A power shift reversing hybrid transmission

Abstract

The present invention relates to a power shift reversing hybrid transmission, comprising an input shaft, a second input shaft, an output shaft, an intermediate shaft, five shift clutches, two reversing clutches, a multi-plate dry clutch, a gear set, a controller, an engine and a motor; the gear set comprises a movable gear and a fixed gear, and through the combination of the clutch and the gear set, eight forward gears and eight reverse gears can be realized, and the shift reversing operation without power interruption can be realized through the internal meshing of the gears, and the power transmission is smooth. The transmission has two power sources, and has two driving modes of engine drive alone and motor drive alone. They can work in their own high-efficiency ranges respectively, improve work efficiency, improve energy utilization efficiency, and greatly reduce resource waste. The transmission has high transmission efficiency and compact structure, can meet the output requirements of multiple gears, and can be used in many scenes with high power requirements, poor working environment, and frequent gear changes.

Description

Technical Field

[0001] The present invention belongs to the technical field of transmissions, and in particular relates to a hybrid power transmission capable of power shifting and reversing. Background Art

[0002] In recent years, environmental pollution has intensified. With the continuous increase in energy consumption, the coal-based energy structure has caused urban air pollution, and excessive consumption of biomass energy has caused ecological damage, and the pressure on the ecological environment has increased. In order to achieve green and low-carbon transformation, it is necessary to reconstruct the basic industries, and China has obvious first-mover advantages. From the perspective of the global carbon dioxide emission structure, the energy and transportation industries as infrastructure account for more than half of the share. Therefore, to achieve green and low-carbon development, we must first build new infrastructure and vigorously develop new energy and green transportation. Hybrid drive, as an efficient driving method, has the advantages of energy saving and low emissions, and has become a research focus in the automotive field.

[0003] In some scenarios where the working conditions are complex and high power needs to be transmitted and gear shifting is frequent, in order to work better, the transmission is required to have multiple forward gears and multiple reverse gears. When the driver shifts gears, the operation is difficult due to the large number of gears. Traditional transmissions also have the problem of power interruption during gear shifting. Although the advancement of transmission technology in recent years has been able to avoid the problem of power interruption during gear shifting, such as dual-clutch transmissions. However, when high power needs to be transmitted, the dual-clutch transmission has higher requirements for the shift fork and clutch during gear shifting, otherwise the vehicle will generate noise, impact and other problems during gear shifting, which is not conducive to the vehicle's power and economy.

[0004] The traditional non-powered interruption transmission cannot be directly changed when switching from forward gear to reverse gear, or from reverse gear to forward gear, and the vehicle needs to stop to shift gears. The existing reversing clutch has a complex structure, high cost, and is easy to break. An idler gear or multiple pairs of gears need to act at the same time to change the gear direction, which has low transmission efficiency, large energy loss, and is inconvenient to install. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a new structure of power shift reversing hybrid transmission, which can quickly complete the reversing work without interrupting the power, and the reversing clutch has a simple structure and is easy to install.

[0006] The purpose of the present invention and the technical problem solved by the present invention are achieved by adopting the following technical solutions. A power shift reversing hybrid transmission proposed by the present invention includes a shifting gearbox, a shifting gearbox and a power reversing device, wherein the shifting gearbox includes an input shaft I for connecting to an engine, an input shaft II connected to a motor through a multi-plate dry clutch and at least three main box shift gear sets connected to a shifting clutch; the shifting gearbox includes an intermediate shaft III, an output shaft IV and at least two sub-box shift gear sets connected to a shifting clutch; the power reversing device includes a first reversing clutch, a second reversing clutch and two first reversing gears connected to the first reversing clutch and the second reversing clutch respectively arranged on the input shaft II; and also includes two second reversing gears fixed on the intermediate shaft III, wherein one of the first reversing gears is a movable inner gear ring, which meshes with the outer gear of a second reversing gear through the inner gear to form a first reversing gear set; and the other first reversing gear meshes with the outer gear of another second reversing gear through the outer gear to form a second reversing gear set.

