CN116254756B - Assembled steel structure bridge connecting device - Google Patents
Assembled steel structure bridge connecting device Download PDFInfo
- Publication number
- CN116254756B CN116254756B CN202310550068.6A CN202310550068A CN116254756B CN 116254756 B CN116254756 B CN 116254756B CN 202310550068 A CN202310550068 A CN 202310550068A CN 116254756 B CN116254756 B CN 116254756B
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- steel structure
- extension piece
- groove
- piece
- steel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge connection, and discloses an assembled steel structure bridge connection device, which comprises a first steel structure and a second steel structure, wherein the first steel structure and the second steel structure are mutually spliced and locked through a locking structure; the locking structure comprises an expansion piece which is arranged in the inserting position of the second steel structure; the expansion piece is driven by external force to extend towards the direction of the limiting groove and is inserted into the limiting groove to enable the first steel structure and the second steel structure to be relatively fixed; according to the invention, the expansion piece and the extension piece are arranged, when the first steel structure and the second steel structure are in butt joint, the expansion piece extends outwards, so that the purpose of pre-installation is achieved, at the moment, the second steel structure can be separated from the first steel structure, the installation angle can be conveniently adjusted, and after the installation angle is determined, the extension piece extends downwards, so that the extension piece is clamped with the limit groove, and the purpose of complete installation is achieved.
Description
Technical Field
The invention relates to the technical field of bridge connection, in particular to an assembled steel structure bridge connection device.
Background
In the bridge construction process, the bridge needs to bear heavy pressure, and meanwhile, when the connecting device is connected, the fixing device is required to be connected and fixed;
the existing bridge connection is generally to connect a plurality of steel structures together by using a sleeve, and then fix the steel structures by means of welding or bolting;
the existing mode has the following defects: although it is difficult to detach the steel structure after the welding due to the error in the mounting, the steel structure cannot be connected together and easily falls off only by fixing the sleeve without welding, and thus improvement is required.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an assembled steel structure bridge connecting device, which aims to solve the problems in the background art.
In order to achieve the above purpose, the invention provides an assembled steel structure bridge connecting device, which comprises a first steel structure and a second steel structure, wherein the first steel structure and the second steel structure are mutually spliced and locked through a locking structure;
wherein, the locking structure includes:
the expansion piece is arranged in the inserting position of the second steel structure;
the expansion piece is driven by external force to extend towards the direction of the limiting groove, and is inserted into the limiting groove to enable the first steel structure and the second steel structure to be relatively fixed;
the extension piece is arranged at one end, close to the first steel structure, of the extension piece, the extension piece is connected with the extension piece in a sliding mode, and after the protruding portion of the upper portion of the extension piece is matched with the limiting groove, the extension piece slides towards one side, close to the first steel structure, of the limiting groove, and the first steel structure and the second steel structure are locked with each other;
through setting up extension piece and extension piece, when first steel construction and second steel construction butt joint, extension piece outwards extend, reach the purpose of pre-installation, second steel construction can also separate with first steel construction this moment to conveniently adjust installation angle, after confirming installation angle, extend the piece downwardly extending, make extension piece and spacing groove joint, thereby reach the purpose of thoroughly installing.
Preferably, the extension piece is in sliding connection with the inside of the first steel structure, and the extension piece slides, so that the first steel structure and the second steel structure are pre-clamped, in this state, if the extension piece is in a mounting problem, the extension piece can be detached, after being outwards extended, the extension piece can be buckled with a limiting groove in the second steel structure, so that the second steel structure and the first steel structure are relatively fixed, and in the fixed state, after the extension piece moves back to leave the limiting groove, the second steel structure and the first steel structure can be detached, so that adjustment is facilitated.
Preferably, the base is installed to the one end of extension piece, base fixed connection is in the second steel construction, the sliding tray has been seted up at the both ends of base, the outer wall and the inner wall in sliding tray in close contact with of extension piece, under the effect of external force, the extension piece can slide in the inside of sliding tray.
Preferably, the outside of extension piece has seted up the cooperation groove, the one end of extension piece is connected with the cooperation piece, cooperation piece and cooperation groove sliding connection.
