CN218000342U

CN218000342U - Transfer case of cotton picker

Info

Publication number: CN218000342U
Application number: CN202221724151.8U
Authority: CN
Inventors: 赵浩; 武建军; 郭学军; 刘子建; 胡加辉; 袁鑫; 黄帅师; 欧俊辛
Original assignee: Zhuzhou Gear Co Ltd
Current assignee: Zhuzhou Gear Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-12-09
Anticipated expiration: 2032-07-06

Abstract

The utility model relates to the technical field of transfer cases of mechanical equipment, in particular to a transfer case of a cotton picker, which comprises a case body, a power input assembly and a plurality of power output ends, wherein a first power output end drives a fan to work, a second power output end drives a cotton picking head to pick cotton, a third power output end drives a gear pump and other working pumps to work, and the cotton picker travels through a fourth power output end; one end of an input shaft in the input assembly is connected with the engine, and the other end of the input shaft is connected with a power output end III; a hydraulic clutch is arranged at one position of the power output end and comprises a friction plate set, an input shaft and a plurality of supporting bearings, when the clutch is filled with hydraulic oil, torque is transmitted to the output shaft through the friction plate set and drives the fan to work, and the output shaft is stably supported through the plurality of bearings. The utility model discloses can transmit power for a plurality of power take off end in order to satisfy cotton picker's operating mode requirement, its clutch has good axial stability performance when bearing big axial force simultaneously.

Description

Transfer case of cotton picker

Technical Field

The utility model relates to a cotton picker transfer case belongs to mechanical equipment transfer case technical field.

Background

With the gradual improvement of the mechanization degree, the number of cotton pickers required by cotton picking in China is gradually increased at present, but due to the influence of technical barriers, most cotton pickers are imported from foreign countries, and even key parts in a part of domestic complete machines depend on the foreign countries, so that the development of the domestic cotton picking industry is greatly restrained. The transfer case is used as a core transmission part of the cotton picker and is mainly used for transmitting the power of an engine to all working parts so as to meet the normal working requirement of the whole machine. If the cotton picker is in a picking working condition, an engine of the cotton picker drives a vehicle to run, related hydraulic parts are driven to work through a hydraulic source, and meanwhile the cotton picker needs to be driven to pick, so that the transfer case directly determines the overall working performance and working efficiency of the cotton picker, and once the transfer case fails, the whole cotton picker can be paralyzed or even cannot work.

In view of the importance of the transfer case in the cotton picker, the long delivery cycle and the high price of the transfer case imported from abroad, the transfer case of the cotton picker has been extensively researched, developed and produced in China at present, and through patent retrieval, the transfer case of the cotton picker is related to the following patent scheme:

1. the patent number is "201921715371.2", the patent name is "transfer case assembly with hydraulic clutch" utility model patent, this transfer case assembly includes clutch part, the input shaft, output shaft and transfer case part, the transfer gear of transfer case part is as the power takeoff mouth of normal mesh, the output shaft is as the main power takeoff mouth, by clutch part control work and separation, the operating condition of clutch passes through hydro-cylinder and vice subassembly of friction and converts, vice subassembly of friction is small, the moment of torsion that can transmit is big, high reliability, it is convenient to maintain.

2. The invention has the patent number of '202110351199.2' and the patent name of 'a transfer case for a split cotton picker transmission', and the scheme designs the clutch component which needs frequent maintenance in a modularized way, can take the clutch component out of the transfer case body under the condition that the transfer case does not need to be detached from the whole machine, and can put the clutch component back into the transfer case after the friction plate component is replaced.

3. The patent number is "202122451272.1", and the patent name is the utility model patent of "a quick detach clutch transfer case", and the transfer case in this patent can be high-efficient, accomplish the dismouting operation of clutch in the transfer case conveniently, reduces artifical work load, improves dismouting efficiency.

However, the transfer case in the patent has the problems of not compact structure, poor axial stability and the like, so how to design the transfer case of the cotton picker, which can meet the working condition requirement of simultaneous working of multiple output ports of the cotton picker and has the advantages of compact structure, stable clutch axial performance and the like, is a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transfer case of cotton picker can transmit power for a plurality of power take off end in order to satisfy cotton picker's operating mode requirement, and its clutch has good axial stability performance when bearing big axial force simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a transfer case of a cotton picker comprises a case body, a power input assembly and a plurality of power output ends, wherein the power input assembly and the power output ends are arranged in the case body; the power input assembly is connected with a first power output assembly and a hydraulic clutch integrated on the first power output assembly, and the first power output assembly comprises a first output gear connected with the input gear; the hydraulic clutch comprises a friction plate group, the friction plate group comprises outer friction plates and inner friction plates which are arranged at intervals, the outer friction plates are connected with the first output gear, and the inner friction plates are connected with an output shaft which can drive the first power output end of the cotton picker to work; when the clutch is filled with hydraulic oil, the input gear drives the output gear to run and the torque is transmitted to the output shaft by the inner friction plate and the outer friction plate; and one side of the input shaft, which is far away from the engine, is connected with a power output end III.

