Artificial island reef thin-wall cylinder sheet radian control technology

Abstract

The invention relates to an artificial island reef thin-wall cylinder sheet radian control technology which comprises the steps that firstly, a bottom jig frame is arranged, embedded iron is arranged on a construction site in advance according to grids, a set of longitudinal jig frames are arranged in the length direction of the grids at certain intervals, and each set of longitudinal jig frames comprises a plurality of sets of transverse jig frames; a group of transverse jig frames are arranged in the width direction of the grids at certain intervals; in the second stage, arc-shaped plates are arranged, lofting and blanking are carried out according to the theoretical diameter of the barrel, notches are evenly formed in the arc-shaped plates, all the arc-shaped plates are welded to the vertical angle steel of the corresponding transverse jig frame, and an arc jig frame is formed; a third stage, bending the pressed sheet; the arc jig frame used in the method is only made of angle steel and steel plates, the number of types of materials is small, the material cost is low, installation is convenient, independence and flexibility are high, real-time transformation is convenient, adaptability is high, and the forming radian control precision of the cylinder sheet is improved.

Description

Technical Field

[0001] The invention relates to the technical field of thin-walled cylinder manufacturing, and in particular to a curvature control technology of thin-walled cylinder plates for artificial islands and reefs. Background Art

[0002] With the development and gradual increase of artificial islands in marine logistics terminals and bridge and tunnel projects, a solution to replace the traditional riprap cofferdam with a super-large diameter thin-walled steel cylinder is gradually emerging. Compared with the traditional riprap cofferdam, the steel cylinder cofferdam has obvious advantages: (1) The steel cylinder cofferdam has good sealing performance and can effectively ensure that the cofferdam is impermeable; (2) The steel cylinder cofferdam has almost no pollution to the marine environment; (3) The steel cylinder has a simple structure, a simple manufacturing process, and strong operability; (4) The steel cylinder can be manufactured nearby, with a short manufacturing period and high efficiency.

[0003] In recent years, in order to adapt to the sea conditions at different depths, the steel structure cylinder is designed with a large diameter and high height. At the same time, in order to meet the needs of on-site construction, the steel structure cylinder needs to be divided into upper and lower sections for construction. The upper and lower sections of the cylinder are composed of 6 arc sheets respectively. After the production is completed, they are hoisted and closed on the outside, and finally hoisted as a whole onto the ship for shipment.

[0004] The arc sheet is usually bent into shape on an arc-shaped tire frame using a pressing block, so the curvature control of the cylinder is largely affected by the arc-shaped tire frame. In the existing technology, the arc-shaped tire frame is designed to be rough and the control plate forming accuracy is poor; the tire frame is not strong enough and the arc tension is not considered, resulting in deformation of the outer legs of the arc-shaped tire frame after repeated use; secondly, the materials used are too complex, which increases costs and is not conducive to construction.

[0005] Therefore, the present invention proposes a curvature control technology for artificial island reef thin-walled cylinder plates to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a curvature control technology for thin-walled cylinder plates of artificial islands and reefs, which can effectively control the forming curvature of the cylinder plates and meet the strength requirements of the tire frame while using less material.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a curvature control technology of thin-walled cylinder plates of artificial islands and reefs, the innovation of which is: The first stage is to arrange the bottom tire frame; Arrange the embedded iron in a grid at the construction site in advance, arrange a group of longitudinal tire frames at a certain distance along the length direction of the grid, and when arranging the longitudinal tire frames, freely increase or decrease the number of groups of longitudinal tire frames according to the length of the cylinder plate, and add a group of longitudinal tire frames at close distances to the outer sides of the longitudinal tire frames at the edges of both sides, and each group of longitudinal tire frames includes multiple groups of transverse tire frames. When arranging the transverse tire frames, arrange a group of transverse tire frames at a certain distance along the width direction of the grid, and freely increase or decrease the number of groups of transverse tire frames according to the width of the cylinder plate, and each group of transverse tire frames includes multiple vertical angle steels. When arranging the vertical angle steels, arrange one vertical angle steel at a certain distance along the width direction of the grid, and the bottom of each vertical angle steel is welded and fixed to the embedded iron at the corresponding position; The second stage: arranging the curved plates; The arc plate is cut in advance. When the arc plate is cut by numerical control, each arc plate corresponds to a set of transverse tire frames. The arc shape of the upper opening of the arc plate is cut according to the theoretical diameter of the cylinder, and notches are evenly opened at the upper opening of the arc plate. Each arc plate is welded to the vertical angle steel of the corresponding transverse tire frame to form an arc tire frame; The third stage: bending of the pressed sheet; Place the cylinder plate on the arc tire frame, use the pressing block to press the cylinder plate to bend, and the arc of the cylinder plate after bending is controlled by the arc plates of the arc tire frame during the pressing process. During the pressing process, when there is a gap between the arc plates at the corresponding positions of the cylinder plate and there is a close fit between the arc plates at the corresponding positions of the cylinder plate, and it is necessary to adjust the close fit of the cylinder plate upward, insert the anvil into the corresponding groove of the close fit for adjustment, and then use the tooth plate to seal the tire and remove the anvil.

