Differential fertilization gearbox

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a differential fertilization gearbox, which comprises a box body, a power input mechanism, a fertilization transmission mechanism, a soil discharging transmission mechanism and a walking transmission mechanism, and the walking transmission mechanism is provided with a first walking shaft, a second walking shaft, a third walking shaft and a differential mechanism. The differential mechanism comprises a differential mechanism shell, a first variable gear, a second variable gear and a third variable gear, the first variable gear, the second variable gear and the third variable gear are arranged on the differential mechanism shell, a fast and slow reverse gear switching gear is arranged on the first walking shaft, the second walking shaft comprises a left half shaft and a right half shaft, the left half shaft and the right half shaft are connected to the two sides of the differential mechanism, and a reverse gear transmission gear is arranged on the third walking shaft. The differential fertilization gearbox integrates a transmission mechanism for fertilization, soil discharge and walking, can independently control and drive the fertilizer applicator to walk, fertilize and discharge soil, can advance and retreat, is convenient to turn during operation, and improves the working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a differential fertilizer transmission. Background Technology

[0002] Existing fertilizer applicator gearboxes include a housing containing a power input shaft and an output shaft for fertilization, soil dispensing, and movement. The movement output shaft, along with multiple gears, forms the movement transmission mechanism. This mechanism is structurally designed with only two forward gears. Fewer gears result in limited gearbox functionality, meaning the fertilizer applicator can only move forward, not backward. This limited gearbox leads to low efficiency and high fuel consumption during operation. Furthermore, fertilizer applicators require frequent turning, which is difficult due to the similar rotational speed on both sides. Manual turning requires significant physical effort. Utility Model Content

[0003] The purpose of this invention is to provide a differential fertilizer transmission to overcome the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a differential fertilization gearbox, including a housing, a power input mechanism, a fertilization transmission mechanism, a soil discharging transmission mechanism, and a travel transmission mechanism disposed within the housing. The travel transmission mechanism includes a first travel shaft, a second travel shaft, a third travel shaft, and a differential. The differential includes a differential housing and a first gear, a second gear, and a third gear disposed on the differential housing. A fast / slow / reverse gear is disposed on the first travel shaft. The second travel shaft includes a left half-shaft and a right half-shaft, which are connected to both sides of the differential. The three traveling shafts are equipped with a reverse gear, and the third gear of the differential meshes with the reverse gear. The fast / slow reverse gear switching gear can be driven by a shift fork to move axially along the first traveling shaft. The fast / slow reverse gear switching gear can mesh with the first gear, the second gear, and the reverse gear of the differential. When the fast / slow reverse gear switching gear meshes with the first gear of the differential, it is switched to the slow traveling gear; when it meshes with the second gear of the differential, it is switched to the fast traveling gear; and when it meshes with the reverse gear, it is switched to the reverse traveling gear.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] As a further improvement to the above technical solution, the differential housing is provided with shaft holes on both sides along the axial direction, and the first gear, the second gear and the third gear are arranged circumferentially on the outer circumferential surface of the differential housing and integrally formed with the differential housing.

[0007] As a further improvement to the above technical solution, the differential housing is provided with a left half-shaft gear, a planetary gear shaft, a planetary gear and a right half-shaft gear. The planetary gear is mounted on the planetary gear shaft and can rotate freely. The left half-shaft and the right half-shaft pass through the shaft holes on both sides of the differential housing and are respectively fitted into the left half-shaft gear and the right half-shaft gear through spline gears. The two sides of the planetary gear mesh with the left half-shaft gear and the right half-shaft gear to form a differential transmission system.

[0008] As a further improvement to the above technical solution, the power input mechanism includes a first transmission shaft and a second transmission shaft rotatably mounted on both sides of the housing via bearings. The first transmission shaft is equipped with a first-axis transmission gear, and the second transmission shaft is equipped with a second-axis transmission gear, transmission shaft teeth, and a soil-releasing gear. The second-axis transmission gear meshes with the first-axis transmission gear, and the soil-releasing gear can be driven to move axially along the second transmission shaft via a shift fork. The first travel shaft is equipped with a travel transmission gear, which meshes with the transmission shaft teeth on the second transmission shaft.

