CN111382471A

CN111382471A - BIM-based composite air duct product production management system

Info

Publication number: CN111382471A
Application number: CN201910945205.XA
Authority: CN
Inventors: 刘桂平
Original assignee: Tianjin Octopus Electromechanical Equipment Co ltd
Current assignee: Tianjin Octopus Electromechanical Equipment Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-07

Abstract

The invention relates to a BIM-based composite air duct product production management system.A composite air duct is an air duct structure which is formed by taking a composite heat-insulating material as a main material and cutting, bonding, splicing and assembling; the composite air duct production method comprises the steps of manufacturing an air duct sketch through an Autodesk review, manufacturing a single straight-tube air duct and a single special-shaped air duct on the basis of the sketch, guiding prefabricated manufacturing information into an Autodesk failure control system, and controlling the production process of the composite air duct through the Autodesk failure. The invention has the beneficial effects that: the air duct production process is automated and intelligentized; firstly, a sketch with composite requirements is formulated according to field requirements, and then sketch data is led into a BIM system to realize the manufacturing processes of accurate blanking, bending and fixing of the air pipe through the data control of production line machinery; in addition, the manufacturing process of the air pipe can be simulated in advance, so that the manufacturing process is optimized to the maximum extent, and the possibility of misoperation is reduced.

Description

BIM-based composite air duct product production management system

Technical Field

The invention belongs to the field of air pipe preparation, and particularly relates to a BIM-based composite air pipe product production management system.

Background

The air pipe is a pipeline system for air conveying and distribution, and is generally formed by assembling a plurality of sections of air pipe monomers, and because the air pipe is generally longer, the firmness of the air pipe is a key factor for determining the service life of the air pipe in the assembling process. In addition, in order to realize reasonable and transmission routes in different environments, various special structure styles can exist in each air pipe unit, so that the special structure is manufactured and requires mature experience and manufacturing process, and errors are easy to occur, so that the special-shaped pipe body becomes a weak link of the whole air pipe.

Disclosure of Invention

In order to solve the technical problem, the invention provides a BIM-based composite air duct product production management system.

The technical scheme adopted by the invention is as follows: the production method of the composite air duct comprises the following specific steps:

firstly, manufacturing a draft of an air duct;

step two, preparing the composite insulation board into a single air pipe according to an air pipe sketch;

step three, preparing a flange;

and fourthly, assembling and fixing one or more single air pipes and a corresponding number of flanges to form the composite air pipe.

Preferably, in the second step, the monomer air duct is a rectangular straight air duct, a T-shaped rectangular air duct, a rectangular bent pipe, a rectangular reducer or a rectangular bifurcated pipe.

Wherein, the concrete preparation steps of the monomer air duct in the step two are as follows:

step a1 lofting: cutting and blanking the composite insulation board according to a draft of an air duct, and making a groove mark on the cut board;

step a2 cutting and bending: cutting and slotting the plate according to the slotting marks, and bending the plate with a bent surface in a bending area by using a bending press;

step A3 forming: and gluing the cut surfaces, bonding the cut surfaces at the slotting position, and bending and fixing the plate into the single air pipe.

Preferably, the flange in the third step is a PVC groove-shaped closed flange or an aluminum alloy bridge-cut-off heat-insulation flange, and the flange is connected in a trapezoidal joint mode.

Preferably, step four

Before assembly, reinforcing the single air pipes according to the side length of the air pipes;

when the side length of the air pipe is larger than 400mm, plane reinforcement is adopted; and when the side length is 250-400mm, angle reinforcement is adopted.

A composite air duct product production management system based on BIM is characterized in that an air duct sketch is manufactured by an Autodesk review in a galvanized sheet composite air duct production method, and the production process of the galvanized sheet composite air duct is controlled by Autodesk simulation.

The specific process is as follows:

step S1, constructing a primary BIM model through Autodesk Revit according to the preparation requirement of the composite air duct;

step S2, checking and adjusting the primary BIM model, and confirming the secondary BIM model;

step S3, preparing a prefabricated product, carrying out secondary model adjustment according to product formation, and determining a final BIM model;

and step S4, importing the product information standard into an Autodesk Fabric control system, and generating a prefabricated product library in the BIM through the interaction module product information standard.

