Adjustable anchor rod supporting structure in mining roadway

Abstract

The utility model relates to the technical field of roadway supporting, in particular to an adjustable anchor rod supporting structure in a mining roadway, which comprises a plurality of supporting plates, anchor rods and anchor rod trays which are arranged on the inner walls of the two sides of the mining roadway, and anchoring holes for the anchor rods to be inserted are formed in the two side walls of the mining roadway. The top of the rear side wall of the anchor rod tray is hinged to the top of the front wall of the supporting plate, and an angle locking mechanism is arranged between the bottom of the rear side wall of the anchor rod tray and the bottom of the front wall of the supporting plate. And a locking nut matched with the external thread of the anchor rod is arranged at the outer end of the anchor rod. After the anchor rod tray is rotated to the angle perpendicular to the anchor rod, the anchor rod tray is locked through the angle locking mechanism, so that it can be ensured that after the anchor rod and the anchor rod tray are locked through the locking nut, the anchor rod tray does not generate shear force on the anchor rod, the anchor rod is prevented from being broken, and meanwhile, the anchor rod tray is prevented from being damaged. And it can be ensured that the anchor rod tray can effectively transmit the locking torque generated by the locking nut.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to an adjustable anchor support structure in a mining tunnel. Background Art

[0002] Mining tunnels are a general term for various underground spaces that are excavated in different rocks along different directions, at different inclinations, in different sections and lengths, and serve different ranges and for different purposes. When mining tunnels are supported by anchor bolts, the anchor bolt holes are not perpendicular to the rock layer, so the anchor bolt tray cannot be flush or close to the top rock layer, and the anchor bolt tray cannot effectively transmit the locking torque generated by the nut, resulting in a very low effective torque force of the anchor bolt, and the initial anchor force of the anchor bolt cannot meet the requirements, which is prone to delamination failure at this position; the anchor bolt is subjected to shear force from the anchor bolt tray while being subjected to tension, which is prone to causing the anchor bolt to break.

[0003] Based on the above problems, the utility model proposes an adjustable anchor support structure in a mining tunnel. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an adjustable anchor support structure in a mining tunnel. By hingedly connecting the top of the anchor tray with the top of the support plate, the anchor tray is rotated to an angle perpendicular to the anchor, and then the anchor tray is locked by an angle locking mechanism. This ensures that after the locking nut locks the anchor and the anchor tray, the anchor tray will not generate shear force on the anchor, thereby avoiding the breakage of the anchor. At the same time, it can also ensure that the anchor tray can effectively transmit the locking torque generated by the locking nut, thereby increasing the effective torque force of the anchor and meeting the initial anchor force requirement of the anchor.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is:

[0006] The utility model discloses an adjustable anchor support structure in a mining tunnel, comprising a plurality of support plates, anchors and anchor trays arranged on the inner walls on both sides of the mining tunnel, anchor holes for inserting anchors are arranged on the two side walls of the mining tunnel, the inner ends of the anchor holes are arranged obliquely downward, the support plates are in a square structure, and a first waist-shaped hole connected to the anchor hole is arranged in the middle thereof; the anchor tray is in a square structure, the top of the rear side wall of the anchor tray is hinged to the top of the front wall of the support plate, and an angle locking mechanism is arranged between the bottom of the rear side wall of the anchor tray and the bottom of the front wall of the support plate; a second waist-shaped hole for the anchor to pass through is arranged in the middle of the anchor tray, and a locking nut matching its external thread is arranged at the outer end of the anchor.

[0007] The side walls of the adjacent support plates in the same row are connected, and the bottom end surfaces and top end surfaces of the adjacent support plates in the same column are connected.

[0008] The widths of the first kidney-shaped hole and the second kidney-shaped hole are equal to the outer diameter of the anchor bolt.

