A method for installing a steel box girder corridor as a whole at high altitude

Abstract

This invention discloses a method for high-altitude integral back-plug installation of steel box girder corridors, relating to the field of steel structure technology. The method includes the following steps: Lifting lug connection: Connecting the four lifting lugs on the steel box girder corridor to the four lifting ropes on a crane; Crane lifting: Using a crane, lifting the steel box girder corridor to the designated position via the lifting ropes on the crane; Bottom surface adjustment: Adjusting the connection points between the lifting ropes on the crane and the steel box girder corridor according to the four lifting lugs on the steel box girder corridor, i.e., adjusting the horizontal position of the four corners of the bottom surface of the steel box girder corridor according to the installation surface of the steel box girder corridor; Back-plug docking: Docking the adjusted steel box girder corridor to the installation surface of the steel box girder corridor, completing the back-plug docking of the steel box girder corridor to the installation surface of the steel box girder corridor. This method avoids the separate welding and lifting of steel components, improving the installation efficiency of the steel box girder corridor and reducing the installation difficulty, thus reducing the installation cost of the steel box girder corridor.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, specifically to a method for installing a steel box girder corridor with an integral rear plug at high altitude. Background Technology

[0002] The industrial construction industry is developing rapidly, especially with the increasing use of steel structures. Steel structure installation usually requires working at heights, and extra attention must be paid to safety during construction. Working at heights is often affected by external weather conditions such as rain, strong winds, and snow, which can seriously affect the construction speed and quality, and affect the progress of the project and its later use.

[0003] The safety of operators must be ensured during high-altitude hoisting and welding operations of steel structures. Traditional steel structure construction involves hoisting and welding individual steel components. Due to the limited space at heights, construction workers usually need to use special tools and have high operating skills to complete the work. In some steel structure parts, the positioning of steel components and the quality of welding are sometimes difficult to guarantee due to space constraints. Therefore, ensuring the smooth installation of steel box girder corridors at high altitudes is a technical challenge, requiring the design of a high-altitude overall back-plug installation method for steel box girder corridors. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a method for installing a steel box girder at high altitude as a whole, so as to solve the problem that in the prior art, due to the limited space size for high-altitude operations, construction workers usually need to use special tools and have high operating skills to complete the work. In some steel structure parts, the welding is often difficult to guarantee the positioning of steel components and the quality of welding due to space constraints.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A method for installing a steel box girder corridor with an integral rear plug at high altitude includes the following steps:

[0007] Lifting lug connection: Connect the four lifting lugs on the steel box corridor to the four lifting ropes on the crane;

[0008] Crane lifting: Use a crane to lift the steel box corridor to the designated location using the crane's lifting ropes;

[0009] Bottom surface adjustment: Adjust the connection points between the hoisting rope on the crane and the steel box corridor according to the four hoisting lugs on the steel box corridor. That is, adjust the horizontal position of the four corners of the bottom surface of the steel box corridor according to the installation surface of the steel box corridor so that the four corners of the bottom surface of the steel box corridor fit the installation surface of the steel box corridor.

[0010] Rear-plug docking: Connect the adjusted steel box girder to the installation surface of the steel box girder to complete the rear-plug docking of the steel box girder to the installation surface of the steel box girder.

[0011] As a further aspect of the present invention: steel column bracing is provided on both sides of the steel box corridor, and the ends of the steel column bracing are fully welded to the surface of the steel box corridor using a full penetration welding method, and the tilt angle of the steel column bracing during welding is forty-five degrees.

[0012] Since the steel column bracing is welded to both sides of the steel box girder, it can improve the overall strength of the steel box girder, making it more stable during hoisting and also improving its safety during hoisting.

[0013] Furthermore, the steel column bracing is welded at a 45-degree angle, which allows the steel box girder to generate horizontal and vertical forces. The steel column bracing and the steel box girder will form a stable triangular structure, further improving the overall stability of the steel box girder.

[0014] As a further aspect of the present invention: the four lifting lugs are located at one-quarter of the horizontal position in the middle of the steel box corridor, and the lifting lugs are made of Q345B with a thickness of 10mm.

