Winding device for detonating cord

Abstract

The invention relates to the technical field of blasting devices, in particular to a detonating cord winding device which comprises a rack, a wheel train assembly installed on the rack and a winding drum assembly used for bearing a detonating cord. The wheel train assembly comprises a first rotating wheel, a buffer rotating wheel and an actuating wheel which are sequentially arranged along a detonating cord conveying path; the actuating wheel is coaxially connected with an actuator, the actuator is connected with the first rotating wheel and the buffering rotating wheel, and the actuator is used for converting rotating power of the actuating wheel into driving force for conveying media into the first rotating wheel and the buffering rotating wheel. The buffering rotating wheel is installed on a first sliding seat, the first sliding seat is installed on the rack in a sliding mode, and the first sliding seat has the trend of driving the buffering rotating wheel to be away from the first rotating wheel; the technical problems that safety risks exist due to friction between the detonating cord and the rotating wheel, and waste and control difficulty are caused by asynchronous operation of external cooling and the detonating cord are solved.

Description

Technical Field

[0001] This invention relates to the field of blasting device technology, and more specifically to a detonating cord winding device. Background Technology

[0002] In the field of blasting engineering, detonating cord, as a key cord-like pyrotechnic material that transmits detonation waves and detonates explosives, is crucial for its safe, stable, and efficient delivery and laying. In actual operations, detonating cord is typically released from a large drum and needs to be transported and wound through a series of guide or tensioning rollers. Traditional winding devices often employ multiple alternating roller systems. During the high-speed movement of the detonating cord and its continuous contact and friction with the surfaces of these rollers, frictional heat can cause localized temperature build-up to a dangerous critical point, posing a risk of ignition or accidental detonation. Currently, a common solution to the friction problem is to use an external, independent cooling or antistatic agent spraying system. These systems usually require an additional power source (such as an electric motor) and a complex control unit, which not only increases equipment costs and energy consumption but also often results in the spraying action being out of sync with the actual operating speed of the detonating cord, potentially leading to agent waste or uneven coverage. More importantly, if these external systems are not shut down in time once the detonating cord stops operating, unnecessary agent consumption or even accumulation can occur, negatively impacting the equipment and the environment. On the other hand, when traditional winding devices encounter sudden obstruction of the detonation path or jamming of large drums, the tension on the detonating cord will increase sharply in an instant. Most of them lack efficient and fast mechanical overload protection mechanisms and usually rely on electronic sensors combined with clutches. The response is delayed and the structure is complex, which can easily cause the detonating cord to be stretched or even broken due to excessive tension, affecting the subsequent connection between the detonating cord and the explosive cartridge.

[0003] Therefore, the inventors have proposed a detonating cord winding device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a detonating cord winding device to solve the technical problems of safety risks caused by friction between the detonating cord and the rotating wheel, as well as waste and management difficulties caused by the asynchronous operation of external cooling and detonating cord.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A detonating cord winding device includes a frame, a wheel assembly mounted on the frame, and a drum assembly for carrying the detonating cord; The wheel system assembly includes a first wheel, a buffer wheel, and an actuating wheel arranged sequentially along the detonating cord delivery path; the actuating wheel is coaxially connected to an actuator, which is connected to the first wheel and the buffer wheel respectively, and the actuator is used to convert the rotational power of the actuating wheel into a driving force for delivering the medium into the first wheel and the buffer wheel; The buffer wheel is mounted on the first sliding seat, which is slidably mounted on the frame, and the first sliding seat has a tendency to drive the buffer wheel away from the first wheel; The drum assembly is connected to the first sliding seat, which can drive the drum assembly to retract radially. During the conveying of the detonating cord, the rotation of the actuating wheel synchronously drives the first rotating wheel to cool the contacting detonating cord.

[0006] Furthermore, both the first rotating wheel and the buffer rotating wheel are friction wheels. The friction wheel includes two limiting rings, a contact shaft, and a mounting shaft. The contact shaft is disposed between the two limiting rings and both ends of the contact shaft are connected to the two limiting rings. One end of the mounting shaft passes through one of the limiting rings and is coaxially rotatably connected to the contact shaft. The mounting shaft is mounted on the frame. The mounting shaft has an inlet channel, the contact shaft has a branch channel, and the outer periphery of the contact shaft has a plurality of outlet holes. Each outlet hole is connected to the branch channel, and the inlet channel is connected to the branch channel.

[0007] Furthermore, a rotating shaft is coaxially connected to the actuating wheel, and the rotating shaft is rotatably mounted on the frame; The actuator includes an actuation housing, a first piston cylinder, a second piston cylinder, and an actuation unit. The actuation unit is rotatably disposed inside the actuation housing. The two piston cylinders are fixedly disposed on the actuation housing. The first piston cylinder is connected to a first inlet pipe and a first outlet pipe. The first inlet pipe is provided with a first check valve, and the first outlet pipe is provided with a second check valve. The second piston cylinder is connected to a second inlet pipe and a second outlet pipe. The second inlet pipe is equipped with a third check valve, and the second outlet pipe is equipped with a fourth check valve. The first liquid outlet pipe is connected to the liquid inlet channel of the first rotor, and the second liquid outlet pipe is connected to the liquid inlet channel of the buffer rotor; the first liquid inlet pipe is connected to coolant, and the second liquid inlet pipe is connected to antistatic agent.

