Heavy-load chain structure of crane

Abstract

The utility model relates to the technical field of heavy-load chains, and discloses a heavy-load chain structure of a crane, which comprises a chain, the chain is formed by connecting a plurality of chain rings, two ends of the chain are connected with a first connecting ring and a second connecting ring, and two ends of the first connecting ring, two ends of the second connecting ring and two ends of the chain rings are sleeved with wear-resistant layers; the lifting hook is arranged at the bottom end of the first connecting ring, and one end of the chain is connected with a crane through a second connecting ring. The wear-resistant layers are additionally arranged at the two ends of the chain ring, meanwhile, the wear-resistant layers are made of alloy steel materials, the good wear-resistant and high-temperature-resistant effects are achieved, the wear-resistant layers are formed by tubular welding, the wear-resistant layers can be replaced in time when being worn, the chain ring is prevented from being worn, and the service life of the chain ring is prolonged; and the sleeve groove with the corresponding thickness is formed in the position where the wear-resisting layer is installed, and after the wear-resisting layer is installed, the connecting position is in a smooth state and does not protrude.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty chain technology, specifically a heavy-duty chain structure for cranes. Background Technology

[0002] Heavy-duty chains are a standard high-strength lifting device, mainly used for lifting heavy objects in industrial, shipbuilding, and dock environments. These chains are made of manganese steel and their strength is enhanced through high-temperature hardening and quenching processes.

[0003] For example, Chinese patent CN219472653U discloses an explosion-proof lifting chain, which includes single rings made of metal. The single rings are connected end to end to form a lifting chain. Each single ring includes an outer ring and a reinforcing part. The outer ring is sleeved on the outer surface of the reinforcing part. The outer ring includes a metal inner ring. Both ends of the metal inner ring are provided with connecting grooves. The two connecting grooves are respectively fixedly connected with a snap-fit ​​piece and a snap-fit ​​groove. The reinforcing part includes a reinforcing ring. The outer surface of the reinforcing ring is provided with a covering groove. This explosion-proof lifting chain increases the welding area by creating connecting grooves at the welding position of the inner metal ring. Connecting clips and interlocking grooves are fixed on the platform of the connecting grooves. When the inner metal ring is subjected to tension, the clips and grooves restrain each other to reduce the stress at the connection point of the inner metal ring, thereby improving the safety of the lifting chain. However, in traditional heavy-duty chains, the two ends of the chain links rub against each other during use, and the ends will wear down slowly over time, making them unusable. Therefore, a heavy-duty crane chain structure is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a heavy-duty crane chain structure that features an added wear-resistant layer to increase the wear resistance at both ends, thus solving the problem of wear at both ends of traditional chain links.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of increasing the wear resistance at both ends, this utility model provides the following technical solution: a heavy-duty crane chain structure, comprising:

[0008] A chain, the chain being composed of several links connected together, with a first connecting ring and a second connecting ring connected to both ends of the chain, and wear-resistant layers fitted onto the first connecting ring, the second connecting ring, and both ends of the links;

[0009] A hook is provided at the bottom of the first connecting ring, and one end of the chain is connected to the crane via a second connecting ring.

[0010] Preferably, a lifting ring is fixedly installed at the top of the hook, and the lifting ring is sleeved on one end of the first connecting ring, and the chain is connected to the hook through a section of the first connecting ring.

[0011] Preferably, both the first connecting ring and the second connecting ring have an opening on one side, and a sealing tube is provided at the opening. A stop block is fixedly installed at one end of the opening, and a connecting block is fixedly installed at the other end of the opening. One end of the sealing tube is threadedly connected to the connecting block. By rotating the sealing tube, one end of the sealing tube can be disengaged from the connecting block, thereby opening the opening and facilitating the connection of the chain.

[0012] Preferably, the wear-resistant layer is made of alloy steel and has a tubular structure, which has good wear resistance and high temperature resistance. The wear-resistant layer is welded into a tubular shape, which can be replaced in time when wear occurs, avoiding wear on the chain links and increasing the service life of the chain links.

[0013] Preferably, grooves are formed on the outer surfaces of the first connecting ring, the second connecting ring, and the chain link at both ends, and a wear-resistant layer is fitted on the outer surface of the groove. The depth of the wear-resistant layer is the same as the thickness of the groove. After the wear-resistant layer is installed, the connection is in a smooth state and there is no protrusion at the connection.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a heavy-duty chain structure for cranes, which has the following advantages:

[0016] By adding wear-resistant layers at both ends of the chain link, and using alloy steel for these layers, which offer good wear resistance and high-temperature resistance, the wear-resistant layers are made of tubular welded steel. This allows for timely replacement when wear occurs, preventing further wear on the chain link and increasing its service life. Furthermore, grooves of corresponding thickness are provided at the locations where the wear-resistant layers are installed, ensuring a smooth connection without any protrusions after installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the hook of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first connecting ring of this utility model;

[0020] Figure 4 This is an exploded view of the first connecting ring of this utility model.

