Large-diameter anti-corrosion steel pipe hoisting structure

Through the C-type sling structure, the high temperature resistance of curved plates and PTFE plates is used to solve the problems of low corrosion efficiency and lifting damage during the cooling process of traditional anti-corrosion steel pipes, and the continuous anti-corrosion and efficient lifting of steel pipes are achieved, ensuring that Pipe quality.

CN222273866UActive Publication Date: 2024-12-31SHANDONG DONGHONG PIPE IND
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Patent Information

Application Number
CN202421011503.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-10
Publication Date
2024-12-31
Estimated Expiration
2034-05-10

AI Technical Summary

Technical Problem

Traditional anti-corrosion steel pipes cannot be continuously coated and anti-corrosion during cooling, and the lifting process can easily lead to pipe mouth damage and coating pits, affecting the anti-corrosion efficiency and pipe quality.

Method used

Using a C-type spreader structure, including curved plates and polytetrafluoro plates, the curved plates come into contact with the inner wall of the steel pipe. The polytetrafluoro plates are resistant to high temperatures, allowing the steel pipe to be moved after coating is completed, and through the C-type spreader, Steel pipe contact is lifted to reduce the damage to the steel pipe by direct hooks.

Benefits of technology

The continuity of steel pipe anti-corrosion is achieved, production efficiency is improved, coating damage and pipe port deformation is avoided, and the quality of steel pipe is ensured.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a large-caliber anti-corrosion steel pipe hoisting structure, which belongs to the technical field of steel pipe hoisting and comprises a C-shaped hoisting tool, a hoisting lug is fixedly arranged at the top of the C-shaped hoisting tool, and the hoisting lug is connected with a hoisting ring through a hoisting ring rope; the C-shaped lifting appliance comprises a first horizontal part and a second horizontal part which are arranged in parallel, a vertical part is connected between the first horizontal part and the second horizontal part, an arc-shaped plate is fixedly arranged at the top of the second horizontal part, and a first polytetrafluoroethylene plate is fixedly arranged on the top surface of the arc-shaped plate.
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Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe hoisting, and in particular relates to a large-diameter anti-corrosion steel pipe hoisting structure. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In the current pipeline industry, anti-corrosion steel pipes have become the mainstream pipe material and are widely used in large-scale water diversion and regulation projects such as industry, water conservancy, and municipal administration. In traditional anti-corrosion pipelines, inner epoxy and outer polyethylene powder anti-corrosion has become the mainstream of steel pipe anti-corrosion. Its product structure is based on spiral welded pipe as the base material, the outer layer is polyethylene layer, and the inner layer is epoxy resin layer.

[0004] Because the base pipe of this type of product needs to be heat treated before coating, the pipe body temperature must be at least above 220-240℃. After the coating is completed, the temperature of the composite steel pipe is still maintained at about 170℃. However, due to the large volume of the pipe body, a lot of time is required to cool it down. At this time, the polyethylene coating is not completely solidified, and the pipe cannot be laid down in time. It is necessary to wait until the pipe body temperature reaches below 70℃ and the polyethylene coating is completely solidified before the composite steel pipe can enter the next process. As a result, the pipe body cannot be coated with anti-corrosion for the next steel pipe during the cooling process, and the anti-corrosion of the pipe cannot be continuously performed, resulting in low anti-corrosion efficiency of the pipe. If the pipe is forced to be laid down during this process, the coating on the outer wall of the steel pipe will be damaged, and defects such as coating pits will appear. The traditional use of hook tools to hoist steel pipes is easy to cause damage and deformation of the standard groove of the pipe mouth due to the weight of the large-diameter pipe itself, which increases the difficulty of pipe welding. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a large-diameter anti-corrosion steel pipe lifting structure, which can protect the steel pipe and move the steel pipe to other areas for cooling after the anti-corrosion coating is completed, thereby ensuring the continuity of the pipe's anti-corrosion.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In the first aspect, the utility model provides a large-diameter anti-corrosion steel pipe lifting structure, including a C-type lifter, a lifting ear is fixedly arranged on the top of the C-type lifter, and the lifting ear is connected to the lifting ring through a lifting ring rope; the C-type lifter includes a first horizontal part and a second horizontal part arranged in parallel, a vertical part is connected between the first horizontal part and the second horizontal part, an arc plate is fixedly arranged on the top of the second horizontal part, and a first polytetrafluoro plate is fixedly arranged on the top surface of the arc plate.

