Rust-proof tool for carbon steel lifting lug of large storage tank

Abstract

The utility model discloses a rust-proof tool for a carbon steel lifting lug of a large-scale storage tank, and relates to the field of carbon steel lifting lugs of large-scale storage tanks. The lifting lug is used for preventing the lifting lug from being abraded and rusted, a lifting lug hole is formed in the lifting lug in the thickness direction of the lifting lug, and the lifting lug comprises a first side face annular plate, a second side face annular plate and an inner hole bushing ring; the first side face annular plate and the second side face annular plate are each provided with a through hole corresponding to a lifting lug hole, the inner hole bushing ring is of a tubular structure and is transversely arranged in the lifting lug hole, the outer wall of the inner hole bushing ring is tightly attached to the inner wall of the lifting lug hole, and the outer wall of the inner hole bushing ring is fixedly connected with the lifting lug hole. The first side face annular plate and the second side face annular plate are connected to the two side faces of the lifting lug correspondingly. Before equipment is painted, the device is installed on a carbon steel or low alloy steel lifting lug and painted together with the equipment. When the equipment is hoisted, the first side surface annular plate, the second side surface annular plate and the inner hole bushing ring isolate the contact between a shackle and a steel wire rope for hoisting and the surface of carbon steel or low alloy steel, so that the damage to paint at the part of the carbon steel or low alloy steel is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of carbon steel lifting lugs for large storage tanks, in particular to a rust-proof tooling for carbon steel lifting lugs for large storage tanks. Background Art

[0002] With the centralization and large-scale development of domestic equipment, vertical storage tanks, towers, and other pressurized and non-pressurized vessels are becoming increasingly larger. Loading, unloading, and installation require lifting through lug holes. When the equipment is installed and lifted, the lifting ropes can damage the paint inside the lug holes and on both sides of the lug surface. Repairing the damaged paint is difficult, and high-altitude work using scaffolding or hanging baskets is time-consuming and labor-intensive. This poses safety risks, and the quality of the paint repairs does not meet the equipment's rust-proofing requirements. Over time, exposed to wind and sun, the damaged paint on the lugs will rust, leaving streaks of rust hanging from high altitudes, detracting from the overall appearance of the equipment. While stainless steel lugs can address the rust issue, they are costly. Furthermore, stainless steel lugs and large carbon steel equipment raise issues related to welding and welding procedure qualification. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the shortcomings of the above-mentioned existing technologies and provide a rust-proof tooling for carbon steel lifting lugs of large storage tanks. By adding stainless steel bushings to the lug holes and both sides of the carbon steel lifting lugs, the problem of rust caused by paint damage to the carbon steel lifting lugs during lifting is solved. After the large equipment is lifted, there is no need to polish or repaint the damaged paint parts.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A rust-proof tooling for the carbon steel lifting ear of a large storage tank is used to prevent the lifting ear from wear and rust. A lifting ear hole is opened on the lifting ear along the thickness direction of the lifting ear, including a first side ring plate, a second side ring plate and an inner hole lining ring; the first side ring plate and the second side ring plate are both provided with through holes corresponding to the lifting ear holes, and the inner hole lining ring is a tubular structure. The inner hole lining ring is horizontally arranged in the lifting ear hole, and the outer wall of the inner hole lining ring is tightly attached to the inner wall of the lifting ear hole. The first side ring plate and the second side ring plate are respectively connected to the two side faces of the lifting ear.

[0006] The utility model discloses a rust-proof tool for carbon steel lifting lugs of large storage tanks. The tool is installed on the carbon steel or low-alloy steel lifting lugs before the equipment is painted, and is painted together with the equipment. When the equipment is hoisted, the first side ring plate, the second side ring plate, and the inner hole liner ring isolate the lifting shackle and the wire rope from contact with the carbon steel or low-alloy steel surface, effectively preventing damage to the paint on the carbon steel or low-alloy steel parts. Even if the paint on the first side ring plate, the second side ring plate, and the inner hole liner ring is damaged, it will not rust and there is no need for repainting. In this way, rust marks on the equipment caused by rust on the lifting lug parts are avoided.

