Electronic control gear shifting gearbox, speed change system and method

Abstract

The invention relates to the technical field of gearboxes, in particular to an electric control gear shifting gearbox, a speed change system and a speed change method. The transmission mechanism comprises a gearbox, and a transmission mechanism, an electric push rod mechanism and a control mechanism which are matched with the gearbox, wherein the transmission mechanism comprises a first shaft assembly and a second shaft assembly; the electric push rod mechanism comprises an electric push rod I used for controlling the first gear to be engaged and disengaged and an electric push rod II used for controlling the second gear to be engaged and disengaged and the third gear to be disengaged and disengaged. The control mechanism comprises a controller, and the controller is used for selecting gear shifting control strategies, namely gear shifting time, gear shifting speed, gear shifting in-place and gear taking-off in-place. Through cooperative work of the electric push rod mechanism and the control mechanism, meshing and separation of gears of different gears in the transmission mechanism are achieved, and therefore the gear shifting accuracy is greatly improved; by improving and introducing the fork shaft and the shifting fork, the power transmission path of the gear shifting mechanism is optimized, and gear shifting operation is smoother and more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to an electronically controlled shifting gearbox, a speed changing system and a method. Background Art

[0002] For a long time, the speed shifting of harvesting machinery has always relied on the manual operation of the driver. This process is cumbersome and prone to errors, which poses a considerable challenge to the work efficiency. As users, especially young operators, have increasingly higher requirements for comfort, the demand for shifting performance has also increased. Therefore, the electronically controlled hydraulic gear shifting gearbox came into being, which realizes one-button shifting through a rocker switch and simplifies the operation process. To solve the above problems, Chinese patent CN118224292A proposes a static shifting control method, device and medium for an AMT gearbox. Although this method realizes the gear shifting operation of the target gear through the gearbox control unit and drives the clutch to slowly close to the preset slip point position, there are still problems: the coordination between the electric push rod and the control mechanism is not tight enough, resulting in limited shifting accuracy; the design of the fork shaft and the shift fork is not optimized, making the shifting process not smooth and stable, and even generating vibration and noise. In addition, the shifting operation is complicated and lacks a real-time monitoring mechanism, which easily leads to safety hazards, such as vehicle loss of control or flameout, thereby increasing the complexity and danger of driving. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an electronically controlled shifting transmission, a speed changing system and a method.

[0004] The technical solution adopted by the present invention is as follows: An electronically controlled shifting gearbox comprises a gearbox, and a transmission mechanism, an electric push rod mechanism and a control mechanism matched with the gearbox, wherein: The transmission mechanism includes a first shaft assembly and a second shaft assembly, wherein; A shaft assembly, including a second-speed driving gear and a third-speed driving gear; The second shaft assembly includes a first gear driven gear, a second gear driven gear, a third gear driven gear, and matching gear sleeves and gear seats; The electric push rod mechanism comprises an electric push rod I for controlling the engagement and disengagement of the first gear, and an electric push rod II for controlling the engagement and disengagement of the second and third gears; The control mechanism includes a controller, and the controller is used to select a gear shift control strategy, namely, a gear shift time, a gear shift speed, a gear shift position, and a gear disengagement position.

[0005] This technical solution realizes the meshing and disengagement of gears of different gears in the transmission mechanism through the coordinated work of the electric push rod mechanism and the control mechanism, thereby completing the gear shifting operation. Specifically, the transmission mechanism consists of a one-shaft assembly and a two-shaft assembly; the one-shaft assembly includes a second-gear driving gear and a third-gear driving gear, and the driving gear is connected to the power output of the engine and transmits power through rotation; the two-shaft assembly includes a first-gear passive gear, a second-gear passive gear and a third-gear passive gear, as well as matching gear sleeves and gear seats; the gear sleeve slides on the gear seat, and is pushed by the electric push rod mechanism to mesh or disengage with different passive gears, thereby achieving different gears; the electric push rod I is specifically used to control the engagement and disengagement of the first gear. When the driver selects the first gear, the electric push rod I is used to control the engagement and disengagement of the first gear. Push rod I pushes the gear sleeve to engage with the first gear driven gear; when the next gear needs to be disengaged, electric push rod I pushes the gear sleeve in the opposite direction to separate it from the first gear driven gear; electric push rod II is used to control the engagement and disengagement of the second and third gears. Since the driving gears and driven gears of the second and third gears are both located on the first and second shaft assemblies, electric push rod II requires more complex movements to ensure that the gear sleeve can accurately engage or disengage with the second or third gear driven gear; the control mechanism is used to receive the driver's gear shifting information and select an appropriate gear shifting control strategy according to the vehicle's operating status.

