A small tool boat made by rotational molding and capable of increased load

Abstract

The utility model discloses a small tool boat of rotational moulding can increase load, including the hull of integrated moulding through rotational moulding process, the hull has a cabin formed by the concave of upper surface, the periphery side of hull is provided with at least a pair of inflatable airbags for increasing buoyancy, and each inflatable airbag is positioned and connected with the hull through fixing structure, in the utility model, inflatable airbag and injection runner can be matched, inflatable airbag can be inflated freely, the subsequent use is convenient, the hull can have greater buoyancy, and the buoyancy increases, and the corresponding load also increases, and more scenes can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of tool boat technology, specifically to a small tool boat that can be increased in load capacity through rotational molding. Background Technology

[0002] Tool boats are important auxiliary vessels used in water operations to carry tools, equipment, and supplies. With the diversification of water activities, traditional small tool boats, mostly made of wood and metal, suffer from problems such as being bulky, easily damaged, and difficult to operate, making them unsuitable for complex working conditions. Rotational molding, with its advantages of integral molding, corrosion resistance, and impact resistance, provides a technological path for achieving lightweight and high strength in small tool boats.

[0003] However, current tool boats still have limitations in their use, specifically as follows: While current utility vessels are formed using rotational molding, their structural design is simplistic and fails to fully optimize internal space and load distribution, resulting in limited load capacity. This makes them particularly susceptible to stress concentration and deformation instability, especially in harsh aquatic environments. Furthermore, the lack of modular expansion design prevents the flexible addition of buoyancy units or load-bearing platforms to meet specific operational needs, further restricting their functional expansion and applicability to various scenarios.

[0004] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0005] This invention provides a small tool boat that can be increased in load capacity through rotational molding, aiming to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a small tool boat that can be increased in load by rotational molding, comprising a fixed structure and a hull integrally formed by rotational molding process. The hull has a cabin formed by an indentation in the upper surface. At least one pair of inflatable airbags for increasing buoyancy are provided on the outer periphery of the hull. With the line connecting the midpoint of the bow to the midpoint of the stern of the hull as a reference, each pair of inflatable airbags is symmetrically arranged. Each inflatable airbag is positioned and connected to the hull by the fixed structure. It also includes an air injection channel, which is connected to the inflatable airbags and is configured to inflate a single inflatable airbag or inflate all inflatable airbags simultaneously.

[0007] In the above scheme, the inflatable airbags can exist in two states: collapsed and fully inflated. Furthermore, inflatable airbags are usually arranged in pairs or more to ensure a more even distribution of buoyancy to the hull, preventing situations where one side experiences greater buoyancy than the other. This prevents the load (e.g., heavy objects, people) from shifting towards the direction of lower buoyancy due to an unstable center of gravity when carrying a load.

[0008] In the above solution, the inflatable airbag can be freely inflated by coordinating with the air injection channel, which is convenient for subsequent use and can give the hull greater buoyancy. With increased buoyancy, the corresponding load is also increased, making it suitable for more scenarios.

[0009] Specifically, at least two inflatable airbags are fixed to both sides of the hull using a fixed structure. Inflation is then performed through air channels to either inflate individual airbags or all airbags simultaneously. Once all airbags are fully inflated, the hull is considered inflated, and the hull with the inflated airbags fixed in place can then be used. Due to the presence of the inflatable airbags, the hull can bear a greater load.

[0010] Unlike existing utility boats, the inflatable airbags in this application can be freely fixed to the outer periphery of the hull, and a suitable number can be selected and installed specifically for the load-bearing position. This reduces the risk of stress concentration in harsh water environments. At the same time, the installation position of the inflatable airbags can be adjusted according to the actual situation. As long as the requirement that each pair of inflatable airbags is symmetrically arranged with the midpoint of the bow to the midpoint of the stern of the hull as the reference is met, stability can be guaranteed.

[0011] In the above scheme, the fixing structure can generally be the simplest straps or Velcro (i.e., Velcro is set between the inflatable airbag and the side wall of the hull), so that the positioning connection can be quickly achieved.

