Connector, line and signal distribution method for signal line in mine blasting construction

Abstract

The application relates to the technical field of wire connector structures, in particular to a mine tunnel blasting construction signal line connector, a line and a signal distribution method thereof, a structure comprising a tail stress protection assembly, a middle sealing and buffering assembly and a head locking and connecting assembly; one end of the tail stress protection assembly is connected with the signal line in a matched mode and is used for stress protection of the joint of the signal line, and the other end is connected with the middle sealing and buffering assembly; the middle sealing and buffering assembly is arranged at the periphery of the head locking and connecting assembly and is used for sealing and protecting the head locking and connecting assembly; the head locking and connecting assembly comprises a male plug and a female plug, the male plug and the female plug are electrically connected with two mine tunnel blasting construction signal lines respectively and are used for realizing signal conduction and fixation between the two mine tunnel blasting construction signal lines. The application solves the technical problems that signal line protection is insufficient, connection fixation reliability is poor, signal distribution and mine tunnel construction scene adaptability are insufficient and signal transmission stability is affected.

Description

Technical Field

[0001] This application relates to the field of conductor connector structure technology, specifically to a connector, circuit, and signal distribution method for a mine blasting construction signal line. Background Technology

[0002] In mine blasting operations, signal lines are required to transmit signals between blasting control equipment and blasting devices, ensuring the precise and safe execution of blasting operations. However, existing mine blasting signal line connections and signal transmissions suffer from several compatibility defects: the signal line connections lack dedicated stress protection structures, and dragging the signal lines during mine construction can easily lead to stress concentration at the connections, affecting connection stability; the sealing structure design of the connection points is unreasonable and cannot effectively cope with the dusty and humid environment inside the mine, easily causing protection failure; at the same time, the reliability of the signal line connection fixing method is insufficient, and vibrations during mine construction can easily cause the connection points to loosen, thus affecting the stability of signal conduction. Furthermore, the deployment of multiple signal lines lacks a segmented connection structure adapted to the extended mining tunnel scenario, resulting in poor overall line adaptability and maintainability. Existing signal distribution methods do not consider the specific characteristics of mining tunnel construction, and the signal transmission paths are insufficiently adapted to the mining construction environment, making it difficult to guarantee the accuracy and consistency of signal distribution within segmented lines. These problems compromise the reliability and stability of signal transmission during mining tunnel blasting operations, affecting the safety and efficiency of blasting operations. Therefore, a signal line connection, line layout, and signal distribution solution adapted to the mining tunnel scenario is urgently needed.

[0003] In addition, existing connectors generally suffer from problems such as simple tensile structure, lack of anti-loosening measures for threaded connections, and stress concentration at the neck transition. Under conditions of frequent dragging in mine tunnels and strong vibrations from blasting, they are prone to tripping, sheath breakage, and loosening. Electrical contacts mostly use rigid plug-in methods, which lack stable elastic contact pressure, and the contact resistance fluctuates greatly with vibration and oxidation. At the same time, they lack a complete electromagnetic shielding structure and have unclear electrostatic discharge paths, making it difficult to resist complex stray current interference in mine tunnels. This does not meet the mandatory requirements of the "Blasting Safety Regulations" for the safety performance of blasting busbars. Summary of the Invention

[0004] This application mainly addresses the technical problems in current mine blasting construction, such as insufficient stress protection and sealing protection at signal line joints, poor reliability of connection fixation, lack of segmented structure adapted to mine extension when multiple signal lines are laid out, and insufficient adaptability of signal distribution to mine construction scenarios, which affects the stability of signal transmission.

[0005] According to the first aspect of the present application, an embodiment of the present application provides a connector structure for a signal line in mine roadway blasting construction, which is used for sealed conductive connection between two signal lines in mine roadway blasting construction. The connector structure of the signal line in mine roadway blasting construction includes a tail stress protection component, an intermediate sealing and buffering component, and a head locking and connecting component; One end of the tail stress protection component is connected to the signal line in a matching manner, which is used for stress protection of the connection of the signal line, and the other end is connected to the intermediate sealing and buffering component; The intermediate sealing and buffering component is arranged outside the head locking and connecting component, which is used for sealing protection of the head locking and connecting component; The head locking and connecting component includes a male plug and a female plug. The male plug and the female plug are respectively electrically connected to two signal lines in mine roadway blasting construction, which is used to realize signal conduction and fixation between two signal lines in mine roadway blasting construction.

[0006] According to the second aspect of the present application, an embodiment of the present application further provides a signal line of a signal line in mine roadway blasting construction, which includes multiple signal lines in mine roadway blasting construction arranged along the extension direction of the mine roadway, and at least one connector of the signal line in mine roadway blasting construction as described in any one of the above; The male plug of the connector is electrically connected to one signal line in mine roadway blasting construction, and the female plug of the connector is electrically connected to another signal line in mine roadway blasting construction. Through the connector, segmented docking of multiple signal lines in mine roadway blasting construction is realized, and a signal transmission line adapted to mine roadway excavation and blasting operations is formed; The line is a safety signal transmission system supporting mine roadway construction. The tail stress protection component of the connector is used to disperse the dragging stress in mine roadway construction, and the intermediate sealing and buffering component is used to isolate mine dust and humid environment.