[0007] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0008] The aforementioned power shift reversing hybrid transmission, the main box shift gear set is formed by the corresponding meshing of the first shift gear set on the input shaft I and the second shift gear set on the input shaft II, and each main box shift gear set is connected to the first shift clutch on the input shaft I or the second shift clutch on the input shaft II.

[0009] The aforementioned power shift reversing hybrid transmission, the auxiliary box shift gear set is composed of a third shift gear arranged on the intermediate shaft III and a fourth shift gear arranged on the output shaft IV, which are meshed with each other, and each auxiliary box shift gear set is connected to the third shift clutch on the intermediate shaft or the fourth shift clutch on the output shaft IV.

[0010] The aforementioned power shift reversing hybrid transmission, wherein the first shift clutch, the second shift clutch, the third shift clutch, the fourth shift clutch, the first reversing clutch, the second reversing clutch and the multi-plate dry clutch are all connected to a controller, and the separation and engagement of the above clutches are controlled by the controller.

[0011] The aforementioned power shift reversing hybrid transmission, wherein the movable internal gear ring includes a main body for connecting to the reversing clutch, an axial hole provided in the center of the main body for slidingly fitting with the input shaft II, a cylinder extending axially from the outer ring of the main body, and transmission internal teeth provided on the inner wall of the cylinder.

[0012] In the aforementioned power shift reversing hybrid transmission, the main part of the edge of the shaft hole extends axially to form an extension portion, and a key slot extending in the extension direction is provided on one side of the extension portion. The movable inner gear ring is connected to the reversing clutch by a key arranged in the key slot at one end.

[0013] In the aforementioned power shift reversing hybrid transmission, the extending direction of the extending portion is consistent with the extending direction of the cylinder.

[0014] The aforementioned power shift reversing hybrid transmission, wherein the end of the cylinder is flush with the end of the extension portion.

[0015] The aforementioned power shift reversing hybrid transmission, wherein the first shift clutch is the shift clutch C3, the first shift gear includes a first fixed gear, a first movable gear and a second fixed gear, wherein the first fixed gear and the first movable gear are connected via the shift clutch C3; the second shift clutch includes a shift clutch C2 and a shift clutch C4, the second shift gear includes a second movable gear, a third fixed gear and a third movable gear, wherein the third fixed gear is connected to the second movable gear and the third movable gear via the shift clutch C2 and the shift clutch C4 respectively; the first fixed gear and the second movable gear, the first movable gear and the third fixed gear, and the second fixed gear and the third movable gear are all kept in constant mesh via external teeth.

[0016] In the aforementioned power shift reversing hybrid transmission, the fourth shift gear includes a fifth movable gear and a sixth fixed gear, and the fourth shift clutch includes a shift clutch C7; the third shift gear includes a seventh fixed gear and a sixth movable gear, and the third shift clutch includes a shift clutch C8; the sixth movable gear is connected to the seventh fixed gear through the shift clutch C8, and the sixth fixed gear is connected to the fifth movable gear through the shift clutch C7; the seventh fixed gear and the fifth movable gear, as well as the sixth movable gear and the sixth fixed gear, are all kept in constant mesh through external teeth.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention can achieve considerable technical advancement and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0018] (1) With two power sources, the driving mode can be reasonably selected according to different scenarios. This can fully utilize the performance of the engine and motor, optimize their respective working ranges, improve overall work efficiency, and reduce pollution and waste.

[0019] (2) The multi-clutch power shifting scheme makes the entire shifting process noise-free and softer, smoother and less impactful. The clutches are all controlled by the controller, which can reduce the shifting time, make the operation simpler and more comfortable, reduce the difficulty and fatigue of the driver's operation, and improve the driving safety performance.

