A safety protection device for mining operations

Abstract

This utility model relates to the field of protective device technology, specifically a mine safety protection device. It includes two connecting frames rotatably connected by hinges. Each connecting frame has a first protective net slidably connected inside. A second protective net is fixed between the two first protective nets by bolts, with the bottom surface of the second protective net abutting the top surface of the connecting frame. The advantages of this utility model are: the support structure can be assembled simply by rotating the support rod around the connecting rod to a suitable angle, locking it with bolts, and then fixing it with screw fasteners that engage with the locking holes. Simultaneously, the first protective net is slidably connected to the connecting frame via limiting pins and limiting slots, and the second protective net is snapped into the connecting frame via positioning pins. This eliminates the need for complex welding or numerous bolt tightening, allowing for rapid assembly to form a complete protection system, significantly shortening installation time and improving construction efficiency. Furthermore, disassembly can be performed by reversing the operation, reducing repetitive labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of protective device technology, and in particular to a protective device for safe mining operations. Background Technology

[0002] Mine safety protection devices (mine entrance protection) are specialized facilities used in mining operations to ensure the safety of personnel and equipment and prevent accidents. Their core definition is: a safety protection system that uses physical barriers, warning signs, and auxiliary structures to close or isolate mine entrances. This device typically consists of a frame structure, protective netting (panels), warning components, and fixing components. The frame structure is usually welded from high-strength steel or alloy materials to form a stable supporting framework. The protective netting (panels) covers the frame surface and can be made of metal mesh, steel plates, or composite materials to prevent personnel and materials from falling and to prevent external debris from entering the entrance. Warning components include reflective strips, warning signs, and audible and visual alarms to alert workers to the dangers at the entrance. The fixing components securely connect the protective device to the ground or rock wall using anchors, bolts, etc.

[0003] Currently, the temporary construction methods used for mine entrance protection devices present significant efficiency bottlenecks and safety hazards in practical applications. Existing protection devices mostly employ on-site assembly, requiring construction workers to carry steel, bolts, protective netting, and other components to the mine entrance for temporary construction through welding and bolt tightening. This process involves multiple steps, including material handling and structural assembly, is cumbersome, and relies heavily on manual labor. When these temporary protective devices are altered during mining operations or the mine entrance becomes abandoned, they must be dismantled and relocated again, incurring additional labor costs and delaying mining progress due to prolonged construction and dismantling work. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a mine safety protection device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a mine safety protection device, comprising two connecting frames rotatably connected by hinges, a first protective net slidably connected inside each connecting frame, a second protective net fixedly installed between the two first protective nets by bolts, the bottom surface of the second protective net being in contact with the top surface of the connecting frame, an assembly frame fixedly to the end of each first protective net away from the connecting frame by bolts, two symmetrically arranged U-shaped frames fixedly connected to the bottom surface of each assembly frame, a connecting rod fixedly connected to the inner wall of each U-shaped frame, a support rod rotatably connected to the outer surface of each connecting rod, the support rod being installed inside the U-shaped frame by bolts, a mounting bracket slidably connected between two corresponding support rods, both mounting brackets being perpendicular to the first protective net, two symmetrically arranged screw fasteners rotatably connected to one side of each mounting bracket, and the two support rods being installed inside the mounting bracket by the two screw fasteners.

[0007] Preferably, one side of each of the above solutions has a plurality of linearly arrayed locking holes, and the screw portion of the screw fastener is slidably connected to the support rod through the locking holes.

[0008] Preferably, in any of the above schemes, the front and rear sides of the first protective net are fixedly connected with limit pins, the front and rear sides of the connecting frame are provided with limit slots, and the two limit pins are slidably connected to the connecting frame through the limit slots.

[0009] Preferably, in any of the above schemes, the bottom surface of the second protective net is fixedly connected with a number of symmetrically arranged positioning pins, and the second protective net is engaged with the two connecting frames through the number of positioning pins.

[0010] Preferably, in any of the above solutions, two front-to-back corresponding guide rods are fixedly connected to the bottom of each connecting frame, and two front-to-back corresponding guide sleeves are fixedly connected to the bottom surface of each first protective net, with the two guide rods slidably connected to the two guide sleeves respectively.

[0011] Preferably, in any of the above schemes, the bottom surface of each of the first protective nets is fixedly connected with a plurality of linear array pins, and the first protective nets are snapped into the assembly frame by the plurality of pins.