[0007] According to the third aspect of the present application, an embodiment of the present application further provides a signal distribution method for a signal line in mine roadway blasting construction, which is characterized in that it is applied to the signal line of the signal line in mine roadway blasting construction as described above. The method includes the following steps: Connect the safety blasting signal output by the mine roadway blasting control equipment to the starting-end signal line in mine roadway blasting construction of the line; Along the mine roadway construction path, through the conductive cooperation of the male plug and the female plug of each connector in the line, the blasting signal is segmented and distributed to each segmented signal line in mine roadway blasting construction in the line; During the signal distribution process, reliable fixation of each segmented line is realized through the head locking and connecting component of the connector, and the intermediate sealing and buffering component and the tail stress protection component are adapted to the mine roadway construction environment; Once all the signal lines for blasting operations in each section of the mine tunnel have received the assigned blasting signal, they will simultaneously output signals to the corresponding blasting devices, thus completing the signal allocation and transmission for blasting operations in the mine tunnel or mine shaft.

[0008] According to the connector, wiring, and signal distribution method for mine blasting construction signal lines in the above embodiments, the coordinated operation of the tail stress protection component, intermediate sealing buffer component, and head locking connection component of the connector achieves a sealed conductive connection between the two signal lines, ensuring the reliability of signal conduction and connection fixation. The first conical sheath, with its gradually changing shape and interference fit with the outer sheath of the signal line, enhances stress dispersion and connection stability. The combination of the upper and lower rubber sleeves and cable ties, along with a neck structure with a diameter smaller than the first and second conical sheaths, effectively wraps and protects the head locking connection component and the neck. Simultaneously, the second conical sheath... The system features a smooth transition between the neck and head locking connection components. Through the threaded engagement of the fixed hexagonal prism, threaded column, and movable nut, combined with a fitted sealing washer, reliable locking and sealing of the male and female plugs at the connection point are achieved. The conductive pins within the female plug ensure stable signal conduction. The connector enables segmented connection of multiple signal lines, forming a route suitable for mine tunnel extension, excavation, and blasting operations, improving the adaptability and maintainability of the wiring layout. By employing segmented signal distribution steps along the mine tunnel construction path, combined with the adaptability of each connector component to the mine tunnel construction environment, the system ensures the accuracy and consistency of signal distribution, guaranteeing the smooth operation of mine blasting operations.

[0009] The application addresses the issues of insufficient tensile strength and easy breakage at signal line connections through a composite tail stress protection structure with a three-stage tapered gradient, one-piece molding, and annular anti-slip texture. It utilizes a sealing gasket compression elastic reaction force to achieve passive anti-loosening of the threaded connection, eliminating the need for additional anti-loosening parts. A buffer structure with upper and lower rubber sleeves fully enclosing the neck disperses concentrated stress across the entire sleeve surface. Gold-plated conductive pins and interference-fit elastic contacts ensure long-term electrical connection stability. Electromagnetic shielding is achieved through a stainless steel metal shell and continuous shielding layer connection, while reliable static electricity discharge is ensured through flame-retardant and anti-static materials across all components. A segmented, pluggable docking structure allows for independent maintenance of individual line segments, preventing single-point failures from affecting overall operations. This application only provides the physical connection channel for signal transmission and does not alter the safety protection logic of the existing blasting control system. Short-circuit protection, signal verification, resistance matching, electrical isolation, and synchronous detonation control are all implemented by blasting control equipment conforming to national standards. Attached Figure Description

[0010] Figure 1 A schematic diagram of the connector structure for a mine blasting construction signal line provided in an embodiment of this application; Figure 2 for Figure 1A magnified view of a section at point A in the middle; Figure 3 A schematic diagram of a half-section structure of a connector for a mine blasting construction signal line provided in an embodiment of this application; Figure 4 A partial cross-sectional schematic diagram of the connector for the mine blasting construction signal line provided in an embodiment of this application; Figure 5 A schematic cross-sectional view of the connector structure for the mine blasting construction signal line provided in an embodiment of this application; Figure 6 This is a schematic diagram of the circuit structure of the mine blasting construction signal line provided in an embodiment of this application; Figure 7 A flowchart illustrating the signal allocation method for mine blasting construction signal lines provided in this application embodiment.

[0011] In the diagram: 1. Upper rubber sleeve; 2. Lower rubber sleeve; 3. Cable tie; 4. First conical sheath; 5. Signal line; 6. Neck; 7. Second conical sheath; 8. Fixed hexagonal prism; 9. Threaded post; 10. Female plug; 11. Male plug; 12. Adjustable nut; 13. Sealing washer. Detailed Implementation

[0012] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by related, similar element designations.

[0013] In the following embodiments, many details are described in order to enable a better understanding of this application. However, those skilled in the art will readily recognize that some of these features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods.

[0014] In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid the core parts of this application being overwhelmed by excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and general technical knowledge in the field.