Preferably, the top of extension piece is connected with the stop collar, the inside slidable mounting of stop collar has the sliding plate, the top of sliding plate is provided with the kink, the top of kink is connected with the fixed pin, the fixed orifices has been seted up to the lateral wall of first steel construction and second steel construction, the fixed pin is pegged graft in the inside of fixed orifices, after the sliding plate outwards slides, fixed pin and fixed orifices grafting on the kink on the sliding plate to with first steel construction and second steel construction zonulae occludens, and continue to slide the sliding plate outwards, make the kink of sliding plate lead to the fact deformation, the kink can compress tightly with the inner wall of second steel construction this moment.
Preferably, a driving block is arranged at one end of the sliding groove, and drives the sliding plate to slide towards the side wall direction of the second steel structure, and the fixing pin is inserted into the fixing hole.
Preferably, the middle part of the extension piece is provided with an inclined groove, one end of the sliding plate is provided with an inclined surface, and when the inclined surface is propped against the inclined groove and the sliding plate continues to move towards the extension piece, the extension piece slides towards the first steel structure.
Preferably, the bottom of the driving block is connected with a driving rod, one end of the expansion piece, which is close to the inside of the sliding groove, is provided with a convex part, and when the driving rod abuts against the convex part, the expansion piece is expanded outwards.
Preferably, the outer end of the driving rod is connected with a fixed block, the side wall of the second steel structure is provided with a through groove, the driving rod is in sliding connection with the through groove, and the fixed block can be knocked towards the direction of the second steel structure through external force knocking.
Compared with the prior art, the invention provides an assembled steel structure bridge connecting device, which has the following beneficial effects:
1. according to the invention, the expansion piece and the extension piece are arranged, when the first steel structure and the second steel structure are in butt joint, the expansion piece extends outwards, so that the purpose of pre-installation is achieved, at the moment, the second steel structure can be separated from the first steel structure, the installation angle can be conveniently adjusted, and after the installation angle is determined, the extension piece extends downwards, so that the extension piece is clamped with the limit groove, and the purpose of complete installation is achieved.
2. According to the invention, after the sliding plate is outwards expanded, the bending part at the top of the sliding plate bends after being propped against the inner wall of the second steel structure, and the fixing pin at the top of the bending part is spliced with the fixing hole in the second steel structure, so that the first steel structure and the second steel structure are more tightly connected.
3. According to the invention, after the expansion piece is expanded outwards, the expansion piece can be buckled with the limiting groove in the second steel structure, so that the second steel structure and the first steel structure are relatively fixed, and in the fixed state, after the expansion piece is moved backwards to leave the limiting groove, the second steel structure and the first steel structure can be disassembled, so that the adjustment is facilitated.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a mounting block diagram of a first steel structure and a second steel structure of the present invention;
FIG. 3 is an enlarged schematic view of the invention at A in FIG. 1;
FIG. 4 is a contracted state diagram of the connecting device of the present invention;
FIG. 5 is an expanded view of the connecting device of the present invention;
FIG. 6 is an exploded view of the extender of the present invention;
fig. 7 is a partial cross-sectional view of an extender of the present invention.
In the figure: 100. a first steel structure; 200. a second steel structure; 210. a limit groove; 220. a fixing hole; 230. a through groove; 300. a base; 310. a sliding groove; 320. an expansion member; 330. an extension member; 340. a mating groove; 350. a mating block; 360. an inclined groove; 370. a convex portion; 380. a limit sleeve; 400. a sliding plate; 410. a bending part; 420. a fixing pin; 430. an inclined plane; 500. a driving block; 510. a driving rod; 520. and a fixed block.
Detailed Description
Referring to fig. 1-3, the embodiment discloses an assembled steel structure bridge connecting device, which comprises a first steel structure 100 and a second steel structure 200, wherein the first steel structure 100 and the second steel structure 200 are mutually spliced and locked through a locking structure;
wherein, the locking structure includes:
an extension 320 installed in the plugging position of the second steel structure 200;
the limiting groove 210 is formed in the second steel structure 200, and the extension piece 320 extends towards the direction of the limiting groove 210 under the drive of external force and is inserted into the limiting groove 210 to enable the first steel structure 100 and the second steel structure 200 to be relatively fixed;
through the above scheme, after the extension piece 320 is extended outwards, the extension piece can be buckled with the limiting groove 210 in the second steel structure 200, so that the second steel structure 200 and the first steel structure 100 are relatively fixed, and in the fixed state, after the extension piece 320 moves back to leave the limiting groove 210, the second steel structure 200 and the first steel structure 100 can be detached, so that adjustment is facilitated.
