CN107081535B - A kind of steel pipe plug joint with improved structural strength - Google Patents
A kind of steel pipe plug joint with improved structural strength Download PDFInfo
- Publication number
- CN107081535B CN107081535B CN201710530672.7A CN201710530672A CN107081535B CN 107081535 B CN107081535 B CN 107081535B CN 201710530672 A CN201710530672 A CN 201710530672A CN 107081535 B CN107081535 B CN 107081535B
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- China
- Prior art keywords
- steel pipe
- shaped groove
- wall
- plate
- structural strength
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 137
- 239000010959 steel Substances 0.000 title claims abstract description 137
- 238000003466 welding Methods 0.000 claims abstract description 17
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims 4
- 238000010276 construction Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/002—Crimping or bending the workpieces at the joining area
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
A kind of steel pipe grafting connector improving structural strength, the top steel pipe are frustum shape, are welded to connect by two pieces of upper bodies, and the inner wall of every top weld seam of top steel pipe is equipped with support bar；Lower part steel pipe is frustum shape, is welded to connect by two pieces of lower cases, and the upper end of every lower part weld seam of lower part steel pipe is equipped with U-shaped groove；The lower part steel pipe inner wall of U-shaped groove is equipped with stiffening plate, which is enough that U-shaped groove is completely covered；Stiffening plate outer edge is fixedly connected with lower part steel pipe inner wall, stiffening plate outer wall with U-shaped groove inward flange by fillet welding；The top of lower part steel pipe is equipped with baffle, and baffle completely encloses the top of lower part steel pipe；Top steel pipe is plugged with lower steel plate, is fitted closely.The present invention reduces the difficulty of construction work to facilitate operation with the risk of work progress.The present invention is other than it can be improved node strength, it can also be ensured that its slide displacement does not exceed design value.
Description
Technical field
The invention belongs to a kind of couplings, and in particular to a kind of steel pipe grafting connector for improving structural strength.
Background technique
In the public works such as electrical communications and lighting apparatus, the steel pipe of industry manufacture is usually more than single section.This
Depending on maximum transportation lengths or due to zinc-plated limitation or other demand of specialty.Coupling uses grafting connector, grafting connector
It is top steel pipe socket on the steel pipe of lower part, is linked together using two direct frictional force of contact surface.The cone of two steel pipes
It spends equal, so that they opposite will slide a distance, then stops sliding, it theoretically will be along the whole length of connector
Closely link together.Inserting depth is usually 1.5 times of diameter of section at grafting support.
Steel pipe is welded there are two shell along longitudinal seam.Two weld seams being welded to connect must reach full weldering and
It is examined in strict accordance with regulation, this is very important.Exactly because when steel pipe by it is curved when, on the section of steel pipe above will produce
Raw circumference stress, causes steel pipe seam to crack.It crack will be along steel pipe Longitudinal Extension, so that the destruction of grafting connector, structure
It collapses.
It is using backing plate guaranteeing that two weld seams reach a kind of method welded entirely.Welding metal can be made to weld in this way
When weld seam bottom can also merge completely.However, this method is unpractical, therefore backing plate meeting when being used for grafting connector
Prevent the sliding contact between steel pipe up and down.Therefore it is necessary to be welded in the case where not using backing plate, or using pad
Backing plate can be removed after plate welding, however the two methods are all unsatisfactory.In the case of the first, backing plate is not being used
In the case where be difficult to obtain good weld seam, need to carry out a large amount of post-processings.Under second situation, removing backing plate is a Xiang Fan
The task of weight, it is necessary to it is carried out in closed area, it is unfavorable to the health and safety of worker, and also not damage original weld seam
In the case where carry out dismounting backing plate, this is extremely difficult.
Summary of the invention
In order to overcome the above problem of the prior art, the object of the present invention is to provide a kind of steel pipes for improving structural strength to insert
Connector.The present invention is nested together by the taper of steel pipe, and the safety of incrementss device facilitates operation, reduces construction work
The difficulty of journey, and the harmfulness to worker.
