Wear-resistant lifting hook for engineering construction

Abstract

A wear-resistant lifting hook for engineering construction comprises a suspension connecting part (1), a lifting hook body (2) and a lifting hook head (3) which are sequentially connected, a wear-resistant strip (4) is installed on the inner side surface of the lifting hook body (2) in an embedded mode, the wear-resistant strip (4) has the radian matched with the inner side surface of the lifting hook body (2), and in addition, the wear-resistant strip (4) is arranged on the lifting hook head (3). The wear-resistant strip (4) is in metallurgical connection with the lifting hook body (2), the wear-resistant strip (4) is tightly attached to the embedded surface of the wear-resistant strip (4) to form an integrated wear-resistant structure, and a reinforced wear-resistant layer (5) is arranged on the surface of the wear-resistant strip (4). According to the wear-resistant lifting hook for engineering construction, the strength and rigidity of the working part of the lifting hook are ensured by embedding the wear-resistant strip and coating the reinforced wear-resistant layer, the construction safety and the construction efficiency can be improved, and the wear-resistant lifting hook adapts to severe construction environments, has longer service life, can bear high-strength lifting operation for a long time, and is not easy to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction equipment, in particular to a wear-resistant hook for engineering construction. Background Art

[0002] In modern construction projects, especially those involving large-scale building demolition, renovation, and infrastructure development, hoisting operations are an essential and crucial component. As the core component of hoisting equipment, the hook directly connects the lifting equipment to the object being hoisted. Its performance stability and durability are directly related to the safety and efficiency of construction.

[0003] However, traditional construction hooks face numerous challenges in long-term use. First, lifting operations often require the loading of heavy, irregularly shaped construction materials and waste materials, such as scrap steel, concrete blocks, and large pipes. These materials exert strong impact and friction on the hooks during the lifting process, causing rapid wear and tear on the hook surface, and even cracks or breakage, posing a serious threat to construction safety.

[0004] Secondly, the construction environment is often complex and changeable. Harsh conditions such as high temperature, humidity, and corrosive gases can further accelerate the corrosion and aging process of hooks, reducing their service life. In addition, frequent lifting operations subject the hooks to repeated bending and tensile stresses. This alternating stress is also one of the main causes of hook fatigue failure.

[0005] In summary, traditional construction hooks have significant deficiencies in wear resistance, corrosion resistance, and fatigue resistance, making them difficult to meet the modern construction requirements for efficient, safe, and durable lifting equipment. Therefore, it is particularly important to develop a wear-resistant construction hook with excellent wear resistance that can withstand the effects of harsh construction environments. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a wear-resistant hook for engineering construction, which is of great significance in improving construction safety, improving construction efficiency, adapting to harsh construction environments, extending service life and reducing maintenance costs.

[0007] The technical solution of the utility model is as follows:

[0008] A wear-resistant hook for engineering construction includes a suspension connection part, a hook body and a hook head connected in sequence, a wear-resistant strip is installed in an embedded manner on the inner surface of the hook body, and the wear-resistant strip has a curvature adapted to the inner surface of the hook body, and the wear-resistant strip and the hook body are metallurgically connected, the wear-resistant strip fits tightly to the surface in which it is embedded to form an integrated wear-resistant structure, and an enhanced wear-resistant layer is provided on the surface of the wear-resistant strip.

[0009] As described above, the wear-resistant hook for engineering construction, the metallurgical connection method is casting connection or welding.

[0010] The wear-resistant hook for engineering construction as described above, wherein the wear-resistant strip is made of alloy material.

[0011] As described above, the wear-resistant hook for engineering construction has a hardness of the wear-resistant strip not less than HRC50.

[0012] As described above, the wear-resistant hook for engineering construction, the reinforced wear-resistant layer has a portion exceeding the surface of the wear-resistant strip in the width direction and / or the extension length direction.

[0013] In the wear-resistant hook for engineering construction as described above, the reinforced wear-resistant layer is a hard alloy spray layer with a thickness of 0.5 mm to 2 mm.

[0014] As described above, the wear-resistant hook for engineering construction has a surface hardness of the reinforced wear-resistant layer reaching HV1000 or above.

[0015] In the wear-resistant hook for engineering construction as described above, the wear-resistant strip extends from the inner surface of the hook body to the inner surface of the hook head.

[0016] As described above, the wear-resistant hook for engineering construction, the wear-resistant strip extends in a discontinuous manner in the length direction.

[0017] As described above, the wear-resistant hook for engineering construction has a suspension connection portion, a hook body and a hook head that are cast from low-alloy steel.

