CN113503780A - Drop type fuze test method - Google Patents
Drop type fuze test method Download PDFInfo
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- CN113503780A CN113503780A CN202110991152.2A CN202110991152A CN113503780A CN 113503780 A CN113503780 A CN 113503780A CN 202110991152 A CN202110991152 A CN 202110991152A CN 113503780 A CN113503780 A CN 113503780A
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- fuse
- hole
- booster
- sleeve
- decomposition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- Fuses (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of fuze laboratory verification methods, in particular to a drop-type fuze test method which mainly comprises the steps of appearance inspection, fuze sealing test, fuze decomposition and inspection and fire transfer effect reliability test.
Description
Technical Field
The invention relates to the technical field of fuze laboratory verification methods, in particular to a drop-type fuze test method.
Background
Fuzes, also known as fuse tubes, are detonating devices mounted on projectiles, bombs, mines, etc. A detonator is a control device that detonates or ignites a top charge of an ammunition under predetermined conditions using target information and environmental information.
The fuze test is required after ammunition is stored for a long time, the fuze test generally comprises appearance detection, fuze sealing detection, fire transfer action reliability detection and decomposition and assembly correctness detection, supporting tools are required in the fuze test, but in the fuze test in the prior art, a standard special fuze test is not matched for use, and a standard test method is not provided, so that the fuze test process is low in efficiency and high in risk.
Disclosure of Invention
The invention aims to provide a falling type fuse test method, which provides a special tool for fuse test work and improves the efficiency and safety of the fuse test work.
In order to solve the technical problem, the drop type fuze test method provided by the invention comprises the following steps:
s1, appearance inspection;
s1.1, checking appearance quality of the fuse box by using a magnifying glass and a fluorescent lamp;
s1.2, opening the fuse box, and checking whether the fuse box is rusted or not;
s1.3, checking whether the fuse mark is complete, clear and correct; checking whether the adjusting bolt is in a factory-set instantaneous position
S1.4, checking whether the outer surface of the fuse is scratched, deformed, damaged or rusted;
s2, appearance inspection result determination:
judging the fuse as being unqualified in the S1 appearance inspection under one of the following conditions;
s2.1, the fuze or the fuze box has no mark, and the mark is incorrect and unclear;
s2.2, the fuse box is damaged and deformed or rusted by three or more levels;
s2.3, the fuse adjusting bolt is not fixed at the instantaneous position when leaving a factory;
s2.4, the outer surfaces of the fuse moisture-proof cap, the upper body, the connector, the lower body, the booster shell and the adjusting bolt are seriously scratched, deformed and damaged or rusted by three or more levels;
s3, testing the sealing property of the fuse:
s3.1, placing the qualified fuse products which are subjected to the steps S1 and S2 into a helium pressing tank, and covering a helium pressing tank cover;
s3.2, sequentially carrying out helium filling, helium soaking and helium discharging on the fuse in the helium pressure tank, and taking out the fuse from the helium pressure tank after the operation is finished;
s3.3, connecting the fuse on a rotary table, starting the rotary table to rotate, and detecting the leakage at the joint of the connecting body and the upper fuse body and the joint of the connecting body and the lower fuse body by using a helium mass spectrometer;
s3.4, carrying out leak detection on the fuse by using a helium mass spectrometer leak detector at the positions of the adjusting bolt and the identification mechanism respectively;
s3.5, carrying out leak detection on the joint of the damp-proof cap and the joint of the lower body of the test article and the booster tube by using a helium mass spectrometer, and rotating the fuse around a shaft during leak detection;
s3.6, when the leakage detection rate is not less than 2.0 multiplied by 10 < -7 > g.m 3/s, the sealing property of the fuse is unqualified; when the leak detection rate is less than 2.0 multiplied by 10 < -7 > g.m 3/s, the sealing property of the fuse is qualified;
s4, fuse decomposition and inspection;
s4.1, decomposing and checking the booster;
s4.1.1, screwing off the booster, taking out the probe, and removing the sealant between the lower body of the detonator and the booster by using a triangular scraper and a copper awl;
s4.1.2, checking whether cracks or collapse exist on the explosive surface of the booster;
s4.2, decomposition and inspection of the detonating tube:
s4.2.1, screwing off the detonating tube by using a screwdriver;
s4.2.2, checking whether the shell of the detonating tube has cracks, deformation or three-level or more than three-level corrosion;
s4.3, decomposing the fuse upper body: separating the fuse upper body from the setter and the fuse lower body;
s4.4, a decomposition check setter:
s4.4.1, unloading the setter from the lower body of the fuse with the setter which completes the step S4.3;
s4.4.2, checking whether the setter is flexibly set in place;
s4.5, decomposing and checking a lower body of the fuse:
s4.5.1, cleaning the sealant at the joint of the pressing screw and the lower body of the fuse, screwing down the pressing screw, and pouring out the safety system from the lower body of the fuse;
s4.5.2, decomposing the rest parts of the lower body of the fuse;
s4.5.3, checking whether the part has cracks, deformation, anti-corrosion layer falling or three-level or more than three-level corrosion and the like;
s4.5.4, checking whether the assembly of the parts is correct or not, and whether the parts are wrongly assembled or not are neglected;
s4.6, decomposing and checking a safety system:
s4.6.1, decomposing a safety system;
s4.6.2, checking whether the part has the defects of cracks, deformation, falling of an anticorrosive coating or three-level or more corrosion and the like, and checking whether the assembly of the part is correct or not, and whether the part is wrongly assembled or not and is neglected; checking whether the detonator reinforced cap has arch or obvious displacement;
s5, decomposition check result evaluation: in step S4, the fuse is determined to be rejected in one of the following cases:
s5.1, the fuse parts and components have the phenomena of wrong assembly, neglected assembly and the like;
s5.2, in the safety system, the centrifugal plate and the balance weight tile on the revolving body are not in the position of a hook and the centrifugal claw is not arranged at the notch of the revolving body;
s5.3, the identification rod below the fuse thread cannot be pressed down, and the fuse is processed according to the release insurance defect;
s5.4, the fuse adjusting bolt and the remote safety relief mechanism are abnormal in action;
s5.4, the part has the defects of cracks, deformation, falling of an anticorrosive coating or corrosion of three or more levels and the like;
s5.6, the detonator is arched or obviously shifts due to the reinforcing cap, and the detonator shell are cracked, deformed or rusted by three or more stages;
