Oil-bath lubricated hub integrated powder metallurgy gear structure

Abstract

The utility model discloses an oil bath lubrication type hub integrated powder metallurgy gear structure, including hub shell, the inside setting of hub shell has installation mechanism, be provided with sealing mechanism on gear frame, can ensure that gear drive mechanism will not appear slack or vibration in the operation process through the installation mechanism set up in hub shell, is favorable to supplementary fixed, improves the stability of gear drive system, reduces the transmission precision decline problem caused by vibration, and the sealing mechanism set up in installation mechanism, effectively prevent the leakage of lubricating oil from the weak sealing, prevent the outside impurity from entering lubricating cavity.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical gear technology, specifically to an oil bath lubricated hub integrated powder metallurgy gear structure. Background Technology

[0002] Oil-bath lubricated hub integrated powder metallurgy gear structure is a mechanical structure that integrates the gear transmission mechanism inside the hub and achieves efficient and reliable operation through oil bath lubrication. It is widely used in electric vehicles, electric bicycles, low-speed special vehicles (such as AGVs, logistics vehicles, sanitation vehicles) and some industrial equipment, and has the advantages of compact structure, sufficient lubrication, long service life and low noise.

[0003] However, the connection between the hub housing and the gear transmission mechanism is usually loose, which can increase the complexity of assembly and cause the gears to loosen or vibrate during operation, affecting the transmission accuracy and equipment stability. At the same time, the sealing of the gear lubrication cavity cannot effectively prevent the leakage of lubricating oil, resulting in a decrease in lubrication effect. External impurities may also enter the lubrication cavity, affecting the normal operation of the gears.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an oil bath lubricated hub integrated powder metallurgy gear structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: An oil bath lubricated hub integrated powder metallurgy gear structure includes a hub shell, an installation mechanism inside the hub shell, a gear lubrication cavity inside the hub shell, a sealed bearing I on the hub shell, a connecting shaft inside the sealed bearing I, a gear I on the surface of the connecting shaft, multiple gear II meshing with the teeth of gear I, a gear ring meshing with the teeth of gear II, the surface of the gear ring connecting with the interior of the gear lubrication cavity, a gear carrier connected to gear II via a connecting rod, and a sealing mechanism on the gear carrier.

[0007] Furthermore, in order to better seal the gear lubrication cavity, the sealing mechanism includes a second sealing bearing on the gear frame, a sealing cover on the surface of the second sealing bearing, a sealing gasket on one side of the sealing cover, a sealing seat connected to one side of the sealing gasket, the sealing seat being located on one side of the hub housing, and multiple fixing screws connected to the sealing seat, with one end of the fixing screws connected to the sealing seat.

[0008] Furthermore, in order to better shield the second and first sealed bearings, multiple mounting slots are provided on the sealing cover and the hub housing. The shielding cover is snapped into the inside of the mounting slot. The shielding cover is positioned opposite the second and first sealed bearings, and one of the shielding covers is connected to the gear carrier.

[0009] Furthermore, in order to better replenish the lubricating oil, a lubrication filling hole is provided on the wheel hub shell, and a sealing screw is connected inside the lubrication filling hole.

[0010] Furthermore, in order to better guide the lubricating oil, multiple guide plates are provided on one side of the gear lubrication chamber.

[0011] Furthermore, to better assist lubrication, an oil slinger ring is provided on the surface of the gear carrier, with the oil slinger ring positioned opposite the guide plate.

[0012] The beneficial effects of this utility model are as follows: (1) The mounting mechanism installed on the hub housing can ensure that the gear transmission mechanism will not loosen or vibrate during operation, which is beneficial for auxiliary fixation, improving the stability of the gear transmission system, and reducing the problem of transmission accuracy reduction caused by vibration. The sealing mechanism installed on the mounting mechanism can effectively prevent lubricating oil from leaking from the weak sealing point and prevent external impurities from entering the lubrication cavity.

