128 results about "Gunpowder" patented technology

The invention discloses a parallel counter-rotating double-screw structure for gunpowder processing, which is composed of two screws which are arranged in parallel and have opposite thread directions, and the thread arrangement structures of the two screws are consistent; each screw sequentially comprises a screw head, a feeding section, a mixing and shearing section, an exhaust section and a metering section from front to back, the depths of screw grooves of all threaded sections are consistent, the screw head is of a conical structure, the length of the screw head is 0.5 times of the diameter of the screw, the length of the feeding section is 4-6 times of the diameter of the screw, and the metering section is of a conical structure. The mixing shearing section is composed of a front shearing section and a rear shearing section with different screw pitches, the total length of the mixing shearing section is 4-7 times of the diameter of the screw rod, the length of the exhaust section is 2-4 times of the diameter of the screw rod, and the length of the metering section is 3-5 times of the diameter of the screw rod. According to the parallel counter-rotating double-screw structure, stable conveying, efficient mixing and extrusion forming of high-viscosity and high-solid-content gunpowder are achieved.

The utility model relates to the technical field of gunpowder hangers, in particular to a lifting type gunpowder hanger which comprises a bottom plate, first supporting legs are arranged on the front side of the bottom of the bottom plate in a bilateral symmetry mode, second supporting legs are arranged on the rear side of the bottom of the bottom plate in a bilateral symmetry mode, and first adjusting rods are arranged on the front side of the base surface of the bottom plate in a bilateral symmetry mode. Second adjusting rods are arranged on the rear side of the base face of the bottom plate in a bilateral symmetry mode, a fixing assembly is arranged on the gunpowder hanger, the fixing rods are pulled outwards and rotated, the fixing rods are limited through clamping blocks, the fixing rods are made to be far away from the interiors of first adjusting holes and the interiors of second adjusting holes, and the gunpowder hanger is more convenient to use. The positions of the placing frames can be adjusted by sliding the first adjusting sleeves and the second adjusting sleeves correspondingly, so that the placing frames can be adjusted to proper positions according to needs, multiple sets of placing frames can be arranged according to needs, drying is more convenient, and the whole device is simple in structure, convenient to operate and higher in practicability.

The invention belongs to the technical field of deep underground target penetration, and particularly relates to an energy gathering / kinetic energy series penetration structural body which comprises a charging shell, the front end of the charging shell is provided with an opening, a shaped charge liner is arranged at the opening of the front end of the charging shell in an adhesive mode, the rear end of the charging shell is fixedly connected with a rear-stage connecting part, and the rear-stage connecting part is fixedly connected with the charging shell. The rear end of the rear-stage connecting part is connected with a rear-stage main projectile body, a charging buffer layer is arranged at the front end of an inner cavity of the rear-stage main projectile body, a rear-stage fuze is installed at the rear end of the rear-stage main projectile body, and the charging shell and the rear-stage main projectile body are both filled with gunpowder. Wide-speed-range penetration is achieved through the series connection structure, the rear-stage connecting part extends into the charging shell to be in threaded connection with the charging shell, the rear-stage connecting part is protected against damage by utilizing three-direction pressure stress generated by explosive detonation, meanwhile, the length of the rear-stage connecting part can be adjusted, the rear-stage connecting part is used for protecting a penetration projectile body structure under the condition of different penetration target-hitting speeds, and the penetration target-hitting speed is improved. And therefore, the purpose of increasing the penetration power is achieved.

The present application relates to the technical field of tunnel blasting, in particular to a kind of energy-gathering tube smooth blasting tool and construction process.The tool includes tool main body, and the tool main body includes installation strip;Explosive roll is equipped at the side wall of installation strip;Explosive roll includes sleeve, and sleeve inside is equipped with energy-gathering tube;The one end of energy-gathering tube that extends sleeve is equipped with energy-gathering cover;Energy-gathering tube side wall is equipped with strip-shaped hole;The distance between the side wall of both ends of strip-shaped hole gradually increases from the one end of energy-gathering tube close to energy-gathering cover to the other end of energy-gathering tube.The process includes S1, mark installation hole position;S2, drill installation hole;S3, energy-gathering tube assembly;S4, middle explosive roll production;S5, bottom explosive roll production;S6, explosive roll installation;S7, hole drilling;S8, connection, detonation;For the defects in the prior art, the present application can solve the problem that the amount of powder is reduced after the energy-gathering tube is loaded into the emulsified explosive shell, and the explosion power of emulsified explosive can be improved under the condition that the amount of powder is not convenient.

