A power shift transmission

Abstract

The application discloses a power gear shifting transmission, and belongs to the technical field of transmission equipment, which comprises two rotating shafts arranged on a frame; a plurality of wheel trains are arranged along the axial length direction of the rotating shafts in sequence, a plurality of gear wheels with different numbers of teeth are arranged on one rotating shaft, and a plurality of gear wheels are arranged on the other rotating shaft; the plurality of gear wheels are meshed with the plurality of gear wheels respectively; a movable wheel is arranged on the rotating shaft provided with the gear wheels and the rotating shaft is provided with a spiral guide groove, the movable wheel is provided with a protrusion matched with the spiral guide groove; an end face ratchet wheel one is fixed with the gear wheels; an end face ratchet wheel two is sleeved on the rotating shaft provided with the gear wheels, and the end face ratchet wheel two is fixed with the movable wheel; a driving member can drive the movable wheel to move so that the teeth of the end face ratchet wheel one are engaged with the teeth of the end face ratchet wheel two; and the two rotating shafts are power input shafts and power output shafts respectively. The transmission can effectively reduce the gear shifting interval time, reduce the power loss during gear shifting, has high transmission efficiency, can realize a plurality of speed outputs, and has a stable gear shifting process.

Description

Technical Field

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

[0002] The transmission is a core component of the power transmission system, widely used in engineering machinery, transportation, general machinery, and many other fields. By changing the gear ratio, it adjusts the speed and torque matching between power input and output, achieving flexible adaptation to equipment operating conditions. Existing transmissions are mainly divided into two categories: manual transmissions and automatic transmissions. Each type of transmission has certain technical shortcomings in practical applications, making it difficult to simultaneously meet the demands for structural simplicity, transmission efficiency, shifting stability, and functional versatility.

[0003] Most existing manual transmissions employ sliding gears or synchronizers for shifting, resulting in complex overall structures, numerous components, and a susceptibility to issues such as power interruption, incomplete gear engagement, and gear skipping during shifting, leading to poor transmission stability. Furthermore, existing shift drive mechanisms largely utilize purely mechanical actuation or a single hydraulic drive. Mechanical actuation mechanisms suffer from low stroke control precision, while hydraulic drive mechanisms exhibit slow response speeds, high latency, and susceptibility to leaks and blockages in hydraulic lines, further impacting the transmission efficiency and operational stability of the gearbox.

[0004] Therefore, how to provide a power shift transmission that can overcome the above problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides a power shift transmission, comprising: The frame has two parallel rotating shafts that provide rotational support. The gear train consists of multiple sets arranged sequentially along the axial length of the shaft. Each gear train includes one gear 1, one gear 2, and a shifting mechanism. Gear 1 is coaxially rotatably mounted on one shaft, while gear 2 is coaxially fixedly mounted on another shaft. Gear 1 and gear 2 in the same gear train mesh. The number of teeth on each gear 1 is different. The shifting mechanism includes a movable wheel, a ratchet wheel 1, a ratchet wheel 2, and a drive component. The movable wheel has a hole and is coaxially mounted on the shaft containing gear 1. The upper coaxial part is provided with a spiral guide groove, and the movable wheel is provided with a protrusion adapted to the spiral guide groove. The protrusion is slidably embedded in the spiral guide groove. The end face ratchet one is opened and sleeved on a rotating shaft equipped with gear one. The end face ratchet one and gear one are coaxially fixed. The end face ratchet two is opened and sleeved on a rotating shaft equipped with gear one. The end face ratchet two and movable wheel are coaxially fixed. The driving component is connected to the frame. The driving component in the same gear train can drive the movable wheel to move along the axial length of the rotating shaft so that the teeth of the end face ratchet one and the teeth of the end face ratchet two mesh. One shaft is the power input shaft, and the other shaft is the power output shaft.

[0006] Preferably, multiple retaining rings are coaxially fixed on the rotating shaft equipped with gear one, and gear one is arranged between every two adjacent retaining rings along the length direction of the rotating shaft. Gear one abuts against the retaining ring, and a retaining ring is arranged on the inner side of the end face ratchet one.

