A power interrupting shift transmission and vehicle powertrain

Abstract

The application discloses a power uninterrupted gear shifting transmission, which comprises an input shaft, a first shaft, a hollow shaft and an output shaft arranged in parallel with each other, a power input device connected with the input shaft, the input shaft, the first shaft, the hollow shaft and the output shaft connected through respective gear sets, and power transmitted to the output shaft through the input shaft, the first shaft and the hollow shaft through respective clutch mechanisms. The power uninterrupted gear shifting transmission has a large number of gear positions, power shifting and power reversing, can realize power uninterrupted gear shifting of multiple gear positions according to load, has compact structure, small space occupation, low manufacturing cost and is convenient for industrialization. Further, the application also discloses a vehicle power assembly, which is connected with a synchronizer transmission, and the synchronizer transmission is divided into different working gear positions according to the use condition of the vehicle. In each working gear position, the power uninterrupted gear shifting transmission realizes 6-to-3 speed requirement according to load.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of transmission, and particularly relates to a power uninterrupted gear shifting transmission and a vehicle power assembly. BACKGROUND

[0002] At present, tractor gear shifting is mainly mechanical, and power is disconnected through meshing sleeves or synchronizers for gear selection, which not only affects work efficiency but also is very difficult to operate, and the driver is required to be relatively high. Since the meshing sleeve gear shifting and the synchronizer gear shifting are complex to operate, the driving operation experience is poor, and power is interrupted, which greatly affects the work efficiency of the tractor in the field. Although some innovations and breakthroughs have been made in the field of agricultural equipment research in recent years, the structure of the transmission is simplified, but the number of gears, especially the number of reverse gears, is insufficient and cannot meet the work conditions, and the axial dimension is too long, which is not conducive to the installation of the transmission system on the whole vehicle. SUMMARY

[0003] The application aims to solve the problems in the prior art and provide a power uninterrupted gear shifting transmission and a vehicle power assembly.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical solutions:

[0005] A power uninterrupted gear shifting transmission comprises an input shaft, a first shaft, a hollow shaft and an output shaft arranged in parallel with each other.

[0006] The input shaft is connected with a power input device, the input shaft is connected with the first shaft through a first gear set, the first shaft is connected with the hollow shaft through a second gear set or a third gear set, and the hollow shaft is connected with the output shaft through a fourth gear set, a fifth gear set or a sixth gear set.

[0007] The input shaft directly transmits power to the hollow shaft through a first clutch mechanism, or the input shaft transmits power to the hollow shaft through the first gear set, the second gear set and a second clutch mechanism, or the input shaft transmits power to the hollow shaft through the first gear set, the third gear set and a third clutch mechanism.

[0008] The hollow shaft transmits power to the output shaft through the fourth gear set and a fourth clutch mechanism, or the hollow shaft transmits power to the output shaft through the fifth gear set and a fifth clutch mechanism, or the hollow shaft transmits power to the output shaft through the sixth gear set and a sixth clutch mechanism.

[0009] Further improvement of the application is as follows:

[0010] The first gear set comprises an input shaft gear and a first shaft input wheel in meshing connection, the second gear set comprises a neutral main drive wheel and a forward gear hollow sleeve wheel in meshing connection, the third gear set comprises a low gear main drive wheel, a reverse gear hollow sleeve wheel and a reverse gear idler wheel, the low gear main drive wheel is in meshing connection with the reverse gear hollow sleeve wheel through the reverse gear idler wheel, the fourth gear set comprises a high gear main drive wheel and a high gear driven wheel in meshing connection, the fifth gear set comprises a neutral main drive wheel and a neutral driven wheel in meshing connection, and the sixth gear set comprises a low gear main drive wheel and a low gear driven wheel in meshing connection.

[0011] The first clutch mechanism comprises a clutch friction plate and a first wet clutch hub in connection, the second clutch mechanism comprises a first wet clutch and a second wet clutch hub in connection, the third clutch mechanism comprises a second wet clutch and a second wet clutch hub in connection, the fourth clutch mechanism comprises a fifth wet clutch and a fourth wet clutch hub in connection, the fifth clutch mechanism comprises a fourth wet clutch and a third wet clutch hub in connection, and the sixth clutch mechanism comprises a third wet clutch and a third wet clutch hub in connection.

[0012] The clutch friction plate is connected with the hollow shaft, the first wet clutch is connected with the forward gear hollow sleeve wheel, the second wet clutch is connected with the reverse gear hollow sleeve wheel, the third wet clutch is connected with the low gear driven wheel, the fourth wet clutch is connected with the neutral driven wheel, and the fifth wet clutch is connected with the high gear driven wheel.

