Agricultural machine power system and agricultural machine

Abstract

The utility model belongs to the technical field of agricultural machinery, and discloses an agricultural machinery power system and agricultural machinery, in the agricultural machinery power system, when the electric quantity stored by an energy storage unit is sufficient, only a motor is started to supply power to a walking system and a PTO system, and when the electric quantity stored by the energy storage unit is reduced, the motor is started to supply power to the walking system and the PTO system. The power generator can be driven by the engine to work and supply power to the energy storage unit, and the energy storage unit supplies power to the motor, so that the energy storage unit can be charged while the agricultural machine walks and controls other machine tools to work, and the endurance is improved; in addition, the motor serving as a single power source can provide power for the walking system and can also provide power for the PTO system through the PTO input shaft, so that the motor can provide power for the walking system and the PTO system at the same time, the rotating speed of the PTO input shaft meets the actual requirement of the operation machine tool through the PTO speed change mechanism, and through the arrangement of the single power source, the operation machine tool is more convenient to use. The overall structure of agricultural machinery can be simplified, and the energy utilization rate is high.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to agricultural machinery power systems and agricultural machinery. Background Technology

[0002] The power systems of agricultural machinery such as tractors need to provide power not only for their own traction but also to adapt to the operational needs of other implements, such as plowing, harrowing, rotary tilling, sowing and fertilizing, harvesting and silage. The current conventional solution is to transmit power to implements such as rotary tillers, seeders, mowers, silage harvesters, balers, and sprayers via a PTO (Power Take-Off) system. However, this approach has the following two problems:

[0003] 1) Current agricultural machinery usually adopts a dual power source structure, generally consisting of one engine and one motor, or two motors. One power source drives the walking system, and the other power source drives the PTO system. The overall structure is complex and the energy utilization rate is low.

[0004] 2) With the rapid development of power battery and motor technology, more and more agricultural machinery has begun to use electric motors as a power source. However, the disadvantage is that the operating time is short, so a large number of batteries are required, which makes the whole machine heavy and costly. Utility Model Content

[0005] According to one aspect of the present invention, the present invention provides a power system for agricultural machinery to solve the problems of complex overall structure, low energy utilization rate, and short operating time of some agricultural machinery that uses electric motors as power sources in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An agricultural machinery power system, used to provide power to the walking system and PTO system of agricultural machinery, wherein the PTO system has a PTO input shaft; comprising:

[0008] engine;

[0009] A generator, connected to the engine output shaft of the engine, is capable of generating electricity;

[0010] An energy storage unit is used to store the electrical energy generated by the generator;

[0011] An electric motor is connected to the energy storage unit, which can supply power to the motor. The motor output shaft is used to provide power to the walking system.

[0012] The PTO transmission mechanism is used to connect between the motor output shaft and the PTO input shaft, and to change the transmission ratio between the motor output shaft and the PTO input shaft.

[0013] As a preferred option for the power system of agricultural machinery, the PTO transmission mechanism includes:

[0014] Planetary gear mechanism, including sun gear, planet carrier and gear ring;

[0015] A speed regulating mechanism is connected to an input shaft and an output shaft, and is used to change the transmission ratio between the input shaft and the output shaft. The input shaft is connected to the engine output shaft.

[0016] The motor output shaft is connected to a first of the sun gear, the planet carrier, and the ring gear; the speed regulating mechanism output shaft is connected to a second of the sun gear, the planet carrier, and the ring gear; and the PTO input shaft is connected to a third of the sun gear, the planet carrier, and the ring gear.

[0017] As a preferred embodiment of the power system for agricultural machinery, the speed regulating mechanism includes a working pump and a hydraulic motor. The input end of the working pump is connected to the input shaft of the speed regulating mechanism, the input end of the hydraulic motor is connected to the output end of the working pump, and the output end of the hydraulic motor is connected to the output shaft of the speed regulating mechanism.

[0018] As a preferred embodiment of the power system for agricultural machinery, the motor output shaft is connected to the sun gear, the speed regulating mechanism output shaft is connected to the gear ring, and the PTO input shaft is connected to the planetary carrier.

