A mechanical gearbox device for unpowered interruptible gear shifting

Abstract

The application discloses a kind of mechanical transmission device of unpowered interrupt gear shifting, including built-in transmission shaft, hollow transmission shaft, gearbox shell, 1-2 gear shifting engagement sleeve, 1 gear double coupling gear, 2 gear double coupling gear, 3-4 gear shifting engagement sleeve, 3 gear double coupling gear, 4 gear double coupling gear, torque transmission adjusting device input shaft, left control oil circuit, torque transmission adjusting device, right control oil circuit, torque adjusting device output shaft, torque transmission driving gear, torque transmission device connecting shaft, gearbox output shaft, torque transmission driven gear, 1 gear driven gear, 2 gear driven gear, 3 gear driven gear, 4 gear driven gear.When gear shifting, the power of hollow transmission shaft is cut off by the main clutch of vehicle, which facilitates to connect gear position, and the built-in transmission shaft and torque adjusting device continuously provide power to gearbox output shaft, so that the power output of gearbox during mechanical gear shifting is maintained, and the mechanical gearbox unpowered interrupt gear shifting is realized.

Description

Technical Field

[0001] This invention belongs to the field of power transmission for vehicles and tractors, and specifically relates to a mechanical gearbox device and shifting method with uninterrupted power shifting. Background Technology

[0002] In the field of vehicle drive wheel transmission systems, especially for off-highway vehicles, continuous driving force is required for the drive wheels during traction operations or continuous uphill driving. However, under these conditions, the drive load is constantly changing, requiring the vehicle to adjust gears according to these changes. For example, when the drive load increases to the engine's maximum output torque, the transmission system needs to downshift to increase torque and improve its load-bearing capacity; when the drive load decreases, it needs to upshift to increase speed and improve operating efficiency. However, current vehicle mechanical transmissions generally use sliding gear shifting, sleeve shifting, and synchronizer shifting. All three shifting methods require the engagement of a clutch at the transmission input shaft. When a shift is needed, the clutch must disengage, power must be cut off, and the transmission can then shift gears. During the period when power is cut off from the transmission input shaft, the driving force of the vehicle's drive wheels drops rapidly. If the vehicle is engaged in towing operations, it will stop quickly; the vehicle will restart after the transmission completes the shift, thus affecting the quality of the towing operation. If the vehicle is climbing at low speed, it may stop or reverse during the period when power is cut off from the transmission input shaft due to increased load, increasing the safety risks. Therefore, in these operating conditions, a transmission capable of uninterrupted power shifting is needed, so that the transmission output power is not interrupted during the shifting process in towing or low-speed climbing operations, providing continuous driving force to the vehicle's drive wheels. Summary of the Invention

[0003] The purpose of this invention is to provide a mechanical gearbox device for vehicles that allows for uninterrupted gear shifting, enabling the vehicle's transmission system to continuously provide power to the drive wheels during gear shifting, thereby improving the vehicle's traction capabilities and driving safety during low-speed hill climbing.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: a mechanical gearbox device with non-powered interrupted gear shifting, comprising a built-in drive shaft, a hollow drive shaft, a gearbox housing, a double gear set, a shift engagement sleeve, a torque transmission adjustment device, and a torque transmission adjustment device input shaft, a torque transmission adjustment device driven plate output shaft, an output drive gear, a connecting shaft, a gearbox output shaft, an output driven gear, and a driven gear set located on the torque transmission adjustment device; the double gear set is mounted on the hollow drive shaft via sliding bearings and is respectively in constant mesh with the driven gear set, and the driven gear set is connected to the gearbox output shaft via splines. The shift engagement sleeve is mounted on the hollow drive shaft via a spline and is axially movable along the hollow drive shaft. The built-in drive shaft passes through the inner hole of the hollow drive shaft but does not contact it. The built-in drive shaft is fixedly connected to the input shaft of the torque transmission adjustment device. The torque transmission adjustment device is fixedly mounted on the inner housing of the gearbox. One end of the connecting shaft is fixedly connected to the output shaft of the driven plate of the torque transmission adjustment device, and the other end is mounted on the gearbox housing via a bearing. The output drive gear is connected to the connecting shaft via a spline and meshes with the output driven gear. The output driven gear is connected to the output shaft of the gearbox via a spline.

[0005] In the above scheme, the double gear set includes a 2nd gear double gear, a 3rd gear double gear, and a 4th gear double gear; the gear shifting engagement sleeve includes a 1st-2nd gear shifting engagement sleeve and a 3rd-4th gear shifting engagement sleeve; the driven gear set includes a 4th gear driven gear, a 3rd gear driven gear, a 2nd gear driven gear, and a 1st gear driven gear; the 1st gear double gear, the 2nd gear double gear, the 3rd gear double gear, and the 4th gear double gear are respectively in constant mesh with the 1st gear driven gear, the 2nd gear driven gear, the 3rd gear driven gear, and the 4th gear driven gear.

