Uninterrupted power system of high-horsepower tractor

Abstract

The utility model discloses an uninterrupted power system of a high-horsepower tractor, which relates to the technical field of vehicle power and is mounted on a chassis frame of the tractor, a walking assembly is mounted on the chassis frame and comprises an engine, a power end of the engine is connected with an AMT (automated mechanical transmission) gearbox, an output end of the AMT gearbox is connected with a walking transfer case, and the walking transfer case is connected with the power end of the engine. The output end of the walking transfer case is connected with the walking assembly; the input end of the walking transfer case is connected with a power-assisted motor in parallel, the power-assisted motor is electrically connected with a storage battery, and the power-assisted motor is used for providing instantaneous output during gear shifting of the AMT gearbox. According to the utility model, uninterrupted power gear shifting is realized, the cost is low, and the popular use requirements are favorably met.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle power technology field especially relates to a big horsepower tractor uninterrupted power system. BACKGROUND

[0002] Tractor is used for traction and drive operation machine to complete various mobile operations, that is, the power output, a part is used for traction walking, another part is used for providing power source for operation machine. According to the operation power demand of operation machine, operation scale, soil condition etc., need to select suitable horsepower tractor for use. Among them, for big horsepower tractor, such as 280-850 horsepower tractor, mainly used in high load operation, hard soil or mountain operation and large scale operation, operation power demand is big, and corresponding operation resistance is big. When tractor needs to shift, traction walking part loses power, and big operation resistance will stop tractor, and after reengaging, very big torque is needed to realize traction walking again, and this action tractor can not realize, so mainly through the way of stopping operation machine or even lifting operation machine to reduce the resistance in the process of shifting, and smooth shifting is realized. This way is not conducive to continuous operation in the field, and the overall operation effect is poor.

[0003] Therefore, at present, the shifting technology of uninterrupted power is applied in big horsepower tractor, such as wet type multi-clutch power shifting technology, CVT stepless speed change power shifting technology and the like. These technologies realize uninterrupted power shifting, but the technology is complex, the price is expensive, and mainly depends on import, for example, the price of 500 horsepower tractor can reach 3-5 million yuan, and the later maintenance cost is also very high, so it is difficult to purchase and use in the occasion of large application scale. Under the above background, a low-cost uninterrupted power shifting technology is needed to meet the popular use demand. CONTENT OF UTILITY MODEL

[0004] The utility model solves the technical problem that a big horsepower tractor uninterrupted power system realizing uninterrupted power shifting and low cost is provided.

[0005] In order to solve the above technical problem, the technical scheme of the utility model is as follows: a big horsepower tractor uninterrupted power system is installed on the chassis frame of tractor, a walking assembly is installed on the chassis frame, including engine, the power end of the engine is connected with AMT gearbox, the output end of the AMT gearbox is connected with walking transfer case, the output end of the walking transfer case is connected with the walking assembly, the input end of the walking transfer case is connected with booster motor in parallel, the booster motor is electrically connected with storage battery, and the booster motor is used to provide instantaneous output when the AMT gearbox shifts.

[0006] As a preferred technical scheme, the chassis frame comprises a front frame and a rear frame, and the front frame is swing-connected with the proximal end of the rear frame.

[0007] As a preferred technical scheme, the walking assembly comprises a front axle assembly and a rear axle assembly installed on the chassis frame, front walking wheels are respectively installed on two sides of the front axle assembly, rear walking wheels are respectively installed on two sides of the rear axle assembly, and the output end of the walking transfer case is power-connected with the input ends of the front axle assembly and the rear axle assembly.

[0008] As a preferred technical scheme, a rear output transfer case is arranged between the power end of the engine and the AMT gearbox, the input end of the rear output transfer case is connected with the power end of the engine, the first output end of the rear output transfer case is connected with the input end of the AMT gearbox, and the second output end of the rear output transfer case is connected with a PTO mechanism.

[0009] As a preferred technical scheme, a third output end is arranged on the rear output transfer case, and the third output end is connected with a hydraulic oil pump.

[0010] As a preferred technical scheme, a generator is further connected with the output end of the rear output transfer case and the AMT gearbox.

[0011] As a preferred technical scheme, the assist motor functions as a generator.

