Outboard release device of free-falling lifeboat

Abstract

The invention relates to a lifeboat, in particular to an out-of-boat release device for a free-falling lifeboat. A releasing device outside a free-falling lifeboat comprises a releasing shifting fork and a connecting plug, the releasing shifting fork is rotationally connected to a lifeboat body, one end of the releasing shifting fork is hinged to the connecting plug through a pin shaft, and the other end of the releasing shifting fork is provided with a releasing rod driving the releasing shifting fork to rotate; the connecting plug is connected with a flexible shaft which is connected with a swing rod. One end of the swing rod is hinged to the flexible shaft, the other end of the swing rod is hinged to a lifting hook starting shaft, the flexible shaft enables the swing rod to swing to drive the lifting hook starting shaft to rotate, and the lifeboat freely falls from the lifting hook. The lifeboat can be released only by rotating the release rod outside the lifeboat by a technician, and the operation is simple and safe; and the telescopic piece is separated from the swing rod, so that the next use is facilitated.

Description

Technical Field

[0001] The present invention relates to a lifeboat, in particular to an outboard releasing device for a free-fall lifeboat. Background Art

[0002] Currently, to meet the need for external release, free-fall lifeboats have a process hole drilled in the back of the boat and a pull rope connected to the internal release device. A person outside the boat pulls the pull rope to activate the internal release device, causing the free-fall lifeboat to land. However, there are the following problems: the existing external release method is cumbersome to operate, requiring drilling a hole in the boat, which then needs to be sealed, making subsequent handling difficult. The existing external release method is relatively dangerous, as the operator must let go immediately upon release, otherwise there is a risk of being dragged into the water. This method requires the operator to find the correct release angle outside the boat, and if the angle is not accurate, it is difficult to release, making the operation difficult. In addition, this method is a temporary device and needs to be reinstalled for each operation. Summary of the Invention

[0003] The present invention provides an outboard release device for a free-fall lifeboat, which solves the problem that the current release operation of a lifeboat is difficult and dangerous.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A free-fall lifeboat overboard release device comprises a release fork and a connecting plug, wherein the release fork is rotatably connected to the hull, one end of the release fork is hinged to the connecting plug via a pin, and the other end of the release fork is provided with a release rod for driving the release fork to rotate; the connecting plug is connected to a flexible shaft, and the flexible shaft is connected to a rocker arm; one end of the rocker arm is hinged to the flexible shaft, and the other end is hinged to a hook starting shaft, and the flexible shaft causes the rocker arm to swing and drives the hook starting shaft to rotate, so that the lifeboat freely falls from the hook.

[0006] Furthermore, the flexible shaft includes a flexible part, a fixed part and a telescopic part, one end of the flexible part is connected to the telescopic part, and the other end is connected to the connecting plug; the fixed part is sleeved on the outside of the telescopic part, and the flexible part drives the telescopic part to move in the inner cavity of the fixed part; the telescopic part is hinged to the rocker arm.

[0007] Furthermore, a protective box is provided on the exterior of the release fork, a through hole is opened on the protective box, and the diameter of the through hole is larger than the diameter of the release rod.

[0008] Furthermore, the release fork includes a main body and shift teeth, and the shift teeth are symmetrically arranged on the outer wall of the main body; the release rod is provided with a notch adapted to the shift teeth, and the shift teeth are placed in the notch, and rotating the release rod drives the release fork to rotate relative to the hull.

[0009] Furthermore, the telescopic member is provided with a plug hole, the rocker arm is provided with a hinge hole, the hinge shaft passes through the plug hole and the hinge hole in sequence, so that the telescopic member and the rocker arm are hinged; the hinge shaft is provided with a limit hole, and a cotter pin is provided in the limit hole.

[0010] Furthermore, the fixing member is fixed to the hull via a fixing frame.

[0011] Furthermore, three rocker arms are provided and are evenly distributed along the circumference of the hook start shaft. The telescopic member is connected to one of the rocker arms. The telescopic member is extended and retracted to change the position of the rocker arm and to rotate the hook start shaft.

[0012] Furthermore, the flexible member is a hose.