[0019] As a preferred embodiment of the power system for agricultural machinery, a third of the sun gear, the planet carrier, and the ring gear is connected to the PTO input shaft via a PTO clutch. The PTO clutch is used to connect or disconnect the power transmission between the sun gear, the planet carrier, and the ring gear and the PTO input shaft.

[0020] As a preferred embodiment of the power system for agricultural machinery, the walking system has a walking system input shaft, and the motor output shaft is connected to the walking system input shaft through a walking system speed change mechanism, which is used to change the transmission ratio between the motor output shaft and the walking system input shaft.

[0021] As a preferred embodiment of the power system for agricultural machinery, the transmission mechanism of the walking system includes a first input gear connected to the output shaft of the motor, a second input gear connected to the output shaft of the motor, a first output gear meshing with the first input gear, and a second output gear meshing with the second input gear. The input shaft of the walking system can rotate synchronously with the first output gear or synchronously with the second output gear.

[0022] As a preferred embodiment of the power system for agricultural machinery, the walking system includes a front axle and a rear axle; the input shaft of the walking system is connected to the rear axle.

[0023] As a preferred embodiment of the power system for agricultural machinery, the input shaft of the walking system is connected to the front axle via a front axle clutch, which is used to connect or disconnect the power transmission between the input shaft of the walking system and the front axle.

[0024] According to another aspect of the present invention, agricultural machinery is provided, including the above-mentioned agricultural machinery power system, and further including a walking system and a PTO system, wherein the agricultural machinery power system is used to provide power to the walking system and the PTO system.

[0025] The beneficial effects of this utility model are:

[0026] This utility model provides an agricultural machinery power system for providing power to the walking system and PTO system of agricultural machinery. The PTO system has a PTO input shaft. The agricultural machinery power system includes an engine, a generator, an energy storage unit, a motor, and a PTO transmission mechanism. The generator is connected to the engine output shaft and can generate electricity. The energy storage unit is used to store the electricity generated by the generator. The motor is connected to the energy storage unit and can supply power to the motor. The motor output shaft is used to provide power to the walking system. The PTO transmission mechanism is used to connect between the motor output shaft and the PTO input shaft and to change the transmission ratio between the motor output shaft and the PTO input shaft. In this agricultural machinery power system, on the one hand, when the energy storage unit has sufficient stored power, only the motor needs to be turned on to power the walking system and the PTO system. When the stored power in the energy storage unit decreases, the engine can drive the generator to work and power the energy storage unit, which in turn powers the motor. This allows the agricultural machinery to charge the energy storage unit while walking and controlling other implements, thus extending its range. On the other hand, the motor, as a single power source, can provide power to the walking system and also drive the PTO input shaft to rotate through the PTO transmission mechanism, thereby providing power to the PTO system. This allows the motor to simultaneously power both the walking system and the PTO system. Furthermore, the PTO transmission mechanism ensures that the speed of the PTO input shaft meets the actual needs of the implements. By using a single power source, the overall structure of the agricultural machinery can be simplified, resulting in high energy utilization.

[0027] This utility model also provides agricultural machinery, including the aforementioned agricultural machinery power system, as well as a walking system and a PTO system. The agricultural machinery power system provides power to both the walking system and the PTO system. In this agricultural machinery power system, on the one hand, when the energy storage unit has sufficient stored power, only the motor needs to be turned on to power the walking system and the PTO system. When the stored power in the energy storage unit decreases, the engine can drive the generator to work and power the energy storage unit, which in turn powers the motor. This allows the agricultural machinery to charge the energy storage unit while walking and controlling other implements, thus extending its range. On the other hand, the motor, as a single power source, can provide power to the walking system and also drive the PTO input shaft to rotate through the PTO transmission mechanism, thereby providing power to the PTO system. This allows the motor to simultaneously power both the walking system and the PTO system. Furthermore, the PTO transmission mechanism ensures that the PTO input shaft speed meets the actual needs of the implements. The single power source simplifies the overall structure of the agricultural machinery and results in high energy utilization. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the agricultural machinery power system in an embodiment of this utility model.

