A coal mine tunneling supporting device

Abstract

This utility model relates to the field of coal mine roadway support technology, and in particular to a coal mine tunneling support device, comprising: a support body, which includes an arc-shaped beam and a straight beam, with a cross-shaped hole formed at the intersection of the arc-shaped beam and the straight beam; a support assembly, which is connected to the arc-shaped beam and is used to support the support body; and an anchoring assembly, which includes an anchor bolt body, a fixing mechanism, and a fastening mechanism. The fixing mechanism is used to fix the anchor bolt body in the cross-shaped hole, and the fastening mechanism is used to enhance the anchoring force of the anchor bolt body after installation. By using this device in coal mine roadways, the adaptability of the support system under complex geological conditions is improved, providing a more stable and safer support guarantee for coal mine tunneling operations.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roadway support technology, specifically a coal mine tunneling support device. Background Technology

[0002] Tunnel support is used to regulate and control the deformation of the surrounding rock in the tunnel, and to mitigate and reduce the movement of the surrounding rock, so as to prevent the tunnel cross section from shrinking excessively, and at the same time to prevent the collapse of the scattered and damaged surrounding rock. Support equipment should be installed before the surrounding rock loosens and fails, so that the support can work together with the surrounding rock to bear the load while the surrounding rock still has its own load-bearing capacity. In the prior art, the coal mine roadway support equipment disclosed in publication number "CN220451920U" includes a protective net and an anchoring component. The protective net is attached to the roadway wall, and anchoring holes are opened on the roadway wall. The anchoring component is set in the anchoring holes. The anchoring component includes: a rod body with a first protrusion on the outer wall surface; an expansion component sleeved on the rod body, the expansion component including an elastic first section with a second protrusion on the first section; and a driving component for adjusting the position of the rod body along the length direction of the rod body within the expansion component. In a first state, the first protrusion and the second protrusion are at least partially overlapped along the length direction of the rod body, and in a second state, the first protrusion and the second protrusion are misaligned and separated along the length direction of the rod body.

[0003] The aforementioned coal mine roadway support equipment has the following significant drawbacks when in use: The elastic first section of its expansion component wraps around the outside of the rod body, and the rod body needs to move within this elastic first section when its condition changes. However, the primary function of the anchor rod is to provide support through close contact with the rock mass or soil. If the rod body can move within the elastic first section, the close contact between the rod body and the support structure (such as rock strata or soil) will be affected, thereby reducing the tensile strength and support capacity of the anchor rod, thus failing to effectively support the main support structure (i.e., the protective netting in the aforementioned device). Utility Model Content

[0004] The purpose of this utility model is to provide a coal mine tunneling support device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A coal mine tunneling support device, comprising:

[0007] The support body includes an arc-shaped beam and a straight beam, with intersecting holes formed at the intersection of the arc-shaped beam and the straight beam;

[0008] A support assembly connected to the arc-shaped beam, the support assembly being used to support the support body;

[0009] An anchoring assembly, comprising an anchor body, a fixing mechanism, and a fastening mechanism, wherein the fixing mechanism is used to fix the anchor body to the cross hole, and the fastening mechanism is used to enhance the anchoring force of the anchor body after installation.

[0010] Preferably, the support assembly includes a base, a support body, and hydraulic struts. The support body is provided at both ends of the arc-shaped beam, the base is provided at the bottom of the support body, and a plurality of hydraulic struts are arranged around the support body. The two ends of the hydraulic struts are respectively connected to the base and the support body.

[0011] Preferably, four hydraulic struts are provided, and the four hydraulic struts are arranged around the support body.

[0012] Preferably, the two ends of the hydraulic strut are hinged to the base and the support body, respectively.

[0013] Preferably, the fixing mechanism includes a mounting plate, fixing bolts, and a connecting flange. The mounting plate is fixedly connected to the cross hole by bolts, the connecting flange is disposed on the anchor rod body, and the fixing bolts are used to connect the connecting flange to the mounting plate.

[0014] Preferably, the anchor bolt body has an installation hole, and the side wall of the installation hole has a sliding groove. The fastening mechanism includes an installation base, a connecting screw, a connecting nut, an installation ring, connecting rods, a fastening block, and an adjusting structure. The installation base is disposed in the installation hole, the connecting nut is disposed in the installation base, the connecting screw is connected to the connecting nut, the adjusting structure is used to drive the connecting screw to rotate, the installation ring is sleeved on the connecting screw, and three connecting rods are rotatably connected around the installation ring. The connecting rods pass through the sliding groove and are connected to the fastening block.

