A power take-off reverse gear for a three-wheeled motorcycle

Abstract

A power take-off reverse gear for a three-wheeled motorcycle, comprising a housing. Inside the housing, there is a shifting mechanism for driving the rotation of the shaft of the three-wheeled motorcycle. An input interface is provided on the housing. The output end of the engine of the three-wheeled motorcycle transmits power to the shifting mechanism of the reverse gear through the input interface. An installation cavity is further provided inside the housing, and a power take-off mechanism is arranged in the installation cavity. One end of the shaft is inserted into the installation cavity and connected to the power take-off mechanism. The power take-off mechanism is used for taking power and delivering the power to the outside.

Description

Technical Field

[0001] The present invention relates to the technical field of reverse gears, and particularly to a power take-off reverse gear for a three-wheeled motorcycle. Background Art

[0002] In order to make three-wheeled motorcycles more versatile, a common method is to attach a power take-off device to the gearbox and then transmit the power to external equipment to provide power for external equipment (such as oil pumps, water pumps, threshing machines, etc.).

[0003] Figure 1 —3 are schematic structural diagrams of the power take-off methods of existing three-wheeled motorcycles. As Figure 1 shown, the engine 22 transmits power to the reverse gear device 23, the reverse gear device 23 transmits power to the transmission shaft 24, and the transmission shaft 24 transmits power to the rear axle 26. To facilitate power take-off, a power take-off gearbox 25 is provided between the reverse gear device 23 and the rear axle 26, and a power take-off interface 30 is provided on the gearbox; as Figure 2 shown, a power take-off interface 30 is added between the reverse gear device 23 and the rear axle 26 of the three-wheeled motorcycle; as Figure 3 shown, a power take-off interface 30 is provided on the rear axle 26 (auxiliary power rear axle 29) of the three-wheeled motorcycle to provide power for external equipment; however, the existing three methods for realizing the power take-off function of the whole vehicle have disadvantages such as high cost, the whole vehicle being too long and exceeding the standard, inconvenient maintenance, and heavy unsprung mass of the whole vehicle. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a power take-off reverse gear for a three-wheeled motorcycle, which solves the problems of high production cost, the whole vehicle being too long and exceeding the standard, inconvenient maintenance, and heavy unsprung mass of the whole vehicle in the power take-off method of existing three-wheeled motorcycles.

[0005] According to an embodiment of the present invention, a power take-off reverse gear for a three-wheeled motorcycle includes a housing. Inside the housing, a shifting mechanism for driving the rotation of the rotating shaft of the three-wheeled motorcycle is provided. An input interface is opened on the housing. The output end of the engine of the three-wheeled motorcycle transmits power to the shifting mechanism of the reverse gear through the input interface. An installation cavity is further provided inside the housing, and a power take-off mechanism is provided in the installation cavity. One end of the rotating shaft is inserted into the installation cavity and connected to the power take-off mechanism. The power take-off mechanism is used for taking power and delivering the power to the outside.

[0006] Furthermore, the power take-off mechanism includes: a first bevel gear, a second bevel gear, a transmission gear, a connecting sleeve, a power take-off output shaft, a power output shaft and a toggle assembly, the first bevel gear is rotatably arranged on one end of the rotating shaft located in the installation cavity, the transmission gear is slidably arranged on one end of the rotating shaft located in the installation cavity, the transmission gear cannot be separated from the rotating shaft and the transmission gear cannot rotate relative to the rotating shaft, the power output shaft is inserted into the installation cavity from the side of the shell away from the rotating shaft, the power output shaft is coaxially arranged with the rotating shaft, a connecting sleeve is fixedly arranged on one end of the power output shaft located in the installation cavity, an internal spline is arranged in the connecting sleeve, the transmission gear can be spline-connected with the connecting sleeve, a toggle assembly for driving the transmission gear to slide on the rotating shaft and engage or disengage with the first bevel gear is arranged on the side wall of the installation cavity, the toggle assembly is also used to drive the transmission gear to slide on the rotating shaft and connect or disengage with the connecting sleeve spline, a second bevel gear meshing with the first bevel gear is rotatably arranged on the side wall of the installation cavity through the power take-off output shaft, and the second bevel gear is fixedly connected to the power take-off output shaft.

