Stability-enhanced coal cutter chain link locking device

Abstract

The utility model discloses a coal mining machine chain link locking device with enhanced stability, which comprises a snap ring and a positioning mechanism, the top and the bottom of the snap ring are respectively provided with two groups of reinforcing cover plates used for wrapping and protecting the snap ring, and a same connecting block is fixedly arranged between each group of reinforcing cover plates. The clamping ring can be wrapped and protected through the two sets of reinforcing cover plates at the top and the bottom, the overall rigidity and deformation resistance of the clamping ring are remarkably enhanced, the stability and safety of connection of the chain connecting ring are ensured, and the clamping ring can be fixed through insertion connection of the first insertion groove and the second insertion groove and cooperation of the positioning part and the positioning groove. By means of the structure, connection accuracy and reliability are guaranteed, rapid installation and fastening can be achieved through insertion connection of the insertion plates, the limiting grooves and the insertion holes and threaded connection of the locking bolts penetrating through the counter bores and the insertion plates and the threaded holes, work efficiency is improved, and meanwhile follow-up maintenance and component replacement are facilitated through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of mining chain links, in particular to a stability-enhancing coal mining machine chain link locking device. Background Art

[0002] Mining chain links are metal chain links or rings, mostly used for mining machinery transmission and traction. Mining chain links are a kind of high-strength chain, and also have a detachable function, so that they can be flexibly assembled and applied in various mining occasions, such as coal mining machines.

[0003] After searching, the utility model with the announcement number CN220227678U discloses a flat connecting link for mining. However, the connecting link has the following disadvantages during use:

[0004] Although the connection method of the screw and the nut can be convenient for fixing during use, the screw and the nut will be greatly damaged after long-term use, which affects the service life, and it is inconvenient to disassemble and assemble after wear.

[0005] Therefore, those skilled in the art provide a coal mining machine chain link locking device with enhanced stability to solve the problems raised in the above background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a coal mining machine chain ring locking device with enhanced stability.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A stability-enhancing coal mining machine chain link locking device includes a clamping ring and a positioning mechanism. Two sets of reinforcing cover plates are provided on the top and bottom of the clamping ring to wrap and protect the clamping ring. A common connecting block is fixed between each set of reinforcing cover plates. The two connecting blocks are fixedly connected by locking bolts. After installation, the locking bolts are flush with the connecting blocks.

[0009] The clamping ring includes a first U-shaped ring and a second U-shaped ring, each of which is composed of two clamping parts and a bent part, and the two corresponding clamping parts are clamped to each other for fixing the first U-shaped ring and the second U-shaped ring to form a complete clamping ring;

[0010] The positioning mechanism is provided on the clamping portion and is used to fix the first U-shaped ring and the second U-shaped ring.

[0011] As a further solution of the present invention, the positioning mechanism includes multiple first slots opened on one side of one group of clamping parts, and second slots corresponding to the first slots are opened on the inner side of the other group of clamping parts, which can be plugged into each other.

[0012] As a further solution of the present invention, a positioning portion is provided at the bottom of one group of the clamping parts, and a positioning groove corresponding to the positioning portion is opened at the bottom of another group of the clamping parts, which are flush after insertion.

[0013] As a further solution of the present invention, the reinforced cover plate includes a straight portion and an arcuate portion. The two corresponding straight portions above and below can limit and protect the clamping portion after insertion, and the arcuate portion is located on the curved portion to reinforce the curved portion.

[0014] As a further solution of the present invention, a socket is provided on one side of the two groups of the clamping parts, and a limiting groove is provided between the two groups of the reinforcing cover plates and the two connecting blocks. The same plug-in plate for positioning is inserted into the limiting groove and the socket.

[0015] As a further solution of the present invention, the top and bottom of the inserting plate are both dovetail-shaped.

[0016] As a further solution of the present invention, a threaded hole is provided on the top of the lower connecting block, and a countersunk hole is provided on the top of the upper connecting block. The locking bolt passes through the countersunk hole and the insert plate and is threadedly connected to the threaded hole.

[0017] As a further solution of the present invention, both ends of the connecting block are provided with arc-shaped grooves corresponding to the arc-shaped portion for limiting the chain.

[0018] The beneficial effects of the utility model are:

[0019] 1. The clamping ring is wrapped and protected by two sets of reinforced cover plates at the top and bottom, which significantly enhances the overall rigidity and deformation resistance of the clamping ring. This protective structure effectively prevents the clamping ring from being damaged due to uneven force or impact during the operation of the coal mining machine, ensuring the stability and safety of the link ring connection.

