On-site forming method and forming support mechanism for large thick plate square and round sections

Abstract

The present invention discloses an on-site forming method and forming support mechanism for large thick plate square and round sections in the fields of construction technology such as chemical industry, metallurgy and public works, including: a straight-mouth assembly jig; the straight-mouth assembly jig includes two groups of right-angle support members and a support rod installed between the two groups of right-angle support members, a telescopic connection member is provided above the support rod, a support plate is provided on the movable end of the telescopic connection member, a mounting plate is installed at the end of the telescopic connection member away from the support plate, and the mounting plate is slidably installed on the support rod so that the support rod moves along the extension direction of the length of the support rod with the right-angle support member; in the present application, the square and round section is divided into two modules for prefabrication, and after the two modules are prefabricated, the modules are assembled as a whole on a steel platform, and no large hydraulic equipment and tooling are required in the process of forming the square and round section, so that the process flow of the square and round section forming is short and easy to master on site, and it can be manufactured on site, saving transportation costs.

Description

Technical Field

[0001] The invention relates to the technical fields of chemical engineering, metallurgy, public engineering and the like, and in particular to an on-site forming method for large-scale thick plate square and round sections and a forming support mechanism. Background Art

[0002] In the emission of chemical, metallurgical and electric power industries, in order to meet the emission standards, exhaust gas desulfurization and denitrification projects must be carried out. The flue and equipment in the exhaust gas desulfurization and denitrification projects must use square and round sections (square and round).

[0003] The traditional manufacturing of square and round sections requires the use of pressing equipment and molds, which has high requirements for production equipment, and is generally manufactured in factories. It is difficult to produce round and square sections on site, and after processing and forming in the factory, the formed square and round sections need to be transported to the installation site, increasing production costs. Summary of the invention

[0004] The purpose of the present invention is to provide an on-site forming method and forming support mechanism for large thick plate square and round sections, so as to solve the problem raised in the above background technology that the traditional manufacturing of square and round sections requires the use of pressing equipment and molds, has high requirements on the production equipment, and is constructed within the processing site, making it difficult to produce square sections on site.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A large-scale thick plate square and round section on-site forming support mechanism, comprising: a straight-mouth assembly jig;

[0006] The straight-mouth assembly jig comprises two groups of right-angle support members and a support rod installed between the two groups of right-angle support members, a telescopic connecting member is provided above the support rod, and a supporting plate is provided on the movable end of the telescopic connecting member;

[0007] Wherein, a mounting plate is installed at one end of the telescopic connecting member away from the support plate, and the mounting plate is slidably mounted on the support rod so that the support rod moves along the extension direction of the length of the support rod with the right-angle support member.

[0008] Preferably, a push rod perpendicular to the support rod is provided on one side wall of the support rod, a connecting sleeve is slidably provided on the outer end of the push rod, a support block having the same moving path as the push rod is slidably provided in the connecting sleeve, and an elastic member is provided between the support block and the push rod;

[0009] Among them, the connecting sleeve is provided with a kit parallel to the support rod, and moving parts are slidably inserted at both ends of the inner cavity of the kit. A rack is provided on the inner end of the moving part, and a gear meshing with the rack is provided in the kit. The gear is provided with a pull rope connected to the support block to drive the support block to move closer to the push rod.

[0010] Preferably, the support rod comprises a mounting sleeve and movable rods slidably inserted into the two ends of the inner cavity of the mounting sleeve.

[0011] Preferably, two groups of limiting members are slidably provided below the support plate, and elastic elements are provided on the limiting members to drive the two groups of limiting members to move closer together.