[0007] As a further preferred embodiment of the present invention, the first side ring plate and the second side ring plate are both welded to two side surfaces of the lifting ear, and the inner hole lining ring is welded into the lifting ear hole.

[0008] The first and second side ring plates and inner bore liner are welded to the lifting lugs to prevent wear and rust at the contact points between the lifting rope and the lifting lug. Welding offers the advantages of maintaining component cross-section and conserving steel: no additional connecting material is required during welding, thus saving steel. It also offers simple construction and ease of processing: weldments can be directly welded to each other, reducing the installation and adjustment of connectors. Excellent sealing and high rigidity: Welded joints offer excellent sealing and high rigidity, making them suitable for structures requiring high strength and sealing.

[0009] As a further preferred embodiment of the present invention, the top and sides of the first side ring plate are provided with slots, and the top and sides of the second side ring plate are provided with corresponding buckles, and the slots and buckles are correspondingly engaged and connected. The corresponding slots and buckles on the first and second side ring plates facilitate direct connection between the first and second side ring plates, protecting the sides and top of the lifting lugs. They also facilitate positioning of the first and second side ring plates during welding, preventing them from slipping during welding.

[0010] As a further preferred embodiment of the present invention, the inner hole lining ring is further provided with a limit slot. The inner hole lining ring is provided with a limit slot, and the steel wire rope passes through the inner hole lining ring and is connected to the lifting lug. The setting of the limit slot allows the steel wire rope to be mainly concentrated in the limit slot, reducing wear on other parts, and the thickness of the upper half of the first side ring plate and the second side ring plate is greater than the thickness of the lower half.

[0011] As a further preferred embodiment of the present invention, a positioning column is provided on the top of the first side ring plate, a corresponding positioning hole is opened on the second side ring plate, and the first side ring plate and the second side ring plate are connected through the positioning column and the positioning hole.

[0012] The first and second side ring plates are equipped with corresponding positioning posts and positioning holes to facilitate direct connection between the first and second side ring plates, protecting the sides and top of the lifting lugs. They also facilitate positioning of the first and second side ring plates during welding, preventing them from slipping during welding.

[0013] As a further preferred embodiment of the present invention, one end of the inner bore liner is welded to the first or second side ring plate. Traditionally, during installation, the inner bore liner must first be welded into the lifting lug hole, and then the first and second side ring plates are positioned and welded to either side of the lifting lug plate. However, by welding one end of the inner bore liner to the first or second side ring plate, the first or second side ring plate welded to the inner bore liner is automatically positioned after the inner bore liner is welded, eliminating the need to align the first or second side ring plate with the lifting lug side plate, thus saving installation steps and time.

[0014] As a further preferred embodiment of the present invention, the inner hole liner includes a first curved member and a second curved member, the first curved member and the second curved member being nested and connected, and the first curved member being retractably connected to the second curved member. The first curved member and the second curved member are nested and connected, and the interior of the second curved member is a cavity, and the first curved member is retractably accommodated in the cavity of the second curved member, which can accommodate ear holes of different sizes and shapes, thereby increasing the versatility of the present invention.

[0015] As a further preferred embodiment of the present invention, the top surfaces of the first and second side ring plates are flush with the top surfaces of the lifting lugs, and the bottom surfaces are positioned 3-5 cm below the lifting lug holes. To prevent the lifting lug side plates from being scratched when the wire rope naturally droops, the applicant has repeatedly tested and determined that the bottoms of the first and second side ring plates are positioned 3-5 cm below the lifting lug holes, thereby saving material and achieving a scratch-resistant effect.

