A mine safety net

Abstract

The utility model discloses a mine safety net relates to mine safety protection equipment technical field, aims at solving the problem of traditional mine safety net installation is complicated, poor flexibility and is not easy to store. The mine safety net is spliced by multiple groups of square basic net piece module, and the basic net piece module includes the module frame of lightweight alloy material quality, and the flexible net -like body is connected through multiple groups of the connector of uniform distribution in the module frame, and the flexible net -like body is made of high -strength dacron or nylon braid band vertical and horizontal cross and is fixed at the intersection point, the insertion slot of the clamping plate is set up in the left side and the upside of module frame, and the right side and the downside are equipped with the corresponding insertion board, and the adjacent module is inserted into the insertion slot through the insertion board and utilizes the fixed silk cooperation clamping plate and is fixed, and the module frame bottom positioning plate is further reinforced through the fastening band. The utility model has excellent portability and easy storage, and is convenient to install, and the modular degree is high and is strong, and is durable and economic, and is suitable for the safety protection of various scenes of mine.

Description

Technical Field

[0001] This utility model relates to the field of mine safety protection equipment technology, specifically a mine safety net. Background Technology

[0002] During mining operations, mine safety nets are commonly used to protect workers and prevent hazards such as falling ore or debris. Traditional mine safety nets are mostly monolithic structures. Monolithic safety nets take up a lot of space during transportation, are not portable, and are difficult to store, especially in the complex working environment of mines where transportation becomes significantly more difficult. Furthermore, the installation of monolithic safety nets requires multiple people working together, the process is cumbersome, and consumes a lot of manpower and time. After installation, it is difficult to flexibly adjust them according to the size and shape of the actual protected area. When part of the safety net is damaged, the entire net needs to be replaced, increasing costs and wasting resources. In addition, the splicing structure of some interlocking safety nets is not stable enough, and the joints are prone to separation under impact, significantly reducing the protective effect and failing to meet the high-intensity safety protection requirements of mines. Therefore, developing a mine safety net that is portable, easy to store, convenient to install, modular, flexible, and durable is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of traditional mine safety nets in the prior art, such as poor portability, cumbersome installation, low flexibility, and insufficient stability of some spliced ​​safety nets, and to provide a mine safety net.

[0004] To achieve the above objectives, the present invention employs the following technical means:

[0005] A mine safety net is composed of multiple sets of basic mesh modules. Each basic mesh module includes a module frame, within which a flexible mesh body is connected. The inner wall of the module frame is connected to multiple sets of evenly distributed first connectors. Slots are provided on the left and upper sides of the module frame. Two sets of clamps, arranged vertically and connected to the inner wall of the module frame, are provided at the inner opening of each slot. Insert plates corresponding to the slots on the right and lower outer walls of the module frame are respectively connected. A set of basic mesh modules passes through the slots of adjacent basic mesh modules through connected insert plates, and the clamps at the slot openings are fixedly connected to the insert plates passing through the slots by fixing wires.

[0006] Preferably, the basic mesh module is square.

[0007] Preferably, the module frame, the first connector, the clamp, and the insert are all made of lightweight alloy.

[0008] Preferably, the module frame is welded to or integrally manufactured with the first connector, clamp, and insert plate.

[0009] Preferably, the bottom of the module frame is connected to multiple sets of positioning plates, and the positioning plates are connected to fastening straps. The positioning plates of one set of basic mesh modules are attached to the positioning plates of adjacent basic mesh modules and fixed by fastening straps.

[0010] Preferably, the fastening strap is a cable tie.

[0011] Preferably, the flexible mesh body is made of high-strength polyester or nylon braided strips, which are arranged in a crisscross pattern and fixed at the intersections by high-frequency welding or riveting.

[0012] Preferably, a second connector is connected to the middle of the flexible mesh body.

[0013] Preferably, the second connector has the same structure as the first connector.