[0013] The input shaft is connected with the first wet clutch hub, the first shaft is connected with the second wet clutch hub, and the output shaft is connected with the third wet clutch hub and the fourth wet clutch hub respectively.

[0014] A vehicle power assembly comprises the power uninterrupted gear shifting transmission.

[0015] The power input device is sequentially connected with the power uninterrupted gear shifting transmission, the power connecting mechanism, the synchronizer transmission and the rear drive axle.

[0016] The power input device is an internal combustion engine, and the power connecting mechanism is a clutch.

[0017] Compared with the prior art, the power uninterrupted gear shifting transmission has the following beneficial effects:

[0018] By providing a power uninterrupted gear shifting transmission, the input shaft, the first shaft, the hollow shaft and the output shaft are arranged in parallel with each other, the input shaft is connected with a power input device, the input shaft transmits power to the output shaft through the hollow shaft through a plurality of gear sets and clutch mechanisms, and the power uninterrupted gear shifting transmission realizes power uninterrupted during gear shifting through the cooperation of the plurality of gear sets and clutch mechanisms, optimizes the operation experience of the driver, and improves the working efficiency of the transmission.

[0019] Further, a vehicle power assembly including the power uninterrupted gear shift is further provided, by connecting a synchronizer gear shift in series, the synchronizer gear shift is divided into different working gears according to the working condition of the vehicle, and in each working gear, the power uninterrupted gear shift realizes 6-to-3 speed requirement according to the load. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 The schematic diagram of the principle of the present application;

[0022] Figure 2 The schematic diagram of the vehicle assembly of an embodiment of the present application.

[0023] Wherein: 10-power input device; 11-clutch friction plate; 12-first wet clutch; 13-second wet clutch; 14-third wet clutch; 15-fourth wet clutch; 16-fifth wet clutch; 17-first wet clutch hub; 18-second wet clutch hub; 19-third wet clutch hub; 20-fourth wet clutch hub; 21-input shaft gear; 22-first shaft input wheel; 23-high gear driving wheel; 24-intermediate gear driving wheel; 25-low gear driving wheel; 26-forward gear hollow wheel; 27-reverse gear hollow wheel; 28-reverse gear idler; 29-high gear driven wheel; 30-intermediate gear driven wheel; 31-low gear driven wheel; 32-input shaft; 33-first shaft; 34-reverse gear idler shaft; 35-output shaft; 36-hollow shaft; 40-power uninterrupted gear shift; 47-power connection mechanism; 50-synchronizer gear shift; 60-rear drive axle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the application without creative labor fall within the scope of the application.

[0026] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0027] In the description of the embodiments of the application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication between the two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] The application will be described in further detail below in conjunction with the accompanying drawings:

[0031] Referring to Figure 1 is a schematic view of the construction mode of the power uninterrupted shifting transmission of the application, the power uninterrupted shifting transmission 40 includes an input shaft 32, a first shaft 33, a reverse idler shaft 34, a hollow shaft 36 and an output shaft 35 arranged in parallel with each other, wherein the hollow shaft 36 is sleeved on the input shaft 32, and the input shaft 32 is connected to the power input device 10.

[0032] The input shaft 32 is connected to the first shaft 33 through a first gear set, which comprises an input shaft gear 21 and a first shaft input gear 22 engaged with each other. The first shaft 33 is connected to the hollow shaft 36 through a second gear set or a third gear set, the second gear set comprising a neutral main driving gear 24 and a forward gear hollow gear 26 engaged with each other, and the third gear set comprising a low gear main driving gear 25, a reverse gear hollow gear 27 and a reverse gear idler 28, the low gear main driving gear 25 being engaged with the reverse gear hollow gear 27 through the reverse gear idler 28. The hollow shaft 36 is connected to the output shaft 35 through a fourth gear set, a fifth gear set or a sixth gear set, the fourth gear set comprising a high gear main driving gear 23 and a high gear driven gear 29 engaged with each other, the fifth gear set comprising the neutral main driving gear 24 and a neutral gear driven gear 30 engaged with each other, and the sixth gear set comprising the low gear main driving gear 25 and a low gear driven gear 31 engaged with each other.

[0033] The input shaft 32 directly transmits power to the hollow shaft 36 through a first clutch mechanism, the first clutch mechanism comprising a clutch friction plate 11 and a first wet clutch hub 17 connected with each other; or the input shaft 32 transmits power to the hollow shaft 36 through a first gear set, a second gear set and a second clutch mechanism, the second clutch mechanism comprising a first wet clutch 12 and a second wet clutch hub 18 connected with each other; or the input shaft 32 transmits power to the hollow shaft 36 through a first gear set, a third gear set and a third clutch mechanism, the third clutch mechanism comprising a second wet clutch 13 and the second wet clutch hub 18 connected with each other.

