A method for arranging a spiral staircase railing and a spiral staircase railing

Abstract

An embodiment of the present application provides a method for arranging a spiral staircase fence and a spiral staircase fence. The spiral staircase fence includes a horizontal fence and an inclined fence. The arrangement method includes: erecting a first straight ladder connecting the hatch and the top platform of the cargo hold through the hatch cover; arranging a second straight ladder connecting the top platform of the cargo hold and the intermediate platform of the cargo hold through the top platform; arranging a spiral staircase along the trough-shaped wall of the cargo hold through the intermediate platform of the cargo hold, and the spiral staircase connecting the intermediate platform of the cargo hold and the bottom platform of the cargo hold; arranging an inclined fence corresponding to the outer side of the spiral staircase relative to the trough-shaped wall of the cargo hold; enclosing a horizontal fence corresponding to the bottom platform of the cargo hold; arranging a third straight ladder connecting the bottom platform of the cargo hold and the bottom of the cargo hold through the bottom platform of the cargo hold.

Description

Technical Field

[0001] This application relates to the technical field of ships, and particularly to a method for arranging a spiral ladder fence and a spiral ladder fence. Background Art

[0002] In order to meet the requirements of Australian ports for the cargo hold passage of ships, at least two passages should be provided in one cargo hold. The two passages should be as far apart as possible and arranged diagonally. One is a completely straight ladder passage, which is composed of straight ladders not exceeding 6m arranged in a staggered manner. The other has straight ladders at the deck entrance and the bottom of the cargo hold, and a spiral ladder is required in the middle, and a platform is used to connect the two ladders at the junction. A spiral ladder, also known as a helical ladder, has all steps arranged equidistantly and at equal angles along a central column downward. In order to meet the strength requirements of the cargo holds of bulk carriers, the bulkheads between the cargo holds are designed as trough-shaped bulkhead structures, and the spiral ladders are arranged in the trough-shaped bulkheads. However, due to the large size of the spiral ladders, generally part of them is inside the trough-shaped bulkheads and part is outside. The spiral ladder structure protruding outside the trough-shaped bulkhead is easily damaged by the extrusion of goods. And when personnel walk through the spiral ladder inside the trough-shaped bulkhead, the side is a steel wall, which is relatively safe. When walking outside the trough-shaped bulkhead, the side is an empty cargo hold with a large drop, which creates a great psychological pressure on the climbing personnel and there is a risk of falling. Currently, bulk carriers generally use a steel pipe guard cage structure to enclose the entire spiral ladder range from top to bottom, which is heavy and not aesthetically pleasing. Summary of the Invention

[0003] In a first aspect, an embodiment of the present application provides a method for arranging a spiral ladder fence. The spiral ladder fence includes a horizontal fence and an inclined fence. The method includes:

[0004] Install a first straight ladder connecting the hatch cover and the top platform of the cargo hold through the hatch cover;

[0005] Install a second straight ladder connecting the top platform of the cargo hold and the middle platform of the cargo hold through the top platform;

[0006] Install a spiral ladder along the trough-shaped bulkhead of the cargo hold through the middle platform of the cargo hold. The spiral ladder connects the middle platform of the cargo hold and the bottom platform of the cargo hold;

[0007] Set the inclined fence corresponding to the outside of the spiral ladder relative to the trough-shaped bulkhead of the cargo hold;

[0008] Surround the horizontal fence corresponding to the bottom platform of the cargo hold;

[0009] Install a third straight ladder connecting the bottom platform of the cargo hold and the bottom of the cargo hold through the bottom platform of the cargo hold.

[0010] In some alternative embodiments, the third straight ladder is a strengthened straight ladder.

[0011] In some alternative embodiments, the materials of the horizontal fence and the inclined fence include metal round tubes and metal backing plates.

[0012] In some alternative embodiments, the spiral staircase is a stepped ladder that spirals up and down.

[0013] In some alternative embodiments, the spiral staircase spirals counterclockwise or clockwise.

[0014] In some alternative embodiments, at least a part of the bottom platform of the cargo hold protrudes relative to the trough-shaped wall of the cargo hold.