[0009] The angle locking mechanism includes a first connecting plate, a second connecting plate, a welding nut and a connecting bolt. The inner ends of the two first connecting plates are fixed to both sides of the bottom of the front wall of the support plate. A first circular arc hole for the connecting bolt to pass through is provided in the middle of the first connecting plate; the inner ends of the two second connecting plates are fixed to both sides of the bottom of the rear wall of the anchor bolt tray. A second circular arc hole for the connecting bolt to pass through is provided in the middle of the second connecting plate. The cross-sections of the first connecting plate and the second connecting plate are both partial circular ring-shaped structures with the hinge point between the support plate and the anchor bolt tray as the center and equal diameters; the cross-sections of the first circular arc hole and the second circular arc hole are both arc structures with the hinge point between the support plate and the anchor bolt tray as the center and equal diameters. The first connecting plate and the second connecting plate are threadedly connected and locked with the welding nut after the screw of the connecting bolt passes through the first circular arc hole and the second circular arc hole.

[0010] The two first connecting plates are respectively arranged on the outer sides of the two second connecting plates, and the inner walls of the two first connecting plates can contact the outer walls of the two second connecting plates.

[0011] The welding nut is fixed to the outer ends of the inner walls of the two second connecting plates. The aperture of the welding nut is equal to the width of the second circular arc hole, and the threaded hole of the welding nut coincides with the outer end of the second circular arc hole.

[0012] The beneficial effects of the present invention are as follows:

[0013] (1) In the present invention, the top end of the anchor bolt tray is hinged to the top end of the support plate. After rotating the anchor bolt tray to an angle perpendicular to the anchor bolt, the anchor bolt tray is locked by the angle locking mechanism, which can ensure that after the locking nut locks the anchor bolt and the anchor bolt tray, the anchor bolt tray will not generate a shearing force on the anchor bolt, avoiding the breakage of the anchor bolt. At the same time, it can also ensure that the anchor bolt tray can effectively transmit the locking torque generated by the locking nut, thereby increasing the effective torque force of the anchor bolt and meeting the initial anchoring force requirement of the anchor bolt. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a schematic diagram of a partial structure of the present invention;

[0016] Figure 3 is Figure 2 a sectional view of;

[0017] Figure 4Schematic diagram of the anchor bolt tray rotating to the upper side when the anchor bolt is inserted into the anchoring hole in the present utility model;

[0018] Figure 5 Schematic diagram of the anchor bolt tray rotating and adjusting the angle in the present utility model.

[0019] In the figure: 1 Mining roadway, 2 Support plate, 3 Anchor bolt, 4 Anchor bolt tray, 5 Anchoring hole, 6 First waist-shaped hole, 7 Angle locking mechanism, 8 Second waist-shaped hole, 9 Locking nut, 71 First connecting plate, 72 Second connecting plate, 73 Welding nut, 74 Connecting nut, 75 First circular arc hole, 76 Second circular arc hole. Specific embodiments

[0020] The following further describes the present utility model:

[0021] Please refer to Figures 1-5 ,

[0022] The present utility model discloses an adjustable anchor bolt support structure in a mining roadway, including a plurality of support plates 2, anchor bolts 3 and anchor bolt trays 4 arranged on the inner walls of both sides of the mining roadway 1. Anchoring holes 5 for inserting the anchor bolts 3 are provided on the inner walls of both sides of the mining roadway 1. The inner ends of the anchoring holes 5 are inclined downward. The support plates 2 are of a square structure, and a first waist-shaped hole 6 communicating with the anchoring holes 5 is provided in the middle thereof; the anchor bolt tray 4 is of a square structure, the top of the rear side wall thereof is hinged to the top of the front wall of the support plate 2, and an angle locking mechanism 7 is provided between the bottom of the rear side wall of the anchor bolt tray 4 and the bottom of the front wall of the support plate 2; a second waist-shaped hole 8 for the anchor bolt 3 to pass through is provided in the middle of the anchor bolt tray 4, and a locking nut 9 matching the external thread thereof is provided at the outer end of the anchor bolt 3. By hinging the top end of the anchor bolt tray 4 to the top end of the support plate 2, after rotating the anchor bolt tray 4 to an angle perpendicular to the anchor bolt 3, the anchor bolt tray 4 is locked by the angle locking mechanism 7, which can ensure that after the locking nut 9 locks the anchor bolt 3 and the anchor bolt tray 4, the anchor bolt tray 4 will not generate a shearing force on the anchor bolt 3, avoiding the anchor bolt 3 from breaking. At the same time, it can also ensure that the anchor bolt tray 4 can effectively transmit the locking torque generated by the locking nut 9, thereby increasing the effective torque force of the anchor bolt and meeting the initial anchoring force requirement of the anchor bolt.

