Large-span steel truss convenient to hoist

Abstract

The utility model provides a large-span steel truss convenient to hoist, and belongs to the field of steel structure construction. According to the technical scheme, the steel truss comprises a steel truss body, a fixing base is arranged at the top of the steel truss body, rectangular plates are installed at the front end and the rear end of the steel truss body, first bolts are connected to the two rectangular plates in a threaded mode, two threaded grooves are formed in the bottom of the fixing base, and the top ends of the two first bolts are connected with the corresponding threaded grooves in a threaded mode; the two clamping and supporting mechanisms are installed on the steel truss body, the threaded limiting mechanisms are installed on the fixing bases, and the hoisting and fastening mechanisms are installed on the fixing bases. The utility model has the beneficial effects that the steel truss main body can be quickly and conveniently fixed and clamped, the steel truss main body is prevented from being fixed and limited through a steel strand so as to be lifted, the lifting is convenient, the lifting ring is conveniently fixed on a temporary lifting appliance, the stability in the lifting process is enhanced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel structure construction, in particular to a large-span steel truss which is convenient for hoisting. Background Art

[0002] Steel structures are widely used not only in marine engineering and bridge engineering, but also in industrial and civil construction. Steel structures are increasingly used in my country's building structures. Due to its strong adaptability, it has been widely used in large-span space structures in recent years. The resulting assembly and hoisting conditions are becoming more and more complex, and the technical requirements are becoming higher and higher. It is more common in daily life.

[0003] The patent document with application number CN108468430B discloses a construction method for lifting and sliding of a steel truss structure with large spans and unequal height supports, including the following steps: A. Setting supports on the steel trusses, installing sliding equipment and jacking equipment; B. Dividing the frames, assembling them into shape, lifting the steel trusses to a specified height, lifting one frame at a time, splicing the frames that are lifted into place later with the frames that have been lifted into place before, sliding the previous frames using sliding equipment and jacking equipment, freeing up space within the operating range of the lifting equipment, and then lifting the steel trusses to the specified position; C. After the sliding is completed, the supports are removed. The lifting and sliding construction method for a steel truss structure with large spans and unequal height supports of this application can lower the threshold for the grade of lifting machinery and energy consumption, reduce the area occupied by pre-assembly, reduce component deformation, and improve the overall forming quality of the structure.

[0004] However, when the traditional large-span steel trusses that are easy to hoist are hoisted on the corridor, the steel trusses are fixed and limited by steel strands for lifting. Since the connection stability between the steel strands and the temporary hoists is low, the steel trusses are prone to fall off, which brings safety hazards and easily causes the steel trusses to break. The hoisting efficiency is low and cannot meet the needs of use. Utility Model Content

[0005] The purpose of the utility model is to provide a large-span steel truss that is easy to hoist and can quickly and conveniently fix and clamp the steel truss body, avoiding the need to fix and limit the steel truss body by steel strands for lifting, making it easy to hoist, and convenient to fix the lifting ring on a temporary hoisting device, thereby enhancing the stability of the hoisting process and improving the construction efficiency.

[0006] The utility model is achieved through the following measures:

[0007] A large-span steel truss that is easy to hoist, comprising a steel truss body, characterized in that a fixing seat is arranged on the top of the steel truss body, a rectangular plate is installed at the front end and the rear end of the steel truss body, a first bolt is threadedly connected to the two rectangular plates, two thread grooves are arranged at the bottom of the fixing seat, and the top ends of the two first bolts are respectively threadedly connected to the corresponding thread grooves;

[0008] It also includes two clamping support mechanisms installed on the steel truss body, a threaded limiting mechanism installed on the fixing seat, and a hoisting and fastening mechanism installed on the fixing seat.

[0009] The specific features of the utility model also include:

[0010] The clamping support mechanism includes two clamping plates, and the sides of the two clamping plates close to each other are slidably connected to the steel truss body. The sides of the two clamping plates close to each other are installed with support plates, and the tops of the two support plates are slidably connected to the bottom of the steel truss body.

[0011] The threaded fixing mechanism includes two movable plates, the bottom ends of the two movable plates are respectively connected to the top ends of the corresponding clamping plates, the two movable plates are threadedly connected with threaded rods, the ends of the two threaded rods close to each other are rotatably connected to one side of the fixed seat, the ends of the two threaded rods away from each other are installed with knobs, the two movable plates are slidably connected with limiting columns, the ends of the two limiting columns close to each other are connected to one side of the fixed seat, and the ends of the two limiting columns away from each other are installed with limiting disks.