[0012] However, this fixing method may not be secure enough. Therefore, a further technical solution is proposed: the fixing structure includes a fixing strip, the two ends of which are detachably connected to embedded parts pre-embedded in the outer peripheral sidewall of the hull. The peripheral side of the fixing strip is bent to form a fixing groove. When the airbag is fully inflated, the shape of the fixing groove matches the cross-sectional shape of the fully inflated airbag, thereby limiting the position of the fully inflated airbag.

[0013] In a further technical solution, the fixing strip is an elastic band or a metal strip.

[0014] It should be noted that the two ends of the fixing strip are detachably connected to the embedded parts pre-embedded in the outer peripheral sidewall of the hull. The embedded parts can be bolts, screws, or pin sleeves with pin grooves. The fixing strip can be an elastic band or a metal strip. When fixing, the two ends of the fixing strip are detachably connected to the embedded parts, for example, by the cooperation of nuts and bolts, or the cooperation of pins and pin sleeves, or by a ring sleeve on the screw for limiting.

[0015] The above design allows for the rapid fixation of the inflatable airbag.

[0016] Specifically, when the fixing strip is detachably connected to the embedded part pre-embedded in the outer peripheral side wall of the ship body, the inflatable airbag can be fixed in the fixing groove. Since the shape of the fixing groove matches the cross-sectional shape of the inflatable airbag when it is fully inflated, the inflatable airbag can be fully locked in the fixing groove to achieve fixed positioning.

[0017] When the fixing strip is an elastic band, the fixing strip is fixedly connected to the inflatable airbag (by screws, glue, or Velcro, etc.), and the fixing strip can be tightened or loosened as the inflatable airbag inflates or deflates, so that the inflatable airbag can always be fixed to the side of the hull.

[0018] A further technical solution is provided where a protruding bolt is fixedly installed on the outer surface of the inflatable airbag, and a bolt through hole is provided on the fixing strip; the inflatable airbag is fixed relative to the fixing strip by the cooperation of the protruding bolt and the bolt through hole.

[0019] The above design allows the inflatable airbag to be fixed in position.

[0020] In order to fix the inflatable airbag to the fixing strip, the protruding bolt is fixed to the outer surface of the inflatable airbag with glue, and then the protruding bolt is passed through the bolt hole and a nut is put on the protruding bolt to fix the inflatable airbag relative to the fixing strip.

[0021] A further technical solution involves providing an air inlet on the surface of the inflatable airbag, which is connected to a hose to form an airflow channel for inflating a single inflatable airbag.

[0022] The above design allows each airbag to be inflated, which is suitable for manual operation. The hose is a rubber hose as is available in the prior art.

[0023] A further technical solution includes a hollow cavity integrally formed by rotational molding within the hull; an inflation port communicating with the hollow cavity is located at the bottom of the cabin; the inflatable airbags are disposed on the outer peripheral sidewalls of the hull; multiple outlet ports communicating with the hollow cavity are located above the cabin; all outlet ports are symmetrically arranged with the line connecting the midpoint of the bow to the midpoint of the stern of the hull as a reference; each outlet port is connected to the corresponding inflatable airbag via a connecting pipe; the inflation port, the hollow cavity, and the multiple outlet ports combine to form an injection channel that simultaneously inflates all inflatable airbags.

[0024] The connecting pipe is usually an existing rubber hose.

[0025] The above design enables simultaneous inflation of all airbags.

[0026] Specifically, the plug of the inflation port is opened, and then air is injected into the hollow cavity through components such as an air pump. As the gas is injected, it travels along the hollow cavity to each outlet, and then through the connecting tube connected to each outlet, it is injected into the corresponding airbag, so as to simultaneously inflate all airbags.

[0027] A further technical solution involves having two inflatable airbags, both of which are elongated. This design ensures that the hull is subjected to uniform stress.

[0028] In a further technical solution, multiple fixing strips are provided, and the multiple fixing strips are arranged along the length direction of the inflatable airbag.

[0029] The above design allows the fixing strip to fit snugly against the hull, and also makes it more secure.

[0030] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0031] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0032] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0033] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0034] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0035] The working principle and advantages of this utility model are as follows: In this invention, the inflatable airbag can be freely inflated by cooperating with the air injection channel, which makes it convenient for subsequent use and can give the hull greater buoyancy. With increased buoyancy, the corresponding load is also increased, making it adaptable to more scenarios.