[0006] In addition, the electronically controlled shifting gearbox, the speed change system and the method according to the present invention also have the following additional technical features: According to one embodiment of the present invention, the transmission mechanism further includes a fork shaft and a shift fork, and the electric push rod mechanism directly applies power to the fork shaft, and the fork shaft drives the shift fork and the gear sleeve to move to complete the gear shifting or disengaging.

[0007] This technical solution introduces a fork shaft and a shift fork, so that the electric push rod mechanism can directly apply power to the fork shaft, thereby driving the shift fork and the gear sleeve to move, thereby completing the operation of shifting or disengaging gears.

[0008] According to an embodiment of the present invention, the control mechanism further includes an electric control button. The control mechanism transmits a signal to the electric push rod mechanism according to information from the electric control button, and the electric push rod mechanism drives the transmission mechanism to work.

[0009] This technical solution adds an electric control button so that the control mechanism can transmit the corresponding signal to the electric push rod mechanism according to the information of the electric control button, thereby driving the transmission mechanism to work and realizing the gear shifting function.

[0010] According to one embodiment of the present invention, the electric push rod I and the electric push rod II of the electric push rod mechanism both adopt an electric push rod assembly with a DC24V voltage, a thrust of 500N, a self-locking force of 250N, and a moving speed of 20mm / s.

[0011] This technical solution ensures that the electric push rod mechanism has sufficient driving force and stability to meet the gear shifting requirements by specifying that the electric push rod I and the electric push rod II adopt electric push rod assemblies of specific specifications.

[0012] According to one embodiment of the present invention, the gear sleeve includes a first gear engagement sleeve and a second / third gear engagement sleeve; the first gear engagement sleeve moves to the left to engage the first gear and moves to the right to disengage the first gear; the second / third gear engagement sleeve moves to the left to engage the third gear and moves to the right to disengage the third gear; then moves to the right to engage the second gear and moves to the left to disengage the second gear.

[0013] This technical solution improves the movement mode of the gear sleeve and the gear position correspondence, so that the first gear engagement sleeve and the second and third gear engagement sleeves can realize gear engagement and gear disengagement operations according to different moving directions, thereby clearly defining the function and working principle of the gear sleeve.

[0014] According to one embodiment of the present invention, the fork shaft includes a first gear fork shaft and a second and third gear fork shaft; the piston end of the electric push rod I cooperates with the corresponding first gear fork shaft to complete the first gear shifting and shifting; the piston end of the electric push rod II cooperates with the corresponding second and third gear fork shaft to complete the second and third gear shifting and shifting.

[0015] This technical solution defines that the fork shaft includes a first gear fork shaft and a second and third gear fork shaft, and cooperates with the piston ends of the electric push rod I and the electric push rod II respectively to realize the first gear and second and third gear shifting and disengaging operations, and further clarifies the coordination relationship between the fork shaft and the electric push rod mechanism.

[0016] According to one embodiment of the present invention, the electric push rod I and the electric push rod II are fixed side by side to the side of the gearbox by connecting bolts, and the electric push rod I and the electric push rod II are connected to the interface of the controller by connecting wires.

[0017] This technical solution ensures that the electric push rod mechanism can be stably installed on the gearbox and effectively receive the instructions of the controller to work by describing the fixing method of the electric push rod I and the electric push rod II and the connection method with the controller.

[0018] To achieve the above object, the present invention also provides an electronically controlled gear shifting system.