[0008] As a further technical solution, the arc-shaped plate is arranged perpendicular to the second horizontal portion.

[0009] As a further technical solution, the center of the arc plate is located below the C-shaped hanger.

[0010] As a further technical solution, a rib is provided at the bottom of the arc-shaped plate, and the rib is fixedly connected to the bottom of the arc-shaped plate and the side wall of the second horizontal portion.

[0011] As a further technical solution, a second polytetrafluoro plate is fixedly provided on the side wall of the vertical portion of the C-type sling.

[0012] As a further technical solution, the vertical portion is vertically connected to the first horizontal portion and the second horizontal portion, and the first horizontal portion, the vertical portion and the second horizontal portion are connected to form a C-shaped structure.

[0013] As a further technical solution, the first horizontal portion, the vertical portion and the second horizontal portion are an integrated structure.

[0014] As a further technical solution, the lifting ear is fixedly arranged on the top of the first horizontal portion, and the length of the first horizontal portion is greater than the length of the second horizontal portion.

[0015] As a further technical solution, a plurality of lifting ears are arranged on the top of the C-shaped lifting device, and the tops of the plurality of lifting ears are connected to the same lifting ring through a lifting ring rope.

[0016] As a further technical solution, a bow-shaped shackle is arranged between the lifting eye and the lifting eye rope, one end of the bow-shaped shackle is connected to the lifting eye rope, and the other end of the bow-shaped shackle is connected to the lifting eye through a fastener.

[0017] The beneficial effects of the above utility model are as follows:

[0018] In the lifting structure of the utility model, an arc plate is arranged on the second horizontal part of the C-shaped lifting device, and a first polytetrafluoro plate is arranged on the arc plate. When the steel pipe is lifted, the first polytetrafluoro plate on the arc plate contacts the inner wall of the steel pipe. The polytetrafluoro plate is resistant to high temperature. Therefore, after the steel pipe is coated with anti-corrosion, it can be moved to other areas to wait for cooling, so that the anti-corrosion of the pipe is carried out continuously, thereby improving production efficiency.

[0019] In the lifting structure of the utility model, a first polytetrafluoro plate is arranged on the arc plate of the C-type lifting device, and a second polytetrafluoro plate is arranged on the vertical part of the C-type lifting device. When the steel pipe is lifted, the polytetrafluoro plate contacts the inner wall and the pipe mouth of the steel pipe, so as to protect the steel pipe and prevent the pipe mouth from deformation without damaging the coating.

[0020] The lifting structure of the utility model is a whole lifting tool composed of a C-shaped lifting device, lifting ears, lifting ropes and lifting rings. The anti-corrosion pipe is moved by using this lifting structure on the basis of a crane. During the process, the C-shaped lifting device contacts the steel pipe, and the steel pipe is no longer directly lifted by the hook, which can reduce damage to the steel pipe and ensure the quality of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a front view schematic diagram of a large-diameter anti-corrosion steel pipe hoisting structure according to one or more embodiments of the utility model;

[0023] Figure 2 It is a side view schematic diagram of a large-diameter anti-corrosion steel pipe hoisting structure according to one or more embodiments of the utility model;

[0024] Figure 3a It is a front view schematic diagram of the large-diameter anti-corrosion steel pipe hoisting structure for hoisting a steel pipe according to one or more embodiments of the utility model;

[0025] Figure 3b It is a side view schematic diagram of the large-diameter anti-corrosion steel pipe hoisting structure for hoisting a steel pipe according to one or more embodiments of the utility model;

[0026] In the figure: 1. C-type sling; 2. curved plate; 2.1. polytetrafluoroethylene plate; 3. rib plate; 4. lifting lug; 5. high-strength stud; 5.1. locking nut; 6. bow shackle; 7. lifting ring; 8. lifting ring rope; 9. steel pipe.