[0012] Due to the above technical scheme, the high-power tractor uninterrupted power system is installed on the chassis frame of the tractor, the chassis frame is installed with a walking assembly, the walking assembly comprises an engine, the power end of the engine is connected with an AMT gearbox, the output end of the AMT gearbox is connected with a walking transfer case, and the output end of the walking transfer case is connected with the walking assembly; the input end of the walking transfer case is connected in parallel with an assist motor, the assist motor is electrically connected with a storage battery, and the assist motor is used for providing instantaneous output when the AMT gearbox is shifted. In normal use, the engine and the AMT gearbox are used for outputting walking power, when shifting, the clutch mechanism in the AMT gearbox is separated, the power provided by the engine is cut off, the assist motor is powered by the storage battery, and power connection is quickly completed; after the clutch mechanism in the AMT gearbox is combined, the engine restores power output, and the assist motor stops assisting, thereby realizing uninterrupted power shifting. The whole power system is simple in composition, and all the used components are conventional components. For example, the overall cost of a 500-horsepower tractor can be reduced to below 800,000 yuan, the cost is low, and the demand of mass use can be met. BRIEF DESCRIPTION OF DRAWINGS

[0013] The following drawings merely aim to schematically illustrate and explain the utility model, and do not limit the scope of the utility model. Among them:

[0014] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0015] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model;

[0016] Figure 3 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0017] In the diagram: 1-Engine; 2-Rear output transfer case; 3-Generator; 4-AMT gearbox; 5-Travel transfer case; 6-Power steering motor; 7-Battery; 8-Travel assembly; 81-Front axle assembly; 82-Rear axle assembly; 83-Front travel wheel; 84-Rear travel wheel; 9-PTO mechanism. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0019] Example 1: As Figure 1 As shown, the uninterruptible power system of a high-horsepower tractor is mounted on the tractor's chassis frame. The chassis frame serves as the carrier for the power system and other control and transmission systems, and can be either an integral structure or a swing-hinged structure; no limitation is made here. When it is a swing-hinged structure, the chassis frame includes a front frame and a rear frame, and the proximal ends of the front frame and the rear frame are swing-connected.

[0020] The chassis frame is equipped with a running gear assembly 8. Conventionally, the running gear assembly 8 includes a front axle assembly 81 and a rear axle assembly 82 mounted on the chassis frame. Front running wheels 83 are mounted on both sides of the front axle assembly 81, and rear running wheels 84 are mounted on both sides of the rear axle assembly 82.

[0021] This system includes an engine 1, the power end of which is connected to an AMT transmission 4. The AMT transmission 4 is widely used in engineering machinery such as loaders and is inexpensive. It integrates clutch and shifting functions and can be directly used with the engine 1 in this embodiment. The power connection can be achieved by using conventional coupling technology.

[0022] The output end of the AMT gearbox 4 is connected with a travel transfer case 5, and the connection can be achieved by a shaft joint or a universal joint, etc. The output end of the travel transfer case 5 is connected with the travel assembly 8, more specifically, the output end of the travel transfer case 5 is power connected with the input ends of the front axle assembly 81 and the rear axle assembly 82 respectively. For the swing hinged chassis frame of the embodiment, the output end of the travel transfer case 5 is preferably power connected with the front axle assembly 81 and the rear axle assembly 82 respectively by universal joints. The travel transfer case 5 is a component for achieving power transmission by gear transmission, chain transmission, etc., which can be easily obtained by those skilled in the art in combination with conventional transmission box technical means, and the structure is simple and the price is also low.

[0023] The power end of the engine 1 is provided with a rear output transfer case 2, the input end of the rear output transfer case 2 is connected with the power end of the engine 1, the first output end of the rear output transfer case 2 is connected with the input end of the AMT gearbox 4, and the second output end of the rear output transfer case 2 is connected with a PTO mechanism 9. The rear output transfer case 2 is a component for achieving power transmission by gear transmission, more specifically, the power input by the input end is divided into two outputs by two groups of gear transmission, one output end is used for travel power, and the other output end is used for the PTO mechanism 9. The rear output transfer case 2 is also easily obtained by those skilled in the art in combination with conventional transmission box technical means, and the structure is simple and the price is low.

[0024] Preferably, a third output end is provided on the rear output transfer case 2, and a hydraulic oil pump is connected with the third output end to provide hydraulic power for related driving oil cylinders and other hydraulic elements. Of course, the third output end is achieved by adding a group of gear transmission in the rear output transfer case 3.

[0025] The input end of the travel transfer case 5 is connected in parallel with a booster motor 6, the booster motor 6 is electrically connected with a storage battery 7, and the booster motor 6 is used to provide instantaneous output when the AMT gearbox 4 shifts. The motor is a component that can quickly form full power output depending on instantaneous current, and can quickly connect power output during shifting to achieve uninterrupted power. Among them, the booster motor 6 and the storage battery 7 are also low-priced components.

[0026] The shifting process of the embodiment is as follows.

[0027] The first stage is the pre-shifting stage. In this stage, the AMT gearbox 4 judges whether shifting is needed according to the parameters such as vehicle speed, throttle opening, load, etc., and prepares for shifting operation. The engine 1 maintains torque output. The booster motor 6 adjusts the torque output according to the shifting demand to prepare for shifting.