[0019] An electronically controlled gear shifting system, the system also includes a differential assembly, a left half shaft, and a right half shaft, wherein: The differential assembly is located at the rear of the electronically controlled shift transmission. The differential assembly is connected to the output shaft of the electronically controlled shift transmission and receives power from the transmission. The differential assembly is connected to the vehicle's drive wheels through the left and right half shafts to distribute power to the drive wheels.

[0020] This technical solution achieves gear adjustment through an electronically controlled shifting gearbox, and then reasonably distributes power to the left and right drive wheels through the differential assembly, and then stably transmits power to the drive wheels through the left and right half shafts, thereby ensuring that the vehicle can obtain the best power performance and handling performance under various road conditions. Specifically, first, the electronically controlled shifting gearbox adjusts the gear position through electronic control to optimize the power output; the transmission mechanism, electric push rod mechanism and control mechanism inside the gearbox work together; power is transmitted from the output shaft of the gearbox to the differential assembly; the differential assembly is located at the rear of the gearbox and has the important task of distributing power to the left and right drive wheels; power is transmitted to the left and right drive wheels of the vehicle through the left and right half shafts respectively; when the vehicle turns, the left and right drive wheels can rotate at different speeds, thereby maintaining the stability and handling of the vehicle.

[0021] To achieve the above object, the present invention also provides an electronically controlled gear shifting method.

[0022] An electronically controlled gear shifting method comprises the following steps: S1. Neutral position judgment and information processing: S11, driver sends information: the driver sends information about shifting or disengaging gears through an electronic control button; S12, receiving and analyzing information: the control mechanism receives the information sent by the driver, analyzes the information content, and determines whether to perform a gear shifting operation or a gear shifting operation; S13, determining the current gear position: the control mechanism determines whether the current gear position is in a neutral position through a sensor or an internal state; S14. Select the operation path: If the current gear is in neutral, then select to enter step S2 to engage or disengage the gear; If the current gear is not in the neutral position, then select to enter step S3 to switch between gears; S2. The process of shifting in and out of gear in neutral position: S21, gear shifting operation: S211, sending gear shifting information: the control mechanism sends the gear shifting information to the corresponding electric push rod assembly; S212, electric push rod working: the electric push rod assembly starts working after receiving the information, and applies power to the fork shaft; S213, fork shaft and shift fork move: the fork shaft drives the shift fork to move, thereby driving the gear sleeve to mesh with the passive gear of the selected gear; S214, confirming that the gear is engaged successfully: the control mechanism detects the meshing state of the gear sleeve and the passive gear through a sensor to confirm whether the gear is engaged successfully; S215, updating the gear status: if the gear is engaged successfully, the control mechanism updates the internal gear status to the selected gear; S22, unblocking operation: S221, sending gear-shifting information: after the driver sends the gear-shifting information, the control mechanism sends the gear-shifting information to the corresponding electric push rod assembly; S222-S225, similar to steps S212-S215, but in the opposite direction, completing the gear shifting operation and updating the gear state to neutral; S3, gear switching process: S31, judging and processing the current gear position: S311, sending gear-shifting information: the control mechanism first determines the current gear position, and sends the gear-shifting information to the electric push rod assembly corresponding to the current gear position; S312-S314, similar to steps S212-S214, but the purpose is to disengage the gear sleeve from the passive gear of the current gear position; S315, confirming that the gear is disengaged successfully: the control mechanism confirms that the gear sleeve has completely disengaged from the passive gear of the current gear; S32, execute the gear shifting operation: S321, sending gear shifting information: while the gear shifting operation is in progress, the control mechanism sends the gear shifting information to the electric push rod assembly corresponding to the target gear position; S322-S325 are similar to steps S212-S215, but the goal is to make the gear sleeve mesh with the passive gear of the target gear and update the gear state to the target gear.

