Steel structure net rack mounting and lifting device

Abstract

A steel structure net rack installing and lifting device comprises a net rack structure column and a net rack and is characterized in that a temporary supporting frame is vertically fixed to the ground on the outer side of the net rack structure column, the upper end of the temporary supporting frame is higher than the upper end of the net rack structure column, and a heightening support convenient to disassemble is fixed to one side of the upper end of the net rack structure column; a lifting platform is installed between the temporary supporting frame and the heightening support, a lifting device is installed between the lifting platform and the net rack, and the lifting connecting end of the lifting device is connected with the multi-head fixing piece. And the lifting platform and the lifting device are mounted between the temporary supporting frame and the grid structure column, so that the spliced and welded whole grid is hoisted, the high-altitude welding workload is reduced, construction is safer, large-area erection of ground scaffolds can be reduced, and the mounting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to a net rack installation lifting device, in particular to a steel structure net rack installation lifting device, and belongs to the technical field of building construction. BACKGROUND

[0002] During the construction of a large steel structure building roof, the roof net rack area is very large, and the traditional construction method needs to erect a large number of steel pipe temporary supports on the ground layer, and at the same time, multiple crane machines are used to hoist the net rack steel structure rod piece assembled into a whole net rack to the steel pipe temporary support, and then the whole roof net rack is assembled and welded and fixed, which not only has a large construction difficulty, but also needs a high coordination between the crane driver and the welding and assembling workers, and the welding and assembling workers need to spend a large amount of time in the high altitude welding and assembling, and there is a large construction risk, and the construction efficiency is not high. Therefore, a device and process convenient for large net rack installation are needed to solve the technical problem of the large installation difficulty of the existing roof net rack, so that the installation of the roof net rack is more convenient, the construction efficiency is higher, and the construction is safer. SUMMARY

[0003] The application aims at the defects and deficiencies that the traditional construction method needs to erect a large number of steel pipe temporary supports on the ground layer during the installation of the existing roof net rack, and at the same time, multiple crane machines are used for hoisting, and then the whole roof net rack is assembled and welded and fixed under the support of the steel pipe temporary support, the construction difficulty is large, the welding and assembling time in the high altitude is long, there is a large construction risk, and the construction efficiency is not high, and the present application provides a steel structure net rack installation lifting device which is reasonable in structure, small in high-altitude welding operation amount, safe in construction, can reduce the large-area erection of ground scaffolds, can reduce the use of automobile hoists, and is higher in installation efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution of the application is: a steel structure net rack installation lifting device, comprising a net rack structure column and a net rack, and a ball joint support connected with the net rack structure column is fixedly arranged on the net rack, characterized in that: a temporary support frame is vertically fixed on the ground outside the net rack structure column, the upper end height of the temporary support frame is higher than the height of the net rack fixed part at the upper end of the net rack structure column, a detachable heightening support is fixed on one side of the upper end of the net rack structure column, a lifting platform is installed between the temporary support frame and the heightening support, a lifting device is installed between the lifting platform and the net rack, the lifting connection end of the lifting device is connected with a multi-head fixing piece, and the multi-head fixing piece is connected with different parts of the net rack or the ball joint support through a plurality of net rack connecting steel strands.

[0005] Further, the net rack is assembled and fixed or positionally welded and fixed on the ground by a plurality of net rack sections, and each net rack section is welded by a plurality of steel structure rod pieces.

[0006] Furthermore, the lifting device includes an electric hoist and a lifting steel cable. The electric hoist is installed on the lifting platform. One end of the lifting steel cable is connected to the electric hoist winch, and the other end of the lifting steel cable is fixed on a multi-head fixing member or the other end of the lifting steel cable is directly connected to the grid or ball node support.

