A boat-type tractor with adaptive ground clearance adjustment and contoured boat-type floor structure

Abstract

This invention discloses an adaptive ground clearance adjustment and contoured boat-shaped chassis structure for a boat-type tractor, including a chassis, a frame, and an adjustment mechanism connecting the chassis and the frame. The adjustment mechanism includes a nut, a spring, and a bolt. The inner diameter of the spring is larger than the diameter of the bolt. Corresponding mounting holes are provided on the chassis and the frame. The bolt passes through the mounting holes on the chassis, the spring, and the mounting holes on the frame in sequence and is threadedly connected to the nut. By setting the adjustment mechanism, the distance between the chassis and the frame can be automatically adjusted according to the depth of the mud, improving the boat-type tractor's passability in mud of various depths, and thus adapting to the tillage requirements of mud of various depths.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, specifically to a boat-type tractor with adaptive ground clearance adjustment and a contoured boat-type bottom plate structure. Background Technology

[0002] Paddy field tractors are used to tow implements in paddy fields for operations. Boat-type paddy field tractors, in particular, were developed specifically for operations in deep, muddy paddy fields. Based on the "semi-submerged, semi-floating" principle of agricultural boats, the boat-type tractor is a specialized paddy field tractor. Its driving force primarily comes from the impeller propelling it through the mud, and it slides forward by contacting the mixing mud and water with its base plate. It is currently a key piece of equipment for solving the problems of deep, muddy paddy field and coastal mudflat operations in my country, and is urgently needed in the Hubei and Hunan regions, the Northeast Three Rivers region, and coastal mudflats. Currently, my country has 500 million mu of paddy fields, of which 30% (150 million mu) are deep, muddy paddy fields or paddy fields adjacent to them. Boat-type tractors are the most effective and urgently needed equipment for cultivating this portion of paddy fields.

[0003] In actual paddy field cultivation, the mud depth varies, and can be categorized into shallow mud (less than 30cm), medium-deep mud (30-40cm), and extremely deep mud (greater than 50cm). Existing fixed-clearance boat tractors cannot simultaneously adapt to the cultivation requirements of various mud depths. In particular, when encountering shallow mud, i.e., when encountering localized hard mud layers during cultivation, the impeller resistance is high, which can easily lead to poor passability of the boat tractor during cultivation, or even cause the entire machine to "run aground" and be unable to move forward, directly affecting the effectiveness of paddy field cultivation. Summary of the Invention

[0004] To address the limitations of existing boat-shaped tractor bases in adapting to varying mud depths, a boat-shaped tractor with adaptive ground clearance adjustment and a contoured boat-shaped base plate structure is provided. By incorporating an adjustment mechanism, the distance between the base plate and the frame can be automatically adjusted according to the mud depth, improving the boat-shaped tractor's passability in mud of various depths and thus adapting to the tillage requirements of different mud depths.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An adaptive ground clearance adjustment and contoured boat-shaped base plate structure for a boat-type tractor includes a base plate, a frame, and an adjustment mechanism connecting the base plate and the frame. A boat-type tractor impeller is mounted on the frame. The adjustment mechanism includes a nut, a spring, and a bolt. The inner diameter of the spring is larger than the diameter of the bolt. Corresponding mounting holes are provided on the base plate and the frame. The bolt passes through the mounting holes on the base plate, the spring, and the mounting holes on the frame in sequence and is threadedly connected to the nut.

[0007] Furthermore, the bottom of the base plate is W-shaped at the front, back, left, and right.

[0008] Furthermore, an ear seat is fixed on the base plate, and the ear seat is provided with the mounting hole.

[0009] Furthermore, a crossbeam is fixed on the frame.

[0010] Furthermore, the base plate is made of an elastic, wear-resistant material.

[0011] Furthermore, the base plate is made of spring steel.

[0012] Furthermore, a matching washer is provided between the nut and the frame.

[0013] The beneficial effects of this invention are:

[0014] This invention, by setting an adjustment mechanism, can automatically adjust the distance between the bottom plate and the frame according to the depth of the mud, improving the tractor's ability to pass through mud of various depths and thus adapting to the tillage requirements of different mud depths. At the same time, the bottom plate is made of elastic and wear-resistant material, which can deform to a certain extent when encountering resistance, allowing it to pass through shallow mud areas better. In addition, the bottom of the bottom plate is "W" shaped at the front, back, left, and right sides, specifically with both ends convex downwards and the middle concave upwards, which can reduce the sliding resistance of the tractor on the paddy field surface. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the base plate structure in this invention.

[0016] Figure 2 For the present invention Figure 1 BB section view.