[0029] In the picture:

[0030] 100. Walking system; 101. Walking system input shaft; 110. Front axle; 120. Rear axle; 121. Rear axle input shaft; 122. Rear axle input gear; 123. Rear axle connecting gear; 124. Rear axle differential; 125. Second coupling; 130. Front axle clutch; 141. Fifth transmission gear; 142. Sixth transmission gear; 143. Seventh transmission gear; 144. Eighth transmission gear;

[0031] 200, PTO input axis;

[0032] 1. Engine; 11. Engine output shaft; 12. First coupling;

[0033] 2. Generator; 21. Generator control unit; 22. Power distribution unit; 23. Drive motor control unit; 24. Generator stator; 25. Generator rotor; 26. Generator input shaft;

[0034] 3. Energy storage unit;

[0035] 4. Motor; 41. Motor output shaft; 42. Motor stator; 43. Motor rotor;

[0036] 5. PTO transmission mechanism; 51. Planetary gear mechanism; 511. Sun gear; 512. Planet carrier; 513. Ring gear; 52. Speed ​​regulating mechanism; 521. Input shaft of speed regulating mechanism; 522. Output shaft of speed regulating mechanism; 523. Working pump; 524. Hydraulic motor; 53. PTO clutch; 54. First transmission gear; 55. Second transmission gear; 56. Third transmission gear; 57. First transmission shaft; 58. Second transmission shaft;

[0037] 6. Transmission mechanism of the walking system; 61. First input gear; 62. Second input gear; 63. First output gear; 64. Second output gear; 65. First clutch; 66. Second clutch; 67. Fourth transmission gear. Detailed Implementation

[0038] 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, not the entire structure.

[0039] 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.

[0040] 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.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "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.

[0042] Existing agricultural machinery transmits power to implements such as rotary tillers, seeders, mowers, forage harvesters, balers, and sprayers via a PTO (Power Take-Off) system. The problems with this system are twofold. First, current agricultural machinery typically employs a dual-power-source structure, generally consisting of one engine and one motor, or two motors. One power source drives the walking system, while the other powers the PTO system, resulting in a complex overall structure and low energy efficiency. Second, with the rapid development of battery and motor technology, more and more agricultural machinery is adopting electric motors as its power source. However, this results in short operating times and necessitates the installation of numerous batteries, leading to increased weight and cost.

[0043] In response, this embodiment provides an agricultural machinery power system to solve the problems of complex overall structure, low energy utilization rate, and short operating time of some agricultural machinery using electric motors as power sources in the prior art. It can be used in the field of agricultural machinery technology, and can be specifically applied to tractors.

[0044] Reference Figure 1 The agricultural machinery power system provides power to the walking system 100 and the PTO system of the agricultural machinery. The PTO system has a PTO input shaft 200. The agricultural machinery power system includes an engine 1, a generator 2, an energy storage unit 3, a motor 4, and a PTO transmission mechanism 5. The generator 2 is connected to the engine output shaft 11 of the engine 1 and can generate electricity. The energy storage unit 3 is used to store the electricity generated by the generator 2. The motor 4 is connected to the energy storage unit 3 and the energy storage unit 3 can supply power to the motor 4. The motor output shaft 41 of the motor 4 is used to provide power to the walking system 100. The PTO transmission mechanism 5 is used to connect the motor output shaft 41 and the PTO input shaft 200 and to change the transmission ratio between the motor output shaft 41 and the PTO input shaft 200. In this agricultural machinery power system, on the one hand, when the energy storage unit 3 has sufficient stored power, only the motor 4 needs to be turned on to power the walking system 100 and the PTO system. When the stored power in the energy storage unit 3 decreases, the engine 1 can drive the generator 2 to work and power the energy storage unit 3, which in turn powers the motor 4. This allows the agricultural machinery to charge the energy storage unit 3 while walking and controlling other implements, thus extending its range. On the other hand, the motor 4, as a single power source, can provide power to the walking system 100 and can also drive the PTO input shaft 200 to rotate through the PTO transmission mechanism 5, thereby providing power to the PTO system. This allows the motor 4 to simultaneously power both the walking system 100 and the PTO system. Furthermore, the PTO transmission mechanism 5 ensures that the rotational speed of the PTO input shaft 200 meets the actual needs of the implements. The single power source simplifies the overall structure of the agricultural machinery and results in high energy utilization.