[0014] This utility model has the following beneficial effects:

[0015] 1. Excellent portability and easy storage: Since the safety net is made up of multiple sets of square basic mesh modules, each basic mesh module is small in size and light in weight. During transportation, multiple sets of modules can be stacked, which greatly reduces the space occupied during transportation. When not in use, each module can be disassembled and stored together, which is convenient to store and saves storage space, solving the problems of poor portability and difficulty in storage of traditional integrated safety nets.

[0016] 2. Extreme ease of installation: Adjacent basic mesh modules are inserted into slots via insert plates and then fixed with fixing wires and clamps. At the same time, positioning plates and fastening straps further reinforce the installation. The entire installation process is simple and requires no complicated tools or professional skills. A single person can complete the installation of some modules, which greatly reduces the difficulty of installation, saves manpower and installation time, and improves installation efficiency.

[0017] 3. High modularity and flexibility: Multiple sets of square basic mesh modules can be arbitrarily combined and spliced ​​according to the size and shape of the actual protection area, which can flexibly adapt to mine protection scenarios of different sizes and shapes, such as rectangular, polygonal and other protection areas; when the safety net is partially damaged, only the damaged basic mesh module needs to be replaced, without replacing the whole net, which reduces maintenance costs, reduces resource waste, and improves the flexibility and economy of use.

[0018] 4. Durable and economical: The modular frame and other components are made of lightweight alloy, which has the characteristics of high strength, impact resistance and wear resistance. The flexible mesh body is made of high-strength polyester or nylon woven straps and is fixed in a reliable way, which makes the safety net have excellent durability and can adapt to the harsh working environment of the mine for a long time, thus extending its service life. At the same time, the modular design reduces maintenance and replacement costs, and the cost of components such as cable ties is low. The overall production and use costs are low, which makes it economical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection between the clamping plate and the insert plate of this utility model;

[0021] Figure 3 This is a diagram showing the usage state of this utility model;

[0022] In the attached figures, the following labels are used:

[0023] Module frame 1, flexible mesh body 2, first connector 3, positioning plate 4, fastening strap 5, slot 6, clamping plate 7, fixing wire 8, insert plate 9, second connector 10. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figure 1-3 As shown, a mine safety net is composed of multiple sets of basic mesh modules. The basic mesh modules are square, and this square structure facilitates the arbitrary combination and splicing of multiple modules, which can better adapt to protection areas of different sizes and shapes, and improve the flexibility of use.

[0026] The basic mesh module includes a module frame 1, which serves as the supporting framework for the entire basic mesh module, providing a stable structural foundation for the safety net. A flexible mesh body 2 is connected within the module frame 1. The flexible mesh body 2 is the core component for achieving safety protection, effectively preventing falling rocks, debris, and other contaminants. Multiple sets of evenly distributed first connectors 3 are connected to the inner wall of the module frame 1. The first connectors 3 are used for fixing the module frame 1 to the positioning points. The multiple evenly distributed modules 1 securely fix the module frame 1 to the positioning points, preventing displacement or detachment when subjected to impact. Simultaneously, it ensures uniform stress distribution on the flexible mesh body 2, improving the overall protective performance of the safety net.

[0027] Slots 6 are provided on the left and top sides of module frame 1. Two sets of clamping plates 7, arranged vertically and connected to the inner wall of module frame 1, are located at the inner opening of each slot 6. Insert plates 9, corresponding to the slots 6 on the corresponding sides, are connected to the outer walls of the right and lower sides of module frame 1. During module assembly, a set of basic mesh modules passes through the slots 6 of adjacent basic mesh modules via connected insert plates 9. At this time, the insert plates 9 are positioned between the two sets of clamping plates 7. The clamping plates 7 at the opening of slot 6 are fixed to the insert plates 9 passing through slot 6 via fixing wires 8. The two sets of clamping plates 7 limit the movement of the insert plates 9 within the slots 6, preventing them from wobbling. Combined with the tightening effect of the fixing wires 8, this ensures that adjacent sets of basic mesh modules are firmly connected, effectively preventing separation at the joint due to impact and guaranteeing the stability of the safety net after assembly.