[0021] In the diagram: 1. Chain; 2. First connecting ring; 21. Sealing tube; 22. Stop block; 23. Connecting block; 24. Sleeve groove; 25. Wear-resistant layer; 3. Second connecting ring; 4. Hook; 41. Lifting ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a heavy-duty chain structure for a crane, comprising a chain 1, wherein the chain 1 is composed of a plurality of chain links connected together;

[0024] In this embodiment, the two ends of the chain 1 are connected to a first connecting ring 2 and a second connecting ring 3. The first connecting ring 2, the second connecting ring 3, and both ends of the chain link are fitted with a wear-resistant layer 25. The wear-resistant layer 25 is made of alloy steel and has a tubular structure, which has good wear resistance and high temperature resistance. The wear-resistant layer 25 is welded into a tubular shape, which can be replaced in time when wear occurs, avoiding wear on the chain link and increasing the service life of the chain link.

[0025] Wherein, grooves 24 are formed on the outer surfaces of the first connecting ring 2, the second connecting ring 3 and the two ends of the chain link, and wear-resistant layer 25 is fitted on the outer surface of the groove 24. The depth of the wear-resistant layer 25 is the same as the thickness of the groove 24. After the wear-resistant layer 25 is installed, the connection is in a smooth state and there will be no protrusion at the connection.

[0026] In this example, the hook 4 is located at the bottom of the first connecting ring 2, and one end of the chain 1 is connected to the crane through the second connecting ring 3.

[0027] The top of the hook 4 is fixedly equipped with a lifting ring 41, and the lifting ring 41 is sleeved on one end of the first connecting ring 2. The chain 1 is connected to the hook 4 through a section of the first connecting ring 2.

[0028] In this example, both the first connecting ring 2 and the second connecting ring 3 have openings on one side. A sealing tube 21 is provided at the opening. A stop block 22 is fixedly installed at one end of the opening, and a connecting block 23 is fixedly installed at the other end of the opening. One end of the sealing tube 21 is threadedly connected to the connecting block 23. By rotating the sealing tube 21, one end of the sealing tube 21 can be disengaged from the connecting block 23, thereby opening the opening and facilitating the connection of the chain 1.

[0029] The working principle of this embodiment is as follows:

[0030] Wear-resistant layers 25 are added to both ends of the chain link. The wear-resistant layers 25 are made of alloy steel, which has good wear resistance and high temperature resistance. The wear-resistant layers 25 are made of tubular welding, which can be replaced in time when wear occurs, avoiding wear on the chain link and increasing the service life of the chain link. In addition, the position where the wear-resistant layers 25 are installed is provided with a corresponding thickness groove 24. After the wear-resistant layers 25 are installed, the connection is in a smooth state and there will be no protrusion at the connection.

[0031] The chain 1 is provided with a first connecting ring 2 and a second connecting ring 3 at both ends for connecting the crane and the hook. The first connecting ring 2 and the second connecting ring 3 have an opening on one side. By rotating the sealing tube 21, one end of the sealing tube 21 can be separated from the connecting block 23, thereby opening the opening and facilitating the connection of the chain 1.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty chain structure for a crane, characterized in that, include: Chain (1), the chain (1) is composed of several chain links connected together, and the two ends of the chain (1) are connected to a first connecting ring (2) and a second connecting ring (3). The first connecting ring (2), the second connecting ring (3) and the two ends of the chain links are all fitted with a wear-resistant layer (25). The hook (4) is located at the bottom of the first connecting ring (2), and one end of the chain (1) is connected to the crane via the second connecting ring (3).

2. The heavy-duty chain structure for a crane according to claim 1, characterized in that: The top of the hook (4) is fixedly installed with a lifting ring (41), and the lifting ring (41) is sleeved on one end of the first connecting ring (2).

3. The heavy-duty chain structure for a crane according to claim 1, characterized in that: Both the first connecting ring (2) and the second connecting ring (3) have openings on one side, and a sealing tube (21) is provided at the opening.

4. The heavy-duty chain structure for a crane according to claim 3, characterized in that: A stop block (22) is fixedly installed at one end of the opening, and a connecting block (23) is fixedly installed at the other end of the opening. One end of the sealing tube (21) is threadedly connected to the connecting block (23).

5. A heavy-duty crane chain structure according to claim 1, characterized in that: The wear-resistant layer (25) is made of alloy steel and has a tubular structure.

6. A heavy-duty crane chain structure according to claim 1, characterized in that: The first connecting ring (2), the second connecting ring (3) and the chain link have grooves (24) on their outer surfaces at both ends, and a wear-resistant layer (25) is fitted on the outer surface of the groove (24). The depth of the wear-resistant layer (25) is the same as the thickness of the groove (24).

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