Transmission gearbox with braking function

Abstract

The utility model discloses a transmission gearbox with a braking function, which comprises a torque converter shell, a main box body and a transmission box body, the torque converter shell and the transmission box body are respectively fixed on the main box body, an input shaft is arranged in the torque converter shell, a transmission mechanism and a braking mechanism are arranged in the main box body, an output shaft is arranged in the transmission box body, and the output shaft is connected with the main box body. A first output flange is fixedly arranged at one end of the output shaft, a second output flange is rotatably arranged at the other end of the output shaft, a clutch mechanism for connecting and separating the output shaft and the second output flange is arranged between the output shaft and the second output flange, the input shaft is in transmission connection with the output shaft through the transmission mechanism, and the brake mechanism is used for braking the transmission mechanism. According to the transmission gearbox with the braking function, the parking safety is improved, two-wheel drive and four-wheel drive can be switched, and the adaptability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission gearbox technical field, concretely relates to a transmission gearbox with brake function. BACKGROUND

[0002] The forklift needs to transmit power to the running wheel through the transmission gearbox, and the existing transmission gearbox generally cannot meet the safety driving requirements of the forklift. For example, the rear multi-gear four-wheel drive off-road forklift gearbox with the application number 202110635105.4 has the following problems: on the one hand, it does not have a brake mechanism inside, and only relies on the running wheel for braking, which is not safe when parking; on the other hand, it has an output shaft and a bridge shaft, which meets the driving requirements of four-wheel drive, but it is difficult to change between two-wheel drive and four-wheel drive, and it has poor adaptability. SUMMARY

[0003] The utility model solves the technical problem of the prior art, provides a transmission gearbox with brake function, which improves the safety of parking, can change between two-wheel drive and four-wheel drive, and has strong adaptability.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A transmission gearbox with brake function, comprising a torque converter housing, a main box body and a transmission box body, the torque converter housing and the transmission box body are fixed on the main box body, the torque converter housing is provided with an input shaft, the main box body is provided with a transmission mechanism and a brake mechanism, the transmission box body is provided with an output shaft, one end of the output shaft is fixedly provided with a first output flange, the other end is rotatably provided with a second output flange, a clutch mechanism for connecting and separating the output shaft and the second output flange is arranged between the output shaft and the second output flange, the input shaft is in transmission connection with the output shaft through the transmission mechanism, and the brake mechanism is used for braking the transmission mechanism.

[0006] As a further improvement of the above technical scheme:

[0007] The brake mechanism comprises a brake shaft and a brake assembly, the brake shaft is rotatably arranged in the main box body, the brake assembly is connected with the brake shaft and used for braking the brake shaft, and the brake shaft is in transmission connection with the transmission mechanism.

[0008] The transmission mechanism comprises an R-gear transmission shaft, an F-gear transmission shaft and a first idler shaft which are arranged in parallel with each other in the main box body, one end of the input shaft is connected with the R-gear transmission shaft, the R-gear transmission shaft is rotatably sleeved with an R I-gear and an R II-gear, and a first transmission gear is fixedly arranged on the R-gear transmission shaft; the F-gear transmission shaft is rotatably sleeved with an F I-gear and an F II-gear, and a second transmission gear is fixedly arranged on the F-gear transmission shaft; the first idler shaft is fixedly arranged with a first idler, a second idler and a third idler; a brake gear is fixedly arranged on the brake shaft, and an output gear is fixedly arranged on the output shaft; a fourth idler is further arranged in the main box body; an R I-gear clutch is arranged between the R I-gear and the R-gear transmission shaft, an R II-gear clutch is arranged between the R II-gear and the R-gear transmission shaft, an F I-gear clutch is arranged between the F I-gear and the F-gear transmission shaft, and an F II-gear clutch is arranged between the F II-gear and the F-gear transmission shaft; the R I-gear, the F I-gear and the brake gear are all in mesh with the first idler, the R II-gear and the F II-gear are all in mesh with the third idler, and the second idler and the output gear are both in mesh with the fourth idler.

[0009] The input shaft and the R-gear transmission shaft are coaxially arranged and connected through splines.