[0008] Furthermore, when the embedded iron is arranged, the spacing between two adjacent embedded irons arranged along the length direction of the grid and the spacing between two adjacent embedded irons arranged along the width direction of the grid are both 1000 mm; The spacing between two adjacent longitudinal tire frames is 3000mm, the spacing between the reinforced longitudinal tire frame and the adjacent longitudinal tire frame is 1500mm, the spacing between two adjacent transverse tire frames in the same group of longitudinal tire frames is 1000mm, and the spacing between two adjacent vertical angle steels in the same group of transverse tire frames is 1000mm.

[0009] Furthermore, a transverse full-length angle steel is arranged on both sides of the bottom tire frame along the grid width direction, and each transverse full-length angle steel is welded and connected as a whole with the outer vertical angle steel of the transverse tire frame located at the edge on the same side of each group of longitudinal tire frames.

[0010] Furthermore, in each group of longitudinal tire frames, the vertical angle steels of the transverse tire frames located at the two side edges are made of first equilateral angle steels, and the vertical angle steels of the remaining transverse tire frames are made of second equilateral angle steels. The specifications of the first equilateral angle steel are greater than those of the second equilateral angle steels, and the specifications include the side length and thickness of the angle steel.

[0011] Furthermore, in each group of longitudinal tire frames, the transverse tire frames located in the middle and the transverse tire frames located at the two side edges are composed of three vertical angle steels, and the remaining transverse tire frames are composed of two vertical angle steels. The adjacent two vertical angle steels of the same group of transverse tire frames are connected into a whole by horizontal angle steels.

[0012] Furthermore, the connections between the vertical angle steel and the embedded iron, between the horizontal angle steel and the vertical angle steel, between the arc plate and the vertical angle steel, and between the transverse full-length angle steel and the vertical angle steel are all fully welded.

[0013] The advantages of the present invention are: (1) The arc cradle used in the curvature control technology of the artificial island thin-walled cylinder plate of the present invention is made of only angle steel and steel plate, with a small number of material types. Compared with conventional H-shaped steel or channel steel, the angle steel material cost is low and easy to install. In addition, the method of adding longitudinal cradles at a close distance meets the structural strength requirements on both sides. The longitudinal cradles and transverse cradles of the arc cradle are independent of each other, and the number of groups can be freely increased or decreased according to the actual size of the cylinder plate. It has strong flexibility, is convenient for real-time modification, and has strong adaptability. In addition, a CNC-produced arc plate is installed on each group of transverse cradles to control the arc forming of the plate after the pressing block is bent, thereby improving the control accuracy of the curvature of the cylinder plate.

[0014] (2) The present invention fully considers the arc tension of the cylindrical sheet after being bent and formed. After being compressed in the center, there is a large lateral force toward the outside, and the outer tire frame often deforms. Therefore, the vertical angle steels of the lateral tire frame located at the edges on both sides adopt large-sized equilateral angle steels to make the tire frame stronger and meet safety requirements.

[0015] (3) The present invention arranges transverse full-length angle steel on the outer side of the bottom tire frame, which not only strengthens the outer tire frame and enhances the structural integrity, but also serves as a guardrail to prevent construction workers from accidentally retreating into the tire frame and causing accidental injuries.

[0016] (4) The present invention provides a uniformly distributed slot design at the upper edge of each arc-shaped plate, which is convenient for inserting an anvil to make local adjustment of the arc later. This not only increases the convenience of adjustment, but also reduces the use of jacks, improves the arc accuracy, and ensures the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of the arrangement of the arc tire frame of the present invention.

