Deep close-distance coal seam roadway supporting structure

Abstract

The utility model relates to the technical field of coal seam roadway supporting structures, in particular to a deep close-distance coal seam roadway supporting structure which comprises two mounting plates, hydraulic cylinders are fixedly connected to the two sides of the bottoms of the mounting plates, cross beams are fixedly connected to the tops of the mounting plates, and reinforcing meshes distributed in equal columns are fixedly connected to the tops of the cross beams. The mounting mechanism is arranged in the mounting plate; the mounting mechanism comprises a sliding groove formed in the inner wall of the mounting plate. According to the device, the hydraulic cylinders are quickly inserted into the mounting plates through the mounting rods and the clamping grooves, and the two clamping plates are far away from each other and clamped to the inner walls of the corresponding mounting rods through the rotating handles and the push wheels, so that the two hydraulic cylinders are quickly mounted in the mounting plates; the hydraulic cylinder and the cross beam are easy to install and more convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting structures for coal seam roadways, and particularly relates to a supporting structure for deep and close coal seam roadways. Background Technique

[0002] In the mining of deep and close coal seams, the surrounding rock of the roadway is affected by high ground stress and complex geological conditions, and is prone to deformation, damage and even caving. Therefore, it is of great significance to use a supporting structure to reasonably support the coal seam roadway to ensure the stability of the roadway and prevent accidents.

[0003] After retrieval, the Chinese patent "A Roof Support Device for Close Coal Seam Roadways" with the authorization announcement number "CN220645978U" drives multiple bolts to be installed on the first connection hole and the second connection hole, so that the hydraulic lifting rod is connected to the supporting beam. When the hydraulic lifting rod rises, it drives the supporting beam to support the roof upward, and it can be disassembled for repeated use when not in use, which is convenient for installation.

[0004] In the above application, after aligning the first connection hole on the hydraulic lifting rod with the second connection hole on the supporting beam, and then driving multiple bolts to be installed one by one to connect the hydraulic lifting rod and the supporting beam, the installation of the hydraulic lifting rod and the supporting beam is too inconvenient.

[0005] Therefore, a supporting structure for deep and close coal seam roadways is proposed to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a supporting structure for deep and close coal seam roadways to solve the above problems, and improve the problem that the installation of the hydraulic lifting rod and the supporting beam is too inconvenient.

[0007] The utility model realizes the above object through the following technical solutions. A deep and close-distance coal seam roadway support structure includes: two mounting plates, both sides of the bottom of the mounting plate are fixedly connected with hydraulic cylinders, the top of the mounting plate is fixedly connected with a cross beam, and the top of the cross beam is fixedly connected with a reinforcing steel mesh distributed in equal columns; a mounting mechanism is arranged inside the mounting plate; wherein, the mounting mechanism includes a chute opened on the inner wall of the mounting plate, both sides of the inner wall of the mounting plate are provided with clamping grooves, the chute is communicated with the clamping grooves, both sides of the inner wall of the chute are slidably connected with clamping plates, the top end of the hydraulic cylinder is fixedly connected with a mounting rod, the upper end of the surface of the mounting rod is clamped inside the inner wall of the clamping groove, the surface of the clamping plate is clamped inside the inner wall of the mounting rod, the inner wall of the mounting plate is rotatably connected with a turning handle, and the top end of the turning handle is fixedly connected with a pushing wheel. Through the mounting rod and the clamping groove, the hydraulic cylinder is quickly inserted into the mounting plate. Through the turning handle and the pushing wheel, the two clamping plates are separated from each other and clamped inside the corresponding inner wall of the mounting rod, so that the two hydraulic cylinders are quickly installed inside the mounting plate. Compared with the existing operation of installing the hydraulic cylinder and the cross beam, which is cumbersome, the operation of installing the hydraulic cylinder and the cross beam in this way is simple, and the installation of the hydraulic cylinder and the cross beam is more convenient.

[0008] Preferably, a lead screw is rotatably connected to the inner wall of the pushing wheel, and an anti-rotation rod is threadedly connected to the surface of the lead screw. The upper end of the surface of the anti-rotation rod is clamped at the bottom of the mounting plate. Through the lead screw and the anti-rotation rod, the fixing of the turning handle is realized, and the stability of the mounting rod installed inside the mounting plate is ensured.

[0009] Preferably, annularly distributed anti-deviation blocks are fixedly connected to the bottom of the mounting plate, and balls are rotatably connected to the surfaces of the anti-deviation blocks. The surfaces of the balls are rotatably connected to the surface of the mounting rod. Through the anti-deviation blocks and the balls, the precise guiding of the mounting rod inserted into the clamping groove is realized, which ensures that the mounting rod is quickly inserted into the clamping groove and shortens the time for installing the hydraulic cylinder and the mounting plate.