s5.7, cracking or caving with the area 5% larger than the original area and the depth 1mm on the charging surface of the booster tube;
s6, testing reliability of a fire transfer effect:
s6.1, taking the qualified fuse which completes the sealing test of the fuse in the step S3, and screwing down the booster according to the step S4.1.1;
s6.2, weighing the mass of the booster tube by using a balance, taking down a booster tube cover and a paper pad, and burning the booster tube to charge; pouring a mixture of epoxy resin and a curing agent according to the mass balance weight of the booster, wherein the mass ratio of the epoxy resin to the curing agent of the epoxy resin is 1:1, curing the mixture of the epoxy resin and the curing agent, filling the booster, covering a paper pad and a booster cover, and manufacturing a false booster;
s6.3, combining the false booster manufactured in the step S6.2 with a fuse;
s6.4, setting the fuse to a long delay position;
s6.5, adjusting the safety system to a safety relief state;
s6.6, manufacturing a cylindrical paper tail, binding and fixing the paper tail on the tail part of the fuse by using an iron wire with the diameter phi 1, connecting a hook on the tail part of the paper tail, and connecting an impact rod and a support at the front end of the upper body of the fuse;
s6.7, downwards arranging an impact rod, and throwing a fuse into an explosion chamber from a crude guide pipe port of the detonating tower;
s6.8, hearing the explosion sound for 1min, entering an explosion chamber, taking out the fuse, and checking the explosion effect of the fuse;
s6.8, if no explosion sound is heard, the fuse is not ignited, the fuse enters an explosion chamber after 5min, a hook tied with a thin rope is hung on a hook at the tail part of the paper tail, the fuse is lightly pulled to a thick guide pipe port of the detonating tower through the thin rope, and the thin line is cut off to be thrown for the second time;
s6.9, carrying out S6.8 operation on the side where the explosion sound is heard by secondary throwing;
s6.10, after secondary throwing, the explosion sound is not heard, and the fuze is removed in an explosion chamber within 5 min;
s6.11, evaluating the reliability test structure of the fire transfer effect: the nonexplosive detonator is unqualified if the nonexplosive detonator is not completely exploded.
Further, the helium pressure of the helium filled in the step S3.2 is 70Kpa +/-10 Kpa; the pressure of helium immersion is 70Kpa + -10 Kpa, and the time of helium immersion is 3min-5 min.
Further, in step s4.1.1, the detonator is disassembled by using the disassembling chuck, the chuck positioning pin and the disassembling chuck, the detonator upper body is loaded into the disassembling chuck downwards, the disassembling chuck and the detonator upper body are fixed by using the chuck positioning pin, the disassembling clamp is connected to the detonator, the disassembling chuck and the disassembling clamp are rotated in the opposite direction, the detonator is screwed off, and the probe is taken out.
Furthermore, the center of the decomposition chuck is provided with an inverted cone hole, the side wall of the inverted cone hole is provided with a threaded hole I, the chuck positioning pin comprises a handle, a connecting sleeve, a positioning pin and a spring, one end of the handle is provided with a threaded hole II, the front end of the connecting sleeve is provided with an external thread I, the center of the connecting sleeve is provided with an inner hole I and a bottom hole along the axial direction, the bottom hole is arranged at the rear end of the inner hole I, the internal diameter of the bottom hole is smaller than the internal diameter of the inner hole I, the positioning pin is provided with a thin shaft section and a thick shaft section, the thick shaft section is arranged at the front end of the thin shaft section, the external diameter of the thick shaft section is larger than the external diameter of the thin shaft section, the rear end of the thin shaft section is provided with an external thread II, the positioning pin is connected to the connecting sleeve, the handle is connected to the rear end of the connecting sleeve, the thin shaft section passes through the bottom hole, the external thread II is connected to the bottom surface of the thick shaft section and the bottom surface of the inner hole I, the spring is connected to the bottom surface of the thick shaft section and the inner hole I, the pin section extends out of the inner hole I, i connection of external screw thread is in screw hole I, the section cartridge of round pin is in the connecting hole of detonator, it is including the uide bushing to decompose the fixture, the screw, decompose anchor clamps and decomposition fixture plate, be equipped with waist type groove on the uide bushing lateral wall, it is including the holder to decompose the fixture, the holder rotates to be connected in the uide bushing, the holder upper end is equipped with the piece, the holder bottom is equipped with the clamp groove, the holder side is equipped with screw hole III, it is including fixture block and lower seat to decompose the fixture plate, the fixture block is connected in the lower seat upper end, the circumference equipartition has I a plurality of lugs of a plurality of lugs I and the explosion propagating pipe on the lower seat outer wall a plurality of recess one-to-ones, I decibel of a plurality of lugs are connected in a plurality of recesses on the explosion propagating pipe, the fixture block is connected in the clamp groove, screw connection is in screw hole III, the screw front end top is in the fixture block side, the screwhead is connected in waist type groove.
Further, when the upper fuse body is disassembled in the step S4.3, the upper fuse body of the fuse in the step S4.2 is moved upward by using a sleeve, a rotation stopping pin i and a disassembly wrench, the lower fuse body is installed in the sleeve, the lower fuse body is fixed to the sleeve by using the rotation stopping pin i, the disassembly wrench is sleeved on the upper fuse body, the upper fuse body is separated from the lower fuse body by rotating the disassembly wrench, and the rotation stopping pin i is detached from the lower fuse body in the sleeve.
Further, the upper end and the lower end of the sleeve are respectively provided with a large-diameter end and a small-diameter end, the side wall of the large-diameter end is provided with two vertical grooves I, the vertical grooves I are symmetrical with the center of the large-diameter end, the side wall of the small-diameter end is provided with two vertical grooves II, the two vertical grooves II are symmetrical with the center of the small-diameter end, the lower fuse body is sleeved in the large-diameter end, the rotation stopping pin I is connected in the vertical grooves I, the front end of the rotation stopping pin I is inserted into a connecting hole of the fuse, the disassembling wrench comprises a center seat I, a handle I and an inner sleeve, the center of the center seat I is provided with an inner hole II and an upper hole, the upper hole is formed in the upper end of the inner hole II, the two handles I are symmetrically arranged on the left side and the right side of the center seat I, the inner sleeve is connected in the inner hole II, the center of the inner hole II is sleeved on the upper fuse body, and the inner hole is larger than the inner hole.