[0012] Preferably, the on-site forming method of large thick plate square and round sections is implemented by using a large thick plate square and round section on-site forming support mechanism, and specifically comprises the following steps:

[0013] S1: Divide the square section into two square section modules, and design the layout of the square section module wall panels;

[0014] S2: Assemble and weld the wall panels of the square and round section modules on the platform according to the layout drawing, and weld the inverted chain tightening ear plates near the upper and lower openings of the inner wall of the wall panels of the square and round section modules;

[0015] S3: Draw the ground circle axis and inner circle arc of the square circle section on the platform, and evenly weld several groups of baffles inside the inner circle arc;

[0016] S4: Place the square and circle section module on the platform, install the fall chain on the fall chain tightening lugs at the upper and lower openings, tighten the fall chains at the upper and lower openings, and basically form the square and circle section module;

[0017] S5: Place the square and circle section module on the outside of the baffle, and make the center point of the ground circle of the square and circle section module close to the baffle, weld the first set of assembly fixtures and flat wedges on the platform, so that they are on the outside of the square and circle section module, tighten the fall chain at the bottom of the square and circle section module, and then weld the assembly fixtures and flat wedges on the platform in turn, and use the fall chain at the bottom of the square and circle section module to shape the ground circle under the square and circle section module;

[0018] S6: Set an elastic support rod near the upper mouth of the square and circle section module, and install a straight-mouth assembly jig at a right angle to the square and circle section module. Use a door-shaped clamp to twist the mouth and tighten it with a fall chain to form the square mouth on the square and circle section module.

[0019] S7: Assemble two sets of square and round section modules on the platform and perform welding.

[0020] Preferably, the spacing between two adjacent groups of baffles is 200 mm.

[0021] Preferably, after the wall panels of the square-circle section module are welded on the platform according to the layout drawing in step S2, the wall panels of the square-circle section module are subjected to appearance and non-destructive inspection. After passing the inspection, the layout lines and the reinforcement assembly lines are laid out, and the reinforcement ribs are assembled and welded.

[0022] Preferably, the method of installing the straight-mouth assembly jig at the right angle position of the square-circle section module in step S6 is to adjust the length of the telescopic connection piece, place the support plate above the square-circle section module, and place the two sets of right-angle support pieces at two right angles of the square-circle section module.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present application, the square and round sections are divided into two modules for prefabrication. After the two modules are prefabricated, the modules are assembled as a whole on a steel platform. In the process of forming the square and round sections, no large hydraulic equipment or tooling is required, so that the process flow of forming the square and round sections is short, easy to master on site, and can be produced on site, saving transportation costs, improving production efficiency, and ensuring forming size and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the square and circle node module structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the connection structure between the square and round node module and the straight mouth assembly jig of the present invention;

[0026] Figure 3 This is a schematic diagram of the straight-mouth assembly mold structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the connection structure between the kit and the moving part of the present invention;

[0028] Figure 5 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0029] In the figure: 1. Platform; 2. Assembly fixture; 3. Falling chain; 4. Elastic support rod; 5. Straight-mouth assembly jig; 51. Right-angle support member; 52. Support rod; 521. Mounting sleeve; 522. Movable rod; 53. Support plate; 54. Limiting member; 55. Telescopic connector; 56. Mounting plate; 57. Kit; 58. Moving member; 59. Rack; 510. Gear; 511. Connecting sleeve; 512. Push rod; 513. Elastic member; 514. Pull rope; 515. Support block; 6. Square and round section module. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] See also Figure 2 and Figure 3 , the present invention provides a technical solution: a large thick plate square and round section on-site forming support mechanism, comprising: a straight mouth assembly jig 5;

[0033] The straight-mouth assembly jig 5 includes two groups of right-angle support members 51 and a support rod 52 installed between the two groups of right-angle support members 51; a telescopic connecting member 55 is provided above the support rod 52 (the telescopic connecting member 55 includes a telescopic sub-rod and a telescopic mother rod, the telescopic sub-rod is slidably inserted in the inner cavity of the telescopic mother rod, and the telescopic mother rod is threaded with bolts for fixing the telescopic sub-rod), and a support plate 53 is provided on the movable end of the telescopic connecting member 55.

