A gear box

Abstract

The present invention discloses a gearbox, which belongs to the technical field of gearbox lubrication. The gearbox provided by the present invention comprises a lubricating oil pool and an oil stirring box arranged at the bottom of the gearbox, the oil stirring box comprising an oil storage cavity, the oil storage cavity having an oil digging port and an oil outlet, the oil stirring box being arranged on a rotating part in the gearbox, and being configured to be immersed in the lubricating oil pool as the rotating part rotates. The gearbox is provided with an oil stirring box on the rotating part, and the oil stirring box is used to transport the lubricating oil in the lubricating oil pool to a high position, thereby achieving the purpose of improving the lubrication effect of the lubrication points of the gearbox without affecting the transmission efficiency of the gearbox.

Description

Technical Field

[0001] The invention relates to the technical field of gear box lubrication, and in particular to a gear box. Background Art

[0002] Gearboxes are important components widely used in mechanical transmissions, and gears are basic parts in gearbox transmissions. In order to reduce the friction generated during the meshing of the gears, it is often necessary to lubricate the gears with gear lubricating oil. However, during the gear lubrication process, the amount of splashing lubricating oil is often insufficient due to the low liquid level. In order to increase the amount of splashing lubricating oil, an oil scraper or oil scraper block is generally provided in the gearbox in the prior art. However, the amount of oil that can be provided by the oil scraper or oil scraper block is very limited, and the assembly precision is required to be very high. In addition to providing an oil scraper or oil scraper block, an oil collecting trough can also be cast or machined in the inner cavity of the gearbox, and the oil collecting trough can be used to collect the splashing lubricating oil. However, the oil collecting trough increases the casting difficulty or machining difficulty of the gearbox, and the amount of splashing lubricating oil is also limited.

[0003] In order to increase the amount of splash lubricating oil, the oil level of the gearbox needs to be increased. However, too high an oil level will increase the oil churning loss of the gearbox and reduce the transmission efficiency of the gearbox. In addition, it will also increase the risk of oil leakage at the mechanical seal of the gearbox.

[0004] Therefore, how to increase the amount of splash lubricating oil without increasing the oil level of the gearbox is a technical problem that urgently needs to be solved. Summary of the invention

[0005] The object of the present invention is to provide a gear box which has good lubrication effect, high transmission efficiency, high reliability and is not prone to lubricating oil leakage.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A gear box, comprising:

[0008] A lubricating oil pool is arranged at the bottom of the gear box;

[0009] The oil stirring box comprises an oil storage cavity having an oil digging port and an oil outlet. The oil stirring box is arranged on a rotating component in the gear box and is configured to be immersed in the lubricating oil pool as the rotating component rotates.

[0010] Preferably, the oil stirring box includes a first cover plate, a second cover plate and a plurality of side plates, the first cover plate and the second cover plate are arranged opposite to each other, one end of the side plate is connected to the first cover plate, and the other end is connected to the second cover plate, the first cover plate, the second cover plate and the plurality of side plates are arranged to form the oil storage chamber.

[0011] Preferably, the first cover plate is connected to the rotating component, the oil digging port and the oil outlet are both arranged on the side plate, and the opening direction of the oil digging port is toward the rotation direction of the rotating component, and the opening directions of the oil digging port and the oil outlet are different.

[0012] Preferably, the side panels include a front side panel, a left side panel, a rear side panel and a right side panel connected end to end, the front side panel and the rear side panel are arranged opposite to each other, the left side panel and the right side panel are arranged opposite to each other, the oil excavation port is located on the front side panel, and the oil outlet is located on the left side panel or the right side panel.

[0013] Preferably, there are multiple oil outlets, and the multiple oil outlets are arranged at intervals on the left plate or the right plate.

[0014] Preferably, the front side plate is tilted, and an acute angle is formed between the front side plate and the first cover plate, and an obtuse angle is formed between the front side plate and the second cover plate.

[0015] Preferably, an oil guiding structure is provided on the oil outlet.

[0016] Preferably, the oil guiding structure comprises an oil guiding pipe or an oil guiding groove.

