Power reversing power high-low gear integrated module and transmission gearbox

Abstract

The utility model provides a kind of power reversing power high-low gear integrated module and transmission gearbox, forward clutch is used to combine forward gear, reverse clutch is used to combine reverse gear;Reversing shaft is provided with and reverse gear engages reversing idler;Power output shaft is sequentially provided with low gear, low clutch, high clutch, and high gear along the axial direction, low clutch is used to combine low gear, high clutch is used to combine high gear;Intermediate shaft is provided with first gear and second gear on intermediate shaft, forward gear, low gear all engage first gear, second gear engages high gear;Reverse gear set, and reverse gear engages and is used to transmit power to power output shaft by intermediate shaft simultaneously with cancelling high-speed reverse, the risk of driver misoperation can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission technology, and in particular relates to a power reversing high and low gear integrated module and transmission gearbox. Background Technology

[0002] With the development of technology, the application of agricultural machinery such as tractors is becoming increasingly widespread. However, the power reversing and high / low gear structures of the transmission gearboxes in existing tractors are usually designed as separate modules, resulting in low integration and poor space utilization. Furthermore, existing designs include high-power gears for both forward and reverse directions. Because the high speed of the reverse gear is relatively fast, it is difficult for the driver to control, posing a significant safety hazard. Therefore, in actual use, high-power gears are mostly used for forward gears, and the high-power reverse structure is prone to driver misoperation. Utility Model Content

[0003] The main purpose of this utility model is to propose a power reversing high and low gear integrated module and transmission gearbox, which aims to solve the technical problems of low integration of power reversing and high and low gear structure in the existing transmission gearbox and the existence of significant safety hazards.

[0004] To achieve the above objectives, this utility model provides a power reversing high / low gear integrated module, comprising: a power input shaft, on which a forward gear, a forward clutch, a reverse clutch, and a reverse gear are sequentially arranged along the axial direction, the forward clutch engaging the forward gear and the reverse clutch engaging the reverse gear; a reversing shaft, on which a reversing idler gear meshes with the reverse gear; a power output shaft, on which a low gear, a low gear clutch, a high gear clutch, and a high gear are sequentially arranged along the axial direction, the low gear clutch engaging the low gear and the high gear clutch engaging the high gear; an intermediate shaft, on which a first gear and a second gear are arranged, the forward gear and the low gear both meshing with the first gear, and the second gear meshing with the high gear; and a reverse gear set, meshing with the reverse gear and used to transmit power to the power output shaft through the intermediate shaft.

[0005] In this embodiment of the utility model, the reverse gear set includes a third gear and a fourth gear. The third gear is disposed on the intermediate shaft, and the fourth gear is disposed on the power output shaft. The reversing idler gear and the fourth gear mesh with the third gear.

[0006] In this embodiment of the invention, the second gear is located between the first gear and the third gear along the axial direction of the intermediate shaft.

[0007] In this embodiment of the invention, the high-gear gear is located between the low-gear gear and the fourth gear along the axial direction of the power output shaft.

[0008] In this embodiment of the utility model, the power reversing high and low gear integrated module is used for the transmission gearbox, and the power input shaft, the reversing shaft, the power output shaft and the intermediate shaft are offset along the circumference of the transmission gearbox; and / or, the forward clutch and the reverse clutch share a clutch outer hub, and the high gear clutch and the low gear clutch share a clutch outer hub.

[0009] This utility model also proposes a transmission gearbox, which includes a main transmission module, a secondary transmission module, a creeper gear module, and a power reversing high / low gear integrated module as described above. The power reversing high / low gear integrated module, the main transmission module, the secondary transmission module, and the creeper gear module are axially connected to each other in the transmission gearbox.

[0010] In this embodiment of the invention, the main transmission module is a four-speed transmission module, the auxiliary transmission module is a three-speed transmission module, and the crawler transmission module is a two-speed transmission module.