[0034] The hollow shaft 36 transmits power to the output shaft 35 through a fourth gear set and a fourth clutch mechanism, the fourth clutch mechanism comprising a fifth wet clutch 16 and a fourth wet clutch hub 20 connected with each other; or the hollow shaft 36 transmits power to the output shaft 35 through a fifth gear set and a fifth clutch mechanism, the fifth clutch mechanism comprising a fourth wet clutch 15 and a third wet clutch hub 19 connected with each other; or the hollow shaft 36 transmits power to the output shaft 35 through a sixth gear set and a sixth clutch mechanism, the sixth clutch mechanism comprising a third wet clutch 14 and the third wet clutch hub 19 connected with each other.

[0035] The clutch friction plate 11 is connected to the hollow shaft 36, the first wet clutch 12 is connected to the forward gear hollow gear 26, the second wet clutch 13 is connected to the reverse gear hollow gear 27, the third wet clutch 14 is connected to the low gear driven gear 31, the fourth wet clutch 14 is connected to the low gear driven gear 31, the fourth wet clutch 15 is connected to the neutral gear driven gear 30, and the fifth wet clutch 16 is connected to the high gear driven gear 29. The input shaft 32 is connected to the first wet clutch hub 17, the first shaft 33 is connected to the second wet clutch hub 18, and the output shaft 35 is connected to the third wet clutch hub 19 and the fourth wet clutch hub 20 respectively.

[0036] The specific working process is as follows:

[0037] Power transmission from input shaft 32 to hollow shaft 36:

[0038] (1) The input shaft 32 transmits power to the hollow shaft 36 through the first wet clutch hub 17 and the clutch friction plate 11, realizing the same rotation speed of the hollow shaft 36 as the input shaft 32.

[0039] (2) The input shaft 32 transmits power to the wet clutch hub 18 through the input shaft gear 21 and the first shaft input wheel 22, and transmits power to the hollow shaft 36 through the first wet clutch 12, the forward gear hollow sleeve wheel 26 and the intermediate gear driving wheel 24, the rotation speed of the hollow shaft 36 has a proportional relationship with the rotation speed of the input shaft 32, and the required proportional relationship can be obtained by adjusting the tooth number of the four gears of the input shaft gear 21, the first shaft input wheel 22, the intermediate gear driving wheel 24 and the forward gear hollow sleeve wheel 26.

[0040] (3) The input shaft 32 transmits power to the second wet clutch hub 18 through the input shaft gear 21 and the first shaft input wheel 22, and transmits power to the hollow shaft 36 through the second wet clutch 13, the reverse gear hollow sleeve wheel 27, the reverse gear idler 28 and the low gear driving wheel 25, at this time the rotation direction of the hollow shaft 36 is opposite to that of the input shaft 32, and the rotation speed has a proportional relationship, and the required proportional relationship can be obtained by adjusting the low gear driving wheel 25 and the reverse gear hollow sleeve wheel 27.

[0041] Power transmission from hollow shaft 36 to output shaft 35:

[0042] (1) The high gear driving wheel 23 on the hollow shaft 36 transmits power to the fourth wet clutch hub 20 through the high gear driven wheel 29 and the fifth wet clutch 16, and then transmits power to the output shaft 35.

[0043] (2) The hollow shaft 36 transmits power to the fourth wet clutch 15 and the third wet clutch hub 19 through the intermediate gear driving wheel 24 and the intermediate gear driven wheel 30, and then transmits power to the output shaft 35.

[0044] (3) The hollow shaft 36 transmits power to the third wet clutch 14 and the third wet clutch hub 19 through the low gear driving wheel 25 and the low gear driven wheel 31, and then transmits power to the output shaft 35.

[0045] By operating each wet clutch, 6 forward gears and 3 reverse gears can be obtained, as shown in Table 1(a) and Table 1(b), the numbers in the table represent the combined wet clutch.

[0046] Table 1(a). Transmission gear logic under low-speed power transmission of the first wet clutch

[0047] Gear F1 F2 F3 F4 F5 F6 R1 R2 R3 Clutch 12+14 11+14 12+15 11+15 12+16 11+16 13+14 13+15 13+16

[0048] Table 1(b). Transmission gear logic for clutch plates in low speed power transfer

[0049] Gear F1 F2 F3 F4 F5 F6 R1 R2 R3 Clutch 11+14 12+14 11+15 12+15 11+16 12+16 13+14 13+15 13+16

[0050] Referring to Figure 2 Fig. 1 is a schematic diagram of a vehicle powertrain assembly according to an embodiment of the present application, which is a vehicle powertrain assembly with a power interrupting transmission 40, including a power interrupting transmission 40, a power connection mechanism 47, a synchronizer transmission 50 and a rear drive axle 60. The power input device 10 can be an internal combustion engine or other type of power source, which drives the power interrupting transmission 40 through a driving connection, and the power connection mechanism 47 can be a rigid direct connection mechanism or a clutch.