[0023] The technical solution is that the system can receive and analyze the information of shifting or disengaging gears through the driver's electronic control button input; then, the system determines whether the current gear is in the neutral position. This step is the key to ensuring the safety of the gear shifting operation; according to the judgment result, the system chooses to enter different operation paths: if the current gear is in the neutral position, the gear engagement or disengagement operation is directly performed; if it is not in the neutral gear, the disengagement operation is performed first, and then the gear engagement operation is performed to achieve the switching between gears; during the process of engaging and disengaging gears in the neutral position, the system sends information to the corresponding electric push rod assembly to make it work and drive the fork shaft and the shift fork to move, thereby realizing the gear sleeve and the passive gear of the selected gear. engagement or disengagement; after each operation, the system will detect and confirm whether the operation is successful through the sensor, and update the internal gear status accordingly; in the process of switching between gears, the system first determines the current gear, and sends the gear disengagement information to make the gear sleeve disengage from the passive gear of the current gear; at the same time or subsequently, the system sends the gear engagement information to the electric push rod assembly corresponding to the target gear, so that the gear sleeve engages with the passive gear of the target gear, and updates the gear status to the target gear; in the whole process, the system realizes the automation and intelligence of electronically controlled gear shifting through information processing, gear judgment and operation control, improves the accuracy of gear shifting, and ensures driving safety.

[0024] Compared with the prior art, the present invention has the following beneficial effects: (1) Through the coordinated work of the electric push rod mechanism and the control mechanism, the meshing and disengagement of gears in different gear positions in the transmission mechanism is achieved, thereby greatly improving the accuracy of gear shifting; by improving the introduction of the fork shaft and the shift fork, the power transmission path of the shift mechanism is optimized, making the gear shifting operation smoother and more stable; (2) By improving the control mechanism, the safety of the gear shifting process is ensured. The driver only needs to input the gear shifting information through the electronic control button, and the system can automatically determine the current gear position and perform the corresponding gear shifting operation. During the whole process, the system will monitor and confirm whether the operation is successful in real time, thereby effectively avoiding safety hazards caused by improper gear shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is one of the cross-sectional views of the electronically controlled gearbox.

[0026] Figure 2 This is the second cross-sectional view of the electronically controlled gearshift transmission.

[0027] Figure 3 It is the connection diagram between the electric push rod mechanism and the control mechanism.

[0028] In the figure: 1. gearbox; 2. transmission mechanism; 21. second gear driving gear; 22. third gear driving gear; 23. first gear passive gear; 24. second gear passive gear; 25. third gear passive gear; 26. gear sleeve; 27. gear seat; 28. first gear fork shaft; 29. ​​second and third gear fork shafts; 3. electric push rod mechanism; 31. electric push rod I; 32. electric push rod II; 4. control mechanism; 5. differential assembly; 6. left half shaft; 7. right half shaft. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1 like Figures 1 to 3 As shown, this embodiment provides an electronically controlled shifting gearbox, comprising a gearbox 1, and a transmission mechanism 2, an electric push rod mechanism 3 and a control mechanism 4 matched with the gearbox 1, wherein: The transmission mechanism 2 includes a first shaft assembly and a second shaft assembly, wherein; A shaft assembly, including a second gear driving gear 21 and a third gear driving gear 22; The second shaft assembly includes a first gear driven gear 23, a second gear driven gear 24, a third gear driven gear 25, and a matching gear sleeve 26 and a gear seat 27; The electric push rod mechanism 3 includes an electric push rod I 31 for controlling the first gear engagement and disengagement, and an electric push rod II 32 for controlling the second and third gear engagement and disengagement; The control mechanism 4 includes a controller, and the controller is used to select a gear shift control strategy, namely, a gear shift time, a gear shift speed, a gear shift position, and a gear shift position.

