Shunting speed reducer for high-power hybrid electric power system

Abstract

The invention relates to the technical field of hybrid electric power systems, in particular to a shunting speed reducer for a high-power hybrid electric power system. Comprising a casing including a main casing and an output casing, the main casing and the output casing are fixedly connected, and a casing cavity is formed between the main casing and the output casing; the input gear penetrates through the casing and is rotationally connected with the casing; and the idle gear is rotatably arranged in the cavity of the casing, and the input gear is meshed with the idle gear. The engine drives the input gear to rotate, the generator can be directly connected to the input gear so that the generator can generate electricity, the input gear can be meshed with the idle gear, the idle gear is then meshed with the output gears, and the input gear can drive the output gears to rotate through the idle gear at the same time. Power can be provided for the multiple generators at the same time, so that the total power generation power is improved, and the requirements of customers for the power generation capacity are met.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid power systems, and particularly to a shunt speed reducer for a high-power hybrid power system. Background Art

[0002] The hybrid power system is the future development direction of aeroengines, and can drive a generator connected thereto to generate electricity through the engine. The commonly used method is to use a single engine to drive a single generator. However, the power of the existing finished generators on the market is relatively small at present. Using this method, the power generation power of the generator cannot meet the requirements of high-power power generation capabilities. Summary of the Invention

[0003] In view of this, the present invention provides a shunt speed reducer for a high-power hybrid power system to solve the problem that the power generation power of a single engine driving a single generator cannot meet the power generation requirements.

[0004] The present invention provides a shunt speed reducer for a high-power hybrid power system for an engine to drive a plurality of generators, including:

[0005] A casing, including a main casing and an output casing, the main casing and the output casing are fixedly connected and a casing cavity is formed between the main casing and the output casing;

[0006] An input gear, passing through the casing and rotatably connected to the casing;

[0007] An idle gear, rotatably arranged in the casing cavity, the input gear meshes with the idle gear; an output gear, rotatably arranged on the casing, and the output gear meshes with the idle gear;

[0008] One end of the input gear is connected to an engine, and the other end is connected to a generator. There is at least one output gear, and the end of the output gear away from the engine passes through the casing and is connected to a generator. The engine is located on one side close to the main casing, and the generators are located on one side close to the output casing and are evenly distributed.

[0009] In this application, the engine drives the input gear to rotate, and the generator can be directly connected to the input gear, so that the generator generates electricity. The input gear can mesh with the idle gear, and the idle gear then meshes with a plurality of output gears. The input gear can drive a plurality of output gears to rotate simultaneously through the idle gear, so as to enable a plurality of generators to generate electricity, and can provide power to a plurality of generators simultaneously to increase the total power generation power and meet the customer's requirements for power generation capabilities.

[0010] In the present application, lubricating oil or heat dissipating oil can be provided in the casing cavity to dissipate heat and lubricate the input gear, idler gear and output gear to ensure operation within a safe temperature range. The casing cavity formed between the main casing and the output casing can effectively utilize the space, accommodate the idler gear and other components, reduce the volume of the overall system, and improve the compactness of the design. The close layout of the engine and the input gear ensures the direct transmission of power, reduces energy loss, and improves overall efficiency. The fixed connection between the main casing and the output casing enhances the structural stability of the entire system, can withstand greater power and load, and reduces vibration and wear. The design of the casing cavity makes internal components (such as idler gears) easier to access and maintain, facilitates inspection and maintenance, and reduces maintenance costs. By rationally arranging the engine, input gear and generator, multiple generators can be driven at the same time to meet the needs of high-power power generation and solve the problem of insufficient power generation capacity of a single generator.

[0011] In an optional embodiment, the main casing has a main casing mounting edge, and the main casing mounting edge is fixedly connected to the engine;

[0012] The output casing is provided with an output casing mounting edge, and the output casing mounting edge is fixedly connected to the generator.

[0013] The design of the main casing mounting edge and the output casing mounting edge can effectively absorb and reduce the vibration and impact generated by the engine and generator during operation, protect the internal components, and extend the service life of the equipment. The main casing and the engine intake casing, the main casing and the output casing, and the output casing and the generator are all fixedly connected by screws or bolts and cannot be moved automatically.

[0014] The mounting edge design makes it easier to install and remove the engine and generator, simplifying the maintenance and overhaul process and improving work efficiency. The mounting edge can distribute the load more evenly, reduce local stress, reduce the risk of structural damage, and ensure the stability and safety of the system. During operation, the engine and generator will undergo dimensional changes due to thermal expansion. The mounting edge design can adapt to these changes and avoid structural damage caused by thermal expansion. The mounting edge design of the main and output casings enhances the integration of the entire power system, making the connection between the various components tighter and improving the overall performance of the system.

