CN-117345842-B - Mechanical gearbox device that no power interruption was shifted

CN117345842BCN 117345842 BCN117345842 BCN 117345842BCN-117345842-B

Abstract

The invention discloses a mechanical gearbox device with no power interruption gear shifting, which comprises a built-in transmission shaft, a hollow transmission shaft, a gearbox shell, a 1-2 gear shifting meshing sleeve, a1 gear duplex gear, a2 gear duplex gear, a 3-4 gear shifting meshing sleeve, a3 gear duplex gear, a4 gear duplex gear, a torque transmission regulating device input shaft, a left control oil way, a torque transmission regulating device, a right control oil way, a torque regulating device output shaft, a torque transmission driving gear, a torque transmission device connecting shaft, a gearbox output shaft, a torque transmission device driven gear, a1 gear driven gear, a2 gear driven gear, a3 gear driven gear and a4 gear driven gear. When shifting gears, the power of the hollow transmission shaft is cut off through the main clutch of the vehicle, the gear is conveniently connected, the power is continuously supplied to the output shaft of the gearbox through the built-in transmission shaft and the torque adjusting device, the power output of the gearbox during mechanical gear shifting is maintained, and the mechanical gearbox is shifted without power interruption.

Inventors

HAN JIANGYI
LI HANG
XIA CHANGGAO
TANG HAO
YAN XINGXIANG
WANG FAN
LIU HENGYUAN

Assignees

江苏大学

Dates

Publication Date: 20260512
Application Date: 20230331

Claims (8)