[0010] The output shaft is parallel to the input shaft.

[0011] An electro-hydraulic control valve assembly is arranged on the main box body, and the F I-gear clutch, the F II-gear clutch, the R I-gear clutch and the F II-gear clutch are all connected with the electro-hydraulic control valve assembly through oil lines.

[0012] The clutch mechanism comprises a fixed engagement sleeve, a movable engagement sleeve and a pulling assembly, the fixed engagement sleeve is fixedly arranged on the output shaft, the movable engagement sleeve is rotatably sleeved on the output shaft and can move axially along the output shaft, the movable engagement sleeve is connected with the second output flange through splines, and the pulling assembly is arranged on the transmission box body and used for driving the movable engagement sleeve to move to engage with and separate from the fixed engagement sleeve.

[0013] A hydraulic torque converter assembly is arranged on the input shaft.

[0014] A fuel pump assembly, a pump transmission gear and a second idler shaft are arranged on the main box body, the second idler shaft is fixedly arranged with a fifth idler, a hydraulic torque converter gear is arranged on the input shaft, the hydraulic torque converter gear and the pump transmission gear are both in mesh with the fifth idler, and the fuel pump assembly and the pump transmission gear are drivingly connected.

[0015] The torque converter housing is located at one side of the main box body, and the transmission box body is located at the bottom of the main box body.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a transmission gearbox with brake function, when using, the front row walking wheel or rear row walking wheel of forklift is connected with the first output flange transmission. On the one hand, because the brake mechanism is equipped in the main box, is used for brake transmission mechanism, thereby stops transmission mechanism and transmits power to the walking wheel, stops forklift and stops, improves the security of stopping. On the other hand, the second output flange is connected with the output shaft through the clutch mechanism, when using, the first output flange and the second output flange are respectively connected with the front row walking wheel and the rear row walking wheel transmission, when the output shaft is separated from the second output flange, the front row walking wheel or rear row walking wheel is driven, that is two drive drive, when the output shaft is combined with the second output flange, the front row walking wheel and the rear row walking wheel are all driven, that is four drive drive, improves the cross-country ability of forklift, that is to say, can carry out two drive and four drive conversion, and the adaptability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the main view structural schematic diagram of the transmission gearbox with brake function of the utility model.

[0019] Figure 2 It is Figure 1 The sectional view structural schematic diagram of A-A in it.

[0020] Figure 3 It is Figure 1 The sectional view structural schematic diagram of K-K in it.

[0021] Figure 4 It is the structural schematic diagram of transmission box body of the transmission gearbox with brake function of the utility model.

[0022] Figure 5 It is Figure 4 The sectional view structural schematic diagram of F-F in it.

[0023] Figure 6 It is Figure 5 The sectional view structural schematic diagram of Q-Q in it.

[0024] The various reference numerals in the drawing represent:

[0025] 1, torque converter housing; 10, R I gear; 11, R II gear; 12, R I clutch; 13, R II clutch; 14, F I gear; 15, F II gear; 16, F I clutch; 17, F II clutch; 18, first idler shaft; 19, first idler; 2, main case; 20, second idler; 21, third idler; 22, brake shaft; 23, brake gear; 24, brake assembly; 26, fourth idler; 27, output shaft; 28, output gear; 29, first output flange; 3, transmission case; 30, fixed engagement sleeve; 31, movable engagement sleeve; 32, second output flange; 33, puller assembly; 331, puller fork; 332, telescopic rod; 333, spring; 39, oil supply pump assembly; 4, electro-hydraulic control valve assembly; 46, torque converter assembly; 47, torque converter gear; 48, second idler shaft; 49, fifth idler; 5, input shaft; 50, pump drive gear; 6, R gear drive shaft; 7, F gear drive shaft; 8, first drive gear; 9, second drive gear. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0027] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] In the utility model, unless another definite provision and limitation, the terms "assemble", "connect", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, the above terms can be understood according to the specific meaning in the utility model.

