Hydraulic inverted arm type boat hanging frame

Abstract

The utility model discloses a hydraulic inverted arm type boat hanging frame, which belongs to the technical field of boat hanging frames, and has the technical scheme that the hydraulic inverted arm type boat hanging frame comprises a base, two suspension arms and two hydraulic rods, the two hydraulic rods are rotatably arranged on the base, the two suspension arms respectively correspond to the two hydraulic rods, hanging cables are movably arranged on the two suspension arms, and the two suspension arms are connected with the hanging cables. Each of the two suspension arms comprises a suspension arm main body I, a suspension arm main body II and a suspension arm main body III, one end of the suspension arm main body I is rotatably connected with the base, the other end of the suspension arm main body I is rotatably connected with the output end of the hydraulic rod, and the length of the suspension arm main body I is greater than the length of the suspension arm main body II and the length of the suspension arm main body III; the gravity center of the suspension arm is lowered, so that the stability of the suspension arm is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of davits, and particularly relates to a hydraulic inverted boom davit. Background Art

[0002] A davit is a special device on a ship for lifting and unloading a workboat, abbreviated as a "davit", generally located on both sides of the ship's deck. Usually, it is inside the ship's side and extends outside the side when in use to lift or lower the boat.

[0003] Chinese Patent with publication number CN206520726U discloses a gravity hydraulic inverted boom davit. Two davit arms are hinged on a base, and the two davit arms are arranged oppositely. Each davit arm is composed of three sections: a first davit arm section, a second davit arm section, and a third davit arm section. Fixed wheels are arranged between the first davit arm section and the second davit arm section, and between the second davit arm section and the third davit arm section. A boat hoisting cable is wound around the fixed wheels. A floating pulley is arranged at the end of the third davit arm section. The floating pulley is a movable pulley. The boat hoisting cable passes around the floating pulley and then suspends a hook. And the two davit arms are connected by a connecting cross beam. A synchronous oil cylinder is arranged between the connecting cross beam and the base. The cylinder body of the synchronous oil cylinder is fixed on the base, and the piston rod of the synchronous oil cylinder is fixed to the connecting cross beam. The two davit arms are also provided with hydraulic accumulators on the first davit arm section, and the hydraulic accumulators are communicated with the cylinder body of the synchronous oil cylinder.

[0004] The above technical solution has the following defects: Each davit arm of this davit is composed of three sections: a first davit arm section, a second davit arm section, and a third davit arm section. The length of the second davit arm section is too long, and the proportion of the second davit arm section in the whole davit arm is relatively large, resulting in the center of gravity of the whole davit arm shifting towards the second section, and further increasing the center of gravity of the whole davit arm. And because the higher the center of gravity, the more easily the davit arm is affected by external environmental factors (such as wind) and shakes. Therefore, more precise control is required to maintain the stability of the davit arm. Moreover, during the operation of the davit, the stability of the davit arm directly affects the smooth lowering of the lifeboat. Summary of the Utility Model

[0005] The purpose of the present utility model is to propose a hydraulic inverted boom davit for the above problems existing in the prior art. The technical problem to be solved by the present utility model is: how to improve the stability of the davit arm.

[0006] The above technical object of the utility model can be achieved by the following technical solutions: a hydraulic inverted boom davit, including a base, two booms and two hydraulic rods. The two hydraulic rods are rotatably arranged on the base. The two booms correspond to the two hydraulic rods respectively. Hanging cables are movably arranged on the two booms. Each of the two booms includes a first boom body, a second boom body and a third boom body. One end of the first boom body is rotatably connected to the base, and the other end of the first boom body is rotatably connected to the output end of the hydraulic rod. Moreover, the length of the first boom body is greater than the lengths of the second boom body and the third boom body.

[0007] In the above-mentioned hydraulic inverted boom davit, both the first boom body and the third boom body are inclined, and the second boom body is arranged vertically.

[0008] In the above-mentioned hydraulic inverted boom davit, the length of the third boom body is greater than the length of the second boom body.

[0009] In the above-mentioned hydraulic inverted boom davit, a hydraulic support rod for supporting the workboat is arranged on the second boom body.

[0010] In the above-mentioned hydraulic inverted boom davit, a shock-absorbing block is detachably connected to the end of the hydraulic support rod.

[0011] In the above-mentioned hydraulic inverted boom davit, a first mounting seat is arranged on the base, and the end of the hydraulic rod is rotatably connected to the first mounting seat. A second mounting seat is arranged on the first boom body, and the output end of the hydraulic rod is rotatably connected to the second mounting seat.