[0007] Preferably, the shifting component also includes a limiting component and a spring. The limiting component is rotatably mounted on the rotating shaft on which the first gear is mounted, and the spring is fitted on the rotating shaft on which the first gear is mounted. The movable wheel and the limiting component in the same shifting component abut against the two ends of the spring, respectively.

[0008] Preferably, the driving component includes an electromagnet, a connector, and a permanent magnet. The electromagnet is fixed to the frame via the connector; the permanent magnet is fixed to the movable wheel; the end-face ratchet 1, end-face ratchet 2, movable wheel, permanent magnet, spring, limiting component, and electromagnet in the same shifting component are arranged sequentially along the axial direction of the rotating shaft; the electromagnet in the same shifting component can magnetically attract the permanent magnet to make the teeth of end-face ratchet 2 move along the axial direction of the rotating shaft and disengage from the teeth of end-face ratchet 1; the electromagnet in the same shifting component can magnetically repel the permanent magnet to make the teeth of end-face ratchet 2 move along the axial direction of the rotating shaft and engage with the teeth of end-face ratchet 1.

[0009] Preferably, the shifting component also includes a splitting gear and a motor. The movable wheel is a spur gear, the axis of the splitting gear is parallel to the axis of the rotating shaft, and the splitting gear meshes with the movable wheel. The motor is fixed on the frame, and the splitting gear is coaxially fixed with the output shaft of the motor.

[0010] Preferably, the tooth width of the splitting gear is greater than the tooth width of the movable gear so that the splitting gear and the movable gear always maintain meshing.

[0011] Preferably, it also includes gear three, gear four, and a connecting shaft. Gear three is coaxially fixed with the rotating shaft on which gear two is mounted, and gear four meshes with gear three. The connecting shaft is rotatably mounted on the frame and is coaxially fixed with gear four.

[0012] Preferably, the connecting shaft is an auxiliary power input shaft, and the connecting shaft is connected to the rotation output end of an external auxiliary power source.

[0013] Preferably, the connecting shaft is an auxiliary power output shaft.

[0014] The advantages and positive effects of the power shift transmission described in this invention are: 1. The transmission structure of this application is simple and has high shifting efficiency, which can effectively reduce shifting interval time, reduce power loss during shifting, have high transmission efficiency and can achieve multiple speed outputs, and the shifting process is stable.

[0015] 2. The driving component drives the second end face ratchet to move, so that the teeth of the first end face ratchet mesh with the teeth of the second end face ratchet, thereby realizing the power engagement between the corresponding gear one and the rotating shaft, thus achieving the output of the target speed; the power engagement between the first end face ratchet and the second end face ratchet is stable.

[0016] 3. By designing limiting components and springs, this design can limit the travel of the second end face ratchet, and at the same time assist the teeth of the first end face ratchet in meshing with the teeth of the second end face ratchet.

[0017] 4. The driving components include an electromagnet and a permanent magnet. The electromagnet is connected to current in both directions, thereby enabling the teeth of end face ratchet one to engage or disengage with the teeth of end face ratchet two.

[0018] 5. By designing a spiral guide groove, protrusions, splitting gears, and a motor, this design can assist in separating the teeth of end face ratchet one from the teeth of end face ratchet two. The above design, together with an electromagnet, limiting parts, and springs, further ensures that end face ratchet two moves smoothly along the axis of rotation and maintains the state of power engagement or power disengagement.

[0019] 6. By designing gear three, gear four, and connecting shaft, the transmission can have an interface for auxiliary power source input or an additional power output end. Attached Figure Description

[0020] Figure 1 For the overall isometric projection of the present invention Figure 1 ; Figure 2 For the overall isometric projection of the present invention Figure 2 ; Figure 3 This is the front view of the present invention; Figure 4 For the partial isometric projection of the present invention Figure 1 ; Figure 5 For the partial isometric projection of the present invention Figure 2 ; Figure 6 This is a partial front view of the present invention; Figure 7 This is a partial schematic diagram of the end face ratchet one and end face ratchet two disengaging from the power engagement in this invention.

