Telescopic offshore mobile platform evacuation device

Abstract

A telescopic offshore mobile platform evacuation device is arranged on the side surface of a lifting platform body and comprises a ladder stand fixed section and a ladder stand movable section, the ladder stand fixed section is fixed to a broadside hull outer plate through guide components, and the ladder stand fixed section is provided with a plurality of sets of guide components from top to bottom; the crawling ladder movable section is located between the crawling ladder fixed section and the platform body and connected with the fixed section through a guide component. The crawling ladder is released downwards through the gravity of the crawling ladder, and people on the platform can rapidly evacuate from the platform through the fixed crawling ladder and the movable crawling ladder extending to the water surface when the platform meets the tension condition under the standing working condition. The whole evacuation device does not affect towing, berthing and other operations of the platform, operation is easy, maintenance is convenient, and safe evacuation of personnel under the standing working condition and the floating working condition of the platform can be guaranteed at the same time.

Description

Technical Field

[0001] This invention belongs to the field of marine vessel outfitting equipment design and construction, specifically relating to a telescopic marine mobile platform evacuation device. Background Technology

[0002] According to the requirements of the "Technical Rules for Statutory Inspection of Mobile Platforms at Sea", the platform should be equipped with at least two fixed metal ladders or passages that are far apart from each other and extend from the deck to the water surface, so that when the platform encounters an emergency, the personnel on the platform can quickly evacuate to the water surface through these fixed metal ladders or passages.

[0003] In existing technologies, mobile platforms typically use fixed metal ladders installed on the side of the platform, extending downwards to the water surface. Due to the air gap in the platform when standing (the bottom of the platform is more than 6 meters above the sea surface), the lower end of the metal ladder needs to extend a considerable distance beyond the platform's bottom plate to ensure the safe evacuation of personnel to the water surface. However, when the platform is floating, the metal ladder extending beyond the bottom plate can affect towing, berthing, and other operations. In shallow waters, the metal ladder may run aground and potentially damage underwater facilities such as submarine pipelines, resulting in numerous drawbacks and potential hazards.

[0004] In view of the above, the industry is looking forward to a special platform evacuation device that can ensure the safe evacuation of personnel on the platform when it is lifted and standing, and can also meet the needs of platform towing, berthing and other operations without interference when the platform is floating. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a telescopic evacuation device for a mobile offshore platform. The aim is to ensure the safe evacuation of personnel from the platform when it is standing, while also allowing for uninterrupted towing and berthing operations when the platform is floating. The technical solution employed is as follows:

[0006] A telescopic offshore mobile platform evacuation device is provided. The evacuation device is installed on the side surface of the main body of the lifting platform. The evacuation device includes a fixed ladder section and a movable ladder section. The fixed ladder section is fixed to the hull plate on the side of the hull by guide members. The fixed ladder section is provided with multiple sets of guide members from top to bottom. Each set of guide members has two guide members. The two guide members are symmetrically fixed on both sides of the fixed ladder section. The movable ladder section is located between the fixed ladder section and the main body of the platform.

[0007] The guide component consists of a support rod and an open sleeve. The support rod is placed horizontally and fixed to the vertically placed open sleeve. The open sleeve is a round tube with a vertical opening in its wall.

[0008] The movable section of the ladder slides up and down relative to the fixed section of the ladder via guide components. The two sides of the movable section slide within the slides formed by the guide components. A stop bar is provided at the top of the movable section, and a stop block is provided at the bottom of the fixed section. When the movable section slides down to the bottom of the fixed section, the stop block blocks the stop bar.

[0009] A winch is installed on the deck at the top of the fixed section of the ladder. A first pulley is installed below the winch and next to the bottom of the fixed section of the ladder. A second pulley is installed next to the first pulley and inside the movable section of the ladder. A steel wire rope is wound on the winch. The steel wire rope extends downward and passes around the first and second pulleys in sequence, and is fixed at the bottom of the movable section of the ladder.

