A composite roof rapid automatic web laying anchoring device

Abstract

The utility model relates to coal mine roof supporting technical field discloses a kind of composite roof rapid automatic netting anchoring device, including the support structure being set on hydraulic support, and the net roll being sleeved in support structure;Support structure at least has one group;Support structure includes the fixed seat being set on hydraulic support, and the guide roller being rotatably connected with fixed seat;Net roll is sleeved in the outside of guide roller, and be configured as with the layer layer winding or unfolding of guide roller rotation.This utility model sets up rotatable guide roller on hydraulic support, winding net roll on guide roller, another end extends and lays in the lower surface of roof, and structure is simple, and laying efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roof support technology, specifically to a composite roof rapid automatic mesh laying and anchoring device. Background Technology

[0002] Composite roofs consist of multiple layers of rock slabs or rock slabs plus coal seams. Poor adhesion between the upper and lower rock strata leads to delamination between the lower and upper strata, easily causing push-down roof collapses and posing a threat to the support system. Traditional composite roof support often relies on manual operation, which is inefficient, unsafe, and ineffective. Therefore, various mesh-laying devices have been designed to replace manual operation. For example, Chinese invention patent CN117108320A, entitled "An Auxiliary Lifting Device for Anchor Mesh Support in Coal Mine Underground Roadways," uses a lifting device to raise the mesh. However, this method remains inefficient, and the entire mesh-laying device is complex and costly to manufacture. Another example is Chinese utility model patent CN211692529U, entitled "An Anchor Support Device for Tunneling Faces," which only indicates that the mesh-laying device is installed on a hydraulic support but does not detail its specific structure. Therefore, a simple and efficient mesh-laying device is needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a rapid automatic netting and anchoring device for composite roof slabs. By setting a rotatable guide roller on a hydraulic support, the net roll is wound around the guide roller, and the other end extends and is laid on the lower surface of the roof slab. The structure is simple and the laying efficiency is high.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a composite roof slab rapid automatic netting and anchoring device, comprising a support structure mounted on a hydraulic support, and a net roll sleeved on the support structure; There is at least one set of support structures; the support structure includes a fixed seat mounted on a hydraulic support and a guide roller rotatably connected to the fixed seat; The guide rollers are configured to cause the web to wind up or unwind layer by layer as they rotate.

[0005] Furthermore, when there are two or more sets of support structures, multiple sets of support structures are located in the same vertical plane.

[0006] Furthermore, one end of the wire mesh is tightly attached to the outer circumference of the guide roller, and the other end is tightly attached to the lower surface of the top plate.

[0007] Furthermore, the length of the guide roller is greater than the length of the wire roll.

[0008] Furthermore, when there are two or more sets of supporting structures, multiple wire mesh rolls are laid sequentially on the lower surface of the top plate.

[0009] Furthermore, a tensioning assembly is provided on the hydraulic support, which protects the second fixed seat fixed on the hydraulic support and the tensioning wheel rotatably connected to the second fixed seat; the wire mesh is tightly attached to the outside of the tensioning wheel.

[0010] Furthermore, the tensioning assembly is positioned higher than the support structure; the hydraulic support includes a shield beam located at its rear end, and the support structure is mounted on the shield beam.

[0011] The beneficial effects of this utility model are as follows: by setting a rotatable guide roller on the hydraulic support, the mesh roll is wound around the guide roller, and the other end extends and is laid on the lower surface of the top plate. The structure is simple and the laying efficiency is high. It ensures laying safety, reduces manual operation, has low manufacturing cost, and is easy to install. The tensioning component can provide appropriate tension so that the mesh roll is laid flat and without wrinkles. The mesh laying structure works in conjunction with the anchor drilling machine to realize automatic mesh laying and anchor bolt installation in one step, which improves efficiency, reduces safety risks, and enhances support quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure.

[0013] In the diagram: 1. Fixed seat; 2. Guide roller; 3. Tensioning assembly; 4. Net roll; 5. Anchor bolt; 6. Hydraulic support; 7. Shield beam; 8. Anchor bolt drilling rig; 9. Top plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model and are not an absolute limitation on the actual use.

[0016] Example: like Figure 1 As shown, a composite roof slab rapid automatic netting and anchoring device is characterized by: a support structure set on a hydraulic support 6, and a net roll 4 formed by tightly winding layer by layer around an axis and sleeved on the support structure; the wound net roll 4 is hollow, which makes it easy to be sleeved on the guide roller 2. There is at least one set of support structures; the support structure includes a fixed seat 1 set on the hydraulic support 6, and a guide roller 2 rotatably connected to the fixed seat 1; The net roll 4 is fitted outside the guide roller 2 and is configured to roll up or unroll layer by layer as the guide roller 2 rotates; the net roll 4 is made of high-strength polyester fiber flexible net.

