Chassis connecting structure applied to hybrid tractor

Abstract

The utility model discloses a chassis connecting structure for application in hybrid tractor, it belongs to connecting structure technical field, and it solves the connecting problem between hybrid tractor engine and gearbox, provides installation and protection for generator and drive motor. It mainly includes engine and gearbox, and the engine is connected with the shaft coupling, is equipped with the connecting frame between the engine and the gearbox, and the connecting frame includes bottom seal board, is equipped with the curb on bottom seal board, is equipped with the connecting plate respectively on both sides of curb, one side connecting plate is fixedly connected with the engine through engine end cover, and the connecting plate of other side is connected with the gearbox through gearbox end cover, is equipped with generator and drive motor in the connecting frame, the shaft coupling is connected with the spline shaft, and the spline shaft passes through generator and drive motor and is connected with the gearbox in proper order. The utility model adopts the cage type connecting frame, connects the engine and the gearbox, and is the whole car bearing structure spare, and protects the generator and drive motor.

Description

Technical Field

[0001] This utility model relates to the field of connection structure technology, and more specifically, to a chassis connection structure applied to a hybrid tractor. Background Technology

[0002] Conventional diesel-powered tractors consist of an engine connected to a chassis comprised of a gearbox and a rear axle. The chassis bears the weight of the entire vehicle, secures the cab, fuel tank, after-treatment system, and other accessories, and transmits power to the entire vehicle. As demands for operational comfort and intelligent features in vehicles increase, more and more pure electric and hybrid tractors have emerged. In the overall design of new energy tractors, especially hybrid tractors, the independent generator and drive motor are typically housed in cast aluminum casings, and their outer surfaces contain easily damaged components such as wiring harnesses, connectors, and sensors, making them unsuitable as load-bearing structural components for the entire vehicle. Utility Model Content

[0003] The purpose of this invention is to provide a chassis connection structure for hybrid tractors, which solves the connection problem between the engine and gearbox of a hybrid tractor and provides installation and protection for the generator and drive motor.

[0004] This utility model is achieved through the following technical solution: A chassis connection structure for a hybrid tractor includes an engine and a gearbox. The engine is connected to a coupling, and a connecting frame is provided between the engine and the gearbox. The connecting frame includes a bottom sealing plate and side plates on the bottom sealing plate. Connecting plates are provided on both sides of the side plates. One connecting plate is fixedly connected to the engine through an engine end cover, and the other connecting plate is connected to the gearbox through a gearbox end cover. A generator and a drive motor are provided inside the connecting frame. The coupling is connected to a splined shaft, which passes through the generator and the drive motor in sequence and is connected to the gearbox.

[0005] Furthermore, the side plate is provided with stiffening plates, and the connecting plates on both sides of the side plate are connected by tie rods.

[0006] Furthermore, the pull rod is provided with a cover plate.

[0007] Furthermore, a dust cover is provided between the generator and the drive motor.

[0008] Furthermore, the generator engages with a coupling via a spline; the coupling engages with one end of a splined shaft via a spline; and the other end of the splined shaft engages with a gearbox via a spline.

[0009] Furthermore, the gearbox end cover and the engine end cover are respectively positioned with the connecting plate by a stop.

[0010] Furthermore, the drive motor engages with the gearbox via splines.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs a cage-type connecting frame to connect the engine and transmission, serving as a load-bearing structural component for the entire vehicle and protecting the generator and drive motor. The connecting frame features a hollow generator and drive motor, allowing the splined shaft of the PTO output after drive to pass through, saving space, optimizing the power transmission path, and improving efficiency. The connecting frame is designed with upper and lower cover plates to protect the generator and drive motor. A dustproof structure is designed between the generator and drive motor to prevent foreign objects from entering the motor shaft hole. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an internal sectional view of the present invention; Figure 3 This is a schematic diagram of the connecting frame structure of this utility model.