[0023] Furthermore, the side walls of the adjacent support plates 2 in the same row are connected, and the bottom end faces and top end faces of the adjacent support plates 2 in the same column are connected, ensuring that all the support plates 2 are connected, which can protect the inner wall of the mining roadway 1 and prevent the inner wall soil from scattering.

[0024] Furthermore, the widths of the first waist-shaped hole 6 and the second waist-shaped hole 8 are equal to the outer diameter of the anchor rod 3. While ensuring that the anchor rod 3 can pass through the first waist-shaped hole 6 and the second waist-shaped hole 8, it is convenient for the locking nut 9 to lock the anchor rod tray 4 when screwed into the outer end of the anchor rod 3, without passing through the second waist-shaped hole 8.

[0025] Furthermore, the angle locking mechanism 7 includes a first connecting plate 71, a second connecting plate 72, a welding nut 73 and a connecting bolt 74. The inner ends of the two first connecting plates 71 are fixed to both sides of the bottom of the front wall of the support plate 2. A first circular arc hole 75 for the connecting bolt 74 to pass through is provided in the middle of the first connecting plate 71; the inner ends of the two second connecting plates 72 are fixed to both sides of the bottom of the rear wall of the anchor rod tray 4. A second circular arc hole 76 for the connecting bolt 74 to pass through is provided in the middle of the second connecting plate 72. The cross-sections of the first connecting plate 71 and the second connecting plate 72 are both partial circular ring structures with the hinge point between the support plate 2 and the anchor rod tray 4 as the center and equal diameters; the cross-sections of the first circular arc hole 75 and the second circular arc hole 76 are both circular arc structures with the hinge point between the support plate 2 and the anchor rod tray 4 as the center and equal diameters. The first connecting plate 71 and the second connecting plate 72 are locked by screwing the screw rod of the connecting bolt 74 through the first circular arc hole 75 and the second circular arc hole 76 and then threadedly connecting with the welding nut 73. The specific working process: when the anchor rod tray 4 rotates to a suitable angle, the outer end of the second connecting plate 72 rotates with the anchor rod tray 4. Since the cross-sections of the first connecting plate 71 and the second connecting plate 72 are both partial circular ring structures with the hinge point between the support plate 2 and the anchor rod tray 4 as the center and equal diameters, and the cross-sections of the first circular arc hole 75 and the second circular arc hole 76 are both circular arc structures with the hinge point between the support plate 2 and the anchor rod tray 4 as the center and equal diameters, at this time, a part of the outer end of the second circular arc hole 76 coincides with the first circular arc hole 75. By passing the connecting bolt 74 through the coincident part and threadedly connecting the welding nut 73 with the connecting bolt 74, the first connecting plate 71 and the second connecting plate 72 can be locked, that is, the angle locking of the anchor rod tray 4 is completed.

[0026] Furthermore, the two first connecting plates 71 are respectively arranged on the outer sides of the two second connecting plates 72. The inner walls of the two first connecting plates 71 can contact the outer walls of the two second connecting plates 72. After fixing the welding nut 73 to the outer end of the inner wall of the second connecting plate 72, it is convenient for the staff to rotate the connecting bolt 74 from the outer side with a larger space more simply, reducing the labor intensity and improving the work efficiency.