[0011] In this embodiment of the present invention, the main transmission module includes: a main transmission gear, comprising a first-speed main gear set, a second-speed main gear set, a third-speed main gear set, and a fourth-speed main gear set arranged sequentially along the axial direction of the transmission gearbox; a main transmission output shaft, which is connected to the power output shaft via the main transmission gear, and a first main shifter is provided on the main transmission output shaft, with the first-speed main gear set or the second-speed main gear set arranged axially on both sides of the first main shifter, the first main shifter being used to engage the first-speed main gear set or the second-speed main gear set; and a second main shifter, which is provided on the power output shaft, with the third-speed main gear set and the fourth-speed main gear set arranged axially on both sides of the second main shifter, the second main shifter being used to engage the third-speed main gear set or the fourth-speed main gear set.

[0012] In this embodiment of the present invention, the auxiliary transmission module includes: an auxiliary transmission gear, comprising a low-gear gear set, a medium-gear gear set, and a high-gear gear set arranged axially along the transmission gearbox; an auxiliary transmission input shaft, which is drivenly connected to the main transmission output shaft via a first transmission gear set, and a first auxiliary shifter is provided on the auxiliary transmission input shaft, with the low-gear gear set and the medium-gear gear set axially disposed on both sides of the first auxiliary shifter; and an auxiliary transmission output shaft, which is drivenly connected to the auxiliary transmission input shaft via the auxiliary transmission gear, and a second auxiliary shifter is provided on the auxiliary transmission output shaft, the second auxiliary shifter being used to engage or disengage the high-gear gear set.

[0013] In this embodiment of the present invention, the creeper gear module includes: a creeper gear, comprising a second transmission gear set and a reduction and torque-increasing gear set arranged sequentially along the axial direction of the transmission gearbox; a creeper shifter, disposed on the auxiliary transmission output shaft, wherein the second transmission gear set and the reduction and torque-increasing gear set are disposed on both sides of the creeper shifter, and the creeper shifter is used to engage the second transmission gear set or the reduction and torque-increasing gear set; and a creeper output shaft, which is drivenly connected to the auxiliary transmission output shaft through the creeper gear.

[0014] Through the above technical solution, the power reversing high and low gear integrated module provided by this utility model embodiment has the following beneficial effects: The power reversing high / low gear integrated module integrates power high / low gear functions and power reversing functions through four shafts: power input shaft, reversing shaft, power output shaft, and intermediate shaft. Compared with the existing technology that sets power high / low gear and power reversing separately, this module improves the integration level. When high gear forward is needed, the forward clutch engages the forward gear, and the high gear clutch engages the high gear. Power from the power input shaft is transmitted to the intermediate shaft via the meshing of the forward gear and the first gear. Power from the intermediate shaft is then transmitted to the power output shaft via the meshing of the second gear and the high gear. When low gear forward is needed, the forward clutch engages the forward gear, and the low gear clutch engages the low gear. Power from the input shaft is transmitted to the intermediate shaft via the engagement of the forward gear and the first gear. Power from the intermediate shaft is then transmitted to the power output shaft via the engagement of the first gear and the low-gear gear. When reverse gear is required, the reverse clutch engages the reverse gear, while the high-gear and low-gear clutches are not engaged. Power from the input shaft is transmitted to the reversing shaft via the engagement of the reverse gear and the reversing idler gear, and then to the intermediate shaft via the reversing idler gear and the reverse gear set. Power from the intermediate shaft is then transmitted to the power output shaft via the reverse gear set. This allows for switching between three gears: high-gear forward, low-gear forward, and low-gear reverse. The reverse gear does not include a high-gear power shift, reducing unnecessary gears, simplifying driver operation, and lowering the risk of misoperation. The power reversing high / low gear integrated module in this utility model integrates high / low gears and forward / reverse gears through four shafts and four clutches. By adding a reverse gear set isolated from both the high-gear and reverse clutches, it eliminates the high-speed reverse gear, preventing misoperation, eliminating unnecessary gears, simplifying driver operation, and lowering the risk of misoperation.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of the power reversing high and low gear integrated module according to one embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram of the power reversing high and low gear integrated module according to one embodiment of the present utility model; Figure 3 This is a structural schematic diagram of a transmission gearbox according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The following description, with reference to the accompanying drawings, describes the power reversing high and low gear integrated module according to the present invention.

