阅读说明：本技术 炮膛维护用喷液装置及维护系统 (Liquid spraying device for maintaining bore and maintenance system ) 是由 杨先道 常超 李兵 于 2020-12-15 设计创作，主要内容包括：本申请涉及一种炮膛维护用喷液装置及维护系统,涉及炮膛维护技术的领域,其包括导流管和延长筒,导流管一端连接有转接头、另一端连接有喷嘴,延长筒一端与转接头连接、另一端与喷嘴连接,延长筒两端均沿设置有与炮膛内径适配的定位环,喷嘴远离延长筒的一端螺纹连接有喷盖和摄像头外壳,摄像头外壳内设有摄像头主体；转接头内置有入液孔和线缆孔,导流管与入液孔连通,喷嘴上开设有与导流管连通的出液孔,喷嘴弧面外周壁开设有若干与出液孔均连通的喷液孔,喷盖与喷头密封连接且喷盖弧面外周壁开设有多个喷液槽；喷嘴上贯穿开设有多个穿线孔。本申请具有能通过摄像头主体实现可视化高质量清洁、维护的效果。(The application relates to a liquid spraying device for maintaining a gun bore and a maintenance system, which relate to the field of gun bore maintenance technology and comprise a flow guide pipe and an extension cylinder, wherein one end of the flow guide pipe is connected with an adapter, the other end of the flow guide pipe is connected with a nozzle, one end of the extension cylinder is connected with the adapter, the other end of the extension cylinder is connected with the nozzle, two ends of the extension cylinder are respectively provided with a positioning ring matched with the inner diameter of the gun bore along the edge, one end of the nozzle, far away from the extension cylinder, is in threaded connection with a spraying cover and; the adapter is internally provided with a liquid inlet hole and a cable hole, the flow guide pipe is communicated with the liquid inlet hole, the nozzle is provided with a liquid outlet hole communicated with the flow guide pipe, the peripheral wall of the cambered surface of the nozzle is provided with a plurality of liquid spraying holes communicated with the liquid outlet holes, the spray cover is hermetically connected with the spray head, and the peripheral wall of the cambered surface of the spray cover is provided with a plurality of liquid spraying grooves; the nozzle is provided with a plurality of threading holes in a penetrating way. The camera has the effect of realizing visual high-quality cleaning and maintenance through the camera main body.)

1. A hydrojet device is used in bore maintenance which characterized in that: the gun bore nozzle comprises a honeycomb duct (1) and an extension tube (2) which are coaxially arranged, wherein one end of the honeycomb duct (1) is detachably and hermetically connected with an adapter (3), the other end of the honeycomb duct is detachably and hermetically connected with a nozzle (4), one end of the extension tube (2) is detachably connected with the adapter (3), the other end of the extension tube is detachably connected with the nozzle (4), two ends of the extension tube (2) are respectively provided with a positioning ring (5) matched with the inner diameter of a gun bore in a protruding mode along the radial direction of the extension tube, one end, far away from the extension tube (2), of the nozzle (4) is in threaded connection with a spray cover (6) and a camera shell (7), and a camera main body (8;

a liquid inlet hole (9) and a cable hole (10) are formed in the adapter (3), the honeycomb duct (1) is communicated with the liquid inlet hole (9), a liquid outlet hole (11) communicated with the honeycomb duct (1) is formed in the nozzle (4), a plurality of liquid spraying holes (12) communicated with the liquid outlet holes (11) are formed in the outer circumferential wall of the arc surface of the nozzle (4), the spraying cover (6) is connected with the nozzle (4) in a sealing mode, and a plurality of liquid spraying grooves (13) are formed in the outer circumferential wall of the arc surface of the spraying cover (6);

a gap for the cable to pass through is reserved between the flow guide pipe (1) and the extension cylinder (2), and a plurality of threading holes (14) are formed in the nozzle (4) in a penetrating mode along the axial direction of the nozzle.