[0020] 2. The first U-shaped ring and the second U-shaped ring are connected to each other, which not only simplifies the installation steps, but also ensures the accuracy and reliability of the connection through the insertion of the first slot and the second slot, and the cooperation between the positioning part and the positioning slot. This high-precision connection reduces the risk of failure due to looseness or misalignment and extends the service life.

[0021] 3. By strengthening the design of the straight and curved parts of the cover plate, the clamping part after insertion can be easily limited and protected during the installation process. At the same time, the reinforcing effect of the curved part on the curved part also improves the stability of the overall structure. In addition, by plugging the plug plate into the limiting groove and the plug hole, and the locking bolt passing through the countersunk hole and the threaded connection between the plug plate and the threaded hole, quick installation and tightening are achieved, which improves work efficiency. At the same time, this design also facilitates subsequent maintenance and replacement of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural diagram of a chain link locking device for a coal mining machine with enhanced stability proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the explosion structure of a chain ring locking device for a coal mining machine with enhanced stability proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the clamping ring structure of a chain ring locking device for a coal mining machine with enhanced stability proposed by the utility model.

[0025] In the figure: 1. Snap ring; 2. Reinforcement cover; 3. Connecting block; 4. Locking bolt; 5. Insert plate; 6. First U-shaped ring; 7. Second U-shaped ring; 8. Straight portion; 9. Arc portion; 10. Limiting groove; 11. Threaded hole; 12. Countersunk hole; 15. Insertion hole; 16. Snap-fit ​​portion; 17. Bend portion; 18. First slot; 19. Positioning portion; 20. Second slot; 21. Positioning slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", and "set" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0027] Reference Figure 1-Figure 3 A coal mining machine chain link locking device with enhanced stability includes a clamping ring 1, which is composed of a first U-shaped ring 6 and a second U-shaped ring 7. Both rings are composed of two clamping parts 16 and a bent part 17. During the manufacturing process, it is ensured that the corresponding two clamping parts 16 can be accurately matched and clamped to each other to form a complete clamping ring 1 structure.

[0028] Next, in order to enhance the strength and stability of the clamping ring 1, two sets of reinforcing cover plates 2 are set at the top and bottom of the clamping ring. Each set of reinforcing cover plates 2 consists of a straight portion 8 and an arc-shaped portion 9. The straight portion 8 is used to limit and protect the clamping portion 16 after insertion, while the arc-shaped portion 9 covers the curved portion 17 to provide additional reinforcement effect.

[0029] The connecting blocks 3 are fixedly installed between the reinforcing cover plates 2. The two connecting blocks 3 are fastened together by locking bolts 4. The locking bolts 4 are flush with the connecting blocks 3 after being fixed, so as to avoid greater wear during use.

[0030] A socket 15 is provided on one side of the two sets of clamping parts 16, and a limiting groove 10 is provided between the two sets of reinforcing cover plates 2 and the two connecting blocks 3. The same inserting plate 5 for positioning is inserted into the limiting groove 10 and the socket 15, which can fix the two sets of clamping parts 16 and the two sets of reinforcing cover plates 2.

[0031] Specifically, a threaded hole 11 is provided at the top of the lower connecting block 3, and a countersunk hole 12 is provided at the top of the upper connecting block 3. The locking bolt 4 passes through the countersunk hole 12 and the inserting plate 5 inserted in the limiting groove 10 and the insertion hole 15, and is finally threadedly connected with the threaded hole 11 to achieve tightening. The top and bottom of the inserting plate 5 are designed to be dovetail-shaped to ensure that it is firmly inserted in the limiting groove 10 and the insertion hole 15 and is not easy to fall off.

[0032] In order to achieve precise fixation of the first U-shaped ring 6 and the second U-shaped ring 7, a positioning mechanism is designed, and a plurality of first slots 18 are opened on one side of one group of clamping parts 16, and second slots 20 corresponding to the first slots 18 are opened on the inner side of the other group of clamping parts 16. When the two groups of clamping parts 16 are clamped with each other, the first slots 18 and the second slots 20 can be plugged into each other to form a stable connection. In addition, a positioning part 19 is provided at the bottom of one group of clamping parts 16, and a positioning groove 21 corresponding to the positioning part 19 is opened at the bottom of the other group of clamping parts 16. After plugging in, the positioning part 19 and the positioning groove 21 are tightly matched to ensure that the two groups of clamping parts 16 remain flush after plugging in, thereby further enhancing the stability of the connection.