[0009] As a further improvement to the above technical solution, the fertilizer transmission mechanism includes a fertilizer shaft that is rotatably mounted on both sides of the housing via bearings. The fertilizer shaft is equipped with a fertilizer transmission gear and a fertilizer gear shifting gear. The fertilizer transmission gear meshes with the transmission shaft gear on the second transmission shaft. The fertilizer gear shifting gear can be driven to move axially along the fertilizer shaft via a shift fork.

[0010] As a further improvement to the above technical solution, the fertilization transmission mechanism also includes two fertilization shafts rotatably mounted on both sides of the housing via bearings. The two fertilization shafts are equipped with a fast fertilization gear and a slow fertilization gear. The fertilization gear shifting gear can mesh with the fast fertilization gear and the slow fertilization gear. The fertilization gear shifting gear is a double gear. When the small gear of the fertilization gear shifting gear meshes with the slow fertilization gear, it switches to the slow fertilization gear; when the large gear of the fertilization gear shifting gear meshes with the fast fertilization gear, it switches to the fast fertilization gear.

[0011] As a further improvement to the above technical solution, the soil discharge transmission mechanism includes a first cutter shaft and a second cutter shaft rotatably mounted on both sides of the housing via bearings. The first cutter shaft is equipped with a soil discharge transmission gear and a drive sprocket, while the second cutter shaft is equipped with a driven sprocket. One end of the second cutter shaft is connected to a working tool for discharging soil. A transmission chain is connected between the drive sprocket and the driven sprocket. The soil discharge transmission gear can mesh with the soil discharge gear. When the soil discharge transmission gear meshes with the soil discharge gear, soil discharge operation is performed.

[0012] The beneficial effects of this utility model are as follows: The differential gearbox housing is equipped with a differential. The first gear of the differential engages with the small gear of the fast / slow / reverse shift gear to switch to the slow driving gear; the second gear engages with the large gear of the fast / slow / reverse shift gear to switch to the fast driving gear; and the third gear engages with the large gear of the fast / slow / reverse shift gear and the reverse transmission gear to switch to the reverse driving gear. By connecting the differential to the left and right half-shafts, the speed difference between the inner and outer wheels can be adjusted. Regardless of the gear in which the fertilizer applicator travels, when turning, the differential causes the wheels on both sides to rotate at different speeds, avoiding tire slippage or lateral friction caused by the same speed. This differential gearbox allows the fertilizer applicator to move forward and backward, and facilitates turning during operation, improving work efficiency. The differential gearbox integrates the transmission mechanisms for fertilization, soil dispensing, and travel, making the overall structure compact and enabling independent control of the fertilizer applicator's travel, fertilization, and soil dispensing. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the differential fertilization gearbox provided in a preferred embodiment of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of the fertilizer transmission mechanism in a differential fertilizer gearbox;

[0016] Figure 3 yes Figure 2 A schematic diagram of the soil discharge transmission mechanism of the differential fertilizer gearbox in the system;

[0017] Figure 4 yes Figure 2 A schematic diagram of the walking transmission mechanism of the differential fertilizer gearbox in the system;

[0018] Figure 5 yes Figure 4 A schematic diagram of the differential housing and each gear in the transmission;

[0019] In the diagram: 10. Housing; 21. Drive shaft 1; 211. Drive gear for shaft 1; 22. Drive shaft 2; 221. Drive gear for shaft 2; 222. Drive shaft gear; 223. Soil discharge gear; 31. Fertilizer shaft 1; 311. Fertilizer drive gear; 312. Fertilizer gear shifting gear; 32. Fertilizer shaft 2; 321. Fast fertilizer gear; 322. Slow fertilizer gear; 41. Cutter shaft 1; 411. Soil discharge drive gear; 412. Drive sprocket; 413. Drive chain; 42. Cutter shaft 2; 421 51. Driven sprocket; 511. Travel shaft 1; 512. Travel transmission gear; 513. Fast / slow / reverse gear switching gear; 52. Travel shaft 2; 524. Left half shaft; 525. Right half shaft; 53. Differential; 536. Differential housing; 537. First gear shift gear; 538. Second gear shift gear; 54. Third gear shift gear; 55. Left half shaft gear; 56. Planetary gear shaft; 57. Planetary gear; 58. Right half shaft gear; 59. Shaft hole; 50. Travel shaft 3; 51. Reverse transmission gear. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 5 As shown, a preferred embodiment of the present invention provides a differential fertilization gearbox, including a housing 10, a power input mechanism, a fertilization transmission mechanism, a soil discharging transmission mechanism, and a walking transmission mechanism disposed within the housing 10.