[0031] This technical solution realizes the engagement and disengagement of gears of different gears in the transmission mechanism 2 through the coordinated work of the electric push rod mechanism 3 and the control mechanism 4, thereby completing the gear shifting operation. Specifically, the transmission mechanism 2 is composed of a one-shaft assembly and a two-shaft assembly; the one-shaft assembly includes a second-gear driving gear 21 and a third-gear driving gear 22, and the driving gears are connected to the power output of the engine and transmit power through rotation; the two-shaft assembly includes a first-gear passive gear 23, a second-gear passive gear 24 and a third-gear passive gear 25, as well as matching gear sleeves 26 and gear seats 27; the gear sleeves 26 slide on the gear seats 27, and through the push of the electric push rod mechanism 3, they engage or disengage with different passive gears, thereby realizing different gears; the electric push rod Ⅰ31 is specifically used to control the engagement and disengagement of the first gear. When the driver selects the first gear, the electric push rod Ⅰ31 is used to control the engagement and disengagement of the first gear. The push rod I31 pushes the gear sleeve 26 to engage with the first gear passive gear 23; when the next gear needs to be disengaged, the electric push rod I31 pushes the gear sleeve 26 in the opposite direction to separate it from the first gear passive gear 23; the electric push rod II32 is used to control the engagement and disengagement of the second and third gears. Since the driving gears and the driven gears of the second and third gears are both located on the first shaft assembly and the second shaft assembly, the electric push rod II32 requires more complex movements to ensure that the gear sleeve 26 can accurately engage or disengage with the second or third gear passive gear 25; the control mechanism 4 is used to receive the driver's gear shifting information and select an appropriate gear shifting control strategy according to the operating status of the vehicle.

[0032] In addition, the electronically controlled shifting gearbox, the speed change system and the method according to the present invention also have the following additional technical features: According to one embodiment of the present invention, the transmission mechanism 2 further includes a fork shaft and a shift fork, and the electric push rod mechanism 3 directly applies power to the fork shaft, and the fork shaft drives the shift fork and the gear sleeve 26 to move to complete the gear shifting or shifting.

[0033] This technical solution introduces a fork shaft and a shift fork, so that the electric push rod mechanism 3 can directly apply power to the fork shaft, thereby driving the shift fork and the gear sleeve 26 to move, thereby completing the operation of shifting or disengaging gears.

[0034] According to an embodiment of the present invention, the control mechanism 4 further includes an electric control button. The control mechanism 4 transmits a signal to the electric push rod mechanism 3 according to information from the electric control button, and the electric push rod mechanism 3 drives the transmission mechanism 2 to work.

[0035] This technical solution adds an electric control button so that the control mechanism 4 can transmit the corresponding signal to the electric push rod mechanism 3 according to the information of the electric control button, thereby driving the transmission mechanism 2 to work and realize the gear shifting function.

[0036] According to one embodiment of the present invention, the electric push rod I 31 and the electric push rod II 32 of the electric push rod mechanism 3 both adopt an electric push rod assembly with a DC24V voltage, a thrust of 500N, a self-locking force of 250N, and a moving speed of 20mm / s.

[0037] This technical solution ensures that the electric push rod mechanism 3 has sufficient driving force and stability to meet the gear shifting requirements by specifying that the electric push rod Ⅰ31 and the electric push rod Ⅱ32 adopt electric push rod assemblies of specific specifications.

[0038] According to one embodiment of the present invention, the gear sleeve 26 includes a first gear engagement sleeve and a second / third gear engagement sleeve; the first gear engagement sleeve moves to the left to engage the first gear and moves to the right to disengage the first gear; the second / third gear engagement sleeve moves to the left to engage the third gear and moves to the right to disengage the third gear; then moves to the right to engage the second gear and moves to the left to disengage the second gear.

[0039] This technical solution improves the movement mode and gear position correspondence of the gear sleeve 26 so that the first gear engagement sleeve and the second and third gear engagement sleeves can achieve gear shifting and disengaging operations according to different movement directions, thereby clearly defining the function and working principle of the gear sleeve 26.

[0040] According to one embodiment of the present invention, the fork shaft includes a first gear fork shaft 28 and a second and third gear fork shaft 29; the piston end of the electric push rod I31 cooperates with the corresponding first gear fork shaft 28 to complete the first gear shifting and shifting; the piston end of the electric push rod II32 cooperates with the corresponding second and third gear fork shaft 29 to complete the second and third gear shifting and shifting.

[0041] This technical solution defines that the fork shaft includes a first gear fork shaft 28 and a second and third gear fork shaft 29, and cooperates with the piston ends of the electric push rod Ⅰ31 and the electric push rod Ⅱ32 respectively to realize the first gear and second and third gear shifting and disengaging operations, and further clarifies the coordination relationship between the fork shaft and the electric push rod mechanism 3.