[0008] Furthermore, the actuation unit includes a first drive block, a second drive block, a first piston rod, and a second piston rod. The first drive block and the second drive block are misaligned. The first piston rod is slidably and sealed within the first piston cylinder. A first connecting rod is hinged to the first piston rod and is hinged to the first drive block. The second piston rod is slidably and sealed within the second piston cylinder. A second connecting rod is hinged to the second piston rod and is hinged to the second drive block. One end of the rotating shaft passes through the actuation housing and is connected to the first drive block.

[0009] Furthermore, it also includes a second rotating wheel and a third rotating wheel. A second sliding seat is installed at the bottom of the second rotating wheel. A telescopic elastic element is provided between the second sliding seat and the frame. The third rotating wheel is rotatably mounted on the frame. The second rotating wheel is located between the actuating wheel and the third rotating wheel. The telescopic elastic element has a tendency to drive the second rotating wheel away from the third rotating wheel.

[0010] Furthermore, the telescopic elastic element includes a telescopic cylinder, a telescopic column, and a slip ring. The slip ring is slidably connected to the telescopic cylinder in a sealed manner. The telescopic column is fixedly connected to the slip ring, and one end of the telescopic column extends out of the telescopic cylinder and is fixedly connected to the second sliding seat. The telescopic cylinder is fixedly installed on the frame. A spring is provided inside the telescopic cylinder, and the spring has a tendency to drive the telescopic column to extend outward.

[0011] Furthermore, the third rotating wheel is a friction wheel, and the telescopic cylinder is connected to a first air inlet pipe and a first air outlet pipe. A fifth one-way valve is provided at the first air inlet pipe, and a sixth one-way valve is provided at the first air outlet pipe. The first air outlet pipe is connected to the third rotating wheel.

[0012] Furthermore, the first sliding seat includes a sliding plate, a sliding rod, and a tension spring. The buffer wheel rotates and is mounted on the sliding plate. The sliding rod is slidably mounted on the frame, with one end of the sliding rod connected to the sliding plate and the other end of the sliding rod connected to a rotating ring. One end of the tension spring is connected to the frame, and the other end of the tension spring is connected to the sliding plate.

[0013] Furthermore, the reel assembly includes a mounting frame and a storage assembly, the storage assembly being rotatably mounted on the mounting frame; The storage assembly includes a first shaft rotatably connected to the mounting bracket and a second shaft coaxially disposed with the first shaft. The second shaft is configured to be axially displaced relative to the first shaft along the axial direction of the first shaft. The second shaft is rotatably connected to the rotating ring. A plurality of radially deformable extension units are provided between the first shaft and the second shaft, one end of the extension unit being connected to the first shaft and the other end of the extension unit being connected to the second shaft; In response to the approaching relative axial displacement between the first axis and the second axis, the expansion unit is forced to undergo radial expansion deformation, resulting in an increase in the outer diameter of the expansion unit; In response to the relative axial displacement between the first axis and the second axis, the expansion unit is forced to undergo radial contraction deformation, resulting in a reduction in the outer diameter of the expansion unit.

[0014] Furthermore, the extension unit includes a take-up block, a first hinge rod and a second hinge rod arranged intersecting each other, a first mounting block and a second mounting block are provided on the take-up block, a first sliding groove is provided on the first mounting block, and a first sliding pin is slidably arranged in the first sliding groove; One end of the first hinge rod is hinged to the second mounting block. A third mounting block is fixedly installed on the second shaft. A second sliding groove is opened in the third mounting block. A second sliding pin is slidably installed in the second sliding groove. The second sliding pin is connected to the first hinge rod. A fourth mounting block is fixedly mounted on the first shaft. One end of the second hinge rod is hinged to the fourth mounting block, and the other end of the second hinge rod is connected to the first sliding pin.

[0015] The beneficial effects of this invention are: This invention mechanically couples the actuating wheel with the detonating cord delivery path, directly converting the movement of the detonating cord into the rotational power of the actuating wheel. This power then drives the actuator to convert the rotational motion into hydraulic energy, pumping cooling medium and antistatic agent to the first and buffer wheels. This ensures that the supply rate of cooling and antistatic agents is strictly synchronized with the operating speed of the detonating cord, with automatic start and stop. This fundamentally solves the problems of agent waste, uneven coverage, and management difficulties caused by the asynchronous operation of traditional external cooling systems. Simultaneously, the medium seeps directly from the outlet through the internal channels of the friction wheel to the contact surface of the detonating cord, achieving efficient and uniform direct cooling and wetting. This significantly reduces the risk of localized high temperatures caused by frictional heat generation, improves operational safety, and the entire process requires no external power, making it energy-saving and environmentally friendly.

[0016] This invention integrates a tension overload protection and tension fluctuation buffering mechanism with instantaneous mechanical response. It creatively links the sliding displacement of the buffer wheel with the radial contraction mechanism of the drum assembly, as well as the floating and air pump functions of the second wheel. When the drum jams, causing a surge in detonating cord tension, the overload force compels the buffer wheel and the first sliding seat to slide. This displacement directly pulls the second shaft of the drum assembly through the slide rod and rotating ring, causing the extension unit to radially contract and the drum's outer diameter to decrease instantaneously. This releases the detonating cord length and buffers the overload tension. The entire process is a purely mechanical, instantaneous feedback mechanism, no longer relying on sensor-based electronic control systems, effectively preventing the detonating cord from breaking. Furthermore, the second wheel is floatingly mounted via a telescopic elastic element, absorbing micro-tension fluctuations along the path in real time to maintain stable delivery. The floating process of the second wheel also drives the built-in air pump to deliver compressed air to the third wheel to purge and cool the detonating cord, further improving cleaning and cooling effects and utilizing the energy of the buffering motion. The structure is compact and highly practical.

