A blast flyrock protection grid

Abstract

The utility model relates to the technical field of underground blasting, specifically is a kind of underground blasting fly rock protection grid, including first protective frame and second protective frame, the lower end of second protective frame is hinged with the upper end of first protective frame, the surface of first protective frame is slidably connected with two groups of first telescopic frame, the surface of second protective frame is slidably connected with two groups of second telescopic frame, the inner side of first protective frame, first telescopic frame, second protective frame and second telescopic frame are sequentially fixedly connected with metal protective plate, polymer buffer layer and elastic inner lining;By utilizing metal protective plate, polymer buffer layer and elastic inner lining three layers cooperation cooperation, effectively improve the protection effect of protection grid, simultaneously, after first telescopic frame and second telescopic frame are unfolded to two sides, effectively improve the protection area, and second protective frame protects top, further improve the protection effect.

Description

Technical Field

[0001] This utility model relates to the field of underground blasting technology, specifically to a protective grid for flyrock during underground blasting. Background Technology

[0002] Underground blasting refers to the process of using explosives to assist in blasting during the mining of metal or coal mines. Underground blasting operations are a core part of mining, but the flying rocks generated by blasting can easily cause equipment damage and personnel casualties. At this time, it is necessary to use protective grids to block the flying rocks.

[0003] Currently, the industry generally uses steel mesh, flexible protective netting, or concrete retaining walls as protective measures. With the popularization of deep mining, the increased blasting energy can easily cause steel mesh and flexible protective netting to deform and fail, and they cannot effectively block small particles of gravel. Although concrete walls have good protective performance, they need to be poured on-site or precast concrete walls, which is a complicated operation process and can easily obstruct the shaft, affecting mining.

[0004] Therefore, it is necessary to invent a protective grid for flyrock from underground blasting to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a protective grid for flyrock during underground blasting, in order to solve the problems in the technology where steel mesh and flexible protective mesh are prone to deformation and failure, and cannot effectively block small particles of gravel. The concrete wall construction process is also cumbersome and can easily obstruct the shaft, affecting mining.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective grid for flyrock from underground blasting, comprising a first protective frame and a second protective frame, wherein the lower end of the second protective frame is hinged and fixed to the upper end of the first protective frame, two sets of first telescopic frames are slidably connected to the surface of the first protective frame, and two sets of second telescopic frames are slidably connected to the surface of the second protective frame, wherein a metal protective plate, a polymer buffer layer and an elastic liner are sequentially fixedly connected to the inner sides of the first protective frame, the first telescopic frame, the second protective frame and the second telescopic frame.

[0007] By adopting the above technical solution, the second protective frame is unfolded upwards, and the first and second telescopic frames are pulled to both sides, effectively increasing the protection area. At the same time, the combination of metal protective plates, polymer buffer layers and elastic linings effectively improves the protection effect. It also facilitates the folding and storage of the first and second protective frames, thereby facilitating the folding and transportation of the protective grid, improving the convenience of movement and avoiding obstruction of the wellbore.

[0008] Optionally, the upper and lower sides of the front surface of the first protective frame are fixedly connected with first guide rails, and the upper and lower sides of the rear surface of the first telescopic frame are provided with first sliding grooves, with the first guide rails locked inside the first sliding grooves.

[0009] By adopting the above technical solution, the first guide rail and the first slide groove cooperate to allow the first telescopic frame to slide left and right on the surface of the first protective frame.

[0010] Optionally, the upper and lower sides of the front surface of the second protective frame are fixedly connected with second guide rails, and the upper and lower sides of the rear surface of the second telescopic frame are provided with second sliding grooves, with the second guide rails locked inside the second sliding grooves.

[0011] By adopting the above technical solution, the second guide rail cooperates with the second slide groove, allowing the second telescopic frame to slide left and right on the surface of the second protective frame.

[0012] Optionally, a first support column is fixedly connected to the middle of the front surface of the first protective frame, the surface of the first support column is provided with a first slot, and the surface of the first support column is provided with an insertion hole located above the first slot.

[0013] By adopting the above technical solution, the first support column effectively improves the structural strength of the first protective frame.

[0014] Optionally, a first telescopic rod is rotatably connected to the upper end of the first slot.

[0015] By adopting the above technical solution, the first telescopic rod is rotated and stretched outward during use, and then its lower end is brought into contact with the ground to support the first protective frame.