[0007] Furthermore, the toggle assembly includes: a mounting seat, a toggle block and a pressing piece, the mounting seat is rotatably arranged in the mounting cavity through a mounting shaft, the toggle block is arranged on a side of the mounting seat close to the transmission gear, the transmission gear is provided with a toggle groove surrounding it, the pressing piece is arranged on the side wall of the mounting cavity, the pressing piece is used to press the toggle block in the toggle groove, and the toggle block is used to push the transmission gear to slide on the rotating shaft.

[0008] As an embodiment, the power take-off mechanism includes: a first gear, a second gear, a third gear, a transmission gear, a connecting sleeve, a power take-off output shaft, a power output shaft and a toggle assembly, the first gear is rotatably arranged on one end of the rotating shaft located in the installation cavity, one end of the power output shaft is inserted into the installation cavity from the end of the shell away from the rotating shaft, the power output shaft is coaxially arranged with the rotating shaft, one end of the rotating shaft is inserted into the power output shaft, the rotating shaft is rotatably connected with the power output shaft, the connecting sleeve is fixedly sleeved on the rotating shaft, the connecting sleeve is located between the first gear and the power output shaft, and the transmission gear is slidably arranged on the connecting sleeve The transmission gear cannot rotate relative to the connecting sleeve and cannot be separated from the rotating shaft. A toggle assembly is provided on the side wall of the installation cavity, which is used to drive the transmission gear to slide on the connecting sleeve and be spline-connected or separated from the first gear. The toggle assembly is also used to drive the transmission gear to slide on the connecting sleeve and be spline-connected or separated from the power output shaft. The third gear is rotatably arranged in the installation cavity through the power take-off output shaft. The power take-off output shaft is fixedly connected to the third gear. One end of the power take-off output shaft extends out of the shell. A second gear is provided between the first gear and the third gear, and the second gear is respectively meshed with the first gear and the third gear.

[0009] Furthermore, the toggle assembly includes: a mounting seat, a toggle block and a pressing piece, the mounting seat is rotatably arranged in the mounting cavity through a mounting shaft, the toggle block is arranged on a side of the mounting seat close to the transmission gear, the transmission gear is provided with a toggle groove surrounding it, the pressing piece is arranged on the side wall of the mounting cavity, the pressing piece is used to press the toggle block in the toggle groove, and the toggle block is used to push the transmission gear to slide on the connecting sleeve.

[0010] Furthermore, the clamping member includes: a spring and a clamping block, the spring is horizontally arranged on the side wall of the installation cavity, the clamping block is arranged on the end of the spring, two clamping grooves are opened on the side of the installation seat close to the clamping block, the clamping block is inserted into the clamping groove under the elastic force of the spring, one end of the installation shaft passes through the outside of the shell, and an operating handle is arranged on the end of the installation shaft located outside the shell.

[0011] As another embodiment, the output end of the engine is spline-connected to one end of an input shaft, and the other end of the input shaft drives the fifth bevel gear of the shift mechanism to rotate, and the fifth bevel gear transmits power to the third bevel gear and the fourth bevel gear of the shift mechanism, and the fifth bevel gear is respectively meshed with the third bevel gear and the fourth bevel gear, and the power take-off mechanism includes: a first gear, a second gear, a third gear, a power take-off output shaft and a toggle assembly, the first gear is fixed to one side of the third bevel gear, the third bevel gear is used to drive the first gear to rotate, and the third gear is rotatably arranged in the mounting cavity through the power take-off output shaft, the third gear is spline-connected to the power take-off output shaft, and the power take-off output shaft is fixedly connected to the third gear, and one end of the power take-off output shaft extends out of the housing, and a second gear is arranged between the first gear and the third gear, and the second gear is respectively meshed with the first gear and the third gear, and a toggle assembly for pushing the third gear to slide on the power take-off output shaft and to engage or disengage with the second gear is arranged in the mounting cavity.