[0036] Specifically, at least two inflatable airbags are fixed to both sides of the hull using a fixed structure. Inflation is then performed through air channels to either inflate individual airbags or all airbags simultaneously. Once all airbags are fully inflated, the hull is considered inflated, and the hull with the inflated airbags fixed in place can then be used. Due to the presence of the inflatable airbags, the hull can bear a greater load.

[0037] Unlike existing utility boats, the inflatable airbags in this application can be freely fixed to the outer periphery of the hull, and the appropriate number can be selected and installed according to the load-bearing position. This reduces the risk of stress concentration in harsh water environments. At the same time, the installation position of the inflatable airbags can be adjusted according to the actual situation. As long as the requirement that each pair of inflatable airbags is symmetrically arranged with the midpoint of the bow to the midpoint of the stern of the hull as the reference is met, stability can be guaranteed. Attached Figure Description

[0038] Appendix Figure 1 This is a schematic diagram of the hull structure in an embodiment of the present invention (the air injection channel is in the case of inflating all the airbags). Appendix Figure 2 This is a schematic diagram of the inflatable airbag structure in an embodiment of the present invention (the airflow channel is in the case of inflating all the inflatable airbags). Appendix Figure 3 This is a schematic diagram of the outlet structure in an embodiment of the present invention (the airflow channel is in the case of inflating all the airbags). Appendix Figure 4 This is a schematic diagram of the longitudinal section of the hull in an embodiment of the present invention (the air injection channel is in the case of inflating all the airbags). Appendix Figure 5 This is a schematic diagram of the protruding bolt structure in an embodiment of the present invention (the air injection channel is in the case of inflating all the airbags). Appendix Figure 6 This is a schematic diagram of the hose structure in an embodiment of the present invention (the air injection channel is in the case of inflating a single airbag).

[0039] In the above attached diagrams: 1. Hull; 2. Cabin; 3. Inflatable airbag; 4. Fixing structure; 5. Injection channel; 6. Fixing strip; 7. Fixing groove; 8. Protruding bolt; 9. Bolt through hole; 10. Injection port; 11. Hollow cavity; 12. Inflation port; 13. Outlet; 14. Connecting pipe; 15. Flexible hose. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0041] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0042] See appendix Figure 1 - Figure 6 As shown, a small tool boat with increased load capacity through rotational molding includes a hull 1 integrally formed by rotational molding. The hull 1 has a cabin 2 formed by a concave upper surface. At least one pair of inflatable airbags 3 for increasing buoyancy are provided on the outer periphery of the hull 1. With the midpoint of the bow to the midpoint of the stern of the hull 1 as a reference, each pair of inflatable airbags 3 is symmetrically arranged. Each inflatable airbag 3 is positioned and connected to the hull 1 by a fixing structure 4. The boat also includes an air injection channel 5, which communicates with the inflatable airbags 3 and is configured to inflate a single inflatable airbag 3 or inflate all inflatable airbags 3 simultaneously.

[0043] In this invention, the inflatable airbag 3 exists in two states: collapsed and inflated. Furthermore, the inflatable airbag 3 is typically configured in pairs or more to ensure a more uniform buoyancy applied to the hull 1, preventing situations where one side has greater buoyancy than the other. This prevents the load from sliding towards the direction of lower buoyancy when bearing a load.

[0044] In this invention, the inflatable airbag 3 can be freely inflated by cooperating with the air injection channel 5, which makes it convenient for subsequent use and allows the hull 1 to have greater buoyancy. With increased buoyancy, the corresponding load also increases, making it adaptable to more scenarios.

[0045] Specifically, at least two inflatable airbags 3 are directly fixed to both sides of the hull 1 via the fixing structure 4. Then, air is injected into individual airbags 3 or all airbags 3 are inflated simultaneously through the injection channels 5. Once all airbags 3 are fully inflated, the hull 1, with the inflated airbags 3 fixed in place, can be used. Due to the presence of the inflatable airbags 3, the hull 1 can bear a greater load.

