A removable raised floor support system for a ship and method of installation

Abstract

The detachable ship raised floor support system and installation method have long strip-shaped U-shaped grooves, a plurality of spring nuts are slidably connected in the U-shaped grooves, two or more U-shaped grooves are spliced through connecting pieces and the spring nuts, and a plurality of different shapes are formed. Before laying cables, a bottom support is welded on a deck, the bottom support is laid on the deck by a plurality of U-shaped grooves, a lower support is arranged above the bottom support, an upper support in a whole grid shape is fixed above the lower support, support legs are fixed above the upper support, and a raised floor is laid above the support legs. The present application has the advantages of ingenious principle, simple manufacture, firmness and durability, easy installation, level adjustment and disassembly, labor saving, shortened construction period, no welding operation and no damage to cables in the installation process. The present application solves the installation problem of the raised floor in the ship industry, meets the requirements of the ship owner for no damage to the cables and high installation precision, and is recognized by the ship owner.

Description

Technical Field

[0001] This invention belongs to the field of marine vessel design and construction, and specifically relates to a detachable marine riser floor support system and its installation method. Background Technology

[0002] Central control rooms and switchboard rooms in marine engineering facilities house a large number of electrical equipment. These rooms require raised floors, with space beneath the raised floors and on the steel deck floor for the installation and connection of cables beneath the equipment. Raised floors typically consist of 600mm x 600mm square floor panels arranged in a grid. Each square panel is fixed to four support legs at its four corners, with four adjacent panels sharing a single support leg. These support legs are welded to the steel deck to meet the load-bearing requirements of the raised floor. Therefore, throughout the entire room floor area, at each intersection of the 600mm x 600mm grid, a support leg is required to secure the raised floor to the deck. Because the deck is equipped with numerous cable trays and cables of various curved orientations, the raised floor support legs cannot be directly welded to the steel deck at locations with cable trays. The common practice is to use angle steel or similar profiles, vertically welded to the steel deck on both sides of the cable tray, and horizontal angle steel welded to the vertical angle steel, spanning the cable tray in the form of a cable tray. The raised floor support legs are then welded to the horizontal angle steel of the cable tray above the cables. The raised floor is fixed to the room walls and electrical equipment using an overlapping method. Angle steel supports are first welded to the steel walls and electrical equipment, and then the floor panels are overlapped onto these supports. These angle steel supports and various shaped cable trays, covering the entire room walls and floor, constitute the raised floor's support system.

[0003] Traditional raised floor support systems have two drawbacks: First, the support leg trays are connected by welding. Cables on the floor must be laid first, and then the support leg trays are welded. Extensive welding work is performed above the cables, and even with cable protection, the complexity of the welding process can damage them. Second, the support leg trays are difficult to disassemble after welding. Raised floors consist of many floor panels, and the entire floor needs to achieve a high degree of levelness and flatness after completion. In the raised floor support system, the height of the angle steel supports and brackets is determined during the design phase and welded fixed, making it impossible to adjust according to construction conditions; only the height of the support legs can be adjusted. The support legs of the raised floor consist of two threaded bodies, allowing for fine-tuning of the leg length to adjust the levelness and flatness of the raised floor. However, the adjustment range of the support legs is limited. When there is significant unevenness in the steel deck, simply adjusting the height of the support legs cannot level the raised floor. The support leg trays below the support legs cannot be adjusted in height and need to be cut off, replaced with trays of appropriate height, and then re-welded. The angle steel supports at the junctions of the raised floor with walls and equipment also need to be cut off and re-welded to the appropriate height. Therefore, due to the flatness of the steel deck and the defects in the support system of the raised floor, the leveling of the traditional raised floor requires hot cutting and re-welding of the cable tray. During the process, the cables under the support are easily damaged, and the structure and paint at the welding position of the support are destroyed. This consumes a lot of manpower and time, and the installation accuracy of the raised floor is not easy to control.

[0004] In high-end shipbuilding and marine engineering projects, shipowners do not allow welding operations to be carried out after cables are laid in order to prevent even the slightest damage to the cables. They also have high requirements for the installation accuracy of the riser floor, and traditional riser floor support systems cannot meet the shipowners' high construction standards. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a detachable marine riser floor support system and installation method, aiming to reduce the difficulty and workload for crew members assisting in the installation of shore connectors. It not only allows for 360-degree horizontal rotation but also enables real-time adjustment of the working radius through the sliding function of the pulley and boom assembly on the track. This achieves the alignment of the bolt holes of the manifold flange and the shore connector flange, and facilitates local temporary storage of shore connectors, improving replacement efficiency. The technical solution adopted is as follows: A detachable marine raised floor support system and installation method are disclosed, comprising a long U-shaped groove, with the top ends of the side flanges of the U-shaped groove bent inward and downward to form a limiting plate; multiple spring nuts are slidably connected inside the U-shaped groove, and the spring nuts can slide inside the U-shaped groove. The spring nuts have a rectangular movable plate, with two parallel linear grooves on the upper surface of the movable plate, a circular screw hole in the center of the movable plate, and a nut and a spring fixed at the circular screw hole on the lower surface of the movable plate. The limiting plate is engaged in the linear groove.

