Mining supporting net

Abstract

The invention provides a mining supporting net, and relates to the technical field of mining supporting. Comprising a center base and eight connecting bases, and the center base and the eight connecting bases jointly form a grid shaped like a Chinese character'tian 'with the center base as the center. I-shaped sleeves are mounted on the top surfaces of the connecting seats in the middles of the four side edges of the grid shaped like the Chinese character'tian ', and the I-shaped sleeves are sleeved with four lantern rings which are stacked; the four lantern rings are sequentially and fixedly provided with a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate which are distributed in a rotating and unfolding mode from bottom to top. According to the mining supporting net, the stability of the roadway can be effectively enhanced, pressure can be evenly dispersed through the grid structure, and local collapse is prevented; during installation, positioning is convenient and fast, and modular operation can be achieved; the foldable supporting plate can save space and transportation cost, is attached to the roadway wall after being unfolded and flexibly adapts to various shapes, and the overall supporting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine support, and particularly to a mine support net. Background Art

[0002] In the existing design of mine support structures, the support methods are usually limited to using mine I-beams or mine bolts for support. This method is prone to problems such as insufficient support or high costs under specific geological conditions. Especially in the case where the roadway tunneling and support need to be frequently adjusted, this rigid support means is difficult to flexibly respond to complex geological changes, resulting in the difficulty of ensuring the stability of the roadway, and the construction efficiency and safety are seriously affected.

[0003] Although there are some scenarios where mine support nets are used, the mine support net itself is mainly woven from metal wires, etc. Compared with some solid support structures (such as integral metal supports), its bearing capacity is relatively weak, and its structure makes it have certain disadvantages in resisting lateral shear force. The shear force generated is likely to cause the grid of the support net to deform or even break, and the support net may not be able to bear huge pressures alone. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art, and a mine support net is proposed.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: The present invention provides a mine support net, including a central seat and eight connecting seats, and a central seat and eight connecting seats together form a "field" - shaped grid centered on the central seat; On four sides of the central seat, movable hinged central connecting rods are installed, and the outer end of each central connecting rod is movably hinged to an adjacent connecting seat, and a movable hinged support connecting rod is installed between a pair of adjacent connecting seats; In the middle of the connecting seats at the four corners of the "field" - shaped grid, bolt holes are opened, and a bolt penetratingly distributed is inserted into each bolt hole; On the top surface of the connecting seats in the middle of the four sides of the "field" - shaped grid, I - shaped sleeves are installed, and four stacked rings are sleeved on the I - shaped sleeves; Four所述 rings are successively and fixedly provided with first support plates, second support plates, third support plates, and fourth support plates that are rotationally unfolded from bottom to top.

[0006] Preferably, single - ear seats are fixedly provided on four sides of each connecting seat, second U - shaped seats are fixedly provided at both ends of the support connecting rod, and each second U - shaped seat is hinged and engaged with the corresponding single - ear seat.

[0007] Preferably, adjacent "field"-shaped grids are installed on all four outer sides of the "field"-shaped grid, and a pair of adjacent "field"-shaped grids are connected by three external connecting rods. Third U-shaped seats are fixedly provided at both ends of each external connecting rod, and each third U-shaped seat is hinged and engaged on the corresponding single-ear seat.

[0008] Preferably, widened ear seats are fixedly provided at the inner ends of each central connecting rod, and first U-shaped seats are fixedly provided at the outer ends of each central connecting rod. Each first U-shaped seat is hinged and engaged on the corresponding single-ear seat.

[0009] Preferably, U-shaped ear seats are fixedly provided on all four side surfaces of the central seat. Each U-shaped ear seat is hinged and engaged on the adjacent widened ear seat. Driven shafts distributed through are rotatably inserted inside the openings of each U-shaped ear seat, and both ends of each driven shaft are fixedly connected to the corresponding widened ear seat.

[0010] Preferably, T-shaped chutes are opened on the inner side walls of the openings of each U-shaped ear seat. T-shaped sliding plates are slidably engaged inside each T-shaped chute, and rectangular racks are fixedly provided on the outer side surfaces of each T-shaped sliding plate.