[0015] In some alternative embodiments, the horizontal fence includes two first vertical columns, two first horizontal bars, and four first struts. The two first horizontal bars and the two first vertical columns are perpendicularly connected to form a rectangular structure. The four first struts are respectively perpendicular to the two first vertical columns in pairs and correspond to the two ends of the two first horizontal bars. The four first struts form a flared shape on both sides. A backing plate is provided at the end of the first strut, and sealing plates are provided at the upper and lower ends of the first vertical column.

[0016] In some alternative embodiments, the inclined fence includes two second vertical columns, two second horizontal bars, and four second struts. The two second horizontal bars are respectively connected to the two second vertical columns to form a non-rectangular parallelogram structure. The inclination angle of the second horizontal bar corresponds to that of the spiral staircase. The four second struts form a flared shape on both sides. A backing plate is provided at the end of the second strut, and sealing plates are provided at the upper and lower ends of the second vertical column.

[0017] In a second aspect, an embodiment of the present application provides a spiral staircase fence, which is characterized by including a horizontal fence and an inclined fence. The horizontal fence can be used to enclose the bottom platform of the cargo hold, and the inclined fence can be used to be arranged on the outer side of the spiral staircase relative to the trough-shaped wall of the cargo hold;

[0018] Wherein, the bottom platform of the cargo hold is connected to the bottom of the cargo hold through a third straight ladder. The spiral staircase is arranged along the trough-shaped wall of the cargo hold. The spiral staircase is connected to the intermediate platform of the cargo hold and the bottom platform of the cargo hold. The intermediate platform of the cargo hold is connected to the top platform of the cargo hold through a second straight ladder. The top platform of the cargo hold is connected to the hatch cover through a first straight ladder.

[0019] In some alternative embodiments, the horizontal fence includes two first vertical columns, two first horizontal bars, and four first struts. The two first horizontal bars and the two first vertical columns are perpendicularly connected to form a rectangular structure. The four first struts are respectively perpendicular to the two first vertical columns in pairs and correspond to the two ends of the two first horizontal bars. The included angle between the adjacent first horizontal bar and the first strut is greater than 90 degrees. A backing plate is provided at the end of the first strut, and sealing plates are provided at the upper and lower ends of the first vertical column;

[0020] The inclined fence includes two second vertical columns, two second cross bars and four second struts. The two second cross bars are respectively connected to the two second vertical columns to form a non-rectangular parallelogram structure. The inclination angle of the second cross bar corresponds to that of the spiral ladder. The four second struts form a flared shape on both sides. A backing plate is provided at the end of the second strut, and sealing plates are provided at the upper and lower ends of the second vertical column.

[0021] The purpose of this application is to provide a spiral ladder fence and a layout method thereof installed outside the spiral ladder on the trough-shaped wall of the cargo hold of an Australian cargo hold, which is used to protect the safety of personnel and prevent the spiral ladder and railing protruding outside the trough-shaped wall from being damaged by the extrusion of the cargo in the cargo hold. Compared with the prior art, the above-mentioned embodiments of this application have the following advantages: reducing the weight of the fence, having a simple structure and being convenient for on-site fabrication; having good safety performance; having universality and being suitable for bulk carriers of various tonnages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings generally illustrate, by way of example and not limitation, the various embodiments discussed herein.

[0023] Figure 1 It is a layout schematic diagram of a spiral ladder fence on a cargo ship;

[0024] Figure 2 It is a top view of the installation node of the horizontal fence of a spiral ladder fence;

[0025] Figure 3 It is a top view of the installation node of the inclined fence of a spiral ladder fence;

[0026] Figures 4A to 4D It is a side view, front view, top view and oblique view of the horizontal fence of a spiral ladder fence;

[0027] Figures 5A to 5D It is a side view, front view, top view and oblique view of the inclined fence of a spiral ladder fence.