[0020] like Figure 1 As shown in the embodiment of this utility model, the power reversing high / low gear integrated module includes a power input shaft S1, a reversing shaft S4, a power output shaft S3, an intermediate shaft S2, and a reverse gear set. The power input shaft S1 is axially arranged with a forward gear 1, a forward clutch C1, a reverse clutch C2, and a reverse gear 5. The forward clutch C1 engages the forward gear 1, and the reverse clutch C2 engages the reverse gear 5. The reversing shaft S4 is equipped with a reversing idler wheel 4 that meshes with the reverse gear 5. The power output shaft... S3, arranged axially in sequence, includes a low-gear 3, a low-gear clutch C3, a high-gear clutch C4, and a high-gear 7. The low-gear clutch C3 engages the low-gear 3, and the high-gear clutch C4 engages the high-gear 7. Intermediate shaft S2, on which are arranged a first gear 2 and a second gear 6. The forward gear 1 and the low-gear 3 both mesh with the first gear 2, and the second gear 6 meshes with the high-gear 7. Reverse gear set, meshing with reverse gear 5, is used to transmit power through intermediate shaft S2 to power output shaft S3.

[0021] In this embodiment, the power reversing high / low gear integrated module integrates the power high / low gear function and the power reversing function through four shafts: power input shaft S1, reversing shaft S4, power output shaft S3, and intermediate shaft S2. Compared with the existing technology where power high / low gear and power reversing are set separately, this improves the integration level of the power reversing high / low gear integrated module. When high gear forward is required, the forward clutch C1 engages with the forward gear 1, and the high gear clutch C4 engages with the high gear 7. Power from the power input shaft S1 is transmitted to the intermediate shaft S2 via the engagement of the forward gear 1 and the first gear 2, and power from the intermediate shaft S2 is transmitted to the power output shaft S3 via the engagement of the second gear 6 and the high gear 7. When low gear forward is required, the forward clutch C1 engages with the forward gear 1, and the low gear clutch C3 engages with the low gear. 3. Power from the power input shaft S1 is transmitted to the intermediate shaft S2 via the engagement of the forward gear 1 and the first gear 2. Power from the intermediate shaft S2 is then transmitted to the power output shaft S3 via the engagement of the first gear 2 and the low gear 3. When reverse gear is required, the reverse clutch C2 engages with the reverse gear 5, while the high gear clutch C4 and the low gear clutch C3 do not need to operate. Power from the power input shaft S1 is transmitted to the reversing shaft S4 via the engagement of the reverse gear 5 and the reversing idler wheel 4, and then to the intermediate shaft S2 via the reversing idler wheel 4 and the reverse gear set. Power from the intermediate shaft S2 is then transmitted to the power output shaft S3 via the engagement of the reverse gear set. This allows for switching between three gears: high gear forward, low gear forward, and low gear reverse. The reverse gear does not include a high gear, reducing unnecessary gears, minimizing driver difficulty, and reducing the risk of misoperation. The power reversing high and low gear integrated module in this embodiment integrates high and low gears and forward and reverse gears through four shafts and four clutches. At the same time, by adding a reverse gear set that is isolated from both the high gear clutch C4 and the reverse gear clutch C2, the high-speed reverse gear is eliminated, which can avoid misoperation. While eliminating unnecessary gears, it can also reduce the difficulty of operation for the driver and reduce the risk of misoperation.

