Coal mine tunnel supporting structure convenient to adjust

Abstract

The utility model relates to a coal mine roadway supporting structure convenient to adjust, which comprises roadway supporting bases, a supporting gantry top beam, a U-shaped connecting bolt and a fine adjustment roadway top contact structure, the roadway supporting bases are oppositely arranged, and the bottom sides of the two ends of the supporting gantry top beam are connected to the two sets of roadway supporting bases. The U-shaped connecting plug pins are connected to side arms at the two ends of the supporting gantry top beam and make contact with the top end of the roadway supporting base, and the fine adjustment roadway top contact structures are arranged and connected to the top face of the supporting gantry top beam. The arrangement of a roadway supporting structure is optimized, the structural design of a traditional roadway supporting structure is changed, the traditional roadway supporting structure is improved into a structure with the height adjusting function and the effective supporting function, the application range is wider, the adjusting mode of the structure is simple, the large-amplitude adjusting mode and the fine adjusting mode are achieved, and the roadway supporting structure is suitable for being used and popularized.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roadway support, and in particular to a coal mine roadway support structure that is easy to adjust. Background Technology

[0002] In coal mining, roadway support is a crucial element in ensuring operational safety and roadway stability. Traditional roadway support structures, such as rigid supports or simple anchor bolts, have fixed structural forms and parameters. However, the geological conditions of coal mine roadways are complex and variable, with significant differences in the properties of the surrounding rock and stress distribution in different areas. Fixed support structures struggle to adapt to these variations. In soft, fractured rock strata or high-stress areas, they cannot provide sufficient support force, easily leading to roadway deformation and collapse. Conversely, in stable rock strata areas, they may waste support materials. Some adjustable support structures have complex adjustment methods, requiring various tools and consuming significant manpower and time. Furthermore, due to unreasonable support structure design, repair and reinforcement operations become difficult after roadway deformation. Therefore, an easily adjustable coal mine roadway support structure is designed. Utility Model Content

[0003] The purpose of this utility model is to provide an easily adjustable coal mine roadway support structure to solve the above-mentioned technical problems. To achieve the above purpose, this utility model adopts the following technical solution:

[0004] An easily adjustable coal mine roadway support structure includes roadway support bases, support gantry beams, U-shaped connecting pins, and fine-tuning roadway top contact structures. The roadway support bases are arranged opposite each other. The bottom sides of both ends of the support gantry beams are connected to two sets of roadway support bases. The U-shaped connecting pins are connected to the side arms at both ends of the support gantry beams and are in contact with the top of the roadway support bases. Multiple sets of fine-tuning roadway top contact structures are arranged and connected to the top surface of the support gantry beams.

[0005] Based on the above technical solution, the supporting gantry top beam is composed of a gantry frame, a hydraulic cylinder piston head, threaded connection holes, and flat-embedded stepped teeth. The flat-embedded stepped teeth are arranged oppositely on both sides of the bottom side arms at both ends of the gantry frame. The hydraulic cylinder piston head is located at the bottom end of the bottom side arms at both ends of the gantry frame. Multiple sets of threaded connection holes are arranged at equal intervals on the top side of the gantry frame. The fine-tuning tunnel top contact structure is composed of connecting studs, a decorative support plate, and a rubber plate. The rubber plate is fixed to the top surface of the decorative support plate, and the connecting studs are fixed to the center of the bottom surface of the decorative support plate. The connecting studs are threaded into the threaded connection holes. The hydraulic cylinder piston head and the flat-embedded stepped teeth are correspondingly inserted and connected to the tunnel support base, and the hydraulic cylinder piston head and the flat-embedded stepped teeth can move up and down within the tunnel support base. The U-shaped connecting pin can be inserted into the outside of the flat-embedded stepped teeth.

[0006] Based on the above technical solution, the roadway support base consists of a ground base plate, a support cylinder, an external hydraulic pipe for the cylinder, ground fixing holes, and reinforced side arms. The support cylinder is located on the top center of the ground base plate, and the reinforced side arms are arranged diagonally on both sides of the support cylinder and between the ground base plate. The ground base plate, support cylinder, and reinforced side arms are integrally welded and fixed. The external hydraulic pipe for the cylinder is connected to the bottom side of the support cylinder. The ground fixing holes are arranged diagonally at both ends of the ground base plate. The cylinder piston head and the flat-embedded stepped teeth are correspondingly inserted and connected inside the support cylinder, and the cylinder piston head and the flat-embedded stepped teeth can move up and down inside the support cylinder. The U-shaped connecting pin can contact the top of the support cylinder.