1. A mechanical gearbox device without power interruption gear shifting is characterized by comprising a built-in transmission shaft (1), a hollow transmission shaft (2), a gearbox housing (3), a duplex gear set, a gear shifting meshing sleeve, a torque transmission adjusting device (12), a torque transmission adjusting device input shaft (10) and a torque transmission adjusting device driven disc output shaft (14) which are arranged on the torque transmission adjusting device (12), an output driving gear (15), a connecting shaft (16), a gearbox output shaft (17), an output driven gear (18) and a driven gear set, wherein the duplex gear set is arranged on the hollow transmission shaft (2) through a sliding bearing and is correspondingly and respectively meshed with the driven gear set, the driven gear set is connected with the gearbox output shaft (17) through a spline, the gear shifting meshing sleeve is arranged on the hollow transmission shaft (2) through the spline and can axially move along the hollow transmission shaft, the built-in transmission shaft (1) penetrates through an inner hole of the hollow transmission shaft (2) and is not contacted with the hollow transmission shaft, the built-in transmission shaft (1) is fixedly connected with the torque transmission adjusting device input shaft (10), the torque transmission adjusting device input shaft (12) is fixedly arranged on the gearbox housing (16) and is fixedly connected with one end of the driven disc output shaft (14), the other end of the transmission is arranged on the transmission shell through a bearing, an output driving gear (15) is connected with a connecting shaft (16) through a spline and meshed with an output driven gear (18), and the output driven gear (18) is connected with a transmission output shaft (17) through a spline.
2. The mechanical gearbox device without power interruption shifting according to claim 1, wherein the duplex gear set comprises a 1-gear duplex gear (4), a 2-gear duplex gear (6), a 3-gear duplex gear (7) and a 4-gear duplex gear (9), the gear shifting engagement sleeve comprises a 1-2 gear shifting engagement sleeve (5) and a 3-4 gear shifting engagement sleeve (8), the driven gear set comprises a 4-gear driven gear (19), a 3-gear driven gear (20), a 2-gear driven gear (21) and a 1-gear driven gear (22), and the 1-gear duplex gear (4), the 2-gear duplex gear (6), the 3-gear duplex gear (7) and the 4-gear duplex gear (9) Is respectively meshed with a 1-gear driven gear (22), a 2-gear driven gear (21), a 3-gear driven gear (20) and a 4-gear driven gear (19) in a normal way.
3. The mechanical gearbox device without power interruption gear shifting according to claim 2, wherein the torque transmission adjusting device (12) comprises a driving disc (30), a driven disc (26), driving disc annular pieces (29) are arranged on the driving disc (30), the circle center positions of all driving disc annular pieces are concentric with the input shaft (10), a plurality of driving disc blades (34) are fixed on the outer surface of each driving disc annular piece (29), the driven disc (26) is connected with a driven disc output shaft (14) of the torque transmission adjusting device through splines, the driven disc (26) has a moving freedom degree along the spline direction relative to the driven disc output shaft (14) of the torque transmission adjusting device, driven disc annular pieces (27) are arranged on the driven disc (26), a plurality of triangular teeth (36) are fixed on the inner side of each driven disc annular piece (27), and the circle center positions of all driven disc annular pieces (27) are concentric with the driven disc (26) through splines.
4. A mechanical transmission device with no power interruption shift according to claim 3, wherein the torque transmission adjusting device (12) comprises a torque transmission device housing (24), a left control oil path (11) and a right control oil path (13), the torque transmission device housing (24) is filled with oil, the driven disc (26) divides the torque transmission device housing (24) into a left cavity and a right cavity, and the left control oil path (11) and the right control oil path (13) are respectively communicated with the left cavity and the right cavity.
5. A mechanical gearbox arrangement without power interruption shifting according to claim 4, characterised in that a driven disc sealing ring (28) is arranged between the driven disc (26) and the torque transmission device housing (24).
6. The torque transmission adjusting device (12) is characterized by comprising a driving disc (30), a driven disc (26), a torque transmission device shell (24), a left control oil way (11) and a right control oil way (13), wherein driving disc annular sheets (29) are arranged on the driving disc (30), the circle center positions of all driving disc annular sheets are concentric with an input shaft (10), a plurality of driving disc blades (34) are fixed on the outer surface of each driving disc annular sheet (29), the driven disc (26) is connected with a driven disc output shaft (14) of the torque transmission adjusting device through a spline, the driven disc (26) has a moving degree of freedom along the spline direction relative to the driven disc output shaft (14) of the torque transmission adjusting device, driven disc annular sheets (27) are arranged on the driven disc (26), a plurality of triangular teeth (36) are fixed on the inner side of each driven disc annular sheet (27), the circle center positions of all driven disc annular sheets (27) are concentric with the installation spline of the driven disc (26), the torque transmission device shell (24) is filled with oil, the driven disc (26) divides the torque transmission device shell (24) into a left cavity and a right cavity and a left control oil way (11) and a right control oil way (13) are communicated with the left cavity and the right cavity respectively.
7. The method for torque transmission adjustment by torque transmission adjustment device (12) according to claim 6, comprising the steps of when the positions of the driving disc annular blade and the driven disc annular blade are overlapped, the driving disc annular blade is driven by the driving shaft to rotate by power input of the driving disc annular blade, the blades outside the annular blade push oil in the inner cavity of the shell to do composite motion in rotation and centrifugation directions, the oil in rotation and centrifugation motion impacts the driven disc annular blade and the inner triangular teeth to generate acting force on the driven disc annular blade, so that torque is output by the driven disc output shaft, the acting force of the driven disc annular blade is proportional to the overlapping area of the driving disc annular blade and the driven disc annular blade, and the acting force of the oil on the annular blade is changed by changing the overlapping area of the driving disc annular blade and the driven disc annular blade, so that the output torque of the driven disc output shaft is changed.
8. A method for performing power-free interruption shift by a mechanical gearbox device without power interruption shift according to claim 4 is characterized in that when the gear is required to be shifted, a right control oil pipe of a torque adjusting device is used for feeding oil to push a driven disc to move leftwards, so that an annular piece of the driven disc and an annular piece on a driving disc are overlapped, the driving disc is driven to rotate by a built-in transmission shaft, the driving disc transmits power to the driven disc through oil in a torque transmission device, the driven disc transmits the power to a gearbox output shaft through an output shaft of the driven disc, a connecting shaft, an output driving gear and an output driven gear, then, the power of a hollow transmission shaft of the gearbox is cut off, gear shifting is performed, the transmission output shaft is independently driven by the built-in transmission shaft through the torque adjusting device and the connecting shaft, and once again, after gear shifting is finished, the power of the hollow transmission shaft is connected with the gearbox, the annular piece of the hollow transmission shaft is driven by the gear, finally, the left control oil pipe of the torque adjusting device is pushed to move rightwards, so that the annular piece of the driven disc and the annular piece of the driving disc and the driving disc is not overlapped, the torque transmission shaft is not present, the torque transmission of the hollow transmission shaft is transmitted, and the power transmission of the power cannot be stopped by the gear shifting step, and the power transmission is stopped.

