Maintenance platform device special for marine low-speed diesel engine tail end supercharger

Abstract

The utility model belongs to the field of marine low-speed diesel engine tail end superchargers, and particularly relates to a special maintenance platform device for marine low-speed diesel engine tail end superchargers, a maintenance platform is composed of two independent assemblies arranged on the fuel oil side and the exhaust side of a main engine respectively, and each assembly comprises a floor assembly and a supporting assembly; the floor assembly is of a stepped structure and comprises an exhaust side maintenance floor body and a fuel oil side maintenance floor body. The supporting assembly comprises an exhaust side supporting piece, an exhaust side support piece and a fuel oil side supporting piece. The inner side of the exhaust side maintenance floor body is connected through the exhaust side supporting piece fixed to the shell of the air cooler, and the whole supporting assembly does not occupy the space of a safety channel beside the air cooler. The operation height is increased to the position of the supercharger base, so that sailors with limited heights can work nearby, and the efficiency, quality and safety of overhauling work are improved.

Description

Technical Field

[0001] This invention belongs to the field of marine low-speed diesel engine tail-end turbochargers, specifically relating to a special maintenance platform device for marine low-speed diesel engine tail-end turbochargers. Background Technology

[0002] In recent years, with the increasing demand for small vessels in the shipping market, marine low-speed diesel engines with cylinder bores of 350mm to 500mm have become increasingly widely used. These engines typically employ a tail-end scavenging air-cooled design, with the turbocharger usually positioned above the air-cooler housing. Taking a 450mm cylinder bore engine as an example, there is approximately a 1.1-meter vertical height difference between the turbocharger base and the surrounding floor, with routine maintenance height ranging from 1.5 meters to 2.1 meters.

[0003] Existing dedicated maintenance platforms for marine low-speed diesel engine tail-end turbochargers suffer from insufficient cabin clearance height during maintenance. This forces crew members with limited height to frequently climb or use makeshift tools, leading to inconvenience and safety hazards. Furthermore, traditional maintenance platforms typically occupy space in the engine-side passageway, impacting equipment maintenance efficiency and personnel access. While some engine models have a working platform at the front, the lack of dedicated maintenance facilities in the tail-end turbocharger area results in time-consuming and labor-intensive maintenance work. Existing dedicated maintenance platforms for marine low-speed diesel engine tail-end turbochargers fail to meet the demands for efficient and safe maintenance, necessitating a maintenance platform that increases operating height without encroaching on passageway space. Therefore, developing a dedicated maintenance platform adapted to the tail-end turbocharger layout, balancing flexibility and safety, is crucial to addressing these technical challenges. Summary of the Invention

[0004] This invention addresses the problems of insufficient channel height, safety hazards, occupation of engine access space, reduced equipment maintenance efficiency and personnel access, and time-consuming and labor-intensive maintenance in existing marine low-speed diesel engine tail-end turbocharger maintenance platform devices. The invention proposes a dedicated maintenance platform device for marine low-speed diesel engine tail-end turbochargers, comprising two independent components located on the fuel side and exhaust side of the main engine, respectively. Each component includes a floor assembly and a support assembly.

[0005] The floor assembly has a stepped structure, including: an exhaust-side access floor body and a fuel-side access floor body;

[0006] The support assembly includes: an exhaust-side support, an exhaust-side bracket, and a fuel-side support;

[0007] The inner side of the exhaust-side access floor is connected by an exhaust-side support fixed to the air cooler housing, and the outer side is fixed by an exhaust-side bracket. The plane height of the exhaust-side access floor is raised to the position of the turbocharger base, which is 0.8-1.0 meters higher than the original turbocharger channel plane height.

[0008] The fuel-side support is fixed by the air cooler's walkway and the original structural beams of the air cooler, and the support assembly as a whole does not occupy the space of the safety passage next to the machine.

[0009] The main body of the fuel side access panel is integrated with the floor below to form a structure to prevent falling objects; the main body of the exhaust side access panel includes an exhaust side cover and surrounding guardrails installed on the output channel.

[0010] Portable aluminum alloy ladders are installed in the diesel engine tail passage area to assist in working at height;

[0011] The maintenance platform can withstand the load of two people working simultaneously, and disassembly and assembly do not require modification of the original structure of the diesel engine.

[0012] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the inner side of the stepped structure of the exhaust-side floor body is provided with 4 exhaust-side support members, which are connected to the pre-embedded parts of the air cooler shell by bolts.

[0013] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the fuel side support includes 2 diagonal ribs and 4-8 angle steels, which are fixed by the air cooler's walkway and the original structural beam of the air cooler.

