Anchor net laying device for supporting thick coal seam

Abstract

The invention relates to the technical field of tunnel supporting and discloses a thick coal seam supporting anchor net laying device which comprises a base, a telescopic cylinder hinged to the base and an electromagnet arranged at the output end of the telescopic cylinder, an anchor net body is attracted to the top of the electromagnet, and the output end of the telescopic cylinder is rotationally connected with a supporting frame. The fixed end of the telescopic cylinder is rotatably connected with a rotating disc, the surface of the rotating disc is fixedly connected with an adjusting cylinder, the output end of the adjusting cylinder is fixedly connected with a movable ring, the top of the movable ring is provided with a plurality of adjusting rods, the adjusting rods penetrate through the supporting frame, and the tops of the adjusting rods are provided with connecting assemblies used for being connected with the edge of an anchor net. When the connecting assembly is connected to the edge of the anchor net, the adjusting rod drives the edge of the anchor net to bend and deform in the direction close to the base through contraction of the adjusting cylinder. The method has the effects of improving the utilization rate of the net laying space under the narrow roadway and improving the laying flexibility of the anchor net.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support, and more specifically, it relates to an anchor net laying device for thick coal seam support. Background Art

[0002] During the process of driving along the bottom of the crossheading in the thick coal seam working face, due to the intense manifestation of mine pressure during the mining of the thick coal seam and being affected by multiple mining movements and stress concentration, the roadway coal body is prone to instability, which in turn leads to further deterioration of the roadway surrounding rock structure. Therefore, certain measures need to be taken to support the roadway surrounding rock.

[0003] In the thick coal seam roadway, the support forms mostly include combined supports such as bolts, cable bolts, anchor nets, and U-shaped steel extensible supports. Among them, the anchor net needs to be attached to the surface of the roadway surrounding rock, and then bolts and cable bolts are driven in for further fastening. Currently, the laying and attachment of the anchor net are often carried out by an anchor net automation device.

[0004] In some narrow roadways, it is difficult to advance the automation device, resulting in difficulties in laying the anchor net. Moreover, when laying and adjusting the anchor net in a narrow roadway, the edge of the anchor net is loose, with burrs or curled edges, which is easy to fit with the adjacent anchor net and get stuck out of position, making it difficult to adjust the laying of the anchor net. Summary of the Invention

[0005] The present invention discloses an anchor net laying device for thick coal seam support to solve the technical problems in the above background art.

[0006] The present invention discloses an anchor net laying device for thick coal seam support, which includes a base, a telescopic cylinder hinged on the base, and an electromagnet arranged at the output end of the telescopic cylinder. An anchor net body is adsorbed on the top of the electromagnet. The output end of the telescopic cylinder is rotationally connected to a support frame, the fixed end of the telescopic cylinder is rotationally connected to a turntable, a regulating cylinder is fixedly connected to the surface of the turntable, a movable ring is fixedly connected to the output end of the regulating cylinder, a plurality of regulating rods are arranged on the top of the movable ring, the regulating rods penetrate through the support frame, and a connecting component for connecting the edge of the anchor net is installed at the top of the regulating rods;

[0007] When the connecting component is connected to the edge of the anchor net, by the contraction of the regulating cylinder, the regulating rods drive the edge of the anchor net to bend and deform towards the direction close to the base.

[0008] Preferably, the connecting component includes a movable block, the movable block is connected to the regulating rod through a displacement component, a plurality of regulating holes are formed on the surface of the movable block, and a connecting rod A is hinged through the regulating holes. One end of the connecting rod A is hinged to a connecting rod B, and the end of the connecting rod B far from the connecting rod A is hinged to a sliding rod. The sliding rod is limited to slide in the movable block and is connected to the movable block through a tension spring;

[0009] The utility model also includes a pull-back assembly for moving the hinge point of the link A and the link B toward the inside of the movable block.

[0010] Preferably, the pull-back assembly includes a return rope, the upper and lower ends of the return rope are fixedly connected to the slide rod and the movable ring respectively, and the surface of the adjustment rod is fixedly connected to a limit plate.

