Safe hoisting method for steel structure

Abstract

The invention relates to the technical field of steel structure hoisting, in particular to a steel structure safe hoisting method which comprises the steps of construction preparation, moving assembly adjustment, steel structure part clamping, crane in-place, hoisting initial installation, hoisting detection, inclination angle adjustment and hoisting installation completion. According to the safe hoisting equipment and method for the steel structure, through the synergistic effect of the adjusting mechanism, the clamping mechanism and the locking assembly, the safe hoisting equipment and method can rapidly adapt to steel structure parts of different specifications, and the stability and safety in the hoisting process are ensured. The method is easy and convenient to operate, high in adaptability and high in safety, the efficiency and quality of steel structure hoisting operation can be remarkably improved, and the important engineering application value is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure hoisting, and particularly to a method for safely hoisting steel structures. Background Art

[0002] Steel structures are widely used in fields such as buildings, bridges, and industrial facilities, and their hoisting operations are important links in construction. Traditional steel structure hoisting methods usually use simple slings or fixtures for fixation, which have the following problems: Inconvenient adjustment: The specifications and dimensions of steel structures are diverse, and traditional hoisting equipment is difficult to quickly adapt to steel structures of different sizes. The adjustment process is cumbersome and time-consuming. During the hoisting process, the steel structure is prone to tilt or shake, posing safety hazards and affecting construction efficiency and safety. The clamping force of traditional fixtures on the steel structure is insufficient, which may cause the steel structure to fall off during the hoisting process, resulting in safety accidents. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a steel structure safety hoisting device and method. Through the coordinated action of the adjustment mechanism and the clamping mechanism, it can quickly adapt to steel structures of different specifications and ensure the stability and safety of the hoisting process. The following technical solutions are specifically adopted.

[0004] Design a method for safely hoisting steel structures, including the following steps:

[0005] S1: Construction preparation, transport the fabricated steel structure parts to the construction site, inspect the structure parts according to the acceptance standards, and unload and stack them;

[0006] S2: According to the specifications and dimensions of the steel structure parts, loosen the locking assembly, adjust the distance between the two moving components to adapt to the length requirements of the steel structure components. After adjusting the positions of the two moving components, use the locking assembly to lock their positions;

[0007] S3: Start the clamping mechanism and clamp both ends of the steel structure part;

[0008] S4: The crane is in place. By starting the crane, lower the lifting head of the crane to the position of the steel structure part;

[0009] S5: Initial installation of hoisting, connect the hook of the lifting head to the hanging ring of the hoisting frame and perform hoisting;

[0010] S6: Hoisting detection, that is, start the crane, lift the steel structure part to a height between 100 cm and 160 cm, stop the machine for inspection, and observe whether the steel structure part and the device are tilted;

[0011] S7: If it is observed that the steel structure part is tilted, start the crane, release the device back to the ground, and make adjustments to ensure that the tilt angle is less than 10°;

[0012] S8: Lift and install the steel structure. Start the crane, transport the steel structure parts to the installation position, and perform the installation task. After the installation is completed, release the clamping mechanism to release the steel structure parts, thus completing the operation.

[0013] A steel structure safety lifting device, which includes a lifting frame, an adjustment mechanism, and a clamping mechanism connected in sequence from top to bottom. The adjustment mechanism includes an adjustment frame, moving components symmetrically arranged at both ends of the adjustment frame respectively, and a locking component for restricting the movement of the moving components. The moving components include moving blocks arranged on the upper surfaces of the cross beams on the front and rear sides of the adjustment frame, and U-shaped plates slidably sleeved on the lower ends of the cross beams. The upper ends of the U-shaped plates are fixedly connected to the moving blocks. A moving rod is connected between two opposite U-shaped plates on the same side. A connecting rod is respectively hinged at the middle position of the top of each moving rod. The two connecting rods are cross-rotationally connected, and the tops of the connecting rods are respectively slidably connected to the bottom of the lifting frame. The clamping mechanism is arranged at the bottom of the U-shaped plate.