This utility model relates to a fireworks assembly production line, comprising: a conveyor bus, and a firing gunpowder filling unit, a bottom paper pressing unit, an inner tube filling unit, and a top paper pressing unit arranged sequentially along the conveyor bus; the inner tube filling unit includes a material sorting device, a conveying device, a pushing device, a guiding device, and a pressing device; the material sorting device is used to remove the binding straps from the inner tube of the fireworks and push the inner tubes of the fireworks layer by layer into the conveying device; the conveying device is used to transport the inner tubes of the fireworks to the pushing device; the pushing device is located on one side of the conveying device and is used to push the inner tubes of the fireworks into the guiding device located on the other side of the conveying device; the pressing device is used to press the inner tubes of the fireworks in the guiding device into the outer tube of the fireworks. This application provides a fireworks assembly production line that can realize the automatic untying of the inner tubes of fireworks and the automatic assembly of the inner and outer tubes of fireworks, thereby reducing manual intervention and improving production safety.

The utility model relates to the field of gunpowder technology, and disclose ignition powder loosening device, include: device shell, feed pipe and filter piece, the feed pipe is connected in the upper surface of device shell, filter piece is connected in the lateral wall of feed pipe, still include: crushing mechanism, drying mechanism and filter mechanism, the crushing mechanism sets up in the upper end of device shell, drying mechanism sets up in the lower extreme inside device shell, filter mechanism sets up in the inside of filter piece, the utility model discloses through the negative pressure fan can suck the dust that the gunpowder broke down produced into the filter piece, and the dust is filtered through the filter plate, make the filtered air to export to the outside, and then effectively reduce the dust to float in the air, drive motor drives the rotation of transmission rod, and then drive the rotation of crushing knife, can crush the gunpowder raw material of input, make the agglomerated gunpowder be scattered, and then guarantee the effect that gunpowder is used subsequently, realize the function of loosening.

The present application relates to a kind of hydraulic pressure deep well source device of thermal expansion, which is mainly composed of upper joint, pressure cylinder, ignition fuse, thermal expansion agent, pressure ring, shear piece, tail joint and sealing ring.The upper joint and pressure cylinder are connected by thread, the pressure cylinder is filled with thermal expansion agent, the ignition fuse is placed in the expansion agent in the pressure cylinder through the center hole of the upper joint, the tail joint and the other end of the pressure cylinder are connected by thread and sealed by the sealing ring, the pressure ring is placed in the tail joint near the end of the pressure cylinder, the pressure ring presses the shear piece in the tail joint, and the pressure ring, the tail joint and the shear piece are sealed by the sealing ring.The pressure cylinder and its structure design make the source device can be lowered into deep well for triggering, in addition to ground can be seismic, it can also be lowered into deep well for seismic, whether on the ground or in the well, it can replace the dynamite source;It is safe and reliable, avoids explosives, and solves the source problem.

The utility model discloses a combined firework barrel gunpowder filling device which comprises a compression filling mechanism and supporting frames arranged on the two sides of the compression filling mechanism, and a discharging groove is formed between the two supporting frames. A combined firework cylinder needing to be filled with gunpowder is placed on the placing table in the compression filling mechanism, the gunpowder needing to be filled is placed in the discharging hopper, the gunpowder is discharged through the discharging opening in the lower portion of the discharging hopper, and then all modules of a filling pipe assembly on the compression filling mechanism are discharged. When the number of filling modules of a filling pipe assembly on the compression filling mechanism is different, two blocking blocks are adjusted through an adjusting assembly to slide towards the middle position of a discharging groove at the same time, discharging openings are blocked, the needed number of discharging openings are reserved, and when discharging is conducted again through the discharging groove, powder filling is achieved. And the materials are only discharged from the corresponding number of discharge ports, so that the filling requirements of the pipe compression filling mechanism with different numbers of filling modules are met.