[0024] The power input mechanism includes a transmission shaft 21 and a transmission shaft 22 rotatably mounted on both sides of the housing 10 via bearings. A transmission gear 211 is provided on the transmission shaft 21, and a transmission gear 221, a transmission shaft gear 222, and a soil-discharging gear 223 are provided on the transmission shaft 22. The transmission gear 221 meshes with the transmission gear 211, and the soil-discharging gear 223 can be driven to move axially along the transmission shaft 22 via a shift fork.

[0025] The fertilization transmission mechanism includes a fertilization shaft 31 and a fertilization shaft 32 rotatably mounted on both sides of the housing 10 via bearings. The fertilization shaft 31 is equipped with a fertilization transmission gear 311 and a fertilization gear shifting gear 312. The fertilization transmission gear 311 meshes with the transmission shaft gear 222 on the fertilization shaft 22. The fertilization shaft 32 is equipped with a fertilization fast gear 321 and a fertilization slow gear 322. The fertilization gear shifting gear 312 can be driven to move axially along the fertilization shaft 31 by a shift fork. The fertilization gear shifting gear 312 can mesh with the fertilization fast gear 321 and the fertilization slow gear 322. The fertilization gear shifting gear 312 is a double gear. When the small gear of the fertilization gear shifting gear 312 meshes with the fertilization slow gear 322, it switches to the fertilization slow gear; when the large gear of the fertilization gear shifting gear 312 meshes with the fertilization fast gear 321, it switches to the fertilization fast gear.

[0026] The soil-discharging transmission mechanism includes a first cutter shaft 41 and a second cutter shaft 42 rotatably mounted on both sides of the housing 10 via bearings. The first cutter shaft 41 is equipped with a soil-discharging transmission gear 411 and a drive sprocket 412. The second cutter shaft 42 is equipped with a driven sprocket 421. One end of the second cutter shaft 42 is connected to a working tool for discharging soil. A transmission chain 413 is connected between the drive sprocket 412 and the driven sprocket 421. The soil-discharging transmission gear 411 can mesh with the soil-discharging gear 223. When the soil-discharging transmission gear 411 meshes with the soil-discharging gear 223, soil discharging operation is performed.

[0027] The travel transmission mechanism includes a first travel shaft 51, a second travel shaft 52, and a third travel shaft 54 ​​rotatably mounted on the housing 10 via bearings, and a differential 53 connected to the second travel shaft 52. The third travel shaft 54 ​​is provided with a reverse gear 541, and the first travel shaft 51 is provided with a travel transmission gear 511 and a fast / slow reverse gear switching gear 512. The fast / slow reverse gear switching gear 512 is a double gear, and the travel transmission gear 511 meshes with the transmission shaft gear 222 on the second travel shaft 22.

[0028] The differential 53 includes a differential housing 530 and a first gear 531, a second gear 532 and a third gear 533 disposed on the differential housing 530. The differential housing 530 includes left and right parts, which are interlocked and fixed by screws. Shaft holes 538 are provided on both sides of the differential housing 530 along the axial direction. The first gear 531, the second gear 532 and the third gear 533 are disposed circumferentially on the outer circumferential surface of the differential housing 530 and are integrally formed with the differential housing 530. The third gear 533 of the differential 53 meshes with the reverse gear 541.