[0019] Figure 2 It is a schematic diagram of the arrangement of transverse tire frames in a group of longitudinal tire frames of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the curved plate of the present invention. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Example This embodiment provides a technology for controlling the curvature of thin-walled cylinder plates of artificial islands and reefs, including: The first stage is to arrange the bottom tire frame; Arrange the embedded iron in a grid at the construction site in advance. When arranging the embedded iron, the spacing between two adjacent embedded irons arranged along the length direction of the grid and the spacing between two adjacent embedded irons arranged along the width direction of the grid are both 1000mm; like Figure 1 As shown, a group of longitudinal tire frames is arranged every 3000mm along the length direction of the grid. When the longitudinal tire frames are arranged, the number of groups of longitudinal tire frames can be freely increased or decreased according to the length of the cylinder plate. A group of longitudinal tire frames is added at intervals of 1500mm on the outside of the longitudinal tire frames located at the edges of both sides. Each group of longitudinal tire frames includes multiple groups of transverse tire frames. A group of transverse tire frames is arranged every 1000mm along the width direction of the grid, and the number of groups of transverse tire frames can be freely increased or decreased according to the width of the cylinder plate. Each group of transverse tire frames includes multiple vertical angle steels. When the vertical angle steels are arranged, one vertical angle steel is arranged every 1000mm along the width direction of the grid. The bottom of each vertical angle steel is welded and fixed to the embedded iron at the corresponding position to form a bottom tire frame.

[0023] Since the bottom tire frame is made of angle steel, compared with the conventional H-shaped steel or channel steel, although the material cost is low and the construction is convenient, the strength is relatively low. Therefore, a transverse full-length angle steel 4 is arranged on both sides of the bottom tire frame along the grid width direction. Each transverse full-length angle steel 4 is welded to the outer vertical angle steel of the transverse tire frame located at the edge on the same side of each group of longitudinal tire frames to form a whole. In addition to increasing the overall strength of the bottom tire frame, it also serves as a guardrail. Because construction workers often habitually step back to avoid lifting objects during on-site construction, if there is no guardrail to block it, they may enter the inside of the tire frame and cause a collision with their bodies.

[0024] like Figure 2As shown, in this embodiment, 5 groups of transverse tire frames are arranged in each group of longitudinal tire frames. In each group of longitudinal tire frames, the transverse tire frames located in the middle and the transverse tire frames located at the edges of both sides are composed of three vertical angle steels, and the remaining transverse tire frames are composed of two vertical angle steels. The adjacent two vertical angle steels of the same group of transverse tire frames are connected into a whole by a horizontal angle steel 5; The three vertical angle steels of the transverse tire frame located at the edges of both sides are vertical angle steel 1, vertical angle steel 2 and vertical angle steel 3, which are all made of first equilateral angle steel. The specification of the first equilateral angle steel is L200*200*14mm, that is, the two sides are 200mm long and the thickness is 14mm. The vertical angle steels, transverse full-length angle steel 4 and horizontal angle steel 5 of the remaining transverse tire frames are all made of second equilateral angle steels. The specification of the second equilateral angle steel is L100*100*10mm, that is, the two sides are 100mm long and the thickness is 10mm. The design here fully considers the arc tension of the cylindrical sheet after bending and forming. After the center is compressed, there is a large lateral force outward, and the outer tire frame often deforms. The vertical angle steels of the transverse tire frame located at the edges of both sides adopt large-specification equilateral angle steels to make the tire frame stronger. There is no need to use H-shaped steel or channel steel to meet safety requirements.

[0025] The second stage: arranging the curved plates; The arc plate is cut in advance. The arc plate is made of steel plate with a thickness of 14mm-20mm. When the arc plate is cut by numerical control, each arc plate 6 corresponds to a set of transverse tire frames. The upper arc of the arc plate 6 is cut according to the theoretical diameter of the cylinder, and notches are evenly opened at the upper mouth of the arc plate 6, such as Figure 3 As shown, each arc plate is welded to the vertical angle steel of the corresponding transverse tire frame to form an arc tire frame; The third stage: bending of the pressed sheet; The cylindrical plate is placed on an arc tire frame, and the cylindrical plate is pressed and bent by a pressing block. During the pressing process, the arc plates of the arc tire frame control the forming curvature of the cylindrical plate after bending. During the pressing process, when there is a gap between the cylindrical plate and the arc plates at the corresponding positions, and the cylindrical plate is tightly attached to the arc plates at the corresponding positions, and it is necessary to adjust the tightly attached part of the cylindrical plate upward, insert an anvil into the corresponding groove of the tightly attached part for adjustment, and then use the tooth plate to seal the tire and remove the anvil. Compared with the conventional method of using a jack to adjust the tightly attached part upward, and finally using the tooth plate to partially seal the tire, and then proceeding with the subsequent component manufacturing method, the adjustment method of this embodiment does not require the use of a jack and is more convenient to operate.

[0026] In this embodiment, in order to improve the structural strength of the arc tire frame, full welding is used for the connections between the vertical angle steel and the embedded iron, between the horizontal angle steel and the vertical angle steel, between the arc plate and the vertical angle steel, and between the transverse full-length angle steel and the vertical angle steel.

