Hybrid crawler-type power chassis transmission structure

Abstract

The utility model discloses a hybrid crawler-type power chassis transmission structure which comprises a fuel engine, a clutch, a generator and a power output assembly which are sequentially connected, a battery pack is connected with the generator, a clutch shaft of the clutch penetrates through the generator to be connected with the power output assembly, and the power output assembly is connected with the power output assembly. Meanwhile, power is input to the generator and the power output assembly. The electric vehicle is simple and compact in structure, light in weight and lower in cost, fuel economy is improved, more energy is saved, intelligent control can be achieved conveniently, and the endurance problem is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power chassis, and in particular to a hybrid crawler-type power chassis transmission structure. Background Art

[0002] The current tractor power chassis transmission structure mainly includes the engine, gearbox, front and rear axle components, etc. The transmission mechanism in the gearbox mainly adopts gear transmission. The power of the engine needs to be input to the PTO and travel system respectively through a complex gear transmission mechanism, resulting in a complex power chassis structure, large size, heavy weight, and high cost.

[0003] Therefore, many units are currently developing hybrid transmission systems. For example, my country's patent CN114571992A discloses a diesel-electric hybrid transmission for tractors, including a diesel engine, a generator and an electric motor, and is also provided with a front axle drive shaft connected to the front axle, a rear axle drive shaft connected to the rear axle, a PTO drive shaft connected to the PTO assembly, and a four-wheel drive drive shaft; the diesel engine drive shaft is connected to the generator, the generator can store electrical energy in a battery pack, the battery pack can power the electric motor, the electric motor can drive the rear axle in high and low gears, the rear axle drive shaft can drive the four-wheel drive shaft, the four-wheel drive shaft can drive the front axle drive shaft through the four-wheel drive system clutch and spline sleeve, so that the electric motor can drive the front and rear axles at the same time, and the diesel engine drives the PTO assembly through the PTO drive shaft, realizing the diesel-electric hybrid drive of the tractor, achieving the purpose of energy conservation and emission reduction, greatly improving the economy of the tractor, having the advantages of stepless speed change and precise control, greatly improving the operating comfort and power, and having huge advantages in tractor noise control and other aspects.

[0004] However, in this existing technology, the generator and the motor are placed outside the gearbox, and the motor drives the travel system through a complex gear transmission structure, and the gear transmission structure is still integrated into the gearbox. The power of the travel system is only separated by the generator and the motor, and the volume, weight and structural complexity of the gearbox are not effectively reduced. The compact structure of the whole machine is difficult to meet market demand. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a hybrid crawler power chassis transmission structure to solve the problems of the prior art using traditional gearboxes, such as complex transmission structure, large volume and weight, and high cost.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a hybrid crawler power chassis transmission structure, including a fuel engine, a clutch, a generator, and a power output assembly connected in sequence, wherein the clutch shaft of the clutch passes through the generator and is connected to the power output assembly, and simultaneously inputs power to the generator and the power output assembly.

[0007] As an optimization, the generator includes a stator assembly and a rotor assembly that cooperate with each other, and the rotor assembly is coaxially mounted on the clutch shaft.

[0008] As an optimization, the generator is accommodated in a support housing, and the support housing is made integrally with the clutch housing.

[0009] As an optimization, the power output assembly includes a power output driving shaft and a power output shaft, and the power output driving shaft is coaxially connected to the clutch shaft.

[0010] As an optimization, it also includes a rear axle housing, which is connected to the support housing. The power output assembly is installed in the rear axle housing, and one end of the power output shaft extends out of the rear axle housing.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The utility model builds the generator into the clutch housing and is coaxially arranged with the clutch shaft and the power output driving shaft. Through the fuel engine, clutch, generator and power output assembly connected in sequence, the clutch shaft directly inputs power to the generator and the power output assembly. A complex gear transmission structure is no longer required, and the traditional gearbox structure is completely abandoned, which greatly simplifies the chassis structure, makes the structure more compact and lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the transmission principle of the utility model;

[0015] In the figure: 1. Clutch housing 2. Front support housing 3. Fan 4. Clutch shaft 5. Stator assembly 6. Rotor assembly 7. Rear support housing 8. Rear axle housing 9. Spline sleeve 10. Power take-off driving shaft 11. Power take-off driving gear 12. Power take-off shaft 13. Engaging sleeve 14. Engaging seat 15. Power take-off driven gear 16. Reduction transmission assembly 17. Right travel half-shaft 18. Left travel half-shaft 19 - Power take-off assembly. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0018] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] Embodiment: see Figure 1-Figure 2A hybrid crawler-type power chassis transmission structure includes a fuel engine, a generator, and a power output assembly 19 connected in sequence. The clutch shaft 4 of the clutch passes through the generator and is connected to the power output assembly 19, simultaneously inputting power to the generator and the power output assembly 19. Specifically, the generator includes a cooperating stator assembly 5 and rotor assembly 6, which is coaxially mounted on the clutch shaft 4. In this embodiment, the clutch's driving shaft is drivingly connected to the fuel engine's output shaft, while its driven shaft, the clutch shaft 4 (equivalent to the I shaft of a traditional tractor), passes directly through the generator and is connected to the power output assembly 19 via a spline sleeve 9. The clutch can control the on / off of power transmission, resulting in a simpler and more compact structure. Furthermore, the clutch shaft 4, as an integral component of the generator, facilitates positioning and assembly with other generator components.