[0015] Preferably, a handwheel is provided at the end of the connecting screw away from the mounting base. The handwheel is rotatably connected to the connecting flange, and rotating the handwheel drives the connecting screw to rotate.

[0016] Preferably, the connecting flange has a grouting hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This device, through the combined design of arc-shaped beams and straight beams, takes into account both the arc-shaped fit of the roadway roof and the straight support requirements of the sidewalls. The anchoring component adopts a coordinated design of a fixing mechanism and a rigid fastening mechanism to ensure the precise fixing of the anchor rod at the intersection hole. Furthermore, the rigid structure enhances the anchoring force, effectively solving the problems of easy loosening and insufficient anchoring force of traditional anchor rods. By using this device in coal mine roadways, the adaptability of the support system under complex geological conditions is improved, providing a more stable and safe support guarantee for coal mine tunneling operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the support component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure of the mounting plate, fixing bolts, and connecting flange of this utility model;

[0022] Figure 5 This is a schematic diagram showing the position of the fastening block in its expanded state according to this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the anchor bolt body of this utility model (the anchor bolt body is shown in perspective).

[0024] Figure 7 This is a schematic cross-sectional view of the anchor bolt body of this utility model;

[0025] Figure 8 This is a schematic diagram of the mounting ring and connecting rod positions of this utility model.

[0026] In the diagram: 1. Arc beam, 2. Straight beam, 3. Base, 4. Support body, 5. Hydraulic support, 6. Mounting plate, 7. Fixing bolt, 8. Connecting flange, 9. Mounting hole, 10. Slide groove, 11. Mounting seat, 12. Connecting screw, 13. Connecting nut, 14. Mounting ring, 15. Connecting rod, 16. Fastening block, 17. Handwheel, 100. Anchor bolt body, 801. Grouting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-8 This utility model provides a technical solution:

[0029] A coal mine tunneling support device, as shown in the instruction manual. Figure 1 As shown, it includes:

[0030] The main support structure includes an arc-shaped beam 1 and a straight beam 2. The arc-shaped beam 1 and the straight beam 2 intersect to form a frame-like support structure and are used to support the coal mine roadway. The intersection of the arc-shaped beam 1 and the straight beam 2 forms a cross-hole.

[0031] The support assembly is connected to the curved beam 1 and is used to support the main support structure.

[0032] An anchoring assembly includes an anchor body 100, a fixing mechanism, and a fastening mechanism. The fixing mechanism is used to fix the anchor body 100 in the cross hole, and the fastening mechanism is used to enhance the anchoring force of the anchor body 100 after installation.

[0033] The support assembly includes a base 3, a support body 4, and hydraulic struts 5. The base 3 is used to install the support body 4 and the hydraulic struts 5. The support body 4 is provided at both ends of the arc beam 1, and the base 3 is provided at the bottom of the support body 4. Several hydraulic struts 5 are arranged around the support body 4. The two ends of the hydraulic struts 5 are rotatably connected to the base 3 and the support body 4 through hinged supports. In this embodiment, four hydraulic struts 5 are provided, and the four hydraulic struts 5 are arranged around the support body 4.

[0034] The fixing mechanism includes a mounting plate 6, fixing bolts 7, and connecting flange 8. The mounting plate 6 is used to connect the anchor body 100 to the support body. The mounting plate 6 is fixedly connected to the cross hole by bolts. The connecting flange 8 is set on the anchor body 100. The fixing bolts 7 are used to connect the connecting flange 8 to the mounting plate 6.

[0035] The anchor bolt body 100 has an installation hole 9 for installing a fastening mechanism. A groove 10 is provided on the side wall of the installation hole 9 to limit the axial movement of the connecting rod 15. The fastening mechanism includes a mounting base 11, a connecting screw 12, a connecting nut 13, a mounting ring 14, a connecting rod 15, a fastening block 16, and an adjusting structure. The mounting base 11 is fixedly connected inside the installation hole 9 and is used to install the connecting nut 13. The outer side of the connecting nut 13 is fixedly connected to the mounting base 11. The connecting screw 12 and the connecting rod 15 are connected to the fastening mechanism. The nuts 13 cooperate with each other, and the adjustment structure is used to drive the connecting screw 12 to rotate. The mounting ring 14 is sleeved on the connecting screw 12, and the mounting ring 14 and the connecting screw 12 are rotatably connected. Three connecting rods 15 are rotatably connected around the mounting ring 14. The connecting rods 15 pass through the slide groove 10 and are connected to the fastening block 16. The connecting rods 15 and the fastening block 16 are rotatably connected. Therefore, when in use, the fastening block 16 will expand outward, thereby increasing the contact area between the anchor rod and the anchor hole, and thus enhancing the fastening effect.