[0017] like Figure 1 As shown in the diagram, the left side is defined as the front end of the hydraulic support 6, and the right side is defined as the rear end. The front-to-back direction is longitudinal, and the left-to-right direction is transverse.

[0018] One end of the wire mesh roll 4 is tightly attached to the outer circumference of the guide roller 2, and the other end is tightly attached to the lower surface of the top plate 9.

[0019] When there are two or more sets of support structures, the multiple sets of support structures are located in the same vertical plane, that is, in the top view, they are located on the same straight line in the front and back directions; and multiple wire mesh rolls 4 are laid from top to bottom on the lower surface of the top plate 9 in the vertical plane; the sequential installation of multiple wire mesh rolls 4 improves the support effect.

[0020] The length of guide roller 2 is greater than the length of wire roll 4; both are cylindrical, and their lengths are the shortest distance between their two end faces in the left-right direction.

[0021] A tensioning assembly 3 is installed on the hydraulic support 6. The tensioning assembly 3 protects the second fixed seat fixed on the hydraulic support 6 and the tensioning wheel rotatably connected to the second fixed seat. A section of the mesh roll 4 is tightly attached to the outside of the tensioning wheel. The mesh roll 4 can be wrapped around the outside of the tensioning wheel from the top or the bottom, as long as a certain pressure is applied to the mesh roll 4. The length of the tensioning wheel is not less than the length of the mesh roll 4. Before installing the anchor bolt 5, a hole is drilled. The angle between the drilled hole of the anchor bolt 5 and the top plate is between 75° and 90°. The tensioning assembly 3 is positioned higher than the support structure; the hydraulic support 6 includes a shield beam 7 located at its rear end, and the support structure is mounted on the shield beam 7.

[0022] During operation, the nylon mesh roll 4 to be laid is placed on the guide roller 2 of the supporting structure, and the secure fixing of the mesh roll 4 is checked. The other end of the mesh roll is smoothly guided to the top plate 9 through the guide roller 2 and tensioning wheel. The tensioning component 3 monitors and adjusts the tension of the mesh to ensure that the mesh remains flat at all times. The anchor drilling machine 8 is located directly below the mesh roll 4 laid on the top plate 9 at the rear end. Temporary support and the anchor drilling machine 8 are configured. The temporary support provides initial support to the top plate. The anchor drilling machine 8 is started, and the anchor rod 5 is inserted from below into the mesh roll 4 and the top plate 9. The anchor drilling machine 8 drives the anchor rod 5 to rotate and drill into the top plate 9 until the drilling depth reaches the preset value. The anchor drilling machine 8 stops running, completing the anchoring of one anchor point. After anchoring, it will move to the next working position according to the preset anchor point spacing until the mesh laying and anchoring operation of the entire top plate is completed.

[0023] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A rapid automatic mesh laying and anchoring device for composite roof slabs, characterized in that: It includes a support structure installed on the hydraulic support (6) and a wire mesh roll (4) sleeved on the support structure. The support structure has at least one set; the support structure includes a fixed seat (1) disposed on the hydraulic support (6) and a guide roller (2) rotatably connected to the fixed seat (1). The guide roller (2) is configured to cause the web roll (4) to wind up or unwind layer by layer as it rotates; The hydraulic support (6) is provided with a tensioning assembly (3), which includes a second fixed seat fixed on the hydraulic support (6) and a tensioning wheel rotatably connected to the second fixed seat; the net roll (4) is tightly attached to the outside of the tensioning wheel.

2. The composite roof slab rapid automatic mesh laying and anchoring device according to claim 1, characterized in that: When there are two or more sets of the support structure, the multiple sets of the support structure are located in the same vertical plane.

3. The composite roof slab rapid automatic mesh laying and anchoring device according to claim 1, characterized in that: The mesh roll (4) is sleeved on the outside of the guide roller (2). One end of the mesh roll (4) is tightly attached to the outer circumferential surface of the guide roller (2), and the other end is tightly attached to the lower surface of the top plate (9).

4. The composite roof slab rapid automatic mesh laying and anchoring device according to claim 1, characterized in that: The length of the guide roller (2) is greater than the length of the web roll (4).

5. The composite roof slab rapid automatic mesh laying and anchoring device according to claim 2, characterized in that: When the number of the support structures is two or more, multiple wire rolls (4) are laid sequentially on the lower surface of the top plate (9).

6. The composite roof slab rapid automatic mesh laying and anchoring device according to claim 1, characterized in that: The tensioning component (3) is positioned higher than the support structure; the hydraulic support (6) includes a shield beam (7) located at its rear end, and the support structure is mounted on the shield beam (7).

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