[0021] Figure Labels 1. Frame; 2. Shaft; 3. Gear 1; 4. Gear 2; 5. Sliding wheel; 6. End face ratchet 1; 7. End face ratchet 2; 8. Drive component; 9. Limiting component; 10. Spring; 11. Electromagnet; 12. Connecting component; 13. Permanent magnet; 14. Splitting gear; 15. Motor; 16. Retaining ring; 17. Gear 3; 18. Gear 4; 19. Connecting shaft; 20. Spiral guide groove; 21. Protrusion. Detailed Implementation

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, 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 invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication 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.

[0023] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0024] See appendix Figure 1-7 This is a schematic diagram of the overall and partial structure of one embodiment of the present invention. Specifically, the present invention discloses a power shift transmission, comprising: The frame 1 has two parallel rotating shafts 2 that are rotatably supported on it. That is, the rotating shafts 2 can rotate relative to the frame 1 and the rotation axis coincides with their own axis.

[0025] The gear train consists of multiple sets arranged sequentially along the axial length of shaft 2. In this embodiment, there are three sets of gear trains, each corresponding to three different speed outputs. Each gear train includes a first gear 3, a second gear 4, and a shifting mechanism. Gear 3 is coaxially mounted on one shaft 2, meaning it can rotate relative to the shaft 2. The axis of rotation of gear 3 around shaft 2 coincides with its own axis. Gear 4 is fixedly mounted coaxially on another shaft 2, meaning it cannot rotate relative to the shaft 2; the two are rigidly connected. Gear 3 and gear 4 mesh within the same gear train. The number of teeth on each of the multiple first gears 3 is different, and correspondingly, the number of teeth on each of the multiple second gears 4 is also different.

[0026] The shifting component includes a movable wheel 5, a first end ratchet 6, a second end ratchet 7, and a driving component 8. The movable wheel 5 has an opening and is coaxially mounted on a rotating shaft 2 equipped with a first gear 3, meaning the movable wheel 5 and the rotating shaft 2 equipped with the first gear 3 can rotate relative to each other. The movable wheel 5 rotates around the rotating shaft 2 equipped with the first gear 3, and the axis of rotation coincides with its own axis. A spiral guide groove 20 is coaxially provided on the rotating shaft 2 equipped with the first gear 3. Multiple spiral guide grooves 20 are provided and evenly arranged along the circumference of the rotating shaft 2 equipped with the first gear 3. The movable wheel 5 has protrusions 21 adapted to the spiral guide grooves 20. Multiple protrusions 21 are provided, and each protrusion 21 is slidably embedded in multiple spiral guide grooves 20. To facilitate the assembly of the movable wheel 5, the protrusions 21 and the movable wheel 5 are fixed by welding, bolting, or snap-fitting. In this embodiment, the protrusions 21 and the movable wheel 5 are fixed by welding. During assembly, the movable wheel 5 (without protrusion 21) is first fitted onto the rotating shaft 2. Then, the protrusion 21 is positioned in the corresponding spiral guide groove 20. After the protrusion 21 is in place, the movable wheel 5 is moved axially along the rotating shaft 2 until it aligns with the protrusion 21 previously positioned in the spiral guide groove 20. Finally, the movable wheel 5 and the protrusion 21 are fixed. The helix angle of the spiral guide groove 20 is greater than the equivalent friction angle, meaning that there is no self-locking between the movable wheel 5 and the rotating shaft 2 equipped with gear 3. When the movable wheel 5 is pushed axially along the rotating shaft 2, it both rotates and moves along the axial length of the rotating shaft 2. The end-face ratchet 6 is perforated and fitted onto one of the rotating shafts 2 equipped with gear 3. The end-face ratchet 6 and gear 3 are coaxially fixed. A second end-face ratchet 7 is perforated and fitted onto a rotating shaft 2 equipped with a first gear 3. The second end-face ratchet 7 is coaxially fixed with the movable wheel 5, and rotates synchronously with the movable wheel 5. A drive unit 8 is connected to the frame 1. The drive unit 8 in the same gear train can drive the movable wheel 5 to move along the axial length of the rotating shaft 2 so that the teeth of the first end-face ratchet 6 mesh with the teeth of the second end-face ratchet 7. When the teeth of the first end-face ratchet 6 mesh with the teeth of the second end-face ratchet 7, the movable wheel 5 and the first gear 3 corresponding to the first end-face ratchet 6 and the second end-face ratchet 7, respectively, are electrically engaged, thereby achieving the electrical engagement of the two rotating shafts 2.

