In-situ turnover method for large steel beam
Through the coordination of the robotic arm and auxiliary frame, combined with the design of buffer and anti-return frame, the in-situ turn of large steel beams is achieved, solving the problems of high costs and limited mechanical properties in the existing technology, reducing construction complexity and steel Risk of beam damage.
Patent Information
- Application Number
- CN202411210038.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2024-12-20
AI Technical Summary
In the construction of steel components, especially in the turning over of large steel beams, the prior art is limited by site conditions and lifting equipment performance, and cannot achieve in-situ turning over, resulting in high costs and limited mechanical performance.
A method is designed to use robotic arms, auxiliary frames, buffer frames and anti-return frames. The hooks are connected to the auxiliary frames through wire ropes, gradually lift and flip the steel beams, and the anti-return frames and cushion pads are set at specific angles to ensure that The stability and safety of steel beams reduce mechanical input and turnover times.
The in-situ turnover of large steel beams is achieved, reducing costs and construction complexity, ensuring the safety and stability of the turnover process, and is suitable for a variety of lifting equipment and reducing the damage to steel beams.
Smart Images
Figure CN119160755A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of steel structure construction, and in particular to an in-situ turning method for large steel beams. Background Art
[0002] Since steel components have the advantages of light weight, high strength, and good mechanical properties, especially for buildings that require large indoor space use functions, especially those with high requirements for indoor clearance, steel box beams are generally used as the main load-bearing components of the horizontal structure of the roof. Due to the large spatial span, large building load, and strict cost control, the steel beam structure is comprehensively considered and a box-type structure with a larger cross-section is selected to resist the overall load of the roof. For safety reasons, the large-section steel box beam needs to be horizontally transferred in a "lying" posture and turned over and stood up at the installation position to meet the installation posture requirements. In view of the inherent deficiencies in site conditions, limited performance of vertical transportation machinery, construction cost control and other constraints, the turning over of large steel beams needs to be achieved using the available conditions and resources on site, and this technical problem needs to be solved urgently.
[0003] At present, large steel beams are usually turned over by lifting with two or more cranes. Due to the site conditions and the performance of the lifting equipment, it is impossible to use multiple lifting machines to lift and turn. For similar large steel beam turning processes, professional turning machines developed on the market can be used to turn steel box beams at multiple angles. However, the cost of these turning machines is not low, so it will incur extremely high cost investment; secondly, due to the size of the machine itself, general turning machines can only turn over steel box beams within a certain width and height range; thirdly, this kind of turning machine generally requires the steel box beam to be hoisted from the assembly frame to the turning machine by a crane, and then hoisted away from the machine after the turning is completed. There may be multiple on-site relocations and the steel box beam cannot be turned over in situ.
[0004] Therefore, there is an urgent need to design a method for turning over large steel beams in situ by utilizing existing lifting equipment at the construction site to solve this problem existing in the actual existing technology at the construction site. Summary of the invention
[0005] In view of the above problems, the present invention discloses an in-situ turning method for a large steel beam, so as to solve the problem in the prior art of turning a large steel beam in-situ when a large mobile crane cannot be used in a restricted area.
[0006] The present invention discloses an in-situ turning method for a large steel beam, wherein the steel beam is arranged on a tire frame platform, wherein the method comprises the following steps:
[0007] An auxiliary frame is welded to each of the two 1 / 4 span distribution points on the upper flange of the steel beam, and a hoisting hole is opened at one end of the auxiliary frame away from the steel beam;
[0008] A buffer frame mechanism is fixed on the tire frame platform, the buffer frame mechanism is arranged adjacent to the lower flange of the steel beam, and a buffer pad is arranged on one side of the buffer frame mechanism adjacent to the lower flange of the steel beam;
[0009] Connecting the hook of the mechanical arm to the two auxiliary frames through a steel wire rope;
[0010] Use the hook to lift the steel beam through the wire rope, and suspend the lifting action of the hook when the steel beam forms an angle of 53° to 57° with the horizontal plane;
[0011] An anti-return frame is fixedly arranged on the tire frame platform, and one side of the anti-return frame is in contact with the side of the steel beam away from the buffer frame mechanism;
[0012] Lift the hook again. When the line connecting the center of gravity of the hook and the steel beam is perpendicular to the horizontal plane, stop the hook lifting action and swing the mechanical arm again after the steel beam becomes stable.