[0020] (3) The reversing clutch needs to transmit a large amount of power, so the reversing mechanism uses an internal gear ring instead of an idler gear or multiple pairs of gears. It is small in size, light in weight, has a large load-bearing capacity, and a large transmission ratio, which can reduce costs and improve transmission efficiency. In pure electric drive, the motor can be reversed without reversing, which optimizes the performance of the pure electric drive mode. When the engine is driven, the reverse gear can be changed without interrupting the power, making the vehicle work more smoothly; and the reversing clutch uses a high-power wet multi-plate clutch with a simple structure.

[0021] (4) The overall layout adopts a fixed-axis type instead of a planetary type, which optimizes the longitudinal space of the transmission. Multiple gears share a pair of gears, making the structure more compact and saving costs.

[0022] (5) It has sixteen gears and a wider speed ratio range, making it easier to allocate speed ratios and meeting the power and economy requirements of a wide range of occasions.

[0023] In pure power drive mode, input shaft II does not serve as input power, but only acts as an intermediate shaft to transmit power. In pure motor drive mode, input shaft II serves as input power.

[0024] The transmission of the present invention can form 16 gears, including 8 forward gears and 8 reverse gears. The engine provides 6 forward gears and 6 reverse gears, and the motor provides 2 forward gears and 2 reverse gears. When the motor provides reverse gear, the motor does not need to be reversed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the composition of the power shift reversing hybrid transmission of the present invention;

[0026] Figure 2 A schematic diagram of the steering of the movable internal gear and the fourth movable gear of the power shift reversing hybrid transmission of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal gear structure of the power shift reversing hybrid transmission of the present invention;

[0028] Figure 4 for Figure 3 AA section view.

[0029]

Main component symbol description

[0030] 1. First fixed gear

[0031] 2. First movable gear

[0032] 3. Second fixed gear

[0033] 4. Second movable gear

[0034] 5. Third fixed gear

[0035] 6. The third movable gear

[0036] 7. Movable internal gear ring

[0037] 8. Fourth movable gear

[0038] 9. Fourth fixed gear

[0039] 10. Fifth fixed gear

[0040] 11. Fifth movable gear

[0041] 12. Sixth fixed gear

[0042] 13. Seventh fixed gear

[0043] 14. Sixth movable gear

[0044] 15. Engine

[0045] 16. Motor

[0046] 17. Controller

[0047] Ⅰ. Input shaft

[0048] Ⅱ. Second input shaft

[0049] III. Intermediate shaft

[0050] IV. Output shaft

[0051] C1, multi-plate dry clutch

[0052] C3, clutch shift

[0053] C2, shift clutch

[0054] C4, clutch shift

[0055] C5, reversing clutch

[0056] C6, reversing clutch

[0057] C7, clutch shift

[0058] C8, clutch shift DETAILED DESCRIPTION

[0059] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation method, structure, characteristics and effects of the power shift reversing hybrid transmission proposed in accordance with the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0060] See also Figure 1-4 , which is a schematic diagram of various parts of the power shift reversing hybrid transmission of the present invention, the power shift reversing hybrid transmission includes a shift transmission main box, a shift transmission sub-box and a power reversing device, wherein the shift transmission main box includes an input shaft I for connecting to the engine 15 and an input shaft II connected to the motor 16 through a multi-plate dry clutch C1, wherein the input shaft I is provided with at least three first shift gears, the input shaft II is provided with at least three second shift gears, and each of the first shift gears and a second shift gear are meshed to form a main box shift gear set, the shift transmission main box has at least 3 main box shift gear sets, namely a first main box shift gear set, a second main box shift gear set and a third main box shift gear set. The input shaft I is also provided with a first shift clutch, and the input shaft II is also provided with a second shift clutch. Any one of the first shift clutch and the second shift clutch is connected to the first main box shift gear set, the second main box shift gear set or the third main box shift gear set. Each main box shift gear set is connected to a shift clutch, and in the first power gear state in which one of the shift gear sets is connected to a shift clutch and the shift clutch is combined with the shaft to which it is located, any one of the other two sets of main box shift gear sets can be connected to the corresponding shift clutch and combine the shift clutch with the shaft to which it is located, so that the first power gear state can be switched to the second power gear or the third power gear without power interruption, thereby realizing power switching between different gears in the main box.

