Four parallel shaft engineering machinery power system and vehicle

Abstract

The utility model belongs to power system technical field discloses a four parallel shaft engineering machinery power system and vehicle, four parallel shaft engineering machinery power system includes gearbox, sliding sleeve shift execution mechanism C1 and motor, the gearbox includes parallelly arranged input shaft assembly, intermediate axle assembly, axle assembly and output shaft assembly, sliding sleeve shift execution mechanism C1 is arranged on input shaft assembly, the motor is connected with input shaft assembly coaxially, the utility model can satisfy the demand that big tonnage loader is to one gear and two gear speed ratio difference is bigger, can also satisfy the demand that big height difference between input shaft and output shaft.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, specifically to a four-parallel-axis engineering machinery power system and vehicle. Background Technology

[0002] In the construction machinery sector, the penetration rate of pure electric construction machinery is increasing rapidly. In some large-scale construction units such as mines and coal plants, regional policies encourage the electrification of construction vehicles, with loaders showing the fastest pace of electrification.

[0003] Currently, the transmission systems of pure electric construction machinery mainly consist of traditional fixed-axis gearboxes and two-speed gearboxes. Traditional fixed-axis gearboxes are simple in structure and technologically mature, widely used in stable engineering scenarios, and can reliably transmit power. Two-speed gearboxes, with their flexible shifting characteristics, can adapt to different work intensity requirements, offering significant advantages in construction machinery that requires frequent changes in working conditions. Construction machinery exhibits the characteristics of low-speed, high-torque operation and high-speed transfer. These two transmission systems, to a certain extent, meet the basic power transmission needs of construction machinery, providing fundamental power conversion support for the operation of pure electric construction machinery in different work scenarios.

[0004] In the construction machinery field, large-tonnage loaders have stringent requirements for efficient operation. However, current technology faces a key bottleneck—it cannot meet the demand for a large speed ratio difference between first and second gear in large-tonnage loaders. Existing transmission technology is limited by factors such as design concepts, material properties, and manufacturing processes, resulting in significant deficiencies in the speed ratio adjustment range and precision. The difficulty in achieving an ideal speed ratio difference between first and second gear makes the power matching of the loader insufficiently precise under different working conditions. Utility Model Content

[0005] The purpose of this utility model is to provide a four-parallel-axis engineering machinery power system and vehicle to overcome the problems existing in the prior art. This utility model can meet the requirements of large-tonnage loaders for a large difference in the first and second gear speed ratios, and can also meet the requirements for a large height difference between the input shaft and the output shaft.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, this utility model provides a four-parallel-axis engineering machinery power system, comprising: The gearbox includes an input shaft assembly, an intermediate shaft assembly, an intermediate shaft assembly, and an output shaft assembly arranged in parallel. The sliding sleeve shifting actuator C1 is slidably mounted on the input shaft assembly; The motor is coaxially connected to the input shaft assembly; In some embodiments, the input shaft assembly includes an input shaft coaxially connected to the motor, and a high-gear gear and a low-gear gear are provided on the input shaft, with the sliding sleeve shifting actuator C1 located between the high-gear gear and the low-gear gear; In some embodiments, the sliding sleeve shifting actuator C1 has three working positions: In neutral position, the sliding sleeve shifting actuator C1 is located between the high gear and the low gear, and power is interrupted; In first gear, the sliding sleeve shifting actuator C1 is located on the side close to the low gear, so that the low gear engages with the input shaft; In the second gear position, the sliding sleeve shifting actuator C1 is located on the side close to the high gear, so that the high gear engages with the input shaft; In some embodiments, the output shaft of the motor is coaxially connected to the input shaft; In some embodiments, the intermediate shaft assembly includes an intermediate shaft arranged parallel to the input shaft, and an intermediate shaft high-gear meshing gear, an intermediate shaft output gear, and an intermediate shaft low-gear meshing gear are provided on the intermediate shaft. The intermediate shaft high-gear meshing gear meshes with a high-gear gear, the intermediate shaft output gear meshes with an intermediate shaft assembly, and the intermediate shaft low-gear meshing gear meshes with a low-gear gear. In some embodiments, the impeller shaft assembly includes an impeller shaft arranged parallel to the input shaft and the intermediate shaft, an impeller shaft gear is provided on the impeller shaft, one end of the impeller shaft gear meshes with the intermediate shaft output gear, and the other end of the impeller shaft gear meshes with the output shaft assembly; In some embodiments, the output shaft assembly includes an output shaft arranged parallel to the input shaft, intermediate shaft, and intermediate wheel shaft, and an output shaft gear is provided on the output shaft, the output shaft gear meshing with the other end of the intermediate wheel shaft gear. In some embodiments, an output flange is provided at one end of the output shaft for outputting power; In some embodiments, a brake is provided at the other end of the output shaft.