[0011] Preferably, a cross-shaped connecting plate is placed suspended above the central seat. The four ends of the cross-shaped connecting plate are fixedly connected to the top ends of the corresponding rectangular racks. Driven gears are concentrically fixedly sleeved in the middle of each driven shaft, and each rectangular rack is meshed and connected to the adjacent driven gear.

[0012] Preferably, a T-shaped rotating hole is opened in the middle of the top surface of the central seat. A T-shaped rotating shaft is rotatably engaged inside the T-shaped rotating hole. A first threaded hole is opened in the middle of the cross-shaped connecting plate. A first bolt connected by threading is inserted inside the first threaded hole, and the bottom end of the first bolt is fixedly connected to the top end of the T-shaped rotating shaft.

[0013] Preferably, quarter-circle-shaped limiting chutes are opened on the top surfaces of the first support plate, the second support plate, and the third support plate. Limiting pin shafts are fixedly provided on the bottom surfaces of the second support plate, the third support plate, and the fourth support plate. The bottom end of each limiting pin shaft is slidably engaged inside the corresponding limiting chute.

[0014] Preferably, second threaded holes are opened on the top surfaces of the connecting seats located in the middle of the four side edges of the "field"-shaped grid. A second bolt is inserted inside the I-shaped sleeve, and the bottom end of the second bolt is spirally inserted inside the second threaded hole, and the I-shaped sleeve is made of hard rubber material.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the "field" - shaped grid structure enables the support net to be modularly installed with this grid as a unit. In roadway support, multiple "field" - shaped grid units can be assembled first, and then these units are spliced together, just like splicing building blocks. This installation method is not only convenient and fast, but also when a local support net is damaged, it is convenient to replace a single "field" - shaped grid unit, reducing the maintenance time and cost. 2. In the present invention, after the four support plates are sequentially rotated and unfolded to form a rectangular plate shape, the pressure will be transmitted to the entire support structure through the connection points between the support plates. Their connection structure can better disperse the pressure, effectively enhancing the stability of the roadway. Since the support plates form a rectangular plate shape by rotating and unfolding, the connection part has good force - conduction performance, thus enhancing the overall compressive and anti - deformation capabilities of the support plates. The support plates that are sequentially rotated and unfolded can be adjusted according to the actual situation to flexibly adapt to various shapes and can flexibly cope with complex geological changes. 3. A support net formed by a central seat and eight connecting seats in cooperation with a central connecting rod and a support connecting rod forms a spatially stable structure, which can effectively enhance the anti - bending and anti - tensile capabilities of the entire support system, better resist deformation, and enhance the stability of the roadway. 4. The "field" - shaped grid can be folded or unfolded as needed, and the support plates are rotated and unfolded to cooperate with each other, which can greatly save storage and transportation space. In summary, the mine support net adopted in the present invention can effectively enhance the stability of the roadway. Its "field" - shaped grid structure can evenly disperse pressure and prevent local collapse. It is convenient to cooperate with bolts and other supports for joint support, and is convenient for positioning and modular operation during installation. The foldable support plates can save space and transportation costs. After unfolding, they fit the roadway wall, can flexibly adapt to various shapes, and improve the overall support efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is an exploded schematic diagram of the overall structure of the present invention; Figure 3 is a schematic diagram of the structure of the "field" - shaped grid in the present invention; Figure 4 is an exploded schematic diagram of the "field" - shaped grid in the present invention; Figure 5 is a schematic diagram of the folding and closing of the "field" - shaped grid in the present invention; Figure 6Schematic diagram of the cross connecting plate and the rectangular rack in the present invention; Figure 7 Explosion diagram of the cross connecting plate and the rectangular rack in the present invention; Figure 8 Explosion diagram of the first support plate, the second support plate, the third support plate and the fourth support plate in the present invention; Numbers in the figure: 1. Central seat; 11. U-shaped ear seat; 12. Driven shaft; 13. Driven gear; 14. T-shaped slide plate; 15. Rectangular rack; 16. T-shaped rotating shaft; 17. First bolt; 18. Cross connecting plate; 2. Central connecting rod; 21. Widened ear seat; 22. First U-shaped seat; 23. Connecting seat; 24. Single ear seat; 25. Support connecting rod; 26. Second U-shaped seat; 27. Anchor bolt; 28. External connecting rod; 29. Third U-shaped seat; 3. I-shaped sleeve; 31. Second bolt; 32. Collar; 33. First support plate; 34. Second support plate; 35. Third support plate; 36. Fourth support plate; 37. Limit chute; 38. Limit pin shaft. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Embodiment 1: This embodiment provides a mine support net. Refer to Figure 1-8 , including a central seat 1 and eight connecting seats 23, and a "field" character grid centered on the central seat 1 is formed by the central seat 1 and the eight connecting seats 23; A "field" character grid is formed centered on the central seat 1. This structure enables the force to be evenly distributed on the entire support net. Due to the symmetry of the "field" character grid, the pressure borne by each connecting seat 23 and the central seat 1 is relatively balanced; Four sides of the central seat 1 are all installed with centrally connected center connecting rods 2 in an articulated manner. The outer end of each center connecting rod 2 is articulated with an adjacent connecting seat 23 in an articulated manner, and a support connecting rod 25 in an articulated manner is installed between a pair of adjacent connecting seats 23; The middle parts of the connecting seats 23 located at the four corners of the "field" character grid are all provided with bolt holes for anchor bolts, and a penetrating anchor bolt 27 is inserted into each bolt hole for anchor bolt; On the top surfaces of the connecting seats 23 located in the middle of the four sides of the "field" character grid, I-shaped sleeves 3 are installed, and four stacked collars 32 are sleeved on the I-shaped sleeves 3; Four collars 32 are successively fixed with a first support plate 33, a second support plate 34, a third support plate 35, and a fourth support plate 36 that are rotationally unfolded from bottom to top; An "eight-square grid" formed by connecting eight connecting seats 23 and a central seat 1 constitutes a spatially stable structure. Compared with a simple linear connection support net, this grid structure can better resist deformation; Just as in architecture, the stability of a frame structure is higher than that of a simple rod-shaped structure, the "eight-square grid" of the mine support net can effectively enhance the bending and tensile resistance of the entire support system and better maintain the shape and stability of the roadway.