[0015] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0016] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0017] Please refer to Figures 1 to 5 To address the technical problems currently encountered in mine blasting construction, such as insufficient stress protection and sealing protection at the connection points of signal lines 5, poor reliability of connection fixation, lack of segmented structures adapted to mine extensions when deploying multiple signal lines 5, and insufficient adaptability of signal distribution to mine construction scenarios leading to unstable signal transmission, this application provides a connector structure for mine blasting construction signal lines 5. This connector structure is used for sealed conductive connection between two mine blasting construction signal lines 5. The connector structure includes a tail stress protection component and a middle sealing component. The equipment includes a sealing buffer assembly and a head locking connection assembly; one end of the tail stress protection assembly is connected to the signal line 5 to provide stress protection at the connection point of the signal line 5, and the other end is connected to the intermediate sealing buffer assembly; the intermediate sealing buffer assembly is located around the head locking connection assembly to provide sealing protection for the head locking connection assembly; the head locking connection assembly includes a male plug 11 and a female plug 10, which are electrically connected to the two mine blasting construction signal lines 5 respectively to realize signal conduction and fixation between the two mine blasting construction signal lines 5.

[0018] In some embodiments, the tail stress protection component includes a first conical sheath 4, which has a gradient shape. One end of the first conical sheath 4 is interference-fitted with the outer sheath of the signal line 5 with no gap at the connection, and the other end is fixedly connected to the intermediate sealing buffer component. In this embodiment, the first conical sheath is a three-stage tapered gradient structure. The inner diameter of the large end is interference-fitted with the outer sheath of the signal line with an interference amount of 0.2-0.5mm. The small end is integrally injection molded with the neck of the intermediate sealing buffer component, completely eliminating the hidden dangers of cracking and water ingress of traditional adhesive fixing methods. The surface of the first conical sheath is provided with 3-5 annular anti-slip textures with a depth of 0.3-0.5mm, which can significantly increase the friction with the outer sheath of the signal line. Combined with the stress dispersion effect of the conical surface, the overall pull-out resistance is increased to more than 500N, meeting the mechanical requirements of signal line dragging during mine construction.

[0019] In some embodiments, the intermediate sealing buffer assembly includes an upper rubber sleeve 1 and a lower rubber sleeve 2 that are mated together, a cable tie 3 for fixing the upper rubber sleeve 1 and the lower rubber sleeve 2, and a neck 6 and a second conical sheath 7; the neck 6 is located between the first conical sheath 4 and the second conical sheath 7, and its diameter is smaller than the diameter of the first conical sheath 4 and the second conical sheath 7; the end of the second conical sheath 7 away from the neck 6 is connected to the head locking connection assembly.

[0020] In some embodiments, after the upper rubber sleeve 1 and the lower rubber sleeve 2 are engaged, they completely cover the periphery of the head locking connection assembly and the outer surface area of ​​the neck 6, and the cable tie 3 is arranged circumferentially along the engagement point of the upper rubber sleeve 1 and the lower rubber sleeve 2.

[0021] In some embodiments, the head locking connection assembly further includes a fixed hexagonal prism 8 and a threaded post 9, the fixed hexagonal prism 8 and the threaded post 9 are integrally connected, the female plug 10 is disposed in the threaded post 9 and is connected to the inner wall of the threaded post 9; the end of the second conical sheath 7 away from the neck 6 is fixedly connected to the fixed hexagonal prism 8.

[0022] In some embodiments, the head locking connection assembly further includes a movable nut 12, the outer wall of the male plug 11 is provided with an external thread structure, the inner wall of the movable nut 12 is provided with an internal thread structure adapted to the thread structure, and the male plug 11 and the female plug 10 are connected by threads.

[0023] In some embodiments, a sealing gasket 13 is sandwiched between the mating end faces of the male plug 11 and the female plug 10. The sealing gasket 13 is annular and is disposed in contact with the mating end faces of the male plug 11 and the female plug 10.

[0024] In some embodiments, the female plug 10 is provided with a conductive pin for signal conduction. The conductive pin is fixedly connected to the female plug 10 and is electrically connected to the corresponding mine blasting construction signal line 5.

[0025] In some embodiments, the tail stress protection component includes a first conical sheath 4. The first conical sheath 4 is made of flame-retardant and anti-static rubber and has a three-stage tapered gradient structure. Its large end inner diameter is interference-fitted with the outer sheath of the signal line 5, and there is no gap at the connection. The small end is integrally formed with the neck 6 of the middle sealing buffer component. The surface of the first conical sheath 4 is provided with annular anti-slip texture. It is worth noting that the gradient structure of the first conical sheath 4 and the small diameter design of the neck 6 work together to not only disperse drag stress through the conical surface, but also guide the upper rubber sleeve 1 and the lower rubber sleeve 2 to naturally fit and wrap around, avoiding protection dead corners. This unexpectedly achieves the dual effect of stress dispersion and protection positioning, solving the problem of easy misalignment between traditional sheaths and seals.

