Gearbox shift module and vehicle

Abstract

The present application belongs to the field of vehicle technology, and discloses a gearbox shifting module and a vehicle. When the selected shifting block is in the shifting position, the shifting cylinder telescopic shaft can drive the selected shifting block to move in the first direction, thereby driving the shifting fork to move in the first direction synchronously to complete the shifting. When the selected shifting block is in the non-shifting position, the shifting cylinder telescopic shaft is always separated from the selected shifting block, at which time the shifting cylinder cannot drive the shifting fork to move in the first direction to maintain the current gear. The gearbox shifting module can realize shifting when the selected shifting block is in the shifting position, and can maintain the current gear when the selected shifting block is in the non-shifting position. In addition, the shifting shaft extends in the first direction and is parallel to and spaced apart from the shifting cylinder telescopic shaft, i.e., the two are arranged on different shafts, thereby reducing the total length of the gearbox shifting module in the first direction and saving space.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a transmission shift module and a vehicle. Background Technology

[0002] To reduce driver fatigue and improve the automation of power transmission in commercial vehicles, automated manual transmissions (AMT) are gradually replacing manual transmissions.

[0003] In electromechanical automatic transmissions, gear shifting is typically accomplished using shift forks. For example, existing technology provides a shifting actuator unit in which a first shift cylinder is arranged along a first direction, and a drive shift fork is located on the output shaft of the first shift cylinder. When the output shaft reciprocates along the first direction, it can drive the drive shift fork to move along the first direction to achieve gear shifting. However, the problem is that the first shift cylinder and multiple drive shift forks are arranged sequentially along the first direction, resulting in a significant space occupation along the first direction in this electromechanical automatic transmission. Summary of the Invention

[0004] According to one aspect of the present invention, the present invention provides a gearbox shifting module to solve the problem that the existing electromechanical automatic transmission occupies too much space along the direction of the shift fork movement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gearbox shift module includes a shift actuator for mounting on the housing of the gearbox; the shift actuator includes:

[0007] A shift cylinder includes a shift cylinder fixed end for being fixedly disposed in the housing and a shift cylinder telescopic shaft capable of reciprocating relative to the shift cylinder fixed end in a first direction;

[0008] A shift shaft extends along a first direction and is parallel to and spaced apart from the shift cylinder extension shaft. The shift shaft is equipped with a shift fork and a shift selector block. The shift fork, the shift selector block, and the shift shaft can move synchronously along the first direction. The shift selector block can rotate along the axis of the shift shaft to have a shift position and a non-shift position. When the shift selector block is in the shift position, the shift cylinder extension shaft can drive the shift selector block to move along the first direction. When the shift selector block is in the non-shift position, the shift cylinder extension shaft is always separated from the shift selector block.

[0009] A gear selection drive is used to drive the gear selection lever to rotate along the axis of the shift shaft.

[0010] As a preferred embodiment of the gearbox shift module, the shift drive component is a shift cylinder. The shift cylinder includes a shift cylinder fixed end for being fixedly mounted on the housing and a shift cylinder telescopic shaft mounted on the shift cylinder fixed end. The shift cylinder telescopic shaft can reciprocate relative to the shift cylinder fixed end in a second direction to drive the shift lever to rotate along the axis of the shift shaft. The first direction is perpendicular to the second direction.

[0011] As a preferred embodiment of the gearbox shift module, the shift selector block is sleeved on the shift shaft. The shift selector block has a mounting groove. When the shift selector block is in the shift position, the shift cylinder telescopic shaft has a protrusion. The protrusion extends into the mounting groove and abuts against the two side walls of the mounting groove along the first direction. When the shift selector block is in the non-shift position, the protrusion disengages from the mounting groove.

[0012] As a preferred embodiment of the gearbox shift module, the shift fork disposed on the shift shaft is the main gearbox shift fork, and the shift actuator further includes:

[0013] The front auxiliary gearbox shift cylinder includes a front auxiliary gearbox shift cylinder fixed end fixedly mounted on the housing and a front auxiliary gearbox shift cylinder telescopic shaft capable of reciprocating relative to the front auxiliary gearbox shift cylinder fixed end in a first direction.

[0014] The front auxiliary gearbox shift fork is fixedly mounted on the telescopic shaft of the front auxiliary gearbox shift cylinder.

[0015] As a preferred embodiment of the gearbox shift module, the shift fork disposed on the shift shaft is the main gearbox shift fork, and the shift actuator further includes:

[0016] The rear auxiliary gearbox shift cylinder includes a rear auxiliary gearbox shift cylinder fixed end for fixedly mounted on the housing and a rear auxiliary gearbox shift cylinder telescopic shaft capable of reciprocating relative to the rear auxiliary gearbox shift cylinder fixed end in a first direction.