The present invention relates to a method for improving flight stability, effective range, accuracy, and destructive force by moving the center of gravity of a bullet (shell) forward, and the bullet (shell). To this end, the front part of a counterweight jacket of the bullet (shell) is designed to be thicker or higher in density than the rear part thereof, so that the center of gravity is naturally moved forward. This structural feature stabilizes the trajectory by minimizing the yaw angle during flight, and increases the force of impact transmission to the target. In addition, a material having a low specific gravity is used inside a gunpowder contact part and the rear part to further strengthen the effect of moving the center of gravity to the front part. The present invention can maintain a stable flight trajectory in both ground and underwater environments, and maximizes the performance of a bullet (shell) to increase an effective range, destructive force, and accuracy.

The invention belongs to the technical field of fire extinguishing test systems, and discloses a rapid fire extinguishing test system for explosive fire and a test method thereof.The rapid fire extinguishing test system comprises a storage box, an electromagnetic valve is arranged above the storage box and fixedly communicated with a spray head, and a control mechanism, an ignition mechanism and a water supply mechanism are arranged on one side of the storage box; the control mechanism is used for controlling the electromagnetic valve, the ignition mechanism and the water supply mechanism and detecting whether the gunpowder is burnt or not, and the ignition mechanism is used for igniting the gunpowder; the controller is arranged on one side of the storage box and is in circuit connection with the electromagnetic valve, the ignition mechanism and the water supply mechanism, and the high-speed detector is arranged on one side of the storage box and is in circuit connection with the control mechanism. According to the method and the device, through improvement of the prior art, the optimal fire extinguishing response time can be judged according to different response time, different fire extinguishing water pressures and the residual weight of the gunpowder under different conditions, so that the optimal fire extinguishing scheme is selected, and the fire extinguishing effect is favorably improved.

The utility model belongs to the field of structural design of smoothbore projectile ammunition, and particularly relates to an air closing device suitable for projectile launching of a recoil-free cannon, which can be used for closing air between a projectile and the recoil-free cannon. The air closing device comprises a switching body, an air closing ring and a pressing plate, and the air closing ring is located between the switching body and the pressing plate. The gunpowder gas launched by the recoil-free gun and the ductility of the non-metal gas closing ring are ingeniously utilized, and the problem that the bullets are closed in the launch process of the smoothbore gun is solved. After the artillery is launched, the gas closing ring is cut off in the bullet squeezing-in process, and gunpowder gas expands the gas closing ring outwards to enable the gas closing ring to be tightly attached to the wall of a gun bore, so that the gas closing effect is achieved; the utility model has the advantages of simple structure, reliable function, convenience in processing and assembling, large popularization and application space and the like.

The utility model relates to fireworks production technical field especially relates to a material distribution and mixing device with explosion -proof function, the utility model provides a material distribution and mixing device with explosion -proof function can discharge dust in time in the mixing process, effectively avoid the dust accumulation produces the security risk, a material distribution and mixing device with explosion -proof function, including the placing table, telescopic column, first spring and material collecting hopper etc. The utility model under the negative pressure suction effect of the air pump makes the dust in the explosion -proof cover and material collecting hopper discharge in turn through the connecting cover and connecting pipe, and the gunpowder particles in the explosion -proof cover and material collecting hopper in the intercepting net are intercepted and filtered, which can discharge dust in time in the mixing process, effectively avoid the dust accumulation produces the security risk.