[0019] Embodiment 2: On the basis of Embodiment 1, this embodiment further includes the following content: In the specific implementation process, as Figure 2 and Figure 4 shown, single-ear seats 24 are fixedly provided on four sides of each connecting seat 23, second U-shaped seats 26 are fixedly provided at both ends of the support connecting rod 25, and each second U-shaped seat 26 is hingedly engaged on the corresponding single-ear seat 24; under the cooperation of the hinge action between the support connecting rod 25 and the single-ear seat 24, the eight connecting seats 23 can be evenly unfolded and distributed around the central seat 1 to form an "eight-square grid" structure; Adjacent "eight-square grids" are installed on the four outer sides of the "eight-square grid", and a pair of adjacent "eight-square grids" are connected by three external connecting rods 28. Third U-shaped seats 29 are fixedly provided at both ends of each external connecting rod 28, and each third U-shaped seat 29 is hingedly engaged on the corresponding single-ear seat 24 to movably connect a pair of adjacent "eight-square grids" through the external connecting rod 28; Reinforced ear seats 21 are fixedly provided at the inner ends of each central connecting rod 2, first U-shaped seats 22 are fixedly provided at the outer ends of each central connecting rod 2, and each first U-shaped seat 22 is hingedly engaged on the corresponding single-ear seat 24; U-shaped ear seats 11 are fixedly provided on four sides of the central seat 1, each U-shaped ear seat 11 is hingedly engaged on the adjacent reinforced ear seat 21, a driven shaft 12 distributed through is rotatably inserted inside the opening of each U-shaped ear seat 11, and both ends of each driven shaft 12 are fixedly connected to the corresponding reinforced ear seat 21; The setting of the central seat 1 provides a clear central reference point for the installation of the entire support net. During the installation process, the staff can first determine the position of the central seat 1, and then easily determine the positions of the eight connecting seats 23 according to the layout of the "eight-square grid", thereby improving the installation efficiency of the support net; The central seat 1 and the connecting seat 23 can serve as connection nodes and are conveniently connected to the fixing device of the bolt 27. The bolt 27 can pass through the bolt hole on the connecting seat 23 to firmly fix the support net on the roadway wall, so that the entire support system forms an organic whole and jointly plays a support role.

