Steel structure jacking protection device

Abstract

A steel structure jacking protection device comprises bottom plates capable of being spliced, an elastic clamping device, a mechanical buffering device and an air buffering device, the bottom plates are elastically clamped to the two sides of a steel structure wing plate through the clamping device, a bottom face magnetic attraction plate assists in fixing, and the adjacent bottom plates are spliced and combined through a T-shaped rail groove structure; the mechanical buffering device achieves elastic supporting through a compression spring and a telescopic rod, an air bag of the air buffering device is embedded in a buffering cushion, the air bag and the buffering cushion form a rigid-flexible combined double buffering system, and different jacking loads can be dynamically adapted by adjusting the air pressure of the air bag. The device automatically adapts to steel structure wing plates with different sections through an elastic clamping structure, and the stability under the high-altitude or inclined working condition is improved through magnetic attraction fixing; the modular bottom plate supports free splicing and is suitable for complex node layout; the double-buffering system has the low-frequency impact absorption capacity of a mechanical spring and the high-frequency vibration buffering characteristic of an air bag, the local stress of the steel structure can be controlled within the safety range, and the safety of jacking operation and the universality of equipment are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for steel structure construction, and specifically relates to a steel structure lifting protection device. Background Technology

[0002] In the construction or maintenance of steel structure buildings, jacking is a common technique for adjusting structural elevation and addressing uneven settlement. However, existing jacking equipment presents the following technical problems during operation:

[0003] 1. Traditional jacking devices mostly rely on a single mechanical spring or rubber pad for buffering. When faced with sudden loads or vibrations, the buffering effect is limited, which can easily lead to local stress concentration or even deformation and damage to the steel structure.

[0004] 2. Steel structures have diverse cross-sectional forms (such as H-beams, I-beams, etc.), and the existing protective devices typically use fixed clips for fixing, which makes it difficult to quickly adapt to steel structures with different flange sizes, resulting in low installation efficiency and insufficient stability;

[0005] 3. The steel structure layout of the construction site is complex. Traditional base plates are mostly designed as one piece, which cannot be flexibly spliced ​​according to the actual jacking points, resulting in poor equipment versatility.

[0006] 4. The buffering force of existing buffer devices is mostly a fixed value, which cannot be dynamically adjusted according to parameters such as the weight of the steel structure and the lifting height, making it difficult to meet diverse construction needs. Summary of the Invention

[0007] In view of the technical problems existing in the background technology, the present invention provides a steel structure lifting protection device, which effectively solves the problems of insufficient buffer protection and poor installation adaptability in the prior art by setting up a dual buffer system consisting of a mechanical buffer device and an air buffer device, combined with a splicable base plate, an elastic clamping structure and a magnetic auxiliary fixing component. It has the advantages of simple structure, high degree of modularity and adjustable buffer performance, and is suitable for various steel structure lifting projects.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A steel structure lifting protection device includes a base plate, a clamping device, a mechanical buffer device, and an air buffer device. The base plate is clamped to the steel structure by the clamping device, and the base plates are spliced ​​together. The mechanical buffer device is elastically connected to the base plate, and the air buffer device is installed inside the mechanical buffer device. The mechanical buffer device and the air buffer device constitute a dual buffer system to protect the steel structure during the lifting process.

[0010] In a preferred embodiment, the clamping device includes an L-shaped clamping plate, a first telescopic rod, and a tension spring; the first telescopic rod is movably inserted into the side of the base plate, the other end of the first telescopic rod is perpendicularly connected to the L-shaped clamping plate, and a tension spring is sleeved on the outer wall of the first telescopic rod. The two ends of the tension spring are respectively connected to the L-shaped clamping plate and the base plate, and the L-shaped clamping plates on both sides tighten and fix the two sides of the steel structure wing plate.

[0011] In a preferred embodiment, a T-shaped rail is provided on one side of the base plate, and a corresponding T-shaped slot is provided on the other side of the base plate. The base plate is slidably connected to the T-shaped rail and the T-shaped slot to form an integral unit.