[0013] In the diagram: 1. Engine; 2. Coupling; 3. Splined shaft; 4. Generator; 5. Positioning bearing; 6. Dust cover; 7. Drive motor; 8. Connecting frame; 9. Gearbox end cover; 10. Gearbox; 11. Rear axle; 12. Cover plate; 13. Engine end cover; 14. Side plate; 15. Rib plate; 16. Tie rod; 17. Connecting plate; 18. Bottom sealing plate. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the creation of this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Example 1: A chassis connection structure applied to a hybrid tractor, such as... Figures 1-3As shown, the system includes an engine 1 and a gearbox 10. The flywheel of the engine 1 is connected to a coupling 2, which is a spring-torsional vibration-damping coupling 2, effectively absorbing the impact generated when the rear PTO output shaft is working. A connecting frame 8 is provided between the engine 1 and the gearbox 10. The connecting frame 8 includes a bottom sealing plate 18, which prevents foreign objects from splashing into the interior of the connecting frame 8. Side plates 14 are provided on the bottom sealing plate 18. Connecting plates 17 are provided on both sides of the side plates 14. One connecting plate 17 is fixedly connected to the engine 1 through the engine end cover 13, and the other connecting plate 17 is connected to the gearbox 10 through the gearbox end cover 9. The gearbox 10 is connected to the rear axle 11. A generator 4 and a drive motor 7 are provided inside the connecting frame 8. The coupling 2 is connected to a splined shaft 3, which passes through the generator 4 and the drive motor 7 in sequence and is connected to the gearbox 10. The connecting frame 8 itself includes a bottom sealing plate 18, side plates 14, and stiffening plates 15, forming a sturdy frame. The connecting plates 17 on both sides of the side plate 14 are further reinforced by the tie rod 16, forming a high-rigidity closed force flow path. This path can effectively withstand the vibration, torque reaction force, and impact load of the engine 1 during driving, preventing displacement or deformation between components, ensuring the stability and reliability of power transmission, and extending the equipment's lifespan. This invention organically integrates the four core power components—engine 1, generator 4, drive motor 7, and gearbox 10—into a rigid whole through a unified connecting frame structure 8. This avoids the need to design and install separate supports for each component, greatly optimizes the chassis layout, and makes the powertrain structure more compact. It also leaves more space for accommodating other components such as batteries and hydraulic systems.

[0017] Example 2: A chassis connection structure for a hybrid tractor, wherein the side plate 14 is provided with stiffening plates 15, and the connecting plates 17 on both sides of the side plate 14 are connected by tie rods 16. The tie rods 16 are provided with cover plates 12 to prevent foreign objects from falling in. A dust cover 6 is provided between the generator 4 and the drive motor 7, and a positioning bearing 5 is provided inside the dust cover 6. The dust cover 6, located between the generator 4 and the drive motor 7, effectively prevents mud and dust from entering the critical armature and bearing parts, protecting the motor from contamination.

[0018] The generator 4 engages with the coupling 2 via a spline. The spline connection has the advantages of high load-bearing capacity, good alignment, and smooth and reliable transmission. The coupling 2 engages with one end of the splined shaft 3 via a spline. The other end of the splined shaft 3 engages with the gearbox 10 via a spline. The gearbox end cover 9 and the engine end cover 13 are respectively positioned with the connecting plate 17 via a stop.

[0019] The drive motor 7 engages with the gearbox 10 via splines. The generator 4 engages with the coupling 2 via splines; the drive motor 7 engages with the gearbox 10 via splines. The coupling 2 has internal and external splines; the internal spline drives the PTO output shaft, and the external spline drives the generator 4. Everything else is the same as in Embodiment 1.

[0020] The connecting frame 8 between the engine 1 and the gearbox 10 is a rigid fixed structure, which can not only connect the engine 1 and the gearbox 10, but also protect the generator 4 and the drive motor 7. The hollow generator 4 and drive motor 7 allow the splined shaft 3 to pass through, so that the engine 1 can independently drive the generator 4, the gearbox 10 and the rear PTO output shaft respectively.

[0021] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A chassis connection structure for a hybrid tractor, comprising an engine (1) and a gearbox (10), wherein the engine (1) is connected to a coupling (2), characterized in that: A connecting frame (8) is provided between the engine (1) and the gearbox (10). The connecting frame (8) includes a bottom sealing plate (18) and a side plate (14) on the bottom sealing plate (18). A connecting plate (17) is provided on both sides of the side plate (14). One side connecting plate (17) is fixedly connected to the engine (1) through the engine end cover (13), and the other side connecting plate (17) is connected to the gearbox (10) through the gearbox end cover (9). A generator (4) and a drive motor (7) are provided inside the connecting frame (8). The coupling (2) is connected to a spline shaft (3). The spline shaft (3) passes through the generator (4) and the drive motor (7) in sequence and is connected to the gearbox (10).

2. The chassis connection structure for a hybrid tractor according to claim 1, characterized in that: The side plate (14) is provided with stiffening plates (15), and the connecting plates (17) on both sides of the side plate (14) are connected by tie rods (16).

3. The chassis connection structure for a hybrid tractor according to claim 2, characterized in that: The pull rod (16) is provided with a cover plate (12).

4. The chassis connection structure for a hybrid tractor according to claim 1, characterized in that: A dust cover (6) is provided between the generator (4) and the drive motor (7).

5. The chassis connection structure for a hybrid tractor according to claim 1, characterized in that: The generator (4) is engaged with the coupling (2) via a spline; the coupling (2) is engaged with one end of the splined shaft (3) via a spline; and the other end of the splined shaft (3) is engaged with the gearbox (10) via a spline.

6. The chassis connection structure for a hybrid tractor according to claim 1, characterized in that: The gearbox end cover (9) and engine end cover (13) are respectively positioned with the connecting plate (17) by a stop.

7. The chassis connection structure for a hybrid tractor according to claim 1, characterized in that: The drive motor (7) is engaged with the gearbox (10) via a spline.

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