Gob-side entry retaining supporting device for underground working face

Abstract

The utility model relates to the field of mining, in particular to an underground working face gob-side entry retaining supporting device which comprises an installation block, a threaded column, a fixing head and a rotating plate, an installation groove is formed in one side of the installation block, the rotating plate is rotatably installed on the outer wall of the installation groove, and a positioning disc is arranged on the other side of the installation block. A threaded groove is embedded in the surface of the positioning disc, a threaded column is in threaded connection with the interior of the threaded groove, a fixing head is fixed to one side of the threaded column, and moving blocks distributed in an annular array are arranged in the fixing head. According to the device, the mine hole reinforcing effect can be achieved through the fixing head convenient to install, a net-shaped supporting frame is achieved in cooperation with a plurality of positioning blocks, and the problems that an existing underground working supporting device lacks the rapid and stable supporting effect and installation mode, consequently, the supporting device cannot be conveniently installed underground, and the working efficiency of underground workers is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of mining, and in particular to a support device for leaving the goaf in an underground working face. Background Technology

[0002] Mining support systems are support devices used in underground engineering projects such as mines. Their function is to ensure the safety of underground workers and prevent collapses and other accidents. Common mining support systems include wooden piles, steel supports, and concrete pouring, used to reinforce and stabilize underground structures.

[0003] While existing technologies can achieve certain mine support effects, they have drawbacks: existing underground working support devices lack rapid and stable support effects and installation methods, making it difficult to install support devices underground and affecting the work efficiency of underground workers. In view of this, we propose an underground working face goaf retention roadway support device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a support device for roadway retention along the goaf in underground working faces.

[0005] The technical solution of this utility model is as follows: a support device for leaving the roadway along the goaf in an underground working face, comprising an installation block, a threaded column, a fixed head and a rotating plate. The installation block has an installation groove on one side, and a rotating plate is rotatably installed on the outer wall of the installation groove. The installation block has a positioning plate on the other side, and a threaded groove is embedded in the surface of the positioning plate. A threaded column is threadedly connected inside the threaded groove. A fixed head is fixed on one side of the threaded column, and a moving block arranged in a ring array is provided inside the fixed head.

[0006] When using this device, the mounting block is fixed to the inner wall of the mine shaft that needs reinforcement. Then, an external mechanical means is used to rotate the threaded column. As the threaded column rotates, it can be inserted into a pre-drilled hole with the fixing head. After the fixing head enters the bottom, the external control system is connected to the terminal block. Pulling the limit key closes the rotating plate, and then releasing the limit key, the limit key and the limit groove cooperate to close the rotating plate. The rear control system starts the hydraulic cylinder to drive the moving block to expand and fix it to the inside of the wall. This achieves the installation effect of the device. Multiple devices need to be installed in the mine shaft. Then, the positioning holes on the upper end of the positioning block on one side of the rotating plate are used to achieve a two-by-two linkage method to fix the fence. After multiple fences are fixed, a support effect can be formed inside the mine shaft. This device is easy to install and has a stable reinforcement effect, making it highly practical.

[0007] Preferably, the mounting block has a groove on the side opposite to the mounting slot, and the groove is circular with a diameter equal to that of the positioning plate. The groove has a mounting hole inside, and the outer wall of the positioning plate has a screw threaded into the mounting hole. A rotating block is rotatably mounted on one side of the mounting block.

[0008] Preferably, the threaded post has a wire inside, a terminal post on one side of the threaded post, a hydraulic cylinder inside the fixed head, the hydraulic cylinder includes a series of devices such as an oil storage tank, a hydraulic rod is inserted into the upper end of the hydraulic cylinder, and the hydraulic rod is fixedly connected to the lower end of the moving block.

[0009] Preferably, a limiting groove is provided on one side of the rotating plate, and a limiting key is provided inside one side of the mounting block, the limiting key being inserted into the limiting groove.

[0010] Preferably, a limiting rod is fixed to one side of the limiting key, the limiting rod passes through the outer wall of one side of the mounting block, and a spring is fixed between the cap of the limiting key and the outer wall of the mounting block.

[0011] Preferably, a second spring is fixed between the outer wall of the rotating plate and the inner wall of the mounting block, and a through hole is provided on the surface of the rotating plate.

