Secondary reduction device of cotton picker rear axle

Abstract

The utility model provides a kind of two-stage speed reducer of cotton picker rear axle, including main reduction gearbox shell, bevel gear shaft, bearing seat and differential, the inside of the main reduction gearbox shell is provided with bevel gear shaft and differential, the bevel gear shaft is connected with differential, the bearing seat is fixedly installed in the upside and downside of main reduction gearbox shell;The differential includes large gear, differential housing, differential cover, half shaft gear, coupling block, planetary gear, planetary gear short shaft and planetary gear shaft;The sub gearbox includes reduction gearbox shell, driving gear, driven gear and output spline shaft.The utility model is matched into gear pair by large gear on differential and bevel gear shaft on main gearbox, and and driven wheel on sub gearbox, driving gear are matched into gear pair group to form two-stage speed reducer, reach the required safe operating speed.

Description

Technical Field

[0001] This utility model relates to the field of cotton harvester technology, and in particular to a two-stage reduction gear for the rear axle of a cotton harvester. Background Technology

[0002] With the increasing mechanization of modern agriculture, large-scale cotton harvesting and baling machines are particularly favored by the market. Because these large machines are bulky and heavy, their operating speed must be slowed down to maintain overall stability (their operating speed is slower than that of typical small agricultural machinery; if the speed were too high, the engine power would need to be increased, resulting in a larger engine size, higher fuel consumption, and increased manufacturing and operating costs; excessive size would also affect the safety and stability of the entire machine). To ensure that the operating speed of the cotton harvester matches its power, weight, and size, the design fully considers the output and input torque of the rear axle. The rear axle is designed as a two-stage reduction gear to meet operational requirements. Therefore, our company has designed a two-stage reduction device for the rear axle of the cotton harvester. Utility Model Content

[0003] The present invention aims to provide a two-stage reduction gear for the rear axle of a cotton harvester to overcome or at least partially solve the above-mentioned problems.

[0004] To achieve the above objectives, the technical solution of this utility model is specifically implemented as follows:

[0005] This utility model provides a two-stage reduction device for the rear axle of a cotton harvester, including a left axle housing, a drive shaft, a right axle housing, a main gearbox, and a secondary gearbox. The left and right axle housings are respectively installed on the left and right sides of the main gearbox. The drive shafts are installed inside both the left and right axle housings and are connected to the left and right sides of the main gearbox. The secondary gearbox is connected to the front of the main gearbox. The main gearbox includes a main reduction gearbox housing, a bevel gear shaft, a bearing housing, and a differential. The bevel gear shaft and the differential are installed inside the main reduction gearbox housing. The bevel gear shaft is connected to the differential. The bearing housing is fixedly installed on the upper and lower sides of the main reduction gearbox housing.

[0006] The differential includes a large gear, a differential housing, a differential cover, half-shaft gears, a connecting block, planetary gears, planetary gear short shafts, and planetary gear shafts. The bevel gear shaft meshes with the large gear. The large gear is sleeved on the differential housing. A differential cover is provided on the upper side of the differential housing. The differential cover, differential housing, and large gear are fixed by bolts. Inside the differential housing are half-shaft gears, a connecting block, planetary gears, planetary gear short shafts, and planetary gear shafts. The half-shaft gears are respectively connected to the inside of the differential housing and the differential cover. A connecting block is provided between two half-shaft gears. Planetary gear short shafts and planetary gear shafts are respectively inserted into the connecting block. Both planetary gear short shafts and planetary gear shafts are inserted into the differential housing and positioned by locating pins. Planetary gears are sleeved and fixed on both planetary gear short shafts and planetary gear shafts. The planetary gears mesh with the half-shaft gears. The differential housing and differential cover are rotatably connected by bearings and bearing seats.

[0007] The auxiliary gearbox includes a reduction gearbox housing, a drive gear, a driven gear, and an output spline shaft. The drive gear, driven gear, and output spline shaft are all housed within the reduction gearbox housing. The driven gear and drive gear are rotatably connected to the reduction gearbox housing via bearings, and the drive gear and driven gear are meshed together. The driven gear is sleeved and fixed on the output spline shaft, and the output spline shaft is connected to a bevel gear shaft.

[0008] As a further embodiment of this utility model, an oil filling hole is provided on the upper side of the main gearbox housing, and an oil drain port is provided on the lower side of the main gearbox housing.

