Large low-speed marine diesel engine frame sandblasting free-retractable detachable plug-in extension device

Abstract

A large low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device comprises a baffle, an extension frame, and a reinforcement rib, which is an integrated welded structural member. The plug-in plate hole position of the extension frame (4) of the large low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device is aligned with the end face of the second-layer fixed platform (2) of the steel structure sandblasting room fixed on the wall (1) of the steel structure sandblasting room and inserted. The insertion depth is determined according to the size of the construction frame (6). After insertion, a springboard is placed between the baffle (3) and the reinforcement rib (5). Construction workers stand on the springboard to perform sandblasting operations. The sandblasting distance is appropriate and the sandblasting quality is guaranteed.

Description

Technical Field

[0001] The invention relates to a large-scale low-speed marine diesel engine frame sandblasting method. Different engine models have different widths, and the width of a second-layer fixed walkway in a steel structure sandblasting room is insufficient. A freely retractable and detachable plug-in plate extension device for sandblasting a large-scale low-speed marine diesel engine frame is adopted to extend the width of the second-layer fixed walkway in the steel structure sandblasting room, thereby solving the distance problem between the second-layer fixed walkway and the frame in the steel structure sandblasting room during sandblasting. Background Art

[0002] Sandblasting the engine frame of a large, low-speed marine diesel engine is a pre-painting process. It requires the engine base to be cleaned of rust and maintain a consistent roughness. Due to the engine's height, the upper and middle sections of the frame require construction on a second-level fixed walkway in the steel blasting room. The overall shape of the engine frame is trapezoidal, wide at the bottom and narrow at the top. This width varies for different engine models, so the second-level fixed walkway in the steel blasting room is not wide enough, and the blasting distance is too far, resulting in poor blasting results. Summary of the Invention

[0003] The purpose of the present invention is to provide a large-scale low-speed marine diesel engine frame sandblasting freely retractable detachable plug-in plate extension device.

[0004] The invention discloses a large-scale low-speed marine diesel engine frame sandblasting free-retractable and detachable plug-in plate extension device, comprising a steel structure sandblasting room wall (1), a steel structure two-layer fixed walkway (2) extending from the wall (1), characterized in that: the upper sections on both sides of the I-beam below the walkway (2) are welded with angle steel to form square chutes on both sides, the upper panel of the rear section of the extension frame (4) composed of channel steel is longitudinally provided with a long plug-in plate hole, the upper panels on both sides of the plug-in plate hole are longitudinally welded with reinforcing ribs (5), the front end of the extension frame (4) is provided with a vertical baffle (3), the rear section of the extension frame (4) is inserted into the chute, the plug-in plate hole is movably matched with the vertical plate of the I-beam, and the upper and lower surfaces of the rear section of the extension frame are respectively movably matched with the upper and lower surfaces in the square chute. The upper surface of the extension frame reinforcing rib (5) and the lower surfaces of the side panels on both sides of the channel steel are respectively movably matched with the upper and lower surfaces in the square chute. The slot holes of the extension frame (4) are aligned with the end face of the I-beam vertical plate below the second-level fixed walkway (2) of the steel structure sandblasting room fixed on the wall (1) of the steel structure sandblasting room and inserted into the extension frame. The insertion depth is adjusted according to the distance between the second-level fixed walkway of the steel structure sandblasting room and the frame. The large low-speed marine diesel engine frame sandblasting freely retractable and detachable slotted plate extension device of the present invention includes a baffle, an extension frame, and a reinforcing rib, which are integrated welded structural parts.

[0005] The present invention provides a freely retractable and detachable plug-in plate extension device for sandblasting a large low-speed marine diesel engine frame. A long plug-in plate hole with a width of 15 mm and a length of 800 mm is provided at the center position of the front end of the extension frame. During sandblasting, the position of the plug-in plate hole of the extension frame is aligned with the second-layer fixed walkway of the steel structure sandblasting room, and the insertion depth is adjusted according to the distance between the second-layer fixed walkway of the steel structure sandblasting room and the frame. The extension frame is made of channel steel, with the channel steel opening facing downward, and is pressed against the lower edge of the crossbeam of the second-layer walkway to improve strength. A springboard is placed on the front section of the extension frame. The square slide is composed of an I-beam upper plate, a vertical plate and an angle steel. The function of the reinforcing rib is to improve the strength of the freely retractable and detachable plug-in plate extension device for sandblasting a large low-speed marine diesel engine frame when the tooling is inserted into the second-layer fixed walkway of the steel structure sandblasting room to bear the load. The function of the baffle is to block the springboard when it is placed to prevent it from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the use of the freely retractable and detachable plug-in plate extension device for sandblasting a large low-speed marine diesel engine frame according to the present invention.

[0007] Figure 2 for Figure 1 An enlarged schematic diagram of the end face of the second-floor fixed walkway in the steel structure sandblasting room.

[0008] Figure 3 for Figure 1 The present invention is an enlarged schematic diagram of the front view of the freely retractable and detachable plug-in plate extension device for sandblasting of a large low-speed marine diesel engine frame.

[0009] Figure 4 for Figure 1 The present invention is an enlarged schematic diagram of the left side view of the freely retractable and detachable plug-in plate extension device for sandblasting of a large low-speed marine diesel engine frame.