[0051] The preferred embodiments of the present application have been described above with the aid of drawing figures, and are not limited to those embodiments per se, which can be amended or modified by those skilled in the art, without departing from the spirit of the present application that only such limitations should be imposed as set forth in the claims. Therefore, the above disclosure is not intended to limit the present application, but to explain the preferred embodiments.

Claims

1. A power uninterrupted shift transmission, characterized in that: It includes an input shaft (32), a first shaft (33), a hollow shaft (36) and an output shaft (35) which are arranged in parallel with each other; The input shaft (32) is connected to a power input device (10), the input shaft (32) is connected to a first shaft (33) via a first gear set, the first shaft (33) is connected to a hollow shaft (36) via a second gear set or a third gear set, and the hollow shaft (36) is connected to an output shaft (35) via a fourth gear set, a fifth gear set or a sixth gear set; The input shaft (32) transmits power directly to the hollow shaft (36) through the first clutch mechanism, or the input shaft (32) transmits power to the hollow shaft (36) through the first gear set, the second gear set and the second clutch mechanism, or the input shaft (32) transmits power to the hollow shaft (36) through the first gear set, the third gear set and the third clutch mechanism; The hollow shaft (36) transmits power to the output shaft (35) through the fourth gear set and the fourth clutch mechanism, or the hollow shaft (36) transmits power to the output shaft (35) through the fifth gear set and the fifth clutch mechanism, or the hollow shaft (36) transmits power to the output shaft (35) through the sixth gear set and the sixth clutch mechanism; The first gear set includes an input shaft gear (21) and a first shaft input wheel (22) meshed with each other, the second gear set includes a mid-range driving wheel (24) and a forward gear idler wheel (26) meshed with each other, the third gear set includes a low-range driving wheel (25), a reverse gear idler wheel (27) and a reverse gear idler wheel (28), the low-range driving wheel (25) meshing with the reverse gear idler wheel (27) through the reverse gear idler wheel (28), the fourth gear set includes a high-range driving wheel (23) and a high-range driven wheel (29) meshed with each other, the fifth gear set includes a mid-range driving wheel (24) and a mid-range driven wheel (30) meshed with each other, and the sixth gear set includes a low-range driving wheel (25) and a low-range driven wheel (31) meshed with each other.

2. A power uninterrupted shift transmission according to claim 1, characterized in that: The first clutch mechanism includes a clutch friction plate (11) and a first wet clutch hub (17) connected to each other, the second clutch mechanism includes a first wet clutch (12) and a second wet clutch hub (18) connected to each other, the third clutch mechanism includes a second wet clutch (13) and a second wet clutch hub (18) connected to each other, the fourth clutch mechanism includes a fifth wet clutch (16) and a fourth wet clutch hub (20) connected to each other, the fifth clutch mechanism includes a fourth wet clutch (15) and a third wet clutch hub (19) connected to each other, and the sixth clutch mechanism includes a third wet clutch (14) and a third wet clutch hub (19) connected to each other.

3. A power uninterrupted shift transmission as claimed in claim 2, characterized in that: The clutch friction plate (11) is connected to the hollow shaft (36), the first wet clutch (12) is connected to the forward gear idler gear (26), the second wet clutch (13) is connected to the reverse gear idler gear (27), the third wet clutch (14) is connected to the low gear driven gear (31), the fourth wet clutch (15) is connected to the middle gear driven gear (30), and the fifth wet clutch (16) is connected to the high gear driven gear (29).

4. The power uninterrupted shift transmission according to claim 2, characterized in that: The input shaft (32) is connected to the first wet clutch hub (17), the first shaft (33) is connected to the second wet clutch hub (18), and the output shaft (35) is connected to the third wet clutch hub (19) and the fourth wet clutch hub (20).

5. A vehicle powertrain, characterized in that: It comprises a power non-interruption shift transmission as described in any one of claims 1-4.

6. A vehicle powertrain according to claim 5, characterized in that: It also includes a power connection mechanism (47), a synchronizer transmission (50) and a rear drive axle (60), wherein the power input device (10) is sequentially connected to the power non-interruption shift transmission (40), the power connection mechanism (47), the synchronizer transmission (50), and the rear drive axle (60).

7. A vehicle powertrain according to claim 6, characterized in that: The power input device (10) is an internal combustion engine, and the power connection mechanism (47) is a clutch.

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