2. The liquid spraying apparatus for bore maintenance according to claim 1, wherein: extension section of thick bamboo (2) both ends all are provided with first heavy platform (15), two holding ring (5) are established respectively two on first heavy platform (15), nozzle (4) and one of them first heavy platform (15) threaded connection, another be provided with oil outlet end cover (16) on first heavy platform (15), adapter (3) butt in oil outlet end cover (16) tip.

3. The liquid spraying apparatus for bore maintenance according to claim 2, wherein: offer on adapter (3) with go into second screw hole (17) of liquid hole (9) intercommunication, honeycomb duct (1) pass through second screw hole (17) with adapter (3) threaded connection, oil outlet end cover (16) are kept away from a plurality of side wire casing (18) that are used for the cable side direction to do not go out are offered to the one end of extension section of thick bamboo (2).

4. The liquid spraying apparatus for bore maintenance according to claim 3, wherein: adapter (3) overcoat is equipped with protecting cover (19), protecting cover (19) tip wear to be equipped with respectively with go into liquid hole (9) with quick-witted joint (20) and plug seat (21) that cable hole (10) are connected, plug seat (21) with camera main part (8) are connected through the camera cable electricity, adapter (3) cambered surface periphery wall run through seted up with cable hole (10) intercommunication and wire casing (22), oil outlet end cover (16) are kept away from the one end of an extension section of thick bamboo (2) is provided with the heavy platform of second (23), protecting cover (19) cover is located the heavy platform of second (23) is gone up.

5. The liquid spraying apparatus for bore maintenance according to claim 1, wherein: a containing groove (24) is coaxially formed in the outer peripheral wall of the cambered surface of the nozzle (4), and the liquid spraying holes (12) are communicated with the containing groove (24); the width of the accommodating groove (24) is larger than the aperture of the liquid spraying hole (12).

6. The liquid spraying apparatus for bore maintenance according to claim 1, wherein: first screw hole (25) have been seted up to nozzle (4) near the one end of extension section of thick bamboo (2), honeycomb duct (1) passes through first screw hole (25) with nozzle (4) threaded connection, first screw hole (25) aperture is greater than go out liquid hole (11) aperture.

7. A bore maintenance system comprising the liquid jet apparatus for bore maintenance according to any one of claims 3 to 6, characterized in that: the quick-screwing-type spray gun is characterized by further comprising a pressurizing spray gun (27) and a mounting seat (28) arranged at the spray head of the pressurizing spray gun (27), a display terminal (29) electrically connected with the plug seat (21) is arranged on one side of the mounting seat (28), and the spray head of the pressurizing spray gun (27) is communicated with the quick-screwing joint (20).

8. A maintenance system for bore maintenance according to claim 7, wherein: a cavity (30) is arranged in the mounting seat (28), a through hole (31) communicated with the cavity (30) is formed in the side wall of the mounting seat (28), the side wall of the mounting seat (28) is mounted in an inner screw cylinder (32) communicated with the through hole (31), the side wall of the mounting seat (28) is provided with a counter bore (33) with the same diameter as the inner screw cylinder (32), the aperture of the counter bore (33) is larger than that of the through hole (31), an outer screw cylinder (34) is connected with the inner screw cylinder (32) in a threaded manner, an installation tube (35) for installing the display terminal (29) is arranged in the outer screw cylinder (34) in a penetrating way, the end part of the mounting pipe (35) is fixedly connected with a mounting ring (36) positioned between the bottom wall of the counter bore (33) and the end wall of the outer screw cylinder (34), and a damping mechanism for realizing damping rotation of the mounting pipe (35) is arranged in the counter bore (33).

9. A maintenance system for bore maintenance according to claim 8, wherein: the damping mechanism includes a spring ring (37) disposed between the mounting ring (36) and the counterbore (33) bottom wall.

10. A maintenance system for bore maintenance according to claim 9, wherein: the mounting seat (28) in spacing groove (38) have been seted up on counter bore (33) pore wall, spacing groove (38) with counter bore (33) coaxial setting, collar (36) cambered surface periphery wall rigid coupling have with spacing piece (39) of spacing groove (38) slip adaptation.

Technical Field

The application relates to the field of bore maintenance technology, in particular to a liquid spraying device and a maintenance system for bore maintenance.