The extension piece 330 is installed at one end of the extension piece 320 close to the first steel structure 100, the extension piece 330 is in sliding connection with the extension piece 320, and after the upper protruding part of the extension piece 320 is matched with the limit groove 210, the extension piece 330 slides towards one side of the limit groove 210 close to the first steel structure 100, so that the first steel structure 100 and the second steel structure 200 are mutually locked;
through the above scheme, after the correct installation is determined, the extension piece 330 is moved downwards, so that the extension piece 330 is tightly clamped with the inside of the limit groove 210, and meanwhile, the second steel structure 200 can be driven to move for a small distance towards the direction of the first steel structure 100, so that the two are installed more tightly.
The extension 320 is slidably installed inside the first steel structure 100, the extension 320 is slidably connected with the inside of the first steel structure 100, and the first steel structure 100 and the second steel structure 200 are pre-clamped by sliding the extension 320, so that the first steel structure 100 and the second steel structure 200 can be disassembled if the first steel structure is installed in a problem.
With continued reference to fig. 4 to 5, a base 300 is installed at one end of the extension member 320, the base 300 is fixedly connected in the second steel structure 200, sliding grooves 310 are formed at both ends of the base 300, the outer wall of the extension member 320 is in close contact with the inner wall of the sliding grooves 310, and the extension member 320 can slide in the sliding grooves 310 under the action of external force;
it should be noted that the external force may be an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod.
With continued reference to fig. 6-7, the extension 320 has a mating slot 340 formed therein, and the extension 330 has a mating block 350 connected to one end thereof, the mating block 350 being slidably coupled to the mating slot 340.
The top of the expansion piece 320 is connected with a limit sleeve 380, a sliding plate 400 is slidably arranged in the limit sleeve 380, a bending part 410 is arranged at the top of the sliding plate 400, a fixing pin 420 is connected at the top of the bending part 410, fixing holes 220 are formed in the side walls of the first steel structure 100 and the second steel structure 200, and the fixing pin 420 is inserted into the fixing holes 220;
through the above scheme, after the sliding plate 400 slides outwards, the fixing pin 420 on the bending portion 410 on the sliding plate 400 is inserted into the fixing hole 220, so that the first steel structure 100 and the second steel structure 200 are tightly connected, and the sliding plate 400 continues to slide outwards, so that the bending portion 410 of the sliding plate 400 is deformed, and at this time, the bending portion 410 and the inner wall of the second steel structure 200 can be compressed.
One end of the sliding groove 310 is provided with a driving block 500, and the driving block 500 drives the sliding plate 400 to slide toward the sidewall of the second steel structure 200 and enables the fixing pin 420 to be inserted into the fixing hole 220.
The middle part of the extension piece 330 is provided with an inclined groove 360, one end of the sliding plate 400 is provided with an inclined surface 430, when the inclined surface 430 is propped against the inclined groove 360 and the sliding plate 400 continues to move towards the extension piece 330, the extension piece 330 slides towards the first steel structure 100, so that the extension piece 330 is clamped in the limit groove 210, and the first steel structure 100 and the second steel structure 200 are mutually locked.
The bottom of the driving block 500 is connected with a driving rod 510, and one end of the expansion piece 320 near the inside of the sliding groove 310 is provided with a convex part 370, so that the expansion piece 320 expands outwards after the driving rod 510 abuts against the convex part 370.
