CN116654208A - Double-wall round pipe pillar and manufacturing method thereof - Google Patents
Double-wall round pipe pillar and manufacturing method thereof Download PDFInfo
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- CN116654208A CN116654208A CN202310499376.0A CN202310499376A CN116654208A CN 116654208 A CN116654208 A CN 116654208A CN 202310499376 A CN202310499376 A CN 202310499376A CN 116654208 A CN116654208 A CN 116654208A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 48
- 238000003466 welding Methods 0.000 claims abstract description 81
- 238000005520 cutting process Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/04—Stanchions; Guard-rails ; Bulwarks or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2221/00—Methods and means for joining members or elements
- B63B2221/02—Methods and means for joining members or elements by welding
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- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a double-wall round pipe pillar and a manufacturing method thereof, comprising an inner pipe and an outer pipe; the inner tube is a hollow round tube; the outer tube comprises a plurality of arc tube plates, and the arc tube plates are surrounded on the outer part of the inner tube; and a pipe seam is formed between the adjacent arc-shaped pipe plates, a welding body is arranged in the pipe seam, and the adjacent arc-shaped pipe plates and the inner pipe are fixed through the welding body. The double-wall round tube pillar is characterized in that a large round tube is used as an outer tube, a small round tube is used as an inner tube, the large round tube is cut to form a plurality of arc tube plates, the outside of the small round tube is sleeved with the arc tube plates, then welding is carried out, fixation between the arc tube plates and fixation between the arc tube plates and the small round tube inside are achieved, and the double-wall round tube pillar is formed. The double-wall round pipe strut has the advantages that the structural strength is improved, the round pipe for manufacturing the strut is convenient to purchase, the weight is increased little, and the space and strength requirements of ships are met. The manufacturing method of the double-wall round pipe strut is high in efficiency.
Description
Technical Field
The invention relates to the technical field of ship manufacturing, in particular to a double-wall round pipe support and a manufacturing method of the double-wall round pipe support.
Background
Between two adjacent decks of the vessel, a strut is required to support the loading of equipment, personnel on the upper deck. In the related art, a hollow pipe is generally adopted as a ship strut, but the hollow pipe has limited strength and cannot meet higher stress requirements.
When having higher requirement to pillar structural strength, some boats and ships are through increasing the quantity of hollow tube to increase cabin structural strength, can reduce cabin inner space like this, when the pillar is more in the cabin, influence pedestrian, vehicle and pass through, influence the equipment setting in the ship, influence the sight.
Disclosure of Invention
The aim of the embodiment of the invention is that: a double-wall round pipe column and a method for manufacturing the same are provided, wherein the double-wall round pipe column is formed by assembling large and small round pipe columns, so as to improve the column strength.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a double-wall round pipe pillar comprises an inner pipe and an outer pipe;
the inner tube is a hollow round tube; the outer tube comprises a plurality of arc tube plates, and the arc tube plates are surrounded on the outer part of the inner tube; a pipe seam is formed between the adjacent arc-shaped pipe plates, a welding body is arranged in the pipe seam, and the adjacent arc-shaped pipe plates and the inner pipe are fixed through the welding body
Optionally, the outer tube comprises two arc tube plates, and the two arc tube plates comprise a first half tube and a second half tube; one side of the first half pipe is fixed with the second half pipe through a first welding body, and the other side of the first half pipe is fixed with the second half pipe through a second welding body.
Optionally, the number of the arc tube plates in the outer tube is two or four.
Optionally, the first half pipe and the second half pipe are symmetrical about a central axis of the inner pipe, an inner wall of the first half pipe abuts against an outer wall of the inner pipe, and an inner wall of the second half pipe abuts against an outer wall of the inner pipe.
Optionally, the end surface in the length direction of the arc tube plate is flush with the end surface in the length direction of the inner tube.
A method for manufacturing a double-wall round pipe pillar, which is used for manufacturing the pillar according to the scheme; the manufacturing method of the double-wall round pipe strut comprises the following steps:
cutting: cutting along the length direction of the large circular tube to form a plurality of arc tube plates;
and (3) welding: the arc tube plates are circumferentially surrounded on the outer part of the small round tube, and welding is carried out at the tube seam between the adjacent arc tube plates to form the double-wall round tube pillar; the small round tube is the inner tube, and the outer tube is formed after a plurality of arc tube plates are welded.
Optionally, an assembly step is further included, the assembly step being performed between the cutting step and the welding step;
the assembling step comprises the following steps: installing a plurality of arc tube plates at intervals along the circumferential direction of the inner tube, and reserving a tube gap between adjacent arc tube plates;
the welding step comprises the following steps: and welding the pipe joints along the length direction of the inner pipe, so as to form welding bodies for fixing the adjacent arc-shaped pipe plates and fixing the arc-shaped pipe plates and the inner pipe at the pipe joints.