Background

The artillery is before the shooting operation, after the shooting operation and the artillery unseal and seal up and keep all to clean the bore of the artillery and maintain, especially after the shooting operation at every turn, the bore of the gun barrel is adhered with a certain amount of propellant combustion products and shell fragments, if not in time clear up, can influence the technical performance of the artillery to a certain extent, shortens and equips life, can lead to the bore explosion accident even, threatens operating personnel.

At the initial stage of cleaning the bore, the copper removing agent is usually sprayed on the inner wall of the bore, the bore is cleaned and wiped dry, and then protective oil is sprayed, particularly in the cleaning and maintenance processes of the small-bore, because the inner space of the bore is narrow and small, a maintainer cannot directly clean the bore, generally the bore is extended into the bore by means of a filler to perform auxiliary cleaning and maintenance, but in the cleaning and maintenance processes of the bore, the maintainer cannot sense the environment of a deeper bore inner cavity, and the cleaning, maintenance quality and efficiency of the bore are influenced to a certain extent.

Disclosure of Invention

In order to solve the problems of poor cleaning and maintenance quality of small-caliber bores, the application provides a liquid spraying device for bore maintenance and a maintenance system.

In a first aspect, the liquid spraying device for bore maintenance provided by the application adopts the following technical scheme:

a liquid spraying device for maintaining a gun bore comprises a flow guide pipe and an extension cylinder which are coaxially arranged, wherein one end of the flow guide pipe is detachably and hermetically connected with an adapter, the other end of the flow guide pipe is detachably and hermetically connected with a nozzle, one end of the extension cylinder is detachably connected with the adapter, the other end of the extension cylinder is detachably connected with the nozzle, two ends of the extension cylinder are respectively provided with a positioning ring matched with the inner diameter of the gun bore along the radial direction in a protruding mode, one end, far away from the extension cylinder, of the nozzle is in threaded connection with a spraying cover and a camera shell, and a camera main body is;

the adapter is internally provided with a liquid inlet hole and a cable hole, the flow guide pipe is communicated with the liquid inlet hole, the nozzle is provided with a liquid outlet hole communicated with the flow guide pipe, the peripheral wall of the cambered surface of the nozzle is provided with a plurality of liquid spraying holes communicated with the liquid outlet holes, the spray cover is hermetically connected with the spray head, and the peripheral wall of the cambered surface of the spray cover is provided with a plurality of liquid spraying grooves;

a gap for the cable to pass through is reserved between the flow guide pipe and the extension cylinder, and a plurality of threading holes are formed in the nozzle in a penetrating mode along the axial direction of the nozzle.

Through adopting above-mentioned technical scheme, when clearing up or maintaining small-bore, can stretch into the barrel depths with the extension section of thick bamboo earlier, observe barrel inner chamber environment through the image that the camera main part shot, be favorable to maintainer directly perceivedly to know the stained or damaged condition in the barrel to judge best clearance mode or in time acquire bore crackle information. In the process that the extension barrel extends into the gun barrel, the positioning ring positions the extension barrel on one hand, so that the copper removing agent or the protective oil sprayed from the plurality of liquid spraying grooves is sprayed on the inner wall of the gun barrel more uniformly; on the other hand protrusion can prevent effectively that this application from causing the scratch to the bore inner wall stretching into the barrel in-process in the holding ring that the extension section of thick bamboo set up, has improved the security when this application uses.

When cleaning or maintaining, the adapter is communicated with a high-pressure pipeline of a copper removing agent or protective oil, the high-pressure copper removing agent or protective oil flows into the flow guide pipe from the rotary joint and then flows into the nozzle, and is sprayed out from the liquid spray holes to the cavity between the spray cover and the spray head and then sprayed out to the plurality of liquid spray grooves in a foggy manner, so that the inner wall of the bore can be uniformly sprayed, and the cleaning and maintenance quality is higher. And the honeycomb duct both ends can be dismantled with adapter and nozzle respectively and be connected, extension section of thick bamboo both ends can be dismantled with adapter and nozzle respectively and be connected, the camera shell with spout the equal threaded connection of lid on the nozzle, the setting can be dismantled in the camera shell to the camera main part, can realize the nimble dismouting between each part and the convenient processing of each part, machining efficiency is high, take up an area of space after the dismantlement is little, it is also more convenient to transport and load and unload when field usage.