[0012] In a preferred embodiment, the mechanical buffer device includes a buffer pad, a sleeve rod, a second telescopic rod, and a compression spring; one end of the sleeve rod is perpendicularly connected to the upper end face of the base plate, the second telescopic rod is inserted into the sleeve rod, the second telescopic rod slides freely within the sleeve rod and its end is perpendicularly connected to the buffer pad, the lower end face of the buffer pad is sleeved on the outside of the sleeve rod, and a compression spring is sleeved on the outer wall of the sleeve rod, the two ends of the compression spring being connected to the buffer pad and the base plate respectively.

[0013] In a preferred embodiment, the buffer pad has a hollow structure and is made of a flexible material, with through holes.

[0014] In a preferred embodiment, the air cushion device includes an airbag fixed inside the cushioning pad, the airbag having an inflation port and an air valve.

[0015] In a preferred embodiment, a groove is provided on the bottom surface of the base plate, and a magnetic suction plate is embedded in the groove.

[0016] A steel structure lifting and protection device, which can achieve the following beneficial effects in actual use:

[0017] 1. The compression spring and the second telescopic rod in the mechanical buffer device constitute the basic buffer structure, absorbing the vibration load during the jacking process through elastic deformation; the airbag in the air buffer device can adjust the internal air pressure through the inflation port to form a flexible buffer layer. The combination of these two components forms a dual buffer system that combines rigidity and flexibility, capable of handling the mechanical buffering requirements of high-frequency vibrations while also adapting to steel structures of different weights through air pressure adjustment, avoiding localized stress concentration and protecting the steel structure from damage. Adjusting the air pressure inside the airbag via the air valve allows for real-time changes in the buffer stiffness of the air buffer device. Combined with the inherent elastic characteristics of the mechanical buffer device, this enables graded adjustment of the buffering force, meeting the precise protection requirements under different jacking heights and load conditions.

[0018] 2. The L-shaped clamping plate of the clamping device forms an elastic clamping structure through the first telescopic rod and the tension spring. It can automatically adjust the clamping force according to the thickness of the steel structure wing plate, allowing for quick installation on both sides of steel structure wing plates of different cross-sections such as H-beams and I-beams without tools. This solves the problem of poor compatibility of traditional fixed clips and significantly improves installation efficiency. The magnetic plate in the groove on the bottom of the base plate can magnetically attract the steel structure surface. Combined with the mechanical clamping of the clamping device, it forms a double mechanical-magnetic fixation, effectively preventing the device from shifting during the lifting process. It is especially suitable for stable installation in high-altitude or inclined environments.

[0019] 3. The base plate, through a sliding insertion structure of T-shaped rails and T-shaped slots, can be freely assembled and disassembled according to the actual spacing and layout of the jacking points. A single base plate can be used independently, and multiple base plates can be combined into support arrays of different sizes. This design breaks through the limitations of traditional integrated base plates, making the device suitable for the protection needs of complex steel structure nodes, greatly improving versatility, and reducing the storage and transportation costs of construction equipment.

[0020] 4. The buffer pad is made of flexible material with a hollow structure and through holes. This reduces the overall weight of the device while improving airflow to reduce heat buildup during the buffering process and extend the service life of the mechanical buffer. The air bladder of the air buffer is an independent, detachable component, making replacement costs far lower than traditional hydraulic buffer elements. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram showing the overall installation effect of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is an enlarged schematic diagram of the base plate splicing structure of this utility model;

[0025] Figure 4 This is a side view of the air-relieving device of this utility model;

[0026] Figure 5 This is a bottom view of the base plate structure of this utility model.

[0027] In the diagram: 1. Steel structure; 2. Base plate; 3. T-rail; 4. T-slot; 5. Groove; 6. Magnetic suction plate; 7. Clamping device; 8. L-shaped clamping plate; 9. First telescopic rod; 10. Tension spring; 11. Mechanical buffer device; 12. Buffer pad; 13. Through hole; 14. Sleeve rod; 15. Second telescopic rod; 16. Compression spring; 17. Air buffer device; 18. Airbag; 19. Inflation port; 20. Air valve; 31. Detailed Implementation

[0028] like Figure 1 As shown, a steel structure lifting protection device includes: a steel structure 1, a base plate 2, a magnetic suction plate 3, a clamping device 4, a mechanical buffer device 5, and an air buffer device 6. The base plate 2 is clamped to both sides of the wing plate of the steel structure 1 by the clamping device 4. Adjacent base plates 2 are spliced ​​together by sliding insertion of T-shaped rails 201 and T-shaped slots 202. The upper surface of the base plate 2 is elastically connected to the mechanical buffer device 5 by a sleeve rod 503. The air buffer device 6 is embedded in the buffer pad 501 of the mechanical buffer device 5. Together, they form a double buffer system, providing three-dimensional protection for the steel structure 1 during the lifting process.