[0028] Symbol Description:

[0029] 11 - Horizontal fence; 12 - Inclined fence; 13 - First upright column; 14 - First crossbar; 15 - First strut; 16 - Second upright column; 17 - Second crossbar; 18 - Second strut; 19 - Base plate; 20 - Sealing plate; 21 - Hatch cover; 22 - Top platform of cargo hold; 23 - First straight ladder; 24 - Intermediate platform of cargo hold; 25 - Second straight ladder; 26 - Corrugated wall of cargo hold; 27 - Spiral ladder; 28 - Bottom platform of cargo hold; 29 - Bottom of cargo hold; 30 - Third straight ladder; L - Width of notch of corrugated wall of cargo hold; L1 - Horizontal distance between first struts on both sides; L2 - Horizontal distance between ends of first struts on both sides; L3 - Horizontal distance between second struts on both sides; L4 - Horizontal distance between ends of second struts on both sides; h1 - Vertical distance from first crossbar to plane where ends of first struts on both sides are located; h2 - Vertical distance from second crossbar to plane where ends of second struts on both sides are located; b1 - Vertical distance between two first struts on the same side; b2 - Vertical distance between two second struts on the same side; a - Inclination angle of second crossbar. Detailed implementation manners

[0030] In order to more comprehensively understand the features and technical content of the embodiments of the present application, the implementation of the embodiments of the present application will be elaborated in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present application.

[0031] In the description of the embodiments of the present application, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be the internal connection of two components, can be directly connected, or can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms can be understood according to specific circumstances.

[0032] It should be noted that the terms "first / second / third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged in a specific order or sequence under allowable circumstances. It should be understood that the objects distinguished by "first / second / third" can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0033] Figure 1 It is a schematic layout diagram of a spiral ladder fence on a cargo ship.

[0034] The embodiments of the present application provide a method for arranging a spiral ladder fence. The spiral ladder fence includes a horizontal fence 11 and an inclined fence 12, and its layout effect is as Figure 1 shown. The method includes the following steps 101 to step 106.

[0035] Step 101, erect a first straight ladder 23 connecting the hatch cover 21 and the top platform 22 of the cargo hold through the hatch cover 21.

[0036] Step 102: Set up the second straight ladder 25 that connects the top platform 22 of the cargo hold and the middle platform 24 of the cargo hold through the top platform 22.

[0037] Step 103: Set up a spiral ladder 27 along the trough-shaped wall 26 of the cargo hold through the middle platform 24 of the cargo hold. The spiral ladder 27 connects the middle platform 24 of the cargo hold and the bottom platform 28 of the cargo hold.

[0038] In some optional embodiments, the spiral ladder 27 is a spiral up-and-down step ladder. The spiral winding direction of the spiral ladder 27 can be, for example, counterclockwise spiral or clockwise spiral.

[0039] The spiral ladder is a spiral-down step ladder, which makes good use of the space of the trough-shaped wall and saves the space of the cargo hold. When the spiral ladder rotates to the outside of the trough-shaped wall, its structure protruding from the trough-shaped wall is protected by a strong fence structure to prevent damage caused by being squeezed by goods and to protect the safety of personnel at the same time. The structure of the inclined fence only protects the part where personnel pass through on the outside of the spiral ladder, with a simple form and saving a large amount of materials, creating conditions for reducing the weight of the ship.

[0040] Step 104: Set up an inclined fence 12 corresponding to the outside of the spiral ladder 27 relative to the trough-shaped wall 26 of the cargo hold. The structure is as Figure 3 shown.

[0041] Step 105: Surround the bottom platform 28 of the cargo hold with a horizontal fence 11. The structure is as Figure 2 shown.

[0042] In some optional embodiments, at least part of the bottom platform 28 of the cargo hold protrudes relative to the trough-shaped wall 26 of the cargo hold. The horizontal fence 11 is used to protect the bottom platform 28 of the cargo hold.

[0043] Step 106: Set up a third straight ladder 30 that connects the bottom platform 28 of the cargo hold and the bottom 29 of the cargo hold through the bottom platform 28 of the cargo hold.

[0044] Optionally, the third straight ladder 30 is a strengthened straight ladder. The function of the strengthened straight ladder is to prevent damage to the straight ladder during the operation at the bottom of the cargo hold.

[0045] As Figure 2 shown, above the strengthened straight ladder is the bottom platform, and the bottom platform protrudes from the trough-shaped wall structure and is protected by a horizontal fence.