[0013] By adopting the above technical solution, the beneficial technical effects of the present invention are:

[0014] The present invention provides an off-board release device for a free-fall lifeboat. A technician controls the rotation of a release lever from outside the boat, which drives a connecting plug to rotate relative to the boat body. A flexible member connected to the connecting plug then drives a telescopic member to move within a fixed member. The movement of the telescopic member simultaneously drives the hook's activation shaft to rotate via a rocker arm. This rotation of the hook's activation shaft releases the hook's limiter, allowing the unmanned boat to fall off the hook and complete the lifeboat's release. This invention allows the lifeboat to be released simply by rotating the release lever from outside the boat, making it simple and safe to operate. Furthermore, the telescopic member is separated from the rocker arm, making it easier to use the lifeboat the next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an overboard release mechanism for a free-fall lifeboat.

[0016] Figure 2 This is a schematic diagram of the initial state of the connection between the flexible shaft and the connecting plug.

[0017] Figure 3 This is a schematic diagram of the state after the flexible shaft and the connecting plug are connected and rotated.

[0018] Figure 4 Schematic diagram of the release fork and connecting plug.

[0019] Figure 5 Schematic diagram of the protection box.

[0020] Figure 6 Schematic diagram of the release lever.

[0021] Figure 7 for Figure 6 Cross-section view at AA in the middle.

[0022] Figure 8 This is a schematic diagram of the connection between the telescopic part and the hook starting shaft.

[0023] Figure 9 This is a schematic diagram of the connection between the hook starting shaft and the hook. DETAILED DESCRIPTION

[0024] like Figure 1 and Figure 4 As shown, a free-fall lifeboat overboard release device includes a release fork 1 and a connecting plug 2. The release fork 1 is rotatably connected to the hull, one end of the release fork 1 is hinged to the connecting plug 2 via a pin, and the other end of the release fork 1 is provided with a release rod 3 for driving the same to rotate; the connecting plug 2 is connected to a flexible shaft 4, and the flexible shaft 4 is connected to a rocker arm 5; one end of the rocker arm 5 is hinged to the flexible shaft 4, and the other end is hinged to a hook starting shaft 6. The flexible shaft 4 causes the rocker arm 5 to swing and drives the hook starting shaft 6 to rotate, so that the lifeboat freely falls from the hook. The technician controls the release rod 3 to be inserted into the release fork 1, that is, the notch on the release rod 3 is placed on the teeth of the release fork 1. The technician applies torque through the release rod 3 to rotate the release fork 1. As the release fork 1 rotates, the connecting plug 2 hinged to the release fork 1 will rotate in the same direction as the release fork 1. The rotation of the release fork 1 realizes the extension and retraction of the telescopic part in the fixed part. After the telescopic part moves in the fixed part, the rocker arm 5 connected to the telescopic part will rotate compared to the hook starting shaft 6, and make the hook starting shaft 6 rotate synchronously. As the hook starting shaft 6 rotates, the hook is opened, the limit of the hook on the unmanned boat is released, and the release action of the lifeboat is completed.

[0025] like Figure 2 and Figure 3 As shown, the flexible shaft 4 includes a flexible member 41, a fixed member 42, and a telescopic member 43. One end of the flexible member 41 is connected to the telescopic member 43, and the other end is sleeved with a sleeve and hinged to the connecting plug 2. The fixed member 42 is sleeved on the outside of the telescopic member 43, and the flexible member 41 drives the telescopic member 43 to move within the inner cavity of the fixed member 42. The telescopic member 43 is hinged to the rocker 5. The flexible member 41 is a hose. The fixed member 42 is fixed to the hull via a fixing bracket. When the release fork 1 rotates, the connecting plug 2 connected to the release fork 1 rotates synchronously. The hose connected to the connecting plug 2 drives the telescopic member 43 to move within the inner cavity of the fixed member 42. The telescopic member 43 drives the rocker 5 to rotate and causes the hook activation shaft 6 to rotate synchronously. The rotation of the hook activation shaft 6 causes the hook to open, releasing the hook from the unmanned boat and completing the release of the lifeboat.