[0006] In the above scheme, the torque transmission adjustment device includes a driving disc and a driven disc. The driving disc is provided with a driving disc annular blade, and the center of each driving disc annular blade is concentric with the input shaft. A number of driving disc blades are fixed on the outer surface of the driving disc annular blade. The driven disc is connected to the output shaft of the torque transmission adjustment device via a spline. The driven disc has a degree of freedom of movement relative to the output shaft of the torque transmission adjustment device along the spline direction. The driven disc is provided with a driven disc annular blade, and a number of triangular teeth are fixed on the inner side of the driven disc annular blade. The center of each driven disc annular blade is concentric with the spline on the driven disc.

[0007] In the above scheme, the torque transmission adjustment device includes a torque transmission device housing, a left control oil circuit and a right control oil circuit. The torque transmission device housing is filled with oil. The driven plate divides the torque transmission device housing into left and right chambers. The left control oil circuit and the right control oil circuit are respectively connected to the left and right chambers.

[0008] In the above scheme, a driven disc sealing ring is provided between the driven disc and the torque transmission device housing.

[0009] This invention provides a torque transmission regulating device, including a driving disc, a driven disc, a torque transmission device housing, a left control oil circuit, and a right control oil circuit. The driving disc is provided with driving disc annular blades, the center of each driving disc annular blade is concentric with the input shaft, and a number of driving disc blades are fixed on the outer surface of the driving disc annular blades. The driven disc is connected to the output shaft of the torque transmission regulating device driven disc via a spline, and the driven disc has a degree of freedom of movement relative to the output shaft of the torque transmission regulating device driven disc along the spline direction. The driven disc is provided with driven disc annular blades, and a number of triangular teeth are fixed on the inner side of the driven disc annular blades. The center of each driven disc annular blade is concentric with the spline on the driven disc. The torque transmission device housing is filled with oil, and the driven disc divides the torque transmission device housing into left and right cavities. The left control oil circuit and the right control oil circuit are respectively connected to the left and right cavities.

[0010] This invention also provides a method for torque transmission adjustment, comprising the following steps: when the positions of the driving disc annular blades and the driven disc annular blades overlap, the input shaft of the driving disc receives power input, and the driving disc annular blades rotate under the drive shaft. The blades on the outer side of the annular blades push the oil in the inner cavity of the housing to perform a combined rotational and centrifugal motion. The oil performing the rotational and centrifugal motion impacts the driven disc annular blades and the inner triangular teeth, generating a force on the driven disc annular blades, thereby outputting torque on the driven disc output shaft. The magnitude of the force on the driven disc annular blades is proportional to the overlapping area of ​​the driving disc annular blades and the driven disc annular blades. By changing the overlapping area of ​​the driving disc annular blades and the driven disc annular blades, the force exerted by the oil on the annular blades is changed, thereby changing the output torque of the driven disc output shaft.

[0011] This invention also provides a method for performing uninterrupted gear shifting in a mechanical gearbox. When a gear shift is required, oil is first introduced into the right control oil pipe of the torque adjustment device, pushing the driven plate to move to the left, causing the annular plates of the driven plate to overlap with those of the driving plate. Since the built-in drive shaft drives the driving plate to rotate, the driving plate transmits power to the driven plate through the oil in the torque transmission device. The driven plate then transmits the power to the gearbox output shaft through the driven plate output shaft, connecting shaft, output driving gear, and output driven gear. Next, the power to the hollow drive shaft of the gearbox is cut off, and the gear is disengaged. First, shifting gears; during this process, the built-in drive shaft drives the transmission output shaft independently via the torque adjustment device and connecting shaft, and the torque output gear. Second, after the gear shift is complete, the power from the hollow drive shaft of the transmission is connected, and the power from the hollow drive shaft drives the transmission output shaft through the gear shift gear. Finally, oil enters the left control oil pipe of the torque adjustment device, pushing the driven plate to move to the right, so that the annular plates on the driven plate and the annular plates on the driving plate do not overlap. The torque transmission device cannot transmit the torque of the built-in hollow drive shaft, and at this time the transmission output shaft is powered solely by the gear shift gear, and the shifting process ends without power interruption.