[0017] The rear auxiliary gearbox shift fork is fixedly mounted on the telescopic shaft of the rear auxiliary gearbox shift cylinder.

[0018] As a preferred embodiment of the gearbox shift module, the gearbox shift module further includes a shift control device, which includes a gas input pipeline, a gas discharge pipeline, and a shift cylinder control valve group. The gas input pipeline is used to connect to a high-pressure gas source. The inner cavity of the shift cylinder is provided with a shift cylinder piston connected to the shift cylinder telescopic shaft. The shift cylinder piston divides the inner cavity of the shift cylinder into a first cavity and a second cavity. The shift cylinder control valve group is used to connect the inner cavity of the gas input pipeline to the first cavity and the inner cavity of the gas discharge pipeline to the second cavity, or to connect the inner cavity of the gas input pipeline to the second cavity and the inner cavity of the gas discharge pipeline to the first cavity.

[0019] As a preferred embodiment of the gearbox shift module, the shift cylinder control valve group includes a first shift cylinder control valve and a second shift cylinder control valve. The first shift cylinder control valve is used to connect the first chamber to the inner cavity of the gas input pipeline or to the inner cavity of the gas discharge pipeline. The second shift cylinder control valve is used to connect the second chamber to the inner cavity of the gas input pipeline or to the inner cavity of the gas discharge pipeline.

[0020] As a preferred embodiment of the gearbox shifting module, the shifting actuator further includes an axle brake cylinder, and the shifting control device further includes an axle brake cylinder control valve group. The axle brake cylinder control valve group is used to connect the rodless chamber of the axle brake cylinder with the inner cavity of the gas input pipeline or with the inner cavity of the gas discharge pipeline.

[0021] As a preferred embodiment of the gearbox shift module, the shift control device further includes two pressure regulating valves disposed on the gas input pipeline. The input ends of the two pressure regulating valves are both used to connect to a high-pressure gas source, and the output ends of the two pressure regulating valves are both connected to the input end of the shift cylinder control valve group.

[0022] According to another aspect of the present invention, a vehicle is provided, including the above-described gearbox shift module, and further including a gearbox body having a housing, wherein the shift actuator is disposed in the housing.

[0023] The beneficial effects of this invention are:

[0024] This invention provides a gearbox shifting module, including a shifting actuator for mounting in the gearbox housing. The shifting actuator includes a shift cylinder, a shift shaft, and a shift selection drive component. The shift cylinder includes a fixed end for fixedly mounting in the housing and a reciprocating shaft for reciprocating relative to the fixed end in a first direction. The shift shaft extends in the first direction and is parallel to and spaced apart from the shift cylinder reciprocating shaft. The shift shaft is provided with a shift fork and a shift selection block. The shift fork, shift selection block, and shift shaft can move synchronously in the first direction. The shift selection block can rotate along the axis of the shift shaft to have a shifting position and a non-shifting position. When the shift selection block is in the shifting position, the shift cylinder reciprocating shaft can drive the shift selection block to move in the first direction, thereby driving the shift fork to move synchronously in the first direction to complete the shift. When the shift selection block is in the non-shifting position, the shift cylinder reciprocating shaft is always separated from the shift selection block. At this time, the shift cylinder cannot drive the shift fork to move in the first direction to maintain the current gear. The gear selector drive unit drives the gear selector lever to rotate along the axis of the shift shaft, thereby changing the position of the gear selector lever. This transmission shift module can shift gears when the gear selector lever is in the shift position and maintain the current gear when the gear selector lever is in the non-shift position. Furthermore, the shift shaft extends along a first direction and is parallel to and spaced apart from the extension shaft of the shift cylinder, i.e., they are off-axis, thus reducing the total length of the transmission shift module along the first direction and saving space.

[0025] The present invention also provides a vehicle including the aforementioned transmission shift module, and a transmission body having a housing, wherein the shift actuator is disposed in the housing. This transmission shift module can shift gears when the shift selector is in the shift position and maintain the current gear when the shift selector is in the non-shift position. Furthermore, the shift shaft extends along a first direction and is parallel to and spaced apart from the shift cylinder extension shaft, i.e., they are coaxial, thereby reducing the total length of the transmission shift module along the first direction and saving space. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the gear shifting actuator in an embodiment of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the gear shifting actuator in an embodiment of the present invention. Figure 2 ;