[0013] Swing the mechanical arm and lower the hook, and after the steel beam is moved downward and buffered with the buffer frame, remove the buffer frame and the anti-return frame, and add anti-roll support on both sides of the steel beam;
[0014] Completely unload the hook and remove the wire rope, hook and the auxiliary frame.
[0015] In some of the embodiments, the auxiliary frame includes an auxiliary frame body and a stiffening plate connected between the auxiliary frame body and the steel beam.
[0016] In some of the embodiments, the buffer frame mechanism is a right-angled triangle frame structure, and one right-angled surface of the buffer frame mechanism is welded and fixed to the tire frame platform, and the other right-angled surface is arranged close to the lower flange of the steel beam.
[0017] In some of the embodiments, the anti-return frame is a right-angled triangular frame structure, and a right-angled surface of the anti-return frame is welded and fixed to the tire frame platform, and the inclined surface of the anti-return frame abuts against the side of the steel beam away from the buffer frame mechanism.
[0018] In some of the embodiments, the anti-roll support is a diagonal support plate provided between the steel beam and the tire frame platform.
[0019] In some of the embodiments, after removing the auxiliary frame, the steel beam is subjected to anti-corrosion treatment.
[0020] In some of the embodiments, a plurality of buffer pads are equidistantly arranged on one side of the buffer frame mechanism adjacent to the lower flange of the steel beam.
[0021] In some of the embodiments, the buffer pad is a rubber pad.
[0022] In some of the embodiments, the steel wire rope is clamped in the lifting hole of the auxiliary frame through a clamping ring.
[0023] In some of the embodiments, the auxiliary frame, the buffer frame mechanism, the anti-return frame and the anti-roll support are all made of steel sections.
[0024] Compared with the prior art, the above invention has at least the following advantages or beneficial effects:
[0025] The present invention provides a method for turning over a large steel beam on site, wherein a mechanical arm is used to lift and turn over the large steel beam through an auxiliary frame, and a group of buffer frame mechanisms are provided to prevent the large steel beam from overshooting and turning over due to inertia. When the large steel beam is lifted, after exceeding a certain turning angle, an anti-return frame is provided to prevent the large steel beam from returning to the turning point after being disturbed and vibrated due to the incoordination of the operation of the lifting machinery and the shaking of the lifting equipment itself, causing the lifting equipment to be instantly overloaded and unstable and overturned. The method only uses rubber pads, clamps and small-section steel, which is convenient to purchase and process, with low investment, low cost, simple operation and no multiple transfers. Moreover, due to the use of the auxiliary frame, more machines can be applied by adjusting the length of the auxiliary frame for working conditions with limited performance of the lifting equipment. In addition, the present invention adopts the "one hook and two points" mode, which reduces the mechanical investment and reduces the cost. The rubber pad is used for buffering and shock absorption, which reduces the damage to the paint of the steel beam. The anti-return frame is used to ensure the safety of the steel beam turning over. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.
[0027] Figure 1 It is a flow chart of a method for turning over a large steel beam in situ on site in an embodiment of the present invention;
[0028] Figures 2 to 8 It is a structural schematic diagram of the in-situ turning method of a large steel beam in an embodiment of the present invention;
[0029] Among them, 1. Steel beam; 2. Auxiliary frame; 3. Buffer frame mechanism; 4. Buffer pad; 5. Lifting hole; 6. Steel wire rope; 7. Hook; 8. Anti-return frame; 9. Anti-roll support; 10. Tire frame platform. DETAILED DESCRIPTION
[0030] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be a limitation of the present invention.
