A hoisting method for high and large fabricated cavity members

Abstract

This invention discloses a method for hoisting tall prefabricated hollow components, belonging to the field of component hoisting technology; it includes the following steps: S1, placing the hollow component flat on a platform; S2, tying the main hoisting rope to the top of the hollow component; S3, installing an E-shaped auxiliary clamp on the top of the hollow component and attaching it to the crane's main hook with a manual hoist; S4, slowly raising the main hook to gradually tighten the main hoisting rope and the chain of the manual hoist until taut; S5, adjusting the length of the chain of the manual hoist so that the tension of the chain is greater than that of the main hoisting rope; S6, hoisting. This invention solves the stress problem of the double-leaf plate during the hoisting of tall prefabricated hollow components, prevents tearing between the internal steel reinforcement and concrete, and avoids damage to the component itself; it also avoids the problem of insufficient verticality when the component is hoisted into place, which affects the connection process between the hoisted component and the base.

Description

Technical Field

[0001] This invention relates to the field of component hoisting technology, and in particular to a method for hoisting tall prefabricated hollow components. Background Technology

[0002] Because prefabricated hollow components are relatively large in size (high in height, generally 6-10m), have a large spacing between the double-leaf plates, and are heavy in weight, they are relatively fragile during hoisting, as the main load-bearing structure of the double-leaf plates. Therefore, how to ensure the stability of tall prefabricated hollow components during hoisting, while maintaining vertical installation when the components are hoisted into place, is a topic worthy of research.

[0003] When hoisting vertical cavity components in ordinary prefabricated civil buildings, regardless of whether the cavity component is placed on its side or flat, it is generally hoisted directly by the lifting ring on the top of the component. Because the components are small in size, height, and weight, this hoisting method will not damage the stability of the cavity component itself during the hoisting process, or the damage will be minimal.

[0004] This hoisting method cannot meet the requirements of tall, prefabricated, hollow pool components. Direct hoisting would cause tearing between the lifting lugs and the blades, and would also negatively affect the force direction of the retaining rings. Once the integrity of the component itself is compromised, in addition to weakening its strength, it would also cause structural leakage after the pool is filled with water.

[0005] In the installation of prefabricated buildings using a lifting method, a combination of pulley blocks, wire ropes, and universal lifting rings can be used to lift components with large dimensions and weight.

[0006] This hoisting method requires high strength in the component itself. Because universal lifting rings need to be embedded on the side, the concrete of the component must reach a certain thickness. However, the thickness of the concrete blades in the hollow component is insufficient to meet the thickness requirements for installing the universal lifting rings. Furthermore, when the component is hoisted into place, because the hoisting point is on one side (not vertically coinciding with the component's center of gravity), the component's verticality needs to be corrected or adjusted a second time before installation. Therefore, this increases the number of procedures and prolongs the installation time. Summary of the Invention

[0007] The purpose of this invention is to solve the many inconveniences in the hoisting process of tall and hollow components in the prior art, and to propose a hoisting method for tall prefabricated hollow components.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A method for hoisting tall prefabricated hollow components includes the following steps: S1. Place the cavity component flat on the platform; S2. Secure the main lifting rope to the top of the hollow component; S3. Install an E-shaped auxiliary clamp on the top of the cavity component and attach it to the main hook of the crane using a manual hoist; S4. Slowly raise the main hook to gradually tighten the main hoisting rope and the chain of the manual hoist until it is taut. S5. Adjust the length of the chain of the manual hoist so that the tension of the chain is greater than that of the main hoisting rope 2. S6. Lifting.

[0009] In some embodiments, in step S2: Calculate the connection position of the main lifting rope to ensure that the center of gravity of the component coincides with the lifting ring when it is vertically lifted.

[0010] In some embodiments, in step S2: Secure the main lifting rope to the main lifting ring at the top of the cavity component using a shackle.

[0011] In some embodiments, in step S6: After the chain tension is adjusted to the correct level, the crane main hook is slowly raised. As the angle between the component and the ground gradually increases to more than 45 degrees, and then to 90 degrees, the auxiliary clamps will gradually experience less force as the angle increases, and the weight of the component will gradually transfer to the main lifting rope until the component is completely upright. At this point, the auxiliary clamp naturally detaches, and the entire weight of the component is transferred to the main lifting ring and the main lifting rope; The crane's main hook continued to lift, safely transferring the component to the installation position; Once the component is installed and secured in place, remove the shackles from the main lifting ring and unload the auxiliary clamps; the component hoisting is now complete.