The product prefabricating and processing steps are as follows:

step S5, generating a prefabricated product according to the final BIM model information;

step S6, length optimization is carried out on the prefabricated product, and the consistency of the product specification form of the enterprise and the BIM model is realized;

step S7, the optimized model information is converted into processing machine data;

and step S8, transmitting the data to the matched production equipment to cut and blank the galvanized sheet.

Preferably, the prefabricated product is encoded in step S5, and the encoded information corresponds to the formed pipe fittings one by one.

The invention has the advantages and positive effects that:

1, the air duct production process is automated and intelligentized; firstly, a sketch with composite requirements is formulated according to field requirements, and then sketch data is led into a BIM system to realize the manufacturing processes of accurate blanking, bending and fixing of the air pipe through the data control of production line machinery; in addition, the manufacturing process of the air pipe can be simulated in advance, so that the manufacturing process is optimized to the maximum extent, and the possibility of misoperation is reduced;

2, the production line has high degree of mechanization and automation, greatly improves the manufacturing efficiency and the manufacturing precision of the air pipe, and reduces the construction cost; the air pipe is automatically ribbed, the strength is high, the appearance is attractive and tidy, and a zinc layer is not damaged; the production and installation are quick, the labor intensity is reduced, the labor efficiency is improved, the requirements of modern engineering are met, and the competitive advantage of installation units is improved;

the scheme 3 has the advantages of standardized construction, convenience and rapidness, material cost reduction and realization of the advancement and scientificity of the standard process; the manufacturing and mounting process of the composite air duct is strict and serious, the appearance is good, the weight is light, and the hoisting is convenient.

Drawings

FIG. 1 is a schematic view of a planar reinforcing structure according to an embodiment of the present invention; 1. reinforcing the supporting piece;

FIG. 2 is an exploded view of a planar reinforcing structure according to one embodiment of the present invention; 11. the bolt comprises a self-tapping screw 12, a rubber gasket 13, a gasket 14, a bolt outer top disc 15, a bolt inner top disc 16 and a reinforcing rod;

FIG. 3 is a schematic view of a corner reinforcing structure according to an embodiment of the present invention; 21. flange, 22, right angle gasket.

Detailed Description

An embodiment of the present invention will be described below with reference to the drawings.

The composite air duct production method is characterized in that a composite heat-insulating material is used as a main material, a special manufacturing tool is adopted, the heat-insulating plates are conveniently and quickly cut, spliced and spliced on a construction site according to the physical properties and the chemical properties of the composite air duct, sealant is coated on the inner joints of the air duct to manufacture the air duct, and then the air duct system is formed by special flanges, other parts and accessories. The preparation method comprises the following steps:

firstly, manufacturing an air duct sketch according to manufacturing requirements, drawing a processing sketch according to a system served by an air duct according to a construction drawing and actual field conditions (air duct elevation, trend and other professional coordination conditions), numbering according to the system, and carrying out datamation on the manufacturing process of the air duct through corresponding data;

carrying out site technical bottom-crossing and safe bottom-crossing on constructors; decomposing a construction drawing of the air duct, determining the installation positions of air conditioning equipment and each part of the air duct, and disassembling an air duct system into a straight air duct, an elbow, a reducing pipe, a tee joint, a four-way joint and the like; determining the reasonable length and the number of each straight air pipe and each special pipe; determining the connection mode and corresponding connection accessories of the air pipe, the air conditioning equipment and each part of the air pipe; determining a reinforcing mode of the air pipe; calculating the consumption of the plates; checking the use amount of various auxiliary materials according to the splitting condition of the air pipe and by combining a main and auxiliary material proportioning table;

step two, preparing the composite insulation board into a single air pipe according to an air pipe sketch; preparing a single air pipe through lofting, cutting, bending and forming processes;

step three, preparing a flange; generally, a bonding PVC groove type closed flange or an aluminum alloy bridge-cut-off heat insulation flange is adopted, and the flanges are connected in a trapezoidal joint mode;

and step four, assembling and fixing one or more single air pipes and a corresponding number of flanges through a flange structure to form the composite air pipe.