[0007] Secondly, this utility model provides a vehicle, including a vehicle body, on which the above-mentioned four-parallel-axis engineering machinery power system is installed.

[0008] The above technical solution has the following advantages or beneficial effects: Firstly, this utility model provides a four-parallel-shaft power system for construction machinery, which can meet the needs of large-tonnage loaders for a large difference in the speed ratio between first and second gear, and also meet the need for a large height difference between the input and output shafts. This utility model is mainly aimed at large-tonnage loading vehicles, integrating a motor with a four-parallel-shaft gearbox. Through the four-parallel-shaft structure, while satisfying power transmission, an additional intermediate shaft is added to increase the height difference between the input and output shafts based on the gearbox speed ratio, meeting the needs of high-tonnage loaders. When loaders are working and loading, the impact is large, and the torque output requirements of the power system are high. By using two different gears in the gearbox to reduce speed and increase torque, the output torque of the power system can meet the special working environment of loaders and other construction machinery. The motor directly inputs power into the gearbox, which is a two-speed gearbox. The gear shifting is performed through a sliding sleeve shifting actuator, which can switch between two working modes. By controlling the motor speed, the loader can achieve dynamic automatic gear shifting. During loading, high torque output is achieved in first gear, and the second gear is automatically switched during long-distance travel such as loading or relocation, demonstrating its high-speed performance.

[0009] Secondly, this utility model provides a vehicle that, through a four-parallel-axis engineering machinery power system, can meet the demand of large-tonnage loaders for a large difference in the first and second gear speed ratios, and can also meet the demand for a large height difference between the input and output shafts. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of a four-parallel-axis engineering machinery power system according to some embodiments of this specification; Figure 2 This is a schematic diagram of the working mode in neutral position according to some embodiments of this specification; Figure 3 This is a schematic diagram of the first gear position working mode according to some embodiments of this specification; Figure 4 This is a schematic diagram of the two-position working mode according to some embodiments of this specification. Detailed Implementation

[0011] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0012] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0013] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0014] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 communication 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 according to the specific circumstances.

[0015] 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 above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1 This is a structural schematic diagram of a four-parallel-axis engineering machinery power system according to some embodiments of this specification. The four-parallel-axis engineering machinery power system includes: a gearbox, a sliding sleeve shifting actuator C130, and a motor 1. The gearbox includes an input shaft assembly, an intermediate shaft assembly, an intermediate wheel shaft assembly, and an output shaft assembly arranged in parallel. The sliding sleeve shifting actuator C130 is slidably disposed on the input shaft assembly. The motor 1 is coaxially connected to the input shaft assembly.

[0018] In some embodiments, the input shaft assembly includes an input shaft 20 coaxially connected to the motor 1, and a high gear 10 and a low gear 11 are provided on the input shaft 20. The sliding sleeve shifting actuator C130 is located between the high gear 10 and the low gear 11. The sliding sleeve shifting actuator C130 is used to selectively engage with the input shaft 20 to achieve gear shifting.

[0019] In some embodiments, the sliding sleeve shifting actuator C130 has three operating positions: In neutral, the sliding sleeve shifting actuator C130 is located between the high gear 10 and the low gear 11, and power is interrupted; in first gear, the sliding sleeve shifting actuator C130 is located closer to the low gear 11, so that the low gear 11 engages with the input shaft 20; in second gear, the sliding sleeve shifting actuator C130 is located closer to the high gear 10, so that the high gear 10 engages with the input shaft 20. In some embodiments, the output shaft of motor 1 is coaxially connected with the input shaft 20; In some embodiments, the motor is a permanent magnet synchronous motor 1 with a rated speed of 4000 rpm, and the gearbox achieves dynamic automatic gear shifting by controlling the speed of the motor 1; by using the 4000 rpm motor 1 as the power source, and by reducing speed and increasing torque through two different gears of the gearbox, the output torque of the power system can meet the special working environment of engineering machinery such as loaders.