Further, in the step S4.4.1, the setter is disassembled by using the sleeve and the rotation stopping pin ii, the setter at the upper end of the lower body of the fuse completing the step S4.3 is moved upward, the lower body of the fuse is connected in the small diameter end, the rotation stopping pin ii is connected in the vertical groove ii, the front end of the rotation stopping pin ii is inserted in the pin hole of the fuse, and the rotation stopping pin ii fixes the lower body of the fuse and the sleeve, and the setter is detached.
Further, in the step S4.5.1, a pressing screw wrench, a sleeve and a rotation stopping pin II are used for cleaning the sealant at the joint of the pressing screw and the lower body of the fuse, the pressing screw wrench is used for disassembling the screwing-down pressing screw, the rotation stopping pin II is disassembled, the lower body of the fuse is taken down from the sleeve, and the safety system is poured out from the lower body of the fuse.
Further, the screwdrivers include center seat II and handle II, handle II is equipped with two, two II symmetric connections of handle are in two outsides about center seat II, II lower extremes of center seat are equipped with lug II, lug II uses II centers of center seat to have a plurality ofly as the circumference equipartition of axle, a plurality of lugs II and a plurality of recess one-to-one of screwdrivers upper end, a plurality of lugs II are connected respectively in a plurality of recesses of screwdrivers upper end.
Further, the impact rod including thin rod section, thick shaft section and pyramis, thin rod section external diameter is less than thick shaft section external diameter, thin rod section establishes in thick shaft section upper end, the pyramis is established at thick shaft section lower extreme, the support on be equipped with taper hole, centre bore I and centre bore II, the taper hole is established at the support lower extreme, centre bore I is established on the support top, I lower extreme at the centre bore is established to centre bore II, I internal diameter at the centre bore is less than II internal diameters at the centre bore, the taper hole is connected at fuze upper part front end, thin rod section is connected in centre bore I, thick shaft section and pyramis connected in centre bore II.
The invention has the beneficial effects that:
1. a special tool is provided for each step, so that the working efficiency of each step is improved, and the operation difficulty is reduced;
2. the working method is provided for the processes of appearance inspection, fuze sealing test, fuze decomposition and inspection, fire transfer effect reliability test and the like in the fuze test process, and the accuracy, the normalization and the safety of each step are ensured;
3. the method provides a verification standard for appearance inspection, decomposition inspection and fire transfer effect experiments, and is favorable for smooth implementation and analysis and judgment of each step;
4. a false detonation tube is used in a fire transfer effect experiment, so that the explosion power is reduced, and the damage to facilities is prevented; if the explosion is not generated in the experiment, the explosion risk is reduced, and after the fire is transmitted, explosion marks can be left, so that the judgment is convenient;
5. the paper tail 9 is used in the fire transfer effect experiment, so that the fuse has the effect of stabilizing the posture when falling down, the head part is ensured to land, and the hook 10 is convenient to hoist;
6. the impact rod 11 and the support 12 are arranged in the fire transfer effect experiment, because the difference between the laboratory experiment and the actual experiment is small, the landing force of the head of the fuse is small, and the impact rod 11 is arranged to ensure the effect of a head fire cap during the drop experiment, so that the fire transfer is smooth, and the smooth detonation is ensured.
Drawings
FIG. 1 is a schematic diagram of a fuse according to the present invention;
FIG. 2 is a schematic view of the fuse connecting and disassembling chuck, chuck locating pin and disassembling chuck of the present invention;
fig. 3 is a cross-sectional view of an exploded chuck in accordance with the present invention;
FIG. 4 is a cross-sectional view of a chuck locating pin in accordance with the present invention;
fig. 5 is a sectional view of the connecting sleeve of the present invention;
FIG. 6 is a cross-sectional view of a locating pin of the present invention;
FIG. 7 is a schematic view of the disassembled fixture of the present invention;
FIG. 8 is a schematic view of the disassembled clamp plate of the present invention;
FIG. 9 is a schematic view of the fuse connecting sleeve and the disassembly wrench of the present invention;
FIG. 10 is a schematic view of the construction of the sleeve of the present invention;
FIG. 11 is a schematic view of an exploded wrench according to the present invention;
FIG. 12 is a schematic view of the lower body of the fuse of the present invention when connected to a sleeve;
FIG. 13 is a schematic view of the construction of the compression wrench of the present invention;
FIG. 14 is a schematic structural view of a fuse of the present invention during a fire transfer reliability test;
FIG. 15 is a schematic view of the impact bar of the present invention;
fig. 16 is a schematic structural view of the stand of the present invention.
In the figure: 1. disassembling the chuck; 101. an inverted taper hole; 102. a threaded hole I; 2. a chuck positioning pin; 201. a handle; 2011. a threaded hole II; 202. connecting sleeves; 2021. an external thread I; 2022. an inner hole I; 2023. a bottom hole; 203. positioning pins; 2031. a thin shaft section; 2032. an external thread II; 2033. a thick shaft section; 2034. a pin segment; 204. a spring; 3. disassembling the fixture; 301. a guide sleeve; 3011. a waist-shaped groove; 302. a screw; 303. disassembling the clamp; 3031. a holder; 3032. loading blocks; 3033. a clamping groove; 3034. a threaded hole III; 304. disassembling the fixture plate; 3041. a clamping block; 3042. a lower seat; 3043. a bump I; 4. a sleeve; 401. a large diameter end; 402. a vertical groove I; 403. a small diameter end; 404. a vertical groove II; 5. a rotation stopping pin I; 6. disassembling the wrench; 601. a central seat I; 6011. an inner hole II; 6012. an upper hole; 602. a handle I; 603. an inner sleeve; 6031. an inner taper hole; 7. a rotation stopping pin II; 8. pressing a screw wrench; 801. a center seat II; 802. a handle II; 803. a bump II; 9. paper tail; 10. hooking; 11. an impact bar; 1101. a slender rod section; 1102. a thick shaft section; 1103. a pyramid part; 12. a support; 1201. a taper hole; 1202. a central hole I; 1203. and a central hole II.
Detailed Description
As shown in fig. 1, a conventional fuse includes an upper body, a setter, and a lower body, and a press screw, a safety system, a squib, a booster, etc. are connected to the lower body.