[0028] Module frame 1, first connector 3, clamping plate 7, and insert plate 9 are all made of lightweight alloy. Lightweight alloys are characterized by low density and high strength. While ensuring sufficient support strength and impact resistance for components such as module frame 1, they significantly reduce the weight of the entire basic mesh module, making individual basic mesh modules easier to transport and install, thus improving the portability of the safety net. Furthermore, module frame 1 is welded to or integrally manufactured with the first connector 3, clamping plate 7, and insert plate 9. This welding or integral manufacturing method ensures the firmness of the connections between components, avoiding problems where unstable component connections affect the overall performance of the safety net. It also reduces assembly steps and improves production efficiency.

[0029] The bottom of module frame 1 is connected to multiple sets of positioning plates 4, each with a fastening strap 5. The positioning plates 4 of one basic mesh module are attached to the positioning plates 4 of an adjacent basic mesh module and secured by the fastening straps 5. The positioning plates 4 and fastening straps 5 further enhance the connection stability between adjacent basic mesh modules. By binding the positioning plates 4 of adjacent modules together with the fastening straps 5, a double-fixed structure is formed, ensuring that the assembled safety net maintains overall structural stability even under significant impact, further improving the protective reliability of the safety net.

[0030] Specifically, the fastening strap 5 is a cable tie. Cable ties have the advantages of being easy to operate, having good fastening properties, and being low in cost. Using cable ties as the fastening strap 5 can simplify the fixing operation between adjacent modules, reduce the installation difficulty, and also reduce the production cost of the safety net.

[0031] The flexible mesh body 2 is made of high-strength polyester or nylon woven strips. High-strength polyester and nylon materials possess excellent abrasion resistance, tensile strength, and aging resistance, enabling them to adapt to the harsh working environment of mines and extend the service life of the safety net. The woven strips are arranged in a crisscross pattern and fixed at the intersections by high-frequency welding or riveting. This crisscross weave structure gives the flexible mesh body 2 good toughness and impact resistance, while the high-frequency welding or riveting at the intersections further enhances the strength of the connections between the woven strips, preventing them from loosening or breaking under stress and ensuring the protective effect of the flexible mesh body 2.

[0032] A second connector 10 is connected to the middle of the flexible mesh body 2. The second connector 10 has the same structure as the first connector 3. The second connector 10 can further fix and support the middle of the flexible mesh body 2, preventing the middle of the flexible mesh body 2 from sagging or being damaged due to excessive force. Especially when protecting a large area, the second connector 10 can effectively disperse the force on the flexible mesh body 2, improving the overall structural stability and protective performance of the safety net.

[0033] Working principle

[0034] I. Principles of Basic Mesh Module Function Implementation

[0035] The basic mesh module is the fundamental unit for achieving the protective function of mine safety nets. Its various structures work together to ensure that a single module has protective capabilities.

[0036] The supporting and connecting foundation of module frame 1: As a frame structure made of lightweight alloy, module frame 1 not only provides rigid support for the entire basic mesh module and determines the module's external dimensions (square), but also serves as the direct connecting carrier for the flexible mesh body 2. The edges of the flexible mesh body 2 are directly and fixedly connected to the inner wall of module frame 1. Through its own structural strength, module frame 1 provides a stable installation foundation for the flexible mesh body 2, preventing edge loosening under stress. In addition, module frame 1 also provides an installation carrier for components such as the first connector 3, clamping plate 7, insert plate 9, and positioning plate 4, ensuring the overall structural stability of the module and preventing deformation due to external forces during transportation, installation, and use, thus laying the core structural foundation for the subsequent protective function.