[0027] Of the two rotating shafts 2, one rotating shaft 2 is a power input shaft and is connected to an external power source for transmission, while the other rotating shaft 2 is a power output shaft and is connected to an external load for transmission. That is, the rotating shaft 2 equipped with gear 1 3 is the power input shaft, and the rotating shaft 2 equipped with gear 2 4 is the power output shaft; or, the rotating shaft 2 equipped with gear 1 3 is the power output shaft, and the rotating shaft 2 equipped with gear 2 4 is the power input shaft.

[0028] More specifically, multiple retaining rings 16 are coaxially fixed on the rotating shaft 2, which houses the gear 3. A gear 3 is arranged between every two adjacent retaining rings 16 along the length of the rotating shaft 2. The gear 3 abuts against the retaining ring 16, and the retaining ring 16 axially limits the gear 3, preventing it from moving axially along the rotating shaft 2 when the end face ratchet 6 and end face ratchet 7 are in contact. The retaining ring 16 is arranged inside the end face ratchet 6, and it does not affect the meshing of the teeth of the end face ratchet 6 and the end face ratchet 7. To facilitate the installation of the gear 3, in this embodiment, the retaining ring 16 is fixed to the rotating shaft 2 by welding; that is, the retaining ring 16 and the gear 3 are first fitted onto the rotating shaft 2, and then the retaining ring 16 is fixed to the rotating shaft 2.

[0029] More specifically, the shifting component also includes a limiting member 9 and a spring 10. The limiting member 9 is rotatably mounted on the rotating shaft 2 equipped with gear 3, meaning that the limiting member 9 and the rotating shaft 2 equipped with gear 3 can rotate relative to each other. At the same time, the limiting member 9 cannot move along the axial length of the rotating shaft 2. The spring 10 is fitted onto the rotating shaft 2 equipped with gear 3. The movable wheel 5 and the limiting member 9 in the same shifting component elastically abut against both ends of the spring 10. During the process of the teeth of the end face ratchet 7 disengaging from the teeth of the end face ratchet 6, the end face ratchet 7 will move and rotate along the axial length of the rotating shaft 2. The end face ratchet 7 in the same shifting component will move closer to the limiting member 9, at which time the spring 10 is compressed.

[0030] Since the limiting member 9 is rotatably connected to the rotating shaft 2 equipped with gear 3, when the end face ratchet 7 moves and compresses the spring 10, no sliding friction occurs between the limiting member 9 and the spring 10, or between the end face ratchet 7 and the spring 10. This ensures smooth movement of the end face ratchet 7 while preventing wear on the end face ratchet 7, the spring 10, and the limiting member 9. In addition, the design of the limiting member 9 and the spring 10 also ensures that when the teeth of the end face ratchet 7 need to mesh with the teeth of the end face ratchet 6, the end face ratchet 7 can move quickly and smoothly along the axial direction of the rotating shaft 2; and the limiting member 9 and the spring 10 can also axially limit the end face ratchet 7, restricting its axial movement along the rotating shaft 2.

[0031] More specifically, the driving component 8 includes an electromagnet 11, a connector 12, and a permanent magnet 13. The electromagnet 11 is fixed to the frame 1 via the connector 12, meaning the electromagnet 11 is fixed to the frame 1 and will not rotate with the rotating shaft 2. The electromagnet 11 can carry currents in opposite directions to achieve its magnetic pole reversal. The permanent magnet 13 is ring-shaped and coaxially fixed to the movable wheel 5. The attraction end of the electromagnet 11 is directly opposite to the axial position of the permanent magnet 13 along the rotating shaft 2. In the same shifting component, the end-face ratchet 1 6, the end-face ratchet 2 7, the movable wheel 5, the permanent magnet 13, the spring 10, the limiting component 9, and the electromagnet 11 are arranged sequentially along the axial direction of the rotating shaft 2.