[0026] like Figures 5 to 7 As shown, the release fork 1 is provided with a protective box 11 on the outside, and a through hole is opened on the protective box 11. The diameter of the through hole is larger than the diameter of the release rod 3. The technician controls the release rod 3 to pass through the protective box 11 and plug it into the release fork 1 to realize the rotation of the release fork 1. The protective box 11 is used to protect the release fork 1 and extend the service life of the release fork 1.

[0027] The release fork 1 includes a main body 12 and a shift tooth 13, and the shift tooth 13 is symmetrically arranged on the outer wall of the main body 12; the release rod 3 is provided with a notch 14 adapted to the shift tooth 13, and the shift tooth 13 is placed in the notch 14. Rotating the release rod 3 drives the release fork 1 to rotate relative to the hull.

[0028] like Figure 8 and Figure 9 As shown, the telescopic member 43 is provided with an insertion hole, and the rocker arm 5 is provided with a hinge hole. The hinge shaft passes through the insertion hole and the hinge hole in sequence, thereby articulating the telescopic member 43 to the rocker arm 5. The hinge shaft is provided with a limit hole, and a cotter pin is installed in the limit hole. There are three rocker arms 5, evenly distributed along the circumference of the hook activation shaft 6. The telescopic member 43 is connected to one of the rocker arms 5. The extension and retraction of the telescopic member 43 causes the rocker arm 5 to change position, thereby rotating the hook activation shaft 6. The telescopic member 43 is connected to a rocker arm 5 at an appropriate angle via the hinge shaft. As the telescopic member 43 extends and retracts, the rocker arm 5 connected to the telescopic member 43 swings 70°-80°. After the rocker arm 5 rotates, the hook activation shaft 6 moves outward, freeing the end of the hook from the restraint, and the hook can rotate to release the lifeboat; the lifeboat is then released from the hook.

[0029] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A free-fall lifeboat overboard release device, characterized in that: It includes a release fork and a connecting plug. The release fork is rotatably connected to the hull. One end of the release fork is hinged to the connecting plug through a pin shaft, and the other end of the release fork is provided with a release rod that drives it to rotate; the connecting plug is connected to a rocker arm through a flexible shaft; the rocker arm is hinged to the hook starting shaft. The flexible shaft causes the rocker arm to swing and drives the hook starting shaft to rotate, so that the lifeboat can freely drop from the hook.

2. A free-fall lifeboat overboard release device according to claim 1, characterized in that: The flexible shaft includes a flexible part, a fixed part and a telescopic part. One end of the flexible part is connected to the telescopic part, and the other end is connected to the connecting plug; the fixed part is sleeved on the outside of the telescopic part, and the flexible part drives the telescopic part to move in the inner cavity of the fixed part; the telescopic part is hinged to the rocker arm.

3. The free-fall lifeboat overboard release device according to claim 1, characterized in that: The release fork is externally sleeved with a protection box, which is provided with a through hole, the diameter of which is larger than the diameter of the release rod.

4. The free-fall lifeboat overboard release device according to claim 1, characterized in that: The release fork includes a main body and shift teeth, which are symmetrically arranged on the outer wall of the main body; the release rod is provided with a notch adapted to the shift teeth, and the shift teeth are placed in the notch. Rotating the release rod drives the release fork to rotate relative to the hull.

5. The free-fall lifeboat overboard release device according to claim 2, characterized in that: The telescopic member is provided with a plug hole, the rocker arm is provided with a hinge hole, the hinge shaft passes through the plug hole and the hinge hole in sequence, so that the telescopic member and the rocker arm are hinged; the hinge shaft is provided with a limit hole, and a cotter pin is provided in the limit hole.

6. The free-fall lifeboat overboard release device according to claim 2, characterized in that: The fixing piece is fixed on the hull via a fixing frame.

7. The free-fall lifeboat overboard release device according to claim 2, characterized in that: There are three swing rods and they are evenly distributed along the circumference of the hook starting shaft. The telescopic member is connected to one of the swing rods. The telescopic member is extended and retracted to change the position of the swing rod and rotate the hook starting shaft.

8. The free-fall lifeboat overboard release device according to claim 1, characterized in that: The flexible member is a hose.

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