[0012] Furthermore, the shift assembly includes: a shift fork shaft, a rocker arm and a driving rod, the shift fork shaft is slidably arranged in the installation cavity, one end of the shift fork shaft passes through the installation cavity, the rocker arm is rotatably arranged on the shell through the installation rod, the shift fork shaft is provided with a shift hole for inserting the rocker arm, the rocker arm is used to push the shift fork shaft to slide in the installation cavity, a driving rod is provided on the side wall of the shift fork shaft close to the third gear, and a driving groove is provided on the third gear around the third gear, the driving rod is used to act on the driving groove and push the third gear to slide on the power take-off output shaft and engage or disengage with the second gear.

[0013] The technical principle of the present invention is: when it is necessary to take power to provide power for external equipment (such as oil pumps, water pumps, threshers and other equipment), first, the transmission gear is pushed on the rotating shaft toward the direction of the first bevel gear through the toggle assembly to make the transmission gear mesh with the first bevel gear, and the transmission gear is disengaged from the connecting sleeve. At this time, the power output shaft will no longer transmit power to the rear axle of the three-wheeled motorcycle, so that the vehicle stops. The first bevel gear rotates under the drive of the transmission gear, and the first bevel gear drives the second bevel gear and the power output shaft to rotate, so that the force is transmitted to the outside through the power output shaft to achieve power taking.

[0014] Compared with the prior art, the present invention has the following beneficial effects: power is taken by arranging a power take-off mechanism in the reverse gear of a three-wheeled motorcycle. The power take-off mechanism has a simple structure and is easy to produce. While taking power to provide power for external equipment (such as oil pumps, water pumps, threshers, etc.), the structure of the entire vehicle is compact and the production cost is reduced. The drawback of the prior art that a power take-off needs to be added between the reverse gear and the rear axle of the three-wheeled motorcycle to take power is solved, making the entire vehicle more concise and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the existing power taking method of three-wheeled motorcycle.

[0016] Figure 2 It is a structural schematic diagram of the existing power taking method of three-wheeled motorcycle.

[0017] Figure 3 It is a structural schematic diagram of the existing power taking method of three-wheeled motorcycle.

[0018] Figure 4 The present invention is a structural schematic diagram of the power transmission method of the reverse gear of an existing three-wheeled motorcycle.

[0019] Figure 5 It is a schematic structural diagram of the first embodiment of the present invention.

[0020] Figure 6 for Figure 5 AA section view in.

[0021] Figure 7 This is a schematic diagram of the installation structure of the first embodiment of the present invention.

[0022] Figure 8 It is a schematic structural diagram of the first embodiment of the present invention.

[0023] Figure 9 It is a schematic structural diagram of the first embodiment of the present invention.

[0024] Figure 10 It is a schematic structural diagram of a power take-off mechanism according to a first embodiment of the present invention.

[0025] Figure 11 It is also a schematic structural diagram of the power take-off mechanism of the first embodiment of the present invention.

[0026] Figure 12 It is a schematic structural diagram of the second embodiment of the present invention.

[0027] Figure 13 It is a schematic structural diagram of the third embodiment of the present invention.

[0028] Figure 14 is Figure 13 the D-D sectional view in

[0029] Figure 15 It is a schematic structural diagram of the fourth embodiment of the present invention.

[0030] In the above-mentioned drawings: 1. housing; 2. power take-off output shaft; 3. operating handle; 4. input interface; 5. rotating shaft; 6. installation cavity; 7. first bevel gear; 8. connecting sleeve; 9. transmission gear; 10. second bevel gear; 11. mounting seat; 12. mounting shaft; 13. shifting block; 14. shifting groove; 15. spring; 16. pressing block; 17. pressing groove; 18. power output shaft; 19. third gear; 20. second gear; 21. first gear; 22. engine; 23. reverse gear device; 24. transmission shaft; 25. power take-off gearbox; 26. rear axle; 27. power take-off; 28. power take-off reverse gear; 29. additional power rear axle; 30. power take-off interface; 31. input shaft; 32. fifth bevel gear; 33. third bevel gear; 34. fourth bevel gear; 35. mounting rod; 36. rocker arm; 37. shift fork shaft; 38. shift hole; 39. driving rod; 40. mounting column; 41. shifting part. Detailed Embodiments