Optionally, extension section of thick bamboo both ends all are provided with first heavy platform, two the holding ring overlaps respectively and is established two on the first heavy platform, the nozzle with one of them first heavy platform threaded connection, another be provided with the end cover that produces oil on the first heavy platform, the adapter butt in the end cover tip that produces oil.

By adopting the technical scheme, the positioning rings are detachably arranged at the two ends of the extension barrel, so that when different small-caliber gun barrels are cleaned and maintained, only the positioning rings of different types are required to be replaced, and the outdoor multi-equipment maintenance is facilitated; simultaneously when this application of equipment, can accomplish the back in the installation of camera main part, with the camera cable share pass a plurality of through wires holes and the clearance between an extension section of thick bamboo and the honeycomb duct, screw an extension section of thick bamboo on the nozzle again, continue to pass the cable hole on the adapter with the camera cable afterwards, and make the adapter butt on an oil outlet end cover, the camera cable takes place the transposition and influences the stability of camera cable and camera main part connecting portion in an extension section of thick bamboo when can effectively avoiding assembling the adapter, the life of this application has been guaranteed as far as possible.

Optionally, a second threaded hole communicated with the liquid inlet hole is formed in the adapter, the honeycomb duct is connected with the adapter in a threaded manner through the second threaded hole, and a plurality of side wire grooves used for cable side direction separation are formed in one end of the extension barrel, which is far away from the oil outlet end cover.

Through adopting above-mentioned technical scheme, when installing the adapter on the extension section of thick bamboo, will be earlier from the camera cable that the extension section of thick bamboo was worn out do not distinguish from same side wire casing, make it not stand out in the end cover head end that produces oil, rotate the adapter immediately and make honeycomb duct and second screw hole threaded connection to support the adapter tightly at the end cover tip that produces oil, can realize the undisturbed installation to the camera cable.

Optionally, the adapter overcoat is equipped with the protecting cover, the protecting cover tip wear to be equipped with respectively with go into the liquid hole with cable jogged joint's quick-twisting joint and connector assembly, the connector assembly with the camera main part passes through the camera cable electricity and is connected, adapter cambered surface periphery wall run through set up with the doubling groove of cable hole intercommunication, the end cover that produces oil is kept away from the one end of an extension section of thick bamboo is provided with the heavy platform of second, the protecting cover is located the heavy bench of second.

By adopting the technical scheme, after the camera cable penetrates out of the extension cylinder and is separated out of the side groove of the oil outlet end cover, the adapter is rotated to enable the adapter to tightly abut against the oil outlet end cover, and meanwhile, the doubling groove on the adapter is communicated with one side groove, and the camera cable can be moved out of the side groove to be electrically connected with the plug seat, so that the problem that the connection stability of the camera main body and the camera cable is influenced due to the fact that the camera cable is twisted along with the rotation of each part in the installation process of the camera main body can be effectively avoided; cover the protecting cover on the adapter later, connect through soon twisting and lock the protecting cover on the adapter, the protecting cover protects the camera cable, promotes the whole harmony of this application.

Optionally, a containing groove is coaxially formed in the peripheral wall of the arc surface of the nozzle, and the plurality of liquid spraying holes are communicated with the containing groove; the width of the accommodating groove is larger than the aperture of the liquid spraying hole.

Through adopting above-mentioned technical scheme, the setting up of storage tank makes the nozzle and spout and form the buffer liquid chamber between the lid, and high-pressure decoppering agent or protective oil spout into this cushion back in the liquid chamber from a plurality of hydrojet holes, and a plurality of hydrojet groove on the rethread spraying lid are with vaporific blowout for decoppering agent or protective oil can be sprayed on the bore inner wall more evenly. The outlet end of the liquid spraying hole sinks to the inner bottom wall of the containing groove, so that the volume of the buffer liquid cavity is large enough, and atomized spray is formed more obviously

Optionally, a first threaded hole is formed in one end, close to the extension cylinder, of the nozzle, the flow guide pipe is in threaded connection with the nozzle through the first threaded hole, and the aperture of the first threaded hole is larger than that of the liquid outlet hole.