[0028] Figure 3 This is a cross-sectional view of the gear shifting actuator in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the gear selection lever in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the gear shift control device in an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Gear shift cylinder; 11. Gear shift cylinder fixed end; 12. Gear shift cylinder telescopic shaft; 121. Protrusion;

[0033] 2. Shift shaft; 21. Shift fork; 22. Shift selector block; 221. Mounting slot; 222. Transmission protrusion; 223. Slot; 23. Support block; 24. Support frame; 25. Interlock guide block;

[0034] 3. Gear selector cylinder; 31. Fixed end of gear selector cylinder; 32. Telescopic shaft of gear selector cylinder;

[0035] 41. Front auxiliary gearbox shift cylinder; 411. Fixed end of front auxiliary gearbox shift cylinder; 412. Telescopic shaft of front auxiliary gearbox shift cylinder; 42. Front auxiliary gearbox shift fork;

[0036] 51. Rear auxiliary gearbox shift cylinder; 511. Fixed end of rear auxiliary gearbox shift cylinder; 512. Telescopic shaft of rear auxiliary gearbox shift cylinder;

[0037] 10. Shell;

[0038] 100. Gas input line; 110. Gas filter; 120. Clutch intake line;

[0039] 200. Gas exhaust pipeline;

[0040] 300, Shift cylinder control valve assembly; 310, First shift cylinder control valve; 320, Second shift cylinder control valve;

[0041] 400, Axis brake cylinder; 410, Axis brake cylinder control valve assembly; 411, First axis brake cylinder control valve; 412, Second axis brake cylinder control valve;

[0042] 500. Pressure regulating valve; 510. Pressure sensor;

[0043] 600, Gear selector cylinder control valve assembly; 610, First gear selector cylinder control valve; 620, Second gear selector cylinder control valve;

[0044] 700. Front auxiliary gearbox shift cylinder control valve assembly; 710. First front auxiliary gearbox shift cylinder control valve; 720. Second front auxiliary gearbox shift cylinder control valve;

[0045] 800. Rear auxiliary gearbox shift cylinder control valve assembly; 810. First rear auxiliary gearbox shift cylinder control valve; 820. Second rear auxiliary gearbox shift cylinder control valve;

[0046] 900, Clutch drive cylinder; 910, Clutch drive control valve assembly; 911, First clutch drive control valve; 912, Second clutch drive control valve; 920, Check valve. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] In electromechanical automatic transmissions, gear shifting is typically accomplished using shift forks. For example, existing technology provides a shifting actuator unit in which a first shift cylinder is arranged along a first direction, and a drive shift fork is located on the output shaft of the first shift cylinder. When the output shaft reciprocates along the first direction, it can drive the drive shift fork to move along the first direction to achieve gear shifting. However, the problem is that the first shift cylinder and multiple drive shift forks are arranged sequentially along the first direction, resulting in a significant space occupation along the first direction in this electromechanical automatic transmission.

[0052] To address the aforementioned issues, this embodiment provides a gearbox shifting module to solve the problem of excessive space occupation in the direction of shift fork movement in existing electromechanical automatic transmissions, and can be used in the field of vehicle technology.

[0053] Reference Figures 1-4 The gearbox shift module includes a shift actuator for mounting on the gearbox housing 10. The shift actuator includes a shift cylinder 1, a shift shaft 2, and a shift drive component. The shift cylinder 1 includes a shift cylinder fixed end 11 fixedly mounted on the housing 10 and a shift cylinder telescopic shaft 12 capable of reciprocating relative to the shift cylinder fixed end 11 in a first direction. The shift shaft 2 extends along a first direction and is parallel to and spaced apart from the shift cylinder extension shaft 12. The shift shaft 2 is equipped with a shift fork 21 and a shift selector block 22. The shift fork 21, shift selector block 22, and shift shaft 2 can move synchronously along the first direction. The shift selector block 22 can rotate along the axis of the shift shaft 2, having shift and non-shift positions. When the shift selector block 22 is in the shift position, the shift cylinder extension shaft 12 drives the shift selector block 22 to move along the first direction, thereby causing the shift fork 21 to move synchronously along the first direction to complete the shift. When the shift selector block 22 is in the non-shift position, the shift cylinder extension shaft 12 is always separated from the shift selector block 22. At this time, the shift cylinder 1 cannot drive the shift fork 21 to move along the first direction, thus maintaining the current gear. A shift selector drive is used to drive the shift selector block 22 to rotate along the axis of the shift shaft 2, thereby driving the shift selector block 22 to rotate and change its position. The gearbox shift module can shift gears when the shift selector 22 is in the shift position and maintain the current gear when the shift selector 22 is in the non-shift position. In addition, the shift shaft 2 extends along the first direction and is parallel to and spaced apart from the shift cylinder extension shaft 12, that is, the two are set off-axis, thereby reducing the total length of the gearbox shift module along the first direction and saving space.

