Multifunctional wheeled tractor chassis structure and tractor

Abstract

The utility model relates to a kind of multifunctional wheeled tractor chassis structure and tractor, wherein, a kind of multifunctional wheeled tractor chassis structure, including front bracket and the rear bracket of fixed connection in the front end of the front bracket, the rear end side of the front bracket is reserved for the first installation interface of connecting front suspension device, the both sides of the rear bracket are reserved for the second installation interface of hanging connection middle-set mower and the third installation interface of the loader for hanging connection.The utility model can realize the demand of multiple function operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a multi-functional wheeled tractor chassis structure and tractor. Background Technology

[0002] Currently, domestic pure electric tractors are mainly used for basic farmland management operations, with relatively limited functionality, failing to meet the diverse operational needs of agricultural production and engineering projects. Complex functions such as front loading, rear excavation, front suspension, front PTO (compatible with various implements such as front-mounted lawnmowers, sweepers, bulldozers, and snowplows), and mid-mounted PTO (compatible with mid-mounted lawnmowers) still require specialized engineering machinery. Here, PTO refers to the power take-off shaft.

[0003] Traditional pure electric tractors and pure electric construction machinery can typically only perform one specific type or aspect of function, resulting in low equipment utilization and poor functional expandability. This not only increases users' equipment purchase and maintenance costs but also wastes resources. This limited functionality severely restricts the development of agricultural machinery towards high efficiency and intensification.

[0004] It is evident that the market currently lacks segmented, multi-functional pure electric tractors that integrate multiple operational functions. To fill this market gap and promote the diversified and intensive development of agricultural electric equipment, there is an urgent need to develop a new type of pure electric tractor with multiple operational functions. Utility Model Content

[0005] This utility model provides a multi-functional wheeled tractor chassis structure and tractor, which can meet various functional operation requirements.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides a multi-functional wheeled tractor chassis structure, including a front bracket and a rear bracket fixedly connected to one end of the front bracket. The other end of the front bracket has a first mounting interface for connecting a front suspension device. Both sides of the rear bracket have a second mounting interface for attaching a center-mounted lawnmower and a third mounting interface for attaching a loader. The second mounting interface is a front mounting point. The other end of the rear bracket is fixedly connected to a frame. The frame is provided with a center mounting point and a rear mounting point for attaching a center-mounted lawnmower. The center mounting point is located between the front mounting point and the rear mounting point.

[0007] The beneficial effects of this utility model are: by adopting this tractor chassis, a front suspension device can be mounted on its first mounting interface, a mid-mounted lawnmower can be mounted on its second mounting interface, and a loader can be mounted on its third mounting interface, thus achieving multi-functional operation. Furthermore, as a user, the front suspension device can be matched with various front-mounted implements such as lawnmowers, sweepers, bulldozers, and snowplows.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a PTO motor is fixedly connected to the frame, and the PTO motor is driven by a hydraulic power take-off box located on the rear bracket. The hydraulic power take-off box is driven by a front PTO power input shaft rotatably connected to the rear bracket. The front PTO power input shaft is driven by a front PTO housing mounted on the rear bracket. The front PTO housing is used to drive the front suspension device.

[0010] Furthermore, a hydraulic dual pump is fixedly connected to the rear bracket, and the hydraulic power take-off box is drivenly connected to the hydraulic dual pump. The hydraulic dual pump is used to connect to the vehicle's hydraulic system.

[0011] Furthermore, a hydraulic power take-off (PTO) cooling pump is fixedly connected to the rear bracket, and the hydraulic PTO cooling pump is used to dissipate heat from the hydraulic PTO.

[0012] Furthermore, the PTO motor is connected to a centrally mounted PTO drive shaft, which is used to drive the centrally mounted lawnmower.

[0013] Furthermore, a travel motor is fixedly connected to the frame, and a rear axle is fixedly connected to the end of the motor away from the rear bracket. The travel motor is driven to the rear axle, and a rear PTO clutch is driven to the rear axle. The rear PTO clutch is driven to a rear power output shaft for driving the rear-mounted equipment.

[0014] Furthermore, the rear axle is equipped with a brake, the brake is fitted with a half-shaft, and the half-shaft is used to drive the rear wheel; the travel motor is also driven by a transfer case, the transfer case is driven by a four-wheel drive shaft, the four-wheel drive shaft is driven by a front drive axle, and the front drive axle is used to drive the front wheel.