[0015] In an optional embodiment, the generator and the input gear as well as the generator and the output gear are connected via splines, and the input gear is connected to the engine power output shaft via splines.

[0016] The spline connection can provide a larger contact area, ensuring efficient power transmission between the generator and the input and output gears, reducing energy loss, and improving the overall efficiency of the system. The spline connection has good anti-torsion performance and can withstand large torques, ensuring the stable operation of the generator under high load conditions and avoiding connection failure caused by excessive torque.

[0017] In an alternative embodiment, a first through hole is provided on the casing, the first through hole penetrates through the side walls of the main casing and the output casing respectively, and the input gear is arranged in the first through hole;

[0018] Two first support bearings are sleeved on the input gear and are respectively located inside the side walls of the main casing and the output casing. The inner rings of the two first support bearings are in interference fit with the input gear, and the outer rings of the two first support bearings are in transitional fit with the first through hole;

[0019] Two first locking nuts are screwed on the input gear and are adapted to lock the two first support bearings on the input gear;

[0020] One end of the first through hole located on the main casing communicates with the intake casing of the engine.

[0021] In this application, by providing two first support bearings on the input gear, the load of the input gear can be effectively dispersed, its stability can be enhanced, and wear and faults caused by uneven load can be reduced. The interference fit design of the first support bearings can ensure the precise positioning of the input gear during operation, reduce axial and radial clearances, thereby improving the transmission accuracy and ensuring the efficient operation of the system. It can effectively reduce the vibration and noise of the input gear during operation, improve the smoothness and comfort of the system, and reduce the impact on the surrounding environment. By providing the first through hole, it is convenient to inspect and replace the input gear and its support bearings, simplifies the maintenance process, and reduces the maintenance cost. The first through hole helps the flow of lubricating oil or cooling oil, ensures good lubrication of the input gear and the support bearings, reduces friction and wear, and extends the service life of the components. By making the outer side of the first support bearing in interference fit with the first through hole, the strength of the whole structure can be enhanced, the load-bearing capacity of the system can be improved, and safe operation under high load conditions can be ensured. The first through hole helps to dissipate heat, prevent component damage caused by overheating, and ensure the reliability of the system during long-term operation. The first locking nut can ensure the fixed position of the first support bearing, further improve the assembly accuracy, and avoid faults caused by loosening.

[0022] In an alternative embodiment, a first sealing device and a first positioning sleeve are sleeved on the input gear. The first positioning sleeve is located between the first sealing device and the input gear, and the first locking nut is adapted to abut the first positioning sleeve against the first support bearing.

[0023] Both the first positioning sleeve and the first sealing device are located on the output casing side.

[0024] The first locking nut can fix the first support bearing on the output casing side through the first positioning sleeve. The first sealing device can effectively prevent lubricating oil leakage and external contaminants from entering the casing cavity, protect the internal components of the casing cavity, extend their service life, and ensure the normal operation of the system. The cooperation among the first positioning sleeve, the first support bearing, and the first locking nut enhances the strength of the entire structure, improves the load-bearing capacity of the system under high-load conditions, and ensures safe operation. By connecting the first through-hole to the intake casing of the engine, the heat in the casing cavity can be effectively managed, the heat dissipation in the casing cavity can be promoted, component damage caused by overheating can be prevented, the reliability of the system can be ensured, and the oil circuit in the casing cavity can be connected to the oil circuit of the engine, so as to share a set of lubrication systems. The first sealing device and the first positioning sleeve can make maintenance and replacement more convenient, reduce the complexity of disassembly and assembly, and lower the maintenance cost. By abutting the first sealing device and the support bearing against both sides of the first protrusion, the vibration and noise of the input gear during operation can be effectively reduced, the smoothness and comfort of the system can be improved, and at the same time, the input gear can be prevented from moving axially.

[0025] In an alternative embodiment, an oil inlet and an oil return port are provided on the main casing. One end of the oil inlet and one end of the oil return port are both communicated with the casing cavity. The other end of the oil inlet is communicated with the inner oil circuit of the engine, and the other end of the oil return port is communicated with the oil return system of the engine.

[0026] The oil inlet is connected to the inner oil circuit of the engine to ensure that the lubricating oil can be delivered to the components that need lubrication in a timely and effective manner, reducing friction and wear and extending the service life of the equipment. The oil return port enables the lubricating oil to form a good circulation within the system, avoiding oil retention, ensuring that the temperature and performance of the lubricating oil are maintained in the best state, and improving the lubrication effect. By connecting the oil return port to the air intake casing of the engine, the heat in the lubricating oil can be effectively removed, preventing the lubricating oil from overheating, maintaining its viscosity and lubrication performance, and ensuring the stable operation of the system. The oil inlet and the oil return port can effectively prevent external contaminants from entering the lubrication system, protect the internal components, ensure the cleanliness of the lubricating oil, and enhance the reliability of the system. By setting the oil inlet and the oil return port, maintenance personnel can more conveniently replace the lubricating oil and inspect the system, reducing maintenance costs and improving work efficiency. The oil inlet and the oil return port enable the lubrication system of the engine to be closely integrated with the casing cavity, sharing a set of lubrication systems to form an efficient overall structure, enhancing the reliability and stability of the system.