[0015] As a further aspect of the present invention: the lifting lug includes a lifting lug body, an adjustment seat is provided on the outer side of the lifting lug body, the bottom surface of the adjustment seat is fully welded to the surface of the steel box corridor by a full penetration welding method, and a first track rod and a second track rod are installed on the inner side of the adjustment seat, the first track rod penetrating the lifting lug body.

[0016] As a further aspect of the present invention: a limiting sleeve is fixedly connected to the bottom of the lifting lug body, and the limiting sleeve is nested on the outside of the second track rod.

[0017] As a further aspect of the present invention: an electromagnet is provided inside the lug body near the top of the first track rod, the bottom surface of the electromagnet is provided with a limiting lock tongue, and the top surface of the first track rod is provided with a lock tongue groove that matches the limiting lock tongue.

[0018] As a further aspect of the present invention: a driving hydraulic cylinder is fixedly connected to one side of the adjusting seat, and the output end of the driving hydraulic cylinder passes through the adjusting seat and is fixedly connected to one side of the lifting lug body. The electromagnet and the driving hydraulic cylinder use the same starting circuit.

[0019] As a further aspect of the present invention: the bottom four corners of the steel box corridor are provided with fixed lifting lugs, the fixed lifting lugs are made of Q345B and have a thickness of 10mm.

[0020] The beneficial effects of this invention are:

[0021] The steel box girder is hoisted as a whole by a crane, and the adjusted steel box girder is connected to the installation surface of the steel box girder. That is, the installation surface of the steel box girder is moved horizontally by the crane to complete the back-plug connection between the steel box girder and the installation surface. Then the steel box girder is fixed by welding. The installation of the steel box girder by this method can avoid the individual welding and hoisting of steel components, which greatly improves the installation efficiency of the steel box girder and reduces the installation difficulty, that is, reduces the installation cost of the steel box girder.

[0022] By using the lifting lugs, the hydraulic cylinder drives the lifting lug body, which releases the lateral force between the limit lock tongue and the first track rod. The electromagnet then uses magnetic force to attract the limit lock tongue, causing it to overcome its own weight and disengage from the lock tongue groove on the first track rod. This releases the lock between the lifting lug body and the first track rod. At this point, the hydraulic cylinder drives the lifting lug body, causing it to slide along the side of the first track rod. As the lifting lug body slides along the side of the first track rod, the vertical distance between the top of the lifting rope corresponding to the lifting lug body and the top surface of the steel box corridor is also adjusted, thus achieving the adjustment of the horizontal position of the steel box corridor. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is the front view of the steel box corridor in this invention;

[0025] Figure 2 This is a front view of the lifting lugs in this invention;

[0026] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0027] In the diagram: 1. Steel box corridor; 2. Steel column diagonal brace; 3. Lifting lug; 31. Lifting lug body; 311. Limiting sleeve; 312. Electromagnet; 313. Limiting lock tongue; 32. Adjusting seat; 33. Drive hydraulic cylinder; 34. First track rod; 341. Lock tongue groove; 35. Second track rod; 4. Fixed lifting lug. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-3As shown, this invention discloses a method for installing a steel box girder corridor as a whole at high altitude, including the following steps:

[0030] Lifting lug connection: Connect the four lifting lugs 3 on the steel box corridor 1 to the four lifting ropes on the crane. This means using locking hooks to fix the four lifting ropes on the crane to the four lifting lugs 3 on the steel box corridor 1 respectively, ensuring that the four lifting ropes and the four lifting lugs 3 will not slip off.

[0031] Crane lifting: Using a crane, the steel box corridor 1 is lifted to the designated position by the lifting ropes on the crane. That is, the lifting ropes are transported by the crane. Since the four lifting ropes are fixedly connected to the four lifting lugs 3 on the steel box corridor 1, the steel box corridor 1 is also transported during the process of the crane transporting the lifting ropes, thus realizing the lifting of the steel box corridor 1 and simultaneously lifting the steel box corridor 1 to the set position.

