A full power gear shift transmission gearbox and tractor

Abstract

The present application relates to gearbox technical field, especially to a kind of full power gear shift transmission gearbox and tractor, a shaft, second axle, third axle, four axle and five axle are equipped with multiple transmission gears and multiple clutches for being combined with transmission gear respectively, electromagnetic valve group is equipped on gearbox body, the output of electromagnetic valve group is communicated with clutch for respectively controlling each clutch and transmission gear combination or separation;The configuration that electromagnetic valve group controls clutch and transmission gear combination or separation is: when advancing, a shaft, second axle, third axle, four axle and five axle are sequentially transmission connection;When reversing, a shaft, third axle, four axle and five axle are sequentially transmission connection.The beneficial effects of the present application are: the present application controls the clutch on each axle by electromagnetic valve group, so as to control each clutch to realize combination or separation with corresponding transmission gear, and then realize multiple transmission paths, significantly improve the number of gear positions under the premise of not increasing structural complexity.

Description

Technical Field

[0001] This invention relates to the field of gearbox technology, and more particularly to a fully power-shift transmission gearbox and a tractor. Background Technology

[0002] As a crucial piece of machinery in agricultural production, the ease of operation and uninterrupted power output during gear shifting directly impact driving comfort and operational efficiency. In recent years, with the continuous improvement of agricultural mechanization, tractors have become increasingly widely used in agricultural production. However, the problems of high labor intensity and low operational efficiency associated with traditional mechanical shift tractors are becoming increasingly prominent. Therefore, researching and designing tractor-specific all-power shifting systems to improve tractor handling performance has significant practical importance and application value.

[0003] The tractor gearbox, as an important component of the tractor's transmission system, is mainly used to change the engine speed and torque during tractor operation.

[0004] When tractors are operating under load in farmland, they often face complex and ever-changing road and working environments. For example, when encountering obstacles or changing direction, the tractor may need to stop and shift gears, which can reduce working efficiency.

[0005] In the prior art with patent number 202421174185.3 and patent name "a gearbox and its agricultural micro-tiller", the gear position of the gearbox is controlled by a shift fork shaft, shift fork, shift lever and gear lever, thereby realizing the adjustment of multiple gears. In this prior art, the clutch needs to be pressed by foot when shifting gears, which is complicated to operate, and the power flow needs to be cut off during the gear shifting process, resulting in energy waste. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a full-power shift transmission gearbox and a tractor, thereby solving the above-mentioned problems existing in the prior art.

[0007] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A full-power shift transmission gearbox includes a gearbox housing. A first shaft, a second shaft, a third shaft, a fourth shaft, and a fifth shaft are rotatably arranged parallel to each other within the gearbox housing. Multiple transmission gears are respectively provided on the first shaft, the second shaft, the third shaft, the fourth shaft, and the fifth shaft. Multiple clutches for engaging with the transmission gears are respectively provided on the first shaft, the second shaft, the fourth shaft, and the fifth shaft. An electromagnetic valve group is provided on the gearbox housing. The input end of the electromagnetic valve group is connected to an external hydraulic or pneumatic source, and the output end of the electromagnetic valve group is connected to the clutches to control the engagement or disengagement of each clutch with the transmission gear. The configuration of the electromagnetic valve group controlling the engagement or disengagement of the clutches with the transmission gears is as follows: In forward gear, the first shaft, the second shaft, the third shaft, the fourth shaft, and the fifth shaft are sequentially connected; in reverse gear, the first shaft, the third shaft, the fourth shaft, and the fifth shaft are sequentially connected.

[0008] The beneficial effects of this invention are as follows: This invention controls the clutches on each shaft separately through an electromagnetic valve assembly, thereby controlling each clutch to engage or disengage with the corresponding transmission gear, thus realizing multiple transmission paths and significantly increasing the number of gears without increasing structural complexity; the electromagnetic valve assembly has a short response time, fast shifting speed, and no power interruption during shifting, reducing energy consumption and improving shifting smoothness and efficiency; by controlling whether the three shafts are on the transmission path, the forward and reverse rotation of the five-axis output can be realized, thereby realizing the control of forward and reverse gears, avoiding the use of the additional gear set or planetary gear system required for reverse gear in the prior art, and simplifying the transmission structure.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the transmission gears on the shaft include a first gear, a second gear, a third gear, and a fourth gear spaced apart. The first gear is fixedly mounted on the shaft, and the second, third, and fourth gears are all rotatably connected to the shaft. The clutches on the shaft include a left clutch, a middle clutch, and a right clutch. The left clutch is located next to the second gear and is used to engage or disengage with it. The middle clutch is located next to the third gear and is used to engage or disengage with it. The third gear of the first shaft is engaged or disengaged; the right clutch of the first shaft is located next to the fourth gear of the first shaft for engaging or disengaging with the fourth gear of the first shaft; the first gear of the first shaft is constantly meshed with a transmission gear on the second shaft; the second gear of the first shaft is constantly meshed with a transmission gear on the third shaft; the third gear of the first shaft is connected to the third shaft via a transmission gear on the second shaft; the fourth gear of the first shaft is connected to the third shaft via another transmission gear on the second shaft; the left clutch, the middle clutch, and the right clutch of the first shaft are all connected to the solenoid valve assembly.

[0011] The beneficial effects of adopting the above-mentioned further scheme are as follows: by controlling the engagement or disengagement of the left clutch of the first shaft and the second gear of the first shaft, the direct transmission connection between the first shaft and the third shaft or the transmission connection between the second shaft and the third shaft can be realized, thereby realizing the control of the output direction of the fifth shaft, and thus realizing the control of forward and reverse gears; the middle clutch of the first shaft and the right clutch of the first shaft realize two transmission connection methods with the second shaft, thereby realizing the setting of twice the forward gears and expanding the number of gears.