[0017] This invention, through a single-axis drive and integrated mechanical synchronization structure design, fundamentally solves the technical problems of difficult process coordination and easy mismatch of electrical control synchronization in traditional step-by-step operation modes. The rotating drum, as a single rotating power source, rigidly links the tape winding unit, the explosive cartridge unloading unit, and the binding unit, achieving absolute synchronization in time and space for the three core processes of winding, unloading, and binding. This purely mechanical, hard-connection synchronization mechanism completely eliminates the electrical signal delay, servo response error, and program cycle fluctuations caused by independent multi-motor drives. It ensures that, under high-speed continuous production conditions, the explosive cartridge is accurately delivered to the detonating cord that has been coated with adhesive and whose adhesive layer is still in its optimal viscous flow state, and is immediately and reliably bound. This not only significantly improves the speed and cycle stability of the production process but also, in principle, ensures that the hot melt adhesive can fully fill the microscopic defects on the surface of the detonating cord, forming a dense sealing interface, thereby significantly improving the reliability and safety of the blasting network connection.

[0018] This invention, through highly integrated functional modules and ingenious mechanical structure, achieves fully automated and integrated operation from tape pretreatment, continuous coating of detonating cord, automatic feeding and precise positioning of explosive cartridges to final binding. The device integrates a thermal activation unit for tape pretreatment, a tilting guide groove and a self-locking baffle mechanism for precise guidance and pre-positioning of explosive cartridges, and an eccentric winding disc for automatic release and winding of the binding thread. The entire system is compact, requiring only one drive motor, avoiding complex robotic arms, multi-axis positioning systems, and sophisticated electronic control synchronization programs, significantly reducing manufacturing costs, control complexity, and failure rates. Simultaneously, the continuous assembly line operation mode greatly reduces manual intervention, increasing production efficiency several times over while ensuring consistency and traceability of product connection quality. It provides an efficient, stable, and reliable automated production solution for the industrial blasting field, possessing outstanding practical value and broad application prospects.

[0019] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the detonating cord winding device of the present invention in one direction; Figure 2 This is a schematic diagram of the overall structure of the detonating cord winding device of the present invention from another direction; Figure 3 This is a partial structural schematic diagram of the detonating cord winding device of the present invention; Figure 4In the winding device of the detonating cord of the present invention Figure 3 A partial structural diagram; Figure 5 This is a schematic diagram of the rear structure of the wheel system assembly in the winding device of the detonating cord of the present invention; Figure 6 This is a schematic diagram of the connection structure between the actuator wheel and the actuator in the winding device of the detonating cord of the present invention; Figure 7 This is a cross-sectional schematic diagram of the actuator in the detonating cord winding device of the present invention; Figure 8 This is a schematic diagram of the overall structure of the actuator in the detonating cord winding device of the present invention; Figure 9 This is a schematic diagram of the friction wheel in the winding device of the detonating cord of the present invention; Figure 10 This is a schematic diagram of the telescopic cylinder in the winding device of the detonating cord of the present invention.

[0021] The components include: frame A1, wheel assembly A2, first rotating wheel A21, limiting ring A211, contact shaft A212, mounting shaft A213, inlet channel A214, diversion channel A215, outlet hole A216, buffer rotating wheel A22, actuating wheel A23, actuator A24, rotating shaft A241, actuating housing A242, first piston cylinder A243, second piston cylinder A244, actuating unit A245, first drive block A2451, second drive block A2452, first piston column A2453, second piston column A2454, first connecting rod A2455, second connecting rod A2456, first inlet pipe A246, first outlet pipe A247, second inlet pipe A248, second outlet pipe A249, first sliding seat A25, and sliding... Moving plate A251, slide bar A252, tension spring A253, drum assembly A3, mounting bracket A31, storage assembly A32, first shaft A321, second shaft A322, rotating ring A323, detonating cord A4, second rotating wheel A5, third rotating wheel A6, second sliding seat A71, telescopic elastic element A72, telescopic cylinder A721, telescopic column A722, slip ring A723, spring A724, first air inlet pipe A725, first air outlet pipe A726, extension unit A8, winding block A81, first hinge rod A82, second hinge rod A83, first mounting block A84, second mounting block A85, first sliding groove A86, first sliding pin A87, third mounting block A89, second sliding groove A90, second sliding pin A91, fourth mounting block A92. Detailed Implementation