[0018] The beneficial effects of the present invention are:

[0019] 1. This utility model discloses a wear-resistant hook for construction projects. This wear-resistant hook improves construction safety. Construction safety is a primary consideration in projects such as large-scale building demolition, renovation, and infrastructure construction. Traditional hooks, due to their insufficient wear resistance, are prone to cracking or breaking during the lifting process due to rapid wear. This not only damages the objects being hoisted but can also cause serious safety accidents, such as falling objects injuring people and damaging surrounding facilities. This hook significantly reduces the safety risks caused by hook failure and improves overall construction safety.

[0020] 2. The utility model discloses a wear-resistant hook for construction projects, which improves construction efficiency: Efficient lifting operations are key to accelerating project progress and reducing construction costs. Traditional hooks, due to their poor wear resistance, require frequent replacement or repair, which not only increases downtime but also increases manpower and material costs. Wear-resistant hooks, with their longer service life and lower failure rate, can reduce the number of replacements and repairs, thereby ensuring the continuity and efficiency of lifting operations and improving overall construction efficiency.

[0021] 3. The utility model discloses a wear-resistant hook for engineering construction, which is suitable for harsh construction environments: Modern engineering construction environments are complex and changeable, including high temperatures, humidity, corrosive gases and other harsh conditions. These environmental factors will accelerate the corrosion and aging process of the hook, not only reducing its service life, but also further reducing its wear resistance and mechanical strength due to corrosion and aging. The wear-resistant hook adopts surface wear-resistant materials and coating technology. Commonly used wear-resistant materials have better corrosion resistance and can effectively resist the influence of harsh construction environments, maintain their good physical and mechanical properties, and ensure stable and reliable operation in various environments.

[0022] 4. This utility model discloses a wear-resistant hook for construction projects, which has an extended service life. The hook significantly improves its wear resistance by embedding wear-resistant strips and applying a reinforced wear-resistant layer. Furthermore, it is cast from high-quality materials such as high-strength low-alloy steel to ensure the hook's strength and rigidity. These measures work together to ensure the hook has a longer service life, allowing it to withstand high-intensity lifting operations for extended periods without damage.

[0023] 5. The utility model discloses a wear-resistant hook for construction projects. This hook reduces maintenance costs: Due to its longer service life and lower failure rate, its maintenance costs are also relatively low. Compared to the frequent replacement and repair costs of traditional hooks, the lower maintenance costs of the wear-resistant hook can save construction companies a significant amount of money. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0025] In the attached figure:

[0026] Figure 1 This is a schematic structural diagram of a wear-resistant hook for engineering construction according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic structural diagram of another wear-resistant hook for engineering construction according to an embodiment of the present utility model.

[0028] The components represented by the reference numerals in the figure are:

[0029] 1. Suspension connection part, 2. Hook body, 3. Hook head, 4. Wear-resistant strip, 5. Reinforced wear-resistant layer. DETAILED DESCRIPTION

[0030] Example 1

[0031] like Figure 1 As shown, a wear-resistant hook for engineering construction includes a suspension connection part 1, a hook body 2 and a hook head 3 connected in sequence.

[0032] The structure of the above-mentioned hook is prior art and is the most commonly used hook structure.

[0033] In order to ensure good mechanical properties and working strength, the suspension connection part 1, the hook body 2 and the hook head 3 in the present invention are integrally cast from low alloy steel.

[0034] Low alloy steel is the material of existing technology. High-strength low alloy steel has high yield strength and tensile strength (not less than 450MPa), and can withstand large loads without plastic deformation or fracture. This high strength characteristic ensures the stability and safety of the hook during the lifting process.

[0035] In addition to high strength, low alloy steel also has good toughness, which allows it to maintain structural integrity when subjected to impact or vibration. This toughness helps reduce stress concentration and fatigue damage in the hook during lifting.

[0036] In addition, low alloy steel also has good machinability and weldability, which can meet various processing and connection requirements in the hook manufacturing process.

[0037] However, the pursuit of toughness of the hook body material, such as low alloy steel, prevents it from reaching the ultimate in hardness and wear resistance. Therefore, the present embodiment mainly improves the wear resistance of the existing hook structure.

[0038] The first improvement is that in this embodiment, a wear-resistant strip 4 is installed on the inner surface of the hook body 2 in an embedded manner.

[0039] like Figure 1As shown, the wear-resistant strip 4 in this embodiment has a curvature adapted to the inner surface of the hook body 2, and in order to achieve a firm connection, it is preferred that the wear-resistant strip 4 and the hook body 2 are metallurgically connected, and the wear-resistant strip 4 fits tightly to the surface in which it is embedded to form an integrated wear-resistant structure.

[0040] Regarding the selection of the embedding position of the wear-resistant strip 4, after precise analysis combined with production experience, it was determined that the wear-resistant strip 4 should be embedded at least on the inner surface of the hook body 2. This position is the area where the hook is most susceptible to wear during the lifting process. Therefore, choosing to embed the wear-resistant strip at this position can directly and effectively improve the wear resistance of the hook.

