An ultra-high and super-long cantilever steel truss hoisting hoist

Abstract

The utility model discloses a kind of super-high super-long overhanging steel truss hoisting spreader, including super-high super-long overhanging steel truss, still including arc plate being arranged in the bottom of super-high super-long overhanging steel truss top, lug being fixedly connected in the both sides of arc plate, and spreader reinforced plate being arranged between arc plate and lug. The utility model effectively avoids the damage caused by welding lug to original structure, and when loose hook, spreader is automatically separated from upper chord, worker does not need to reach lifting point position to unhook, can realize automatic unhooking, and installing this spreader on arched upper chord is also very simple, just in the determined lifting point position, arc plate is pasted with upper chord, and c type mouth on arc plate is clamped in upper chord stiffened plate, so it can be reused, and the cutting, polishing, rust removal and painting process of later lug is saved. At the same time, this method also reduces the safety measures specially set for unhooking, further improves construction efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a hoisting tool for ultra-high and ultra-long cantilevered steel trusses. Background Technology

[0002] With social development, especially the continuous progress of science and technology, the development of social productivity has been greatly promoted, particularly in the form of super high-rise and super long buildings and building components.

[0003] Ultra-high and ultra-long trusses refer to large-scale spatial truss structures with spans exceeding 50 meters, significant heights (usually ≥5 meters), and extremely heavy weights (up to hundreds of tons). They are commonly found in large-span buildings such as stadiums and convention centers. Their hoisting is characterized by their massive size, complex stress distribution, and high-risk high-altitude operations.

[0004] When hoisting existing ultra-high and ultra-long trusses, after welding lifting lugs onto the arched upper chord, the workload of removing the lifting lugs at high altitude, grinding, removing rust, and painting is large, and special safety measures need to be set up for hook removal, which poses a significant safety risk.

[0005] A tilted cantilever truss installation structure and tooling are disclosed in Chinese patent document CN215946479U. This tilted cantilever truss installation structure and tooling includes a tilted cantilever truss body, which includes a first horizontal chord. The first horizontal chord is sequentially provided with a first lifting lug, a second lifting lug, and a third lifting lug. The first and second lifting lugs are respectively located on opposite sides of the vertical line of the center of gravity of the tilted cantilever truss body, and the first and second lifting lugs are located on the same side of the third lifting lug. The first, second, and third lifting lugs are used to tilt the tilted cantilever truss body at a preset angle after hoisting. While this solution allows for rapid installation of the tilted cantilever truss, the installation structure and tooling require manual removal of the lifting lugs at height, posing a significant safety risk.

[0006] To address the shortcomings of the existing technology, providing a hoisting tool for ultra-high and ultra-long cantilevered steel trusses is a problem worthy of research. Utility Model Content

[0007] The purpose of this utility model is to overcome the high safety risks of dismantling lifting lugs at high altitudes and to provide a lifting tool for ultra-high and ultra-long cantilevered steel trusses, which achieves the technical effect of convenient lifting and automatic hook detachment.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A lifting device for ultra-high and ultra-long cantilevered steel trusses includes an ultra-high and ultra-long cantilevered steel truss, an arc plate located below the top of the truss, lifting lugs fixedly connected to both sides of the arc plate, and a lifting device stiffening plate located between the arc plate and the lifting lugs. This lifting device has a simple structure, is easy to manufacture, is safe to lift, easy to install and dismantle, and can be reused. It does not require special safety measures for hook removal and eliminates the need for subsequent processes such as cutting, grinding, rust removal, and painting of the lifting lugs, thus improving construction efficiency and safety.

[0010] A C-shaped groove is provided on one side of the arc plate. An externally protruding stiffening plate is fixedly connected to one side of the bottom of the lifting point of the ultra-high and ultra-long cantilever steel truss. The C-shaped groove is adapted to the position and shape of the externally protruding stiffening plate. By setting a C-shaped groove on the lifting device that is adapted to the externally protruding stiffening plate, the C-shaped groove of the lifting device is locked at the externally protruding stiffening plate of the upper chord during lifting, which makes it easier to prevent the lifting device from sliding.

[0011] The lifting lugs are welded to both sides of the arc plate, and the lugs and arc plate are welded with full penetration. The angle between the lifting lugs and the arc plate is determined according to the angle of the connected wire rope during the lifting simulation. The C-shaped opening on the arc plate is simply engaged with the stiffening plate of the upper chord. This lifting tool is reusable, eliminating the need for subsequent processes such as cutting, grinding, rust removal, and painting of the lifting lugs. Furthermore, this method reduces the need for specialized safety measures for unhooking, further improving construction efficiency and safety.