[0009] As a further embodiment of this utility model, a magnetic plug is provided on the lower side of the main gearbox housing, and a permanent magnet is provided inside the magnetic plug for adsorbing sludge in the lubricating oil.

[0010] As a further embodiment of this utility model, the main gearbox housing is provided with a steering cylinder mounting hole for fitting and installing the steering cylinder.

[0011] As a further embodiment of this utility model, a spacer sleeve is fixedly installed on the left side of the gearbox housing, and the spacer sleeve is fitted on the output spline shaft to control the assembly distance between the auxiliary gearbox and the main gearbox.

[0012] As a further embodiment of this invention, the left end of the output spline shaft is provided with a spline, and is matched with the bevel gear shaft through the spline.

[0013] As a further embodiment of this utility model, the connecting block is provided with a connecting hole for the planetary gear shaft and the planetary gear short shaft to extend into, for assembling the planetary gear, the planetary gear short shaft and the planetary gear shaft.

[0014] This utility model provides a two-stage reduction device for the rear axle of a cotton harvester. The beneficial effect is that the large gear on the differential is matched with the bevel gear shaft on the main gearbox to form a gear pair, and is matched with the driven gear and the driving gear on the auxiliary gearbox to form a gear pair to form a two-stage reduction, so as to achieve the required safe operating speed. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial sectional view of the present invention.

[0018] Figure 3 This is a cross-sectional view of the main gearbox in this utility model.

[0019] Figure 4 This is a cross-sectional view of the differential in this utility model.

[0020] Figure 5 This is a cross-sectional view of the auxiliary gearbox in this utility model.

[0021] In the diagram: 1. Main gearbox housing; 2. Bevel gear shaft; 3. Bearing housing; 4. Differential; 5. Large gear; 6. Differential housing; 7. Differential cover; 8. Half-shaft gear; 9. Connecting block; 10. Planetary gear; 11. Planetary gear short shaft; 12. Planetary gear shaft; 13. Gearbox housing; 14. Drive gear; 15. Driven gear; 16. Output spline shaft; 101. Left axle housing; 102. Drive shaft; 103. Right axle housing; 104. Steering cylinder; 105. Tie rod; 201. Main gearbox; 301. Auxiliary gearbox. Detailed Implementation

[0022] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] See Figure 1-5This utility model provides a two-stage reduction device for the rear axle of a cotton harvester, including a left axle housing 101, a drive shaft 102, a right axle housing 103, a main gearbox 201, and a secondary gearbox 301. The left axle housing 101 and the right axle housing 103 are respectively installed on the left and right sides of the main gearbox 201. The drive shaft 102 is provided inside both the left axle housing 101 and the right axle housing 103, and the drive shaft 102 is connected to the left and right sides of the main gearbox 201. The front side of the main gearbox 201 is connected to the secondary gearbox 301. The main gearbox 201 includes a main reduction gearbox housing 131, a bevel gear shaft 2, a bearing seat 3, and a differential 4. The bevel gear shaft 2 and the differential 4 are provided inside the main reduction gearbox housing 131. The bevel gear shaft 2 is connected to the differential 4. The bearing seat 3 is fixedly installed on the upper and lower sides of the main reduction gearbox housing 131.

[0024] The differential 4 includes a large gear 5, a differential housing 6, a differential cover 7, a half-shaft gear 8, a connecting block 9, a planetary gear 10, a planetary gear short shaft 11, and a planetary gear shaft 12. A bevel gear shaft 2 meshes with the large gear 5. The large gear 5 is sleeved on the differential housing 6. The differential cover 7 is located on the upper side of the differential housing 6. The differential cover 7, the differential housing 6, and the large gear 5 are fixed together by bolts. Inside the differential housing 6 are the half-shaft gear 8, the connecting block 9, the planetary gear 10, the planetary gear short shaft 11, and the planetary gear shaft 12. 8 are respectively connected to the inside of the differential housing 6 and the differential cover 7, and a connecting block 9 is provided between the two half-shaft gears 8. Planetary gear short shaft 11 and planetary gear shaft 12 are respectively inserted into the connecting block 9. Planetary gear short shaft 11 and planetary gear shaft 12 are both inserted into the differential housing 6 and positioned by locating pins. Planetary gears 10 are sleeved and fixed on both planetary gear short shaft 11 and planetary gear shaft 12. Planetary gears 10 are meshed with half-shaft gears 8. The differential housing 6 and the differential cover 7 are rotatably connected to the bearing seat 3 through bearings.

