Anti-torsion assembly for connecting traction chain of coal mining machine

Abstract

The utility model relates to an anti-torsion assembly for connecting a traction chain of a coal mining machine, and belongs to the technical field of coal mining machines. The connecting piece is used for connecting a traction chain; the rotating shaft is used for eliminating torque of the traction chain; and the fixing assembly is used for fixing the anti-torsion assembly on the coal mining machine. The anti-torsion assembly rotates along with rotation of the traction chain, shear stress generated by torsion of the traction chain is completely eradicated, breakage of the traction chain is avoided, and the possibility of accidents of safety production is reduced.

Description

Technical Field

[0001] The utility model relates to an anti-torsion assembly for connecting a traction chain of a shearer, belonging to the technical field of shearers. Background Art

[0002] A shearer is one of the important devices for realizing the mechanization and modernization of coal mine production, and is a large and complex system integrating machinery, electricity and hydraulics. A shearer generally consists of a cutting unit, a loading unit, a traveling unit (traction unit), a motor, an operation control system and auxiliary devices, etc. The shearer is connected to a traction device through a traction chain to realize the movement of its position. The traction device usually has a long traction distance. During the traction process, due to unbalanced forces, the traction chain twists and knots, and at the same time, the shear force inside the chain increases sharply. When it exceeds the breaking load, the chain breakage accident will be triggered, which is very likely to cause safety accidents. Summary of the Utility Model

[0003] To solve the problems existing in the prior art, the anti-torsion assembly rotates with the rotation of the traction chain, eliminating the shear stress generated by the torsion of the traction chain, avoiding the breakage of the traction chain, and reducing the possibility of safety production accidents.

[0004] The technical solution adopted by the utility model is an anti-torsion assembly for connecting a traction chain of a shearer, including:

[0005] A connecting piece for connecting the traction chain;

[0006] A rotating shaft for eliminating the torque of the traction chain;

[0007] A fixing assembly for connecting the anti-torsion assembly to the shearer.

[0008] Further, the A end of the rotating shaft is connected to the connecting piece, and the fixing assembly is installed at the B end of the rotating shaft. Under the action of force, the rotating shaft can rotate with the rotation of the connecting piece.

[0009] Further, one end of the connecting piece is provided with a hanging ring for connecting the traction chain, and the other end of the connecting piece is fixedly connected to the rotating shaft.

[0010] Further, the shape of the hanging ring is U-shaped.

[0011] Further, the rotating shaft passes through the shearer connecting block and is fixed by the fixing assembly, and a washer is also provided between the shearer connecting block and the fixing assembly.

[0012] Further, the B end of the rotating shaft is provided with annular steps distributed at intervals.

[0013] Further, the fixing component includes a snap ring, an oil storage groove, a sleeve, and a stop nut. The snap ring is sleeved on the circular ring step, the sleeve is sleeved outside the snap ring, the oil storage groove is located between the sleeve and the snap ring, an oil injection hole with a hole cover is provided on the outer wall of the sleeve, the oil injection hole is communicated with the oil storage groove, and the stop nut is used to connect the sleeve to the rotating shaft.

[0014] Further, a gasket is also provided between the stop nut and the sleeve.

[0015] The utility model discloses an anti-torsion component for connecting a traction chain of a shearer. The beneficial effect is that by arranging a connecting piece and a rotating shaft, the anti-torsion component rotates along with the rotation of the traction chain, eliminating the shear stress generated by the torsion of the traction chain, avoiding the fracture of the traction chain, and reducing the possibility of production safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for describing the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The figure shows the structural schematic diagram of Embodiment 1 of the present invention;

[0018] Figure 2 The figure shows the structural schematic diagram of the rotating shaft and the connecting piece in Embodiment 1;

[0019] Figure 3 The figure shows the enlarged schematic diagram of the installation of the shearer connection block in Embodiment 1.

[0020] As shown in the figure: 1. Connecting piece; 2. Rotating shaft; 3. Hanging ring; 4. Washer; 5. Circular ring step; 6. Snap ring; 7. Oil storage groove; 8. Sleeve; 9. Stop nut; 10. Oil injection hole; 11. Gasket; 21. Shearer connection block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0022] To further understand the content of the present utility model, this technical solution will be further elaborated below in conjunction with specific implementation manners.