[0016] As a further preferred embodiment of the present invention, the first side ring plate, the second side ring plate and the inner hole lining ring are all made of stainless steel.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model's large-scale storage tank carbon steel lifting lug rust-proofing fixture is installed on the carbon steel or low-alloy steel lifting lug before the equipment is painted, and is painted along with the equipment. When the equipment is hoisted, the first side ring plate, the second side ring plate, and the inner hole liner isolate the lifting shackle and wire rope from contact with the carbon steel or low-alloy steel surface, effectively preventing damage to the paint on the carbon steel or low-alloy steel. Even if the paint on the first side ring plate, the second side ring plate, and the inner hole liner is damaged, it will not rust, and there is no need for repainting. This prevents rust marks on the equipment caused by rust on the lifting lug.

[0019] 2. The inner hole lining ring of the utility model includes a first arc-shaped part and a second arc-shaped part. The first arc-shaped part and the second arc-shaped part are nested and connected. The interior of the second arc-shaped part is a cavity. The first arc-shaped part can be telescopically accommodated in the cavity of the second arc-shaped part, which can adapt to ear holes of different sizes and shapes, thereby increasing the versatility of the utility model.

[0020] 3. The first and second side ring plates are equipped with corresponding positioning posts and positioning holes to facilitate direct connection between the first and second side ring plates, protecting the sides and top of the lifting lugs. They also facilitate positioning of the first and second side ring plates during welding, preventing them from slipping during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 It is a side sectional view of the utility model;

[0024] Figure 4 It is a schematic diagram of the first curved member and the second curved member of the present invention;

[0025] Figure 5 This is a structural diagram of the inner hole liner ring of the utility model;

[0026] Figure 6 This is a schematic diagram of the second side ring plate structure of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the first side ring plate of the utility model.

[0028] The components include: 1. lifting ear; 2. first side ring plate; 3. second side ring plate; 4. inner hole lining ring; 5. limiting slot; 6. buckle; 7. first arc-shaped part; 8. second arc-shaped part. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0030] In the description of the present invention, it should be understood that the terms "left side," "right side," "upper," "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Terms such as "first" and "second" do not indicate the importance of a component and therefore should not be construed as limiting the present invention. The specific dimensions used in this embodiment are merely for illustrative purposes and do not limit the scope of protection of the present invention.

[0031] like Figure 1-7As shown, a large-scale storage tank carbon steel lifting ear anti-rust tooling is used to prevent the lifting ear 1 from wear and rust. The lifting ear 1 is provided with a lifting ear hole along the thickness direction of the lifting ear 1, including a first side ring plate 2, a second side ring plate 3 and an inner hole lining ring 4; the first side ring plate 2 and the second side ring plate 3 are both provided with through holes corresponding to the lifting ear holes, and the inner hole lining ring 4 is a tubular structure, and the inner hole lining ring 4 is horizontally arranged in the lifting ear hole, and the outer wall of the inner hole lining ring 4 is tightly attached to the inner wall of the lifting ear hole, and the first side ring plate 2 and the second side ring plate 3 are respectively connected to the two sides of the lifting ear 1.

[0032] The utility model discloses a large-scale storage tank carbon steel lifting lug anti-rust tooling, which is installed on the carbon steel or low alloy steel lifting lug 1 before the equipment is painted, and is painted together with the equipment. When the equipment is hoisted, the first side ring plate 2, the second side ring plate 3 and the inner hole liner 4 isolate the contact between the lifting shackle and the wire rope and the carbon steel or low alloy steel surface, effectively avoiding damage to the paint on the carbon steel or low alloy steel parts. Even if the paint on the first side ring plate 2, the second side ring plate 3 and the inner hole liner 4 is damaged, it will not rust and there is no need to repaint. In this way, rust marks on the equipment caused by rust on the lifting lug 1 are avoided.

