Small grass cutting boat for natural water body

Abstract

The utility model discloses a small -size mowing boat for weeding of natural water body, including ship body, the rotary cutting knife of installing in the below of ship body bow, the outer sheath pipe of fixedly installed in the tail of ship body and inside being provided with the transmission shaft of motor transmission connection, the gear box of outer sheath pipe lower extreme fixed connection and the propeller body being connected with gear box output shaft, gear box corresponds the fixed installation of fixed stripping scraper one side of propeller body, gear box output shaft is fixedly installed with the movable stripping scraper of contacting with fixed stripping scraper. The waterweeds that conical cage can cut off and suspend in water are guided to all directions, and the contact probability of waterweeds and propeller body is reduced, the waterweeds of conical cage swing under the water flow resistance, promote the waterweeds of surface adhesion to fall off, when the part waterweeds of gear box output shaft outer adhesion have the tendency of winding propeller body, will be cut off by the movable stripping scraper of rotating and the fixed cutting of fixed stripping scraper, avoid winding waterweeds on propeller body.

Description

Technical Field

[0001] This utility model relates to the field of grass-cutting boat technology, specifically a small grass-cutting boat for weeding in natural water bodies. Background Technology

[0002] A grass-cutting boat is a specialized vessel used for cutting aquatic plants in water. It has a high-speed rotating blade at the bow. During the cutting process, long or tangled aquatic plants are chopped into shorter pieces, which are then collected by a grass-collecting boat to complete the water cleanup. The grass-cutting boat moves forward while cutting aquatic plants. Because the rotating blade is located at the bow, the propeller at the stern inevitably comes into contact with the cut plants, causing some to become entangled in the propeller and shaft. When a significant amount of entangled plants accumulates, the boat must stop for cleaning and maintenance, affecting the work progress. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a small mowing boat for weeding in natural water bodies, which solves the problem of needing to stop the boat for cleaning and maintenance when a lot of aquatic plants get tangled on the propeller, thus affecting the progress of the work.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A small mowing boat for weeding in natural water bodies includes a hull, a rotary cutter installed below the bow of the hull, an outer sheath fixed to the stern of the hull and having an internal transmission shaft connected to a motor, a gearbox fixedly connected to the lower end of the outer sheath, and a propeller body connected to the output shaft of the gearbox. A fixed scraper is fixedly installed on one side of the gearbox corresponding to the propeller body, and a movable scraper that contacts the fixed scraper is fixedly installed on the output shaft of the gearbox. The gearbox and propeller body are provided with a conical cage frame on the outside, with the tip of the conical cage frame facing the bow of the hull. The conical cage frame is connected to the gearbox by a spring plate. A spring telescopic rod is installed on the horizontal axis inside the conical cage frame. The end of the spring telescopic rod near the gearbox is movably connected to the outer shell of the gearbox by a ball joint.

[0005] Preferably, auxiliary blades are installed on the outside of the conical cage frame.

[0006] Preferably, the conical cage includes a bullet-shaped fixed base and a plurality of arc-shaped guide rods that are equidistantly fixedly connected on the circumference of the fixed base.

[0007] Preferably, the spring plate is fixedly connected between the arc-shaped guide rod and the gearbox, and the spring plate has an arc-shaped structure that bends towards the fixed seat from the middle.

[0008] Preferably, the auxiliary blade is arranged along the arc-shaped guide rod.

[0009] Compared with the prior art, the present invention has the following beneficial effects: This utility model features a conical cage that guides the water plants cut by the rotating cutter and suspended in the water to all sides, pushing them away and reducing the probability of contact between the water plants and the propeller body. The conical cage is movably mounted on the gearbox housing via a spring plate, spring telescopic rod, and ball joint, allowing it to swing under water flow resistance, promoting the shedding of surface-attached water plants. When some water plants attached to the gearbox output shaft tend to entangle the propeller body, they are cut off by the rotating movable scraper and the fixed scraper, preventing water plants from entangled on the propeller body. This ensures that the propeller body works normally to propel the boat forward, making the work smoother and solving the problem of having to stop the boat for cleaning and maintenance when there are many water plants entangled on the propeller of the grass cutting boat, thus affecting the work progress. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the corresponding position of the propeller body of this utility model; Figure 3 This is a front sectional view of the conical cage frame of this utility model; Figure 4 This is a left view of the fixed and movable peeling blades of this utility model; Figure 5 This is a right view of the fixed and movable peeling blades of this utility model.