[0012] In some embodiments, the auxiliary clamp includes an upper clamp, a lower clamp, an inner support, and a carrier connecting the three. In the installed state, the upper and lower clamps are close to the outer surface of the component, and the two sides of the inner support are close to the inner wall surface of the component.

[0013] In some embodiments, the upper clip, lower clip, and carrier form a C-shaped structure, and the inner support is fixed to the inner side of the C-shaped structure.

[0014] In some embodiments, the upper clamp, lower clamp, inner support, and load-bearing component are constructed by welding steel plates, channel steel, or square steel.

[0015] In some embodiments, the inner support member includes upper and lower support plates, and a connector fixed between the upper and lower support plates.

[0016] In some embodiments, the inner sides of the upper and lower clamps, and the two sides of the inner support are respectively provided with top plates that are close to the component.

[0017] In some embodiments, the distance between the top plate and the component can be adjusted; A screw is provided on the top plate, and the screw is threadedly connected to the auxiliary clamp.

[0018] Compared with the prior art, the present invention provides a method for hoisting tall prefabricated cavity components, which has the following beneficial effects.

[0019] 1. This invention enables technical control over the structural stability and verticality of tall, hollow components during the hoisting process.

[0020] 2. This invention solves the stress problem of double-leaf plates in the lifting process of tall prefabricated cavity components, prevents the tearing between the steel bars and concrete inside the cavity, and avoids the problem of the verticality of the component not being guaranteed when it is hoisted into place, which affects the connection process between the hoisted component and the base.

[0021] 3. This invention can complete the hoisting using only a single lifting device, without the need for other lifting equipment, thus saving on the daily operating costs of machinery.

[0022] 4. The hoisting method of this invention is simple to operate, requires less preliminary preparation, and the E-type auxiliary clamp is lightweight and easy to install, allowing for operation by a single person.

[0023] 5. This invention automatically achieves force transition, ensuring the stability of the components under stress and vertical hoisting.

[0024] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the first half of the lifting process.

[0026] Figure 2 This is a schematic diagram of the second half of the lifting process.

[0027] Figure 3 This is a schematic diagram of vertical lifting and transport.

[0028] Figure 4 This is a structural diagram of the auxiliary clamp.

[0029] Figure 5 This is a side view of the auxiliary clamp structure.

[0030] Figure 6 This is a front view structural diagram of the auxiliary clamp.

[0031] Figure 7 A schematic diagram of the structure of the auxiliary clamp paired with the top plate.

[0032] Figure 8 A side view diagram of the auxiliary clamp and top plate structure.

[0033] Figure 9 A front view structural diagram of the top plate used as an auxiliary clamp.

[0034] Figure 10 This is a structural schematic diagram of the internal support component.

[0035] Figure 11 This is a structural diagram of the two top plates of the internal support member.

[0036] Figure 12 A partial structural diagram showing the state of the components.

[0037] In the picture: 100. Components; 1. Auxiliary clamps; 11. Upper clamping component; 12. Lower clamping component; 13. Internal support component; 14. Bearing component; 131. Upper and lower support plates; 132. Connecting parts; 2. Main hoisting rope; 3. Manual hoist; 4. Top plate; 41. Screw. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Reference Figure 1-3 A method for hoisting tall prefabricated hollow components includes the following steps: S1. Place the cavity component 100 flat on the platform; S2. Tie the main lifting rope 2 to the top of the cavity component; S3. Install the E-shaped auxiliary clamp 1 on the top of the cavity component and attach it to the main hook of the crane with a manual hoist 3; S4. Slowly raise the main hook to gradually tighten the main hoisting rope 2 and the chain of the manual hoist 3 until they are taut. S5. Adjust the length of the chain of the manual hoist 3 so that the tension of the chain is greater than that of the main hoisting rope 2. Thus, in the first half of the lifting process, that is, before the component is at less than 45 degrees to the ground, the E-shaped auxiliary clamp 1 will bear the force first; S6. Lifting.