[0012] The beneficial effects of the present invention are as follows: (1) The device of the present invention continuously provides power to the output shaft of the gearbox through the torque adjustment device, maintaining the power output of the gearbox during mechanical shifting, and realizing uninterrupted shifting of the mechanical gearbox. (2) The present invention provides a gearbox for vehicles that can shift without interruption of power, which enables the vehicle to continuously provide driving force to the drive wheels during shifting, giving the vehicle the characteristic of continuous traction and improving the vehicle's passability in complex terrain. Attached Figure Description

[0013] Figure 1 This is a simplified structural diagram of the shift-interruption-free transmission in this invention.

[0014] Figure 2 This is a structural diagram of the torque transmission adjustment device in this invention.

[0015] Figure 3 This is a front view of the active disk structure in this invention.

[0016] Figure 4 This is a left view of the active disk structure in this invention.

[0017] Figure 5 This is a front view of the driven disk structure in this invention.

[0018] Figure 6 This is a left view of the driven disk structure in this invention.

[0019] Figure 7 This is a schematic diagram illustrating the working principle of the torque adjustment device in this invention.

[0020] Figure 8 The principle of the uninterrupted shift gearbox in this invention for shifting from 1st to 2nd gear. Figure 1 .

[0021] Figure 9 The principle of the uninterrupted shift gearbox in this invention for shifting from 1st to 2nd gear. Figure 2 .

[0022] Figure 10 The principle of the uninterrupted shift gearbox in this invention for shifting from 1st to 2nd gear. Figure 3 .

[0023] Figure 11 The principle of the uninterrupted shift gearbox in this invention for shifting from 1st to 2nd gear. Figure 4 .

[0024] Figure 12 The principle of the uninterrupted shift gearbox in this invention for shifting from 1st to 2nd gear. Figure 5 .

[0025] Figure 13 This invention presents an application example of the uninterrupted shifting gearbox and its shifting principle. Figure 1 .

[0026] Figure 14 This invention presents an application example of the uninterrupted shifting gearbox and its shifting principle. Figure 2 .

[0027] Figure 15 This invention presents an application example of the uninterrupted shifting gearbox and its shifting principle. Figure 3 .

[0028] Figure 16 This invention presents an application example of the uninterrupted shifting gearbox and its shifting principle. Figure 4 .

[0029] Figure 17 This invention presents an application example of the uninterrupted shifting gearbox and its shifting principle. Figure 5 .

[0030] In the diagram: 1. Built-in drive shaft 2. Hollow drive shaft 3. Gearbox housing 4. 1st gear double gear 5. 1st-2nd gear shift sleeve 6. 2nd gear double gear 7. 3rd gear double gear 8. 3rd-4th gear shift sleeve 9. 4th gear double gear 10. Input shaft 11. Left control oil circuit 12. Torque transmission adjustment device 13. Right control oil circuit 14. Torque transmission adjustment device driven plate output shaft 15. Output drive gear 16. Connecting shaft 17. Gearbox output shaft 18. Output driven gear 19. 4th gear driven gear 20. 3rd gear driven gear 21. 2nd gear driven gear 22. Gear 1st gear driven gear 23. Output shaft support bearing 24. Torque transmission device housing 25. Sealing ring 26. Driven disc 27. Driven disc annular plate 28. Driven disc sealing ring 29. Driving disc annular plate 30. Driving disc 31. Sealing ring 32. Bearing 34. Driving disc blade 36. Triangular tooth 37. Hydraulic oil 38. Final driving gear 39. Drive wheel 40. Drive shaft 41. Final driven gear 42. Engine 43. Double-acting clutch 44. Secondary clutch 45. Main clutch 46. Hydraulic pump 47. Three-position four-way solenoid directional valve. Detailed Implementation

[0031] This invention proposes a mechanical gearbox device for uninterrupted gear shifting. The invention will be further described in detail below with reference to the accompanying drawings through specific embodiments of uninterrupted gear shifting, but the scope of protection of this invention is not limited thereto.