[0022] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] This embodiment proposes a detonating cord winding device, such as... Figures 1 to 10 As shown, the device includes a frame A1, a wheel system assembly A2 mounted on the frame A1, and a drum assembly A3 for carrying the detonating cord A4. The wheel system assembly A2 includes a first wheel A21, a buffer wheel A22, and an actuating wheel A23 arranged sequentially along the conveying path of the detonating cord A4. The first wheel A21, the buffer wheel A22, and the actuating wheel A23 are all rotatably mounted on the frame A1. An actuator A24 is coaxially connected to the actuating wheel A23. The actuator A24 is connected to both the first wheel A21 and the buffer wheel A22, and is used to transfer the rotational power of the actuating wheel A23. The driving force is converted into the driving force for conveying the medium into the first rotating wheel A21 and the buffer rotating wheel A22; the buffer rotating wheel A22 is mounted on the first sliding seat A25, the first sliding seat A25 is slidably mounted on the frame A1, and the first sliding seat A25 has the tendency to drive the buffer rotating wheel A22 away from the first rotating wheel A21; the drum assembly A3 is connected to the first sliding seat A25, and the first sliding seat A25 can drive the drum assembly A3 to retract radially. During the conveying of the detonating cord A4, the rotation of the actuating wheel A23 synchronously drives the first rotating wheel A21 to cool the contacting detonating cord A4.

[0025] In this embodiment, when the detonating cord A4 is conveyed around the wheel train assembly A2, a traction machine (not shown) is connected to the end of the detonating cord A4. The purpose of the traction machine is to move the detonating cord A4. When the detonating cord A4 is moved, it will drive the actuating wheel A23 in the drive wheel train assembly A2 to rotate. The rotational power of the actuating wheel A23 is converted into hydraulic energy by the coaxial actuator A24, thereby synchronously and automatically delivering cooling medium and antistatic agent to the inside of the first rotating wheel A21 and the buffer rotating wheel A22, so that the detonating cord A4 is cooled in time when it comes into contact with the first rotating wheel A21. At the same time, the first sliding seat A25 on which the buffer rotating wheel A22 is installed maintains a stable position under the action of an elastic element (such as a tension spring A253), maintaining the normal path and tension of the detonating cord A4. When the drum assembly A3 jams, causing the detonating cord A4 to have an abnormally increased tension, the increased tension forces the buffer wheel A22 and the first sliding seat A25 to overcome the tension of the elastic element and produce a sliding displacement. This displacement is transmitted to the drum assembly A3, forcing the extension unit A8 of the drum assembly A3 to produce a radial contraction, reducing the outer diameter of the drum assembly A3 and releasing part of the winding length, thereby efficiently buffering the overload tension and preventing the detonating cord A4 from being pulled apart. The entire process does not require external power or complex control, realizing complete self-drive and instantaneous mechanical feedback from power acquisition, safe handling to overload protection.

[0026] In a preferred embodiment, the first rotating wheel A21 and the buffer rotating wheel A22 have the same structure, both being friction wheels. Each friction wheel includes two limiting rings A211, a contact shaft A212, and a mounting shaft A213. The contact shaft A212 is disposed between the two limiting rings A211, and both ends of the contact shaft A212 are connected to the two limiting rings A211. One end of the mounting shaft A213 passes through one of the limiting rings A211 and is coaxially rotatably connected to the contact shaft A212. The mounting shaft A213 is mounted on the frame A1. A liquid inlet channel A214 is provided inside the mounting shaft A213, and a diversion channel A215 is provided inside the contact shaft A212. Several liquid outlet holes A216 are provided on the outer periphery of the contact shaft A212, and each liquid outlet hole A216 communicates with the diversion channel A215. The liquid inlet channel A214 communicates with the diversion channel A215.

[0027] When actuator A24 introduces coolant or antistatic agent into inlet channel A214, the medium first flows into distribution channel A215 inside contact shaft A212, which is coaxially rotatably connected to mounting shaft A213. Contact shaft A212, driven by friction from detonating cord A4, can freely rotate relative to the stationary mounting shaft A213. Internal distribution channel A215 acts as a distribution chamber, evenly distributing the medium to several outlet holes A216 arranged circumferentially on the shaft. Because detonating cord A4 is constrained by two... Between the fixed limiting rings A211, and always in frictional contact with the outer surface of the rotating contact shaft A212, the coolant or antistatic agent seeping from the liquid outlet A216 can be directly, continuously and evenly coated or soaked in the contact area of ​​the detonating cord A4, achieving efficient direct cooling and antistatic treatment; throughout the process, the limiting rings A211 not only guide and prevent the detonating cord A4 from deviating, but also form a local cooling chamber, achieving the effect of cooling the detonating cord A4.

[0028] In a preferred embodiment, a rotating shaft A241 is coaxially fixedly connected to the upper part of the actuating wheel A23, and the rotating shaft A241 is rotatably mounted on the frame A1; the actuator A24 includes an actuating housing A242, a first piston cylinder A243, a second piston cylinder A244, and an actuating unit A245. The actuating housing A242 is fixedly mounted on the frame A1, the actuating unit A245 is rotatably disposed inside the actuating housing A242, the first piston cylinder A243 and the second piston cylinder A244 are fixedly disposed on the actuating housing A242, and the first piston cylinder A243 is connected to a first inlet pipe A246 and a first outlet pipe. A247, the first inlet pipe A246 is equipped with a first check valve, and the first outlet pipe A247 is equipped with a second check valve; the second piston cylinder A244 is connected to the second inlet pipe A248 and the second outlet pipe A249, the second inlet pipe A248 is equipped with a third check valve, and the second outlet pipe A249 is equipped with a fourth check valve; the first outlet pipe A247 is connected to the inlet flow channel A214 of the first rotor A21, and the second outlet pipe A249 is connected to the inlet flow channel A214 of the buffer rotor A22; the first inlet pipe A246 is connected to coolant, and the second inlet pipe A248 is connected to an antistatic agent.

