Six-gear transmission gearbox for mine vehicle

Abstract

The six-gear transmission gearbox for the mine vehicle comprises a shell, an input shaft, a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft and an output shaft are arranged in the shell, and the input shaft, the second transmission shaft, the fourth transmission shaft and the output shaft are parallel to one another and are arranged in a coplanar mode. The first transmission shaft and the input shaft are coaxially arranged, the third transmission shaft and the second transmission shaft are coaxially arranged, the fifth transmission shaft and the fourth transmission shaft are coaxially arranged, an input gear is arranged on the input shaft, a first clutch is arranged between the input shaft and the first transmission shaft, and a second clutch is arranged between the third gear and the second transmission shaft. A third clutch is arranged between the second transmission shaft and the third transmission shaft, a fourth clutch is arranged between the fifth gear and the third transmission shaft, and a fifth clutch is arranged between the fourth transmission shaft and the fifth transmission shaft. According to the six-gear transmission gearbox for the mine vehicle, the symmetry and the stability of the overall structure are improved, and the manufacturing difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a six-gear transmission gearbox for mining vehicles. Background Art

[0002] Existing mining vehicles generally use multi-speed transmissions to transmit power to the travel wheels. Multi-speed transmissions are important components for enabling multi-speed operation of mining vehicles. Existing Chinese patent document No. 202321653124.0 discloses a six-speed transmission, specifically comprising a first housing and a second housing, the first housing being fixedly connected to the second housing. The first housing houses an input shaft, a first transmission shaft, and a second transmission shaft, and the second housing houses a third transmission shaft and an output shaft. The input shaft has an input gear, the first transmission shaft has first, second, third, and fourth transmission gears, the second transmission shaft has fifth and sixth transmission gears, the third transmission shaft has seventh, eighth, and ninth transmission gears, and the output shaft has an output gear. Clutches are respectively provided between the third transmission gear and the first transmission gear, between the third transmission gear and the second transmission gear, between the sixth transmission gear and the fifth transmission gear, between the sixth transmission gear and the ninth transmission gear, and between the seventh transmission gear and the third transmission shaft. This six-speed transmission includes an input shaft, an output shaft, a coaxial transmission shaft assembly consisting of a first transmission shaft, a second transmission shaft, and a third transmission shaft, arranged parallel to and between the input and output shafts, and an idler shaft. The transmission structure is poorly designed, requiring the coaxial transmission shaft assembly consisting of the input, output, first, second, and third transmission shafts to be arranged in different planes rather than coplanarly, resulting in poor overall symmetry, structural stability, and manufacturing difficulties. Furthermore, multiple clutches share a single operating valve or multiple operating valves, meaning that the operation of one clutch depends on the operation of other clutches, resulting in a high rate of operational failures. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a six-speed transmission gearbox for mining vehicles which improves the symmetry and stability of the overall structure and reduces the manufacturing difficulty.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A six-speed transmission gearbox for a mining vehicle comprises a housing, an input shaft, a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft and an output shaft are arranged in the housing, the input shaft, the second transmission shaft, the fourth transmission shaft and the output shaft are parallel to each other and arranged in the same plane, the first transmission shaft is coaxially arranged with the input shaft, the third transmission shaft is coaxially arranged with the second transmission shaft, the fifth transmission shaft and the fourth transmission shaft are coaxially arranged, an input gear is provided on the input shaft for synchronous rotation, a first gear and a second gear are provided on the first transmission shaft for synchronous rotation, a third gear is provided on the second transmission shaft for rotation and a fourth gear is provided for synchronous rotation, a fifth gear is provided on the third transmission shaft for rotation and a sixth gear is provided for synchronous rotation, and a third gear is provided on the fourth transmission shaft for synchronous rotation. Seven gears, an eighth gear and a ninth gear are provided on the fifth transmission shaft for synchronous rotation, an output gear is provided on the output shaft for synchronous rotation, an idler shaft is also provided in the housing, an idler gear is provided on the idler shaft, the input gear and the third gear are both engaged with the idler gear, the first gear and the seventh gear are both engaged with the fourth gear, the second gear is engaged with the fifth gear, the sixth gear is engaged with the ninth gear, the eighth gear is engaged with the output gear, a first clutch is provided between the input shaft and the first transmission shaft, a second clutch is provided between the third gear and the second transmission shaft, a third clutch is provided between the second transmission shaft and the third transmission shaft, a fourth clutch is provided between the fifth gear and the third transmission shaft, and a fifth clutch is provided between the fourth transmission shaft and the fifth transmission shaft.