The utility model discloses an integrated nail for building installation, which relates to the technical field of building installation, and comprises a metal nail and a nail head shell arranged at the top of the metal nail, the nail head shell comprises an outer shell and a propellant powder shell, the inner top of the outer shell is provided with an assembly cavity, and the propellant powder shell is assembled at the inner top of the assembly cavity. The inner diameter of the end, close to the metal nail, of the assembly cavity is shrunk to form an energy gathering part, the bottom end of the propellant powder shell is located at the top of the energy gathering part, so that the distance between the tail end of the metal nail and the propellant powder shell is increased, and at the moment of firing, high-energy gas generated by gunpowder gas expansion achieves gas gathering through the energy gathering part; according to the integrated nail fastener, the metal nail can be quickly ejected outwards along the launching tube, the percussion performance is improved, meanwhile, plastic lengthening is utilized, energy of propellant powder is gathered, the gap between the plastic lengthening section and an inner hole of the launching tube after percussion is reduced, and the purposes that the performance is improved and the integrated nail fastener adapts to various launching tube calibers are achieved.

The invention discloses a method for analyzing the reliability of a gunpowder igniter in a low-temperature ignition failure mode, which comprises the following steps of: firstly, carrying out characterization analysis on the ignition failure mode of the gunpowder igniter in a low-temperature environment, identifying main uncertain factors influencing the low-temperature ignition reliability by adopting a fault tree method (FTA), and determining the probability distribution characteristic of the main uncertain factors; then, an implicit performance function of the failure mode is established. In order to clarify a deterministic relationship between a performance parameter and a design variable, an inner ballistic simulation model for low-temperature ignition of a gunpowder igniter is constructed based on an inner ballistic theory, and a Kriging agent model is further established by using the simulation model. And finally, sampling and solving the Kriging model through an MCS method (Monte Carlo simulation) to obtain the failure probability and reliability of the low-temperature ignition failure mode of the gunpowder igniter. The reliability of the gunpowder igniter under the low-temperature condition can be accurately evaluated, and a theoretical basis is provided for product improvement design.

The invention discloses an injection assembly and an air inflation device, and relates to the technical field of gas generators, the air inflation device comprises the air inflation assembly and the injection assembly, the injection assembly comprises an injection main pipe and a branch pipe, one end of the injection main pipe is connected with the air inflation assembly, and the other end of the injection main pipe is used for being connected with an air bag; the branch pipe is connected between the two ends of the main injection pipe and can drive external air to enter the main injection pipe when gas circulates in the main injection pipe. The inflation assembly of the inflation device provided by the invention is provided with the gas generator, the gas generator can generate a large amount of gas during ignition and combustion, and when the gas circulates in the injection main pipe, the branch pipe is driven by the Venturi tube principle to drive external air to enter the injection main pipe; according to the gas generator, the external cold air is mixed with the gas generated by the gas generator, so that the inflating amount of the gas bag is increased, the inflating requirement of the gas bag is met, the gunpowder amount requirement of the gas generator is effectively reduced, and the cost is low.

The invention discloses a strong alkali cleaning agent for stubborn gunpowder residues. The strong alkali cleaning agent comprises the following components in parts by weight: 4.5-18 parts of an organic solvent; 5-30 parts of a complexing agent; 7-20 parts of an oxidizing agent; 3-15 parts of a corrosion inhibitor; the pH is regulated to 11 to 14 by a pH regulator, and 20 to 80 parts of water. The stubborn gunpowder residue strong alkali cleaning agent is compounded by an organic solvent, a complexing agent, an oxidizing agent, a corrosion inhibitor and water in proportion, all the components are stable, compatible and synergistic in a strong alkali environment, stubborn gunpowder residues can be well removed at the working temperature of 10-40 DEG C, and the removal rate is larger than or equal to 95%.

The invention discloses firework powder mixing and filling equipment, and belongs to the technical field of firework processing equipment.The firework powder mixing and filling equipment comprises a rack and a line body used for conveying tool plates, a powder filling platform is arranged on the rack and above the line body, and the powder filling platform comprises a powder sweeping part used for filling the tool plates with powder and a filling part; an explosive filling groove is formed in the position, over the tool plate, of the bottom of the explosive loading platform, and a lifting mechanism used for lifting the tool plate to the explosive filling groove is arranged on the portion, under the tool plate on the line body, of the rack; a medicine mixing tank used for mixing and providing medicine materials is communicated with the upper portion of the medicine loading platform, a gear disc driven by rotation of the transmission mechanism is arranged at one end of the medicine mixing tank, and a spiral blade used for mixing the medicine materials and a screen used for filtering the medicine materials are arranged in the medicine mixing tank. According to the automatic quantitative gunpowder sweeping and filling device, automatic quantitative gunpowder sweeping and filling of firework products are achieved, mixing, filling and compacting of gunpowder are completed in a closed environment, and the whole device is safer and more reliable while running efficiently and orderly.