[0029] The travel axle 52 includes a left half-shaft 521 and a right half-shaft 522, which are connected to both sides of the differential 53. Inside the differential housing 530, there is a left half-shaft gear 534, a planetary gear shaft 535, a planetary gear 536, and a right half-shaft gear 537. The planetary gear 536 is mounted on the planetary gear shaft 535 and can rotate freely. The left half-shaft 521 and right half-shaft 522 pass through the shaft holes 538 on both sides of the differential housing 530 and are respectively fitted into the left half-shaft gear 534 and right half-shaft gear 537 via splined gears. The two sides of the planetary gear 536 mesh with the left half-shaft gear 534 and right half-shaft gear 537 to form a differential transmission system. When the fertilizer applicator turns, the outer wheel needs to travel a longer arc path than the inner wheel. The differential 53 allows the outer wheel to rotate faster while the inner wheel rotates slower, so that the two wheels rotate at different speeds, avoiding tire slippage or lateral friction caused by the same rotation speed.

[0030] The fast / slow reverse gear shifting gear 512 can be driven by a shift fork to move axially along the travel shaft 51. The fast / slow reverse gear shifting gear 512 can mesh with the first gear 531, the second gear 532 and the reverse transmission gear 541 of the differential 53. When the pinion of the fast / slow reverse gear shifting gear 512 meshes with the first gear 531 of the differential 53, it is switched to the slow travel gear position; when the large gear of the fast / slow reverse gear shifting gear 512 meshes with the second gear 532 of the differential 53, it is switched to the fast travel gear position; when the large gear of the fast / slow reverse gear shifting gear 512 meshes with the reverse transmission gear 541, it is switched to the reverse travel gear position.

[0031] When using this invention, the aforementioned differential fertilizer transmission is installed on the fertilizer applicator. The engine is started, and the engine transmits power to the differential fertilizer transmission, thereby driving the fertilizer applicator to operate. The shift fork drives the fertilization gear shifting gear 312 to move axially along the fertilization shaft 31, so that the fertilization gear shifting gear 312 meshes with the fertilization fast gear 321 or the fertilization slow gear 322, switching to the fertilization slow gear or the fertilization fast gear; the shift fork drives the soil discharge gear 223 to move axially along the transmission shaft 22, so that the soil discharge gear 223 meshes with the soil discharge transmission gear 411, and performs soil discharge operation; the shift fork drives the fast / slow reverse gear shifting gear 512 to move axially along the travel shaft 51, when the small gear of the fast / slow reverse gear shifting gear 512 meshes with the first gear 531 of the differential 53, it switches to the travel slow gear; when the large gear of the fast / slow reverse gear shifting gear 512 meshes with the second gear 532 of the differential 53, it switches to the travel fast gear; when the large gear of the fast / slow reverse gear shifting gear 512 meshes with the reverse transmission gear 541, it switches to the travel reverse gear. When the fertilizer applicator turns, the differential 53 causes the wheels on both sides to rotate at different speeds, avoiding tire slippage or lateral friction caused by the same rotation speed.

[0032] The differential fertilizer transmission housing 10 includes a differential 53. The first gear 531 of the differential 53 engages with the pinion of the fast / slow reverse gear shifting gear 512 to switch to the slow driving gear. The second gear 532 engages with the large gear of the fast / slow reverse gear shifting gear 512 to switch to the fast driving gear. The third gear 533 and the large gear of the fast / slow reverse gear shifting gear 512 engage with the reverse transmission gear 541 to switch to the reverse driving gear. By connecting the differential 53 to the left half-shaft 521 and the right half-shaft 522, the speed difference between the inner and outer wheels can be adjusted. Regardless of the gear in use, when turning, the differential 53 causes the wheels on both sides to rotate at different speeds, avoiding tire slippage or lateral friction caused by the same speed. This differential fertilizer transmission allows the fertilizer applicator to move forward and backward, and facilitates turning during operation, thus improving work efficiency. The aforementioned differential fertilizer gearbox integrates the transmission mechanisms for fertilization, soil dispensing, and movement, making the whole machine compact and capable of independently controlling the movement, fertilization, and soil dispensing of the fertilizer applicator.