[0007] Furthermore, the lifting device includes a hydraulic winch, a fixed pulley and a lifting steel cable, the fixed pulley is fixed to the bottom of the lifting platform, the hydraulic winch is fixed to the ground or other fixed objects, one end of the lifting steel cable is fixed to the hydraulic winch, and the other end of the lifting steel cable passes through the fixed pulley and is fixed to a multi-head fixing part or is directly connected to the grid or ball node support.

[0008] Furthermore, one or more intermediate temporary support columns are vertically fixed on the outer side of the ground in the middle of the grid installation position, and a central lifting device is installed on the upper end of the intermediate temporary support column, which is connected to the outer grid through a steel cable.

[0009] Furthermore, the multi-head fixing member is a metal connecting member with multiple connecting rings or connecting holes.

[0010] The beneficial effects of this application are:

[0011] 1. This application completes the roof grid by assembling and welding the entire roof grid on the ground, and vertically fixes temporary support frames on the ground outside the grid structure columns. A lifting platform and a lifting device are installed between the temporary support frames and the grid structure columns, so that the assembled and welded overall grid can be hoisted, reducing the amount of high-altitude welding work, making construction safer, reducing the need to erect large-scale ground scaffolding, and reducing the use of car cranes, thereby improving installation efficiency.

[0012] 2. The structure of this application is reasonable. One or more intermediate temporary support columns are vertically fixed on the ground in the middle of the grid. A middle lifting device is installed on the intermediate temporary support column. The middle lifting device lifts the middle part of the grid. By adding a lifting device to the middle position of the grid, the middle force point of the grid when it is lifted upward is increased, making the installation and lifting of the grid more reliable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of Example 1 of the present application.

[0014] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present application after the grid is hoisted and raised.

[0015] Figure 3 It is a structural diagram of Example 2 of the present application.

[0016] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present application after the grid is hoisted and raised.

[0017] Figure 5 is Figure 1 Enlarged structural diagram of multi-head fixing part in middle part.

[0018] In the figure: truss structure column 1, truss 2, truss segment 3, spherical node support 4, temporary support frame 5, middle temporary support column 6, heightening support 7, lifting platform 8, electric hoist 9, lifting steel cable 10, multi-head fixing part 11, truss connecting steel strand 12, hydraulic winch 13, fixed pulley 14, middle lifting device 15. DETAILED DESCRIPTION

[0019] The application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Referring to Figures 1 to 5 , the steel structure truss installation lifting device of the application comprises a truss structure column 1 and a truss 2, and the truss 2 is fixedly provided with a spherical node support 4 connected with the truss structure column 1, characterized in that: a temporary support frame 5 is vertically fixed on the ground outside the truss structure column 1, the upper end of the temporary support frame 5 is higher than the height of the upper end truss fixed part of the truss structure column 1, a heightening support 7 is fixed on one side of the upper end of the truss structure column 1, the temporary support frame 5 and the heightening support 7 are provided with a lifting platform 8, a lifting device is installed between the lifting platform 8 and the truss 2, the lifting device is connected with a multi-head fixing part 11 through a lifting connecting end, and the multi-head fixing part 11 is connected with different parts of the truss 2 or the spherical node support 4 through a plurality of truss connecting steel strands 12.

[0021] The truss 2 is assembled and fixed on the ground or fixed by position welding through a plurality of truss segments 3, and each truss segment 3 is welded by a plurality of steel structure rods.

[0022] The lifting device comprises an electric hoist 9 and a lifting steel cable 10, the electric hoist 9 is installed on the lifting platform 8, one end of the lifting steel cable 10 is connected with the electric hoist winch, and the other end of the lifting steel cable 10 is fixed on the multi-head fixing part 11 or directly connected with the truss 2 or the spherical node support 4.

[0023] The lifting device comprises a hydraulic winch 13, a fixed pulley 14 and a lifting steel cable 10, 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 is fixed on the multi-head fixing part 11 after passing through the fixed pulley 14 or directly connected with the truss 2 or the spherical node support 4.