[0027] In an alternative embodiment, two second support bearings are sleeved on the output gear and are respectively located on the main casing side and the output casing side. The inner rings of the two second support bearings are in interference fit with the input gear, and the outer rings of the two second support bearings are in transitional fit with the main casing and the output casing respectively;

[0028] Two second locking nuts are screwed onto the output gear and are suitable for locking the two second support bearings on the output gear.

[0029] The two second support bearings are respectively located inside the side walls of the main casing and the output casing, which can effectively support the output gear, prevent it from undergoing axial and radial displacements during operation, and improve the stability and reliability of the system. Through the interference fit with the input gear, the second support bearings can effectively disperse the load, reduce the direct contact and friction between the gears, thereby reducing wear and extending the service life of the gears and bearings. It can reduce the deformation and vibration of the input gear, ensure the meshing accuracy of the input gear during operation, thereby improving the transmission efficiency and reducing energy loss. The two second locking nuts can make the installation and fixation of the support bearings more convenient. Maintenance personnel can more conveniently conduct inspections and replacements, reducing maintenance costs. Through the interference fit method, a tight connection is formed between the second support bearings and the main casing and the output casing respectively, enhancing the strength of the overall structure and enabling it to withstand a greater working load. The second support bearings can effectively absorb and mitigate the vibration generated during gear operation, reduce noise, and improve the running smoothness of the system. Setting the second support bearings inside the side walls of the main casing and the output casing helps to optimize the spatial layout, reduce the overall volume of the system, and improve the compactness of the design. The second locking nuts can effectively prevent the second support bearings from loosening or falling off, enhancing the overall reliability of the system and ensuring long-term stable operation.

[0030] In an alternative embodiment, a second sealing device and a second positioning sleeve are sleeved on the output gear. The second positioning sleeve is located between the second sealing device and the output gear, and the second locking nut is adapted to abut the second positioning sleeve against the second support bearing;

[0031] Both the second positioning sleeve and the second sealing device are located on the output casing side.

[0032] The second locking nut can fix the second support bearing on the output casing side through the second positioning sleeve. The design of the second sealing device can effectively prevent the leakage of lubricating oil or other liquids, while preventing external contaminants (such as dust, moisture, etc.) from entering the system, protecting the internal components, and extending the service life of the equipment. By providing good sealing and positioning, the friction and wear between the gear and other components can be reduced, and the maintenance frequency and cost can be lowered.

[0033] In an alternative embodiment, a plurality of vent holes are provided on the output casing. The vent holes are close to the mounting edge of the output casing, and a generator heat dissipation vent plug is provided at the opening of the vent holes.

[0034] The vent holes help to discharge the hot air flow generated during the operation of the generator, improve the working environment around the equipment, and enhance the comfort of the operator. The generator heat dissipation vent plug can prevent external dust and contaminants from entering the inside of the vent holes, protect the internal components, and reduce the maintenance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0037] Figure 2 It is a schematic diagram of the positions of the engine and the generator in an embodiment of the present invention.

[0038] Description of the reference numerals:

[0039] 1. Input gear; 2. Idler gear; 3. Output gear; 4. Main housing; 5. Output housing; 6. Housing cavity; 7. Main housing mounting edge; 8. Output housing mounting edge; 10. First support bearing; 11. First lock nut; 12. First positioning sleeve; 13. First sealing device; 14. Second support bearing; 15. Second lock nut; 16. Second positioning sleeve; 17. Second sealing device; 18. Vent hole. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The following combines Figures 1 to 2 , to describe the embodiments of the present invention.

[0042] According to an embodiment of the present invention, there is provided a shunt speed reducer for a high-power hybrid power system, which is used for an engine to drive a plurality of generators, and includes:

[0043] A housing, including a main housing 4 and an output housing 5, the main housing 4 and the output housing 5 are fixedly connected and a housing cavity 6 is formed between the main housing 4 and the output housing 5;

[0044] An input gear 1, passing through the housing and rotatably connected to the housing;

[0045] An idler gear 2, rotatably arranged in the housing cavity 6, the input gear 1 meshes with the idler gear 2;

[0046] An output gear 3, rotatably arranged on the housing, and the output gear 3 meshes with the idler gear 2;

[0047] One end of the input gear 1 is connected to an engine, and the other end is connected to a generator. The number of the output gears 3 is at least one. One end of the output gear 3 away from the engine passes through the housing and is connected to a generator. The engine is located on one side close to the main housing 4, and the generators are located on one side close to the output housing 5 and are evenly distributed.