[0022] In one embodiment, the reverse gear set includes a third gear 6-1 and a fourth gear 7-1. The third gear 6-1 is located on the intermediate shaft S2, and the fourth gear 7-1 is located on the power output shaft S3. The reversing idler gear 4 and the fourth gear 7-1 both mesh with the third gear 6-1. In this embodiment, the reverse gear set includes two gears, with the third gear 6-1 located on the intermediate shaft S2 and the fourth gear 7-1 located on the power output shaft S3. When reverse gear is required, the reverse clutch C2 engages with the reverse gear 5, while the high-gear clutch C4 and the low-gear clutch C3 do not need to operate. Power from the power input shaft S1 is transmitted to the reversing shaft S4 via the reverse gear 5 and the reversing idler gear 4, and then to the intermediate shaft S2 via the reversing idler gear 4 and the third gear 6-1. Power from the intermediate shaft S2 is transmitted to the power output shaft S3 via the third gear 6-1 and the fourth gear 7-1. In this embodiment, a third gear 6-1 is set on the intermediate shaft S2, and a fourth gear 7-1 that meshes with the third gear 6-1 is set on the power output shaft S3, resulting in a simple structure.

[0023] It should be noted that the second gear 6 is located between the first gear 2 and the third gear 6-1 along the axial direction of the intermediate shaft S2. For example... Figure 1 As shown, the four shafts—power input shaft S1, reversing shaft S4, power output shaft S3, and intermediate shaft S2—are axially aligned and extend in the front-to-back direction. The first gear 2, the second gear 6, and the third gear 6-1 are arranged sequentially and alternately in the front-to-back direction, which ensures the structural compactness of the intermediate shaft S2.

[0024] Specifically, the high-gear 7 is located between the low-gear 3 and the fourth gear 7-1 along the axial direction of the power output shaft S3. The low-gear 3, high-gear 7, and fourth gear 7-1 are arranged sequentially in the front-rear direction, and the high-gear clutch C4 and low-gear clutch C3 are located between the low-gear 3 and high-gear 7. This makes the low-gear and high-gear structures of the fourth gear 7-1 independent of the forward gears, allowing the transmission ratio to be set according to the reverse gear requirements, and the structure is relatively compact.

[0025] In one embodiment, the power reversing high / low gear integrated module is used in the transmission gearbox, and the power input shaft S1, reversing shaft S4, power output shaft S3, and intermediate shaft S2 are offset circumferentially along the transmission gearbox. Figure 2As shown, the circumferential direction (including the vertical and horizontal directions) of the transmission gearbox is perpendicular to its axial direction (front-back direction). In this embodiment, the four shafts—power input shaft S1, reversing shaft S4, power output shaft S3, and intermediate shaft S2—adopt a four-axis spatial layout. This four-axis spatial layout allows for a more compact axial and longitudinal (circumferential) structure of the transmission gearbox, reducing its size and weight. Specifically, the power input shaft S1 and power output shaft S3 are positioned above the reversing shaft S4 and intermediate shaft S2 in the vertical direction, and are arranged sequentially in the horizontal direction. The reversing shaft S4 and intermediate shaft S2 are also arranged sequentially in the horizontal direction, with the intermediate shaft S2 positioned between the power input shaft S1 and power output shaft S3 in the horizontal direction. The four shafts—power input shaft S1, reversing shaft S4, power output shaft S3, and intermediate shaft S2—are not only staggered in the left-right direction but also in the up-down direction, which greatly improves the structural compactness of the four shafts. Compared with the existing technology where each shaft is connected sequentially along the axial direction, this method can save both the axial and circumferential space of the transmission gearbox.

[0026] Furthermore, the forward clutch C1 and reverse clutch C2 share a single clutch outer hub, as do the high-gear clutch C4 and low-gear clutch C3. The fact that the forward clutch C1 and reverse clutch C2 are housed together within the same clutch outer hub, and the high-gear clutch C4 and low-gear clutch C3 are housed together within the same clutch outer hub, allows the power reversing high / low gear integrated module in this embodiment to employ a four-clutch arrangement, with each pair sharing a single outer hub, saving axial dimensions and simplifying the components.

[0027] This utility model also proposes a transmission gearbox, which includes a main transmission module, a secondary transmission module, a creeper gear module, and the aforementioned power reversing high / low gear integrated module. The power reversing high / low gear integrated module, the main transmission module, the secondary transmission module, and the creeper gear module are axially connected. In one embodiment, the power reversing high / low gear integrated module, the main transmission module, the secondary transmission module, and the creeper gear module are sequentially axially connected, and the specific structure of the power reversing high / low gear integrated module is as described in the above embodiment. Since the transmission gearbox adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0028] The transmission gearbox in this embodiment includes a power reversing high and low gear integrated module, a main transmission module, an auxiliary transmission module, and a creeper gear module, which are sequentially connected along the axial direction of the transmission gearbox and can be set with different gears according to different usage requirements.