The air duct material can be phenolic aldehyde aluminum foil or other composite heat insulation materials, the side length of the rectangular air duct of the composite air duct is preferably more than or equal to 120 and less than or equal to 3000, and the ratio of the long side to the short side is not more than 4: 1.

the preparation method of the single straight pipe air pipe comprises the following steps:

and (3) lofting the rectangular straight air pipe, wherein the width of a common composite board supply board is 1200mm, the length of the common composite board supply board is 4m, and the lofting of the rectangular straight air pipe adopts a combination method according to the side length of the air pipe and the width of the board. The edge groove and the middle groove are changed along with the thickness of the plate, the middle groove is twice as wide as the edge groove, lofting sizes are different by using different combination methods, and the lofting size is calculated according to a combination mode specified by a wind pipe manufacturing task list; measuring the panel by using a straight steel ruler or a steel tape according to the calculated lofting size, and drawing a panel cut-off line, a V-shaped groove line and a 45-degree slope line on the panel by using a square aluminum alloy guiding rule and a painting brush; the single air pipes are rectangular straight air pipes, T-shaped rectangular air pipes, rectangular bent pipes, rectangular reducer pipes or rectangular bifurcated pipes, and the specific lofting preparation method can adopt the conventional common method;

and checking whether the lofting of the air duct plate meets the requirement of the air duct manufacturing task list, whether the marking is correct, and whether the plate is damaged. Check if the cutter blade is securely mounted. And checking whether the blade extending height meets the requirement. The extension height of the straight-cutter plane blade can cut off the plate without damaging the carpet on the table; the extension height of the single-knife planing blade and the double-knife planing blade can cut off the upper layer of aluminum foil and the core material without damaging the lower layer of aluminum foil. The distance between the two knives of the double-knife plane is about 2 mm. And selecting a left 45-degree single cutter plane or a right 45-degree single cutter plane according to the requirement of trimming. The plate is placed on a workbench, and the square aluminum alloy guiding rule is fixed in a proper position in parallel. Holding a cutter by hand, enabling the reference edge of the cutter to be close to the square aluminum alloy guiding rule, pressing a panel by a planing surface, aligning the reference line of the cutter to a lofting line, pushing the cutter forwards or pulling the cutter backwards, and cutting the panel by a straight planer; cutting edges of the plate by a single cutter plane; and (4) slotting the plate by a double-cutter planer. During angle cutting, the blade of the tool is required to be inclined 45 degrees leftwards or rightwards during installation, so that the cut V-shaped notch is 90 degrees and is convenient to be folded into a right angle. During cutting, the cutter is tightly attached to the guiding rule to ensure that the cut is straight and prevent cutting size errors. After the plate is cut into single air duct plates, the air duct plates are numbered to prevent the air duct plates of different air ducts from being mistakenly inserted.

And for the plate with the curved surface, bending the cut and blanked plate in a bending area by using a bending press. When the curved surface of the air pipe is pressed, the pressing distance is generally between 30 and 70 cm. When the radius of the inner arc is less than 150mm, the binding and pressing distance is 30 mm; when the radius of the inner arc is 150-300 mm, the binding and pressing distance is 35-50 mm; when the radius of the inner arc is larger than 300mm, the binding and pressing distance is 50-70 mm. The depth of the pricking is not more than 5 mm. And bending the plate, and pricking and pressing the required bent part by using a bending machine to enable the plate to have a V-shaped groove. After the plate is bent and formed, the joint between the plate and the main plate is as tight as possible, so that the air pipe is convenient to bond and form, and the bonding is firm.