[0006] Two or more U-shaped channels are joined together using connectors and spring nuts to form various shapes.

[0007] Before laying the cable, a bottom support is welded on the deck. The bottom support is made up of multiple U-shaped channels laid on the deck. The multiple U-shaped channels avoid obstacles on the deck and the area where the cable is to be laid. The multiple U-shaped channels are irregularly arranged to form the bottom support. The openings of the U-shaped channels of the bottom support face upward.

[0008] A lower support is erected above the bottom support. The lower support is fixed above the bottom support by a vertically set U-shaped groove. The vertically set U-shaped groove is connected to the bottom support and the lower support by an L-shaped connector. The lower support is composed of multiple U-shaped grooves arranged irregularly, with the opening of the U-shaped grooves of the lower support facing downwards.

[0009] A grid-like upper support is fixed above the lower support. The upper support consists of multiple U-shaped grooves. The U-shaped grooves of the upper support are fixed to the U-shaped grooves of the lower support by U-shaped connectors. The openings of the U-shaped grooves of the upper support face downwards.

[0010] Support legs are fixed above the upper support frame, and the raised base plate is laid on top of the support legs.

[0011] Furthermore, in the aforementioned detachable marine raised floor support system and installation method, the U-shaped groove opening of the lower support is placed downwards into the groove of the U-shaped connector, and an outwardly extending wing plate is provided at the opening of the U-shaped connector. Bolts pass through the wing plate and are fixedly connected to the spring nut in the U-shaped groove of the upper support.

[0012] Furthermore, in the aforementioned detachable marine raised floor support system and installation method, the grid size formed by the U-shaped groove of the upper support is 600mm×600mm, which is the same as the size of the raised floor.

[0013] Furthermore, in the aforementioned detachable marine raised floor support system and installation method, the U-shaped groove of the upper support can be spliced ​​into a cross shape by cross-shaped connectors, and four bolts are respectively passed through the four wing plates of the cross-shaped connectors and fixedly connected to the spring nuts in the U-shaped groove.

[0014] Furthermore, the length of the U-shaped groove in the aforementioned detachable marine raised floor support system and installation method can be arbitrarily set.

[0015] Furthermore, in the aforementioned detachable marine raised floor support system and installation method, the U-shaped groove located at the edge of the upper support can be connected by an L-shaped connector or a straight connector.

[0016] Furthermore, in the aforementioned detachable marine raised floor support system and installation method, the support legs are fixed to the U-shaped grooves of the upper bracket by self-tapping screws.

[0017] The beneficial effects of this invention are: 1. The raised floor support system can be assembled arbitrarily and cross obstacles: the spring nut can move freely within the U-shaped groove, so that the relative positions of all the U-shaped grooves that make up the support can be adjusted as needed, crossing the cable tray, and forming the support required for the raised floor support legs above the cable.

[0018] 2. The raised floor support system is easy to install and requires no welding: only the bottom bracket is welded to the deck before the cable is laid. The remaining brackets consist of U-grooves, bolts, and spring nuts. After the cable is laid, no special installation tools are required. The brackets can be installed and leveled using only a toothed saw and a wrench. The installation is very simple and does not require welding, so the cables under the brackets will not be damaged.

[0019] 3. The raised floor support system is easy to level: the vertical U-shaped groove support legs of the bracket are easy to cut, and the connection between the brackets can be achieved by simply installing bolts, which makes it easy to adjust the levelness and flatness of the bracket; the adjustment range is large, which can eliminate the impact of uneven steel deck.

[0020] 4. Drill-free installation of the raised floor support system: The brackets are connected with bolts and spring nuts, and the raised floor is connected with self-tapping screws. Drilling is not required after on-site positioning, saving a lot of time and shortening the construction cycle.

[0021] 5. The raised floor support system is detachable for easy maintenance: When the cables under the raised floor burn out and need repair, the raised floor panels, support legs, and brackets can all be disassembled and easily reassembled to meet maintenance needs.

[0022] 6. The raised floor support system is reusable: It is installed with bolts and spring nuts, and the components will not be damaged after disassembly, so it can be recycled and reused.