[0012] Preferably, a positioning block is rotatably mounted on one side of the rotating plate, and a positioning hole is formed on the surface of the positioning block.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This utility model can achieve the effect of rotating into the pre-drilled hole by using the combination of threaded column and threaded groove, and then fixing the device by using hydraulic cylinder to support the moving block. The threaded column that goes deep into the hole is made of hard material, which can achieve the effect of reinforcing the mine wall.

[0015] Second, based on the first beneficial effect, this device can use a rotating plate to fix one end of the threaded column that is reinforced inside the tunnel entrance, so that it will not loosen due to geological activity and the axial movement of the threaded column will not occur. This ensures the stability of the threaded column inserted into the wall. The positioning block on one side of the rotating plate can be used to connect multiple guardrails to achieve the overall linkage support effect of the mine.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional perspective view of the present invention from a first angle;

[0018] Figure 2 This is a two-dimensional perspective view of the present invention.

[0019] Figure 3 This is a front view schematic diagram of the present invention;

[0020] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle;

[0021] Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the B-structure;

[0022] Figure 6 For the present utility model Figure 3 Enlarged schematic diagram of the C-structure.

[0023] Figure label:

[0024] 1. Mounting block; 2. Rotating block; 3. Positioning plate; 4. Screw; 5. Threaded post; 6. Threaded groove; 7. Positioning block; 8. Positioning hole; 9. Limiting groove; 10. Rotating plate; 11. Limiting key; 12. Through hole; 13. Mounting groove; 14. Terminal post; 15. Limiting rod; 16. Spring 1; 17. Spring 2; 18. Moving block; 19. Fixed head; 20. Hydraulic cylinder; 21. Hydraulic rod. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1-6As shown, this embodiment is a support device for roadway retention along the goaf in an underground working face, including a mounting block 1, a threaded column 5, a fixing head 19 and a rotating plate 10. The mounting block 1 has a mounting groove 13 on one side, and the rotating plate 10 is rotatably mounted on the outer wall of the mounting groove 13. The mounting block 1 has a positioning plate 3 on the other side, and a threaded groove 6 is embedded in the surface of the positioning plate 3. The threaded column 5 is threadedly connected inside the threaded groove 6. The fixing head 19 is fixed on one side of the threaded column 5, and the fixing head 19 has movable blocks 18 arranged in a ring array inside.

[0031] When using this device, the mounting block 1 is fixed to the inner wall of the mine shaft that needs reinforcement. Then, the threaded column 5 is rotated using external mechanical means. As the threaded column 5 rotates, it can cooperate with the fixing head 19 to insert into the pre-drilled hole. After the fixing head 19 enters the bottom, the external control system is connected to the terminal block 14. Then, the limit key 11 is pulled open to close the rotating plate 10. Then, the limit key 11 is released, and the limit key 11 cooperates with the limit groove 9 to realize the closed state of the rotating plate 10. The rear control system starts the hydraulic cylinder 20 to drive the moving block 18 to expand and fix it to the inside of the wall. This achieves the installation effect of the device. Multiple devices need to be installed in the mine shaft. Then, the positioning holes 8 on the upper end of the positioning block 7 on one side of the rotating plate 10 are used to realize the fixed fence in a two-by-two linkage manner. After multiple fences are fixed, the support effect inside the mine shaft can be formed. This device is easy to install and has a stable reinforcement effect, making it highly practical.

[0032] Example 2

[0033] Please see Figures 1-6 As shown, this embodiment, based on embodiment 1, further includes: a groove on the side of the mounting block 1 away from the mounting groove 13, and the groove is circular with a diameter equal to that of the positioning disk 3. The groove has a mounting hole inside, and the outer wall of the positioning disk 3 has a screw 4. The screw 4 is threaded into the mounting hole. A rotating block 2 is rotatably mounted on one side of the mounting block 1. The rotating block 2 can pre-position the positioning disk 3, and then the screw 4 is used for installation. This design of the positioning disk 3 allows for the disassembly and assembly of the device, making it convenient to carry.

[0034] The threaded post 5 has a wire inside, and a terminal 14 is provided on one side of the threaded post 5. The fixed head 19 has a hydraulic cylinder 20 inside, which includes a series of equipment such as an oil storage tank. A hydraulic rod 21 is inserted into the upper end of the hydraulic cylinder 20, and the hydraulic rod 21 is fixedly connected to the lower end of the moving block 18. The hydraulic cylinder 20 is divided into four directions and is distributed in a linear array. The hydraulic cylinder 20 can drive the moving block 18 to lift up, so as to achieve the fixing effect of the fixed head 19 and the soil inside the wall. The terminal 14 is connected to the control unit of the hydraulic cylinder 20 to realize the start and stop control of the hydraulic cylinder 20.