[0054] In this embodiment, the shift fork 21 is rotatably mounted on the shift shaft 2. The shift shaft 2 and the gear selector block 22 are fixedly connected by a pin. When the gear selector block 22 and the shift shaft 2 rotate synchronously, the shift fork 21 remains fixed.

[0055] Optionally, the housing 10 is fixedly provided with a support block 23 and a support frame 24. The shift shaft 2 passes through the support block 23 and the support frame 24 in sequence, thereby installing the shift shaft 2 on the housing 10 and enabling it to rotate relative to the housing 10 along its own axis.

[0056] In addition, in other embodiments, some shift forks 21 need to be kept fixed and cannot move with the movement of shift shaft 2. For this purpose, the shift forks 21 that need to be kept fixed are provided with grooves, and the support block 23 is also fixedly connected with an interlocking guide block 25. The interlocking guide block 25 is inserted into the groove, thereby limiting the position of the shift fork 21.

[0057] Continue to refer to Figures 1-4 The gear selection drive component is a gear selection cylinder 3. The gear selection cylinder 3 includes a gear selection cylinder fixed end 31 fixedly mounted on the housing 10 and a gear selection cylinder telescopic shaft 32 mounted on the gear selection cylinder fixed end 31. The gear selection cylinder telescopic shaft 32 can reciprocate relative to the gear selection cylinder fixed end 31 in a second direction to drive the gear selection block 22 to rotate along the axis of the shift shaft 2. The first direction is perpendicular to the second direction, so that the gear selection cylinder 3 extends as a whole along the second direction, so that the transmission structure between the gear selection cylinder 3 and the gear selection block 22 is simple. In this embodiment, the outer wall of the gear selection block 22 is provided with a transmission protrusion 222. The gear selection cylinder telescopic shaft 32 can drive the transmission protrusion 222 to move, so that the gear selection block 22 rotates along the axis of the shift shaft 2.

[0058] Optionally, the telescopic shaft 32 of the gear selector cylinder is used to drive the gear selector lever 22 from the non-shifting position to the shifting position. For the reset of the gear selector lever 22, a torsion spring is also provided. The torsion spring is disposed on the shift shaft 2 or the gear selector lever 22 and is used to provide an elastic force to move the gear selector lever 22 from the shifting position to the non-shifting position.

[0059] Optionally, the gear selector 22 is also provided with a slot 223, and the housing 10 is connected to an interlocking steel ball. The interlocking steel ball can be driven by a drive component. When the gear selector 22 and the shift fork 21 move to the set position, the interlocking steel ball can be driven to insert into the slot 223 to lock the position of the gear selector 22.

[0060] Continue to refer to Figures 1-4The gear selector 22 is sleeved on the shift shaft 2. The gear selector 22 has a mounting groove 221. When the gear selector 22 is in the shift position, the shift cylinder telescopic shaft 12 has a protrusion 121. The protrusion 121 extends into the mounting groove 221 and abuts against the two side walls of the mounting groove 221 along the first direction. When the gear selector 22 is in the non-shift position, the protrusion 121 disengages from the mounting groove 221. Thus, the shift cylinder telescopic shaft 12 drives the gear selector 22 through the abutment between the protrusion 121 and the two side walls of the mounting groove 221 along the first direction. It can drive the gear selector 22 to reciprocate along the first direction without the need for additional structures such as a return spring.

[0061] Continue to refer to Figures 1-4 The shift fork 21, located on the shift shaft 2, is the main gearbox shift fork, used to shift gears in the main gearbox. Multiple shift forks 21 can be provided to achieve shifting operations for different gears. The shifting actuator also includes a front and auxiliary gearbox shift cylinder 41 and a front and auxiliary gearbox shift fork 42. The front and auxiliary gearbox shift cylinder 41 includes a front and auxiliary gearbox shift cylinder fixed end 411 fixedly mounted on the housing 10 and a front and auxiliary gearbox shift cylinder telescopic shaft 412 capable of reciprocating relative to the front and auxiliary gearbox shift cylinder fixed end 411 in a first direction. The front and auxiliary gearbox shift fork 42 is fixedly mounted on the front and auxiliary gearbox shift cylinder telescopic shaft 412, thereby driving the front and auxiliary gearbox shift fork 42 to move, thus achieving gear shifting in the front and auxiliary gearbox.