[0041] The above-mentioned wear-resistant strip 4 can be made of a wear-resistant material with higher wear resistance than ordinary low-alloy steel in the existing technology, preferably selected from high-hardness alloy materials. It can be a full alloy material or a ceramic reinforced alloy material, but non-metallic materials are not excluded. However, the overall requirement is that it can be metallurgically combined with the hook body and be better than the hook body in wear resistance, which can reduce the wear of the working part of the hook and increase the service life of the hook body.

[0042] Here, as representatives of preferred high-hardness alloy materials, tungsten-cobalt alloy and chromium-molybdenum alloy are listed. These materials have extremely high hardness (not less than HRC50), wear resistance and impact resistance, and can maintain stable performance under extreme working conditions. At the same time, these materials also have corrosion resistance, which can ensure that the working part of the hook can still maintain good condition in a humid or corrosive environment.

[0043] As a particularly recommended manufacturing method in this embodiment, the metallurgical connection between the wear-resistant strip 4 and the hook body is a casting connection. This is because during the casting connection, the hook body material cast into the mold can fully wrap the wear-resistant strip 4. Moreover, if the matrix melting point of the wear-resistant strip 4 is not much higher than that of the hook body material, but is close to that of the hook body material, the hook body material may also melt part of the material on the surface of the wear-resistant strip 4, so that the metallurgical fusion of the connection part is more complete.

[0044] It should be noted that, in this embodiment, the wear strip 4 is not required to be continuous in the length direction. Although not shown in the figure, in an optional implementation, the wear strip 4 extends in a discontinuous manner in the length direction.

[0045] The advantage of the wear-resistant strip 4 extending discontinuously in the length direction is that there are more contact points between the hook body material and the wear-resistant strip, thereby improving the bonding ability of the two materials.

[0046] In this embodiment, a wear-resistant strip 4 is embedded in the inner surface of the hook body 2. The wear-resistant strip and the hook body are firmly connected through metallurgy to form an integrated wear-resistant structure. This design not only enhances the wear resistance of the hook, but also improves the overall stability of the structure. The wear-resistant strip 4 is made of high-hardness alloy material in the existing technology to ensure that the hardness is not less than HRC50, giving the hook working surface (friction surface with the wire rope) excellent wear resistance and impact resistance, while also improving corrosion resistance, and can maintain stable performance under extreme working conditions.

[0047] Continue to see Figure 1 As a further improvement of this embodiment, an enhanced wear-resistant layer 5 is provided on the surface of the wear-resistant strip 4.

[0048] The enhanced wear-resistant layer 5 in this embodiment is a hard alloy spray layer with a thickness of 0.5 mm to 2 mm.

[0049] A reinforced wear-resistant layer 5 is provided on the outer surface of the wear-resistant strip 4, and the coating thickness is between 0.5 mm and 2 mm, ensuring that the wear-resistant layer is thick enough to resist wear while avoiding the increase in cost and difficulty in processing caused by excessive thickness.

[0050] The surface hardness of the enhanced wear-resistant layer 5 is preferably above HV1000, which can effectively resist the wear and scratches of the hook caused by the material during the lifting process.

[0051] The enhanced wear-resistant layer 5 is made by cemented carbide powder spraying technology. The material powder used for spraying can be selected from one or more of tungsten carbide and chromium carbide. Commercially available cemented carbide spraying materials can be directly selected, and it is preferred to ensure that the surface hardness after spraying reaches HV1000 or above.

[0052] It should be noted that the enhanced wear-resistant layer 5 is not necessarily applied completely according to the surface shape of the wear-resistant strip 4, but can have a portion exceeding the surface of the wear-resistant strip 4 in the width direction and / or extension length direction to cover at least a portion of the hook body material.

[0053] The coating is evenly covered on the outer surface of the wear-resistant strip 4 through the spraying process to form a dense wear-resistant layer. The wear-resistant layer can effectively resist the wear and scratches of the hook caused by the material during the lifting process, thereby extending the service life of the hook. The powder material is strictly screened and cleaned before spraying to ensure that its purity and particle size distribution meet the coating performance requirements. High-pressure gas or plasma spraying technology is used to evenly spray the mixed cemented carbide powder on the outer surface of the wear-resistant strip 4. The spraying parameters such as spraying speed, spraying distance, spraying temperature, etc. need to be precisely controlled during the spraying process to ensure good bonding between the coating and the wear-resistant strip and the uniformity of the coating. Through multiple spraying passes and appropriate heat treatment processes, the coating can reach the required thickness and hardness requirements.

[0054] After spraying, the enhanced wear-resistant layer 5 is subjected to strict quality inspection. The inspection contents include the thickness, hardness, bonding strength, wear resistance and corrosion resistance of the coating. Metallographic analysis, microhardness test, scratch test and salt spray test are used to comprehensively evaluate whether the performance of the coating meets the design requirements.

