Fresh tobacco leaf field transport vehicle

Abstract

This utility model discloses a field transport vehicle for fresh tobacco leaves, relating to the field of agricultural transportation equipment technology. It aims to solve problems such as high labor intensity, susceptibility to getting stuck, easy loss and damage of fresh tobacco leaves, and non-adjustable wheel track in existing transport vehicles. The utility model includes a frame, V-shaped guardrails symmetrically arranged on both sides of the top of the frame, front and rear wheels, and a rotatable tie rod mounted on the front of the frame. The guardrails prevent tobacco leaves from falling and are adaptable to field ditch terrain. The front wheels can be steered via the tie rod, and the rear wheels are single-wheeled with wide tires or dual-wheeled. The tie rod has a T-shaped anti-slip grip section, and the frame and guardrails are lined with a base cloth. This transport vehicle effectively reduces labor intensity, improves efficiency, adapts to complex field terrain, protects tobacco leaf quality, has a simple structure, is easy to store, and is suitable for short-distance field transport of fresh tobacco leaves.

Description

Technical Field

[0001] This utility model relates to the technical field of field transportation equipment for tobacco leaf harvesting, and in particular to a special transport vehicle for short-distance field transportation of fresh tobacco leaves after harvesting. Background Technology

[0002] Field transportation is a crucial link in the planting and harvesting of fresh tobacco leaves. Currently, field transportation of harvested fresh tobacco leaves relies heavily on manual carrying, ordinary flatbed carts, or agricultural tricycles, which presents the following problems:

[0003] Manual carrying is labor-intensive, has low transportation efficiency, and fresh tobacco leaves are easily damaged by compression.

[0004] Ordinary flatbed carts have narrow wheels and no anti-slip design, making them prone to getting stuck in muddy fields. They also lack protective structures, causing fresh tobacco leaves to fall off easily after being piled up.

[0005] Agricultural tricycles are large and difficult to adapt to narrow paths and crisscrossing ditches in the fields. In addition, their fixed wheelbase cannot be matched with ditches of different widths, making them prone to getting stuck.

[0006] Existing transportation vehicles often fail to consider the characteristics of fresh tobacco leaves being soft and easily scratched. Direct contact with metal frames can easily lead to damage to the tobacco leaves, affecting the quality of subsequent processing.

[0007] When transportation vehicles are not in use, they take up a lot of space and are inconvenient to store.

[0008] Therefore, in view of the above-mentioned defects in the prior art, this utility model provides a special transport vehicle that is adapted to the characteristics of fresh tobacco leaves and complex road conditions in the field. Utility Model Content

[0009] This utility model aims to solve the problems of existing field transportation tools for fresh tobacco leaves, such as high labor intensity, easy stagnation, easy falling and damage of fresh tobacco leaves, and non-adjustable wheel track.

[0010] This utility model discloses a field transport vehicle for fresh tobacco leaves, comprising a frame, guardrails symmetrically arranged on both sides of the top of the frame, a front wheel installed at the front bottom of the frame, a rear wheel installed at the rear bottom of the frame, and a pull rod rotatably installed at the front of the frame. The guardrails prevent fresh tobacco leaves from falling, the pull rod is used to push or pull the transport vehicle, and the front and rear wheels cooperate to move the transport vehicle in the field. This technical solution can replace traditional methods such as manual carrying, realizing centralized carrying and transport of fresh tobacco leaves. The guardrails prevent tobacco leaves from falling during transportation, and the wheel set and pull rod reduce the intensity of manual labor and improve the efficiency of field transportation. The guardrails on both sides are designed in a "V" shape to adapt to the stacking shape of fresh tobacco leaves and conform to the sloping contours of the field ditches, reducing the probability of collision between the guardrails and the field ridges during transportation and protecting the tobacco leaves from being squeezed or scratched.