[0033] Both ends of the connecting block 3 are also designed with arc grooves corresponding to the arc portion 9. These arc grooves are used to limit the chain to prevent the chain from deflecting or falling off during use, thereby improving the safety and reliability of the entire locking device.

[0034] Working principle: During installation, pass the first U-shaped ring 6 and the second U-shaped ring 7 through the two chain links respectively, and then connect the first slot 18 with the second slot 20 to make the first U-shaped ring 6 and the second U-shaped ring 7 form a whole, and then clamp the two reinforcing cover plates 2 on the upper and lower parts of the first U-shaped ring 6 and the second U-shaped ring 7 respectively, and make the straight part 8 clamp on the clamping part 16, and the arc-shaped part 9 clamp on the curved part 17. After the clamping is completed, pass the plug-in plate 5 through the limiting groove 10 and the insertion hole 15 until the mounting hole on the plug-in plate 5 corresponds to the threaded hole 11, and then insert the locking bolt 4 into the countersunk hole 12 and the mounting hole on the plug-in plate 5, and tighten it into the threaded hole 11, which can fasten the first U-shaped ring 6 and the second U-shaped ring 7 together and reinforce them through the two reinforcing cover plates 2.

[0035] In this application, the structures and connection relationships that are not described in detail are all prior art, and their structures and principles are well-known technologies and will not be described in detail here.

[0036] 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 technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chain link locking device for a coal mining machine with enhanced stability, characterized in that: It comprises a clamping ring (1) and a positioning mechanism, wherein two groups of reinforcing cover plates (2) are provided at the top and bottom of the clamping ring (1) for wrapping and protecting the clamping ring (1), and a same connecting block (3) is fixedly provided between each group of reinforcing cover plates (2), and the two connecting blocks (3) are fixedly connected by a locking bolt (4), and after installation, the locking bolt (4) is flush with the connecting block (3); The clamping ring (1) comprises a first U-shaped ring (6) and a second U-shaped ring (7), wherein the first U-shaped ring (6) and the second U-shaped ring (7) are each composed of two clamping portions (16) and a bent portion (17), and the two corresponding clamping portions (16) are clamped to each other to fix the first U-shaped ring (6) and the second U-shaped ring (7) to form a complete clamping ring (1); The positioning mechanism is arranged on the clamping portion (16) and is used to fix the first U-shaped ring (6) and the second U-shaped ring (7).

2. A stability-enhancing coal mining machine chain link locking device according to claim 1, characterized in that: The positioning mechanism comprises a plurality of first slots (18) provided on one side of one group of the clamping parts (16), and a second slot (20) corresponding to the first slots (18) is provided on the inner side of the other group of the clamping parts (16), and the second slots (20) can be plugged into each other.

3. The stability-enhancing coal mining machine chain link locking device according to claim 2, characterized in that: The bottom of one group of the clamping parts (16) is provided with a positioning part (19), and the bottom of the other group of the clamping parts (16) is provided with a positioning groove (21) corresponding to the positioning part (19), and they are flush after plugging.

4. The stability-enhancing coal mining machine chain link locking device according to claim 1, characterized in that: The reinforcing cover plate (2) comprises a straight portion (8) and an arcuate portion (9); the two corresponding straight portions (8) above and below can limit and protect the plugged-in clamping portion (16); and the arcuate portion (9) is located on the curved portion (17) and is used to reinforce the curved portion (17).

5. The stability-enhancing coal mining machine chain link locking device according to claim 1, characterized in that: One side of the two groups of the clamping parts (16) is provided with a socket (15), and a limiting groove (10) is provided between the two groups of the reinforcing cover plates (2) and the two connecting blocks (3). The same inserting plate (5) for positioning is inserted into the limiting groove (10) and the socket (15).

6. The stability-enhancing coal mining machine chain link locking device according to claim 5, characterized in that: The top and bottom of the inserting plate (5) are both in a dovetail shape.

7. The stability-enhancing coal mining machine chain link locking device according to claim 1, characterized in that: A threaded hole (11) is provided on the top of the lower connecting block (3), and a countersunk hole (12) is provided on the top of the upper connecting block (3). The locking bolt (4) passes through the countersunk hole (12) and the insert plate (5) and is threadedly connected to the threaded hole (11).

8. The stability-enhancing coal mining machine chain link locking device according to claim 7, characterized in that: Both ends of the connecting block (3) are provided with arc-shaped grooves corresponding to the arc-shaped portion (9) for limiting the position of the chain.

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