Through adopting above-mentioned technical scheme, the honeycomb duct accessible is installed on the nozzle and with go out liquid hole intercommunication with the threaded connection of first screw hole when the installation, and first screw hole aperture is greater than out liquid hole aperture simultaneously, can form the pressure boost of first stage between honeycomb duct and play liquid hole to improve the degree of atomization of hydrojet groove blowout liquid.

In a second aspect, the maintenance system for maintaining a bore provided by the present application adopts the following technical scheme:

the utility model provides a bore is maintained and is used maintenance system, includes that above-mentioned bore is maintained and is used hydrojet device, still includes the pressurization spray gun and installs the mount pad of pressurization spray gun shower nozzle department, mount pad one side install with the display terminal that the plug seat electricity is connected, the shower nozzle of pressurization spray gun with fast screw joint intercommunication.

By adopting the technical scheme, when the bore is cleaned or maintained, the decoppering or the protective oil is injected into the spray can of the pressurizing spray gun, the display terminal is started to supply power to the camera main body, the liquid spraying device for maintaining the bore extends into the barrel, the image which is shot and transmitted back by the camera main body can be observed through the display terminal, the liquid spraying amount of the pressurizing spray gun is controlled, the liquid spraying device for maintaining the bore is slowly drawn out from the barrel, the visual cleaning and maintenance of the bore can be realized, and the cleaning and maintenance quality of the bore is higher.

Optionally, the inside cavity that is equipped with of mount pad, the mount pad lateral wall seted up with the through-hole of cavity intercommunication, the mount pad lateral wall install with the interior barrel of screw of through-hole intercommunication, the mount pad lateral wall seted up with the counter bore that interior barrel equals the footpath, the counter bore aperture is greater than the through-hole aperture, threaded connection has outer barrel on the interior barrel of screw, wear to be equipped with in the outer barrel of screw and be used for the installation display terminal's installation pipe, installation pipe tip rigid coupling has and is located the counter bore diapire with the collar between the outer barrel of screw end wall, be provided with in the counter bore and be used for realizing installation pipe damping pivoted damping mechanism.

By adopting the technical scheme, the plug seat used for being electrically connected with the camera cable is arranged at the opening of the cavity of the mounting seat, the lead wire on the plug seat penetrates into the mounting tube from the through hole to be electrically connected with the display terminal, and the mounting ring can be fixed by screwing the outer screw cylinder so as to prevent the display terminal from driving the mounting tube to freely turn over after being mounted on the mounting tube; after the damping mechanism is arranged, the installation pipe can not rotate freely but can be turned over under the action of certain external force, and the visual angle of the display terminal can be adjusted conveniently.

Optionally, the damping mechanism includes an elastic ring disposed between the mounting ring and the counterbore bottom wall.

Through adopting above-mentioned technical scheme, after screwing outer barrel, outer barrel will install the collar on the pipe and support tightly on the elastic ring, the elastic ring takes place deformation in order to form the damping effect to the installation pipe, and outer barrel is different with the tight degree of supporting that promotes the collar and support tight elastic ring simultaneously, and the damping effect also adjusts thereupon.

Optionally, the mounting base is provided with a limiting groove on the wall of the counter bore, the limiting groove is coaxial with the counter bore, and a limiting sheet in sliding fit with the limiting groove is fixedly connected to the outer peripheral wall of the mounting ring arc surface.

