A tractor electric track assembly

Abstract

The utility model relates to tractor track technical field, concretely is a tractor electric track assembly, including main frame, first drive wheel, second drive wheel and track, the upper portion of main frame is connected first drive wheel through first support, and the lower portion of main frame is connected with second support respectively in left and right ends, and every second support is connected with a second drive wheel respectively, and the bottom of main frame is equipped with a plurality of supporting wheel, the track is around and is arranged outside first drive wheel, second drive wheel and supporting wheel, and first drive wheel and second drive wheel are all wheel hub motor, the utility model is used for electric tractor, has the advantages that starting torque is stable, and track life is long.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically to an electric track assembly for a tractor. Background Technology

[0002] With the continuous development of new energy technologies, tracked agricultural machinery such as tractors are gradually adopting electric tracks. Most existing electric tracked tractors still follow the traditional structure, only replacing the engine with an electric motor, which drives the tracks.

[0003] Hub motor technology is an important development direction of new energy technology. Hub motors have advantages such as large starting torque and high efficiency in instantaneous speed increase. At present, hub motors are widely used in heavy mining trucks and other equipment.

[0004] When existing electric tracks of tractors are driven by electric motors or hub motors, they generally use one drive wheel, with the rest being support wheels and guide wheels. The single drive wheel structure has the problem of high track tension during startup, especially with rubber tracks. This structure often leads to reduced track life and poor dynamic stability. Utility Model Content

[0005] In view of the problems pointed out in the background art, the purpose of this utility model is to propose an electric track for tractors, which solves the problem of excessive tension of the track during startup by improving the layout of the track drive wheels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A tractor electric track assembly includes a main frame, a first drive wheel, a second drive wheel, and a track. The upper part of the main frame is connected to the first drive wheel via a first bracket. The lower left and right ends of the main frame are respectively connected to second brackets, each of which is connected to a second drive wheel. Multiple support rollers are provided at the bottom of the main frame. The track is wound around the outside of the first drive wheel, the second drive wheel, and the support rollers. The inner wall of the track has a toothed belt in the middle, and friction belts on both sides of the toothed belt. Both the first drive wheel and the second drive wheel are hub motors. The first drive wheel has a first track gear that meshes with the toothed belt in the middle of the inner wall of the track. The second drive wheel has second friction pulleys on both sides that contact the friction belts on the inner wall of the track.

[0007] The first bracket is a square frame structure. The front and rear side frames of the first bracket are rotatably hinged to the middle of the main frame. The middle of the front side frame has a support, which is located inside the first bracket. The first drive wheel is mounted on the support.

[0008] The main frame has heavy-duty hinge seats on both the front and rear sides of the middle section. The front and rear side frames of the first bracket are hinged to the main frame through the heavy-duty hinge seats.

[0009] The main frame is provided with blocks at its left and right ends, respectively, corresponding to the two ends of the first support frame.

[0010] The first track gear has a first friction pulley connected to each side, and the first friction pulley is in contact with the friction belt on the inner wall of the track.

[0011] The main frame is provided with a linkage drive mechanism at both the left and right ends, and each linkage drive mechanism corresponds to a second bracket; the lower end of the second bracket is rotatably hinged to the main frame, and the upper end is rotatably hinged to the connecting rod of the corresponding linkage drive mechanism; the middle part of the second drive wheel is fixed on the second bracket, and the second friction pulleys on both sides of the second drive wheel are located on the front and rear sides of the second bracket, respectively.

[0012] The main frame has a sub-frame at its bottom, and multiple support rollers are mounted on the sub-frame.

[0013] The beneficial effects of this utility model are: the electric track assembly designed in this utility model has three drive wheels, all of which are hub motors. Compared with the original single drive wheel, it can reduce track tension by nearly two-thirds, extend track life, and reduce track cost; this utility model is used in electric tractors and has the advantages of stable starting torque and long track life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model.