[0011] Furthermore, one end of the pull rod is connected to the front wheel drive to control the front wheel steering, and the pull rod can be rotated backward to a storage position parallel to the vehicle frame, solving the problem of inconvenient steering of traditional transportation vehicles and improving steering flexibility in narrow paths or ditches in the fields; the retractable design saves storage space when not in use, and is convenient for temporary placement in the field or storage in the warehouse.

[0012] Optionally, the rear wheel is a single unit with an axial length greater than that of the front wheel, and the outer circumference of the rear wheel is provided with anti-slip patterns to reduce the risk of the transport vehicle getting stuck in muddy fields and enhance its ability to pass through complex terrain; the single wide wheel design is adapted to narrower field ridges, avoids the problem of double wheels getting stuck, and improves adaptability to narrow paths.

[0013] Optionally, the vehicle has two rear wheels, and a vertically extending support plate is provided at the rear end of the bottom of the frame. The rear wheels are connected to the support plate via telescopic rods, which are sleeved on the support plate. A spring is provided between the rear wheels and the support plate to automatically adjust the wheelbase according to the field ditch. Shock absorbers can be installed on the support plate to buffer vibrations when the transport vehicle travels on bumpy roads.

[0014] Further description of the aforementioned scheme: the outer circumferential surface of the telescopic rod is provided with threads, and a nut is provided on the side of the telescopic rod near the support plate. By adjusting the nut, the distance between the rear wheel and the support plate can be changed, thereby adjusting the rear wheel track to adapt to field ditches or field paths of different widths, avoiding the jamming problem caused by the mismatch between the wheel track and the field ditch, and improving the adaptability to diverse field terrains.

[0015] Further description of the aforementioned solution: the end of the pull rod away from the frame is provided with a "T"-shaped grip section, and the outer periphery of the grip section is covered with a silicone sleeve with anti-slip texture, which reduces hand fatigue during operation, improves grip stability, and prevents slippage when hands are sweaty or when force is applied, making it suitable for long-term field transportation operations.

[0016] Further description of the aforementioned solution: the inner side of the frame and guardrail is covered with a base cloth to prevent fresh tobacco leaves from being scratched, dented or worn due to direct contact with hard metal surfaces, thus protecting the integrity of the fresh tobacco leaves and ensuring the quality of subsequent processing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The "V" shaped design of the guardrail can prevent fresh tobacco leaves from falling and adapt to the terrain of fields and ditches, reducing collision damage;

[0019] The rear wheels have two configuration options to suit different field conditions: a single wide wheel with anti-slip treads enhances traversability on muddy roads, while dual wheels with an adjustable track adapt to different widths of field ditches.

[0020] The lever can be steered and retracted, balancing operational flexibility with space saving.

[0021] The "T" shaped grip section and silicone sleeve improve operating comfort and reduce labor intensity;

[0022] The bottom lining prevents fresh tobacco leaves from coming into direct contact with the frame, reducing scratches and ensuring the quality of the tobacco leaves;

[0023] With its simple overall structure, low manufacturing cost, and strong adaptability, it is suitable for short-distance transportation of fresh tobacco leaves in the field. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an overall schematic diagram of Embodiment 1 of the present utility model;

[0026] Figure 2 This is an overall schematic diagram of Embodiment 2 of the present utility model;

[0027] Figure 3 This is a schematic diagram of the storage state provided in Embodiment 2 of this utility model;

[0028] Figure 4 This is a schematic diagram of the rear wheel extension provided in Embodiment 2 of this utility model;

[0029] Figure 5 This is a schematic diagram of the rear wheel retraction provided in Embodiment 2 of this utility model;

[0030] Figure 6 This is an exploded view diagram provided for Embodiment 2 of this utility model.

[0031] The following are the labeling elements in the figure:

[0032] 1. Frame; 2. Guardrail; 3. Front wheel; 4. Tie rod; 5. Rear wheel; 6. Telescopic rod; 7. Spring; 8. Support plate.

