An adjustable support leg for a boat

Abstract

The utility model relates to the field of emergency rescue, put forward a kind of boat adjustable supporting leg, folding leg and connecting leg, folding leg and connecting leg are movably connected by clamping assembly;Folding leg upper end one side is rotatably connected with gyro wheel, and the bottom of connecting leg is fixedly connected with fixed plate on both sides;Through the multiple clamping slots one of circumferential arrangement of arc clamping plate in clamping assembly, cooperate the movable shaft of spring loading, the accurate adjustment and locking of folding leg at different angles can be realized;The left-right symmetry of arc clamping plate and connecting plate can form left-right double-point support between folding leg and connecting leg, and the stress is balanced, and the connecting strength is enhanced, avoid the shaking or deformation of folding leg and connecting leg due to unilateral stress;By pulling pull plate, arc clamping plate and movable shaft can be unlocked, and it is automatically locked when loosening, and single hand can complete adjustment, and it is simple and quick to operate, can realize quick positioning buckling, avoid because of card stagnation, operation is complicated and rescue time is delayed.

Description

Technical Field

[0001] This utility model relates to the field of emergency rescue, and in particular to an adjustable support leg for boats. Background Technology

[0002] Currently, my country mainly uses assault boats and rubber boats for emergency rescue and flood control. While these boats are lightweight, maneuverable in water, and widely used, they require specialized transport vehicles for loading and unloading, and need to be manually lifted to shore, which is cumbersome and inefficient. Furthermore, the hulls are easily worn down in unstable terrain such as mud, gravel, and slopes. Existing amphibious boats, although adapted to both land and water environments, have wheels that cannot be retracted, making them prone to snagging on objects in the water or getting tangled in vehicles, affecting their normal operation. Additionally, the fixed opening and retracting positions of the folding legs do not meet the height requirements for some special terrain conditions. Utility Model Content

[0003] To overcome the problem that existing rescue boats cannot be folded, which affects their speed in the water, this utility model provides an adjustable support leg for the boat, including a folding leg and a connecting leg. The folding leg and the connecting leg are movably connected by a snap-fit ​​assembly. A roller is rotatably connected to one side of the upper end of the folding leg, and a fixing plate is fixedly connected to the left and right sides of the bottom of the connecting leg. The snap-fit ​​assembly includes an arc-shaped snap-fit ​​plate, a connecting plate, and a pull plate. The arc-shaped snap-fit ​​plates are symmetrically fixed to the lower left and right sides of the front side of the folding leg. The edges of the arc-shaped snap-fit ​​plates have at least two snap-fit ​​grooves along their circumferential direction. The connecting plates are symmetrically fixed to the upper left and right sides of the front side of the connecting leg. The lower end of each connecting plate is fixedly connected to the connecting leg, and the connecting plate extends upwards to the front side of the folding leg and is rotatably connected to the arc-shaped snap-fit ​​plate. Each of the two connecting plates has a movable groove, and a movable shaft is installed within the movable groove. Both ends of the movable shaft are fixedly connected to the pull plate. A spring connects the movable shaft and the folding leg. One end of the spring is fixedly connected to the movable shaft, and the other end of the spring is fixedly connected to the lower front side of the folding leg. The connecting leg and the folding leg are provided with locking components on the rear side to securely connect them.

[0004] Preferably, the locking assembly includes a fixed base, a wrench, a connecting rod, and a pull rod. The fixed base is fixedly connected to the connecting leg. The wrench is rotatably connected to both sides of the fixed base. The two wrenches are transversely connected to a rotatably connected connecting rod in their middle sections. The two ends of the connecting rod are vertically connected to a threaded pull rod.

[0005] Preferably, the two ends of the movable shaft extend out of the movable groove, and the length of the movable shaft is greater than the width of the connecting leg.

[0006] Preferably, nuts are threaded onto the tie rods at both the upper and lower ends of the connecting rod.

[0007] Preferably, the tops of the two wrenches are fixedly connected with handles.

