A container ship foremast structure

Abstract

This utility model relates to the field of shipbuilding and provides a container ship foremast structure. It includes a mast, a radar platform, and a top platform. The mast comprises a first mast, a second mast, and a third mast. The bottom of the first mast is welded to the second deck, and its middle section is reinforced by welding to the hull structure below the deck via a ring of elbow plates. The bottom of the second mast is welded and fixed to the top of the first mast. The bottom of the third mast is detachably installed on the radar platform or welded to it. The top platform is welded to the top of the third mast. The first section is reinforced through three connections via the main deck, the second deck, and the hull structure, ensuring structural stability and reducing the difficulty of hoisting and welding. The third mast is detachably installed on the radar platform and fixed to the second mast. It can be removed and placed on the deck before passing a bridge, and then hoisted and installed again after passage, solving the height restriction problem of inland waterways.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, specifically to a container ship foremast structure. Background Technology

[0002] With the strong demand in the container shipping market, the trend towards larger container ships is also developing rapidly. As the container ship loading capacity increases, and more and more container ships are adding wind deflectors or windbreaks at the bow to save energy, the height of the foremast is increasing accordingly.

[0003] The foremast of existing container ships is located in the middle of the wave-breaking wall. During installation, cranes and supervisors spend considerable time aligning it with the wave-breaking wall, and extensive welding work is also required, which is both time-consuming and labor-intensive. Furthermore, the foremast is a single unit design; due to its geographical location, a section needs to be cut off before the ship passes under bridges in the Yangtze River channel during relocation, and then reassembled after safe passage, resulting in wasted time. Because it is located close to the lashing bridge at the rear of the mast, the access ladder can only be placed on the side, placing the crew facing the wind and lacking initial safety features. Summary of the Invention

[0004] To address the issues of mooring difficulties caused by bridge height limitations in inland waterway navigation, as well as the installation and stability problems of existing foremast structures, this invention provides a container ship foremast structure.

[0005] The technical solution adopted by this utility model is as follows: a container ship foremast structure, including a mast body, a radar platform, and a top platform. The bottom of the mast body is welded and fixed to the main deck of the container ship. The radar platform is located in the middle of the mast body and a radar is installed on the radar platform. The top platform is located at the top of the mast body and a signal light pole is installed on the top platform. The mast body includes a first mast body, a second mast body, and a third mast body. The bottom of the first mast body is welded to the second deck, and the top of the first mast body extends out of the main deck and is welded and fixed to the main deck. The middle part of the first mast body is reinforced by welding to the hull structure below the deck through a ring of elbow plates. The bottom of the second mast body is welded and fixed to the top of the first mast body. The radar platform is welded and installed on the top of the second mast body. The bottom of the third mast body can be detachably installed on the radar platform or welded to the radar platform. The top platform is welded to the top of the third mast body.

[0006] Furthermore, the mast body is a hollow structure, the first mast body and the second mast body have the same cross-sectional dimensions, and the cross-section of the third mast body gradually decreases from bottom to top.

[0007] Furthermore, a lower access ladder is installed inside the second mast, and safety doors communicating with the lower access ladder are respectively provided at the bottom of the second mast and the bottom of the third mast.

[0008] Furthermore, an upper access ladder is installed on the outer side of the third mast, which connects the radar platform and the top platform. The upper access ladder is located on the rear side of the container ship in the forward direction.

[0009] Furthermore, the second mast is reinforced to the main deck by welding a ring of mast support rods, and a ring of ribs is welded between the bottom of the second mast and the main deck.

[0010] Furthermore, multiple stabilizing eye plates are welded around the top platform, and these stabilizing eye plates are connected to the eye plates on the deck via steel cables.

[0011] Furthermore, a ring of reinforcing flat steel is welded inside the first mast, and each of the reinforcing flat steels extends along the length of the first mast.

[0012] Furthermore, the bottom surface of the top platform is reinforced with the third mast component by a diagonal bracing structure.

[0013] Furthermore, the detachable installation can be a flange and bolt mounting structure or an insert mounting structure.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: The container ship's foremast adopts a three-section split structure. The first section is reinforced by three connections to the main deck, the second deck, and the hull structure, ensuring structural stability, reducing lifting and welding difficulties, and avoiding welding work with the wave-breaking wall. The second section is welded to and reinforced to the first mast section and the main deck through welding and connections of ribs and mast supports, ensuring stability. The radar platform can be prefabricated on top of the second mast and directly lifted on-site, reducing workload. The third mast is detachably installed on the radar platform and fixed to the second mast. It can be removed and placed on the deck before passing the bridge, and then lifted and installed again after passing, solving the height restriction problem of inland waterways. The prefabricated top platform of the third mast is fixed to the deck by a ring of stabilizing plates and steel cables, further improving the stability of the entire mast and preventing swaying. The access ladder is located inside the mast, which can avoid safety accidents caused by external wind during climbing and improve safety. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a side view of the present invention.

[0017] In the diagram: Radar platform 1, top platform 2, first mast 3, second mast 4, third mast 5, main deck 6, second deck 7, elbow plate 8, mast support rod 9, rib plate 10, diagonal bracing structure 11, stabilizing cable eye plate 12, reinforcing flat steel 13, lower access ladder 14, upper access ladder 15. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: like Figure 1 As shown, a container ship foremast structure consists of three parts: the mast body, a radar platform 1, and a top platform 2, which are installed on the main deck at the bow of the container ship. The bottom of the mast body is welded and fixed to the main deck of the container ship. The radar platform 1 is located in the middle of the mast body and is equipped with radar and searchlights. The top platform 2 is located at the top of the mast body and is equipped with signal light poles and searchlights.

