A drive gear shaft with cooling channels

Abstract

The utility model relates to transmission device technical field, concretely is a kind of transmission gear shaft with cooling passage, it includes: shaft body, the one end of shaft body is provided with rotary disc, the surface of rotary disc is equipped with oil collecting groove, the inside of shaft body is equipped with outer circulation pipe and inner circulation pipe;The outside of rotary disc is provided with liquid storage warehouse, the side of liquid storage warehouse is equipped with cover, and it is equipped with sealing bearing between cover and shaft body;The other side of liquid storage warehouse is fixedly installed with cooling plate, the inside of cooling plate is equipped with snail groove, one end of snail groove is provided with return pipe, the other end of snail groove is provided with inflow pipe;The rotation of the shaft body is set to make cooling oil enter the inside of oil collecting groove, then enter outer circulation pipe by flow guide groove, cooling oil enters inner circulation pipe by outer circulation pipe, and it is returned to the one end of rotary disc by inner circulation pipe, the circulation of cooling oil in the inside of shaft body is realized, cooling of shaft body is more uniform, and the problem that external oil injection cooling cannot cover the whole heat source area of gear shaft is made up.

Description

Technical Field

[0001] This utility model relates to the field of transmission device technology, specifically to a transmission gear shaft with a cooling channel. Background Technology

[0002] Transmission gear shafts are core components in mechanical transmission systems, mainly used to transmit torque and rotational motion. They are commonly found in automotive gearboxes, industrial speed reducers, and other equipment. They are usually made of high-strength alloy steel and their surfaces are heat-treated to improve wear resistance and fatigue strength. Currently, the cooling of transmission gear shafts mainly relies on external lubrication systems, which use oil pumps to spray cooling oil onto the shaft surface in the gear meshing area, using the flow of oil to carry away heat. For example, in automotive transmissions, lubricating oil is collected by an oil collector and then sprayed onto the gear shaft surface through nozzles to achieve cooling and lubrication. However, external oil spray cooling often cannot cover all heat source areas of the gear shaft. Especially at high speeds, uneven heat dissipation can easily lead to local overheating, causing material annealing or thermal fatigue cracks. Summary of the Invention

[0003] The purpose of this invention is to provide a transmission gear shaft with a cooling channel to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A transmission gear shaft with a cooling channel, comprising: The shaft has a rotating disk at one end, an oil collection groove on the surface of the rotating disk, and an external circulation pipe and an internal circulation pipe inside the shaft. A liquid storage tank is provided on the outer side of the rotating disk, a cover plate is installed on one side of the liquid storage tank, and a sealed bearing is provided between the cover plate and the shaft. A cooling plate is fixedly installed on the other side of the liquid storage tank. The cooling plate has a spiral groove inside. A return pipe is provided at one end of the spiral groove, and an inlet pipe is provided at the other end of the spiral groove.

[0005] Preferably, a gear is fixedly mounted on the surface of the shaft.

[0006] Preferably, the rotating disk is fixedly connected to the shaft.

[0007] Preferably, the external circulation pipe is connected to the oil collection tank, and the end of the external circulation pipe away from the rotating disk is connected to the internal circulation pipe, and the internal circulation pipe passes through the rotating disk; Both the external circulation pipe and the internal circulation pipe are prefabricated pipes, formed by casting and installed inside the shaft 1.

[0008] Preferably, a liquid storage space is provided between the inner side wall of the liquid storage tank and the side of the shaft, and an installation bracket is fixedly connected to the outer side of the liquid storage tank. The liquid storage tank is rotatably connected to the shaft through the cover plate and the sealing bearing.

[0009] Preferably, heat dissipation fins are fixedly provided on the surface of the cooling plate.

[0010] Preferably, the reflux pipe extends into the interior of the liquid storage tank, and the volute is connected to the interior of the liquid storage tank through the reflux pipe.