[0007] Compared with the prior art, the present invention has the following advantages: The present invention optimizes the setting of the roadway support structure, changes the traditional roadway support structure in terms of structural design, and improves it into a structure with height adjustment and effective support, which has a wider range of applications. Moreover, the adjustment method of the structure is simple, with both large-amplitude adjustment and fine adjustment methods, and it is suitable for widespread use. Attached Figure Description

[0008] Figure 1 This is a general appearance diagram of the present utility model.

[0009] Figure 2 This is a schematic diagram showing the disassembled structure of this utility model.

[0010] Figure 3 This is a schematic diagram of the contact structure between the support gantry beam and the fine-tuning tunnel top of this utility model.

[0011] Figure 4 This is a schematic diagram of the tunnel support base of this utility model.

[0012] In the diagram: 1. Roadway support base; 2. Support gantry top beam; 3. U-shaped connecting pin; 4. Fine-tuning roadway top contact structure; 5. Gantry frame; 6. Hydraulic cylinder piston head; 7. Threaded connection hole; 8. Flat-embedded stepped teeth; 9. Connecting stud; 10. Lace-edged support plate; 11. Rubber plate; 12. Ground base plate; 13. Support cylinder; 14. Hydraulic cylinder external pipe; 15. Ground fixing hole; 16. Reinforced side support arm. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] An easily adjustable coal mine roadway support structure includes a roadway support base 1, a support gantry beam 2, a U-shaped connecting pin 3, and a fine-tuning roadway top contact structure 4. The roadway support base 1 is arranged opposite each other. The bottom sides of both ends of the support gantry beam 2 are connected to two sets of roadway support base 1. The U-shaped connecting pin 3 is connected to the side arms of both ends of the support gantry beam 2, and the U-shaped connecting pin 3 contacts the top of the roadway support base 1. Multiple sets of fine-tuning roadway top contact structures 4 are arranged and connected to the top surface of the support gantry beam 2.

[0015] The supporting gantry top beam 2 consists of a gantry frame 5, a hydraulic cylinder piston head 6, threaded connection holes 7, and flat-set stepped teeth 8. The flat-set stepped teeth 8 are arranged oppositely on both sides of the bottom side arms at both ends of the gantry frame 5. The hydraulic cylinder piston head 6 is located at the bottom end of the bottom side arms at both ends of the gantry frame 5. Multiple sets of threaded connection holes 7 are arranged at equal intervals on the top side of the gantry frame 5. The fine-tuning tunnel top contact structure 4 consists of connecting studs 9 and decorative supports. The system consists of a support plate 10 and a rubber plate 11. The rubber plate 11 is fixed to the top surface of the lace support plate 10. The connecting stud 9 is fixed to the center of the bottom surface of the lace support plate 10. The connecting stud 9 is threaded into the threaded connection hole 7. The hydraulic cylinder piston head 6 and the flat-embedded stepped teeth 8 are correspondingly inserted and connected to the roadway support base 1. The hydraulic cylinder piston head 6 and the flat-embedded stepped teeth 8 can move up and down within the roadway support base 1. The U-shaped connecting pin 3 can be inserted into the outside of the flat-embedded stepped teeth 8.

[0016] The tunnel support base 1 consists of a ground base plate 12, a support cylinder 13, an external hydraulic cylinder pipe 14, ground fixing holes 15, and a reinforcing side support arm 16. The support cylinder 13 is located on the top center of the ground base plate 12. The reinforcing side support arm 16 is inclined and oppositely arranged on both sides of the support cylinder 13 and between the ground base plate 12. The ground base plate 12, the support cylinder 13, and the reinforcing side support arm 16 are integrally welded and fixed. The external hydraulic cylinder pipe 14 is connected to the bottom side of the support cylinder 13. The ground fixing holes 15 are oppositely arranged at both ends of the ground base plate 12. The cylinder piston head 6 and the flat-embedded stepped teeth 8 are correspondingly inserted and connected in the support cylinder 13, and the cylinder piston head 6 and the flat-embedded stepped teeth 8 can move up and down in the support cylinder 13. The U-shaped connecting pin 3 can contact the top of the support cylinder 13.

[0017] The working principle of this utility model is as follows: This structure is simple to use. It is assembled from bottom to top and then adjusted.