[0042] According to one embodiment of the present invention, the electric push rod I 31 and the electric push rod II 32 are fixed side by side to the side of the gearbox 1 by connecting bolts, and the electric push rod I 31 and the electric push rod II 32 are connected to the interface of the controller by connecting wires.

[0043] This technical solution ensures that the electric push rod mechanism 3 can be stably installed on the gearbox 1 and effectively receive the instructions of the controller to work by describing the fixing method of the electric push rod Ⅰ31 and the electric push rod Ⅱ32 and the connection method with the controller.

[0044] Example 2 Based on Example 1, Figures 1 to 3 As shown, this embodiment provides an electronically controlled gear shifting system, the system further includes a differential assembly 5, a left half shaft 6, and a right half shaft 7, wherein: The differential assembly 5 is located at the rear of the electronically controlled gearshift transmission. The differential assembly 5 is connected to the output shaft of the electronically controlled gearshift transmission and receives power from the transmission 1. The differential assembly 5 is connected to the driving wheels of the vehicle through the left half shaft 6 and the right half shaft 7 to distribute the power to the driving wheels.

[0045] This technical solution achieves gear adjustment through the electronically controlled shifting gearbox, and then reasonably distributes the power to the left and right drive wheels through the differential assembly 5, and then stably transmits the power to the drive wheels through the left half shaft 6 and the right half shaft 7, thereby ensuring that the vehicle can obtain the best power performance and handling performance under various road conditions. Specifically, first, the electronically controlled shifting gearbox adjusts the gear position by electronic control to optimize the power output; the transmission mechanism 2, the electric push rod mechanism 3 and the control mechanism 4 inside the gearbox work together; the power is transmitted from the output shaft of the gearbox 1 to the differential assembly 5; the differential assembly 5 is located at the rear of the gearbox 1, and has the important task of distributing the power to the left and right drive wheels; the power is transmitted to the left and right drive wheels of the vehicle through the left half shaft 6 and the right half shaft 7 respectively; when the vehicle turns, the left and right drive wheels can rotate at different speeds, thereby maintaining the stability and handling of the vehicle.

[0046] Example 3 Based on Example 1, Figures 1 to 3 As shown, this embodiment provides an electronically controlled gear shifting method, comprising the following steps: S1. Neutral position judgment and information processing: S11, driver sends information: the driver sends information about shifting or disengaging gears through an electronic control button; S12, receiving and analyzing information: the control mechanism 4 receives the information sent by the driver, analyzes the information content, and determines whether to perform a gear shifting operation or a gear shifting operation; S13, judging the current gear position: the control mechanism 4 judges whether the current gear position is in the neutral position through a sensor or an internal state; S14. Select the operation path: If the current gear is in neutral, then select to enter step S2 to engage or disengage the gear; If the current gear is not in the neutral position, then select to enter step S3 to switch between gears; S2. The process of shifting and disengaging gears in neutral position: S21, gear shifting operation: S211, sending gear shifting information: the control mechanism 4 sends the gear shifting information to the corresponding electric push rod assembly; S212, electric push rod working: the electric push rod assembly starts working after receiving the information, and applies power to the fork shaft; S213, the fork shaft and the shift fork move: the fork shaft drives the shift fork to move, thereby driving the gear sleeve 26 to mesh with the passive gear of the selected gear; S214, confirming that the gear is engaged successfully: the control mechanism 4 detects the meshing state of the gear sleeve 26 and the passive gear through a sensor to confirm whether the gear is engaged successfully; S215, updating the gear status: if the gear is engaged successfully, the control mechanism 4 updates the internal gear status to the selected gear; S22, unblocking operation: S221, sending gear-shifting information: after the driver sends the gear-shifting information, the control mechanism 4 sends the gear-shifting information to the corresponding electric push rod assembly; S222-S225, similar to steps S212-S215, but in the opposite direction, completing the gear shifting operation and updating the gear state to neutral; S3, gear switching process: S31, judging and processing the current gear position: S311, sending gear-shifting information: the control mechanism 4 first determines the current gear position, and sends the gear-shifting information to the electric push rod assembly corresponding to the current gear position; S312-S314, similar to steps S212-S214, but the purpose is to disengage the gear sleeve 26 from the passive gear of the current gear position; S315, confirming that the gear is disengaged successfully: the control mechanism 4 confirms that the gear sleeve 26 has completely disengaged from the passive gear of the current gear; S32, execute the gear shifting operation: S321, sending gear shifting information: while the gear shifting operation is in progress, the control mechanism 4 sends the gear shifting information to the electric push rod assembly corresponding to the target gear position; S322-S325 are similar to steps S212-S215, but the goal is to make the gear sleeve 26 mesh with the passive gear of the target gear and update the gear state to the target gear.

