A heavy-duty tractor and a frame thereof

Abstract

The utility model discloses a kind of high horse-power tractor and its frame, belong to tractor frame form technical field.The high horse-power tractor frame is the variable cross-section half-frame type frame of cross section area change of longitudinal beam along tractor length direction, including the front bracket, middle girder and rear girder connected in turn;The mounting point of heat dissipation system assembly, counterweight connecting frame, front axle, engine, gearbox and crossbeam is equipped on the frame;The thickness and / or height of stress concentration section is increased in mounting point along tractor length direction in longitudinal beam, and the thickness and / or height of non-stress concentration section is reduced.The high horse-power tractor frame provided by the utility model distributes material as needed, thickens and heightens stress concentration area, reduces material in non-concentration area, both guarantee the strength and rigidity of frame itself, and also reduce the weight of frame;Meanwhile, the problem of beamless frame maintenance complex, whole vehicle vibration influence service life and beam frame type frame heavy, high gravity unstable is solved.

Description

Technical Field

[0001] This utility model relates to a high-horsepower tractor and its frame, belonging to the technical field of tractor frame types. Background Technology

[0002] my country has been a major agricultural country since ancient times. Agriculture is not only a major pillar of the national economy but also its economic lifeline. Tractors, as the basic vehicle in agricultural equipment, undertake the vast majority of traction and driving work. As agricultural planting gradually shifts from individual to collective farming, small and low-end tractors with lower technological content are increasingly unable to meet the requirements, leading to a growing demand for large tractors.

[0003] The tractor frame is the most basic and core component, equivalent to the "skeleton" of the human body, upon which all other systems are mounted. Currently, most high-horsepower tractors in China use a beamless frame. This type of frame has extremely stringent requirements for manufacturing processes and materials. The connection surfaces and bolt holes of each component require extremely high machining precision. Any error will generate stress after assembly, affecting the overall rigidity and lifespan. Furthermore, for high-horsepower tractors with heavy loads and traction, the gearbox also serves as the frame. Under certain harsh working conditions, the enormous impact force can damage the gearbox or rear axle housing, resulting in very high repair costs, and may even lead to the scrapping of the entire machine. In addition, the entire structure is a single unit, making it difficult to develop derivative models with different wheelbases or configurations. The mainstream frame for high-horsepower tractors abroad is a beam-type frame. This type is bulky, has a high center of gravity, and poor stability, affecting stability during driving and operation, especially on slopes, where the risk of rollover is relatively high. At the same time, the beam-type frame occupies a large space, resulting in a loose overall structure and a less compact component arrangement. The constant cross-section half-frame frame cannot simultaneously meet the requirements of high material strength and lightweight frame, and has been gradually phased out. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a high-horsepower tractor and its frame, which can allocate materials as needed, increase the thickness and height of stress concentration parts of the frame, save materials in non-critical parts, and achieve lightweighting of the tractor.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: In one aspect, a high-horsepower tractor frame is provided, wherein the high-horsepower tractor frame is a variable cross-section semi-frame with longitudinal beams whose cross-sectional area varies along the length of the tractor, and is composed of a front bracket, a middle beam and a rear beam connected in sequence. The frame is equipped with mounting points for the cooling system assembly, counterweight connection frame, engine, front axle, gearbox and crossbeam; The longitudinal beam is thickened and / or heightened in stress concentration sections along the tractor length direction, and its thickness and / or height is reduced in non-stress concentration sections.

[0006] The solution provided by this utility model adopts a semi-frame structure with strong impact resistance, low production cost, and convenient maintenance. It can also change the length of the rear beam to produce derivative models. It lowers the center of gravity of the frame and improves stability. At the same time, the variable cross-section frame increases the cross-sectional material in the critical areas of stress concentration, increases the thickness and / or height to improve strength and rigidity, and saves material in non-critical areas, thus achieving lightweight frame.

[0007] In some embodiments, a cooling system assembly is mounted on the front bracket, the cooling system assembly including an intercooler, an oil radiator, and a water radiator.

