阅读说明：本技术 一种分动箱及农业机械 (Transfer case and agricultural machine ) 是由 陈震霖 周志 李靖 蒋艳铼 于 2020-11-04 设计创作，主要内容包括：本发明提出了一种分动箱,用于农业机械上,包括箱体,所述箱体内设有用于输入动力的一轴,所述一轴的两端通过轴承设置于所述箱体上,所述一轴上还固定设置有高低档固定齿；所述箱体内还设有与所述一轴平行设置的二轴,所述二轴上设有可沿二轴滑动的滑动齿和主动齿；所述箱体内还设有前驱轴和后驱轴,所述前驱轴和后驱轴之间还设有差速器总成,所述后驱轴上还设有并排设置的被动齿和后驱齿。此结构的分动箱,其结构相对简单,行驶过程中,可通过移动二轴上的主动齿,实现高速全时四驱、高速同步四驱,以及高速单独后驱。与现有结构的分动箱相比,其具有使用成本低,以及整体驱动能力强,载重大的优点。此外,本发明还提出一种农业机械。(The invention provides a transfer case, which is used for agricultural machinery and comprises a case body, wherein a shaft for inputting power is arranged in the case body, two ends of the shaft are arranged on the case body through bearings, and high-low gear fixing teeth are fixedly arranged on the shaft; a second shaft parallel to the first shaft is arranged in the box body, and sliding teeth and driving teeth which can slide along the second shaft are arranged on the second shaft; still be equipped with fore-drive axle and back-drive axle in the box, still be equipped with differential mechanism assembly between fore-drive axle and the back-drive axle, still be equipped with driven tooth and the back-drive tooth that sets up side by side on the back-drive axle. The transfer case with the structure has a relatively simple structure, and can realize high-speed full-time four-wheel drive, high-speed synchronous four-wheel drive and high-speed independent rear drive by moving the driving teeth on the two shafts in the running process. Compare with the transfer case of current structure, it has use cost low to and whole driving capability is strong, the big advantage of load. In addition, the invention also provides agricultural machinery.)

1. A transfer case is used for agricultural machinery and is characterized by comprising a case body, wherein a shaft for inputting power is arranged in the case body, two ends of the shaft are arranged on the case body through bearings, and high-low gear fixing teeth are fixedly arranged on the shaft;

a second shaft parallel to the first shaft is arranged in the box body, and sliding teeth and driving teeth which can slide along the second shaft are arranged on the second shaft;

still be equipped with fore-drive axle and back-drive axle in the box, still be equipped with differential mechanism assembly between fore-drive axle and the back-drive axle, still be equipped with driven tooth and the back-drive tooth that sets up side by side on the back-drive axle.

2. The transfer case of claim 1, wherein the high-low gear fixing teeth comprise high-gear fixing teeth and low-gear fixing teeth, the sliding teeth are provided with first shifting forks which can shift the sliding teeth, and the sliding teeth can be meshed with the high-gear fixing teeth or the low-gear fixing teeth respectively when sliding left and right.

3. The transfer case of claim 2, wherein the driving gear is further provided with a second shifting fork capable of shifting the driving gear, and the driving gear is capable of being meshed with the driven gear, or meshed with the rear-drive gear, or meshed with both the driven gear and the rear-drive gear.

4. The transfer case of claim 3, wherein the secondary shaft is further provided with a plurality of splines, and the sliding teeth and the driving teeth are respectively provided with spline sleeves and are respectively matched with the splines through the spline sleeves.

5. The transfer case of claim 4, wherein an oil seal cover is also provided at one end of said shaft, said oil seal cover being removably fixedly disposed on said case.

6. The transfer case of claim 5, wherein the bearings include first and second oppositely disposed bearings, the first and second bearings being disposed at respective ends of the shaft.

7. The transfer case of claim 6, wherein a plurality of oil seals are further disposed in the oil seal cover, one end of each oil seal abuts against one side of the first bearing, which is away from the second bearing, and the periphery of each oil seal abuts against the inner wall of the oil seal cover.

8. The transfer case of claim 7, wherein the oil seals are backbone oil seals, the number of backbone oil seals being two.

9. The transfer case of claim 8, wherein the differential assembly includes a housing, the driven teeth being removably fixedly coupled with the housing.

10. An agricultural machine comprising a transfer case, wherein the transfer case is as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the field of agricultural machinery, in particular to a transfer case and agricultural machinery.

Background

In recent years, with the continuous development of economy, various agricultural machines such as tractors and the like are more and more widely applied in vast rural areas.