[0030] Embodiment one:

[0031] Figures 1 to 5 An embodiment of the transmission gearbox with braking function of the utility model is shown, the transmission gearbox with braking function of this embodiment, including variator shell 1, main box 2 and transmission box 3, variator shell 1 and transmission box 3 are fixed on main box 2 respectively, input shaft 5 is arranged in variator shell 1, transmission mechanism and brake mechanism are arranged in main box 2, output shaft 27 is arranged in transmission box 3, first output flange 29 is fixedly arranged on one end of output shaft 27, second output flange 32 is rotatably arranged on the other end of output shaft 27, clutch mechanism for connecting and separating the both between output shaft 27 and second output flange 32, input shaft 5 is drivingly connected with output shaft 27 through transmission mechanism, brake mechanism is used for braking transmission mechanism.

[0032] When using, the front row running wheel or rear row running wheel of the forklift is drivingly connected with first output flange 29. On the one hand, since brake mechanism is arranged in main box 2, it is used for braking transmission mechanism, so as to prevent transmission mechanism from transmitting power to running wheel, stop forklift, improve the safety of parking;On the other hand, second output flange 32 and output shaft 27 are connected through clutch mechanism, when using, first output flange 29 and second output flange 32 are drivingly connected with front row running wheel and rear row running wheel respectively, when output shaft 27 is separated from second output flange 32, front row running wheel or rear row running wheel is driven, that is two drive driving, when output shaft 27 is combined with second output flange 32, front row running wheel and rear row running wheel are driven, that is four drive driving, improve the cross-country ability of forklift, that is to say, two drive and four drive can be changed, and the adaptability is strong.

[0033] Further, in the embodiment, brake mechanism includes brake shaft 22 and brake assembly 24, brake shaft 22 is rotatably arranged in main box 2, brake assembly 24 is connected with brake shaft 22, and is used for braking brake shaft 22, brake shaft 22 is drivingly connected with transmission mechanism. Brake assembly 24 is a conventional assembly with braking function, such as including brake disc connected with brake shaft 22 and brake mechanism matched with brake disc, brake disc is braked through brake mechanism, so as to brake brake shaft 22, thereby braking transmission mechanism.

[0034] Further, in the embodiment, the transmission mechanism comprises R-gear transmission shaft 6, F-gear transmission shaft 7 and first idler shaft 18 which are arranged in parallel with each other in the main box 2, one end of the input shaft 5 is connected with the R-gear transmission shaft 6, the R-gear transmission shaft 6 is rotatably sleeved with RⅠ-gear 10 and RⅡ-gear 11, and the first transmission gear 8 is fixedly arranged on the R-gear transmission shaft 6; the F-gear transmission shaft 7 is rotatably sleeved with FⅠ-gear 14 and FⅡ-gear 15, and the second transmission gear 9 is fixedly arranged on the F-gear transmission shaft 7; the first idler shaft 18 is fixedly arranged with first idler 19, second idler 20 and third idler 21; the brake shaft 22 is fixedly arranged with brake gear 23, and the output shaft 27 is fixedly arranged with output gear 28; the fourth idler 26 is further arranged in the main box 2; the RⅠ-gear 10 and the R-gear transmission shaft 6 are arranged with RⅠ-gear clutch 12, the RⅡ-gear 11 and the R-gear transmission shaft 6 are arranged with RⅡ-gear clutch 13, the FⅠ-gear 14 and the F-gear transmission shaft 7 are arranged with FⅠ-gear clutch 16, and the FⅡ-gear 15 and the F-gear transmission shaft 7 are arranged with FⅡ-gear clutch 17; the RⅠ-gear 10, the FⅠ-gear 14 and the brake gear 23 are all in mesh with the first idler 19, the RⅡ-gear 11 and the FⅡ-gear 15 are all in mesh with the third idler 21, and the second idler 20 and the output gear 28 are both in mesh with the fourth idler 26.