[0040] It should be noted that the auxiliary clamp 1 is not fixedly installed, but is clamped at the end of the cavity component; in the first half of the process, the direction of force is used to prevent it from slipping out.

[0041] It should be noted that in step S2: By calculating the connection position of the main lifting rope 2, it is ensured that the center of gravity of component 100 coincides with the main hook lifting ring of the crane when it is vertically lifted.

[0042] Preferably, in step S2: Attach the main lifting rope 2 to the main lifting ring at the top of the cavity component using a shackle.

[0043] It should be noted that the position of the main lifting ring must be stable and reliable; the main lifting ring can be pre-embedded during the casting of the component and placed in the middle of the component thickness.

[0044] In some embodiments, in step S6: After the tension of the lifting chain is adjusted to the correct level, the main hook of the crane is slowly raised.

[0045] In the first half of the stroke, the inner support and outer clamp of the auxiliary clamp 1 allow both blades to bear force simultaneously, which can avoid blade tearing, excessive local force, damage, etc. caused by the setting of the lifting points.

[0046] As the angle between the component and the ground gradually increases to more than 45 degrees, and then to 90 degrees, the auxiliary clamp 1 will gradually experience less force as the angle increases, and the weight of the component will gradually transfer to the main lifting rope 2 until the component 100 is completely upright.

[0047] At this point, the auxiliary clamp 1 naturally falls off, and the entire weight of component 100 is transferred to the main lifting ring and the main lifting rope 2.

[0048] Furthermore, because the main lifting rope 2 was calculated in advance to ensure that the center of gravity of the component coincides with the main hook of the crane, the component can be guaranteed to be in a vertical state.

[0049] The crane's main hook continued to lift, safely transferring the component to its installation position.

[0050] Once the component is installed and secured, remove the main lifting ring's retaining ring and unload auxiliary clamp 1; the component hoisting is now complete.

[0051] It should be noted that: In the accompanying drawings of this embodiment, a lifting ring is hung on the main hook of the crane, and the lower end of the lifting ring is connected to a horizontally extending boom; the main lifting rope 2 and the manual hoist 3 are connected to the boom to avoid poor balance when the main lifting rope 2 and the manual hoist 3 are laid inward at an incline.

[0052] Reference Figure 4-12 In some embodiments: The auxiliary clamp 1 includes an upper clamp 11, a lower clamp 12, an inner support 13, and a load-bearing member 14 connecting the three. In the installed state, the upper clamp 11 and the lower clamp 12 are close to the outer side of the component 100, and the two sides of the inner support 13 are close to the inner wall of the component 100, thus realizing inner support and outer clamping.

[0053] The upper clamp 11, lower clamp 12, and bearing member 14 form a C-shaped structure that covers the outside of the component; the inner support member 13 is fixed to the inside of the C-shaped structure and inserted into the cavity of the component.

[0054] Preferably, the upper clamp 11, lower clamp 12, inner support 13, and bearing 14 are made of steel plates, channel steel, or square steel welded together.

[0055] As in the appendix Figure 4 In the middle, the upper clamp 11, the lower clamp 12, and the bearing member 14 are made of welded steel plates, with two side wing plates and a bottom plate, and a connecting plate is set inside to strengthen the whole; the inner support member 13 is made of square steel.

[0056] Additionally, to facilitate the connection of the manual hoist 3, pins are provided through the two side wing plates of the bearing component 14 for hooking.

[0057] The pin is preferably positioned in the middle, but it can also be positioned slightly off to either side; for example, in the attached... Figure 4 The example shows three pins.

[0058] In some embodiments, the inner support member 13 includes upper and lower support plates 131, and a connector 132 fixed between the upper and lower support plates 131.

[0059] It should be noted that in order to ensure that the inner wall of the component 100 is supported, the inner support 13 should have a certain thickness; if a single square steel is used directly, the required specifications are relatively large and unnecessary; here, two support surfaces are set, and the distance between the support surfaces is controlled by the connector 132, which is more convenient to manufacture and has higher strength.

[0060] As in the appendix Figure 10 As shown, the upper and lower support plates 131 are made of square steel, and the connecting parts 132 are made of smaller square steel; of course, channel steel or steel plates can also be used for welding.

