Adjustable transfer case transmission structure

Abstract

The utility model relates to the technical field of transfer cases, and discloses an adjustable transfer case transmission structure which solves the problems that an existing transfer case is inconvenient to adjust in a variable speed mode and poor in lubricating effect, and comprises a transmission mechanism body which is installed in a transfer case body. A lubricating mechanism matched with the transmission mechanism body is arranged on the side edge of the transfer case body in a penetrating mode. The transmission mechanism body is composed of an input shaft, an input large gear, an input small gear, a rear axle driving shaft, a speed regulation driving gear, a first adjusting assembly, a rear axle driven small gear, a rear axle speed reduction large gear, an intermediate transmission shaft, a speed reduction large gear, a speed reduction small gear, a first synchronous transmission small gear, a second adjusting assembly, a second synchronous transmission small gear, a first chain wheel and a front axle driving shaft. A chain wheel II and a chain; by means of the transfer case transmission structure, variable-speed adjustment can be achieved, double-wheel drive or four-wheel drive can be achieved, meanwhile, comprehensive lubrication is achieved, and the using effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transfer cases, and specifically relates to an adjustable transfer case transmission structure. Background Art

[0002] A transfer case is a component on a four-wheel drive vehicle, which is a device for distributing the power of the engine. It can output power to the rear axle, or output power to the front axle and the rear axle simultaneously. When the existing transfer case transmission structure is in use, it is usually not convenient to adjust the rotation speed of the output shaft, and the use effect is not good. In addition, the existing transfer case transmission structure generally realizes lubrication through the lubricating oil inside the box body following the rotation of the gears. If the gears are not in the same plane, there will be an incomplete lubrication situation, which affects the service life. Therefore, this application proposes an adjustable transfer case transmission structure. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable transfer case transmission structure, which effectively solves the problems that the existing transfer case is not convenient for speed adjustment and has poor lubrication effect.

[0004] To achieve the above object, the utility model provides the following technical solution: An adjustable transfer case transmission structure includes a transmission mechanism body, the transmission mechanism body is installed inside the transfer case body, and a lubrication mechanism matching the transmission mechanism body is inserted through the side of the transfer case body. The transmission mechanism body is composed of an input shaft, an input large gear, an input small gear, a rear axle drive shaft, a speed regulation drive gear, a first adjustment component, a rear axle driven small gear, a rear axle reduction large gear, an intermediate transmission shaft, a reduction large gear, a reduction small gear, a first synchronous transmission small gear, a second adjustment component, a second synchronous transmission small gear, a first sprocket, a front axle drive shaft, a second sprocket and a chain. The input shaft, the rear axle drive shaft, the intermediate transmission shaft and the front axle drive shaft are all inserted through the transfer case body and rotatably connected thereto. The input large gear and the input small gear are both sleeved on the input shaft and fixedly connected thereto. The speed regulation drive gear is fixedly connected to one end of the rear axle drive shaft. The first adjustment component is sleeved on the speed regulation drive gear and slidably inserted through the transfer case body. The rear axle driven small gear, the rear axle reduction large gear, the second synchronous transmission small gear and the first sprocket are all rotatably connected to the rear axle drive shaft through a first bearing. The rear axle driven small gear is fixedly connected to the rear axle reduction large gear. The second synchronous transmission small gear is fixedly connected to the first sprocket. The reduction large gear and the reduction small gear are respectively fixedly connected to both ends of the intermediate transmission shaft. The reduction large gear is meshed with the input large gear. The reduction small gear is meshed with the rear axle reduction large gear. The first synchronous transmission small gear is fixedly connected to one end of the rear axle drive shaft close to the second synchronous transmission small gear. The second adjustment component is sleeved on the first synchronous transmission small gear and slidably inserted through the transfer case body. The second sprocket is fixedly connected to one end of the front axle drive shaft and connected to the first sprocket through a chain.

[0005] Preferably, both the first adjusting assembly and the second adjusting assembly are composed of an adjusting pull rod, a connecting arm, a sleeve, and an internal gear ring. The adjusting pull rod slides through the transfer case body. The sleeve is fixedly connected to the adjusting pull rod through the connecting arm. The internal gear ring is rotatably connected to the inside of the sleeve through a second bearing.

[0006] Preferably, a limiting sliding sleeve slidably connected to the adjusting pull rod is fixedly arranged on the transfer case body.

