Cable dragging following device suitable for ultra-thin coal seam

Abstract

The utility model discloses a cable dragging following device suitable for an ultra-thin coal seam. The cable dragging following device comprises a dragging supporting structure and a dragging traction mechanism arranged on the dragging supporting structure. The dragging supporting structure comprises a cable containing groove with an upward opening, and a drag chain supporting plate is fixed to the inner side wall of the cable containing groove. The dragging traction mechanism comprises a cable traction sliding block which is connected into the cable containing groove in a rolling mode, a set of traction connecting plates are fixed to the cable traction sliding block, a traction supporting shaft which vertically extends is fixed between the traction connecting plates, and a traction guide rotating ring is rotationally connected to the traction supporting shaft. A cable drag chain is dragged and dragged on the traction guide rotating ring; according to the utility model, a flat distributed drag chain structure is adopted, the drag chain with the structure changes the direction of the cable clamp from vertical distribution to horizontal distribution, the horizontal layout of the overall structure is simple and compact, the overall height is low, and the passing height requirement of a coal mining machine on the working face of an extremely thin coal seam can be well met.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machinery and equipment, in particular to a cable dragging and following device suitable for extremely thin coal seams. Background Art

[0002] Ultra-thin coal seams refer to coal seams with a thickness of less than 0.8m that can be mined underground. They are widely distributed in my country, boast large reserves, and offer high-quality coal. However, as recoverable resources in some mining areas are becoming increasingly depleted, mining ultra-thin coal seams has become a necessary option for continued production in these areas. However, current ultra-thin coal seam mining faces challenges such as limited operating space and a severe shortage of complete sets of intelligent mining technology and equipment.

[0003] During coal cutting, the shearer cables move with the shearer's reciprocating motion. The narrow working surface of extremely thin coal seams and the limited clearance of the shearer allow for easy cable compression, wear, and leakage. Failure to promptly adjust the shearer cable retraction and extension can hinder production, extending production time, reducing the cable's service life, and increasing operating costs. Utility Model Content

[0004] The purpose of the utility model is to provide a cable dragging and following device suitable for extremely thin coal seams, which can well meet the coal mining conditions of the extremely thin coal seam working face.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A cable dragging and following device suitable for extremely thin coal seams, comprising a dragging support structure and a dragging and traction mechanism arranged on the dragging support structure;

[0007] The dragging support structure includes a cable accommodating trough with an upward opening, a drag chain support plate fixed on the inner side wall of the cable accommodating trough, and two parallel traction slider support rails fixed on the bottom of the cable accommodating trough. The traction slider support rails are fixedly connected to the bottom of the cable accommodating trough through the heightened support plate;

[0008] The dragging and traction mechanism includes a cable pulling slider that is rotatably connected to the cable receiving groove, a group of pulling connection plates are fixed on the cable pulling slider, a vertically extending pulling support shaft is fixed between the pulling connection plates, and a pulling guide swivel is rotatably connected to the pulling support shaft;

[0009] A cable drag chain is pulled on the traction guide swivel, and the cable drag chain is composed of multiple pairs of drag chain support rings;

[0010] A plurality of slider support rollers are installed at the bottom of the cable traction slider, and the slider support rollers are rollingly supported on the top of the traction slider support track.

[0011] Preferably, the cross section of the traction slider support rail is a trapezoidal structure, the slider support roller is provided with a circle of trapezoidal grooves, and the traction slider support rail is rollingly supported in the trapezoidal grooves of the slider support rollers.

[0012] Description: The cable pulling slider moves in the cable accommodating groove in a rolling manner, which greatly reduces the running resistance.

[0013] Preferably, a plurality of slag discharge holes are provided on the side wall of the heightened support plate, and a slag discharge guide shell is fixed at the bottom of the cable receiving groove between the two heightened support plates, and both sides of the slag discharge guide shell close to the heightened support plates are concave arc structures;

[0014] The bottom of the cable accommodating groove is provided with a plurality of vertically penetrating slag discharge holes on a side away from the elevated support plates.

[0015] Note: To prevent coal blocks and dust from accumulating between the two traction slider support rails and affecting the operation of the cable traction slider, a slag discharge guide shell is provided to promptly guide the coal blocks and dust that fall between the traction slider support rails through the slag discharge hole, and finally discharge the coal blocks and dust from the slag discharge hole.

[0016] Preferably, each pair of drag chain support rings is connected by two pairs of drag chain connecting plates, and two drag chain connecting plates arranged parallel to each other are fixed at one end of the drag chain support rings close to each other, and the drag chain connecting plates have connecting shaft matching holes perpendicular to the axes of the drag chain support rings, and each pair of drag chain connecting plates are connected by a drag chain connecting shaft that is jointly rotatably connected to the connecting shaft matching holes;

[0017] Two adjacent pairs of drag chain support rings are connected through a plurality of drag chain deflection connecting rods, and both ends of the drag chain deflection connecting rods are connected to the drag chain support rings through ball hinges.