[0026] In some embodiments, the intermediate sealing buffer assembly includes an upper rubber sleeve 1, a lower rubber sleeve 2, a cable tie 3, a neck 6, and a second conical sheath 7. The upper rubber sleeve 1 and the lower rubber sleeve 2 are both made of fluororubber and have a semi-circular structure. When aligned, they completely wrap around the periphery of the head locking connection assembly and a portion of the neck 6. The cable tie 3 is made of stainless steel and is arranged circumferentially along the alignment of the upper rubber sleeve 1 and the lower rubber sleeve 2. The neck 6 is located between the first conical sheath 4 and the second conical sheath 7, and its diameter is smaller than that of the first conical sheath 4 and the second conical sheath 7. The second conical sheath 7 is also made of flame-retardant and antistatic rubber, with one end fixedly connected to the neck 6 and the other end fixedly connected to the fixed hexagonal prism 8 of the head locking connection assembly. The upper rubber sleeve 1 and the lower rubber sleeve 2 are both made of fluororubber and have a semi-circular structure. When aligned, they completely wrap around the periphery of the head locking connection assembly and a portion of the neck 6. The cable tie 3 is made of stainless steel and has two circumferentially arranged along the alignment of the upper rubber sleeve 1 and the lower rubber sleeve 2. The neck 6 is located between the first conical sheath 4 and the second conical sheath 7, and its diameter is smaller than that of the first conical sheath 4 and the second conical sheath 7. The second conical sheath 7 is also made of flame-retardant and antistatic rubber, with one end fixedly connected to the neck 6 and the other end fixedly connected to the fixed hexagonal prism 8 of the head locking connection assembly. The mating surfaces of sleeve 2 are provided with mutually adaptable protrusions and grooves. The protrusions and grooves are respectively sealed and fixedly connected to the large ends of the upper rubber sleeve 1 and the lower rubber sleeve 2. The protrusions and grooves are engaged or fitted together, with the fit being a transition fit or a clearance fit. This not only achieves precise mating but also allows the mating surfaces to form an embedded seal when the cable tie 3 is tightened, unexpectedly improving the deformation resistance of the sealing structure. Even if the mating surfaces are subjected to compression or collision during mine construction, there will be no loosening of the mating surfaces, dust leakage, or water seepage. At the same time, the rigid connection between the second conical sheath 7 and the fixed hexagonal prism 8, combined with the flexible protection of the first conical sheath 4, forms a rigid-flexible transition structure, effectively absorbing the transmission of mine vibration to the head connection part and preventing loosening of the threads due to vibration. In this embodiment, the mating surfaces of the upper and lower rubber sleeves are provided with mutually adaptable trapezoidal protrusions and trapezoidal grooves. The protrusion height is 1-1.5mm. When mated, the protrusions embed into the grooves to form an embedded sealing structure, which can effectively prevent misalignment of the mating surfaces after the cable tie is tightened, improving the reliability of the seal. The neck is completely enclosed by an upper and lower rubber sleeve. The interference fit between the sleeve and the outer wall of the neck is 0.1-0.3mm. The elastic deformation of the sleeve can absorb the impact and bending stress acting on the neck, preventing the neck from breaking due to stress concentration. The neck is made of the same flame-retardant and antistatic rubber material as the first conical sheath, with an elongation at break ≥500%, and can withstand more than 1000 repeated 180° bends without damage.

[0027] In some embodiments, the mating surfaces of the upper and lower rubber sleeves can also be provided with mutually compatible bolt and nut structures. The hexagonal prisms of the bolts and nuts are completely enclosed inside the rubber sleeves, and the upper and lower rubber sleeves are fixed by threaded connection, which is suitable for extreme working conditions that require higher sealing strength.

[0028] In some embodiments, the mating surfaces of the upper rubber sleeve 1 and the lower rubber sleeve 2 are provided with mutually compatible bolts and nuts. The outer periphery of the bolts and nuts is sealed and fixedly connected to the large ends of the upper rubber sleeve 1 and the lower rubber sleeve 2, respectively. The large ends of the upper rubber sleeve 1 and the lower rubber sleeve 2 are respectively connected to the outer periphery of the bolts and nuts through cable ties. A hexagonal prism is provided on the opposite side of the bolts and nuts, and the hexagonal prisms of the bolts and nuts are all wrapped inside the upper rubber sleeve 1 and the lower rubber sleeve 2.

[0029] In some embodiments, the bolt and nut are connected by a thread, with one thread turn.

[0030] In some embodiments, the bolt and nut are connected by a thread with two turns of thread.

[0031] In some embodiments, the bolt and nut are connected by a thread, with the number of threads ranging from one to two turns.

[0032] In the above embodiment, when installing the bolt and nut, since both the upper rubber sleeve 1 and the lower rubber sleeve 2 are made of soft rubber, the operator first presses the upper rubber sleeve 1 and the lower rubber sleeve 2 with their hands and holds the hexagonal prism of the bolt and nut. Then, the bolt and nut are rotated half a turn to one turn in opposite directions respectively. Then, the bolt and nut are joined together and pressed, and the bolt and nut are rotated in the forward direction respectively to tighten them. Here, forward and reverse refer to the same direction and opposite direction of the threads.