[0027] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0030] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] Terminology explanation section: If the terms "install", "connect", "connect", "fixed" and so on appear in the present invention, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] In a typical implementation of the present invention, Figure 1 As shown, a large-diameter anti-corrosion steel pipe lifting structure is proposed, including a C-type lifting device 1, an arc plate 2, a lifting lug 4, a lifting ring 7, a lifting ring rope 8, etc.

[0033] Among them, the C-shaped sling 1 is a C-shaped structure, and a lifting ear 4 is fixed on the top of the C-shaped sling 1. The lifting ear 4 is connected to the lifting ring rope 8, and the lifting ring rope 8 is connected to the lifting ring 7. When lifting the steel pipe, the opening of the C-shaped structure can contact the inner wall of the steel pipe 9, and the lifting ring is hung by the crane hook to lift the steel pipe.

[0034] Specifically, the C-type sling 1 includes a first horizontal portion, a vertical portion and a second horizontal portion which are connected as one body. The first horizontal portion and the second horizontal portion are arranged in parallel. The vertical portion is vertically connected to the first horizontal portion and the second horizontal portion, and the three form a C-shaped structure.

[0035] In a preferred embodiment, the first horizontal portion, the vertical portion and the second horizontal portion are an integrated structure.

[0036] A lifting lug 4 is fixedly arranged on the top of the first horizontal portion, and the top of the second horizontal portion is used to support the steel pipe.

[0037] In an optional embodiment, the length of the first horizontal portion is greater than the length of the second horizontal portion to ensure the stability of the overall structure.

[0038] In a further technical solution, an arc plate 2 is fixedly arranged on the top of the second horizontal part of the C-shaped sling 1, and the arc plate 2 is arranged perpendicular to the second horizontal part. When the steel pipe is hoisted, the arc plate 2 can fit with the inner wall of the steel pipe 9, thereby increasing the contact area between the sling and the steel pipe, making the hoisting of the steel pipe more stable.

[0039] The center of the arc plate 2 is located below the C-shaped sling 1 .

[0040] In an optional embodiment, the arc plate 2 is fixed to the top of the second horizontal portion of the C-shaped sling 1 by welding.

[0041] In a preferred embodiment, a polytetrafluoroethylene plate 2.1 is fixedly disposed on the top surface of the arc-shaped plate 2. When the steel pipe is hoisted, the polytetrafluoroethylene plate 2.1 fits against the inner wall of the steel pipe 9, thereby protecting the steel pipe and increasing the contact surface with the inner wall of the steel pipe.

[0042] Since the arc plate and the second horizontal part of the C-shaped sling are arranged vertically, the two ends of the arc plate extend to the outside of the second horizontal part and are suspended. In order to enhance the strength of the arc plate, a rib plate 3 is provided at the bottom of the arc plate 2. The rib plate 3 is fixedly connected to the bottom of the arc plate 2 and the side wall of the second horizontal part of the C-shaped sling 1, which can prevent the deformation of the arc plate.

[0043] It can be understood that, in order to achieve the effect of overall structural stability, ribs 3 are provided at the bottoms of both ends of the arc-shaped plate 2, and the two ribs are symmetrically arranged.

[0044] A polytetrafluoroethylene plate 2.1 is fixedly arranged on the side wall of the vertical part of the C-type sling 1. The polytetrafluoroethylene plate here is fixed on the inner side of the vertical part of the C-type sling. When the steel pipe is hoisted, the polytetrafluoroethylene plate here contacts the pipe mouth of the steel pipe to protect the pipe mouth.

[0045] Since the C-type sling 1 adopts a polytetrafluoroethylene plate, which can withstand temperatures up to 260°C, the steel pipe can be moved to other areas for cooling after the anti-corrosion coating is completed, and the next steel pipe anti-corrosion treatment can be continued, thereby improving work efficiency.

[0046] The lifting lug 4 is welded and fixed on the top of the C-type sling. In a preferred embodiment, multiple lifting lugs are arranged on the top of the C-type sling, and the tops of the multiple lifting lugs are connected to the same lifting ring through a lifting ring rope. During lifting, the multiple lifting lugs can bear the weight at the same time to maintain the stability of the sling.