[0010] Furthermore, in the aforementioned telescopic mobile offshore platform evacuation device, the first pulley and the second pulley are fixed to the side surface of the platform body.

[0011] Furthermore, in the aforementioned telescopic offshore mobile platform evacuation device, the top of the ladder fixing section is flush with the deck of the platform body.

[0012] Furthermore, the aforementioned telescopic mobile offshore platform evacuation device has a handrail fixed to the deck at the top of the ladder's fixed section.

[0013] Furthermore, in the aforementioned telescopic offshore mobile platform evacuation device, the support rod of the guide component is fixed to the platform body, and the top of the open sleeve is fixed to the ladder fixing section.

[0014] Furthermore, in the above-mentioned telescopic offshore mobile platform evacuation device, each set of guide components has two vertical openings arranged opposite to each other, and the ladder movable section consists of two vertically arranged circular tubes and a ladder plate between the circular tubes. The circular tubes slide inside the inner opening sleeve, and the ladder plate passes through the opening of the opening sleeve.

[0015] Furthermore, in the aforementioned telescopic evacuation device for a mobile offshore platform, an eye plate is fixed at the bottom of the ladder's movable section, and a steel wire rope passes through and is fixed in place by the eye plate.

[0016] This invention discloses a telescopic evacuation device for a mobile offshore platform. Through the combined use of a winch, pulley system, and wire rope, a movable climbing ladder can slide and extend up and down along the track of an open sleeve. In case of emergency while the platform is standing, personnel on the platform can quickly evacuate using both the fixed climbing ladder and the movable climbing ladder extending to the water surface. When the platform is floating, the movable climbing ladder can be retracted upwards above the platform's bottom plate, ensuring that the entire evacuation device does not interfere with platform towing, berthing, or other operations.

[0017] This invention is simple to operate and easy to maintain. The movable climbing ladder can be quickly lowered and retrieved. In case of an emergency while the platform is floating, personnel can quickly evacuate to the water surface using only the fixed climbing ladder. Therefore, this invention can ensure the safe evacuation of personnel in both standing and floating conditions. Attached Figure Description

[0018] Figure 1 This is a perspective view illustrating the installation of the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 3 This is a side view of the structure of the present invention;

[0021] Figure 4 This is a structural diagram showing the lowering of the ladder's movable section;

[0022] Figure 5 yes Figure 4 Enlarged view of the area within the Chinese square frame;

[0023] Figure 6 This is a schematic diagram showing the connection between the eye plate and the wire rope;

[0024] Figure 7 This is a schematic diagram of an open sleeve structure;

[0025] Among them, 1-fixed climbing ladder, 2-movable climbing ladder, 3-open sleeve, 4-winch, 5-first pulley, 6-wire rope, 7-handrail, 8-second pulley, 9-stop block, 10-stop bar, 11-eye plate, 12-vertical opening. Detailed Implementation

[0026] The invention will be further described with reference to the accompanying drawings. Example

[0027] A telescopic evacuation device for a mobile offshore platform, such as Figure 1 , 2 As shown, the evacuation device mainly consists of a fixed ladder section 1, a movable ladder section 2, an open sleeve 3, a winch 4, a pulley block 5, a wire rope 6, and a handrail 7. The horizontal supports on the ladder frame of the fixed ladder section 1 are fixedly connected to the open sleeve 3, as shown... Figure 5 As shown. The open sleeve 3 is installed on the hull plating on the side of the hull; the open sleeve 3 is installed in groups of 2, with each group consisting of symmetrically installed open sleeve 3; the spacing between the two open sleeves 3 in each group is equal to the width of the climbing ladder frame. With this arrangement, when the platform is floating, personnel can quickly evacuate to the water surface using only the fixed section of the climbing ladder.