[0029] In this embodiment, when the actuating wheel A23 is driven to rotate by the moving detonating cord A4, the rotating shaft A241, which is coaxially connected to the actuating wheel A23, rotates synchronously, driving the actuating unit A245, which is located in the actuating housing A242, to rotate. The rotational motion is converted into reciprocating linear motion of the first piston rod A2453 in the first piston cylinder A243 and the second piston rod A2454 in the second piston cylinder A244 through the linkage mechanism. The entire actuation process is strictly synchronized with the running speed of the detonating cord A4, realizing adaptive medium supply without external power.

[0030] Furthermore, the actuation unit A245 includes a first drive block A2451, a second drive block A2452, a first piston rod A2453, and a second piston rod A2454. The first drive block A2451 and the second drive block A2452 are misaligned. The first piston rod A2453 is slidably connected in a sealed manner within the first piston cylinder A243. A first connecting rod A2455 is hinged to the first piston rod A2453 and is hinged to the first drive block A2451. The second piston rod A2454 is slidably connected in a sealed manner within the second piston cylinder A244. A second connecting rod A2456 is hinged to the second piston rod A2454 and is hinged to the second drive block A2452. One end of the rotating shaft A241 passes through the actuation housing A242 and is connected to the first drive block A2451.

[0031] The continuous rotation of the actuator wheel A23 is converted into alternating reciprocating motion of two piston rods (first piston rod A2453 and second piston rod A2454) with a phase difference of degrees, thereby achieving stable and continuous pumping of coolant and antistatic agent. The specific working process is as follows: When the detonating cord A4 pulls the actuator wheel A23 and the rotating shaft A241 fixed to it, the rotating shaft A241 directly drives the first drive block A2451 connected to it to rotate synchronously. The rotation of the second drive block A2452 is converted into linear reciprocating motion of the second piston rod A2454 within the second piston cylinder A244 via the second connecting rod A2456, initiating the pumping of the antistatic agent. Meanwhile, since the first drive block A2451 and the second drive block A2452 are connected in a staggered manner, the rotation of the second drive block A2452 will drive the first drive block A2451 to rotate through the staggered structure. However, there is a fixed phase difference between their movements. This phase difference ensures that when the first drive block A2451 drives the first piston rod A2453 through the first connecting rod A2455, the stroke of the first piston rod A2454 is exactly staggered with the stroke of the second piston rod A2454. This design ensures that when one piston rod is in the compression stroke (forward pumping of medium), the other piston rod is in the suction stroke (suction of medium).

[0032] In a preferred embodiment, the device further includes a second rotating wheel A5 and a third rotating wheel A6. A second sliding seat A71 is mounted on the bottom of the second rotating wheel A5. A telescopic elastic element A72 is provided between the second sliding seat A71 and the frame A1. The third rotating wheel A6 is rotatably mounted on the frame A1. The second rotating wheel A5 is located between the actuating wheel A23 and the third rotating wheel A6. The telescopic elastic element A72 has a tendency to drive the second rotating wheel A5 away from the third rotating wheel A6. The telescopic elastic element A72 includes a telescopic cylinder A721, a telescopic column A722, and a slip ring A723. The slip ring A723 is slidably connected inside the telescopic cylinder A721. The telescopic column A722 is fixedly connected to the slip ring A723, and one end of the telescopic column A722 extends out of the telescopic cylinder A721 and is fixedly connected to the second sliding seat A71. The telescopic cylinder A721 is fixedly installed on the frame A1. A spring A724 is provided inside the telescopic cylinder A721. The spring A724 has a tendency to drive the telescopic column A722 to extend outward.

[0033] After the detonating cord A4 is led out from the actuating wheel A23, it passes around the movable second wheel A5 and finally guides to the fixed third wheel A6. Under normal conveying tension, the second sliding seat A71 installed at the bottom of the second wheel A5 is pushed by the spring A724 in the lower telescopic elastic member A72. This push is transmitted through the telescopic column A722, so that the second wheel A5 always maintains a tendency to move away from the third wheel A6, thereby applying a constant and flexible tension to the detonating cord A4, ensuring reliable contact between the detonating cord A4 and each wheel without slack. When slight fluctuations in external traction speed or drum release speed cause an increase in path tension, the increased tension overcomes the preload of spring A724, forcing the second wheel A5, along with the second sliding seat A71, to move toward the third wheel A6. At this time, the telescopic column A722 retracts into the telescopic drum A721, compressing spring A724 and causing the sealing slip ring A723 to slide inside the drum. This process absorbs and buffers the instantaneous peak of tension. Conversely, when the tension decreases, the compressed spring A724 quickly releases its stored energy, pushing the telescopic column A722 and the second wheel A5 to reset, re-tightening the detonating cord A4. As a mechanical damper, the floating of the second wheel A5 compensates for minute changes in length and tension fluctuations in real time, ensuring that the detonating cord A4 maintains a stable and uniform tension state throughout the entire conveying path, especially before entering the subsequent processing or winding stage. This effectively prevents slippage, accumulation, or increased wear caused by sudden changes in tension.

