A type of wheeled tractor range extender

Abstract

On the generator's power output side, the engine's power output shaft is poweredly connected to the generator's output shaft, and the engine's output shaft is poweredly connected to the PTO output shaft. The drive motor's output shaft has a hollow structure, and the PTO output shaft extends through the hollow cavity of the drive motor's output shaft. A top-mounted aftertreatment unit is installed on the top of the engine, an ECU assembly is installed on the outside of the engine, and a beam-type oil pan is installed at the bottom of the engine. The beneficial effects of this utility model are: it realizes the application of range extender in wheeled tractors, achieving a transformation in tractor drive energy; in terms of structural layout, the top-mounted aftertreatment unit, ECU assembly, and beam-type oil pan that serves as a segment of the load-bearing frame beam are integrated into the engine assembly to achieve overall modularity, reducing the number of assembly parts in the wheeled tractor and simplifying its assembly steps.

Description

Technical Field

[0001] This utility model relates to range extenders, and more particularly to a range extender mounted on a wheeled vehicle. Background Technology

[0002] With the energy crisis, increasing environmental awareness, and increasingly stringent emission regulations, traditional gasoline-powered vehicles face unresolved pollution problems, making new energy vehicles an alternative technology. Among these, range extenders, as a crucial technology for the transition from traditional gasoline-powered vehicles to zero-carbon emissions, have become increasingly popular in many automotive transportation, construction machinery, and agricultural machinery sectors. In the current process of agricultural mechanization, tractors, as essential agricultural equipment, are used extensively, and the environmental benefits of transitioning tractor power sources are substantial. Therefore, a range extender structure has been proposed for wheeled tractor models, adapting to the current transition of tractor power from traditional gasoline-powered vehicles to zero-carbon emissions.

[0003] Wheeled tractors offer two power output modes: walking and working. The motor drive mode commonly used in vehicle range extenders is insufficient to meet the long-term, high-torque working requirements of wheeled tractors. The unique operating mode of wheeled tractors requires switching between two output ports: walking and implement power (PTO). Using a single motor output would result in incomplete decoupling of the walking and PTO drives, leading to poor smoothness during operation. Therefore, a structure incorporating a wheeled tractor range extender is proposed to achieve dual output modes, effectively solving the problem of insufficient power switching from a single motor output. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wheel-mounted range extender.

[0005] The purpose of this utility model is achieved through the following technical solution: a wheel-mounted range extender includes an engine, a generator, a PTO output shaft, and a drive motor. The generator is installed on the power output side of the engine, and the drive motor is installed on the power output side of the generator. The power output shaft of the engine is poweredly connected to the generator output shaft of the generator, and the engine output shaft is poweredly connected to the PTO output shaft. The drive motor output shaft of the drive motor has a hollow structure, and the PTO output shaft extends out from the hollow cavity of the drive motor output shaft. A top-mounted aftertreatment system is provided on the top of the engine, an ECU assembly is provided on the outside of the engine, and a beam-type oil pan is provided at the bottom of the engine.

[0006] Optionally, the engine's power output end is equipped with an output spline, which is connected to the generator output shaft via a spline.

[0007] Optionally, the power output end of the generator output shaft is connected to the PTO output shaft via a splined bushing.

[0008] Optionally, the output end of the drive motor output shaft is provided with a spline.

[0009] Optionally, the engine is an electronically controlled high-pressure common rail diesel engine.

[0010] This utility model has the following advantages: The wheel-mounted range extender of this utility model realizes the application of range extension in wheel-mounted vehicles, achieving the energy transformation of tractor drive. In terms of structural layout, the top-mounted aftertreatment unit, ECU components, and beam-type oil pan that serves as a segment of the load-bearing frame beam are integrated into the engine assembly to achieve overall modularization, reducing the number of assembly parts of the wheel-mounted vehicle and simplifying its assembly steps. In terms of power output, based on the traditional gearbox distribution of travel and PTO output, a function of providing PTO auxiliary output power by the engine has been added, effectively solving the problem of uneven power switching of the drive motor and alleviating the pressure of continuous high load output of the battery in PTO mode. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 A schematic diagram showing the connection of the power output shaft of a wheeled range extender;