[0032] Bottom surface adjustment: During the process of hoisting the steel box corridor 1 using four hoisting ropes, the different extension and contraction of the four hoisting ropes, as well as the effect of wind force during the hoisting process, will cause errors in the spatial position of the hoisted steel box corridor 1. At this time, the connection points between the hoisting ropes on the crane and the steel box corridor 1 are adjusted according to the four hoisting lugs 3 on the steel box corridor 1. That is, the horizontal position of the four corners of the bottom surface of the steel box corridor 1 is adjusted according to the installation surface of the steel box corridor 1 so that the four corners of the bottom surface of the steel box corridor 1 fit the installation surface of the steel box corridor 1.

[0033] Rear plug docking: The adjusted steel box corridor 1 is docked with the installation surface of the steel box corridor 1. That is, the installation surface of the steel box corridor 1 is moved horizontally by a crane to complete the rear plug docking of the steel box corridor 1 with the installation surface of the steel box corridor 1. Then the steel box corridor 1 is fixed by welding.

[0034] By using this method to install the steel box corridor 1, the individual welding and hoisting of steel components can be avoided, which greatly improves the installation efficiency of the steel box corridor 1 and reduces the installation difficulty of the steel box corridor 1, thus reducing the installation cost of the steel box corridor 1.

[0035] Steel column bracing 2 is provided on both sides of the steel box corridor 1. The ends of the steel column bracing 2 are fully welded to the surface of the steel box corridor 1 using a full penetration welding method. The tilt angle of the steel column bracing 2 during welding is forty-five degrees.

[0036] Since the steel column diagonal bracing 2 is welded to both sides of the steel box corridor 1, the steel column diagonal bracing 2 can improve the overall strength of the steel box corridor 1, making the steel box corridor 1 more stable during the hoisting process, and also improving the safety of the steel box corridor 1 during the hoisting process.

[0037] Furthermore, the steel column brace 2 is welded at an inclination angle of 45 degrees, which allows the steel box corridor 1 to generate horizontal and vertical forces. A stable triangular structure is formed between the steel column brace 2 and the steel box corridor 1, further improving the overall stability of the steel box corridor 1.

[0038] Four lifting lugs 3 are set at the one-quarter position of the horizontal position in the middle of the steel box corridor 1. The lifting lugs 3 are made of Q345B and have a thickness of 10mm.

[0039] The lifting lug 3 includes a lifting lug body 31. An adjusting seat 32 is provided on the outer side of the lifting lug body 31. The bottom surface of the adjusting seat 32 is fully welded to the surface of the steel box corridor 1 using a full penetration welding method. A first track rod 34 and a second track rod 35 are installed on the inner side of the adjusting seat 32. The first track rod 34 passes through the lifting lug body 31. A limit sleeve 311 is fixedly connected to the bottom of the lifting lug body 31. The limit sleeve 311 is nested on the outer side of the second track rod 35. An electromagnet 312 is provided inside the lifting lug body 31 near the top of the first track rod 34. A limit locking tongue 313 is provided on the bottom surface of the electromagnet 312. A locking tongue groove 341 that matches the limit locking tongue 313 is opened on the top surface of the first track rod 34. A driving hydraulic cylinder 33 is fixedly connected to one side of the adjusting seat 32. The output end of the driving hydraulic cylinder 33 passes through the adjusting seat 32 and is fixedly connected to one side of the lifting lug body 31. The electromagnet 312 and the driving hydraulic cylinder 33 use the same starting circuit.

[0040] Specifically, when adjusting the position of the connection points between the hoisting ropes on the crane and the steel box corridor 1 using the four hoisting lugs 3, firstly, the starting circuit of the electromagnet 312 and the driving hydraulic cylinder 33 is turned on. Once the starting circuit is connected, the driving hydraulic cylinder 33 will drive the hoisting lug body 31. The hoisting lug body 31 will release the lateral force between the limiting lock tongue 313 and the first track rod 34. At this time, the electromagnet 312 also generates magnetic force, which will attract the limiting lock tongue 313. After the hoisting lug body 31 releases the lateral force between the limiting lock tongue 313 and the first track rod 34, the electromagnet 312 can... The limiting locking tongue 313 is attracted and overcomes its own weight to disengage from the locking tongue groove 341 on the first track rod 34. When the limiting locking tongue 313 disengages from the locking tongue groove 341, the lock between the lifting lug body 31 and the first track rod 34 is released. At this time, the driving hydraulic cylinder 33 drives the lifting lug body 31 to slide along the side of the first track rod 34. During the sliding process of the lifting lug body 31 along the side of the first track rod 34, the vertical distance between the top of the lifting rope corresponding to the lifting lug body 31 and the top surface of the steel box corridor 1 is also adjusted, thus realizing the adjustment of the horizontal position of the steel box corridor 1.