[0008] In some embodiments, a counterweight connecting frame is also installed at the front end of the front bracket for assembling the front counterweight.

[0009] In some embodiments, a front axle is mounted below the central beam to provide driving force.

[0010] In this embodiment, the thickness of the front axle mounting area of ​​the central beam is increased to precisely enhance the stiffness and strength of the central beam at the point of highest stress, thereby extending the service life of the frame.

[0011] In some embodiments, the engine is connected above the central beam via a shock-absorbing pad to lower the engine's center of gravity and reduce the impact of engine vibration.

[0012] The engine vibration is partially absorbed by the frame and partially by the damping pads, which not only alleviates the impact of vibration on the frame but also reduces the impact of vibration on the gearbox.

[0013] In some embodiments, the rear beam includes a left beam and a right beam, and a gearbox is installed between the left beam and the right beam.

[0014] In some embodiments, crossbeams are installed on the left and right main beams for mounting the driver's cab.

[0015] In some embodiments, the gearbox is connected to the engine via a driveshaft. Using a driveshaft instead of high-precision threaded holes and connecting surfaces allows the engine and gearbox to be relatively independent, minimizing mutual interference, extending overall service life, reducing costs, and facilitating maintenance.

[0016] In a second aspect, a high-horsepower tractor is provided, including the high-horsepower tractor frame described in the first aspect.

[0017] Beneficial effects: The high-horsepower tractor and its frame provided by this utility model have the following advantages: 1. The high-horsepower tractor and its frame provided by this utility model adopts a variable cross-section semi-frame frame, which increases the cross-sectional material in the key areas of stress concentration, increases the thickness and height to improve strength and rigidity, and has strong impact resistance; it also saves materials in non-critical areas, resulting in low production costs and lightweight frame. 2. The semi-frame structure facilitates maintenance and allows for the modification of the rear beam length to create derivative models; at the same time, it lowers the frame's center of gravity, improving stability. Attached Figure Description

[0018] Figure 1 This is a side view of the high-horsepower tractor frame structure of this utility model; Figure 2 This is a schematic diagram of the main structure of the high-horsepower tractor frame of this utility model; Figure 3 This is a top view of the frame structure of the high-horsepower tractor of this utility model; Figure 4 This is a side view of the high-horsepower tractor frame and mounting accessories of this utility model; Figure 5 This is a schematic diagram of the main structure of the high-horsepower tractor frame and mounting accessories of this utility model. Figure 6 This is a top view of the high-horsepower tractor frame and mounting accessories of this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Front bracket; 2. Middle beam; 3. Rear beam; 31. Left beam; 32. Right beam; 4. Cooling system assembly; 5. Counterweight connecting frame; 6. Engine; 7. Front axle; 8. Gearbox; 9. Crossbeam; 10. Drive shaft. Detailed Implementation

[0020] The technical solutions 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, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. 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.

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, a high-horsepower tractor frame is provided. The high-horsepower tractor frame is a variable cross-section semi-frame frame with longitudinal beams whose cross-sectional area changes along the length of the tractor. It includes a front bracket 1, a middle beam 2 and a rear beam 3 connected in sequence. The frame is provided with mounting points for the cooling system assembly 4, the counterweight connecting frame 5, the front axle 7, the engine 6, the gearbox 8, and the crossbeam 9. The longitudinal beam is thickened and / or heightened in stress concentration sections along the tractor length direction, and its thickness and / or height is reduced in non-stress concentration sections.

[0026] The solution provided by this utility model adopts a semi-frame structure with strong impact resistance, low production cost, and convenient maintenance. It can also change the length of the rear beam 3 to launch derivative models. It lowers the center of gravity of the frame and improves stability. At the same time, the variable cross-section frame increases the cross-sectional material in the critical areas of stress concentration, increases the thickness and / or height to improve strength and rigidity, and saves material in non-critical areas, thus achieving lightweight frame.

