Explosion-proof lifting chain

Abstract

The utility model provides an anti-explosion lifting chain, which relates to the technical field of lifting chains and comprises a plurality of main chain links and secondary chain links, the main chain links and the secondary chain links are connected end to end to form the lifting chain, each main chain link comprises a main chain link joint and a chain plate, a welding point is reserved at one end, far away from the main chain link joint, of each chain plate, and the welding point is welded to the main chain link joint. A clamping groove and a clamping block are arranged at the welding point, a mortise is formed between every two adjacent chain plates, every two adjacent mortises are spliced to form a mortise, and a mortise and tenon rod is inserted in each mortise. According to the utility model, the main chain link is formed by welding the two sections of standard half chain links, the plurality of clamping blocks and the clamping grooves matched with the clamping blocks are arranged at the welding points, and in addition, the tenon-and-mortise rods are fixedly inserted in the mortises, so that a simple and reliable tenon-and-mortise structure is formed, the overall connection rigidity of the main chain link is obviously improved, and the service life of the main chain link is prolonged. By means of the structure, subsequent welding work of the main chain link is facilitated, and the anti-explosion stability of the main chain link is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting chains, in particular to an explosion-proof lifting chain. Background Art

[0002] The lifting chain is a lifting device equipped on the crane. During the lifting process, the lifting chain connects the object to be lifted to the crane, allowing the crane to lift the object.

[0003] After searching, the existing patent announcement number CN219472653U discloses an explosion-proof lifting chain, including a single ring made of metal, which is connected end to end to form a lifting chain, the single ring includes an outer ring part and a reinforcement part, the outer ring part is sleeved on the outer surface of the reinforcement part, the outer ring part includes a metal inner ring, the welding positions at both ends of the metal inner ring are provided with connecting grooves, the interiors of the two connecting grooves are respectively fixedly connected with snap-in sheets and snap-in grooves, the reinforcement part includes a reinforcement ring, and the outer surface of the reinforcement ring is provided with a covering groove.

[0004] However, in actual use, the utility model is provided with multiple clamping mechanisms at the welding points for explosion-proofing, but the interconnection degree of such clamping mechanisms themselves is general, thus affecting the rigidity of the subsequent metal inner ring connection. Utility Model Content

[0005] The technical solution of the utility model is aimed at the existing technology that solves too single technical problems, and provides a solution that is significantly different from the existing technology. In order to overcome the above defects of the existing technology, the utility model provides a new solution to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an explosion-proof lifting chain, including a main chain link and a secondary chain link, a plurality of the main chain links and the secondary chain links are connected end to end to form a lifting chain, the main chain link includes a main chain link joint and a chain plate, a welding point is reserved at one end of the chain plate away from the main chain link joint, a clamping groove and a clamping block are provided at the welding point, a mortise hole is provided between two adjacent chain plates, two adjacent mortise holes are spliced ​​into a mortise groove, and a mortise and tenon rod is inserted inside the mortise groove.

[0007] Optionally, the main link is evenly divided into two standard half links, and each standard half link consists of a main link joint and two chain plates, and the snap-in grooves on the standard half links and the snap-in blocks corresponding to another adjacent standard half link are connected to each other by mortise and tenon joints.

[0008] Optionally, a main chain link buckle groove is reserved in the middle of the main chain link, and a secondary chain link buckle groove is also reserved in the middle of the secondary chain link.

[0009] Optionally, a main chain link wear-resistant layer is provided on the main chain link joint near the main chain link buckle groove.

[0010] Optionally, secondary link joints are also provided at both ends of the secondary link.

[0011] Optionally, the secondary link joint is also provided with a secondary link wear-resistant layer near the secondary link buckle groove.

[0012] Optionally, a plurality of oil grooves are provided on the main chain link joint.

[0013] Optionally, a plurality of oil grooves are arranged in a ring shape on the main chain link joint, and two ends of the oil grooves are connected to the outside of the main chain link joint and the inside of the main chain link buckle groove.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. In the utility model, the main chain link is welded by two sections of standard half-chain links, and a plurality of clamping blocks and matching clamping grooves are arranged at the welding points. In addition, the mortise and tenon rods are fixedly inserted in the mortise and tenon grooves to form a simple and reliable mortise and tenon structure, which significantly improves the overall connection rigidity of the main chain link. This structure not only facilitates the subsequent welding work of the main chain link, but also improves the explosion-proof stability of the main chain link.

[0016] 2. In the utility model, the main chain link and the secondary chain link are provided with a main chain link wear-resistant layer and a secondary chain link wear-resistant layer at the place where the two are connected. Since the wear between the chains mainly occurs at this connection point, this design significantly improves the wear resistance of the main chain link and the secondary chain link, thereby enhancing the explosion resistance of the entire chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the explosion-proof lifting chain provided by the utility model;

[0018] Figure 2 A schematic cross-sectional view of the main chain link structure of the explosion-proof lifting chain provided by the utility model;

[0019] Figure 3 A schematic side view of the secondary link structure of the explosion-proof lifting chain provided by the utility model;

[0020] Figure 4 The explosion-proof lifting chain provided by the utility model Figure 2 Enlarged view of part A.