[0018] Description: The drag chain of this structure changes the distribution direction of the cable clamp from vertical to horizontal. The overall horizontal structure is simple and compact with a low overall height, which can well meet the height requirements of the coal mining machine in the extremely thin coal seam working face.

[0019] Preferably, a cable support ring is provided on the inner side of the drag chain support ring, and the cable support ring is fixedly connected to the inner side wall of the drag chain support ring through a plurality of support springs in a stretched state.

[0020] Note: Pass the cable through the cable support ring. Since the cable support ring and the drag chain support ring are flexibly connected through multiple support springs, they can absorb the vibration of the drag chain during operation and protect the cable.

[0021] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0022] 1. The utility model has a reasonable structural design and is suitable for cable dragging of coal mining machines in extremely thin coal seams. The utility model adopts a flat distributed drag chain structure. The drag chain of this structure changes the direction of the cable clamp from vertical distribution to horizontal distribution. The overall structure has a simple and compact horizontal layout and a low overall height, which can well meet the height requirements of coal mining machines in extremely thin coal seam working faces.

[0023] 2. The utility model sets a heightened support plate at the bottom of the cable accommodating groove to prevent coal blocks and dust from accumulating between the two traction slider support rails and affecting the operation of the cable traction slider. In addition, a slag discharge guide shell is set up to guide the coal blocks and dust that fall between the traction slider support rails through the slag discharge hole in time, and finally discharge the coal blocks and dust from the slag discharge hole.

[0024] 3. The cable drag chain of the utility model can simultaneously realize the rotational reversing movement (lateral movement) of the cable clamp and the lifting movement (longitudinal movement) following the coal mining machine, that is, double-degree-of-freedom movement, which effectively solves the problem that the cable clamp cannot move freely with the coal mining machine under extremely thin coal seam conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the main view of the utility model;

[0026] Figure 2 yes Figure 1 Right view of;

[0027] Figure 3 yes Figure 1 A top view of

[0028] Figure 4 This is a top view of the cable drag chain of the utility model;

[0029] Figure 5 yes Figure 4 Left view of .

[0030] In the figure, 10-drag support structure, 11-cable accommodating groove, 111-drag chain support plate, 12-traction slider support rail, 13-slider support roller, 14-increase support plate, 141-slag discharge hole, 142-slag discharge guide shell, 15-slag discharge leakage hole, 20-drag and traction mechanism, 21-cable traction slider, 211-traction connecting plate, 212-traction support shaft, 213-traction guide swivel, 22-cable drag chain, 221-drag chain support ring, 222-drag chain connecting plate, 223-connecting shaft matching hole, 224-drag chain connecting shaft, 225-drag chain deflection connecting rod, 226-cable support ring, 227-support spring. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 5The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are consistent with the up, down, left, right, front and back directions of the projection relationship of each main view or structural schematic diagram itself.

[0032] Example 1:

[0033] A cable dragging follower device suitable for extremely thin coal seams, such as Figure 1 As shown, it includes a towing support structure 10 and a towing traction mechanism 20 provided on the towing support structure 10;

[0034] The drag support structure 10 includes a cable receiving groove 11 with an upward opening. A drag chain support plate 111 is fixed to the inner side wall of the cable receiving groove 11. Two parallel traction slider support rails 12 are fixed to the bottom of the cable receiving groove 11. The traction slider support rails 12 are fixedly connected to the bottom of the cable receiving groove 11 through an increased support plate 14.

[0035] The dragging and traction mechanism 20 includes a cable pulling slider 21 that is rotatably connected to the cable receiving groove 11. A set of pulling connecting plates 211 are fixed to the cable pulling slider 21. A vertically extending pulling support shaft 212 is fixed between the pulling connecting plates 211. A pulling guide swivel 213 is rotatably connected to the pulling support shaft 212.

[0036] A cable drag chain 22 is dragged on the traction guide swivel 213 , and the cable drag chain 22 is composed of a plurality of pairs of drag chain support rings 221 connected together;

[0037] A plurality of slider support rollers 13 are installed at the bottom of the cable traction slider 21 , and the slider support rollers 13 are rollingly supported on the top of the traction slider support rail 12 .

[0038] like Figure 2 As shown, the cross section of the traction slider support rail 12 is a trapezoidal structure, and the slider support roller 13 has a circle of trapezoidal grooves. The traction slider support rail 12 is supported in the trapezoidal grooves of the slider support roller 13 in a rolling fit.

[0039] like Figure 2 As shown, a plurality of slag discharge holes 141 are provided on the side wall of the elevated support plate 14, and a slag discharge guide shell 142 is fixed to the bottom of the cable receiving groove 11 between the two elevated support plates 14. Both sides of the slag discharge guide shell 142 close to the elevated support plate 14 are concave arc structures;

[0040] The bottom of the cable receiving groove 11 is provided with a plurality of vertical slag discharge holes 15 on the side away from the raised support plates 14 .

[0041] like Figure 4As shown, each pair of drag chain support rings 221 are connected by two pairs of drag chain connecting plates 222. Two drag chain connecting plates 222 arranged parallel to each other are fixed at one end of the drag chain support rings 221 close to each other. The drag chain connecting plates 222 have connecting shaft matching holes 223 perpendicular to the axis of the drag chain support rings 221. Each pair of drag chain connecting plates 222 are connected by a drag chain connecting shaft 224 that is jointly rotatably connected to the connecting shaft matching holes 223.