[0061] The shifting speed sub-box includes an intermediate shaft III and an output shaft IV, at least two third shift gears and a third shift clutch are provided on the intermediate shaft III, at least two fourth shift gears and a fourth shift clutch are provided on the output shaft IV, and each of the third shift gears is meshed with a fourth shift gear to form a sub-box shift gear set, the shifting speed sub-box includes at least two sub-box shift gear sets, namely a first sub-box shift gear set and a second sub-box shift gear set, and one of the third shift clutch or the fourth shift clutch is connected to the first sub-box shift gear set, and the other is connected to the second sub-box shift gear set, and in the case of a first power gear position in which one of the first sub-box shift gear sets is connected to the third clutch and the third clutch is combined with the shaft where it is located, the second sub-box shift gear set can be connected to the fourth clutch, and at this time the fourth clutch is combined with the shaft where it is located, so that the sub-box can switch from the first power gear position to the second power gear position without power interruption.

[0062] The power reversing device includes a first reversing clutch and a second reversing clutch arranged on the input shaft II, two first reversing gears arranged on the input shaft II and two second reversing gears arranged on the intermediate shaft III, and the first reversing gear is meshed with the second reversing gear to form two reversing gear groups, namely the first reversing gear group and the second reversing gear group, and the first reversing gear group and the second reversing gear group are respectively connected to a reversing clutch, and in the first power reversing state in which the first reversing gear group is connected to the first reversing clutch and the first reversing clutch is combined with the input shaft II, the first reversing gear group can be connected to the second reversing clutch, and the second reversing clutch is combined with the input shaft II, so that in the absence of power interruption, the power reversing device can switch from the first power reversing state to the second power reversing state. The meshing mode of the first reversing gear set is internal meshing, and the meshing mode of the two reversing gears in the second reversing gear set is external meshing. Only four gears are needed to realize the switching of the power reversing state. The structure is simple and has the characteristics of small size, light weight, large load-bearing capacity and large transmission ratio, which can effectively reduce costs and improve transmission efficiency.

[0063] The first shift clutch, the second shift clutch, the third shift clutch, the fourth shift clutch, the first reversing clutch, the second reversing clutch and the multi-plate dry clutch C1 are all connected to the controller 17, and the separation and combination of the above clutches are controlled by the controller.

[0064] In the embodiment of the present invention, in the power reversing device, the first reversing gear includes a movable inner gear ring 7 and a fourth movable gear 8, the first reversing clutch is a reversing clutch C5, and the second reversing clutch is a reversing clutch C6, wherein the fourth movable gear 8 is connected to the input shaft II through the reversing clutch C6, and the movable inner gear ring 7 is connected to the input shaft II through the reversing clutch C5. Specifically, the movable inner gear ring 7 includes a main body 71 for connecting with the reversing clutch C5, an axial hole 72 provided at the center of the main body 71 and slidingly matched with the input shaft II, a cylinder 73 extending axially from the outer ring of the main body 71, and a transmission inner tooth 74 provided on the inner wall of the cylinder 73. Preferably, the position of the main body 71 located at the edge of the axial hole 72 extends axially to form an extension portion 76, and a key groove 77 extending in the extension direction (axial direction) is provided on one side of the extension portion 76, and the movable inner gear ring 7 is connected to the reversing clutch C5 through a key provided in the key groove 77 at one end.

[0065] In the embodiment of the present invention, the extending direction of the extending portion 76 is consistent with the extending direction of the cylinder 73, and the end of the cylinder is flush with the end of the extending portion, but it is not limited thereto.