[0032] In the same shifting component, the electromagnet 11 carrying a positive current can magnetically attract the permanent magnet 13, thereby causing the end face ratchet 2 7 to move away from the end face ratchet 6 along the axis of the rotating shaft 2, thereby disengaging the teeth of the end face ratchet 2 7 from the teeth of the end face ratchet 6, and disconnecting the corresponding gear 3 from the movable wheel 5.

[0033] In the same shifting component, the electromagnet 11 carrying the reverse current can magnetically repel the permanent magnet 13, thereby driving the end face ratchet 2 7 to move along the axis of the rotating shaft 2 towards the end face ratchet 6, thereby realizing the meshing of the teeth of the end face ratchet 2 7 with the teeth of the end face ratchet 6, and the corresponding gear 3 and the movable wheel 5 are powered together.

[0034] More specifically, the shifting component also includes a splitting gear 14 and a motor 15. In this application, the movable wheel 5 is a spur gear. The axis of the splitting gear 14 is parallel to the axis of the rotating shaft 2, and the splitting gear 14 meshes with the movable wheel 5. The motor 15 is fixed to the frame 1, and the output shaft of the splitting gear 14 and the motor 15 are coaxially fixed. The motor 15 in this application does not have a reduction mechanism; that is, when the motor 15 is de-energized, its output shaft can rotate freely. The tooth width of the splitting gear 14 is greater than the tooth width of the movable wheel 5. The maximum stroke of the movable wheel 5 along the axial direction of the rotating shaft 2 is less than the difference between the tooth widths of the splitting gear 14 and the movable wheel 5. Regardless of how the movable wheel 5 moves along the axial direction of the rotating shaft 2, the splitting gear 14 and the movable wheel 5 always remain meshed.

[0035] Alternatively, a clutch (not shown in the figure) can be installed between the output shaft of the motor 15 and the engagement / disengagement gear 14. When the motor 15 is powered on and rotates in the forward direction, the clutch engages, and the motor 15 can drive the engagement / disengagement gear 14 to rotate smoothly. Conversely, when the motor 15 is powered off and the movable wheel 5 drives the engagement / disengagement gear 14 to rotate in the reverse direction, the clutch disengages, meaning that the engagement / disengagement gear 14 will not drive the output shaft of the motor 15 to rotate when it rotates in the reverse direction, thus preventing the output shaft of the motor 15 from rotating after the power is off.

[0036] In this application, the rotating shaft 2 equipped with gear 3 rotates clockwise, and correspondingly, the rotating shaft 2 equipped with gear 4 can rotate counterclockwise. When the motor 15 is energized, it can drive the disengaging gear 14 to rotate clockwise, and correspondingly, the movable wheel 5 rotates counterclockwise relative to the rotating shaft 2. The movable wheel 5 rotates in the opposite direction to the rotating shaft 2 equipped with gear 3.

[0037] When the motor 15 in the same gear train is energized, due to the spiral guide groove 20 and the protrusion 21, the movable wheel 5 and the end face ratchet 2 7 will move away from the end face ratchet 6 along the axial direction of the rotating shaft 2, that is, the movable wheel 5 moves closer to the limiting member 9, and the spring 10 is compressed.

[0038] When the motor 15 is not powered and the electromagnet 11 continuously carries a reverse current, the electromagnet 11 pushes the permanent magnet 13, the movable wheel 5 and the end face ratchet 7 to move towards the end face ratchet 6. That is, the movable wheel 5 in the same gear train moves closer to the gear 3, and the teeth of the end face ratchet 6 mesh with the teeth of the end face ratchet 7 and maintain the meshing state.

[0039] When the motor 15 is energized for a certain period of time and the electromagnet 11 continues to carry a positive current, the permanent magnet 13, the movable wheel 5, and the end face ratchet 2 7 move away from the end face ratchet 1 6. That is, the movable wheel 5 in the same gear train moves closer to the limiting member 9, the spring 10 is compressed, and the teeth of the end face ratchet 1 6 disengage from the teeth of the end face ratchet 2 7 and remain in a disengaged state.

[0040] The splitting gear 14 and the motor 15 serve to assist in separating the end face ratchet 1 6 and the end face ratchet 2 7.