[0012] Preferably, in any of the above solutions, a rotating hole is provided through one side of each support rod, and the support rod is rotatably connected to the connecting rod through the rotating hole.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. This mine safety protection device effectively solves the problems of inconvenient transportation and cumbersome installation of traditional protection devices through its hinge and rotating structure design. Two connecting frames are connected by a hinge and can be folded inwards during transportation, allowing the first and second protective nets and related components to fit tightly together, significantly reducing the overall size of the device and facilitating handling and loading. Upon arrival at the usage location, the connecting frames are unfolded, and the device can be quickly supported and fixed using the rotating support rods within the U-shaped frames. Simply rotate the support rods around the connecting rods to the appropriate angle, lock them with bolts, and then secure them with screw fasteners and locking holes to complete the support structure setup. Simultaneously, the first protective net is slidably connected to the connecting frames via limit pins and limit slots, while the second protective net is snapped into the connecting frames via positioning pins. This eliminates the need for complex welding or numerous bolt tightening, allowing for rapid assembly to form a complete protection system, significantly shortening installation time, improving construction efficiency, and reducing repetitive labor intensity during disassembly through reverse operation.

[0014] 2. The device, through its multiple sliding and adjusting structures, can flexibly adapt to mine entrances of different sizes. The guide sleeve at the bottom of the first protective net slides in conjunction with the guide rod of the connecting frame. Construction personnel can slide the first protective net up and down along the guide rod according to the required height of the entrance, adjusting its height, and lock its position using limit pins and limit slots. The two mounting brackets are connected to the support rod via screw fasteners. After loosening the screw fasteners, the mounting brackets can slide along the support rod, freely adjusting the distance between the two mounting brackets. Based on this, construction personnel can select a second protective net of appropriate length according to the actual width of the entrance and fix it between the two first protective nets with bolts. In addition, the first protective net can also be snapped onto the mounting bracket via pins, further enhancing structural stability. This modular and adjustable design allows the protective device to adapt to various irregular or varying sizes of mine entrances, eliminating the need for on-site cutting or custom parts, thus improving the device's versatility and applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the assembly of this utility model; Figure 2 This is an exploded structural diagram of the assembly of this utility model; Figure 3 This is a schematic diagram of the connecting frame of this utility model; Figure 4 This is a schematic diagram of the structure of the first protective net of this utility model; Figure 5 This is a schematic diagram of the mounting bracket of this utility model.

[0016] In the diagram: 1-Connecting frame, 2-First protective net, 3-Second protective net, 4-Assembly frame, 5-U-shaped frame, 6-Connecting rod, 7-Support rod, 8-Mounting bracket, 9-Screw fastener, 10-Locking hole, 11-Limit pin, 12-Limit groove, 13-Positioning pin, 14-Guide rod, 15-Guide sleeve, 16-Pin shaft, 17-Rotation hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0018] like Figures 1 to 5 As shown, a mine safety protection device includes two connecting frames 1 rotatably connected by hinges. A first protective net 2 is slidably connected inside each connecting frame 1. A second protective net 3 is fixedly installed between the two first protective nets 2 by bolts. The bottom surface of the second protective net 3 is in contact with the top surface of the connecting frame 1. An assembly frame 4 is fixedly fixed to the end of each first protective net 2 away from the connecting frame 1 by bolts. Two symmetrically arranged U-shaped frames 5 are fixedly connected to the bottom surface of each assembly frame 4. A connecting rod 6 is fixedly connected to the inner wall of each U-shaped frame 5. A support rod 7 is rotatably connected to the outer surface of each connecting rod 6. The support rod 7 is installed inside the U-shaped frame 5 by bolts. A mounting frame 8 is slidably connected between the two corresponding support rods 7. Both mounting frames 8 are perpendicular to the first protective net 2. Two symmetrically arranged screw fasteners 9 are rotatably connected to one side of the mounting frame 8. The two support rods 7 are installed inside the mounting frame 8 by the two screw fasteners 9.

[0019] As an optional technical solution of this utility model, each support rod 7 has a plurality of linearly arrayed locking holes 10 through one side. The screw part of the screw fastener 9 is slidably connected to the support rod 7 through the locking holes 10. The screw part of the screw fastener 9 is inserted into the locking holes 10 at different positions to fix the tilt angle of the support rod 7, so as to adapt to the support requirements of different terrains or the edge of the opening. When it is necessary to adjust the overall height of the protective device, simply loosen the screw fastener 9, slide the support rod 7 to the appropriate locking hole 10 position and then tighten it again to quickly complete the adjustment, ensuring that the protective device is stably installed while meeting diverse usage scenarios.