[0014] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the exhaust side cover is a semi-open structure, integrated with the scavenging air box vent valve cover, and the opening angle is 0°-90°.

[0015] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the surface of the floor assembly is covered with anti-slip patterned steel plate with a thickness of not less than 5mm.

[0016] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the guardrail is 1.2 meters high, adopts a detachable steel pipe structure, and the spacing between the guardrail posts is no more than 1.5 meters.

[0017] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the portable aluminum alloy ladder stool has a folding structure, an unfolded height of 0.8 meters, and a load-bearing capacity of more than 150 kg.

[0018] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, the exhaust side support and fuel side support are made of Q345B steel and the surface is hot-dip galvanized for corrosion protection.

[0019] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, a mesh grille is provided below the main body of the fuel side maintenance floor, and the grille aperture is no more than 20mm.

[0020] According to the above-described special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, a rubber shock-absorbing pad with a thickness of 10mm and a Shore hardness of 60±5 is provided at the connection between the support component and the engine body.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. This invention raises the operating height to the turbocharger base position by placing two independent maintenance platforms on the fuel side and the exhaust side respectively, increasing the height by about 0.9 meters compared to the original turbocharger channel plane, allowing crew members with height limitations to work nearby and reducing the risk of climbing.

[0023] 2. The support components of this invention are fixed in place by taking advantage of the existing structure around the machine body. They adopt customized special exhaust side support components, exhaust side bracket components and fuel side support components. While ensuring strength and being able to withstand two people working at the same time, they avoid occupying the safety passage next to the machine and optimize space utilization.

[0024] 3. The maintenance platform of this invention adopts a modular design, and the floor components and support components are easy to disassemble and assemble, reducing construction costs and maintenance difficulty. The main body of the fuel-side maintenance floor is integrated with the floor below to prevent falling objects. The main body of the exhaust-side maintenance floor includes guardrails and an exhaust-side protective cover to further enhance safety protection. Portable aluminum alloy ladders are provided in the rear passage area to enable flexible handling and rapid access.

[0025] This invention enables comprehensive overhaul of turbochargers, meeting the demands of high-intensity operations while adapting to different ship engine room layouts, significantly improving the user experience, and providing an important reference for the standardization of overhaul of small-bore tail-end turbocharger models. Attached Figure Description

[0026] Figure 1 This invention relates to a schematic diagram showing the installation positions of the exhaust-side maintenance floor main body, exhaust-side support components, and exhaust-side protective cover of a special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine.

[0027] Figure 2 : A schematic diagram of the installation position of the exhaust side support component of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0028] Figure 3 This invention relates to a schematic diagram showing the installation positions of the fuel-side inspection plate body and fuel-side support components of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger.

[0029] Figure 4 : A perspective view of the main structure of the exhaust side maintenance floor of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0030] Figure 5 : A perspective view of the exhaust side support component of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0031] Figure 6 : A perspective view of the exhaust side cover of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0032] Figure 7 : A perspective view of the exhaust side support component of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0033] Figure 8 : A perspective view of the main body of the fuel side maintenance plate of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0034] Figure 9 : A perspective view of the structure of the fuel side support component of a special maintenance platform device for a marine low-speed diesel engine tail-end turbocharger according to the present invention.

[0035] Figure 10 : A perspective view of the structure of a portable aluminum alloy ladder stool for a special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine according to the present invention.

[0036] In the diagram: 1-Exhaust side access panel body, 2-Exhaust side support, 3-Exhaust side cover, 4-Exhaust side support, 5-Fuel side access panel body, 6-Fuel side support, 7-Portable aluminum alloy ladder, 8-Air cooler, 9-Lower floor, 10-Turbocharger, 11-Output channel. Detailed Implementation

[0037] Preferred Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] like Figures 1 to 6 As shown: In this embodiment,

[0040] The present invention relates to a design method for a dedicated maintenance platform for the tail-end turbocharger of a marine low-speed diesel engine, combined with the appendix. Figure 1-6 Detailed explanation is as follows:

[0041] picture Figures 1 to 3 As shown: A special maintenance platform device for the tail-end turbocharger of a marine low-speed diesel engine, suitable for models with a cylinder diameter of 350mm to 500mm. The maintenance platform consists of two independent components located on the fuel side and the exhaust side of the main engine, respectively. Each component includes a floor assembly and a support assembly.