[0046] Unlike existing utility boats, the inflatable airbags 3 in this application can be freely fixed to the outer periphery of the hull 1, and the appropriate number can be selected and installed in a targeted manner according to the load-bearing position. This reduces the risk of stress concentration in harsh water environments. At the same time, the installation position of the inflatable airbags 3 can be adjusted according to the actual situation. As long as the requirement that each pair of inflatable airbags 3 is symmetrically arranged with the midpoint of the bow to the midpoint of the stern of the hull as the reference is met, stability can be guaranteed.

[0047] Preferably, the fixing structure 4 includes a fixing strip 6, the two ends of which are detachably connected to embedded parts pre-embedded in the outer peripheral sidewall of the hull 1. The peripheral side of the fixing strip 6 is bent to form a fixing groove 7. When the inflatable airbag 3 is fully inflated, the shape of the fixing groove 7 matches the cross-sectional shape of the fully inflated airbag 3 to limit the position of the fully inflated airbag 3. The fixing strip 6 is an elastic band or a metal strip.

[0048] It should be noted that the two ends of the fixing strip 6 are detachably connected to the embedded parts pre-embedded in the outer peripheral sidewall of the hull 1. The embedded parts can be bolts, screws, or pin sleeves with pin grooves. The fixing strip 6 can be an elastic band or a metal strip. When fixing, the two ends of the fixing strip 6 are detachably connected to the embedded parts, for example, by the cooperation of nuts and bolts, or the cooperation of pins and pin sleeves, or by a ring sleeve on the screw for limiting.

[0049] With the above design, the inflatable airbag 3 can be fixed quickly (the above design can be used when inflating a single inflatable airbag 3 or when inflating all inflatable airbags 3 at the same time).

[0050] Specifically, when the fixing strip 6 is detachably connected to the embedded part pre-embedded in the outer peripheral side wall of the hull 1, the inflatable airbag 3 can be fixed in the fixing groove 7. Since the shape of the fixing groove 7 matches the cross-sectional shape of the inflatable airbag 3 when the inflatable airbag 3 is fully inflated, the inflatable airbag 3 can be fully locked in the fixing groove 7 to achieve fixed positioning.

[0051] When the fixing strip 6 is an elastic band, the fixing strip 6 is fixedly connected to the inflatable airbag 3 (by means of screws, glue, or Velcro, etc.), and the fixing strip 6 can be tightened or loosened as the inflatable airbag 3 inflates or deflates, so that the inflatable airbag 3 can always be fixed to the side of the hull 1.

[0052] like Figure 5 Preferably, an extension bolt 8 is fixedly provided on the outer surface of the inflatable airbag 3, and a bolt through hole 9 is provided on the fixing strip 6; the inflatable airbag 3 is fixed relative to the fixing strip 6 by the cooperation of the extension bolt 8 and the bolt through hole 9.

[0053] The above design allows the inflatable airbag 3 to be fixed in position.

[0054] In order to fix the inflatable airbag 3 to the fixing strip 6, the protruding bolt 8 is fixed to the outer surface of the inflatable airbag 3 with glue, and then the protruding bolt 8 is passed through the bolt hole 9 and a nut is put on the protruding bolt 8 to fix the inflatable airbag 3 relative to the fixing strip 6.

[0055] like Figure 6 Preferably, an air inlet 10 is provided on the surface of the inflatable airbag 3, and the air inlet 10 is connected to the hose 15 to form an air injection channel 5 for inflating a single inflatable airbag 3.

[0056] The above design allows each airbag 3 to be inflated, which is suitable for manual operation.

[0057] like Figure 1 - Figure 3 Preferably, the hull 1 has a hollow cavity 11 integrally formed by rotational molding; the bottom of the cabin 2 is provided with an inflation port 12 communicating with the hollow cavity 11 inside the hull 1; the inflatable airbags 3 are arranged on the outer periphery of the hull 1; the cabin 2 is provided with multiple outlet ports 13 communicating with the hollow cavity 11 inside the hull 1; all outlet ports 13 are symmetrically arranged with the line connecting the midpoint of the bow to the midpoint of the stern of the hull 1 as a reference; each outlet port 13 is connected to the corresponding inflatable airbag 3 through a connecting pipe 14; the inflation port 12, the hollow cavity 11 and the multiple outlet ports 13 combine to form an injection channel 5 that simultaneously inflates all inflatable airbags 3.

[0058] With the above design, all three inflatable airbags can be inflated simultaneously.