[0012] Furthermore, the transmission gears on the two shafts include a first gear, a second gear set, and a third gear arranged at intervals. The first gear is fixedly mounted on the two shafts, while the second gear set and the third gear are rotatably mounted on the two shafts. The clutches on the two shafts include a left clutch and a right clutch. The left clutch is located next to the second gear set and is used to engage or disengage with it. The right clutch is located next to the third gear and is used to engage or disengage with it. The first gear is constantly meshed with a transmission gear on the first shaft. The second gear set is meshed with both a transmission gear on the first shaft and a transmission gear on the third shaft. The third gear is meshed with both a transmission gear on the first shaft and a transmission gear on the third shaft. Both the left and right clutches are connected to the solenoid valve assembly.

[0013] The beneficial effects of adopting the above-mentioned further scheme are: the left clutch and the right clutch of the second shaft control the synchronous rotation of the second gear set and the third gear of the second shaft with the second shaft respectively, realize two transmission paths of the second shaft, and thus realize twice the number of forward gears, further expanding the number of gears.

[0014] Furthermore, the second gear set of the two shafts includes a second left gear and a second right gear of the two shafts arranged at intervals. The second left gear and the second right gear of the two shafts are both rotatably mounted on the two shafts. The second left gear and the second right gear of the two shafts are fixedly connected by bushings to achieve synchronous rotation. The second left gear of the two shafts meshes with a transmission gear on the three shafts, and the second right gear of the two shafts meshes with a transmission gear on the one shaft. The second left clutch of the two shafts is arranged next to the second right gear of the two shafts for engaging or disengaging with the second right gear of the two shafts.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, through the synchronous rotation of the second left gear and the second right gear of the second shaft, the positions of the second left gear and the second right gear of the second shaft can be set according to the setting position of the transmission gear on the first shaft and the transmission gear on the third shaft, so that the positions of the transmission gears on adjacent and mutually transmitting shafts can be reasonably arranged as needed, and mutual interference between transmission gears can be avoided.

[0016] Furthermore, the transmission gears on the three shafts include a first gear, a second gear, and a third gear arranged at intervals. The first gear, the second gear, and the third gear are all fixedly mounted on the three shafts. The first gear is constantly meshed with a transmission gear on the first shaft, the second gear meshes with a transmission gear on the fourth shaft, and the third gear meshes with a transmission gear on the second shaft and a transmission gear on the fourth shaft.

[0017] The beneficial effects of adopting the above-mentioned further scheme are as follows: the first gear of the three shafts is used to directly mesh with the transmission gear on the first shaft. When in reverse gear, the three shafts are driven by the first gear of the three shafts and the first shaft, which simplifies the reverse gear implementation logic; the second gear of the three shafts is set to connect with the transmission gear on the fourth shaft, which facilitates the transmission of power to the fourth shaft; the third gear of the three shafts can directly transmit the power from the second shaft to the transmission gear on the fourth shaft.

[0018] Furthermore, the transmission gears on the four shafts include a first gear, a second gear, a third gear, and a fourth gear arranged at intervals. The first gear and the fourth gear are fixedly mounted on the four shafts, while the second gear and the third gear are rotatably mounted on the four shafts. The clutches on the four shafts include a left clutch and a right clutch. The left clutch is located next to the second gear and is used to engage or disengage with it. The right clutch is located next to the third gear and is used to engage or disengage with it. The first gear and the fourth gear mesh with two transmission gears on the fifth shaft, and the second gear and the third gear mesh with two transmission gears on the third shaft. Both the left clutch and the right clutch are connected to the solenoid valve assembly.

[0019] The beneficial effects of adopting the above-mentioned further scheme are: the first gear and the fourth gear of the four-axis are used to connect with the transmission gears on the five-axis respectively, and the setting of the left clutch and the right clutch of the four-axis realizes two transmission paths of three-axis and four-axis, thereby realizing twice the setting of forward or reverse gears, and further expanding the number of gears.

[0020] Furthermore, the transmission gears on the five shafts include a first gear and a second gear of the five shafts arranged at intervals, both of which are rotatably mounted on the five shafts; the clutches on the five shafts include a left clutch and a right clutch, the left clutch being located next to the first gear of the five shafts for engaging or disengaging with the first gear, and the right clutch being located next to the second gear of the five shafts for engaging or disengaging with the second gear. The first and second gears of the five shafts respectively mesh with two transmission gears on the four shafts, and both the left and right clutches of the five shafts are connected to the solenoid valve assembly.

[0021] The beneficial effects of adopting the above-mentioned further scheme are: the five-axis left clutch and the five-axis right clutch realize two transmission paths with the four-axis, and by controlling the five-axis left clutch and the five-axis right clutch respectively, the number of forward or reverse gears can be doubled, further expanding the number of gears.

[0022] Furthermore, the gearbox housing includes a front cover and a rear cover fixedly connected by bolts. The first shaft, the second shaft, the third shaft, the fourth shaft, and the fifth shaft are all located between the front cover and the rear cover. The two ends of the first shaft, the second shaft, the third shaft, the fourth shaft, and the fifth shaft are rotatably connected to the front cover and the rear cover, respectively.

[0023] The advantage of adopting the above-mentioned further solution is that it facilitates the installation of various shafts, transmission gears, and clutches.

[0024] Furthermore, the two ends of the first axis, the second axis, the third axis, the fourth axis, and the fifth axis are rotatably connected to the front cover and the rear cover respectively via bearings.

[0025] The beneficial effects of adopting the above-mentioned further solutions are: improving the stability of rotation of each shaft, reducing rotational friction, reducing power loss and rotational wear of each shaft.

[0026] In order to solve the above-mentioned technical problems, the present invention also provides a tractor, including the all-power shift transmission gearbox described above.