[0029] Specifically, the main transmission module is a four-speed transmission module, the auxiliary transmission module is a three-speed transmission module, and the crawler transmission module is a two-speed transmission module. For example... Figure 3 As shown, in one embodiment of the transmission gearbox, the main transmission module is a four-speed transmission module, the auxiliary transmission module is a three-speed transmission module, and the crawler gear module is a two-speed transmission module, which enables the transmission gearbox to have 48F (48 forward gears) + 24R (24 reverse gears), for a total of 72 gears, with a wider speed range and more flexible driving.

[0030] It should be noted that the main transmission module includes main transmission gears, a main transmission output shaft S5, and a second main shifter T2. The main transmission gears include a first-speed main gear set 8, a second-speed main gear set 9, a third-speed main gear set 10, and a fourth-speed main gear set 11 arranged sequentially along the axial direction of the transmission. The main transmission output shaft S5 is connected to the power output shaft S3 via the main transmission gears. A first main shifter T1 is installed on the main transmission output shaft S5. The first-speed main gear set 8 or the second-speed main gear set 9 is arranged axially on both sides of the first main shifter T1, and the first main shifter T1 is used to engage the first-speed main gear set 8 or the second-speed main gear set 9. The second main shifter T2 is installed on the power output shaft S3. The third-speed main gear set 10 and the fourth-speed main gear set 11 are arranged axially on both sides of the second main shifter T2, and the second main shifter T2 is used to engage the third-speed main gear set 10 or the fourth-speed main gear set 11.

[0031] In this embodiment, the main transmission module and the power reversing high / low gear integrated module share the power output shaft S3, which can save transmission components. Furthermore, a first main shifter T1 and a second main shifter T2 are respectively set on the power output shaft S3 and the main transmission output shaft S5. The first main shifter T1 and the second main shifter T2 are arranged axially and spaced apart along the transmission gearbox, which can make full use of the axial space of the transmission gearbox. The first main shifter T1 is located close to the power reversing high / low gear integrated module. The first gear main gear set 8, the second gear main gear set 9, the third gear main gear set 10 and the fourth gear main gear set 11 each include two gears. One of the two gears is set on the power output shaft S3 and the other gear is set on the main transmission output shaft S5. The structure is simple and compact with a high degree of integration.

[0032] In this embodiment of the invention, the auxiliary transmission module includes auxiliary transmission gears, an auxiliary transmission input shaft S6, and an auxiliary transmission output shaft S7. The auxiliary transmission gears include a low-gear gear set 13, a medium-gear gear set 14, and a high-gear gear set 15 arranged axially along the transmission gearbox. In one embodiment, the low-gear gear set 13, the medium-gear gear set 14, and the high-gear gear set 15 can be arranged axially along the transmission gearbox. The auxiliary transmission input shaft S6 is connected to the main transmission output shaft S5 via a first transmission gear set 12. A first auxiliary shifter T3, the low-gear gear set 13, and the medium-gear gear set T7 are mounted on the auxiliary transmission input shaft S6. Group 14 is axially distributed on both sides of the first auxiliary shifter T3; the auxiliary transmission output shaft S7 is connected to the auxiliary transmission input shaft S6 via auxiliary transmission gears, and a second auxiliary shifter T4 is provided on the auxiliary transmission output shaft S7. In one embodiment, the high gear group 15 is located on the side of the second auxiliary shifter T4 away from the first auxiliary shifter T3, and the second auxiliary shifter T4 is used to engage or disengage the high gear group 15. In another embodiment, the high gear group 15 and the second auxiliary shifter T4 can be interchanged, so that the second auxiliary shifter T4 is located on the side of the high gear group 15 away from the intermediate gear group 14.