[0006] As a further improvement of the above technical solution:

[0007] The input gear is fixedly connected to the input shaft.

[0008] The first gear is fixedly connected to the first transmission shaft, and the second gear is connected to the first transmission shaft via a spline.

[0009] The third gear is connected to the second transmission shaft via a bearing, and the fourth gear is fixedly connected to the second transmission shaft.

[0010] The fifth gear is connected to the third transmission shaft via a bearing, and the sixth gear is connected to the third transmission shaft via a spline.

[0011] The seventh gear is fixedly connected to the fourth transmission shaft, the eighth gear and the ninth gear are both spline-connected to the fifth transmission shaft, the output gear is spline-connected to the output shaft, and the idler gear is fixedly connected to the idler shaft.

[0012] The input shaft and the first transmission shaft have opposite ends that are rotationally sleeved, the second transmission shaft and the third transmission shaft have opposite ends that are rotationally sleeved, and the fourth transmission shaft and the fifth transmission shaft have opposite ends that are rotationally sleeved.

[0013] A first mounting cavity and a second mounting cavity are provided in the shell; the first transmission shaft, the second transmission shaft and the fourth transmission shaft are all provided in the first mounting cavity; the third transmission shaft, the fifth transmission shaft and the output shaft are all provided in the second mounting cavity; the input gear, the first gear, the third gear, the fourth gear, the seventh gear, the first clutch, the second clutch, the third clutch and the fifth clutch are all located in the first mounting cavity; the second gear, the fifth gear, the sixth gear, the eighth gear, the ninth gear, the output gear and the fourth clutch are all located in the second mounting cavity.

[0014] A torque converter is provided outside the housing and is transmission-connected to the input shaft.

[0015] An oil supply mechanism is provided outside the housing and is transmission-connected to the torque converter. The first clutch, the second clutch, the third clutch, the fourth clutch and the fifth clutch are respectively connected to the oil supply mechanism via independent electro-hydraulic proportional control valves.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The utility model provides a six-speed transmission gearbox for mining vehicles, wherein the input shaft, the second transmission shaft, the fourth transmission shaft and the output shaft are parallel to each other and arranged in the same plane, the first transmission shaft is coaxially arranged with the input shaft, the third transmission shaft is coaxially arranged with the second transmission shaft, the fifth transmission shaft and the fourth transmission shaft are coaxially arranged, and an input gear is provided on the input shaft to rotate synchronously, thereby improving the symmetry and stability of the overall structure and reducing the manufacturing difficulty.

[0018] In the six-speed transmission gearbox for mining vehicles of the present invention, the first clutch, the second clutch, the third clutch, the fourth clutch and the fifth clutch are respectively connected to the oil supply mechanism through independent electro-hydraulic proportional control valves. In this way, each clutch is controlled and operated by its own electro-hydraulic proportional control valve, without relying on the control of other clutches, thereby reducing the high failure rate of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the first state of the six-speed transmission gearbox for mining vehicles of the utility model.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the second state of the six-speed transmission gearbox for mining vehicles of the utility model.

[0021] Figure 3 It is a front view of a six-speed transmission gearbox for mining vehicles according to the present invention.

[0022] Figure 4 It is a rear view of a six-speed transmission gearbox for mining vehicles according to the present invention.

[0023] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure of HH.

[0024] Figure 6 yes Figure 3 Schematic diagram of the cross-sectional structure of H1-H1.

[0025] Figure 7 The utility model is a connection principle diagram of an oil supply mechanism, a clutch and an electro-hydraulic proportional control valve of a six-speed transmission gearbox for mining vehicles.

[0026] The numbers in the figure represent:

[0027] 1. Housing; 11. First mounting cavity; 12. Second mounting cavity; 13. Torque converter; 14. Oil supply mechanism; 15. Electro-hydraulic proportional control valve; 2. Input shaft; 21. Input gear; 23. First clutch; 3. First transmission shaft; 31. First gear; 32. Second gear; 4. Second transmission shaft; 41. Third gear; 414. Second clutch; 42. Fourth gear; 45. Third clutch; 5. Third transmission shaft; 51. Fifth gear; 515. Fourth clutch; 52. Sixth gear; 6. Fourth transmission shaft; 61. Seventh gear; 67. Fifth clutch; 7. Fifth transmission shaft; 71. Eighth gear; 72. Ninth gear; 8. Output shaft; 81. Output gear; 9. Idle shaft; 91. Idle gear. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] Example 1:

[0033] Figures 1 to 7 An embodiment of a six-speed transmission gearbox for mining vehicles of the present invention is shown. The six-speed transmission gearbox for mining vehicles of the present invention comprises a housing 1. An input shaft 2, a first transmission shaft 3, a second transmission shaft 4, a third transmission shaft 5, a fourth transmission shaft 6, a fifth transmission shaft 7 and an output shaft 8 are arranged in the housing 1. The input shaft 2, the second transmission shaft 4, the fourth transmission shaft 6 and the output shaft 8 are arranged parallel to each other and in the same plane. The first transmission shaft 3 is coaxially arranged with the input shaft 2, the third transmission shaft 5 is coaxially arranged with the second transmission shaft 4, the fifth transmission shaft 7 and the fourth transmission shaft 6 are coaxially arranged. An input gear 21 is provided on the input shaft 2 for synchronous rotation, a first gear 31 and a second gear 32 are provided for synchronous rotation on the first transmission shaft 3, a third gear 41 is provided for rotation on the second transmission shaft 4, a fourth gear 42 is provided for synchronous rotation, a fifth gear 51 is provided for rotation on the third transmission shaft 5, a sixth gear 52 is provided for synchronous rotation, and a sixth gear 53 is provided for rotation on the fourth transmission shaft 6. A seventh gear 61 is provided for synchronous rotation, an eighth gear 71 and a ninth gear 72 are provided for synchronous rotation on the fifth transmission shaft 7, an output gear 81 is provided for synchronous rotation on the output shaft 8, an idler shaft 9 is also provided in the housing 1, an idler gear 91 is provided on the idler shaft 9, the input gear 21 and the third gear 41 are both engaged with the idler gear 91, the first gear 31 and the seventh gear 61 are both engaged with the fourth gear 42, the second gear 32 is engaged with the fifth gear 51, the sixth gear 52 is engaged with the ninth gear 72, the eighth gear 71 is engaged with the output gear 81, a first clutch 23 is provided between the input shaft 2 and the first transmission shaft 3, a second clutch 414 is provided between the third gear 41 and the second transmission shaft 4, a third clutch 45 is provided between the second transmission shaft 4 and the third transmission shaft 5, a fourth clutch 515 is provided between the fifth gear 51 and the third transmission shaft 5, and a fifth clutch 67 is provided between the fourth transmission shaft 6 and the fifth transmission shaft 7.

[0034] In this mining vehicle six-speed transmission gearbox, the input shaft 2, the second transmission shaft 4, the fourth transmission shaft 6 and the output shaft 8 are parallel to each other and arranged in the same plane. The first transmission shaft 3 is coaxially arranged with the input shaft 2, the third transmission shaft 5 is coaxially arranged with the second transmission shaft 4, the fifth transmission shaft 7 and the fourth transmission shaft 6 are coaxially arranged, and an input gear 21 is provided on the input shaft 2 to rotate synchronously, which improves the symmetry and stability of the overall structure and reduces the manufacturing difficulty.

[0035] The power transmission route for forward 1st gear is: input shaft 2 → first clutch 23 → first transmission shaft 3 → second gear 32 → fifth gear 51 → fourth clutch 515 → third transmission shaft 5 → sixth gear 52 → ninth gear 72 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this route, the first clutch 23 combines the input shaft 2 and the first transmission shaft 3 for synchronous rotation, while the fourth clutch 515 combines the fifth gear 51 and the third transmission shaft 5 for synchronous rotation.

[0036] The power transmission route for forward 2nd gear is: input shaft 2 → first clutch 23 → first transmission shaft 3 → first gear 31 → fourth gear 42 → second transmission shaft 4 → third clutch 45 → third transmission shaft 5 → sixth gear 52 → ninth gear 72 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this route, the first clutch 23 combines the input shaft 2 and the first transmission shaft 3 for synchronous rotation, and the third clutch 45 combines the second transmission shaft 4 and the third transmission shaft 5 for synchronous rotation.

[0037] The power transmission route for forward 3rd gear is: input shaft 2 → first clutch 23 → first transmission shaft 3 → first gear 31 → fourth gear 42 → seventh gear 61 → fourth transmission shaft 6 → fifth clutch 67 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this route, first clutch 23 combines input shaft 2 and first transmission shaft 3 for synchronous rotation, while fifth clutch 67 combines fourth transmission shaft 6 and fifth transmission shaft 7 for synchronous rotation.