[0062] Continue to refer to Figures 1-4 The gear shifting device also includes a rear auxiliary gearbox shift cylinder 51 and a rear auxiliary gearbox shift fork. The rear auxiliary gearbox shift cylinder 51 includes a rear auxiliary gearbox shift cylinder fixed end 511 fixedly mounted on the housing 10 and a rear auxiliary gearbox shift cylinder telescopic shaft 512 capable of reciprocating relative to the rear auxiliary gearbox shift cylinder fixed end 511 along a first direction. The rear auxiliary gearbox shift fork is fixedly mounted on the rear auxiliary gearbox shift cylinder telescopic shaft 512, thereby driving the rear auxiliary gearbox shift fork to move through the rear auxiliary gearbox shift cylinder telescopic shaft 512 to realize gear shifting in the rear auxiliary gearbox. In addition, both the front auxiliary gearbox shift cylinder 41 and the rear auxiliary gearbox shift cylinder 51 extend along the first direction as a whole, so that the arrangement of various components in the gear shifting device is more compact.

[0063] Reference Figure 5The gearbox shift module also includes a shift control device, which includes a gas input line 100, a gas discharge line 200, and a shift cylinder control valve assembly 300. The gas input line 100 is used to connect to a high-pressure gas source. The inner cavity of the shift cylinder 1 is provided with a shift cylinder piston connected to the shift cylinder telescopic shaft 12, which divides the inner cavity of the shift cylinder 1 into a first cavity and a second cavity. The shift cylinder control valve assembly 300 is used to connect the inner cavity of the gas input line 100 to the first cavity and the inner cavity of the gas discharge line 200 to the second cavity, or to connect the inner cavity of the gas input line 100 to the second cavity and the inner cavity of the gas discharge line 200 to the first cavity, thereby driving the shift cylinder piston of the shift cylinder 1 to move through air pressure, thereby driving the shift cylinder telescopic shaft 12 to reciprocate.

[0064] Specifically, the shift cylinder control valve assembly 300 includes a first shift cylinder control valve 310 and a second shift cylinder control valve 320. The first shift cylinder control valve 310 is used to connect the first chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. The second shift cylinder control valve 320 is used to connect the second chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. Both the first shift cylinder control valve 310 and the second shift cylinder control valve 320 can be controlled by an ECU.

[0065] Continue to refer to Figure 5 The shift actuator also includes a shaft brake cylinder 400, which is used to reduce the speed of the primary or intermediate shaft of the gearbox. During upshifting, it reduces the speed of the primary or intermediate shaft, improving shift smoothness. The shift control device also includes a shaft brake cylinder control valve assembly 410, which connects the rodless chamber of the shaft brake cylinder 400 to the inner cavity of the gas input pipe 100 or the inner cavity of the gas discharge pipe 200, thereby driving the piston movement of the shaft brake cylinder 400 through air pressure.

[0066] Specifically, the axle brake cylinder control valve assembly 410 includes a first axle brake cylinder control valve 411 and a second axle brake cylinder control valve 412. The input end of the first axle brake cylinder control valve 411 is connected to the inner cavity of the gas input pipeline 100, and the output end is connected to the rodless cavity of the axle brake cylinder 400. It is used to control the connection and disconnection between the inner cavity of the gas input pipeline 100 and the rodless cavity of the axle brake cylinder 400. The input end of the second axle brake cylinder control valve 412 is connected to the rodless cavity of the axle brake cylinder 400, and the output end is connected to the inner cavity of the gas discharge pipeline 200. It is also used to control the connection and disconnection between the rodless cavity of the axle brake cylinder 400 and the inner cavity of the gas discharge pipeline 200. Both the first axle brake cylinder control valve 411 and the second axle brake cylinder control valve 412 can be controlled by an ECU. Initially, the first axle brake cylinder control valve 411 is closed, preventing communication between the inner cavity of the gas input pipe 100 and the rodless chamber of the axle brake cylinder 400. The second axle brake cylinder control valve 412 is open, connecting the rodless chamber of the axle brake cylinder 400 to the inner cavity of the gas discharge pipe 200, allowing gas to be discharged from the rodless chamber of the axle brake cylinder 400. When braking is required, the ECU controls the first axle brake cylinder control valve 411 to open, connecting the inner cavity of the gas input pipe 100 to the rodless chamber of the axle brake cylinder 400, allowing high-pressure gas to enter the rodless chamber of the axle brake cylinder 400, thereby driving the piston of the axle brake cylinder 400 to complete the braking operation. Simultaneously, the ECU controls the second axle brake cylinder control valve 412 to close, cutting off the communication between the rodless chamber of the axle brake cylinder 400 and the inner cavity of the gas discharge pipe 200.