[0061] In some embodiments, the inner sides of the upper clip 11 and the lower clip 12, as well as the two sides of the inner support 13, are respectively provided with top plates 4 that are close to the component 100.

[0062] Preferably, the top plate 4 is circular.

[0063] Furthermore, the distance between the top plate 4 and the component 100 can be adjusted to achieve a better clamping effect and facilitate disassembly.

[0064] Specifically, a screw 41 is provided on the top plate 4, and the screw 41 is threadedly connected to the auxiliary clamp 1.

[0065] Preferably, the auxiliary clamp 1 is provided with a sleeve that matches the screw 41.

[0066] Before installation, adjust the top plate 4 to make the space larger; after placing it in place, adjust the top plate 4 to be close to the component 100; be careful not to push it too tightly.

[0067] This invention is used for: technical control of the structural stability and verticality of tall, hollow components during the hoisting process.

[0068] This invention solves the stress problem of double-leaf plates in tall prefabricated cavity components during lifting, prevents tearing between the steel bars and concrete inside the cavity, and avoids damage to the component itself; it also avoids the problem of insufficient verticality when the component is hoisted into place, which affects the connection process between the hoisted component and the base.

[0069] This invention has at least the following beneficial effects: 1. Lifting can be completed using only a single lifting device, eliminating the need for other lifting equipment and saving on machine operating costs; 2. The hoisting method is simple to operate, requires less preliminary preparation, and the E-type auxiliary clamp is lightweight and easy to install, allowing for operation by a single person; 3. Automatically achieves force transition, ensuring the stability of the components under stress and vertical hoisting.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for hoisting tall prefabricated hollow components, characterized in that, Includes the following steps: S1. Place the cavity component (100) flat on the platform; S2. Tie the main lifting rope (2) to the top of the cavity component; S3. Install an E-shaped auxiliary clamp (1) on the top of the cavity component and attach it to the main hook of the crane with a manual hoist (3); S4. Slowly raise the main hook to gradually tighten the main hoisting rope (2) and the chain of the manual hoist (3) until they are taut. S5. Adjust the length of the chain of the manual hoist (3) so that the tension of the chain is greater than that of the main hoisting rope (2); S6. Lifting; Wherein: the auxiliary clamp (1) includes an upper clamp (11), a lower clamp (12), an inner support (13), and a load-bearing member (14) connecting the three; in the installed state, the upper clamp (11) and the lower clamp (12) are close to the outer side of the component (100), and the two sides of the inner support (13) are close to the inner wall of the component (100); The upper clamp (11), lower clamp (12), and bearing member (14) form a C-shaped structure, and the inner support member (13) is fixed on the inner side of the C-shaped structure; The inner sides of the upper clamp (11) and lower clamp (12), as well as the two sides of the inner support (13), are respectively provided with top plates (4) that are close to the component (100).

2. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, In step S2: Calculate the connection position of the main lifting rope (2) to ensure that the center of gravity of the component (100) coincides with the lifting ring when it is vertically lifted.

3. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, In step S2: The main lifting rope (2) is attached to the main lifting ring at the top of the cavity component using a shackle.

4. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, In step S6: After the chain tension is adjusted to the correct level, the crane main hook is slowly raised. As the angle between the component and the ground gradually increases to more than 45 degrees, up to 90 degrees, the auxiliary clamp (1) will gradually be subjected to less force as the angle increases, and the weight of the component will gradually be transferred to the main lifting rope (2) until the component (100) is completely upright; At this time, the auxiliary clamp (1) falls off naturally, and the entire weight of the component (100) is transferred to the main lifting ring and the main lifting rope (2); The crane's main hook continued to lift, safely transferring the component to the installation position; Once the component is installed and fixed in place, remove the main lifting ring and unload the auxiliary clamp (1), and the component hoisting is complete.

5. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, The upper clamp (11), lower clamp (12), inner support (13), and bearing (14) are made of steel plates, channel steel, or square steel welded together.

6. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, The inner support member (13) includes upper and lower support plates (131) and a connector (132) fixed between the upper and lower support plates (131).

7. The method for hoisting tall prefabricated hollow components according to claim 1, characterized in that, The distance between the top plate (4) and the component (100) is adjustable; A screw (41) is provided on the top plate (4), and the screw (41) is threadedly connected to the auxiliary clamp (1).

Images