[0007] Preferably, the lubrication mechanism is composed of a bottom oil box, an oil suction pipe, a circulation pump, an oil supply pipe, and a plurality of oil injection nozzles. The bottom oil box is fixedly connected to and communicated with one end of the bottom of the transfer case body. The circulation pump is fixedly connected to the side of the transfer case body. The oil suction pipe is connected between the bottom oil box and the circulation pump. The oil supply pipe is connected to the oil outlet of the circulation pump and penetrates through the transfer case body. The oil injection nozzles are fixedly connected to the oil supply pipe and are located at the top of the transmission mechanism body.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0009] (1) During operation, by providing a transmission mechanism body composed of an input shaft, an input large gear, an input small gear, a rear axle drive shaft, a speed regulation drive gear, a first adjusting assembly, a rear axle driven small gear, a rear axle reduction large gear, an intermediate transmission shaft, a reduction large gear, a reduction small gear, a first synchronous transmission small gear, a second adjusting assembly, a second synchronous transmission small gear, a first sprocket, a front axle drive shaft, a second sprocket, and a chain, speed change adjustment can be achieved, and at the same time, two-wheel drive or four-wheel drive can be realized;

[0010] (2) By providing a lubrication mechanism composed of a bottom oil box, an oil suction pipe, a circulation pump, an oil supply pipe, and a plurality of oil injection nozzles, active oil injection lubrication can be realized, improving the comprehensiveness of lubrication, avoiding lubrication dead corners, and thus being able to improve the service life of the transfer case. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model.

[0012] In the drawings:

[0013] Figure 1 is a schematic connection structure diagram of the transmission mechanism body and the lubrication mechanism of the present utility model with the transfer case body;

[0014] Figure 2 is a schematic connection structure diagram of the transmission mechanism body and the lubrication mechanism of the present utility model;

[0015] Figure 3 is a schematic structure diagram of the transmission mechanism body of the present utility model;

[0016] Figure 4 This is a schematic structural diagram of Adjustment Component 1 of the present utility model;

[0017] Figure 5 This is a schematic structural diagram of the lubrication mechanism of the present utility model;

[0018] In the figure: 1. Transmission mechanism body; 2. Power distribution box; 3. Lubrication mechanism; 4. Input shaft; 5. Input large gear; 6. Input small gear; 7. Rear axle drive shaft; 8. Speed regulation drive gear; 9. Adjustment Component 1; 10. Rear axle driven small gear; 11. Rear axle reduction large gear; 12. Intermediate transmission shaft; 13. Reduction large gear; 14. Reduction small gear; 15. Synchronous transmission small gear 1; 16. Adjustment Component 2; 17. Synchronous transmission small gear 2; 18. Sprocket 1; 19. Front axle drive shaft; 20. Sprocket 2; 21. Chain; 22. Bearing 1; 23. Adjustment pull rod; 24. Connecting arm; 25. Sleeve; 26. Internal gear ring; 27. Bearing 2; 28. Limit sliding sleeve; 29. Bottom oil box; 30. Oil suction pipe; 31. Circulation pump; 32. Oil supply pipe; 33. Injector nozzle. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] From Figures 1 to 3Provided is a variable transfer case transmission structure of the present utility model, which includes a transmission mechanism body 1. The transmission mechanism body 1 is installed inside a transfer case body 2. A lubrication mechanism 3 matching the transmission mechanism body 1 is inserted through the side of the transfer case body 2. The transmission mechanism body 1 is composed of an input shaft 4, an input large gear 5, an input small gear 6, a rear axle drive shaft 7, a speed regulation drive gear 8, a first adjustment component 9, a rear axle driven small gear 10, a rear axle reduction large gear 11, an intermediate transmission shaft 12, a reduction large gear 13, a reduction small gear 14, a first synchronous transmission small gear 15, a second adjustment component 16, a second synchronous transmission small gear 17, a first sprocket 18, a front axle drive shaft 19, a second sprocket 20, and a chain 21. The input shaft 4, the rear axle drive shaft 7, the intermediate transmission shaft 12, and the front axle drive shaft 19 are all inserted through the transfer case body 2 and rotatably connected thereto. The input large gear 5 and the input small gear 6 are both sleeved on the input shaft 4 and fixedly connected thereto. The speed regulation drive gear 8 is fixedly connected to one end of the rear axle drive shaft 7. The first adjustment component 9 is sleeved on the speed regulation drive gear 8 and slidably inserted through the transfer case body 2. The rear axle driven small gear 10, the rear axle reduction large gear 11, the second synchronous transmission small gear 17, and the first sprocket 18 are all rotatably connected to the rear axle drive shaft 7 through a first bearing 22. The rear axle driven small gear 10 is fixedly connected to the rear axle reduction large gear 11. The second synchronous transmission small gear 17 is fixedly connected to the first sprocket 18. The reduction large gear 13 and the reduction small gear 14 are respectively fixedly connected to both ends of the intermediate transmission shaft 12. The reduction large gear 13 is meshed with the input large gear 5. The reduction small gear 14 is meshed with the rear axle reduction large gear 11. The first synchronous transmission small gear 15 is fixedly connected to one end of the rear axle drive shaft 7 close to the second synchronous transmission small gear 17. The second adjustment component 16 is sleeved on the first synchronous transmission small gear 15 and slidably inserted through the transfer case body 2. The second sprocket 20 is fixedly connected to one end of the front axle drive shaft 19 and connected to the first sprocket 18 through the chain 21;