[0031] The technical solutions in the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] A power take-off reverse gear for a three-wheeled motorcycle includes a housing 1. Inside the housing 1, a shifting mechanism for driving the rotating shaft 5 of the three-wheeled motorcycle to rotate is provided. An input interface 4 is opened on the housing 1. The output end of the engine 22 of the three-wheeled motorcycle transmits power to the shifting mechanism of the reverse gear through the input interface 4. An installation cavity 6 is also provided inside the housing 1. A power take-off mechanism is provided inside the installation cavity 6. One end of the rotating shaft 5 is inserted into the installation cavity 6 and connected to the power take-off mechanism. The power take-off mechanism is used for taking power and delivering the power to the outside.

[0033] As Figure 5As shown in FIG. 11, as a first embodiment, the power take-off mechanism includes: a first bevel gear 7, a second bevel gear 10, a transmission gear 9, a connecting sleeve 8, a power take-off output shaft 2, a power output shaft 18 and a toggle assembly. The first bevel gear 7 is rotatably arranged on one end of the rotating shaft 5 located in the mounting cavity 6. The transmission gear 9 is slidably arranged on one end of the rotating shaft 5 located in the mounting cavity 6. The transmission gear 9 cannot be separated from the rotating shaft 5 and the transmission gear 9 cannot rotate relative to the rotating shaft 5. The power output shaft 18 is inserted into the mounting cavity 6 from the side of the housing 1 away from the rotating shaft 5. The power output shaft 18 is coaxially arranged with the rotating shaft 5. The power output shaft 18 is fixedly arranged on one end of the rotating shaft 5 located in the mounting cavity 6. There is a connecting sleeve 8. Preferably, the power output shaft 18 is designed to be integrated with the connecting sleeve 8. An internal spline is arranged in the connecting sleeve 8. The transmission gear 9 can be spline-connected with the connecting sleeve 8. A toggle assembly for driving the transmission gear 9 to slide on the rotating shaft 5 and engage or disengage with the first bevel gear 7 is arranged on the side wall of the installation cavity 6. The toggle assembly is also used to drive the transmission gear 9 to slide on the rotating shaft 5 and engage or disengage with the connecting sleeve 8 spline. A second bevel gear 10 meshing with the first bevel gear 7 is rotatably arranged on the side wall of the installation cavity 6 through the power take-off output shaft 2. The second bevel gear 10 is fixedly connected to the power take-off output shaft 2. Preferably, the second bevel gear is designed to be integrated with the power take-off output shaft.

[0034] The toggle assembly includes: a mounting seat 11, a toggle block 13 and a pressing member. The mounting seat 11 is rotatably arranged in the mounting cavity 6 through the mounting shaft 12. The toggle block 13 is arranged on the side of the mounting seat 11 close to the transmission gear 9. The transmission gear 9 is provided with a toggle groove 14 surrounding it. The pressing member is arranged on the side wall of the mounting cavity 6. The pressing member is used to press the toggle block 13 in the toggle groove 14. The toggle block 13 is used to push the transmission gear 9 to slide on the rotating shaft 5. The pressing member includes: a spring 15 and a pressing block 16. The spring 15 is horizontally arranged on the side wall of the mounting cavity 6. The pressing block 16 is arranged on the end of the spring 15. Two pressing grooves 17 are arranged on the side of the mounting seat 11 close to the pressing block 16. The pressing block 16 is inserted into the pressing groove 17 under the elastic force of the spring 15. One end of the mounting shaft 12 passes through the outside of the housing 1. The end of the mounting shaft 12 located outside the housing 1 is provided with an operating handle 3.