Step A3 forming: gluing the cut surface, bonding the cut surface at the slotting position, and bending and fixing the plate into a single air pipe;

checking whether the air duct panel meets the design requirements according to the air duct manufacturing task list; cleaning the powder on the cutting surface of the plate, and removing oil stain, water stain and dust. Coating an adhesive on a cutting surface by using a brush; when the glue is not adhered, adhering the air duct panel according to the design requirement, and flattening by using a scraper; slightly hammering the part which is difficult to be strickled off by a wooden hammer; checking whether the joint bonding of the plates meets the quality standard; cleaning the surface of the plate to be adhered with the pressure-sensitive aluminum foil tape; adhering a pressure-sensitive aluminum foil tape to the joint of the plate from one end to the other end according to the centering position; the width of one side of the pressure-sensitive aluminum foil tape which is stuck on the pressure-sensitive aluminum foil tape is not less than 20 mm; scraping the adhesive tape by using a plastic scraper to ensure that the adhesive tape is firmly bonded; cleaning the inner four-corner edges of the air pipe to be glued; uniformly gluing the corner edges of the air pipes by using a sealing glue gun; compacting after the sealant is blocked; the quality of the air duct formed by bonding is checked by using a steel ruler and an angle ruler.

Before assembly, reinforcing the single air pipes according to the side length of the air pipes; when the side length of the air pipe is larger than 400mm, plane reinforcement is adopted; and when the side length is 250-400mm, angle reinforcement is adopted.

The plane reinforcement is to use a grinding wheel cutting machine to cut off a galvanized pipe, and to put 60mm long round battens at two ends of the galvanized pipe, and to fix round battens at two ends of the galvanized pipe, and to use a steel ruler to determine reinforcement points on the surface of the pipe according to design requirements, the reinforcement method is shown in figure 1 and figure 2, the reinforcement support 1 comprises an outer structure and an inner structure, the outer structure fixes a bolt outer top box 14 at the outer side of the pipe wall through a self-tapping screw 11, and is matched with a bolt inner top box 15 and a reinforcement rod 16 at the inner side, the self-tapping screw 11 is strung with a rubber gasket 12 and a gasket 13, the side length is larger than or equal to 2000mm, the outer reinforcement is added, the outer reinforcement is made into a hoop shape by adopting angle steel with the length of ∠ 30 x 3, and the reinforcement method only needs to reinforce one end of the pipe.

The air duct corner reinforcement is to paste galvanized right-angle gaskets 22 with the thickness of more than 0.75mm at the four corners of the air duct, as shown in fig. 3, the width of the right-angle gaskets 22 is equal to the thickness of the air duct plate, the side length is not less than 55mm, and the right-angle gaskets are inserted into the flanges 21.

Because the air duct production line and the construction site cannot be in the same place, the air duct production line and the construction site are processed into semi-finished products according to drawn sketches in a workshop, numbered according to a system, and assembled according to the serial numbers on the site.

The pipe section connection of the composite board air pipe, the connection of the air pipe with a valve component and equipment can adopt bonding, a PVC flange or an aluminum alloy flange, and the flange preparation adopts a trapezoidal joint mode for connection; when the length of the inner side of the air pipe is less than 500mm, the two ends of the single air pipes to be connected are obliquely cut at 45 degrees and are bonded, and the aluminum foil adhesive tape is used for further bonding and reinforcing the outer sides of the single air pipes; when the inner side length of the low-pressure air pipe is less than 2000mm and the inner side length of the medium-pressure air pipe and the high-pressure air pipe is less than 1600mm, the groove-shaped plug-in piece PVC flange is adopted for connection or the I-shaped plug-in piece PVC flange is adopted for connection, and when the inner side length of the air pipe is 2000-3000mm, the I-shaped plug-in piece aluminum alloy flange is adopted for connection; when the air pipe is connected with a valve component or equipment, an H-shaped connecting flange made of PVC or aluminum alloy can be used for connection. When the PVC and aluminum alloy forming connecting piece is selected, the wall thickness of the connecting piece is required to be noticed, and the wall thickness of the inserting flange piece is required to be larger than or equal to 1.5 mm. When the air pipe plate and the flange (or other connecting pieces) are connected in an inserting way, the interference magnitude of the thickness of the pipe plate and the width of the groove of the flange (or other connecting pieces) should be 0.1-0.5 mm, and the surface of the plug-in piece should be fully coated with the adhesive. The joints at the four corners of the flange are smooth, the unevenness is less than or equal to 1.5mm, and the inner edges of the joints are filled with sealing glue. When the side length of the low-pressure air pipe is more than 2000mm and the side length of the medium-high pressure air pipe is more than 1500mm, the air pipe flange is made of aluminum alloy materials.