[0011] Preferably, the displacement assembly includes a slide fixedly connected to the bottom of the movable block, a sliding groove for the slide to slide is provided inside the adjusting rod, and one end of the movable block located inside the adjusting rod is connected to the adjusting rod through a plurality of springs A.

[0012] Preferably, it also includes a driving component, which is arranged on the surface of the base. The driving component includes a rotating shaft, which is fixedly connected to the bottom of the telescopic cylinder and has both ends hinged to the base. A driving member is installed on the surface of the base, and the output end of the driving member is connected to the rotating shaft.

[0013] Preferably, the connecting assembly includes a plurality of adjusting plates rotatably connected to the output end of the telescopic cylinder, a snap-fit assembly for connecting to the anchor net is provided on the top of the adjusting plate, and the bottom of the adjusting plate is connected to the movable ring via a pull rope.

[0014] Preferably, the engaging assembly includes a clamping block A fixedly connected to the top of the adjusting piece, and the clamping block A is bent in a direction away from the electromagnet.

[0015] Preferably, the locking assembly includes a block B slidably connected to the top of the adjusting plate, and a movable groove for sliding the block B is opened on the top of the adjusting plate. A spring B is fixedly connected to the inner wall of the movable groove, and one end of the spring B is fixedly connected to the block B.

[0016] Preferably, the adjusting sheet is a stainless steel sheet.

[0017] Preferably, a plurality of rollers are installed on the bottom of the base.

[0018] The beneficial effects of the present invention are:

[0019] The present invention only provides a telescopic cylinder and a base, and uses an electromagnet to absorb the anchor net and lay it, which effectively reduces the overall occupied area, improves the utilization rate of the net laying space in narrow alleys, provides convenience for construction, and improves the net laying efficiency in narrow alleys to a certain extent.

[0020] The present invention connects the edges of the anchor net by arranging a connecting component, and by adjusting the pullback of the cylinder, the edges of the anchor net are retracted and bent relative to the central area, and the edges of the anchor net are staggered with adjacent anchor nets, effectively reducing the problem of the overall inconvenience of adjusting the anchor net due to the clamping of the anchor net. Therefore, after the anchor net is attached to the inner wall of the tunnel, the anchor net can still be rotated and adjusted without retracting the anchor net, thereby improving the applicability of the entire device. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention for showing the internal structure of the base;

[0023] Figure 3 is a schematic diagram of one embodiment of the present invention for showing the connection component;

[0024] Figure 4 is the present invention Figure 3 an enlarged view of part A;

[0025] Figure 5 is a schematic diagram of one embodiment of the present invention for showing the bending of the anchor net body;

[0026] Figure 6 is a schematic diagram of another embodiment of the present invention for showing the connection component;

[0027] Figure 7 is a schematic diagram of one embodiment of the present invention for showing the engaging component;

[0028] Figure 8 is a schematic diagram of another embodiment of the present invention for showing the engaging component;

[0029] Figure 9 is a schematic diagram of another embodiment of the present invention for showing the bending of the anchor net body.

[0030] In the figures: 1. Base; 11. Roller; 12. Driving member; 13. Rotating shaft; 2. Telescopic cylinder; 21. Electromagnet; 22. Turntable; 221. Adjusting cylinder; 222. Movable ring; 23. Adjusting rod; 231. Movable block; 232. Slide plate; 233. Spring A; 234. Limiting plate; 24. Link A; 241. Link B; 242. Slide rod; 243. Tension spring; 244. Returning rope; 3. Support frame; 31. Anchor net body; 4. Adjusting piece; 41. Block A; 42. Block B; 421. Spring B; 43. Pulling rope. Detailed Embodiments