[0014] Preferably, the locking component includes locking grooves opened at the upper ends of each cross beam, through grooves arranged inside the fixed blocks, locking rods slidably arranged in the through grooves, return springs sleeved on the locking rods, and limit plates fixed at the lower ends of the locking rods. The limit plates are slidably connected to the through grooves. The top of the locking rod extends out of the through groove and is connected with a handle, and the bottom movably passes through the through groove and extends into the locking groove.

[0015] Preferably, hanging rings are respectively arranged at the four corners of the top of the lifting frame, and slings are respectively connected to each hanging ring. The other ends of the slings are all connected to the same lifting ring.

[0016] Preferably, two sliding grooves are respectively opened at the bottom of the lifting frame, and sliders are slidably arranged in the sliding grooves. The tops of the connecting rods are fixedly connected to the sliders.

[0017] Preferably, the clamping mechanism includes an inverted U-shaped mounting plate fixed at the bottom of two U-shaped plates on the same side, a bidirectional threaded rod rotatably arranged between the mounting plates, moving blocks threadedly engaged with the bidirectional threaded rod, and "∟"-shaped clamping plates respectively arranged at the bottoms of the moving blocks. A clamping motor is fixed on one side of the mounting plate, and the output end of the clamping motor is coaxially connected to the bidirectional threaded rod. A guide rod is arranged between the bidirectional threaded rod and the mounting plate. The moving blocks are slidably penetrated through the guide rod.

[0018] Preferably, the bottoms of the clamping plates are inclined upward.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. Through the synergistic effect of the adjustment mechanism and the moving components, the present invention can quickly adapt to steel structure parts of different specifications and sizes, improving the flexibility and efficiency of the lifting operation.

[0021] 2. The "L"-shaped clamping plate and the double-threaded rod design of the clamping mechanism can firmly clamp the steel structure parts, prevent shaking or falling off during the hoisting process, and ensure the stability of the hoisting process.

[0022] 3. The design of the locking component and the return spring can effectively fix the adjusted position, prevent accidental movement during the hoisting process, and improve the operation safety.

[0023] 4. By controlling the operations of the locking component and the clamping motor through the handle, the adjustment and clamping processes are simplified, and the operation difficulty and labor intensity are reduced.

[0024] 5. It is applicable to the steel structure hoisting operations in various scenarios such as buildings, bridges, and industrial facilities, and has a wide application prospect. Description of the Drawings

[0025] Figure 1 is the overall structural schematic diagram of the structure of the present invention;

[0026] Figure 2 is the structural schematic diagram of the adjustment mechanism;

[0027] Figure 3 is the structural schematic diagram of the clamping mechanism;

[0028] Figure 4 is the side view structural schematic diagram of the adjustment mechanism;

[0029] Figure 5 is Figure 4 the enlarged structural schematic diagram at A in

[0030] The reference numerals in the figure are: 1 adjustment frame, 2 U-shaped plate, 3 handle, 4 connecting rod, 5 hoisting frame, 6 sliding groove, 7 hanging ring, 8 slider, 9 sling, 10 lifting ring, 11 mounting plate, 12 clamping motor, 13 clamping plate, 14 cross beam, 15 fixing block, 16 moving rod, 17 locking groove, 18 through groove, 19 return spring, 20 limiting plate, 21 locking rod, 22 moving block, 23 double-threaded rod, 24 guide rod. Detailed Embodiment

[0031] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0032] Embodiment 1

[0033] A steel structure safety hoisting device, as Figures 1 to 5As shown, it includes a hanging frame 5, an adjustment mechanism, and a clamping mechanism connected in sequence from top to bottom. Hanging rings 7 are respectively provided at the four corners of the top of the hanging frame 5, and a sling 9 is respectively connected to each hanging ring 7, and the other end of the sling 9 is connected to the same hanging ring 10. The equipment is connected to the sling 9 through the four hanging rings 7 on the top of the hanging frame 5, and the other end of the sling 9 is centrally connected to a hanging ring 10, which is convenient for overall lifting by equipment such as a crane. The hanging frame 5 serves as the upper supporting structure of the entire equipment and bears the main force during the lifting process.