The invention discloses a falling type fuse test method, which comprises the following steps:
s1, appearance inspection;
s1.1, checking appearance quality of the fuse box by using a magnifying glass and a fluorescent lamp;
s1.2, opening the fuse box, and checking whether the fuse box is rusted or not;
s1.3, checking whether the fuse mark is complete, clear and correct; checking whether the adjusting bolt is in a factory-set instantaneous position
S1.4, checking whether the outer surface of the fuse is scratched, deformed, damaged or rusted;
s2, appearance inspection result determination:
judging the fuse as being unqualified in the S1 appearance inspection under one of the following conditions;
s2.1, the fuze or the fuze box has no mark, and the mark is incorrect and unclear;
s2.2, the fuse box is damaged and deformed or rusted by three or more levels;
s2.3, the fuse adjusting bolt is not fixed at the instantaneous position when leaving a factory;
s2.4, the outer surfaces of the fuse moisture-proof cap, the upper body, the connector, the lower body, the booster shell and the adjusting bolt are seriously scratched, deformed and damaged or rusted by three or more levels;
s3, testing the sealing property of the fuse:
s3.1, placing the qualified fuse products which are subjected to the steps S1 and S2 into a helium pressing tank, and covering a helium pressing tank cover;
s3.2, sequentially carrying out helium filling, helium soaking and helium discharging on the fuse in the helium pressure tank, and taking out the fuse from the helium pressure tank after the operation is finished; helium pressure is 70Kpa +/-10 Kpa; the helium soaking pressure is 70Kpa +/-10 Kpa, and the helium soaking time is 3min-5 min;
s3.3, connecting the fuse on a rotary table, starting the rotary table to rotate, and detecting the leakage at the joint of the connecting body and the upper fuse body and the joint of the connecting body and the lower fuse body by using a helium mass spectrometer;
s3.4, carrying out leak detection on the fuse by using a helium mass spectrometer leak detector at the positions of the adjusting bolt and the identification mechanism respectively;
s3.5, carrying out leak detection on the joint of the damp-proof cap and the joint of the lower body of the test article and the booster tube by using a helium mass spectrometer, and rotating the fuse around a shaft during leak detection;
s3.6, when the leakage detection rate is not less than 2.0 multiplied by 10 < -7 > g.m 3/s, the sealing property of the fuse is unqualified; when the leak detection rate is less than 2.0 multiplied by 10 < -7 > g.m 3/s, the sealing property of the fuse is qualified;
s4, fuse decomposition and inspection;
s4.1, decomposing and checking the booster;
s4.1.1, screwing off the booster, taking out the probe, and removing the sealant between the lower body of the detonator and the booster by using a triangular scraper and a copper awl; as shown in fig. 2 to 8, in this step, the decomposition chuck 1, the chuck positioning pin 2 and the decomposition chuck 1 are used for decomposing the booster, the upper body of the detonator is loaded into the decomposition chuck 1 downwards, the decomposition chuck 1 and the upper body of the detonator are fixed by the chuck positioning pin 2, the decomposition fixture 3 is connected to the detonator booster, the decomposition chuck 1 and the decomposition fixture 3 are rotated in the opposite direction, the booster is screwed off, and the probe is taken out; the center of the disassembly chuck 1 is provided with an inverted cone hole 101, the side wall of the inverted cone hole 101 is provided with a threaded hole I102, a chuck positioning pin 2 comprises a handle 201, a connecting sleeve 202, a positioning pin 203 and a spring 204, one end of the handle 201 is provided with a threaded hole II 2011, the front end of the connecting sleeve 202 is provided with an external thread I2021, the center of the connecting sleeve 202 is provided with an inner hole I2022 and a bottom hole 2023 along the axial direction, the bottom hole 2023 is arranged at the rear end of the inner hole I2022, the inner diameter of the bottom hole 2023 is smaller than the inner diameter of the inner hole I2022, the positioning pin 203 is provided with a thin shaft section 2031 and a thick shaft section 2033, the thick shaft section 2033 is arranged at the front end of the thin shaft section 2031, the outer diameter of the thick shaft section 2033 is larger than the outer diameter of the thin shaft section 2031, the rear end of the thin shaft section 2031 is provided with an external thread II 2032, the front end of the thick shaft section 2034 is arranged at the front end of the positioning pin 203 is connected with the connecting sleeve 202, the handle 201 is connected at the rear end of the connecting sleeve 202, the thin shaft section 2031, the thin shaft section 2033 passes through the bottom hole 2023, the external thread 2032 is connected in the external thread 2032, the threaded hole 2011II, the thin shaft section 2011 II, the spring 204 is connected between the bottom surface of the thick shaft section 2033 and the bottom surface of the inner hole I2022, the pin section 2034 extends out of the inner hole I2022, the external thread I2021 is connected in the threaded hole I102, the pin section 2034 is inserted in the connecting hole of the fuze, the disassembling fixture 3 comprises a guide sleeve 301, a screw 302, a disassembling fixture 303 and a disassembling fixture plate 304, the side wall of the guide sleeve 301 is provided with a waist-shaped groove 3011, the disassembling fixture 303 comprises a clamp base 3031, the clamp base 3031 is rotatably connected in the guide sleeve 301, the upper end of the clamp base 3031 is provided with an upper block 3032, the bottom end of the clamp base 3031 is provided with a clamp groove 3033, the side surface of the clamp base 3034 is provided with a threaded hole III 3044, the disassembling fixture plate 304 comprises a clamp block 3041 and a lower base 3042, the clamp block 3041 is connected at the upper end of the lower base 3042, the outer wall of the lower base 3042 is circumferentially provided with a plurality of lugs I3043 and a plurality of lugs I3043 which are uniformly distributed in a one-to a plurality of grooves on the detonation tube, the lugs 3043 are connected in one-to a plurality of grooves on the detonation tube, the fixture block 3041 is connected in the clamp groove 3033, the screw 302 is connected in the threaded hole III 3034, the front end of the screw 302 is abutted against the side surface of the fixture block 3041, and the head of the screw 302 is connected in the waist-shaped groove 3011;
s4.1.2, checking whether cracks or collapse exist on the explosive surface of the booster;
s4.2, decomposition and inspection of the detonating tube:
s4.2.1, screwing off the detonating tube by using a screwdriver;
s4.2.2, checking whether the shell of the detonating tube has cracks, deformation or three-level or more than three-level corrosion;
s4.3, decomposing the fuse upper body: separating the fuse upper body from the setter and the fuse lower body; as shown in fig. 9 to 12, in this step, when the fuse upper body is disassembled, the sleeve 4, the rotation stopping pin i 5 and the disassembly wrench 6 are used, the fuse upper body of the fuse which completes the step S4.2 is directed upward, the fuse lower body is installed in the sleeve 4, the fuse lower body is fixed to the sleeve 4 by using the rotation stopping pin i 5, the disassembly wrench 6 is fitted over the fuse upper body, the disassembly wrench 6 is rotated to separate the fuse upper body from the fuse lower body, the rotation stopping pin i 5 is removed, and the fuse lower body is removed from the sleeve 4; the upper end and the lower end of the sleeve 4 are respectively provided with a large-diameter end 401 and a small-diameter end 403, the side wall of the large-diameter end 401 is provided with two vertical grooves I402, the two vertical grooves I402 are centrosymmetric with the large-diameter end 401, the side wall of the small-diameter end 403 is provided with two vertical grooves II 404, the two vertical grooves II 404 are centrosymmetric with the small-diameter end 403, the lower fuse body is sleeved in the large-diameter end 401, the rotation stopping pin I5 is connected in the vertical groove I402, the front end of the rotation stopping pin I5 is inserted in a connecting hole of the fuse, the disassembling wrench 6 comprises a central base I601, a handle I602 and an inner sleeve 603, the center of the central base I601 is provided with an inner hole II 6011 and an upper hole 6012, the upper hole 6012 is arranged at the upper end of the inner hole II 6011, the handle I602 is provided with two handles I602, the two handles I602 are symmetrically arranged at the left side and the right side of the central base I601, the inner sleeve 603 is connected in the inner hole II 6011, the center of the inner hole II 6011 is provided with an inner taper hole 6031 and 6031 is sleeved on the upper fuse body, the inner diameter of the upper hole 6012 is larger than that of the upper end of the inner cone hole 6031;