[0047] In this embodiment, two lifting ears 4 are provided, and the two lifting ears are provided at a certain distance.

[0048] Furthermore, a bow-shaped shackle 6 is arranged between the lifting ear 4 and the lifting eye rope 8, one end of the bow-shaped shackle is connected to the lifting eye rope, and the other end of the bow-shaped shackle is connected to the lifting ear through a fastener.

[0049] Specifically, the lifting ear 4 is provided with a corresponding through hole, the end of the bow-shaped shackle is arranged opposite to the lifting ear through hole, the high-strength stud 5 passes through the through hole and the end of the bow-shaped shackle, and the high-strength stud is double-sidedly fastened by using the locking nut 5.1, so that the bow-shaped shackle 6 is fixed on the lifting ear 4.

[0050] The eye rope 8 is fixed on the eye 7, and during hoisting, the eye can be hung in the hook of the crane.

[0051] The use process of the lifting structure is:

[0052] A. Weld the arc plate 2 to the second horizontal part of the C-type sling 1, weld the rib plate 3 between the bottom of the arc plate and the side wall of the second horizontal part of the C-type sling 1, and fix the polytetrafluoroethylene plate 2.1 to the arc plate 2 and the vertical part of the C-type sling 1;

[0053] B. Weld the lifting lug 4 on the top of the C-type sling 1, and fix the lifting lug 4 to the bow-shaped shackle 6 through the high-strength stud 5 and the locking nut 5.1;

[0054] C. The bow shackle 6 is connected to the lifting ring 7 through the lifting ring rope 8, and the lifting ring is hung on the hook of the crane;

[0055] D. When hoisting the steel pipe 9, two hoisting structures are used at the same time. The two hoisting structures hook the steel pipe at both ends of the steel pipe 9 respectively. The polytetrafluoroethylene plate 2.1 of the C-type hoist contacts the inner wall and the pipe mouth of the steel pipe 9 to protect the steel pipe, and then the steel pipe is hoisted.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large-diameter anti-corrosion steel pipe hoisting structure, characterized in that: It comprises a C-type sling, a lifting ear is fixedly arranged on the top of the C-type sling, and the lifting ear is connected to the lifting ring through a lifting ring rope; the C-type sling comprises a first horizontal part and a second horizontal part which are arranged in parallel, a vertical part is connected between the first horizontal part and the second horizontal part, an arc plate is fixedly arranged on the top of the second horizontal part, and a first polytetrafluoro plate is fixedly arranged on the top surface of the arc plate.

2. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: The arc-shaped plate is arranged perpendicularly to the second horizontal portion.

3. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: The center of the arc plate is located below the C-shaped sling.

4. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: The bottom of the arc-shaped plate is provided with a rib plate, and the rib plate is fixedly connected to the bottom of the arc-shaped plate and the side wall of the second horizontal portion.

5. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: A second polytetrafluoro plate is fixedly arranged on the side wall of the vertical portion of the C-shaped sling.

6. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: The vertical portion is vertically connected to the first horizontal portion and the second horizontal portion, and the first horizontal portion, the vertical portion and the second horizontal portion are connected to form a C-shaped structure.

7. The large-diameter anticorrosive steel pipe hoisting structure according to claim 1 or 6, characterized in that: The first horizontal portion, the vertical portion and the second horizontal portion are an integrated structure.

8. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: The lifting ear is fixedly arranged on the top of the first horizontal portion, and the length of the first horizontal portion is greater than the length of the second horizontal portion.

9. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1 is characterized in that: A plurality of lifting ears are arranged on the top of the C-shaped lifting device, and the tops of the plurality of lifting ears are connected to the same lifting ring through a lifting ring rope.

10. The large-diameter anti-corrosion steel pipe hoisting structure according to claim 1, characterized in that: A bow-shaped shackle is arranged between the lifting ear and the lifting ring rope, one end of the bow-shaped shackle is connected with the lifting ring rope, and the other end of the bow-shaped shackle is connected with the lifting ear through a fastener.