Steel construction rack installation hoisting device
Technical Field
The application relates to a grid installation lifting device, in particular to a steel structure grid installation lifting device, and belongs to the technical field of building construction.
Background
In the construction process of the large-scale steel structure building ceiling, the area of the roof grid frame can be very large, a large number of steel pipe temporary supports are required to be erected on the ground layer by the traditional construction method, grid frame steel structure rods spliced into an integral grid frame are hoisted on the steel pipe temporary supports by means of a plurality of crane machines, then the integral roof grid frame is assembled and welded into the whole roof grid frame, so that the construction difficulty is high, the coordination of the height between a crane driver and welding assembly workers is kept, a large amount of time is consumed for welding assembly in the high air by the welding assembly workers, larger construction risks exist, and the construction efficiency is low. Therefore, a device and a process for facilitating installation of a large-scale net rack are needed to solve the technical problem that the installation difficulty of the existing roof net rack is high, the installation of the roof net rack is more convenient, the construction efficiency is higher, and the construction is safer.
Disclosure of Invention
The application aims at solving the defects and shortcomings of the prior roofing net frame that the traditional construction method needs to erect a large number of steel pipe temporary supports on a ground layer, and meanwhile, the steel pipe temporary supports are used for hoisting, then the steel pipe temporary supports are used for assembling, welding and fixing the steel pipe temporary supports to form the whole roofing net frame, the construction difficulty is high, the duration of welding and assembling work in high air is long, the construction risk is high, and the construction efficiency is low.
The technical scheme is that the steel structure net rack installation lifting device comprises net rack structure columns and net racks, wherein ball node supports which are matched and connected with the net rack structure columns are fixedly arranged on the net racks, the steel structure net rack installation lifting device is characterized in that temporary support frames are vertically fixed on the ground outside the net rack structure columns, the upper ends of the temporary support frames are higher than the fixing positions of the net racks at the upper ends of the net rack structure columns, heightening supports which are convenient to detach are fixed on one side of the upper ends of the net rack structure columns, lifting platforms are arranged between the temporary support frames and the heightening supports, lifting devices are arranged between the lifting platforms and the net racks, lifting connecting ends of the lifting devices are connected with multi-head fixing pieces, and the multi-head fixing pieces are connected with different positions of the net racks or the ball node supports through a plurality of net rack connecting steel strands.
Further, the net frame is assembled and fixed or aligned and welded and fixed on the ground by a plurality of net frame sections, and each net frame section is formed by welding a plurality of steel structure rods.
Further, the lifting device comprises an electric hoist and a lifting steel cable, the electric hoist is arranged on the lifting platform, one end of the lifting steel cable is connected with the electric hoist winch, the other end of the lifting steel cable is fixed on the multi-head fixing piece or the other end of the lifting steel cable is directly connected with the net rack or the ball joint support.
Further, the lifting device comprises a hydraulic winch, a fixed pulley and a lifting steel cable, wherein the fixed pulley is fixed at the bottom of the lifting platform, the hydraulic winch is fixed on the ground or other fixed objects, one end of the lifting steel cable is fixed on the hydraulic winch, and the other end of the lifting steel cable passes through the fixed pulley and is fixed on a multi-head fixed piece or is directly connected with the net rack or the ball joint support.
Further, the outside vertical fixation on rack mounted position middle part ground is provided with one or more middle temporary support column, and middle hoisting device is installed to middle temporary support column's upper end, and middle hoisting device is connected with the rack in the outside through the steel cable.
Further, the multi-head fixing piece is a metal connecting piece with a plurality of connecting rings or connecting holes.
The beneficial effects of the application are as follows:
1. According to the application, the roof net frame is assembled and welded on the ground, the temporary support frames are respectively and vertically fixed on the ground outside the net frame structure columns, and the lifting platform and the lifting device are arranged between the temporary support frames and the net frame structure columns, so that the assembled and welded integral net frame is hoisted, the overhead welding workload is reduced, the construction is safer, the ground scaffold is erected in a large area, the use of an automobile crane is reduced, and the installation efficiency is improved.