[0037] The core protective function of the flexible mesh body 2: The flexible mesh body 2 is made of high-strength polyester or nylon woven strips in a crisscross pattern, with the intersections fixed by high-frequency welding or riveting, possessing excellent tensile strength and abrasion resistance. Its edges are directly connected to the inner wall of the module frame 1 without the need for additional transition structures. This direct connection method reduces stress loss and ensures that the impact force borne by the flexible mesh body 2 can be directly transmitted to the module frame 1. When impacted by ore or debris, the flexible mesh body 2 uses its own toughness to buffer the impact force, while the crisscrossing woven structure effectively catches falling objects, preventing them from continuing to fall and causing danger, thus achieving the core protective function; and because it is directly connected to the module frame 1, it can quickly disperse the impact force to the entire module frame 1, reducing damage caused by localized stress concentration.

[0038] The positioning and fixing function of the first connector 3: Multiple sets of evenly distributed first connectors 3 are connected to the inner wall of the module frame 1. Their core function is to achieve the fixed installation of the module frame 1 with the positioning points on the mine site. The design of multiple evenly distributed sets allows the module frame 1 to form a multi-point fixation with the positioning points (such as brackets, anchors, fixed columns, etc.) through the first connectors 3. This multi-point fixation structure can firmly fix the module frame 1 to the positioning points, preventing the module frame 1 from shifting or falling off when subjected to falling objects or vibrations in the mine environment. At the same time, the even distribution of the first connectors 3 also makes the module frame 1 bear the force evenly. When the module frame 1 transmits the impact force from the flexible mesh body 2, the first connectors 3 can distribute the impact force to each positioning point, reducing the stress burden on individual positioning points and further improving the installation stability of the module frame 1.

[0039] The second connector 10 serves a dual purpose: It is connected to the middle of the flexible mesh body 2 (with the same structure as the first connector 3) and has a fixing function. Firstly, it connects to the middle of the flexible mesh body 2 via ropes or supports, and can be connected to the module frame 1 or external auxiliary positioning points to further enhance the structural stability of the middle of the flexible mesh body 2, preventing local tearing or deformation due to concentrated stress. Secondly, it assists in positioning. When the protected area is high or has a large span, the second connector 10 can connect to the central positioning points at the mine site (such as top beams or intermediate support columns) to provide positioning support for the middle of the flexible mesh body 2. This prevents excessive sagging of the flexible mesh body 2 due to its own weight or impact, ensuring that the entire flexible mesh body 2 remains in a flat protective state. Combined with the support of the module frame 1, this forms a "edge-center" dual-stability structure, eliminating protective gaps.

[0040] II. Multi-module splicing and fixing principle

[0041] Mine safety nets are formed by splicing together multiple basic mesh modules to create protective surfaces of different sizes. During the splicing process, the marked structures cooperate with each other to achieve a stable connection.

[0042] Preliminary positioning of insert plate 9 and slot 6: The insert plate 9 on the right and lower outer walls of the module frame 1 is adapted to the size of the slot 6 opened on the left and upper sides of the adjacent basic mesh module. During splicing, the insert plate 9 of a set of modules is inserted into the slot 6 of the adjacent module. Through the interlocking relationship between the insert plate 9 and the slot 6, the adjacent modules are initially positioned, the relative positions between the modules are determined, and the modules are prevented from shifting in the horizontal direction. This provides a positioning reference for further fixing and also allows the module frames 1 of the adjacent modules to form a continuous support structure, providing a stable foundation for the splicing of the flexible mesh body 2.

[0043] The fastening function of the clamping plates 7 and the fixing screws 8: The two sets of clamping plates 7, distributed vertically at the opening inside the slot 6, limit the vertical movement of the insert plate 9 after it is inserted into the slot 6, preventing it from wobbling up and down within the slot 6. This ensures that the module frames 1 of adjacent modules are at the same horizontal level, reducing uneven stress caused by height differences at the splicing points. Subsequently, the fixing screws 8 are passed through the pre-set holes in the clamping plates 7 and the insert plate 9 and tightened. The tightening force generated by the fixing screws 8 firmly fixes the clamping plates 7 and the insert plate 9, thereby firmly connecting the module frames 1 of the two adjacent sets of basic mesh modules. This prevents the splicing points from separating due to impact, ensures the connection strength between the spliced ​​modules, and allows the multi-module module frames 1 to form an overall rigid frame.