[0008] Preferably, a pressure plate is fixed to the bottom of the pull plate.

[0009] Preferably, the slot matches the movable shaft.

[0010] Preferably, the arc-shaped plate is located between the connecting plate and the pull plate.

[0011] Preferably, the folding legs are fixed with symmetrical hooks on the rear side; the pull rod can be fastened to the hooks.

[0012] Preferably, the connecting leg is located between the two fixing plates; the fixing plate is an L-shaped folded plate, with at least two threaded holes vertically opened on the horizontal folded plate, and slots two are opened at the top and bottom of the vertical folded plate; a strip-shaped hole is opened on the left and right side walls of the lower part of the connecting leg, and a bolt is movably installed in the strip-shaped hole. The bolt matches the slot two, and the connecting leg is fixedly connected to the fixing plate by bolts.

[0013] Compared with the prior art, the present invention has the following advantages: Multiple slots circumferentially arranged on the arc-shaped locking plate, combined with a spring-loaded movable shaft, allow for precise adjustment and locking of the folding legs at different angles. The symmetrical arrangement of the arc-shaped locking plate and the connecting plate creates dual-point support between the folding and connecting legs, ensuring balanced force distribution and enhancing connection strength. This prevents wobbling or deformation of the folding and connecting legs due to unilateral force. Pulling the pull plate unlocks the arc-shaped locking plate and the movable shaft, while releasing it automatically locks them. Adjustment can be completed with one hand, making operation simple and quick. This enables rapid positioning and engagement, preventing delays in rescue time due to jamming or cumbersome operations. Simultaneously, the spring provides continuous preload, ensuring a tight engagement between the movable shaft and the slots. The self-locking function enhances vibration resistance and prevents loosening. The pull rod is simultaneously engaged with hooks symmetrically arranged on the left and right sides, ensuring even force distribution and effectively preventing loosening or detachment on one side. This enhances overall stability and prevents the folding legs and connecting legs from wobbling or accidentally unfolding during use due to vibration or impact, resulting in higher safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the folding leg of this utility model when it is unfolded; Figure 2 for Figure 1 A schematic diagram of the right side structure of the card connector assembly; Figure 3 for Figure 1 A front view of the middle card connector assembly; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the locking component structure of this utility model; Figure 6 for Figure 5 A magnified schematic diagram of the structure at point B in the middle section; The meanings of the reference numerals in the diagram are as follows: 1. Folding leg; 2. Connecting leg; 201. Strip hole; 3. Snap-fit ​​assembly; 301. Arc-shaped snap plate; 3011. Snap slot one; 302. Connecting plate; 3021. Movable groove; 303. Pull plate; 304. Movable shaft; 305. Spring; 4. Fixing plate; 401. Snap slot two; 5. Roller; 6. Hook; 7. Locking assembly; 701. Fixing base; 702. Wrench; 703. Connecting rod; 704. Pull rod; 8. Hook. Detailed Implementation

[0015] 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 scope of protection of the present utility model.

[0016] Please refer to Figures 1 to 6. The adjustable support leg for the boat provided by this utility model includes a folding leg 1 and a connecting leg 2. The folding leg 1 and the connecting leg 2 are movably connected by a snap-fit ​​assembly 3. A roller 5 is rotatably connected to one side of the upper end of the folding leg 1, and a fixing plate 4 is fixedly connected to both the left and right sides of the bottom of the connecting leg 2. The snap-fit ​​assembly 3 includes an arc-shaped snap-fit ​​plate 301, a connecting plate 302, and a pull plate 303. The arc-shaped snap-fit ​​plate 301 is symmetrically fixed to the lower front side of the folding leg 1. The edge of the arc-shaped snap-fit ​​plate 301 has at least two snap-fit ​​grooves 3011 along its circumferential direction. The connecting plate 302 is symmetrically fixed to the upper front side of the connecting leg 2. The lower end of the connecting plate 302 is fixedly connected to the connecting leg 2. The connecting plate 302 extends upward to the front side of the folding leg 1 and is rotatably connected to the arc-shaped snap-fit ​​plate 301. Each of the two connecting plates 302 has a movable groove 3021. A movable shaft 304 is provided within the movable groove 3021, and both ends of the movable shaft 304 are fixedly connected to both sides of the pull plate 303. A spring 305 is connected between the movable shaft 304 and the folding leg 1. One end of the spring 305 is fixedly connected to the movable shaft 304, and the other end of the spring 305 is fixedly connected to the lower front side of the folding leg 1. The rear side of the connecting leg 2 and the folding leg 1 is provided with a locking component 7 that can fix the two together.

