Gearbox power assembly and engineering machinery

Abstract

The utility model belongs to the technical field of engineering machinery, and discloses a gearbox power assembly and engineering machinery. The gearbox power assembly comprises a motor, an input shaft, a first reduction gear set, a planet row, a clutch, a second reduction gear set and an output shaft, and the input shaft is connected with a motor shaft; the input shaft is fixedly sleeved with the first gear, and the intermediate shaft is fixedly sleeved with the second gear. A sun gear of the planet row is fixedly sleeved on the intermediate shaft; the clutch assembly comprises a first clutch and a second clutch, the first clutch is used for combining or disconnecting a gear ring and a gearbox shell, and the second clutch is used for combining or disconnecting a sun gear and a planet carrier of the planet row; the third gear is connected with the planet carrier, and the fourth gear fixedly sleeves the output shaft. According to the gearbox power assembly, the gear set, the planet row and the clutch are combined, gear shifting is achieved by controlling the clutch, the structure is simple, and operation is easy and convenient; and meanwhile, the requirements of low-speed high torque and high-speed low torque can be met.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a gearbox powertrain and engineering machinery. Background Technology

[0002] With the continuous development of electric loaders, the efficiency, lightweighting, and low cost of their powertrains have become important goals. Among related technologies, multi-speed gearboxes are complex in structure, occupy a large space, and are expensive; while single-speed reducers, although simple in structure, cannot simultaneously meet the needs of low-speed high torque and high-speed low torque. Utility Model Content

[0003] The purpose of this utility model is to provide a gearbox powertrain and engineering machinery that has a simple structure, is easy to operate, and can meet the needs of low-speed high torque and high-speed low torque.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The transmission powertrain includes:

[0006] Electric motor;

[0007] The input shaft is connected to the motor shaft of the motor;

[0008] The first reduction gear set includes a first gear and a second gear that mesh with each other. The first gear is fixedly sleeved on the input shaft, and the second gear is fixedly sleeved on the intermediate shaft.

[0009] A planetary gear set and a clutch assembly, wherein the planetary gear set includes a sun gear, planet gears, a planet carrier, and a ring gear, and the sun gear is fixedly sleeved on the intermediate shaft; the clutch assembly includes a first clutch and a second clutch, wherein the first clutch is used to engage or disengage the ring gear from the gearbox housing, and the second clutch is used to engage or disengage the sun gear from the planet carrier.

[0010] The second reduction gear set includes a meshing third gear and a fourth gear, wherein the third gear is connected to the planet carrier;

[0011] The fourth gear is fixedly sleeved on the output shaft.

[0012] As a preferred technical solution for the transmission powertrain, the input shaft, the intermediate shaft, and the output shaft are arranged in parallel.

[0013] As a preferred technical solution for the transmission powertrain, the first reduction gear set, the planetary gear set, and the second reduction gear set are distributed axially at intervals along the intermediate shaft, and the planetary gear set is located between the first reduction gear set and the second reduction gear set.

[0014] As a preferred technical solution for the transmission powertrain, both the first gear and the second gear are helical gears.

[0015] As a preferred technical solution for the transmission powertrain, both the third gear and the fourth gear are helical gears.

[0016] As a preferred technical solution for the powertrain of the transmission, the sun gear, the planet gears, and the ring gear are all spur gears.

[0017] As a preferred technical solution for the transmission powertrain, it also includes a disengagement mechanism, which is used to engage or disengage the output shaft from the front axle.

[0018] As a preferred technical solution for the transmission powertrain, the disengagement mechanism includes a fifth gear, a sixth gear, and a sliding sleeve. The fifth gear is disposed on the output shaft, the sixth gear is disposed on the front axle, and the sliding sleeve is used to engage or disengage the fifth gear and the sixth gear.

[0019] Construction machinery, including the gearbox powertrain as described in any of the above options.

[0020] As a preferred technical solution for construction machinery, the construction machinery is a loader.

[0021] The beneficial effects of this utility model are:

[0022] The transmission powertrain provided by this utility model combines a gear set, a planetary gear set, and a clutch, and achieves gear shifting by controlling the clutch. It has a simple structure and is easy to operate; at the same time, it can meet the needs of low-speed high torque and high-speed low torque. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the transmission powertrain provided in this embodiment of the utility model.

