An adjustable wheelbase chassis structure for agricultural machinery

Abstract

This utility model relates to the field of agricultural machinery technology and discloses an adjustable wheelbase chassis structure for agricultural machinery. It includes a base plate on which wheels are connected via an adjusting assembly. The adjusting assembly includes a hydraulic cylinder fixed to the base plate and a lifting frame. The top of the lifting frame is slidably connected to the base plate, and the wheels are connected to both sides of the bottom of the lifting frame. The lifting frame includes a connecting arm 1 and a connecting arm 2 arranged symmetrically front to back. Multiple connecting rods 1 and 2 are rotatably connected between the two connecting arms 1 and 2. The connecting arms 1 and 2 are arranged in a cross pattern and hinged together by pins. A connecting block 1 is connected to the telescopic end of the hydraulic cylinder, and a pin is rotatably inserted into the connecting block 1. The lifting frame is raised or lowered by the hydraulic cylinder to change the wheel spacing on both sides, thereby adjusting the wheelbase and enhancing driving stability.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to an adjustable wheel track chassis structure for agricultural machinery. Background Technology

[0002] Agricultural machinery refers to all kinds of mechanical equipment used in agricultural production, agricultural product processing, and related activities. They are an indispensable and important part of modern agriculture, greatly improving agricultural production efficiency and reducing labor intensity.

[0003] Traditional agricultural machinery has a fixed and non-adjustable wheel track. However, when the vehicle is traveling on some earthen slopes, the pile of materials on the vehicle will increase the center of gravity of the vehicle. Since the wheel track is not adjustable and the wheel track is short, the vehicle may overturn during travel, resulting in poor stability. Utility Model Content

[0004] (I) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned agricultural machinery with non-adjustable wheel track and poor stability, and to provide an agricultural machinery chassis structure with adjustable wheel track.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an adjustable wheelbase agricultural machinery chassis structure, including a base plate, on which wheels are connected via an adjusting assembly. The adjusting assembly includes a hydraulic cylinder and a lifting frame fixedly mounted on the base plate. The top of the lifting frame is slidably connected to the base plate, and the wheels are connected to both sides of the bottom of the lifting frame. The lifting frame includes a connecting arm 1 and a connecting arm 2 arranged symmetrically front and rear. Multiple connecting rods 1 and 2 are rotatably connected between the two connecting arms 1 and 2. The connecting arms 1 and 2 are arranged in a cross pattern and are hinged together by a pin. The telescopic end of the hydraulic cylinder is connected to a connecting block 1, and the pin is rotatably inserted into the connecting block 1.

[0008] As an improvement: there are two connecting rods, one and two connecting rods, respectively located at both ends of connecting arm one and connecting arm two. The bottom surface of the base plate is provided with two fixing plates, one on the left and one on the right. The fixing plates are arranged symmetrically front and back. The fixing plates are provided with sliding holes one and two on the fixing plates. The connecting rods 1 and 2 located above are slidably disposed in the sliding holes one and two on the fixing plates.

[0009] As an improvement: the bottom of the base plate is provided with symmetrically arranged electromagnets, and iron fixing blocks one and two are respectively provided on the connecting rod one and connecting rod two near one end of the electromagnet.

[0010] As an improvement: a control box is provided on the base plate, and the electromagnet and hydraulic cylinder are electrically connected to the control box respectively.

[0011] As an improvement: connecting blocks 1 and 2 are rotatably connected to connecting rod 1 and connecting rod 2 at the ends away from the electromagnet, and the wheel is rotatably connected to connecting blocks 1 and connecting blocks 2 respectively.

[0012] As an improvement: both ends of the connecting rod one and connecting rod two are connected to mounting blocks, and auxiliary wheels are hinged on the mounting blocks.

[0013] (III) Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] Through the coordinated operation of the hydraulic cylinder and the lifting frame, the hydraulic cylinder retracts, thereby driving the pin on the lifting frame to rise, reducing the distance between the pin and the base plate, thus changing the distance between the left and right wheels, achieving wheel track adjustment, lowering the vehicle's center of gravity, and enhancing the stability of the vehicle during driving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an adjustable wheel track chassis for agricultural machinery according to this utility model.

[0017] Figure 2 yes Figure 1 A magnified schematic diagram of the local A structure.

[0018] Figure 3 yes Figure 1 A schematic diagram of the upward-facing structure.

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of the local B structure.

[0020] [Explanation of Labels in the Attached Image]

[0021] 1. Base plate; 2. Wheel; 3. Hydraulic cylinder; 4. Connecting arm one; 5. Connecting arm two; 6. Connecting rod one; 7. Connecting rod two; 8. Pin; 9. Connecting block one; 10. Fixing plate one; 11. Fixing plate two; 12. Sliding hole one; 13. Sliding hole two; 14. Electromagnet; 15. Fixing block one; 16. Fixing block two; 17. Control box; 18. Connecting block two; 19. Connecting block three; 20. Mounting block; 21. Auxiliary wheel. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0023] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0024] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1 and Figure 3 As shown, an adjustable wheelbase agricultural machinery chassis structure includes a base plate 1. Wheels 2 are connected to the base plate 1 via an adjusting assembly. The adjusting assembly includes a hydraulic cylinder 3 fixed to the base plate 1 and a lifting frame. The top of the lifting frame is slidably connected to the base plate 1. The wheels 2 are connected to both sides of the bottom of the lifting frame. The lifting frame includes a connecting arm 4 and a connecting arm 5 arranged symmetrically front to back. Two connecting rods 6 and 7 are rotatably connected between the two connecting arms 4 and 5, respectively located at both ends of the connecting arms 4 and 5. The connecting arms 4 and 5 are arranged in a cross pattern and hinged together by a pin 8. A connecting block 9 is connected to the telescopic end of the hydraulic cylinder 3, and the pin 8 is rotatably inserted into the connecting block 9. (The last sentence appears to be incomplete and possibly refers to an appendix.) Figure 3 and Figure 4 As shown, the bottom surface of the base plate 1 is provided with a fixing plate 10 and a fixing plate 11 at the left and right ends respectively. There are two fixing plates 10 and two fixing plates 11, and they are arranged symmetrically in front and behind. The fixing plates 10 and two fixing plates 11 are provided with sliding holes 12 and 13 respectively. The connecting rods 16 and 7 located above are slidably disposed in the sliding holes 12 and 13 respectively.