[0015] Figure 2 This is a three-dimensional view of the overall structure of this utility model from another perspective.

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention after the tracks have been removed.

[0017] Figure 4 This is a three-dimensional structural diagram of the present invention after removing some of its structural components.

[0018] Figure 5 This is a three-dimensional structural view of the present invention from another perspective after removing part of the structure.

[0019] Figure 6 This is a perspective view of the three-dimensional structure of the present invention after the tracks have been removed.

[0020] In the diagram: 1. First drive wheel; 2. Second drive wheel; 3. Main frame; 4. Track; 5. Track roller; 6. First track gear; 7. Second friction pulley; 8. First friction pulley; 9. Subframe; 11. First support; 12. Second support; 31. Heavy-duty articulated seat; 32. Stop block; 41. Toothed belt; 110. Front side frame; 111. Support; 112. Rear side frame. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that 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.

[0022] like Figure 1 As shown in Figure 6, this utility model provides an electric track assembly for a tractor, including a main frame 3, a first drive wheel 1, a second drive wheel 2, and a track 4. The upper part of the main frame 3 is connected to the first drive wheel 1 via a first bracket 11. The lower left and right ends of the main frame 3 are respectively connected to second brackets 12, each second bracket 12 is connected to a second drive wheel 2, and the bottom of the main frame 3 is provided with multiple support rollers 5. The track 4 is wrapped around the outside of the first drive wheel 1, the second drive wheel 2, and the support rollers 5. The middle part of the inner wall of the track 4 has a toothed belt 41, and the two sides of the toothed belt 41 are friction belts. The first drive wheel 1 and the second drive wheel 2 are both hub motors. The first drive wheel 1 has a first track gear 6, which meshes with the toothed belt 41 in the middle part of the inner wall of the track 4. The two sides of the second drive wheel 2 are respectively provided with second friction belt pulleys 7, which contact the friction belts on the inner wall of the track 4.

[0023] This invention features a hub motor-driven design with three drive wheels. The first drive wheel 1 provides the main power, while the two second drive wheels 2 assist, transforming the track 4 from a single-point force application to a multi-point force application. This reduces the overall tension of the track 4 by nearly two-thirds. The second drive wheels 2 function as guide wheels, but because they also provide driving force, the power of the first drive wheel 1 can be appropriately reduced, resulting in a smoother overall power output.

[0024] The first support 11 has a square frame structure. The front side frame 110 and the rear side frame 112 of the first support 11 are rotatably hinged to the middle of the main frame 3. The middle of the front side frame 110 has a support 111, which is located inside the first support 11. The first drive wheel 1 is mounted on the support 111. The first drive wheel 1 and the second drive wheel 2 of this utility model both use external rotor hub motors. External rotor hub motors are existing technology, and their connection with the support 111 is known technology and will not be described in detail.

[0025] The main frame 3 has heavy-duty hinge seats 31 on both the front and rear sides of the middle section. The front side frame 110 and rear side frame 112 of the first support 11 are hinged to the main frame 3 through the heavy-duty hinge seats 31. This structure is a rotating hinge. The rotation of the main frame 3 drives the support 111 to rotate within a certain range, which can also buffer the impact on the track 4 during startup.

[0026] The main frame 3 is provided with blocks 32 at its left and right ends, respectively, corresponding to the two ends of the frame of the first support 11. When the tractor starts, the first support 11 will rotate, and the blocks 32 are used to buffer the impact of the first support 11 on the main frame 3.

[0027] The first track gear 6 has a first friction pulley 8 connected to each side, and the first friction pulley 8 is in contact with the friction belt on the inner wall of the track 4. The first friction pulley 8 can keep the track fully tensioned during operation.