[0027] The beneficial effects of adopting the above solution are: without increasing structural complexity, the present invention significantly increases the number of gears, simplifies the transmission structure, and greatly improves the power performance, economic performance and operating efficiency of the tractor; reduces the impact load during gear shifting; and can reduce the labor intensity of operators. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Gearbox housing; 11. Front cover; 12. Rear cover;

[0032] 2. Shaft 1; 21. First gear of shaft 1; 22. Second gear of shaft 1; 23. Third gear of shaft 1; 24. Fourth gear of shaft 1; 25. Left clutch of shaft 1; 26. Middle clutch of shaft 1; 27. Right clutch of shaft 1;

[0033] 3. Second shaft; 31. First gear of second shaft; 32. Second left gear of second shaft; 33. Second right gear of second shaft; 34. Bushing; 35. Third gear of second shaft; 36. Left clutch of second shaft; 37. Right clutch of second shaft;

[0034] 4. Three-axis; 41. First gear of the three-axis; 42. Second gear of the three-axis; 43. Third gear of the three-axis;

[0035] 5. Four-shaft; 51. First gear of four-shaft; 52. Second gear of four-shaft; 53. Third gear of four-shaft; 54. Fourth gear of four-shaft; 55. Left clutch of four-shaft; 56. Right clutch of four-shaft;

[0036] 6. Fifth shaft; 61. First gear of the fifth shaft; 62. Second gear of the fifth shaft; 63. Left clutch of the fifth shaft; 64. Right clutch of the fifth shaft;

[0037] 7. Solenoid valve assembly. Detailed Implementation

[0038] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0039] Example 1

[0040] like Figure 1 , Figure 2 As shown, an embodiment of the present invention discloses a full-power shift transmission gearbox, including a gearbox housing 1. A first shaft 2, a second shaft 3, a third shaft 4, a fourth shaft 5, and a fifth shaft 6 are rotatably arranged parallel to each other within the gearbox housing 1. The gearbox housing 1 includes a front cover 11 and a rear cover 12 fixedly connected by bolts. The first shaft 2, the second shaft 3, the third shaft 4, the fourth shaft 5, and the fifth shaft 6 are all located between the front cover 11 and the rear cover 12. The two ends of the first shaft 2, the second shaft 3, the third shaft 4, the fourth shaft 5, and the fifth shaft 6 are respectively rotatably connected to the front cover 11 and the rear cover 12. Specifically, the two ends of the first shaft 2, the second shaft 3, the third shaft 4, the fourth shaft 5, and the fifth shaft 6 are respectively rotatably connected to the front cover 11 and the rear cover 12 via bearings, improving the stability of the rotation of each shaft, reducing rotational friction, lowering power loss, and reducing rotational wear of each shaft.

[0041] Multiple transmission gears are respectively provided on the first shaft 2, the second shaft 3, the third shaft 4, the fourth shaft 5, and the fifth shaft 6. Multiple clutches for engaging with the transmission gears are also provided on the first shaft 2, the second shaft 3, the fourth shaft 5, and the fifth shaft 6. The gearbox housing 1 is provided with a solenoid valve group 7. The input end of the solenoid valve group 7 is used to connect to an external hydraulic or air source, and the output end of the solenoid valve group 7 is connected to the clutches to control the engagement or disengagement of each clutch with the transmission gear. The configuration of the solenoid valve group 7 controlling the engagement or disengagement of the clutches with the transmission gears is as follows: in forward gear, the first shaft 2, the second shaft 3, the third shaft 4, the fourth shaft 5, and the fifth shaft 6 are sequentially connected for transmission; in reverse gear, the first shaft 2, the third shaft 4, the fourth shaft 5, and the fifth shaft 6 are sequentially connected for transmission.

[0042] In an embodiment of the present invention, the transmission gears on the shaft 2 include a first shaft gear 21, a second shaft gear 22, a third shaft gear 23, and a fourth shaft gear 24 spaced apart. The first shaft gear 21 is fixedly sleeved on the shaft 2. The second shaft gear 22, the third shaft gear 23, and the fourth shaft gear 24 are all rotatably connected to the shaft 2. A left shaft clutch 25 for engaging or disengaging with the second shaft gear 22 is provided next to the second shaft gear 22. A middle shaft clutch 26 for engaging or disengaging with the third shaft gear 23 is provided next to the third shaft gear 23. A right shaft clutch 27 for engaging or disengaging with the fourth shaft gear 24 is provided next to the fourth shaft gear 24.

[0043] The transmission gears on the two shafts 3 include a first gear 31, a second gear set, and a third gear 35 arranged at intervals. The first gear 31 is fixedly sleeved on the two shafts 3. The second gear set and the third gear 35 are rotatably mounted on the two shafts 3. A left clutch 36 for engaging or disengaging with the second gear set is provided next to the second gear set. A right clutch 37 for engaging or disengaging with the third gear 35 is provided next to the third gear 35.

[0044] The second gear set of the two shafts includes a second left gear 32 and a second right gear 33 of the two shafts arranged at intervals. The second left gear 32 and the second right gear 33 of the two shafts are rotatably mounted on the two shafts 3. The second left gear 32 and the second right gear 33 of the two shafts are fixedly connected by a bushing 34 to achieve synchronous rotation.

[0045] The transmission gears on the three shafts 4 include a first gear 41, a second gear 42, and a third gear 43 arranged at intervals. The first gear 41, the second gear 42, and the third gear 43 are all fixedly sleeved on the three shafts 4.

[0046] The transmission gears on the four shafts 5 include a first gear 51, a second gear 52, a third gear 53, and a fourth gear 54 arranged at intervals. The first gear 51 and the fourth gear 54 are fixedly mounted on the four shafts 5. The second gear 52 and the third gear 53 are rotatably mounted on the four shafts 5. A left clutch 55 for engaging or disengaging with the second gear 52 is provided next to the second gear 52. A right clutch 56 for engaging or disengaging with the third gear 53 is provided next to the third gear 53.