[0033] In some embodiments, the bolt and nut are each rotated in the opposite direction by half a turn to one turn, or more turns; when the number of thread turns is two, the bolt and nut may each rotate in the opposite direction by one and a half turns.

[0034] In some embodiments, the head locking connection assembly includes a fixed hexagonal prism 8, a threaded column 9, a female plug 10, a male plug 11, a movable nut 12, and a sealing washer 13. The fixed hexagonal prism 8 and the threaded column 9 are integrally formed and are made of stainless steel 304. The side length of the fixed hexagonal prism 8 is 18mm. The inner wall of the threaded column 9 is interference-fitted with the female plug 10. The female plug 10 has a conductive pin, which is fixedly connected to the female plug 10 and electrically connected to the corresponding mine blasting construction signal line 5. The outer wall of the male plug 11 has an external thread structure, and the inner wall of the movable nut 12 has an internal thread structure adapted to the external thread structure. The sealing washer 13 is made of fluororubber. The sealing gasket 12 is sandwiched between the mating surfaces of the male plug 11 and the female plug 10, fitting snugly against their mating surfaces. The movable nut 12 engages with the threaded connection of the male plug 11, simultaneously compressing the sealing gasket 13 during the locking process. This causes the sealing gasket 13 to deform uniformly and fill the tiny gaps in the mating surfaces, unexpectedly achieving simultaneous mechanical locking and elastic sealing without requiring additional sealing operations. The design of the fixed hexagonal prism 8 not only facilitates operation while wearing gloves, but its integrated structure with the threaded column 9 also provides rigid support for the female plug 10, preventing displacement due to dragging or vibration in the mine tunnel. This ensures precise mating between the conductive pin and the male plug 11, reducing signal transmission loss. In this embodiment, the sealing gasket is made of fluororubber with a Shore hardness of 60±5 degrees and an initial thickness of 2mm. When the adjustable nut is tightened to the specified torque, the sealing washer is compressed by 15%-20%, generating a continuous elastic reaction force. This force acts perpendicularly on the mating faces of the male and female plugs and is transmitted through the faces to the threaded pair, creating sufficient positive pressure and friction between the threaded surfaces, thus achieving a reliable anti-loosening effect. After vibration testing according to mining product standards (frequency 50Hz, acceleration 10g, continuous vibration for 2 hours), the threaded connection remained secure, and the sealing performance remained excellent.

[0035] Furthermore, the conductive pin is gold-plated and fixed to the female plug 10 via embedded injection molding. This structure not only enhances the conductive pin's corrosion resistance and adapts to the humid environment of the mine, but also avoids the unstable contact resistance problem caused by traditional welding, further improving the stability of signal transmission. Simultaneously, the integrated molding structure of the first conical sheath 4 and the neck 6, compared to traditional adhesive fixing methods, completely eliminates the risk of cracking and water ingress at the adhesive joint, ensuring that the service life of the tail protection is essentially the same as that of the signal line 5 itself, reducing the frequency of later maintenance. In addition, the inner walls of the upper rubber sleeve 1 and the lower rubber sleeve 2 are provided with slightly raised anti-slip textures. These textures form multi-point contact with the outer wall of the head locking connection component and the outer wall of the neck 6. After the cable tie 3 is tightened, it further enhances the tightness of the seal between the sealing element and the wrapped component, effectively preventing the seal from shifting due to frequent movement and collisions during mine construction, ensuring long-term stable sealing performance. In this embodiment, the conductive pin and the male plug's socket are interference-fitted, with an interference amount of 0.05-0.1mm. When the male plug is inserted into the female plug, the conductive pin undergoes a slight elastic deformation, forming a stable contact pressure of not less than 5N, ensuring continuous electrical contact. The gold plating thickness of the conductive pin surface is ≥2μm, effectively resisting the erosion of mine moisture and corrosive gases such as hydrogen sulfide, keeping the contact resistance stable below 3mΩ for a long time, and avoiding signal attenuation or overheating due to increased contact resistance. The conductive pin is embedded and fixed inside the female plug using injection molding, with an injection molding bonding force ≥100N, preventing the pin from shifting or falling off during insertion and removal.

[0036] In this embodiment, during connector assembly, the large end of the first conical sheath 4 is first fitted onto the outer sheath of the signal line 5 and fixed by interference fit; then, the upper rubber sleeve 1 and the lower rubber sleeve 2 are aligned and wrapped around the neck 6 and the head locking connection assembly through the positioning structure, and fixed by circumferential binding with cable ties 3. At this time, the positioning structure and cable ties 3 work together to form a stable seal; then, the female plug 10 is pressed into the inner wall of the threaded post 9, and the male plug 11 is connected to another signal line 5; finally, the sealing gasket 13 is fitted onto the end face of the male plug 11, aligned with the female plug 10 and inserted, and the movable nut 12 is tightened. While locking, the sealing gasket 13 is compacted and sealed. The entire assembly process does not require complicated tools, and the protective, sealing and fixing structure formed by the cooperation of each component reinforces each other, significantly improving reliability.