[0024] In the picture:

[0025] 10. Motor; 20. Input shaft; 31. First gear; 32. Second gear; 40. Intermediate shaft; 51. Sun gear; 52. Planet gears; 53. Planet carrier; 54. Ring gear; 61. First clutch; 62. Second clutch; 71. Third gear; 72. Fourth gear; 80. Output shaft; 91. Fifth gear; 92. Sixth gear; 93. Sliding sleeve; 100. Front axle. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] like Figure 1As shown, this utility model provides a gearbox powertrain, including a motor 10, an input shaft 20, a first reduction gear set, a planetary gear set, a clutch, a second reduction gear set, and an output shaft 80. The motor 10 has a motor shaft, and the input shaft 20 is connected to the motor shaft. The first reduction gear set includes a meshing first gear 31 and a second gear 32. The first gear 31 is fixedly sleeved on the input shaft 20, and the second gear 32 is fixedly sleeved on the intermediate shaft 40. The planetary gear set includes a sun gear 51, planet gears 52, a planet carrier 53, and a ring gear 54. The sun gear 51 is fixedly sleeved on the intermediate shaft 40. The clutch assembly includes a first clutch 61 and a second clutch 62. The first clutch 61 is used to engage or disengage the ring gear 54 from the gearbox housing, and the second clutch 62 is used to engage or disengage the sun gear 51 and the planet carrier 53. The second reduction gear set includes a meshing third gear 71 and a fourth gear 72. The third gear 71 is connected to the planet carrier 53, and the fourth gear 72 is fixedly sleeved on the output shaft 80.

[0031] When the first clutch 61 engages the gear ring 54 with the gearbox housing, the gearbox powertrain switches to first gear. The motor 10, acting as the power source, drives the first gear 31. The first gear 31, through the second gear 32, drives the intermediate shaft 40. The intermediate shaft 40 transmits power to the sun gear 51. The planetary carrier 53 outputs power to the third gear 71. The third gear 71, through the fourth gear 72, drives the output shaft 80, thus outputting power via the output shaft 80. In first gear, the motor 10's speed is reduced through three stages: the first gear 31, the second gear 32, the planetary carrier, the third gear 71, and the fourth gear 72, before being transmitted to the output shaft 80, resulting in higher torque and lower speed.

[0032] With the first clutch 61 engaging the gear ring 54 with the gearbox housing, the second clutch 62 engages the sun gear 51 with the planetary carrier 53, shifting the gearbox powertrain to second gear. The motor 10, acting as the power source, drives the first gear 31. The first gear 31, through the second gear 32, drives the intermediate shaft 40, which transmits power to the sun gear 51. The planetary gear set, as a whole, outputs power to the third gear 71. The third gear 71, through the fourth gear 72, drives the output shaft 80, thus outputting power via the output shaft 80. In second gear, the planetary gear set outputs power as a whole with a speed ratio of 1. Therefore, the actual speed of the motor 10 is transmitted to the output shaft 80 after two stages of reduction: through the first gear 31 and the second gear 32, and then through the third gear 71 and the fourth gear 72, achieving a higher speed and lower torque.

[0033] The transmission powertrain provided by this utility model combines a gear set, a planetary gear set, and a clutch. Gear shifting is achieved by controlling the clutch. It has a simple structure and is easy to operate. At the same time, it can meet the needs of low-speed high torque and high-speed low torque.

[0034] In this embodiment, the input shaft 20, intermediate shaft 40, and output shaft 80 are arranged in parallel, further simplifying the overall structure. The first reduction gear set, planetary gear set, and second reduction gear set are distributed at intervals along the axial direction of the intermediate shaft 40, with the planetary gear set located between the first and second reduction gear sets. This arrangement makes the structural distribution more rational.

[0035] In this embodiment, both the first gear 31 and the second gear 32 are helical gears. The third gear 71 and the fourth gear 72 are also helical gears. Helical gear meshing offers advantages such as compact structure, smooth transmission, and low noise. In other embodiments, the first gear 31 and the second gear 32 can also be spur gears, and the third gear 71 and the fourth gear 72 can also be spur gears. In this embodiment, the sun gear 51, the planet gears 52, and the ring gear 54 are all spur gears.

[0036] The transmission powertrain provided by this utility model also includes a disengagement mechanism, which is used to engage or disengage the output shaft 80 from the front axle 100, thereby enabling the construction machinery to switch between two-wheel drive and four-wheel drive modes. When the disengagement mechanism disengages the output shaft 80 from the front axle 100, the output shaft 80 only outputs power to the rear axle, and the construction machinery is in two-wheel drive mode. When the disengagement mechanism engages the output shaft 80 with the front axle 100, the output shaft 80 outputs power to both the front axle 100 and the rear axle, and the construction machinery is in four-wheel drive mode.