[0048] This application aims to drive several generators through an engine to achieve efficient power output and energy utilization. The casing is the outer shell of the entire shunt reducer, providing necessary support and protection. It not only bears the internal components but also ensures the sealing and stability of the system, preventing external contaminants from entering the interior. The input gear 1 penetrates the casing and is rotatably connected to the casing, serving as a key component for power input. One end of it is connected to the engine, responsible for receiving the power output by the engine; the other end is connected to the generator, transmitting the power to the generator for power conversion. The input gear 1 ensures efficient power transmission and can withstand the high torque generated by the engine. The idler gear 2 is rotatably arranged on the casing and meshes with the input gear 1 and the output gear 3 respectively. The function of the idler gear 2 is to adjust the distribution and transmission of power through meshing with the input gear 1. It can effectively reduce the load on the input gear 1, improve the operating efficiency of the system, and provide additional power support when needed. The output gear 3 is also rotatably arranged on the casing and meshes with the idler gear 2. The number of output gears 3 is at least one, enabling it to receive power from the idler gear 2 and transmit it to the generator. One end of the output gear 3 away from the engine penetrates the casing and is connected to the generator, ensuring that the generator can stably receive power and generate electricity.

[0049] Currently, the power ratings of mature generators on the market are usually around 300 kW. There are no mature available products for generators with higher power, even above the megawatt level. The power generation capacity of small and medium-power generators cannot meet the user's needs. This application uses a high-power engine as the prime mover, enabling effective power shunting of the engine to drive multiple generators to work simultaneously. This design not only improves the power generation capacity and solves the problem of insufficient power generation capacity of a single generator. Specifically, two output gears 3 can be selected in this application, and three 300-kW mature generator products can be selected for the generators. The three generators are simultaneously driven to work by the shunt reducer, and the three generators generate electricity simultaneously to supply the energy storage system for users. It can also flexibly adjust the working state of the generators according to actual needs to meet the power demands of different users. In addition, the compact design and efficient transmission mechanism of the shunt reducer ensure the overall performance and reliability of the system, providing a solid foundation for the application of hybrid power systems.

[0050] The main casing 4 and the output casing 5 are tightly combined together by a fixed connection method to form an integral structure. Between the two, a casing cavity 6 is formed, which not only provides necessary space for internal components but also plays a role in heat dissipation and lubrication, ensuring that the system maintains a good working state during operation. The engine is arranged at one end of the input gear 1 close to the main casing 4 to ensure that the output shaft of the engine can be directly connected to the input gear 1, thereby achieving efficient power transmission. The generator located on the input gear 1 is arranged at one end close to the output casing 5, enabling the generator to effectively receive power from the input gear 1 and convert it into electrical energy. The idle gear 2 allows it to rotate freely inside the casing and meshes with the input gear 1. The presence of the idle gear 2 not only helps to regulate the power distribution but also plays a role in buffering and shock absorption during system operation, reducing mechanical wear and improving the overall efficiency and reliability of the system. Through this structural design, a tight and efficient power transmission system is formed among the casing, the input gear 1, the engine, and the generator, ensuring the stable operation of the hybrid power system and its high-power generation capacity.

[0051] In this application, lubricating oil or heat-dissipating oil can be arranged in the casing cavity 6 to dissipate heat and lubricate the input gear 1, the idle gear 2, and the output gear 3, ensuring operation within a safe temperature range. The casing cavity 6 formed between the main casing 4 and the output casing 5 can effectively utilize space, accommodate the idle gear 2 and other components, reduce the volume of the overall system, and improve the compactness of the design. The close layout of the engine and the input gear 1 ensures direct power transmission, reduces energy loss, and improves the overall efficiency. The fixed connection between the main casing 4 and the output casing 5 enhances the structural stability of the entire system, enabling it to withstand greater power and load, reducing vibration and wear. The design of the casing cavity 6 makes it easier to access and maintain internal components such as the idle gear 2, facilitating inspection and maintenance, and reducing maintenance costs. By reasonably arranging the engine, the input gear 1, and the generator, multiple generators can be driven simultaneously to meet the demand for high-power generation and solve the problem of insufficient power generation capacity of a single generator.

[0052] In an alternative embodiment, the main casing 4 has a main casing mounting edge 7, and the main casing mounting edge 7 is fixedly connected to the engine; specifically, the main casing mounting edge 7 is fixedly connected to the intake casing of the engine by bolts or studs.

[0053] The output casing 5 is provided with an output casing mounting edge 8, and the output casing mounting edge 8 and the generator can be fixedly connected by stud bolts or bolts. The output gears 3 in this embodiment can be two, and the two output gears 3 and an input gear 1 can be distributed in a "pin" shape, which can reduce weight and save space dimensions, making the force on the output casing 5 more stable. In addition to being distributed in a "pin" shape in space, the 3 generators can also adopt other installable distribution forms, such as a "one" shape distribution. This embodiment is not limited thereto. It should be noted that the output gears 3 in this application can be multiple, so that the engine can drive multiple generators to work simultaneously.