[0013] In the diagram, 1-engine, 2-generator, 3-drive motor, 4-spline bushing, 5-PTO output shaft, 101-top-mounted aftertreatment, 102-ECU assembly, 103-beam-type oil pan, 104-output spline, 201-generator output shaft, 301-drive motor transmission shaft. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, 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," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0020] like Figure 1 and Figure 2 As shown, a wheel-mounted range extender includes an engine, a generator 2, a PTO output shaft 5, and a drive motor 3. The generator 2 is mounted on the power output side of the engine, and the drive motor 3 is mounted on the power output side of the generator 2. The power output shaft of the engine is poweredly connected to the generator output shaft 201 of the generator 2, and the engine output shaft is poweredly connected to the PTO output shaft 5. The drive motor output shaft 301 of the drive motor 3 has a hollow structure, and the PTO output shaft 5 extends out from the hollow cavity of the drive motor output shaft 301. A top-mounted aftertreatment unit 101 is provided on the top of the engine. An ECU component 102 is installed on the outside of the engine, and a beam-type oil pan 103 is installed at the bottom of the engine. In this embodiment, the engine is an electronically controlled high-pressure common rail diesel engine. The ECU component 102 receives parameters from sensors and the transmission to regulate the engine operation, providing higher power output and achieving power optimization that matches the operating conditions of the range extender motor. In this embodiment, based on the narrow and tall characteristics of the wheel trailer compartment, the ECU component 102, the beam-type oil pan 103, and the fixed aftertreatment are installed on the engine, so that the range extender meets the requirements of the wheel trailer frame installation strength and the compartment space.

[0021] In this embodiment, as Figure 1 and Figure 2 As shown, the engine's power output end is equipped with an output spline 104, which is connected to the generator output shaft 201 via a spline. Furthermore, the power output end of the generator output shaft 201 is connected to the PTO output shaft 5 via a splined bushing 4. That is, both ends of the generator output shaft 201 have external spline structures, with one end connected to the output spline 104 and the other end installed inside the splined bushing 4. The drive motor output shaft 301 in the drive motor 3 is a hollow shaft, a single-spline output shaft. That is, the output end of the drive motor output shaft 301 is equipped with a spline, wherein the single spline of the drive motor 3... The splined output end connects to the gearbox main shaft to enable the drive motor 3 to drive the walking mode and PTO mode. The engine power is transmitted to the PTO device through the generator output shaft 201 and the PTO output shaft 5. This can supplement the PTO power to achieve a smooth and comfortable transition when there is a lag when switching between the walking and PTO modes from the gearbox. At the same time, it can reduce the power consumption in the PTO working mode and extend the battery range. The engine power is output from the engine output spline 104 and then divided into two sections: the generator output shaft 201 and the PTO output shaft 5, which shortens the length of a single shaft and facilitates transportation and packaging requirements.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device equipped with a wheeled tractor range extender, characterized in that: The system includes an engine, a generator, a PTO output shaft, and a drive motor. The generator is mounted on the power output side of the engine, and the drive motor is mounted on the power output side of the generator. The power output shaft of the engine is poweredly connected to the generator output shaft of the generator, and the engine output shaft is poweredly connected to the PTO output shaft. The drive motor output shaft of the drive motor has a hollow structure, and the PTO output shaft extends out from the hollow cavity of the drive motor output shaft. A top-mounted aftertreatment system is provided on the top of the engine, an ECU assembly is provided on the outside of the engine, and a beam-type oil pan is provided at the bottom of the engine.

2. The wheel-mounted range extender according to claim 1, characterized in that: The engine's power output end is provided with an output spline, which is connected to the generator's output shaft via a spline.

3. The wheel-mounted range extender according to claim 2, characterized in that: The power output end of the generator output shaft is connected to the PTO output shaft via a splined bushing.

4. A wheel-mounted range extender according to claim 3, characterized in that: The output end of the drive motor output shaft is provided with a spline.

5. A range extender equipped with a wheeled tractor according to any one of claims 1 to 4, characterized in that: The engine is an electronically controlled high-pressure common rail diesel engine.

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