Optionally, in the cutting step, the large round tube is cut to form two symmetrical arc tube plates.
Optionally, in the cutting step, the large round tube is cut to form two symmetrical arc tube plates.
Optionally, the method further comprises a tube moving step; the tube moving step is performed between the cutting step and the assembling step;
in the cutting step:
the used support frame comprises two half frame bodies, the two half frame bodies can move away from each other or approach each other, each half frame body comprises a half groove, and the two half frame bodies form the arc-shaped groove when being combined;
in the tube moving step:
after the large round tube is cut into two arc tube plates, the half frame body is moved to separate the two half frame bodies, so that the two arc tube plates are separated;
moving the small round tube between the two half frame bodies;
and moving the half frame bodies to enable the two half frame bodies to be close to each other, and enabling the two arc tube plates to be respectively sleeved on the left side and the right side of the small round tube.
The beneficial effects of the invention are as follows: the double-wall round tube pillar is characterized in that a large round tube is used as an outer tube, a small round tube is used as an inner tube, the large round tube is cut to form a plurality of arc tube plates, the outside of the small round tube is sleeved with the arc tube plates, then welding is carried out, fixation between the arc tube plates and fixation between the arc tube plates and the small round tube inside are achieved, and the double-wall round tube pillar is formed. The double-wall round pipe strut has the advantages that the structural strength is improved, the round pipe for manufacturing the strut is convenient to purchase, the weight is increased little, and the space and strength requirements of ships are met. The manufacturing method of the double-wall round pipe pillar is used for manufacturing the pillar.
Drawings
The invention is described in further detail below with reference to the drawings and examples.
FIG. 1 is a cross-sectional view of a double-walled circular tube strut according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1;
FIG. 3 is a schematic cross-sectional view of a large round tube and a small round tube used in the double-walled round tube strut according to the embodiment of the present invention;
FIG. 4 is a schematic view of a large round tube being cut during the manufacturing process of a double-wall round tube post according to an embodiment of the present invention;
FIG. 5 is a schematic view of assembling a plurality of arc tube sheets with a small round tube during the manufacturing process of a double-wall round tube pillar according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a support frame used in the method for manufacturing a double-walled circular tube pillar according to the embodiment of the present invention, wherein two half frame bodies of the support frame in fig. 6 (a) are in a combined state, and two half frame bodies of the support frame in fig. 6 (b) are in a separated state.
FIG. 7 is a schematic diagram showing a cutting step of a method for manufacturing a double-walled circular tube pillar according to an embodiment of the present invention;
FIG. 8 is a schematic view of a tube moving step of a method for manufacturing a double-walled circular tube post according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a welding step of a method for manufacturing a double-wall round pipe strut according to an embodiment of the present invention.
In the figure: 10. an inner tube; 20. an outer tube; 21. arc tube plate; 22. a welded body; 30. a small round tube; 40. a large round tube; 41. a pipe seam; 50. a support frame; 501. an arc-shaped groove; 502. a groove portion; 51. a half frame body; 60. a tube support.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "affixed" and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the areas of special ships such as ship, passenger ship, luxury post wheel, etc., the indoor wide span position is designed with uniformly distributed struts to support the weight of each upper layer structure, equipment and personnel due to the requirement of strength. In ships, hollow tubes are generally used as struts in superstructure structures of ships. However, hollow round tubes sometimes fail to meet higher structural strength requirements. In order to improve the structural strength of the ship superstructure, solid arc tube plates can be adopted, or the number of hollow round tubes can be increased. However, the solid arc tube plate has larger weight and is easy to influence the gravity center of the ship superstructure. The number of the hollow round tubes is increased, so that the indoor space is occupied, the arrangement of facilities and equipment in the ship around the support column is influenced, the indoor passing of people or objects is influenced, and the sight is influenced.
The invention provides a double-wall circular tube support column and a manufacturing method thereof, aiming at solving the problems of limited structural strength of a ship support column, difficulty in purchasing support column materials, limited space on a ship and the like in the related art.
Referring to fig. 1 to 5, the double-walled circular tube pillar includes an inner tube 10 and an outer tube 20. The inner tube 10 is a small round tube 30, and the outer tube 20 includes a plurality of arc tube plates 21 cut from a large round tube 40, and a welding body 22 for fixing the inner tube 10 of the arc tube plates 21. The term "plurality" means two or more, and the term "plurality" includes two.