[0067] Continue to refer to Figure 5 The inner cavity of the gear selection cylinder 3 is provided with a gear selection cylinder piston connected to the gear selection cylinder telescopic shaft 32. The gear selection cylinder piston divides the inner cavity of the gear selection cylinder 3 into a third cavity and a fourth cavity. The gear shifting actuator also includes a gear selection cylinder control valve group 600. The gear selection cylinder control valve group 600 is used to connect the inner cavity of the gas input pipeline 100 to the third cavity and the inner cavity of the gas discharge pipeline 200 to the fourth cavity, or to connect the inner cavity of the gas input pipeline 100 to the fourth cavity and the inner cavity of the gas discharge pipeline 200 to the third cavity, thereby driving the gear selection cylinder piston to move by air pressure, so as to drive the gear selection cylinder telescopic shaft 32 to reciprocate.

[0068] Specifically, the gear selection cylinder control valve assembly 600 includes a first gear selection cylinder control valve 610 and a second gear selection cylinder control valve 620. The first gear selection cylinder control valve 610 is used to connect the third chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. The second gear selection cylinder control valve 620 is used to connect the fourth chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. Both the first gear selection cylinder control valve 610 and the second gear selection cylinder control valve 620 can be controlled by an ECU.

[0069] Continue to refer to Figure 5 The inner cavity of the front auxiliary gearbox shift cylinder 41 is provided with a front auxiliary gearbox shift cylinder piston connected to the front auxiliary gearbox shift cylinder telescopic shaft 412. The front auxiliary gearbox shift cylinder piston divides the inner cavity of the front auxiliary gearbox shift cylinder 41 into a fifth chamber and a sixth chamber. The shifting actuator also includes a front auxiliary gearbox shift cylinder control valve group 700. The front auxiliary gearbox shift cylinder control valve group 700 is used to connect the inner cavity of the gas input pipeline 100 to the fifth chamber and the inner cavity of the gas discharge pipeline 200 to the sixth chamber, or to connect the inner cavity of the gas input pipeline 100 to the sixth chamber and the inner cavity of the gas discharge pipeline 200 to the fifth chamber, thereby driving the front auxiliary gearbox shift cylinder piston to move through air pressure, so as to drive the front auxiliary gearbox shift cylinder telescopic shaft 412 to reciprocate.

[0070] Specifically, the front and auxiliary gearbox shift cylinder control valve assembly 700 includes a first front and auxiliary gearbox shift cylinder control valve 710 and a second front and auxiliary gearbox shift cylinder control valve 720. The first front and auxiliary gearbox shift cylinder control valve 710 is used to connect the fifth chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. The second front and auxiliary gearbox shift cylinder control valve 720 is used to connect the sixth chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. Both the first front and auxiliary gearbox shift cylinder control valve 710 and the second front and auxiliary gearbox shift cylinder control valve 720 can be controlled by an ECU.

[0071] Continue to refer to Figure 5 The inner cavity of the rear auxiliary gearbox shift cylinder 51 is provided with a rear auxiliary gearbox shift cylinder piston connected to the rear auxiliary gearbox shift cylinder telescopic shaft 512. The rear auxiliary gearbox shift cylinder piston divides the inner cavity of the rear auxiliary gearbox shift cylinder 51 into a seventh chamber and an eighth chamber. The shifting actuator also includes a rear auxiliary gearbox shift cylinder control valve group 800. The rear auxiliary gearbox shift cylinder control valve group 800 is used to connect the inner cavity of the gas input pipeline 100 to the seventh chamber and the inner cavity of the gas discharge pipeline 200 to the eighth chamber, or to connect the inner cavity of the gas input pipeline 100 to the eighth chamber and the inner cavity of the gas discharge pipeline 200 to the seventh chamber, thereby driving the rear auxiliary gearbox shift cylinder piston to move through air pressure, so as to drive the rear auxiliary gearbox shift cylinder telescopic shaft 512 to reciprocate.

[0072] Specifically, the rear auxiliary gearbox shift cylinder control valve assembly 800 includes a first rear auxiliary gearbox shift cylinder control valve 810 and a second rear auxiliary gearbox shift cylinder control valve 820. The first rear auxiliary gearbox shift cylinder control valve 810 is used to connect the seventh chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. The second rear auxiliary gearbox shift cylinder control valve 820 is used to connect the eighth chamber to the inner cavity of the gas input pipeline 100 or to the inner cavity of the gas discharge pipeline 200. Both the first rear auxiliary gearbox shift cylinder control valve 810 and the second rear auxiliary gearbox shift cylinder control valve 820 can be controlled by an ECU.