[0035] The working principle of this implementation is: when the three-wheeled motorcycle needs to move forward or backward, Figure 4The figure shows the power transmission method of the existing three-wheeled motorcycle reverse gear. The output end of the three-wheeled motorcycle engine 22 is inserted into the input interface 4 and spline-connected with the input shaft 31. The input shaft drives the fifth bevel gear to rotate. The fifth bevel gear 32 drives the third bevel gear 33 and the fourth bevel gear 34 meshing therewith to rotate. A toggle part 41 is provided on the rotating shaft 5. The toggle part 41 can slide on the rotating shaft 5 and the toggle part 41 cannot rotate relative to the rotating shaft 5. The third bevel gear 33 and the fourth bevel gear 34 are rotatably arranged on the rotating shaft 5. The toggle portion 41 has inner teeth, and the toggle portion 41 is provided with outer teeth. The toggle portion 41 can slide on the rotating shaft 5 and mesh with the inner teeth of the third bevel gear 33 or the inner teeth of the fourth bevel gear 34. When the inner teeth of the third bevel gear 33 mesh with the outer teeth on the toggle portion 41, the third bevel gear 33 drives the rotating shaft 5 to rotate through the toggle portion 41. When the inner teeth of the fourth bevel gear 34 mesh with the outer teeth of the toggle portion 41, the fourth bevel gear 34 drives the rotating shaft 5 to rotate through the toggle portion 41, and the rotating shaft 5 drives the transmission gear 9 to rotate. When it is necessary to control the three-wheeled motorcycle to move forward or backward, the toggle portion 41 is pushed to make the toggle portion 4 The outer teeth of the gear 1 mesh with the corresponding inner teeth of the third bevel gear 33 or the inner teeth of the fourth bevel gear 34, and then the operating handle 3 is pushed to make the shift block 13 push the transmission gear 9 to move in the direction of the connecting sleeve 8, and the transmission gear 9 is spline-connected with the connecting sleeve 8. At this time, the transmission gear 9 drives the connecting sleeve 8 and the power output shaft 18 to rotate at the same time, and the power output shaft 18 transmits power to the rear axle 26 of the three-wheeled motorcycle to drive the three-wheeled motorcycle. When it is necessary to take power to provide power for external equipment (such as oil pumps, water pumps, threshers, etc.), the shift block is pushed by pushing the operating handle 3. 13 pushes the transmission gear 9 to move in the direction of the first bevel gear 7 and makes the transmission gear 9 mesh with the internal teeth arranged on the first bevel gear 7. At this time, the transmission gear 9 is disengaged from the connecting sleeve 8 to realize the vehicle stopping movement. At the same time, the transmission gear 9 drives the first bevel gear 7 to rotate, and the first bevel gear 7 drives the second bevel gear 10 meshing therewith and the power take-off output shaft 2 fixedly connected to the second bevel gear 10 to rotate. The power take-off output shaft 2 transmits power to the outside, thereby realizing power taking, and also ensures that the vehicle is stationary when taking power, so as to prevent safety hazards caused by the movement of the vehicle during the power taking process.

[0036] like Figure 12As shown, as a second embodiment, the power take-off mechanism includes: a first gear 21, a second gear 20, a third gear 19, a transmission gear 9, a connecting sleeve 8, a power take-off output shaft 2, a power output shaft 18 and a toggle assembly, the first gear 21 is rotatably arranged on one end of the rotating shaft 5 located in the installation cavity 6, one end of the power output shaft 18 is inserted into the installation cavity 6 from the end of the housing 1 away from the rotating shaft 5, the power output shaft 18 is coaxially arranged with the rotating shaft 5, one end of the rotating shaft 5 is inserted into the power output shaft 18, the rotating shaft 5 is rotatably connected with the power output shaft 18, the connecting sleeve 8 is fixedly sleeved on the rotating shaft 5, the connecting sleeve 8 is located between the first gear 21 and the power output shaft 18, the transmission gear 9 is slidably arranged on the connecting sleeve 8, and the transmission gear 9 cannot rotate relative to the connecting sleeve 8 and cannot be separated from the rotating shaft 5. A toggle assembly is provided on the side wall of the installation cavity 6 for driving the transmission gear 9 to slide on the connecting sleeve 8 and be spline-connected or separated with the first gear 21. The toggle assembly is also used to drive the transmission gear 9 to slide on the connecting sleeve 8 and be spline-connected or separated with the power output shaft 18. The third gear 19 is rotatably arranged in the installation cavity 6 through the power take-off output shaft 2. The power take-off output shaft 2 is fixedly connected to the third gear 19. Preferably, the power take-off output shaft 2 and the third gear 19 are designed as an integrated whole. One end of the power take-off output shaft 2 extends out of the housing 1. A second gear 20 is provided between the first gear 21 and the third gear 19. The second gear 20 is meshed with the first gear 21 and the third gear 19 respectively.