The outer end of the driving rod 510 is connected with a fixed block 520, the side wall of the second steel structure 200 is provided with a through groove 230, the driving rod 510 is in sliding connection with the through groove 230, and the fixed block 520 can be knocked towards the direction of the second steel structure 200 by external force knocking;
through the above scheme, when the second steel structure 200 is required to be connected with the first steel structure 100, the second steel structure 200 is spliced with the first steel structure 100, the state of the locking structure is shown in fig. 4, after the second steel structure 200 is spliced with the first steel structure 100, the fixed block 520 is knocked towards the direction of the second steel structure 200 through an external weight, the driving rod 510 is abutted against the convex part 370, the expansion piece 320 is expanded outwards, the expansion piece 320 is buckled with the limit groove 210, the fixed block 520 is not positioned at the innermost part at the moment, after the fixed block 520 is continuously knocked, the driving block 500 drives the sliding plate 400 to expand outwards, then the inclined surface 430 at the bottom of the sliding plate 400 is matched with the inclined groove 360 in the middle of the extending piece 330 to drive the extending piece 330 to move downwards, so that the extending piece 330 is clamped with the limit groove 210, and meanwhile, the second steel structure 200 can be extruded downwards for a certain distance, so that the connection with the first steel structure 100 is tighter;
meanwhile, after the sliding plate 400 expands outwards, the bending part 410 at the top of the sliding plate 400 bends after propping against the inner wall of the second steel structure 200, and the fixing pin 420 at the top of the bending part 410 is inserted into the fixing hole 220 inside the second steel structure 200, so that the connection between the first steel structure 100 and the second steel structure 200 is tighter.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. Assembled steel construction bridge connecting device, including first steel construction (100) and second steel construction (200), its characterized in that: the first steel structure (100) and the second steel structure (200) are mutually spliced and locked through a locking structure;
wherein, the locking structure includes:
an extension (320) mounted in the plugging position of the second steel structure (200);
the limiting groove (210) is formed in the second steel structure (200), and the extension piece (320) extends towards the direction of the limiting groove (210) under the drive of external force and is inserted into the limiting groove (210) to enable the first steel structure (100) and the second steel structure (200) to be relatively fixed;
an extension piece (330) mounted on one end of the extension piece (320) close to the first steel structure (100), wherein the extension piece (330) is slidably connected with the extension piece (320), and when the upper protruding part of the extension piece (320) is matched with the limit groove (210), the extension piece (330) slides towards one side of the limit groove (210) close to the first steel structure (100) to enable the first steel structure (100) and the second steel structure (200) to be mutually locked;
the expansion piece (320) is in sliding connection with the inside of the first steel structure (100);
a base (300) is arranged at one end of the expansion piece (320), the base (300) is fixedly connected in the second steel structure (200), sliding grooves (310) are formed in two ends of the base (300), and the outer wall of the expansion piece (320) is tightly contacted with the inner wall of the sliding grooves (310);
a matching groove (340) is formed in the outer side of the extension piece (320), one end of the extension piece (330) is connected with a matching block (350), and the matching block (350) is in sliding connection with the matching groove (340);
the top of the expansion piece (320) is connected with a limit sleeve (380), a sliding plate (400) is slidably arranged in the limit sleeve (380), a bending part (410) is arranged at the top of the sliding plate (400), a fixing pin (420) is connected to the top of the bending part (410), fixing holes (220) are formed in the side walls of the first steel structure (100) and the second steel structure (200), and the fixing pin (420) is inserted into the fixing holes (220);
one end of the sliding groove (310) is provided with a driving block (500), and the driving block (500) drives the sliding plate (400) to slide towards the side wall direction of the second steel structure (200) and enables the fixing pin (420) to be inserted into the fixing hole (220);