[0027] Further, the welding nut 73 is fixed to the outer ends of the inner walls of the two second connecting plates 72. The aperture of the welding nut 73 is equal to the width of the second arc-shaped hole 76, and the threaded hole of the welding nut 73 coincides with the outer end of the second arc-shaped hole 76. By fixing the welding nut 73 to the outer ends of the inner walls of the second connecting plates 72, it is possible for the operator to more conveniently adjust the angle of the bolt tray 4. When the bolt tray 4 rotates to an angle perpendicular to the bolt 3, the operator only needs to pass the screw rod of the connecting bolt 74 through the first arc-shaped hole 75 and the second arc-shaped hole 76, and then tighten the connecting bolt 74 and the welding nut 73 by threading to ensure that the bolt tray 4 cannot rotate.

[0028] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or any direct or indirect application in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An adjustable bolt support structure in a mining roadway, characterized in that: It includes a number of support plates (2), anchor bolts (3) and anchor bolt trays (4) provided on the inner walls on both sides of the mining roadway (1). Anchor holes (5) for inserting the anchor bolts (3) are provided on the side walls of the mining roadway (1). The inner ends of the anchor holes (5) are inclined downward. The support plate (2) has a square structure, and a first waist-shaped hole (6) communicating with the anchor hole (5) is provided in the middle thereof. The anchor bolt tray (4) has a square structure. The top of the rear side wall is hinged to the top of the front wall of the support plate (2). An angle locking mechanism (7) is provided between the bottom of the rear side wall and the bottom of the front wall of the support plate (2). A second waist-shaped hole (8) for the anchor bolt (3) to pass through is provided in the middle of the anchor bolt tray (4). A locking nut (9) matching the external thread is provided at the outer end of the anchor bolt (3).

2. The adjustable bolt support structure in a mining roadway according to claim 1, wherein: The side walls of the adjacent support plates (2) in the same row are connected, and the bottom end faces and top end faces of the adjacent support plates (2) in the same column are connected.

3. The adjustable bolt support structure in a mining roadway according to claim 1, wherein: The widths of the first waist-shaped hole (6) and the second waist-shaped hole (8) are equal to the outer diameter of the anchor bolt (3).

4. An adjustable bolt support structure in a mining roadway according to claim 3, characterized in that: The angle locking mechanism (7) includes a first connecting plate (71), a second connecting plate (72), a welding nut (73) and a connecting bolt (74). The inner ends of the two first connecting plates (71) are fixed to both sides of the bottom of the front wall of the support plate (2). A first circular arc hole (75) for the connecting bolt (74) to pass through is provided in the middle of the first connecting plate (71). The inner ends of the two second connecting plates (72) are fixed to both sides of the bottom of the rear wall of the anchor bolt tray (4). A second circular arc hole (76) for the connecting bolt (74) to pass through is provided in the middle of the second connecting plate (72). The cross-sections of the first connecting plate (71) and the second connecting plate (72) are both partial circular ring structures with the hinge joint between the support plate (2) and the anchor bolt tray (4) as the center and equal diameters. The cross-sections of the first circular arc hole (75) and the second circular arc hole (76) are both arc structures with the hinge joint between the support plate (2) and the anchor bolt tray (4) as the center and equal diameters. The first connecting plate (71) and the second connecting plate (72) are threadedly connected and locked with the welding nut (73) after the screw of the connecting bolt (74) passes through the first circular arc hole (75) and the second circular arc hole (76).

5. An adjustable bolt support structure in a mining roadway according to claim 4, characterized in that: The two first connecting plates (71) are respectively arranged outside the two second connecting plates (72), and the inner walls of the two first connecting plates (71) can contact the outer walls of the two second connecting plates (72).

6. The adjustable bolt support structure in a mining roadway according to claim 5, characterized in that: The welding nut (73) is fixed to the outer ends of the inner walls of the two second connecting plates (72). The aperture of the welding nut (73) is equal to the width of the second circular arc hole (76), and the threaded hole of the welding nut (73) coincides with the outer end of the second circular arc hole (76).

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