[0047] The transmission gears on the five-axis 6 include a five-axis first gear 61 and a five-axis second gear 62 arranged at intervals. Both the five-axis first gear 61 and the five-axis second gear 62 are rotatably mounted on the five-axis 6. A five-axis left clutch 63 for engaging or disengaging with the five-axis first gear 61 is provided next to the five-axis first gear 61, and a five-axis right clutch 64 for engaging or disengaging with the five-axis second gear 62 is provided next to the five-axis second gear 62.

[0048] In an embodiment of the present invention,

[0049] The transmission relationship of the transmission gears on shaft 2 is as follows:

[0050] The first gear 21 of the first shaft is constantly meshed with the first gear 31 of the second shaft. Since the first gear 21 is fixedly mounted on the first shaft 2, the rotation of the first shaft 2 will inevitably drive the rotation of the first gear 21. The second gear 22 of the first shaft is constantly meshed with the first gear 41 of the third shaft, the third gear 23 of the first shaft is constantly meshed with the second right gear 33 of the second shaft, and the fourth gear 24 of the first shaft is constantly meshed with the third gear 35 of the second shaft. When the left clutch 25 of the first shaft engages with the second gear 22 of the first shaft, the second gear 22 of the first shaft rotates synchronously with the first shaft 2. When the left clutch 25 of the first shaft disengages from the second gear 22 of the first shaft, ... The rotation of shaft 2 will not cause the second gear 22 of shaft 2 to rotate synchronously; when the clutch 26 of shaft 2 is engaged with the third gear 23 of shaft 2, the third gear 23 of shaft 2 rotates synchronously with shaft 2; when the clutch 26 of shaft 2 is disengaged from the third gear 23 of shaft 2, the rotation of shaft 2 will not cause the third gear 23 of shaft 2 to rotate synchronously; when the right clutch 27 of shaft 2 is engaged with the fourth gear 24 of shaft 2, the fourth gear 24 of shaft 2 rotates synchronously with shaft 2; when the right clutch 27 of shaft 2 is disengaged from the fourth gear 24 of shaft 2, the rotation of shaft 2 will not cause the fourth gear 24 of shaft 2 to rotate.

[0051] By controlling the engagement or disengagement of the left clutch 25 of the first shaft and the second gear 22 of the first shaft, the direct drive connection between the first shaft 2 and the third shaft 4 or the drive connection between the first shaft 2 and the third shaft 4 through the second shaft 3 can be achieved, thereby controlling the output direction of the fifth shaft 6, and thus controlling the forward and reverse gears; the middle clutch 26 and the right clutch 27 of the first shaft realize two drive connection methods with the second shaft 3, thereby achieving the setting of twice the forward gears and expanding the number of gears.

[0052] The transmission relationship of the transmission gears on the second shaft 3 is as follows:

[0053] The first gear 31 of the second shaft is constantly meshed with the first gear 21 of the first shaft. The first gear 21 of the first shaft rotates synchronously with the first shaft 2. The first gear 21 of the first shaft drives the first gear 31 of the second shaft to rotate. Since the first gear 31 of the second shaft is fixedly sleeved on the second shaft 3, the second shaft 3 rotates synchronously with the rotation of the first gear 31 of the second shaft. The second left gear 32 of the second shaft is constantly meshed with the first gear 41 of the third shaft. The second left gear 32 of the second shaft rotates synchronously with the second right gear 33 of the second shaft through the bushing 34. The second right gear 33 of the second shaft is constantly meshed with the third gear 23 of the first shaft. The third gear 35 of the second shaft is constantly meshed with the fourth gear 24 of the first shaft and the third gear 43 of the third shaft. When the second shaft left clutch 36 engages with the second shaft second right gear 33, the rotation of the second shaft 3 drives the second shaft second right gear 33 and the second shaft second left gear 32 to rotate synchronously with the second shaft 3. When the second shaft left clutch 36 disengages from the second shaft second right gear 33, the rotation of the second shaft 3 cannot synchronously drive the second shaft second right gear 33 and the second shaft second left gear 32 to rotate. When the second shaft right clutch 37 engages with the second shaft third gear 35, and the first shaft right clutch 27 disengages from the first shaft fourth gear 24, the rotation of the second shaft 3 drives the rotation of the second shaft third gear 35, thereby realizing the transmission between the second shaft third gear 35 and the third shaft third gear 43.

[0054] The left clutch 36 and the right clutch 37 of the second shaft control the synchronous rotation of the second gear set and the third gear 35 of the second shaft with the second shaft 3, respectively, to realize two transmission paths of the second shaft 3, thereby realizing twice the number of forward gears and further expanding the number of gears.

[0055] The second left gear 32 and the second right gear 33 of the second shaft rotate synchronously through the bushing 34. The positions of the second left gear 32 and the second right gear 33 of the second shaft can be set according to the required positions of the transmission gears on the first shaft 2 and the third shaft 4. This allows for the reasonable arrangement of the positions of the transmission gears on adjacent and mutually transmitting shafts, avoiding mutual interference between the transmission gears.

[0056] The transmission relationship of the gears on the three shafts 4 is as follows:

[0057] The first gear 41 of the three-axis is constantly meshed with the second gear 22 of the first-axis, the first gear 41 of the three-axis is constantly meshed with the second left gear 32 of the second-axis, the second gear 42 of the three-axis is constantly meshed with the second gear 52 of the fourth-axis, the third gear 43 of the three-axis is constantly meshed with the third gear 53 of the fourth-axis, and the third gear 43 of the three-axis is constantly meshed with the third gear 35 of the second-axis.