[0033] In this embodiment, the auxiliary transmission module can share the auxiliary transmission output shaft S7 with the creeper transmission module. The auxiliary transmission output shaft S7 serves as both the output shaft and the input shaft of the creeper transmission module, saving transmission components. In this embodiment, the first auxiliary shifter T3 and the second auxiliary shifter T4 are respectively located on the auxiliary transmission input shaft S6 and the auxiliary transmission output shaft S7, and are arranged sequentially along the axial direction of the transmission gearbox, making full use of the axial space of the auxiliary transmission module. In this embodiment, the low-gear set 13, the medium-gear set 14, and the high-gear set 15 each include two gears. One of the two gears is located on the auxiliary transmission input shaft S6, and the other gear is located on the auxiliary transmission output shaft S7. The first transmission gear set 12 includes two gears. One gear of the first transmission gear set 12 is located on the main transmission output shaft S5, and the other gear is located on the auxiliary transmission input shaft S6. The structure is simple and compact with a high degree of integration.

[0034] In this embodiment of the utility model, the crawling gear module includes a crawling gear, a crawling shifter T5, and a crawling output shaft S8. The crawling gear includes a second transmission gear set 16 and a reduction and torque-increasing gear set 17 arranged sequentially along the axial direction of the transmission gearbox. The crawling shifter T5 is disposed on the auxiliary transmission output shaft S7. The second transmission gear set 16 and the reduction and torque-increasing gear set 17 are respectively disposed on both sides of the crawling shifter T5. The crawling shifter T5 is used to engage the second transmission gear set 16 or the reduction and torque-increasing gear set 17. The crawling output shaft S8 is connected to the auxiliary transmission output shaft S7 through the crawling gear.

[0035] In this embodiment, both the second transmission gear set 16 and the reduction and torque amplification gear set 17 include two gears. One of the two gears is located on the secondary transmission output shaft S7, and the other gear is located on the crawling output shaft S8. When no reduction or torque amplification is required, the crawling shifter T5 can engage with the second transmission gear set 16. Without reduction, the power on the secondary transmission output shaft S7 can be transmitted to the crawling output shaft S8 via the second transmission gear set 16. When a larger torque is required, the crawling shifter T5 can engage with the reduction and torque amplification gear set 17. The transmission ratio of the reduction and torque amplification gear set 17 can be set as needed, so that the power on the secondary transmission output shaft S7 is reduced and amplified before being transmitted to the crawling output shaft S8. The structure is simple, and the transmission gearbox can meet different operating conditions, both requiring and not requiring reduction.

[0036] It should be noted that the first main shifter T1, the second main shifter T2, the first auxiliary shifter T3, the second auxiliary shifter T4, and the crawler shifter T5 can use synchronizers, shift sleeves, or sliding gears to complete the shifting.

[0037] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power reversing high / low gear integrated module, characterized in that, The power reversing high / low gear integrated module includes: The power input shaft (S1) is provided with a forward gear (1), a forward clutch (C1), a reverse clutch (C2) and a reverse gear (5) in sequence along the axial direction. The forward clutch (C1) is used to engage the forward gear (1), and the reverse clutch (C2) is used to engage the reverse gear (5). The reversing shaft (S4) is provided with a reversing idler wheel (4) that meshes with the reverse gear (5); The power output shaft (S3) is provided with a low gear (3), a low gear clutch (C3), a high gear clutch (C4), and a high gear (7) in sequence along the axial direction. The low gear clutch (C3) is used to engage the low gear (3), and the high gear clutch (C4) is used to engage the high gear (7). An intermediate shaft (S2) is provided with a first gear (2) and a second gear (6). The forward gear (1) and the low gear (3) both mesh with the first gear (2), and the second gear (6) meshes with the high gear (7). The reverse gear set, and the reverse gear (5) mesh together to transmit power through the intermediate shaft (S2) to the power output shaft (S3).

2. The power reversing high / low gear integrated module according to claim 1, characterized in that, The reverse gear set includes a third gear (6-1) and a fourth gear (7-1). The third gear (6-1) is mounted on the intermediate shaft (S2), and the fourth gear (7-1) is mounted on the power output shaft (S3). The reversing idler wheel (4) and the fourth gear (7-1) both mesh with the third gear (6-1).