[0019] Because the mast is a single structure with a height exceeding 28m above the deck, installation is difficult, bridge height restrictions apply when navigating inland waterways, and it is prone to swaying during navigation. Therefore, this application designs the mast as a three-section structure, consisting of a first mast 3, a second mast 4, and a third mast 5. The first mast 3 extends through the main deck 6 to the second deck 7 and is welded to both the main deck 6 and the second deck 7. The top of the first mast 3 protrudes more than 20mm from the main deck for connection with the second mast 4. The middle section of the first mast 3 is reinforced by welding to the hull structure below the deck via a ring of elbow plates 8 to ensure stability.

[0020] The bottom of the second mast 4 is welded and fixed to the top of the first mast 3. The lower section of the second mast 4 is reinforced by welding to the main deck 6 via a ring of mast support rods 9. A ring of ribs 10 is welded between the bottom of the second mast 4 and the main deck 6, forming a stable connection. The radar platform 1 is prefabricated on the top of the second mast 4 and fixed by welding. The bottom of the third mast 5 can be detachably installed on the radar platform 1 or welded to the radar platform 1. Detachable installation means that the bottom end face of the third mast is fixed to the radar platform via flanges and bolts, or the bottom of the third mast 5 is inserted into the second mast 4 to form an insert-type installation structure. When encountering a bridge with height restrictions, the third mast 5 can be disassembled and hoisted to the main deck 6. After safely passing through, it can be hoisted back and re-welded or reinstalled.

[0021] The top platform 2 is welded to the top of the third mast 5. The bottom surface of the top platform 2 is reinforced with the third mast 5 by the diagonal bracing structure 11. Multiple stabilizing eye plates 12 are welded around the top platform 2. The stabilizing eye plates 12 are connected to the eye plates on the deck by steel cables to further ensure the overall stability and prevent swaying in the storm.

[0022] In this application, the mast body is a hollow structure. The first mast body 3 and the second mast body 4 have the same cross-sectional dimensions, and the cross-section of the third mast body 5 gradually decreases from bottom to top. In order to improve the strength of the mast body, a reinforcing flat steel 13 is welded inside each mast body, and the reinforcing flat steel 13 extends along the length direction of the first mast body 3.

[0023] To prevent accidents caused by wind while personnel are climbing the masts, a lower access ladder 14 is installed inside the second mast 4. Safety doors connected to the lower access ladder are located at the bottom of the second mast 4 and the bottom of the third mast 5. Since the cross-section of the third mast 6 gradually decreases, an upper access ladder 15 is installed on the outside of the third mast 5. The upper access ladder 15 connects the radar platform 1 and the top platform 2, and is located on the rear side of the container ship in the forward direction.

Claims

1. A container ship foremast structure comprising a mast body, a radar platform and a top platform, the bottom of the mast body being welded and fixed to the main deck of the container ship, the radar platform being located in the middle of the mast body, a radar being installed on the radar platform, the top platform being located at the top of the mast body, a signal light column being installed on the top platform, characterized in that, The mast includes a first mast, a second mast, and a third mast. The bottom of the first mast is welded to the second deck, and the top of the first mast extends out of the main deck and is welded and fixed to the main deck. The middle part of the first mast is reinforced by welding to the hull structure below the deck through a ring of elbow plates. The bottom of the second mast is welded and fixed to the top of the first mast. The radar platform is welded and installed on the top of the second mast. The bottom of the third mast can be detachably installed on the radar platform or welded to the radar platform, and the top platform is welded to the top of the third mast.

2. A container ship foremast structure according to claim 1, characterised in that, The mast is a hollow structure. The first and second masts have the same cross-sectional dimensions, while the cross-section of the third mast gradually decreases from bottom to top.

3. A container ship foremast structure according to claim 2, characterised in that, A lower access ladder is installed inside the second mast, and safety doors communicating with the lower access ladder are respectively provided at the bottom of the second mast and the bottom of the third mast.

4. A container ship foremast structure according to claim 3, characterised in that, An upper access ladder is installed on the outer side of the third mast. The upper access ladder connects the radar platform and the top platform and is located on the rear side of the container ship in the forward direction.

5. A container ship foremast structure according to claim 1, wherein The second mast is reinforced to the main deck by welding a ring of mast support rods, and a ring of ribs is welded between the bottom of the second mast and the main deck.

6. A container ship foremast structure according to claim 2, wherein Multiple stabilizing eyeplates are welded around the top platform, and these eyeplates are connected to the eyeplates on the deck via steel cables.

7. A container ship foremast structure according to claim 1, wherein A ring of reinforcing flat steel is welded inside the first mast, and each of the reinforcing flat steels extends along the length of the first mast.

8. A container ship foremast structure according to claim 1, wherein The bottom surface of the top platform is reinforced with the third mast component by a diagonal bracing structure.

9. A container ship foremast structure according to claim 1, wherein The detachable installation can be a flange and bolt mounting structure or an insert mounting structure.

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