[0045] Optionally, the generator 2 includes a generator stator 24 and a generator rotor 25 that can rotate relative to the generator stator 24. The generator rotor 25 is connected to a generator input shaft 26. The engine output shaft 11 is connected to the generator input shaft 26 through a first coupling 12. The generator rotor 25 can rotate relative to the generator stator 24 under the drive of the generator input shaft 26 to generate electricity.

[0046] Optionally, generator 2 is electrically connected to generator control unit 21 (GCU), generator control unit 21 is electrically connected to power distribution unit 22 (PDU), power distribution unit 22 (PDU) is also connected to energy storage unit 3 and drive motor control unit 23 (MCU), and drive motor control unit 23 is electrically connected to motor 4. When engine 1 is running, generator 2 generates electricity under the control of generator control unit 21 (GCU), and then the electricity is distributed by power distribution unit 22 (PDU). Part of the electricity is stored in energy storage unit 3, and part of the electricity is sent to drive motor control unit 23, and finally used to power motor 4. When engine 1 is not running, i.e., in pure electric mode, the energy storage unit 3 supplies power, and motor 4 operates under the control of drive motor control unit 23.

[0047] Optionally, the motor 4 includes a motor stator 42 and a motor rotor 43 that can rotate relative to the motor stator 42. When the motor 4 is powered on, the motor rotor 43 rotates relative to the motor stator 42. The motor output shaft 41 is disposed on the motor rotor 43 and can rotate under the drive of the motor rotor 43.

[0048] In addition to the problems mentioned above, existing technologies also have the following two issues:

[0049] 1) Power sources such as engines and motors need to provide power to both the PTO system and the walking system. The power source and the PTO system are mechanically connected. Changes in the walking speed of agricultural machinery or changes in the load during the operation of the implements will cause changes in the speed of the power source, resulting in changes in the final output speed of the PTO system. This will in turn change the operating state of the implements. For example, the sowing speed or spraying speed may differ from the previous operating time, resulting in uneven work quality of the implements.

[0050] 2) PTO systems typically only have high and low gears, making precise adjustment of the PTO output speed impossible. For specialized equipment such as water pumps and generators, the power source speed needs to be changed to match the equipment's speed requirements, resulting in complex control logic. Furthermore, when the power source is an engine, this may increase fuel consumption. Different operating conditions, such as plowing, rotary tilling, sowing and fertilizing, harvesting silage, and transportation, have varying speed requirements. When load or speed changes exceed a certain threshold, gear shifting is necessary before resuming operations, affecting the continuity of work.

[0051] In this regard, we will continue to refer to Figure 1In the agricultural machinery power system provided in this embodiment, the PTO transmission mechanism 5 includes a planetary gear mechanism 51 and a speed regulating mechanism 52. The planetary gear mechanism 51 includes a sun gear 511, a planet carrier 512, and a ring gear 513. The planet carrier 512 is connected to the outer periphery of the sun gear 511 and meshes with it. The ring gear 513 is connected to the outer periphery of the planet carrier 512 and meshes with it. The planetary gear mechanism 51 is a common structure in the art, and its specific structure and working principle will not be described in detail. The speed regulating mechanism 52 connects the speed regulating mechanism input shaft 521 and the speed regulating mechanism output shaft 522, and is used to change the transmission ratio between the speed regulating mechanism input shaft 521 and the speed regulating mechanism output shaft 522. The speed regulating mechanism input shaft 521 is connected to the engine output shaft 11. The motor output shaft 41 is connected to one of the sun gear 511, the planet carrier 512, and the ring gear 513. The speed regulating mechanism output shaft 522 is connected to the second of the sun gear 511, the planet carrier 512, and the ring gear 513. The PTO input shaft 200 is connected to the sun gear. The speed regulating mechanism 52 drives a third of the three components (sun gear 511, planet carrier 512, and ring gear 513) to rotate, thereby enabling the motor 4 to drive a first component (sun gear 511, planet carrier 512, and ring gear 513) to rotate. The speed regulating mechanism 52 drives a second component (sun gear 511, planet carrier 512, and ring gear 513) to rotate, which in turn drives the third component (sun gear 511, planet carrier 512, and ring gear 513) to rotate, thus driving the PTO input shaft 200 to rotate. In other words, two of these components serve as the power input, and the remaining component serves as the power output. This configuration allows the speed regulating mechanism 52 to change the transmission ratio between its input shaft 521 and output shaft 522, adjusting the speed of the second component (sun gear 511, planet carrier 512, and ring gear 513), thereby achieving stepless speed regulation of the third component (sun gear 511, planet carrier 512, and ring gear 513) and adjusting the direction of rotation.