[0028] like Figure 3 , 4As shown, this invention's evacuation device extends the ladder section 2 to the water surface while the platform is standing. The ladder frame of the ladder section 2 consists of two steel pipes, the outer diameter of which is smaller than the inner diameter of the open sleeve 3. The ladder pipes are inserted into each set of open sleeves 3. Figure 7 As shown, the guide component consists of a support rod and an open sleeve. The support rod is placed horizontally and fixed to the vertically placed open sleeve. The open sleeve is a circular tube with a vertical opening in its wall. The open sleeve 3 has an opening for the horizontal support steps of the ladder's movable section to move up and down. The handrail 7 and winch 4 are located on the platform deck. The wire rope 6 on the winch 4 is connected to the eye plate at the lower end of the ladder frame of the ladder movable section 2 via a pulley block 5 located on the outer plating of the hull side. The connection between the wire rope 6 and the eye plate is shown in the diagram. Figure 6 As shown. Personnel on deck can operate winch 4 to control wire rope 6 to lift ladder section 2 upwards. Ladder section 2 reaches the retrieval position under the guidance of open sleeve 3. When it is necessary to lower ladder section 2, the winch 4 can be operated to control wire rope 6 or the ladder section 2 can be lowered to the water surface under its own weight. Thus, when the platform is in a standing position, personnel can quickly evacuate to the water surface through this evacuation device, realizing its function.

[0029] like Figure 5 As shown, in this embodiment, when the platform evacuation device is used, the limiting stop bar at the upper end of the ladder section 2, when lowered to its lowest point, will engage with the limiting block on the hull side hull plating, thereby stopping the ladder section 2 there and achieving a limiting protection function to prevent the ladder section 2 from slipping out of the lowermost open sleeve 3. Figure 5 It can also be seen that, in order to achieve normal operation of the entire evacuation device, the first pulley, the second pulley, and the lowermost open sleeve 3 need to be located below the limiting block.

Claims

1. A telescopic evacuation device for a mobile offshore platform, characterized in that, The evacuation device is installed on the side surface of the main body of the lifting platform. The evacuation device includes a fixed section of the ladder and a movable section of the ladder. The fixed section of the ladder is fixed to the hull plate on the side of the ship by guide members. The fixed section of the ladder is provided with multiple sets of guide members from top to bottom. Each set of guide members has two guide members. The two guide members are symmetrically fixed on both sides of the fixed section of the ladder. The movable section of the ladder is located between the fixed section of the ladder and the main body of the platform. The guide component consists of a support rod and an open sleeve. The support rod is placed horizontally and fixed to the vertically placed open sleeve. The open sleeve is a round tube with a vertical opening on its wall. The movable section of the ladder slides up and down relative to the fixed section of the ladder via guide components. The two sides of the movable section slide within the slide rails formed by the guide components. A stop bar is provided at the top of the movable section, and a stop block is provided at the bottom of the fixed section. When the movable section slides down to the bottom of the fixed section, the stop block blocks the stop bar. A winch is installed on the deck at the top of the fixed section of the ladder. A first pulley is installed below the winch and next to the bottom of the fixed section of the ladder. A second pulley is installed next to the first pulley and inside the movable section of the ladder. A steel wire rope is wound on the winch. The steel wire rope extends downward and passes around the first and second pulleys in sequence, and is fixed at the bottom of the movable section of the ladder.

2. The telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, The first and second pulleys are fixed to the side surface of the platform body.

3. The telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, The top of the fixed section of the ladder is flush with the deck of the main platform.

4. The telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, A handrail is fixed at the top of the deck of the ladder.

5. The telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, The guide component has a support rod that is fixed to the platform body, and the top of the open sleeve is fixed to the ladder fixed section.

6. The telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, Each set of guide components has two vertical openings that are set opposite to each other. The climbing section consists of two vertically set circular tubes and a ladder plate between the circular tubes. The circular tubes slide inside the inner opening sleeve, and the ladder plate passes through the opening of the opening sleeve.

7. A telescopic mobile offshore platform evacuation device according to claim 1, characterized in that, The bottom of the ladder's movable section is fixed with an eye plate, through which steel wire ropes pass and are secured.

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