Through adopting above-mentioned technical scheme, when the installation pipe was rotatory in interior spiral shell section of thick bamboo, spacing piece rotated in the spacing groove, and the rotation angle of spacing piece is restricted to the spacing groove, can prevent effectively that the installation pipe from showing terminal excessive upset promptly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when cleaning or maintaining a small-bore, the positioning ring positions the extension barrel on one hand, so that the decoppering or the protective oil sprayed from the plurality of liquid spraying grooves is more uniformly sprayed on the inner wall of the barrel, and the cleaning and maintenance quality is higher; on the other hand, the positioning ring protruding out of the extension barrel can effectively prevent the inner wall of the bore from being scratched in the process of extending into the gun barrel, and the environment of the inner cavity of the gun barrel can be observed through images shot by the camera main body, so that the optimal cleaning mode can be judged or the crack information of the bore can be obtained in time, and the high-quality cleaning and maintenance can be realized;

2. when the adapter is installed on the extension cylinder, the camera cable penetrating out of the extension cylinder is firstly separated from the same side wire groove, so that the camera cable does not protrude out of the head end of the oil outlet end cover, the adapter is immediately rotated to enable the flow guide pipe to be in threaded connection with the second threaded hole, and the adapter is abutted against the end part of the oil outlet end cover, so that the undisturbed installation of the camera cable can be realized;

3. the camera cable is worn out and is do not gone out the back from the side line groove of the end cover that produces oil from extending in the section of thick bamboo, rotary adapter makes the adapter support tight end cover that produces oil, makes doubling groove and one of them side line groove intercommunication on the adapter simultaneously, can shift out the camera cable from the side line groove this moment in order to be connected with the plug seat electricity, thereby can effectively avoid in the camera main part installation, the camera cable takes place to twist reverse and influence the stability of being connected of camera main part and camera cable along the rotation of each part.

Drawings

Fig. 1 is a schematic view of the overall configuration of a liquid jet apparatus for bore maintenance according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a liquid spraying device for maintaining a bore of an embodiment of the present application;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

FIG. 5 is a schematic structural diagram of a mounting base, a display terminal, an inner barrel and an outer barrel according to an embodiment of the present application;

fig. 6 is a schematic sectional view taken along line C-C in fig. 5.

Reference numerals: 1. a flow guide pipe; 2. an extension cylinder; 3. an adapter; 4. a nozzle; 5. a positioning ring; 6. spraying a cover; 7. a camera housing; 8. a camera body; 9. a liquid inlet hole; 10. a cable hole; 11. a liquid outlet hole; 12. a liquid ejection hole; 13. a liquid spraying groove; 14. threading holes; 15. a first sinking platform; 16. an oil outlet end cover; 17. a second threaded hole; 18. a side wire slot; 19. a protective cover; 20. quickly screwing a joint; 21. a plug base; 22. a wire merging groove; 23. a second sinking platform; 24. a containing groove; 25. a first threaded hole; 26. a convex ring; 28. a mounting seat; 29. a display terminal; 30. a cavity; 31. a through hole; 32. an inner screw cylinder; 33. a counter bore; 34. an outer barrel; 35. installing a pipe; 36. a mounting ring; 37. an elastic ring; 38. a limiting groove; 39. a limiting sheet; 40. a first step; 41. a second step; 42. a third step; 43. a lock sleeve; 44. perforating; 45. a first seal ring; 46. a first limit ring; 47. a third sinking platform; 48. a second seal ring; 49. a second limiting block; 50. screwing a cover; 51. and (7) installing a ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses liquid spraying device for maintaining a gun bore. Referring to fig. 1 and 2, the hydrojet device is used in bore maintenance includes honeycomb duct 1 and extension section of thick bamboo 2 of coaxial setting, sealing connection has adapter 3 can be dismantled to honeycomb duct 1 one end, sealing connection has nozzle 4 can be dismantled to the other end, extension section of thick bamboo 2 one end can be dismantled with adapter 3 and be connected, the other end can be dismantled with nozzle 4 and be connected, 2 both ends of extension section of thick bamboo all are provided with the holding ring 5 with bore internal diameter adaptation along its radial protrusion, holding ring 5 is by PTFE, PE, polymer plastics such as PVC make, holding ring 5 is made by PTFE in this implementation.