[0028] The main frame 3 is equipped with linkage drive mechanisms (not shown) at both its left and right ends, each linkage drive mechanism corresponding to a second bracket. The lower end of the second bracket 12 is rotatably hinged to the main frame 1, and the upper end is rotatably hinged to the connecting rod of the corresponding linkage drive mechanism. The middle part of the second drive wheel 2 is fixed on the second bracket 12, and the second friction pulleys 7 on both sides of the second drive wheel 2 are located on the front and rear sides of the second bracket 12, respectively. Specifically, the linkage drive mechanism is prior art and therefore not shown in the figure. Its main function here is to adjust the wheel spacing of the two second drive wheels 2. The second drive wheel 2 is an external rotor hub motor, which is prior art, and its connection with the second bracket 12 is known technology and will not be described further.

[0029] The main frame 3 has a sub-frame 9 at its bottom, and multiple support rollers 5 are mounted on the sub-frame 9. The sub-frame 9 is connected to both ends of the main frame 3, with a gap in the middle. Its functions are twofold: first, to reduce weight, and second, to facilitate manufacturing and processing through a modular design.

[0030] The parts of this utility model not described in detail are existing technologies.

Claims

1. A tractor electric track assembly, comprising a main frame (3), a first drive wheel (1), a second drive wheel (2), and tracks (4), characterized in that: The upper part of the main frame (3) is connected to the first drive wheel (1) via the first bracket (11). The lower left and right ends of the main frame (3) are respectively connected to the second bracket (12). Each second bracket (12) is connected to a second drive wheel (2). The bottom of the main frame (3) is provided with multiple support rollers (5). The track (4) is wrapped around the outside of the first drive wheel (1), the second drive wheel (2) and the support roller (5). The middle part of the inner wall of the track (4) has a toothed belt (41), and the two sides of the toothed belt (41) are friction belts. The first drive wheel (1) and the second drive wheel (2) are both hub motors. The first drive wheel (1) has a first track gear (6). The first track gear (6) meshes with the toothed belt (41) in the middle part of the inner wall of the track (4). The two sides of the second drive wheel (2) are respectively provided with second friction belt pulleys (7). The second friction belt pulleys (7) are in contact with the friction belts on the inner wall of the track (4).

2. The tractor electric track assembly according to claim 1, characterized in that: The first bracket (11) is a square frame structure. The front side frame (110) and the rear side frame (112) of the first bracket (11) are respectively hinged to the middle of the main frame (3). The middle of the front side frame (110) has a support (111). The support (111) is located inside the first bracket (11), and the first drive wheel (1) is installed on the support (111).

3. The electric track assembly for a tractor according to claim 2, characterized in that: The main frame (3) has heavy-duty hinge seats (31) on both the front and rear sides of the middle section. The front side frame (110) and rear side frame (112) of the first bracket (11) are respectively hinged to the main frame (3) through the heavy-duty hinge seats (31).

4. The tractor electric track assembly according to claim 2, characterized in that: The main frame (3) is provided with blocks (32) at the left and right ends respectively corresponding to the two ends of the frame of the first bracket (11).

5. The tractor electric track assembly according to claim 1, characterized in that: The first track gear (6) is connected to two sides of a first friction pulley (8), and the first friction pulley (8) is in contact with the friction belt on the inner wall of the track (4).

6. The tractor electric track assembly according to claim 1, characterized in that: The main frame (3) is provided with a linkage drive mechanism at both the left and right ends, and each linkage drive mechanism corresponds to a second bracket; the lower end of the second bracket (12) is rotatably hinged to the main frame (3), and the upper end is rotatably hinged to the connecting rod of the corresponding linkage drive mechanism; the middle part of the second drive wheel (2) is fixed on the second bracket (12), and the second friction pulleys (7) on both sides of the second drive wheel (2) are located on the front and rear sides of the second bracket (12) respectively.

7. The electric track assembly for a tractor according to claim 1, characterized in that: The main frame (3) has a sub-frame (9) at its bottom, and multiple support wheels (5) are installed on the sub-frame (9).

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