Transfer case for carry out the device that distributes with the power of engine, can be with power take off to the rear axle, perhaps export preceding/rear axle simultaneously, use more and more extensively on present tractor, but the gearbox that extensively applies to tractor at present, receive many-sided factors such as structure and cost consideration, the universal existence can't be for a long time high-speed all-time four-wheel drive to and can't realize the problem of synchronous four-wheel drive, lead to the whole driving force of tractor, and load-carrying capacity all relatively poor.

In conclusion, how to provide a transfer case which has a simple and practical structure, can be driven for a long time at high speed and all times, can be driven independently at high speed, and can be driven synchronously at four drives, and a tractor comprising the transfer case become technical problems which need to be solved by the technical personnel in the field.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the transfer case has a simple and practical structure, can be driven for a long time at high speed and all times, can be driven independently at high speed, can be driven synchronously at all times, and comprises the transfer case.

The solution of the invention is realized by the following steps: the invention provides a transfer case, which is used for agricultural machinery and comprises a case body, wherein a shaft for inputting power is arranged in the case body, two ends of the shaft are arranged on the case body through bearings, and high-low gear fixing teeth are fixedly arranged on the shaft; a second shaft parallel to the first shaft is arranged in the box body, and sliding teeth and driving teeth which can slide along the second shaft are arranged on the second shaft; still be equipped with fore-drive axle and back-drive axle in the box, still be equipped with differential mechanism assembly between fore-drive axle and the back-drive axle, still be equipped with driven tooth and the back-drive tooth that sets up side by side on the back-drive axle. The transfer case with the structure has a relatively simple structure, and can realize high-speed full-time four-wheel drive, high-speed synchronous four-wheel drive and high-speed independent rear drive by moving the driving teeth on the two shafts in the running process. Compare with the transfer case of current structure, it has use cost low to and whole driving capability is strong, the big advantage of load.

On the basis, the high-gear fixed teeth and the low-gear fixed teeth comprise high-gear fixed teeth and low-gear fixed teeth, the sliding teeth are provided with first shifting forks capable of shifting the sliding teeth, and the sliding teeth can be meshed with the high-gear fixed teeth or the low-gear fixed teeth respectively when sliding left and right.

On the basis, the driving gear is further provided with a second shifting fork capable of shifting the driving gear, and the driving gear can be meshed with the driven gear, or meshed with the rear driving gear, or meshed with the driven gear and the rear driving gear simultaneously.

The other technical scheme of the invention is that on the basis of the above, the two shafts are also provided with a plurality of splines, and the sliding teeth and the driving teeth are respectively provided with spline sleeves and are respectively matched with the splines through the spline sleeves.

On the basis, one end of the shaft is also provided with an oil seal cover, and the oil seal cover is detachably and fixedly arranged on the box body.

Another technical solution of the present invention is that, on the basis of the above, the bearing includes a first bearing and a second bearing which are oppositely disposed, and the first bearing and the second bearing are respectively disposed at two ends of the shaft.

On the basis, the other technical scheme of the invention is that a plurality of oil seals are arranged in the oil seal cover, one end of each oil seal abuts against one side of the first bearing, which is far away from the second bearing, and the periphery of each oil seal abuts against the inner wall of the oil seal cover.

The other technical scheme of the invention is that on the basis, the oil seal is a framework oil seal, and the number of the framework oil seals is two.

In addition, the differential assembly comprises a housing, and the driven teeth are detachably and fixedly connected with the housing.

In another aspect, the invention also provides agricultural machinery comprising a transfer case, wherein the transfer case is the transfer case.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic cross-sectional view of a transfer case of the present invention in a high speed full-time four wheel drive condition;

FIG. 2 is a schematic cross-sectional view of a transfer case of the present invention in a high speed synchronous four wheel drive condition;

FIG. 3 is a schematic cross-sectional view of a transfer case of the present invention in a high speed single rear drive condition.

The corresponding relation of the reference signs is as follows:

1 case 2 first bearing 3 oil seal cover

4 oil seal 5-shaft 6-high-low gear fixing tooth

7 two shafts 8 sliding teeth 9 first shifting fork

10 second fork 11 driving tooth 12 front driving shaft

13 differential assembly 14 driven gear 15 rear driving gear

16 rear drive shaft 17 second bearing

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

The embodiment of the invention is as follows, please refer to the transfer case shown in fig. 1 to 3, which is used for agricultural machinery, and specifically comprises a case body 1, wherein a shaft 5 for inputting power is arranged in the case body 1, specifically, two ends of the shaft 5 are respectively arranged on the case body 1 through bearings, a high-low gear fixing tooth 6 is further fixedly arranged on the shaft 5, and when the shaft 5 rotates, the high-low gear fixing tooth 6 is driven to rotate together. The box body 1 is also internally provided with a secondary shaft 7 which is arranged in parallel with the primary shaft 5, the secondary shaft 7 is also provided with a sliding tooth 8 and a driving tooth 11 which can slide left and right along the secondary shaft 7, and the sliding tooth 8 can be meshed with or separated from the high-low gear fixing tooth 6 in the sliding process. The box body 1 is also internally provided with a front drive shaft 12 and a rear drive shaft 16, a differential assembly 13 is further arranged between the front drive shaft 12 and the rear drive shaft 16, the rear drive shaft 16 is also provided with a driven tooth 14 and a rear drive tooth 15 which are arranged side by side, and when the driving tooth 11 moves left and right on the secondary shaft 7, the driving tooth can be respectively meshed with the driven tooth 14, the rear drive tooth 15 or the driven tooth 14 and the rear drive tooth 15 simultaneously. The transfer case with the structure has a relatively simple structure, and can realize high-speed full-time four-wheel drive, high-speed synchronous four-wheel drive and high-speed independent rear drive by moving the driving teeth 11 on the two shafts 7 in the driving process. Compare with the transfer case of current structure, it has use cost low to and whole driving capability is strong, the big advantage of load.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to fig. 3, the high-low gear fixing teeth 6 specifically include high-gear fixing teeth and low-gear fixing teeth, the sliding teeth 8 are provided with a first shifting fork 9 capable of shifting the sliding teeth 8, and when the sliding teeth 8 slide left and right, the first shifting fork can be respectively engaged with the high-gear fixing teeth or the low-gear fixing teeth. When the sliding teeth 8 are meshed with the high-grade fixed teeth, the transfer case outputs high speed. And when the sliding teeth 8 are engaged with the low-gear fixed teeth, the transfer case outputs low speed.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to 3, the driving tooth 11 is further provided with a second fork 10 capable of shifting the driving tooth 11, and the driving tooth 11 can be meshed with the driven tooth 14, can also be meshed with the rear driving tooth 15, and can also be meshed with the driven tooth 14 and the rear driving tooth 15 simultaneously. Specifically, when the driving teeth 11 are engaged with the rear driving teeth 15, the rear driving teeth 15 drive the rear driving shaft 16 to rotate, and the rear driving shaft 16 outputs power, so that high-speed independent rear driving can be realized. When the driving teeth 11 are engaged with the driven teeth 14, the driven teeth 14 drive the front driving shaft 12 and the rear driving shaft 16 to rotate simultaneously, and at the moment, high-speed full-time four-wheel drive can be realized. When the driving tooth 11 is simultaneously engaged with the driven tooth 14 and the rear driving tooth 15, high-speed synchronous four-wheel drive can be realized.

On the basis of the above embodiment, in another embodiment of the present invention, the secondary shaft 7 is further provided with a plurality of splines (not shown in the figure), and the sliding teeth 8 and the driving teeth 11 are respectively provided with spline housings matched with the splines, that is, the sliding teeth 8 and the driving teeth 11 are respectively matched with the splines through the spline housings.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to 3, an oil seal cover 3 is further disposed at one end, specifically, the left end shown in the drawings, of a shaft 5, the oil seal cover 3 is detachably and fixedly disposed on the box body 1, specifically, a threaded hole is further disposed on the oil seal cover 3, a bolt is further disposed in the threaded hole, and the oil seal cover 3 is fixedly disposed on the box body 1 through the bolt.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to 3, the bearing specifically includes the first bearing 2 and the second bearing 17, the first bearing 2 and the second bearing 17 are respectively disposed at two ends of the shaft 5, and when the shaft 5 rotates, the first bearing 2 and the second bearing 17 rotate.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to 3, a plurality of oil seals 4 for sealing are further disposed in the oil seal cover 3, one end of each oil seal 4, i.e., the right end in the figure, abuts against one side of the first bearing 2 away from the second bearing 17, i.e., the left side in the figure, and the periphery of each oil seal 4 abuts against the inner wall of the oil seal cover 3.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to 3, the oil seals 4 are framework oil seals, the number of the framework oil seals is two, and the two framework oil seals are arranged adjacently to each other to perform a double sealing function.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 1 to 3, the differential assembly 13 specifically includes a housing, the driven gear 14 is detachably and fixedly disposed with the housing, specifically, the driven gear 14 and the housing are both provided with bolt holes, and the bolt holes are provided with bolts, that is, the driven gear 14 and the housing are fixedly connected together through the bolts.

In another aspect, the invention also provides an agricultural machine comprising a transfer case, which is specifically the transfer case. As the agricultural machine, more specifically, a wheeled tractor is preferable.

The agricultural machine with the structure has the advantages of high-speed full-time four-wheel drive, high-speed synchronous four-wheel drive, high-speed independent rear drive, strong specific overall driving capability, heavy load and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.