[0011] In the diagram: 1. Hull; 2. Outer sheath; 3. Gearbox; 4. Propeller body; 5. Fixed scraper; 6. Movable scraper; 7. Conical cage; 701. Fixed base; 702. Arc-shaped guide rod; 8. Spring plate; 9. Spring telescopic rod; 10. Ball joint; 11. Auxiliary blade; 12. Rotary cutting blade. Detailed Implementation

[0012] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1-5As shown, this utility model provides a technical solution: a small mowing boat for weeding in natural water bodies, including a hull 1, a rotary cutting blade 12 installed below the bow of the hull 1, an outer sheath 2 fixed to the stern of the hull 1 and having a transmission shaft inside that is connected to a motor, a gearbox 3 fixedly connected to the lower end of the outer sheath 2, and a propeller body 4 connected to the output shaft of the gearbox 3. A fixed scraping blade 5 is fixedly installed on one side of the gearbox 3 corresponding to the propeller body 4, and a movable scraping blade 6 that contacts the fixed scraping blade 5 is fixedly installed on the output shaft of the gearbox 3. A conical cage 7 is provided on the outside of the gearbox 3 and the propeller body 4. The tip of the conical cage 7 faces the bow end of the hull 1. The conical cage 7 is connected to the gearbox 3 by a spring plate 8. A spring telescopic rod 9 is installed on the horizontal axis inside the conical cage 7. The end of the spring telescopic rod 9 near the gearbox 3 is movably connected to the outer shell of the gearbox 3 through a ball joint 10. An auxiliary blade 11 is installed on the outside of the conical cage 7. The auxiliary blade 11 is set along the arc-shaped guide rod 702. The rotating cutting blade 12 is the main body and key to cutting aquatic plants. The auxiliary blade 11 is only used to assist in cutting the aquatic plants attached to the outside of the conical cage 7. Even if it cannot cut them, it does not affect the normal operation of the propeller body 4. The conical cage 7 includes a bullet-shaped fixed base 701 and multiple arc-shaped guide rods 702 that are equidistantly fixed on the circumference of the fixed base 701. The cage-shaped structure guides the aquatic plants and spreads out the aquatic plants cut by the rotating cutter 12, reducing the probability of the aquatic plants coming into contact with the propeller body 4. The spring plate 8 is fixedly connected between the arc-shaped guide rods 702 and the gearbox 3, and the spring plate 8 has an arc-shaped structure that bends towards the fixed base 701 from the middle. The setting of the spring plate 8 and the spring telescopic rod 9 allows the conical cage 7 to swing in the water due to changes in water resistance, promoting the shedding of externally attached aquatic plants.

[0014] Working principle: The conical cage 7 can guide the water plants cut by the rotating cutter 12 and suspended in the water to all sides, pushing the water plants away and reducing the probability of contact between the water plants and the propeller body 4. The conical cage 7 is movably mounted on the outer shell of the gearbox 3 through the spring plate 8, the spring telescopic rod 9 and the ball joint 10, so that it can swing under the resistance of water flow, promoting the shedding of the water plants attached to the surface. When some water plants attached to the output shaft of the gearbox 3 tend to wrap around the propeller body 4, they will be cut off by the rotating movable scraper 6 and the fixed scraper 5, preventing water plants from wrapping around the propeller body 4, ensuring that the propeller body 4 works normally to propel the hull 1 forward, making the operation smoother.

[0015] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0016] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small mowing boat for weeding in natural water bodies, comprising a hull (1), a rotary cutter (12) installed below the bow of the hull (1), an outer sheath (2) fixed to the stern of the hull (1) and having a drive shaft internally connected to a motor, a gearbox (3) fixedly connected to the lower end of the outer sheath (2), and a propeller body (4) connected to the output shaft of the gearbox (3), characterized in that: A fixed scraper (5) is fixedly installed on one side of the gearbox (3) corresponding to the propeller body (4), and a movable scraper (6) that contacts the fixed scraper (5) is fixedly installed on the output shaft of the gearbox (3). The gearbox (3) and the propeller body (4) are provided with a conical cage (7) on the outside. The tip of the conical cage (7) faces the bow of the hull (1). The conical cage (7) and the gearbox (3) are connected by a spring plate (8). A spring telescopic rod (9) is installed on the horizontal axis inside the conical cage (7). The end of the spring telescopic rod (9) near the gearbox (3) is movably connected to the outer shell of the gearbox (3) through a ball joint (10).

2. The small mowing boat for weeding in natural water bodies according to claim 1, characterized in that: An auxiliary blade (11) is installed on the outside of the conical cage (7).

3. A small mowing boat for weeding in natural water bodies according to claim 2, characterized in that: The conical cage (7) includes a bullet-shaped fixed seat (701) and a plurality of arc-shaped guide rods (702) that are fixedly connected at equal intervals on the circumference of the fixed seat (701).

4. A small mowing boat for weeding in natural water bodies according to claim 3, characterized in that: The spring plate (8) is fixedly connected between the arc-shaped guide rod (702) and the gearbox (3), and the spring plate (8) has an arc-shaped structure that bends towards the fixed seat (701) in the middle.

5. A small mowing boat for weeding in natural water bodies according to claim 4, characterized in that: The auxiliary blade (11) is positioned along the arc-shaped guide rod (702).

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