[0032] Figure 1This is a structural diagram of a non-interruptible shift gearbox. The gearbox mainly consists of a drive shaft, shift gears, meshing sleeves, constant mesh gears, a torque transmission adjustment device, and a gearbox housing. Specifically, the internal drive shaft 1 passes through a hollow drive shaft 2 and is fixedly connected to the input shaft 10 of the torque transmission adjustment device 12; the internal drive shaft 1, hollow drive shaft 2, and input shaft 10 of the torque transmission adjustment device 12 are concentric; the torque transmission adjustment device 12 is fixed to the gearbox housing 3, and the driven plate output shaft 14 of the torque transmission adjustment device 12 is fixedly connected to one end of a connecting shaft 16, the other end of which is supported on the gearbox housing by a bearing; the output drive gear 15 is mounted on the connecting shaft 16 via a spline; one end of the hollow drive shaft 2 is supported on the gearbox housing by a bearing, and the other end is connected to a shaft... The transmission is supported on the housing inside the gearbox. The 1st gear double gear 4, 2nd gear double gear 6, 3rd gear double gear 7, and 4th gear double gear 9 are mounted on the hollow drive shaft 2 via sliding bearings. They can rotate relative to the hollow drive shaft 2 but do not transmit torque to it. The 1st-2nd gear shift sleeve 5 and the 3rd-4th gear shift sleeve 8 are mounted on the hollow drive shaft via splines. Under external force, they can move axially relative to the hollow drive shaft 2. When the power is cut off at the input end of the hollow drive shaft 2, they enable gear engagement and disengagement (downshifting), but they cannot rotate relative to the hollow drive shaft 2 or transmit torque to each other. The output shaft 17 of the gearbox is supported on the gearbox housing 3 by bearings at both ends. The driven gears 22 (1st gear), 21 (2nd gear), 20 (3rd gear), and 9 (4th gear) are splined onto the output shaft 17 and are in constant mesh with the double gears 4 (1st gear), 6 (2nd gear), 7 (3rd gear), and 9 (4th gear), respectively. The left control oil circuit 11 and the right control oil circuit 13 are used to control whether the torque transmission regulating device 12 is in torque transmission mode.

[0033] Figure 2 This is a structural diagram of the torque transmission adjustment device. The input shaft 10, the driving disc 30, and the driving disc annular plate 29 are an integral structure. The input shaft 10 is supported on the housing 24 by the bearing 32. The driven disc 26 and the driven disc annular plate 27 are an integral structure. The driven disc is connected to the driven disc output shaft 14 by a spline, and the driven disc 26 can move axially on the driven disc output shaft 14 under the action of external force. The sealing rings 25 and 31 are used to prevent oil leakage inside the housing 24. The driven disc sealing ring 28 is embedded in the housing 24, dividing the inside of the housing 24 into left and right cavities. The left control oil passage 11 and the right control oil passage 13 are used to input oil into the left and right cavities of the housing 24.

[0034] Figure 3 and Figure 4This is a schematic diagram of the active disk structure. The active disk 30 is a rotating disc. The input shaft 10 and the active disk annular plate 29 are integral structures with the active disk 30. A number of active disk blades 34 are evenly distributed and fixed on the outer surface of the active disk annular plate 29. The input shaft 10 and the active disk 30 are concentric.

[0035] Figure 5 and Figure 6 This is a schematic diagram of the driven disk structure. The driven disk 26 is a rotating body. The driven disk annular plate 27 is fixed on the driven disk 26, and a number of triangular teeth 36 are fixed on the inner surface of the driven disk annular plate 27.

[0036] Figure 7 This is a schematic diagram illustrating the working principle of the torque regulating device. First, the inside of the torque transmission device housing 24 is filled with oil. Since the driven disc seal ring 28 and the driven disc 26 divide the housing 24 into left and right chambers, when oil enters through the right control oil pipe 13 and exits through the left control oil circuit 11, the oil pushes the driven disc 26 to the left until the driven disc annular plate 27 and the driving disc annular plate 29 overlap. Figure 7 In this context, 'a' represents the overlap dimension. Due to the rotation of the input shaft 10, the driving disc annular plate 29 rotates. The blades 34 on the outer side of the driving disc annular plate 29 cause the oil to rotate and centrifugally. The rotating and centrifugal oil impacts the driven disc annular plate 27 and the triangular teeth 36 on its inner surface. Under the impact of the oil, the driven disc annular plate 27 and the driven disc 26 generate torque in the same direction as the driving disc 30, which is output by the driven disc output shaft 14. The larger the overlap dimension 'a' between the driven disc annular plate 27 and the driving disc annular plate 29, the greater the impact force of the oil on the triangular teeth 36 on the driven disc annular plate 27, and the greater the torque generated by the driven disc 26. When oil enters the left control oil circuit 11 and exits the right control oil circuit 13, the oil pushes the driven disc 26 to move to the right. When the overlap dimension 'a' between the driven disc annular plate 27 and the driving disc annular plate 29 is 0, the driven disc annular plate 27 does not generate torque, and the driven disc output shaft 14 does not output torque.