[0042] The floor assembly has a stepped structure, including: exhaust side access floor body 1 and fuel side access floor body 5;

[0043] The support components include: exhaust-side support 4, exhaust-side bracket 2, and fuel-side support 6;

[0044] The inner side of the exhaust-side maintenance floor body 1 is connected by the exhaust-side support 4 fixed to the shell of the air cooler 8, and the outer side is fixed by the exhaust-side bracket 2. The plane height of the exhaust-side maintenance floor body 1 is raised to the position of the base of the turbocharger 10, which is 0.8-1.0 meters higher than the original plane height of the turbocharger 10 channel.

[0045] The fuel side support 6 is fixed by the walkway of the air cooler 8 and the original structural beam of the air cooler 8, and the support assembly as a whole does not occupy the safety passage space next to the machine.

[0046] The fuel side inspection panel body 5 is integrated with the floor 9 below to form a structure to prevent falling objects; the exhaust side inspection panel body 1 includes an exhaust side cover 3 and surrounding guardrails installed on the output end channel 11.

[0047] Portable aluminum alloy ladder stools 7 are installed in the diesel engine tail passage area to assist in climbing operations;

[0048] The maintenance platform can withstand the load of two people working simultaneously, and disassembly and assembly do not require modification of the original structure of the diesel engine.

[0049] The stepped structure of the exhaust-side floor body 1 has four exhaust-side support members 4, which are connected to the pre-embedded parts of the air cooler 8 shell by bolts.

[0050] The fuel side support 6 includes 2 diagonal ribs and 4-8 angle steels, which are fixed by the walkway of the air cooler 8 and the original structural beam of the air cooler 8.

[0051] The exhaust side cover 3 has a semi-open structure and is integrated with the scavenging air box vent valve cover, with an opening angle of 0°-90°.

[0052] The surface of the floor components is covered with anti-slip patterned steel plates with a thickness of not less than 5mm.

[0053] The guardrail is 1.2 meters high and uses a detachable steel pipe structure. The spacing between the guardrail posts is no more than 1.5 meters.

[0054] The portable aluminum alloy ladder stool 7 has a folding structure, an unfolded height of 0.8 meters, and a load-bearing capacity of over 150 kg.

[0055] The exhaust-side bracket 2 and the fuel-side support 6 are made of Q345B steel and are hot-dip galvanized for corrosion protection.

[0056] A mesh grille is provided below the main body 5 of the fuel-side inspection floor, with a grille aperture of no more than 20mm.

[0057] Rubber shock-absorbing pads with a thickness of 10mm and a Shore hardness of 60±5 are installed at the connection between the support components and the body.

[0058] like Figures 1 to 3 As shown, the maintenance platforms are located on the fuel side and exhaust side of the diesel engine. The fuel-side maintenance floor body 5 is located near the main engine fuel pipeline area, while the exhaust-side maintenance floor body 1 is positioned above the air cooler 8 housing. The plane height of the exhaust-side maintenance floor body 1 is increased by 0.9 meters compared to the original turbocharger 10 passage plane height, reaching the turbocharger 10 base position, forming a surrounding maintenance space. Portable aluminum alloy ladders 7 are provided in the diesel engine tail passage area for temporary access.

[0059] like Figure 4 The exhaust-side maintenance floor main body 1 shown is a stepped structure. The inner side is bolted to the embedded parts of the air cooler 8 shell via four exhaust-side support members 4, while the outer side is supported and fixed by exhaust-side bracket members 2. The exhaust-side bracket members 2 are made of Q345B steel, are L-shaped, with one end welded to the shell reinforcing rib of the air cooler 8, and the other end fixed to the exhaust-side maintenance floor main body 1 via a flange. An exhaust-side protective cover 3 is installed on the output channel 11, integrated into the scavenging air box vent valve cover, with an opening angle of 90° for easy access. A removable guardrail is installed around the exhaust-side maintenance floor main body 1, 1.2 meters high, with a column spacing of 1.2 meters, and the crossbars are made of Φ25mm steel pipe.

[0060] like Figure 8 , Figure 9 As shown, the main body 5 of the fuel-side maintenance floor is an integral anti-slip steel plate, 5mm thick, which is welded to the floor 9 below to prevent tools from falling into the engine compartment. The fuel-side support 6 consists of two diagonal ribs and four angle steels. One end of the diagonal rib is welded to the main beam of the walkway of the air cooler 8, and the other end is bolted to the shell of the air cooler 8. The angle steels are arranged laterally to enhance the torsional strength of the main body 5 of the fuel-side maintenance floor. A 20mm mesh grille is installed below the main body 5 of the fuel-side maintenance floor, which serves both ventilation and fall prevention functions.

[0061] During the installation of the support components, first locate the embedded parts of the air cooler 8 housing, and then fix the exhaust side support 4 with M16 bolts; the fuel side support 6 utilizes the existing reserved holes on the air cooler 8's walkway and is connected using a combination of welding and bolts. 10mm thick rubber vibration damping pads are added to all connections to reduce vibration and noise.