[0026] When the extension end of the hydraulic cylinder 3 retracts, it pulls the connecting block 9 upward. Since the hydraulic cylinder 3 is located at the center of the base, the angle between the connecting arm 4 and the connecting arm 5 decreases. The connecting rod 6 and the connecting rod 7 slide towards the sides of the sliding hole 12 and the sliding hole 13, respectively. By controlling the extension and retraction of the hydraulic cylinder 3, not only can the distance between the wheels 2 on both sides be adjusted, but the distance between the base plate 1 and the ground is also reduced, which increases the stability of the vehicle and prevents the vehicle from overturning during heavy driving.

[0027] To further improve the stability of the position of the rear wheel 2 after adjustment, combined with the attached... Figure 3As shown, the bottom of the base plate 1 is provided with symmetrically arranged electromagnets 14. Iron fixing blocks 15 and 16 are respectively installed on connecting rod 6 and connecting rod 7 near one end of the electromagnet 14. A control box 17 is provided on the base plate 1, and the electromagnets 14 and hydraulic cylinder 3 are electrically connected to the control box 17. When the wheel spacing 2 needs to be adjusted, the control box 17 receives a signal from the operator to start the hydraulic cylinder 3 and simultaneously disconnects the power supply to the electromagnet 14, eliminating magnetic force at that point. Fixing blocks 15 and 16 can then move horizontally along the sliding holes 12 and 13 with the lifting frame. After adjustment, the hydraulic cylinder 3 stops working, the electromagnet 14 is energized, and it firmly attracts fixing blocks 15 and 16, ensuring stability during use.

[0028] To adapt to uneven terrain and ensure good contact between wheel 2 and the ground, combined with the attached... Figure 1 and Figure 2 As shown, connecting blocks 18 and 19 are rotatably connected to connecting rod 6 and connecting rod 7 at the ends away from electromagnet 14. This rotatable connection ensures that the wheels 2 remain in contact with the ground during the adjustment of the wheel spacing, guaranteeing vehicle stability. The wheels 2 are rotatably connected to connecting blocks 18 and 19 via bearings. Mounting blocks 20 are connected to both ends of connecting rod 6 and connecting rod 7, and auxiliary wheels 21 are hinged to mounting blocks 20. During wheel spacing adjustment, the auxiliary wheels 21 can contact the ground, providing an additional support point for the lifting frame and increasing the structural stability of the spacing adjustment assembly during movement.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An agricultural machinery chassis structure with adjustable wheel track, comprising a base plate (1), wherein wheels (2) are connected to the base plate (1) via an adjustable wheel track assembly, characterized in that: The adjustable distance assembly includes a hydraulic cylinder (3) fixed on the base plate (1) and a lifting frame. The top of the lifting frame is slidably connected to the base plate (1), and the wheels (2) are connected to both sides of the bottom of the lifting frame. The lifting frame includes a connecting arm 1 (4) and a connecting arm 2 (5) arranged symmetrically in front and behind. Multiple connecting rods 1 (6) and 2 (7) are rotatably connected between the two connecting arms 1 (4) and connecting arm 2 (5). The connecting arms 1 (4) and connecting arm 2 (5) are arranged in a cross pattern and are hinged together by a pin (8). The hydraulic cylinder (3) has a connecting block (9) connected to its telescopic end, and the pin (8) is rotatably inserted into the connecting block (9).

2. The adjustable wheelbase agricultural machinery chassis structure according to claim 1, characterized in that: There are two connecting rods (6) and two connecting rods (7), which are respectively located at the two ends of connecting arm (4) and connecting arm (5). The bottom surface of the base plate (1) is provided with a fixing plate (10) and a fixing plate (11) at the left and right ends respectively. There are two fixing plates (10) and two fixing plates (11), which are arranged symmetrically in front and behind. The fixing plates (10) and the fixing plates (11) are provided with sliding holes (12) and (13). The connecting rods (6) and (7) located above are slidably located in the sliding holes (12) and (13) respectively.

3. The adjustable wheelbase agricultural machinery chassis structure according to claim 1, characterized in that: The bottom of the base plate (1) is provided with symmetrically arranged electromagnets (14), and iron fixing blocks (15) and (16) are respectively provided on the connecting rod (6) and connecting rod (7) near one end of the electromagnet (14).

4. The adjustable wheelbase agricultural machinery chassis structure according to claim 3, characterized in that: The base plate (1) is provided with a control box (17), and the electromagnet (14) and the hydraulic cylinder (3) are electrically connected to the control box (17).

5. The adjustable wheelbase agricultural machinery chassis structure according to claim 3, characterized in that: Connecting blocks 2 (18) and 3 (19) are rotatably connected to connecting rod 1 (6) and connecting rod 2 (7) at the end away from electromagnet (14), and the wheel (2) is rotatably connected to connecting blocks 2 (18) and 3 (19) respectively.

6. The adjustable wheelbase agricultural machinery chassis structure according to claim 1, characterized in that: Both ends of the first connecting rod (6) and the second connecting rod (7) are connected to mounting blocks (20), and auxiliary wheels (21) are hinged on the mounting blocks (20).

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