[0029] Preferred solutions include Figure 2 As shown, the clamping device 4 adopts an elastic clamping structure, including an L-shaped clamping plate 401, a first telescopic rod 402, and a tension spring 403. The first telescopic rod 402 is movably inserted into a guide hole on the side of the base plate 2, and its end is vertically fixed to the L-shaped clamping plate 401 by welding or bolting. The tension spring 403 is sleeved on the outer wall of the first telescopic rod 402, and its two ends are respectively connected to the inner boss of the L-shaped clamping plate 401 and the hook on the side of the base plate 2. When the device is installed, the horizontal sections of the L-shaped clamping plates 401 on both sides fit against the upper and lower surfaces of the wing plate of the steel structure 1, and the vertical sections form an elastic clamping force through the tension of the tension spring 403. This adapts to standard cross-sections such as H-beams and I-beams with wing plate thicknesses of 5-30mm, allowing for quick installation without tools, with an installation error ≤0.5mm.

[0030] Preferred solutions include Figure 3 As shown, the base plate 2 is a rectangular plate made of Q235B steel. One side has a T-shaped rail 201, and the other side has a matching T-shaped slot 202. The cross-sectional dimensions of the rail and slot conform to the GB / T15675-2008 mechanical guide rail standard. Adjacent base plates 2 slide into each other by horizontally pushing the rail into the slot. After insertion, end-limiting protrusions prevent detachment. They can be spliced ​​into a support array with a maximum side length of 3m. A rectangular groove 203 with a depth of 5mm is opened on the bottom surface of the base plate 2. A neodymium iron boron magnetic suction plate 3 is embedded inside. The surface of the magnetic suction plate 3 is flush with the bottom surface of the base plate 2, and its adsorption force on the surface of the steel structure 1 is ≥500N, ensuring stable fixation of the device under tilt angles ≤15°.

[0031] Preferred solutions include Figure 2As shown, the mechanical buffer device 5 includes a buffer pad 501, a sleeve rod 503, a second telescopic rod 504, and a compression spring 505. The sleeve rod 503 is welded to the center of the upper surface of the base plate 2, and has a guide hole with a diameter of 30mm inside. The second telescopic rod 504 is clearance-fitted with the guide hole, and its top end is fixed to the center of the bottom surface of the buffer pad 501 by a countersunk screw. The compression spring 505 is made of 60Si2Mn spring steel, with an outer diameter of 40mm and a free length of 80mm. It is fitted onto the outer wall of the sleeve rod 503, and its two ends abut against the convex ring on the bottom surface of the buffer pad 501 and the limiting ring on the upper surface of the base plate 2, respectively. The buffer pad 501 is made of polyurethane elastomer with a Shore hardness of 60A. It has a hollow cavity inside and eight through holes 502 with a diameter of 10mm are evenly opened in the circumference to realize air convection heat dissipation during the buffering process and reduce the temperature rise effect caused by long-term vibration.

[0032] Preferred solutions include Figure 4 As shown, the airbag 601 of the air cushioning device 6 is made of nitrile rubber and its shape fits the inner wall of the hollow cavity of the buffer pad 501. It is fixed to the inside of the buffer pad 501 with environmentally friendly adhesive. An inflation port 602 is provided on one side of the airbag 601. The inflation port 602 has a built-in one-way air valve 603. The working pressure range of the air valve 603 is 0.2-0.8MPa, and the air pressure can be adjusted by a manual air pump or a vehicle-mounted inflation device. When the lifting load changes, the stiffness of the buffering system can be continuously adjusted within the range of 10-50N / mm by adjusting the air pressure inside the airbag 601, so as to meet the buffering requirements of steel structures 1 of different tonnages (5-50 tons).