[0033] The first side ring plate 2 and the second side ring plate 3 are welded to the two sides of the lifting ear 1, and the inner hole lining ring 4 is welded into the lifting ear hole. The first side ring plate 2, the second side ring plate 3 and the inner hole lining ring 4 are welded to the lifting ear 1 by welding to prevent wear and rust from occurring at the contact position between the lifting rope and the lifting ear 1. The advantages of welding are that it does not weaken the cross-section of the component and saves steel: no additional connecting materials are required during the welding process, thereby saving the use of steel. Simple structure and easy processing: weldments can be directly welded to each other, reducing the installation and adjustment work of the connectors. Good sealing and high rigidity: the welded joint has good sealing and high rigidity, and is suitable for structures that require high strength and sealing.

[0034] The first side ring plate 2 has slots on its top and sides, and the second side ring plate has corresponding buckles on its top and sides. These slots and buckles engage in a corresponding snap-fit connection. The corresponding slots and buckles on the first and second side ring plates 2, 3 facilitate direct connection between the first and second side ring plates 2, 3, protecting both sides and the top of the lifting lug 1. They also facilitate positioning of the first and second side ring plates 2, 3 during welding, preventing them from slipping.

[0035] The inner hole lining ring 4 is also provided with a limit slot 5. The inner hole lining ring 4 is provided with a limit slot 5, and the steel wire rope passes through the inner hole lining ring 4 and is connected to the lifting lug 1. The setting of the limit slot 5 allows the steel wire rope to be mainly concentrated in the limit slot 5, reducing wear on other positions, and the thickness of the upper half of the first side ring plate 2 and the second side ring plate 3 is greater than the thickness of the lower half.

[0036] The first side ring plate 2 is provided with a positioning post at the top, and the second side ring plate is provided with a corresponding positioning hole. The first side ring plate 2 and the second side ring plate 3 are connected via the positioning post and positioning hole. The corresponding positioning post and positioning hole on the first and second side ring plates 2 and 3 facilitates the direct connection of the first and second side ring plates 2 and 3, protecting the sides and top of the lifting lug 1. It also facilitates positioning of the first and second side ring plates 2 and 3 during welding, preventing them from slipping during welding.

[0037] One end of the inner hole backing ring 4 is welded to the first side ring plate 2 or the second side ring plate 3. Originally, during installation, the inner hole backing ring 4 would first be welded into the lifting ear hole, and then the first side ring plate 2 and the second side ring plate 3 would be positioned and welded to the sides of the lifting ear 1 plate. However, by first welding one end of the inner hole backing ring 4 to the first side ring plate 2 or the second side ring plate 3, the first side ring plate 2 or the second side ring plate 3 welded to the inner hole backing ring 4 is automatically positioned after the inner hole backing ring 4 is welded, eliminating the need to align it with the side plate of the lifting ear 1, thus saving installation steps and time.

[0038] The inner hole liner ring 4 includes a first arc-shaped member 7 and a second arc-shaped member 8. The first arc-shaped member 7 and the second arc-shaped member 8 are nested and connected, and the first arc-shaped member 7 is retractably connected to the second arc-shaped member 8. The first arc-shaped member 7 and the second arc-shaped member 8 are nested and connected, and the interior of the second arc-shaped member 8 is a cavity. The first arc-shaped member 7 is retractably accommodated in the cavity of the second arc-shaped member 8, which can adapt to ear holes of different sizes and shapes, thereby increasing the versatility of the utility model.

[0039] The top surfaces of the first and second side ring plates 2 and 3 are flush with the top surface of the lifting lug 1, and their bottom surfaces are located 3-5 cm below the lifting lug hole. To prevent the lifting lug side plates from being scratched when the wire rope sags naturally, the bottoms of the first and second side ring plates 2 and 3 are located 3-5 cm below the lifting lug hole, saving material while achieving a scratch-proof effect on the lower half. The first and second side ring plates 2, 3, and inner hole lining ring 4 are all made of stainless steel, ensuring that they will not rust when worn.