[0035] A limiting groove 9 is provided on one side of the rotating plate 10, and a limiting key 11 is provided inside one side of the mounting block 1. The limiting key 11 is inserted into the limiting groove 9. The cooperation between the limiting key 11 and the limiting groove 9 can achieve the fixing effect when the rotating plate 10 is closed, effectively preventing the threaded column 5 from moving axially.

[0036] A limit rod 15 is fixed on one side of the limit key 11. The limit rod 15 passes through the outer wall of one side of the mounting block 1. A spring 16 is fixed between the cap of the limit key 11 and the outer wall of the mounting block 1. The spring 16 can ensure the insertion effect between the limit key 11 and the limit groove 9.

[0037] A second spring 17 is fixed between the outer wall of the rotating plate 10 and the inner wall of the mounting block 1. A through hole 12 is opened on the surface of the rotating plate 10. The second spring 17 makes the rotating plate 10 tend to close inward, so that it will not swing randomly during installation.

[0038] A positioning block 7 is rotatably installed on one side of the rotating plate 10. The positioning block 7 has a positioning hole 8 on its surface. Multiple positioning blocks 7 can be used to install a horizontal and vertical protective railing to achieve the support effect of the mesh mine tunnel.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for supporting a gob-side entry in a mine, comprising a mounting block (1), a threaded column (5), a fixing head (19) and a rotating plate (10), characterized in that: The installation block (1) is provided with an installation groove (13) on one side, the outer wall of the installation groove (13) is rotatably provided with a rotating plate (10), the other side of the installation block (1) is provided with a positioning disc (3), the surface of the positioning disc (3) is embedded with a threaded groove (6), the threaded groove (6) is internally threadedly connected with a threaded column (5), one side of the threaded column (5) is fixedly provided with a fixed head (19), the fixed head (19) is internally provided with a plurality of moving blocks (18) arranged in a ring array.

2. A device for supporting a gateway along a working face in a mine, according to claim 1, characterised in that: The installation block (1) is provided with a groove on the side away from the installation groove (13), and the groove is circularly designed, the diameter of the groove is equal to that of the positioning disc (3), the groove is internally provided with a mounting hole, the outer wall of the positioning disc (3) is provided with a screw (4), the screw (4) is threadedly connected in the mounting hole, and the installation block (1) is rotatably provided with a rotating block (2) on one side.

3. A device for supporting a gateway along a working face in a coal mine according to claim 1, characterized in that: The threaded column (5) is internally provided with a wire, one side of the threaded column (5) is provided with a terminal post (14), the fixed head (19) is internally provided with a hydraulic cylinder (20), the hydraulic cylinder (20) internally comprises a series of equipment such as an oil storage tank, a hydraulic rod (21) is inserted into the upper end of the hydraulic cylinder (20), the hydraulic rod (21) is fixedly linked with the lower end of the moving block (18), and the hydraulic cylinder (20) is divided into four directions and arranged in a straight line array.

4. A device for supporting a gateway along a working face in a coal mine according to claim 1, characterized in that: The rotating plate (10) is provided with a limiting groove (9) on one side, and the installation block (1) is internally provided with a limiting key (11) on one side.

5. A device for supporting a gateway along a working face in a mine, according to claim 4, characterised in that: The limiting key (11) is fixedly provided with a limiting rod (15) on one side, the limiting rod (15) penetrates through the outer wall of the installation block (1), and the limiting key (11) is fixedly provided with a spring (16) between the brim and the outer wall of the installation block (1).

6. A device for supporting a gateway along a working face in a coal mine according to claim 1, characterized in that: The outer wall of the rotating plate (10) and the inner wall of the installation block (1) are fixedly provided with a spring (17), and the surface of the rotating plate (10) is provided with a through hole (12).

7. A device for supporting a gateway along a working face in a mine, according to claim 1, characterized in that: The rotating plate (10) is rotatably provided with a positioning block (7) on one side, and the surface of the positioning block (7) is provided with a positioning hole (8).

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