[0017] Preferably, there are multiple oil stirring boxes, and the multiple oil stirring boxes are distributed along the circumference of the rotating component.

[0018] Preferably, the opening directions of the oil digging openings on the plurality of oil stirring boxes are different.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a gear box, which provides an oil stirring box on the rotating part of the gear box, and uses the oil stirring box to transport the lubricating oil in the lubricating oil pool to a high position, thereby achieving the purpose of improving the lubrication effect of the lubrication points of the gear box without affecting the transmission efficiency of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of a partial structure of a gearbox provided by the present invention;

[0022] Figure 2 is a top view of a partial structure of a gearbox provided by the present invention;

[0023] Figure 3 is a perspective view of the oil stirring box provided by the present invention;

[0024] Figure 4 It is a front view of the oil stirring box provided by the present invention.

[0025] In the figure:

[0026] 1. Oil digging port; 2. Oil outlet; 3. First cover plate; 4. Second cover plate; 5. Front side plate; 6. Left side plate; 7. Rear side plate; 8. Connection hole;

[0027] 100, oil stirring box; 200, planetary carrier; 300, planetary gear; 400, driving shaft. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all.

[0029] This embodiment provides a gear box, such as Figure 1 and Figure 2 As shown, the gearbox includes a housing (not shown in the figure), a planetary gear train mechanism arranged in the housing, the planetary gear train mechanism specifically includes a planet carrier 200, a plurality of planetary gears 300, a sun gear (not shown in the figure) and a ring gear (not shown in the figure), a lubricating oil pool is arranged at the bottom of the housing, the planetary gear 300 is mounted on the planet carrier 200, the sun gear is located in the middle of the plurality of planetary carriers 200, and the planetary gear 300 is located in the ring gear and meshes with the sun gear and the ring gear at the same time. A through hole is arranged at the top of the planet carrier 200 to allow the drive shaft 400 to pass through, and a gear tooth structure is arranged on the inner wall of the through hole, and a gear tooth structure is also arranged at one end of the drive shaft 400 extending into the through hole, and the gear tooth structure on the drive shaft 400 meshes with the gear tooth structure on the planet carrier 200. When the drive shaft 400 rotates under the drive of the power source, the planet carrier 200 can rotate accordingly.

[0030] The stirring oil box 100 is installed on the side wall of the planetary carrier 200, and specifically includes an oil storage chamber, which has an oil opening 1 and an oil outlet 2. When the driving shaft 400 drives the planetary carrier 200 to rotate, the stirring oil box 100 located on the side wall of the planetary carrier 200 can also rotate accordingly, thereby being immersed in the lubricating oil pool of the gearbox. After the stirring oil box 100 is immersed in the lubricating oil pool of the gearbox, the lubricating oil in the lubricating oil pool can enter the oil storage chamber through the oil opening 1 for temporary storage. When the stirring oil box 100 continues to rotate with the planetary carrier 200, the stirring oil box 100 can reach a higher position away from the lubricating oil pool. When the lubricating oil reaches the lubrication point, the lubricating oil can flow out from the oil outlet 2 to the lubrication point, thereby achieving lubrication of the lubrication point. By arranging the stirring oil box 100 on the planetary carrier 200 of the gearbox, effective lubrication of the lubrication points of the gearbox can be achieved when the oil level in the lubricating oil pool is low, avoiding mechanical wear caused by insufficient lubrication, and helping to improve the service life and transmission stability of the gearbox.

[0031] Specifically, Figure 3 and Figure 4 As shown, the oil stirring box 100 includes a first cover plate 3, a second cover plate 4 and a plurality of side plates, and the first cover plate 3 and the second cover plate 4 are arranged opposite to each other. The first cover plate 3 is an arc-shaped plate fixedly connected to the planetary frame 200. In order to facilitate the fixing of the first cover plate 3 on the planetary frame 200, the length of the first cover plate 3 is increased and protrudes from the side plate, and a connecting hole 8 is provided at the end of the protruding side plate. The oil stirring box 100 is fixed to the planetary frame 200 by passing a connecting piece through the connecting hole 8. Of course, in addition to the connection with the connecting piece, other connection methods can also be used.