[0058] The first gear 41 of the three shafts is used to directly mesh with the transmission gear on the first shaft 2. When in reverse gear, the three shaft 4 is driven by the first gear 41 of the three shafts and the first shaft 2, which simplifies the reverse gear implementation logic. The second gear 42 of the three shafts is set to connect with the transmission gear on the fourth shaft 5, so that power can be transmitted to the fourth shaft 5. The third gear 43 of the three shafts can directly transmit the power transmitted from the second shaft 3 to the transmission gear on the fourth shaft 5.

[0059] The transmission relationship of the gears on the four shafts 5 is as follows:

[0060] The four-axis first gear 51 is constantly meshed with the five-axis first gear 61, the four-axis second gear 52 is constantly meshed with the three-axis second gear 42, the four-axis third gear 53 is constantly meshed with the three-axis third gear 43, and the four-axis fourth gear 54 is constantly meshed with the five-axis second gear 62. When the four-axis left clutch 55 is engaged with the four-axis second gear 52 and the four-axis right clutch 56 is disengaged from the four-axis third gear 53, the three-axis 4 is driven to the four-axis 5 through the three-axis second gear 42 and the four-axis second gear 52, thereby driving the four-axis 5 to rotate. When the four-axis right clutch 56 is engaged with the four-axis third gear 53 and the four-axis left clutch 55 is disengaged from the four-axis second gear 52, the three-axis 4 is driven to the four-axis 5 through the three-axis third gear 43 and the four-axis third gear 53, thereby driving the four-axis 5 to rotate.

[0061] The first gear 51 and the fourth gear 54 of the four-axis are used to drive the transmission gears on the fifth axis 6 respectively. The four-axis left clutch 55 and the four-axis right clutch 56 realize two transmission paths between the three-axis 4 and the four-axis 5, thereby realizing twice the number of forward or reverse gears and further expanding the number of gears.

[0062] The transmission relationship of the transmission gears on the five-axis 6 is as follows:

[0063] The five-axis first gear 61 is constantly meshed with the four-axis first gear 51, and the five-axis second gear 62 is constantly meshed with the four-axis fourth gear 54. When the five-axis left clutch 63 is engaged with the five-axis first gear 61 and the five-axis right clutch 64 is disengaged from the five-axis second gear 62, the four-axis 5 is driven to the five-axis 6 through the four-axis first gear 51 and the five-axis first gear 61, causing the five-axis 6 to rotate. When the five-axis left clutch 63 is disengaged from the five-axis first gear 61 and the five-axis right clutch 64 is engaged with the five-axis second gear 62, the four-axis 5 is driven to the five-axis 6 through the four-axis fourth gear 54 and the five-axis second gear 62, causing the five-axis 6 to rotate.

[0064] The five-axis left clutch 63 and the five-axis right clutch 64 realize two transmission paths with the four-axis 5. By controlling the five-axis left clutch 63 and the five-axis right clutch 64 respectively, the number of forward or reverse gears can be doubled, further expanding the number of gears.

[0065] The following list shows the engagement of each clutch in each gear:

[0066] 1F 1M 1R 2F 2R 4F 4R 5F 5R 4R √ √ √ 3R √ √ √ 2R √ √ √ 1R √ √ √ N √ F1 √ √ √ F2 √ √ √ F3 √ √ √ F4 √ √ √ F5 √ √ √ F6 √ √ √ F7 √ √ √ F8 √ √ √ F9 √ √ √ F10 √ √ √ F11 √ √ √ F12 √ √ √ F13 √ √ √ F14 √ √ √ F15 √ √ √ F16 √ √ √

[0067] In the table above, 1F represents the left clutch of shaft 1 (25), 1M represents the middle clutch of shaft 1 (26), 1R represents the right clutch of shaft 1 (27), 2F represents the left clutch of shaft 2 (36), 2R represents the right clutch of shaft 2 (37), 4F represents the left clutch of shaft 4 (55), 4R represents the right clutch of shaft 4 (56), 5F represents the left clutch of shaft 5 (63), and 5R represents the right clutch of shaft 5 (64).

[0068] 4R indicates reverse fourth gear, 3R indicates reverse third gear, 2R indicates reverse second gear, 1R indicates reverse first gear, N indicates neutral, 1F indicates forward first gear, 2F indicates forward second gear, 3F indicates forward third gear, 4F indicates forward fourth gear, 5F indicates forward fifth gear, 6F indicates forward sixth gear, 7F indicates forward seventh gear, 8F indicates forward eighth gear, 9F indicates forward ninth gear, 10F indicates forward tenth gear, 11F indicates forward eleventh gear, 12F indicates forward twelfth gear, 13F indicates forward thirteenth gear, 14F indicates forward fourteenth gear, F15 indicates forward fifteenth gear, and F16 indicates forward sixteenth gear.

[0069] A "√" indicates that the corresponding clutch is engaged when the gear is in that position.

[0070] The transmission relationship of each gear in each gear position is as follows:

[0071] Reverse 4th gear (4R): Shaft 2 rotates - Shaft 1 left clutch 25 engages Shaft 1 second gear 22 - Shaft 1 first gear 21 drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 5 rotates - Shaft 4 fourth gear 54 rotates - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0072] Reverse 3rd gear (3R): Shaft 2 rotates - Shaft 1 left clutch 25 engages Shaft 1 second gear 22 - Shaft 1 first gear 21 drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 5 rotates - Shaft 4 first gear 51 rotates - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 6 rotates to output.

[0073] Reverse Second Gear (2R): Shaft 2 rotates - Shaft 1 left clutch 25 engages Shaft 1 second gear 22 - Shaft 1 first gear 21 drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 fourth gear 54 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0074] Reverse first gear (1R): Shaft 2 rotates - Shaft 1 left clutch 25 engages Shaft 1 second gear 22 - Shaft 1 second gear 22 drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 first gear 51 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 6 rotates to output.

[0075] Neutral (N): Shaft 2 rotates - Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives shaft 2 first gear 31 to rotate - Shaft 2 rotates - Shaft 3 rotates - Shaft 2 second gear drives shaft 3 first gear 41 to rotate - Shaft 3 rotates.