[0012] The stiffening plate of the lifting device is welded to the lifting lugs and the arc plate on both sides respectively. The wire rope uses one of the lifting lugs to lift the lifting device to a position a few centimeters from the lifting point of the upper chord. The worker rides a boom lifter to raise the lifting device and connects the other lifting lug to the wire rope through a shackle. The crane swings its boom to align the C-shaped opening of the lifting device with the outer stiffening plate. The crane hook lifts the hook to press the arc plate of the lifting device tightly against the upper chord, and the entire lifting device installation is completed.

[0013] The inner shape of the arc plate is adapted to the shape of the bottom of the lifting point of the ultra-high and ultra-long cantilever steel truss. The radius of the arc plate is the sum of the radius of the circular tube component being lifted and half the thickness of the arc plate. This lifting device is suitable for ultra-high and ultra-long cantilever steel trusses with circular tube members and arched components. It also features an externally protruding stiffening plate at the lifting point to prevent slippage. First, the force of the wire rope at the lifting point is calculated and simulated according to the lifting point location. Then, the thickness of the arc plate in the lifting device is determined using finite element analysis. In the modeling software, the arc plate 2, lifting lug 3, and lifting device stiffening plate are constructed according to the attached diagram. 4. After the components are drawn and processed, during the truss hoisting, the main crane wire rope is used to lift the lifting device to the position of the arched upper chord. The worker clamps the C-shaped opening of the lifting device onto the stiffening plate of the upper chord. The crane hook lifts the lifting device and presses the arc plate of the lifting device against the tube wall of the upper chord. After the lifting device is installed, the truss hoisting begins after the wire rope is connected to the other end of the truss. After the truss is in place, the lifting device automatically disengages from the upper chord when the wire rope descends. The lifting device is pulled to the platform using the traction rope. The worker unfastens the shackle of one of the lifting lugs of the lifting device, and the main crane lifts the lifting device to the ground, thus completing the truss hoisting.

[0014] Positive and beneficial effects:

[0015] 1. The lifting device for ultra-high and ultra-long cantilever steel trusses is simple in structure, easy to manufacture, safe to lift, easy to install and dismantle, and can be reused. It does not require special safety measures for unhooking and also saves the later processes of cutting, grinding, rust removal and painting of the lifting lugs, thus improving construction efficiency and safety.

[0016] 2. This lifting device for ultra-high and ultra-long cantilevered steel trusses effectively avoids damage to the original structure caused by welding lifting lugs. Furthermore, the device automatically detaches from the upper chord during hook release, eliminating the need for workers to manually detach it at the lifting point. Installing this device on the arched upper chord is also very simple; just align the curved plate with the upper chord at the determined lifting point, ensuring the C-shaped opening on the curved plate engages with the stiffening plate of the upper chord. This device is reusable, eliminating the need for subsequent processes such as cutting, grinding, rust removal, and painting of the lifting lugs. Simultaneously, this method reduces the need for specialized safety measures for hook release, further improving construction efficiency and safety. Attached Figure Description

[0017] Figure 1 This is a side view of the present invention.

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a top view of the dimensions of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 5 This is a cross-sectional dimension drawing of the present invention;

[0022] Figure 6 This is a dimensioned drawing of the lifting lugs of this utility model;

[0023] Figure 7 This is a structural schematic diagram of the ultra-high and ultra-long cantilevered steel truss of this utility model;

[0024] Figure 8 This is a structural schematic diagram of the suspension points of the ultra-high and ultra-long cantilevered steel truss of this utility model.

[0025] The diagram shows: 1-Ultra-high and ultra-long cantilevered steel truss, 2-Arc plate, 3-Lifting lug, 4-Lifting tool stiffening plate, 5-C-shaped channel, 6-Outwardly protruding stiffening plate. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example 1

[0027] like Figures 1 to 8 As shown, a lifting device for ultra-high and ultra-long cantilever steel trusses includes an ultra-high and ultra-long cantilever steel truss 1. Its features include: an arc plate 2 disposed below the top of the ultra-high and ultra-long cantilever steel truss 1; lifting lugs 3 fixedly connected to both sides of the arc plate; and a lifting device stiffening plate 4 disposed between the arc plate 2 and the lifting lugs 3. This lifting device has a simple structure, is easy to manufacture, is safe to lift, and is convenient to install and dismantle. It can be reused, does not require special safety measures for hook removal, and eliminates the need for subsequent processes such as cutting, grinding, rust removal, and painting of the lifting lugs, thus improving construction efficiency and safety.