[0066] The second reversing gear includes a fourth fixed gear 9 and a fifth fixed movable gear 10, wherein the fifth fixed gear 10 and the fourth movable gear 8 always maintain external meshing through external teeth, and the external teeth of the fourth fixed gear 9 are meshed with the transmission internal teeth 74 inside the movable inner gear ring 7, that is, the fourth fixed gear 9 and the movable inner gear ring 7 always maintain internal meshing.

[0067] In the shifting transmission main box, the first shifting clutch is a shifting clutch C3, the first shifting gear includes a first fixed gear 1, a first loose gear 2 and a second fixed gear 3, wherein the first fixed gear 1 and the first loose gear 2 are connected through the shifting clutch C3. The second shifting clutch includes a shifting clutch C2 and a shifting clutch C4, the second shifting gear includes a second loose gear 4, a third fixed gear 5 and a third loose gear 6, wherein the third fixed gear 5 is connected to the second loose gear 4 and the third loose gear 6 respectively through the shifting clutch C2 and the shifting clutch C4.

[0068] The first fixed gear 1 on the input shaft I and the second movable gear 4 on the input shaft II are kept in constant meshing through external teeth; the first movable gear 2 on the input shaft I and the third fixed gear 5 on the input shaft II are kept in constant meshing through external teeth; the second fixed gear 3 on the input shaft I and the third movable gear 6 on the input shaft II are kept in constant meshing through external teeth.

[0069] In the gearshift transmission sub-box, the fourth shift gear includes a fifth loose gear 11 and a sixth fixed gear 12, and the fourth shift clutch includes a shift clutch C7; the third shift gear includes a seventh fixed gear 13 and a sixth loose gear 14, and the third shift clutch includes a shift clutch C8. The sixth loose gear 14 is connected to the seventh fixed gear 13 through the shift clutch C8, and the sixth fixed gear 12 is connected to the fifth loose gear 11 through the shift clutch C7; the seventh fixed gear 13 and the fifth loose gear 11 are constantly meshed through external teeth, and the sixth loose gear 14 and the sixth fixed gear 12 are constantly meshed through external teeth.

[0070] The shift clutches C3, C2, C4, C7, C8, the reversing clutches C5, C6, and the multi-plate dry clutch C1 are all connected to the controller 17. The shift clutches C3, C2, C4, C7, C8, and the reversing clutches C5, C6 are all wet multi-plate clutches.

[0071] In a specific implementation of the present invention, the transmission can provide sixteen gears, eight forward gears and eight reverse gears, and the transmission has two driving modes, a pure power driving mode and a pure electric driving mode.

[0072] Pure power driving mode can provide six forward gears and six reverse gears, as follows:

[0073] 1. Forward gear

[0074] ①First gear:

[0075] The shift clutches C2 and C7 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → second loose gear 4 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → sixth fixed gear 12 → output shaft IV

[0076] ② Second gear:

[0077] The shift clutches C3 and C7 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → first loose gear 2 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → sixth fixed gear 12 → output shaft IV

[0078] ③Third gear:

[0079] The shift clutches C4 and C7 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → second fixed gear 3 → third loose gear 6 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → sixth fixed gear 12 → output shaft IV

[0080] ④Fourth gear:

[0081] The shift clutches C2 and C8 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → second loose gear 4 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → fifth fixed gear 12 → output shaft IV

[0082] ⑤ Fifth gear:

[0083] The shift clutches C3 and C8 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → first loose gear 2 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → fifth fixed gear 12 → output shaft IV

[0084] ⑥Sixth gear:

[0085] The shift clutches C4 and C8 are engaged, and the reversing clutch C6 is engaged. The power transmission route is: engine 15 → input shaft I → second fixed gear 3 → third loose gear 6 → third fixed gear 5 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → sixth fixed gear 12 → output shaft IV