[0016] Optionally, a second support column is fixedly connected to the middle position of the front surface of the second protective frame, and a second slot is provided on the surface of the second support column.

[0017] By adopting the above technical solution, the second support column is used to improve the structural strength of the second protective frame.

[0018] Optionally, a second telescopic rod is rotatably connected to the upper end of the second slot.

[0019] By adopting the above technical solution, the second telescopic rod is rotated and stretched outward during use, and then its lower end is locked inside the insertion hole to support the second protective frame.

[0020] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model effectively improves the protective effect of the protective grille by using a combination of three layers: a metal protective plate, a polymer buffer layer, and an elastic inner liner. At the same time, after the first and second telescopic frames are extended to both sides, the protective area is effectively increased, and the second protective frame protects the top, further improving the protective effect. 2. This utility model retracts the first telescopic frame and the second telescopic frame on both sides to the sides of the first protective frame and the second protective frame, respectively. Then, the first telescopic rod and the second telescopic rod are retracted and inserted into the first slot and the second slot, respectively. Then, the second protective frame is folded downward, which makes it easy to fold and transport, improves the convenience of mobile transportation, and is more suitable for complex and varied terrain environments of the shaft. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 (Folded state); Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 (Half-expanded state); Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 (Fully unfolded state); Figure 4 This is a schematic diagram of the first protective frame structure of this utility model; Figure 5 This is a schematic diagram of the second protective frame structure of this utility model; Figure 6 This is a schematic diagram of the inner structure of the protective frame of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. First protective frame; 11. First support column; 12. First slot; 13. Insertion hole; 14. First guide rail; 15. First telescopic frame; 16. First slide groove; 2. Second protective frame; 21. Second support column; 22. Second slot; 23. Second guide rail; 24. Second telescopic frame; 25. Second slide groove; 3. Metal protective plate; 4. Polymer buffer layer; 5. Elastic liner; 6. First telescopic rod; 7. Second telescopic rod. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figures 1 to 6The protective grid for flyrock protection in underground blasting includes a first protective frame 1 and a second protective frame 2. The lower end of the second protective frame 2 is hinged and fixed to the upper end of the first protective frame 1. Two sets of first telescopic frames 15 are slidably connected to the surface of the first protective frame 1, and two sets of second telescopic frames 24 are slidably connected to the surface of the second protective frame 2. A metal protective plate 3, a polymer buffer layer 4, and an elastic liner 5 are sequentially fixedly connected to the inner sides of the first protective frame 1, the first telescopic frame 15, the second protective frame 2, and the second telescopic frame 24.

[0025] Among them, the first protective frame 1, the first telescopic frame 15, the second protective frame 2, and the second telescopic frame 24 are all made of steel, which effectively improves the structural strength of the protective frame. At the same time, the metal protective plate 3, the polymer buffer layer 4, and the elastic liner 5 work together in sequence to protect against underground blasting. The metal protective plate 3 effectively blocks the debris generated by the blast, and the polymer buffer layer 4 and the elastic liner 5 effectively reduce the impact force generated by the blast, thereby effectively improving the protection effect. Furthermore, by expanding the first telescopic frame 15 and the second telescopic frame 24 to both sides, the protection area is effectively increased, further improving the protection effect.

[0026] See Figure 4 and Figure 5 The first protective frame 1 has a first guide rail 14 fixedly connected to both the upper and lower sides of the front surface. The first telescopic frame 15 has a first slide groove 16 opened on both the upper and lower sides of the rear surface. The first guide rail 14 is locked inside the first slide groove 16. The second protective frame 2 has a second guide rail 23 fixedly connected to both the upper and lower sides of the front surface. The second telescopic frame 24 has a second slide groove 25 opened on both the upper and lower sides of the rear surface. The second guide rail 23 is locked inside the second slide groove 25.

[0027] Specifically, the first guide rail 14 cooperates with the first slide groove 16 to allow the first telescopic frame 15 to slide on the side of the first protective frame 1, thereby adjusting the side protection area. The second guide rail 23 cooperates with the second slide groove 25 to allow the second telescopic frame 24 to slide on the side of the second protective frame 2, thereby adjusting the top protection area.

[0028] See Figures 1 to 5 A first support column 11 is fixedly connected to the middle of the front surface of the first protective frame 1. A first slot 12 is opened on the surface of the first support column 11. An insertion hole 13 is opened on the surface of the first support column 11 above the first slot 12. A first telescopic rod 6 is rotatably connected to the upper end of the first slot 12. A second support column 21 is fixedly connected to the middle of the front surface of the second protective frame 2. A second slot 22 is opened on the surface of the second support column 21. A second telescopic rod 7 is rotatably connected to the upper end of the second slot 22.