[0024] One or more intermediate temporary support columns 6 are vertically fixed on the outer side of the ground in the middle of the installation position of the grid 2. A central lifting device 15 is installed on the upper end of the intermediate temporary support column 6, and the central lifting device 15 is connected to the outer grid 2 through a steel cable.

[0025] The multi-head fixing member 11 is a metal connecting member with multiple connecting rings or connecting holes.

[0026] This application completes the assembly and welding of the roof grid on the ground, and vertically fixes temporary support frames on the ground outside the grid structure columns at both ends of the grid. A lifting platform is installed between the upper end of the temporary support frame and the upper end of the grid structure column. A lifting device is installed on the lifting platform. The lifting devices at both ends of the grid hoist the assembled and welded grid into place, reducing the amount of high-altitude welding work. The installation and fixation are carried out by hoisting the whole grid, thereby reducing the need for large-scale ground scaffolding while fully utilizing the grid structure columns, reducing the use of mobile cranes, and improving installation efficiency. The specific structure of this application is described as follows:

[0027] The grid structure columns 1 supporting the left and right ends of the grid 2 are respectively fixed on the ground, and multiple grid segments 3 welded from multiple steel structure rods are welded and assembled on the ground to form an integral grid 2. Ball node supports 4 are respectively installed at both ends of the grid 2. The ball node supports 4 are used to install the two ends of the grid 2 on the upper ends of the grid structure columns 1 on the corresponding sides, and at the same time place the grid 2 between the grid structure columns 1 on the left and right sides.

[0028] A temporary support frame 5 is fixed vertically on the ground outside the grid structure column 1. The upper end height of the temporary support frame 5 is higher than the height of the grid frame fixing part at the upper end of the grid structure column 1. The temporary support frames 5 on the left and right sides are not on the same straight line as the grid structure columns 1 on the left and right sides. A height-raising support 7 for easy disassembly is fixed to one side of the upper end of the grid structure column 1, and a lifting platform 8 is installed between the temporary support frame 5 and the height-raising support 7. The purpose of fixing the height-raising support 7 for easy disassembly on the upper end of the grid structure column 1 is to make the height of the lifting platform 8 higher than the height of the grid structure column 1. When the grid 2 is hoisted as a whole, the grid 2 has a certain thickness of upper and lower heights, so the height of the grid 2 needs to be higher than the height of the grid structure column 1.

[0029] The lifting platform 8 is equipped with a lifting device for lifting the grid 2. The lifting connection end of the lifting device is equipped with a multi-head fixing member 11. The multi-head fixing member 11 can be a metal connector with multiple connecting rings or connecting holes. Each connecting ring or connecting hole is connected to a grid connecting steel strand 12. The other end of each grid connecting steel strand 12 is connected to a different part of the grid 2 or the ball node support 4. In this way, the grid 2 has multiple force points when it is lifted. On the one hand, more connection points will make it safer and less likely to fall off. On the other hand, the grid 2 will be more stable during the process of being hoisted as a whole. Because the temporary support frames 5 on the left and right sides are not in the same straight line with the grid structure columns 1 on the left and right sides, when the grid 2 is hoisted as a whole, the grid 2 will be located outside between the two grid structure columns 1. When the grid 2 is hoisted to the specified height, external force can be used to push the grid 2 to the top of the two grid structure columns 1, and the grid 2 will be placed and installed on the top of the two grid structure columns 1. The lifting device can adopt various structural forms, mainly the following two structural forms:

[0030] Embodiment 1: The lifting device includes an electric hoist 9 and a lifting cable 10. The electric hoist 9 is installed on the lifting platform 8. One end of the lifting cable 10 is connected to the winch of the electric hoist 9. The other end of the lifting cable 10 is installed with a multi-head fixing part 11. When the electric hoist 9 is started, the grid 2 can be lifted upward.

