Efficient lubricating electric automobile gearbox

Abstract

The utility model discloses an efficient lubrication electric automobile gearbox, relates to the field of gearboxes, and aims to solve the problems that lubricating oil in the gearbox cannot enter a bearing chamber in the use process to form circulating lubrication, so that a bearing of the gearbox cannot be fully lubricated, and the service life of the gearbox is prolonged. The gearbox comprises a box body, a left bearing cavity is formed in the left side of the interior of the box body, a right bearing cavity is formed in the right side of the interior of the box body, the left bearing cavity is communicated with a left oil bin, and the right bearing cavity is communicated with a right oil bin. A special-shaped oil receiving plate is fixedly connected to the upper portion of the box body, the two ends of the special-shaped oil receiving plate are communicated with the left oil bin and the right oil bin, and a through hole is formed in the side edge of the special-shaped oil receiving plate. The special-shaped oil receiving plate has the advantages that splashing lubricating oil is recycled through the special-shaped oil receiving plate, the lubricating effect is fully played, and stable work in the gearbox is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a high-efficiency lubricating electric vehicle gearbox. Background Art

[0002] With the rapid development of electric vehicle technology, the performance and reliability of the gearbox, as a key component of the electric vehicle transmission system, directly affect the overall performance of the vehicle. However, the existing electric vehicle gearbox faces a common problem during high-speed operation. During high-speed driving or frequent acceleration and deceleration of electric vehicles, the high-speed rotating parts inside the gearbox can splash the lubricating oil to lubricate the bearings. The traditional gearbox design only allows the lubricating oil to lubricate from one end of the bearing and cannot enter the bearing chamber to form a circulating lubrication, which will result in insufficient lubrication. As a result, the bearings operate without sufficient lubrication, increasing friction, rising temperatures, and accelerating the wear of the bearing materials. The worn bearing clearance increases, the precision decreases, and eventually causes the bearing to fail. In severe cases, it may cause damage to the entire gearbox; bearing failure not only affects the transmission efficiency and stability of the gearbox, but may also cause abnormal noise, vibration and other problems. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-efficiency lubricated electric vehicle gearbox. Through this design, the problem that the lubricating oil in the gearbox can enter the interior of the bearing chamber during operation and then flow out through the gaps of the bearing balls is effectively solved, thereby forming a circulating lubrication so that the bearings are fully lubricated, avoiding the problem of bearing failure or even gearbox damage caused by insufficient lubrication.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: the utility model includes a box body, a left bearing cavity is provided on the left side of the box body, a right bearing cavity is provided on the right side of the box body, the left bearing cavity is connected to a left oil tank, the right bearing cavity is connected to a right oil tank, a special-shaped oil receiving plate is fixedly connected to the top of the box body, both ends of the special-shaped oil receiving plate are connected to the left oil tank and the right oil tank, and a through hole is provided on the side of the special-shaped oil receiving plate.

[0005] Preferably, the special-shaped oil receiving plate is a V-shaped or U-shaped structure, and the special-shaped oil receiving plate cooperates with the inner wall of the box body to form an inner cavity for the movement of lubricating oil.

[0006] Preferably, the left oil tank includes a first oil groove, a second oil groove and a third oil groove, the first oil groove is connected to the special-shaped oil receiving plate, a first oil channel is connected between the first oil groove and the left bearing cavity, a second oil channel is connected to the second oil groove and the left bearing cavity, the third oil groove is located on the side of the left bearing cavity, a third oil channel is connected between the third oil groove and the left bearing cavity, and a first oil receiving plate is provided on the side of the third oil channel.

[0007] Preferably, the right oil tank includes a fourth oil groove, and a fourth oil channel is connected between the fourth oil groove and the right bearing cavity.

[0008] Preferably, a box cover is provided at the left end of the box body, the box cover and the box body are fixedly connected by bolts, the left bearing cavity is located on the box cover, and a second oil receiving plate that is connected to the special-shaped oil receiving plate is provided on the box cover.

[0009] Preferably, a fifth oil passage is provided on the side of the left oil tank and the side of the right oil tank.

[0010] Compared with the prior art, the utility model has the following outstanding advantages:

[0011] The utility model provides a special-shaped oil receiving plate in the gearbox, through which splashed lubricating oil is collected, and the collected lubricating oil flows back to the left bearing cavity and the right bearing cavity through the two ends of the special-shaped oil receiving plate, and the lubricating oil entering the left bearing cavity and the right bearing cavity flows back to the gearbox through the rollers of the bearings, so that the lubricating oil is fully utilized, the service life of the gearbox bearing is extended, and the maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0013] Figure 2 This is a schematic diagram of the left inner cavity structure of Example 1 of the utility model.