[0010] Preferably, a limiting block is fixedly connected to the bottom of the mounting plate, and a sliding block is fixedly connected to the surface of the turning handle. Through the sliding block and the limiting block, the rotation direction of the pushing wheel and the turning handle is restricted, which ensures that the pushing wheel can accurately push the clamping plate into the mounting rod and the anti-rotation rod can be accurately clamped at the bottom of the mounting plate.

[0011] Preferably, the surface of the pushing wheel is elliptical.

[0012] Preferably, two magnetic blocks are fixedly connected to the lower end of the surface of the anti-rotation rod, and the surfaces of the magnetic blocks are slidably connected to the inner wall of the turning handle. Through the magnetic ring, the limiting of the moving anti-rotation rod is realized, which ensures that the anti-rotation rod does not deviate during rotation.

[0013] Preferably, a magnetic ring is fixedly connected to the inner wall of the rotary handle, and the magnetic block attracts the magnetic ring with opposite poles. Through the magnetic block and the magnetic ring, it is ensured that the anti-rotation rod is stably clamped to the bottom of the mounting plate, thereby ensuring the stability of the assembly of the hydraulic cylinder and the mounting plate.

[0014] Preferably, two springs are fixedly connected to one side of the clamping plate, and the other ends of the springs are fixedly connected to one side of the inner wall of the sliding groove. Through the springs, the longest point of the push wheel is moved away from the side of the clamping plate, and the elastic force of the springs will push the clamping plate away from the inside of the mounting rod, and the fixing operation between the hydraulic cylinder and the mounting plate is simple to release.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. Through the mounting rod and the card slot, the hydraulic cylinder is quickly inserted into the mounting plate. Through the rotary handle and the push wheel, the two clamping plates move away from each other and are clamped to the inner wall of the corresponding mounting rod, so that the two hydraulic cylinders are quickly installed in the mounting plate. Compared with the existing complicated operation of installing the hydraulic cylinder and the cross beam, this method is simple to install the hydraulic cylinder and the cross beam, and it is more convenient to install the hydraulic cylinder and the cross beam;

[0017] 2. Through the lead screw and the anti-rotation rod, the fixing of the rotary handle is realized, ensuring the stability of the mounting rod installed in the mounting plate. Through the anti-deviation block and the ball, the accurate guiding of the mounting rod inserted into the card slot is realized, ensuring that the mounting rod is quickly inserted into the card slot, and shortening the installation time of the hydraulic cylinder and the mounting plate. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the sectional view of the mounting plate and the cross beam of the present utility model;

[0020] Figure 3 is Figure 2 the enlarged view of A in

[0021] Figure 4 is Figure 2 the enlarged view of B in

[0022] In the figure: 1. Hydraulic cylinder; 2. Mounting plate; 3. Cross beam; 4. Steel mesh; 5. Mounting mechanism; 51. Sliding groove; 52. Card slot; 53. Mounting rod; 54. Clamping plate; 55. Rotary handle; 56. Push wheel; 57. Lead screw; 58. Anti-rotation rod; 59. Limit block; 510. Slide block; 511. Spring; 512. Anti-deviation block; 513. Ball; 514. Magnetic block; 515. Magnetic ring. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] During specific implementation: As Figures 1-4 shown, a deep near-distance coal seam roadway support structure includes: two mounting plates 2, hydraulic cylinders 1 are fixedly connected to both sides of the bottom of the mounting plate 2, a cross beam 3 is fixedly connected to the top of the mounting plate 2, and a reinforcing mesh 4 distributed in equal columns is fixedly connected to the top of the cross beam 3; a mounting mechanism 5 is arranged inside the mounting plate 2; wherein, the mounting mechanism 5 includes a chute 51 opened on the inner wall of the mounting plate 2, clamping grooves 52 are opened on both sides of the inner wall of the mounting plate 2, the chute 51 is communicated with the clamping grooves 52, clamping plates 54 are slidably connected to both sides of the inner wall of the chute 51, the top end of the hydraulic cylinder 1 is fixedly connected with a mounting rod 53, the upper end of the surface of the mounting rod 53 is clamped in the inner wall of the clamping groove 52, the surface of the clamping plate 54 is clamped in the inner wall of the mounting rod 53, a turning handle 55 is rotatably connected to the inner wall of the mounting plate 2, a pushing wheel 56 is fixedly connected to the top end of the turning handle 55, and the surface of the pushing wheel 56 is elliptical.