[0086] 2. Reverse gear

[0087] ①First gear:

[0088] The shift clutches C2 and C7 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → second loose gear 4 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → fifth fixed gear 12 → output shaft IV

[0089] ② Second gear:

[0090] The shift clutches C3 and C7 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → first loose gear 2 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → fifth fixed gear 12 → output shaft IV

[0091] ③Third gear:

[0092] The shift clutches C4 and C7 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → second fixed gear 3 → third loose gear 6 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → sixth fixed gear 12 → output shaft IV

[0093] ④Fourth gear:

[0094] The shift clutches C2 and C8 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → second loose gear 4 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → sixth fixed gear 12 → output shaft IV

[0095] ⑤ Fifth gear:

[0096] The shift clutches C3 and C8 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → first fixed gear 1 → first loose gear 2 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → fourth and sixth loose gears 14 → sixth fixed gear 12 → output shaft IV

[0097] ⑥Sixth gear:

[0098] The shift clutches C4 and C8 are engaged, and the reversing clutch C5 is engaged. The power transmission route is: engine 15 → input shaft I → second fixed gear 3 → third loose gear 6 → third fixed gear 5 → input shaft II → loose internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → sixth fixed gear 12 → output shaft IV

[0099] In pure power driving mode, the working status of each gear clutch is as follows:

[0100]

[0101] Pure electric drive can provide two forward gears and two reverse gears, as follows:

[0102] 1. Forward gear

[0103] ①1st gear

[0104] Clutch C1 is engaged, shift clutch C7 is engaged, and reversing clutch C6 is engaged. The power transmission route is: motor 16 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → fifth loose gear 11 → sixth fixed gear 12 → output shaft IV

[0105] ② Second gear:

[0106] Clutch C1 is engaged, shift clutch C8 is engaged, and reversing clutch C6 is engaged. The power transmission route is: motor 16 → input shaft II → fourth loose gear 8 → fifth fixed gear 10 → intermediate shaft III → seventh fixed gear 13 → sixth loose gear 14 → sixth fixed gear 12 → output shaft IV

[0107] Reverse gear

[0108] ①1st gear

[0109] Clutch C1 is engaged, shift clutch C7 is engaged, and reversing clutch C5 is engaged. The power transmission route is: motor 16 → input shaft II → movable internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → fifth movable gear 11 → sixth fixed gear 12 → output shaft IV

[0110] ② Second gear:

[0111] Clutch C1 is engaged, shift clutch C8 is engaged, and reversing clutch C5 is engaged. The power transmission route is: motor 16 → input shaft II → movable internal gear 7 → fourth fixed gear 9 → intermediate shaft III → seventh fixed gear 13 → sixth movable gear 14 → sixth fixed gear 12 → output shaft IV

[0112] In pure electric driving mode, the working status of each gear clutch is as follows

[0113]

[0114]

[0115] Power reversing: When the vehicle is moving forward and needs to go into reverse gear, the clutch C6 is slowly disengaged and the clutch C5 is slowly engaged, so that the forward and reverse switching can be achieved without interruption of power. When the reversing clutch is engaged and disengaged, the shifting clutch is also engaged and disengaged, so that the gear can be switched while switching the direction. For example, when switching from the third forward gear to the second reverse gear, the clutches C4 and C6 are disengaged, and the clutches C3 and C5 begin to engage. Under the control of the controller, the clutches C4 and C6 are completely disengaged in a very short time, and the clutches C3 and C5 are completely engaged, completing the gear shifting and reversing work, so that the power can be switched without interruption when the forward gear is replaced by the reverse gear.

[0116] The transmission of the present invention can provide more gears by adding some parts.