[0018] During assembly, different lengths of the support gantry beam 2 need to be selected according to the width of the tunnel. First, the tunnel support base 1 needs to be pre-fixed on the corresponding tunnel floor. The flat-fit stepped teeth 8 and the cylinder piston head 6 are then inserted into the support cylinder 13. During insertion, the external hydraulic pipe 14 needs to be opened to facilitate the insertion. Subsequently, hydraulic oil is pumped into the support cylinder 13 through the external hydraulic pipe 14. During the pumping process, the support gantry beam 2 will be lifted as a whole. After reaching a certain height, the corresponding fine-tuning tunnel top contact structure 4 is connected, and the entire fine-tuning tunnel top contact structure 4 and the support gantry beam 2 are raised to achieve the desired height. The support plate 10 and rubber plate 11 can gradually approach the top of the tunnel. Based on the engagement height of the flat-embedded stepped teeth 8 and the U-shaped connecting pin 3, the height of the tunnel top contact structure 4 is adjusted again to ensure that when the U-shaped connecting pin 3 is embedded in the flat-embedded stepped teeth 8, it can also be supported at the top of the support cylinder 13. This ensures that the height does not change during support and also provides some protection for the hydraulic cylinder external pipe 14 and the support cylinder 13, reducing the risk of the support cylinder 13 bursting. After the final fixation is completed, the corresponding fixing anchors, anchor rods and other structures need to be fixed in the ground fixing holes 15 on the ground base plate 12 to provide stability.

[0019] If ground or tunnel subsidence occurs after the support structure is installed, fine-tuning can be performed again following the installation process described above to achieve effective and reliable tunnel support.

[0020] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. An easily adjustable coal mine roadway support structure, characterized in that, The system includes a roadway support base (1), a support gantry beam (2), a U-shaped connecting pin (3), and a fine-tuning roadway top contact structure (4). The roadway support base (1) is arranged in opposition to each other. The bottom sides of both ends of the support gantry beam (2) are connected to the two sets of roadway support bases (1). The U-shaped connecting pin (3) is connected to the side arms of both ends of the support gantry beam (2), and the U-shaped connecting pin (3) is in contact with the top of the roadway support base (1). The fine-tuning roadway top contact structure (4) is provided in multiple sets, and the multiple sets of fine-tuning roadway top contact structures (4) are arranged and connected to the top surface of the support gantry beam (2).

2. The easily adjustable coal mine roadway support structure according to claim 1, characterized in that, The supporting gantry top beam (2) consists of a gantry frame (5), a hydraulic cylinder piston head (6), threaded connection holes (7), and flat-set stepped teeth (8). The flat-set stepped teeth (8) are arranged oppositely on both sides of the bottom side arms at both ends of the gantry frame (5). The hydraulic cylinder piston head (6) is located at the bottom end of the bottom side arms at both ends of the gantry frame (5). The threaded connection holes (7) are arranged in multiple sets, and the multiple sets of threaded connection holes (7) are arranged at equal intervals on the top side of the gantry frame (5). The fine-tuning tunnel top contact structure (4) consists of connecting studs (9) and decorative support plates. (10) and rubber plate (11) are composed of the rubber plate (11) fixed on the top surface of the lace support plate (10), the connecting stud (9) fixed on the center of the bottom surface of the lace support plate (10), the connecting stud (9) is threaded to the threaded connection hole (7), the cylinder piston head (6) and the flat-embedded stepped tooth (8) are correspondingly inserted and connected to the roadway support base (1), and the cylinder piston head (6) and the flat-embedded stepped tooth (8) can move up and down in the roadway support base (1), and the U-shaped connecting pin (3) can be inserted into the outside of the flat-embedded stepped tooth (8).

3. The easily adjustable coal mine roadway support structure according to claim 2, characterized in that, The roadway support base (1) consists of a ground base plate (12), a support cylinder (13), an external hydraulic pipe (14) for the cylinder, ground fixing holes (15), and reinforcing side arms (16). The support cylinder (13) is located on the top center of the ground base plate (12), and the reinforcing side arms (16) are arranged at opposite inclinations on both sides of the support cylinder (13) and between the ground base plate (12). The cylinder is welded and fixed in one piece. The external oil pipe (14) of the cylinder is connected to the bottom side of the supporting cylinder (13). The ground fixing holes (15) are set opposite to each other at both ends of the ground base plate (12). The cylinder piston head (6) and the flat-embedded stepped teeth (8) are correspondingly inserted and connected in the supporting cylinder (13). The cylinder piston head (6) and the flat-embedded stepped teeth (8) can move up and down in the supporting cylinder (13). The U-shaped connecting pin (3) can contact the top of the supporting cylinder (13).

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