[0054] The main casing mounting edge 7 and the output casing mounting edge 8 can effectively absorb and mitigate the vibration and impact generated during the operation of the engine and the generator, protect the internal components, and extend the service life of the equipment. Through the mounting edge design, it is more convenient to install and disassemble the engine and the generator, simplifies the maintenance and overhaul process, and improves work efficiency. The mounting edge system can distribute the load more evenly, reduce local stress, lower the risk of structural damage, and ensure the stability and safety of the system. During operation, the engine and the generator will generate dimensional changes due to thermal expansion. The mounting edge design can adapt to these changes and avoid structural damage caused by thermal expansion. The mounting edge design of the main casing 4 and the output casing 5 enhances the integration of the entire power system, makes the connection between components closer, and improves the overall performance of the system.

[0055] In an alternative embodiment, the generator is connected to the input gear 1 and the generator is connected to the output gear 3 by splines. Specifically, the input gear 1 and the output gear 3 can both be crowned gears. On the middle parts of the input gear 1 and the output gear 3, there are hubs protruding towards both sides. The hubs are hollow structures and are provided with internal splines on the inner sides. On the rotating shafts of the generator connected to the hubs, there are matching external splines, thereby realizing spline connection. In addition, a hollow connecting shaft can be fixedly connected to the middle parts of the input gear 1 and the output gear 3, and internal splines can be provided on the inner side of the connecting shaft, which can also realize spline connection with the external splines on the generator rotating shaft. Similarly, the input gear 1 and the output shaft of the engine can be connected in the same way as above.

[0056] It should be noted that the generator can also be connected to the input gear 1 and the generator can also be connected to the output gear 3 by flanges.

[0057] The spline connection can provide a larger contact area, ensuring efficient power transmission between the generator and the input and output gears 3, reducing energy loss, and improving the overall efficiency of the system. The spline connection has good anti-torsion performance and can withstand large torques, ensuring the stable operation of the generator under high-load conditions and avoiding connection failure caused by excessive torque.

[0058] In an alternative embodiment, a first through hole is provided on the casing, the first through hole penetrates through the side walls of the main casing 4 and the output casing 5 respectively, and the input gear 1 is disposed within the first through hole; the casing may form a rotating body, the first through hole may be opened parallel to the central axis of the rotating body, and the idler gear 2 may be disposed at the position of the central axis of the rotating body.

[0059] Two first support bearings 10 are sleeved on the input gear 1 and the two first support bearings 10 are respectively located within the side walls of the main casing 4 and the output casing 5. The inner rings of the two first support bearings 10 are in interference fit with the input gear 1, and the outer rings of the two first support bearings 10 are in transitional fit with the first through hole;

[0060] Two first locking nuts 11 are screwed onto the input gear 1, and the two first support bearings 10 are both located between the two first locking nuts 11, adapted to lock the two first support bearings 10 onto the input gear 1;

[0061] One end of the first through hole located on the main casing 4 communicates with the intake casing of the engine.

[0062] In this application, by providing two first support bearings 10 on the input gear 1, the load of the input gear 1 can be effectively dispersed, its stability can be enhanced, and wear and failures caused by uneven load can be reduced. The interference fit design of the first support bearings 10 can ensure the precise positioning of the input gear 1 during operation, reduce axial and radial clearances, thereby improving the transmission accuracy and ensuring the efficient operation of the system. It can effectively reduce the vibration and noise of the input gear 1 during operation, improve the smoothness and comfort of the system, and reduce the impact on the surrounding environment. By providing the first through hole, it is convenient to inspect and replace the input gear 1 and its support bearings, simplifies the maintenance process, and reduces the maintenance cost. The first through hole helps the flow of lubricating oil or cooling oil, ensures good lubrication of the input gear 1 and the support bearings, reduces friction and wear, and extends the service life of the components. By making the outer side of the first support bearings 10 in interference fit with the first through hole, the strength of the entire structure can be enhanced, the load-bearing capacity of the system can be improved, and safe operation under high load conditions can be ensured. The first through hole helps to dissipate heat, prevents component damage caused by overheating, and ensures the reliability of the system during long-term operation. The first locking nut 11 can ensure the fixed position of the first support bearings 10, further improve the assembly accuracy, and avoid failures caused by loosening.