[0037] The toggle assembly includes: a mounting seat 11, a toggle block 13 and a pressing member. The mounting seat 11 is rotatably arranged in the mounting cavity 6 through a mounting shaft 12. The toggle block 13 is arranged on a side of the mounting seat 11 close to the transmission gear 9. The transmission gear 9 is provided with a toggle groove 14 surrounding the toggle groove. The pressing member is arranged on the side wall of the mounting cavity 6. The pressing member is used to press the toggle block 13 in the toggle groove 14. The toggle block 13 is used to push the transmission gear 9 to slide on the connecting sleeve 8. The pressing member includes: a spring 15 and a pressing block 16. The spring 15 is horizontally arranged on the side wall of the mounting cavity 6. The pressing block 16 is arranged on the end of the spring 15. Two pressing grooves 17 are arranged on the side of the mounting seat 11 close to the pressing block 16. The pressing block 16 is inserted into the pressing groove 17 under the elastic force of the spring 15. One end of the mounting shaft 12 passes through the outside of the housing 1. The end of the mounting shaft 12 located outside the housing 1 is provided with an operating handle 3.

[0038] The working principle of this embodiment is as follows: the transmission method of the above embodiment is the same, the power of the engine 22 is transmitted to the rotating shaft 5, when it is necessary to control the three-wheeled motorcycle to move forward or backward, first the three-wheeled motorcycle is placed in forward gear or reverse gear through the shift mechanism, and then the operating handle 3 is pushed to make the shift block 13 push the transmission gear 9 on the connecting sleeve 8 to move in the direction of the power output shaft 18, and the transmission gear 9 is spline-connected with the power output shaft 18 (that is, when a part of the transmission gear 9 is sleeved on the power output shaft 18), at this time, the transmission gear 9 drives the power output shaft 18 to rotate through the connecting sleeve 8, and the power output shaft 18 transmits power to the rear axle 26 of the three-wheeled motorcycle to realize the driving of the three-wheeled motorcycle, when it is necessary to take power to provide power for external equipment (such as oil pumps, water pumps, threshers, etc.) When supplying power, the operating handle 3 is pushed to make the shift block 13 push the transmission gear 9 on the connecting sleeve 8 to move in the direction of the first gear 21 and make the transmission gear 9 spline-connected with the first gear 21 (that is, when a part of the transmission gear 9 is sleeved on the first gear 21). At this time, the transmission gear 9 is disengaged from the power output shaft 18 to realize the vehicle stopping movement. At the same time, the transmission gear 9 drives the first gear 21 to rotate, the first gear 21 drives the second gear 20 meshing therewith to rotate, the second gear 20 drives the third gear 19 to rotate, and finally the third gear 19 drives the power take-off output shaft 2 fixedly connected thereto to rotate. The power take-off output shaft 2 transmits power to the outside, thereby realizing power take-off. At the same time, it also ensures that the vehicle is stationary when taking power to prevent safety hazards caused by vehicle movement during the power take-off process.

