Foldable vertical ladder protection device for ship

Abstract

The invention relates to a foldable vertical ladder protection device for a ship. The foldable vertical ladder protection device comprises a pin shaft with threads at two ends, a nut and a connecting plate with a pin shaft hole, the two ends of the vertical ladder protection ring are respectively connected with a plane connecting plate, and the plane connecting plates are fixed on the connecting plates with the pin shaft holes through pin shafts and nuts; eye plates are fixedly arranged on the vertical ladder protection rings, and the eye plates between the vertically adjacent vertical ladder protection rings are detachably connected through a plurality of steel wire ropes; when the space occupied by the vertical ladder protection ring needs to be vacated, the steel wire rope is detached, the nut is loosened, the vertical ladder protection ring and the plane connecting plate rotate around the pin shaft together, the vertical ladder protection ring is turned to be parallel to the vertical ladder, and the nut is tightened again. The protection ring of the vertical ladder can be conveniently removed without being detached under the condition that the occupied space needs to be vacated, the space requirement is considered, and the safety of sailors is guaranteed; the steel wire ropes are used for replacing conventional vertical steel plate blocking strips, so that the weight of the vertical ladder protection device is reduced, and the dismounting is convenient.

Description

Technical Field

[0001] The invention relates to a foldable straight ladder protection device for ships, belonging to the technical field of ship straight ladder channel design. Background Art

[0002] The vertical ladder is a commonly used vertical passage facility on ships. For a long vertical ladder, a protective ring is usually added when the vertical ladder is more than 2 meters high to prevent the crew from falling and protect the safety of the crew. Conventional vertical ladder protection rings are as follows: Figure 1 and Figure 2 shown.

[0003] Conventional ladder protection rings take up a certain amount of space and cannot be installed in areas on board that have limited space. For example, a car ship has air draft restrictions. When the mast is lowered, the ladder on the mast will easily exceed the air draft height limit if a protection ring is installed. Figure 3 shown.

[0004] To address this problem, the prior art has two processing methods:

[0005] The first method: the vertical ladder on the mast has no protection. This method has the following problems: the crew has no protection device when climbing the vertical ladder, which is not good for the safety of the crew;

[0006] The second method is to lower the height of the fixed part of the mast and reserve space for the straight ladder protection circle on the collapsible part of the mast. This method has the following problems: first, the weight of the collapsible part increases, which is not conducive to the operation of collapsing the collapsible part; second, this method is more likely to cause vibration of the mast. Summary of the invention

[0007] The purpose of the present invention is to provide a foldable straight ladder protection device for ships to solve the above technical problems.

[0008] A foldable straight ladder protection device for ships, comprising a straight ladder protection ring 2, a pin shaft 7 with threads at both ends, a nut 5, and a connecting plate with a pin shaft hole; the two ends of the straight ladder protection ring 2 are respectively connected to a plane connecting plate 3, and the plane connecting plate 3 is fixed to the connecting plate with the pin shaft hole through the pin shaft 7 and the nut 5; an eye plate 8 is fixedly provided on the upper part of the straight ladder protection ring 2, and the eye plates 8 between the upper and lower adjacent straight ladder protection rings 2 are detachably connected using a plurality of steel wire ropes 9; when the space occupied by the straight ladder protection ring 2 needs to be vacated, the steel wire rope 9 is removed, the nut is loosened, and the straight ladder protection ring 2 is rotated together with the plane connecting plate 3 around the pin shaft 7, so that the straight ladder protection ring 2 is flipped to a state parallel to the straight ladder 1, and the nut 5 is tightened again.

[0009] Preferably, both ends of the steel wire rope 9 are provided with detachable lock buckles, which are connected to the eye plate 8 via the lock buckles.

[0010] Preferably, the connecting plate with the pin shaft hole is a right-angle connecting plate 4 , one end of which is fixed to the side of the ladder 1 , and the other end of which is fixed to the pin shaft 7 via the nut 5 .

[0011] Preferably, the steel wire ropes 9 have three rows in the vertical direction and are evenly arranged.

[0012] Preferably, it also includes a gasket 6, and the gasket 6 is directly matched with the nut 5.

[0013] Preferably, the vertical ladder 1 is installed on a mast of a ship.

[0014] The beneficial effects of the present invention are:

[0015] 1) The ladder protection ring can be easily removed without disassembly when it is necessary to free up space, thus taking into account both space requirements and crew safety.

[0016] 2) Using steel wire ropes to replace conventional vertical steel plate bars reduces the weight of the vertical ladder protection device and makes it easy to disassemble;

[0017] 3) The wire rope and the protective ring are easy to replace, which extends the service life of the vertical ladder protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of a ship straight ladder protection device in the prior art.

[0019] Figure 2 The invention is a schematic diagram of the installation of a ship vertical ladder protection device in the prior art.

[0020] Figure 3 It is a schematic diagram of the background art that when the light mast is laid down, if a protective ring is installed on the straight ladder on the light mast, it is easy to exceed the height limit requirement of air draft.

[0021] Figure 4 It is a top view of the foldable straight ladder protection device for ships of the present invention.

[0022] Figure 5 yes Figure 4 A zoomed-in view of node 1 in .

[0023] Figure 6 The invention is a schematic diagram of the installation of a foldable straight ladder protection device for ships.