[0037] Figure 8 It is the principle of a transmission that shifts from 1st to 2nd gear without power interruption. Figure 1 As shown in the figure, both the built-in drive shaft 1 and the hollow drive shaft 2 receive power simultaneously. The 1-2 gear shift sleeve is engaged with the 1st gear double gear 4. The hollow drive shaft 2 transmits power to the 1st gear double gear 4 through the 1-2 gear shift sleeve. The 1st gear double gear 4 then transmits the input power from the hollow drive shaft 2 to the gearbox output shaft 17 through the 1st gear driven gear 22. At this time, the right control oil circuit 13 is closed, the left control oil circuit 11 is closed, and the driving disc annular plate 29 and the driven disc annular plate 27 do not overlap. Therefore, the driven disc output shaft 14 of the torque transmission adjustment device 12 does not output torque; the gearbox output shaft 17 only outputs power from the hollow drive shaft 2.

[0038] Figure 9 It is the principle of a transmission that shifts from 1st to 2nd gear without power interruption. Figure 2 As shown in the figure, the built-in drive shaft 1 and the hollow drive shaft 2 rotate and input power simultaneously. The 1-2 gear shift sleeve is engaged with the 1st gear double gear 4. The hollow drive shaft 2 transmits power to the 1st gear double gear 4 through the 1-2 gear shift sleeve. The 1st gear double gear 4 transmits the power of the hollow drive shaft 2 to the gearbox output shaft 17 through the 1st gear driven gear 22. At this time, oil enters the right control oil circuit 13 and exits the left control oil circuit 11. The driven plate 26 moves to the left, and the driving plate annular plate 29 and the driven plate annular plate 27 overlap. The power of the built-in drive shaft 1 is output by the driven plate output shaft 14 of the torque transmission adjustment device 12. The driven plate output shaft 14 transmits power to the gearbox output shaft 17 through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. At this time, the gearbox output shaft 17 transmits power to both the hollow drive shaft 2 and the built-in drive shaft 1.

[0039] Figure 10 It is the principle of a transmission that shifts from 1st to 2nd gear without power interruption. Figure 3 As shown in the figure, the built-in drive shaft 1 receives power, while the hollow drive shaft 2 receives no power. The 1-2 gear shift sleeve 5 is in the disengaged state, not engaging with either the 1st gear double gear 4 or the 2nd gear double gear 6. At this time, the driving disc annular plate 29 and the driven disc annular plate 27 of the torque transmission adjustment device 12 overlap, and the power from the built-in drive shaft 1 is transmitted to the torque by the driven disc output shaft 14 of the torque transmission adjustment device 12. The driven disc output shaft 14 transmits the power to the output shaft 17 of the gearbox through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. Therefore, the output shaft 17 of the gearbox only transmits the power from the built-in drive shaft 1.

[0040] Figure 11 Principle of a transmission that shifts gears without power interruption from 1st to 2nd gear Figure 4 As shown in the figure, the built-in drive shaft 1 rotates and receives power, while the hollow drive shaft 2 receives no power. The 1-2 gear shift sleeve 5 and the 2nd gear double gear 6 engage, and 2nd gear is engaged. At this time, the driving disc annular plate 29 and the driven disc annular plate 27 of the torque transmission adjustment device 12 overlap in position, and the power of the built-in drive shaft 1 is transmitted to the torque by the driven disc output shaft 14 of the torque transmission adjustment device 12. The driven disc output shaft 14 transmits the power to the output shaft 17 of the gearbox through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. At this time, since the hollow drive shaft 2 receives no power, the output shaft 17 of the gearbox only transmits the power of the built-in drive shaft 1.

[0041] Figure 12 Principle of a transmission that shifts gears without power interruption from 1st to 2nd gear Figure 5As shown in the figure, the built-in drive shaft 1 and the hollow drive shaft 2 rotate and receive power simultaneously; the 1-2 gear shift sleeve 5 and the 2nd gear double gear 6 are engaged; the hollow drive shaft 2 transmits power to the 2nd gear double gear 6 through the 1-2 gear shift sleeve, and the 2nd gear double gear 6, the 2nd gear driven gear 21, and the gearbox output shaft 17 output the input power of the hollow drive shaft 2 to the gearbox; at this time, oil enters the left control oil circuit 11 of the torque transmission adjustment device 12 and exits the right control oil circuit 13, and the driven plate 26 moves to the right until the driving plate annular plate 29 and the driven plate annular plate 27 no longer overlap, and the driven plate output shaft 14 of the torque transmission adjustment device 12 does not transmit torque; at this time, the gearbox output shaft 17 only transmits the power of the hollow drive shaft 2.

[0042] Based on the above Figure 8 to Figure 12 In the schematic diagram, when the gearbox shifts from 1st to 2nd gear, the gearbox output shaft 17 remains in a power output state, achieving a shift process with no interruption of power output. Similarly, it can be seen that the gearbox can achieve a shift process with no interruption of power output when shifting from 2nd to 1st gear or from 3rd to 4th gear.

[0043] Figure 13 to Figure 17 This is a diagram illustrating a specific application case.