Preferably, the two ends of the input shaft are respectively provided with a first external spline and a first internal spline, and the first external spline is provided with an elastic coupling for filtering vibration and impact of the engine in a matching manner; and the first internal spline is provided with a spline housing and is connected with the output member of the third power output end through the spline housing.

Preferably, the first output gear is provided with a second internal spline, the outer friction plate is provided with a second external spline, and the first output gear and the outer friction plate are in rigid connection through the second internal spline and the second external spline; the inner friction plate is provided with a third inner spline, the output shaft is provided with a third outer spline, and the output shaft and the inner friction plate are in rigid connection through the third inner spline and the third outer spline.

Preferably, the hydraulic clutch comprises a rear shell arranged on one side, far away from the power output end of the cotton picker, of the output shaft, a first bearing is arranged on one side, close to the rear shell, of the friction plate set, and the first output gear is fixed on the output shaft through the first bearing.

Preferably, one side of the first bearing close to the rear shell is provided with a second bearing, and the outer side of the second bearing comprises a bearing cover connected with the rear shell; one side of the friction plate set, which is far away from the first bearing, is provided with a first bearing seat and a third bearing, and a first elastic piece is further arranged in the first bearing seat.

Preferably, a bearing IV is arranged on one side, far away from the bearing seat I, of the bearing III, and a piston piece is arranged between the bearing III and the bearing IV; and one side of the bearing IV, which is far away from the piston part, is sequentially provided with an oil seal seat and a bearing seat II.

Preferably, a pre-compressed elastic element II is arranged on the end face between the bearing IV and the oil seal seat, and the axial clearance of the bearing is automatically adjusted according to the axial force borne by the output shaft through the elastic element II.

Preferably, a second power output assembly comprising an output gear II is arranged between the power input assembly and the first power output assembly, and the output gear I is connected with the input gear through the output gear II; and a second power output end of the second power output assembly is used for driving a cotton picking head of the cotton picker to work.

Preferably, a fourth power output assembly comprising an output gear IV is arranged on one side, away from the output gear II, of the power input assembly, and a power output end IV of the fourth power output assembly is used for driving the cotton picker to walk.

Preferably, the rotary direction of the first output gear is the same as that of the engine, and the rotary directions of the second output gear and the fourth output gear are opposite to that of the engine.

The beneficial effects of the utility model are that:

1. the transfer case of the utility model can input the power of the engine through one path of power, and then convert the input one path of power into the multi-path power required by the cotton picker through the transfer case and output the power to meet the working requirement of the cotton picker; the multi-path power output is specifically a power output end I connected with a belt pulley to drive a fan to work, a power output end II connected with a cotton picking head of the cotton picker to drive cotton picking to work, a power output end III connected with a gear pump or other working pumps, and a power output end IV connected with a cotton picking machine walking mechanism to drive the cotton picker to walk; one part of the power output end is provided with a hydraulic clutch, and the power can be separated or combined through the hydraulic clutch.

2. The input assembly in the utility model has compact structure, which can save space while ensuring the working performance; wherein the input shaft has a power input end (connected with the power output end of the engine) and a power output end (connected with the power output end III of the cotton picker); be equipped with internal spline and spline housing on the input shaft, the accessible is changed the spline housing and is realized the quick replacement of port and satisfy the demand of different customers or different cotton picking operating modes with the different working part of matching specification.

3. Three tapered roller bearings (a bearing II, a bearing III and a bearing IV) are arranged on an output shaft in the clutch, when the whole output assembly I bears a large axial force, the operation of the output assembly I can be supported through the three tapered roller bearings, and the integral axial stability of the output shaft and the first power output assembly is guaranteed; meanwhile, a pre-compressed steel wave spring (an elastic part II) is arranged on the end face of the bearing IV, and the gap of the bearing can be automatically adjusted according to the axial force borne by the output assembly I, so that the gap of the tapered roller bearing is always in an optimal state, and the axial stability of the output shaft is further ensured.

Drawings

Fig. 1 is a schematic overall structure diagram of the transfer case.

FIG. 2 is a cross-sectional view of the transfer case.

Fig. 3 is a schematic structural diagram of an input assembly.