[0052] Optionally, the speed regulating mechanism 52 includes a working pump 523 and a hydraulic motor 524. The input end of the working pump 523 is connected to the input shaft 521 of the speed regulating mechanism, and the input end of the hydraulic motor 524 is connected to the output end of the working pump 523. The output end of the hydraulic motor 524 is connected to the output shaft 522 of the speed regulating mechanism, thereby achieving stepless speed regulation or changing the rotation direction of the output shaft 522 of the speed regulating mechanism during the process of the working pump 523 driving the hydraulic motor 524. The input shaft 521 of the speed regulating mechanism can be connected to the engine output shaft 11 via a structure such as a flywheel. The output shaft 522 of the speed regulating mechanism is fixedly connected to a first transmission gear 54, which meshes with a gear ring 513. The working pump 523 and the hydraulic motor 524 are common structures in the art, and their specific structures and working principles will not be described in detail.

[0053] Specifically, in this embodiment, the motor output shaft 41 is connected to the sun gear 511, the speed regulating mechanism output shaft 522 is connected to the gear ring 513, and the PTO input shaft 200 is connected to the planetary carrier 512, so that the motor output shaft 41 and the sun gear 511 can be coaxially arranged, simplifying the structure. Furthermore, the speed regulating mechanism output shaft 522 is connected to the gear ring 513 through the first transmission gear 54, which facilitates the connection between the speed regulating mechanism output shaft 522 and the planetary gear mechanism 51.

[0054] Optionally, a third of the sun gear 511, planet carrier 512, and ring gear 513 is connected to the PTO input shaft 200 via a PTO clutch 53. The PTO clutch 53 is used to connect or disconnect the power transmission between the sun gear 511, planet carrier 512, and ring gear 513 and the PTO input shaft 200. Specifically, it is used to connect or disconnect the power transmission between the planet carrier 512 and the PTO input shaft 200. In this embodiment, the planet carrier 512 is connected to a first drive shaft 57. The first drive shaft 57 is selectively connected to a second drive shaft 58 via the PTO clutch 53. The second drive shaft 58 is fixedly equipped with a second drive gear 55, and the PTO input shaft 200 is fixedly equipped with a third drive gear 56. The second drive gear 55 and the third drive gear 56 mesh, thereby enabling the planet carrier 512 to transmit power to the PTO input shaft 200 sequentially through the first drive shaft 57, the PTO clutch 53, the second drive shaft 58, the second drive gear 55, and the third drive gear 56. In other embodiments, the planetary carrier 512 and the PTO input shaft 200 can also be connected by other forms of transmission structures. The PTO clutch 53 can be a conventional clutch in the art, and its specific structure and working principle will not be described in detail here.

[0055] Continue to refer to Figure 1 The walking system 100 has a walking system input shaft 101. The motor output shaft 41 is connected to the walking system input shaft 101 through a walking system speed change mechanism 6. The walking system speed change mechanism 6 is used to change the transmission ratio between the motor output shaft 41 and the walking system input shaft 101, so that the walking system 100 also has the ability to change speed.

[0056] Specifically, the transmission mechanism 6 of the walking system includes a first input gear 61 connected to the motor output shaft 41, a second input gear 62 connected to the motor output shaft 41, a first output gear 63 meshing with the first input gear 61, and a second output gear 64 meshing with the second input gear 62. The walking system input shaft 101 can rotate synchronously with the first output gear 63 or synchronously with the second output gear 64. The diameter of the first input gear 61 is larger than the diameter of the first output gear 63. When the walking system input shaft 101 rotates synchronously with the first output gear 63, it corresponds to a high-speed gear. The diameter of the second input gear 62 is larger than the diameter of the second output gear 64. When the walking system input shaft 101 rotates synchronously with the second output gear 64, it corresponds to a low-speed gear.