[0025] The specification of the reinforcing mesh 4 can be selected as 30cm * 30cm, and an arc-shaped block is fixedly connected to the surface of the hydraulic cylinder 1.

[0026] When supporting a deep near-distance coal seam roadway, a special tool is used to install multiple bolts one by one into the top of the coal seam roadway. The length of the bolt can be selected as 3.5m, the support inclination angle of the bolt is 3°, the bolt spacing is 0.4m, and the installation spacing between the cross beams 3 is 1.5m. The compression zones formed by adjacent bolts overlap with each other to form a compression zone. The loose strata in the compression zone are reinforced by bolts, the integrity is enhanced, and the bearing capacity is improved, so that multiple bolts form a roof, and the bearing capacity between the roof and the coal seam is stronger.

[0027] When using a crossbeam to support the upper roof of a coal roadway, after aligning and inserting the mounting rod 53 on the hydraulic cylinder 1 into the card slot 52, and after the mounting rods 53 on both hydraulic cylinders 1 are inserted into their respective card slots 52, turn the turning handle 55. The rotation of the turning handle 55 drives the rotation of the pushing wheel 56. The longest point of the pushing wheel 56 pushes the two clamping plates 54 away from each other during rotation, causing the clamping plates 54 to be clamped into the mounting rod 53, enabling the two hydraulic cylinders 1 to be quickly connected to the mounting plate 2. At this time, use a special tool to drive 2.4-meter locking foot bolts into both sides of the support area of the coal roadway, and fixedly connect the locking foot bolts to the arc-shaped blocks on the hydraulic cylinder 1. By connecting the locking foot bolts to the formation or rock mass, further deformation can be prevented, the stability of the formation or rock mass can be controlled, and at the same time, the hydraulic cylinder 1 can be stabilized. Install multiple groups of installed hydraulic cylinders 1, mounting plates 2, and crossbeams 3 in the coal roadway in an orderly manner. At this time, manually activate the hydraulic cylinder 1. The upward movement of the hydraulic cylinder 1 drives the mounting plate 2, crossbeam 3, and steel mesh 4 to move upward to support the roof, thereby supporting the coal roadway.

[0028] As Figure 4 shown, the inner wall of the pushing wheel 56 is rotatably connected to a lead screw 57. The surface of the lead screw 57 is threadedly connected to an anti-rotation rod 58. The upper end of the surface of the anti-rotation rod 58 is clamped to the bottom of the mounting plate 2. A limiting block 59 is fixedly connected to the bottom of the mounting plate 2. A slider 510 is fixedly connected to the surface of the turning handle 55. Two magnetic blocks 514 are fixedly connected to the lower end of the surface of the anti-rotation rod 58. The surface of the magnetic blocks 514 is slidably connected to the inner wall of the turning handle 55. A magnetic ring 515 is fixedly connected to the inner wall of the turning handle 55. The magnetic blocks 514 and the magnetic ring 515 attract each other with opposite polarities.

[0029] Rotate the lead screw 57. The rotation of the lead screw 57 drives the anti-rotation rod 58 to move upward. The upward movement of the anti-rotation rod 58 drives the magnetic blocks 514 to move upward within the turning handle 55, causing the anti-rotation rod 58 to move upward and be clamped to the bottom of the mounting plate. Stop rotating the lead screw 57, and make the magnetic blocks 514 adsorbed on the magnetic ring 515, increasing the resistance to the downward movement of the anti-rotation rod 58.

[0030] As Figure 3 shown, annularly distributed anti-deviation blocks 512 are fixedly connected to the bottom of the mounting plate 2. The surface of the anti-deviation blocks 512 is rotatably connected to balls 513. The surface of the balls 513 is rotatably connected to the surface of the mounting rod 53.

[0031] As Figure 4 shown, two springs 511 are fixedly connected to one side of the clamping plate 54. The other ends of the springs 511 are fixedly connected to one side of the inner wall of the chute 51.

[0032] When the hydraulic cylinder 1 and the cross beam 3 need to be disassembled, rotate the lead screw 57 forcefully, so that the anti-rotation rod 58 drives the magnetic block 514 away from the magnetic ring 515 and away from the bottom of the mounting plate 2. Rotate the handle 55, and the rotation of the handle 55 drives the push wheel 56 to rotate and annularly move to contact the side surface of the limiting block 59. Stop rotating the handle 55, so that the longest point of the push wheel 56 is away from the clamping plate 54. At this time, the elastic force of the spring 511 pushes the clamping plate 54 away from the inside of the mounting rod 53, pushes the mounting plate 2 upward, and makes the mounting rod 53 away from the inside of the card slot 52, thereby quickly separating the hydraulic cylinder from the cross beam 3.