[0059] Specifically, the plug of the inflation port 12 is opened, and air is injected into the hollow chamber 11 through components such as an air pump. As the gas is injected, it travels along the hollow chamber 11 to each outlet 13, and then through the connecting tube 14 connected to each outlet 13, air is injected into the corresponding airbag 3 to achieve simultaneous inflation of all airbags 3. Then the plug of the inflation port 12 is closed.

[0060] Preferably, there are two inflatable airbags 3, both of which are elongated. This design ensures that the hull 1 is subjected to uniform force.

[0061] Preferably, there are multiple fixing strips 6, and the multiple fixing strips 6 are arranged along the length direction of the inflatable airbag 3.

[0062] With the above design, the fixing strip 6 can be fully attached to the hull 1, and at the same time, the fixing is more secure.

[0063] Working principle: After connecting the fixing strip 6 to the embedded part pre-embedded in the outer peripheral side wall of the hull 1, the inflatable airbag 3 can be fixed in the fixing groove 7, ensuring that at least one inflatable airbag 3 is equipped on each side of the hull 1. Then, air is injected into the individual inflatable airbag 3 through the injection channel 5 (e.g., Figure 6 ) or inflate all airbags 3 simultaneously (e.g. Figure 3 Once all the inflatable airbags 3 are fully inflated, the hull 1, with the inflatable airbags 3 fixed in place, can then be used. Due to the presence of the inflatable airbags 3, the hull 1 can bear a greater load.

[0064] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A small tool boat that can be increased in load capacity by rotational molding, characterized in that: The tool boat includes a fixed structure (4) and a hull (1) integrally formed by rotational molding. The hull (1) has a cabin (2) formed by the indentation of the upper surface. At least one pair of inflatable airbags (3) for increasing buoyancy are provided on the outer periphery of the hull (1). Based on the line connecting the midpoint of the bow to the midpoint of the stern of the hull (1), each pair of inflatable airbags (3) is symmetrically arranged. Each inflatable airbag (3) is positioned and connected to the hull (1) through the fixed structure (4). The fixing structure (4) includes a fixing strip (6), the end of which is detachably connected to an embedded part embedded in the outer peripheral sidewall of the hull (1). The peripheral side of the fixing strip (6) is bent to form a fixing groove (7). When the inflatable airbag (3) is fully inflated, the shape of the fixing groove (7) matches the cross-sectional shape of the fully inflated airbag (3) to limit the position of the fully inflated airbag (3). The tool boat also includes an air injection channel (5) that is connected to the inflatable airbags (3) and is configured to inflate a single inflatable airbag (3) or to inflate all inflatable airbags (3) simultaneously.

2. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: The fixing strip (6) is an elastic band or a metal strip.

3. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: An extension bolt (8) is fixedly provided on the outer surface of the inflatable airbag (3), and a bolt through hole (9) is provided on the fixing strip (6); The inflatable airbag (3) is fixed relative to the fixing strip (6) by the engagement of the protruding bolt (8) with the bolt through hole (9).

4. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: An air inlet (10) is provided on the surface of the inflatable airbag (3), which is connected to a hose (15) to form an air inlet channel (5) for inflating a single inflatable airbag (3).

5. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: The hull (1) has a hollow cavity (11) integrally formed by rotational molding process. The bottom of the cabin (2) is provided with an air inlet (12) that communicates with the hollow cavity (11). The airbag (3) is set on the outer periphery of the hull (1). The cabin (2) is provided with multiple outlets (13) that communicate with the hollow cavity (11) inside the hull (1). Based on the line connecting the midpoint of the bow to the midpoint of the stern of the hull (1), all outlets (13) are symmetrically arranged. Each outlet (13) is connected to the corresponding side of the inflatable airbag (3) via a connecting tube (14). The inflatable port (12), the hollow chamber (11), and the multiple outlets (13) together form an injection channel (5) that simultaneously inflates all the inflatable airbags (3).

6. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: The inflatable airbag (3) has two parts, both of which are elongated.

7. The small tool boat with increased load capacity produced by rotational molding according to claim 1, characterized in that: Multiple fixing strips (6) are provided, and the multiple fixing strips (6) are arranged along the length direction of the inflatable airbag (3).

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