an inclined groove (360) is formed in the middle of the extension piece (330), an inclined surface (430) is arranged at one end of the sliding plate (400), and when the inclined surface (430) is propped against the inclined groove (360) and the sliding plate (400) continues to move towards the extension piece (330), the extension piece (330) slides towards the first steel structure (100);
the bottom of the driving block (500) is connected with a driving rod (510), one end of the expansion piece (320) close to the inside of the sliding groove (310) is provided with a convex part (370), and after the driving rod (510) is propped against the convex part (370), the expansion piece (320) is expanded outwards;
the outer end of the driving rod (510) is connected with a fixed block (520), a through groove (230) is formed in the side wall of the second steel structure (200), and the driving rod (510) is in sliding connection with the through groove (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310550068.6A CN116254756B (en) | 2023-05-16 | 2023-05-16 | Assembled steel structure bridge connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310550068.6A CN116254756B (en) | 2023-05-16 | 2023-05-16 | Assembled steel structure bridge connecting device |
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| Publication Number | Publication Date |
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| CN116254756A CN116254756A (en) | 2023-06-13 |
| CN116254756B true CN116254756B (en) | 2023-08-01 |
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| CN202310550068.6A Active CN116254756B (en) | 2023-05-16 | 2023-05-16 | Assembled steel structure bridge connecting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152259A (en) * | 2021-05-10 | 2021-07-23 | 王建林 | Steel bar connecting assembly for highway bridge construction |
| CN114411570A (en) * | 2022-03-11 | 2022-04-29 | 浙江嘉顺金属结构有限公司 | Modular steel structure for high-strength bridge and installation and construction method |
| CN114606866A (en) * | 2022-03-22 | 2022-06-10 | 陈宗元 | Bridge steel structure reinforcing device and reinforcing method |
| CN217651600U (en) * | 2022-03-30 | 2022-10-25 | 安徽定达建筑工程有限公司 | Assembled bridge steel structure coupling assembling |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004116201A (en) * | 2002-09-27 | 2004-04-15 | Asahi Steel Industry | Pipe connector |
| JP4207843B2 (en) * | 2004-05-18 | 2009-01-14 | 住友金属工業株式会社 | Method of using steel material for steel structure member and steel structure |
| JP4666687B2 (en) * | 2005-07-27 | 2011-04-06 | カイエー共和コンクリート株式会社 | Concrete structure and coupler for construction of concrete structure |
| TW200809161A (en) * | 2006-07-27 | 2008-02-16 | Yazaki Ind Chem Co Ltd | Joint for tube bodies |
| GB2521837A (en) * | 2014-01-02 | 2015-07-08 | Saint Gobain Placo Sas | Connector |
| US20190186130A1 (en) * | 2017-12-18 | 2019-06-20 | ZomeTek, LLC | Plank connectors |
| CN110952685B (en) * | 2019-12-06 | 2021-05-18 | 华北理工大学 | Assembled buffering antidetonation light steel frame composite wall |
| CN213087044U (en) * | 2020-07-31 | 2021-04-30 | 浙江浩腾钢结构有限公司 | Connecting structure of steel structure beam and steel structure column |
| CN111778874B (en) * | 2020-08-11 | 2021-08-17 | 河北宝力工程装备股份有限公司 | Manufacturing and processing technology of steel structure bridge supporting embedded part |
| CN214461135U (en) * | 2021-01-29 | 2021-10-22 | 中核西北建设集团(西藏)有限公司 | A connection structure for steel construction engineering |
| CN113006276A (en) * | 2021-03-09 | 2021-06-22 | 商丘工学院 | Steel structure beam column |
| CN214531117U (en) * | 2021-04-27 | 2021-10-29 | 福建省天柱建设工程有限公司 | Assembled steel construction house module connection structure |
| CN215106580U (en) * | 2021-06-04 | 2021-12-10 | 浙江展诚建设集团股份有限公司 | Steel beam with steel concrete combined structure |
| CN214994732U (en) * | 2021-06-04 | 2021-12-03 | 山西一建集团有限公司 | Connection structure of wood structure vertical member root and concrete and steel structure |
| CN217652016U (en) * | 2022-05-24 | 2022-10-25 | 安徽徽地钢结构工程有限公司 | Steel structure connecting device |
| CN115262761B (en) * | 2022-08-22 | 2024-05-14 | 张彤昌 | Steel construction assembled house connection structure convenient to installation |
-
2023
- 2023-05-16 CN CN202310550068.6A patent/CN116254756B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152259A (en) * | 2021-05-10 | 2021-07-23 | 王建林 | Steel bar connecting assembly for highway bridge construction |
| CN114411570A (en) * | 2022-03-11 | 2022-04-29 | 浙江嘉顺金属结构有限公司 | Modular steel structure for high-strength bridge and installation and construction method |
| CN114606866A (en) * | 2022-03-22 | 2022-06-10 | 陈宗元 | Bridge steel structure reinforcing device and reinforcing method |
| CN217651600U (en) * | 2022-03-30 | 2022-10-25 | 安徽定达建筑工程有限公司 | Assembled bridge steel structure coupling assembling |
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| CN116254756A (en) | 2023-06-13 |
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