[0034] In this embodiment, if Figure 3 As shown, the support rod 52 includes a mounting sleeve 521 and a movable rod 522 slidably inserted into the two ends of the inner cavity of the mounting sleeve 521; the movable rod 522 slides inside the mounting sleeve 521, so that the distance between the two groups of right-angle support members 51 can be adjusted, and bolts for fixing the movable rod 522 are screwed on the mounting sleeve 521.

[0035] See also Figure 3 A mounting plate 56 is installed below the telescopic connecting member 55 , and the mounting plate 56 is slidably installed on the support rod 52 , so that the support rod 52 can slide below the mounting plate 56 , and the sliding direction is toward the right-angle support member 51 .

[0036] In this embodiment, the support plate 53 is placed above the square section module 6, and the right-angle support member 51 is placed at the right angle of the upper mouth of the square section module 6. When the fall chain 3 tightens the square section module 6, the square section module 6 will squeeze the right-angle support member 51. If there is a gap between the right-angle support member 51 and the square section module 6, when the right-angle support member 51 is squeezed, the right-angle support member 51 will drive the support rod 52 to move under the mounting plate 56 to adjust the position of the right-angle support member 51. At the same time, the position of the support plate 53 will not change, thereby avoiding the support plate 53 from being offset.

[0037] See also Figure 3 , Figure 4 and Figure 5 A push rod 512 is provided on one side wall of the support rod 52 (the push rod 512 is perpendicular to the support rod 52), a connecting sleeve 511 is slidably sleeved on the outer end of the push rod 512, a support block 515 is slidably provided in the connecting sleeve 511 (the moving path of the support block 515 is the same as the moving path of the push rod 512), and an elastic member 513 is provided between the support block 515 and the push rod 512; a sleeve 57 is provided on the connecting sleeve 511 (the sleeve 57 is parallel to the support rod 52), and moving members 58 are slidably inserted at both ends of the inner cavity of the sleeve 57, a rack 59 is provided on the inner end of the moving member 58, and a gear 510 meshing with the rack 59 is provided in the sleeve 57, a pull rope 514 is wound around the rotating shaft of the gear 510, and the end of the pull rope 514 away from the rotating shaft of the gear 510 is connected to the support block 515.

[0038] In this embodiment, when the right-angle support member 51 is at a right angle to the square-circle section module 6, the two groups of moving members 58 also contact the inner wall of the square-circle section module 6. During the tightening of the fall chain 3, the wall panels of the square-circle section module 6 will move closer to squeeze the moving member 58, drive the rack 59 to move, and rotate with the gear 510, so that the pull rope 514 is wrapped around the rotating shaft of the gear 510, so that the support block 515 moves and compresses the elastic member 513; the elastic thrust provided by the elastic member 513 to the push rod 512 is increased, prompting the push rod 512 to push the support rod 52 toward the inner side of the square-circle section module 6, so that the right-angle support member 51 is stably fitted with the right-angle mouth of the square-circle section module 6; and a rubber block is installed in the fitting area between the moving member 58 and the square-circle section module 6.

[0039] In this embodiment, two sets of limit members 54 are slidably provided under the support plate 53, and an elastic element is provided between the limit members 54 and the support plate 53; when the support plate 53 is placed above the square circle node module 6, the two sets of limit members 54 are located on the outside of the square circle node module 6, which are used to limit the position of the support plate 53.

[0040] like Figure 1 and Figure 2 As shown, the on-site forming method of large thick plate square and round sections is realized by using a large thick plate square and round section on-site forming support mechanism, and specifically includes the following steps:

[0041] S1. First, determine the size of the square circle section (square sky and round earth) and divide it into two square circle section modules 6 (i.e., divide it into two equal halves), use CAD to draw the expanded view of the square circle section (round sky and round earth) wall panel, and design the layout of the square circle section module 6 wall panel according to the divided square circle section module 6.

[0042] S2. Assemble and weld the wall panels of the square and circle section module 6 on platform 1 according to the layout drawing. After qualified welding, carry out appearance and non-destructive testing. After qualified inspection, lay out the layout line and the reinforcement assembly line, assemble and weld the reinforcement, weld the chain tightening ear plates near the upper and lower openings of the inner wall of the wall panels of the square and circle section module 6, and set two lifting ears near the upper opening.