[0031] Embodiment 2: The lifting device includes a hydraulic winch 13, a fixed pulley 14 and a lifting steel cable 10. The fixed pulley 14 is fixed to the bottom of the lifting platform 8, the hydraulic winch 13 is fixed to the ground outside the temporary support frame 5 or fixed to the temporary support frame 5, one end of the lifting steel cable 10 is fixed to the hydraulic winch 13, and the other end of the lifting steel cable 10 is passed through the fixed pulley 14 and then installed with a multi-head fixing part 11. When the hydraulic winch 13 is started, the grid 2 can be lifted upward.

[0032] In addition, in order to make the grid 2 safer and more stable during the hoisting process, the present application vertically fixes one or more intermediate temporary support columns 6 on the outer side of the ground in the middle of the grid 2 installation position. The intermediate temporary support columns 6 can be set in a straight line with the temporary support frames 5 on both sides, and the height of the intermediate temporary support columns 6 is the same as the height of the temporary support frames 5. The upper end of the intermediate temporary support column 6 is installed with a central lifting device 15, which is connected to the middle of the outer grid 2 by a steel cable. The central lifting device 15 can be an electric hoist. By adding a lifting device to the middle position of the grid 2, the central force point of the grid 2 is increased, making the installation and lifting of the grid more reliable and safe.

[0033] The above content is a further detailed description of the present application in combination with the specific implementation methods. It cannot be considered that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, the present application will also have various simple replacements, improvements and changes without departing from the concept of the present application. Various simple replacements, improvements and changes made should be deemed to fall within the scope of protection of the present application.

Claims

1. A steel structure grid installation and lifting device, comprising a grid structure column (1) and a grid (2), wherein a ball node support (4) is fixedly provided on the grid (2) and is connected to the grid structure column (1), and is characterized in that: A temporary support frame (5) is vertically fixed on the ground outside the grid structure column (1), the upper end height of the temporary support frame (5) is higher than the height of the grid frame fixing part at the upper end of the grid structure column (1), and a height-increasing support (7) that is easy to disassemble is fixed on one side of the upper end of the grid structure column (1). A lifting platform (8) is installed between the temporary support frame (5) and the height-increasing support (7), and a lifting device is installed between the lifting platform (8) and the grid (2). The lifting connection end of the lifting device is connected to a multi-head fixing member (11), and the multi-head fixing member (11) is connected to different parts of the grid (2) or the ball node support (4) through multiple grid connection steel strands (12).

2. A steel structure grid installation and lifting device according to claim 1, characterized in that: The grid (2) is composed of a plurality of grid segments (3) that are assembled and fixed on the ground or fixed by position welding, and each grid segment (3) is welded from a plurality of steel structure rods.

3. The steel structure grid installation and lifting device according to claim 1, characterized in that: The lifting device comprises an electric hoist (9) and a lifting steel cable (10), wherein the electric hoist (9) is installed on the lifting platform (8), one end of the lifting steel cable (10) is connected to the electric hoist winch, and the other end of the lifting steel cable (10) is fixed to a multi-head fixing member (11) or the other end of the lifting steel cable (10) is directly connected to the grid (2) or the ball node support (4).

4. The steel structure grid installation and lifting device according to claim 2, characterized in that: 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 to the bottom of the lifting platform (8), the hydraulic winch (13) is fixed to the ground or other fixed objects, one end of the lifting steel cable (10) is fixed to the hydraulic winch (13), and the other end of the lifting steel cable (10) passes through the fixed pulley (14) and is fixed to a multi-head fixing member (11) or is directly connected to the grid (2) or the ball node support (4).

5. The steel structure grid installation and lifting device according to claim 1, characterized in that: One or more intermediate temporary support columns (6) are vertically fixedly arranged on the outer side of the ground in the middle of the installation position of the grid (2), and a middle lifting device (15) is installed on the upper end of the intermediate temporary support column (6). The middle lifting device (15) is connected to the outer grid (2) through a steel cable.

6. The steel structure grid installation and lifting device according to claim 1, characterized in that: The multi-head fixing member (11) is a metal connecting member with multiple connecting rings or connecting holes.

Images