[0013] (2) The mounting groove and shielding cover set in the sealing cover and the hub housing can protect the sealing bearing 2 and the sealing bearing 1, and enhance the sealing effect. The guide plate set in the gear lubrication cavity can effectively guide the lubricating oil to the surface of each gear, ensure the lubricating oil is evenly distributed, and improve the lubrication effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an oil bath lubricated wheel hub integrated powder metallurgy gear structure according to an embodiment of the present utility model; Figure 2 yes Figure 1 A schematic diagram of the side structure; Figure 3 This is a schematic diagram of the mounting mechanism and sealing mechanism of an oil bath lubricated wheel hub integrated powder metallurgy gear structure according to an embodiment of the present invention. Figure 1 ; Figure 4This is a schematic diagram of the mounting mechanism and sealing mechanism of an oil bath lubricated wheel hub integrated powder metallurgy gear structure according to an embodiment of the present invention. Figure 2 .

[0016] In the picture: 1. Hub housing; 2. Mounting mechanism; 201. Gear lubrication chamber; 202. Sealed bearing one; 203. Connecting shaft; 204. Gear one; 205. Gear two; 206. Gear ring; 207. Gear carrier; 3. Sealing mechanism; 301. Sealed bearing two; 302. Sealing cover; 303. Sealing gasket; 304. Sealing seat; 305. Fixing screw; 4. Cover; 5. Lubrication filling hole; 6. Sealing screw; 7. Guide plate; 8. Oil slinger ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: like Figures 1-4 As shown, an oil bath lubricated wheel hub integrated powder metallurgy gear structure according to an embodiment of the present utility model includes a wheel hub shell 1, a lubrication filling hole 5 on the wheel hub shell 1, a sealing screw 6 connected inside the lubrication filling hole 5, and heat dissipation fins evenly distributed on the side of the wheel hub shell 1 during actual use for heat dissipation of lubricating oil and wheel hub shell 1. An installation mechanism 2 is provided inside the wheel hub shell 1. The installation mechanism 2 includes a gear lubrication cavity 201 inside the wheel hub shell 1 for storing lubricating oil. Six guide plates 7 are provided on one side inside the gear lubrication cavity 201 for assisting in guiding the lubricating oil. A sealed bearing 202 is provided on the hub housing 1. A connecting shaft 203 is connected inside the sealed bearing 202. A gear 204 is provided on the surface of the connecting shaft 203. Two gears 205 are meshed with the teeth of the gear 204. The number of gears 205 can be adjusted according to the actual situation. A gear ring 206 is meshed with the teeth of the gears 205. The gear ring 206, the gears 205 and the gear 204 are made by powder metallurgy. The surface of the gear ring 206 is connected to the inside of the gear lubrication cavity 201. A gear frame 207 is connected to the gears 205 by a connecting rod for supporting and fixing the gears 205. An oil slinger ring 8 is provided on the surface of the gear frame 207. The oil slinger ring 8 is positioned opposite to the guide plate 7.