[0055] In addition to the above examples, in some other cases, the enhanced wear-resistant layer 5 can also be obtained by modifying a part of the thickness of the wear-resistant strip 4, such as at least one of a carburizing layer and a nitriding layer. The surface wear resistance of some alloy materials can be greatly improved after carburizing or nitriding treatment.

[0056] In summary, the construction hook with enhanced wear resistance proposed in this embodiment has the following significant advantages:

[0057] 1. Significantly improved wear resistance: Through integrated wear-resistant structural design, application of high-performance wear-resistant materials and enhanced wear-resistant layer technology, this technical solution significantly improves the wear resistance of the hook, which enables the hook to maintain good performance during long-term, high-intensity lifting operations and reduces the maintenance and replacement costs caused by wear.

[0058] 2. Enhanced structural stability: The wear strips and the hook body are firmly connected through metallurgy to form an integrated wear-resistant structure. This structure not only improves the stability of the wear strips, but also enhances the stability of the entire hook, improving safety during the lifting process.

[0059] 3. Reduce maintenance costs: Due to the improved wear resistance and enhanced structural stability, the hook of this technical solution reduces the number and cost of repairs caused by wear and loosening during long-term use, which reduces the maintenance cost of the construction unit and improves work efficiency.

[0060] 4. Improve construction safety: The improvement of wear resistance and the enhancement of structural stability make the hook safer and more reliable during the lifting process, which reduces the risk of safety accidents caused by hook failure and improves the safety of the construction site.

[0061] Example 2

[0062] This embodiment is different from the casting connection process recommended in Example 1. Instead, the wear-resistant strip 4 and the hook body are connected by welding.

[0063] Welding is also an effective form of achieving metallurgical fusion, and the welding process is suitable for local repair or modification. The strength and sealing of the weld can be ensured through precise welding parameter control.

[0064] Therefore, the utility model firmly embeds the wear-resistant strip 4 into the hook body through the casting and welding processes provided in the two embodiments, and makes it fit tightly to the surface in which it is embedded. This design not only improves the stability of the wear-resistant strip, but also enhances the overall wear resistance of the hook, so that the hook can still maintain good performance during long-term use.

[0065] Example 3

[0066] like Figure 2 As shown, this embodiment is different from embodiment 1 in that the wear-resistant strip 4 extends from the inner surface of the hook body 2 to the inner surface of the hook head 3. Similarly, the reinforced wear-resistant layer 5 can also extend from the inner surface of the hook body 2 to the inner surface of the hook head 3.

[0067] This embodiment shows the flexibility of the position extension of the wear strip 4 (and the enhanced wear layer 5) in the present invention. According to this idea, the wear strip 4 can also continue to extend to the outside of the hook head 3.

[0068] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant hook for engineering construction, comprising a suspension connection portion (1), a hook body (2) and a hook head (3) connected in sequence, characterized in that: A wear-resistant strip (4) is embedded in the inner surface of the hook body (2), and the wear-resistant strip (4) has a curvature adapted to the inner surface of the hook body (2). In addition, the wear-resistant strip (4) and the hook body (2) are metallurgically connected. The wear-resistant strip (4) fits tightly to the surface in which it is embedded to form an integrated wear-resistant structure. An enhanced wear-resistant layer (5) is provided on the surface of the wear-resistant strip (4).

2. A wear-resistant hook for engineering construction according to claim 1, characterized in that: The metallurgical connection is made by casting or welding. When the connection is made by casting, the hook body material cast into the mold can fully wrap the wear-resistant strip (4).

3. A wear-resistant hook for engineering construction according to claim 1 or 2, characterized in that: The wear-resistant strip (4) is made of alloy material.

4. A wear-resistant hook for engineering construction according to claim 3, characterized in that: The hardness of the wear-resistant strip (4) is not less than HRC50.

5. The wear-resistant hook for engineering construction according to claim 1, characterized in that: The reinforced wear-resistant layer (5) has a portion exceeding the surface of the wear-resistant strip (4) in the width direction and / or the extension length direction.

6. A wear-resistant hook for engineering construction according to claim 1 or 5, characterized in that: The enhanced wear-resistant layer (5) is a hard alloy spray layer with a thickness of 0.5 mm to 2 mm.

7. The wear-resistant hook for engineering construction according to claim 6, characterized in that: The surface hardness of the enhanced wear-resistant layer (5) reaches HV1000 or above.

8. The wear-resistant hook for engineering construction according to claim 1, characterized in that: The wear-resistant strip (4) extends from the inner surface of the hook body (2) to the inner surface of the hook head (3).

9. The wear-resistant hook for engineering construction according to claim 1, characterized in that: The suspension connection part (1), the hook body (2) and the hook head (3) are cast from low alloy steel.

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