[0017] It should be noted that the multiple slots 3011 arranged circumferentially on the arc-shaped locking plate 301, together with the movable shaft 304 loaded by the spring 305, can achieve precise adjustment and locking of the folding leg 1 at different angles. The movable groove 3021 provides motion guidance and stroke limit for the movable shaft 304 to prevent over-pulling or dislocation. The symmetrically arranged arc-shaped locking plates 301 and connecting plates 302 form a double-point support on the left and right sides, with balanced force and strong torsional rigidity, avoiding swaying or deformation of the folding leg 1 and connecting leg 2 due to unilateral force. The pull plate 303 can be pulled to unlock, and it will automatically lock when released. Adjustment can be completed with one hand, which is simple and quick to operate. It can automatically achieve rapid positioning and fastening, avoiding delays in rescue time due to jamming and cumbersome operation. The spring 305 will continuously provide pre-tension to ensure that the movable shaft 304 and the slots 3011 are tightly engaged, with a self-locking function, enhanced anti-vibration and anti-loosening capabilities. The locking component 7 is used for secondary locking to prevent the folding leg 1 and connecting leg 2 from shaking or accidentally unfolding during use due to vibration or impact, thus improving safety.

[0018] This device integrates the functions of a rotating hinge, locking mechanism, and operating handle into one unit, resulting in fewer parts and a smaller footprint, which contributes to the device's lightweight and miniaturization. The components, including plates, shafts, and springs, are easy to manufacture and assemble, leading to low production costs and facilitating future maintenance and replacement.

[0019] Specifically, a pressure plate is fixed to the bottom of the pull plate 303 to facilitate applying force to the pull plate 303.

[0020] Referring to Figures 5 and 6, the locking assembly 7 includes a fixed base 701, a wrench 702, a connecting rod 703, and a pull rod 704. The fixed base 701 is fixedly connected to the connecting leg 2. Wrenches 702 are rotatably connected to both sides of the fixed base 701. Handles are fixedly connected to the top of each wrench 702. The middle sections of each wrench 702 are rotatably connected to the connecting rod 703. Pull rods 704 are threadedly threaded through both ends of the connecting rod 703. Nuts are threaded onto the pull rods 704 at both ends of the connecting rod 703. Symmetrical hooks 6 are fixed to the rear side of the folding leg 1; the pull rods 704 can be engaged with the hooks 6.

[0021] Specifically, after the folding leg 1 and connecting leg 2 are unfolded, the pull rod 74 is hooked onto the hook 6, and the wrench 702 is pulled inward. The wrench 702 rotates inward around the fixed base 701, and at the same time, the wrench 702 applies pressure to the connecting rod 703 on the side wall of the connecting leg 2. The connecting rod 703 drives the pull rod 704 to deflect inward, and finally the bottom end of the pull rod 704 is hooked onto the hook 6, realizing a secondary locking of the folding leg 1 and connecting leg 2 to prevent shaking or accidental unfolding and affecting the normal movement of the boat. The pull rod 704 is also fastened to the hooks 6 that are symmetrically arranged on the left and right sides, so that the force is evenly distributed, effectively preventing one side from loosening or falling off, and improving the overall stability. The pull rod 704 is threadedly connected to the connecting rod 703 and secured with nuts at both ends. The self-locking property of the threads prevents the pull rod 704 from loosening after locking. Rotating the nuts at both ends of the pull rod 704 allows for precise adjustment of its effective length, compensating for installation errors or wear gaps in the hook 6. It can accommodate folding legs 1 of different sizes, enhancing the product's versatility and compatibility.