[0020] Embodiment 3: On the basis of Embodiment 2, this embodiment further includes the following content: As Figure 6 and Figure 7 shown, T-shaped chutes are provided on the inner side walls of the openings of each U-shaped ear seat 11. T-shaped sliding plates 14 are slidably engaged inside each T-shaped chute. Rectangular racks 15 are fixedly provided on the outer side surfaces of each T-shaped sliding plate 14. The T-shaped sliding plates 14 can slide upward along the T-shaped chutes; Above the center seat 1, a suspended cross connecting plate 18 is provided. The four end parts of the cross connecting plate 18 are fixedly connected to the top end parts of the corresponding rectangular racks 15. Concentrically fixed driven gears 13 are sleeved on the middle parts of each driven shaft 12. Each rectangular rack 15 is meshed and connected with the adjacent driven gear 13. The rectangular rack 15 can drive the driven gear 13, the driven shaft 12, the widened ear seat 21, the center connecting rod 2 and the first U-shaped seat 22 to be in a hinged and unfolded state along the U-shaped ear seat 11 outward; A T-shaped rotating hole is provided in the middle of the top surface of the center seat 1. A T-shaped rotating shaft 16 is rotatably engaged inside the T-shaped rotating hole. A first threaded hole is provided in the middle of the cross connecting plate 18. A first bolt 17 connected by thread is inserted inside the first threaded hole. The bottom end part of the first bolt 17 is fixedly connected to the top end part of the T-shaped rotating shaft 16. The first bolt 17 can drive the T-shaped rotating shaft 16 to rotate along the T-shaped rotating hole. The first bolt 17 acts spirally with the first threaded hole on the cross connecting plate 18 to drive the cross connecting plate 18 and the rectangular rack 15 to slide upward; In a complex mine roadway support environment, it may be necessary to combine multiple support methods. The "field" - shaped grid support net can be flexibly combined with other support materials such as steel belts and supports. Its regular grid structure is beneficial to the fitting with the steel belt. The force of the support net is transmitted to a larger range through the steel belt. At the same time, it can also provide a better attachment surface for the support, enhancing the synergy of the entire support system.

[0021] Embodiment 4: On the basis of Embodiment 3, this embodiment further includes the following content: As Figure 2 and Figure 8 shown, quarter - circular limiting chutes 37 are provided on the top surfaces of the first support plate 33, the second support plate 34, and the third support plate 35. Limiting pins 38 are fixedly provided on the bottom surfaces of the second support plate 34, the third support plate 35, and the fourth support plate 36. The bottom end part of each limiting pin 38 is slidably engaged inside the corresponding limiting chute 37; On the top surfaces of the connecting seats 23 located in the middle of the four side edges of the "field" - shaped grid, second threaded holes are provided. A second bolt 31 is inserted inside the I - shaped sleeve 3, and the bottom end of the second bolt 31 is spirally inserted into the second threaded hole. The I - shaped sleeve 3 is made of hard rubber. Rotating the second bolt 31 makes the second bolt 31 and the second threaded hole in a locked state, and drives the I - shaped sleeve 3 to be compressed and deformed, so as to stack and fix four adjacent collar rings 32; When not unfolded, the first support plate 33, the second support plate 34, the third support plate 35, and the fourth support plate 36 are in a folded or retracted state. This compact structure can greatly save storage and transportation space; since the support plates can be folded, multiple such foldable support plates can be stacked together during transportation, which increases the number of support plates transported each time and improves the transportation efficiency; When the shape is irregular or there are local narrow areas, etc., the successively rotated and unfolded support plates can be adjusted according to the actual situation; during the installation process, if it is found that the position of a certain support plate is inappropriate, its angle and position can be relatively easily adjusted to make the installation of the support plate more accurate and improve the support effect.