[0011] Preferably, the inlet pipe is inserted into one end of the inner circulation pipe, and a rotary oil seal is provided between the end of the inlet pipe and the inner wall of the inner circulation pipe, and the volute groove is connected to the inner circulation pipe through the inlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By rotating the shaft, the cooling oil enters the oil collection tank and then flows into the external circulation pipe through the guide channel. The cooling oil then flows into the internal circulation pipe through the external circulation pipe and back to one end of the rotating disk through the internal circulation pipe, thus realizing the circulation of cooling oil inside the shaft. This results in more uniform cooling of the shaft and compensates for the problem that external oil spraying cannot cover all heat source areas of the gear shaft.

[0013] 2. By setting up a volute, the cooling oil flows through the inner circulation pipe and then enters the inside of the volute through the inlet pipe. It then flows back to the inside of the storage tank through the return pipe, thus realizing the automatic circulation of the cooling oil without the need for additional power. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the rotating disk of this utility model; Figure 4 This is a schematic diagram of the internal structure of the cooling plate of this utility model.

[0015] In the figure: Shaft 1, Rotary disk 11, Oil collection groove 12, Guide groove 13, External circulation pipe 14, Internal circulation pipe 15, Gear 2, Liquid storage tank 3, Mounting bracket 31, Cover plate 32, Sealed bearing 33, Cooling plate 4, Heat dissipation fins 41, Spiral groove 42, Return pipe 43, Inlet pipe 44, Rotary oil seal 45. Detailed Implementation

[0016] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0017] Please see the appendix Figure 1 To be continued Figure 4 As shown, this utility model provides a transmission gear shaft with a cooling channel, comprising: Shaft 1, gear 2 is fixedly mounted on the surface of shaft 1, a rotating disk 11 is provided at one end of shaft 1, rotating disk 11 is fixedly connected to shaft 1, oil collection groove 12 is opened on the surface of rotating disk 11, external circulation pipe 14 and internal circulation pipe 15 are opened inside shaft 1, external circulation pipe 14 is connected to oil collection groove 12, and the end of external circulation pipe 14 away from rotating disk 11 is connected to internal circulation pipe 15, and internal circulation pipe 15 passes through rotating disk 11; Both the external circulation pipe 14 and the internal circulation pipe 15 are prefabricated pipes, formed by casting process and inserted into the interior of the shaft body 1; A liquid storage tank 3 is provided on the outer side of the rotating disk 11. A cover plate 32 is installed on one side of the liquid storage tank 3. A sealed bearing 33 is provided between the cover plate 32 and the shaft 1. A liquid storage space is provided between the inner side wall of the liquid storage tank 3 and the side of the shaft 1. An installation bracket 31 is fixedly connected to the outer side of the liquid storage tank 3. The liquid storage tank 3 is rotatably connected to the shaft 1 through the cover plate 32 and the sealed bearing 33. A cooling plate 4 is fixedly installed on the other side of the liquid storage tank 3. Heat dissipation fins 41 are fixedly provided on the surface of the cooling plate 4. A volute groove 42 is opened inside the cooling plate 4. A return pipe 43 is provided at one end of the volute groove 42. The return pipe 43 extends into the interior of the liquid storage tank 3. The volute groove 42 is connected to the interior of the liquid storage tank 3 through the return pipe 43. An inlet pipe 44 is provided at the other end of the volute groove 42. The inlet pipe 44 is inserted into one end of the inner circulation pipe 15. A rotary oil seal 45 is provided between the end of the inlet pipe 44 and the inner wall of the inner circulation pipe 15. The volute groove 42 is connected to the inner circulation pipe 15 through the inlet pipe 44.

[0018] This utility model proposes a transmission gear shaft with a cooling channel. In use, the liquid storage tank 3 is fixedly installed in a designated position by the mounting bracket 31, and the other end of the shaft 1 is connected to the drive mechanism. When the shaft 1 rotates, it drives the rotating disk 11 to rotate inside the liquid storage tank 3, so that the cooling oil inside the sealed bearing 33 is collected obliquely into the oil collection groove 12 and then enters the outer circulation pipe 14 through the guide groove 13. The cooling oil enters the inner circulation pipe 15 through the outer circulation pipe 14 and then flows back to one end of the rotating disk 11 through the inner circulation pipe 15, realizing the circulation of cooling oil inside the shaft 1. The cooling of the shaft 1 is more uniform, which makes up for the problem that external oil spray cooling cannot cover the entire heat source area of ​​the gear shaft.