[0037] When the construction machinery is traveling on good roads or under light load, it can switch to two-wheel drive to reduce unnecessary power loss and tire wear. When the construction machinery is operating on complex roads or under heavy load, it can switch to four-wheel drive to obtain greater traction and better passability. In certain special circumstances, such as when the front axle 100 fails or is overloaded, the disengagement mechanism can separate the front axle 100 from the transmission powertrain, preventing the fault from escalating and protecting the transmission powertrain from damage. At the same time, it allows the construction machinery to continue driving on the rear axle, improving the reliability and emergency response capabilities of the construction machinery.

[0038] In this embodiment, the disengagement mechanism includes a fifth gear 91, a sixth gear 92, and a sliding sleeve 93. The fifth gear 91 is disposed on the output shaft 80, and the sixth gear 92 is disposed on the front axle 100. The sliding sleeve 93 is used to engage or disengage the fifth gear 91 and the sixth gear 92. When the sliding sleeve 93 slides to the position of the sixth gear 92, the fifth gear 91 and the sixth gear 92 are disengaged, that is, the output shaft 80 is disconnected from the front axle 100; when the sliding sleeve 93 slides to the position of the fifth gear 91, the fifth gear 91 and the sixth gear 92 are engaged, that is, the output shaft 80 is engaged with the front axle 100.

[0039] This utility model also provides an engineering machine, including a front axle 100, a rear axle, and the aforementioned gearbox powertrain. One end of the output shaft 80 of the gearbox powertrain is connected to the rear axle, and the other end is connected to the front axle 100 via a disengagement mechanism. By adopting the aforementioned gearbox powertrain, the structure can be simplified, and the requirements of low-speed high torque and high-speed low energy consumption can be met.

[0040] In this embodiment, the construction machinery is a loader. In other embodiments, the construction machinery may also be a dump truck, etc.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transmission powertrain, characterized in that, include: Motor (10); The input shaft (20) is connected to the motor shaft of the motor (10); The first reduction gear set includes a first gear (31) and a second gear (32) that mesh with each other. The first gear (31) is fixedly sleeved on the input shaft (20), and the second gear (32) is fixedly sleeved on the intermediate shaft (40). The planetary gear set and clutch assembly include a sun gear (51), planet gears (52), a planet carrier (53), and a ring gear (54), wherein the sun gear (51) is fixedly mounted on the intermediate shaft (40); the clutch assembly includes a first clutch (61) and a second clutch (62), wherein the first clutch (61) is used to engage or disengage the ring gear (54) from the gearbox housing, and the second clutch (62) is used to engage or disengage the sun gear (51) from the planet carrier (53); The second reduction gear set includes a meshing third gear (71) and a fourth gear (72), wherein the third gear (71) is connected to the planet carrier (53); The fourth gear (72) is fixedly sleeved on the output shaft (80).

2. The gearbox powertrain according to claim 1, characterized in that, The input shaft (20), the intermediate shaft (40), and the output shaft (80) are arranged in parallel.

3. The gearbox powertrain according to claim 1, characterized in that, The first reduction gear set, the planetary gear set, and the second reduction gear set are distributed axially at intervals along the intermediate shaft (40), and the planetary gear set is located between the first reduction gear set and the second reduction gear set.

4. The gearbox powertrain according to claim 1, characterized in that, Both the first gear (31) and the second gear (32) are helical gears.

5. The gearbox powertrain according to claim 1, characterized in that, Both the third gear (71) and the fourth gear (72) are helical gears.

6. The gearbox powertrain according to claim 1, characterized in that, The sun gear (51), the planet gear (52) and the gear ring (54) are all spur gears.

7. The transmission powertrain according to any one of claims 1-6, characterized in that, It also includes a disconnection mechanism for engaging or disengaging the output shaft (80) from the front axle (100).

8. The gearbox powertrain according to claim 7, characterized in that, The bridge disengagement mechanism includes a fifth gear (91), a sixth gear (92), and a sliding sleeve (93). The fifth gear (91) is disposed on the output shaft (80), the sixth gear (92) is disposed on the front axle (100), and the sliding sleeve (93) is used to engage or disengage the fifth gear (91) and the sixth gear (92).

9. Construction machinery, characterized in that, Includes the gearbox powertrain as described in any one of claims 1-8.

10. The engineering machinery according to claim 9, characterized in that, The construction machinery mentioned is a loader.

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