Wherein a plurality of arc tube plates 21 are enclosed outside the inner tube 10; a tube seam 41 is formed between the adjacent arc tube plates 21, a welding body 22 is arranged in the tube seam 41, and the welding body 22 is a structure formed by solidifying welding materials. The adjacent arc tube plates 21 and the inner tube 10 are fixed through the welding bodies 22, in other words, the welding bodies 22 in one tube seam 41 realize the fixation between the two arc tube plates 21 and the three members of the inner tube 10.
In the manufacturing method of the double-wall round pipe pillar, two kinds of pipe fittings of a large round pipe 40 and a small round pipe 30 are purchased, the large round pipe 40 and the small round pipe 30 are hollow round pipes, and the outer diameter of the small round pipe 30 is smaller than the inner diameter of the large round pipe 40. Cutting the large round tube 40 to obtain a plurality of arc tube plates 21, sleeving the arc tube plates 21 outside the small round tube 30, reserving gaps between the adjacent arc tube plates 21 to form tube seams 41, welding the tube seams 41 along the length direction of the small round tube 30 by using a welding machine, and forming the double-wall round tube support post after all the tube seams 41 are welded.
In the double-wall round pipe pillar, the small round pipe 30 positioned at the inner side is taken as the inner pipe 10, and the plurality of arc-shaped pipe plates 21 positioned at the outer side form the outer pipe 20 after being welded and connected, so that the double-wall round pipe pillar has an inner-outer double-layer structure, and the whole double-wall round pipe pillar is still of a hollow structure, but has larger pipe wall thickness, so that the structural strength of the pillar can be increased, and the section modulus of the pillar can be improved.
When manufacturing ships, hollow tubes for struts are generally purchased outwards, the types of hollow tubes on the market are limited, and when the outer diameter of a certain type of pipe fitting meets the requirements, the wall thickness of the pipe fitting cannot meet the requirements.
In the invention, the large circular tube 40 and the small circular tube 30 can be directly purchased, and the large circular tube 40 is assembled and welded with the small circular tube 30 after being cut, so that the double-wall hollow circular tube can be obtained. The double-wall hollow round tube is used as a pillar, can be directly purchased, and then assembled and welded.
The double-wall round pipe strut can be obtained by adding a small hollow round pipe to be purchased as the inner pipe 10 on the basis of taking a hollow round pipe which is originally used as the strut as the outer pipe 20 and reasonably combining and installing the large round pipe 40 and the small round pipe 30.
The outer dimension and the appearance of the double-wall circular pipe support post are the same as those of the original support post, so that the double-wall circular pipe support post can increase the structural strength of the support post under the condition of not changing the number of the original ship indoor support posts, the position layout of the support posts and the outer dimension of the support post compared with the original hollow circular pipe support post.
The double-wall round pipe strut provided by the invention can directly purchase market stock without customizing strut pipe fittings under the premise of ensuring that the peripheral arrangement space of the strut in the upper building cabin of the ship is not influenced, and the strut weight is not increased too much, so that the cost is controllable, and the strut can meet the space requirement and the structural strength requirement when being applied to the ship by combining and installing the components.
In one embodiment, the large round tube 40 has the same wall thickness and different diameters from the small round tube 30, in other words, the inner tube 10 has the same wall thickness as the arc tube sheet 21. Therefore, when purchasing round pipes, the round pipes with the same wall thickness and different sizes are purchased, raw materials are convenient to obtain, and special customization is not needed.
In an embodiment, no matter how many arc tube plates 21 the outer tube 20 comprises, the outer tube 20 is configured to have the same structure as the plurality of arc tube plates 21, so that the overall structural strength of the strut is conveniently ensured to be uniform. In other words, the dimensions of each arc tube plate 21 in the circumferential direction of the strut are the same, and the width of each arc tube plate 21 is the same, so as to ensure that each arc tube plate 21 uniformly transmits the stress between the upper deck and the lower deck, and avoid that the stress of different arc tube plates 21 affects the structural strength of the strut.
In one embodiment, the outer tube 20 comprises two arcuate tube sheets 21, the two arcuate tube sheets 21 comprising a first tube half and a second tube half; one side of the first half pipe is fixed with the second half pipe through a first welding body 22, and the other side of the first half pipe is fixed with the second half pipe through a second welding body 22.
The first half pipe and the second half pipe are formed by cutting the same hollow round pipe.
In one embodiment, when the larger tube 40 is used when the struts are manufactured, the larger tube 40 may be cut twice to obtain three curved tube sheets 21. Thus, in the manufacture of the post, it is necessary to weld the three tube seam 41 locations, and the double-walled circular tube post includes three welded bodies 22 formed of a welding material. The adoption of the outer tube 20 comprising the struts of the three arc tube plates 21 increases the welding position, increases the welding connection area between the outer tube 20 and the inner tube 10, and can ensure that the large round tube 40 with larger diameter can be firmly welded and fixed with the inner view after being cut, thereby ensuring the overall structural strength of the struts.