[0031] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0032] In an embodiment of the present invention, an anchor mesh laying device for thick coal seam support is disclosed. As Figures 1-9 shown, it includes a base 1, a telescopic cylinder 2 hinged to the base 1, and an electromagnet 21 provided at the output end of the telescopic cylinder 2. An anchor mesh body 31 is adsorbed on the top of the electromagnet 21. The electromagnet 21 can be fixedly connected to the top of the telescopic cylinder 2 or rotatably connected to the top of the telescopic cylinder 2. In this way, the anchor mesh body 31 can be rotated arbitrarily when the electromagnet 21 adsorbs the anchor mesh body 31, and thus the angle of the anchor mesh body 31 can be adjusted. The output end of the telescopic cylinder 2 is rotatably connected to a support frame 3. The support frame 3 is arc-shaped. In this way, when the anchor mesh is pushed and fitted to the surface of the roadway wall, the arc-shaped surface of the support frame 3 is convenient for adapting to the arc-shaped inner wall surface of the roadway, and thus it is convenient for the anchor mesh to be laid more closely to the inner wall surface of the roadway. The fixed end of the telescopic cylinder 2 is rotatably connected to a turntable 22. A regulating cylinder 221 is fixedly connected to the surface of the turntable 22. The regulating cylinder 221 can rotate at the fixed end of the telescopic cylinder 2 through the turntable 22. The output end of the regulating cylinder 221 is fixedly connected to a movable ring 222. The movable ring 222 is sleeved on the outer surface of the telescopic cylinder 2, and its diameter is larger than the diameter of the telescopic cylinder 2. A plurality of regulating rods 23 are provided at the top of the movable ring 222. The regulating rods 23 penetrate through the support frame 3, and a connecting component for connecting the edge of the anchor mesh is installed at the top of the regulating rods 23.

[0033] Specifically, when the connecting component is connected to the edge of the anchor mesh, by the contraction of the regulating cylinder 221, the regulating rods 23 drive the edge of the anchor mesh to bend and deform towards the direction close to the base 1. Since the telescopic cylinder 2 does not extend or contract at this time, the central position of the anchor mesh adsorbed on the electromagnet 21 does not move relatively, but only the edge area of the anchor mesh moves towards the direction close to the base 1, that is, away from the inner wall of the roadway, so that the whole anchor mesh bends into an arc shape, and its edge position can be far away from the adjacent anchor meshes already laid on the inner wall of the roadway or the uneven broken rock blocks on the inner wall surface of the roadway, reducing the phenomenon that the anchor mesh is misaligned and stuck in the adjacent anchor meshes or the rock blocks on the inner wall of the roadway, and thus facilitating the overall rotation of the anchor mesh body 31 for adjustment and improving the adjustment flexibility of the anchor mesh.

[0034] It should be noted that when it is necessary to lay the anchor net, the anchor net body 31 is placed on the surface of the electromagnet 21 near its central part. Subsequently, the electromagnet 21 is powered on so that it can adsorb the anchor net body 31. The anchor net body 31 is generally woven from wire mesh, and its edges have flanging, burrs, etc. due to factors such as shearing and processing, which are likely to be engaged and clamped with adjacent anchor nets or rock blocks. Therefore, when placing the anchor net body 31 on the surface of the electromagnet 21, the telescopic cylinder 2 needs to be retracted to the minimum stroke state to avoid obstruction of the anchor net body 31 during placement. When laying the anchor net body 31 on the surface of the roadway rock wall, after rotating the angle of the telescopic cylinder 2, the telescopic cylinder 2 outputs to push the anchor net body 31 towards the surface of the roadway rock wall, and then the anchor net body 31 is pushed to fit on the surface of the roadway rock wall. Subsequently, it is convenient to drill holes and inject anchor bolts, anchor cables, etc. to fasten the anchor net.

[0035] As Figure 3 and Figure 4 shown, in this embodiment, the connection component includes a movable block 231. The movable block 231 is connected to the adjusting rod 23 through a displacement component. A number of adjusting holes are formed on the surface of the movable block 231, and a connecting rod A 24 is hinged through the adjusting holes. One end of the connecting rod A 24 is hinged to a connecting rod B 241. In the normal state, the connecting rod A 24 and the connecting rod B 241 are relatively bent and the whole movable block 231 forms a triangle. The end of the connecting rod B 241 away from the connecting rod A 24 is hinged to a sliding rod 242. The sliding rod 242 is limited to slide within the movable block 231 and is connected to the movable block 231 through a tension spring 243. Both ends of the tension spring 243 are fixedly connected to the movable block 231 and the sliding rod 242 respectively. It also includes a pulling-back component for moving the hinge point of the connecting rod A 24 and the connecting rod B 241 towards the inside of the movable block 231.