[0041] More specifically, it also includes gear three 17, gear four 18, and connecting shaft 19. Gear three 17 is coaxially fixed with the rotating shaft 2 on which gear two 4 is mounted, and gear four 18 meshes with gear three 17. Connecting shaft 19 is rotatably mounted on frame 1, and connecting shaft 19 is coaxially fixed with gear four 18.

[0042] There are two cases for connecting shaft 19: In one configuration, connecting shaft 19 serves as the auxiliary power input shaft. In this case, the number of teeth on gear three 17 is greater than or equal to the number of teeth on gear four 18. Connecting shaft 19 is connected to the rotational output end of an external auxiliary power source, which can be an electric motor, hydraulic motor, or pneumatic motor. The rotational output end of the external auxiliary power source is connected to one end of a clutch (not shown in the figure), and the other end of the clutch is connected to connecting shaft 19. When the transmission requires high torque output, the external auxiliary power source and the clutch engage, and the external auxiliary power source and connecting shaft 19 are connected via the clutch, thus providing torque supplementation.

[0043] Another type is where the connecting shaft 19 is an auxiliary power output shaft, meaning the transmission has an additional power output shaft. In this case, the number of teeth on gear 3 17 is less than or equal to the number of teeth on gear 4 18.

[0044] More specifically, this application can also include a reversible gear train (not shown in the figure). In addition to the gear 3, gear 4, and shifting components described above, the reversible gear train also includes an intermediate gear and an intermediate shaft. The intermediate gear and intermediate shaft are coaxially fixed, and the intermediate shaft is rotatably mounted on the frame 1. Gear 3 in the reversible gear train meshes with the intermediate gear, and gear 4 in the reversible gear train meshes with the intermediate gear. Gear 3 in the reversible gear train does not mesh with gear 4. The reversible gear train enables a rotating shaft 2 fixed to gear 4 to reverse direction. The above-mentioned reversible gear train is installed inside the transmission. Alternatively, the reversible gear train can also be installed separately outside the transmission, i.e., the rotating shaft 2 fixed to gear 4 is connected to the input power of an external reversible gear train.

[0045] This application, when running: In neutral, electromagnet 11 continuously carries a positive current, the motor is de-energized, the teeth of end face ratchet 6 and end face ratchet 7 are disengaged, the engine drives the shaft 2 equipped with gear 3 to rotate freely, and the shaft 2, which is fixed coaxially with gear 4, has no torque output.

[0046] When shifting gears, one of the multiple gear trains operates. Electromagnet 11 in this gear train starts to continuously carry a reverse current, motor 15 is de-energized, and electromagnet 11 pushes end face ratchet 2 7 closer to end face ratchet 6, so that the teeth of end face ratchet 6 mesh with the teeth of end face ratchet 2 7, thereby realizing the power engagement between gear 3 and shaft 2 in this gear train. Shaft 2, which is coaxially fixed with gear 4, realizes torque output.

[0047] During gear shifting, the motor 15 in the working gear train is energized for a period of time, and the electromagnet 11 continuously carries a positive current. The movable wheel 5 moves closer to the limiting member 9, causing the teeth of end face ratchet 6 to disengage from the teeth of end face ratchet 7. At the same time, the electromagnet 11 in the gear train to be worked continuously carries a reverse current, the motor 15 is de-energized, and the electromagnet 11 pushes end face ratchet 7 closer to end face ratchet 6, causing the teeth of end face ratchet 6 to engage with the teeth of end face ratchet 7, thereby achieving gear shifting.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A power shift transmission, characterized in that, include: The frame (1) has two parallel rotating shafts (2) on the frame (1). The gear train consists of multiple sets arranged sequentially along the axial length of the shaft (2). Each gear train includes a gear 1 (3), a gear 2 (4), and a shifting component. Gear 1 (3) is coaxially mounted on one shaft (2), and gear 2 (4) is coaxially fixed on another shaft (2). Gear 1 (3) and gear 2 (4) in the same gear train mesh. The number of teeth of the multiple gear 1 (3) is different. The shifting component includes a movable wheel (5), a ratchet wheel 1 (6), a ratchet wheel 2 (7), and a drive component (8). The movable wheel (5) is perforated and coaxially mounted on a shaft (2) containing gear 1 (3). A spiral guide is coaxially mounted on a shaft (2) containing gear 1 (3). The groove (20) and the movable wheel (5) are provided with a protrusion (21) that is adapted to the spiral guide groove (20). The protrusion (21) is slidably embedded in the spiral guide groove (20). The end face ratchet one (6) is opened and sleeved on a rotating shaft (2) equipped with gear one (3). The end face ratchet one (6) and gear one (3) are fixed coaxially. The end face ratchet two (7) is opened and sleeved on a rotating shaft (2) equipped with gear one (3). The end face ratchet two (7) and the movable wheel (5) are fixed coaxially. The driving component (8) is connected to the frame (1). The driving component (8) in the same gear system can drive the movable wheel (5) to move along the axial length direction of the rotating shaft (2) so that the teeth of the end face ratchet one (6) and the teeth of the end face ratchet two (7) mesh. One shaft (2) is the power input shaft, and the other shaft (2) is the power output shaft.