The utility model discloses a novel non-ignition gunpowder head detonating device which comprises a first sleeve, a splicing screw ring is fixedly connected with the edge of the other end of a second sleeve and the edge of the other end of a third sleeve in a protruding mode, outer cushion blocks are installed on the outer walls of the second sleeve, the third sleeve and the first sleeve in a sleeved mode, and an electronic detonator module is installed on the inner wall of the third sleeve. And one end of the electronic detonator module is electrically connected with the energy storage capacitor. According to the novel ignition-free gunpowder head detonating device, ignition can be conducted through the semiconductor bridge, and the novel ignition-free gunpowder head detonating device and a PCB groove are installed in an inserted and welded mode, so that fixing and shock resistance are achieved; heat is better released through front ignition, covering protection can be achieved through a cover block, sleeving protection can be achieved through a first sleeve, a second sleeve and a third sleeve through an outer cushion block, the protection effect is good, the first sleeve, the second sleeve and the third sleeve can be independently disassembled and assembled through a splicing screw groove and a splicing screw ring, disassembly, assembly, maintenance and use are convenient, and the practicability is high. The use is convenient.

The utility model discloses an efficient detonating connecting device for blasting construction, which comprises a base, the upper side of the base is fixedly connected with an exploder, the outer side of the exploder is provided with a cover, the right side of the cover is provided with a round hole I, the right side of the round hole I is fixedly connected with a round pipe, and a fixing structure is arranged between the cover and the base. And a gunpowder lead is arranged in the first round hole and the round pipe, the left end of the gunpowder lead is fixedly connected with an exploder, the right end of the gunpowder lead is fixedly connected with a detonator, the upper side of the cover is fixedly connected with a handle, and the fixing structure comprises a first rotating groove. Compared with the prior art, due to the arrangement of the cover, the first round hole, the round pipe, the fixing structure, the annular groove, the annular block and the partition plate, when the exploder works in the environment with too much sand, the situation that particles such as sand enter the exploder to damage parts is avoided, and the service life of the exploder is prolonged.

The utility model relates to a nail shooting gunpowder granulation technical field especially relates to a kind of special gunpowder granulation device for shooting nail.Its technical scheme includes: support frame and granulator body, the top of support frame is fixedly installed with installation cylinder, the sidewall of installation cylinder is fixedly inserted with feed cover, and the feed cover is connected with the discharge port of granulator body, the inside rotation of installation cylinder is provided with rotating stand assembly, the sidewall of installation cylinder is provided with the drive assembly for driving rotating stand assembly rotation, the inside of drive assembly is clamped with screening assembly, the bottom of installation cylinder is fixedly inserted with discharge cover, and collecting box is placed on the bottom inner wall of support frame, and collecting box is located the directly below of discharge cover.The utility model not only can select the specification of gunpowder particle, avoid the gunpowder particle that does not meet specification is used, but also can let the over-specification particle accumulated to centralized cleaning after shutdown, avoid frequent interruption production.

The invention discloses a muzzle disturbance suppression device of a high-speed rotating tube artillery. The device comprises a stabilizing disc and an expansion sleeve. Through holes with the number corresponding to that of artillery barrels are formed in the stabilizing disc. During assembly, the stable disc is arranged at the opening parts of the multiple gun barrels in a sleeving manner through the through holes of the stable disc, and the disc is fixedly connected with the gun barrels through the expansion sleeves. The stable disc is arranged near the muzzle, the asymmetric gas acting force is generated by reflecting and changing the direction of gunpowder gas jet flow through the stable disc, centrifugal disturbance caused by gun barrel rotation to the projectile is counteracted, and therefore the initial nutation angle of the projectile is reduced, and the flight stability and shooting precision of the projectile after the projectile is ejected out of a bore are improved. The device is simple in structure, convenient to install and capable of effectively improving the shooting performance of the high-speed rotating tube artillery.