[0035] Forward I-gear: the input shaft 5 rotates, the input shaft 5 drives the R-gear transmission shaft 6 to rotate, the R-gear transmission shaft 6 drives the first transmission gear 8 to rotate through the RⅠ-gear clutch 12, the first transmission gear 8 drives the second transmission gear 9 to rotate, the second transmission gear 9 drives the F-gear transmission shaft 7 to rotate, the F-gear transmission shaft 7 drives the FⅠ-gear 14 to rotate through the FⅠ-gear clutch 16, the FⅠ-gear 14 drives the first idler 19 to rotate, the first idler 19 drives the first idler shaft 18 to rotate, the first idler shaft 18 drives the second idler 20 to rotate, the second idler 20 drives the fourth idler 26 to rotate, the fourth idler 26 drives the output gear 28 to rotate, the output gear 28 drives the output shaft 27 to rotate, and the output shaft 27 drives the first output flange 29 to rotate.

[0036] Forward II-gear: the input shaft 5 rotates, the input shaft 5 drives the R-gear transmission shaft 6 to rotate, the R-gear transmission shaft 6 drives the first transmission gear 8 to rotate, the first transmission gear 8 drives the second transmission gear 9 to rotate, the second transmission gear 9 drives the F-gear transmission shaft 7 to rotate, the F-gear transmission shaft 7 drives the FⅡ-gear 15 to rotate through the FⅡ-gear clutch 17, the FⅡ-gear 15 drives the third idler 21 to rotate, the third idler 21 drives the first idler shaft 18 to rotate, the first idler shaft 18 drives the second idler 20 to rotate, the second idler 20 drives the fourth idler 26 to rotate, the fourth idler 26 drives the output gear 28 to rotate, the output gear 28 drives the output shaft 27 to rotate, and the output shaft 27 drives the first output flange 29 to rotate.

[0037] Rear I gear: the input shaft 5 rotates, the input shaft 5 drives the R gear transmission shaft 6 to rotate, the R gear transmission shaft 6 rotates through the R I clutch 12 to drive the R I gear to rotate 10, the R I gear 10 drives the first idler 19 to rotate, the first idler 19 drives the first idler shaft 18 to rotate, the first idler shaft 18 drives the second idler 20 to rotate, the second idler 20 drives the fourth idler 26 to rotate, the fourth idler 26 drives the output gear 28 to rotate, the output gear 28 drives the output shaft 27 to rotate, and the output shaft 27 drives the first output flange 29 to rotate.

[0038] Rear II gear: the input shaft 5 rotates, the input shaft 5 drives the R gear transmission shaft 6 to rotate, the R gear transmission shaft 6 rotates through the R II clutch 13 to drive the R II gear to rotate 11, the R II gear 11 drives the third idler 21 to rotate, the third idler 21 drives the second idler 20 to rotate, the second idler 20 drives the fourth idler 26 to rotate, the fourth idler 26 drives the output gear 28 to rotate, the output gear 28 drives the output shaft 27 to rotate, and the output shaft 27 drives the first output flange 29 to rotate.

[0039] Further, in the embodiment, the input shaft 5 and the R gear transmission shaft 6 are coaxially arranged and connected through splines. Preferably, the first transmission gear 8 is connected with the R gear transmission shaft 6 through splines; the second transmission gear 9 is connected with the F gear transmission shaft 7 through splines; the first idler 19, the second idler 20 and the fourth idler 26 are all connected with the first idler shaft 18 through splines.

[0040] Further, as shown in the drawings, Figure 2 In the embodiment, the output shaft 27 is parallel to the input shaft 5. The structure arrangement is reasonable.

[0041] Further, in the embodiment, the clutch mechanism includes a fixed engagement sleeve 30, a movable engagement sleeve 31 and a pulling assembly 33. The fixed engagement sleeve 30 is fixedly arranged on the output shaft 27. The movable engagement sleeve 31 is rotatably arranged on the output shaft 27 and can move axially along the output shaft 27. The movable engagement sleeve 31 is connected with the second output flange 32 through splines. The pulling assembly 33 is arranged on the transmission case 3 and is used to drive the movable engagement sleeve 31 to move to engage and disengage with the fixed engagement sleeve 30.

[0042] When the pulling assembly 33 drives the movable engagement sleeve 31 to move to engage with the fixed engagement sleeve 30, it is four-wheel drive, that is, all four wheels of the forklift are driven. When the pulling assembly 33 drives the movable engagement sleeve 31 to move to disengage with the fixed engagement sleeve 30, it is two-wheel drive.