[0022] Specifically, the working principle and operation method of the present invention are as follows: Step 1, the initial state of the "field" - shaped grid is the folded and closed state as shown. Place the "field" - shaped grid in the middle of the ground to be supported. Rotate the first bolt 17, and the first bolt 17 drives the T - shaped rotating shaft 16 to rotate along the T - shaped rotating hole. The first bolt 17 acts in a spiral manner with the first threaded hole on the cross - shaped connecting plate 18, driving the cross - shaped connecting plate 18, the rectangular rack 15, and the T - shaped sliding plate 14 to slide upward along the T - shaped sliding groove; Figure 5 Step 2, the rectangular rack 15 meshes with and drives the driven gear 13, the driven shaft 12, the widened ear seat 21, the central connecting rod 2, and the first U - shaped seat 22 to be in an articulated and unfolded state outward along the U - shaped ear seat 11. With the cooperation of the articulated action of the support connecting rod 25 and the single - ear seat 24, eight connecting seats 23 are driven to be evenly unfolded and distributed around the central seat 1, forming the unfolded "field" - shaped grid state as shown in Figure 3; Step 3, take the anchor bolts 27 and insert them into the anchor bolt holes at the four corners in turn and fix them on the ground to form the installation and fixation of the "field" - shaped grid; repeat the above operation to install and fix several "field" - shaped grids in the same way, and then movably connect a pair of adjacent "field" - shaped grids through the external connecting rod 28; Step 4, take the I - shaped sleeve 3 and insert the second bolt 31 into the second threaded hole on the connecting seat 23 on the top surface of the "field" - shaped grid, and rotate the second bolt 31 to make the I - shaped sleeve 3 compress and deform, so as to stack and fix four adjacent collar rings 32; Step 4: Place the I-shaped sleeve 3 on the corresponding connecting seat 23, and rotate the second bolt 31 to pass through the I-shaped sleeve 3 and insert it into the second threaded hole on the connecting seat 23, making the second bolt 31 and the second threaded hole in a loose state. Then, sequentially rotate to unfold the first support plate 33, the second support plate 34, the third support plate 35, and the fourth support plate 36, driving the limit pin 38 to slide along the limit chute 37, so that after the first support plate 33, the second support plate 34, the third support plate 35, and the fourth support plate 36 are unfolded, they are as Figure 1 shown; Step 5: Rotate the second bolt 31 to make the second bolt 31 and the second threaded hole in a locked state, and drive the I-shaped sleeve 3 to be compressed and deformed, superposing and fixing four adjacent collar rings 32, and further installing and fixing the unfolded first support plate 33, the second support plate 34, the third support plate 35, and the fourth support plate 36.

[0023] In summary, the mine support net adopted by the present invention can effectively enhance the stability of the roadway. Its "field" - shaped grid structure can evenly disperse the pressure and prevent local collapse; it is convenient to cooperate with support members such as bolts 27 for support, with convenient positioning and modular operation during installation; the foldable support plates can save space and transportation costs, fit the roadway wall after unfolding, and flexibly adapt to various shapes, improving the overall support efficiency.

[0024] The above - mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A mining support net, characterized in that: It includes a central seat (1) and eight connecting seats (23), and a central seat (1) and eight connecting seats (23) together form a "field" - shaped grid centered on the central seat (1). Four side faces of the central seat (1) are all installed with centrally - hinged central connecting rods (2). The outer end of each central connecting rod (2) is movably hinged to an adjacent connecting seat (23), and a support connecting rod (25) is movably hinged between a pair of adjacent connecting seats (23). In the middle of the connecting seats (23) at the four corners of the "field" - shaped grid, bolt holes are provided, and a bolt (27) penetratingly distributed is inserted into each bolt hole. On the top surfaces of the connecting seats (23) in the middle of the four sides of the "field" - shaped grid, I - shaped sleeves (3) are installed, and four stacked collar rings (32) are sleeved on the I - shaped sleeves (3). Four of the collar rings (32) are successively and fixedly provided with first support plates (33), second support plates (34), third support plates (35), and fourth support plates (36) that are rotationally unfolded from bottom to top.

