 2 A plurality of drainage grooves 410 are provided, and the plurality of drainage grooves 410 are evenly distributed along the axial direction of the main shaft 200 .

[0056] In this embodiment, six drainage grooves 410 are provided, and the six drainage grooves 410 are arranged in a one-to-one correspondence with the six conveying grooves 310; the ends of the six drainage grooves 410 away from the conveying grooves 310 are on the same circumference of the main shaft 200; in other embodiments, one drainage groove 410 can also be connected to multiple conveying grooves 310 at the same time; or any number of drainage grooves 410 can be connected to multiple conveying grooves 310 of different numbers; or the ends of the drainage grooves 410 away from the conveying grooves 310 can be arranged in sequence along the length direction of the main shaft 200.

[0057] By adopting the above technical solution and providing a plurality of drainage grooves 410 , the drainage effect of the cooling oil in the flow space 500 is further improved, thereby indirectly improving the cooling oil conveying efficiency of the plurality of conveying grooves 310 .

[0058] Combine Figures 3 to 5 , a gearbox includes a housing 600 and a spindle cooling structure of any of the above embodiments arranged in the housing 600.

[0059] The spindle cooling structure has been described in detail in the above embodiments and will not be described in detail here.

[0060] Combine Figures 3 to 5 The gearbox also includes a bearing 700, which is arranged between the housing 600 and the main shaft 200. The bearing 700 is located near the motor, and one side of the bearing 700 is connected to the flow space 500 so that the cooling oil in the flow space 500 lubricates the bearing 700.

[0061] In this embodiment, the bearing 700 includes a first annular seat 710, a second annular seat 720, a first annular groove 730, a second annular groove 740 and a plurality of balls 750; the first annular seat 710 is arranged along the circumference of the shell 600, the second annular seat 720 is arranged along the circumference of the main shaft 200, the first annular seat 710 and the second annular seat 720 are arranged opposite to each other, the first annular groove 730 is arranged along the circumference of the first annular seat 710, the second annular groove 740 is arranged along the circumference of the second annular seat 720, and the plurality of balls 750 are simultaneously embedded and rotatably connected in the first annular groove 730 and the second annular groove 740; by adopting the setting of the first annular groove 730 and the second annular groove 740, the balls 750 can be limited.

[0062] Combine Figures 3 to 5 In this embodiment, the bearing 700 can be replaced by other types of bearings such as roller bearings.

[0063] By adopting the above technical solution, by connecting one side of the bearing 700 with the flow space 500, the cooling oil in the flow space 500 can cool the bearing 700 and the main shaft 200 at the same time, preventing the friction between the main shaft 200 and the bearing 700 from causing heat damage to the bearing 700, thereby indirectly extending the service life of the bearing 700.

[0064] An automobile is characterized by comprising a vehicle body and a spindle cooling structure according to any one of the above embodiments arranged on the vehicle body.

[0065] The spindle cooling structure has been described in detail in the above embodiments and will not be described in detail here.

[0066] The cooling oil in the transmission housing 600 can enter the flow space 500 along the end of the flow space 500 away from the motor, so that the cooling oil can lubricate and cool the main shaft 200 and the sleeve 100, preventing the main shaft 200 from overheating and affecting the operation of the entire transmission; and when the main shaft 200 rotates, the cooling oil flowing toward the motor in the flow space 500 can be drained into the delivery groove 310 through the drainage groove 410, and transported in the direction away from the motor through the spiral delivery groove 310, preventing the cooling oil from accumulating near the motor in the flow space 500, thereby improving the cooling and lubricating effect of the cooling oil on the main shaft 200, and preventing the cooling oil in the flow space 500 from flowing into the motor and affecting the use of the motor; the cooling oil in the flow space 500 can lubricate and cool the bearing 700, preventing the bearing 700 from overheating and damage.

[0067] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0068] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A spindle cooling structure, characterized in that: It includes a sleeve, a main shaft, a conveying part and a drainage part. The main shaft is rotatably connected to the sleeve. There is a flow space for cooling oil to flow between the sleeve and the main shaft. The conveying part and the drainage part are both arranged on the outer wall of the main shaft. When the cooling oil flows to the end near the motor in the flow space, the conveying part is configured to convey the cooling oil in a direction away from the motor. The drainage part is used to drain the cooling oil in the flow space near the end of the motor toward the conveying part.

2. The spindle cooling structure according to claim 1, characterized in that: The conveying portion includes a conveying groove, which is provided on the outer wall of the main shaft and is located near the motor. The conveying groove is used to convey the cooling oil in a direction away from the motor when the main shaft rotates.

3. The spindle cooling structure according to claim 2, characterized in that: The conveying trough is arranged in a spiral shape.

4. The spindle cooling structure according to claim 2, characterized in that: There are multiple conveying grooves, and the conveying grooves are evenly distributed along the circumference of the main shaft.

5. The spindle cooling structure according to any one of claims 1 to 4, characterized in that: The drainage portion includes a drainage groove, which is arranged on the outer wall of the main shaft. One end of the drainage groove is communicated with the conveying portion, and the other end extends toward a direction close to the motor.

6. The spindle cooling structure according to claim 5, characterized in that: The drainage groove is arranged on the main shaft along the axial direction of the main shaft.

7. The spindle cooling structure according to claim 6, characterized in that: There are multiple drainage grooves, and the multiple drainage grooves are evenly distributed along the axial direction of the main shaft.

8. A gearbox, characterized in that: The invention comprises a shell and a spindle cooling structure according to any one of claims 1 to 7 arranged in the shell.

9. The gearbox according to claim 8, characterized in that The invention also includes a bearing, which is arranged between the housing and the main shaft, and is located near the motor. One side of the bearing is connected to the flow space so that the cooling oil in the flow space lubricates the bearing.

10. An automobile, characterized in that: The vehicle comprises a vehicle body and a spindle cooling structure according to any one of claims 1 to 7, which is arranged on the vehicle body.

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