[0021] Legend:

[0022] 1. Main chain link; 2. Secondary chain link; 3. Main chain link joint; 4. Chain plate; 5. Main chain link buckle groove; 6. Main chain link wear-resistant layer; 7. Oil groove; 8. Snap-on groove; 9. Snap-on block; 10. Tenon groove; 11. Mortise and tenon rod; 12. Secondary chain link joint; 13. Secondary chain link buckle groove; 14. Secondary chain link wear-resistant layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: an explosion-proof lifting chain, comprising a main chain link 1 and a secondary chain link 2, a plurality of main chain links 1 and secondary chain links 2 are connected end to end to form a lifting chain, the main chain link 1 comprises a main chain link joint 3 and a chain plate 4, a welding point is reserved at one end of the chain plate 4 away from the main chain link joint 3, a clamping groove 8 and a clamping block 9 are provided at the welding point, a mortise hole is provided between two adjacent chain plates 4, two adjacent mortise holes are spliced ​​into a mortise groove 10, a mortise and tenon rod 11 is inserted in the mortise groove 10, the main chain link 1 is evenly divided into two standard half-chain links, and each standard half-chain link is composed of a main chain link joint 3 and two chain plates 4, the clamping groove 8 on the standard half-chain link and the clamping block 9 corresponding to another adjacent standard half-chain link are mutually mortise-tenon connected.

[0026] In this embodiment, the main chain link 1 is welded by two sections of standard half-links, and a plurality of snap-in blocks 9 and matching snap-in grooves 8 are provided at the welding points. In addition, the mortise and tenon rods 11 are fixedly inserted in the mortise and tenon grooves 10 to form a simple and reliable mortise and tenon structure, which significantly improves the overall connection rigidity of the main chain link 1. This structure not only facilitates the subsequent welding work of the main chain link 1, but also improves the explosion-proof stability of the main chain link 1.

[0027] A main chain link buckle groove 5 is reserved in the middle of the main chain link 1, and a secondary chain link buckle groove 13 is also reserved in the middle of the secondary chain link 2. A main chain link wear-resistant layer 6 is provided near the main chain link buckle groove 5 at the main chain link joint 3, and secondary chain link joints 12 are also provided at both ends of the secondary chain link 2. A secondary chain link wear-resistant layer 14 is also provided near the secondary chain link buckle groove 13 at the secondary chain link joint 12.

[0028] In this embodiment, the main link 1 and the secondary link 2 are provided with a main link wear-resistant layer 6 and a secondary link wear-resistant layer 14 at the connection between the two. Since the wear between the chains mainly occurs at this connection point, this design significantly improves the wear resistance of the main link 1 and the secondary link 2, thereby enhancing the explosion resistance of the entire chain.

[0029] A plurality of oil grooves 7 are provided on the main chain link joint 3 . The plurality of oil grooves 7 are arranged in a ring shape on the main chain link joint 3 , and two ends of the oil grooves 7 are connected to the outside of the main chain link joint 3 and the inside of the main chain link buckle groove 5 .

[0030] In this embodiment, the lubricating oil can penetrate into the primary chain link wear-resistant layer 6 and the secondary chain link wear-resistant layer 14 through the oil groove 7, effectively reducing the friction between the two, thereby reducing wear. In addition, a certain amount of lubricating oil can be stored inside the oil groove 7, which has a certain storage function.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An explosion-proof lifting chain, comprising a main chain link (1) and a secondary chain link (2), wherein a plurality of the main chain links (1) and the secondary chain links (2) are connected end to end to form a lifting chain, characterized in that: The main chain link (1) comprises a main chain link joint (3) and a chain plate (4); a welding point is reserved at one end of the chain plate (4) away from the main chain link joint (3); a clamping groove (8) and a clamping block (9) are provided at the welding point; a mortise hole is provided between two adjacent chain plates (4); two adjacent mortise holes are spliced ​​into a mortise groove (10); a mortise and tenon rod (11) is inserted into the mortise groove (10).

2. The explosion-proof lifting chain according to claim 1, characterized in that: The main chain link (1) is evenly divided into two standard half-chain links, and each standard half-chain link is composed of a main chain link joint (3) and two chain plates (4). The clamping groove (8) on the standard half-chain link and the corresponding clamping block (9) of another adjacent standard half-chain link are mutually connected by mortise and tenon joints.

3. The explosion-proof lifting chain according to claim 1, characterized in that: A main chain link buckle groove (5) is reserved in the middle of the main chain link (1), and a secondary chain link buckle groove (13) is also reserved in the middle of the secondary chain link (2).

4. The explosion-proof lifting chain according to claim 1, characterized in that: The main chain link joint (3) is provided with a main chain link wear-resistant layer (6) near the main chain link buckle groove (5).

5. The explosion-proof lifting chain according to claim 1, characterized in that: Secondary chain link joints (12) are also provided at both ends of the secondary chain link (2).

6. The explosion-proof lifting chain according to claim 5, characterized in that: The secondary chain link joint (12) is also provided with a secondary chain link wear-resistant layer (14) near the secondary chain link buckle groove (13).

7. The explosion-proof lifting chain according to claim 1, characterized in that: A plurality of oil grooves (7) are provided on the main chain link joint (3).

8. The explosion-proof lifting chain according to claim 7, characterized in that: A plurality of oil grooves (7) are arranged in a ring shape on the main chain link joint (3), and two ends of the oil grooves (7) are connected to the outside of the main chain link joint (3) and the inside of the main chain link buckle groove (5).

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