[0020] As an optional technical solution of this utility model, the first protective net 2 is fixedly connected to both its front and rear sides with limiting pins 11, and the connecting frame 1 has limiting slots 12 extending through both its front and rear sides. Both limiting pins 11 are slidably connected to the connecting frame 1 through the limiting slots 12. The limiting pins 11 slide along the limiting slots 12, preventing the first protective net 2 from shifting or shaking within the connecting frame 1, ensuring it remains vertical during vertical movement. Simultaneously, this design facilitates the quick assembly and disassembly of the first protective net 2. When the protective height needs to be adjusted, simply slide the first protective net 2 along the limiting slots 12 to the target position to flexibly adjust the protective range, enhancing the practicality of the device.

[0021] As an optional technical solution of this utility model, the bottom surface of the second protective net 3 is fixedly connected with several symmetrically arranged positioning pins 13. The second protective net 3 is engaged with the two connecting frames 1 through the positioning pins 13. During installation, the positioning pins 13 are aligned with the corresponding slots on the connecting frames 1 and inserted to complete the precise positioning and connection between the second protective net 3 and the connecting frames 1, without the need for additional tools or complicated operations. This engagement method not only ensures a tight fit between the second protective net 3 and the first protective net 2, improving the overall protective strength, but also facilitates the replacement of second protective nets 3 of different specifications according to the opening size, improving the versatility of the device.

[0022] As an optional technical solution of this utility model, two front-to-back corresponding guide rods 14 are fixedly connected to the bottom of each connecting frame 1, and two front-to-back corresponding guide sleeves 15 are fixedly connected to the bottom surface of each first protective net 2. The two guide rods 14 are slidably connected to the two guide sleeves 15 respectively. The guide rods 14 are inserted into the guide sleeves 15, providing a stable track for the up-and-down movement of the first protective net 2 and preventing it from getting stuck or tilting during sliding. At the same time, this structure can disperse the external force on the first protective net 2, prevent deformation or damage caused by uneven force, and ensure the reliability and safety of the protective device during use.

[0023] As an optional technical solution of this utility model, a plurality of linearly arrayed pins 16 are fixedly connected to the bottom surface of each first protective net 2. The first protective net 2 is engaged with the assembly frame 4 through the plurality of pins 16. After the pins 16 are inserted into the corresponding holes of the assembly frame 4, the lateral displacement of the first protective net 2 can be restricted, so that the protective net and the supporting structure form a stable whole. When the protective device is subjected to external impact, the pins 16 can evenly transmit the force to the mounting bracket 8 and the support rod 7, avoiding excessive local stress and improving the impact resistance and durability of the protective device.

[0024] As an optional technical solution of this utility model, each support rod 7 has a through-hole 17 on one side. The support rod 7 is rotatably connected to the connecting rod 6 through the through-hole 17. When transporting or storing the protective device, the support rod 7 can be rotated and folded around the connecting rod 6 to reduce the size of the device. During installation, the angle of the support rod 7 can be freely adjusted according to the actual terrain and the shape of the opening to ensure that it fits tightly against the ground or rock wall. This rotating structure design is simple and practical, ensuring both the convenience of adjusting the support rod 7 and its stability in the fixed state, providing a reliable guarantee for the installation and use of the protective device.

[0025] A mine safety protection device, the working principle of which is as follows: 1): Unfold the connecting frame 1. The device can be quickly supported and fixed by using the support rod 7 that is rotatably connected inside the U-shaped frame 5. Simply rotate the support rod 7 around the connecting rod 6 to a suitable angle and lock it with bolts.

[0026] 2): The support structure can be built by fixing the screw fastener 9 with the locking hole 10.

[0027] 3): The first protective net 2 and the connecting frame 1 are slidably connected by the limiting pin 11 and the limiting groove 12. The second protective net 3 is snapped into the connecting frame 1 by the positioning pin 13. Without complicated welding or a large number of bolts, a complete protective system can be quickly assembled.