Referring to fig. 2 and 3, a first step 40, a second step 41 and a third step 42 with gradually reduced outer diameters are sequentially arranged at one end, away from the extension cylinder 2, of the nozzle 4, the first step 40 is in threaded connection with the spray cover 6, the third step 42 is in threaded connection with the camera shell 7, the nozzle 4 is provided with a plurality of threading holes 14 in an axial direction in a penetrating manner, and the four threading holes 14 are distributed in an equally-spaced circumferential array manner along the axial direction of the nozzle 4; removable camera main part 8 that is provided with in camera shell 7, camera main part 8 are pegged graft in camera shell 7, and the one end threaded connection that nozzle 4 was kept away from to camera main part 8 has lock sleeve 43, and lock sleeve 43 locks camera main part 8 in camera shell 7.

Referring to fig. 2 and 3, a through hole 44 adapted to the second step 41 in a sliding manner is formed in one end of the spray cover 6, which is far away from the extension barrel 2, a first sealing ring 45 sleeved at a junction of the second step 41 and the first step 40 is installed on the inner side of the spray cover 6, the first sealing ring 45 is made of fluororubber, the spray cover 6 tightly supports the first sealing ring 45 against the edge of the first step 40 to realize the sealing connection between the spray cover 6 and the nozzle 4, and a threaded rubber or a raw material tape is arranged at the threaded connection between the spray cover 6 and the first step 40, which is preferred in this embodiment. Spout the cambered surface periphery wall integrated into one piece that lid 6 kept away from 2 one ends of extension section of thick bamboo and have bulge loop 26, and bulge loop 26 cambered surface periphery wall is provided with anti-skidding line, and bulge loop 26 external diameter is less than holding ring 5 external diameters.

When the spray cover 6 is installed on the nozzle 4, the first sealing ring 45 is sleeved on the second step 41, the spray cover 6 is screwed to tightly support the first sealing ring 45 at the edge of the first step 40, then the camera main body 8 is inserted into the camera shell 7, and the camera cable on the camera main body 8 is peeled into small strands and respectively passes through the plurality of threading holes 14, the camera main body 8 is then fixed and the camera housing 7 is screwed on the third step 42, then the camera main body 8 is completely arranged in the camera housing 7 and the camera main body 8 is locked in the camera housing 7 through the lock sleeve 43, thereby at this in-process, the camera cable can not take place to twist reverse with camera main part 8, can effectively avoid in the 8 installation of camera main part, the camera cable follows the rotation of each part and takes place to twist reverse and influence the stability of being connected of camera main part 8 and camera cable.

Referring to fig. 2 and 3, a liquid outlet hole 11 communicated with the flow guide pipe 1 is formed in the nozzle 4, a first threaded hole 25 with a diameter larger than that of the liquid outlet hole 11 is formed in one end, close to the extension cylinder 2, of the nozzle 4, the flow guide pipe 1 is in threaded connection with the nozzle 4 through the first threaded hole 25, a first limit ring 46 is fixedly connected to the outer peripheral wall of the end portion of the flow guide pipe 1, a third sinking platform 47 in plug-in fit with the first limit ring 46 is formed in one end, close to the extension cylinder 2, of the nozzle 4, a second sealing ring 48 sleeved on the outer peripheral wall of the flow guide pipe 1 is arranged in the third sinking platform 47.

Referring to fig. 2 and 3, a plurality of liquid spraying holes 12 that all communicate with liquid outlet hole 11 are seted up to nozzle 4 cambered surface periphery wall, liquid spraying hole 12 is provided with a plurality of and a plurality of liquid spraying holes 12 and is equidistant circumference array distribution with nozzle 4 axial, storage tank 24 has been seted up to the 4 cambered surface periphery walls of nozzle are coaxial, a plurality of liquid spraying holes 12 all communicate with storage tank 24, storage tank 24 trough width is greater than liquid spraying hole 12 aperture, spout 6 cambered surface periphery walls of lid and seted up a plurality of liquid spraying groove 13, liquid spraying groove 13 trough width sets up to 0.25 ~ 0.4mm, liquid spraying groove 13 trough width sets up to 0.3mm in this embodiment.