[0015] Furthermore, the PTO motor and the travel motor are connected front and rear and located in the middle of the vehicle frame.

[0016] This utility model also provides a tractor, including the aforementioned multi-functional wheeled tractor chassis structure. Attached Figure Description

[0017] Figure 1This is a structural diagram of the tractor chassis structure of this utility model; Figure 2 For the present utility model Figure 1 A magnified view of the local structure; Figure 3 This is a partial structural diagram of the tractor of this utility model; Figure 4 This is a bottom view of the tractor chassis structure of this utility model; Figure 5 This is a diagram showing the state of the tractor chassis structure of this utility model with a centrally mounted lawnmower attached. Figure 6 This is a diagram showing the state of the tractor chassis structure with the front suspension device attached to the present invention. Figure 7 This is a diagram showing the state of the tractor chassis structure of this utility model being attached to a loader.

[0018] The attached diagram lists the components represented by each number as follows: 1. Front suspension device; 11. Mid-mounted lawnmower; 12. Loader; 2. Front bracket; 3. Rear bracket; 31. Second mounting interface; 32. Third mounting interface; 4. Chassis; 41. Mid-mounted mounting point; 42. Rear mounting point; 43. Gantry; 431. PTO motor controller; 432. Travel motor controller; 44. Motor cooling water pump; 45. Heat exchanger; 46. Battery cooling water pump; 5. PTO motor; 51. Hydraulic power take-off box; 52. Front PTO power input shaft; 53. Front PTO housing; 54. Hydraulic dual pump; 55. Hydraulic power take-off box cooling pump; 56. Centrally mounted PTO drive shaft; 6. Travel motor; 61. Rear axle; 62. Rear PTO clutch; 63. Rear power output shaft; 64. Brake; 65. Half shaft; 66. Transfer case; 67. Four-wheel drive shaft; 68. Front drive axle; 7. Power battery. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] Example 1 like Figures 1-7 This utility model provides a multi-functional wheeled tractor chassis structure, including a front bracket 2 and a rear bracket 3 fixedly connected to one end of the front bracket 2. The other end of the front bracket 2 has a first mounting interface for connecting the front suspension device 1. Both sides of the rear bracket 3 have a second mounting interface 31 for attaching a centrally mounted lawnmower 11 and a third mounting interface 32 for attaching a loader 12.

[0021] The beneficial effects of this embodiment are: by adopting this tractor chassis, a front suspension device 1 can be mounted on its first mounting interface, a mid-mounted lawnmower 11 can be mounted on its second mounting interface 31, and a loader 12 can be mounted on its third mounting interface 32, thus achieving multi-functional operation. Furthermore, as a user, the front suspension device 1 can be matched with various front-mounted implements such as front-mounted lawnmowers, sweepers, bulldozers, and snowplows.

[0022] The second mounting interface 31 is a front mounting point; the rear bracket 3, away from the front bracket 2, is fixedly connected to a frame 4. The frame 4 is equipped with a central mounting point 41 and a rear mounting point 42 for mounting the centrally mounted lawnmower 11. The central mounting point 41 is located between the front mounting point and the rear mounting point 42. Stable mounting of the centrally mounted lawnmower 11 can be achieved through the second mounting interface 31, the central mounting point 41, and the rear mounting point 42.

[0023] like Figure 1 and Figure 2 A PTO motor 5 is fixedly connected to the frame 4. The PTO motor 5 is driven by a hydraulic power take-off box 51 located on the rear bracket 3. The hydraulic power take-off box 51 is driven by a front PTO power input shaft 52 rotatably connected to the rear bracket 3. The front PTO power input shaft 52 is driven by a front PTO housing 53 installed on the rear bracket 3. The front PTO housing 53 is used to drive the front suspension device 1.

[0024] By using the PTO motor 5 as a power source to drive the hydraulic power take-off box 51, and then through the transmission of the front PTO power input shaft 52 and the front PTO box 53, the front suspension device 1 is driven, and the relevant connecting parts are driven by the transmission of the front suspension device 1.

[0025] A hydraulic dual pump 54 is fixedly connected to the rear bracket 3. The hydraulic power take-off box 51 is driven to the hydraulic dual pump 54. The hydraulic dual pump 54 is used to connect to the vehicle's hydraulic system.