[0042] Two adjacent pairs of drag chain support rings 221 are connected via a plurality of drag chain deflection connecting rods 225 , and both ends of the drag chain deflection connecting rods 225 are connected to the drag chain support rings 221 via ball hinges.

[0043] like Figure 5 As shown, a cable support ring 226 is provided inside the drag chain support ring 221 , and the cable support ring 226 is fixedly connected to the inner wall of the drag chain support ring 221 via a plurality of support springs 227 in a stretched state.

[0044] In actual application, the cable pulling slider 21 is pulled by the mechanical pulling head to move along the cable receiving groove 11, the cable is passed through the cable support ring 226, one end of the cable drag chain 22 is connected to the power supply mechanism, and the other end of the cable drag chain 22 is fixedly connected to the coal mining machine to use the cable to power the coal mining machine;

[0045] According to the operating position of the coal mining machine, the cable pulling slider 21 moves to the corresponding position of the cable receiving groove 11 to keep the entire cable drag chain 22 in an approximately taut state, thereby preventing the cable drag chain 22 from being accumulated or tangled due to the movement of the coal mining machine;

[0046] The entire cable drag chain 22 can deflect around each drag chain connecting shaft 224, thereby allowing the entire cable drag chain 22 to bypass the traction guide swivel 213 and change direction;

[0047] The entire cable drag chain 22 can also deflect around the ball hinges at both ends of the drag chain deflection connecting rod 225, so that the entire cable drag chain 22 can be offset in the vertical direction to compensate for the height difference between the coal mining machine and the cable traction slider 21 in the vertical direction.

Claims

1. A cable dragging and following device suitable for extremely thin coal seams, characterized in that: It comprises a dragging support structure (10), and a dragging and traction mechanism (20) arranged on the dragging support structure (10); The dragging support structure (10) comprises a cable receiving groove (11) with an upward opening, a drag chain support plate (111) being fixed on the inner side wall of the cable receiving groove (11), two parallel traction slider support rails (12) being fixed on the inner bottom of the cable receiving groove (11), and the traction slider support rails (12) being fixedly connected to the inner bottom of the cable receiving groove (11) via a heightened support plate (14); The dragging and traction mechanism (20) comprises a cable traction slider (21) that is rollingly connected in the cable receiving groove (11); a group of traction connecting plates (211) are fixed on the cable traction slider (21); a vertically extending traction support shaft (212) is fixed between the traction connecting plates (211); and a traction guide swivel (213) is rotatably connected to the traction support shaft (212); A cable drag chain (22) is dragged on the traction guide swivel (213), and the cable drag chain (22) is composed of a plurality of pairs of drag chain support rings (221) connected together; A plurality of slider support rollers (13) are installed at the bottom of the cable traction slider (21), and the slider support rollers (13) are rollingly supported on the top of the traction slider support rail (12).

2. The cable dragging and following device suitable for extremely thin coal seams according to claim 1, characterized in that: The cross section of the traction slider support rail (12) is a trapezoidal structure, the slider support roller (13) is provided with a circle of trapezoidal grooves, and the traction slider support rail (12) is supported in the trapezoidal groove of the slider support roller (13) by rolling fit.

3. The cable dragging and following device suitable for extremely thin coal seams according to claim 2, characterized in that: The side wall of the heightened support plate (14) is provided with a plurality of slag discharge holes (141); a slag discharge guide shell (142) is fixed at a position on the bottom of the cable receiving groove (11) between the two heightened support plates (14); and both sides of the slag discharge guide shell (142) close to the heightened support plate (14) are concave arc-shaped structures; The bottom of the cable accommodating groove (11) is located on a side away from the elevated support plate (14) and has a plurality of vertically penetrating slag discharge holes (15).

4. The cable dragging and following device suitable for extremely thin coal seams according to claim 1, characterized in that: Each pair of drag chain support rings (221) is connected by two pairs of drag chain connecting plates (222); two drag chain connecting plates (222) arranged parallel to each other are fixed to one end of the drag chain support rings (221) close to each other; the drag chain connecting plates (222) are provided with connecting shaft matching holes (223) perpendicular to the axis of the drag chain support rings (221); each pair of the drag chain connecting plates (222) are connected by a drag chain connecting shaft (224) connected to the connecting shaft matching holes (223) by common rotation; Two adjacent pairs of the drag chain support rings (221) are connected via a plurality of drag chain deflection connecting rods (225), and both ends of the drag chain deflection connecting rods (225) are connected to the drag chain support rings (221) via ball hinges.

5. The cable dragging and following device suitable for extremely thin coal seams according to claim 4, characterized in that: A cable support ring (226) is provided on the inner side of the drag chain support ring (221), and the cable support ring (226) is fixedly connected to the inner side wall of the drag chain support ring (221) via a plurality of support springs (227) in a stretched state.

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