Description

Mechanical gearbox device that no power interruption was shifted Technical Field The invention belongs to the field of power transmission of vehicles and tractors, and particularly relates to a mechanical gearbox device without power interruption gear shifting and a gear shifting method. Background In the field of vehicle drive wheel transmission systems, particularly off-highway vehicles, continuous drive force is required for the drive wheels during traction operations or continuous uphill driving conditions. However, under such conditions, the driving load is constantly changing, and the vehicle is required to perform gear adjustment according to the change of the driving load, for example, when the driving load is increased to the maximum output torque of the engine, the transmission system is required to be shifted down and increased in torque to improve the capability of overcoming the load, and when the driving load is reduced, the transmission system is required to be shifted up and increased in speed to improve the working efficiency. However, the current gear shifting method of the mechanical gearbox for the vehicle is generally sliding gear shifting, meshing sleeve shifting and synchronizer shifting. The three gear shifting modes all need clutch cooperation at the input shaft end of the gearbox, and when gear shifting is needed, the clutches are needed to be separated, power is cut off, and gear shifting of the gearbox is carried out. During this transmission input shaft power cut-off, the driving force of the vehicle driving wheels drops rapidly, if the vehicle is running traction, it comes to a stop rapidly, the transmission is shifted, the vehicle is restarted, which affects the traction quality, if the vehicle is running uphill at low speed, it is necessary to shift gears due to the load increase, and during the transmission input power cut-off, the vehicle may stop or reverse, increasing the vehicle unsafe risk. Therefore, in these operating conditions, there is a need for a gearbox that is capable of performing powerless interrupt shifting such that the output power of the gearbox is not interrupted during a shift while the vehicle is in traction or low speed hill climbing operation, and is capable of providing continuous driving force to the driving wheels of the vehicle. Disclosure of Invention The invention aims to provide a mechanical gearbox device for a vehicle without power interruption gear shifting, so that power can be continuously provided for driving wheels when a vehicle transmission system shifts gears, the traction operation capacity of the vehicle is improved, and the running safety of a low-speed climbing slope is improved. The mechanical gearbox device capable of achieving power interruption-free gear shifting comprises a built-in transmission shaft, a hollow transmission shaft, a gearbox shell, a duplex gear set, a gear shifting meshing sleeve, a torque transmission adjusting device input shaft, a torque transmission adjusting device driven disc output shaft, an output driving gear, a connecting shaft, a gearbox output shaft, an output driven gear and a driven gear set, wherein the torque transmission adjusting device input shaft and the torque transmission adjusting device driven disc output shaft are arranged on the torque transmission adjusting device, the duplex gear set is arranged on the hollow transmission shaft through a sliding bearing and is correspondingly and respectively meshed with the driven gear set, the driven gear set is connected with the gearbox output shaft through a spline, the gear shifting meshing sleeve is arranged on the hollow transmission shaft through a spline and can axially move along the hollow transmission shaft, the built-in transmission shaft penetrates through an inner hole of the hollow transmission shaft and is not in contact with the hollow transmission shaft, one end of the torque transmission adjusting device is fixedly connected with the input shaft of the torque transmission adjusting device, the other end of the connecting shaft is fixedly connected with the driven disc output shaft of the torque transmission adjusting device through a bearing, the output gear is connected with the driving gear and is connected with the driven gear through the spline, and the output shaft is meshed with the driven gear through the spline. In the scheme, the duplex gear set comprises a gear duplex gear, a 2-gear duplex gear, a 3-gear duplex gear and a 4-gear duplex gear, the gear shifting meshing sleeve comprises a 1-2 gear shifting meshing sleeve and a 3-4 gear shifting meshing sleeve, the driven gear set comprises a 4-gear driven gear, a 3-gear driven gear, a 2-gear driven gear and a 1-gear driven gear, and the 1-gear duplex gear, the 2-gear duplex gear, the 3-gear duplex gear and the 4-gear duplex gear are respectively and correspondingly meshed with the 1-gear driven gear, the 2-gear driven gear, the 3-gear driven gear and the 4-gear driven g