[0044] Figure 13 This is an example of an application of a transmission with no power interruption during gear shifting. Figure 1 When in first gear, the torque adjustment device does not transmit torque. For example... Figure 11 As shown, the main clutch 45 is connected to the hollow drive shaft 2, the secondary clutch 44 is connected to the built-in drive shaft 1, and the double-acting clutch 43 is connected to the diesel engine 42; the output shaft 17 of the gearbox is connected to the final drive gear 38, the final drive gear 38 and the final driven gear 41 mesh and drive each other, the final driven gear 41 is fixedly connected to the drive shaft 40, and the end of the drive shaft 41 is fixedly connected to the drive wheel 39. The main clutch 45 and the secondary clutch 44 are engaged simultaneously, and the double-acting clutch 43, the built-in drive shaft 1, and the hollow drive shaft 2 rotate and input power simultaneously. The 1-2 gear shift sleeve is engaged with the 1st gear double gear 4. The hollow drive shaft 2 transmits power to the 1st gear double gear 4 through the 1-2 gear shift sleeve. The 1st gear double gear 4 transmits the power of the hollow drive shaft 2 to the gearbox output shaft 17 through the 1st gear driven gear 22. The three-position four-way valves 47DT1 and DT2 are not energized, the right control oil circuit 13 and the left control oil circuit 11 are closed, and the driving disc annular plate 29 and the driven disc annular plate 27 of the torque transmission adjustment device 12 do not overlap. The torque of the built-in drive shaft 1 cannot be output through the driven disc output shaft 14 of the torque transmission adjustment device 12. The gearbox output shaft 17 only outputs the power of the hollow drive shaft 2. The power from the output shaft 17 drives the drive wheel 39 through the final driving gear 38, the final driven gear 41, and the drive shaft 40.

[0045] Figure 14 This is an application case of a transmission with no power interruption during gear shifting, illustrating the gear shifting principle. Figure 2 In gear 1, the torque is transmitted via the torque adjustment device. For example... Figure 12 As shown, the main clutch 45 and the secondary clutch 44 are engaged simultaneously, and the built-in drive shaft 1 and the hollow drive shaft 2 rotate and input power simultaneously. The 1-2 gear shift sleeve is engaged with the 1st gear double gear 4. The hollow drive shaft 2 transmits power to the 1st gear double gear 4 through the 1-2 gear shift sleeve 5. The 1st gear double gear 4 transmits the power of the hollow drive shaft 2 to the gearbox output shaft 17 through the 1st gear driven gear 22. At this time, the three-position four-way valve 47DT1 is energized, oil enters the right control oil circuit 13, and oil exits the left control oil circuit 11. The driven plate 26 moves to the left, and the driving plate annular plate 29 and the driven plate annular plate 27 of the torque transmission adjustment device 12 overlap. The power of the built-in drive shaft 1 is transmitted to the torque by the driven plate output shaft 14 of the torque transmission adjustment device 12. The driven plate output shaft 14 transmits power to the gearbox output shaft 17 through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. At this time, the output shaft 17 of the gearbox transmits power to both the hollow drive shaft 2 and the built-in drive shaft 1. The power is transmitted from the output shaft 17 to the drive wheel 39 via the final drive gear 38, the final driven gear 41, and the drive shaft 40.

[0046] Figure 15 This is an application case of a transmission with no power interruption during gear shifting, illustrating the gear shifting principle. Figure 3 When shifting to first gear, the torque adjustment device transmits torque. For example... Figure 13 As shown, the secondary clutch 44 is engaged, the primary clutch 45 is disengaged, the built-in drive shaft 1 rotates and receives power, while the hollow drive shaft 2 receives no power. The 1-2 gear shift sleeve disengages from the 1st gear double gear 4. At this time, due to the overlapping positions of the driving disc annular plate 29 and the driven disc annular plate 27 of the torque transmission adjustment device 12, the power of the built-in drive shaft 1 is transmitted to the torque by the driven disc output shaft 14 of the torque transmission adjustment device 12. The driven disc output shaft 14 transmits power to the output shaft 17 of the gearbox through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. At this time, the output shaft 17 of the gearbox only transmits the power of the built-in drive shaft 1, and the power from the output shaft 17 drives the drive wheel 39 through the final driving gear 38, the final driven gear 41, and the drive shaft 40.