[0021] During use, if the first adjusting component 9 is only connected to the speed-regulating drive gear 8, both the rear axle drive shaft 7 and the front axle drive shaft 19 are in a stationary state. During normal driving, the first adjusting component 9 is moved in the direction of the input shaft 4 and is simultaneously connected to the speed-regulating drive gear 8 and the input pinion 6, so that the speed-regulating drive gear 8 and the input pinion 6 rotate synchronously, thereby driving the rear axle drive shaft 7 to rotate synchronously with the input shaft 4. At this time, although the large reduction gear 13, the small reduction gear 14, the rear axle driven pinion 10, and the rear axle large reduction gear 11 also rotate, they have no load and are therefore in an idling state. If decelerated driving is required, the first adjusting component 9 is controlled to move in the direction of the rear axle driven pinion 10, so that the first adjusting component 9 is simultaneously connected to the speed-regulating drive gear 8 and the rear axle driven pinion 10, so that the speed-regulating drive gear 8 and the rear axle driven pinion 10 rotate synchronously. At this time, the input large gear 5 drives the large reduction gear 13 to rotate to achieve speed reduction. The large reduction gear 13 drives the intermediate transmission shaft 12 to rotate. The intermediate transmission shaft 12 drives the small reduction gear 14 to rotate. The small reduction gear 14 drives the rear axle large reduction gear 11 to rotate, thereby driving the rear axle driven pinion 10 and the speed-regulating drive gear 8 to rotate, and driving the rear axle drive shaft 7 to rotate at a reduced speed through the speed-regulating drive gear 8;

[0022] When the second adjusting component 16 is only connected to the first synchronous transmission pinion 15, the second synchronous transmission pinion 17 and the first sprocket 18 are in a stationary state. At this time, only the rear wheels are driven to rotate. If four-wheel drive is to be achieved, the second adjusting component 16 is moved in the direction close to the second synchronous transmission pinion 17, so that the second adjusting component 16 is simultaneously connected to the first synchronous transmission pinion 15 and the second synchronous transmission pinion 17, so as to be able to drive the second synchronous transmission pinion 17 to rotate. The second synchronous transmission pinion 17 drives the first sprocket 18 to rotate. The first sprocket 18 drives the second sprocket 20 to rotate through the chain 21. The second sprocket 20 drives the front axle drive shaft 19 to rotate to achieve four-wheel drive;

[0023] Consisted of Figure 1 、 Figure 3 and Figure 4 shown, both the first adjusting component 9 and the second adjusting component 16 are composed of an adjusting pull rod 23, a connecting arm 24, a sleeve 25, and an internal gear ring 26. The adjusting pull rod 23 slides through the transfer case 2. The sleeve 25 is fixedly connected to the adjusting pull rod 23 through the connecting arm 24. The internal gear ring 26 is rotatably connected to the inside of the sleeve 25 through a second bearing 27. A limit sliding sleeve 28 slidably connected to the adjusting pull rod 23 is fixedly provided on the transfer case 2;

[0024] Through the adjusting pull rod 23, the connecting arm 24, and the sleeve 25, the internal gear ring 26 can be supported and limited, and the position of the internal gear ring 26 can be adjusted. Through the second bearing 27, the mobility of the internal gear ring 26 can be improved. The internal gear ring 26 plays a role in synchronous connection, thereby realizing synchronous rotation;

[0025] Given by Figure 1 , Figure 2 and Figure 5 The lubrication mechanism 3 is composed of a bottom oil box 29, an oil suction pipe 30, a circulation pump 31, an oil supply pipe 32 and a number of oil nozzles 33. The bottom oil box 29 is fixedly connected to and communicated with one end of the bottom of the transfer case body 2. The circulation pump 31 is fixedly connected to the side of the transfer case body 2. The oil suction pipe 30 is connected between the bottom oil box 29 and the circulation pump 31. The oil supply pipe 32 is connected to the oil outlet of the circulation pump 31 and penetrates through the transfer case body 2. The oil nozzles 33 are fixedly connected to the oil supply pipe 32 and are located at the top of the transmission mechanism body 1;

[0026] The lubricating oil inside the transfer case body 2 enters the inside of the bottom oil box 29. The lubricating oil is extracted through the oil suction pipe 30 and the circulation pump 31, and then the lubricating oil is sprayed onto the transmission mechanism body 1 through the oil supply pipe 32 and the oil nozzles 33, so as to achieve a comprehensive lubrication effect and improve the lubrication effect.