[0039] like Figure 13 and Figure 14 As shown, as a third embodiment, the output end of the engine 22 is spline-connected to one end of an input shaft 31, and the other end of the input shaft 31 drives the fifth bevel gear 32 of the shift mechanism to rotate, and the fifth bevel gear 32 transmits power to the third bevel gear 33 and the fourth bevel gear 34 of the shift mechanism, and the fifth bevel gear 32 is respectively meshed with the third bevel gear 33 and the fourth bevel gear 34, and the power take-off mechanism includes: a first gear 21, a second gear 20, a third gear 19, a power take-off output shaft 2 and a toggle assembly, the first gear 21 is fixed to one side of the third bevel gear 33, and the third bevel gear 34 is meshed with the third bevel gear 33 and the fourth bevel gear 34. The three-bevel gear 33 is used to drive the first gear 21 to rotate. The third gear 19 is rotatably arranged in the installation cavity 6 through the power take-off output shaft 2. The third gear 19 is spline-connected with the power take-off output shaft 2. The power take-off output shaft 2 is fixedly connected with the third gear 19. One end of the power take-off output shaft 2 extends out of the housing 1. A second gear 20 is arranged between the first gear 21 and the third gear 19. The second gear 20 is respectively meshed with the first gear 21 and the third gear 19. A toggle assembly for pushing the third gear 19 to slide on the power take-off output shaft 2 and to engage or disengage with the second gear 20 is arranged in the installation cavity 6.

[0040] The shifting component includes a shift fork shaft 37, a rocker arm 36, and a driving rod 39. The shift fork shaft 37 is slidably disposed in the mounting cavity 6, and one end of the shift fork shaft 37 passes through the mounting cavity 6. The rocker arm 36 is rotatably disposed on the housing 1 through a mounting rod 35. A shift hole 38 for inserting the rocker arm 36 is formed on the shift fork shaft 37. The rocker arm 36 is used to push the shift fork shaft 37 to slide in the mounting cavity 6. A driving rod 39 is disposed on the side wall of the shift fork shaft 37 close to the third gear 19. A driving groove is formed around the third gear 19 for one week. The driving rod 39 is used to act on the driving groove and push the third gear 19 to slide on the power take-off output shaft 2 and engage with or disengage from the second gear 20.

[0041] The working principle of this embodiment is as follows: the power transmission mode of the reverse gear in the above embodiment is adopted. As a priority, the reverse gear of the three-wheeled motorcycle selected in this reverse gear is a reverse gear with a neutral gear. When power take-off is required, first place the reverse gear of the three-wheeled motorcycle in the neutral gear (that is, the external teeth of the shifting part 41 do not mesh with the internal teeth of the fourth bevel gear 34 and the internal teeth of the third bevel gear 33), that is, to achieve the static state of the rotating shaft 5, prevent the three-wheeled motorcycle from moving during power take-off, and at the same time, power take-off can also be carried out when the three-wheeled motorcycle is moving forward or backward according to actual needs. When power take-off is required, rock the rocker arm 36. The rocker arm 36 rotates in the mounting cavity 6, so that the rocker arm 36 pushes the third gear 19 to slide on the power take-off output shaft 2, and finally the third gear 19 meshes with the second gear 20. The third bevel gear 33 drives the first gear 21 to rotate, the first gear 21 drives the second gear 20 to rotate, and the second gear 20 drives the third gear 19 and the power take-off output shaft 2 splined to the third gear 19 to rotate, thereby realizing power take-off.