[0032] The side plate is located between the first cover plate 3 and the second cover plate 4, and one end of the side plate is connected to the first cover plate 3, and the other end is connected to the second cover plate 4. The first cover plate 3, the second cover plate 4 and multiple side plates are arranged to form the above-mentioned oil storage chamber. The positions of the oil digging port 1 and the oil outlet 2 are not specifically limited. For example, they can be set on the second cover plate 4, or on the side plate, as long as it can ensure that the lubricating oil is smoothly stored in the oil storage chamber and smoothly transported to the lubrication point. In this embodiment, in order to increase the amount of lubricating oil entering the oil storage chamber, and to prevent the lubricating oil from flowing out of the oil outlet 2 too early, the oil digging port 1 and the oil outlet 2 are both arranged on the side plate, and the opening direction of the oil digging port 1 is set toward the rotation direction of the planetary carrier 200, and the opening directions of the oil digging port 1 and the oil outlet 2 are set to be different.

[0033] Furthermore, the number of side panels is determined by the number of side lengths of the first cover plate 3 and the second cover plate 4, for example, it can be three, four, five or more; the shape of the side panels is determined by the shape of the first cover plate 3 and the second cover plate 4, for example, it can be a triangle, a trapezoid, a square or other shapes. In this embodiment, since the first cover plate 3 and the second cover plate 4 are both rectangular parallelepiped, the number of side panels is four, namely the front side panel 5, the left side panel 6, the rear side panel 7 and the right side panel. The front side panel 5 and the rear side panel 7 are arranged oppositely, and the left side panel 6 and the right side panel are arranged oppositely. When the planetary frame 200 rotates, the front side panel 5 is the front of the oil stirring box 100, and the rear side panel 7 is the back of the oil stirring box 100. The oil digging port 1 is located on the front side panel 5, and the oil outlet 2 is located on the left side panel 6. The oil digging port 1 is arranged on the front side panel 5 to facilitate the lubricating oil to enter the oil storage chamber, and the oil outlet 2 is arranged on the left side panel 6 to prevent the lubricating oil from entering the oil storage chamber from the oil digging port 1 and directly flowing out from the oil outlet 2. Of course, the oil outlet 2 can also be arranged on the right side plate in addition to the left side plate 6. Further, the opening area of ​​the oil outlet 2 is smaller than the opening area of ​​the oil digging port 1, so that the time required for the lubricating oil to flow out can be prolonged.

[0034] In order to reduce the resistance encountered by the oil stirring box 100 when passing through the lubricating oil pool and reduce the efficiency loss of the oil stirring box 100 when moving in the lubricating oil, the front side plate 5 is tilted toward the rear side plate 7, such as Figure 3 and Figure 4 As shown, the front side plate 5 forms an acute angle with the first cover plate 3, and the front side plate 5 forms an obtuse angle with the second cover plate 4. Further, the rear side plate 7 forms an acute angle with the first cover plate 3, and the left side plate 6 forms an obtuse angle with the second cover plate 4.

[0035] Furthermore, since the distance between the second cover plate 4 and the lubricating oil pool is the shortest when the oil stirring box 100 rotates to the lubricating oil pool, in this embodiment, the oil digging port 1 is set at one end of the front side plate 5 close to the second cover plate 4, so as to increase the amount of lubricating oil entering the oil storage chamber. The opening area of ​​the oil digging port 1 is set to be smaller than the area of ​​the front side plate 5. This setting can also ensure that when the oil stirring box 100 rotates to the highest point away from the lubricating oil pool, the lubricating oil can be stored below the oil digging port 1 in the oil storage chamber, thereby preventing the lubricating oil from flowing out of the oil digging port 1. Furthermore, the oil outlet 2 is set at one end of the left side plate 6 close to the first cover plate 3, thereby increasing the distance between the oil outlet 2 and the oil digging port 1, and preventing the lubricating oil from flowing out of the oil outlet 2 too early.