[0043] like Figure 1 and Figure 2 As shown, S3, draw the ground circle axis and inner circle arc line of the square circle section on the platform 1, and weld a baffle (-100mm*200mm*10mm) every 200mm inside the inner circle arc line.

[0044] S4. Use a crane to lift the square and round section module 6, place it vertically on the platform 1, tighten the upper and lower fall chains 3 (the fall chains 3 are installed on the fall chain tightening ear plates), so that the square and round section module 6 is basically formed.

[0045] S5, square and round section module 6 ground round mouth forming:

[0046] like Figure 1and Figure 2 As shown, the inner side of the circle of the square circle section module 6 is placed on the outer side of the baffle on the platform 1, and the center point of the circle of the square circle section module 6 is first placed on the baffle, and the assembly fixture 2 and flat wedge are welded on the platform 1 (both are on the outer side of the square circle section module 6), and the square circle section module 6 is wedged with the flat wedge, and the fall chain 3 at the lower mouth of the square circle section module 6 is tightened, and then the second assembly fixture 2 and flat wedge (still on the outer side of the square circle section module 6) are welded at a position 200mm on both sides of the center point of the circle of the square circle section module 6, and then wedged in, the flat wedge weds the square circle section module 6, and the fall chain 3 at the lower mouth of the square circle section module 6 is tightened at the same time, and the wedge is tightened and matched, and the third and fourth ones are wedged in the same way, until the circle of the lower mouth of the square circle section module 6 is formed. During the process of forming the circle, the upper mouth (sky square) must also be carried out at the same time.

[0047] S6, square and round section module 6 (upper mouth) forming:

[0048] like Figure 1 and Figure 2 As shown, a fall chain 3 is installed at the center position of the square circle section module 6 (there are two groups of fall chains 3, one is connected to the inner walls of the upper and lower sides of the square circle section module 6, and the other is connected to the inner wall of the left side of the square circle section module 6), and the two groups of fall chains 3 are tightened simultaneously. When the square circle section module 6 (upper mouth) is basically formed after the tightening of the fall chains 3, an elastic strut 4 is arranged near the square circle section module 6 (the elastic strut 4 includes a sleeve and a support rod slidably inserted in the sleeve); while using the elastic strut 4, a straight-mouth assembly jig 5 is installed at a right angle to the square circle section module 6 (square mouth), and then a door-shaped clamping mouth is used to cooperate with the fall chain 3, the elastic strut 4, and the straight-mouth assembly jig 5 until the upper mouth of the square circle section module 6 meets the requirements of the drawing, and the fall chain 3 is released.

[0049] S7, assemble two sets of square and round section modules 6 on the platform 1, and use a gantry fixture to assemble them. After assembly, weld them, and after completion, fill in the uninstalled reinforcement ribs.

[0050] like Figure 2 As shown, the method of installing the straight-mouth assembly jig 5 at the right angle position of the square-circle section module 6 in step S6 is specifically to adjust the length of the telescopic connecting member 55, place the support plate 53 above the square-circle section module 6, and place the two sets of right-angle support members 51 at two right angles of the square-circle section module 6.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. On-site forming support mechanism for large thick plate square and round sections, characterized by: include: Straight mouth assembly mold (5); The straight-mouth assembly jig (5) comprises two groups of right-angle support members (51) and a support rod (52) installed between the two groups of right-angle support members (51), a telescopic connecting member (55) is provided above the support rod (52), and a supporting plate (53) is provided on the movable end of the telescopic connecting member (55); Wherein, a mounting plate (56) is installed at one end of the telescopic connecting member (55) away from the supporting plate (53), and the mounting plate (56) is slidably mounted on the supporting rod (52) so that the supporting rod (52) moves with the right-angle supporting member (51) along the length extension direction of the supporting rod (52); A push rod (512) perpendicular to the support rod (52) is provided on one side wall of the support rod (52); a connecting sleeve (511) is slidably sleeved on the outer end of the push rod (512); a support block (515) having the same moving path as the push rod (512) is slidably disposed in the connecting sleeve (511); an elastic member (513) is provided between the support block (515) and the push rod (512); The connecting sleeve (511) is provided with a sleeve (57) parallel to the support rod (52), and moving parts (58) are slidably inserted at both ends of the inner cavity of the sleeve (57), and a rack (59) is provided on the inner side end of the moving part (58). A gear (510) meshing with the rack (59) is provided in the sleeve (57), and a pull rope (514) connected to a support block (515) is provided on the gear (510) to drive the support block (515) to move closer to the push rod (512).