[0073] Continue to refer to Figure 5 The shift control device also includes two pressure regulating valves 500 installed in the gas input pipeline 100. The input ends of both pressure regulating valves 500 are connected to a high-pressure gas source, and the output ends of both pressure regulating valves 500 are connected to the input end of the shift cylinder control valve assembly 300. This allows for the regulation of the gas flow rate and pressure in the gas input pipeline 100 by controlling the opening and closing of the two pressure regulating valves 500. Optionally, a pressure sensor 510 is installed at the output end of the two pressure regulating valves 500 to collect the gas pressure at the output end of the pressure regulating valves 500, facilitating subsequent pressure control by the ECU. Optionally, a gas filter 110 is also installed between the input ends of the two pressure regulating valves 500 and the high-pressure gas source.

[0074] Continue to refer to Figure 5 The shift control device also includes a clutch intake pipe 120, which is also connected to a high-pressure air source. The clutch intake pipe 120 is used to provide high-pressure gas to the clutch drive cylinder 900, which is used to control the on / off state of the clutch. In this embodiment, the gas input pipe 100 and the clutch intake pipe 120 are arranged in parallel so that the clutch drive cylinder 900 is not connected to the same intake pipe as other cylinders, thus ensuring the required air pressure for the clutch drive cylinder 900.

[0075] The shift control device also includes a clutch drive control valve group 910, which is used to connect the rodless chamber of the clutch drive cylinder 900 with the inner cavity of the gas input pipeline 100 or with the inner cavity of the gas discharge pipeline 200, so that gas enters the rodless chamber of the clutch drive cylinder 900 or is discharged from the rodless chamber of the clutch drive cylinder 900 to drive the piston of the clutch drive cylinder 900 to reciprocate.

[0076] Specifically, the clutch drive control valve assembly 910 includes a first clutch drive control valve 911 and a second clutch drive control valve 912. The first clutch drive control valve 911 is used to connect or disconnect the rodless chamber of the clutch drive cylinder 900 from the inner cavity of the clutch intake pipe 120. The second clutch drive control valve 912 is used to connect or disconnect the rodless chamber of the clutch drive cylinder 900 from the inner cavity of the gas discharge pipe 200. Optionally, two first clutch drive control valves 911 are provided, arranged in parallel, to regulate the gas flow rate and pressure entering the rodless chamber of the clutch drive cylinder 900. Two second clutch drive control valves 912 are provided, arranged in parallel, to regulate the gas flow rate discharged from the rodless chamber of the clutch drive cylinder 900, so that the gas is discharged from the rodless chamber of the clutch drive cylinder 900 quickly or slowly to meet different requirements.

[0077] Optionally, a one-way valve 920 is provided between the input end of the first clutch drive control valve 911 and the high-pressure gas source. The one-way valve 920 only allows gas to flow from the high-pressure gas source to the input end of the first clutch drive control valve 911 to prevent gas backflow.

[0078] This embodiment also provides a vehicle, including the aforementioned transmission shift module, and a transmission body. The transmission body has a housing 10, and the shift actuator is disposed on the housing 10. This transmission shift module can shift gears when the shift selector 22 is in the shift position, and maintain the current gear when the shift selector 22 is in the non-shift position. Furthermore, the shift shaft 2 extends along a first direction and is parallel to and spaced apart from the shift cylinder extension shaft 12, i.e., they are arranged opposite axes, thereby reducing the total length of the transmission shift module along the first direction and saving space.

[0079] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gearbox shift module, comprising a shift actuator disposed in a gearbox housing (10); characterized in that, The gear shifting actuator includes: The shift cylinder (1) includes a shift cylinder fixed end (11) for fixedly disposed in the housing (10) and a shift cylinder telescopic shaft (12) capable of reciprocating relative to the shift cylinder fixed end (11) in a first direction. A shift shaft (2) extends along a first direction and is parallel to and spaced apart from the shift cylinder telescopic shaft (12). The shift shaft (2) is provided with a shift fork (21) and a shift selector block (22). The shift fork (21), the shift selector block (22), and the shift shaft (2) can move synchronously along the first direction. The shift selector block (22) can rotate along the axis of the shift shaft (2) to have a shift position and a non-shift position. When the shift selector block (22) is in the shift position, the shift cylinder telescopic shaft (12) can drive the shift selector block (22) to move along the first direction. When the shift selector block (22) is in the non-shift position, the shift cylinder telescopic shaft (12) is always separated from the shift selector block (22). A gear selector drive is used to drive the gear selector block (22) to rotate along the axis of the gear shift shaft (2).

