Integral lifting structure suitable for flat plate net rack

Abstract

The utility model belongs to the technical field of slab net rack lifting construction, and particularly relates to an integral lifting structure suitable for a slab net rack. Comprising a lifting beam; one end of the lifting beam is welded with a pre-embedded plate on the top surface of the concrete foundation, and the other end overhangs and extends out of a flat net rack lifting area; pressing plates are arranged on the top surfaces of the lifting beams, and the parts, extending out of the lifting beams, of the two ends of the pressing plates are connected with concrete foundations; the top of the lifting beam is connected with a tensile support which is connected with the main body structure in an anchoring mode. A vertical through hole is formed in the overhanging end of the lifting beam, a center-penetrating type hydraulic lifter is placed on the top face of the lifting beam, and a steel strand connected with the center-penetrating type hydraulic lifter penetrates through the vertical through hole of the lifting beam and is used for being connected with the flat plate net rack. The utility model provides a lifting structure for the flat net rack, the stress principle of the lifting structure is clear, and the safety of the lifting working condition is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of flat grid frame lifting construction, and particularly relates to a flat grid frame integral lifting structure suitable for the same. Background Technique

[0002] The roofs of large-span industrial buildings and public buildings generally adopt space grid structures, among which flat grid frames are widely used. According to the type of nodes, they can be divided into welded ball node grid frames and bolt ball node grid frames. The flat grid frame is light in weight, small in steel consumption, fast in construction speed, and beautiful in shape. There are many construction methods for flat grid frame structures. The welded ball grid frame adopts the hoisting method. However, when the hoisting machinery cannot be close to the grid frame, it will lead to a large selection of lifting machinery and great safety risks. After the starting span of the bolt ball grid frame is in place, it can be assembled in the air, but the aerial work is dangerous and the construction speed is slow. The integral lifting process of the flat grid frame has strong applicability. The grid frame can be assembled on the ground where the vertical projection of the intended installation position is located, leaving the outermost grid as the filling section, and the hydraulic lifting construction process is adopted to lift the grid frame into place. At present, it is necessary to erect a lifting support. When the lifting height is relatively high, the stability and bearing capacity of the lifting support itself are a great challenge, and there are safety risks. It is necessary to invent a simple lifting structure with good structural stability and convenient installation. Content of the Utility Model

[0003] An object of the utility model is to solve at least the above problems and provide at least the advantages described hereinafter.

[0004] The utility model provides the following technical solution: a flat grid frame integral lifting structure suitable for the same, including a lifting beam; one end of the lifting beam is welded and connected to the embedded plate on the top surface of the concrete foundation, and the other end extends outwards in a cantilever manner towards the flat grid frame lifting area; a pressing plate is arranged on the top surface of the lifting beam, and the parts of both ends of the pressing plate extending out from the lifting beam are connected to the concrete foundation; a tensile support is connected to the top of the lifting beam, and the tensile support is anchored and connected to the main structure; a vertical through hole is opened at the cantilever end of the lifting beam, a through-hole hydraulic lifter is placed on the top surface of the lifting beam, and the steel strand connected to the through-hole hydraulic lifter passes through the vertical through hole of the lifting beam for connecting the flat grid frame.

[0005] Further, the pressing plate is perpendicular to the lifting beam, and the pressing plate and the concrete foundation are connected by anti-pulling anchor bolts. The lower end of the anti-pulling anchor bolt is buried in the concrete foundation and an anchor plate is arranged, and the upper end of the anti-pulling anchor bolt passes through the pressing plate and is connected with double nuts for fastening.

[0006] Further, the tensile support includes an inclined pull rod, a vertical strut and a horizontal pull rod. One end of the inclined pull rod is connected at 1 / 3 of the distance from the cantilever end of the lifting beam, and the other end intersects with the vertical strut and the horizontal pull rod. The vertical strut stands on the top surface of the lifting beam within the range of the embedded plate, and the horizontal pull rod extends away from the lifting beam to be anchored and connected to the main structure.

[0007] Furthermore, the vertical through hole on the lifting beam is a slotted hole open to the cantilevered end of the lifting beam, the slot bottom of the vertical through hole is a round hole, and the slot body is a straight slot.

[0008] Furthermore, the embedded plate is a ball node support embedded plate for fixing the flat grid, and the bottom surface of the lifting beam and the embedded plate are welded around by using fillet welds.

[0009] Further, the lifting beam is a rectangular beam.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] The utility model provides a lifting structure for a flat grid, the force principle of the lifting structure is clear, and the lifting working condition is safe. It replaces the traditional lifting bracket, produces good economic benefits, and ensures the safety of the grid structure during the lifting process. With this lifting structure, the translation of the grid structure in any direction is less than 200mm when it is in place, ensuring that the grid structure is installed accurately.

[0012] At the connection between the lifting beam and the concrete foundation, the welding structure provides tension, and the pressure plate and pull-out anchor rod provide downward pressure, so that the load of the cantilevered end of the lifting beam is transferred to the concrete foundation, and a tensile bracket is set on the top of the lifting beam to connect with the main structure to prevent the lifting beam from deflecting. The lifting structure is simple in construction and the force principle is clear, which ensures the safety of the lifting condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the overall lifting structure applicable to the flat grid;

[0014] Figure 2 It is a top view applicable to the overall lifting structure of the flat grid;

[0015] Figure 3 A three-dimensional diagram of the connection between the lifting beam and the concrete foundation;

[0016] Figure 4 It is a calculation model suitable for the overall lifting structure of the flat grid.