[0034] The adjustment mechanism includes an adjustment frame 1, a moving assembly symmetrically arranged at both ends of the adjustment frame 1, and a locking assembly for limiting the movement of the moving assembly. The locking assembly includes a locking groove 17 provided at the upper end of each crossbeam 14, a through groove 18 provided inside the fixed block 15, a locking rod 21 slidably arranged in the through groove 18, a reset spring 19 sleeved on the locking rod 21, and a limit plate 20 fixed at the lower end of the locking rod 21. The limit plate 20 is slidably connected with the through groove 18. The top of the locking rod 21 extends out of the through groove 18 and is connected with a handle 3, and the bottom movably passes through the through groove 18 and extends into the locking groove 17. The locking groove 17 is provided on the crossbeam 14 of the adjustment frame 1, and the locking rod 21 is slidably connected in the fixed block 15 through the through groove 18. The top of the locking rod 21 is provided with a handle 3, and the bottom extends into the locking groove 17. The reset spring 19 is sleeved on the locking rod 21 to maintain the reset state of the locking rod 21. When the U-shaped plate 2, the fixed block 15, and the clamping mechanism are adjusted to a suitable position, the handle 3 is released, the reset spring 19 is reset, and the locking rod 21 is inserted downward into the locking groove 17 under the action of the reset spring 19, limiting the further movement of the moving block 22, ensuring that the position of the clamping mechanism is fixed after adjustment. When the handle 3 is pulled upward, the reset spring 19 is compressed between the limit plate 20 and the through groove 18, and the locking rod 21 moves upward and out of the locking groove 17, releasing the locked state, and the position of the fixed block 15, the U-shaped plate 2, and the clamping mechanism can be adjusted.

[0035] The moving component includes moving blocks 22 provided on the upper surfaces of the cross beams 14 on the front and rear sides of the adjusting frame 1, and U-shaped plates 2 slidably sleeved on the lower ends of the cross beams 14. The upper ends of the U-shaped plates 2 are fixedly connected to the moving blocks 22. A moving rod 16 is connected between two opposite U-shaped plates 2 on the same side. At the middle positions of the tops of each moving rod 16, connecting rods 4 are respectively hinged. The two connecting rods 4 are cross-rotationally connected, and the tops of the connecting rods 4 are respectively slidably connected to the bottom of the hoisting frame 5. Specifically, two chutes 6 are respectively formed at the bottom of the hoisting frame 5, and sliders 8 are slidably provided in the chutes 6. The tops of the connecting rods 4 are fixedly connected to the sliders 8. Moving blocks 22 are provided on the cross beams 14 on the front and rear sides of the adjusting frame 1, and the moving blocks 22 are slidably connected to the cross beams 14 through the U-shaped plates 2. The U-shaped plates 2 are connected by the moving rod 16, and the tops of the moving rods 16 are hinged with the crossed connecting rods 4. The tops of the connecting rods 4 are connected to the sliders 8 at the bottom of the hoisting frame 5, and the sliders 8 can slide in the chutes 6 at the bottom of the hoisting frame 5. When it is necessary to adjust the clamping position of the steel structure member, the sliding of the moving block 22 drives the U-shaped plate 2 and the moving rod 16 to move, and then the crossed movement of the connecting rod 4 pushes the slider 8 at the bottom of the hoisting frame 5 to slide in the chute 6, so as to realize that the U-shaped plate 2 drives the two clamping mechanisms to move away from or close to each other, and further can stably clamp according to the specification size of the steel structure member.