The direct opening on the air pipe is connected with the branch air pipe by adopting a 90-degree connecting piece or other special connecting pieces, and sealant is coated at the four corners of the connecting piece; when the side length of the branch pipe is not more than 500mm, a 45-degree cut groove can be adopted for direct connection; the connection of the main air pipe and the flexible air pipe is realized by propping the annular seam allowance on the composite board and then pulling and fixing; the air pipe is connected with the components by an F flange.

Determining the trend and elevation of the air duct according to the requirements of a construction drawing before installation; after the air pipe is inspected to be manufactured and formed according to the sectional size, numbering and marking according to a system for installation; the size of the air pipe and whether the flange is installed correctly; whether the manufacturing allowable deviation of the air pipe and the flange meets the specification or not; before the air pipe is installed, the dust on the inner surface and the outer surface and impurities in the air pipe are removed.

And drilling an expansion trepanning on the air pipe bearing material according to the design requirement. The hanger rod is made of a full-thread screw. And (4) blanking the suspender by using a grinding wheel cutting machine according to the requirement of the hoisting height, and installing the suspender. And blanking and drilling the cross arm according to design requirements, and performing anticorrosion treatment. Hoisting the air pipe, installing a cross arm and a shockproof pad under the air pipe, and fixing the cross arm by using a flat pad, an elastic pad and a nut. And installing and connecting air pipes and ventilation system components according to design requirements. And carrying out adiabatic heat treatment on the metal flange and the metal ventilation component.

A composite air pipe product production management system based on BIM is characterized in that an air pipe sketch is manufactured by an automatic desk review in the composite air pipe production method, a single straight-pipe air pipe and a single special-shaped air pipe are manufactured on the basis of the sketch, prefabricated manufacturing information is led into an automatic desk failure control system, and the composite air pipe production process is controlled through the automatic desk failure. The process is as follows:

The product prefabricating and processing steps are as follows:

step S5, generating a prefabricated product according to the final BIM model information, and coding the produced prefabricated product, wherein the coding information corresponds to the formed pipe fittings one by one;

The practical operation profile comprises the following steps: data collection, data sorting and analysis, difficult and complicated question answering, building of a BIM model, collision check of an integral model, submission of a collision report, design consultation, adjustment scheme issuing, adjustment of the BIM model, collision check of the integral model, confirmation of the BIM model, manufacturing of a prefabricated product, secondary adjustment of the model according to product formation, secondary confirmation of the BIM model, prefabricated processing of the product, issuing of data such as a product installation drawing and the like, and field construction and installation.

Wherein the product prefabricating and processing process is as follows:

1 prefabrication and preparation work: the application software Autodesk fibre manufacturing CAMduct can provide the user with tools for manufacturing HVAC ducts through innovative interfaces and comprehensive parameterized component libraries. Meanwhile, operation input sites can be added, so that the whole production process is accelerated. The Autodesk fabric CAMduct software sets air duct product parameters according to characteristics of air duct production equipment, and sets the air duct product parameters respectively according to the plate, the air duct form and the connection mode.

2, prefabricating and processing steps: performing product prefabrication treatment by using a BIM model;

loading a prefabricated part in the BIM, selecting a set sample plate, adding a corresponding air pipe system type, and loading a prefabricated service; selecting a pipeline system to be prefabricated, generating a prefabricated product, and selecting the type of the pipeline system; optimizing the length of the prefabricated product to realize the consistency of the product specification form of the enterprise and the BIM model; converting each optimized part into a product; transferring the processed model into processing machine data; processing the data through prefabricated processing machine software; typesetting the prefabricated product, adjusting the typesetting of the prefabricated product, and inputting the prefabricated product into a machine for cutting according to a drawing; in order to facilitate later transportation and installation, the prefabricated product needs to be coded; and the known drawings for transportation and installation are provided, and the completeness and integrity of transportation are ensured. The installation process has guidance basis, and the construction task can be completed quickly and conveniently.