[0036] A handwheel 17 is provided at the end of the connecting screw 12 away from the mounting base 11. The handwheel 17 is used to facilitate the user to rotate the connecting screw 12. The handwheel 17 is rotatably connected to the connecting flange 8. Rotating the handwheel 17 drives the connecting screw 12 to rotate.

[0037] The connecting flange 8 is provided with a grouting hole 801. The grouting hole 801 is used to further fix the anchor body 100 by grouting into the mounting hole 9 after the anchor body 100 is installed. During grouting, the grouting liquid will enter the mounting hole 9 through the grouting hole 801 and flow out through the chute 10 to fill the gap around the anchor body 100, thereby further improving the anchoring force.

[0038] Working principle: During use, the base 3 is installed symmetrically and at equal intervals in the roadway. After installation, the two ends of the arc beam 1 are fixedly connected to the support body 4. Then, the arc beams 1 are connected to each other by steel beams. After the steel beams are installed, according to the fixing requirements, the anchor holes are drilled on the roadway outside the corresponding cross holes. After drilling, the mounting plate 6 is fixedly connected to the cross holes outside the anchor holes by bolts. Then, the anchor body 100 is inserted into the anchor hole and the anchor body 100 and the support body are connected to each other by connecting flange 8. After the anchor body 100 is installed, the handwheel 17 is turned. The handwheel 17 will drive the connecting screw 12 to rotate, thereby driving the mounting ring 14 to move along the axial direction of the anchor body 100. At this time, the connecting rod 15 will move along the slide groove 10 to further fix the anchor body 100. After fixing, grout is injected into the anchor body 100 through the grouting hole 801 to further improve the anchoring force.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine heading support device, characterised in that, include: The support body includes an arc-shaped beam and a straight beam, with intersecting holes formed at the intersection of the arc-shaped beam and the straight beam; A support assembly connected to the arc-shaped beam, the support assembly being used to support the support body; An anchoring assembly, comprising an anchor bolt body, a fixing mechanism, and a fastening mechanism, wherein the fixing mechanism is used to fix the anchor bolt body to the cross hole, and the fastening mechanism is used to enhance the anchoring force of the anchor bolt body after installation; The support assembly includes a base, a support body, and hydraulic struts. The support body is provided at both ends of the arc-shaped beam, and the base is provided at the bottom of the support body. Several hydraulic struts are arranged around the support body, and the two ends of the hydraulic struts are respectively connected to the base and the support body.

2. The coal mine tunneling support device according to claim 1, characterized in that: The hydraulic struts are provided in four parts, which are arranged around the support body.

3. The coal mine tunneling support device according to claim 1, characterized in that: The hydraulic support is hinged at both ends to the base and the support body, respectively.

4. A coal mine tunneling support device according to claim 1, characterized in that: The fixing mechanism includes a mounting plate, fixing bolts, and a connecting flange. The mounting plate is fixedly connected to the cross hole by bolts, the connecting flange is disposed on the anchor body, and the fixing bolts are used to connect the connecting flange to the mounting plate.

5. A coal mine tunneling support device according to claim 4, characterized in that: The anchor bolt body has an installation hole, and the side wall of the installation hole has a sliding groove. The fastening mechanism includes an installation base, a connecting screw, a connecting nut, an installation ring, connecting rods, a fastening block, and an adjusting structure. The installation base is disposed in the installation hole, the connecting nut is disposed in the installation base, the connecting screw is connected to the connecting nut, the adjusting structure is used to drive the connecting screw to rotate, the installation ring is sleeved on the connecting screw, and three connecting rods are rotatably connected around the installation ring. The connecting rods pass through the sliding groove and are connected to the fastening block.

6. A coal mine tunneling support device according to claim 5, characterized in that: A handwheel is provided at the end of the connecting screw away from the mounting base. The handwheel is rotatably connected to the connecting flange, and rotating the handwheel drives the connecting screw to rotate.

7. A coal mine tunneling support device according to claim 6, characterized in that: The connecting flange has a grouting hole.

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