[0026] The hydraulic dual pump 54 is directly fixed to the rear bracket 3 and driven directly by the hydraulic power take-off box 51, forming a high-efficiency hydraulic power source integrated within the chassis structure. This avoids the complex installation structure and additional space occupation required by an external hydraulic pump. During operation, the hydraulic dual pump 54 serves as the total power source for the vehicle's hydraulic system, providing stable and reliable hydraulic power. It provides a unified power foundation for the lifting and lowering of the front suspension, the tilting and lowering of the front loading mechanism, the movement of the rear excavator, and the operation of other optional hydraulic implements. This is a key guarantee for achieving the integrated "one machine, multiple uses" function. Other optional hydraulic implements commonly include bulldozer blades or snowplows.

[0027] A hydraulic power take-off box cooling pump 55 is fixedly connected to the rear bracket 3. The hydraulic power take-off box cooling pump 55 is used to cool the hydraulic power take-off box 51.

[0028] As a power distribution hub, the hydraulic power take-off box 51 generates a lot of heat due to gear meshing and bearing friction under continuous high torque and high speed conditions. By setting up a hydraulic power take-off box cooling pump 55 to force cooling it, the hydraulic power take-off box 51 can effectively prevent failures such as decreased lubricating oil viscosity, abnormal wear of parts, or even jamming caused by overheating. This ensures the continuous operation capability and reliability of the entire front-end power output system under heavy load conditions.

[0029] like Figure 4 and Figure 6 The PTO motor 5 is connected to a centrally mounted PTO drive shaft 56, which is used to drive the centrally mounted lawnmower 11.

[0030] The PTO motor 5 is directly connected to the centrally mounted PTO drive shaft 56, providing a stable and continuous power input to the centrally mounted lawnmower 11, ensuring the high efficiency and reliability of its central operation.

[0031] like Figures 1-7 A travel motor 6 is fixedly connected to the frame 4, and a rear axle 61 is fixedly connected to the end of the frame 4 away from the rear bracket 3. The travel motor 6 is driven to the rear axle 61, and the rear axle 61 is driven to the rear PTO clutch 62. The rear PTO clutch 62 is driven to the rear power output shaft 63 for driving the rear-mounted equipment.

[0032] The rear axle 61 transmits power to the rear PTO clutch 62, and finally outputs it to the rear-mounted equipment via the rear power take-off shaft 63. This successfully integrates an independent rear-mounted power output function onto a single electric chassis, significantly expanding the machine's operating range and enabling coordinated operation of traction drive and rear-mounted implement power output. This strongly supports the development needs of intensive and multi-functional agricultural machinery. By fixing the travel motor 6 to the frame 4 and directly connecting it to the rear axle 61, efficient integrated power transmission between the drive system and the axle is achieved, ensuring the vehicle's stability and strong traction. Specifically, the rear-mounted equipment can be an excavator.

[0033] The rear axle 61 is equipped with a brake 64, which is fitted with a half shaft 65. The half shaft 65 is used to drive the rear wheels. The travel motor 6 is also driven by a transfer case 66, which is driven by a four-wheel drive shaft 67. The four-wheel drive shaft 67 is driven by a front drive axle 68, which is used to drive the front wheels.

[0034] By configuring brakes 64 and half-shafts 65 on the rear axle 61, reliable power transmission and precise braking control of the rear wheels are achieved, ensuring the basic drive and safe parking capabilities of the entire vehicle. At the same time, the transfer case 66 is driven by the travel motor 6, and the power is efficiently transmitted to the front drive axle 68 via the four-wheel drive shaft 67, thus constructing a complete four-wheel drive system. This enhances the tractor's passability and traction efficiency in complex working conditions such as mud and slopes, enabling it to handle both traditional farmland operations and engineering tasks in harsh environments. This fully demonstrates the rationality of the overall power distribution and the multi-functional adaptability of the machine.

[0035] like Figure 1 and Figure 2 The PTO motor 5 and the travel motor 6 are connected front and rear and located in the middle of the frame 4.

[0036] By adopting a compact layout with the travel motor 6 and PTO motor 5 connected front and rear and centrally located in the middle of the frame 4, a high degree of integration of the power system and optimization of the center of gravity are achieved, saving chassis space and creating favorable conditions for the placement of the front and rear axles and various work implements. Furthermore, the centralized mass distribution effectively improves the vehicle's driving stability and handling, while making the load distribution between the front and rear axles more reasonable, fully leveraging the traction efficiency of four-wheel drive. In addition, the central arrangement of PTO motor 5 and travel motor 6 shortens the power transmission path and reduces mechanical transmission losses, laying a solid structural foundation for the machine to achieve high-efficiency and multi-functional operation.