[0037] In the above embodiments, the fixed hexagonal prism, wire column, and movable nut of the head locking connection assembly are integrally processed from stainless steel 304 material to form a complete metal shielding shell, which can effectively block external electromagnetic interference. After the connector is assembled, the metal shielding shell is reliably connected to the shielding layer of the mining shielding signal wire through crimping to form a continuous electromagnetic shielding channel along the entire line. Through electromagnetic compatibility testing, under the interference of an electric field intensity of 10 V / m, the signal transmission error rate of the connector of the present application is 0, which can effectively resist the stray current interference generated by equipment such as motors and transformers in the mine roadway and prevent the accidental triggering of the blasting device.

[0038] In the above embodiments, all rubber components of the present application, including the first conical sheath, the second conical sheath, the upper rubber sleeve, the lower rubber sleeve, and the sealing washer, are made of flame-retardant and antistatic materials conforming to the MT113-1995 standard, with a surface resistance ≤ 1×10^9 Ω, which can timely discharge the static electricity generated on the surface of the connector to the ground and avoid the accumulation of static electricity causing sparks. All metal components are passivated to prevent rusting. The insulation resistance of the connector of the present application ≥ 100 MΩ, and the withstand voltage strength ≥ 2 kV, fully meeting the safety requirements of mining electrical products.

[0039] Please refer to Figure 6 , the embodiment of the present application further provides a line of the mine roadway blasting construction signal wire 5, including multiple mine roadway blasting construction signal wires 5 arranged along the extension direction of the mine roadway, and at least one connector of the mine roadway blasting construction signal wire 5 as described in any one of the above; the male plug 11 of the connector is electrically connected to one of the mine roadway blasting construction signal wires 5, and the female plug 10 of the connector is electrically connected to another mine roadway blasting construction signal wire 5. Through the connector, segmented docking of multiple mine roadway blasting construction signal wires 5 is achieved to form a signal transmission line adapted to mine roadway excavation and blasting operations; the line is a safety signal transmission system supporting mine roadway construction. The tail stress protection component of the connector is used to disperse the dragging stress during mine roadway construction, and the middle sealing and buffering component is used to isolate the mine dust and humid environment. In this embodiment, the line adopts a segmented pluggable docking structure, and the length of each segment of the signal wire is 50 m or 100 m, which can be flexibly spliced according to the progress of mine roadway excavation. When a certain segment of the signal wire or the connector fails, only the movable nut and the tie strap of the corresponding connector need to be loosened, and the faulty segment can be replaced separately without disassembling the entire line. The fault troubleshooting and replacement time do not exceed 10 minutes, greatly improving the maintainability and construction efficiency of the line. Each segmented line is independent of each other, and a single segment failure will not cause the signal of the entire line to be interrupted, avoiding the problem of the entire line being paralyzed due to a single fault in the traditional whole-line laying method.

[0040] In some embodiments, such as Figure 6The circuit of the mine tunnel blasting construction signal line 5 shown includes 5 mine tunnel blasting construction signal lines 5 arranged along the extension direction of the mine tunnel, and 4 connectors of the mine tunnel blasting construction signal line 5 as in Embodiment 1. The male plug 11 of each connector is electrically connected to one of the mine tunnel blasting construction signal lines 5 by welding, and the female plug 10 is also electrically connected to another mine tunnel blasting construction signal line 5 by welding. The 5 mine tunnel blasting construction signal lines 5 are segmented and docked through 4 connectors to form a signal transmission line adapted to mine tunnel excavation and blasting operations; the line is a safety signal transmission system for mine tunnel construction. The tail stress protection component of the connector is used to disperse the dragging stress during mine tunnel construction, and the middle sealing and buffering component is used to isolate the mine dust and humid environment; the segmented cooperation of multiple signal lines 5 and the connector not only facilitates the line expansion during the extension of the mine tunnel, but also unexpectedly achieves the effect that local maintenance does not affect the whole. When a certain section of the signal line 5 or the connector fails, only the corresponding segmented connector needs to be disassembled for replacement, without disassembling the whole line, greatly improving the maintenance efficiency during mine tunnel construction; at the same time, the tail stress protection components of each connector are evenly distributed along the extension direction of the mine tunnel, forming multi-point stress dispersion, avoiding the risk of overall fracture of the traditional long-distance signal line 5 caused by single-point dragging; in addition, the overall wrapping design of the middle sealing and buffering component makes the connection part of the line form a fully enclosed protection section. After multiple protection sections are connected in series, the protection ability of the whole line shows a superimposed effect, ensuring that the internal signal transmission is not affected even in an environment with extremely high humidity and large dust concentration in the mine tunnel.

[0041] Please refer to Figure 7 , the embodiment of the present application also provides a signal distribution method for the mine tunnel blasting construction signal line 5, which is characterized in that it is applied to the circuit of the mine tunnel blasting construction signal line 5 as described above, and the method includes the following steps: Step S701: Connect the safety blasting signal output by the mine tunnel blasting control device to the starting-end mine tunnel blasting construction signal line 5 of the circuit.