[0047] Figure 16 This is an application case of a transmission with no power interruption during gear shifting, illustrating the gear shifting principle. Figure 4 2nd gear engagement, torque adjustment device transmits torque. For example... Figure 14As shown, the secondary clutch 44 is engaged, the primary clutch 45 is disengaged, the built-in drive shaft 1 rotates and receives power, while the hollow drive shaft 2 receives no power. The 1-2 gear shift sleeve 5 and the 2nd gear double gear 6 engage, performing the 2nd gear engagement action. At this time, the driving disc annular plate 29 and the driven disc annular plate 27 of the torque transmission regulating device 12 overlap, and the power of the built-in drive shaft 1 is transmitted to the torque by the driven disc output shaft 14 of the torque transmission regulating device 12. The driven disc output shaft 14 transmits power to the output shaft 17 of the gearbox through the connecting shaft 16, the output driving gear 15, and the output driven gear 18. At this time, the output shaft 17 of the gearbox only transmits the power of the built-in drive shaft 1, and the power from the output shaft 17 drives the drive wheel 39 through the final driving gear 38, the final driven gear 41, and the drive shaft 40.

[0048] Figure 17 This is an application case of a transmission with no power interruption during gear shifting, illustrating the gear shifting principle. Figure 5 In gear 2, the torque adjustment device does not transmit torque. For example... Figure 17 As shown, the main clutch 45 and the secondary clutch 44 are engaged simultaneously, and the built-in drive shaft 1 and the hollow drive shaft 2 rotate and input power simultaneously. The 1-2 gear shift sleeve 5 and the 2nd gear double gear 6 are engaged. The hollow drive shaft 2 transmits power to the 2nd gear double gear 6 through the 1-2 gear shift sleeve, and the 2nd gear double gear 6 transmits power to the gearbox output shaft 17 through the 2nd gear driven gear 21. At this time, the three-position four-way valve 47DT2 is energized, oil enters the left control oil circuit 11 of the torque transmission regulating device 12, and oil exits the right control oil circuit 13. The driven plate 26 moves to the right until the driving plate annular plate 29 and the driven plate annular plate 27 no longer overlap. The driven plate output shaft 14 of the torque transmission regulating device 12 does not transmit torque. At this time, the gearbox output shaft 17 only transmits power from the hollow drive shaft 2. The power from the output shaft 17 drives the drive wheel 39 through the final driving gear 38, the final driven gear 41, and the drive shaft 40.

Claims

1. A mechanical gearbox device for uninterrupted gear shifting, characterized in that, The transmission includes a built-in drive shaft (1), a hollow drive shaft (2), a gearbox housing (3), a double gear set, a shift engagement sleeve, a torque transmission adjustment device (12), and a torque transmission adjustment device input shaft (10) and a torque transmission adjustment device driven plate output shaft (14), an output drive gear (15), a connecting shaft (16), a gearbox output shaft (17), an output driven gear (18), and a driven gear set located on the torque transmission adjustment device (12). The double gear set is mounted on the hollow drive shaft (2) via sliding bearings and is normally meshed with the driven gear set. The driven gear set is connected to the gearbox output shaft (17) via splines. The shift engagement sleeve is mounted on the hollow drive shaft (2) via splines. The gear shifting sleeve can move axially along the hollow drive shaft on the shaft (2); the built-in drive shaft (1) passes through the inner hole of the hollow drive shaft (2) and does not contact the hollow drive shaft; the built-in drive shaft (1) is fixedly connected to the input shaft (10) of the torque transmission adjustment device; the torque transmission adjustment device (12) is fixedly installed on the inner housing of the gearbox; one end of the connecting shaft (16) is fixedly connected to the driven plate output shaft (14) of the torque transmission adjustment device, and the other end is installed on the gearbox housing through a bearing; the output drive gear (15) is connected to the connecting shaft (16) through a spline and meshes with the output driven gear (18); the output driven gear (18) is connected to the gearbox output shaft (17) through a spline.

2. The mechanical gearbox device for uninterrupted gear shifting according to claim 1, characterized in that, The double gear set includes a 1st gear double gear (4), a 2nd gear double gear (6), a 3rd gear double gear (7), and a 4th gear double gear (9); the gear shifting engagement sleeve includes a 1st-2nd gear shifting engagement sleeve (5) and a 3rd-4th gear shifting engagement sleeve (8); the driven gear set includes a 4th gear driven gear (19), a 3rd gear driven gear (20), a 2nd gear driven gear (21), and a 1st gear driven gear (22); the 1st gear double gear (4), 2nd gear double gear (6), 3rd gear double gear (7), and 4th gear double gear (9) They are respectively in constant mesh with the 1st gear driven gear (22), the 2nd gear driven gear (21), the 3rd gear driven gear (20), and the 4th gear driven gear (19).