[0036] Specifically, through the setting of the tension spring 243, when the tension spring 243 is in a normal relaxed state, it pulls the sliding rod 242 upward and maintains a certain height. At this time, the connecting rod A24 and the connecting rod B241 are in a relatively bent state. When it is necessary to insert the movable block 231 into the anchor mesh pores and connect the movable block 231 with the edge of the anchor mesh, by adjusting the output of the adjusting cylinder 221, the movable ring 222 and several adjusting rods 23 on its surface are pushed to move towards the anchor mesh. When the top of the movable block 231 passes through the anchor mesh pores and continues to advance, the connecting rod A24 contacts the steel wire at the edge of the anchor mesh pores. Under the limitation of the anchor mesh pores with a certain size, the connecting rod A24 is pressed inward, so that the connecting rod A24 drives the connecting rod B241 to pull down the sliding rod 242. The downward movement of the sliding rod 242 stretches the tension spring 243. This process reduces the distance between the hinge points of the two relative connecting rods A24 and B241, and further enables it to pass through the anchor mesh with a certain size of pores. After completely passing through, the tension spring 243 pulls back. The connecting rods A24 and B241 that are no longer restricted by the anchor mesh pop out and return to the initial position, and then get stuck on one side of the anchor mesh pores. At this time, by contracting the adjusting cylinder 221, the adjusting rod 23 pulls the movable block 231 downward, so that the edge of the anchor mesh is driven to move downward synchronously, prompting the anchor mesh to bend.

[0037] Furthermore, the pulling-back assembly includes a pulling-back rope 244. The upper and lower ends of the pulling-back rope 244 are respectively fixedly connected to the sliding rod 242 and the movable ring 222, and a limiting plate 234 is fixedly connected to the surface of the adjusting rod 23.

[0038] Specifically, when the adjusting rod 23 moves downward until the limiting plate 234 abuts against the support frame 3, the adjusting rod 23 can no longer move downward at this time. And the continuously moving adjusting rod 23 will pull down the pulling-back rope 244 connected to it, so that the pulling-back rope 244 actively pulls down the sliding rod 242 at the top. The downward movement of the sliding rod 242 drives the connecting rod B241 to move towards the direction close to the inside of the movable block 231, reducing the distance between the hinge points of the two relative connecting rods A24 and B241, facilitating its passage through the pores of the anchor mesh, and enabling the movable block 231 to be detached from the anchor mesh. After adjusting the anchor mesh, the movable block 231 is detached from the anchor mesh in time to avoid affecting the subsequent laying of the anchor mesh.

[0039] It should be noted that a groove is provided on the surface of the connecting rod B241, which is convenient for the steel wire on the surface of the anchor mesh to be stuck in the groove, improving the connection stability between the movable block 231 and the anchor mesh.

[0040] Further, the displacement component includes a sliding plate 232 fixedly connected to the bottom of the movable block 231. A sliding groove for the sliding plate 232 to slide is formed inside the adjusting rod 23. The sliding plate 232 can only slide horizontally in the sliding groove, and the direction of horizontal sliding is not limited. One end of the movable block 231 located inside the adjusting rod 23 is connected to the adjusting rod 23 through a plurality of spring A 233. The plurality of spring A 233 surround the movable block 231, and both ends of the spring A 233 are fixedly connected to the movable block 231 and the adjusting rod 23 respectively.