[0042] Step S702: Along the mine tunnel construction path, through the conductive cooperation of the male plug 11 and the female plug 10 of each connector in the line, the blasting signal is segmented and distributed to each segmented mine tunnel blasting construction signal line 5 in the line.

[0043] Step S703: During signal distribution, the head locking connection assembly of the connector reliably fixes each segment of the line, and the intermediate sealing buffer assembly and the tail stress protection assembly adapt to the mine construction environment. In some embodiments, during signal distribution, the movable nut 12 of the head locking connection assembly and the threaded engagement of the male plug 11 reliably fix each segment of the line. The upper rubber sleeve 1, lower rubber sleeve 2 and sealing washer 13 of the intermediate sealing buffer assembly, and the first conical sheath 4 of the tail stress protection assembly adapt to the mine construction environment. The precise docking of the conductive pins of each connector with the male plug 11, combined with the stable fixation of the head locking assembly, ensures the synchronization of signal transmission of each segment of the line, avoids signal delay caused by loose connection, and ensures that all blasting devices can receive the synchronization signal. At the same time, the adaptation of the intermediate sealing buffer assembly and the tail stress protection assembly to the mine environment not only protects the connection parts, but also reduces the impact of environmental interference on the signal, significantly improving the accuracy of signal distribution.

[0044] Step S704: After each section of the mine tunnel blasting construction signal line 5 has received the allocated blasting signal, it synchronously outputs a signal to the corresponding blasting device to complete the signal allocation and transmission for the mine tunnel or mine shaft blasting operation.

[0045] Furthermore, before signal distribution, each connector in the line can be pre-locked for testing. Test signals are output from the blasting control equipment to check if the signal transmission delay of each segment is within a preset range. If the delay of a segment exceeds the standard, calibration can be performed by retightening the movable nut 12 or adjusting the mating depth of the male plug 11 and female plug 10 to ensure the synchronization of the overall signal distribution. Simultaneously, when adding a blasting device during mine tunnel excavation, the line can be extended using new connectors and segment signal lines 5. Signal distribution for the new segment does not require interrupting the signal transmission of the original line; simply connect the male plug 11 of the new connector to the end signal line 5 of the original line, and the female plug 10 to the new signal line 5 to achieve signal distribution access for the new blasting device, significantly improving construction efficiency. In addition, during signal distribution, due to the sealing protection and stress dispersion effect of each connector, even if local water accumulation or dust buildup occurs in the mine tunnel, it will not affect the normal signal distribution, ensuring that blasting operations can proceed smoothly as planned and effectively avoiding blasting delays or accidental triggering caused by environmental factors. In this method, the structural fit of each connector and the signal distribution steps work synergistically, ensuring that the signal distribution process simultaneously possesses reliability, synchronization, and anti-interference capabilities. This solves the signal distortion and delay problems caused by insufficient line protection and loose connections in traditional signal distribution. Furthermore, the segmented distribution method adapts to the mine tunnel construction path, ensuring the signal transmission path conforms to the mine tunnel direction, reducing bending and dragging of the signal line 5, and further extending the line's service life. In this embodiment, the signal distribution method of this application only involves the physical transmission process of the blasting signal and does not involve the electrical logic design of the blasting control system. Safety functions such as short-circuit protection, overcurrent protection, signal verification, resistance matching, electrical isolation, and nanosecond-level synchronous detonation control are all implemented internally by the mine blasting control equipment conforming to the GB3836.1-2010 standard. The connectors of this application provide a low-loss, highly stable, and highly reliable physical connection channel, ensuring that the safety signals output by the blasting control equipment can be accurately and synchronously transmitted to each blasting device, fully complying with all provisions regarding blasting busbars and signal transmission in the "Blasting Safety Regulations" GB6722-2014.

[0046] In this embodiment, the structural cooperation of each connector and the signal distribution steps work together to ensure that the signal distribution process is reliable, synchronous, and anti-interference. This solves the problems of signal distortion and delay caused by insufficient line protection and loose connections in traditional signal distribution. Furthermore, the segmented distribution method is adapted to the mine tunnel construction path, so that the signal transmission path follows the mine tunnel direction, reducing the bending and dragging of the signal line 5 and further extending the service life of the line.

[0047] Those skilled in the art will understand that all or part of the functions of the various methods in the above embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, which may include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to achieve the above functions. For example, the program can be stored in the memory of a device, and when the program in the memory is executed by the processor, all or part of the above functions can be achieved. In addition, when all or part of the functions in the above embodiments are implemented by computer programs, the program can also be stored in a server, another computer, disk, optical disk, flash drive, or external hard drive, etc., and can be downloaded or copied to the memory of a local device, or the system of the local device can be updated. When the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be achieved.

[0048] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A connector structure for a mine blasting construction signal line, used for a sealed conductive connection between two mine blasting construction signal lines, characterized in that, The connector structure of the mine blasting construction signal line includes a tail stress protection component, an intermediate sealing buffer component, and a head locking connection component. One end of the tail stress protection component is connected to the signal line to provide stress protection at the junction of the signal line, and the other end is connected to the intermediate sealing buffer component. The intermediate sealing buffer assembly is disposed around the head locking connection assembly and is used to seal and protect the head locking connection assembly. The head locking connection assembly includes a male plug and a female plug, which are electrically connected to two mine tunnel blasting construction signal lines respectively, to realize signal conduction and fixation between the two mine tunnel blasting construction signal lines.