[0076] Forward first gear (F1): Shaft 2 rotates—Shaft 1 first gear 21 rotates—Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate—Shaft 2 3 rotates—Shaft 2 left clutch 36 engages Shaft 2 second gear set—Shaft 2 second gear set rotates—Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate—Shaft 3 4 rotates—Shaft 4 left clutch 55 engages Shaft 4 second gear 52—Shaft 4 5 rotates—Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate—Shaft 5 left clutch 63 engages Shaft 5 first gear 61—Shaft 5 6 rotates to output.

[0077] Forward Second Gear (F2): Shaft 2 rotates—shaft 26 engages shaft 3 gear 23—shaft 3 gear 23 drives shaft 2 gear set 2 to rotate—shaft 2 gear set 2 drives shaft 3 gear 1 to rotate—shaft 4 rotates—shaft 4 left clutch 55 engages shaft 4 gear 22—shaft 5 rotates—shaft 4 first gear 51 drives shaft 5 first gear 61 to rotate—shaft 5 left clutch 63 engages shaft 5 first gear 61—shaft 5 rotates and outputs power.

[0078] Forward third gear (F3): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 right clutch 37 engages - Shaft 2 third gear 35 - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages - Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 first gear 51 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages - Shaft 5 first gear 61 - Shaft 5 6 rotates to output.

[0079] Forward fourth gear (F4): Shaft 2 rotates - Shaft 1 right clutch 27 engages Shaft 1 fourth gear 24 - Shaft 1 fourth gear 24 drives Shaft 2 third gear 35 to rotate - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 6 rotates to output.

[0080] Forward 5th gear (F5): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 left clutch 36 engages Shaft 2 second gear set - Shaft 2 second gear set rotates - Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 third gear 53 drives Shaft 3 third gear 43 to rotate - Shaft 4 5 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 6 rotates to output.

[0081] Forward 6th gear (F6): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 left clutch 36 engages Shaft 2 second gear set - Shaft 2 second gear set rotates - Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 4 second gear 52 drives Shaft 3 second gear 42 to rotate - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0082] Forward 7th gear (F7): Shaft 2 rotates - Shaft 26 engages Shaft 3 gear 23 - Shaft 3 gear 23 drives Shaft 2 second gear set to rotate - Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate - Shaft 3 rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 rotates to output.

[0083] Forward 8th gear (F8): Shaft 2 rotates - Shaft 26 engages Shaft 3 gear 23 - Shaft 3 gear 23 drives Shaft 2 second gear set to rotate - Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate - Shaft 3 fourth gear rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 to rotate - Shaft 4 fifth gear rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 to rotate - Shaft 5 sixth gear rotates to output.

[0084] Forward 9th gear (F9): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 right clutch 37 engages - Shaft 2 third gear 35 rotates - Shaft 2 third gear 35 rotates - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages - Shaft 4 third gear 53 rotates - Shaft 4 5 rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages - Shaft 5 first gear 61 rotates - Shaft 5 6 rotates for output.

[0085] Forward 10th gear (F10): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 right clutch 37 engages - Shaft 2 third gear 35 - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages - Shaft 4 second gear 52 to rotate - Shaft 4 5 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages - Shaft 5 second gear 62 to rotate - Shaft 5 6 rotates to output.

[0086] Forward 11th gear (F11): Shaft 2 rotates - Shaft 1 right clutch 27 engages Shaft 1 fourth gear 24 - Shaft 1 fourth gear 24 drives Shaft 2 third gear 35 to rotate - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 fourth rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 fifth rotates - Shaft 4 first gear 51 drives Shaft 5 first gear 61 to rotate - Shaft 5 left clutch 63 engages Shaft 5 first gear 61 - Shaft 5 sixth rotates to output.

[0087] Forward 12th gear (F12): Shaft 2 rotates - Shaft 1 right clutch 27 engages Shaft 1 fourth gear 24 - Shaft 1 fourth gear 24 rotates - Shaft 1 fourth gear 24 drives Shaft 2 third gear 35 to rotate - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 fourth rotates - Shaft 4 rotates - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 third gear 53 drives Shaft 3 third gear 43 to rotate - Shaft 4 fifth rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 sixth rotates to output.

[0088] Forward 13th gear (F13): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 left clutch 36 engages Shaft 2 second gear set - Shaft 2 second gear set rotates - Shaft 2 second gear set drives Shaft 3 first gear 41 to rotate - Shaft 3 4 rotates - Shaft 4 right clutch 56 engages Shaft 4 third gear 53 - Shaft 4 third gear 53 drives Shaft 3 third gear 43 to rotate - Shaft 4 5 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0089] Forward 14th gear (F14): Shaft 2 rotates—shaft 26 engages shaft 3 gear 23—shaft 3 gear 23 drives shaft 2 gear set—shaft 2 gear set drives shaft 3 first gear 41 to rotate—shaft 3 rotates—shaft 3 third gear 43 drives shaft 4 third gear 53 to rotate—shaft 4 right clutch 56 engages shaft 4 third gear 53—shaft 4 rotates—shaft 4 fourth gear 54 drives shaft 5 second gear 62 to rotate—shaft 5 right clutch 64 engages shaft 5 second gear 62—shaft 5 rotates to output.