[0012] In the above-mentioned hydraulic inverted boom davit, a first rotating wheel is rotatably arranged at the end of the first boom body. A second rotating wheel is rotatably arranged between the first boom body and the second boom body. A third rotating wheel is rotatably arranged between the second boom body and the third boom body. A fourth rotating wheel is rotatably arranged at the end of the third boom body. The hanging cable is wound around the first rotating wheel, and the hanging cable sequentially bypasses the second rotating wheel, the third rotating wheel and the fourth rotating wheel.

[0013] In the above-mentioned hydraulic inverted boom davit, a boat mooring device is arranged on the boom. The boat mooring device includes a mooring cable, a positioning wheel, a positioning block and a fixing block. The positioning block is connected to the base. The fixing block is arranged on the third boom body. The positioning block is arranged on the first boom body. One end of the mooring cable is connected to the positioning block. The mooring cable bypasses the positioning wheel and is connected to the workboat. The other end of the mooring cable is connected to the fixing block.

[0014] In the above-mentioned hydraulic inverted boom davit, a plurality of hooks are provided on the boom main body three, and the plurality of hooks are evenly distributed along the length direction of the boom main body three.

[0015] In summary, the beneficial effects of the present utility model compared with the prior art are as follows:

[0016] The boom includes a boom main body one, a boom main body two, and a boom main body three. One end of the boom main body one is rotatably connected to the base, and the other end of the boom main body one is rotatably connected to the output end of the hydraulic rod. The length of the boom main body one is greater than the lengths of the boom main body two and the boom main body three. The proportion of the boom main body one in the boom is relatively large, and the center of gravity of the boom shifts towards the boom main body one, thereby reducing the center of gravity of the boom and effectively improving the stability of the boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment;

[0018] Figure 2 It is a schematic structural diagram of another angle of the embodiment.

[0019] Reference numerals: 1, base; 2, boom; 21, boom main body one; 22, boom main body two; 23, boom main body three; 3, hydraulic rod; 4, hanging cable; 5, hydraulic support rod; 6, shock-absorbing block; 7, mounting seat one; 8, mounting seat two; 9, rotating wheel one; 10, rotating wheel two; 11, rotating wheel three; 12, rotating wheel four; 13, boat mooring device; 131, mooring cable; 132, positioning wheel; 133, positioning block; 134, fixing block; 14, hook. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following are specific embodiments of the present utility model in combination with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0021] The hydraulic inverted boom davit, as Figure 1 - Figure 2 shown, includes a base 1, two booms 2, and two hydraulic rods 3. The two booms 2 and the two hydraulic rods 3 correspond respectively. The two hydraulic rods 3 are rotatably arranged on the base 1. Specifically, a mounting seat one 7 is provided on the base 1, and the end of the hydraulic rod 3 is rotatably connected to the mounting seat one 7 through a rotating shaft.

[0022] Both of the two booms 2 include a boom main body one 21, a boom main body two 22, and a boom main body three 23. One end of the boom main body one 21 is rotatably connected to the base 1, and the other end of the boom main body one 21 is rotatably connected to the output end of the hydraulic rod 3. A mounting seat two 8 is provided on the boom main body one 21, and the output end of the hydraulic rod 3 is rotatably connected to the mounting seat two 8 through a rotating shaft.

[0023] The length of the first boom main body 21 is greater than the lengths of the second boom main body 22 and the third boom main body 23. The length of the third boom main body 23 is greater than the length of the second boom main body 22. The proportion of the first boom main body 21 in the boom 2 is relatively large, and the center of gravity of the boom 2 shifts towards the first boom main body 21, thereby reducing the center of gravity of the boom 2, effectively improving the stability of the boom 2. Moreover, both the first boom main body 21 and the third boom main body 23 are inclined, and the second boom main body 22 is arranged vertically, which helps to reduce the height of the boom 2, further lower the center of gravity, and further improve the stability of the boom 2.

[0024] Hanging cables 4 are movably arranged on both booms 2. Specifically, a first rotating wheel 9 is rotatably arranged at the end of the first boom main body 21. A second rotating wheel 10 is rotatably arranged between the first boom main body 21 and the second boom main body 22. A third rotating wheel 11 is rotatably arranged between the second boom main body 22 and the third boom main body 23. A fourth rotating wheel 12 is rotatably arranged at the end of the third boom main body 23. The hanging cable 4 is wound around the first rotating wheel 9, and the hanging cable 4 sequentially bypasses the second rotating wheel 10, the third rotating wheel 11, and the fourth rotating wheel 12.

[0025] A hydraulic support rod 5 for supporting the workboat is arranged on the second boom main body 22. During the hoisting process, the workboat may shake due to external environmental factors. The supporting effect of the hydraulic support rod 5 on the workboat can effectively reduce the shaking, keep the workboat in a relatively stable state, and thus improve the safety and efficiency of the operation.