To achieve the goals above, the technical scheme adopted by the invention is that: it is a kind of improve structural strength steel pipe grafting
Connector, the top steel pipe are frustum shape, are welded to connect by two pieces of upper bodies, every top weld seam of top steel pipe it is interior
Wall is equipped with support bar；Lower part steel pipe is frustum shape, is welded to connect by two pieces of lower cases, every lower part weld seam of lower part steel pipe
Upper end be equipped with U-shaped groove；The lower part steel pipe inner wall of U-shaped groove is equipped with stiffening plate, which has been enough
The U-shaped groove of all standing；Stiffening plate outer edge and lower part steel pipe inner wall, stiffening plate outer wall and U-shaped groove inward flange are solid by fillet welding
Fixed connection；The top of lower part steel pipe is equipped with baffle, and baffle completely encloses the top of lower part steel pipe；Assembled state, top steel pipe
Support bar plugs after being aligned with the U-shaped groove of lower steel plate, and top steel pipe is identical as the taper of lower steel plate, makes top steel pipe
Inner wall and the outer wall of lower steel plate fit closely.
The longitudinal length of the U-shaped groove is 1.1 times of top steel pipe and lower steel plate junction length.
The length of the stiffening plate is 1.3 times of the longitudinal length of U-shaped groove.
The support bar is mutually welded with top steel plate.
Compared with prior art, advantage of the invention is embodied in:
1) present invention is nested together by the taper of steel pipe, the safety of incrementss device；
2) present invention is connected by the grafting connector of steel pipe, facilitates operation；
3) compared with previous work progress, reduce the difficulty of construction work, and the harmfulness to worker.
Detailed description of the invention
Fig. 1 is the schematic elevation view of grafting connector of the invention；
Fig. 2 is the schematic cross-section that Fig. 1 is intercepted along line A-A；
Fig. 3 is the stereoscopic schematic diagram of the lower part steel splitting pipe of Fig. 1；
Fig. 4 is the schematic top plan view of Fig. 3；
Fig. 5 is the stereoscopic schematic diagram of the top steel splitting pipe of Fig. 1；
Fig. 6 is the schematic top plan view of Fig. 5.
Fig. 7 is the schematic cross-section that Fig. 1 is intercepted along line B-B；
In figure, 1 is baffle；2 be top steel pipe；3 be backing plate；4 be upper body；5 be stiffening plate；6 be butt weld；7
For lower case；8 be lower part seam weld；9 be lower part steel pipe；10 be top seam weld；11 be U-shaped groove；12 be fillet weld.
Specific embodiment
Narration in detail is made to the present invention with reference to the accompanying drawing, but the present invention is not limited to following embodiment.
The present invention allows backing plate to stay in the subsequent continuation of insurance of grafting weld.Lower part steel pipe is on its section along former longitudinal weldering
Reserved two grooves are connect, in its cross-sectional internal, weld the steel plate for being approximately equal to twice of groove width along groove.
A kind of grafting joint structure for steel pipe, the first tapered steel being made of the two pairs of shells engaged in longitudinal seam welding
Pipe and the second conical steel pipe.First conical pipe is in upper part, and the second conical pipe is in low portion.The upper part be suitable for
Close mode is assembled, and the low portion is connected suitable for interior grafting connector, improves the pad of part longitudinal seam welding under steel pipe
Plate is welded on the inside of steel pipe, is aligned with longitudinal seam welding and lower part steel pipe in the longitudinal slit that the end on steel pipe top is formed
Welding extends in steel pipe top across and along the longitudinal direction of slit, and grafting is collectively formed with the steel pipe lower part mutually to cooperate therewith and connects
Head.
A support bar is arranged to be welded on the inside of steel pipe, makes longitudinal seam welding to extend to steel pipe lower part, longitudinal slot and longitudinal direction
Seam is mutually connected in the end of upper steel pipe, weld seam top steel pipe inside and longitudinally extend across entire steel pipe along groove
Until backing plate.
Wherein backing plate extends beyond the fore-and-aft distance of the inner end of longitudinal slot, and the longitudinal seam on steel pipe top is welded to lower part steel
Tube section ends extend beyond groove.
Wherein backing plate is fixed to top steel pipe, the welding angle and steel by the fillet welding of the edge extension along each groove
The longitudinal seam on pipe top engages.
Wherein each backing plate is fixed to steel pipe top by connecting the second fillet welding that each backing plate periphery extends.