[0020] In the present invention, the fuel engine, the generator and the power output assembly 19 are connected in sequence, and the clutch shaft 4 directly inputs power to the generator and the power output assembly 19. A complex gear transmission structure is no longer required, and the traditional gearbox structure is completely abandoned, which greatly simplifies the chassis structure, makes the structure more compact, lighter, and easier to assemble.

[0021] In addition, the utility model further comprises a battery pack, an electric motor and a travel assembly which are connected in sequence, and the battery pack is connected to a generator, and the battery pack inputs power to the travel assembly through the electric motor.

[0022] Specifically, the generator is housed within a support housing integrally formed with the clutch housing 1. The support housing can be formed by extending the clutch housing 1 away from the fuel engine, and has a mounting cavity within it. The generator has a front support housing 2 and a rear support housing 7 at each end to secure the generator within the support housing. A stator assembly 5 is disposed between the front and rear support housings 2 and 7, and a rotor assembly 6 on the clutch shaft 4 cooperates with the stator assembly 5 to generate electricity. Furthermore, a fan 3 is provided on the clutch shaft 4. Heat dissipation holes are provided on the side of the front support housing 2 near the clutch to ensure heat dissipation from the generator. Heat dissipation holes can also be provided on the clutch housing to ensure timely heat dissipation.

[0023] The power output assembly 19 includes a power output driving shaft 10 and a power output shaft 12. The power output driving shaft 10 is coaxially connected to the clutch shaft 4. In this embodiment, a rear axle housing 8 is also included for connecting the travel assembly. The rear axle housing 8 is connected to the support housing. The power output assembly 19 is installed in the rear axle housing 8, and one end of the power output shaft 12 extends out of the rear axle housing 8. Specifically, the clutch shaft 4 is coaxially connected to the power output driving shaft 10 located in the rear axle housing 8 through a spline sleeve 9, and a plurality of power output driving gears 11 are provided on the power output driving shaft 10. The power output shaft 12 is parallel to the power output driving shaft 10, and a plurality of power output driven gears 15 meshing with the power output driving gears 11 are provided on the power output shaft 12. An engagement seat 14 and an engagement sleeve 13 are also provided on the power output shaft 12 to achieve gear switching.

[0024] In addition, the utility model provides power to the traveling assembly through the generator and the electric motor, and the power is directly input to the power output assembly 19 through the clutch shaft 4, thereby separating the traveling and the power output assembly 19 (PTO), improving fuel economy, being more energy-efficient, and facilitating intelligent control, and effectively solving the endurance problem.

[0025] Specifically, the travel assembly includes two left and right reduction transmission assemblies 16, which are respectively connected to the left and right travel axles 18 and 17. Two corresponding motors are provided, each connected to the two reduction transmission assemblies 16. This allows the left and right travel assemblies to be controlled independently by the motors, facilitating adjustment and intelligent control, enabling flexible steering control. Furthermore, the motor technology is mature, the control system is simple, easy to adjust, and low-cost, significantly reducing the overall cost of the machine.

[0026] In addition, a power management system is included. Specifically, the power management system includes functional modules such as rectification, voltage monitoring and conversion, battery charging and discharging, and overload and overheat protection. The generator is an excitation generator. By switching the excitation current in the rotor or stator assembly 5, the generator's power generation state can be conveniently controlled. The specific principles of the excitation generator, the required excitation components, and the implementation of the various functions of the power management system are all existing technologies and will not be described in detail. The power management system is connected to the battery pack and the generator. When the power management system detects that the battery pack voltage exceeds a set value, it can control the generator's excitation signal to control whether the generator generates electricity.

[0027] Specifically, the power management system controls whether the generator generates electricity based on the battery pack voltage: when the battery pack voltage is lower than the set lower limit, the generator generates electricity to charge the battery pack; when the battery pack voltage reaches the set upper limit, the generator stops generating electricity and the generator rotor assembly rotates at no load, saving fuel consumption, greatly improving fuel economy and endurance, and being more energy-efficient.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hybrid crawler-type power chassis transmission structure, characterized by: It includes a fuel engine, a clutch, a generator, and a power output assembly connected in sequence, wherein the clutch shaft of the clutch passes through the generator and is connected to the power output assembly, and simultaneously inputs power to the generator and the power output assembly.

2. The hybrid crawler-type power chassis transmission structure according to claim 1, characterized in that: The generator includes a cooperating stator assembly and a rotor assembly, wherein the rotor assembly is coaxially mounted on a clutch shaft.

3. A hybrid crawler-type power chassis transmission structure according to claim 1 or 2, characterized in that: The generator is accommodated in a supporting housing, and the supporting housing is integrally formed with a clutch housing.

4. The hybrid crawler-type power chassis transmission structure according to claim 3, characterized in that: The power output assembly includes a power output driving shaft and a power output shaft, and the power output driving shaft is coaxially connected to the clutch shaft.

5. The hybrid crawler-type power chassis transmission structure according to claim 3, characterized in that: It also includes a rear axle housing, which is connected to the support housing. The power output assembly is installed in the rear axle housing, and one end of the power output shaft extends out of the rear axle housing.

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