2. The gearbox shifting module according to claim 1, characterized in that, The gear selection drive component is a gear selection cylinder (3). The gear selection cylinder (3) includes a gear selection cylinder fixed end (31) for fixedly mounted on the housing (10) and a gear selection cylinder telescopic shaft (32) mounted on the gear selection cylinder fixed end (31). The gear selection cylinder telescopic shaft (32) can reciprocate relative to the gear selection cylinder fixed end (31) in a second direction to drive the gear selection paddle (22) to rotate along the axis of the gear shift shaft (2). The first direction is perpendicular to the second direction.

3. The gearbox shifting module according to claim 1, characterized in that, The gear selector (22) is sleeved on the shift shaft (2). The gear selector (22) has a mounting groove (221). When the gear selector (22) is in the shift position, the shift cylinder telescopic shaft (12) has a protrusion (121) protruding from it. The protrusion (121) extends into the mounting groove (221) and abuts against the two side walls of the mounting groove (221) along the first direction. When the gear selector (22) is in the non-shift position, the protrusion (121) disengages from the mounting groove (221).

4. The gearbox shifting module according to claim 1, characterized in that, The shift fork (21) disposed on the shift shaft (2) is the main gearbox shift fork, and the shift actuator further includes: The front auxiliary gearbox shift cylinder (41) includes a front auxiliary gearbox shift cylinder fixed end (411) for fixedly mounted on the housing (10) and a front auxiliary gearbox shift cylinder telescopic shaft (412) capable of reciprocating relative to the front auxiliary gearbox shift cylinder fixed end (411) in a first direction. The front auxiliary gearbox shift fork (42) is fixedly mounted on the telescopic shaft (412) of the front auxiliary gearbox shift cylinder.

5. The gearbox shifting module according to claim 1, characterized in that, The shift fork (21) disposed on the shift shaft (2) is the main gearbox shift fork, and the shift actuator further includes: The rear auxiliary gearbox shift cylinder (51) includes a rear auxiliary gearbox shift cylinder fixed end (511) for fixedly mounted on the housing (10) and a rear auxiliary gearbox shift cylinder telescopic shaft (512) capable of reciprocating relative to the rear auxiliary gearbox shift cylinder fixed end (511) in a first direction. The rear auxiliary gearbox shift fork is fixedly mounted on the telescopic shaft (512) of the rear auxiliary gearbox shift cylinder.

6. The gearbox shifting module according to any one of claims 1-5, characterized in that, The gearbox shift module also includes a shift control device, which includes a gas input pipe (100), a gas discharge pipe (200), and a shift cylinder control valve group (300). The gas input pipe (100) is used to connect to a high-pressure gas source. The inner cavity of the shift cylinder (1) is provided with a shift cylinder piston connected to the shift cylinder telescopic shaft (12). The shift cylinder piston divides the inner cavity of the shift cylinder (1) into a first cavity and a second cavity. The shift cylinder control valve group (300) is used to connect the inner cavity of the gas input pipe (100) to the first cavity and the inner cavity of the gas discharge pipe (200) to the second cavity, or to connect the inner cavity of the gas input pipe (100) to the second cavity and the inner cavity of the gas discharge pipe (200) to the first cavity.

7. The gearbox shifting module according to claim 6, characterized in that, The shift cylinder control valve assembly (300) includes a first shift cylinder control valve (310) and a second shift cylinder control valve (320). The first shift cylinder control valve (310) is used to connect the first chamber to the inner chamber of the gas input pipeline (100) or to the inner chamber of the gas discharge pipeline (200). The second shift cylinder control valve (320) is used to connect the second chamber to the inner chamber of the gas input pipeline (100) or to the inner chamber of the gas discharge pipeline (200).

8. The gearbox shifting module according to claim 6, characterized in that, The shifting actuator further includes an axle brake cylinder (400), and the shifting control device further includes an axle brake cylinder control valve group (410). The axle brake cylinder control valve group (410) is used to connect the rodless chamber of the axle brake cylinder (400) with the inner cavity of the gas input pipeline (100) or with the inner cavity of the gas discharge pipeline (200).

9. The gearbox shifting module according to claim 6, characterized in that, The shift control device also includes two pressure regulating valves (500) disposed in the gas input pipeline (100). The input ends of the two pressure regulating valves (500) are used to connect to a high-pressure gas source, and the output ends of the two pressure regulating valves (500) are connected to the input end of the shift cylinder control valve group (300).

10. A vehicle, characterized in that, The transmission includes the gearbox shift module as described in any one of claims 1-9, and further includes a gearbox body having a housing (10), wherein the shift actuator is disposed in the housing (10).

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