[0037] Example 2 This utility model provides a tractor in embodiment two, which includes a multi-functional wheeled tractor chassis structure as described in embodiment one.

[0038] like Figures 1-7 A power battery 7 is fixedly connected to the rear bracket 3 to provide power to the tractor. The power battery 7 is equipped with a main power switch and a high-voltage distribution box. A gantry frame 43 is fixedly connected to the frame 4. A PTO motor controller 431 and a travel motor controller 432 are fixedly connected to the gantry frame 43 to control the PTO motor 5 through the PTO motor controller 431 and to control the travel motor 6 through the travel motor controller 432.

[0039] A motor cooling water pump 44, a heat exchanger 45, and a battery cooling water pump 46 are fixedly connected below the rear bracket 3. The motor cooling water pump 44 is connected to the heat exchanger 45 through a pipeline to form a motor cooling circuit for circulating cooling of the PTO motor 5 and the travel motor 6. The battery cooling water pump 46 is connected to the heat exchanger 45 through a pipeline to form a battery cooling circuit for circulating cooling of the power battery 7.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-functional wheeled tractor chassis structure, characterized in that, The device includes a front bracket (2) and a rear bracket (3) fixedly connected to one end of the front bracket (2). The other side of the front bracket (2) has a first mounting interface for connecting the front suspension device (1). The rear bracket (3) has a second mounting interface (31) for attaching a central lawnmower (11) and a third mounting interface (32) for attaching a loader (12) on both sides. The second mounting interface (31) is a front mounting point. The other end of the rear bracket (3) is fixedly connected to a frame (4). The frame (4) is provided with a central mounting point (41) and a rear mounting point (42) for attaching the central lawnmower (11). The central mounting point (41) is located between the front mounting point and the rear mounting point (42).

2. The multi-functional wheeled tractor chassis structure according to claim 1, characterized in that, A PTO motor (5) is fixedly connected to the frame (4). The PTO motor (5) is driven by a hydraulic power take-off box (51) located on the rear bracket (3). The hydraulic power take-off box (51) is driven by a front PTO power input shaft (52) rotatably connected to the rear bracket (3). The front PTO power input shaft (52) is driven by a front PTO housing (53) installed on the rear bracket (3). The front PTO housing (53) is used to drive the front suspension device (1).

3. The multi-functional wheeled tractor chassis structure according to claim 2, characterized in that, A hydraulic dual pump (54) is fixedly connected to the rear bracket (3), and the hydraulic power take-off box (51) is driven to the hydraulic dual pump (54). The hydraulic dual pump (54) is used to connect to the vehicle's hydraulic system.

4. The multi-functional wheeled tractor chassis structure according to claim 2, characterized in that, A hydraulic power take-off box cooling pump (55) is fixedly connected to the rear bracket (3), and the hydraulic power take-off box cooling pump (55) is used to dissipate heat from the hydraulic power take-off box (51).

5. The multi-functional wheeled tractor chassis structure according to claim 2, characterized in that, The PTO motor (5) is connected to a central PTO drive shaft (56), which is used to drive the central lawnmower (11).

6. The multi-functional wheeled tractor chassis structure according to claim 2, characterized in that, A walking motor (6) is fixedly connected to the frame (4), and a rear axle (61) is fixedly connected to the end of the frame (4) away from the rear bracket (3). The walking motor (6) is driven to the rear axle (61), and the rear axle (61) is driven to the rear PTO clutch (62). The rear PTO clutch (62) is driven to the rear power output shaft (63) for driving the rear-mounted equipment.

7. The multi-functional wheeled tractor chassis structure according to claim 6, characterized in that, The rear axle (61) is equipped with a brake (64), the brake (64) is fitted with a half shaft (65), the half shaft (65) is used to drive the rear wheel; the travel motor (6) is also driven to a transfer case (66), the transfer case (66) is driven to a four-wheel drive shaft (67), the four-wheel drive shaft (67) is driven to a front drive axle (68), the front drive axle (68) is used to drive the front wheel.

8. The multi-functional wheeled tractor chassis structure according to claim 6, characterized in that, The PTO motor (5) and the walking motor (6) are connected front to back and located in the middle of the frame (4).

9. A tractor, characterized in that, Includes a multi-functional wheeled tractor chassis structure as described in any one of claims 1-8.

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