Fig. 4 is a schematic structural diagram of the hydraulic clutch.

Fig. 5 is a partial enlarged view of fig. 4 at M.

Fig. 6 is a partial enlarged view of fig. 4 at N.

FIG. 7 is a schematic diagram of the power take-off of the transfer case.

Description of reference numerals:

1. a first power output end; 2. a second power output end; 3. a power output end III; 4. a power output end is four; 5. an input gear; 6. an input shaft; 7. an elastic coupling; 8. a first external spline; 9. a first internal spline; 10. a spline housing; 11. a first output gear; 12. an outer friction plate; 13. an inner friction plate; 14. an output shaft; 15. a rear housing; 16. a first bearing; 17. a second bearing; 18. a bearing cap; 19. a third bearing; 20. a first elastic part; 21. a first bearing seat; 22. a bearing IV; 23. a piston member; 24. an oil seal seat; 25. a second bearing seat; 26. a second elastic part; 27. a second output gear; 28. an output gear IV; 29. a hydraulic clutch; 30. a belt pulley; 31. a framework oil seal; 32. a clutch control oil port; 34. a box body.

Detailed Description

The present invention is described in further detail below with reference to fig. 1-7.

A transfer case of a cotton picker is shown in figure 1 and comprises a case body 34, a power input assembly and a plurality of power output ends, wherein the power input assembly is arranged in the case body 34, and the power output ends specifically comprise a power output end I1, a power output end II 2, a power output end III 3 and a power output end IV 4; the power output end I1 is connected with the belt pulley 30 and drives the fan to operate by driving the belt pulley 30 to move; the second power output end 2 is connected with the cotton picking head and can drive the cotton picking head to pick cotton; the power output end III 3 is connected with a working pump required by a gear pump or other cotton pickers, is specifically arranged according to actual working conditions and is used for driving a transfer case radiator to work or lubricating a clutch; and the power output end four 4 is connected with the walking pump and used for driving the cotton picker to walk.

As shown in fig. 2 and 3, the power input assembly includes an input gear 5 and an input shaft 6, the input gear 5 is linked with the engine through the input shaft 6; the input shaft 6 comprises an input end connected with the engine and an output end connected with the power output end III 3, namely, one side of the input shaft 6, which is far away from the engine, is connected with the power output end III 3, and the input gear 5 is positioned between the input end and the output end of the input shaft 6; the input end and the output end of the input shaft 6 are respectively provided with a first external spline 8 and a first internal spline 9, the first external spline 8 is provided with an elastic coupling 7 in a matching manner, and the elastic coupling 7 is positioned between the input end of the input shaft 6 and the engine and is used for filtering vibration impact generated during the operation of the engine so as to protect the engine and the transfer case and prolong the service life of the engine and the transfer case; be equipped with spline housing 10 on internal spline 9 and be connected with three 3 gear pump or other working pumps of power take off end through spline housing 10, to different working pumps, only need to change the spline housing 10 that matches with it can, can realize the quick replacement of different working pump interfaces.

As shown in fig. 1 and 2, a first power output assembly and a hydraulic clutch 29 integrated on the first power output assembly are connected to the power input assembly, and the first power output assembly comprises a first output gear 11 connected with the input gear 5; a second power output assembly comprising an output gear II 27 is arranged between the power input assembly and the first power output assembly, the output gear I11 is further connected with the input gear 5 through the output gear II 27, and a power output end II 2 is a power output port of the second power output assembly; a fourth power output assembly comprising an output gear four 28 is arranged on one side, away from the output gear two 27, of the power input assembly, and a power output end four 4 is a power output port of the fourth power output assembly; as shown in fig. 7, the rotation direction S1 of the first output gear 11 at the first power output end 1 is the same as the rotation direction S3 of the engine, and the rotation direction S3 of the input gear 5 at the third power output end 3 is the same as the rotation direction S3 of the engine, that is, the rotation direction S1 of the first output gear 11 is the same as the rotation direction S3 of the input gear 5; the rotational direction S2 of the output gear two 27 at the power output end two 2 and the rotational direction S4 of the output gear four 28 at the power output end four 4 are opposite to the rotational direction S3 of the engine (i.e., the rotational direction S3 of the input gear 5).