[0023] In summary, the detachable marine riser support system and its installation method of this invention are ingenious in principle, simple in manufacturing, and robust and durable. They are easy to install, level, and disassemble, saving labor and shortening the construction cycle. No welding is required, and the installation process does not damage cables. This invention solves the installation problem of risers in the shipbuilding industry, meeting shipowners' requirements for no cable damage and high installation accuracy, and has been recognized by shipowners. Its application prospects are very broad, solving technical problems for the construction of high-end ships and marine engineering products. Attached Figure Description

[0024] Figure 1 These are cross-sectional and top views of a spring nut installed in a U-shaped groove. Figure 2 This is a schematic diagram showing the fixing of the U-shaped groove of the upper support and the U-shaped groove of the lower support; Figure 3 This is a schematic diagram of a structure where four U-shaped grooves are connected by a cross-shaped connector; Figure 4 This is a schematic diagram of a structure where two U-shaped grooves are connected by an L-shaped connector; Figure 5 This is a schematic diagram of the structure connecting the lower support to the vertically arranged U-shaped groove; Figure 6 This is an installation diagram of the raised floor, support legs, upper bracket, lower bracket, and bottom bracket; Among them, 1-U-shaped groove, 2-spring nut, 3-U-shaped connector, 4-bolt, 5-bottom bracket, 6-connector, 7-cross connector, 8-L-shaped connector, 10-lower bracket, 11-upper bracket, 12-support leg, 13-self-tapping screw, 14-raised base plate. Detailed Implementation

[0025] The present invention will be described in detail with reference to specific embodiments.

[0026] like Figure 1 and 2 The present invention relates to a detachable marine raised floor support system and its installation method. The invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the spring nut 2 is designed as a rectangle with two grooves on its surface and a spring at the bottom. The spring and nut are welded together as one piece. The long side of the spring nut 2 is inserted into the U-shaped groove 1 along its opening. By compressing the spring, the spring nut 2 is pushed under the inner flange of the U-shaped groove 1. Simultaneously, the spring nut 2 is rotated 90°, and its X-direction positioning groove engages with the inner flange of the U-shaped groove 1. Under the action of the spring, the spring nut 2 will be locked within the U-shaped groove 1. When the position of the spring nut 2 needs to be changed, by compressing the spring again, the spring nut 2 can be moved arbitrarily along the Y-direction of the length of the U-shaped groove 1.

[0028] Figure 2 This is an assembly method in which two U-shaped channels are fixed together in an intersecting manner. The two U-shaped channels 1 are crossed one above the other, and three spring nuts are inserted inside them. A bolt 4 is used to fix the U-shaped connector 3 to the spring nut 2 inside the lower U-shaped channel 1, thereby fixing the relative position of the U-shaped connector 3 and the lower U-shaped channel 1. Then, two bolts are used to pass through the other two mounting holes of the U-shaped connector 3 to fix the U-shaped connector 3 to the two spring nuts inside the upper U-shaped channel, thereby fixing the upper and lower U-shaped channels together in an intersecting manner in different planes.

[0029] like Figure 3 , 4 As shown, by using connectors of different shapes, the U-shaped channel 1 can be assembled into various basic connection units as needed. For example, four U-shaped channels in the same plane can form a cross connection unit through a cross-shaped connector 7; or two U-shaped channels in different planes can form a cross connection unit, one above the other; or two U-shaped channels in the same horizontal plane can be connected into an L-shaped or T-shaped connection unit through an L-shaped connector 8 or a straight connector; or two U-shaped channels can be connected in a vertical plane. That is, the U-shaped channel 1, spring nut 2, connectors, and bolts 4 can achieve various connections, splicing, and combinations in the X, Y, and Z directions. Through these simple connection units, the U-shaped channels can be connected in various ways according to the arrangement of cable trays on the deck to assemble a support system for a raised floor with a complex shape, avoiding obstacles such as cable trays.

[0030] The installation method for the support system of the raised floor is as follows: Figure 5 , 6 As shown, the bottom support 5 is welded to the steel plate at 600mm intervals, arranged according to the raised floor. At locations where it encounters cable trays and equipment bases, the bottom support 5 is disconnected or moved to either side of the cable tray. The bottom support 5 is irregularly distributed, serving as a support component for the upper, regularly distributed support. The welding and installation of the bottom support 5 must be carried out before laying the cables, ensuring that the welding operation does not damage the cables.

[0031] After the cable laying is completed, since the support legs 12 of the raised floor are distributed in a regular grid pattern, while the bottom support 5 is distributed in an irregular shape to avoid obstacles on the deck, it is necessary to splice a regular grid pattern support on the basis of the bottom support 5 upward and above the cable tray to support the support legs 12 of the raised floor.