[0028] like Figures 7 to 8 As shown, a C-shaped groove 5 is provided on one side of the arc plate 2. An externally protruding stiffening plate 6 is fixedly connected to one side of the bottom of the lifting point of the ultra-high and ultra-long cantilever steel truss 1. The C-shaped groove 5 and the externally protruding stiffening plate 6 are matched in position and shape. By setting a C-shaped groove on the lifting device that matches the externally protruding stiffening plate 6, the C-shaped groove 5 of the lifting device is locked at the externally protruding stiffening plate 6 of the upper chord during lifting, which makes it easy to prevent the lifting device from sliding. Example 2

[0029] like Figures 1 to 6As shown, lifting lugs 3 are welded to both sides of the arc plate 2. The lifting lugs 3 and the arc plate 2 are fully penetrated welded. The angle between the lifting lugs 3 and the arc plate 2 is determined based on the angle of the connecting wire rope during the hoisting simulation, effectively avoiding damage to the original structure caused by welding the lifting lugs. Furthermore, when the hook is released, the lifting device automatically detaches from the upper chord, eliminating the need for workers to go to the lifting point to unhook the hook, achieving automatic unhooking. Installing this lifting device on the arched upper chord is also very simple; just place the arc plate against the upper chord at the determined lifting point, with the C-shaped opening on the arc plate engaging the stiffening plate of the upper chord. This lifting device is reusable, eliminating the need for subsequent cutting, grinding, rust removal, and painting of the lifting lugs. Simultaneously, this method reduces the need for specialized safety measures for unhooking, further improving construction efficiency and safety.

[0030] like Figures 1 to 6 As shown, the stiffening plate 4 of the lifting device is welded to the lifting lug 3 and the arc plate 2 on both sides respectively. The wire rope uses one of the lifting lugs of the lifting device to lift the device to a position 10 cm away from the lifting point of the upper chord 4. The worker rides a boom lifter to raise the lifting device and connects the other lifting lug of the lifting device to the wire rope through a shackle. The crane swings its boom to align the C-shaped opening of the lifting device with the outer stiffening plate. The crane hooks up to press the arc plate of the lifting device tightly against the upper chord, and the entire lifting device installation is completed.

[0031] like Figures 1 to 6 As shown, the inner shape of the arc plate 2 is adapted to the shape of the bottom of the lifting point of the ultra-high and ultra-long cantilever steel truss 1. The radius of the arc plate 2 is the sum of the radius of the lifting circular pipe component and half the thickness of the arc plate 2.

[0032] The working principle of this utility model is as follows:

[0033] This lifting device is suitable for ultra-high and ultra-long cantilevered steel trusses with circular tube members and arched structures. It features externally protruding stiffening plates at the lifting points to prevent slippage. First, the force on the wire rope at the lifting point is calculated and simulated. Then, finite element analysis is used to determine the thickness of the arc plate in the lifting device. In modeling software, the arc plate 2, lifting lug 3, and lifting device stiffening plate 4 are constructed as components according to the attached drawings for fabrication. During truss hoisting, the lifting device is lifted to the arch using the main lifting wire rope. At the position of the upper chord, the worker clamps the C-shaped opening of the lifting device onto the stiffening plate of the upper chord. The crane hook lifts the device and presses the arc plate against the wall of the upper chord. After the lifting device is installed, the truss is hoisted after the wire rope is connected to the other end of the truss. After the truss is in place, the lifting device automatically disengages from the upper chord when the wire rope is lowered. The lifting device is then pulled onto the platform using a traction rope. The worker unfastens the shackle of one of the lifting lugs of the lifting device, and the main crane lifts the lifting device to the ground, completing the truss hoisting.

[0034] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A hoisting device for ultra-high and ultra-long cantilevered steel trusses, comprising an ultra-high and ultra-long cantilevered steel truss (1), characterized in that: It also includes an arc plate (2) set below the top of the ultra-high and ultra-long cantilever steel truss (1), a lifting lug (3) fixedly connected to both sides of the arc plate, and a lifting stiffening plate (4) set between the arc plate (2) and the lifting lug (3).

2. The lifting device for ultra-high and ultra-long cantilevered steel trusses according to claim 1, characterized in that: A C-shaped groove (5) is provided on one side of the arc plate (2), and an externally protruding stiffening plate (6) is fixedly connected to one side of the bottom of the suspension point of the ultra-high and ultra-long cantilever steel truss (1). The position and shape of the C-shaped groove (5) and the externally protruding stiffening plate (6) are compatible.

3. The hoisting tool for ultra-high and ultra-long cantilevered steel trusses according to claim 1, characterized in that: The lifting lug (3) is welded to both sides of the arc plate (2). The lifting lug (3) and the arc plate (2) are fully penetrated welded. The angle between the lifting lug (3) and the arc plate (2) is determined according to the angle of the wire rope connected during the hoisting simulation.

4. The lifting device for ultra-high and ultra-long cantilevered steel trusses according to claim 1, characterized in that: The stiffening plate (4) of the lifting device is welded to the lifting lug (3) and the arc plate (2) on both sides respectively.

5. The hoisting tool for ultra-high and ultra-long cantilevered steel trusses according to claim 1, characterized in that: The inner shape of the arc plate (2) is adapted to the shape of the bottom of the suspension point of the ultra-high and ultra-long cantilever steel truss (1), and the radius of the arc plate (2) is the sum of the radius of the suspended circular pipe component and half the thickness of the arc plate (2).

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