[0044] The secondary reinforcement function of positioning plates 4 and fastening straps 5: After the adjacent modules are spliced ​​together, the multiple sets of positioning plates 4 at the bottom of the module frame 1 fit together. At this time, the fastening straps 5 (cable ties) are passed through the holes on the fitted positioning plates 4 and tightened to form a secondary reinforcement structure. This structure can further enhance the connection stability of adjacent modules in the vertical and horizontal directions, disperse the impact force at the splicing point, and avoid damage caused by excessive local stress due to the connection of only the insert plate 9 and slot 6, and the clamp plate 7 and fixing wire 8, ensuring the stability of the overall protective surface structure formed after the splicing of multiple modules. At the same time, the positioning plates 4 can cooperate with the positioning points at the bottom of the mine to assist the module frame 1 of the overall protective surface in connecting with the bottom positioning points. With the top / side positioning of the first connecting piece 3, a full-range positioning of "up and down-left and right" is formed, improving the overall installation stability of the safety net.

[0045] III. Working Principle of Overall Safety Net Protection

[0046] After multiple basic mesh modules are spliced ​​together in the above manner to form an overall mine safety net, the various structures work together to achieve the overall protection function:

[0047] When dangerous situations such as falling ore or rolling debris occur in the mining environment, the falling object first contacts the flexible mesh body 2. The flexible mesh body 2 utilizes its material properties and woven structure to buffer the impact of the falling object. Because it is directly connected to the modular frame 1, the impact force can be quickly transmitted to the assembled overall modular frame 1. The overall modular frame 1, with its own rigid support, disperses the impact force to each group of basic mesh modules, preventing individual modules from being overloaded. Furthermore, through multiple evenly distributed first connectors 3, the impact force is transmitted to various positioning points on the mining site. The first connectors 3, through their secure connection to the positioning points, prevent the overall modular frame 1 from shifting or falling off under the impact force, ensuring the overall stability of the safety net.

[0048] Meanwhile, the second connector 10 in the middle of the flexible mesh body 2 cooperates with the central positioning point to further disperse the impact force in the middle of the flexible mesh body 2, preventing tearing due to excessive force. The clamping plate 7, fixing wire 8, positioning plate 4, and fastening strap 5 at the splicing points of adjacent modules ensure that the overall module frame 1 will not separate due to impact force, maintaining the integrity of the overall frame. The various structures cooperate with each other to form a complete protective chain of "protection-force transmission-fixation", effectively blocking falling objects and preventing them from causing injury to workers or equipment below, thus achieving the purpose of mine safety protection.

[0049] In addition, when a local module is damaged, the damaged module can be disassembled separately (loosen the fixing screw 8 and fastening strap 5, pull out the insert plate 9, and disconnect the connection between the first connector 3 of the corresponding module and the positioning point) for replacement without affecting the rest of the overall safety net. After replacement, it can be quickly restored to the protective function by re-fixing it to the positioning point through the first connector 3, ensuring the continuity of protection.

[0050] Example 1

[0051] Temporary protective scenarios for small mine roadways

[0052] I. Scenario Requirements

[0053] A small mine has an auxiliary transport roadway with a risk of loose rocks falling in some areas. Temporary safety nets need to be installed for protection. The nets should be easy to install, flexible to dismantle, and should not affect the passage of small mining cars in the roadway.

[0054] II. Safety Net Parameter Selection

[0055] Basic wire mesh module specifications: Square basic wire mesh modules are selected, and the weight of a single module is controlled within a range that is easy for a single person to carry and install.