[0034] In one embodiment, the third rotating wheel A6 is also a friction wheel. A first air inlet pipe A725 and a first air outlet pipe A726 are connected to the telescopic cylinder A721. A fifth one-way valve is installed at the first air inlet pipe A725, and a sixth one-way valve is installed at the first air outlet pipe A726. The first air outlet pipe A726 is connected to the third rotating wheel A6. When the tension fluctuation of the detonating cord A4 drives the second rotating wheel A5 and its bottom second sliding seat A71 to move, the telescopic column A722, which is fixed to the sliding seat, will synchronously drive the sealing slip ring A723 to slide back and forth within the telescopic cylinder A721. This process creates a sealed air chamber with periodically changing volume inside the telescopic cylinder A721. Specifically, when the tension of the detonating cord A4 increases and the second wheel A5 is forced to move towards the third wheel A6, the telescopic column A722 retracts inward, pushing the slip ring A723 to compress the air chamber. The air pressure inside the chamber increases, and at this time, the fifth one-way valve (check valve) on the first air inlet pipe A725 closes under the pressure difference, while the sixth one-way valve on the first air outlet pipe A726 opens. Compressed air is then pumped out through the first air outlet pipe A726 and delivered to the interior of the third wheel A6. Conversely, when the tension decreases and the spring A724 pushes the second wheel A5 back to its original position, the telescopic column A722 extends outward, increasing the volume of the air chamber and creating negative pressure. At this time, the sixth one-way valve closes to prevent backflow, while the fifth one-way valve opens, drawing in air from the outside to replenish the air chamber. Thus, each floating cycle of the second wheel A5 with changes in tension drives this built-in air pump to complete one intake and exhaust process. The pumped compressed air is introduced into the third rotor A6 through the first exhaust pipe A726 and blown out from the micropores on the surface of the third rotor A6, directly acting on the surface of the detonating cord A4 that is passing through the third rotor A6. This synchronously generated airflow effectively removes any excess droplets that may have remained on the detonating cord A4 during the previous cooling and coating process, achieving contact-based air cooling and cleaning. This not only further reduces the risk of frictional overheating and keeps the surface of the detonating cord A4 dry and clean, ensuring the reliability of subsequent processes (such as connecting the explosive cartridges), but more importantly, the power required for cleaning comes entirely from the mechanical motion inherent in the system itself, which is used to buffer tension, requiring no additional energy or control.

[0035] In a preferred embodiment, the first sliding seat A25 includes a sliding plate A251, a sliding rod A252, and a tension spring A253. The buffer wheel A22 rotates and is mounted on the sliding plate A251. The sliding rod A252 is slidably mounted on the frame A1, with one end of the sliding rod A252 connected to the sliding plate A251 and the other end of the sliding rod A252 connected to a rotating ring A323. One end of the tension spring A253 is connected to the frame A1, and the other end of the tension spring A253 is connected to the sliding plate A251.

[0036] The reel assembly A3 includes a mounting bracket A31 and a storage assembly A32, the storage assembly A32 being rotatably mounted on the mounting bracket A31. The storage assembly A32 includes a first shaft A321 rotatably connected to the mounting bracket A31 and a second shaft A322 coaxially disposed with respect to the first shaft A321. The second shaft A322 is configured to be axially displaced relative to the first shaft A321 along the axial direction of the first shaft A321. The second shaft A322 is rotatably connected to a rotating ring A323. A plurality of radially movable spacers are provided between the first shaft A321 and the second shaft A322. The expansion unit A8 is deformable. One end of the expansion unit A8 is connected to the first shaft A321, and the other end of the expansion unit A8 is connected to the second shaft A322. In response to the relative axial displacement between the first shaft A321 and the second shaft A322 approaching, the expansion unit A8 is forced to undergo radial expansion deformation, resulting in an increase in the outer diameter of the expansion unit A8. In response to the relative axial displacement between the first shaft A321 and the second shaft A322 moving away, the expansion unit A8 is forced to undergo radial contraction deformation, resulting in a decrease in the outer diameter of the expansion unit A8.

[0037] Furthermore, the extension unit A8 includes a take-up block A81, a first hinge rod A82 and a second hinge rod A83 arranged intersecting each other, a first mounting block A84 and a second mounting block A85 are provided on the take-up block A81, a first sliding groove A86 is provided on the first mounting block A84, and a first sliding pin A87 is slidably arranged in the first sliding groove A86. One end of the first hinge rod A82 is hinged to the second mounting block A85. A third mounting block A89 is fixedly installed on the second shaft A322. A second sliding groove A90 is opened in the third mounting block A89. A second sliding pin A91 is slidably installed in the second sliding groove A90 and is connected to the first hinge rod A82. A fourth mounting block A92 is fixedly installed on the first shaft A321. One end of the second hinge rod A83 is hinged to the fourth mounting block A92, and the other end of the second hinge rod A83 is connected to the first sliding pin A87.