[0090] Forward 15th gear (F15): Shaft 2 rotates - Shaft 1 first gear 21 rotates - Shaft 1 first gear 21 drives Shaft 2 first gear 31 to rotate - Shaft 2 3 rotates - Shaft 2 right clutch 37 engages - Shaft 2 third gear 35 - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 3 third gear 43 drives Shaft 4 third gear 53 to rotate - Shaft 4 right clutch 56 engages - Shaft 4 third gear 53 - Shaft 4 5 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages - Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0091] Forward 16th gear (F16): Shaft 1 2 rotates - Shaft 1 right clutch 27 engages Shaft 1 fourth gear 24 - Shaft 1 fourth gear 24 drives Shaft 2 third gear 35 to rotate - Shaft 2 third gear 35 drives Shaft 3 third gear 43 to rotate - Shaft 3 4 rotates - Shaft 3 second gear 42 drives Shaft 4 second gear 52 to rotate - Shaft 4 left clutch 55 engages Shaft 4 second gear 52 - Shaft 4 5 rotates - Shaft 4 fourth gear 54 drives Shaft 5 second gear 62 to rotate - Shaft 5 right clutch 64 engages Shaft 5 second gear 62 - Shaft 5 6 rotates to output.

[0092] During assembly, shaft 2 is connected to the power source, and shaft 6 is connected to the load end as the output shaft.

[0093] In embodiments of the present invention, different transmission ratios are achieved by setting different numbers of teeth on the transmission gears. In one embodiment of the present invention, the first-axis second gear 22 has 51 teeth, the first-axis first gear 21 and the third-axis first gear 41 have 46 teeth, the second-axis first gear 31 has 41 teeth, the second-axis second left gear 32 has 30 teeth, the second-axis second right gear 33 and the second-axis third gear 35 each have 37 teeth, the third-axis second gear 42 has 21 teeth, the fourth-axis first gear 51 has 26 teeth, the fourth-axis second gear 52 and the fifth-axis first gear 61 each have 52 teeth, the first-axis third gear 23 and the first-axis fourth gear 24 each have 50 teeth, the third-axis third gear 43 has 39 teeth, the fourth-axis fourth gear 54 has 42 teeth, the fourth-axis third gear 53 has 48 teeth, and the fifth-axis second gear 62 has 38 teeth. Specifically, different numbers of teeth can be set according to actual transmission requirements.

[0094] The solenoid valve assembly 7 receives shift signals through an external controller, drives the corresponding transmission gear to engage with the corresponding clutch, and reduces friction loss through the lubrication system during operation. The solenoid valve assembly 7 detects data in the detection eye to dynamically adjust the shift force.

[0095] This invention uses solenoid valve assembly 7 to control the clutches on each shaft, thereby controlling each clutch to engage or disengage with the corresponding transmission gear, thus achieving multiple transmission paths and significantly increasing the number of gears without increasing structural complexity. Solenoid valve assembly 7 has a short response time, fast shifting speed, and no power interruption during shifting, reducing energy consumption and improving shifting smoothness and efficiency. By controlling whether the three shafts 4 are on the transmission path, the forward and reverse rotation of the five shafts 6 can be achieved, thereby realizing the control of forward and reverse gears, avoiding the use of additional gear sets or planetary gear trains required for reverse gear in existing technologies, and simplifying the transmission structure.

[0096] The solenoid valve assembly 7 precisely controls the gear shaft clutch via hydraulic / pneumatic pressure, with a response time of ≤50ms. Power transmission is continuous during gear shifting, avoiding the jerking or power interruption problems of traditional mechanical gear shifting. It is especially suitable for scenarios with high requirements for operational continuity (such as agricultural machinery operations).

[0097] In this embodiment, the front cover 11 and the rear cover 12 are made of lightweight materials and have optimized internal reinforcing rib design. They also integrate a sealing structure (such as a rubber ring), reducing the overall weight of the device by ≥20%. The enclosed shell effectively resists dust, moisture and mechanical impact, extending service life and reducing maintenance frequency.

[0098] This embodiment uses the meshing path of the transmission gears on the three shafts 4 to directly reverse the output direction, replacing the additional gear set or planetary gear system required for traditional reverse gear, reducing the number of parts and assembly complexity, reducing manufacturing costs by 10%-15%, and reducing failure points.

[0099] Example 2

[0100] This embodiment discloses a tractor, including the all-power shift transmission gearbox described in the above embodiment.

[0101] This embodiment significantly increases the number of gears without increasing structural complexity, simplifies the transmission structure, and greatly improves the tractor's power performance, economic performance, and operating efficiency; it also reduces the impact load during gear shifting and can reduce the labor intensity of operators.

[0102] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0103] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully power-shift transmission gearbox, characterized in that, The system includes a gearbox housing (1), within which are rotatably arranged parallel shafts: a first shaft (2), a second shaft (3), a third shaft (4), a fourth shaft (5), and a fifth shaft (6). Multiple transmission gears are mounted on each of the first shaft (2), second shaft (3), third shaft (4), fourth shaft (5), and fifth shaft (6). Multiple clutches for engaging with the transmission gears are also mounted on each of the first shaft (2), second shaft (3), fourth shaft (5), and fifth shaft (6). A solenoid valve assembly (7) is mounted on the gearbox housing (1). The input end of the solenoid valve assembly (7) is connected to an external hydraulic or pneumatic source. The output end of the solenoid valve assembly (7)... The end is connected to the clutch for controlling the engagement or disengagement of each clutch with the transmission gear; the configuration of the solenoid valve group (7) controlling the engagement or disengagement of the clutch with the transmission gear is as follows: in forward gear, the first shaft (2), the second shaft (3), the third shaft (4), the fourth shaft (5), and the fifth shaft (6) are sequentially connected in transmission; in reverse gear, the first shaft (2), the third shaft (4), the fourth shaft (5), and the fifth shaft (6) are sequentially connected in transmission; the transmission gear on the first shaft (2) includes a first shaft first gear (21), a first shaft second gear (22), a first shaft third gear (23), and a first shaft fourth gear (24) spaced apart, the first shaft The first gear (21) is fixedly sleeved on the shaft (2). The second gear (22), the third gear (23), and the fourth gear (24) of the shaft are all rotatably connected to the shaft (2). The clutches on the shaft (2) include a left clutch (25), a middle clutch (26), and a right clutch (27). The left clutch (25) is located next to the second gear (22) and is used to engage or disengage with the second gear (22). The middle clutch (26) is located next to the third gear (23) and is used to engage or disengage with the third gear (23). The right clutch (27) is located next to the second gear (22). The fourth gear (24) of the first shaft is used to engage or disengage with the fourth gear (24); the first gear (21) of the first shaft is constantly meshed with a transmission gear on the second shaft (3); the second gear (22) of the first shaft is constantly meshed with a transmission gear on the third shaft (4); the third gear (23) of the first shaft is connected to the third shaft (4) via a transmission gear on the second shaft (3); the fourth gear (24) of the first shaft is connected to the third shaft (4) via another transmission gear on the second shaft (3); the left clutch (25), the middle clutch (26), and the right clutch (27) of the first shaft are all connected to the solenoid valve group (7);The transmission gears on the three shafts (4) include a first gear (41), a second gear (42), and a third gear (43) spaced apart. The first gear (41), the second gear (42), and the third gear (43) are all fixedly mounted on the three shafts (4). The first gear (41) is constantly meshed with a transmission gear on one shaft (2). The second gear (42) meshes with a transmission gear on the fourth shaft (5). The third gear (43) meshes with a transmission gear on the second shaft (3) and a transmission gear on the fourth shaft (5).