[0056] Core component parameters:

[0057] Module Frame 1: Made of aluminum alloy, ensuring lightweight while providing sufficient rigidity to provide stable support for the module.

[0058] Flexible mesh body 2: High-strength nylon woven tape is used, which is arranged in a crisscross pattern and fixed at the intersections by high-frequency welding. It takes into account both protective density and breathability, and meets the impact resistance requirements of temporary protection.

[0059] First connector 3: The inner wall of each module frame 1 is evenly distributed with aluminum alloy hook structure, which is adapted to the preset anchor bolt positioning points in the tunnel to realize the fixation of the module to the tunnel.

[0060] Splicing components: Insert plate 9 and slot 6 are size-matched to ensure that adjacent modules can be stably fitted together; clamp plate 7 and fixing screw 8 enhance the tightness of the splicing joint; positioning plate 4 and fastening strap 5 further strengthen the connection between modules.

[0061] Second connector 10: Located in the middle of the flexible mesh body 2 of each module, with the same structure as the first connector 3, used to connect the temporary support in the middle of the roadway to prevent the middle of the mesh from sagging.

[0062] III. Installation and Operation Process

[0063] Module splicing: Calculate the required number of modules based on the cross-sectional dimensions of the roadway, and splice them horizontally and vertically to form an overall protective net adapted to the roadway. First, insert the insert plate 9 of the adjacent module into the slot 6, and fasten it with the clamp plate 7 and fixing wire 8. Then, use the fastening strap 5 to bind the adjacent positioning plate 4 to ensure the stability of the net structure, while reserving passage space so as not to affect the operation of the mine car.

[0064] Positioning and fixing: The top and sides of the protective net are connected and fixed to the anchor points preset on the roadway wall by the first connector 3 on the module frame 1; at the same time, the second connector 10 in the middle of the flexible mesh body 2 is bound to the temporary support in the middle of the roadway to prevent the middle of the protective net from sagging due to its own weight or force.

[0065] Protective measures: When loose rocks fall from the top of the tunnel, they first impact the flexible mesh body 2. The nylon braided straps cushion the impact with their own toughness and simultaneously transfer the force to the module frame 1. The module frame 1 is securely connected to the anchor bolt positioning point via the first connector 3, preventing overall displacement. The second connector 10 prevents the flexible mesh body 2 from tearing due to excessive force, ultimately catching the loose rocks and ensuring safe passage below. After tunnel operations are completed, the fixing of the first connector 3 and the second connector 10 can be quickly removed, and the module can be disassembled for recycling and reuse.

[0066] Example 2

[0067] Protective measures around large open-pit mines

[0068] I. Scenario Requirements

[0069] A large open-pit iron mine has a risk of rockfall at its edge. A protective net needs to be built along the edge of the mine. The net must be able to withstand the impact of rockfall and adapt to the slight topographical undulations at the edge of the mine.

[0070] II. Safety Net Parameter Selection

[0071] Basic mesh module specifications: Square basic mesh modules are selected. The weight of a single module is suitable for handling with the assistance of small equipment, which can meet the needs of large-scale splicing.

[0072] Core component parameters:

[0073] Module 1: Made of corrosion-resistant aluminum alloy with an anti-corrosion coating, it is suitable for outdoor humid environments and ensures long-term stability.

[0074] Flexible mesh body 2: It adopts high-strength polyester woven strips, which are arranged in a crisscross pattern and fixed at the intersections by riveting to improve the impact resistance and cope with the impact of falling rocks on the slope.

[0075] First connector 3: Evenly distributed on the inner wall of each module frame 1, using an aluminum alloy U-shaped buckle structure, adapted to the pre-set steel column positioning points at the edge of the mining area, to realize the connection between the mesh and the fixed structure.

[0076] Splicing components: Insert plate 9 and slot 6 are size-matched to ensure structural continuity after module splicing; clamp plate 7 and fixing screw 8 enhance the impact resistance of the splicing joint; positioning plate 4 and fastening strap 5 improve the connection strength between modules and adapt to complex outdoor stress environment.