2. The power shift transmission according to claim 1, characterized in that, Multiple retaining rings (16) are coaxially fixed on the rotating shaft (2) equipped with gear 1 (3). A gear 1 (3) is arranged between every two adjacent retaining rings (16) along the length direction of the rotating shaft (2). Gear 1 (3) abuts against the retaining ring (16). A retaining ring (16) is arranged on the inner side of the end face ratchet 1 (6).

3. A power shift transmission according to claim 1, characterized in that, The shifting component also includes a limiting component (9) and a spring (10). The limiting component (9) is rotatably mounted on the rotating shaft (2) on which the first gear (3) is mounted. The spring (10) is fitted on the rotating shaft (2) on which the first gear (3) is mounted. The movable wheel (5) and the limiting component (9) in the same shifting component abut against the two ends of the spring (10).

4. A power shift transmission according to claim 3, characterized in that, The drive unit (8) includes an electromagnet (11), a connector (12), and a permanent magnet (13). The electromagnet (11) is fixed to the frame (1) through the connector (12). The permanent magnet (13) is fixed on the movable wheel (5). The end face ratchet 1 (6), end face ratchet 2 (7), movable wheel (5), permanent magnet (13), spring (10), limiter (9), and electromagnet (11) in the same shifting component are arranged sequentially along the axis of the rotating shaft (2). The electromagnet (11) in the same shifting component can magnetically attract the permanent magnet (13) so that the teeth of the end face ratchet 2 (7) can move along the axis of the rotating shaft (2) and disengage from the teeth of the end face ratchet 1 (6). The electromagnet (11) in the same shifting component can magnetically repel the permanent magnet (13) so that the teeth of the end face ratchet 2 (7) can move along the axis of the rotating shaft (2) and engage with the teeth of the end face ratchet 1 (6).

5. A power shift transmission according to claim 4, characterized in that, The shifting component also includes a splitting gear (14) and a motor (15). The movable wheel (5) is a spur gear. The axis of the splitting gear (14) is parallel to the axis of the rotating shaft (2). The splitting gear (14) meshes with the movable wheel (5). The motor (15) is fixed on the frame (1). The output shaft of the splitting gear (14) and the motor (15) are coaxially fixed.

6. A power shift transmission according to claim 5, characterized in that, The tooth width of the split gear (14) is greater than that of the movable wheel (5) so that the split gear (14) and the movable wheel (5) always maintain meshing.

7. A power shift transmission according to claim 1, characterized in that, It also includes gear three (17), gear four (18) and connecting shaft (19). Gear three (17) is coaxially fixed with the rotating shaft (2) on which gear two (4) is mounted. Gear four (18) meshes with gear three (17). Connecting shaft (19) is rotatably mounted on frame (1). Connecting shaft (19) is coaxially fixed with gear four (18).

8. A power shift transmission according to claim 7, characterized in that, The connecting shaft (19) is an auxiliary power input shaft, and the connecting shaft (19) is connected to the rotation output end of the external auxiliary power source.

9. A power shift transmission according to claim 7, characterized in that, The connecting shaft (19) is an auxiliary power output shaft.

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