[0047] The technical solution is that the system can receive and analyze the information of shifting or disengaging gears through the driver's electronic control button input; then, the system determines whether the current gear is in the neutral position. This step is the key to ensuring the safety of the gear shifting operation; according to the judgment result, the system chooses to enter different operation paths: if the current gear is in the neutral position, the gear engagement or disengagement operation is directly performed; if it is not in the neutral gear, the disengagement operation is performed first, and then the gear engagement operation is performed to achieve the switching between gears; during the process of engaging and disengaging gears in the neutral position, the system sends information to the corresponding electric push rod assembly to make it work and drive the fork shaft and the shift fork to move, thereby achieving the gear sleeve 26 and the passive gear of the selected gear. Engage or disengage; after each operation, the system will detect and confirm whether the operation is successful through the sensor, and update the internal gear status accordingly; in the process of switching between gears, the system first determines the current gear, and sends the gear disengagement information to disengage the gear sleeve 26 from the passive gear of the current gear; at the same time or subsequently, the system sends the gear engagement information to the electric push rod assembly corresponding to the target gear, so that the gear sleeve 26 engages with the passive gear of the target gear, and updates the gear status to the target gear; throughout the process, the system realizes the automation and intelligence of electronically controlled gear shifting through information processing, gear judgment and operation control, improves the accuracy of gear shifting, and ensures driving safety.

[0048] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An electronically controlled gearshift transmission, characterized in that: The invention comprises a gearbox (1), a transmission mechanism (2), an electric push rod mechanism (3) and a control mechanism (4) which cooperate with the gearbox (1), wherein: The transmission mechanism (2) comprises a first shaft assembly and a second shaft assembly, wherein; A shaft assembly, including a second gear driving gear (21) and a third gear driving gear (22); The two-shaft assembly includes a first-gear driven gear (23), a second-gear driven gear (24), a third-gear driven gear (25), and matching gear sleeves (26) and gear seats (27); The electric push rod mechanism (3) comprises an electric push rod I (31) for controlling the engagement and disengagement of the first gear, and an electric push rod II (32) for controlling the engagement and disengagement of the second and third gears; The control mechanism (4) comprises a controller, and the controller is used to select a gear shift control strategy, namely, a gear shift time, a gear shift speed, a gear shift position, and a gear shift position.

2. The electronically controlled shift transmission as claimed in claim 1, characterized in that: The transmission mechanism (2) also includes a fork shaft and a shift fork. The electric push rod mechanism (3) directly applies power to the fork shaft, and the fork shaft drives the shift fork and the gear sleeve (26) to move, thereby completing the gear shifting or shifting.

3. The electronically controlled shift transmission as claimed in claim 1, characterized in that: The control mechanism (4) also includes an electric control button. The control mechanism (4) transmits a signal to the electric push rod mechanism (3) according to information from the electric control button, and the electric push rod mechanism (3) drives the transmission mechanism (2) to work.

4. The electronically controlled shift transmission as claimed in claim 1, characterized in that: The electric push rod I (31) and the electric push rod II (32) of the electric push rod mechanism (3) both adopt an electric push rod assembly with a DC24V voltage, a thrust force of 500N, a self-locking force of 250N, and a moving speed of 20mm / s.

5. The electronically controlled shift transmission as claimed in claim 1, characterized in that: The gear sleeve (26) comprises a first gear meshing sleeve and a second and third gear meshing sleeve; the first gear meshing sleeve moves to the left to engage the first gear and moves to the right to disengage the first gear; the second and third gear meshing sleeve moves to the left to engage the third gear and moves to the right to disengage the third gear; further moves to the right to engage the second gear and moves to the left to disengage the second gear.