[0063] In an alternative embodiment, a first positioning sleeve 12 is sleeved on one end of the input gear 1 close to the generator, and the first positioning sleeve 12 is located between the first support bearing 10 and the first locking nut 11;

[0064] A first sealing device 13 is sleeved on the outer side of the first positioning sleeve 12, and both the first positioning sleeve 12 and the first sealing device 13 are located within the side wall of the output casing 5;

[0065] It should be noted that during installation, the first support bearing 10 can be installed first, then the first sealing device 13, then the first positioning sleeve 12, and finally the first locking nut 11.

[0066] A first protrusion may be provided at one end of the output casing 5 where the first through hole is located, and the first sealing device 13 and the first support bearing 10 located within the side wall of the output casing 5 may be respectively located on both sides of the first protrusion and respectively abut against both sides of the first protrusion; the first through hole can be divided into a main casing part and an output casing part, the first support bearing 10 can be respectively provided on the main casing part and the output casing part, and the first sealing device 13 and the first positioning sleeve 12 are provided on the output casing part.

[0067] A first abutting member may be provided between the first positioning sleeve 12 and the first support bearing 10, one side of the first abutting member abuts against the first positioning sleeve 12 and the first sealing device 13 respectively, and the other end may abut against the first support bearing 10.

[0068] The first support bearing 10, the first sealing device 13, the first locking nut 11, and the first positioning sleeve 12 can be respectively arranged on the hub of the input gear 1, and the gear part can be arranged in the casing cavity 6.

[0069] The first locking nut 11 is adapted to fix the first support bearing 10 on the input gear 1 through the first positioning sleeve 12. The first sealing device 13 can effectively prevent lubricating oil leakage and external contaminants from entering the casing cavity 6, protect the internal components of the casing cavity 6, extend its service life, ensure the normal operation of the system. The cooperation among the first positioning sleeve 12, the first support bearing 10, and the first locking nut 11 enhances the strength of the entire structure, improves the load-bearing capacity of the system under high-load conditions, and ensures safe operation. By connecting the first through-hole to the intake casing of the engine, the heat in the casing cavity 6 can be effectively managed, promoting the dissipation of the heat in the casing cavity 6, preventing component damage caused by overheating, ensuring the reliability of the system, and also enabling the oil circuit in the casing cavity 6 to be connected to the oil circuit of the engine, thus sharing a set of lubrication systems. The first sealing device 13 and the first positioning sleeve 12 can make maintenance and replacement more convenient, reduce the complexity of disassembly and assembly, and lower the maintenance cost. By abutting the first sealing device 13 and the support bearing against both sides of the first protrusion, the vibration and noise of the input gear 1 during operation can be effectively reduced, improving the smoothness and comfort of the system, and at the same time preventing the input gear 1 from moving axially.

[0070] In an alternative embodiment, the main casing 4 is provided with an oil inlet and an oil return port. One end of the oil inlet and one end of the oil return port are both connected to the casing cavity 6. The other end of the oil inlet is connected to the inner oil circuit of the engine, and the other end of the oil return port is connected to the oil return system of the engine. Specifically, the oil inlet can be arranged on the side wall between the first through-hole and the main casing mounting edge 7 of the main casing 4, and the oil return port can be arranged on the side wall between the idler gear 2 and the output gear 3 of the main casing 4.

[0071] The oil inlet is connected to the inner oil circuit of the engine to ensure that the lubricating oil can be timely and effectively delivered to the components that need lubrication, reduce friction and wear, and extend the service life of the equipment. The oil return port enables the lubricating oil to form a good circulation within the system, avoid oil retention, ensure that the temperature and performance of the lubricating oil are maintained in the best state, and improve the lubrication effect. By connecting the oil return port to the engine's oil return system, the heat in the lubricating oil can be effectively removed, preventing the lubricating oil from overheating, maintaining its viscosity and lubrication performance, and ensuring the stable operation of the system. The oil inlet and oil return port can effectively prevent external contaminants from entering the lubrication system, protect the internal components, ensure the cleanliness of the lubricating oil, and enhance the reliability of the system. By setting the oil inlet and oil return port, maintenance personnel can more conveniently replace the lubricating oil and inspect the system, reduce maintenance costs, and improve work efficiency. The oil inlet and oil return port enable the engine's lubrication system to be closely integrated with the casing cavity 6, share a set of lubrication systems, and form an efficient overall structure, enhancing the reliability and stability of the system.

[0072] In an alternative embodiment, two second support bearings 14 are sleeved on the output gear 3 and are respectively located within the side walls of the main casing 4 and the output casing 5. The inner rings of the two second support bearings 14 are in interference fit with the input gear 1, and the outer rings of the two second support bearings 14 are in transitional fit with the main casing 4 and the output casing 5 respectively;

[0073] Two second locking nuts 15 are screwed onto the input gear 1, and the two second support bearings 14 are both located between the two second locking nuts 15.