[0029] In addition, the first telescopic rod 6 and the second telescopic rod 7 are used to support the first protective frame 1 and the second protective frame 2, respectively, and both the first telescopic rod 6 and the second telescopic rod 7 can be stretched and extended.

[0030] During use, firstly rotate the second protective frame 2 upwards, then unfold and stretch the first telescopic rod 6 and the second telescopic rod 7, then insert the lower end of the second telescopic rod 7 into the insertion hole 13 to support the second protective frame 2, then bring the lower end of the first telescopic rod 6 to the ground to support the first protective frame 1, then pull the first telescopic frame 15 and the second telescopic frame 24 to the sides respectively to freely adjust the protective area and effectively improve the protective effect.

[0031] Meanwhile, during the movement of the equipment, the first telescopic frame 15 and the second telescopic frame 24 are first slid inward to move to the side of the first protective frame 1 and the second protective frame 2. Then, the first telescopic rod 6 and the second telescopic rod 7 are retracted and rotated into the inside of the first slot 12 and the second slot 22. Next, the second protective frame 2 is rotated to the side of the first protective frame 1 and folded to the side of the first protective frame 1, which facilitates the transfer of the equipment and can adapt to the complex and varied terrain environment of the shaft.

[0032] The working principle of this utility model is as follows: By utilizing the three layers of metal protective plate 3, polymer buffer layer 4 and elastic liner 5, the protective effect of the protective grid is effectively improved. After the first telescopic frame 15 and the second telescopic frame 24 are unfolded to both sides, the protective area is effectively increased, and the second protective frame 2 protects the top, further improving the protective effect. At the same time, by retracting the first telescopic frame 15 and the second telescopic frame 24 on both sides to the sides of the first protective frame 1 and the second protective frame 2 respectively, and then retracting the first telescopic rod 6 and the second telescopic rod 7 and inserting them into the first slot 12 and the second slot 22 respectively, and then folding the second protective frame 2 downward, it is made easy to fold and transport, improving the convenience of mobile transportation and further adapting to the complex and varied terrain environment of the shaft.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A protective grid for flyrock protection in underground blasting, comprising a first protective frame (1) and a second protective frame (2), characterized in that: The lower end of the second protective frame (2) is hinged to the upper end of the first protective frame (1). Two sets of first telescopic frames (15) are slidably connected to the surface of the first protective frame (1), and two sets of second telescopic frames (24) are slidably connected to the surface of the second protective frame (2). The inner sides of the first protective frame (1), the first telescopic frame (15), the second protective frame (2), and the second telescopic frame (24) are all sequentially fixedly connected with a metal protective plate (3), a polymer buffer layer (4), and an elastic liner (5).

2. The protective grid for flyrock protection in underground blasting according to claim 1, characterized in that: The first protective frame (1) has a first guide rail (14) fixedly connected to both the upper and lower sides of the front surface, and the first telescopic frame (15) has a first slide groove (16) opened on both the upper and lower sides of the rear surface, and the first guide rail (14) is stuck inside the first slide groove (16).

3. The protective grid for flyrock protection in underground blasting according to claim 1, characterized in that: The second protective frame (2) has a second guide rail (23) fixedly connected to both the upper and lower sides of the front surface. The second telescopic frame (24) has a second slide groove (25) opened on both the upper and lower sides of the rear surface. The second guide rail (23) is locked inside the second slide groove (25).

4. The protective grid for flyrock protection in underground blasting according to claim 1, characterized in that: A first support column (11) is fixedly connected to the middle of the front surface of the first protective frame (1). A first slot (12) is opened on the surface of the first support column (11). An insertion hole (13) is opened on the surface of the first support column (11) above the first slot (12).

5. The protective grid for flyrock protection in underground blasting according to claim 4, characterized in that: The upper end of the first slot (12) is rotatably connected to the first telescopic rod (6).

6. The protective grid for flyrock protection in underground blasting according to claim 1, characterized in that: A second support column (21) is fixedly connected to the middle of the front surface of the second protective frame (2), and a second slot (22) is provided on the surface of the second support column (21).

7. The protective grid for flyrock protection in underground blasting according to claim 6, characterized in that: The upper end of the second slot (22) is rotatably connected to the second telescopic rod (7).

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