[0027] During operation, by setting the transmission mechanism body composed of an input shaft, an input large gear, an input small gear, a rear axle drive shaft, a speed regulation drive gear, a first adjustment component, a rear axle driven small gear, a rear axle reduction large gear, an intermediate transmission shaft, a reduction large gear, a reduction small gear, a first synchronous transmission small gear, a second adjustment component, a second synchronous transmission small gear, a first sprocket, a front axle drive shaft, a second sprocket and a chain, speed change adjustment can be realized, and at the same time, two-wheel drive or four-wheel drive can be realized; by setting the lubrication mechanism composed of a bottom oil box, an oil suction pipe, a circulation pump, an oil supply pipe and a number of oil nozzles, active oil spraying lubrication can be realized, the comprehensiveness of lubrication can be improved, lubrication dead angles can be avoided, and further the service life of the transfer case can be improved.

Claims

1. An adjustable transfer case transmission structure, comprising a transmission mechanism body (1), characterized in that: The transmission mechanism body (1) is installed inside the transfer case body (2). A lubrication mechanism (3) matching the transmission mechanism body (1) is inserted through the side of the transfer case body (2). The transmission mechanism body (1) is composed of an input shaft (4), an input large gear (5), an input small gear (6), a rear axle drive shaft (7), a speed regulation drive gear (8), a first adjustment component (9), a rear axle driven small gear (10), a rear axle reduction large gear (11), an intermediate transmission shaft (12), a reduction large gear (13), a reduction small gear (14), a first synchronous transmission small gear (15), a second adjustment component (16), a second synchronous transmission small gear (17), a first sprocket (18), a front axle drive shaft (19), a second sprocket (20), and a chain (21). The input shaft (4), the rear axle drive shaft (7), the intermediate transmission shaft (12), and the front axle drive shaft (19) are all inserted through the transfer case body (2) and are rotatably connected thereto. The input large gear (5) and the input small gear (6) are both sleeved on the input shaft (4) and are fixedly connected thereto. The speed regulation drive gear (8) is fixedly connected to one end of the rear axle drive shaft (7). The first adjustment component (9) is sleeved on the speed regulation drive gear (8) and is slidably inserted through the transfer case body (2). The rear axle driven small gear (10), the rear axle reduction large gear (11), the second synchronous transmission small gear (17), and the first sprocket (18) are all rotatably connected to the rear axle drive shaft (7) through a first bearing (22). The rear axle driven small gear (10) is fixedly connected to the rear axle reduction large gear (11). The second synchronous transmission small gear (17) is fixedly connected to the first sprocket (18). The reduction large gear (13) and the reduction small gear (14) are respectively fixedly connected to both ends of the intermediate transmission shaft (12). The reduction large gear (13) is meshed with the input large gear (5). The reduction small gear (14) is meshed with the rear axle reduction large gear (11). The first synchronous transmission small gear (15) is fixedly connected to one end of the rear axle drive shaft (7) close to the second synchronous transmission small gear (17). The second adjustment component (16) is sleeved on the first synchronous transmission small gear (15) and is slidably inserted through the transfer case body (2). The second sprocket (20) is fixedly connected to one end of the front axle drive shaft (19) and is connected to the first sprocket (18) through a chain (21).

2. The adjustable transfer case transmission structure according to claim 1, wherein: Both the first adjustment component (9) and the second adjustment component (16) are composed of an adjustment pull rod (23), a connecting arm (24), a sleeve (25), and an internal gear ring (26). The adjustment pull rod (23) is slidably inserted through the transfer case body (2). The sleeve (25) is fixedly connected to the adjustment pull rod (23) through the connecting arm (24). The internal gear ring (26) is rotatably connected to the inside of the sleeve (25) through a second bearing (27).

3. An adjustable transfer case transmission structure according to claim 2, characterized in that: A limit sliding sleeve (28) slidably connected to the adjustment pull rod (23) is fixedly provided on the transfer case body (2).

4. An adjustable transfer case transmission structure according to claim 1, characterized in that: The lubrication mechanism (3) consists of a bottom oil box (29), an oil suction pipe (30), a circulation pump (31), an oil supply pipe (32) and a number of oil nozzles (33). The bottom oil box (29) is fixedly connected to and communicated with one end of the bottom of the transfer case body (2). The circulation pump (31) is fixedly connected to the side of the transfer case body (2). The oil suction pipe (30) is connected between the bottom oil box (29) and the circulation pump (31). The oil supply pipe (32) is connected to the oil outlet of the circulation pump (31) and penetrates through the transfer case body (2). The oil nozzles (33) are fixedly connected to the oil supply pipe (32) and are located at the top of the transmission mechanism body (1).

Images