[0038] The power transmission route for reverse first gear is: input shaft 2 → input gear 21 → idler gear 91 → third gear 41 → second clutch 414 → second transmission shaft 4 → fourth gear 42 → first gear 31 → second gear 32 → fifth gear 51 → fourth clutch 515 → third transmission shaft 5 → sixth gear 52 → ninth gear 72 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this route, second clutch 414 couples third gear 41 with second transmission shaft 4 for synchronous rotation, and fourth clutch 515 couples fifth gear 51 with third transmission shaft 5 for synchronous rotation.

[0039] The power transmission path for reverse 2nd gear is: input shaft 2 → input gear 21 → idler gear 91 → third gear 41 → second clutch 414 → second transmission shaft 4 → third clutch 45 → third transmission shaft 5 → sixth gear 52 → ninth gear 72 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this path, second clutch 414 couples third gear 41 with second transmission shaft 4 for synchronous rotation, while third clutch 45 couples second transmission shaft 4 with third transmission shaft 5 for synchronous rotation.

[0040] The power transmission route for reverse 3rd gear is: input shaft 2 → input gear 21 → idler gear 91 → third gear 41 → second clutch 414 → second transmission shaft 4 → fourth gear 42 → seventh gear 61 → fourth transmission shaft 6 → fifth clutch 67 → fifth transmission shaft 7 → eighth gear 71 → output gear 81 → output shaft 8. In this route, second clutch 414 couples third gear 41 with second transmission shaft 4 for synchronous rotation, and fifth clutch 67 couples fourth transmission shaft 6 with fifth transmission shaft 7 for synchronous rotation.

[0041] The first clutch 23 is used to combine the input shaft 2 and the first transmission shaft 3 for synchronous rotation and separation; the second clutch 414 is used to combine the third gear 41 and the second transmission shaft 4 for synchronous rotation and separation; the third clutch 45 is used to combine the second transmission shaft 4 and the third transmission shaft 5 for synchronous rotation and separation; the fourth clutch 515 is used to combine the fifth gear 51 and the third transmission shaft 5 for synchronous rotation and separation; the fifth clutch 67 is used to combine the fourth transmission shaft 6 and the fifth transmission shaft 7 for synchronous rotation and separation.

[0042] Furthermore, if Figure 5 As shown, in this embodiment, the input gear 21 is fixedly connected to the input shaft 2, such as by integral molding or welding, and the connection strength is high.

[0043] Furthermore, if Figure 5 As shown, in this embodiment, the first gear 31 is fixedly connected to the first transmission shaft 3, and the second gear 32 is splined to the first transmission shaft 3. The first gear 31 is fixedly connected to the first transmission shaft 3, such as by integral molding or welding, to provide a high connection strength. The second gear 32 is splined to the first transmission shaft 3, and the second gear 32 is axially limited by a removable stopper or stopper on the first transmission shaft 3 to prevent axial displacement of the second gear 32 on the first transmission shaft 3, facilitating removal and replacement of the second gear 32.

[0044] Furthermore, if Figure 5As shown, in this embodiment, the third gear 41 is connected to the second transmission shaft 4 via a bearing, and the fourth gear 42 is fixedly connected to the second transmission shaft 4. The third gear 41 is rotatably mounted on the second transmission shaft 4 via the bearing, allowing for smooth rotation. The fourth gear 42 is fixedly connected to the second transmission shaft 4, such as by integral molding or welding.

[0045] Furthermore, if Figure 5 As shown, in this embodiment, the fifth gear 51 is connected to the third transmission shaft 5 via a bearing, and the sixth gear 52 is connected to the third transmission shaft 5 via a spline. The fifth gear 51 is rotatably mounted on the third transmission shaft 5 via the bearing, ensuring smooth rotation. The sixth gear 52 is splined to the third transmission shaft 5 and is axially limited by a removable stopper or stopper on the third transmission shaft 5, preventing axial displacement of the sixth gear 52 on the third transmission shaft 5 and facilitating its removal and replacement.