[0020] In some embodiments, the gearbox further includes a housing, wherein the parallel-arranged input shaft assembly, intermediate shaft assembly, intermediate wheel shaft assembly and output shaft assembly are all located inside the housing; In some embodiments, the intermediate shaft assembly includes an intermediate shaft 21 arranged parallel to the input shaft 20. The intermediate shaft 21 is provided with an intermediate shaft high gear engagement gear 15, an intermediate shaft output gear 16, and an intermediate shaft low gear engagement gear 12. The intermediate shaft high gear engagement gear 15 meshes with a high gear 10, the intermediate shaft output gear 16 meshes with an intermediate shaft assembly, and the intermediate shaft low gear engagement gear 12 meshes with a low gear 11. In some embodiments, the intermediate shaft assembly includes an intermediate shaft 22 arranged parallel to the input shaft 20 and the intermediate shaft 21. An intermediate shaft gear 14 is provided on the intermediate shaft 22. One end of the intermediate shaft gear 14 meshes with the intermediate shaft output gear 16, and the other end of the intermediate shaft gear 14 meshes with the output shaft assembly. In some embodiments, the gear parameters of the interlocking shaft 22 are adjustable to adjust the height difference between the input shaft 20 and the output shaft 23 and the gearbox speed ratio. The function of the interlocking shaft assembly is to adjust the high speed difference between the gearbox input shaft 20 and the output shaft 23 by adjusting the gear parameters, and to change the height of the interlocking shaft 22 when adjusting the speed ratio to avoid changes in the gearbox housing. In some embodiments, the output shaft assembly includes an output shaft 23 arranged parallel to the input shaft 20, intermediate shaft 21, and intermediate wheel shaft 22. An output shaft gear 13 is provided on the output shaft 23, and the output shaft gear 13 meshes with the other end of the intermediate wheel shaft gear 14. In some embodiments, one end of the output shaft 23 is provided with an output flange 40 for outputting power; In some embodiments, a brake 50 is provided at the other end of the output shaft 23 for parking or braking functions.

[0021] In one embodiment of this utility model, a vehicle is also provided, including a vehicle body, on which a four-parallel-axis engineering machinery power system is installed; In some embodiments, a four-parallel-axis engineering machinery power system is suitable for loaders, wherein the first gear is used for high torque output conditions and the second gear is used for high-speed transfer conditions.

[0022] The structure and working principle of this utility model will be further explained below: The purpose of this utility model is to provide a four-parallel-axis engineering machinery power system. When using this device, the sliding sleeve shifting actuator C130 mainly controls three working modes, namely neutral, first gear and second gear. The first gear is mainly used for the large impact conditions when the loader is working, and the second gear is mainly used for the high speed requirements when moving to another location.

[0023] Figure 2This is a schematic diagram of the working mode in neutral position according to some embodiments of this specification. At this time, the sliding sleeve shifting actuator C130 of the four parallel shaft engineering machinery power system is in the middle position between the high gear 10 and the low gear 11, which is the neutral state and there is no power output.

[0024] Figure 3 The diagram below illustrates the first-gear working mode according to some embodiments of this specification. The sliding sleeve shifting actuator C130 of the four-parallel-axis engineering machinery power system is located near the low-gear 11, engaging the low-gear 11 with the input shaft 20. At this point, the power system's speed ratio is at its maximum. Speed ​​reduction and torque increase are achieved through two-stage reduction. The torque is transmitted to the intermediate shaft 21 via the input shaft 20, specifically through the engagement of the low-gear 11 with the low-gear meshing gear 12 on the intermediate shaft. The intermediate shaft 21 then engages with the intermediate shaft output gear 16 and the intermediate wheel shaft gear 14. The intermediate wheel shaft gear 14 then engages with the output shaft gear 13, transmitting power to the input shaft 23. The input shaft 23 outputs power through the output flange 40. The first-gear working mode is primarily used in the loader's operation, such as shoveling, climbing, and other high-torque-demand conditions.

[0025] Figure 4 The schematic diagram of the two-gear working mode shown in some embodiments of this specification is as follows: the sliding sleeve shifting actuator C130 of the four parallel shaft engineering machinery power system is located near the high gear 10, so that the high gear 10 is engaged with the input shaft 20. At this time, the speed ratio of the power system is relatively small. The torque and speed of the motor 1 are transmitted to the intermediate shaft 21 through the input shaft 20. That is, the high gear 10 is engaged with the high gear meshing gear 15 of the intermediate shaft, and the power is transmitted to the intermediate shaft 21. The intermediate shaft 21 is engaged with the intermediate shaft output gear 16 and the intermediate wheel shaft gear 14. The intermediate wheel shaft gear 14 is engaged with the output shaft gear 13, and the power is transmitted to the input shaft 23. The input shaft 23 outputs power through the output flange 40. The two-gear working mode is mainly used for conditions that require high-speed performance, such as the loader's travel and relocation.