[0036] The clamping mechanism is provided at the bottom of the U-shaped plate 2. The clamping mechanism includes an inverted U-shaped mounting plate 11 fixed to the bottoms of two U-shaped plates 2 on the same side, a bidirectional threaded rod 23 rotatably provided between the mounting plates 11, a moving block 22 threadedly engaged with the bidirectional threaded rod 23, and "∟"-shaped clamping plates 13 respectively provided at the bottoms of the moving blocks 22. A clamping motor 12 is fixed to one side of the mounting plate 11, and the output end of the clamping motor 12 is coaxially connected to the bidirectional threaded rod 23. A guiding rod 24 is provided between the bidirectional threaded rod 23 and the mounting plate 11, and the moving block 22 slidably passes through the guiding rod 24. The bottoms of the clamping plates 13 are inclined upward, which is convenient for better fitting the surface of the steel structure during clamping, and increases the stability and safety of clamping. The clamping motor 12 drives the bidirectional threaded rod 23 to rotate, and the moving block 22 on the bidirectional threaded rod 23 moves relatively or in the opposite direction under the guidance of the guiding rod 24. The "∟"-shaped clamping plates 13 at the bottoms of the moving blocks 22 approach or move away as the moving blocks 22 move, so as to clamp or release the steel structure.

[0037] Under the action of the adjusting mechanism and the clamping mechanism, the equipment can accurately adjust the position of the hoisting frame 5 and firmly clamp the steel structure. The equipment is integrally lifted with the steel structure by the sling 9 and the lifting ring 10 to complete the safe hoisting operation. The equipment realizes the accurate position adjustment of the hoisting frame 5 through the adjusting mechanism and firmly clamps the steel structure through the clamping mechanism, ensuring the safety and stability of the hoisting process.

[0038] Embodiment 2

[0039] A method for safely hoisting steel structures, comprising the following steps:

[0040] S1: Construction preparation

[0041] Transport the fabricated steel structure components to the construction site, and inspect the structure components according to the acceptance standards to ensure that their dimensions, weights, and qualities meet the requirements.

[0042] Unload the steel structure components and stack them reasonably to ensure that there are no obstacles in the hoisting operation area and make preparations for the hoisting operation.

[0043] S2: Adjust the moving components

[0044] According to the specifications of the steel structure components, loosen the handle 3 of the locking component, so that the locking rod 21 is disengaged from the locking groove 17 under the action of the return spring 19, and the restriction on the moving components is released.

[0045] Drive the U-shaped plate 2 and the moving rod 16 to move by the sliding of the moving block 22, and then drive the slider 8 at the bottom of the hoisting frame 5 to slide in the chute 6 through the cross movement of the connecting rod 4, and adjust the distance between the two moving components to adapt to the length requirements of the steel structure components.

[0046] After the adjustment is in place, loosen the handle 3, the return spring 19 resets, and the locking rod 21 is inserted downward into the locking groove 17 to restrict the further movement of the moving block 22 and ensure that the adjusted position is fixed.

[0047] S3: Clamp the steel structure components

[0048] Start the clamping motor 12 of the clamping mechanism to drive the bidirectional threaded rod 23 to rotate, so that the moving block 22 moves relatively under the guidance of the guide rod 24.

[0049] The "∟"-shaped clamping plate 13 at the bottom of the moving block 22 approaches the steel structure components as the moving block 22 moves until the two ends of the steel structure components are firmly clamped.

[0050] S4: Position the crane

[0051] Move the crane to the vicinity of the steel structure components to ensure that the lifting head of the crane can accurately fall to the position of the steel structure components.

[0052] Inspect the components such as the lifting cable 9 and the hook of the crane to ensure that they are in good condition without wear or damage.

[0053] S5: Initial hoisting and installation

[0054] Connect the hook of the crane to the hanging ring 7 of the hoisting frame 5 to ensure a firm connection.

[0055] Start the crane and slowly lift the hoisting frame 5 and the steel structure components for initial hoisting.

[0056] S6: Lifting Detection

[0057] Lift the steel structure to a height between 100 cm and 160 cm, and stop the machine for inspection.

[0058] Observe whether the steel structure and the device are tilted, check whether the clamping mechanism is firm, and whether the sling 9 and the hook are normal.

[0059] S7: Adjust the Tilt Angle

[0060] If it is found that the steel structure is tilted, start the crane and slowly release the device back to the ground.

[0061] Readjust the position of the moving component or the clamping force of the clamping mechanism to ensure that the tilt angle of the steel structure is less than 10°.

[0062] S8: Complete Hoisting and Installation

[0063] Start the crane and transport the steel structure to the installation position.

[0064] Perform precise alignment at the installation position to complete the installation task of the steel structure.