[0117] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A power shift reversing hybrid transmission, comprising a shift speed main box, a shift speed sub box and a power reversing device, characterized in that: The shifting speed main box comprises an input shaft I for connecting to the engine, an input shaft II connected to the motor via a multi-plate dry clutch, and at least three main box shifting gear sets connected to the shifting clutch; The shift speed sub-box comprises an intermediate shaft III, an output shaft IV and at least two sub-box shift gear sets connected with a shift clutch; The power reversing device comprises a first reversing clutch and a second reversing clutch provided on the input shaft II, and two first reversing gears respectively connected to the first reversing clutch and the second reversing clutch; and also comprises two second reversing gears fixed on the intermediate shaft III, wherein one of the first reversing gears is a movable internal gear ring, and the movable internal gear ring meshes with the external teeth of a second reversing gear through the internal teeth to form a first reversing gear set; and the other first reversing gear meshes with the external teeth of another second reversing gear through the external teeth to form a second reversing gear set; The movable inner gear ring comprises a main body for connecting with a reversing clutch, an axial hole arranged at the center of the main body and slidingly matched with the input shaft II, a cylinder extending axially from the outer ring of the main body, and transmission inner teeth arranged on the inner wall of the cylinder.

2. The power shift reversing hybrid transmission according to claim 1, characterized in that: The main box shift gear set is formed by the corresponding meshing of the first shift gear on the input shaft I and the second shift gear on the input shaft II. Each main box shift gear set is connected to the first shift clutch on the input shaft I or the second shift clutch on the input shaft II.

3. The power shift reversing hybrid transmission according to claim 2, characterized in that: The auxiliary box shift gear set is composed of a third shift gear arranged on the intermediate shaft III and a fourth shift gear arranged on the output shaft IV, which are meshed with each other, and each auxiliary box shift gear set is connected to the third shift clutch on the intermediate shaft or the fourth shift clutch on the output shaft IV.

4. The power shift reversing hybrid transmission according to claim 3, characterized in that: The first shift clutch, the second shift clutch, the third shift clutch, the fourth shift clutch, the first reversing clutch, the second reversing clutch and the multi-plate dry clutch are all connected to a controller, and the separation and combination of the above clutches are controlled by the controller.

5. The power shift reversing hybrid transmission according to claim 1, characterized in that: The main part of the edge of the shaft hole is extended axially to form an extension part, one side of the extension part is provided with a keyway extending in the extension direction, and the movable inner gear ring is connected to the reversing clutch through a key arranged in the keyway at one end.

6. The power shift reversing hybrid transmission according to claim 5, characterized in that: The extending direction of the extending portion is consistent with the extending direction of the cylinder.

7. The power shift hybrid transmission according to claim 6, characterized in that: The end of the cylinder is flush with the end of the extension part.

8. The power shift hybrid transmission according to claim 2, characterized in that: The first shift clutch is the shift clutch C3, the first shift gear includes a first fixed gear, a first movable gear and a second fixed gear, wherein the first fixed gear and the first movable gear are connected via the shift clutch C3; the second shift clutch includes a shift clutch C2 and a shift clutch C4, the second shift gear includes a second movable gear, a third fixed gear and a third movable gear, wherein the third fixed gear is connected to the second movable gear and the third movable gear via the shift clutch C2 and the shift clutch C4 respectively; the first fixed gear and the second movable gear, the first movable gear and the third fixed gear, and the second fixed gear and the third movable gear are all kept in constant mesh via external teeth.

9. The power shift hybrid transmission according to claim 3, characterized in that: The fourth shift gear includes a fifth movable gear and a sixth fixed gear, and the fourth shift clutch includes a shift clutch C7; the third shift gear includes a seventh fixed gear and a sixth movable gear, and the third shift clutch includes a shift clutch C8; the sixth movable gear is connected to the seventh fixed gear through the shift clutch C8, and the sixth fixed gear is connected to the fifth movable gear through the shift clutch C7; the seventh fixed gear and the fifth movable gear, as well as the sixth movable gear and the sixth fixed gear, are all kept in constant meshing through external teeth.

Images