[0062] like Figure 10 As shown: The aluminum alloy step stool features a folding structure, reaching a height of 1.8 meters when unfolded, with a step width of 400mm and a non-slip textured surface. Rubber non-slip pads are installed at the bottom of the stool, and hooks are provided at the top for securing it to the platform railing to ensure stability.

[0063] The platform static load test showed that the maximum deformation of the main body 5 of the fuel side maintenance floor was ≤2mm, and the load was 2kN / m. 2 The exhaust side support component 2 has a bending strength ≥150MPa, which meets the requirements for two people to work at the same time.

[0064] Construction process:

[0065] a. Customize floor and support components according to the machine size;

[0066] b. Remove the original passageway cover plate, install the support components, and secure them;

[0067] c. Assemble the floor components and connect the guardrail and exhaust side cover 3;

[0068] d. Debug the portable aluminum alloy ladder stool 7 and complete the acceptance test.

[0069] This invention significantly reduces modification costs through modular design and reuse of existing structures, and the platform assembly and disassembly time does not exceed 4 hours, making it suitable for rapid deployment of various tail-end turbocharger models.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A service platform device for a marine low-speed diesel engine tail end supercharger, characterized in that: The maintenance platform is composed of two independent components arranged on the fuel side and the exhaust side of the main engine, each component including a floor assembly and a support assembly; The floor assembly is of a stepped structure, including an exhaust side maintenance floor main body (1) and a fuel side maintenance plate main body (5); The support assembly includes an exhaust side support (4), an exhaust side bracket (2) and a fuel side support (6); The inner side of the exhaust side maintenance floor main body (1) is connected by the exhaust side support (4) fixed on the shell of the air cooler (8), and the outer side is fixed by the exhaust side bracket (2). The plane height of the exhaust side maintenance floor main body (1) is raised to the base position of the supercharger (10), which is increased by 0.8-1.0 meters compared with the original supercharger (10) passage plane height; The fuel side support (6) is fixed by the walkway of the air cooler (8) and the original structural beam of the air cooler (8). The overall support assembly does not occupy the space of the machine safety passage; The fuel side maintenance plate main body (5) is integrated with the lower floor (9) to form a falling object prevention structure. The exhaust side maintenance floor main body (1) includes an exhaust side cover (3) arranged on the output end passage (11) and a peripheral guardrail; A portable aluminum alloy ladder stool (7) is arranged in the tail end passage area of the diesel engine for assisting climbing operation; The overall maintenance platform can bear the load of two people working at the same time, and does not need to modify the original structure of the diesel engine body during disassembly and assembly.

2. A kind of low-speed diesel engine tail end supercharger special maintenance platform device for ship according to claim 1, characterized in that: The stepped structure of the exhaust side maintenance floor main body (1) is provided with four exhaust side supports (4) on the inner side, which are connected with the embedded parts of the shell of the air cooler (8) by bolts.

3. A kind of low-speed diesel engine tail end supercharger special maintenance platform device for ship according to claim 2, characterized in that: The fuel side support (6) includes two inclined ribs and four to eight angle steels, which are fixed by the walkway of the air cooler (8) and the original structural beam of the air cooler (8).

4. A kind of low-speed diesel engine tail end supercharger special maintenance platform device for ship according to claim 3, characterized in that: The exhaust side cover (3) is of a semi-open structure, integrated with the scavenging tank exhaust valve cover, and the opening angle is 0°-90°.

5. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 4, characterized in that: The surface of the floor assembly is paved with anti-slip pattern steel plates with a thickness not less than 5mm.

6. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 5, characterized in that: The height of the guardrail is 1.2 meters, which adopts a detachable steel pipe structure, and the distance between the columns of the guardrail is not greater than 1.5 meters.

7. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 6, characterized in that: The portable aluminum alloy ladder stool (7) is of a folding structure, with an unfolded height of 0.8 meters and a load capacity of more than 150 kg.

8. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 7, characterized in that: The exhaust side bracket (2) and the fuel side support (6) are made of Q345B steel, and the surface is subjected to hot-dip galvanizing corrosion prevention treatment.

9. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 8, characterized in that: The fuel side maintenance plate main body (5) is provided with a mesh grating below, and the grating aperture is not greater than 20mm.

10. A service platform device for a low-speed marine diesel engine tail end supercharger according to claim 9, characterized in that: Rubber shock pads with a thickness of 10mm and a Shore hardness of 60±5 are arranged at the connection between the support assembly and the engine body.

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