[0038] During normal delivery of the detonating cord A4, the first sliding seat A25, equipped with the buffer wheel A22, remains stationary under the constant tension of the tension spring A253. The rotating ring A323 at the end of the sliding rod A252 limits the second shaft A322 of the drum assembly A3 to a specific position, causing several extension units A8 connected to the first shaft A321 to be in an expanded state. At this time, the first hinge rod A82 and the second hinge rod A83, which are cross-hinged, form a large angle, pushing the winding block A81 to extend outward, thereby maintaining the drum at its maximum outer diameter to carry the detonating cord A4. When the drum jams, causing an abnormal increase in the tension of the detonating cord A4, At this time, the overload tension acting on the buffer wheel A22 will immediately overcome the preload of the tension spring A253, driving the entire sliding plate A251 together with the sliding rod A252 to slide along the frame A1 towards the first wheel A21. This linear displacement is converted into an axial tension on the second shaft A322 without delay through the rotating ring A323, forcing the second shaft A322 to move away from the first shaft A321 along its axis. The increase in the relative distance between the two shafts forces a forced change in the geometry of each extension unit A8. As the third mounting block A89 on the second shaft A322 moves away from the first shaft A321... The fourth mounting block A92, the intersection of the first hinge rod A82 and the second hinge rod A83 moves, the included angle between them decreases rapidly, and the entire "X"-shaped linkage mechanism is "flattened"; during this process, the first hinge rod A82 slides in the second slide groove A90 through the connected second sliding pin A91 to adapt to the angle change, while the second hinge rod A83 slides in the first slide groove A86 of the take-up block A81 by pulling the first sliding pin A87, converting the axial displacement into a linear retraction motion of the take-up block A81 in the radial direction; all circumferentially distributed extension units A8 retract synchronously, resulting in The effective winding outer diameter of the drum decreases instantaneously; the reduction in drum diameter means that an additional length of detonating cord A4 is "released" from the system in an instant. This mechanically released length directly offsets the excessive stretching demand caused by the jamming at the front and the strong pull at the rear, thus releasing the peak tension on the detonating cord A4 and avoiding the risk of breakage. The entire process requires no sensor or circuit intervention. This mechanism creatively integrates tension sensing, signal transmission and execution protection into a simple mechanical framework, achieving zero-delay overload response. The structure is compact, and this invention has high application value.

[0039] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A device for winding detonating cord, characterized in that, include: The frame (A1), the wheel assembly (A2) mounted on the frame (A1), and the drum assembly (A3) for carrying the detonating cord (A4). The wheel assembly (A2) includes a first wheel (A21), a buffer wheel (A22), and an actuating wheel (A23) arranged sequentially along the detonating cord (A4) delivery path; the actuating wheel (A23) is coaxially connected to an actuator (A24), which is connected to both the first wheel (A21) and the buffer wheel (A22), and is used to convert the rotational power of the actuating wheel (A23) into a driving force for delivering the medium into the first wheel (A21) and the buffer wheel (A22); The buffer wheel (A22) is mounted on a first sliding seat (A25), which is slidably mounted on the frame (A1), and the first sliding seat (A25) has a tendency to drive the buffer wheel (A22) away from the first wheel (A21); The drum assembly (A3) is connected to the first sliding seat (A25). The first sliding seat (A25) can drive the drum assembly (A3) to retract radially. During the conveying of the detonating cord (A4), the rotation of the actuating wheel (A23) synchronously drives the first rotating wheel (A21) to cool the contacting detonating cord (A4).

2. The detonating cord winding device according to claim 1, characterized in that: Both the first rotating wheel (A21) and the buffer rotating wheel (A22) are friction wheels. Each friction wheel includes two limiting rings (A211), a contact shaft (A212), and a mounting shaft (A213). The contact shaft (A212) is disposed between the two limiting rings (A211), and both ends of the contact shaft (A212) are connected to the two limiting rings (A211). One end of the mounting shaft (A213) passes through one of the limiting rings (A211) and is coaxially rotatably connected to the contact shaft (A212). The mounting shaft (A213) is mounted on the frame (A1). The mounting shaft (A213) has an inlet channel (A214), the contact shaft (A212) has a diversion channel (A215), and the outer periphery of the contact shaft (A212) has a plurality of outlet holes (A216). Each outlet hole (A216) is connected to the diversion channel (A215), and the inlet channel (A214) is connected to the diversion channel (A215).

3. The detonating cord winding device according to claim 2, characterized in that: A rotating shaft (A241) is coaxially connected to the actuating wheel (A23), and the rotating shaft (A241) is rotatably mounted on the frame (A1); The actuator (A24) includes an actuator housing (A242), a first piston cylinder (A243), a second piston cylinder (A244), and an actuator unit (A245). The actuator unit (A245) is rotatably disposed inside the actuator housing (A242). The first piston cylinder (A243) and the second piston cylinder (A244) are fixedly disposed on the actuator housing (A242). The first piston cylinder (A243) is connected to a first inlet pipe (A246) and a first outlet pipe (A247). The first inlet pipe (A246) is provided with a first check valve, and the first outlet pipe (A247) is provided with a second check valve. The second piston cylinder (A244) is connected to a second inlet pipe (A248) and a second outlet pipe (A249). The second inlet pipe (A248) is equipped with a third check valve, and the second outlet pipe (A249) is equipped with a fourth check valve. The first liquid outlet pipe (A247) is connected to the liquid inlet channel (A214) of the first impeller (A21), and the second liquid outlet pipe (A249) is connected to the liquid inlet channel (A214) of the buffer impeller (A22); the first liquid inlet pipe (A246) is connected to coolant, and the second liquid inlet pipe (A248) is connected to antistatic agent.