s4.4, a decomposition check setter:
s4.4.1, unloading the setter from the lower body of the fuse with the setter which completes the step S4.3; as shown in fig. 9 to 12, this step is to disassemble the setter using the sleeve 4 and the anti-rotation pin ii 7, the setter at the upper end of the lower body of the fuse which completes the step S4.3 is made to be upward, the lower body of the fuse is connected in the small diameter end 403, the anti-rotation pin ii 7 is connected in the vertical groove ii 404, the front end of the anti-rotation pin ii 7 is inserted in the pin hole of the fuse, the anti-rotation pin ii 7 fixes the lower body of the fuse and the sleeve 4, the setter is removed,
s4.4.2, checking whether the setter is flexibly set in place;
s4.5, decomposing and checking a lower body of the fuse:
s4.5.1, cleaning the sealant at the joint of the pressing screw and the lower body of the fuse, screwing down the pressing screw, and pouring out the safety system from the lower body of the fuse; cleaning sealant at the joint of the pressing screw and the lower body of the fuse by using a pressing screw wrench 8, a sleeve 4 and a rotation stopping pin II 7, disassembling and screwing down the pressing screw by using the pressing screw wrench 8, disassembling the rotation stopping pin II 7, taking down the lower body of the fuse from the sleeve 4, and pouring out the safety system from the lower body of the fuse, wherein the pressing screw wrench 8 comprises a central seat II 801 and two handles II 802, the two handles II 802 are arranged, the two handles II 802 are symmetrically connected to the left side and the right side of the central seat II 801, a plurality of projections II 803 are arranged at the lower end of the central seat II 801, the projections II 803 are uniformly distributed around the center of the central seat II 801 by taking the center of the central seat II 801 as an axis, the projections II 803 correspond to a plurality of grooves at the upper end of the pressing screw one by one, and the projections II 803 are respectively connected to the grooves at the upper end of the pressing screw;
s4.5.2, decomposing the rest parts of the lower body of the fuse;
s4.5.3, checking whether the part has cracks, deformation, anti-corrosion layer falling or three-level or more than three-level corrosion and the like;
s4.5.4, checking whether the assembly of the parts is correct or not, and whether the parts are wrongly assembled or not are neglected;
s4.6, decomposing and checking a safety system:
s4.6.1, decomposing a safety system;
s4.6.2, checking whether the part has the defects of cracks, deformation, falling of an anticorrosive coating or three-level or more corrosion and the like, and checking whether the assembly of the part is correct or not, and whether the part is wrongly assembled or not and is neglected; checking whether the detonator reinforced cap has arch or obvious displacement;
s5, decomposition check result evaluation: in step S4, the fuse is determined to be rejected in one of the following cases:
s5.1, the fuse parts and components have the phenomena of wrong assembly, neglected assembly and the like;
s5.2, in the safety system, the centrifugal plate and the balance weight tile on the revolving body are not in the position of a hook and the centrifugal claw is not arranged at the notch of the revolving body;
s5.3, the identification rod below the fuse thread cannot be pressed down, and the fuse is processed according to the release insurance defect;
s5.4, the fuse adjusting bolt and the remote safety relief mechanism are abnormal in action;
s5.4, the part has the defects of cracks, deformation, falling of an anticorrosive coating or corrosion of three or more levels and the like;
s5.6, the detonator is arched or obviously shifts due to the reinforcing cap, and the detonator shell are cracked, deformed or rusted by three or more stages;
s5.7, cracking or caving with the area 5% larger than the original area and the depth 1mm on the charging surface of the booster tube;
s6, testing reliability of a fire transfer effect:
s6.1, taking the qualified fuse which completes the sealing test of the fuse in the step S3, and screwing down the booster according to the step S4.1.1;
s6.2, weighing the mass of the booster tube by using a balance, taking down a booster tube cover and a paper pad, and burning the booster tube to charge; pouring a mixture of epoxy resin and a curing agent according to the mass balance weight of the booster, wherein the mass ratio of the epoxy resin to the curing agent of the epoxy resin is 1:1, curing the mixture of the epoxy resin and the curing agent, filling the booster, covering a paper pad and a booster cover, and manufacturing a false booster;
s6.3, combining the false booster manufactured in the step S6.2 with a fuse;
s6.4, setting the fuse to a long delay position;
s6.5, adjusting the safety system to a safety relief state;
s6.6, as shown in the figures 14-16, manufacturing a cylindrical paper tail 9, binding and fixing the paper tail 9 at the tail part of the fuse by using an iron wire with the diameter phi 1, connecting a hook 10 at the tail part of the paper tail 9, and connecting an impact rod 11 and a support 12 at the front end of the upper body of the fuse; the impact rod 11 comprises a thin rod section 1101, a thick shaft section 1102 and a conical part 1103, wherein the outer diameter of the thin rod section 1101 is smaller than that of the thick shaft section 1102, the thin rod section 1101 is arranged at the upper end of the thick shaft section 1102, the conical part 1103 is arranged at the lower end of the thick shaft section 1102, the support 12 is provided with a conical hole 1201, a central hole I1202 and a central hole II 1203, the conical hole 1201 is arranged at the lower end of the support 12, the central hole I1202 is arranged at the top end of the support 12, the central hole II 1203 is arranged at the lower end of the central hole I1202, the inner diameter of the central hole I1202 is smaller than that of the central hole II 1203, the conical hole 1201 is connected to the front end of the fuse upper body, the thin rod section 1101 is connected into the central hole I1202, and the thick shaft section 1102 and the conical part 1103 are connected into the central hole II 1203;
s6.7, putting the detonator into an explosion chamber from a crude guide pipe port of the detonating tower with the impact rod 11 downward;
s6.8, hearing the explosion sound for 1min, entering an explosion chamber, taking out the fuse, and checking the explosion effect of the fuse;
s6.8, if no explosion sound is heard, the fuse is not ignited, the fuse enters an explosion chamber after 5min, a hook tied with a thin rope is hung on a hook 10 at the tail part of a paper tail 9, the fuse is lightly pulled to a thick guide pipe port of the detonating tower through the thin rope, and a thin line is cut off to be thrown for the second time;
s6.9, carrying out S6.8 operation on the side where the explosion sound is heard by secondary throwing;
s6.10, after secondary throwing, the explosion sound is not heard, and the fuze is removed in an explosion chamber within 5 min;
s6.11, evaluating the reliability test structure of the fire transfer effect: the nonexplosive detonator is unqualified if the nonexplosive detonator is not completely exploded.