3. The mechanical gearbox device for uninterrupted gear shifting according to claim 2, characterized in that, The torque transmission adjustment device (12) includes an active disk (30) and a driven disk (26). The active disk (30) is provided with an active disk annular blades (29). The center of each active disk annular blade is concentric with the input shaft (10). A number of active disk blades (34) are fixed on the outer surface of the active disk annular blades (29). The driven disk (26) is connected to the output shaft (14) of the torque transmission adjustment device via a spline. The driven disk (26) has a degree of freedom of movement relative to the output shaft (14) of the torque transmission adjustment device along the spline direction. The driven disk (26) is provided with a driven disk annular blade (27). A number of triangular teeth (36) are fixed on the inner side of the driven disk annular blade (27). The center of each driven disk annular blade (27) is concentric with the spline on the driven disk (26).

4. A mechanical gearbox device for uninterrupted gear shifting according to claim 3, characterized in that, The torque transmission regulating device (12) includes a torque transmission device housing (24), a left control oil circuit (11), and a right control oil circuit (13). The torque transmission device housing (24) is filled with oil. The driven plate (26) divides the torque transmission device housing (24) into left and right chambers. The left control oil circuit (11) and the right control oil circuit (13) are respectively connected to the left and right chambers.

5. A mechanical gearbox device for uninterrupted gear shifting according to claim 4, characterized in that, A driven disc sealing ring (28) is provided between the driven disc (26) and the torque transmission device housing (24).

6. A torque transmission adjustment device (12), characterized in that, The device includes a drive disc (30), a driven disc (26), a torque transmission device housing (24), a left control oil circuit (11), and a right control oil circuit (13). The drive disc (30) is provided with a drive disc annular blade (29), the center of each drive disc annular blade is concentric with the input shaft (10), and a number of drive disc blades (34) are fixed on the outer surface of the drive disc annular blade (29). The driven disc (26) is connected to the output shaft (14) of the torque transmission adjustment device via a spline. The driven disc (26) is positioned relative to the output shaft of the torque transmission adjustment device. The output shaft (14) has a degree of freedom of movement along the spline direction; the driven disk (26) is provided with a driven disk annular plate (27), and a number of triangular teeth (36) are fixed on the inner side of the driven disk annular plate (27). The center position of each driven disk annular plate (27) is concentric with the spline installed on the driven disk (26). The torque transmission device housing (24) is filled with oil. The driven disk (26) divides the torque transmission device housing (24) into left and right cavities. The left control oil circuit (11) and the right control oil circuit (13) are respectively connected to the left and right cavities.

7. The method for adjusting torque transmission using the torque transmission adjusting device (12) according to claim 6, characterized in that, The process includes the following steps: When the positions of the driving disc annular blades and the driven disc annular blades overlap, the input shaft of the driving disc receives power input. The driving disc annular blades rotate under the drive shaft. The blades on the outer side of the annular blades push the oil in the inner cavity of the housing to perform a combined rotational and centrifugal motion. The oil performing the rotational and centrifugal motion impacts the driven disc annular blades and the inner triangular teeth, generating a force on the driven disc annular blades, thereby outputting torque on the driven disc output shaft. The magnitude of the force exerted by the driven disc annular blades is proportional to the overlapping area of ​​the driving disc annular blades and the driven disc annular blades. By changing the overlapping area of ​​the driving disc annular blades and the driven disc annular blades, the force exerted by the oil on the annular blades is changed, thereby changing the output torque of the driven disc output shaft.

8. A method for performing uninterrupted gear shifting using a mechanical gearbox device for uninterrupted gear shifting as described in claim 4, characterized in that, When shifting gears is required, oil is first introduced into the right control oil pipe of the torque adjustment device, pushing the driven plate to move to the left, causing the annular plates on the driven plate to overlap with those on the driving plate. Since the built-in drive shaft drives the driving plate to rotate, the driving plate transmits power to the driven plate through the oil in the torque transmission device. The driven plate then transmits the power to the transmission output shaft through the driven plate output shaft, connecting shaft, output driving gear, and output driven gear. Next, the power to the hollow transmission shaft is cut off, and the gear is engaged or disengaged. During this process, the built-in drive shaft drives the transmission output shaft independently through the torque adjustment device, connecting shaft, and torque output gear. Next, after the gear shift is complete, the power is connected to the hollow drive shaft of the transmission, and the power of the hollow drive shaft drives the output shaft of the transmission through the gear shift gears. Finally, oil enters the left control oil pipe of the torque adjustment device, pushing the driven plate to move to the right, so that the annular plates on the driven plate and the annular plates on the driving plate do not overlap. The torque transmission device cannot transmit the torque of the built-in hollow drive shaft. At this time, the output shaft of the transmission is powered solely by the gear shift gears, and the shifting process ends without power interruption.

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