[0036] In order to lubricate multiple lubrication points simultaneously, the number of the oil outlets 2 can be set to multiple. In this embodiment, Figure 3 and Figure 4 As shown, there are two oil outlets 2, one of which is located at one end of the left side plate 6, and the other is located at the other end of the left side plate 6. In order to accurately guide the lubricating oil to the lubrication point and improve the lubrication effect, an oil guide structure can be provided on the oil outlet 2, one end of the oil guide structure is connected to the oil outlet 2, and the other end is connected to the lubrication point. Specifically, the oil guide structure can be an oil guide pipe or an oil guide groove. Of course, in other embodiments, the number of oil outlets 2 can also be specifically set according to actual needs.

[0037] In order to further improve the lubrication effect, in this embodiment, the number of the oil stirring boxes 100 is multiple, and the multiple oil stirring boxes 100 are distributed along the circumference of the planetary carrier 200, preferably evenly distributed. The opening direction and opening position of the oil digging port 1 on the oil stirring box 100 can be the same or different. When the planetary carrier 200 rotates in only one direction, that is, only forward or only reverse, they are preferably the same; and when the planetary carrier 200 needs to rotate both forward and reverse, they are preferably different.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gear box, characterized in that: include: A lubricating oil pool is arranged at the bottom of the gear box; The gearbox comprises a housing, and a planetary gear train mechanism arranged in the housing, wherein the planetary gear train mechanism specifically comprises a planet carrier (200), a plurality of planetary gears (300), a sun gear, and a ring gear; An oil stirring box (100) comprises an oil storage chamber, wherein the oil storage chamber has an oil digging port (1) and an oil outlet port (2); the oil stirring box (100) is arranged on a rotating component in the gear box and is configured to be immersed in the lubricating oil pool as the rotating component rotates; The oil stirring box (100) is mounted on the side wall of the planetary frame (200); The oil stirring box (100) comprises a first cover plate (3), a second cover plate (4) and a plurality of side plates, wherein the first cover plate (3) and the second cover plate (4) are arranged opposite to each other, one end of the side plate is connected to the first cover plate (3), and the other end is connected to the second cover plate (4), and the first cover plate (3), the second cover plate (4) and the plurality of side plates are arranged to surround and form the oil storage cavity; The first cover plate (3) is an arc-shaped plate fixedly connected to the planet carrier (200) and is arranged to protrude from the side plate; The first cover plate (3) is connected to the rotating component, the oil excavation port (1) and the oil outlet port (2) are both arranged on the side plate, and the opening direction of the oil excavation port (1) faces the rotation direction of the rotating component, and the opening directions of the oil excavation port (1) and the oil outlet port (2) are different; The side panels include a front side panel (5), a left side panel (6), a rear side panel (7) and a right side panel connected end to end, the front side panel (5) and the rear side panel (7) are arranged opposite to each other, the left side panel (6) and the right side panel are arranged opposite to each other, the oil excavation port (1) is located on the front side panel (5), and the oil outlet (2) is located on the left side panel (6) or the right side panel; The number of the oil outlets (2) is multiple, and the multiple oil outlets (2) are arranged at intervals on the left side plate (6) or the right side plate.

2. The gearbox according to claim 1, characterized in that: The front side plate (5) is arranged at an angle, and an acute angle is formed between the front side plate (5) and the first cover plate (3), and an obtuse angle is formed between the front side plate (5) and the second cover plate (4).

3. The gearbox according to claim 1, characterized in that: The oil outlet (2) is provided with an oil guide structure.

4. The gearbox according to claim 3, characterized in that: The oil guiding structure includes an oil guiding pipe or an oil guiding groove.

5. The gearbox according to claim 1, characterized in that: The number of the oil stirring boxes (100) is plural, and the plurality of oil stirring boxes (100) are distributed along the circumference of the rotating component.

6. The gearbox according to claim 5, characterized in that: The opening directions of the oil digging openings (1) on the plurality of oil stirring boxes (100) are different.

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