[0077] Second connector 10: Symmetrically arranged in the middle of the flexible mesh body 2 of each module, with the same structure as the first connector 3, used to connect the auxiliary pull rope at the edge of the mining area to enhance the stability of the mesh.

[0078] III. Installation and Operation Process

[0079] Basic preparation: Steel posts are set up along the edge of the mining area as positioning points to ensure that the posts are installed firmly; steel wire ropes are strung between the posts to assist in positioning and provide a basis for the protective net to adapt to the terrain.

[0080] Module splicing: Based on the length and height of the edge protection of the mining area, calculate the required number of modules and splice them horizontally and vertically to form a continuous protective net. First, insert the insert plate 9 of the adjacent module into the slot 6, and tighten the fixing wire 8 through the clamp 7 to the insert plate 9. Then, use stainless steel fastening straps 5 to bind the adjacent positioning plates 4. For areas with undulating terrain, fine-tune the module splicing angle. The flexibility of the flexible mesh body 2 adapts to slight slopes to ensure gapless protection.

[0081] Positioning and fixing: The first connector 3 of each module is fastened to the positioning point of the steel column and then fixed with bolts to ensure a firm connection; at the same time, the second connector 10 in the middle of the flexible mesh body 2 is bound to the auxiliary pull rope, and the two ends of the pull rope are fixed to the steel column to form a triangular stable structure of "column-pull rope-protective net", which improves the overall impact resistance.

[0082] Protective measures: When rocks fall on the slope of the mining area, they impact the flexible mesh body 2. The polyester woven straps, through their tight weave and riveted joints, disperse the impact force throughout the entire module frame 1. The module frame 1, securely connected to the steel pillars via the first connector 3, withstands the impact of the falling rocks, preventing the entire protective net from collapsing. The second connector 10 further disperses the lateral impact force through auxiliary ropes, preventing separation at the module joints. Ultimately, the falling rocks are blocked by the protective net at the edge of the mining area, protecting the road and equipment below.

[0083] Example 3

[0084] Layered protection scenario for underground mine shafts

[0085] I. Scenario Requirements

[0086] The main shaft of an underground gold mine requires safety nets to be installed in layers inside the shaft to prevent falling objects from injuring workers below. The safety nets must be able to be installed in the center and must not affect the operation of the hoisting equipment inside the shaft.

[0087] II. Safety Net Parameter Selection

[0088] Basic mesh module specifications: Square basic mesh modules are selected and a circular protective net is formed by "radial splicing". The weight of a single module is suitable for transportation by well hoisting equipment, which facilitates underground installation.

[0089] Core component parameters:

[0090] Module 1: Made of high-strength aluminum alloy, it has fatigue resistance and can adapt to the long-term stress environment inside the well, ensuring the stability of the mesh structure.

[0091] Flexible mesh body 2: It adopts high-strength nylon and polyester blended woven tape, which is arranged in a crisscross pattern. The intersections are fixed by high-frequency welding and riveting to improve wear resistance and tear resistance and cope with the impact of falling objects.

[0092] First connector 3: The outer wall of each module frame 1 is evenly distributed and adopts an aluminum alloy lifting ring structure to fit the pre-set steel cable positioning points inside the well shaft, so as to fix the mesh body to the inner wall of the well shaft.

[0093] Splicing components: Insert plate 9 and slot 6 are size-matched to ensure that the mesh is circular and gapless after radial splicing; clamp plate 7 and fixing wire 8 enhance the tightness of the splicing; positioning plate 4 with fastening strap 5 ensures reliable connection between modules and adapts to the vertical installation environment inside the well shaft.

[0094] Second connector 10: The flexible mesh body 2 of each module is set near the center end, and its structure is the same as that of the first connector 3. It is used to connect the steel rope suspension point in the center of the well shaft to achieve the centering and positioning of the mesh body.