[0026] The three working modes of this utility model are shown in the table below: Table 1 Power System Operating Modes

[0027] This utility model provides a four-parallel-shaft engineering machinery power system and vehicle, which can meet the needs of large-tonnage loaders for a large difference in the speed ratio between first and second gear, and can also adapt to the large height difference arrangement requirements between the input shaft 20 and the output shaft 23. The four-parallel-shaft engineering machinery power system is mainly designed for large-tonnage loading vehicles. It integrates the motor 1 and the four-parallel-shaft gearbox into one unit. Based on the power transmission through the four-parallel-shaft structure, the gearbox gear ratio is adjusted by the intermediate shaft 22, and the height difference between the input and output shafts 23 is increased, thereby meeting the overall layout requirements of high-end loaders. Loaders have large impact and high torque requirements when working and loading. This power system uses the speed reduction and torque increase effect of the two-speed gearbox to make its output torque adaptable to the special working conditions of engineering machinery. The motor power is directly input to the gearbox, which adopts a two-speed design. The gearbox achieves gear switching through the sliding sleeve shifting actuator C130 arranged on the input shaft assembly. It has two working modes: the first gear is mainly used for high torque output under loading conditions, and the second gear is suitable for high speed requirements when moving between sites or traveling long distances. The system can also achieve dynamic automatic gear shifting through motor speed control, automatically switching gears according to working conditions during operation, combining high torque and high speed performance.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A four-parallel-axis engineering machinery power system, characterized in that, include: The gearbox includes an input shaft assembly, an intermediate shaft assembly, an intermediate shaft assembly, and an output shaft assembly arranged in parallel. The sliding sleeve shifting actuator C1 (30) is slidably mounted on the input shaft assembly; The motor (1) is coaxially connected to the input shaft assembly.

2. The four-parallel-axis engineering machinery power system according to claim 1, characterized in that, The input shaft assembly includes an input shaft (20) coaxially connected to the motor (1). A high gear (10) and a low gear (11) are provided on the input shaft (20). The sliding sleeve shifting actuator C1 (30) is located between the high gear (10) and the low gear (11).

3. The four-parallel-axis engineering machinery power system according to claim 2, characterized in that, The sliding sleeve shifting actuator C1 (30) has three working positions: In neutral position, the sliding sleeve shifting actuator C1 (30) is located between the high gear (10) and the low gear (11), and power is interrupted; In the first gear position, the sliding sleeve shifting actuator C1 (30) is located on the side close to the low gear (11), so that the low gear (11) engages with the input shaft (20); In the second gear position, the sliding sleeve shifting actuator C1 (30) is located on the side close to the high gear (10), so that the high gear (10) engages with the input shaft (20).

4. The four-parallel-axis engineering machinery power system according to claim 2, characterized in that, The output shaft of the motor (1) is coaxially connected to the input shaft (20).

5. A four-parallel-axis engineering machinery power system according to claim 2, characterized in that, The intermediate shaft assembly includes an intermediate shaft (21) arranged parallel to the input shaft (20). The intermediate shaft (21) is provided with an intermediate shaft high gear meshing gear (15), an intermediate shaft output gear (16) and an intermediate shaft low gear meshing gear (12). The intermediate shaft high gear meshing gear (15) meshes with the high gear gear (10), the intermediate shaft output gear (16) meshes with the intermediate shaft assembly, and the intermediate shaft low gear meshing gear (12) meshes with the low gear gear (11).

6. A four-parallel-axis engineering machinery power system according to claim 5, characterized in that, The intermediate shaft assembly includes an intermediate shaft (22) arranged parallel to the input shaft (20) and the intermediate shaft (21). An intermediate shaft gear (14) is provided on the intermediate shaft (22). One end of the intermediate shaft gear (14) meshes with the intermediate shaft output gear (16), and the other end of the intermediate shaft gear (14) meshes with the output shaft assembly.

7. A four-parallel-axis engineering machinery power system according to claim 6, characterized in that, The output shaft assembly includes an output shaft (23) arranged parallel to the input shaft (20), intermediate shaft (21), and intermediate wheel shaft (22). An output shaft gear (13) is provided on the output shaft (23), and the other end of the output shaft gear (13) meshes with the other end of the intermediate wheel shaft gear (14).

8. A four-parallel-axis engineering machinery power system according to claim 7, characterized in that, One end of the output shaft (23) is provided with an output flange (40) for outputting power.

9. A four-parallel-axis engineering machinery power system according to claim 8, characterized in that, A brake (50) is provided at the other end of the output shaft (23).

10. A vehicle, characterized in that, The system includes a vehicle body on which a four-parallel-axis engineering machinery power system according to any one of claims 1-9 is installed.

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