[0040] The working principle of this utility model is:

[0041] The inner bore liner 4 is placed into the hole of a carbon steel or low-alloy steel lifting lug, with the inner diameter of the lifting lug hole appropriately aligned with the outer diameter of the inner bore liner 4. The first and second side ring plates 2 and 3 are mounted on either side of the lifting lug 1, positioned using the outer diameter of the inner bore liner 4 and resting against the side of the lifting lug 1. The inner ring of the through-hole of the side ring plate is welded to the inner bore liner 4, while the outer ring is welded to the side of the lifting lug 1. To ensure consistent paint finish on the equipment, this anti-rust fixture for the carbon steel lifting lug 1 is installed on the carbon steel or low-alloy steel lifting lug 1 before the equipment is painted, and is painted along with the equipment. During lifting, the stainless steel bushing isolates the lifting shackle and wire rope from contact with the carbon steel or low-alloy steel surface, effectively preventing paint damage on the carbon steel or low-alloy steel. While the paint on the anti-rust fixture may be damaged, it will not rust, eliminating the need for repainting. This prevents rust marks on the equipment caused by rust on the lifting lug 1.

[0042] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. A rust-proof tool for carbon steel lifting lugs of large storage tanks, used to prevent the lifting lugs (1) from being worn and rusted, wherein the lifting lugs (1) are provided with lifting lug holes along the thickness direction of the lifting lugs (1), characterized in that: It comprises a first side ring plate (2), a second side ring plate (3) and an inner hole lining ring (4); the first side ring plate (2) and the second side ring plate (3) are both provided with through holes corresponding to the lifting ear holes, the inner hole lining ring (4) is a tubular structure, the inner hole lining ring (4) is transversely arranged in the lifting ear hole, the outer wall of the inner hole lining ring (4) is tightly attached to the inner wall of the lifting ear hole, and the first side ring plate (2) and the second side ring plate (3) are respectively connected to the two sides of the lifting ear (1).

2. The large-scale storage tank carbon steel lifting lug anti-rust tooling according to claim 1 is characterized by: The first side ring plate (2) and the second side ring plate (3) are both welded to the two side surfaces of the lifting ear (1), and the inner hole lining ring (4) is welded into the lifting ear hole.

3. The rust-proof tooling for carbon steel lifting lugs of large storage tanks according to claim 1 is characterized by: The top and side of the first side ring plate (2) are provided with a card slot, and the top and side of the second side ring plate (3) are provided with a corresponding card buckle (6), and the card slot and the card buckle (6) are correspondingly engaged and connected.

4. The rust-proof tooling for carbon steel lifting lugs of large storage tanks according to claim 1 is characterized by: The inner hole lining ring (4) is also provided with a limiting groove (5).

5. The large-scale storage tank carbon steel lifting lug anti-rust tooling according to claim 1 is characterized by: A positioning column is provided on the top of the first side ring plate (2), and a corresponding positioning hole is opened on the second side ring plate (3). The first side ring plate (2) and the second side ring plate (3) are connected via the positioning column and the positioning hole.

6. The large-scale storage tank carbon steel lifting lug anti-rust tooling according to claim 1 is characterized by: One end of the inner hole lining ring (4) is welded to the first side ring plate (2) or the second side ring plate (3).

7. The large-scale storage tank carbon steel lifting lug anti-rust tooling according to claim 1 is characterized by: The inner hole lining ring (4) comprises a first arc-shaped part (7) and a second arc-shaped part (8), wherein the first arc-shaped part (7) and the second arc-shaped part (8) are nested and connected, and the first arc-shaped part (7) is telescopically connected to the second arc-shaped part (8).

8. The rust-proof tooling for carbon steel lifting lugs of large storage tanks according to claim 1, characterized in that: The top surfaces of the first side ring plate (2) and the second side ring plate (3) are flush with the top surface of the lifting ear (1), and the bottom surfaces are arranged 3-5 cm below the lifting ear hole.

9. The large-scale storage tank carbon steel lifting lug anti-rust tooling according to claim 1 is characterized by: The first side ring plate (2), the second side ring plate (3) and the inner hole lining ring (4) are all made of stainless steel.

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