[0041] Specifically, through the setting of the displacement component, when the movable block 231 moves forward and is blocked by the pores of the anchor net, such as when the movable block 231 abuts against the steel wire on the surface of the anchor net, under the continuous driving force, the entire movable block 231 can slide horizontally through the sliding plate 232 to avoid obstacles, and then avoid the steel wire and enter the pores on the surface of the anchor net. During this process, some spring A 233 will be compressed and stretched. After the movable block 231 is completely connected to or disconnected from the anchor net, the movable block 231 will be timely returned to the initial position under the resilience of the spring A 233.

[0042] It further includes a driving component arranged on the surface of the base 1. The driving component includes a rotating shaft 13. The rotating shaft 13 is fixedly connected to the bottom of the telescopic cylinder 2, and both ends thereof are hinged to the base 1. A driving member 12 is installed on the surface of the base 1. The driving member 12 is a servo motor and a reducer group. The output end of the servo motor is fixedly connected to the input end of the reducer group, and the output end of the reducer group is fixedly connected to the rotating shaft 13. After being driven by the servo motor and decelerated by the reducer in the driving member 12, the rotating shaft 13 is driven to rotate, thereby driving the telescopic cylinder 2 to rotate and adjust the angle, so as to be suitable for installing anchor nets at different angles.

[0043] Embodiment 2, on the basis of Embodiment 1, the present invention embodiment proposes another implementation manner of the connection component.

[0044] Different from Embodiment 1, the connection component includes a plurality of adjusting pieces 4 rotatably connected to the output end of the telescopic cylinder 2. The adjusting pieces 4 have a certain toughness and elasticity and can be bent. A clamping component for connecting the anchor net is arranged at the top of the adjusting piece 4. The bottom of the adjusting piece 4 is connected to the movable ring 222 through a pull rope 43. Both ends of the pull rope 43 are fixedly connected to the adjusting piece 4 and the movable ring 222 respectively.

[0045] Specifically, under normal conditions, the adjustment piece 4 is in a horizontal state without bending, and the pull rope 43 is also in a straight state. After the center of the anchor net is adsorbed by the electromagnet 21, the edge of the anchor net is connected by the locking assembly. When the anchor net needs to be adjusted, the adjustment cylinder 221 is contracted, and the movable ring 222 is pulled to drive the pull rope 43 to pull down the adjustment piece 4, causing it to bend, thereby driving the anchor net to bend synchronously, so that its edge is staggered from the adjacent anchor nets or irregular rock masses in the roadway, thereby facilitating the rotation of the entire anchor net for adjustment.

[0046] In one embodiment, the locking assembly includes a clamping block A41 fixedly connected to the top of the adjusting piece 4, and the clamping block A41 is bent in the direction away from the electromagnet 21. The curved surface of the clamping block A41 can be easily inserted into the pores on the surface of the anchor net, and the adjusting piece 4 can be slightly bent upward when inserted. After the clamping block A41 is inserted into the pore, the adjusting piece 4 is released, and the anchor net is clamped by the elastic force of the adjusting piece 4 returning to its original position.

[0047] In a parallel embodiment, the locking assembly includes a block B42 slidably connected to the top of the adjusting piece 4, and a movable groove for the sliding of the block B42 is provided on the top of the adjusting piece 4. A spring B421 is fixedly connected to the inner wall of the movable groove, and one end of the spring B421 is fixedly connected to the block B42. In this embodiment, the block B42 is connected to the adjusting piece 4 through the spring B421, and the position of the block B42 can be adjusted by compressing the spring B421 to facilitate its insertion into the pores on the surface of the anchor net, and the elastic force of the spring B421 can be used to clamp the anchor net, thereby reducing the bending of the adjusting piece 4.

[0048] The regulating piece 4 is a stainless steel piece, which has a certain toughness and can be bent to improve durability.

[0049] A plurality of rollers 11 are installed at the bottom of the base 1, and the rollers 11 can be used to facilitate the movement of the entire device and adjust the laying position of the anchor net.