[0041] Once the horizontal position of the steel box corridor 1 is adjusted, the starting circuit of the electromagnet 312 and the driving hydraulic cylinder 33 can be turned off. When the circuit of the electromagnet 312 is turned off, the magnetic force of the electromagnet 312 disappears, and the limiting lock tongue 313 has no magnetic attraction. Therefore, the limiting lock tongue 313 will automatically fall down under its own weight and embed into the locking tongue groove 341 on the top surface of the first track rod 34, thereby locking the position between the lifting lug body 31 and the first track rod 34.

[0042] Fixed lifting lugs 4 are provided at the four corners of the bottom of the steel box corridor 1. The fixed lifting lugs 4 are made of Q345B and have a thickness of 10mm.

[0043] Working principle of the invention:

[0044] First, the lifting lugs are connected, that is, the four lifting lugs 3 on the steel box girder 1 are connected to the four lifting ropes on the crane. This is done by using locking hooks to securely connect the four lifting ropes on the crane to the four lifting lugs 3 on the steel box girder 1, ensuring that the four lifting ropes do not slip off. Then, the crane is used to lift the steel box girder 1 to the designated position using the lifting ropes. Because the four lifting ropes are securely connected to the four lifting lugs 3 on the steel box girder 1, the steel box girder 1 is also moved during the crane's rope transport process, thus achieving... The steel box corridor 1 can be hoisted to the set position. Due to the different extension and contraction of the four hoisting ropes during the hoisting process, as well as the wind force during the hoisting process, the spatial position of the hoisted steel box corridor 1 may be incorrect. At this time, the connection points between the hoisting ropes on the crane and the steel box corridor 1 are adjusted according to the four hoisting lugs 3 on the steel box corridor 1. That is, the horizontal position of the four corners of the bottom surface of the steel box corridor 1 is adjusted according to the installation surface of the steel box corridor 1 so that the four corners of the bottom surface of the steel box corridor 1 fit the installation surface of the steel box corridor 1.

[0045] Specifically, when adjusting the position of the connection points between the hoisting ropes on the crane and the steel box corridor 1 using the four hoisting lugs 3, firstly, the starting circuit of the electromagnet 312 and the driving hydraulic cylinder 33 is turned on. Once the starting circuit is connected, the driving hydraulic cylinder 33 will drive the hoisting lug body 31. The hoisting lug body 31 will release the lateral force between the limiting lock tongue 313 and the first track rod 34. At this time, the electromagnet 312 also generates magnetic force, which will attract the limiting lock tongue 313. After the hoisting lug body 31 releases the lateral force between the limiting lock tongue 313 and the first track rod 34, the electromagnet 312 can... The limiting locking tongue 313 is attracted and overcomes its own weight to disengage from the locking tongue groove 341 on the first track rod 34. When the limiting locking tongue 313 disengages from the locking tongue groove 341, the lock between the lifting lug body 31 and the first track rod 34 is released. At this time, the driving hydraulic cylinder 33 drives the lifting lug body 31 to slide along the side of the first track rod 34. During the sliding process of the lifting lug body 31 along the side of the first track rod 34, the vertical distance between the top of the lifting rope corresponding to the lifting lug body 31 and the top surface of the steel box corridor 1 is also adjusted, thus realizing the adjustment of the horizontal position of the steel box corridor 1.