2. A mining support net according to claim 1, characterized in that: On the four side faces of each connecting seat (23), single - ear seats (24) are fixedly provided. At both ends of the support connecting rod (25), second U - shaped seats (26) are fixedly provided, and each second U - shaped seat (26) is hinged and engaged with the corresponding single - ear seat (24).

3. A mining support net according to claim 1 or 2, characterized in that: Adjacent "field" - shaped grids are installed on the four outer sides of the "field" - shaped grid, and a pair of adjacent "field" - shaped grids are connected by three external connecting rods (28). At both ends of each external connecting rod (28), third U - shaped seats (29) are fixedly provided, and each third U - shaped seat (29) is hinged and engaged with the corresponding single - ear seat (24).

4. A mining support net according to claim 3, characterized in that: At the inner end of each central connecting rod (2), a widened ear seat (21) is fixedly provided. At the outer end of each central connecting rod (2), a first U - shaped seat (22) is fixedly provided, and each first U - shaped seat (22) is hinged and engaged with the corresponding single - ear seat (24).

5. A mining support net according to claim 4, characterized in that: On the four side faces of the central seat (1), U - shaped ear seats (11) are fixedly provided. Each U - shaped ear seat (11) is hinged and engaged with the adjacent widened ear seat (21). Inside the opening of each U - shaped ear seat (11), a penetratingly distributed driven shaft (12) is rotatably inserted, and both ends of each driven shaft (12) are fixedly connected to the corresponding widened ear seat (21).

6. A mining support net according to claim 5, characterized in that: On the inner side wall of the opening of each U - shaped ear seat (11), a T - shaped sliding groove is provided, and a T - shaped sliding plate (14) is slidably engaged in each T - shaped sliding groove. On the outer side face of each T - shaped sliding plate (14), a rectangular rack (15) is fixedly provided.

7. A mining support net according to claim 6, characterized in that: Above the central seat (1), a cross - connecting plate (18) is placed suspended. The four ends of the cross - connecting plate (18) are fixedly connected to the top ends of the corresponding rectangular racks (15). In the middle of each driven shaft (12), a concentrically - fixedly - sleeved driven gear (13) is provided, and each rectangular rack (15) is meshed with the adjacent driven gear (13).

8. A mining support net according to claim 7, characterized in that: A T-shaped rotating hole is formed in the middle of the top surface of the central seat (1), a T-shaped rotating shaft (16) is rotationally engaged inside the T-shaped rotating hole, a first threaded hole is formed in the middle of the cross-shaped connecting plate (18), a first bolt (17) connected by threads is inserted inside the first threaded hole, and the bottom end of the first bolt (17) is fixedly connected to the top end of the T-shaped rotating shaft (16).

9. A mining support net according to claim 8, characterized in that: Quarter-circle-shaped limiting sliding grooves (37) are formed in the top surfaces of the first support plate (33), the second support plate (34), and the third support plate (35), limiting pin shafts (38) are fixedly arranged on the bottom surfaces of the second support plate (34), the third support plate (35), and the fourth support plate (36), and the bottom end of each limiting pin shaft (38) is slidably engaged inside the corresponding limiting sliding groove (37).

10. A mining support net according to claim 9, characterized in that: Second threaded holes are formed in the top surfaces of the connecting seats (23) located in the middle of the four side edges of the "field"-shaped grid, a second bolt (31) is inserted inside the I-shaped sleeve (3), the bottom end of the second bolt (31) is spirally inserted inside the second threaded hole, and the I-shaped sleeve (3) is made of hard rubber material.

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