[0031] like Figure 1 As shown, the present invention discloses an in-situ turning method for a large steel beam, wherein the steel beam 1 is arranged on a tire frame platform 10. Specifically, the method comprises the following steps:
[0032] Step S1, an auxiliary frame 2 is welded to each of the two 1 / 4 span distribution points on the upper flange of the steel beam 1, and each auxiliary frame 2 is provided with a hoisting hole 5 at one end away from the steel beam 1. Figure 2 The structure shown.
[0033] Specifically, the auxiliary frame 2 includes an auxiliary frame body and a stiffening plate connected between the auxiliary frame 2 body and the steel beam 1 . One end of the auxiliary frame body is welded and fixed to the upper flange of the steel beam 1 .
[0034] Step S2, a buffer frame mechanism 3 is fixed on the tire frame platform 10, and the buffer frame mechanism 3 is arranged near the lower flange of the steel beam 1 (it can also be said that the buffer frame mechanism 3 is located on the side of the steel beam 1 after it turns over and stands up) to prevent the steel beam 1 from excessively turning over and becoming unstable due to inertia when turning over, and a plurality of buffer pads 4 are equidistantly arranged on one side of the buffer frame mechanism 3 near the lower flange of the steel beam 1, such as Figure 3 The structure shown.
[0035] Specifically, the buffer frame mechanism 3 is a right-angled triangle frame structure, and one right-angled surface of the buffer frame mechanism 3 is welded and fixed on the tire frame platform 10, and the other right-angled surface is arranged close to the lower flange of the steel beam 1, and the buffer pad 4 is a rubber pad.
[0036] Step S3, connect the hook 7 of the robot arm with the two auxiliary frames 2 through the wire rope 6; specifically, the wire rope 6 is clamped in the lifting hole 5 of the auxiliary frame 2 through the clamp to connect the wire rope 6 with the auxiliary frame 2 through the clamp. This embodiment adopts the "one hook and two points" mode, which reduces mechanical investment and reduces costs.
[0037] Step S4, using the hook 7 to lift the steel beam 1 through the wire rope 6 to perform a preliminary lifting and flipping of the steel beam 1, the hook 7 gradually and slowly lifts the steel beam 1 through the wire rope 6, observes the stable state of the steel beam 1, and pauses the lifting action of the hook 7 when the steel beam 1 forms an angle of 53° to 57° with the horizontal plane. Figure 4 The structure shown.
[0038] Step S5, a pre-made anti-return frame 8 is fixedly installed on the tire frame platform 10, and the anti-return frame 8 is placed at the position where the steel beam 1 has been pre-lifted and paused, so that one side of the anti-return frame 8 is in contact with the side of the steel beam 1 away from the buffer frame mechanism 3 to support the steel beam 1; to prevent the large steel beam from being disturbed and oscillated due to the incoordination of the lifting machinery operation and the shaking of the lifting equipment itself, and then return to the starting point, causing the lifting equipment to be instantly overloaded and unstable and overturned. Specifically, the anti-return frame 8 is welded and fixed to the tire frame platform 10, such as Figure 5 The structure shown.
[0039] Specifically, the anti-return frame 8 is a right-angled triangle frame structure, and a right-angled surface of the anti-return frame 8 is welded and fixed on the tire frame platform 10, and the inclined surface of the anti-return frame 8 abuts against the side of the steel beam 1 away from the buffer frame mechanism 3.
[0040] Step S6, confirm that the anti-return frame 8 has been welded firmly, start to slowly lift the hook 7 again, when the line connecting the center of gravity of the hook 7 and the steel beam 1 is perpendicular to the horizontal plane, suspend the lifting action of the hook 7, and swing the mechanical arm again after the steel beam 1 tends to be stable, such as Figure 6 The structure shown.
[0041] Step S7, slowly swing the mechanical arm and slowly lower the hook 7, and remove the buffer frame and anti-return frame 8 after the steel beam 1 is moved downward and buffered in place with the buffer frame until the steel beam 1 is completely stable, and then add anti-roll support 9 on both sides of the steel beam 1. Figure 7 The structure shown.