[0033] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] Please see Figure 1 As shown, this embodiment provides a field transport vehicle for fresh tobacco leaves suitable for narrow field ridges and muddy terrain. Its core improvement lies in the adoption of a single rear wheel with a wide tire design, combined with a V-shaped guardrail 2 and a retractable steering rod 4, which enables passage through narrow paths and prevents slipping and sinking. It can adapt well to the narrow and muddy environment in the field and provide convenience for the transportation of fresh tobacco leaves.

[0038] The frame 1 adopts a rectangular frame structure, with the main body made of Q235 galvanized steel pipe, which has good strength and corrosion resistance, and can be used for a long time in the humid environment of the field. The four corners of the frame are rounded to avoid scratching the fresh tobacco leaves due to the right angle structure, thus protecting the integrity of the fresh tobacco leaves. Three reinforcing ribs are welded horizontally at the bottom of the frame 1, forming a grid-like support structure with the main frame. This effectively distributes the weight of the fresh tobacco leaves, allowing the frame 1 to bear a load of up to 300kg, which fully meets the requirements for stacking bundles of fresh tobacco leaves.

[0039] A steering shaft sleeve is welded to the front end of the frame 1. The axis of the sleeve is perpendicular to the plane of the frame 1. It is used to install the steering mechanism of the front wheel 3, ensuring that the front wheel 3 can rotate flexibly to achieve the steering function. A rear wheel 5 axle bracket is welded to the middle of the rear end of the frame 1. The bracket is U-shaped and the opening faces upward. It works with a deep groove ball bearing to enable the rear wheel 5 to rotate flexibly and reduce resistance during transportation.

[0040] The guardrail 2 is made of welded round tubes and is symmetrically distributed on both sides of the frame 1, forming an overall "V" shape with an opening angle of 120°. The height of both guardrails 2 is 800mm. The "V" shape design can adapt to the stacking shape of fresh tobacco leaves, making the stacking of fresh tobacco leaves more stable. On the other hand, it can also conform to the sloping contours of the fields and ditches, reducing the probability of collision between the guardrail 2 and the field ridges during transportation, and protecting the tobacco leaves from being squeezed or scratched.

[0041] The front tire (Type 3) is a single-wheel design made of highly elastic rubber, offering good elasticity and wear resistance, enabling it to adapt to complex field conditions. The tread features lateral anti-slip patterns, effectively enhancing the front tire's grip on muddy surfaces and reducing slippage.

[0042] The rear wheel features a single wide tire design. The wider tire increases the contact area with the ground, reducing pressure on the ground and thus lowering the risk of getting stuck in muddy fields. The tread uses a herringbone anti-skid pattern, further enhancing its ability to traverse complex terrain.

[0043] In some embodiments, a mudguard made of 2mm thick steel plate is installed between the rear wheel 5 and the frame 1. The upper edge of the mudguard is welded to the frame 1, which can effectively prevent mud and water kicked up by the wheel from splashing onto the tobacco leaves and ensure the cleanliness of the fresh tobacco leaves.

[0044] The pull rod 4 is made of 25mm diameter steel tubing, providing good strength and withstanding the force exerted by the operator when pushing or pulling. It connects to the frame 1 via a hinge, with a copper bushing inside the hinge sleeve to reduce wear and ensure smoother rotation. A T-shaped grip section is welded to the end of the pull rod 4 furthest from the frame 1, with a transverse tube length of 200mm. This grip shape facilitates hand gripping, distributes hand pressure, and reduces hand fatigue. A 30mm thick silicone sleeve with a 1mm deep diamond-patterned anti-slip texture increases friction between the hand and grip section, preventing slippage due to sweat or force, making it suitable for extended field transport operations. A hanging hole at the bottom of the grip section allows for easy hanging and storage when not in use, saving storage space. The pull rod 4 can be rotated backward to a position parallel to the frame 1, reducing its overall length by 40% when folded, significantly saving storage space and facilitating temporary placement in the field or warehouse storage.