[0046] As Figure 1 shown, enter the top platform of the cargo hold through a small hatch and a straight ladder, design a straight ladder from the top platform to enter the cargo hold and reach the middle platform, use a spiral ladder to connect the middle platform and the bottom platform. Reach the bottom of the cargo hold through a strengthened straight ladder from the bottom platform. The function of the strengthened straight ladder is to prevent damage to the straight ladder during the operation at the bottom of the cargo hold.

[0047] In some alternative embodiments, such as Figures 4A to 4D As shown, the horizontal fence 11 includes two first vertical columns 13, two first crossbars 14, and four first struts 15. The two first crossbars 14 and the two first vertical columns 13 are perpendicularly connected to form a rectangular structure. The four first struts 15 are respectively perpendicular to the two first vertical columns 13 in pairs and correspond to the two ends of the two first crossbars 14. The four first struts 15 form a flared shape on both sides. A backing plate 19 is provided at the end of the first strut 15, and closing plates 20 are provided at the upper and lower ends of the first vertical column 13.

[0048] The horizontal fence 11 is a U-shaped structure, which saves space, reduces stress, and provides effective protection. It is symmetrical with the structure of the cargo hold trough-shaped wall 26, and the form is relatively beautiful. h1 can be slightly larger than the length of the bottom platform 28 of the cargo hold, and the value is about 1 meter. L1 is slightly smaller than the value of L, and the value of L2 is slightly larger than the value of L, forming a flared structure. The height of the b1 value is equal to the height of the railing of the bottom platform, and the common value is about 1.1 meters.

[0049] In some alternative embodiments, such as Figures 5A to 5D As shown, the inclined fence 12 includes two second vertical columns 16, two second crossbars 17, and four second struts 18. The two second crossbars 17 are respectively connected to the two second vertical columns 16 to form a non-rectangular parallelogram structure. The inclination angle of the second crossbar 17 corresponds to the spiral staircase 27. The four second struts 18 form a flared shape on both sides. A backing plate 19 is provided at the end of the second strut 18, and closing plates 20 are provided at the upper and lower ends of the second vertical column 16.

[0050] The structure of the inclined fence 12 is similar to that of the horizontal fence 11. The inclination angle a of the second crossbar 17 corresponds to the spiral staircase 27, which is convenient for effectively protecting the spiral staircase 27. The angle a is determined according to the angle formed by the steps of the spiral staircase. Since the height of the steps of the spiral staircase needs to meet the specification requirements of 250 - 350 mm, the angle formed by the equidistant spiral arrangement downward is in the range of 55° - 65°. It can be selected within this range according to the production design lofting. The position of the entrance of the intermediate platform will determine the different rotation directions of the spiral staircase. In this solution, the entrance of the intermediate platform is on the left, and the spiral staircase rotates counterclockwise downward, so the direction of the inclined fence is higher on the left and lower on the right. If it rotates clockwise downward, it is symmetrically arranged, that is, lower on the left and higher on the right. h2 is equal to h1, L3 is equal to L1, L4 is equal to L2, and b2 is equal to b1.

[0051] Here, the materials of the horizontal fence 11 and the inclined fence 12 include metal round tubes and metal backing plates. Among them, the first vertical column 13, the first crossbar 14, the first strut 15, the second vertical column 16, the second crossbar 17, and the second strut 18 are made of metal round tubes, and the backing plate 19 and the closing plate 20 are made of metal backing plates.

[0052] The backing plate 19 can be used to increase the connection area during welding with the cargo hold wall to improve the welding stability. The cover plate 20 can be used to protect the pipe orifice of the support column, prevent misoperation, and play a role in waterproofing and rust prevention for closing.

[0053] The purpose of this application is to provide a ladder railing and a layout method of the ladder railing installed on the outer side of the channel-shaped wall plate ladder of the Australian cargo hold passage in the cargo hold, which are used to protect the safety of personnel and prevent the ladder and railing on the part of the ladder protruding outside the cargo hold on the outer side of the channel-shaped wall from being damaged by the extrusion of the cargo in the cargo hold. Compared with the prior art, the above embodiments of this application have the following advantages: reducing the weight of the railing, simple structure, and convenient for on-site fabrication; having good safety performance; having universality and being suitable for bulk carriers of various tonnages.