3. The power reversing high / low gear integrated module according to claim 2, characterized in that, The second gear (6) is located between the first gear (2) and the third gear (6-1) along the axial direction of the intermediate shaft (S2).

4. The power reversing high / low gear integrated module according to claim 2, characterized in that, The high gear (7) is located between the low gear (3) and the fourth gear (7-1) along the axial direction of the power output shaft (S3).

5. The power reversing high / low gear integrated module according to any one of claims 1 to 4, characterized in that, The power reversing high and low gear integrated module is used for the transmission gearbox, and the power input shaft (S1), the reversing shaft (S4), the power output shaft (S3) and the intermediate shaft (S2) are offset along the circumference of the transmission gearbox; And / or, The forward clutch (C1) and the reverse clutch (C2) share a single clutch hub, and the high-gear clutch (C4) and the low-gear clutch (C3) share a single clutch hub.

6. A transmission gearbox, characterized in that, The transmission gearbox includes a main transmission module, a secondary transmission module, a creeper gear module, and a power reversing high / low gear integrated module as described in any one of claims 1 to 5. The power reversing high / low gear integrated module, the main transmission module, the secondary transmission module, and the creeper gear module are axially connected to the transmission gearbox.

7. The transmission gearbox according to claim 6, characterized in that, The main transmission module is a four-speed transmission module, the auxiliary transmission module is a three-speed transmission module, and the crawler transmission module is a two-speed transmission module.

8. The transmission gearbox according to claim 7, characterized in that, The main transmission module includes: The main transmission gear includes a first-speed main gear set (8), a second-speed main gear set (9), a third-speed main gear set (10), and a fourth-speed main gear set (11) arranged sequentially along the axial direction of the transmission gearbox. The main transmission output shaft (S5) is connected to the main transmission gear and the power output shaft (S3) through transmission. A first main shifter (T1) is provided on the main transmission output shaft (S5). The first gear main gear set (8) or the second gear main gear set (9) is arranged axially on both sides of the first main shifter (T1). The first main shifter (T1) is used to engage the first gear main gear set (8) or the second gear main gear set (9). The second master shifter (T2) is disposed on the power output shaft (S3). The three-speed master gear set (10) and the four-speed master gear set (11) are disposed axially on both sides of the second master shifter (T2). The second master shifter (T2) is used to engage the three-speed master gear set (10) or the four-speed master gear set (11).

9. The transmission gearbox according to claim 8, characterized in that, The auxiliary transmission module includes: The auxiliary transmission gear includes a low-gear set (13), a medium-gear set (14), and a high-gear set (15) arranged along the axial direction of the transmission gearbox. The auxiliary transmission input shaft (S6) is connected to the main transmission output shaft (S5) via the first transmission gear set (12). The auxiliary transmission input shaft (S6) is provided with a first auxiliary shifter (T3). The low gear set (13) and the medium gear set (14) are axially arranged on both sides of the first auxiliary shifter (T3). The auxiliary transmission output shaft (S7) is connected to the auxiliary transmission input shaft (S6) via an auxiliary transmission gear. A second auxiliary shifter (T4) is provided on the auxiliary transmission output shaft (S7). The second auxiliary shifter (T4) is used to engage or disengage the high-gear set (15).

10. The transmission gearbox according to claim 9, characterized in that, The crawling block module includes: The crawling gear includes a second transmission gear set (16) and a reduction and torque increasing gear set (17) arranged sequentially along the axial direction of the transmission gearbox. A creeper shifter (T5) is disposed on the secondary transmission output shaft (S7). The second transmission gear set (16) and the reduction and torque increasing gear set (17) are disposed on both sides of the creeper shifter (T5). The creeper shifter (T5) is used to engage the second transmission gear set (16) or the reduction and torque increasing gear set (17). The crawling output shaft (S8) is connected to the crawling gear and the secondary transmission output shaft (S7) via a transmission.

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