[0012] The lifting and fastening mechanism includes a lifting ring, the bottom of which is connected to the top of the fixing seat, and second bolts are threadedly connected to both sides of the lifting ring. The ends of the two second bolts that are close to each other extend into the lifting ring and are installed with fixing plates, and the sides of the two fixing plates that are close to each other are installed with fixing teeth, and the two fixing teeth are adapted to each other.

[0013] The two support plates are both trapezoidal structures.

[0014] The number of the fixed teeth is several, and the fixed teeth are distributed at equal distances.

[0015] When in use, place the fixing seat on the top of the steel truss body, then screw the two first bolts, so that the two first bolt threads are clamped into the two threaded grooves, fix the fixing seat, fix the fixing seat on the steel truss body, and then turn the two knobs, the two knobs drive the two threaded rods to rotate, the two threaded rods drive the two moving plates to move toward the side close to each other, the two limit columns limit the two moving plates in the horizontal direction, the two moving plates drive the two clamping plates to move toward the side close to each other, the two clamping plates fix and clamp the steel truss body, at the same time, the two clamping plates drive the two supporting plates to move toward the side close to each other, the two supporting plates move to the bottom of the steel truss body, the two supporting plates support and fix the steel truss body, after the support is fixed, then hang the hook on the temporary sling into the lifting ring, screw the two second bolts, the two second bolts drive the two fixing plates to move toward the side close to each other, the two fixing plates drive the fixing teeth to move, the two fixing teeth fix and clamp the hook on the temporary sling, it is convenient to fix the lifting ring on the temporary sling, and the stability of the lifting process is enhanced.

[0016] The beneficial effects of the utility model are:

[0017] It can quickly and conveniently fix and clamp the main body of the steel truss, avoiding the need to fix and limit the main body of the steel truss by steel strands for lifting. Since the connection stability between the steel strands and the temporary lifting device is low, the main body of the steel truss is prone to fall off, which is convenient for lifting and fixing the lifting ring on the temporary lifting device, enhancing the stability of the lifting process and improving construction efficiency.

[0018] The utility model discloses a large-span steel truss that is easy to hoist. It is mainly used for traditional large-span steel trusses that are easy to hoist. When the steel trusses on the corridor are hoisted, the steel trusses are fixed and limited by steel strands for lifting. Since the connection stability between the steel strands and the temporary hoists is low, the steel trusses are prone to fall off, which brings safety hazards and easily causes the steel trusses to be damaged, resulting in low hoisting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a fixing seat according to an embodiment of the utility model.

[0021] Figure 3 It is an enlarged structural schematic diagram of the lifting and fastening mechanism of an embodiment of the utility model.

[0022] Among them, the figure markings are: 1. steel truss body; 2. fixed seat; 3. rectangular plate; 4. first bolt; 5. threaded groove; 6. clamping plate; 7. support plate; 8. movable plate; 9. threaded rod; 10. knob; 11. limit column; 12. limit plate; 13. lifting ring; 14. second bolt; 15. fixed plate; 16. fixed tooth. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0024] See also Figure 1-3 A large-span steel truss that is easy to hoist includes a steel truss body 1, a fixing seat 2 is arranged on the top of the steel truss body 1, rectangular plates 3 are installed at the front and rear ends of the steel truss body 1, first bolts 4 are threadedly connected to the two rectangular plates 3, two thread grooves 5 are arranged at the bottom of the fixing seat 2, and the top ends of the two first bolts 4 are threadedly connected to the corresponding thread grooves 5 respectively;

[0025] It also includes two clamping support mechanisms installed on the steel truss body 1, a threaded limiting mechanism installed on the fixing seat 2, and a hoisting and fastening mechanism installed on the fixing seat 2.

[0026] The clamping support mechanism includes two clamping plates 6, and the sides of the two clamping plates 6 close to each other are slidably connected to the steel truss body 1. The sides of the two clamping plates 6 close to each other are installed with support plates 7, and the tops of the two support plates 7 are slidably connected to the bottom of the steel truss body 1.