[0028] In summary, this mine safety protection device, through its hinge and rotating structure design, effectively solves the problems of inconvenient transportation and cumbersome installation of traditional protection devices. The two connecting frames 1 are connected by hinges and can be folded inwards during transportation, allowing the first protective net 2, the second protective net 3, and related components to fit tightly together, significantly reducing the overall size of the device and facilitating handling and loading. Upon arrival at the usage location, the connecting frame 1 is unfolded, and the device can be quickly supported and fixed using the support rod 7 rotatably connected within the U-shaped frame 5. Simply rotate the support rod 7 around the connecting rod 6 to a suitable angle, lock it with bolts, and then secure it using the screw fasteners 9 and locking holes 10 to complete the support structure setup. Meanwhile, the first protective net 2 is slidably connected to the connecting frame 1 via limiting pins 11 and limiting slots 12, and the second protective net 3 is snapped into the connecting frame 1 via positioning pins 13. This allows for rapid assembly of a complete protective system without complex welding or numerous bolts, significantly shortening installation time and improving construction efficiency. Disassembly is performed in reverse, reducing repetitive labor intensity. The multiple sliding and adjusting structures allow for flexible adaptation to mine entrances of different sizes. The guide sleeve 15 at the bottom of the first protective net 2 slidably engages with the guide rod 14 of the connecting frame 1. Construction personnel can slide the first protective net 2 up and down along the guide rod 14 to adjust its height according to the required entrance height, and lock its position via limiting pins 11 and limiting slots 12. The two mounting brackets 8 are connected to the support rod 7 via screw fasteners 9. After loosening the screw fasteners 9, the mounting brackets 8 can slide along the support rod 7, freely adjusting the distance between the two mounting brackets 8. Based on this, construction personnel can select a suitable length of second protective net 3 according to the actual entrance width and fix it between the two first protective nets 2 with bolts. Furthermore, the first protective net 2 can be snapped into the mounting frame 8 via pin 16, further enhancing structural stability. This modular and adjustable design allows the protective device to adapt to various irregular or sized mine entrances without requiring on-site cutting or custom parts, thus improving the device's versatility and applicability.

Claims

1. A mine safety extraction shield, characterized by: The system includes two connecting frames (1) that are rotatably connected by hinges. Each connecting frame (1) has a first protective net (2) slidably connected inside. A second protective net (3) is bolted between the two first protective nets (2). The bottom surface of the second protective net (3) is flush with the top surface of the connecting frame (1). An assembly frame (4) is bolted to one end of each first protective net (2) away from the connecting frame (1). Two symmetrically arranged U-shaped frames (5) are fixedly connected to the bottom surface of each assembly frame (4). Each U-shaped frame (5)... A connecting rod (6) is fixedly connected to the inner wall. A support rod (7) is rotatably connected to the outer surface of each connecting rod (6). The support rod (7) is installed inside the U-shaped frame (5) by bolts. A mounting bracket (8) is slidably connected between two front and rear corresponding support rods (7). Both mounting brackets (8) are perpendicular to the first protective net (2). Two symmetrically arranged screw fasteners (9) are rotatably connected to one side of the mounting bracket (8). The two support rods (7) are installed inside the mounting bracket (8) by the two screw fasteners (9).

2. The mine safety protection device according to claim 1, characterized in that: Each of the support rods (7) has a plurality of linear array locking holes (10) through one side, and the screw part of the screw fastener (9) is slidably connected to the support rod (7) through the locking holes (10).

3. A mine safety protection device according to claim 2, characterized in that: The first protective net (2) is fixedly connected to the front and rear sides with limit pins (11), and the front and rear sides of the connecting frame (1) are opened through with limit slots (12). The two limit pins (11) are slidably connected to the connecting frame (1) through the limit slots (12).

4. A mine safety protection device according to claim 3, characterized in that: The bottom surface of the second protective net (3) is fixedly connected with several symmetrically arranged positioning pins (13), and the second protective net (3) is engaged with the two connecting frames (1) through several positioning pins (13).

5. A mine safety protection device according to claim 4, characterized in that: Two front-to-back guide rods (14) are fixedly connected to the bottom of each connecting frame (1), and two front-to-back guide sleeves (15) are fixedly connected to the bottom surface of each first protective net (2). The two guide rods (14) are slidably connected to the two guide sleeves (15) respectively.

6. A mine safety protection device according to claim 5, characterized in that: Each of the first protective nets (2) has a number of linear array pins (16) fixedly connected to its bottom surface. The first protective net (2) is snapped into the assembly frame (4) by the number of pins (16).

7. A mine safety protection device according to claim 6, characterized in that: Each of the support rods (7) has a through-hole (17) on one side, and the support rod (7) is rotatably connected to the connecting rod (6) through the through-hole (17).

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