[0025] The auxiliary gearbox 301 includes a reduction gearbox housing 13, a drive gear 14, a driven gear 15, and an output spline shaft 16. The drive gear 14, driven gear 15, and output spline shaft 16 are all disposed inside the reduction gearbox housing 13. The driven gear 15 and the drive gear 14 are rotatably connected to the reduction gearbox housing 13 through bearings, and the drive gear 14 and the driven gear 15 are meshed together. The driven gear 15 is sleeved and fixed on the output spline shaft 16, and the output spline shaft 16 is connected to the bevel gear shaft 2.

[0026] An oil filling hole is provided on the upper side of the main gearbox housing 131, and an oil drain port is provided on the lower side of the main gearbox housing 131.

[0027] A magnetic plug is also provided on the lower side of the main gearbox housing 131, and a permanent magnet is provided inside the magnetic plug to adsorb the sludge in the lubricating oil.

[0028] The main gearbox housing 131 has a mounting hole for a steering cylinder 104 for fitting and installing the steering cylinder 104.

[0029] A spacer sleeve is fixedly installed on the left side of the gearbox housing 13, and the spacer sleeve is fitted on the output spline shaft 16 to control the assembly distance between the auxiliary gearbox 301 and the main gearbox 201.

[0030] The left end of the output spline shaft 16 is provided with a spline, and it is matched with the bevel gear shaft 2 through the spline.

[0031] The connecting block 9 has a connecting hole for the planetary gear shaft 12 and the planetary gear short shaft 11 to extend into, for assembling the planetary gear 10, the planetary gear short shaft 11 and the planetary gear shaft 12.

[0032] In use, this utility model includes main components such as a left axle housing 101, a drive shaft 102, a right axle housing 103, a steering cylinder 104, a main gearbox 201, and a secondary gearbox 301. The left axle housing 101 and the right axle housing 103 each contain a drive shaft 102, and each end of the drive shaft 102 is provided with an external spline for easy connection and installation. Both ends of the steering cylinder 104 are connected to the rear axle steering knuckle by tie rods 105.

[0033] The auxiliary gearbox 301 is equipped with a spacer sleeve; the spacer sleeve is used to control the assembly distance between the gearbox and the main gearbox 201; the outer diameter of the output spline shaft 16 is provided with a gear, which matches the gear inside the driven gear 15; the other end of the output spline shaft 16 is provided with a spline, which matches the bevel gear shaft 2 of the main gearbox.

[0034] The main gearbox 201 mainly includes a main reduction gearbox housing 131, a bevel gear shaft 2, a bearing seat 3, and a differential 4. The upper part of the main gearbox 201 has a pin seat hole for connection to the main support. Each end of the pin seat hole has a main pin bushing with multiple lubrication holes (for pin lubrication). The lower part of the pin seat hole has a steering cylinder 104 mounting hole for mounting the steering cylinder 104. The lower part of the main gearbox 201 has an oil drain port and a magnetic plug. The magnetic plug contains a permanent magnet to attract impurities in the lubricating oil (the impurities adsorbed on the magnetic plug are cleaned during subsequent oil draining and maintenance). When the cotton harvester turns, the wheels on both sides are out of sync, resulting in a speed difference. To effectively solve this speed difference, the main gearbox 201 includes a differential 4 to address the aforementioned problem. The differential 4 mainly includes a large gear 5, a differential 4 housing, a differential cover 7, a half-shaft gear 8, a copper bushing, a locating pin, a planetary gear 10 washer, a connecting block 9, a planetary gear 10, a planetary gear short shaft 11, a planetary gear shaft 12, bearings, and a half-shaft gear 8 washer, etc. Both the planetary gear shaft 12 and the planetary gear short shaft 11 have a flat surface for easy subsequent installation and insertion of the locating pin. The connecting block 9 has connecting holes for the planetary gear shaft 12 and the planetary gear short shaft 11, used for assembling the planetary gear 10, the planetary gear short shaft 11, and the planetary gear shaft 12. The large gear 5 on the differential 4 is matched with the bevel gear shaft 2 on the main gearbox 201 to form a gear pair, which, together with the gear pair on the gearbox (the driven wheel and the driving gear 14 are matched to form a gear pair), forms a two-stage reduction to achieve the required operating speed.

[0035] The design of a two-stage reduction gear for the rear axle of a cotton harvester also takes into account the overall layout and operating speed requirements of the cotton harvester. The rear axle is designed as a two-stage reduction transmission (two sets of gear pairs for reduction). After multiple trial productions by our company and market feedback, the design has been confirmed to be reasonable. It is now in mass production and is worth promoting and using in the same industry.