Wherein the thickness of the backing plate of top steel pipe is not less than 1.3 times of top thickness of steel pipe.
The longitudinal length of its further groove is equal to 1.1 times of top steel pipe 2 and 9 junction length of lower part steel pipe.
Present invention construction includes grafting joint structure part, as shown in Figure 1, top steel pipe 2 and lower part steel pipe 9 are by two
Steel pipe is plugged in together.Since top steel pipe 2 and lower part steel pipe 9 all have identical taper, so they are slided together
Certain distance, the whole length close contact then along connector are frictionally engaged.After grafting as shown in Figure 1.And grafting
Length be usually insert junction diameter of steel tube 1%.It can be seen that from Fig. 1 and Fig. 2 when assembling upper and lower side steel pipe, support
Item 3 extends in the U-shaped groove 11 for receiving support bar.Therefore, the pad in connected structure according to the present invention, in top steel pipe 2
Plate 3 need not remove to receive lower part steel pipe 9.On the contrary, backing plate 3 is kept completely, so as to the intensity for keeping lower part to construct.
Shown in attached drawing according to the present invention, the top steel pipe 2 and lower part steel of a 12 common face steel-tube constructions are provided
Pipe 9.Top steel pipe 2 be weld a pair of of upper body 4 at top seam weld 10 and made of.Lower part steel pipe 9 in lower part by stitching
It welds a pair of of the lower case 7 welded at 8 and is made.6 connection reinforcement plate 5 of butt weld increases rigidity.
The operation principle of the present invention is that:
The present invention is other than it can be improved node strength, it can also be ensured that grafting displacement does not exceed design value.It is this
The grafting displacement of the grafting node of type is usually the 10% of maximum grafting amount.Because needing to place auxiliary device on steel pipe, to prevent
It influences each other between steel pipe, so grafting displacement is no more than design standard.The present invention is limited by the groove bottom end of lower part steel pipe
Slide downward after the composition backing of top steel pipe is made, so that the grafting amount between limiting steel pipe is more than maximum grafting amount.Moreover,
Since grafting connector is in pressured state, lower part steel tube section upper stress is little, therefore this design is so that component strength loses
Will not even seldom lose component strength, stress very little at steel tube section.In addition, lower part steel tube end part on its top by inserting
Enter partition to prevent section from corroding, while the section rigidity of lower part steel pipe also can be improved.
In fig. 1 and 2, it is provided with a pair of backing plate 3 for extending its whole length.Each backing plate 3 is by longitudinal seam welding
The inside for being fixed on top steel pipe 2 is welded together at 10.Which ensure that complete welding penetrates, as shown in Fig. 2, and high
The glaze of heat input welds, and with the base portion that ensures in weld seam, there are good fusions.
The upper end of lower part steel pipe 9 as depicted in figs. 1 and 2 forms the main part of grafting connector.U-shaped groove 11 is under
The upper end of portion's steel pipe 9 longitudinally extends at lower end, and the distance of D is bigger by 10% than the design lap of grafting connector, therefore, Fig. 5
Shown in distance D be to design 1.1 times of grafting joint length.
As shown in Fig. 1, Fig. 2 and Fig. 5, in order to make top steel pipe 2 and U-shaped groove 11 overlap, and shape is made into groove 11
To receive backing plate 3, therefore stiffening plate 5 is fixed on the inside of lower part steel pipe 9.As shown in figure 5, each stiffening plate 5 is from lower part steel pipe 9
Upper end edge length of steel pipe extend to the lower section of U-shaped groove 11.Stiffening plate 5 is fixed to lower part steel pipe 9 by multiple weldments, makes
It obtains stiffening plate 5 and blocks U-shaped groove 11 and its edge completely, and extend to fillet weld 12 together.Each fillet weld 12 with dock
Weld seam 6 connects, which extends downwardly from the top of U-shaped groove 11 and connect with lower part weld seam 8.