[0022] Referring to Figure 1, the connecting leg 2 is located between two fixing plates 4; the fixing plate 4 is an L-shaped folded plate, with at least two threaded holes vertically opened on the horizontal folded plate, and slots 401 are opened at the top and bottom of the vertical folded plate; a strip hole 201 is opened on the left and right side walls of the lower part of the connecting leg 2, and a bolt is movably installed in the strip hole 201. The bolt matches the slot 401, and the connecting leg 2 is fixedly connected to the fixing plate 4 by bolts.

[0023] When it is necessary to unfold the connecting leg 2, loosen the bolt in the strip hole 201 to release the restriction of the connecting leg 2 on the slot 401. After rotating it upward 180 degrees, use the bolt again to fix the connecting leg 2 to the slot 401 on the top of the fixing plate 4.

[0024] The implementation principle of this utility model is described below with reference to Figures 1 to 6: In use, the connecting leg 2 is fixedly installed on the side plate of the power unit at the bottom of the boat using the fixing plate 4. The connecting leg 2 and the fixing plate 4 are fixedly connected using the slot 2 401 and the strip hole 201. When the support leg needs to be unfolded, the connecting leg 2 is flipped upwards and fixedly locked into the slot 2 401 on the top of the fixing plate 4. The bolts are tightened, and then the pull plate 303 is pressed down. The slot 1 3011 on the arc-shaped plate 301 disengages from the limit of the movable shaft 304. Under the action of the spring 305, the arc edge of the arc-shaped plate 301 moves and deflects upwards along the movable shaft. The movable shaft 304 provides a trajectory guide for the rotation of the arc-shaped plate 301. The multiple slots 1 3011 set circumferentially on the arc-shaped plate 301 can realize the precise adjustment and locking of the folding leg 1 at different angles. At the same time, the movable groove 3021 provides motion guidance and stroke limit for the movable shaft 304 to prevent over-pulling or dislocation. The movable shaft 304 is finally locked in the arc-shaped plate 301. Within the lowest slot 3011, the folding leg 1 and connecting leg 2 are unfolded and automatically locked. To prevent swaying or accidental unfolding that could affect the boat's normal movement, the lever 704 is hooked onto the hook 6. Pulling the lever 702 inward causes it to rotate inward around the fixed base 701. Simultaneously, the lever 702 applies pressure to the connecting rod 703 against the side wall of the connecting leg 2. The connecting rod 703 causes the lever 704 to deflect inward, ultimately hooking its bottom end onto the hook 6, thus achieving a secondary locking of the folding leg 1 and connecting leg 2. At this point, the boat can be quickly moved to the desired position using the roller 5 on the folding leg 1. When the boat needs to be launched, first pull the lever 702 downward, causing it to deflect downward around the fixed base 701, releasing the lever 704 from the hook 6. After removing the restrictions between the two, press the pull plate 303 to release the restriction of the movable shaft 304 on the slot 1 3011, flip the folding leg 1 downward, and rotate the arc-shaped plate 301 downward along the movable shaft 304 until the uppermost slot 1 3011 engages with the movable shaft 304; loosen the bolts between the connecting leg 2 and the fixing plate 4, flip the connecting leg 2 downward 180 degrees, and finally use bolts to fix the connecting leg 2 into the slot 2 401 at the lower end of the fixing plate 4, fixing the support leg as a whole onto the fixing plate 4 to prevent the boat from swaying or accidentally unfolding when moving in the water; this device can be unlocked by pulling the pull plate 303 and automatically locked when released; it can be adjusted with one hand, is simple and quick to operate, and automatically and quickly positions and engages, avoiding delays in rescue time due to jamming and cumbersome operation; the spring 305 continuously provides pre-tension force and has a self-locking function, enhancing the anti-loosening ability. Furthermore, with the secondary locking mechanism 7, the security is enhanced.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable support leg for a boat, characterized in that, It includes a folding leg (1) and a connecting leg (2), which are movably connected by a snap-fit ​​assembly (3); a roller (5) is rotatably connected to one side of the upper end of the folding leg (1), and a fixing plate (4) is fixedly connected to the left and right sides of the bottom of the connecting leg (2). The snap-fit ​​assembly (3) includes an arc-shaped snap plate (301), a connecting plate (302), and a pull plate (303). The arc-shaped snap plate (301) is symmetrically fixed on the lower left and right sides of the front side of the folding leg (1). The edge of the arc-shaped snap plate (301) has at least two snap grooves (3011) along the circumferential direction. The connecting plate (302) is symmetrically fixed on the upper left and right sides of the front side of the connecting leg (2). The lower end of the connecting plate (302) is fixedly connected to the connecting leg (2). The connecting plate (302) extends upward to the front side of the folding leg (1) and is rotatably connected to the arc-shaped snap plate (301). The two connecting plates (302) are provided with movable grooves (3021). Movable shafts (304) are provided in the movable grooves (3021). The two ends of the movable shafts (304) are fixedly connected to the two sides of the pull plate (303). A spring (305) is connected between the movable shaft (304) and the folding leg (1). One end of the spring (305) is fixedly connected to the movable shaft (304), and the other end of the spring (305) is fixedly connected to the lower front side of the folding leg (1). The connecting leg (2) and the folding leg (1) are provided with a locking component (7) that can fix the two together.