[0057] Optionally, a fourth transmission gear 67 is fixedly connected to the input shaft 101 of the travel system. The fourth transmission gear 67 simultaneously connects a first clutch 65 and a second clutch 66. The first clutch 65 connects or disconnects the power transmission between the first output gear 63 and the fourth transmission gear 67, and the second clutch 66 connects or disconnects the power transmission between the second output gear 64 and the fourth transmission gear 67. Thus, the first clutch 65 connects or disconnects the input shaft 101 of the travel system from the first output gear 63, and the second clutch 66 connects or disconnects the input shaft 101 of the travel system from the second output gear 64. The first clutch 65 and the second clutch 66 can be conventional clutches in the art, and their specific structures and working principles will not be described in detail. As an alternative, the first clutch 65 and the second clutch 66 can be replaced with a coupling sleeve disposed on the input shaft 101 of the travel system. The coupling sleeve is also a common structure in the art, and its specific structure and working principle will not be described in detail.

[0058] Continue to refer to Figure 1 The running gear system 100 includes a front axle 110 and a rear axle 120. The running gear system input shaft 101 is connected to the rear axle 120, thereby achieving rear-drive. Specifically, the rear axle 120 includes a rear axle input shaft 121, a rear axle input gear 122 fixedly connected to the rear axle input shaft 121, a rear axle connecting gear 123 meshing with the rear axle input gear 122, and a rear axle differential 124 connected to the rear axle connecting gear 123. The running gear system input shaft 101 and the rear axle input shaft 121 are connected by a second coupling 125 to ensure that the running gear system input shaft 101 and the rear axle 120 are always connected. Power is transmitted sequentially to the rear axle differential 124 via the rear axle input shaft 121, the rear axle input gear 122, and the rear axle connecting gear 123. The rear axle differential 124 can be a relatively conventional differential in the art, and its specific structure and working principle will not be described in detail.

[0059] Continue to refer to Figure 1The drive system input shaft 101 is connected to the front axle 110 via a front axle clutch 130. The front axle clutch 130 is used to connect or disconnect the power transmission between the drive system input shaft 101 and the front axle 110. When the power transmission between the drive system input shaft 101 and the front axle 110 is connected, the drive system 100 operates in four-wheel drive mode; when the power transmission between the drive system input shaft 101 and the front axle 110 is disconnected, the drive system 100 operates only in rear-wheel drive mode. Specifically, a fifth transmission gear 141 is fixedly connected to the drive system input shaft 101. The fifth transmission gear 141 meshes with a sixth transmission gear 142, and the sixth transmission gear 142 meshes with a seventh transmission gear 143. The seventh transmission gear 143 is selectively connected to an eighth transmission gear 144 via the front axle clutch 130. The eighth transmission gear 144 is fixedly mounted on the front axle 110. The power from the input shaft 101 of the travel system is transmitted sequentially to the front axle 110 via the fifth transmission gear 141, the sixth transmission gear 142, the seventh transmission gear 143, the clutch 130, and the eighth transmission gear 144. The clutch 130 can be a conventional clutch in the art, and its specific structure and working principle will not be described in detail. In other embodiments, the input shaft 101 of the travel system and the front axle 110 can also be connected by other forms of transmission structure.

[0060] This embodiment also provides agricultural machinery, specifically a tractor. In other embodiments, the agricultural machinery may be other equipment requiring movement and control of implements. The agricultural machinery includes the aforementioned agricultural machinery power system, as well as a walking system 100 and a PTO system. The agricultural machinery power system provides power to the walking system 100 and the PTO system. In this agricultural machinery power system, on the one hand, when the energy storage unit 3 has sufficient stored power, only the motor 4 needs to be turned on to power the walking system 100 and the PTO system. When the stored power in the energy storage unit 3 decreases, the engine 1 can drive the generator 2 to work and power the energy storage unit 3, which in turn powers the motor 4. This allows the agricultural machinery to charge the energy storage unit 3 while walking and controlling other implements, thus extending its range. On the other hand, the motor 4, as a single power source, can provide power to the walking system 100 and can also drive the PTO input shaft 200 to rotate through the PTO transmission mechanism 5, thereby providing power to the PTO system. This allows the motor 4 to simultaneously power both the walking system 100 and the PTO system. Furthermore, the PTO transmission mechanism 5 ensures that the rotational speed of the PTO input shaft 200 meets the actual needs of the implements. The single power source simplifies the overall structure of the agricultural machinery and results in high energy utilization.