2. The all-power shift transmission according to claim 1, characterized in that, The transmission gears on the second shaft (3) include a first gear (31), a second gear set, and a third gear (35) spaced apart. The first gear (31) is fixedly mounted on the second shaft (3), while the second gear set and the third gear (35) are rotatably mounted on the second shaft (3). The clutches on the second shaft (3) include a left clutch (36) and a right clutch (37). The left clutch (36) is located next to the second gear set and is designed to engage or disengage with the second gear set. The device (37) is located next to the third gear (35) of the two shafts for engaging or disengaging with the third gear (35) of the two shafts. The first gear (31) of the two shafts is constantly meshed with a transmission gear on the first shaft (2). The second gear set of the two shafts is meshed with a transmission gear on the first shaft (2) and a transmission gear on the third shaft (4). The third gear (35) of the two shafts is meshed with a transmission gear on the first shaft (2) and a transmission gear on the third shaft (4). The left clutch (36) and the right clutch (37) of the two shafts are both connected to the solenoid valve group (7).

3. The all-power shift transmission according to claim 2, characterized in that, The second gear set of the two shafts includes a second left gear (32) and a second right gear (33) of the two shafts arranged at intervals. The second left gear (32) and the second right gear (33) of the two shafts are rotatably mounted on the two shafts (3). The second left gear (32) and the second right gear (33) of the two shafts are fixedly connected by a bushing (34) to achieve synchronous rotation. The second left gear (32) of the two shafts meshes with a transmission gear on the three shafts (4). The second right gear (33) of the two shafts meshes with a transmission gear on the first shaft (2). The left clutch (36) of the two shafts is arranged next to the second right gear (33) of the two shafts for engaging or disengaging with the second right gear (33).

4. The all-power shift transmission according to claim 1, characterized in that, The transmission gears on the four shafts (5) include a first gear (51), a second gear (52), a third gear (53), and a fourth gear (54) spaced apart. The first gear (51) and the fourth gear (54) are fixedly mounted on the four shafts (5), while the second gear (52) and the third gear (53) are rotatably mounted on the four shafts (5). The clutches on the four shafts (5) include a left clutch (55) and a right clutch (56). The left clutch (55) is located on the second gear (51)... 52) is used to engage or disengage with the second gear (52) of the four shaft. The right clutch (56) of the four shaft is located next to the third gear (53) of the four shaft for engaging or disengaging with the third gear (53) of the four shaft. The first gear (51) and the fourth gear (54) of the four shaft are respectively engaged with the two transmission gears on the fifth shaft (6). The second gear (52) and the third gear (53) of the four shaft are respectively engaged with the two transmission gears on the third shaft (4). The left clutch (55) and the right clutch (56) of the four shaft are both connected to the solenoid valve group (7).

5. The all-power shift transmission according to claim 1, characterized in that, The transmission gears on the five-axis (6) include a five-axis first gear (61) and a five-axis second gear (62) spaced apart. Both the five-axis first gear (61) and the five-axis second gear (62) are rotatably mounted on the five-axis (6). The clutches on the five-axis (6) include a five-axis left clutch (63) and a five-axis right clutch (64). The five-axis left clutch (63) is located next to the five-axis first gear (61) and is used to engage or disengage with the five-axis first gear (61). The five-axis right clutch (64) is located next to the five-axis second gear (62) and is used to engage or disengage with the five-axis second gear (62). The five-axis first gear (61) and the five-axis second gear (62) are respectively meshed with two transmission gears on the four-axis (5). Both the five-axis left clutch (63) and the five-axis right clutch (64) are connected to the solenoid valve group (7).

6. A fully power-shift transmission according to any one of claims 1 to 5, characterized in that, The gearbox housing (1) includes a front cover (11) and a rear cover (12) fixedly connected by bolts. The first shaft (2), the second shaft (3), the third shaft (4), the fourth shaft (5) and the fifth shaft (6) are all located between the front cover (11) and the rear cover (12). The two ends of the first shaft (2), the second shaft (3), the third shaft (4), the fourth shaft (5) and the fifth shaft (6) are rotatably connected to the front cover (11) and the rear cover (12) respectively.

7. A full-power shift transmission according to claim 6, characterized in that, The two ends of the first shaft (2), the second shaft (3), the third shaft (4), the fourth shaft (5) and the fifth shaft (6) are rotatably connected to the front cover (11) and the rear cover (12) respectively through bearings.

8. A tractor, characterized in that, Including the full power shift transmission as described in any one of claims 1 to 7.

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