2. The application has reasonable structure, vertically fixes one or more middle temporary support columns on the ground in the middle of the net rack, installs a middle lifting device on the middle temporary support columns, lifts the middle of the net rack by the middle lifting device, and increases the middle stress point of the upward lifting of the net rack by adding the lifting device for the middle position of the net rack, thereby ensuring that the installation and the lifting of the net rack are more reliable and safer.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present application.
Fig. 2 is a schematic view of a structure of a grid frame lifted according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a second embodiment of the present application.
Fig. 4 is a schematic structural view of the two net racks according to the embodiment of the present application after being lifted.
Fig. 5 is an enlarged schematic view of the multi-headed fastener of fig. 1.
In the figure, a grid structure column 1, a grid 2, a grid segment 3, a ball joint support 4, a temporary support frame 5, a middle temporary support column 6, a heightening support 7, a lifting platform 8, an electric hoist 9, a lifting steel cable 10, a multi-head fixing piece 11, a grid connecting steel strand 12, a hydraulic winch 13, a fixed pulley 14 and a middle lifting device 15.
Detailed Description
The application is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 5, the steel structure grid installation lifting device comprises a grid structure column 1 and a grid 2, wherein a ball joint support 4 which is matched and connected with the grid structure column 1 is fixedly arranged on the grid 2, the steel structure grid installation lifting device is characterized in that a temporary support frame 5 is vertically fixed on the ground outside the grid structure column 1, the upper end of the temporary support frame 5 is higher than the grid fixing position at the upper end of the grid structure column 1, a lifting support 7 which is convenient to detach is fixed on one side of the upper end of the grid structure column 1, a lifting platform 8 is arranged between the temporary support frame 5 and the lifting support 7, a lifting device is arranged between the lifting platform 8 and the grid 2, the lifting connecting end of the lifting device is connected with a multi-head fixing piece 11, and the multi-head fixing piece 11 is connected with different positions of the grid 2 or the ball joint support 4 through a plurality of grid connection steel strands 12.
The net rack 2 is formed by assembling and fixing or aligning and welding and fixing a plurality of net rack segments 3 on the ground, and each net rack segment 3 is formed by welding a plurality of steel structure rods.
The lifting device comprises an electric hoist 9 and a lifting steel cable 10, wherein the electric hoist 9 is arranged on the lifting platform 8, one end of the lifting steel cable 10 is connected with an electric hoist winch, the other end of the lifting steel cable 10 is fixed on a multi-head fixing piece 11 or the other end of the lifting steel cable 10 is directly connected with the net rack 2 or the ball joint support 4.
The lifting device comprises a hydraulic winch 13, a fixed pulley 14 and a lifting steel cable 10, wherein the fixed pulley 14 is fixed at the bottom of the lifting platform 8, the hydraulic winch 13 is fixed on the ground or other fixed objects, one end of the lifting steel cable 10 is fixed on the hydraulic winch 13, and the other end of the lifting steel cable 10 passes through the fixed pulley 14 and is fixed on the multi-head fixed piece 11 or is directly connected with the net rack 2 or the ball joint support 4.
The outside vertical fixation on rack 2 mounted position middle part ground is provided with one or more middle temporary support column 6, and middle hoisting device 15 is installed to middle temporary support column 6's upper end, and middle hoisting device 15 is connected with rack 2 in the outside through the steel cable.
The multi-head fixing member 11 is a metal connecting member with a plurality of connecting rings or connecting holes.
The application assembles and welds the roof net frame on the ground completely, and vertically fixes the temporary support frames on the outer sides of the net frame structure columns at the two ends of the support net frame respectively, a lifting platform is arranged between the upper ends of the temporary support frames and the upper ends of the net frame structure columns, a lifting device is arranged on the lifting platform, the lifting devices at the two ends of the net frame hoist the assembled and welded integral net frame, the overhead welding workload is reduced, and the integral hoisting mode is used for installing and fixing, thereby fully utilizing the net frame structure columns while the large-area building of the ground scaffold is reduced, reducing the use of automobile cranes and improving the installation efficiency. The specific structure of the application is described as follows:
the grid structure columns 1 supporting the left and right ends of the grid frame 2 are respectively fixed on the ground, a plurality of grid frame sections 3 formed by welding a plurality of steel structure rods are welded and spliced into an integral grid frame 2 on the ground, the two ends of the grid frame 2 are respectively provided with a ball joint support 4, the ball joint support 4 is used for installing the two ends of the grid frame 2 at the upper ends of the grid structure columns 1 on the corresponding sides, and meanwhile, the grid frame 2 is placed between the grid structure columns 1 on the left and right sides.