[0046] Once the horizontal position of the steel box corridor 1 is adjusted, the starting circuit of the electromagnet 312 and the driving hydraulic cylinder 33 can be turned off. When the circuit of the electromagnet 312 is turned off, the magnetic force of the electromagnet 312 disappears, and the limiting lock tongue 313 has no magnetic attraction. Therefore, the limiting lock tongue 313 will automatically fall down under its own weight and embed into the locking tongue groove 341 on the top surface of the first track rod 34, thereby locking the position between the lifting lug body 31 and the first track rod 34.

[0047] The adjusted steel box corridor 1 is then connected to its mounting surface. This is achieved by using a crane to move one side of the mounting surface of the steel box corridor 1 horizontally, completing the rear-end connection between the steel box corridor 1 and its mounting surface. The steel box corridor 1 is then fixed by welding. This method of installing the steel box corridor 1 avoids the need for separate welding and hoisting of steel components, greatly improving the installation efficiency and reducing the installation difficulty, thus lowering the installation cost.

[0048] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A method for installing a steel box girder corridor as a single, integral rear plug at high altitude, characterized in that, Includes the following steps: Lifting lug connection: Connect the four lifting lugs (3) on the steel box corridor (1) to the four lifting ropes on the crane; Crane hoisting: Using a crane, the steel box corridor (1) is hoisted to the designated location by the hoisting rope on the crane; Bottom surface adjustment: Adjust the connection point between the hoisting rope on the crane and the steel box corridor (1) according to the four hoisting lugs (3) on the steel box corridor (1). That is, adjust the horizontal position of the four corners of the bottom surface of the steel box corridor (1) according to the installation surface of the steel box corridor (1) so that the four corners of the bottom surface of the steel box corridor (1) fit the installation surface of the steel box corridor (1). Rear plug docking: Connect the adjusted steel box corridor (1) with the installation surface of the steel box corridor (1) to complete the rear plug docking of the steel box corridor (1) with the installation surface of the steel box corridor (1); The lifting lug (3) includes a lug body (31), an adjusting seat (32) on the outer side of the lug body (31), a first track rod (34) and a second track rod (35) installed on the inner side of the adjusting seat (32), the first track rod (34) penetrating the lug body (31); a limiting sleeve (311) is fixedly connected to the bottom of the lug body (31), the limiting sleeve (311) is nested on the outer side of the second track rod (35); an electromagnet (312) is provided inside the lug body (31) near the top of the first track rod (34), the bottom surface of the electromagnet (312) is provided with a limiting latch (313), and the top surface of the first track rod (34) is provided with a locking latch (313). (313) Mutually fitting locking tongue groove (341); a driving hydraulic cylinder (33) is fixedly connected to one side of the adjusting seat (32), and the output end of the driving hydraulic cylinder (33) passes through the adjusting seat (32) and is fixedly connected to one side of the lifting lug body (31). The electromagnet (312) and the driving hydraulic cylinder (33) use the same starting circuit. In the bottom surface debugging step, by controlling the starting circuit of the electromagnet (312) and the driving hydraulic cylinder (33), the limiting locking tongue (313) is disengaged from the locking tongue groove (341), and the lifting lug body (31) is driven to slide along the first track rod (34) to continuously adjust the horizontal position of the suspension rope connection point, thereby achieving precise debugging of the horizontal position of the four corners of the bottom surface of the steel box corridor (1).

2. The method for installing a steel box girder corridor as a whole at high altitude according to claim 1, characterized in that, The steel box corridor (1) is provided with steel column bracing (2) on both sides. The ends of the steel column bracing (2) are fully welded to the surface of the steel box corridor (1) by full penetration welding. The steel column bracing (2) is inclined at an angle of 45 degrees when it is welded.

3. The method for installing a steel box girder corridor as a whole at high altitude according to claim 1, characterized in that, The four lifting lugs (3) are located at one-quarter of the horizontal position in the middle of the steel box corridor (1). The lifting lugs (3) are made of Q345B and have a thickness of 10mm.

4. The method for installing a steel box girder corridor as a whole at high altitude according to claim 1, characterized in that, The bottom four corners of the steel box corridor (1) are provided with fixed lifting lugs (4), which are made of Q345B and have a thickness of 10mm.

Images