[0028] The second stage is the torque unloading stage. In this stage, the clutch in the AMT transmission 4 disengages, cutting off the power connection between the engine 1 and the output of the AMT transmission 4. However, since the rear output transfer case 2 still maintains a power connection with the engine 1, power output remains at the PTO mechanism 9, ensuring continuous operation of the machinery. The power assist motor 6 rapidly increases the torque output, resuming the power output from the engine 1 at the travel transfer case 5.

[0029] The third stage is the gear shifting execution stage. In this stage, the AMT transmission 4 completes the gear shift. The power assist motor 6 maintains high torque output to ensure uninterrupted vehicle power.

[0030] The fourth stage is the torque recovery stage. The clutch in the AMT transmission 4 engages, restoring the power connection between the engine 1 and the output of the AMT transmission 4. The power assist motor 6 reduces its torque output, restoring the engine 1's power drive to the rear output transfer case 2.

[0031] The aforementioned power assist motor 6 provides rapid power continuity during gear shifting, achieving uninterrupted power shifting. Furthermore, the components used in this embodiment are all common parts, resulting in low overall cost. For example, the overall cost of a 500-horsepower tractor can be reduced to below 800,000 yuan, making it suitable for mass-market applications.

[0032] Example 2: Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the assist motor 6 also functions as a generator. That is, during the non-shifting phase, the assist motor 6 can generate electricity with the help of the engine 1 to supplement the battery 7.

[0033] The gear shifting process in this embodiment is as follows.

[0034] The first stage is the pre-shift stage. In this stage, the AMT transmission 4 determines whether a shift is needed based on parameters such as vehicle speed, throttle opening, and load, and prepares for the shift operation. The engine 1 maintains torque output. The power assist motor 6 adjusts to the drive mode according to the shift requirements, preparing for the shift.

[0035] The second stage is the torque unloading stage. During this stage, the clutch in the AMT transmission 4 disengages, cutting off the power connection between the engine 1 and the output of the AMT transmission 4. Of course, at this time, the rear output transfer case 2 still maintains power output at the PTO mechanism 9. The power assist motor 6 rapidly increases torque output, resuming the power output from the engine 1 at the travel transfer case 5.

[0036] The third stage is the gear shifting execution stage. In this stage, the AMT transmission 4 completes the gear shift. The power assist motor 6 maintains high torque output to ensure uninterrupted vehicle power.

[0037] The fourth stage is the torque recovery stage. The clutch in the AMT transmission 4 engages, restoring the power connection between the engine 1 and the output of the AMT transmission 4. The power assist motor 6 reduces its torque output, restoring the engine 1's power drive to the rear output transfer case 2. Depending on the battery level of the battery 7, the power assist motor 6 may switch to generator mode to replenish the battery. In this mode, the outputs of the power assist motor 6 and the AMT transmission 4 are connected to the input shaft of the transfer case 5, allowing the power assist motor 6 to generate electricity using engine power.

[0038] By self-recharging the battery 7 as described above, the uninterrupted power supply capability of this embodiment is improved.

[0039] Example 3: Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that a generator 3 is also connected to the output terminal of the rear output transfer case 2, which connects to the AMT transmission 4. Similarly, using the power output of the engine 1, the generator replenishes the battery 7 when its charge is insufficient. Its uninterrupted power-assisted shifting process is the same as in Embodiment 1, and will not be described again here.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A system for uninterrupted power for high horsepower tractors, mounted on the chassis frame of the tractor, said chassis frame having a running assembly mounted thereon, characterized in that: The application relates to a chassis frame and a driving assembly thereof.

2. The continuous power system for a heavy duty tractor of claim 1, wherein: The chassis frame comprises a front frame and a rear frame, and the front frame is swing-connected between the rear end of the front frame and the rear frame.

3. The continuous power system for a heavy duty tractor of claim 1, wherein: The driving assembly comprises a front axle assembly and a rear axle assembly mounted on the chassis frame, two front driving wheels are mounted on the two sides of the front axle assembly respectively, two rear driving wheels are mounted on the two sides of the rear axle assembly respectively, and the output end of the driving power distribution box is power-connected with the input end of the front axle assembly and the rear axle assembly respectively.

4. The continuous power system for a heavy duty tractor of claim 1, wherein: The power end of the engine is provided with a rear output power distribution box, the input end of the rear output power distribution box is connected with the power end of the engine, the first output end of the rear output power distribution box is connected with the input end of the AMT gearbox, and the second output end of the rear output power distribution box is connected with a PTO mechanism.

5. The continuous power system for a heavy duty tractor of claim 4, wherein: The rear output power distribution box is provided with a third output end, and the third output end is connected with a hydraulic oil pump.

6. The continuous power system for a heavy duty tractor of claim 4, wherein: The output end, where the rear output power distribution box is connected with the AMT gearbox, is further connected with a generator.

7. A continuous power system for a heavy duty tractor as set forth in any one of claims 1 to 5 inclusive, wherein: The auxiliary motor functions as a generator.

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