The outside of the grid structure column 1 is vertically fixed with a temporary support frame 5, the upper end of the temporary support frame 5 is higher than the height of the grid fixing part at the upper end of the grid structure column 1, and the temporary support frames 5 at the left side and the right side are not on the same straight line with the grid structure column 1 at the left side and the right side. The upper end one side of grid structure post 1 is fixed with the height increasing support 7 of convenient to detach, installs lifting platform 8 between temporary support frame 5 and the height increasing support 7. The lifting support 7 fixed at the upper end of the grid structure column 1 for convenient disassembly has the effect that the lifting platform 8 is higher than the grid structure column 1, and when the grid 2 is integrally lifted, the grid 2 has a certain thickness of upper and lower heights, so that the height of the grid 2 needs to be higher than the height of the grid structure column 1.
Install the hoisting device who lifts up rack 2 on the lifting platform 8, hoisting device's promotion link installs bull mounting 11, bull mounting 11 can adopt the metal connecting piece that has a plurality of go-between or connecting hole, every go-between or connecting hole are connected with rack connection steel strand wires 12 respectively, the other end of every rack connection steel strand wires 12 is connected with rack 2 or the different positions of ball joint support 4, rack 2 is lifted up the stress point has a plurality ofly like this, the tie point is more on the one hand, can be safer, be difficult for droing, on the other hand, rack 2 by the in-process of whole lifting up can be more steady. Because the temporary support frames 5 on the left side and the right side are not on the same straight line with the grid structure columns 1 on the left side and the right side, the grid 2 is positioned on the outer side between the two grid structure columns 1 in the whole lifting process, and when the grid 2 is lifted to a specified height, the grid 2 can be pushed to the position right above the upper ends of the two grid structure columns 1 by using external force, and meanwhile, the grid 2 is placed and installed at the upper ends of the two grid structure columns 1. The lifting device can adopt various structural forms, and mainly comprises the following two structural forms:
The first embodiment is that the lifting device comprises an electric hoist 9 and a lifting steel cable 10, the electric hoist 9 is arranged on the lifting platform 8, one end of the lifting steel cable 10 is connected with a winch of the electric hoist 9, the other end of the lifting steel cable 10 is provided with a multi-head fixing piece 11, and the electric hoist 9 is started to lift the net rack 2 upwards.
In the second embodiment, the lifting device comprises a hydraulic winch 13, a fixed pulley 14 and a lifting steel cable 10, wherein the fixed pulley 14 is fixed at the bottom of the lifting platform 8, the hydraulic winch 13 is fixed on the ground outside the temporary supporting frame 5 or on the temporary supporting frame 5, one end of the lifting steel cable 10 is fixed on the hydraulic winch 13, the other end of the lifting steel cable 10 passes through the fixed pulley 14 and then is provided with a multi-head fixing piece 11, and the hydraulic winch 13 is started to lift the net rack 2 upwards.
In addition, in order to ensure that the net rack 2 is safer and more stable in the hoisting process, one or more middle temporary support columns 6 are vertically fixed on the outer side of the ground in the middle of the installation position of the net rack 2, and the middle temporary support columns 6 and the temporary support frames 5 on two sides can be arranged on the same straight line, and the height of the middle temporary support columns 6 is the same as that of the temporary support frames 5. Middle hoisting device 15 is installed to middle temporary support column 6's upper end, and middle hoisting device 15 is connected through the middle part of the rack 2 in steel cable and outside, and electric block can be adopted to middle hoisting device 15, through the hoisting device to rack 2 middle part position increase lift to the middle part stress point that has increased rack 2 and upwards lifted, lets the rack installation promote more reliable safety.
The foregoing is a further detailed description of the present application in connection with the specific embodiments, and it is not intended to limit the practice of the application to such descriptions, but rather it is intended to cover all such alternatives, modifications, and variations as may be included within the spirit and scope of the application.