[0061] 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. An agricultural machinery power system for providing power to the walking system (100) and PTO system of agricultural machinery, said PTO system having a PTO input shaft (200); characterized in that, include: Engine (1); A generator (2) is connected to the engine output shaft (11) of the engine (1) and is capable of generating electricity; Energy storage unit (3) for storing the electrical energy generated by the generator (2); The motor (4) is connected to the energy storage unit (3), which can supply power to the motor (4). The motor output shaft (41) of the motor (4) is used to provide power to the walking system (100). The PTO transmission mechanism (5) is used to connect between the motor output shaft (41) and the PTO input shaft (200) and to change the transmission ratio between the motor output shaft (41) and the PTO input shaft (200).

2. The agricultural machinery power system according to claim 1, characterized in that, The PTO transmission mechanism (5) includes: The planetary gear mechanism (51) includes a sun gear (511), a planet carrier (512), and a gear ring (513); Speed ​​regulating mechanism (52) is connected to speed regulating mechanism input shaft (521) and speed regulating mechanism output shaft (522), and is used to change the transmission ratio between the speed regulating mechanism input shaft (521) and the speed regulating mechanism output shaft (522). The speed regulating mechanism input shaft (521) is connected to the engine output shaft (11). The motor output shaft (41) is connected to a first of the sun gear (511), the planet carrier (512), and the ring gear (513), the speed regulating mechanism output shaft (522) is connected to a second of the sun gear (511), the planet carrier (512), and the ring gear (513), and the PTO input shaft (200) is connected to a third of the sun gear (511), the planet carrier (512), and the ring gear (513).

3. The agricultural machinery power system according to claim 2, characterized in that, The speed regulating mechanism (52) includes a working pump (523) and a hydraulic motor (524). The input end of the working pump (523) is connected to the input shaft (521) of the speed regulating mechanism, the input end of the hydraulic motor (524) is connected to the output end of the working pump (523), and the output end of the hydraulic motor (524) is connected to the output shaft (522) of the speed regulating mechanism.

4. The agricultural machinery power system according to claim 2, characterized in that, The motor output shaft (41) is connected to the sun gear (511), the speed regulating mechanism output shaft (522) is connected to the gear ring (513), and the PTO input shaft (200) is connected to the planet carrier (512).

5. The agricultural machinery power system according to claim 2, characterized in that, The sun gear (511), the planet carrier (512), and the ring gear (513) are connected to the PTO input shaft (200) via a PTO clutch (53), which is used to connect or disconnect the power transmission between the sun gear (511), the planet carrier (512), and the ring gear (513) and the PTO input shaft (200).

6. The agricultural machinery power system according to claim 1, characterized in that, The walking system (100) has a walking system input shaft (101), and the motor output shaft (41) is connected to the walking system input shaft (101) through a walking system speed change mechanism (6). The walking system speed change mechanism (6) is used to change the transmission ratio between the motor output shaft (41) and the walking system input shaft (101).

7. The agricultural machinery power system according to claim 6, characterized in that, The walking system transmission mechanism (6) includes a first input gear (61) connected to the motor output shaft (41), a second input gear (62) connected to the motor output shaft (41), a first output gear (63) meshing with the first input gear (61), and a second output gear (64) meshing with the second input gear (62). The walking system input shaft (101) can rotate synchronously with the first output gear (63) or synchronously with the second output gear (64).

8. The agricultural machinery power system according to claim 6, characterized in that, The walking system (100) includes a front axle (110) and a rear axle (120); the walking system input shaft (101) is connected to the rear axle (120).

9. The agricultural machinery power system according to claim 8, characterized in that, The walking system input shaft (101) is connected to the front axle (110) via a front axle clutch (130), which is used to connect or disconnect the power transmission between the walking system input shaft (101) and the front axle (110).

10. Agricultural machinery, characterized in that, The agricultural machinery power system includes the agricultural machinery power system as described in any one of claims 1-9, and further includes a walking system (100) and a PTO system, wherein the agricultural machinery power system is used to provide power to the walking system (100) and the PTO system.

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