[0019] Example 2: like Figures 3-4 As shown, according to an embodiment of the present invention, an oil bath lubricated wheel hub integrated powder metallurgy gear structure is provided with a sealing mechanism 3 on the gear frame 207. The sealing mechanism 3 includes a sealing bearing 301 on the gear frame 207, a sealing cover 302 on the surface of the sealing bearing 301, and a sealing gasket 303 on one side of the sealing cover 302 for sealing the sealing cover 302. The sealing gasket 303 is coated with a protective coating during actual use. The protective coating can be a corrosion-resistant coating, a wear-resistant coating, or a high and low temperature resistant coating. A sealing seat 304 is connected to one side of the sealing gasket 303. The sealing seat 304 is located on one side of the wheel hub housing 1. Four fixing screws 305 are connected to the sealing seat 304. The number of fixing screws 305 can be adjusted according to the actual situation. One end of the fixing screws 305 is connected to the sealing seat 304. The sealing cover 302 and the hub housing 1 have four mounting slots for installing the cover 4. The cover 4 is snapped into the inside of the mounting slot. The cover 4 is positioned opposite to the sealing bearing 301 and the sealing bearing 202. One of the cover 4 is connected to the gear carrier 207. Sealed bearing 201, sealed bearing 1202, shielding cover 4, protective coating, sealing cover 302, gear frame 207, sealing gasket 303, oil slinger ring 8, gear ring 206, gear 205, and gear 1204 are existing technologies and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0020] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0021] In summary, with the help of the above-mentioned technical solution of this utility model, when in use, the power is input through the connecting shaft 203, the connecting shaft 203 drives the gear 1 204 to rotate synchronously, the gear 1 204 meshes with multiple gears 205, driving the gears 205 to both rotate on their own axis and revolve around the connecting shaft 203, and the gears 205 mesh with the gear ring 206 fixed on the inner wall of the gear lubrication cavity 201, forming a planetary gear transmission structure under the support of the gear frame 207, so as to output the power smoothly; The gear lubrication chamber 201 stores lubricating oil, forming an oil bath environment. During the revolution of the gear carrier 207 with the second gear 205, the oil slinger ring 8 set on the surface of the gear carrier 207 rotates synchronously, stirring up the lubricating oil at the bottom and throwing it out at high speed. The thrown lubricating oil hits the guide plate 7 arranged inside the gear lubrication chamber 201, and then is evenly distributed along the surface of the guide plate 7 and flows back to each meshing tooth surface, realizing continuous lubrication and heat dissipation for the first gear 204, the second gear 205 and the gear ring 206. The second sealed bearing 301 supports the rotation of the gear carrier 207. The outer side of the second sealed bearing 301 is sequentially equipped with a sealing cover 302, a sealing gasket 303, and a sealing seat 304. The sealing seat 304 is fastened to one side of the hub housing 1 by fixing screws 305 to form a multi-stage seal. The shielding cover 4 is snapped into the mounting groove on the hub housing 1 and the sealing cover 302, corresponding to the positions of the first sealed bearing 202 and the second sealed bearing 301, respectively. One of the shielding covers 4 rotates synchronously with the gear carrier 207 to further improve the dynamic sealing effect. When it is necessary to add lubricating oil, it can be injected through the lubrication filling hole 5. After the operation is completed, tighten the sealing screw 6 to ensure that the gear lubrication cavity 201 is kept in a closed oil bath state.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil-bath lubricated hub-integrated powder metallurgy gear structure, comprising a hub shell (1), characterized in that, The hub housing (1) is provided with an installation mechanism (2). The installation mechanism (2) includes a gear lubrication chamber (201) inside the hub housing (1). A sealed bearing (202) is provided on the hub housing (1). A connecting shaft (203) is connected inside the sealed bearing (202). A gear (204) is provided on the surface of the connecting shaft (203). Multiple gears (205) are meshed with the teeth of the gears (204). A gear ring (206) is meshed with the teeth of the gears (205). The surface of the gear ring (206) is connected to the inside of the gear lubrication chamber (201). A gear carrier (207) is connected to the gears (205) through a connecting rod. A sealing mechanism (3) is provided on the gear carrier (207).

2. The oil bath lubricated hub integrated powder metallurgy gear structure according to claim 1, characterized in that, The sealing mechanism (3) includes a gear frame (207) on which a sealing bearing (301) is provided. A sealing cover (302) is provided on the surface of the sealing bearing (301). A sealing gasket (303) is provided on one side of the sealing cover (302). A sealing seat (304) is connected to one side of the sealing gasket (303). The sealing seat (304) is located on one side of the hub housing (1). A plurality of fixing screws (305) are connected to the sealing seat (304). One end of the fixing screw (305) is connected to the sealing seat (304).

3. The oil bath lubricated hub integrated powder metallurgy gear structure according to claim 2, characterized in that, The sealing cover (302) and the hub housing (1) are provided with multiple mounting slots. A cover (4) is snapped into the inside of the mounting slot. The cover (4) is positioned opposite to the second sealing bearing (301) and the first sealing bearing (202). One of the cover (4) is connected to the gear carrier (207).

4. The oil bath lubricated hub integrated powder metallurgy gear structure according to claim 3, characterized in that, The hub housing (1) has a lubrication filling hole (5), and a sealing screw (6) is connected inside the lubrication filling hole (5).

5. The oil bath lubricated hub integrated powder metallurgy gear structure according to claim 4, characterized in that, Multiple guide plates (7) are provided on one side of the inside of the gear lubrication chamber (201).

6. The oil bath lubricated hub integrated powder metallurgy gear structure according to claim 5, characterized in that, The surface of the gear carrier (207) is provided with an oil slinger ring (8), which is positioned opposite to the guide plate (7).

Images