[0027] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, a cooling system assembly 4 is mounted on the front bracket 1, the cooling system assembly 4 including an intercooler, an oil radiator and a water radiator.

[0028] In some embodiments, a counterweight connecting frame 5 is also installed at the front end of the front bracket 1 for mounting a front counterweight. Different counterweight connecting frames 5 can be installed on the front bracket 1 to mount different front counterweights. Furthermore, appropriately reducing the thickness of non-stress concentration areas of the front bracket 1 can increase the tire steering angle.

[0029] In some embodiments, a front axle 7 is installed below the central beam 2 to provide driving force.

[0030] In this embodiment, the thickness of the front axle 7 mounting location of the central beam 2 is increased to precisely enhance the stiffness and strength of the central beam 2 at the point of highest stress, thereby extending the service life of the frame.

[0031] In some embodiments, the engine 6 is connected above the central beam 2 via a shock-absorbing pad to lower the center of gravity of the engine 6 and reduce the impact of engine 6 vibration.

[0032] The vibration of engine 6 is partially absorbed by the frame and partially absorbed by the shock-absorbing pads, which not only alleviates the impact of vibration on the frame, but also reduces the impact of vibration on the gearbox 8.

[0033] In some embodiments, the rear beam 3 includes a left beam 31 and a right beam 32, with a gearbox 8 installed between the left beam 31 and the right beam 32. Important components such as the fuel tank and the aftertreatment system of the engine 6 are mounted on the left beam 31 and the right beam 32 by thickening and enlarging the mounting points.

[0034] In some embodiments, crossbeams 9 are installed on the left main beam 31 and the right main beam 32 for mounting the driver's cab.

[0035] In some embodiments, the gearbox 8 is connected to the engine 6 via a drive shaft 10. Using a drive shaft 10 instead of high-precision threaded holes and connecting surfaces allows the engine 6 and gearbox 8 to be relatively independent, minimizing mutual interference, extending overall service life, reducing costs, and facilitating maintenance.

[0036] Example 2: A high-horsepower tractor is provided, including the high-horsepower tractor frame described in Example 1.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-horsepower tractor frame, characterized in that, The high-horsepower tractor frame is a variable cross-section semi-frame with longitudinal beams whose cross-sectional area varies along the length of the tractor, including a front bracket (1), a middle beam (2), and a rear beam (3) connected in sequence. The frame is provided with mounting points for the cooling system assembly (4), the counterweight connecting frame (5), the engine (6), the front axle (7), the gearbox (8), and the crossbeam (9); The longitudinal beam is thickened and / or heightened in stress concentration sections along the tractor length direction, and its thickness and / or height is reduced in non-stress concentration sections.

2. The high-horsepower tractor frame according to claim 1, characterized in that, The front bracket (1) is equipped with a heat dissipation system assembly (4), which includes an intercooler, an oil radiator and a water radiator.

3. The high-horsepower tractor frame according to claim 1, characterized in that, The front bracket (1) is also equipped with a counterweight connecting bracket (5) for assembling the front counterweight.

4. The high-horsepower tractor frame according to claim 1, characterized in that, The front axle (7) is installed below the central beam (2) to provide driving force.

5. The high-horsepower tractor frame according to claim 1, characterized in that, The central beam (2) is connected to the engine (6) to lower the center of gravity of the engine (6).

6. The high-horsepower tractor frame according to claim 1, characterized in that, The rear beam (3) includes a left beam (31) and a right beam (32), and a gearbox (8) is installed between the left beam (31) and the right beam (32).

7. The high-horsepower tractor frame according to claim 6, characterized in that, The left beam (31) and right beam (32) are equipped with crossbeams (9) for mounting the cab.

8. The high-horsepower tractor frame according to claim 6, characterized in that, The gearbox (8) is connected to the engine (6) via a drive shaft (10).

9. A high-horsepower tractor, characterized in that, Includes the high-horsepower tractor frame as described in any one of claims 1 to 8.

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