[0014] Figure 3 This is a schematic diagram of the inner cavity structure on the right side of Example 1 of the utility model.

[0015] Figure 4 It is a schematic diagram of the left inner wall structure of a conventional integrated gearbox of the utility model.

[0016] Figure 5 It is a schematic diagram of the right inner wall structure of a conventional integrated gearbox of the utility model.

[0017] Figure 6 This is a schematic diagram of the overall structure of Example 2 of the utility model.

[0018] Figure 7 This is a schematic diagram of the inner structure of the box cover of the utility model.

[0019] Figure 8 This is a schematic diagram of the inner structure of the box body in Example 2 of the utility model.

[0020] Fig. 9 This is a schematic diagram of the structure of the special-shaped oil receiving plate of the utility model

[0021] Fig.10 It is a schematic diagram of the inner wall structure of a conventional split-type gearbox case of the utility model.

[0022] Fig.11 It is a schematic diagram of the inner wall structure of a conventional split gearbox case cover of the utility model.

[0023] Numbers in the figure: 1, casing; 2, left bearing cavity; 3, right bearing cavity; 4, left oil bin; 401, first oil groove; 402, second oil groove; 403, third oil groove; 404, first oil passage; 405, second oil passage; 406, third oil passage; 407, first oil receiving plate; 5, right oil bin; 501, fourth oil groove; 502, fourth oil passage; 6, special-shaped oil receiving plate; 7, through hole; 8, inner cavity; 9, casing cover; 10, second oil receiving plate; 11, fifth oil passage. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model are clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example 1

[0025] Please see attached Figure 1-3 The present embodiment is a high-efficiency lubricating electric vehicle gearbox: comprising a housing 1, a left bearing chamber 2 is provided on the left side of the housing 1, a right bearing chamber 3 is provided on the right side of the housing 1, the left bearing chamber 2 is connected to a left oil bin 4, the right bearing chamber 3 is connected to a right oil bin 5, a special-shaped oil receiving plate 6 is fixedly connected to the top of the housing 1, both ends of the special-shaped oil receiving plate 6 are connected to the left oil bin 4 and the right oil bin 5, and a through hole 7 is provided on the side of the special-shaped oil receiving plate 6.

[0026] The housing 1 is an integrated reduction gearbox. The housing 1 is the main support body supporting the movement of gears inside the gearbox. The lubricating oil is located inside the housing 1. The left bearing cavity 2 and the right bearing cavity 3 at both ends of the housing 1 are used to carry bearings respectively. The left bearing cavity 2 is connected to the right bearing cavity through a special-shaped oil receiving plate 6. The special-shaped oil receiving plate 6 spans the top of the housing 1. The special-shaped oil receiving plate 6 is used to collect the lubricating oil splashed from the gearbox cavity 8 when the gears are running. The collected lubricating oil flows back to the left bearing cavity 2 and the right bearing cavity 3 through the left oil tank 4 and the right oil tank 5 respectively. The connecting channel between the left oil tank 4 and the left bearing cavity 2 is located at the inner end of the bearing, located at the bearing The lubricating oil at the inner end of the chamber will directly act on the bearing, and then flow into the box body 1 from the gap of the bearing, circulate back and forth, thereby increasing the lubrication effect and reducing the working temperature of the bearing. A through hole 7 is provided on the front side of the special-shaped oil receiving plate 6, and the through hole 7 is used to collect the splashed lubricating oil, and the lubricating oil is collected above the special-shaped oil receiving plate 6; the connection between the left oil bin and the left bearing cavity is located at the leftmost side of the left bearing cavity, and the connection between the right bearing cavity and the right oil bin is located at the rightmost side of the right bearing cavity, so that the lubricating oil in the left oil bin and the right oil bin directly acts on the outside of the bearing during the falling process, and then seeps inward through the roller gap of the bearing outside the bearing, so that the bearing is fully lubricated.

[0027] The special-shaped oil receiving plate 6 is a V-shaped or U-shaped structure as a whole. The special-shaped oil receiving plate 6 and the inner wall of the box body 1 form a downwardly recessed inner cavity 8. The inner cavity 8 can increase the storage amount of lubricating oil. The two ends of the inner cavity 8 are connected to the left oil tank 4 and the right oil tank 5 through connecting holes, so that the splashed lubricating oil can flow back to the left oil tank 4 and the right oil tank 5.