[0023] Embodiment 1: As Figures 1 to 3 shown, this embodiment provides an anti-torsion assembly for connecting the traction chain of a shearer, including a connecting member 1, a rotating shaft 2 and a fixing assembly. Among them, the connecting member 1 is used to connect the traction chain; specifically, one end of the connecting member 1 is provided with a hanging ring 3 for connecting with the traction chain. The shape of the hanging ring 3 is U-shaped, which is convenient for the traction chain to pass through and be hung for connection. The other end of the connecting member 1 is fixedly connected to the rotating shaft 2.

[0024] The rotating shaft 2 is used to eliminate the torque of the traction chain; the A end of the rotating shaft 2 is connected to the connecting member 1, and the fixing assembly is installed at the B end of the rotating shaft 2. When the traction chain pulls the hanging ring 3, the traction chain twists to drive the hanging ring 3 to twist, and then the rotating shaft 2 rotates as the connecting member 1 twists. Thus, the traction chain will not break due to torsion during the traction process.

[0025] The B end of the rotating shaft 2 is provided with annular steps 5 distributed at intervals. The fixing assembly is used to fix the anti-torsion assembly to the shearer. Specifically, the fixing assembly includes a snap ring 6, an oil storage groove 7, a sleeve 8, and a lock nut 9. Among them, the snap ring 6 is sleeved on the annular step 5, and the snap ring 6 and the annular step 5 are in concave-convex fit. The sleeve 8 is sleeved outside the snap ring 6. The oil storage groove 7 is located between the sleeve 8 and the snap ring 6. The outer wall of the sleeve 8 is provided with an oil injection hole 10 with a hole cover, and the oil injection hole 10 is communicated with the oil storage groove 7. By injecting lubricating oil into the oil injection hole 10, friction and rust are reduced to ensure the lubrication effect; a washer 4 is also provided between the shearer connection block 21 and the sleeve 8, and a gasket 11 is also provided between the lock nut 9 and the sleeve 8. The washer 4 and the gasket 11 play a role in increasing the contact area and buffering.

[0026] In the actual operation process, first, the B end of the rotating shaft 2 passes through the shearer connecting block 21, and then the fixing assembly is installed on the rotating shaft 2, so that the shearer connecting block 21 is located between the sleeve 8 and the connecting piece 1. Subsequently, one end of the traction chain is hung on the hanging ring 3 of the connecting piece 1. When the traction chain rotates, it drives the hanging ring 3, the rotating shaft 2, and the fixing assembly to rotate. The rotating shaft 2 can rotate flexibly relative to the shearer connecting block 21, eliminating the shear stress generated by the torsion of the traction chain, avoiding the fracture of the traction chain, and reducing the possibility of production safety accidents.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-torsion component for connecting the traction chain of a shearer, characterized in that: A connecting piece (1) for connecting the traction chain; A rotating shaft (2) for eliminating the torque of the traction chain; A fixing component for connecting the anti-torsion component to the shearer; Wherein the A end of the rotating shaft (2) is connected to the connecting piece (1), the fixing component is installed at the B end of the rotating shaft (2), and under the action of force, the rotating shaft (2) can rotate with the rotation of the connecting piece (1). One end of the connecting piece (1) is provided with a hanging ring (3) connected to the traction chain, the other end of the connecting piece (1) is fixedly connected to the rotating shaft (2), the rotating shaft (2) passes through the shearer connecting block (21) and is fixed by the fixing component, and a washer (4) is further provided between the shearer connecting block (21) and the fixing component. The B end of the rotating shaft (2) is provided with annular steps (5) distributed at intervals. The fixing component includes a snap ring (6), an oil storage groove (7), a sleeve (8), and a stop nut (9). The snap ring (6) is sleeved on the annular step (5), the sleeve (8) is sleeved outside the snap ring (6), the oil storage groove (7) is located between the sleeve (8) and the snap ring (6), the outer wall of the sleeve (8) is provided with an oil injection hole (10) with a hole cover, the oil injection hole (10) is communicated with the oil storage groove (7), and the stop nut (9) is used to connect the sleeve (8) to the rotating shaft (2).

2. The anti-twist assembly for connecting the traction chain of a shearer according to claim 1, characterized in that, The hanging ring (3) is U-shaped.

3. The anti-twist assembly for connecting the traction chain of a shearer according to claim 1, characterized in that, A gasket (11) is further provided between the stop nut (9) and the sleeve (8).

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