[0033] When the present utility model is in use, align the mounting rod 53 on the hydraulic cylinder 1 between the three anti-deviation blocks 512. At this time, the mounting rod 53 is accurately inserted into the card slot 52 under the rolling contact of a plurality of balls 513. After the mounting rods 53 on the two hydraulic cylinders 1 are both inserted into their respective card slots 52, rotate the handle 55. The rotation of the handle 55 drives the push wheel 56 to rotate and annularly move to contact the side surface of the limiting block 59. Stop rotating the handle 55, so that the push wheel 56 pushes the two clamping plates 54 away from each other and clamps them into the mounting rod 53 during rotation, so that the two hydraulic cylinders 1 are quickly connected to the mounting plate 2. Rotate the lead screw 57, and the rotation of the lead screw 57 drives the anti-rotation rod 58 and the magnetic block 514 to move upward, so that the anti-rotation rod 58 is clamped to the bottom of the mounting plate 2, and the magnetic block 514 is adsorbed on the magnetic ring 515, so that the hydraulic cylinder 1 and the cross beam 3 are quickly installed.

[0034] It should be noted that in the above description, the hydraulic cylinder 1, the mounting plate 2, the cross beam 3, the steel bar mesh 4, the magnetic block 514, the magnetic ring 515, etc. are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the power supply of the hydraulic cylinder 1 can be powered by an internal power supply or by mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0035] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep and closely spaced coal seam roadway support structure, characterized in that, Including: Two mounting plates (2), both sides of the bottom of the mounting plate (2) are fixedly connected with hydraulic cylinders (1), the top of the mounting plate (2) is fixedly connected with a cross beam (3), and the top of the cross beam (3) is fixedly connected with a steel mesh (4) distributed in equal columns; A mounting mechanism (5), the mounting mechanism (5) is arranged inside the mounting plate (2); Among them, the mounting mechanism (5) includes a chute (51) opened on the inner wall of the mounting plate (2), card slots (52) are opened on both sides of the inner wall of the mounting plate (2), the chute (51) is communicated with the card slots (52), both sides of the inner wall of the chute (51) are slidably connected with clamping plates (54), the top of the hydraulic cylinder (1) is fixedly connected with a mounting rod (53), the upper end of the surface of the mounting rod (53) is clamped to the inner wall of the card slot (52), the surface of the clamping plate (54) is clamped to the inner wall of the mounting rod (53), the inner wall of the mounting plate (2) is rotatably connected with a turning handle (55), and the top of the turning handle (55) is fixedly connected with a pushing wheel (56).

2. The support structure for deep and closely spaced coal seam roadways according to claim 1, wherein: The inner wall of the pushing wheel (56) is rotatably connected with a lead screw (57), the surface of the lead screw (57) is threadedly connected with an anti-rotation rod (58), and the upper end of the surface of the anti-rotation rod (58) is clamped to the bottom of the mounting plate (2).

3. The support structure for deep and closely spaced coal seam roadways according to claim 1, characterized in that: The bottom of the mounting plate (2) is fixedly connected with anti-deviation blocks (512) distributed in a ring, the surface of the anti-deviation blocks (512) is rollingly connected with balls (513), and the surface of the balls (513) is rollingly connected to the surface of the mounting rod (53).

4. A deep near-distance coal seam roadway support structure according to claim 1, characterized in that: The bottom of the mounting plate (2) is fixedly connected with a limiting block (59), and the surface of the turning handle (55) is fixedly connected with a slider (510).

5. The support structure for deep and closely spaced coal seam roadways according to claim 1, wherein: The surface of the pushing wheel (56) is elliptical.

6. The support structure for deep and closely spaced coal seam roadways according to claim 2, wherein: The lower end of the surface of the anti-rotation rod (58) is fixedly connected with two magnetic blocks (514), and the surface of the magnetic blocks (514) is slidably connected to the inner wall of the turning handle (55).

7. The support structure for deep and closely spaced coal seam roadways according to claim 6, characterized in that: A magnetic ring (515) is fixedly connected to the inner wall of the turning handle (55), and the magnetic blocks (514) and the magnetic ring (515) attract each other with opposite polarities.

8. The support structure for deep and closely spaced coal seam roadways according to claim 1, wherein: One side of the clamping plate (54) is fixedly connected with two springs (511), and the other end of the springs (511) is fixedly connected to one side of the inner wall of the chute (51).

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