The application discloses a metering and filling equipment for firecracker production and relates to the technical field of firecracker production. The metering and filling equipment for firecracker production can increase the flowability of gunpowder powder and avoid blockage to affect quantitative sub-packaging. The metering and filling equipment for firecracker production comprises a rack, a firecracker barrel to be filled with gunpowder is arranged in the rack, the rack is fixedly connected with a supporting plate, the supporting plate is fixedly connected with a discharging frame, the supporting plate is fixedly connected with a cylinder, the telescopic rod end of the cylinder is fixedly connected with a distributing plate, the distributing plate is slidably connected with the discharging frame, and the top of the discharging frame is fixedly connected with a fixed plate. The gunpowder powder is dredged by moving the pushing frame, the flowability of the gunpowder powder is increased, the gunpowder powder continuously enters the storage holes of the distributing plate, the poor flowability of the gunpowder powder caused by blockage can be avoided, the storage barrel of the distributing plate cannot be filled with gunpowder powder, the quantitative distribution of the gunpowder powder by the distributing plate is affected, and thus the quality of the firecracker is affected.

A kind of artillery barrel defect detection robot, including cleaning module, drive module and defect detection module, the drive module is the structure of variable diameter helical drive, its front end is connected the cleaning module, rear end is connected defect detection module, drive module movement brings cleaning module and defect detection module synchronous movement, it can carry out defect detection to the wear degree of artillery barrel internal rifling and barrel straightness, while robot carries cleaning brush, can simultaneously clean artillery barrel internal rifling, remove gunpowder residue, water vapor and other pollutants.

The utility model discloses an inner barrel gunpowder filling device for firework production. The inner barrel gunpowder filling device comprises a fixing bottom plate, a bearing fixing frame fixedly connected to the fixing bottom plate, a filling box body fixedly connected to the bearing fixing frame, a discharging pipe fixedly connected to the filling box body, an electric valve installed on the discharging pipe and a second weight sensor installed on the filling box body. According to the utility model, the second weight sensor is arranged on the filling box body, so that the dosage of gunpowder in the filling box body can be detected, the filling consumption of the gunpowder can be effectively mastered, the gunpowder can be supplemented in time, and the processing efficiency of the inner barrel is kept.

The invention relates to the technical field of conveying mechanisms, in particular to a conveying mechanism of a charging trolley. According to the technical scheme, the device comprises a working plate and further comprises a medicine storage tank, the medicine storage tank is fixedly installed on the working plate, a supporting rod is fixedly installed on the working plate and fixedly connected with the medicine storage tank, a medicine charging opening is formed in the medicine storage tank, and a medicine conveying pipe is fixedly installed at the bottom of the medicine storage tank. A powder injection pipe is fixedly installed at one end of the powder conveying pipe, a powder injection opening is formed in one end of the powder injection pipe, and a dispersing mechanism for scattering powder is arranged in the powder storage tank. According to the invention, full scattering of gunpowder before charging is realized, gunpowder blockage is avoided in the charging process, the charging efficiency is improved, and the applicability of equipment is improved.

The utility model relates to the technical field of firecracker gunpowder, in particular to a firecracker gunpowder filling safety anti-explosion isolation cabin. According to the technical scheme, the firecracker gunpowder filling safe anti-explosion isolation cabin comprises a supporting frame, an isolation cabin body, a control screen, a temperature sensor and the like. The upper portion of the supporting frame is fixedly connected with an isolation cabin, the front portion of the isolation cabin is fixedly connected with a control screen, the top of the isolation cabin is fixedly connected with a temperature sensor, and the temperature sensor is electrically connected with the control screen. Through sliding fit of the hopper and the stand column and elastic supporting of the spring, the automatic buffering and resetting functions in the gunpowder filling process are achieved, the requirements for different filling amounts are effectively met, the adaptability and stability of equipment are improved, through linkage control of the temperature sensor and the refrigeration pipe, the temperature in the isolation cabin is monitored and adjusted in real time, and the safety of gunpowder filling is improved. Gunpowder spontaneous combustion or explosion caused by high temperature is prevented, and the safety is remarkably improved.