[0017] Figure 3 For the present invention Figure 2 An explosion diagram.

[0018] Figure 4 This is a front view of the base plate structure of the present invention.

[0019] In the diagram, 1. base plate; 11. lug; 2. frame; 21. crossbeam; 3. adjustment mechanism; 31. nut; 32. washer; 33. spring; 34. bolt. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0021] like Figures 1-3As shown, the boat-type tractor features an adaptive ground clearance adjustment and a contoured boat-shaped chassis structure, including a chassis 1, a frame 2, and an adjustment mechanism 3 connecting the chassis 1 and the frame 2. The adjustment mechanism 3 includes a nut 31, a washer 32, a spring 33, and a bolt 34. The inner diameter of the spring 33 is larger than the diameter of the bolt 34. A lug 11 is fixed on the chassis 1, and corresponding mounting holes are provided on the lug 11 and the frame 2. The bolt 34 passes sequentially through the mounting holes on the chassis 1, the spring 33, the mounting holes on the lug 11, and the washer 32, and is threadedly connected to the nut 31. The maximum length of the spring 33 during operation can be adjusted by adjusting the bolt 34 and the nut 31, enabling manual pre-adjustment of the ground clearance. A crossbeam 21 is fixed on the frame 2 for its fixation. The frame 2 is fixedly connected to the boat-type tractor via a suspension system (not shown in the figure). Simultaneously, the impeller of the boat-type tractor (not shown in the figure) is mounted on the frame 2. The chassis 1 is made of an elastic, wear-resistant material; in this embodiment, spring steel is used, which can deform to a certain extent when encountering resistance. Figure 2-4 It can be seen that the bottom of the base plate 1 is "W" shaped at the front, back, left and right, specifically convex at both ends and concave in the middle, which can reduce the sliding resistance of the boat tractor on the paddy field surface.

[0022] Working principle: When the boat-type tractor is in extremely deep mud, the bottom plate floats on the surface of the mud and water. Under the action of the machine body's gravity and the cooperation of the adjustment mechanism, the frame lowers relative to the bottom plate. Since the impeller and the frame are in a fixed relative position, the impeller also lowers relative to the bottom plate, so that the impeller is in a deeper position in the mud and water. During the operation of the boat-type tractor, the impeller has a large sliding force on the machine body and a strong ability to resist sliding resistance during operation, which can achieve a better sliding state.

[0023] When the boat-type tractor is in shallow mud, the impeller contacts the hard bottom due to the shallow mud depth, and the weight of the machine body is mainly borne by the impeller. At this time, with the gravity of the base plate and the cooperation of the adjustment mechanism, the adjustment spring will extend, causing the base plate to drop relative to the impeller, so that the base plate floats on the mud surface, sharing the force on the impeller, thereby reducing the resistance of the impeller rotation, reducing fuel consumption, and improving the boat-type tractor's ability to pass through shallow mud.

[0024] The examples described are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention are within the protection scope of the present invention.

Claims

1. A boat-type tractor with adaptive ground clearance adjustment and contour-following boat-type floor structure, characterized in that: The system includes a base plate (1), a frame (2), and an adjustment mechanism (3) connecting the base plate (1) and the frame (2). A boat-type tractor impeller is installed on the frame (2). The adjustment mechanism (3) includes a nut (31), a spring (33), and a bolt (34). The inner diameter of the spring (33) is larger than the diameter of the bolt (34). The spring (33) can automatically extend and retract when the mud depth changes, so as to realize the adaptive adjustment of the distance between the base plate (1) and the frame (2). The base plate (1) and the frame (2) are provided with corresponding mounting holes. The bolt (34) passes through the mounting holes on the base plate (1), the spring (33), and the mounting holes on the frame (2) in sequence and is threaded to the nut (31). The bottom plate (1) is "W" shaped at the front, back and left and right bottoms, specifically with both ends convex downwards and the middle concave upwards, which can reduce the sliding resistance of the boat tractor on the paddy field surface.

2. The base plate structure according to claim 1, characterized in that: An ear seat (11) is fixed on the base plate (1), and the ear seat (11) is provided with the mounting hole.

3. The base plate structure according to claim 1, characterized in that: A crossbeam (21) is fixed on the frame (2).

4. The base plate structure according to claim 1, characterized in that: The base plate (1) is made of an elastic and wear-resistant material.

5. The base plate structure according to claim 4, characterized in that: The base plate (1) is made of spring steel.

6. The base plate structure according to claim 1, characterized in that: A matching washer (32) is provided between the nut (31) and the frame (2).

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