[0032] The first step involves inserting numerous spring nuts into the bottom support 5 and the vertically arranged U-shaped groove. The vertically arranged U-shaped groove and the bottom support 5 are then fixed together using connectors 6 and bolts, serving as the support legs of the support structure. Similarly, numerous spring nuts are inserted into the lower support 10 and the vertically arranged U-shaped groove, and the vertically arranged U-shaped groove and the lower support 10 are fixed together using connectors and bolts. These lower supports 10 are connected to the bottom support 5 via the vertically arranged U-shaped groove and welded to the steel deck via the bottom support 5, providing sufficient load-bearing capacity. Because the connection between the lower support 10, the vertically arranged U-shaped groove, and the bottom support 5 can only be within the same vertical plane, the lower support 10 at this stage is also irregularly shaped and cannot directly function as the support legs 12 for the raised floor.

[0033] The second step is to determine the positions of the numerous support legs in the grid distribution according to the arrangement of the floor slabs of the raised floor. On the lower support 10, the upper support 11 is assembled by spring nuts, connectors and bolts in various connection types. The upper support 11 forms a regular grid support of 600mm×600mm on the same horizontal plane to support the support legs of the raised floor that are distributed in a 600mm×600mm grid. It is also connected to the lower support 10 in the same way.

[0034] Because the length of the vertically set U-shaped groove can be cut arbitrarily, and the position of the spring nut within the U-shaped groove can be moved arbitrarily, the levelness and flatness of the lower support 10 grid can be easily adjusted, and the influence of unevenness of the steel deck on leveling can be eliminated. This ensures that the support for the raised floor meets the installation accuracy requirements, laying a good foundation for the next step of leveling the raised floor. The cable tray formed by the grid-like upper support 11 spans the cable tray on the ground. Its installation and adjustment are completed through spring nuts, connectors, and bolts, without the need for welding, and will not damage the cables below.

[0035] Secure the riser support legs 12 to the upper bracket 11 with self-tapping screws 13, then secure each riser 14 to the support legs 12 with self-tapping screws 13. Adjust the height of the support legs 12 to level the surface of the riser; the riser installation is now complete.

Claims

1. A detachable marine riser floor support system, characterized in that, It has a long U-shaped groove, and the top of the two side wing plates of the U-shaped groove bends inward and downward to form a limiting plate; multiple spring nuts are slidably connected in the U-shaped groove. The spring nuts can slide in the U-shaped groove. The spring nuts have a rectangular moving plate. The upper surface of the moving plate is provided with two parallel linear grooves. The center of the moving plate is provided with a circular screw hole. The nut and spring are fixed at the circular screw hole on the lower surface of the moving plate. The limiting plate is inserted into the linear groove. Two or more U-shaped channels can be joined together using connectors and spring nuts to form various different shapes; Before laying the cable, a bottom support is welded on the deck. The bottom support is made up of multiple U-shaped channels laid on the deck. The multiple U-shaped channels avoid obstacles on the deck and the area where the cable is to be laid. The multiple U-shaped channels are irregularly arranged to form the bottom support. The openings of the U-shaped channels of the bottom support face upward. A lower support is erected above the bottom support. The lower support is fixed above the bottom support by a vertically set U-shaped groove. The vertically set U-shaped groove is connected to the bottom support and the lower support by an L-shaped connector. The lower support is composed of multiple U-shaped grooves arranged irregularly, with the opening of the U-shaped grooves of the lower support facing downwards. A grid-like upper support is fixed above the lower support. The upper support consists of multiple U-shaped grooves. The U-shaped grooves of the upper support are fixed to the U-shaped grooves of the lower support by U-shaped connectors. The openings of the U-shaped grooves of the upper support face downwards. Support legs are fixed above the upper support frame, and the raised base plate is laid on top of the support legs.

2. The detachable marine riser floor support system according to claim 1, characterized in that, The U-shaped groove opening of the lower support is placed downwards into the groove of the U-shaped connector. The opening of the U-shaped connector is provided with an outward-spreading wing plate. The bolt passes through the wing plate and is fixedly connected to the spring nut in the U-shaped groove of the upper support.

3. The detachable marine riser floor support system according to claim 1, characterized in that, The grid size formed by the U-shaped groove of the upper support is 600mm×600mm, which is the same as the size of the raised base plate.

4. The detachable marine riser floor support system according to claim 1, characterized in that, The U-shaped groove of the upper support can be spliced ​​into a cross shape by cross-shaped connectors. Four bolts pass through the four wing plates of the cross-shaped connectors and are fixedly connected to the spring nuts in the U-shaped grooves.

5. A detachable marine riser floor support system according to claim 1, characterized in that, The length of the U-shaped groove can be set arbitrarily.

6. A detachable marine riser floor support system according to claim 1, characterized in that, The U-shaped groove located at the edge of the upper support can be connected by an L-shaped connector or a straight connector.

7. A detachable marine raised floor support system according to claim 1, characterized in that, The support legs are fixed to the U-shaped groove of the upper bracket with self-tapping screws.

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