In one embodiment, the total number of arc tube sheets 21 in the struts is two or four.
When the strut is applied to a ship building structure, the strut is fixed between an upper deck and a lower deck. Each deck includes a deck body, and cross members and longitudinal members secured to the main deck body. The longitudinal members are arranged longitudinally along the vessel and the transverse members are arranged transversely along the vessel, the longitudinal members mainly carrying longitudinal forces to ensure deck longitudinal strength and the transverse members mainly carrying transverse forces to ensure deck transverse strength. Wherein, the width direction of the ship is the transverse direction of the ship, and the length direction of the ship is the longitudinal direction of the ship. The longitudinal members may be, but are not limited to stringers, longitudinal bones; the longitudinal component is used for bearing the total longitudinal bending moment of the ship and guaranteeing the total longitudinal strength. The transverse members are generally called beams and can be divided into common beams, half beams, hatch end beams and strong beams according to the positions and the sizes of the beams, and the transverse members are used for guaranteeing the transverse strength of the ship body. The general deck can be divided into a transverse skeleton structure in which a transverse member is used as a main bearing member and a longitudinal skeleton structure in which a longitudinal member is used as a main bearing member.
The struts are arranged at the staggered positions of the transverse members and the longitudinal members, so that the decks can be effectively supported by the struts, and the stress transmission effect of the upper deck and the lower deck is improved.
When the outer tube 20 in the column comprises two arc tube plates 21, two weld seams, i.e. two welded bodies 22, are formed on opposite sides of the column, respectively. When the double-wall round pipe support column is installed, the welding body 22 can be transversely or longitudinally inclined relative to the ship so as to avoid the transverse or longitudinal arrangement of the welding body 22; or, for the transverse skeleton structure, the welding bodies 22 at two sides are longitudinally arranged, namely, the welding bodies 22 at two sides are adjusted to be positioned at the left side and the right side of the support column, so that the effect of the welding seams on the transverse stress transmission is avoided, and the effect of the transverse stress transmission of the support column is ensured; for the longitudinal skeleton structure, the welding bodies 22 at two sides are transversely arranged, namely, the welding bodies 22 at two sides are adjusted to be positioned at the front side and the rear side of the support column, so that the effect of longitudinal stress transfer is prevented from being influenced by welding seams, and the effect of longitudinal stress transfer of the support column is ensured.
When the outer tube 20 of the strut comprises four arc tube plates 21, the strut comprises four weld joints, which can be adjusted to 45 degrees with respect to the vessel transverse direction and the vessel longitudinal direction. To reliably transfer upper and lower deck stresses through the arcuate tube sheets 21.
In other words, the outer tube 20 of the double-wall round tube pillar is configured to comprise two or four arc tube plates 21, so that the angle of the pillar can be conveniently adjusted according to the transverse member and the longitudinal member on the deck of the ship, the pillar can reliably transmit stress, the stress concentration is avoided, and the structural strength of the pillar is ensured.
In an embodiment, the inner wall of the arc tube plate 21 of the outer tube 20 abuts against the inner tube 10, so that the force can be transmitted between the inner tube 10 and the arc tube plate 21 through contact, the whole stress uniformity of the strut is ensured, and the structural strength and the bending resistance of the strut are improved.
In fig. 1, the first half tube and the second half tube are symmetrical about the central axis of the inner tube 10, in other words, the two arc tube plates 21 are symmetrical about the central axis of the inner tube 10, so that the symmetry of the two welding seams is ensured, and the stress symmetry of the support column is ensured. Moreover, the inner wall of the first half pipe is abutted against the outer wall of the inner pipe 10, and the inner wall of the second half pipe is abutted against the outer wall of the inner pipe 10, so that the transmission of internal force between the first half pipe and the inner pipe 10 and between the second half pipe and the inner pipe 10 is ensured.
In one embodiment, the outer tube 20 includes a first half tube and a second half tube that are symmetrically disposed. In order to strengthen the connection strength between the two half pipes and the inner pipe 10, plug welding is performed at the intermediate position of the first half pipe with the plug welding holes being spaced apart in the length direction, and correspondingly, plug welding is performed at the intermediate position of the second half pipe with the plug welding holes being spaced apart in the length direction. When two half pipes are arranged on the left side and the right side of the inner pipe 10, plug welding holes are formed on the left side and the right side of the support column at intervals along the length direction, welding materials are filled in the plug welding holes to achieve welding fixation between the half pipes and the inner pipe 10, pipe seams 41 between the half pipes are formed on the front side and the rear side of the support column, and welding materials are filled in the pipe seams 41 to achieve welding fixation between the half pipes and the inner pipe 10. Therefore, in the strut of the invention, the welding fixation between the two sides of the half pipe and the inner pipe 10 can be realized at the middle position of the half pipe, and the overall structural strength of the strut is high.