Example (b):

the production management method of the composite air duct product based on the BIM comprises the following specific preparation methods:

step 1, constructing a primary BIM model through Autodesk Revit according to the preparation requirement of the composite air duct;

step 2, checking and adjusting the primary BIM model, and confirming the secondary BIM model;

step 3, preparing a prefabricated product, carrying out secondary model adjustment according to product formation, and determining a final BIM model;

step 4, importing the product information standard into an Autodesk failure control system, and generating a prefabricated product library in a BIM (building information modeling) through the product information standard of an interaction module;

step 5, generating a prefabricated product according to the final BIM model information, and coding the produced prefabricated product, wherein the coding information corresponds to the formed pipe fittings one by one;

step 6, optimizing the length of the prefabricated product to realize the consistency of the product specification form of the enterprise and the BIM model;

step 7, converting the optimized model information into processing machine data;

step 8, transmitting the data to matched production equipment;

step 9, cutting and blanking the composite heat-insulating material to respectively form a single straight tube air duct plate and a single special-shaped tube air duct plate, and making a groove mark on the cut plate;

step 10, cutting and slotting the plate according to the slotting marks, and bending the plate with a bent surface in a bending area by using a bending press; gluing the cut surface, bonding the cut surface at the slotting position, and bending and fixing the plate into a single air pipe;

step 11, reinforcing the single air pipes according to the size of the composite air pipes;

step 12, adhering and fixing the flange structures at the ends of the single air pipes, and realizing the connection of the single air pipes through the connection of the flange structures;

and step 13, sealing all the joints of the composite air pipe by using sealant.

By adopting the method, various processes are completed through a full-automatic assembly line, the production efficiency is high, the size is accurate, and the forming quality is good. The air leakage rate is obviously reduced, the energy is saved, the running cost of the main engine is reduced, and the long-term stability can be kept. The BIM-based production mode has the advantages that the production automation degree is high, the labor intensity is reduced, the labor efficiency is improved, the labor cost is reduced, and the requirements of modern engineering are met; and the installation and operation are simple, convenient and quick, the construction period can be shortened, the progress of engineering construction can be accelerated, and the noise pollution generated by manufacturing the air pipes on the construction site is reduced, so that the civilized construction is facilitated.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. The production method of the composite air duct is characterized by comprising the following steps: the preparation method comprises the following steps:

firstly, manufacturing a draft of an air duct;

step three, preparing a flange;

2. The method for producing a composite air duct according to claim 1, wherein: and in the second step, the monomer air pipes are rectangular straight air pipes, T-shaped rectangular air pipes, rectangular bent pipes, rectangular reducer pipes or rectangular bifurcated pipes.

3. A method for producing a composite air duct according to claim 2, characterised in that: the concrete preparation steps of the monomer air duct in the step two are as follows:

4. The method for producing a composite air duct according to claim 1, wherein: and the flanges in the third step are PVC groove-shaped closed flanges or aluminum alloy bridge-cut-off heat-insulation flanges, and the flanges are connected in a trapezoidal joint mode.

5. A method according to any one of claims 1-4, characterised in that: in the fourth step

6. BIM-based composite air duct product production management system is characterized in that: the method for producing a galvanized sheet composite air duct according to any one of claims 1 to 5, wherein an air duct sketch is made through Autodesk review, and the production process of the galvanized sheet composite air duct is controlled through Autodesk simulation.

7. The BIM-based composite air duct product production management system of claim 6, wherein: the specific process is as follows:

8. The BIM-based composite air duct product production management system of claim 7, wherein: the product prefabricating and processing steps are as follows:

9. The BIM-based composite air duct product production management system of claim 8, wherein: and in the step S5, the produced prefabricated product is coded, and the coded information corresponds to the formed pipe fittings one by one.