[0042] As Figure 4 and Figure 15 shown, as the fourth embodiment, the power transmission mode of the reverse gear in the above embodiment is adopted. As a priority, this embodiment also selects a reverse gear of a three-wheeled motorcycle with a neutral gear. By arranging the fifth bevel gear 32 to mesh with the third bevel gear 33 and the fourth bevel gear 34 respectively, the fifth bevel gear 32 is rotatably mounted in the reverse gear of the three-wheeled motorcycle through a mounting column 40. The fifth bevel gear 32 cannot rotate relative to the mounting column 40. As a priority, the fifth bevel gear 32 and the mounting column 40 are integrally designed. A transmission gear 9 is splined to the mounting column 40. The transmission gear 9 can slide on the mounting column 40 and cannot disengage from the mounting column 40. A power take-off output shaft 2 is rotatably disposed on the housing 1 and coaxially arranged with the mounting column 40. The power take-off output shaft 2 can be splined to the transmission gear 9. The shifting component in the above embodiment disposed in the housing 1 is used to control the splined connection or disengagement of the transmission gear 9 and the power take-off output shaft 2. When the transmission gear 9 is splined to the power take-off output shaft 2, the power take-off output shaft 2 rotates, thereby realizing power take-off.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A power take-off reverse gear for a three-wheeled motorcycle, comprising a housing (1). A shifting mechanism for driving the rotation of the rotating shaft (5) of the three-wheeled motorcycle is arranged inside the housing (1). An input interface (4) is provided on the housing (1). The output end of the engine (22) of the three-wheeled motorcycle transmits power to the shifting mechanism of the reverse gear through the input interface (4). It is characterized in that, The housing (1) is further provided with an installation cavity (6), a power take-off mechanism is provided in the installation cavity (6), one end of the rotating shaft (5) is inserted into the installation cavity (6) and connected to the power take-off mechanism, and the power take-off mechanism is used to take off power and transmit power to the outside; The power take-off mechanism comprises: a first bevel gear (7), a second bevel gear (10), a transmission gear (9), a connecting sleeve (8), a power take-off output shaft (2), a power output shaft (18) and a shifting assembly, wherein the first bevel gear (7) is rotatably arranged on one end of the rotating shaft (5) located in the mounting cavity (6), the transmission gear (9) is slidably arranged on one end of the rotating shaft (5) located in the mounting cavity (6), the transmission gear (9) cannot be separated from the rotating shaft (5) and the transmission gear (9) cannot rotate relative to the rotating shaft (5), the power output shaft (18) is inserted into the mounting cavity (6) from the side of the housing (1) away from the rotating shaft (5), the power output shaft (18) is coaxially arranged with the rotating shaft (5), and the power output shaft (18) is arranged in a manner similar to that of the rotating shaft (5). 18) A connecting sleeve (8) is fixedly arranged on one end located in the installation cavity (6), and an internal spline is arranged in the connecting sleeve (8). The transmission gear (9) can be spline-connected with the connecting sleeve (8). A toggle assembly for driving the transmission gear (9) to slide on the rotating shaft (5) and to engage or disengage with the first bevel gear (7) is arranged on the side wall of the installation cavity (6). The toggle assembly is also used to drive the transmission gear (9) to slide on the rotating shaft (5) and to engage or disengage with the connecting sleeve (8) spline. A second bevel gear (10) is rotatably arranged on the side wall of the installation cavity (6) through the power take-off output shaft (2) and is meshed with the first bevel gear (7). The second bevel gear (10) is fixedly connected to the power take-off output shaft (2).

2. The power take-off reverse gear for a three-wheeled motorcycle according to claim 1, characterized in that, The shifting assembly comprises: a mounting seat (11), a shifting block (13) and a pressing member. The mounting seat (11) is rotatably arranged in a mounting cavity (6) via a mounting shaft (12). The shifting block (13) is arranged on a side of the mounting seat (11) close to a transmission gear (9). The transmission gear (9) is provided with a shifting groove (14) surrounding the transmission gear. The pressing member is arranged on a side wall of the mounting cavity (6). The pressing member is used to press the shifting block (13) in the shifting groove (14). The shifting block (13) is used to push the transmission gear (9) to slide on the rotating shaft (5).

3. The power take-off reverse gear for a three-wheeled motorcycle according to claim 2, characterized in that The clamping member comprises: a spring (15) and a clamping block (16); the spring (15) is horizontally arranged on the side wall of the installation cavity (6); a clamping block (16) is arranged on the end of the spring (15); two clamping grooves (17) are provided on the side of the installation seat (11) close to the clamping block (16); the clamping block (16) is inserted into the clamping groove (17) under the elastic force of the spring (15); one end of the installation shaft (12) extends out of the shell (1); and an operating handle (3) is arranged on the end of the installation shaft (12) located outside the shell (1).

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