The half tube is the arc tube plate 21.
In one embodiment, plug welding holes are formed in the area between the 1/4 position and the 3/4 position of the length dimension of the first half pipe and the second half pipe, so that the plug welding holes are prevented from being formed near the ends of the half pipes, and when the support posts are arranged between the upper deck and the lower deck, the integrity and the partial integrity of the arc-shaped pipe plates 21 close to the decks are ensured, and the structural strength is ensured.
In one embodiment, for ease of manufacturing, the weld groove is cut simultaneously when cutting the large round tube 40, in other words, a groove is formed between adjacent two of the arc tube plates 21. Thus, when the strut includes two arc tube plates 21, the two arc tube plates 21 are disposed on opposite sides of the first symmetry plane of the strut, and the side walls in the circumferential direction of the arc tube plates 21 are inclined with respect to the first symmetry plane. When the large round pipe 40 is cut, four cuts (the position indicated by the arrow in the figure is the cutting position) are performed, and each cut is completed once, and beveling is performed when each cut, so that after the two half pipes are sleeved outside the inner pipe 10, a welding groove is formed between the inclined pipe side walls of the two half pipes, so that welding is facilitated. The welding groove is the pipe seam 41, and the two side walls of the pipe seam 41 incline.
In one embodiment, the end surfaces of the arc tube plates 21 in the length direction are flush with the end surfaces of the inner tube 10 in the length direction. Thus, when the outer tube 20 and the inner tube 10 of the strut are arranged between the upper deck and the lower deck, the end parts of the arc tube plates 21 and the end parts of the inner tube 10 of the strut can be in contact with and connected with the upper deck and the lower deck, the arc tube plates 21 and the inner tube 10 of the strut can uniformly receive the stress transmitted by the decks, the direct stress of the single inner tube 10 or the direct stress of the outer tube 20 is avoided, and the structural strength of the strut is ensured.
Referring to fig. 1 to 9, a method for manufacturing a double-walled circular tube pillar is provided below, which is used to manufacture the pillar in any of the foregoing embodiments.
The manufacturing method of the double-wall round pipe support post comprises a preparation step, a cutting step and a welding step.
The preparation steps are as follows: two kinds of hollow round tubes of different diameters are prepared, the outer diameter of the small round tube 30 is d1, the inner diameter of the large round tube 40 is d2, d1=d2, or d1 is slightly smaller than d2. Wherein the small round tube 30 is used for the inner tube 10 as a double-walled round tube strut and the large round tube 40 is used for the outer tube 20 as a double-walled round tube strut.
Cutting: multiple cuts are made along the length of the large round tube 40 to form multiple arcuate tube sheets 21.
And (3) welding: when the plurality of arc tube plates 21 are surrounded on the outer wall of the small round tube 30, welding is carried out at the tube seams 41 between the adjacent arc tube plates 21 to form a double-wall round tube pillar; the small round tube 30 is an inner tube 10, and a plurality of arc tube plates 21 are welded to form an outer tube 20.
Wherein, the inner diameter of the large circular tube 40 is larger than the outer diameter of the small circular tube 30, d1=d2, or d1 is slightly smaller than d2, and the arc shape tube plate 21 formed by cutting the large circular tube 40 is adapted to the arc shape of the outer wall of the small circular tube 30, so that the arc shape tube plate 21 can be directly assembled outside the small circular tube 30. Therefore, the special purchasing of flat plates is not needed for bending and bending to be used as the arc tube plate 21 assembled outside the small round tube 30, and the purchasing of materials and the manufacturing are convenient.
In the welding step, when welding is performed at the pipe seam 41 of the arc tube plate 21, three sides of the solid welding body 22 formed by the welding material are respectively fixed with the side walls of the arc tube plates 21 on two sides and the outer wall of the inner tube 10, and the three components are fixed by one-time welding, so that the efficiency is high, the stability is good, and the integrity is good.
In one embodiment, the method of manufacturing further comprises an assembly step. The preparation step, the cutting step, the assembling step and the welding step are sequentially performed. It should be noted that, the steps are sequentially related to the relative order of the steps, and, for example, when other steps are included between the cutting step and the assembling step, the cutting step and the assembling step are also sequentially performed. Specific details of the assembly step, as well as the welding step, are described below.
Assembling: a plurality of arc tube plates 21 are installed at intervals along the circumferential direction of the inner tube 10, with tube slits 41 left between adjacent arc tube plates 21.