[0050] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make more forms of equivalent embodiments based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. An anchor mesh laying device for thick coal seam support, comprising a base (1), a telescopic cylinder (2) hinged to the base (1), and an electromagnet (21) arranged at the output end of the telescopic cylinder (2). The anchor mesh body (31) is adsorbed on the top of the electromagnet (21), and is characterized in that, The output end of the telescopic cylinder (2) is rotatably connected to a support frame (3), the fixed end of the telescopic cylinder (2) is rotatably connected to a turntable (22), the surface of the turntable (22) is fixedly connected to an adjusting cylinder (221), the output end of the adjusting cylinder (221) is fixedly connected to a movable ring (222), the top of the movable ring (222) is provided with a plurality of adjusting rods (23), the adjusting rods (23) penetrate through the support frame (3), and a connecting component for connecting the edge of the anchor net is installed at the top of the adjusting rods (23); When the connecting component is connected to the edge of the anchor net, by the contraction of the adjusting cylinder (221), the adjusting rod (23) drives the edge of the anchor net to bend and deform towards the direction close to the base.

2. The anchor mesh laying device for thick coal seam support according to claim 1, characterized in that, The connecting component includes a movable block (231), the movable block (231) is connected to the adjusting rod (23) through a displacement component, a plurality of adjusting holes are formed on the surface of the movable block (231), and a connecting rod A (24) is hinged through the adjusting holes, one end of the connecting rod A (24) is hinged to a connecting rod B (241), the end of the connecting rod B (241) far from the connecting rod A (24) is hinged to a sliding rod (242), the sliding rod (242) is limited to slide in the movable block (231) and is connected to the movable block (231) through a tension spring (243); It further includes a pulling-back component for moving the hinge point of the connecting rod A (24) and the connecting rod B (241) towards the inside of the movable block (231).

3. A bolting mesh laying device for thick coal seam support according to claim 2, characterized in that, The pulling-back component includes a return rope (244), the upper and lower ends of the return rope (244) are respectively fixedly connected to the sliding rod (242) and the movable ring (222), and a limiting plate (234) is fixedly connected to the surface of the adjusting rod (23).

4. The anchor net laying device for thick coal seam support according to claim 2, characterized in that, The displacement component includes a sliding plate (232) fixedly connected to the bottom of the movable block (231), a sliding groove for the sliding plate (232) to slide is formed inside the adjusting rod (23), and one end of the movable block (231) located inside the adjusting rod (23) is connected to the adjusting rod (23) through a plurality of spring A (233).

5. The anchor mesh laying device for thick coal seam support according to claim 1, characterized in that, It further includes a driving component arranged on the surface of the base (1), the driving component includes a rotating shaft (13), the rotating shaft (13) is fixedly connected to the bottom of the telescopic cylinder (2), and both ends of it are hinged to the base (1), a driving part (12) is installed on the surface of the base (1), and the output end of the driving part (12) is connected to the rotating shaft (13).

6. A bolting mesh laying device for thick coal seam support according to any one of claims 1-5, characterized in that, The connecting component includes a plurality of adjusting pieces (4) rotatably connected to the output end of the telescopic cylinder (2), a clamping component for connecting the anchor net is arranged at the top of the adjusting piece (4), and the bottom of the adjusting piece (4) is connected to the movable ring (222) through a pulling rope (43).

7. The anchor net laying device for thick coal seam support according to claim 6, characterized in that, The clamping component includes a clamping block A (41) fixedly connected to the top of the adjusting piece (4), and the clamping block A (41) bends towards the direction away from the electromagnet (21).

8. A device for laying an anchor net for thick coal seam support according to claim 6, characterized in that, The clamping component includes a clamping block B (42) slidably connected to the top of the adjusting piece (4). An activity groove for the clamping block B (42) to slide is formed in the top of the adjusting piece (4). A spring B (421) is fixedly connected to the inner wall of the activity groove, and one end of the spring B (421) is fixedly connected to the clamping block B (42).

9. The anchor net laying device for thick coal seam support according to claim 6, characterized in that, The adjusting piece (4) is a stainless steel sheet.

10. The anchor net laying device for thick coal seam support according to claim 1, characterized in that, A plurality of rollers (11) are installed at the bottom of the base (1).

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