The main purpose of the appearance inspection of the step S1 is to inspect the package and the appearance quality of the fuse by visual inspection, and provide a reference basis for the quality evaluation of the fuse.
The main purpose of the fuse leak tightness test in the step S3 is to check the fuse leak tightness by using a method for measuring the helium leak rate of the fuse after being immersed in helium under a specified pressure condition, so as to provide a basis for evaluating the fuse quality.
The main purpose of the fuse disassembly and inspection in step S4 is to disassemble the parts and components of the fuse, inspect the appearance quality and the assembly accuracy, and perform the fuse disassembly in cooperation with the fuse disassembly equipment of the prior art in addition to the method described in step S4.
The main purpose of the fire transfer action reliability test in the step S6 is to adopt a throwing method to fire through inertia and assess the long-delay fire transfer action reliability of the fuse.
It should be noted that the method of the present invention requires that the test be performed in the order of appearance inspection, fuze sealing test, and ignition reliability test according to the lowest sample volume n specified in the general ammunition general test code, and the minimum backup number of the remaining samples are subjected to the disassembly and assembly correctness inspection.
The main purpose of making the false detonating tube is to prevent the explosion power from being too large and damaging facilities after the fire is propagated, reduce the risk of explosion in case of no explosion, balance the weight, leave the explosion mark after the fire is propagated, and facilitate the judgment.
The paper tail 9 has the functions of stabilizing the posture when falling down and ensuring the head to land and the hook 10 is convenient for hoisting.
The impact rod 11 and the support 12 ensure the action of the head fire cap during the drop test so as to smoothly transfer fire. Because the difference between the laboratory test and the actual test is that the landing force of the head is small, and the smooth detonation is ensured, the test is carried out by the aid of the impact rod 11.
The invention provides a special tool and a working method for the drop type fuse test, effectively improves the accuracy, the standardability and the safety of the processes of appearance inspection, the fuse sealing test, the fuse decomposition and inspection, the fire transfer effect reliability test and the like in the fuse test process, simultaneously effectively improves the working efficiency and has high popularization value.
Claims (10)
1. A falling type fuze test method is characterized in that: the method comprises the following steps:
s1, appearance inspection;
s1.1, checking appearance quality of the fuse box by using a magnifying glass and a fluorescent lamp;
s1.2, opening the fuse box, and checking whether the fuse box is rusted or not;
s1.3, checking whether the fuse mark is complete, clear and correct; checking whether the adjusting bolt is in a factory-set instantaneous position
S1.4, checking whether the outer surface of the fuse is scratched, deformed, damaged or rusted;
s2, appearance inspection result determination:
judging the fuse as being unqualified in the S1 appearance inspection under one of the following conditions;
s2.1, the fuze or the fuze box has no mark, and the mark is incorrect and unclear;
s2.2, the fuse box is damaged and deformed or rusted by three or more levels;
s2.3, the fuse adjusting bolt is not fixed at the instantaneous position when leaving a factory;
s2.4, the outer surfaces of the fuse moisture-proof cap, the upper body, the connector, the lower body, the booster shell and the adjusting bolt are seriously scratched, deformed and damaged or rusted by three or more levels;
s3, testing the sealing property of the fuse:
s3.1, placing the qualified fuse products which are subjected to the steps S1 and S2 into a helium pressing tank, and covering a helium pressing tank cover;
s3.2, sequentially carrying out helium filling, helium soaking and helium discharging on the fuse in the helium pressure tank, and taking out the fuse from the helium pressure tank after the operation is finished;
s3.3, connecting the fuse on a rotary table, starting the rotary table to rotate, and detecting the leakage at the joint of the connecting body and the upper fuse body and the joint of the connecting body and the lower fuse body by using a helium mass spectrometer;
s3.4, carrying out leak detection on the fuse by using a helium mass spectrometer leak detector at the positions of the adjusting bolt and the identification mechanism respectively;
s3.5, carrying out leak detection on the joint of the damp-proof cap and the joint of the lower body of the test article and the booster tube by using a helium mass spectrometer, and rotating the fuse around a shaft during leak detection;
s3.6. leak detection rate ≧ 2.0 × 10-7g·m3When the pressure is in the second range, the sealing property of the fuse is unqualified; leak detection rate less than 2.0X 10-7g·m3When the pressure is in the second range, the sealing property of the fuse is qualified;
s4, fuse decomposition and inspection;
s4.1, decomposing and checking the booster;
s4.1.1, screwing off the booster, taking out the probe, and removing the sealant between the lower body of the detonator and the booster by using a triangular scraper and a copper awl;
s4.1.2, checking whether cracks or collapse exist on the explosive surface of the booster;
s4.2, decomposition and inspection of the detonating tube:
s4.2.1, screwing off the detonating tube by using a screwdriver;
s4.2.2, checking whether the shell of the detonating tube has cracks, deformation or three-level or more than three-level corrosion;
s4.3, decomposing the fuse upper body: separating the fuse upper body from the setter and the fuse lower body;
s4.4, a decomposition check setter:
s4.4.1, unloading the setter from the lower body of the fuse with the setter which completes the step S4.3;
s4.4.2, checking whether the setter is flexibly set in place;
s4.5, decomposing and checking a lower body of the fuse:
s4.5.1, cleaning the sealant at the joint of the pressing screw and the lower body of the fuse, screwing down the pressing screw, and pouring out the safety system from the lower body of the fuse;
s4.5.2, decomposing the rest parts of the lower body of the fuse;
s4.5.3, checking whether the part has cracks, deformation, anti-corrosion layer falling or three-level or more than three-level corrosion and the like;
s4.5.4, checking whether the assembly of the parts is correct or not, and whether the parts are wrongly assembled or not are neglected;
s4.6, decomposing and checking a safety system:
s4.6.1, decomposing a safety system;
s4.6.2, checking whether the part has the defects of cracks, deformation, falling of an anticorrosive coating or three-level or more corrosion and the like, and checking whether the assembly of the part is correct or not, and whether the part is wrongly assembled or not and is neglected; checking whether the detonator reinforced cap has arch or obvious displacement;
s5, decomposition check result evaluation: in step S4, the fuse is determined to be rejected in one of the following cases:
s5.1, the fuse parts and components have the phenomena of wrong assembly, neglected assembly and the like;
s5.2, in the safety system, the centrifugal plate and the balance weight tile on the revolving body are not in the position of a hook and the centrifugal claw is not arranged at the notch of the revolving body;
s5.3, the identification rod below the fuse thread cannot be pressed down, and the fuse is processed according to the release insurance defect;
s5.4, the fuse adjusting bolt and the remote safety relief mechanism are abnormal in action;
s5.4, the part has the defects of cracks, deformation, falling of an anticorrosive coating or corrosion of three or more levels and the like;
s5.6, the detonator is arched or obviously shifts due to the reinforcing cap, and the detonator shell are cracked, deformed or rusted by three or more stages;
s5.7, cracking or caving with the area 5% larger than the original area and the depth 1mm on the charging surface of the booster tube;
s6, testing reliability of a fire transfer effect:
s6.1, taking the qualified fuse which completes the sealing test of the fuse in the step S3, and screwing down the booster according to the step S4.1.1;
s6.2, weighing the mass of the booster tube by using a balance, taking down a booster tube cover and a paper pad, and burning the booster tube to charge; pouring a mixture of epoxy resin and a curing agent according to the mass balance weight of the booster, wherein the mass ratio of the epoxy resin to the curing agent of the epoxy resin is 1:1, curing the mixture of the epoxy resin and the curing agent, filling the booster, covering a paper pad and a booster cover, and manufacturing a false booster;
s6.3, combining the false booster manufactured in the step S6.2 with a fuse;
s6.4, setting the fuse to a long delay position;
s6.5, adjusting the safety system to a safety relief state;
s6.6, manufacturing a cylindrical paper tail (9), bundling and fixing the paper tail (9) at the tail part of the fuse by using an iron wire with the diameter phi 1, connecting a hook (10) at the tail part of the paper tail (9), and connecting an impact rod (11) and a support (12) at the front end of the upper body of the fuse;
s6.7, downwards arranging an impact rod (11) and putting a fuse into an explosion chamber from a crude guide pipe port of the detonating tower;
s6.8, hearing the explosion sound for 1min, entering an explosion chamber, taking out the fuse, and checking the explosion effect of the fuse;
s6.8, if no explosion sound is heard, the fuse is not ignited, the fuse enters an explosion chamber after 5min, a hook tied with a thin rope is hung on a hook (10) at the tail part of a paper tail (9), the fuse is lightly pulled to a thick guide pipe opening of the detonating tower through the thin rope, and the thin line is cut off to be thrown for the second time;
s6.9, carrying out S6.8 operation on the side where the explosion sound is heard by secondary throwing;
s6.10, after secondary throwing, the explosion sound is not heard, and the fuze is removed in an explosion chamber within 5 min;
s6.11, evaluating the reliability test structure of the fire transfer effect: the nonexplosive detonator is unqualified if the nonexplosive detonator is not completely exploded.
2. A drop fuse test method as claimed in claim 1, wherein: the helium pressure of helium filled in the step S3.2 is 70Kpa +/-10 Kpa; the pressure of helium immersion is 70Kpa + -10 Kpa, and the time of helium immersion is 3min-5 min.
3. A drop fuse test method as claimed in claim 2, wherein: in the step S4.1.1, the decomposition chuck (1), the chuck positioning pin (2) and the decomposition chuck (1) are used for decomposing the detonating tube, the upper body of the fuse is downwards arranged in the decomposition chuck (1), the decomposition chuck (1) and the upper body of the fuse are fixed by the chuck positioning pin (2), the decomposition chuck (3) is connected to the detonating tube, the decomposition chuck (1) and the decomposition chuck (3) are rotated in opposite directions, the detonating tube is screwed off, and the probe is taken out.
4. A drop fuse test method as claimed in claim 3, wherein: the center of the disassembly chuck (1) is provided with an inverted taper hole (101), the side wall of the inverted taper hole (101) is provided with a threaded hole I (102), the chuck positioning pin (2) comprises a handle (201), a connecting sleeve (202), a positioning pin (203) and a spring (204), one end of the handle (201) is provided with a threaded hole II (2011), the front end of the connecting sleeve (202) is provided with an external thread I (2021), the center of the connecting sleeve (202) is provided with an inner hole I (2022) and a bottom hole (2023) along the axial direction, the bottom hole (2023) is arranged at the rear end of the inner hole I (2022), the inner diameter of the bottom hole (2023) is smaller than the inner diameter of the inner hole I (2022), the positioning pin (203) is provided with a thin shaft section (2031) and a thick shaft section (2033), the thick shaft section (2033) is arranged at the front end of the thin shaft section (2031), the outer diameter of the thick shaft section (2033) is larger than the outer diameter of the thin shaft section (2031), the rear end of the thin shaft section (2031) is provided with an external thread (2032), the thick shaft section II (2034), the positioning pin (203) is connected with the connecting sleeve (202), the inner side is provided with the handle (201) connected with the rear end of the connecting sleeve (202), the thin shaft section (2031) penetrates through the bottom hole (2023), the external thread II (2032) is connected with the threaded hole II (2011), the spring (204) is sleeved on the thin shaft section (2031), the spring (204) is connected between the bottom surface of the thick shaft section (2033) and the bottom surface of the inner hole I (2022), the pin section (2034) extends out of the inner hole I (2022), the external thread I (2021) is connected with the threaded hole I (102), the pin section (2034) is inserted in the connecting hole of the fuse, the decomposition clamp (3) comprises a guide sleeve (301), a screw (302), a decomposition clamp (303) and a decomposition clamp plate (304), the side wall of the guide sleeve (301) is provided with a waist-shaped groove (3011), the decomposition clamp (303) comprises a clamp seat (3031), the clamp seat (3031) is rotatably connected with the guide sleeve (301), the upper end of the clamp seat (3032), the bottom end of the clamp seat (3031) is provided with a clamp groove (3033), the side face of the clamp seat (3031) is provided with a threaded hole III (3034), the decomposed clamp plate (304) comprises a clamp block (3041) and a lower seat (3042), the clamp block (3041) is connected to the upper end of the lower seat (3042), a plurality of lugs I (3043) and a plurality of grooves on the detonating tube are uniformly distributed on the outer wall of the lower seat (3042), the lugs I (3043) and the grooves are in one-to-one correspondence, the lugs I (3043) are connected to the detonating tube in decibels, the clamp block (3041) is connected to the clamp groove (3033), the screw (302) is connected to the threaded hole III (3034), the front end of the screw (302) is abutted to the side face of the clamp block (3041), and the head of the screw (302) is connected to the waist-shaped groove (3011).