[0054] The above description is only the preferred embodiment of this application and the description of the applied technical principle. Those skilled in the art should understand that the disclosed scope in this application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are mutually replaced with the (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for arranging a spiral staircase railing, characterized in that, The tray ladder railing includes a horizontal railing and an inclined railing, and the method includes: Installing a first straight ladder connecting the hatch and the top platform of the cargo hold through the hatch; Arranging a second straight ladder connecting the top platform of the cargo hold and the middle platform of the cargo hold through the top platform; Arranging a tray ladder along the trough-shaped wall of the cargo hold through the middle platform of the cargo hold, and the tray ladder connecting the middle platform of the cargo hold and the bottom platform of the cargo hold; Arranging the inclined railing corresponding to the outside of the tray ladder relative to the trough-shaped wall of the cargo hold; Enclosing the horizontal railing corresponding to the bottom platform of the cargo hold; Arranging a third straight ladder connecting the bottom platform of the cargo hold and the bottom of the cargo hold through the bottom platform of the cargo hold.

2. The method according to claim 1, characterized in that, The third straight ladder is a strengthened straight ladder.

3. The method according to claim 1, wherein The materials of the horizontal railing and the inclined railing include metal round tubes and metal backing plates.

4. The method according to claim 1, wherein The tray ladder is a stepped ladder with a spiral up and down.

5. The method according to claim 4, wherein The tray ladder is a counterclockwise spiral or a clockwise spiral.

6. The method according to claim 1, wherein At least a part of the bottom platform of the cargo hold protrudes relative to the trough-shaped wall of the cargo hold.

7. The method according to claim 1, characterized in that, The horizontal railing includes two first upright columns, two first cross bars and four first struts. The two first cross bars and the two first upright columns are perpendicularly connected to form a rectangular structure. The four first struts are respectively perpendicular to the two first upright columns in pairs and correspond to the two ends of the two first cross bars. The four first struts form a flared shape on both sides. A backing plate is arranged at the end of the first strut, and sealing plates are arranged at the upper and lower ends of the first upright column.

8. The method according to claim 1, wherein The inclined railing includes two second upright columns, two second cross bars and four second struts. The two second cross bars are respectively connected to the two second upright columns to form a non-rectangular parallelogram structure. The inclination angle of the second cross bar corresponds to the tray ladder. The four second struts form a flared shape on both sides. A backing plate is arranged at the end of the second strut, and sealing plates are arranged at the upper and lower ends of the second upright column.

9. A spiral staircase railing, characterized in that, It includes a horizontal railing and an inclined railing. The horizontal railing can be used to enclose the bottom platform of the cargo hold, and the inclined railing can be used to be arranged corresponding to the outside of the tray ladder relative to the trough-shaped wall of the cargo hold; Wherein, the bottom platform of the cargo hold is connected to the bottom of the cargo hold through a third straight ladder. The tray ladder is arranged along the trough-shaped wall of the cargo hold. The tray ladder connects the middle platform of the cargo hold and the bottom platform of the cargo hold. The middle platform of the cargo hold is connected to the top platform of the cargo hold through a second straight ladder. The top platform of the cargo hold is connected to the hatch through a first straight ladder.

10. The spiral staircase railing according to claim 9, characterized in that, The horizontal railing includes two first upright columns, two first cross bars and four first struts. The two first cross bars and the two first upright columns are perpendicularly connected to form a rectangular structure. The four first struts are respectively perpendicular to the two first upright columns in pairs and correspond to the two ends of the two first cross bars. The included angle between the adjacent first cross bar and the first strut is greater than 90 degrees. A backing plate is arranged at the end of the first strut, and sealing plates are arranged at the upper and lower ends of the first upright column; The inclined fence includes two second columns, two second crossbars and four second struts. The two second crossbars are respectively connected to the two second columns to form a non-rectangular parallelogram structure. The inclination angle of the second crossbar corresponds to that of the spiral ladder. The four second struts form a flared shape on both sides. A backing plate is provided at the end of the second strut, and sealing plates are provided at the upper and lower ends of the second column.

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