And (3) welding: at the position of the tube slit 41, welding is performed along the length direction of the inner tube 10 to form a welded body 22 at the tube slit 41 for fixing the adjacent arc tube plates 21 and for fixing the arc tube plates 21 and the inner tube 10. In other words, the first side of the welded body 22 is fixed to the side wall of the arc tube plate 21 on one side, the second side of the welded body 22 is fixed to the outer wall of the inner tube 10 (the small round tube 30), and the third side of the welded body 22 is fixed to the side wall of the arc tube plate 21 on the other side.
In other embodiments, the small round tube 30 may be directly inserted into the large round tube 40 before the large round tube 40 is cut, and then the large round tube 40 is cut, and after the large round tube 40 is cut, the welding is directly performed between the adjacent arc tube plates 21.
For convenience of description, the manufacturing method of inserting the small round tube 30 into the large round tube 40 and then performing the cutting step and the assembling step is referred to as a cut-before-assemble method, and the manufacturing method of sequentially performing the cutting step, the assembling step (mounting the plurality of arc tube plates 21 outside the small round tube 30) and the welding step is referred to as a cut-before-assemble method.
If the small round tube 30 is inserted into the large round tube 40 before cutting, the small round tube 30 can be manually aligned and inserted, but the alignment difficulty is high, the friction resistance in the insertion process is high, the pipe fitting is easy to damage, and the like, and the requirement on the size of the small round tube 30 of the large round tube 40 is high, and the tolerance ratio of the pipe fitting is low. Compared with the method of assembling before cutting after assembling, the method of assembling after cutting can directly cover the arc tube plate 21 outside the small round tube 30, has low assembling requirement, is easier to realize, is more suitable for assembling process through auxiliary equipment, and improves manufacturing efficiency.
In one embodiment, the method of manufacturing further comprises a tube moving step. The preparation step S100, the cutting step S200, the tube moving step S300, the assembling step S400, and the welding step S500 are sequentially performed. The cutting step, tube moving step, and assembling step are described in more detail below.
The cutting step comprises the following steps:
the large round tube 40 is placed in the arc-shaped groove 501 of the supporting frame 50, and the upper part of the large round tube 40 is exposed from the upper part of the supporting frame 50;
cutting one side of the large circular tube 40, and cutting a first tube slit 41 at one side of the large circular tube 40;
turning the large round tube 40 in the support frame 50 for 180 degrees, cutting the other side of the large round tube 40, cutting a second tube slit 41 on one side of the large round tube 40, and cutting the large round tube 40 into two arc tube plates 21;
the supporting frame 50 used in the cutting step comprises two detachable half frame bodies 51, each half frame body 51 comprises a groove portion 502, each groove portion 502 is half of an arc groove 501, when the two half frame bodies 51 are combined to form the whole supporting frame 50, the two groove portions 502 are communicated to form an arc groove 501 with an opening at the upper part, and the radian dimension of the groove wall of the arc groove 501 is matched with the outer wall of the large circular pipe 40.
The pipe moving step comprises the following steps:
after the large round tube 40 is cut into two arc tube plates 21, the half frame bodies 51 are moved to separate the two half frame bodies 51 so as to separate the two arc tube plates 21;
moving the small round tube 30 between the first jig frame and the second jig frame;
the half frame bodies 51 are moved to enable the two half frame bodies 51 to approach each other, and the two arc tube plates 21 are respectively sleeved on the left side and the right side of the small round tube 30.
According to the manufacturing method, the large round pipe 40 is supported by the supporting frame 50 which can be opened and combined in a movable mode, when the large round pipe 40 is cut, the two half frame bodies 51 of the supporting frame 50 are combined, and the two half frame bodies 51 of the supporting frame 50 are fixed in a mode of fastening, locking and the like, so that stable support is provided for the large round pipe 40 to be cut.
After the large round tube 40 is cut, the large round tube 40 is cut into two symmetrical arc tube plates 21, the connection between the two half frame bodies 51 is released, the two half frame bodies 51 are separated by driving of a driving device or manual pushing, and a blocking piece can be arranged on the inner side of the half frame bodies 51 or can be blocked from falling off from the inner side of the half frame bodies 51 by means of manual supporting and the like during separation. After the two half frame bodies 51 are separated, a tube placing gap is formed between the two arc tube plates 21 and the two half frame bodies 51, so that the small round tube 30 can be conveniently moved to the tube placing gap, and then the two half frame bodies 51 are combined.
Wherein, the blocking piece arranged at the inner side of the half frame body 51 can be configured as a blocking piece capable of controlling lifting, when the blocking piece touches the small round pipe 30 in the merging process of the two half frame bodies 51, the blocking piece automatically descends to avoid the position, so that the arc tube plate 21 is conveniently sleeved outside the small round pipe 30.