As shown in fig. 4 to 6, the hydraulic clutch 29 includes a friction plate set including a plurality of outer friction plates 12 and inner friction plates 13 arranged at intervals; the output gear I11 is provided with a second internal spline, the outer friction plate 12 is provided with a second external spline, and the output gear I11 and the outer friction plate 12 are in rigid connection through the second internal spline and the second external spline; an output shaft 14 capable of driving the power output end I1 of the cotton picker to work is connected to the inner friction plate 13, a third inner spline is arranged on the inner friction plate 13, a third outer spline is arranged on the output shaft 14, and the output shaft 14 and the inner friction plate 13 are in rigid connection through the third inner spline and the third outer spline; when the hydraulic clutch 29 is filled with hydraulic oil, the second output gear 27 and the first output gear 11 are driven to rotate through the input gear 5, and torque is transmitted to the output shaft 14 through the inner friction plate and the outer friction plate.

The hydraulic clutch 29 comprises a rear shell 15 arranged on one side, far away from the power output end 1 of the cotton picker, of the output shaft 14, a first bearing 16 is arranged on one side, close to the rear shell 15, of the friction plate set, the first output gear 11 is fixed on the output shaft 14 through the first bearing 16, and the first bearing 16 is a deep groove ball bearing; a second bearing 17 positioned on the output shaft 14 is arranged on one side, close to the rear shell 15, of the first bearing 16, and a bearing cover 18 connected with the rear shell 15 is arranged on the outer side of the second bearing 17; a first bearing seat 21 and a third bearing 19 are arranged on one side, away from the first bearing 16, of the friction plate set, a first elastic part 20 is further arranged in the first bearing seat 21, the first elastic part 20 is a telescopic spring, when the hydraulic clutch 29 works, the first spring part 20 extrudes and enables the outer friction plate 12 and the inner friction plate 13 to be extruded to form a whole, when the hydraulic clutch 29 does not work, the first spring part 20 rebounds and restores to the original position, and the outer friction plate 12 and the inner friction plate 13 are separated; a bearing fourth 22 is arranged on one side, away from the bearing seat first 21, of the bearing third 19, and a piston piece 23 is arranged between the bearing third 19 and the bearing fourth 22; and one side of the bearing IV 22, which is far away from the piston part 23, is sequentially provided with an oil seal seat 24 and a bearing seat II 25, and a framework oil seal 31 is arranged between the oil seal seat 24 and the output shaft 14.

The second bearing 17, the third bearing 19 and the fourth bearing 22 are all tapered roller bearings, and bear large axial force when the third power output assembly works, and the three tapered roller bearings can bear large axial force so as to support the operation of the whole third power output assembly. Because the tapered roller bearing needs to adjust the clearance, but the third power output assembly has a plurality of parts, the precision of a size chain is difficult to ensure, and the axial force difference between the working and non-working of the hydraulic clutch 29 is large, so that the clearance among the second bearing 17, the third bearing 19 and the fourth bearing 22 is difficult to be well controlled; therefore, the pre-compressed elastic member two 26 is arranged on the end surface between the bearing four 22 and the oil seal seat 24, the bearing four 22 in this embodiment is a steel wave spring, the steel wave spring is in a pre-compression state, and the axial clearance of the tapered roller bearing can be automatically adjusted through the elastic member two 26 according to the axial force borne by the output shaft 14, so that the clearance of the tapered roller bearing is always in an optimal state, and the overall operation stability of the output shaft 14 and the third power output assembly is ensured.

The implementation mode is as follows:

engaged state of inner and outer friction plates (when hydraulic clutch 29 is operated): the box body 34 comprises a clutch control oil port 32 shown in fig. 1, when hydraulic oil with certain pressure is fed from the clutch control oil port 32 as required, the hydraulic oil pushes the piston piece 23 in fig. 4 to the left, further pushes the bearing III 19 and the bearing seat I21 to move to the left and applies certain pressure to the outer friction plate 12 and the inner friction plate 13 so as to press the inner friction plate and the outer friction plate tightly, at the moment, the inner friction plate and the outer friction plate form a whole due to friction force, and the elastic piece I20 is compressed; when the input gear 5 drives the second output gear 27 and the first output gear 11 to operate, the torque is transmitted to the outer friction plate 12 through the second internal spline of the first output gear 11, the outer friction plate 12 transmits the torque to the inner friction plate 13 through friction force, the inner friction plate 13 transmits the torque to the output shaft 14, so that the belt pulley 30 is driven to operate, and the power output end 1 starts to operate.

Inner and outer friction plate disengaged state (when the hydraulic clutch 29 is not in operation): when the pressure of the oil port is released, the first elastic piece 20 pushes the first bearing seat 21, the third bearing 19 and the piston piece 23 to the right, at the moment, the outer friction plate 12 and the inner friction plate 13 are not stressed any more, and the inner friction plate and the outer friction plate do not generate friction force and can move relatively; when the first output gear 11 runs at a high speed, the output shaft 14 is in a static state, and the first power output end 1 stops working.