[0045] The base fabric can be made of 600D Oxford cloth, 0.5mm thick, which has good abrasion resistance and flexibility, protecting fresh tobacco leaves from scratches. A waterproof coating prevents dew or rainwater from soaking the fresh tobacco leaves and affecting their quality. Nylon hanging loops are sewn along the edges for connection to hooks on the inside of guardrail 2. The base fabric is laid on the inside of the frame 1 and guardrail 2, and the bottom contact point with the frame 1 is secured with Velcro to ensure the base fabric does not shift during transportation, providing a stable surface for the fresh tobacco leaves.

[0046] When using this transport vehicle, the first step is loading the freshly picked tobacco leaves along the "V"-shaped structure of the guardrail 2. During transport, the operator holds the "T"-shaped grip section and rotates the lever 4 to control the steering according to the direction of travel. It can be pushed on flat surfaces and pulled uphill. On muddy sections, the wide tires provide excellent anti-skid properties for stable passage. When turning over field ridges, rotating the lever 4 causes the front wheels 3 to deflect at the corresponding angle. After transport is complete, the lever 4 is rotated backward until it is parallel to the frame 1, reducing storage space.

[0047] Example 2

[0048] Please see Figure 2-6 As shown, this embodiment adopts a dual rear wheel 5 adjustable track design for complex terrain with varying ditch widths, which greatly improves terrain adaptability and can easily cope with ditches of different widths, avoiding getting stuck.

[0049] The frame 1 uses a rectangular frame, which has better bending resistance than round steel tubes and can provide more stable support. Five transverse reinforcing ribs are welded to the bottom of the frame 1 to form a grid-like load-bearing structure, which further enhances the load-bearing capacity of the frame 1 and ensures the safe transport of a large amount of fresh tobacco leaves.

[0050] A vertical support plate 8 is welded to the rear end of the frame 1. Two through holes are provided on the support plate 8 for mounting the telescopic rod 6, providing a basis for the installation of the rear wheel 5 and the adjustment of the wheel track. The steering axle sleeve at the front end of the frame 1 is the same as in Embodiment 1.

[0051] Guardrail 2 also has a "V" shaped structure and is made of aluminum alloy profiles. Aluminum alloy is lightweight and corrosion resistant, which reduces the weight of the whole vehicle and also makes it easier to handle and operate.

[0052] The front wheel 3 features a single-wheel design with lateral anti-skid ribs on the tread, enhancing its anti-skid performance.

[0053] The rear tire 5 features a dual-wheel design with a mixed tread pattern. The central lateral tread enhances stability during straight-line driving, while the diagonal treads on both sides improve grip during cornering, ensuring that the rear tire 5 maintains good performance in various road conditions.

[0054] The rear wheel 5 is connected to the support plate 8 via a telescopic rod 6. A spring 7 is sleeved on the outside of the telescopic rod 6, with its two ends abutting against the inner side baffle of the rear wheel 5 and the support plate 8, respectively. When the ditch spacing decreases, it compresses the two sides of the rear wheel 5, automatically changing the wheel track. Of course, in some embodiments, a locking nut is installed at the end of the telescopic rod 6, and the wheel track of the rear wheel 5 can be adjusted by rotating the nut. Alternatively, a pin can be used, and the wheel track can be changed by inserting the pin into different pin holes. The operator can flexibly adjust the wheel track according to the actual width of the ditch to adapt to ditches of different widths and avoid jamming.

[0055] The wheel hub is made of die-cast aluminum alloy, which is lightweight and high-strength. It is connected to the axle via a deep groove ball bearing, making the rear wheel 5 rotate more smoothly and reducing running resistance. Elastic retaining rings at both ends of the axle prevent detachment and ensure the safety of the rear wheel 5 during rotation.