According to the manufacturing method, the two support frames 50 with the half frame bodies 51 capable of being separated and combined are adopted as the jig frame for supporting the large circular tube 40, so that the assembly of the arc-shaped tube plate 21 and the small circular tube 30 is conveniently realized, and compared with a method for manually moving the arc-shaped tube plate 21 to the outside of the small circular tube 30 for assembly after the large circular tube 40 is cut, the manufacturing method is more convenient and suitable for mechanical manufacturing. And after the two half frame bodies 51 are combined, the assembly of the small round tube 30 between the two arc tube plates 21 can be realized, the two half frame bodies 51 are fixed to form the support frame 50, and the support frame 50 can provide a welding support table immediately, so that the subsequent welding step is convenient.
The manufacturing method has reasonable flow and high manufacturing efficiency.
In one embodiment, in the tube moving step, as shown in FIG. 8, tube movement may be performed using a tube support 60. The pipe support piece 60 is of a bending shape, the pipe support piece 60 comprises a transverse frame and a vertical frame which are connected, one end of the transverse frame is suspended, a sliding block is arranged at the bottom of the vertical frame, and the sliding block is arranged on a top side guide rail or a bottom side guide rail. The pipe support 60 is provided at one side in the length direction of the support frame 50.
In the tube moving step, the small round tube 30 is sleeved on the transverse frame, then the tube supporting piece 60 is driven by the linear driving device to move along the guide rail, the small round tube 30 is moved between the two arc tube plates 21 and the two half frame bodies 51, and then the two half frame bodies 51 are combined, so that the two arc tube plates 21 are sleeved on the left side and the right side of the small round tube 30. Since the crossbrace is located inside the small round tube 30 and the crossbrace is parallel to the arc tube sheet 21, the crossbrace of the tube support 60 does not interfere with the assembly and/or welding between the arc tube sheet 21 and the small round tube 30.
In one embodiment, in the tube moving step, the linear driving device drives the one-side half frame 51 to move transversely along the top rail or the bottom rail, so as to combine or separate the two half frames 51. The pipe moving step is realized through mechanical equipment automation or semi-automation, and the manufacturing efficiency is higher.
In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. A double-walled circular tube strut, characterized by comprising an inner tube (10) and an outer tube (20);
the inner tube (10) is a hollow circular tube; the outer tube (20) comprises a plurality of arc tube plates (21), and the plurality of arc tube plates (21) are surrounded on the outer part of the inner tube (10); a pipe seam (41) is formed between the adjacent arc-shaped pipe plates (21), a welding body (22) is arranged in the pipe seam (41), and the arc-shaped pipe plates (21) and the inner pipe (10) are fixed through the welding body (22).
2. The double-walled circular tube strut according to claim 1, characterized in that the outer tube (20) comprises two of the arc tube sheets (21), the two arc tube sheets (21) comprising a first half tube and a second half tube; one side of the first half pipe and the second half pipe are fixed through a first welding body (22), and the other side of the first half pipe and the second half pipe are fixed through a second welding body (22).
3. The double-walled circular tube strut according to claim 1, characterized in that the number of arc tube plates (21) in the outer tube (20) is two or four.
4. The double-walled circular tube strut according to claim 2, characterized in that the first half tube and the second half tube are symmetrical about the central axis of the inner tube (10), the inner wall of the first half tube abutting the outer wall of the inner tube (10), the inner wall of the second half tube abutting the outer wall of the inner tube (10).
5. A double-walled circular tube strut according to claim 2, characterized in that the end surfaces in the length direction of the arc tube plates (21) are flush with the end surfaces in the length direction of the inner tube (10).
6. A method of manufacturing a double-walled tubular strut, for manufacturing a strut as claimed in any one of claims 1 to 5; the manufacturing method of the double-wall round pipe strut comprises the following steps:
cutting: cutting along the length direction of the large round tube (40) to form a plurality of arc tube plates (21);
and (3) welding: the arc tube plates (21) are circumferentially surrounded on the outer part of the small round tube (30) along the circumference of the small round tube (30), and welding is carried out at a tube seam (41) between the adjacent arc tube plates (21) to form the double-wall round tube pillar; the small round tube (30) is the inner tube (10), and the outer tube (20) is formed after a plurality of arc tube plates (21) are welded.
7. The method of manufacturing a double-walled tubular strut of claim 6, further comprising an assembly step performed between the cutting step and the welding step;
the assembling step comprises the following steps: -mounting a plurality of said arc tube plates (21) at intervals along the circumference of said inner tube (10), with a tube gap (41) remaining between adjacent ones of said arc tube plates (21);
the welding step comprises the following steps: and welding is performed along the length direction of the inner tube (10) at the position of the tube seam (41) so as to form a welding body (22) for fixing the adjacent arc-shaped tube plate (21) and fixing the arc-shaped tube plate (21) and the inner tube (10) at the tube seam (41).