[0042] Specifically, the anti-roll support 9 is a diagonal support plate arranged between the steel beam 1 and the tire frame platform 10.
[0043] Step S8, completely unload the hook 7, remove the wire rope 6, the hook 7 and the auxiliary frame 2, and after removing the auxiliary frame 2, perform anti-corrosion treatment on the steel beam 1, such as Figure 8 The structure shown.
[0044] In the embodiment of the present invention, the auxiliary frame 2, the buffer frame mechanism 3, the anti-return frame 8 and the anti-roll support 9 are all made of steel.
[0045] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.
[0046] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.
Claims
1. A method for turning over a large steel beam in situ, wherein the steel beam is arranged on a tire frame platform, characterized in that: The method comprises the following steps: An auxiliary frame is welded to each of the two 1 / 4 span distribution points on the upper flange of the steel beam, and a hoisting hole is opened at the end of the auxiliary frame away from the steel beam; A buffer frame mechanism is fixed on the tire frame platform, the buffer frame mechanism is arranged adjacent to the lower flange of the steel beam, and a buffer pad is arranged on one side of the buffer frame mechanism adjacent to the lower flange of the steel beam; Connecting the hook of the robotic arm to the two auxiliary frames via a steel wire rope; Use the hook to lift the steel beam through the wire rope, and suspend the lifting action of the hook when the steel beam forms an angle of 53° to 57° with the horizontal plane; An anti-return frame is fixedly installed on the tire frame platform, and one side of the anti-return frame abuts against the side of the steel beam away from the buffer frame mechanism; Lift the hook again. When the line connecting the center of gravity of the hook and the steel beam is perpendicular to the horizontal plane, suspend the hook lifting action and swing the robotic arm again after the steel beam becomes stable. Swing the robotic arm and lower the hook, and after the steel beam is lowered and buffered with the buffer frame, remove the buffer frame and the anti-return frame, and add anti-roll supports on both sides of the steel beam; Completely unload the hook and remove the wire rope, hook and the auxiliary frame.
2. The in-situ turning method for large steel beams according to claim 1, characterized in that: The auxiliary frame includes an auxiliary frame body and a stiffening plate connected between the auxiliary frame body and the steel beam.
3. The in-situ turning method for large steel beams according to claim 1, characterized in that: The buffer frame mechanism is a right-angled triangle frame structure, and one right-angled surface of the buffer frame mechanism is welded and fixed on the tire frame platform, and the other right-angled surface is arranged close to the lower flange of the steel beam.
4. The in-situ turning method for large steel beams according to claim 1, characterized in that: The anti-return frame is a right-angled triangle frame structure, and a right-angled surface of the anti-return frame is welded and fixed to the tire frame platform, and the inclined surface of the anti-return frame abuts against the side of the steel beam away from the buffer frame mechanism.
5. The in-situ turning method for large steel beams according to claim 1, characterized in that: The anti-roll support is a diagonal support plate arranged between the steel beam and the tire frame platform.
6. The in-situ turning method for large steel beams according to claim 1, characterized in that: After the auxiliary frame is removed, the steel beam is subjected to anti-corrosion treatment.
7. The in-situ turning method for large steel beams according to claim 1, characterized in that: A plurality of buffer pads are equidistantly arranged on one side of the buffer frame mechanism adjacent to the lower flange of the steel beam.
8. The in-situ turning method for large steel beams according to claim 1, characterized in that: The buffer pad is a rubber pad.
9. The in-situ turning method for large steel beams according to claim 1, characterized in that: The steel wire rope is clamped in the hoisting hole of the auxiliary frame through a clamping ring.
10. The in-situ turning method for a large steel beam according to claim 1, characterized in that: The auxiliary frame, the buffer frame mechanism, the anti-return frame and the anti-roll support are all made of section steel.