[0033] Preferred solutions include Figure 5 As shown, the groove 203 on the bottom surface of the base plate 2 is rectangular, and its size precisely matches that of the magnetic plate 3. The magnetic plate 3 is fixed in the groove 203 by countersunk bolts with a uniform bolt spacing of 100mm. The magnetic plate 3 uses N35 neodymium iron boron permanent magnet material with nickel plating, a residual magnetism of ≥1.2T, and a contact area of ​​≥90% with the surface of the steel structure 1. Combined with the mechanical clamping force of the clamping device 4, a double fixing structure is formed. Tests show that under vibration frequency of 20-50Hz and amplitude of ±2mm, the displacement of the device is ≤0.1mm.

[0034] Working principle: During installation, the single or spliced ​​base plate 2 is first attached to the position of the steel structure 1 to be lifted by the magnetic suction plate 3. The L-shaped clamping plate 401 is pushed to pre-stretch the tension spring 403 until the clamping plate clamps the wing plate. During the lifting process, the vibration load of the steel structure 1 is transmitted to the second telescopic rod 504 through the buffer pad 501. The compression spring 505 absorbs the low-frequency large amplitude impact, and the airbag 601 buffers the high-frequency small amplitude vibration through air pressure change. The dual buffering system works together to control the local stress of the steel structure 1 to below 70% of the allowable stress, effectively protecting the structural safety.

[0035] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A steel structure lifting protection device, comprising a base plate (2), a clamping device (4), a mechanical buffer device (5), and an air buffer device (6), characterized in that: The base plate (2) is clamped onto the steel structure (1) by the clamping device (4). The base plates (2) are spliced ​​together. A mechanical buffer device (5) is elastically connected to the base plate (2). An air buffer device (6) is installed inside the mechanical buffer device (5). The mechanical buffer device (5) and the air buffer device (6) constitute a double buffer system and protect the steel structure (1) during the lifting process.

2. The steel structure lifting protection device according to claim 1, characterized in that: The clamping device (4) includes an L-shaped clamping plate (401), a first telescopic rod (402), and a tension spring (403); the first telescopic rod (402) is movably inserted into the side of the base plate (2), and the other end of the first telescopic rod (402) is vertically connected to the L-shaped clamping plate (401). A tension spring (403) is sleeved on the outer wall of the first telescopic rod (402). The two ends of the tension spring (403) are respectively connected to the L-shaped clamping plate (401) and the base plate (2). The L-shaped clamping plates (401) on both sides tighten and fix the two sides of the steel structure (1) wing plate.

3. The steel structure lifting protection device according to claim 1, characterized in that: A T-shaped rail (201) is provided on one side of the base plate (2), and a T-shaped slot (202) is provided on the other side of the base plate (2). The base plate (2) is slidably connected to the T-shaped rail (201) and the T-shaped slot (202) to form an integral unit.

4. The steel structure lifting protection device according to claim 1, characterized in that: The mechanical buffer device (5) includes a buffer pad (501), a sleeve rod (503), a second telescopic rod (504), and a compression spring (505); one end of the sleeve rod (503) is perpendicularly connected to the upper end face of the base plate (2), the second telescopic rod (504) is inserted into the sleeve rod (503), the second telescopic rod (504) slides freely in the sleeve rod (503) and its end is perpendicularly connected to the buffer pad (501), the lower end face of the buffer pad (501) is sleeved on the outside of the sleeve rod (503), and a compression spring (505) is sleeved on the outer wall of the sleeve rod (503). The two ends of the compression spring (505) are respectively connected to the buffer pad (501) and the base plate (2).

5. The steel structure lifting protection device according to claim 4, characterized in that: The buffer pad (501) has a hollow structure and is made of flexible material. The buffer pad (501) has through holes (502).

6. The steel structure lifting protection device according to claim 4, characterized in that: The air cushion device (6) includes an airbag (601), which is fixed inside the buffer pad (501). An inflation port (602) is provided on the airbag (601), and an air valve (603) is provided at the inflation port (602).

7. The steel structure lifting protection device according to claim 1, characterized in that: A groove (203) is provided on the bottom surface of the base plate (2), and a magnetic suction plate (3) is embedded in the groove (203).

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