[0033] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0034] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A differential fertiliser variator, characterised in that: The application relates to a box body, a power input mechanism arranged in the box body, a fertilization transmission mechanism, a soil releasing transmission mechanism and a walking transmission mechanism, wherein the walking transmission mechanism is provided with a walking first shaft, a walking second shaft, a walking third shaft and a differential mechanism; the differential mechanism comprises a differential mechanism shell and first, second and third variable speed gears arranged on the differential mechanism shell; the walking first shaft is provided with a fast-slow-reverse gear shifting gear; the walking second shaft comprises a left half shaft and a right half shaft, and the left half shaft and the right half shaft are connected to the two sides of the differential mechanism; the walking third shaft is provided with a reverse gear transmission gear; the third variable speed gear of the differential mechanism is engaged with the reverse gear transmission gear; the fast-slow-reverse gear shifting gear can be driven to move along the walking first shaft in the axial direction by a shift fork; the fast-slow-reverse gear shifting gear can be engaged with the first and second variable speed gears of the differential mechanism and the reverse gear transmission gear; when the fast-slow-reverse gear shifting gear is engaged with the first variable speed gear of the differential mechanism, the walking slow gear position is switched; when the fast-slow-reverse gear shifting gear is engaged with the second variable speed gear of the differential mechanism, the walking fast gear position is switched; and when the fast-slow-reverse gear shifting gear is engaged with the reverse gear transmission gear, the walking reverse gear position is switched.

2. The differential fertilizer variator of claim 1, wherein: The differential mechanism shell is provided with shaft holes in the axial direction on the two sides; the first, second and third variable speed gears are arranged on the outer circumferential surface of the differential mechanism shell in the circumferential direction and are integrally formed with the differential mechanism shell.

3. A variable ratio differential application gearbox according to claim 2, wherein: The inside of the differential mechanism shell is provided with a left half shaft gear, a planetary gear shaft, a planetary gear and a right half shaft gear; the planetary gear is arranged on the planetary gear shaft and can rotate freely; the left half shaft and the right half shaft pass through the shaft holes on the two sides of the differential mechanism shell and are sleeved in the left half shaft gear and the right half shaft gear through spline gears; the two sides of the planetary gear are engaged with the left half shaft gear and the right half shaft gear and form a differential transmission system.

4. A variable ratio differential application gearbox according to claim 3, wherein: The power input mechanism comprises a transmission first shaft and a transmission second shaft which are rotatably arranged on the two sides of the box body through bearings; the transmission first shaft is provided with a first shaft transmission gear; the transmission second shaft is provided with a second shaft transmission gear, a transmission shaft gear and a soil releasing gear; the second shaft transmission gear is engaged with the first shaft transmission gear; the soil releasing gear can be driven to move along the transmission second shaft in the axial direction by a shift fork; the walking first shaft is provided with a walking transmission gear; and the walking transmission gear is engaged with the transmission shaft gear on the transmission second shaft.

5. A variable ratio differential application gearbox according to claim 4, wherein: The fertilization transmission mechanism comprises a fertilization first shaft which is rotatably arranged on the two sides of the box body through bearings; the fertilization first shaft is provided with a fertilization transmission gear and a fertilization gear position shifting gear; the fertilization transmission gear is engaged with the transmission shaft gear on the transmission second shaft; and the fertilization gear position shifting gear can be driven to move along the fertilization first shaft in the axial direction by a shift fork.

6. A variable ratio differential application gearbox according to claim 5, wherein: The fertilization transmission mechanism further comprises a fertilization second shaft which is rotatably arranged on the two sides of the box body through bearings; the fertilization second shaft is provided with a fertilization fast gear and a fertilization slow gear; the fertilization gear position shifting gear can be engaged with the fertilization fast gear and the fertilization slow gear; the fertilization gear position shifting gear is a double gear; when the pinion of the fertilization gear position shifting gear is engaged with the fertilization slow gear, the fertilization slow gear position is switched; and when the large gear of the fertilization gear position shifting gear is engaged with the fertilization fast gear, the fertilization fast gear position is switched.

7. A variable ratio differential application gearbox according to claim 6, characterised in that: The soil releasing transmission mechanism comprises a cutter shaft I and a cutter shaft II rotatably installed on both sides of the box through bearings, the cutter shaft I is provided with a soil releasing transmission gear and a driving sprocket, the cutter shaft II is provided with a driven sprocket, one end of the cutter shaft II is connected with a working tool for soil releasing, the driving sprocket and the driven sprocket are connected with a transmission chain in cooperation, the soil releasing transmission gear can be engaged with a soil releasing gear, and the soil releasing operation is performed when the soil releasing transmission gear is engaged with the soil releasing gear.

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