[0046] Furthermore, if Figure 5 As shown, in this embodiment, the seventh gear 61 is fixedly connected to the fourth transmission shaft 6, the eighth gear 71 and the ninth gear 72 are both splined to the fifth transmission shaft 7, the output gear 81 is splined to the output shaft 8, and the idler gear 91 is fixedly connected to the idler shaft 9. The seventh gear 61 is fixedly connected to the fourth transmission shaft 6, such as by integral molding or welding. The eighth gear 71 and the ninth gear 72 are both splined to the fifth transmission shaft 7, and the eighth gear 71 and the ninth gear 72 are respectively limited in the axial direction of the fifth transmission shaft 7 by a detachable stopper or stopper, preventing the eighth gear 71 and the ninth gear 72 from axially displacing on the fifth transmission shaft 7, thereby facilitating the removal and replacement of the eighth gear 71 and the ninth gear 72.

[0047] Furthermore, if Figure 5 As shown, in this embodiment, the opposite ends of the input shaft 2 and the first transmission shaft 3 are rotatably connected, the opposite ends of the second transmission shaft 4 and the third transmission shaft 5 are rotatably connected, and the opposite ends of the fourth transmission shaft 6 and the fifth transmission shaft 7 are rotatably connected. The rotatable connection between coaxial shafts, such as through a rotating member, improves the connection strength.

[0048] Furthermore, if Figure 5As shown, in this embodiment, a first mounting cavity 11 and a second mounting cavity 12 are provided in the shell 1, the first transmission shaft 3, the second transmission shaft 4 and the fourth transmission shaft 6 are all provided in the first mounting cavity 11, the third transmission shaft 5, the fifth transmission shaft 7 and the shaft output shaft 8 are all provided in the second mounting cavity 12, the input gear 21, the first gear 31, the third gear 41, the fourth gear 42, the seventh gear 61, the first clutch 23, the second clutch 414, the third clutch 45 and the fifth clutch 67 are all located in the first mounting cavity 11, and the second gear 32, the fifth gear 51, the sixth gear 52, the eighth gear 71, the ninth gear 72, the output gear 81 and the fourth clutch 515 are all located in the second mounting cavity 12.

[0049] Furthermore, in this embodiment, a torque converter 13 is provided outside the housing 1 , and the torque converter 13 is transmission-connected to the input shaft 2 .

[0050] Example 2:

[0051] The structure of the six-speed transmission for mining vehicles in this embodiment is essentially the same as that of the first embodiment, differing only in that: in this embodiment, an oil supply mechanism 14 is provided externally to the housing 1 and is in transmission connection with the torque converter 13. The first clutch 23, the second clutch 414, the third clutch 45, the fourth clutch 515, and the fifth clutch 67 are each connected to the oil supply mechanism 14 via an independent electro-hydraulic proportional control valve 15. The first clutch 23, the second clutch 414, the third clutch 45, the fourth clutch 515, and the fifth clutch 67 are each connected to the oil supply mechanism 14 via an independent electro-hydraulic proportional control valve 15. Thus, each clutch is controlled by its own electro-hydraulic proportional control valve 15, eliminating reliance on the control of other clutches and reducing operational failure rates.

[0052] The electro-hydraulic proportional control valve 15 is preferably a two-position, three-way proportional pressure regulating solenoid valve, which is responsible for adjusting the clutch oil filling pressure during the shifting process. The two-position, three-way proportional pressure regulating solenoid valve can control the opening and closing of each corresponding clutch oil circuit according to conventional shifting logic, and will not be described in detail.