[0074] Two second support bearings 14 are respectively located inside the side walls of the main housing 4 and the output housing 5, which can effectively support the output gear 3, prevent it from having axial and radial displacements during operation, and improve the stability and reliability of the system. Through the interference fit with the input gear 1, the second support bearings 14 can effectively disperse the load, reduce the direct contact and friction between the gears, thereby reducing wear and extending the service life of the gears and bearings. It can reduce the deformation and vibration of the input gear 1, ensure the meshing accuracy of the input gear 1 during operation, thereby improving the transmission efficiency and reducing energy loss. The two second locking nuts 15 can make the installation and fixation of the support bearings more convenient, enabling maintenance personnel to conduct inspections and replacements more easily, and reducing the maintenance cost. Through the interference fit method, the second support bearings 14 respectively form a tight connection with the main housing 4 and the output housing 5, enhancing the strength of the overall structure and enabling it to withstand greater working loads. The second support bearings 14 can effectively absorb and mitigate the vibration generated during gear operation, reduce noise, and improve the running smoothness of the system. Arranging the second support bearings 14 inside the side walls of the main housing 4 and the output housing 5 helps to optimize the space layout, reduce the overall volume of the system, and improve the compactness of the design. The second locking nuts 15 can effectively prevent the second support bearings 14 from loosening or falling off, enhance the overall reliability of the system, and ensure long-term stable operation.

[0075] In an alternative embodiment, a second positioning sleeve 16 is sleeved on one end of the output gear 3 close to the generator, and the second positioning sleeve 16 is located between the second support bearing 14 and the second locking nut 15;

[0076] A second sealing device 17 is sleeved on the outer side of the second positioning sleeve 16, and both the second positioning sleeve 16 and the second sealing device 17 are located inside the side wall of the output housing 5.

[0077] It should be noted that during installation, the second support bearing 14 can be installed first, then the second sealing device 17, then the second positioning sleeve 16, and finally the second locking nut 15.

[0078] The second support bearing 14, the second positioning sleeve 16, the second locking nut 15, and the second sealing device 17 can be respectively arranged on the hub of the output gear 3.

[0079] The first sealing device 13 and the second sealing device 17 may be sealing rings. A second through hole may also be provided on the casing. The output gear 3 may be arranged in the second through hole. A end cover may be provided at the port of the main casing 4 where the second through hole is located for sealing. A second abutting member may be arranged between the second positioning sleeve 16 and the second support bearing 14. One side of the second abutting member may respectively abut against the second positioning sleeve 16 and the second sealing device 17, and the other side of the second abutting member may abut against the second support bearing 14. A second protrusion may be provided on one side of the output casing 5 within the second through hole. The second support bearing 14 and the second sealing device 17 respectively abut against both sides of the second protrusion.

[0080] The second positioning sleeve 16 can effectively maintain the stability of the output gear 3 in its working position, prevent its displacement during operation, and thus ensure the meshing accuracy and transmission efficiency of the gears. The design of the second sealing device 17 can effectively prevent the leakage of lubricating oil or other liquids, while preventing external contaminants (such as dust, moisture, etc.) from entering the system, protecting internal components, and extending the service life of the equipment. By providing good sealing and positioning, the friction and wear between the gears and other components can be reduced, the maintenance frequency and cost can be lowered. The combined use of the second positioning sleeve 16 and the second sealing device 17 can effectively prevent failures caused by the loosening of the output gear 3 or the leakage of lubricating oil, improving the reliability and stability of the entire system. The good sealing design reduces the consumption and replacement frequency of lubricating oil, making it more convenient for maintenance personnel to conduct inspections and maintenance, and reducing the maintenance cost. Arranging the second positioning sleeve 16 and the second sealing device 17 within the side wall of the output casing 5 helps to optimize the spatial layout, reduce the overall volume of the system, and improve the compactness of the design. Through effective sealing and positioning, the vibration and noise generated during the operation of the output gear 3 can be reduced, improving the running smoothness of the system and enhancing the user experience. The second positioning sleeve 16 enhances the structural strength of the output gear 3, enabling it to withstand greater working loads and ensuring the stable operation of the system under high load conditions.

[0081] Threadings may be respectively provided on the outer surfaces of the end sides of the hubs of the input gear 1 and the output gear 3, which are adapted to be screwed with the first locking nut 11 and the second locking nut 15 respectively.

[0082] In an alternative embodiment, a plurality of ventilation holes 18 are provided on the output casing 5. The ventilation holes 18 are close to the mounting edge 8 of the output casing. A generator heat dissipation ventilation plug is provided at the opening of the ventilation holes 18.

[0083] The vent hole 18 helps to discharge the hot air flow generated during the operation of the generator, improve the working environment around the equipment, and enhance the comfort of the operator. The generator cooling vent plug can prevent external dust and pollutants from entering the inside of the vent hole 18, protect the internal components, and reduce the maintenance requirements.