[0095] III. Installation and Operation Process

[0096] Positioning point setting: Steel cable positioning points are set in layers on the inner wall of the well shaft; at the same time, a liftable steel rope suspension point is set in the center of the well shaft to fix the center of the protective net and ensure that the net is centered.

[0097] Module splicing and installation: Calculate the required number of modules based on the shaft diameter. On the temporary platform of the shaft hoisting cage, splice the modules radially using insert plates 9 and slots 6. Secure the clamping plates 7 and insert plates 9 with fixing wires 8, and then bind the positioning plates 4 with nylon fastening straps 5 to form a circular net. Subsequently, hoist the net to the installation layer using lifting equipment. Connect and fix the first connector 3 of each module to the steel cable positioning point on the inner wall of the shaft with shackles. At the same time, connect the second connector 10 of all modules to the steel rope lifting point at the center of the shaft to ensure that the protective net is centered and horizontal, and does not affect the operation of the hoisting equipment.

[0098] Protective measures: When a tool falls into the well shaft, it first impacts the flexible mesh body 2. The blended woven belt, through its double-fixed intersections, evenly transmits the impact force to the surrounding module frames 1. The module frames 1 are fixed by the first connector 3 to the steel cable positioning point and the second connector 10 to the central suspension point, preventing the protective net from shifting or deforming due to force. Simultaneously, the tightly woven structure of the flexible mesh body 2 effectively catches the tool, preventing it from penetrating the protective net. When it is necessary to remove the fallen object, the second connector 10 at the central suspension point can be loosened, one side of the protective net can be lowered, the fallen object can be quickly removed, and the net can be re-fixed without affecting normal well shaft operations.

[0099] The examples provided in this utility model are not intended to limit the implementation methods. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A mine safety net, characterized in that, It is composed of multiple basic mesh modules. The basic mesh module includes a module frame (1). A flexible mesh body (2) is connected inside the module frame (1). Multiple sets of evenly distributed first connectors (3) are connected to the inner wall of the module frame (1). Slots (6) are opened on the left and upper sides of the module frame (1). Two sets of clamps (7) are arranged vertically and connected to the inner wall of the module frame (1) at the inner opening of the slot (6). The outer walls of the right and lower sides of the module frame (1) are respectively connected with inserts (9) corresponding to the slots (6) opened on the corresponding sides. A set of basic mesh modules passes through the slots (6) opened by adjacent basic mesh modules through the connected inserts (9). The clamps (7) provided at the opening of the slot (6) are fixed to the inserts (9) passing through the slot (6) by fixing wires (8).

2. A mine safety net according to claim 1, characterized in that, The basic mesh module is square.

3. A mine safety net according to claim 1, characterized in that, The module frame (1), the first connector (3), the clamp (7), and the insert (9) are all lightweight alloy products.

4. A mine safety net according to claim 3, characterized in that, The module frame (1) is welded or integrally manufactured with the first connector (3), clamp (7), and insert (9).

5. A mine safety net according to claim 1, characterized in that, The bottom of the module frame (1) is connected to multiple sets of positioning plates (4), and the positioning plates (4) are connected to fastening straps (5). The positioning plates (4) of one set of basic mesh modules are attached to the positioning plates (4) of the adjacent basic mesh modules and fixed by fastening straps (5).

6. A mine safety net according to claim 5, characterized in that, The fastening band (5) is a cable tie.

7. A mine safety net according to claim 1, characterized in that, The flexible mesh body (2) is made of high-strength polyester or nylon braided tape, which is arranged in a crisscross pattern and fixed at the intersections by high-frequency welding or riveting.

8. A mine safety net according to claim 7, characterized in that, The flexible mesh body (2) is connected to a second connector (10) in the middle.

9. A mine safety net according to claim 8, characterized in that, The second connector (10) has the same structure as the first connector (3).

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