Meanwhile, when the engine drives the input gear 5 to operate, the input gear 5 drives the output gear two 27 and the output gear four 28 to operate in the opposite rotation direction of the input gear 5, and the power output end two 2 and the power output end four 4 start to operate; and simultaneously, the input shaft 5 drives the power output end three 3 to start working.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications without inventive contribution to the embodiments of the present invention as needed after reading the present specification, but all the embodiments of the present invention are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A transfer case of a cotton picker comprises a case body (34), a power input assembly and a plurality of power output ends, wherein the power input assembly and the power output ends are arranged in the case body (34), the transfer case is characterized in that the power input assembly comprises an input gear (5) and an input shaft (6), and the input gear (5) is linked with an engine through the input shaft (6); the power input assembly is connected with a first power output assembly and a hydraulic clutch (29) integrated on the first power output assembly, and the first power output assembly comprises a first output gear (11) connected with the input gear (5); the hydraulic clutch (29) comprises a friction plate set, the friction plate set comprises an outer friction plate (12) and an inner friction plate (13) which are arranged at intervals, the outer friction plate (12) is connected with the first output gear (11), and the inner friction plate (13) is connected with an output shaft (14) which can drive the first power output end (1) of the cotton picker to work; when hydraulic oil is introduced into the hydraulic clutch (29), the input gear (5) drives the output gear I (11) to operate and torque is transmitted to the output shaft (14) by the inner friction plate and the outer friction plate; and one side of the input shaft (6) far away from the engine is connected with a power output end III (3).

2. The transfer case of the cotton picker according to claim 1, wherein an external spline I (8) and an internal spline I (9) are respectively arranged at two ends of the input shaft (6), and an elastic coupling (7) for filtering vibration and impact of the engine is arranged on the external spline I (8) in a matching manner; the first internal spline (9) is provided with a spline housing (10) and is connected with the output piece of the third power output end (3) through the spline housing (10).

3. The transfer case of the cotton picker according to claim 2, wherein a second internal spline is arranged on the first output gear (11), a second external spline is arranged on the outer friction plate (12), and the first output gear (11) and the outer friction plate (12) are in rigid connection through the second internal spline and the second external spline; the inner friction plate (13) is provided with a third inner spline, the output shaft (14) is provided with a third outer spline, and the output shaft (14) and the inner friction plate (13) are in rigid connection through the third inner spline and the third outer spline.

4. The transfer case of the cotton picker according to claim 3, wherein the hydraulic clutch (29) comprises a rear housing (15) arranged on the side of the output shaft (14) far away from the power output end I (1) of the cotton picker, a first bearing (16) is arranged on the side of the friction plate group close to the rear housing (15), and the first output gear (11) is fixed on the output shaft (14) through the first bearing (16).

5. The transfer case of the cotton picker according to claim 4, wherein one side of the first bearing (16) close to the rear shell (15) is provided with a second bearing (17), and the outer side of the second bearing (17) comprises a bearing cover (18) connected with the rear shell (15); one side of the friction plate group, which is far away from the bearing I (16), is provided with a bearing seat I (21) and a bearing III (19), and an elastic piece I (20) is further arranged in the bearing seat I (21).

6. The transfer case of the cotton picker according to claim 5, wherein a fourth bearing (22) is arranged on the side, away from the first bearing seat (21), of the third bearing (19), and a piston member (23) is arranged between the third bearing (19) and the fourth bearing (22); and one side of the bearing IV (22) far away from the piston piece (23) is sequentially provided with an oil seal seat (24) and a bearing seat II (25).

7. The transfer case of the cotton picker according to claim 6, wherein a second pre-compressed elastic member (26) is provided on the end surface between the bearing four (22) and the oil seal seat (24), and the axial clearance of the bearing is automatically adjusted by the second elastic member (26) according to the axial force borne by the output shaft (14).

8. The transfer case of a cotton picker according to any one of claims 1-7, wherein a second power output assembly including an output gear two (27) is provided between said power input assembly and first power output assembly, the output gear one (11) being connected to the input gear (5) through the output gear two (27); and a second power output end (2) of the second power output component is used for driving a cotton picking head of the cotton picker to work.

9. The transfer case of the cotton picker according to claim 8, wherein the side of the power input assembly remote from the second output gear (27) is provided with a fourth power output assembly comprising a fourth output gear (28), the power output end (4) of the fourth power output assembly is used for driving the cotton picker to walk.

10. The transfer case of a cotton picker according to claim 9, wherein said first output gear (11) is turned in the same direction as the engine and second (27) and fourth (28) output gears are turned in the opposite direction to the engine.