[0043] Further, as shown in the drawings, Figures 3 to 6As shown, the pulling assembly 33 comprises a pulling fork 331, a telescopic rod 332 and a spring 333, the pulling fork 331 is sleeved on the moving engagement sleeve 31, the telescopic rod 332 is arranged in the transmission box body 3, the telescopic end of the telescopic rod 332 is connected with the pulling fork 331, the pulling fork 331 is driven to move, and the spring 333 is arranged between the telescopic end of the telescopic rod 332 and the transmission box body 3 and is used for resetting the pulling fork 331.

[0044] Preferably, the output gear 28 is connected with the output shaft 27 through the spline; the output shaft 27 is connected with the first output flange 29 through the spline; the moving engagement sleeve 31 is connected with the second output flange 32 through the spline; and the fixed engagement sleeve 30 is connected with the moving engagement sleeve 31 through the engagement teeth.

[0045] Further, in the embodiment, the input shaft 5 is provided with a hydraulic torque converter assembly 46. The hydraulic torque converter assembly 46 is a commercially available part.

[0046] In the embodiment, the torque converter shell 1 is located on one side of the main box body 2, and the transmission box body 3 is located at the bottom of the main box body 2.

[0047] Embodiment two:

[0048] Figure 1 And Figure 2 Further, another embodiment of the transmission gearbox with the brake function is shown, the structure of the embodiment is basically same as that of the embodiment one, and the difference is that the main box body 2 is provided with an oil supply pump assembly 39, a pump transmission gear 50 and a second idler shaft 48, the fifth idler 49 is fixedly arranged on the second idler shaft 48, the input shaft 5 is provided with a hydraulic torque converter gear 47, the hydraulic torque converter gear 47 and the pump transmission gear 50 are engaged with the fifth idler 49, and the oil supply pump assembly 39 and the pump transmission gear 50 are in transmission connection.

[0049] Embodiment three:

[0050] Figure 1 And Figure 2 Further, another embodiment of the transmission gearbox with the brake function is shown, the structure of the embodiment is basically same as that of the embodiment one or the embodiment two, and the difference is that the main box body 2 is provided with an electro-hydraulic control valve assembly 4, the FⅠ clutch 16, the FⅡ clutch 17, the RⅠ clutch 12 and the FⅡ clutch 17 are connected with the electro-hydraulic control valve assembly 4 through the oil circuit.

[0051] The electro-hydraulic control valve assembly 4 is used for controlling the clutching actions of the FⅠ clutch 16, the FⅡ clutch 17, the RⅠ clutch 12 and the FⅡ clutch 17.

[0052] Further, the telescopic rod 332 is connected with the electro-hydraulic control valve assembly 4 through the oil circuit.

[0053] Although the utility model has disclosed as above with preferable embodiments, however, it is not used to limit the utility model. Any skilled person in the art, without departing from the technical scheme range of the utility model, can utilize the above disclosed technical content to make many possible changes and modifications to the utility model technical scheme, or modify as equivalent variation equivalent embodiment. Therefore, any simple modification, equivalent variation and modification made to the above embodiments according to the technical essence of the utility model, which does not depart from the content of the technical scheme of the utility model, should fall within the protection scope of the technical scheme of the utility model.

Claims

1. A drive transmission with a brake function, characterized in that: The application relates to a torque converter, which comprises a torque converter shell (1), a main box (2) and a transmission box (3), the torque converter shell (1) and the transmission box (3) are fixed on the main box (2) respectively, an input shaft (5) is arranged in the torque converter shell (1), a transmission mechanism and a brake mechanism are arranged in the main box (2), an output shaft (27) is arranged in the transmission box (3), a first output flange (29) is fixed on one end of the output shaft (27), a second output flange (32) is rotatably arranged on the other end of the output shaft (27), a clutch mechanism for connecting and separating the output shaft (27) and the second output flange (32) is arranged between the output shaft (27) and the second output flange (32), the input shaft (5) is in transmission connection with the output shaft (27) through the transmission mechanism, and the brake mechanism is used for braking the transmission mechanism.