[0027] The arc frame used in the artificial island reef thin-walled cylinder plate curvature control technology of the present invention is made of angle steel and steel plate only, with few material types, low material cost, convenient installation, strong independence and flexibility, easy real-time transformation, strong adaptability, and uses CNC lofted arc plates to control the arc forming of the plate after the pressing block is bent, thereby improving the control accuracy of the cylinder plate forming curvature.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A curvature control technology for thin-walled cylinder plates of artificial islands and reefs, characterized by: include The first stage is to arrange the bottom tire frame; Arrange the embedded iron in a grid at the construction site in advance, arrange a group of longitudinal tire frames at a certain distance along the length direction of the grid, and when arranging the longitudinal tire frames, freely increase or decrease the number of groups of longitudinal tire frames according to the length of the cylinder plate, and add a group of longitudinal tire frames at close distances to the outer sides of the longitudinal tire frames at the edges of both sides, and each group of longitudinal tire frames includes multiple groups of transverse tire frames. When arranging the transverse tire frames, arrange a group of transverse tire frames at a certain distance along the width direction of the grid, and freely increase or decrease the number of groups of transverse tire frames according to the width of the cylinder plate, and each group of transverse tire frames includes multiple vertical angle steels. When arranging the vertical angle steels, arrange one vertical angle steel at a certain distance along the width direction of the grid, and the bottom of each vertical angle steel is welded and fixed to the embedded iron at the corresponding position; The second stage: arranging the curved plates; The arc plate is cut in advance. When the arc plate is cut by numerical control, each arc plate corresponds to a set of transverse tire frames. The arc shape of the upper opening of the arc plate is cut according to the theoretical diameter of the cylinder, and notches are evenly opened at the upper opening of the arc plate. Each arc plate is welded to the vertical angle steel of the corresponding transverse tire frame to form an arc tire frame; The third stage: bending of the pressed sheet; Place the cylinder plate on the arc tire frame, use the pressing block to press the cylinder plate to bend, and the arc of the cylinder plate after bending is controlled by the arc plates of the arc tire frame during the pressing process. During the pressing process, when there is a gap between the arc plates at the corresponding positions of the cylinder plate and there is a close fit between the arc plates at the corresponding positions of the cylinder plate, and it is necessary to adjust the close fit of the cylinder plate upward, insert the anvil into the corresponding groove of the close fit for adjustment, and then use the tooth plate to seal the tire and remove the anvil.

2. The curvature control technology of thin-walled cylinder plates for artificial islands and reefs according to claim 1 is characterized by: When the embedded iron is arranged, the spacing between two adjacent embedded irons arranged along the length direction of the grid and the spacing between two adjacent embedded irons arranged along the width direction of the grid are both 1000mm; The spacing between two adjacent longitudinal tire frames is 3000mm, the spacing between the reinforced longitudinal tire frame and the adjacent longitudinal tire frame is 1500mm, the spacing between two adjacent transverse tire frames in the same group of longitudinal tire frames is 1000mm, and the spacing between two adjacent vertical angle steels in the same group of transverse tire frames is 1000mm.

3. The curvature control technology of thin-walled cylinder plates for artificial islands and reefs according to claim 2 is characterized by: A transverse full-length angle steel is arranged on both sides of the bottom tire frame along the grid width direction, and each transverse full-length angle steel is welded and connected as a whole with the outer vertical angle steel of the transverse tire frame located at the edge on the same side of each group of longitudinal tire frames.

4. The curvature control technology of thin-walled cylinder plates for artificial islands and reefs according to claim 3 is characterized by: In each group of longitudinal tire frames, the vertical angle steels of the transverse tire frames located at the two side edges are made of first equilateral angle steels, and the vertical angle steels of the other transverse tire frames are made of second equilateral angle steels. The specifications of the first equilateral angle steel are greater than those of the second equilateral angle steels, and the specifications include the side length and thickness of the angle steel.

5. The curvature control technology of thin-walled cylinder plates for artificial islands and reefs according to claim 4 is characterized by: In each group of longitudinal tire frames, the transverse tire frames located in the middle and the transverse tire frames located at the two side edges are composed of three vertical angle steels, and the remaining transverse tire frames are composed of two vertical angle steels. The adjacent two vertical angle steels of the same group of transverse tire frames are connected into a whole by horizontal angle steels.

6. The curvature control technology of thin-walled cylinder plates for artificial islands and reefs according to claim 5 is characterized by: The connections between the vertical angle steel and the embedded iron, between the horizontal angle steel and the vertical angle steel, between the arc plate and the vertical angle steel, and between the transverse full-length angle steel and the vertical angle steel are all fully welded.

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