[0017] In the figure: 1-lifting beam; 1.1-vertical through hole; 2-embedded plate; 3-pressure plate; 4-concrete foundation; 5-tensile support; 5.1-diagonal support rod; 5.2-vertical support rod; 5.3-horizontal support rod; 6-through-type hydraulic lifter; 7-steel strand; 8-tension anchor rod; 9-flat grid. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown: a structure suitable for overall lifting of a flat grid, comprising a lifting beam 1; one end of the lifting beam 1 is welded to an embedded plate 2 on the top surface of a concrete foundation, and the other end is cantilevered out to the lifting area of the flat grid; a pressing plate 3 is provided on the top surface of the lifting beam 1, and the parts of the pressing plate 3 extending from the lifting beam 1 at both ends are connected to the concrete foundation; a tensile support 5 is connected to the top of the lifting beam 1, and the tensile support 5 is anchored to the main structure; a vertical through hole 1.1 is opened at the cantilevered end of the lifting beam 1, and a through-type hydraulic lifter 6 is placed on the top surface of the lifting beam 1, and a steel strand 7 connected to the through-type hydraulic lifter 6 passes through the vertical through hole of the lifting beam 1 for connecting to the flat grid.

[0020] Lifting beam 1 is analyzed and calculated according to the weight of the flat grid. When the single-point lifting load is 15t or less, lifting beam 1 adopts B350x350x160 rectangular beam. The length of lifting beam 1 is determined according to the distance from the concrete foundation to the lifting ball node of the flat grid.

[0021] The vertical through hole 1.1 on the lifting beam 1 is a slotted hole open to the cantilevered end of the lifting beam 1. The bottom of the vertical through hole 1.1 is a round hole, and the slot body is a straight slot.

[0022] The embedded plate 2 is a ball node support embedded plate for fixing the flat grid. The bottom surface of the lifting beam 1 and the embedded plate 2 are welded around with a fillet weld to play an anti-pullout role.

[0023] The pressure plate 3 is perpendicular to the lifting beam 1, and the pressure plate 3 is connected to the concrete foundation through the pull-out anchor rod 8. The lower end of the pull-out anchor rod 8 is buried in the concrete foundation and an anchor plate is set. The pull-out anchor rod 8 penetrates 240mm into the concrete foundation. The upper end of the pull-out anchor rod 8 passes through the pressure plate 3 and is connected with a double nut for fastening, which plays a role of safety reserve.

[0024] The tensile support 5 includes an inclined tie rod 5.1, a vertical strut 5.2 and a horizontal tie rod 5.3. One end of the inclined tie rod 5.1 is connected to the 1 / 3 of the cantilever end of the lifting beam 1, and the other end intersects with the vertical strut 5.2 and the horizontal tie rod 5.3. The vertical strut 5.2 stands on the top surface of the lifting beam 1 within the range of the embedded plate 2, and the horizontal tie rod 5.3 extends away from the lifting beam 1 to be anchored and connected to the main structure. The inclined tie rod 5.1, the vertical strut 5.2 and the horizontal tie rod 5.3 are all made of D60x5 round steel pipes, and all are connected by fillet welding between the steel pipes and at the joints between the steel pipes and the lifting beam.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An overall lifting structure applicable to flat grid structures, characterized in that: It includes a lifting beam (1); one end of the lifting beam (1) is welded to the embedded plate (2) on the top surface of the concrete foundation, and the other end extends cantileveredly towards the lifting area of the flat grid; a pressing plate (3) is arranged on the top surface of the lifting beam (1), and the parts of both ends of the pressing plate (3) extending from the lifting beam (1) are connected to the concrete foundation; A tensile support (5) is connected to the top of the lifting beam (1), and the tensile support (5) is anchored to the main structure; a vertical through hole (1.1) is opened at the cantilever end of the lifting beam (1), a through-hole hydraulic lifter (6) is placed on the top surface of the lifting beam (1), and the steel strand (7) connected to the through-hole hydraulic lifter (6) passes through the vertical through hole of the lifting beam (1) for connecting the flat grid.

2. The overall lifting structure applicable to a flat grid described in claim 1 is characterized in that: The pressing plate (3) is perpendicular to the lifting beam (1), and the pressing plate (3) is connected to the concrete foundation through a pull-out anchor rod (8). The lower end of the pull-out anchor rod (8) is buried in the concrete foundation and an anchor plate is provided. The upper end of the pull-out anchor rod (8) passes through the pressing plate (3) and is connected with double nuts for fastening.

3. The integral lifting structure applicable to flat grid frames according to claim 2, wherein: The tensile support (5) includes an inclined tie rod (5.1), a vertical strut (5.2) and a horizontal tie rod (5.3). One end of the inclined tie rod (5.1) is connected at 1 / 3 of the cantilever end of the lifting beam (1), and the other end intersects with the vertical strut (5.2) and the horizontal tie rod (5.3). The vertical strut (5.2) stands on the top surface of the lifting beam (1) within the range of the embedded plate (2), and the horizontal tie rod (5.3) extends away from the lifting beam (1) to be anchored to the main structure.

4. The overall lifting structure applicable to a flat grid frame according to claim 3, characterized in that: The vertical through hole (1.1) on the lifting beam (1) is an open slot hole towards the cantilever end of the lifting beam (1). The bottom of the vertical through hole (1.1) is a round hole, and the slot body is a straight slot.

5. A kind of integral lifting structure applicable to flat grid, according to any one of claims 1 to 4, characterized in that: The embedded plate (2) is an embedded plate for fixing the spherical joint support of the flat grid, and the bottom surface of the lifting beam (1) and the embedded plate (2) are fillet welded around.

6. The overall lifting structure applicable to flat grid frames according to claim 1, wherein: The lifting beam (1) is a rectangular beam.

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