[0028] There are two bearing holes in the left bearing cavity 2 and the right bearing cavity 3, and the groove depths of the two bearing holes are different. There are three oil grooves in the left oil tank 4, namely the first oil groove 401, the second oil groove 402 and the third oil groove 403, among which the first oil groove 401 and the second oil groove 402 are connected, and the first oil groove 401 is directly connected to the special-shaped oil receiving plate 6. The first oil groove 401 is connected to a bearing hole through the first oil channel 404, and the second oil groove 402 is connected to the other bearing hole through the second oil channel 405. A through groove is also opened between the two bearing holes. The third oil groove 403 is located on the side of the bearing hole, and the third oil groove 403 is placed horizontally. At the same time, the first oil receiving plate 407 extending horizontally inward is connected to the bottom of the third oil groove 403, and the first oil receiving plate 407 and the third oil groove 403 are used to receive the lubricating oil attached to the inside of the box body 1.

[0029] The right oil tank 5 is located above the bearing cavity, and the fourth oil channel 502 is an inverted Y-shaped structure. The lower end of the fourth oil channel 502 is connected to the two bearing holes, so that the lubricating oil in the fourth oil groove 501 is transported to the two bearing holes respectively through the fourth oil channel 502. Example 2

[0030] The structure is the same as the above embodiment. Figure 6-9 As shown, the specific difference of this embodiment is that: a box cover 9 is provided at the left end of the box body 1, the box cover 9 and the box body 1 are fixedly connected by bolts, the left bearing cavity 2 is located on the box cover 9, and the box cover 9 is provided with a second oil receiving plate 10 connected to the special-shaped oil receiving plate 6, and the sides of the left oil tank 4 and the right oil tank 5 are both provided with a fifth oil channel 11.

[0031] The gearbox is a split gearbox, and the box body 1 and the box cover 9 are detachable. There are bolt holes around the box body 1 and the box cover 9. The box body 1 and the box cover 9 are connected by fixing bolts. The box cover 9 is located on the left side of the box body 1. At this time, the left bearing cavity 2 is located on the box cover 9, and the right bearing cavity 3 is still located on the box body 1. The end face of the second oil receiving plate 10 on the box cover 9 corresponds to the end face of the special-shaped oil receiving plate 6. After the box body 1 and the box cover 9 are fixed, the two end faces can be seamlessly spliced. The left oil tank 4 in the left bearing cavity 2 is located on the other side of the second oil receiving plate 10. At this time, the lubricating oil can still be transported to both ends through the special-shaped oil receiving plate 6. Furthermore, in order to facilitate the reflux of the lubricating oil, fifth oil passages 11 are provided on the sides of the left bearing cavity 2 and the right bearing cavity 3. The fifth oil passages 11 are located below the left oil tank 4 and the right oil tank 5.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient lubrication gearbox for electric vehicles, characterized by: The invention comprises a casing (1), wherein a left bearing chamber (2) is provided on the left side of the casing (1), and a right bearing chamber (3) is provided on the right side of the casing (1); the left bearing chamber (2) is connected to a left oil bin (4), and the right bearing chamber (3) is connected to a right oil bin (5); a special-shaped oil receiving plate (6) is fixedly connected to the top of the casing (1), and two ends of the special-shaped oil receiving plate (6) are connected to the left oil bin (4) and the right oil bin (5); and a through hole (7) is provided on the side of the special-shaped oil receiving plate (6).

2. The highly efficient lubricating electric vehicle gearbox according to claim 1, characterized in that: The special-shaped oil receiving plate (6) is of a V-shaped or U-shaped structure, and the special-shaped oil receiving plate (6) cooperates with the inner wall of the box body (1) to form an inner cavity (8) for the movement of lubricating oil.

3. The highly efficient lubricating electric vehicle gearbox according to claim 1, characterized in that: The left oil tank (4) comprises a first oil groove (401), a second oil groove (402) and a third oil groove (403); the first oil groove (401) is in communication with the special-shaped oil receiving plate (6); a first oil passage (404) is connected between the first oil groove (401) and the left bearing cavity (2); a second oil passage (405) is connected between the second oil groove (402) and the left bearing cavity (2); the third oil groove (403) is located on the side of the left bearing cavity (2); a third oil passage (406) is connected between the third oil groove (403) and the left bearing cavity (2); and a first oil receiving plate (407) is provided on the side of the third oil passage (406).

4. The highly efficient lubricating electric vehicle gearbox according to claim 1, characterized in that: The right oil tank (5) comprises a fourth oil groove (501), and a fourth oil passage (502) is connected between the fourth oil groove (501) and the right bearing cavity.

5. The highly efficient lubricating electric vehicle gearbox according to claim 1, characterized in that: A box cover (9) is provided at the left end of the box body (1), the box cover (9) and the box body (1) are fixedly connected by bolts, the left bearing cavity (2) is located on the box cover (9), and a second oil receiving plate (10) is provided on the box cover (9) and is connected to the special-shaped oil receiving plate (6).

6. The highly efficient lubricating electric vehicle gearbox according to claim 5, characterized in that: A fifth oil passage (11) is provided on the side of the left oil bin (4) and the side of the right oil bin (5).

Images