[0019] As a further improvement of this utility model, by setting a volute 42, the cooling oil enters the interior of the volute 42 through the inlet pipe 44 after flowing through the inner circulation pipe 15, and then flows back to the interior of the liquid storage tank 3 through the return pipe 43, thereby realizing the automatic circulation of the cooling oil without the need for additional power.

[0020] As a further improvement of this utility model, by setting heat dissipation fins 41 to expand the heat dissipation area, combined with external oil spray cooling, the gear shaft can be cooled faster and more effectively.

[0021] Working principle: The transmission gear shaft with cooling channel proposed in this utility model is used by fixing the liquid storage tank 3 in a designated position through the mounting bracket 31. The other end of the shaft 1 is connected to the drive mechanism. When the shaft 1 rotates, it drives the rotating disk 11 to rotate inside the liquid storage tank 3. The cooling oil inside the sealed bearing 33 is collected obliquely through the oil collection groove 12 and enters the oil collection groove 12. Then, it enters the outer circulation pipe 14 through the guide groove 13. The cooling oil enters the inner circulation pipe 15 through the outer circulation pipe 14 and flows back to one end of the rotating disk 11 through the inner circulation pipe 15, realizing the circulation of cooling oil inside the shaft 1. After flowing through the inner circulation pipe 15, the cooling oil enters the volute groove 42 through the inlet pipe 44 and flows back to the liquid storage tank 3 through the return pipe 43, thereby realizing the automatic circulation of cooling oil.

[0022] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transmission gear shaft with a cooling channel, characterized in that, include: Shaft (1), one end of which is provided with a rotating disk (11), the surface of which is provided with an oil collection groove (12), and the inside of which is provided with an external circulation pipe (14) and an internal circulation pipe (15). A liquid storage tank (3) is provided on the outside of the rotating disk (11), and a cover plate (32) is installed on one side of the liquid storage tank (3). A sealed bearing (33) is provided between the cover plate (32) and the shaft (1). A cooling plate (4) is fixedly installed on the other side of the liquid storage tank (3). A volute groove (42) is provided inside the cooling plate (4). A return pipe (43) is provided at one end of the volute groove (42), and an inlet pipe (44) is provided at the other end of the volute groove (42).

2. The transmission gear shaft with cooling channel according to claim 1, characterized in that, A gear (2) is fixedly mounted on the surface of the shaft (1).

3. The transmission gear shaft with cooling channel according to claim 2, characterized in that, The rotating disk (11) is fixedly connected to the shaft (1).

4. The transmission gear shaft with cooling channel according to claim 3, characterized in that, The external circulation pipe (14) is connected to the oil collection tank (12), and the end of the external circulation pipe (14) away from the rotating disk (11) is connected to the internal circulation pipe (15), and the internal circulation pipe (15) passes through the rotating disk (11).

5. The transmission gear shaft with cooling channel according to claim 4, characterized in that, A liquid storage space is provided between the inner side wall of the liquid storage tank (3) and the side of the shaft (1). An installation bracket (31) is fixedly connected to the outer side of the liquid storage tank (3). The liquid storage tank (3) is rotatably connected to the shaft (1) through the cover plate (32) and the sealed bearing (33).

6. The transmission gear shaft with cooling channel according to claim 5, characterized in that, The surface of the cooling plate (4) is fixedly provided with heat dissipation fins (41).

7. The transmission gear shaft with cooling channel according to claim 6, characterized in that, The return pipe (43) extends into the interior of the liquid storage tank (3), and the volute (42) is connected to the interior of the liquid storage tank (3) through the return pipe (43).

8. The transmission gear shaft with cooling channel according to claim 7, characterized in that, The inlet pipe (44) is inserted into one end of the inner circulation pipe (15), and a rotary oil seal (45) is provided between the end of the inlet pipe (44) and the inner wall of the inner circulation pipe (15). The volute groove (42) is connected to the inner circulation pipe (15) through the inlet pipe (44).

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