The utility model relates to the technical field of firecracker production, in particular to a firecracker gunpowder filling device. The technical problems that according to an existing firecracker gunpowder filling device, the position of a firecracker barrel is not convenient to correct, gunpowder is likely to be scattered out of the firecracker barrel in the gunpowder filling process, quantitative filling of the gunpowder is difficult, and the firecracker gunpowder filling quality is not high are solved. A firecracker gunpowder filling device comprises a support, a placing plate is connected to the support in a sliding mode, a plurality of placing barrels are evenly arranged on the placing plate, four reset springs are connected between the placing plate and the support, two electric push rods are arranged on the support, and a hopper is connected between telescopic rods of the two electric push rods. The firecracker barrel is extruded by the clamping block to correct the position of the firecracker barrel to the position under the conveying column, the gunpowder filling amount is controlled by controlling the opening and closing of the conveying column by the two quantitative rods, and the position of the firecracker barrel can be corrected and gunpowder can be quantitatively filled in this way, so that the firecracker gunpowder filling quality is improved.

The utility model belongs to the technical field of fire-fighting equipment, and discloses an unmanned aerial vehicle-mounted covering type fire-fighting fire extinguishing bomb which comprises a bomb body part, a stabilizing part is installed at one end of the bomb body part, the bomb body part comprises a shell part and a fire extinguishing part, and the fire extinguishing part is installed inside the shell part. The outer peripheral face of the shell part is sunken inwards in an annular array mode to form a plurality of side grooves, external hanging pieces are rotationally connected into the side grooves and comprise rotating plates, the rotating plates are sunken inwards to form cavities, the cavities are filled with second fire extinguishing agent layers, second gunpowder layers are arranged in the second fire extinguishing agent layers, and second leads are connected to one sides of the second gunpowder layers. When the fire extinguishing bomb is thrown above a fire source by the unmanned aerial vehicle, the rotating plate rotates under the action of airflow, so that the rotating plate is unfolded, after the fire extinguishing bomb is thrown into the fire source, the second gunpowder layer is ignited, the second fire extinguishing agent layer is exploded to extinguish fire, the fire extinguishing range of the fire extinguishing bomb is further expanded, and the fire extinguishing effect is improved.

The utility model relates to the technical field of blasting equipment, and discloses a distance-adjustable blast hole interval charging device which comprises a blasting powder pipe and a placing opening which is formed in the surface of the blasting powder pipe and used for placing explosives, and a sleeve is fixed at one end of the blasting powder pipe; an ejector rod is arranged in the sleeve in a limited sliding mode, and scale marks are arranged on the surface of the ejector rod. A driving mechanism for driving the ejector rod to move is mounted on the sleeve; according to the distance-adjustable blast hole interval charging device, the scale marks on the ejector rod are continuously observed, the interval between explosives can be accurately controlled, the accuracy of the interval between the explosives can be accurately controlled by flexibly filling obstacles, the placing positions of the explosives can be determined, and the distance-adjustable blast hole interval charging device has the advantages of being simple in structure, convenient to use and high in practicability. And an expected effect can be generated by explosive explosion, so that a better explosion effect is achieved.

The cutting device (4) is provided with a detection unit (1) and a cutting unit (2). And the cut-off unit (2) is electrically connected with the detection unit (1). The detection unit (1) has a core (10), a coil (11), and a full-wave rectification circuit (12). The core (10) is formed of a magnetic material. The coil (11) is wound around the core (10). The full-wave rectification circuit (12) is electrically connected with the coil (11). The cutting unit (2) has an igniter (21) and an ejection body (22). The igniter (21) comprises gunpowder. And the igniter (21) is electrically connected with the full-wave rectification circuit (12). The igniter (21) is configured so as to be able to ignite the gunpowder by means of power generated by the coil (11). The ejection body (22) moves according to the ignition of the gunpowder.