2. The transmission gearbox with a brake function according to claim 1, characterized in that: The brake mechanism comprises a brake shaft (22) and a brake assembly (24), the brake shaft (22) is rotatably arranged in the main box (2), the brake assembly (24) is connected with the brake shaft (22) and is used for braking the brake shaft (22), and the brake shaft (22) is in transmission connection with the transmission mechanism.

3. The transmission gearbox with a brake function according to claim 2, characterized in that: The transmission mechanism comprises an R-gear transmission shaft (6), an F-gear transmission shaft (7) and a first idler shaft (18) which are arranged in the main box (2) and are parallel to each other, one end of the input shaft (5) is connected with the R-gear transmission shaft (6), R I-gear (10) and R II-gear (11) are rotatably arranged on the R-gear transmission shaft (6), a first transmission gear (8) is fixed on the R-gear transmission shaft (6), F I-gear (14) and F II-gear (15) are rotatably arranged on the F-gear transmission shaft (7), a second transmission gear (9) is fixed on the F-gear transmission shaft (7), a first idler (19), a second idler (20) and a third idler (21) are fixed on the first idler shaft (18), a brake gear (23) is fixed on the brake shaft (22), an output gear (28) is fixed on the output shaft (27), a fourth idler (26) is further arranged in the main box (2), R I-gear (10) and the R-gear transmission shaft (6) are provided with an R I-gear clutch (12), R II-gear (11) and the R-gear transmission shaft (6) are provided with an R II-gear clutch (13), F I-gear (14) and the F-gear transmission shaft (7) are provided with an F I-gear clutch (16), F II-gear (15) and the F-gear transmission shaft (7) are provided with an F II-gear clutch (17), the R I-gear (10), the F I-gear (14) and the brake gear (23) are all in meshing connection with the first idler (19), the R II-gear (11) and the F II-gear (15) are all in meshing connection with the third idler (21), the second idler (20) and the output gear (28) are all in meshing connection with the fourth idler (26).

4. The transmission gearbox with a brake function according to claim 3, characterized in that: The input shaft (5) and the R-gear transmission shaft (6) are coaxially arranged and are connected through splines.

5. The transmission gearbox with a brake function according to claim 3, characterized in that: The output shaft (27) is parallel to the input shaft (5).

6. The transmission gearbox with a brake function according to claim 3, characterized in that: The main box (2) is provided with an electro-hydraulic control valve assembly (4), the FⅠ clutch (16), the FⅡ clutch (17), the RⅠ clutch (12) and the FⅡ clutch (17) are connected with the electro-hydraulic control valve assembly (4) through an oil circuit.

7. A drive gearbox with a braking function according to any one of claims 1 to 6, characterized in that: The clutch mechanism comprises a fixed engagement sleeve (30), a movable engagement sleeve (31) and a pulling assembly (33), the fixed engagement sleeve (30) is fixed on the output shaft (27), the movable engagement sleeve (31) is rotatably sleeved on the output shaft (27) and can move axially along the output shaft (27), and the movable engagement sleeve (31) is connected with the second output flange (32) through a spline, the pulling assembly (33) is arranged on the transmission box body (3) and is used for driving the movable engagement sleeve (31) to move to engage and separate from the fixed engagement sleeve (30).

8. A drive gearbox with a braking function according to any one of claims 1 to 6, characterized in that: The input shaft (5) is provided with a hydraulic torque converter assembly (46).

9. The transmission gearbox with a braking function according to claim 8, characterized in that: The main box (2) is provided with an oil pump assembly (39), a pump transmission gear (50) and a second idler shaft (48), the fifth idler (49) is fixed on the second idler shaft (48), the input shaft (5) is provided with a hydraulic torque converter gear (47), the hydraulic torque converter gear (47) and the pump transmission gear (50) are engaged with the fifth idler (49), and the oil pump assembly (39) and the pump transmission gear (50) are drivingly connected.

10. The transmission gearbox with a braking function according to any one of claims 1 to 6, characterized in that: The torque converter housing (1) is located on one side of the main box (2), and the transmission box body (3) is located at the bottom of the main box (2).

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