In addition, each stiffening plate 5 extends to fillet weld 13 by the both sides of connecting plate and is fixed on the interior of lower part steel pipe 9
Portion.By this connection type, the length that each stiffening plate 5 extends is than top steel pipe 2 and 9 junction length of lower part steel pipe
Greatly, and become longitudinally lower seam weld 8 a part, so that stress is passed down to lower part steel pipe 9.Therefore, if will insert
Connector links together, it is possible to the following this way of contact can occur, each fillet weld 12 of the bottom end of groove 14 mentions
For natural inclined plane to engage upper body 4；For strengthening version 5, it is ensured that extended outwardly by backing plate 3, obtain the wall thickness of top steel pipe 2
To extend.So the lower end of backing plate 3 can be it is inclined.It is longitudinal long that the length of each stiffening plate 5 is approximately equal to U-shaped groove 11
1.3 times of degree.
Baffle 1 closes the end of lower part steel pipe 9, and is shown in FIG. 5.For the sake of clarity, it is saved from other Tu Zhong
Baffle 1 is omited.Baffle 1 closes 9 upper end of lower part steel pipe, to increase rigidity.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530672.7A CN107081535B (en) | 2017-07-03 | 2017-07-03 | A kind of steel pipe plug joint with improved structural strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530672.7A CN107081535B (en) | 2017-07-03 | 2017-07-03 | A kind of steel pipe plug joint with improved structural strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107081535A CN107081535A (en) | 2017-08-22 |
| CN107081535B true CN107081535B (en) | 2019-05-03 |
Family
ID=59606015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710530672.7A Active CN107081535B (en) | 2017-07-03 | 2017-07-03 | A kind of steel pipe plug joint with improved structural strength |
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| Country | Link |
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| CN (1) | CN107081535B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883407A (en) * | 2019-10-24 | 2020-03-17 | 上海江南长兴造船有限责任公司 | A method for solving welding joint defects in production |
| CN113458692B (en) * | 2021-07-19 | 2023-05-23 | 四川华体照明科技股份有限公司 | Multi-edge rod welding method |
| CN116006217B (en) * | 2022-12-27 | 2024-01-23 | 中铁十四局集团隧道工程有限公司 | Pipe curtain structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152930A (en) * | 1984-08-21 | 1986-03-15 | Nippon Kokan Kk <Nkk> | Method for manufacturing a metal tube with a polygonal cross section having a stepped large diameter tube section |
| JP5457211B2 (en) * | 2010-01-27 | 2014-04-02 | バブコック日立株式会社 | Welding method of butt welded groove joint of piping using back shield material |
| CN204299262U (en) * | 2014-12-17 | 2015-04-29 | 江西长林鑫源通信科技有限公司 | Communication view tower tower body syndeton |
| CN204437524U (en) * | 2014-12-24 | 2015-07-01 | 重庆百齐居建材有限公司 | Be convenient to the fire protection pipeline welded |
| CN106825874A (en) * | 2017-03-10 | 2017-06-13 | 广州增立钢管结构股份有限公司 | A kind of submerged-arc welding single face welding and double face shaping technique |
-
2017
- 2017-07-03 CN CN201710530672.7A patent/CN107081535B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152930A (en) * | 1984-08-21 | 1986-03-15 | Nippon Kokan Kk <Nkk> | Method for manufacturing a metal tube with a polygonal cross section having a stepped large diameter tube section |
| JP5457211B2 (en) * | 2010-01-27 | 2014-04-02 | バブコック日立株式会社 | Welding method of butt welded groove joint of piping using back shield material |
| CN204299262U (en) * | 2014-12-17 | 2015-04-29 | 江西长林鑫源通信科技有限公司 | Communication view tower tower body syndeton |
| CN204437524U (en) * | 2014-12-24 | 2015-07-01 | 重庆百齐居建材有限公司 | Be convenient to the fire protection pipeline welded |
| CN106825874A (en) * | 2017-03-10 | 2017-06-13 | 广州增立钢管结构股份有限公司 | A kind of submerged-arc welding single face welding and double face shaping technique |
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| Publication number | Publication date |
|---|---|
| CN107081535A (en) | 2017-08-22 |
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Effective date of registration: 20240110 Address after: 710000 150m south of metallurgical Avenue, high tech Industrial Development Zone, Sanyuan County, Xianyang City, Shaanxi Province Patentee after: Shaanxi qinximeng Industrial Co.,Ltd. Address before: 710199 Xijing college, No.1 Xijing Road, Chang'an District, Xi'an City, Shaanxi Province Patentee before: XIJING University |