[0024] Figure 7 This is a schematic diagram of the installation of the vertical ladder protection ring after it has been flipped and folded.

[0025] In the figure, 1. straight ladder, 2. straight ladder protection ring, 3. flat connecting plate, 4. right-angle connecting plate, 5. nut, 6. gasket, 7. pin shaft, 8. eye plate, 9. wire rope. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] See also Figure 4-7 A foldable straight ladder protection device for ships, comprising a straight ladder protection ring 2, a pin shaft 7 with threads at both ends, a nut 5, and a connecting plate with a pin shaft hole; the two ends of the straight ladder protection ring 2 are respectively connected to a plane connecting plate 3, and the plane connecting plate 3 is fixed to the connecting plate with the pin shaft hole through the pin shaft 7 and the nut 5; an eye plate 8 is fixed on the upper part of the straight ladder protection ring 2, and the eye plates 8 between the upper and lower adjacent straight ladder protection rings 2 are detachably connected using a plurality of steel wire ropes 9; when the space occupied by the straight ladder protection ring 2 needs to be vacated, the steel wire rope 9 is removed, the nut is loosened, and the straight ladder protection ring 2 is rotated together with the plane connecting plate 3 around the pin shaft 7, so that the straight ladder protection ring 2 is flipped to a state parallel to the straight ladder 1, and the nut 5 is tightened again.

[0028] See also Figure 6 The two ends of the steel wire rope 9 are provided with detachable lock buckles, which are connected to the eye plate 8 through the lock buckles. The attached figure specifically draws the lock buckles.

[0029] See also Figure 4 The connecting plate with the pin shaft hole is a right-angle connecting plate 4, one end of which is fixed to the side of the ladder 1, and the other end is fixed to the pin shaft 7 through the nut 5.

[0030] See also Figure 6 The steel wire ropes 9 have 3 rows in the vertical direction and are evenly arranged. Two rows are drawn in the figure, but one row is actually blocked.

[0031] See also Figure 5 , and also includes a gasket 6, wherein the gasket 6 directly cooperates with the nut 5.

[0032] See also Figure 6-7 , the straight ladder 1 is installed on the mast of the ship.

[0033] The invention enables the ladder protection ring to be conveniently removed without disassembly when the occupied space needs to be vacated, taking into account both the space requirement and the safety of the crew. The steel wire rope is used to replace the conventional vertical steel plate bar, which reduces the weight of the ladder protection device and makes it easy to disassemble; the steel wire rope and the protection ring are easy to replace, which prolongs the service life of the ladder protection device.

[0034] Figure 6This is the state of the protection ring when it is in normal use. When the ladder is not in use by anyone and the space where the ladder protection ring is located cannot meet certain requirements, first untie the wire rope 9 from the eye plate 8, loosen the nuts on both sides of the pin shaft, and when the pin shaft can rotate normally, rotate the protection ring to a direction parallel to the ladder, and then tighten the nuts on both sides of the pin shaft. Figure 7 shown.

[0035] The key points of the present invention are:

[0036] 1. Use the rotation principle of the pin shaft to rotate the ladder protection ring so that the protection ring can protect the crew's safety when it is deployed and does not occupy the back space of the ladder when it is stored;

[0037] 2. The wire rope protects the crew's back safety when it is taut and is easy to disassemble.

[0038] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A foldable ladder protection device for a ship, comprising a ladder protection ring (2), characterized in that: It comprises a pin shaft (7) with threads at both ends, a nut (5), and a connecting plate with a pin shaft hole; The two ends of the straight ladder protection ring (2) are respectively connected to a plane connecting plate (3), and the plane connecting plate (3) is fixed to the connecting plate with the pin hole through a pin shaft (7) and a nut (5); An eye plate (8) is fixedly provided on the upper part of the vertical ladder protection ring (2), and the eye plates (8) between the vertical ladder protection rings (2) adjacent to each other are detachably connected by a plurality of steel wire ropes (9); when the space occupied by the vertical ladder protection ring (2) needs to be vacated, the steel wire ropes (9) are removed, the nuts are loosened, and the vertical ladder protection ring (2) together with the plane connecting plate (3) are rotated around the pin shaft (7) to turn the vertical ladder protection ring (2) to a state parallel to the vertical ladder (1), and the nuts (5) are tightened again.

2. The foldable straight ladder protection device for ships according to claim 1, characterized in that: Both ends of the steel wire rope (9) are provided with detachable lock buckles, which are connected to the eye plate (8) via the lock buckles.

3. The foldable straight ladder protection device for ships according to claim 1, characterized in that: The connecting plate with the pin shaft hole is a right-angle connecting plate (4), one end of the right-angle connecting plate (4) is fixed to the side of the straight ladder (1), and the other end is fixed to the pin shaft (7) through the nut (5).

4. The foldable straight ladder protection device for ships according to claim 1, characterized in that: The steel wire ropes (9) have three rows in the vertical direction and are evenly arranged.

5. The foldable straight ladder protection device for ships according to claim 1, characterized in that: It also includes a gasket (6) which directly cooperates with the nut (5).

6. The foldable straight ladder protection device for a ship according to claim 1, characterized in that: The vertical ladder (1) is installed on the mast of the ship.

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