[0027] The threaded fixing mechanism includes two movable plates 8, the bottom ends of the two movable plates 8 are respectively connected to the top ends of the corresponding clamping plates 6, and the two movable plates 8 are threadedly connected with threaded rods 9. The ends of the two threaded rods 9 that are close to each other are rotatably connected to one side of the fixed seat 2, and the ends of the two threaded rods 9 that are away from each other are installed with knobs 10. The two movable plates 8 are slidably connected with limiting columns 11, the ends of the two limiting columns 11 that are close to each other are connected to one side of the fixed seat 2, and the ends of the two limiting columns 11 that are away from each other are installed with limiting disks 12.

[0028] The lifting and fastening mechanism includes a lifting ring 13, the bottom of which is connected to the top of the fixing seat 2, and second bolts 14 are threadedly connected to both sides of the lifting ring 13. The ends of the two second bolts 14 that are close to each other extend into the lifting ring 13 and are installed with fixing plates 15. The sides of the two fixing plates 15 that are close to each other are installed with fixing teeth 16, and the two fixing teeth 16 are adapted to each other.

[0029] The two support plates 7 are both trapezoidal structures.

[0030] There are a plurality of fixed teeth 16 , and the fixed teeth 16 are distributed at equal distances.

[0031] When in use, place the fixing seat 2 on the top of the steel truss body 1, and then screw the two first bolts 4 so that the two first bolts 4 are threadedly clamped into the two thread grooves 5 to fix the fixing seat 2, fix the fixing seat 2 on the steel truss body 1, and then turn the two knobs 10, the two knobs 10 drive the two threaded rods 9 to rotate, the two threaded rods 9 drive the two moving plates 8 to move toward the side close to each other, the two limiting columns 11 limit the two moving plates 8 in the horizontal direction, the two moving plates 8 drive the two clamping plates 6 to move toward the side close to each other, and the two clamping plates 6 fix and clamp the steel truss body 1. At the same time, the two clamping plates 6 drive the two supporting plates 7 to move toward the side close to each other, and the two supporting plates 7 move to the bottom of the steel truss body 1. The two supporting plates 7 support and fix the steel truss body 1. After support and fixation, the hook on the temporary sling is then hung into the lifting ring 13, and the two second bolts 14 are screwed. The two second bolts 14 drive the two fixing plates 15 to move toward the side close to each other, and the two fixing plates 15 drive the fixing teeth 16 to move. The two fixing teeth 16 fix and clamp the hook on the temporary sling, which makes it convenient to fix the lifting ring 13 on the temporary sling, thereby enhancing the stability of the lifting process.

[0032] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A large-span steel truss that is easy to hoist, comprising a steel truss body, characterized in that: A fixing seat is provided on the top of the steel truss body, and rectangular plates are installed at the front and rear ends of the steel truss body. The two rectangular plates are threadedly connected with first bolts. Two thread grooves are provided at the bottom of the fixing seat, and the top ends of the two first bolts are threadedly connected with the corresponding thread grooves respectively. It also includes two clamping support mechanisms installed on the steel truss body, a threaded limit mechanism installed on the fixing seat, and a hoisting fastening mechanism installed on the fixing seat; The clamping support mechanism includes two clamping plates, and the sides of the two clamping plates close to each other are both slidably connected to the steel truss body, and the sides of the two clamping plates close to each other are both installed with support plates, and the tops of the two support plates are both slidably connected to the bottom of the steel truss body; The threaded limiting mechanism includes two movable plates, the bottom ends of the two movable plates are respectively connected to the top ends of the corresponding clamping plates, the two movable plates are threadedly connected with threaded rods, the ends of the two threaded rods close to each other are rotatably connected to one side of the fixed seat, the ends of the two threaded rods away from each other are installed with knobs, the two movable plates are slidably connected with limiting columns, the ends of the two limit columns close to each other are connected to one side of the fixed seat, and the ends of the two limit columns away from each other are installed with limiting disks.

2. The large-span steel truss that is easy to hoist according to claim 1 is characterized in that: The lifting and fastening mechanism includes a lifting ring, the bottom of which is connected to the top of the fixing seat, and second bolts are threadedly connected to both sides of the lifting ring. The ends of the two second bolts that are close to each other extend into the lifting ring and are installed with fixing plates, and the sides of the two fixing plates that are close to each other are installed with fixing teeth, and the two fixing teeth are adapted to each other.

3. The large-span steel truss that is easy to hoist according to claim 2 is characterized in that: The two support plates are both trapezoidal structures.

4. The large-span steel truss that is easy to hoist according to claim 3 is characterized in that: The number of the fixed teeth is several, and the fixed teeth are distributed at equal distances.

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