[0053] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into equivalent embodiments with equivalent variations. Therefore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A six-speed transmission gearbox for a mining vehicle, comprising a housing (1), characterized in that: An input shaft (2), a first transmission shaft (3), a second transmission shaft (4), a third transmission shaft (5), a fourth transmission shaft (6), a fifth transmission shaft (7) and an output shaft (8) are provided in the housing (1); the input shaft (2), the second transmission shaft (4), the fourth transmission shaft (6) and the output shaft (8) are parallel to each other and arranged in the same plane; the first transmission shaft (3) is coaxially arranged with the input shaft (2); the third transmission shaft (5) is coaxially arranged with the second transmission shaft (4); the fifth transmission shaft (7) is coaxially arranged with the fourth transmission shaft (6); The input shaft (2) is provided with an input gear (21) that rotates synchronously, the first transmission shaft (3) is provided with a first gear (31) and a second gear (32) that rotate synchronously, the second transmission shaft (4) is provided with a third gear (41) that rotates and a fourth gear (42) that rotates synchronously, the third transmission shaft (5) is provided with a fifth gear (51) that rotates and a sixth gear (52) that rotates synchronously, the fourth transmission shaft (6) is provided with a seventh gear (61) that rotates synchronously, the fifth transmission shaft (7) is provided with an eighth gear ( 71) and the ninth gear (72), the shaft output shaft (8) is provided with an output gear (81) that rotates synchronously, the housing (1) is further provided with an idler shaft (9), the idler shaft (9) is provided with an idler gear (91), the input gear (21) and the third gear (41) are both meshed with the idler gear (91), the first gear (31) and the seventh gear (61) are both meshed with the fourth gear (42), the second gear (32) is meshed with the fifth gear (51), the sixth gear (52) is meshed with the ninth gear (72 ... first gear (31) and the seventh gear (61) are both meshed with the fourth gear (42), the second gear (32) is meshed with the fifth gear (51), the sixth gear (52) is meshed with the ninth gear (72), the first gear (31) and the The eighth gear (71) is meshed with the output gear (81), a first clutch (23) is provided between the input shaft (2) and the first transmission shaft (3), a second clutch (414) is provided between the third gear (41) and the second transmission shaft (4), a third clutch (45) is provided between the second transmission shaft (4) and the third transmission shaft (5), a fourth clutch (515) is provided between the fifth gear (51) and the third transmission shaft (5), and a fifth clutch (67) is provided between the fourth transmission shaft (6) and the fifth transmission shaft (7).

2. The six-speed transmission gearbox for mining vehicles according to claim 1, characterized in that: The input gear (21) is fixedly connected to the input shaft (2).

3. The six-speed transmission gearbox for mining vehicles according to claim 1, characterized in that: The first gear (31) is fixedly connected to the first transmission shaft (3), and the second gear (32) is connected to the first transmission shaft (3) via a spline.

4. The six-speed transmission gearbox for mining vehicles according to claim 1, characterized in that: The third gear (41) is connected to the second transmission shaft (4) via a bearing, and the fourth gear (42) is fixedly connected to the second transmission shaft (4).

5. The six-speed transmission gearbox for mining vehicles according to claim 1, characterized in that: The fifth gear (51) is connected to the third transmission shaft (5) via a bearing, and the sixth gear (52) is connected to the third transmission shaft (5) via a spline.

6. The six-speed transmission gearbox for mining vehicles according to claim 1, characterized in that: The seventh gear (61) is fixedly connected to the fourth transmission shaft (6), the eighth gear (71) and the ninth gear (72) are both spline-connected to the fifth transmission shaft (7), the output gear (81) is spline-connected to the output shaft (8), and the idler gear (91) is fixedly connected to the idler shaft (9).

7. The six-speed transmission gearbox for mining vehicles according to any one of claims 1 to 6, characterized in that: The opposite ends of the input shaft (2) and the first transmission shaft (3) are rotationally sleeved, the opposite ends of the second transmission shaft (4) and the third transmission shaft (5) are rotationally sleeved, and the opposite ends of the fourth transmission shaft (6) and the fifth transmission shaft (7) are rotationally sleeved.

8. The six-speed transmission gearbox for mining vehicles according to any one of claims 1 to 6, characterized in that: A first mounting cavity (11) and a second mounting cavity (12) are provided in the housing (1); the first transmission shaft (3), the second transmission shaft (4) and the fourth transmission shaft (6) are all provided in the first mounting cavity (11); the third transmission shaft (5), the fifth transmission shaft (7) and the output shaft (8) are all provided in the second mounting cavity (12); the input gear (21), the first gear (31), the third gear (41), the fourth gear (42), the seventh gear (61), the first clutch (23), the second clutch (414), the third clutch (45) and the fifth clutch (67) are all located in the first mounting cavity (11); the second gear (32), the fifth gear (51), the sixth gear (52), the eighth gear (71), the ninth gear (72), the output gear (81) and the fourth clutch (515) are all located in the second mounting cavity (12).

9. The six-speed transmission gearbox for mining vehicles according to any one of claims 1 to 6, characterized in that: A torque converter (13) is provided outside the housing (1), and the torque converter (13) is transmission-connected to the input shaft (2).

10. The six-speed transmission gearbox for mining vehicles according to any one of claims 1 to 6, characterized in that: An oil supply mechanism (14) is provided outside the housing (1), and the oil supply mechanism (14) is transmission-connected to the torque converter (13). The first clutch (23), the second clutch (414), the third clutch (45), the fourth clutch (515), and the fifth clutch (67) are respectively connected to the oil supply mechanism (14) via independent electro-hydraulic proportional control valves (15).

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