4. The winding device for detonating cord according to claim 3, characterized in that: The actuation unit (A245) includes a first drive block (A2451), a second drive block (A2452), a first piston rod (A2453), and a second piston rod (A2454). The first drive block (A2451) and the second drive block (A2452) are connected in a staggered manner. The first piston rod (A2453) is slidably connected within the first piston cylinder (A243). A first connecting rod (A2455) is hinged to the first piston rod (A2453). The connecting rod (A2455) is hinged to the first drive block (A2451), the second piston rod (A2454) is slidably connected in the second piston cylinder (A244), the second piston rod (A2456) is hinged to the second piston rod (A2454), the second connecting rod (A2456) is hinged to the second drive block (A2452), and one end of the rotating shaft (A241) passes through the actuating housing (A242) and is connected to the first drive block (A2451).

5. The detonating cord winding device according to claim 4, characterized in that: It also includes a second rotating wheel (A5) and a third rotating wheel (A6). The bottom of the second rotating wheel (A5) is equipped with a second sliding seat (A71). A telescopic elastic element (A72) is provided between the second sliding seat (A71) and the frame (A1). The third rotating wheel (A6) is rotatably mounted on the frame (A1). The second rotating wheel (A5) is located between the actuating wheel (A23) and the third rotating wheel (A6). The telescopic elastic element (A72) has a tendency to drive the second rotating wheel (A5) away from the third rotating wheel (A6).

6. The winding device for detonating cord according to claim 5, characterized in that: The telescopic elastic element (A72) includes a telescopic cylinder (A721), a telescopic column (A722), and a slip ring (A723). The slip ring (A723) is slidably connected to the telescopic cylinder (A721). The telescopic column (A722) is fixedly connected to the slip ring (A723), and one end of the telescopic column (A722) extends out of the telescopic cylinder (A721) and is fixedly connected to the second sliding seat (A71). The telescopic cylinder (A721) is fixedly installed on the frame (A1). A spring (A724) is provided inside the telescopic cylinder (A721), and the spring (A724) has a tendency to drive the telescopic column (A722) to extend outward.

7. The detonating cord winding device according to claim 6, characterized in that: The third rotating wheel (A6) is a friction wheel. The telescopic cylinder (A721) is connected to a first air inlet pipe (A725) and a first air outlet pipe (A726). A fifth one-way valve is provided at the first air inlet pipe (A725), and a sixth one-way valve is provided at the first air outlet pipe (A726). The first air outlet pipe (A726) is connected to the third rotating wheel (A6).

8. The winding device for detonating cord according to claim 7, characterized in that: The first sliding seat (A25) includes a sliding plate (A251), a sliding rod (A252), and a tension spring (A253). The buffer wheel (A22) rotates and is mounted on the sliding plate (A251). The sliding rod (A252) is slidably mounted on the frame (A1), and one end of the sliding rod (A252) is connected to the sliding plate (A251). The other end of the sliding rod (A252) is connected to a rotating ring (A323). One end of the tension spring (A253) is connected to the frame (A1), and the other end of the tension spring (A253) is connected to the sliding plate (A251).

9. The winding device for detonating cord according to claim 8, characterized in that: The reel assembly (A3) includes a mounting bracket (A31) and a storage assembly (A32), the storage assembly (A32) being rotatably mounted on the mounting bracket (A31); The storage assembly (A32) includes a first shaft (A321) rotatably connected to the mounting bracket (A31) and a second shaft (A322) coaxially disposed with respect to the first shaft (A321). The second shaft (A322) is configured to be axially displaced relative to the first shaft (A321) along the axial direction. The second shaft (A322) is rotatably connected to the rotating ring (A323). A plurality of radially deformable extension units (A8) are provided between the first shaft (A321) and the second shaft (A322). One end of the extension unit (A8) is connected to the first shaft (A321), and the other end of the extension unit (A8) is connected to the second shaft (A322). In response to the approaching relative axial displacement between the first shaft (A321) and the second shaft (A322), the extension unit (A8) is forced to undergo radial expansion deformation, resulting in an increase in the outer diameter of the extension unit (A8); In response to the relative axial displacement between the first shaft (A321) and the second shaft (A322) moving away, the extension unit (A8) is forced to undergo radial contraction deformation, resulting in a reduction in the outer diameter of the extension unit (A8).

10. The winding device for detonating cord according to claim 9, characterized in that: The extension unit (A8) includes a take-up block (A81), a first hinge rod (A82) and a second hinge rod (A83) arranged intersecting each other. The take-up block (A81) is provided with a first mounting block (A84) and a second mounting block (A85). The first mounting block (A84) is provided with a first sliding groove (A86), and a first sliding pin (A87) is slidably disposed in the first sliding groove (A86). One end of the first hinge rod (A82) is hinged to the second mounting block (A85). A third mounting block (A89) is fixedly installed on the second shaft (A322). A second sliding groove (A90) is provided in the third mounting block (A89). A second sliding pin (A91) is slidably installed in the second sliding groove (A90). The second sliding pin (A91) is connected to the first hinge rod (A82). A fourth mounting block (A92) is fixedly mounted on the first shaft (A321). One end of the second hinge rod (A83) is hinged to the fourth mounting block (A92), and the other end of the second hinge rod (A83) is connected to the first sliding pin (A87).

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