2. The adjustable support leg for a boat according to claim 1, characterized in that, The locking assembly (7) includes a fixed seat (701), a wrench (702), a connecting rod (703), and a pull rod (704). The fixed seat (701) is fixedly connected to the connecting leg (2). The fixed seat (701) is rotatably connected to the left and right sides. The two wrenches (702) are transversely connected to the middle section of the two wrenches (702) and the connecting rod (703) is rotatably connected. The two ends of the connecting rod (703) are vertically connected to the pull rod (704).

3. The adjustable support leg for a boat according to claim 1 or 2, characterized in that, The two ends of the movable shaft (304) extend out of the movable groove (3021), and the length of the movable shaft (304) is greater than the width of the connecting leg (2).

4. The adjustable support leg for a boat according to claim 3, characterized in that, Nuts are threaded onto the tie rods (704) at both ends of the connecting rod (703).

5. The adjustable support leg for a boat according to claim 2, characterized in that, The two wrenches (702) are fixedly connected to the top with handles.

6. The adjustable support leg for a boat according to claim 1, 2, or 4, characterized in that, A pressure plate is fixed to the bottom of the pull plate (303).

7. The adjustable support leg for a boat according to claim 6, characterized in that, Slot 1 (3011) is matched with movable axis (304).

8. The adjustable support leg for a boat according to claim 1, 2, 4, or 7, characterized in that, The arc-shaped plate (301) is located between the connecting plate (302) and the pull plate (303).

9. The adjustable support leg for a boat according to claim 8, characterized in that, The folding leg (1) has symmetrical hooks (6) fixed on the back side; the pull rod (704) can be fastened to the hooks (6).

10. The adjustable support leg for a boat according to claim 1, 2, 4, 7, or 9, characterized in that, The connecting leg (2) is located between the two fixing plates (4); the fixing plate (4) is an L-shaped folding plate, with no less than two threaded holes vertically opened on the horizontal folding plate, and slots (401) are opened at the top and bottom of the vertical folding plate; a strip hole (201) is opened on the left and right side walls of the lower part of the connecting leg (2), and a bolt is movably installed in the strip hole (201). The bolt matches the slot (401), and the connecting leg (2) is fixedly connected to the fixing plate (4) by bolts.

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