[0056] The base fabric is made of 800D Oxford cloth, which has a higher density and stronger abrasion resistance compared to the 600D Oxford cloth in Example 1, resulting in a longer service life. The base fabric is 0.6mm thick and treated with a double-sided waterproof coating, providing better waterproofing and protecting fresh tobacco leaves from moisture erosion. The edges of the base fabric are double-stitched to increase edge strength and prevent tearing. Abrasion-resistant Oxford cloth patch is sewn onto the side of the base fabric that contacts the frame 1, corresponding to the reinforcing ribs of the frame 1, reducing friction between the base fabric and the frame 1 and extending the base fabric's service life.

[0057] In this embodiment, the operator can automatically or manually adjust the wheel track of the rear wheels 5 according to the width of the ditch when using the fresh tobacco leaf field transport vehicle. For manual adjustment, loosen the locking nut, rotate the telescopic rod 6 to match the distance between the rear wheels 5 to the width of the ditch, and then tighten the locking nut to fix the wheel track. When loading fresh tobacco leaves, neatly stack the leaves on the base cloth and secure them to the guardrail 2 with nylon ropes to prevent them from falling.

[0058] During driving, when encountering bumpy roads, the shock absorbers will act as a buffer, reducing vibration damage to the fresh tobacco leaves. When steering is required, turn the tie rod 4 to steer the front wheels 3.

[0059] The two embodiments of this utility model are designed for different field terrain characteristics. Embodiment 1 is suitable for narrow field ridges and muddy terrain, while Embodiment 2 is suitable for complex terrain with varying field ditch widths. Both can effectively solve the problems existing in the field transportation of fresh tobacco leaves, improve transportation efficiency, protect the quality of fresh tobacco leaves, and have good practicality and promotion value.

[0060] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0061] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A fresh tobacco leaf field hauler characterized by: The vehicle includes a frame (1), guardrails (2) symmetrically arranged on both sides of the top of the frame (1), a front wheel (3) installed at the front bottom of the frame (1), a rear wheel (5) installed at the rear bottom of the frame (1), and a pull rod (4) rotatably installed at the front of the frame (1); the guardrails (2) on both sides are designed in a "V" shape, the pull rod (4) is used to push or pull the transport vehicle, and the front wheel (3) and the rear wheel (5) cooperate to realize the movement of the transport vehicle in the field.

2. The field transport vehicle for fresh tobacco leaves according to claim 1, characterized in that: One end of the lever (4) is connected to the front wheel (3) to control the steering of the front wheel (3), and the lever (4) can be rotated backward to a storage position parallel to the frame (1).

3. A field transport vehicle for fresh tobacco leaves as claimed in claim 1, wherein: The rear wheel (5) is a single unit, and its axial length is greater than that of the front wheel (3). The outer circumferential surface of the rear wheel (5) is provided with anti-slip patterns.

4. A field transport vehicle for fresh tobacco leaves as claimed in claim 1, wherein: There are two rear wheels (5). The bottom rear end of the frame (1) is provided with a vertically extending support plate (8). The rear wheels (5) are connected to the support plate (8) through a telescopic rod (6). The telescopic rod (6) is sleeved with the support plate (8), and a spring (7) is provided between the rear wheels (5) and the support plate (8).

5. A fresh tobacco leaf field transport vehicle as claimed in claim 4, characterized in that: The outer circumferential surface of the telescopic rod (6) is threaded, and a nut is provided on the side of the telescopic rod (6) near the support plate (8). The distance between the rear wheel (5) and the support plate (8) can be changed by adjusting the nut, thereby realizing the adjustment of the wheel track of the rear wheel (5).

6. A field transport vehicle for fresh tobacco leaves as claimed in claim 1, wherein: The end of the pull rod (4) away from the frame (1) is provided with a "T" shaped grip section, and the outer periphery of the grip section is covered with a silicone sleeve with anti-slip texture.

7. A field transport vehicle for fresh tobacco leaves as claimed in claim 1, wherein: The inner sides of the frame (1) and guardrail (2) are covered with a base cloth.

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