[0084] It should be noted that the vent hole 18 is not communicated with the inner side of the casing cavity, and both ports of the vent hole 18 are provided on the output casing 5.

[0085] Two third support bearings can be sleeved on the idler wheel 2 and are respectively located inside the side walls of the main casing 4 and the output casing 5. The inner sides of the two third support bearings are in interference fit with the input gear 1, and the outer sides of the two third support bearings are in interference fit with the main casing 4 and the output casing 5 respectively;

[0086] Two third locking nuts are screwed on the input gear 1, and the two third support bearings are both located between the two third locking nuts.

[0087] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A split reducer for a high-power hybrid electric power system, used for an engine to drive a plurality of generators, characterized in that: include: A casing, comprising a main casing (4) and an output casing (5), wherein the main casing (4) and the output casing (5) are fixedly connected and a casing cavity (6) is formed between the main casing (4) and the output casing (5); An input gear (1) passes through the casing and is rotatably connected to the casing; An idler wheel (2) is rotatably disposed in the casing cavity (6), and the input gear (1) is meshed with the idler wheel (2); an output gear (3) rotatably disposed on the casing, and the output gear (3) meshes with the idler gear (2); One end of the input gear (1) is connected to an engine, and the other end is connected to a generator. There is at least one output gear (3). The end of the output gear (3) away from the engine passes through the casing and is connected to the generator. The engine is located on a side close to the main casing (4), and the generator is located on a side close to the output casing (5) and is evenly distributed.

2. The split reducer for a high-power hybrid electric power system according to claim 1, characterized in that: The main casing (4) is provided with a main casing mounting edge (7), and the main casing mounting edge (7) is fixedly connected to the engine.

3. The split reducer for a high-power hybrid electric power system according to claim 2, characterized in that: The output casing (5) is provided with an output casing mounting edge (8), and the output casing mounting edge (8) is fixedly connected to the generator.

4. The split reducer for a high-power hybrid electric power system according to claim 1, characterized in that: The generator and the input gear (1), as well as the generator and the output gear (3), are connected via splines, and the input gear (1) and the engine power output shaft are connected via splines.

5. The split reducer for a high-power hybrid electric power system according to claim 2, characterized in that: The casing is provided with a first through hole, the first through hole respectively penetrating the side walls of the main casing (4) and the output casing (5), and the input gear (1) is arranged in the first through hole; Two first support bearings (10) are mounted on the input gear (1), and the two first support bearings (10) are respectively located on the main housing (4) side and the output housing (5) side, the inner rings of the two first support bearings (10) are interference fit with the input gear (1), and the outer rings of the two first support bearings (10) are transition fit with the first through hole; The input gear (1) is threaded with two first locking nuts (11), which are suitable for locking the two first support bearings (10) on the input gear (1); One end of the first through hole located on the main casing (4) is connected to the air intake casing of the engine.

6. The split reducer for a high-power hybrid electric power system according to claim 5, characterized in that: The input gear (1) is sleeved with a first sealing device (13) and a first positioning sleeve (12); the first positioning sleeve (12) is located between the first sealing device (13) and the input gear (1); and the first locking nut (11) is suitable for making the first positioning sleeve (12) abut against the first support bearing (10); The first positioning sleeve (12) and the first sealing device (13) are both located on the output casing (5) side.

7. The split reducer for a high-power hybrid electric power system according to claim 2, characterized in that: The main casing (4) is provided with an oil inlet and an oil return port, one end of the oil inlet and one end of the oil return port are both in communication with the casing cavity (6), the other end of the oil inlet is in communication with the inner oil circuit of the engine, and the other end of the oil return port is in communication with the oil return system of the engine.

8. The split reducer for a high-power hybrid electric power system according to claim 2, characterized in that: The output gear (3) is provided with two second support bearings (14) which are respectively located on the main housing (4) side and the output housing (5) side; the inner rings of the two second support bearings (14) are interference fit with the input gear (1); and the outer rings of the two second support bearings (14) are transition fit with the main housing (4) and the output housing (5) respectively; The output gear (3) is threaded with two second locking nuts (15) suitable for locking the two second support bearings (14) on the output gear (3).

9. The split reducer for a high-power hybrid electric power system according to claim 8, characterized in that: The output gear (3) is sleeved with a second sealing device (17) and a second positioning sleeve (16), the second positioning sleeve (16) is located between the second sealing device (17) and the output gear (3), and the second locking nut (15) is suitable for making the second positioning sleeve (16) abut against the second support bearing (14); The second positioning sleeve (16) and the second sealing device (17) are both located on the output casing (5) side.

10. The split reducer for a high-power hybrid electric power system according to claim 3, characterized in that: The output casing (5) is provided with a plurality of ventilation holes (18), the ventilation holes (18) are close to the output casing mounting edge (8), and the openings of the ventilation holes (18) are provided with generator heat dissipation ventilation plugs.

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