[0026] A shock-absorbing block 6 is detachably connected to the end of the hydraulic support rod 5. Specifically, in this embodiment, the shock-absorbing block 6 is connected to the end of the hydraulic support rod 5 by a plurality of screws, and the shock-absorbing block 6 is made of rubber material, which can effectively reduce the vibration generated when the workboat contacts the shock-absorbing block 6 and avoid damaging the workboat when the two come into contact.

[0027] A boat mooring device 13 is arranged on the boom 2. The boat mooring device 13 includes a mooring cable 131, a positioning wheel 132, a positioning block 133, and a fixing block 134. The positioning block 133 is connected to the base 1. The fixing block 134 is arranged on the third boom main body 23. The positioning block 133 is arranged on the first boom main body 21. One end of the mooring cable 131 is connected to the positioning block 133. The mooring cable 131 bypasses the positioning wheel 132 and is connected to the workboat. The other end of the mooring cable 131 is connected to the fixing block 134. It should be noted that since one end of the mooring cable 131 is connected to the positioning block 133 and the other end of the mooring cable 131 is connected to the fixing block 134, the mooring cable 131 is in a taut state when it bypasses the positioning wheel 132 and is connected to the workboat, thereby ensuring the stability of the workboat during the hoisting process.

[0028] A plurality of hooks 14 are provided on the boom main body three 23, and the plurality of hooks 14 are evenly distributed along the length direction of the boom main body three 23. Connecting to any one of the hooks 14 through an external rope to ensure the stability of the boom 2.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention; those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways of substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. Hydraulic inverted arm davit, characterized by: The invention comprises a base (1), two booms (2) and two hydraulic rods (3), wherein the two hydraulic rods (3) are rotatably arranged on the base (1), the two booms (2) correspond to the two hydraulic rods (3) respectively, and the two booms (2) are movably provided with hanging ropes (4), and the two booms (2) each comprise a boom body 1 (21), a boom body 2 (22) and a boom body 3 (23), one end of the boom body 1 (21) is rotatably connected to the base (1), and the other end of the boom body 1 (21) is rotatably connected to the output end of the hydraulic rod (3), and the length of the boom body 1 (21) is greater than the length of the boom body 2 (22) and the length of the boom body 3 (23).

2. The hydraulic inverted arm davit according to claim 1, characterized in that: The boom body one (21) and the boom body three (23) are both arranged at an incline, and the boom body two (22) is arranged in a vertical direction.

3. The hydraulic inverted arm davit according to claim 2, characterized in that: The length of the boom body three (23) is greater than the length of the boom body two (22).

4. The hydraulic inverted arm davit according to claim 1, characterized in that: The second boom body (22) is provided with a hydraulic support rod (5) for supporting the workboat.

5. The hydraulic inverted arm davit according to claim 4, characterized in that: The end of the hydraulic support rod (5) is detachably connected to a shock-absorbing stopper (6).

6. The hydraulic inverted arm davit according to claim 1, characterized in that: The base (1) is provided with a mounting seat 1 (7), and the end of the hydraulic rod (3) is rotatably connected to the mounting seat 1 (7); the boom body 1 (21) is provided with a mounting seat 2 (8), and the output end of the hydraulic rod (3) is rotatably connected to the mounting seat 2 (8).

7. The hydraulic inverted arm davit according to claim 1, characterized in that: A rotating wheel one (9) is rotatably arranged on the end of the boom body one (21), a rotating wheel two (10) is rotatably arranged between the boom body one (21) and the boom body two (22), a rotating wheel three (11) is rotatably arranged between the boom body two (22) and the boom body three (23), a rotating wheel four (12) is rotatably arranged at the end of the boom body three (23), the hanging rope (4) is wound around the rotating wheel one (9), and the hanging rope (4) is passed around the rotating wheel two (10), the rotating wheel three (11) and the rotating wheel four (12) in sequence.

8. The hydraulic inverted arm davit according to claim 1, characterized in that: The boom (2) is provided with a boat mooring device (13), the boat mooring device (13) comprising a mooring rope (131), a positioning wheel (132), a positioning block (133) and a fixing block (134), the positioning block (133) being connected to the base (1), the fixing block (134) being arranged on the boom body three (23), the positioning block (133) being arranged on the boom body one (21), one end of the mooring rope (131) being connected to the positioning block (133), the mooring rope (131) passing around the positioning wheel (132) and being connected to the working boat, and the other end of the mooring rope (131) being connected to the fixing block (134).

9. The hydraulic inverted arm davit according to claim 1, characterized in that: A plurality of hooks (14) are arranged on the third boom body (23), and the plurality of hooks (14) are evenly distributed along the length direction of the third boom body (23).

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