2. The large-scale thick plate square and round section on-site forming support mechanism according to claim 1 is characterized by: The support rod (52) comprises a mounting sleeve (521) and movable rods (522) slidably inserted into the two ends of the inner cavity of the mounting sleeve (521).

3. The large-scale thick plate square and round section on-site forming support mechanism according to claim 1 is characterized by: Two groups of limiting members (54) are slidably provided below the support plate (53), and elastic elements are provided on the limiting members (54) to drive the two groups of limiting members (54) to move closer together.

4. A method for forming a large thick plate square and round section on-site, which is realized by using the large thick plate square and round section on-site forming support mechanism according to any one of claims 1 to 3, characterized in that: The specific steps include: S1: Divide the square-circle section into two square-circle section modules (6), and design the layout of the wall panels of the square-circle section module (6); S2: assembling and welding the wall panels of the square and round section module (6) on the platform (1) according to the layout drawing, and welding the inverted chain tightening ear plates near the upper and lower openings of the inner wall of the wall panels of the square and round section module (6); S3: Draw the ground circle axis and the inner circle arc of the square circle section on the platform (1), and evenly weld a plurality of baffles inside the inner circle arc; S4: placing the square-circle section module (6) on the platform (1), installing the fall chain (3) on the fall chain tightening lugs at the upper and lower ends, and tightening the fall chain (3) at the upper and lower ends, so that the square-circle section module (6) is basically formed; S5: placing the square-circle section module (6) on the outside of the baffle plate, and making the center point of the ground circle of the square-circle section module (6) close to the baffle plate, welding the first set of assembly fixtures (2) and flat wedges on the platform (1) so that they are located on the outside of the square-circle section module (6), tightening the fall chain (3) at the lower end of the square-circle section module (6), and then welding the assembly fixtures (2) and flat wedges on the platform (1) in turn, and using the fall chain (3) at the lower end of the square-circle section module (6) to form the ground circle under the square-circle section module (6); S6: an elastic support rod (4) is arranged near the upper opening of the square-circle section module (6), and a straight-mouth assembly jig (5) is installed at a right angle to the square-circle section module (6). A door-shaped clamp is used to tighten the opening and cooperate with the fall chain (3) to form the square opening on the square-circle section module (6); S7: Assemble two sets of square and round section modules (6) on the platform (1) and perform welding.

5. The on-site forming method of large thick plate square and round sections according to claim 4 is characterized in that: The distance between two adjacent groups of baffles is 200 mm.

6. The on-site forming method of large thick plate square and round sections according to claim 4 is characterized in that: In step S2, after the wall panels of the square-circle section module (6) are welded on the platform (1) according to the layout diagram, the wall panels of the square-circle section module (6) are subjected to appearance and non-destructive testing. After passing the inspection, the layout line and the reinforcement rib assembly line are laid out, and the reinforcement ribs are assembled and welded.

7. The on-site forming method of large thick plate square and round sections according to claim 4 is characterized in that: The method of installing the straight-mouth assembly jig (5) at the right angle position of the square-circle section module (6) in step S6 is specifically to adjust the length of the telescopic connecting member (55), place the support plate (53) above the square-circle section module (6), and place the two groups of right-angle support members (51) at two right angles of the square-circle section module (6).

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