2. The connector structure for the mine blasting construction signal line as described in claim 1, characterized in that, The tail stress protection component includes a first conical sheath, which has a gradient shape. One end of the sheath is interference-fitted with the outer sheath of the signal line with no gap at the connection, and the other end is fixedly connected to the intermediate sealing buffer component. The first conical sheath is made of flame-retardant and anti-static rubber material, and the surface is provided with annular anti-slip texture to improve pull-out resistance and stress dispersion effect.

3. The connector structure for the mine blasting construction signal line as described in claim 1, characterized in that, The intermediate sealing and buffer assembly includes an upper rubber sleeve and a lower rubber sleeve that are mated together, a cable tie for fixing the upper rubber sleeve and the lower rubber sleeve, and a neck and a second conical sheath; the neck is located between the first conical sheath and the second conical sheath, and its diameter is smaller than the diameter of the first conical sheath and the second conical sheath; the end of the second conical sheath away from the neck is connected to the head locking connection assembly; the upper rubber sleeve and the lower rubber sleeve are made of flame-retardant and antistatic fluororubber, and the mating surfaces are provided with mutually adaptable concave and convex positioning structures.

4. The connector structure for the mine blasting construction signal line as described in claim 3, characterized in that, After the upper and lower rubber sleeves are aligned, they completely cover the periphery of the head locking connection assembly and the outer surface area of ​​the neck. The cable ties are arranged circumferentially along the alignment of the upper and lower rubber sleeves to form a fully enclosed and sealed structure.

5. The connector structure for the mine blasting construction signal line as described in claim 3, characterized in that, The head locking connection assembly also includes a fixed hexagonal prism and a threaded post. The fixed hexagonal prism is integrally connected to the threaded post, and the female plug is disposed inside the threaded post and is connected to the inner wall of the threaded post. The end of the second conical sheath away from the neck is fixedly connected to the fixed hexagonal prism.

6. The connector structure for the mine blasting construction signal line as described in claim 5, characterized in that, The head locking connection assembly also includes a movable nut. The outer wall of the male plug is provided with an external thread structure, and the inner wall of the movable nut is provided with an internal thread structure that is adapted to the thread structure. The male plug and the female plug are connected by threads.

7. The connector structure for the mine blasting construction signal line as described in claim 6, characterized in that, A sealing gasket is sandwiched between the mating surfaces of the male plug and the female plug. The sealing gasket is annular and fits against the mating surfaces of the male plug and the female plug. When the sealing gasket is compressed, it generates a continuous elastic reaction force to prevent the threaded connection from loosening.

8. The connector structure for the mine blasting construction signal line as described in claim 5, characterized in that, The female plug is equipped with a conductive pin for signal conduction. The conductive pin is fixedly connected to the female plug and electrically connected to the corresponding mine blasting construction signal line. The conductive pin and the male plug's socket are interference-fitted to form a stable elastic contact pressure. The conductive pin is gold-plated to ensure stable contact resistance and improve corrosion resistance.

9. A signal line for mine blasting operations, characterized in that, It includes multiple mine tunnel blasting construction signal lines arranged along the extension direction of the mine tunnel, and at least one connector for the mine tunnel blasting construction signal line as described in any one of claims 1-8; The male plug of the connector is electrically connected to one of the mine tunnel blasting construction signal lines, and the female plug of the connector is electrically connected to another mine tunnel blasting construction signal line. Through the connector, segmented docking of multiple mine tunnel blasting construction signal lines is achieved, forming a signal transmission line adapted to mine tunnel excavation and blasting operations; The line is a safety signal transmission system supporting mine tunnel construction. The tail stress protection component of the connector is used to disperse the dragging stress during mine tunnel construction, and the intermediate sealing and buffering component is used to isolate mine dust and humid environment; The line is a segmented and maintainable structure, enabling independent replacement and maintenance of single-segment lines.

10. A signal distribution method for mine tunnel blasting construction signal lines, characterized in that, Applied to the line of the mine tunnel blasting construction signal line as described in claim 9, the method includes the following steps: Connect the safety blasting signal output by the mine tunnel blasting control device to the starting-end mine tunnel blasting construction signal line of the line; Along the mine tunnel construction path, through the conductive cooperation of the male plug and the female plug of each connector in the line, the blasting signal is segmented and distributed to each segmented mine tunnel blasting construction signal line in the line; During the signal distribution process, reliable fixation of each segmented line is achieved through the head locking connection component of the connector, and the intermediate sealing and buffering component and the tail stress protection component are adapted to the mine tunnel construction environment; After each segmented mine tunnel blasting construction signal line receives the distributed blasting signal, signals are synchronously output to the corresponding blasting devices to complete the signal distribution and transmission of mine tunnel or mine shaft blasting operations.

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