[0010] Figure 5 for Figure 1 The present invention is an enlarged schematic top view of a freely retractable and detachable plug-in plate extension device for sandblasting a large low-speed marine diesel engine frame. Implementation Method

[0011] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0012] like Figures 1 to 5As shown, the large-scale low-speed marine diesel engine frame sandblasting free telescopic detachable plug-in plate extension device of the present invention has a wall (1) of a steel structure sandblasting room, and a steel structure two-layer fixed walkway (2) extending from the wall (1) is characterized in that: the upper sections on both sides of the I-beam below the walkway (2) are welded with angle steel to form square chutes on both sides, the upper panel of the rear section of the extension frame (4) composed of channel steel has a long plug-in plate hole opened in the longitudinal direction, and the upper panels on both sides of the plug-in plate hole are welded with reinforcing ribs (5) in the longitudinal direction, the front end of the extension frame (4) is provided with a vertical baffle (3), the rear section of the extension frame (4) is inserted into the chute, the plug-in plate hole is movably matched with the vertical plate of the I-beam, and the upper and lower sides of the rear section of the extension frame are respectively movably matched with the upper and lower sides in the square chute. The upper side of the extension frame reinforcing rib (5) and the lower side panels on both sides of the channel steel are respectively movably matched with the upper and lower sides in the square chute. The slot holes of the extension frame (4) are aligned with the end face of the I-beam vertical plate below the second-level fixed walkway (2) of the steel structure sandblasting room fixed on the wall (1) of the steel structure sandblasting room and inserted into the extension frame. The insertion depth is adjusted according to the distance between the second-level fixed walkway of the steel structure sandblasting room and the frame. The large low-speed marine diesel engine frame sandblasting freely retractable and detachable slotted plate extension device of the present invention includes a baffle, an extension frame, and a reinforcing rib, which are integrated welded structural parts.

[0013] The large-scale low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device of the present invention is used to adjust the width of the second-layer fixed walkway along the long steel structure sandblasting room according to the size of the construction frame (6) of different models. The baffle (3), the extension frame (4), and the reinforcement rib (5) are integrated welded structural parts. The large-scale low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device of the present invention has a long plug-in plate hole with a width of 15 mm and a length of 800 mm at the center position at the front end of the extension frame. During sandblasting, the position of the extension frame plug-in plate hole is aligned with the second-layer fixed walkway of the steel structure sandblasting room, and the insertion depth is adjusted according to the distance between the second-layer fixed walkway of the steel structure sandblasting room and the frame. The extension frame is made of channel steel, with the channel steel opening facing downward and pressing against the lower edge of the second-layer walkway beam to improve strength. A springboard is placed on the front section of the extension frame. The square chute is composed of an I-beam upper plate, a vertical plate, and an angle steel. The function of the reinforcing rib is to improve the strength of the freely retractable and detachable plug-in plate extension device for the sandblasting of a large low-speed marine diesel engine frame when the tooling is inserted into the second-layer fixed walkway of the steel structure sandblasting room to bear the weight. The function of the baffle is to block the springboard when placing the springboard to prevent it from falling. The plug-in plate hole position of the extension frame (4) of the freely retractable and detachable plug-in plate extension device for the sandblasting of a large low-speed marine diesel engine frame is aligned with the end face of the second-layer fixed walkway (2) of the steel structure sandblasting room fixed on the wall (1) of the steel structure sandblasting room and inserted. The insertion depth is determined according to the size of the construction frame (6). After insertion, the springboard is placed on the extension frame between the baffle (3) and the fixed walkway (2).

Claims

1. A freely retractable and detachable plug-in extension device for sandblasting a large low-speed marine diesel engine frame, comprising a steel structure sandblasting room wall (1), a steel structure two-layer fixed walkway (2) extending from the wall (1), characterized in that: The upper sections on both sides of the I-beam below the walkway (2) are welded with angle steel to form square chutes on both sides. The upper panel of the rear section of the extended frame (4) composed of the channel steel has a long plug-in hole in the longitudinal direction. The upper panels on both sides of the plug-in hole are welded with reinforcing ribs (5) in the longitudinal direction. The front end of the extended frame (4) is provided with a vertical baffle (3). The rear section of the extended frame (4) is inserted into the chute. The plug-in hole is movably matched with the vertical plate of the I-beam. The upper and lower sides of the rear section of the extended frame are respectively movably matched with the upper and lower sides in the square chute; the upper side of the extended frame reinforcement rib (5) and the lower side panels on both sides of the channel steel are respectively movably matched with the upper and lower sides in the square chute; the position of the plug-in hole of the extended frame (4) is aligned with the end face of the I-beam vertical plate below the second-floor fixed walkway (2) of the steel structure sandblasting room fixed on the wall (1) of the steel structure sandblasting room.

2. The large-scale low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device according to claim 1 is characterized in that: The baffle (3), the extension frame (4), and the reinforcing rib (5) are integrally welded structural parts.

3. The large low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device according to claim 1 or 2, characterized in that: The front end of the extension frame (4) is provided with a long plate hole with a width of 15 mm and a length of 800 mm from the center position.

4. The large low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device according to claim 1 or 2, characterized in that: A springboard is placed on the front section of the extension frame.

5. The large low-speed marine diesel engine frame sandblasting freely retractable and detachable plug-in plate extension device according to claim 1 or 2, characterized in that: The square chute is composed of an I-beam upper plate, a vertical plate and angle steel.

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