[0065] After the installation is completed, loosen the clamping mechanism, release the steel structure, and complete the hoisting operation.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for safe lifting of a steel structure, characterized in that: The following steps are involved: S1: Construction preparation, transporting the steel structure parts manufactured in sections to the construction site, inspecting the structure parts according to the acceptance standards, and unloading and stacking; S2: According to the specifications and dimensions of the steel structure, loosen the locking assembly and adjust the distance between the two moving assemblies to adapt to the length requirements of the steel structure. After adjusting the positions of the two moving assemblies, use the locking assembly to lock their positions; S3: Start the clamping mechanism to clamp the two ends of the steel structure; S4: The crane is in place. The crane is started and the crane head is lowered to the position of the steel structure. S5: Initial installation of hoisting, connect the hook of the head to the hanging ring of the hoisting frame and start hoisting; S6: Hoisting inspection, i.e. starting the crane, lifting the steel structure to between 100cm and 160cm, stopping the crane for inspection, and observing whether the steel structure and the device are tilted; S7: If the steel structure is observed to be tilted, start the crane, release the device back to the ground, and make adjustments to ensure that the tilt angle is less than 10°; S8: Lift and install the steel structure, start the crane, transport the steel structure to the installation location, and perform the installation task. After the installation is completed, release the clamping mechanism to release the steel structure, and the operation is completed.

2. The method for safe lifting of a steel structure according to claim 1, characterized in that: It is realized based on the safe lifting equipment of steel structure, which includes a lifting frame, an adjustment mechanism, and a clamping mechanism connected in sequence from top to bottom, the adjustment mechanism includes an adjustment frame, moving components symmetrically arranged at both ends of the adjustment frame, and a locking component for limiting the movement of the moving component, the moving component includes a moving block arranged on the upper surface of the beams on the front and rear sides of the adjustment frame, and a U-shaped plate slidably sleeved on the lower end of the beam, the upper end of the U-shaped plate is fixedly connected to the moving block, and a moving rod is connected between two opposite U-shaped plates on the same side, and a connecting rod is hinged at the middle position of the top of each moving rod, the two connecting rods are cross-rotatingly connected, and the top of the connecting rod is respectively slidably connected to the bottom of the lifting frame, and the clamping mechanism is arranged at the bottom of the U-shaped plate.

3. The method for safe lifting of steel structures according to claim 2, characterized in that: The locking assembly includes a locking groove opened at the upper end of each cross beam, a through groove arranged inside the fixed block, a locking rod slidably arranged in the through groove, a return spring sleeved on the locking rod, and a limit plate fixed at the lower end of the locking rod. The limit plate is slidably connected to the through groove, the top of the locking rod extends out of the through groove and is connected to a handle, and the bottom movably passes through the through groove and extends into the locking groove.

4. The method for safe lifting of a steel structure according to claim 2, characterized in that: Hanging rings are respectively arranged at the four corners of the top of the hanging frame, and a sling is respectively connected to each hanging ring, and the other ends of the slings are connected to the same hanging ring.

5. The method for safe lifting of steel structures according to claim 2, characterized in that: Two slide grooves are respectively arranged at the bottom of the hanging frame, and a sliding block is slidably arranged in the slide groove, and the top of the connecting rod is fixedly connected to the sliding block.

6. The method for safe lifting of a steel structure according to claim 2, characterized in that: The clamping mechanism includes an inverted U-shaped mounting plate fixed to the bottom of two U-shaped plates on the same side, a bidirectional threaded rod rotatably arranged between the mounting plates, a movable block threadably matched with the bidirectional threaded rod, and "∟"-shaped clamping plates respectively arranged at the bottom of the movable blocks. A clamping motor is fixed to one side of the mounting plate, and the output end of the clamping motor is coaxially connected to the bidirectional threaded rod. A guide rod is provided between the bidirectional threaded rod and the mounting plate, and the movable block is slidably passed through the guide rod.

7. The method for safe lifting of a steel structure according to claim 6, characterized in that: The bottom of the clamping plate is arranged to be inclined upward.

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