8. The method of manufacturing a double-walled tubular strut of claim 7, wherein in the cutting step, the large tubular (40) is cut to form two symmetrical arcuate tube sheets (21).
9. The method of manufacturing a double-walled tubular strut of claim 8, wherein in the cutting step:
the large round tube (40) is placed in an arc-shaped groove (501) of the supporting frame (50), and the upper part of the large round tube (40) is exposed from the upper part of the supporting frame (50);
cutting one side of the large circular tube (40), and cutting a first tube seam (41) on one side of the large circular tube (40);
turning over the large round tube (40) in the supporting frame (50) for 180 degrees, cutting the other side of the large round tube (40), cutting a second tube slit (41) on one side of the large round tube (40), and cutting the large round tube (40) into two arc tube plates (21).
10. The method of manufacturing a double-walled tubular strut of claim 9, further comprising a tube moving step; the tube moving step is performed between the cutting step and the assembling step;
in the cutting step:
the used support frame (50) comprises two half frame bodies (51), the two half frame bodies (51) can move away from each other or approach each other, each half frame body (51) comprises a half groove, and the arc-shaped grooves (501) are formed when the two half frame bodies (51) are combined;
in the tube moving step:
after the large round tube (40) is cut into two arc tube plates (21), the half frame bodies (51) are moved so as to separate the two half frame bodies (51), and the two arc tube plates (21) are separated;
moving the small round tube (30) between the two half frame bodies (51);
and moving the half frame bodies (51) to enable the two half frame bodies (51) to approach each other, and enabling the two arc tube plates (21) to be respectively sleeved on the left side and the right side of the small round tube (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310499376.0A CN116654208A (en) | 2023-05-05 | 2023-05-05 | Double-wall round pipe pillar and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310499376.0A CN116654208A (en) | 2023-05-05 | 2023-05-05 | Double-wall round pipe pillar and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116654208A true CN116654208A (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310499376.0A Pending CN116654208A (en) | 2023-05-05 | 2023-05-05 | Double-wall round pipe pillar and manufacturing method thereof |
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| CN (1) | CN116654208A (en) |
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| SU648463A1 (en) * | 1977-09-06 | 1979-02-25 | Предприятие П/Я В-8662 | Ship pillar |
| CN201057316Y (en) * | 2007-06-20 | 2008-05-07 | 中国石油天然气集团公司 | Heavy caliber double-layer submerged arc welding pipe |
| KR20110061840A (en) * | 2009-12-02 | 2011-06-10 | 서울시립대학교 산학협력단 | Joint structure for hollow core concrete filled tube column and h shaped beam and construction method therefor |
| JP2013083071A (en) * | 2011-10-07 | 2013-05-09 | Nippon Steel & Sumitomo Metal | Double pipe structure using spiral pipe |
| CN208169975U (en) * | 2018-05-17 | 2018-11-30 | 江苏迪欧姆股份有限公司 | High-strength accurate welded still pipe |
| US20220097807A1 (en) * | 2020-09-28 | 2022-03-31 | Arcosa Marine Products, Inc. | Container hopper barge with pedestal support system |
| CN114688352A (en) * | 2022-04-22 | 2022-07-01 | 中国原子能科学研究院 | Pipeline for transporting liquid metal in reactor hall |
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2023
- 2023-05-05 CN CN202310499376.0A patent/CN116654208A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU648463A1 (en) * | 1977-09-06 | 1979-02-25 | Предприятие П/Я В-8662 | Ship pillar |
| CN201057316Y (en) * | 2007-06-20 | 2008-05-07 | 中国石油天然气集团公司 | Heavy caliber double-layer submerged arc welding pipe |
| KR20110061840A (en) * | 2009-12-02 | 2011-06-10 | 서울시립대학교 산학협력단 | Joint structure for hollow core concrete filled tube column and h shaped beam and construction method therefor |
| JP2013083071A (en) * | 2011-10-07 | 2013-05-09 | Nippon Steel & Sumitomo Metal | Double pipe structure using spiral pipe |
| CN208169975U (en) * | 2018-05-17 | 2018-11-30 | 江苏迪欧姆股份有限公司 | High-strength accurate welded still pipe |
| US20220097807A1 (en) * | 2020-09-28 | 2022-03-31 | Arcosa Marine Products, Inc. | Container hopper barge with pedestal support system |
| CN114688352A (en) * | 2022-04-22 | 2022-07-01 | 中国原子能科学研究院 | Pipeline for transporting liquid metal in reactor hall |
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