6. The electronically controlled shift transmission as claimed in claim 2, characterized in that: The fork shaft comprises a first gear fork shaft (28) and a second and third gear fork shaft (29); the piston end of the electric push rod I (31) cooperates with the corresponding first gear fork shaft (28) to complete the first gear engagement and disengagement; the piston end of the electric push rod II (32) cooperates with the corresponding second and third gear fork shaft (29) to complete the second and third gear engagement and disengagement.

7. The electronically controlled shift transmission as claimed in claim 1, characterized in that: The electric push rod I (31) and the electric push rod II (32) are fixed side by side to the side of the gearbox (1) by connecting bolts, and the electric push rod I (31) and the electric push rod II (32) are connected to the interface of the controller by connecting wires.

8. An electronically controlled shifting transmission system, using the electronically controlled shifting transmission as claimed in any one of claims 1 to 7, characterized in that: The system also includes a differential assembly (5), a left half shaft (6), and a right half shaft (7), wherein: The differential assembly (5) is located at the rear of the electronically controlled gearshift transmission. The differential assembly (5) is connected to the output shaft of the electronically controlled gearshift transmission and receives power from the transmission (1). The differential assembly (5) is connected to the driving wheels of the vehicle through the left half shaft (6) and the right half shaft (7) to distribute the power to the driving wheels.

9. An electronically controlled gear shifting method, using the electronically controlled gear shifting transmission as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1. Neutral position judgment and information processing: S11, driver sends information: the driver sends information about shifting or disengaging gears through an electronic control button; S12, receiving and analyzing information: the control mechanism (4) receives the information sent by the driver, analyzes the information content, and determines whether to perform a gear shifting operation or a gear shifting operation; S13, determining the current gear position: the control mechanism (4) determines whether the current gear position is in a neutral position through a sensor or an internal state; S14. Select the operation path: If the current gear is in neutral, then select to enter step S2 to engage or disengage the gear; If the current gear is not in the neutral position, then select to enter step S3 to switch between gears; S2. The process of shifting and disengaging gears in neutral position: S21, gear shifting operation: S211, sending gear shifting information: the control mechanism (4) sends the gear shifting information to the corresponding electric push rod assembly; S212, electric push rod working: the electric push rod assembly starts working after receiving the information, and applies power to the fork shaft; S213, the fork shaft and the shift fork move: the fork shaft drives the shift fork to move, thereby driving the gear sleeve (26) to mesh with the passive gear of the selected gear position; S214, confirming that the gear engagement is successful: the control mechanism (4) detects the meshing state of the gear sleeve (26) and the passive gear through a sensor to confirm whether the gear engagement is successful; S215, updating the gear status: if the gear engagement is successful, the control mechanism (4) updates the internal gear status to the selected gear; S22, unblocking operation: S221, sending gear-shifting information: after the driver sends the gear-shifting information, the control mechanism (4) sends the gear-shifting information to the corresponding electric push rod assembly; S222-S225, similar to steps S212-S215, but in the opposite direction, completing the gear shifting operation and updating the gear state to neutral; S3, gear switching process: S31, judging and processing the current gear position: S311, sending gear-shifting information: the control mechanism (4) first determines the current gear position, and sends the gear-shifting information to the electric push rod assembly corresponding to the current gear position; S312-S314, similar to steps S212-S214, but the purpose is to disengage the gear sleeve (26) from the passive gear of the current gear position; S315, confirming that the gear is disengaged successfully: the control mechanism (4) confirms that the gear sleeve (26) has completely disengaged from the passive gear of the current gear position; S32, execute the gear shifting operation: S321, sending gear shifting information: while the gear shifting operation is in progress, the control mechanism (4) sends the gear shifting information to the electric push rod assembly corresponding to the target gear position; S322-S325 are similar to steps S212-S215, but the goal is to make the gear sleeve (26) mesh with the passive gear of the target gear and update the gear state to the target gear.

Images