[0036] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A two-stage reduction gear for the rear axle of a cotton harvester, comprising a left axle housing (101), a drive shaft (102), a right axle housing (103), a main gearbox (201), and a secondary gearbox (301), wherein the left axle housing (101) and the right axle housing (103) are respectively installed on the left and right sides of the main gearbox (201), and a drive shaft (102) is provided inside both the left axle housing (101) and the right axle housing (103), and the drive shaft (102) is connected to the left and right sides of the main gearbox (201), and the secondary gearbox (301) is connected to the front side of the main gearbox (201), characterized in that, The main gearbox (201) includes a main gearbox housing (13)(1), a bevel gear shaft (2), a bearing seat (3), and a differential (4). The bevel gear shaft (2) and the differential (4) are arranged inside the main gearbox housing (13)(1). The bevel gear shaft (2) is connected to the differential (4). The bearing seat (3) is fixedly installed on the upper and lower sides of the main gearbox housing (13)(1). The differential (4) includes a large gear (5), a differential housing (6), a differential cover (7), a half-shaft gear (8), a connecting block (9), a planetary gear (10), a planetary gear short shaft (11), and a planetary gear shaft (12). The bevel gear shaft (2) meshes with the large gear (5). The large gear (5) is sleeved on the differential housing (6). The differential cover (7) is provided on the upper side of the differential housing (6). The differential cover (7), the differential housing (6), and the large gear (5) are fixed by bolts. The half-shaft gear (8), the connecting block (9), the planetary gear (10), the planetary gear short shaft (11), and the planetary gear shaft (12) are provided inside the differential housing (6). The half-shaft gears (8) are respectively connected to the inside of the differential housing (6) and the differential cover (7), and a connecting block (9) is provided between the two half-shaft gears (8). A planetary gear short shaft (11) and a planetary gear shaft (12) are respectively inserted into the connecting block (9). The planetary gear short shaft (11) and the planetary gear shaft (12) are both inserted into the differential housing (6) and positioned by a locating pin. A planetary gear (10) is sleeved and fixed on the planetary gear short shaft (11) and the planetary gear shaft (12). The planetary gear (10) is meshed with the half-shaft gears (8). The differential housing (6) and the differential cover (7) are rotatably connected by bearings and bearing seats (3). The auxiliary gearbox (301) includes a gearbox housing (13), a drive gear (14), a driven gear (15), and an output spline shaft (16). The drive gear (14), driven gear (15), and output spline shaft (16) are all disposed inside the gearbox housing (13). The driven gear (15) and drive gear (14) are rotatably connected to the gearbox housing (13) through bearings, and the drive gear (14) and driven gear (15) are meshed together. The driven gear (15) is sleeved and fixed on the output spline shaft (16), and the output spline shaft (16) is connected to the bevel gear shaft (2).

2. The two-stage speed reduction device of a cotton picker rear axle according to claim 1, characterized in that, The main gearbox housing (13)(1) has an oil filling hole on its upper side and an oil drain port on its lower side.

3. A two-stage speed reduction device for a cotton picker rear axle as set forth in claim 2, characterized in that, A magnetic plug is also provided on the lower side of the main gearbox housing (13)(1), and a permanent magnet is provided inside the magnetic plug for adsorbing sludge in the lubricating oil.

4. The two-stage speed reduction device of a cotton picker rear axle according to claim 1, characterized in that, The main gearbox housing (13)(1) has a steering cylinder (104) mounting hole for the steering cylinder (104) to be fitted and installed.

5. The two-stage speed reduction device of a cotton picker rear axle according to claim 1, characterized in that, A spacer sleeve is fixedly installed on the left side of the gearbox housing (13), and the spacer sleeve is fitted on the output spline shaft (16) to control the assembly distance between the auxiliary gearbox (301) and the main gearbox (201).

6. The two-stage speed reduction device of a cotton picker rear axle according to claim 1, characterized in that, The left end of the output spline shaft (16) is provided with a spline, and is matched with the bevel gear shaft (2) through the spline.

7. The two-stage speed reduction device of a cotton picker rear axle according to claim 1, characterized in that, The connecting block (9) has connecting holes for the planetary gear shaft (12) and the planetary gear short shaft (11) to extend into, for assembling the planetary gear (10), the planetary gear short shaft (11) and the planetary gear shaft (12).

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