5. A drop fuse test method as claimed in claim 4, wherein: when the upper fuse body is disassembled in the step S4.3, the sleeve (4), the rotation stopping pin I (5) and the disassembling wrench (6) are used, the upper fuse body of the fuse completing the step S4.2 is upwards arranged, the lower fuse body is arranged in the sleeve (4), the lower fuse body is fixed with the sleeve (4) by using the rotation stopping pin I (5), the disassembling wrench (6) is sleeved on the upper fuse body, the upper fuse body is separated from the lower fuse body by rotating the disassembling wrench (6), the rotation stopping pin I (5) is disassembled, and the lower fuse body is arranged in the sleeve (4).
6. A drop fuse test method as claimed in claim 5, wherein: the upper end and the lower end of the sleeve (4) are respectively provided with a large-diameter end (401) and a small-diameter end (403), the side wall of the large-diameter end (401) is provided with two vertical grooves I (402), the two vertical grooves I (402) are centrosymmetric with the large-diameter end (401), the side wall of the small-diameter end (403) is provided with two vertical grooves II (404), the two vertical grooves II (404) are centrosymmetric with the small-diameter end (403), the lower body of the fuze is sleeved in the large-diameter end (401), the stop pin I (5) is connected in the vertical groove I (402), the front end of the stop pin I (5) is inserted in a connecting hole of the fuze, the decomposition wrench (6) comprises a center seat I (601), a handle I (602) and an inner sleeve (603), the center of the center seat I (601) is provided with an inner hole II (6011) and an upper hole (6012), the upper hole (6012) is arranged at the upper end of the handle I (6011), the handle I (602) is provided with two inner holes, the two handles I (602) are symmetrically arranged on the left side and the right side of the central base I (601), the inner sleeve (603) is connected in the inner hole II (6011), the center of the inner hole II (6011) is provided with an inner taper hole (6031), the inner taper hole (6031) is sleeved on the fuse upper body, and the inner diameter of the upper hole (6012) is larger than the inner diameter of the upper end of the inner taper hole (6031).
7. A drop fuse test method as claimed in claim 6, wherein: in the step S4.4.1, the setter is disassembled by using the sleeve (4) and the rotation stopping pin II (7), the setter at the upper end of the lower body of the fuse, which finishes the step S4.3, is upwards arranged, the lower body of the fuse is connected in the small-diameter end (403), the rotation stopping pin II (7) is connected in the vertical groove II (404), the front end of the rotation stopping pin II (7) is inserted in the pin hole of the fuse, the rotation stopping pin II (7) fixes the lower body of the fuse and the sleeve (4), and the setter is dismounted.
8. A drop fuse test method as claimed in claim 7, wherein: and in the step S4.5.1, a pressing screw wrench (8), a sleeve (4) and a rotation stopping pin II (7) are used for cleaning the sealant at the joint of the pressing screw and the lower body of the fuse, the pressing screw wrench (8) is used for disassembling and screwing down the pressing screw, the rotation stopping pin II (7) is disassembled, the lower body of the fuse is taken down from the sleeve (4), and the safety system is poured out from the lower body of the fuse.
9. A drop fuse test method as claimed in claim 8, wherein: press spiral shell spanner (8) including center seat II (801) and handle II (802), handle II (802) are equipped with two, two handle II (802) symmetric connection are in two outsides about center seat II (801), center seat II (801) lower extreme is equipped with lug II (803), lug II (803) use center seat II (801) center to have a plurality ofly as the axle circumference equipartition, a plurality of lugs II (803) and a plurality of recesses one-to-one of pressing spiral shell upper end, a plurality of lugs II (803) are connected respectively in a plurality of recesses of pressing spiral shell upper end.
10. A drop fuse test method as claimed in claim 9, wherein: the impact rod (11) comprises a thin rod section (1101), a thick shaft section (1102) and a cone part (1103), wherein the outer diameter of the thin rod section (1101) is smaller than that of the thick shaft section (1102), the thin rod section (1101) is arranged at the upper end of the thick shaft section (1102), the cone part (1103) is arranged at the lower end of the thick shaft section (1102), a conical hole (1201), a center hole I (1202) and a center hole II (1203) are arranged on a support (12), the conical hole (1201) is arranged at the lower end of the support (12), the center hole I (1202) is arranged at the top end of the support (12), the center hole II (1203) is arranged at the lower end of the center hole I (1202), the inner diameter of the center hole I (1202) is smaller than that of the center hole II (1203), the conical hole (1201) is connected to the front end of an upper fuse body, the thin rod section (1101) is connected to the center hole I (1202), and the thick shaft section (1102) and the cone part (1103) are connected to the center hole II (1203).
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| CN114111473A (en) * | 2021-11-22 | 2022-03-01 | 南京理工大学 | Explosion-proof safety test method for preventing conclusion distortion of acupuncture detonator fuse |
| CN115077314A (en) * | 2022-07-27 | 2022-09-20 | 北京理工大学 | Reliable ignition test system and method for small-caliber cannonball fuse |
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| CN115077314B (en) * | 2022-07-27 | 2023-02-24 | 北京理工大学 | Reliable ignition test system and method for small-caliber cannonball fuse |
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