Honeycomb duct 1 is through first screw hole 25 and 4 threaded connection backs of nozzle, first spacing ring 46 supports second sealing washer 48 tightly on third heavy platform 47, honeycomb duct 1 and 4 sealing connection have been realized, thereby after high pressure decoppering or protective oil spout liquid hole 11 in through honeycomb duct 1, spout to storage tank 24 in through a plurality of hydrojet holes 12, and be vaporific blowout through a plurality of hydrojet grooves 13 on the spray cap 6 after the buffering in storage tank 24, can realize the even spraying to the bore inner wall, it is clean and the maintenance quality is higher.

Referring to fig. 2 and 4, two ends of the extension cylinder 2 are respectively provided with a first sinking platform 15, two positioning rings 5 are respectively sleeved on the two first sinking platforms 15, the nozzle 4 is in threaded connection with one of the first sinking platforms 15, the other first sinking platform 15 is in threaded connection with an oil outlet end cover 16, and the adapter 3 abuts against the end part of the oil outlet end cover 16; the inside income liquid hole 9 and the cable hole 10 of having seted up of adapter 3, honeycomb duct 1 with go into liquid hole 9 intercommunication, set up on the adapter 3 with go into the second screw hole 17 of liquid hole 9 intercommunication, honeycomb duct 1 passes through second screw hole 17 and adapter 3 threaded connection, honeycomb duct 1 is provided with thread glue or thread seal area with the spiro union portion of second screw hole 17, preferred thread seal area in this application. The honeycomb duct 1 is close to the one end periphery wall of adapter 3 and still the rigid coupling has second stopper 49, and second stopper 49 cross section sets up the polygon that is convenient for twist to move, and 49 cross sections of second stopper are oval shape in this embodiment, reserve between honeycomb duct 1 and the extension section of thick bamboo 2 to have the space that is used for the cable to pass.

Referring to fig. 2 and 4, one end of the oil outlet end cover 16, which is far away from the extension cylinder 2, is provided with a plurality of side wire grooves 18 for the lateral separation of cables, and in this embodiment, three side wire grooves 18 are provided; 3 overcoats of adapter 19 are equipped with protecting cover 19, the external diameter of sheath and end cover 16 that produces oil equals and all is less than 5 external diameters of holding ring with 2 external diameters of an extension section of thick bamboo, 19 tip of protecting cover are worn to be equipped with respectively and are connected with income liquid hole 9 and cable hole 10 fast screwed joint 20 and plug connector 21, fast screwed joint 20 sets up to the female formula of lock and fast screwed joint 20, plug connector 21 sets up to miniature aviation plug connector 21, plug connector 21 passes through the camera cable electricity with camera main part 8 and is connected, 3 cambered surface periphery walls of adapter run through set up the doubling groove 22 with cable hole 10 intercommunication, the one end that extension section of thick bamboo 2 was kept away from to end cover 16 that produces oil is provided with the heavy platform of second 23, 19 covers of protecting cover are located on.

The positioning rings 5 are detachably arranged at the two ends of the extension barrel 2, so that when different small-caliber gun barrels are cleaned and maintained, only the positioning rings 5 of different models need to be replaced, and more convenience is brought to outdoor multi-equipment maintenance. Meanwhile, when the camera main body 8 is assembled, camera cables can be stranded to pass through a plurality of threading holes 14 and gaps between the extension cylinder 2 and the flow guide pipe 1 after the camera main body 8 is installed, the extension cylinder 2 is screwed on the nozzle 4, then the camera cables penetrating out of the extension cylinder 2 are separated from the same side wire groove 18, so that the camera cables do not protrude out of the head end of the oil outlet end cover 16, the adapter 3 is rotated to enable the flow guide pipe 1 to be in threaded connection with the second threaded hole 17, the adapter 3 is enabled to abut against the oil outlet end cover 16, and the doubling wire groove 22 is aligned with one side wire groove 18; in this in-process, the camera cable that extends from the space between extension section of thick bamboo 2 and the honeycomb duct 1 can remain the original state throughout to can not rotate along with adapter 3 and take place to twist reverse the transposition phenomenon, ensured the stability of camera cable and 8 connecting portions of camera main part, guaranteed the life of this application as far as possible.

The embodiment of the application also discloses a maintenance system for maintaining the bore. Referring to fig. 5 and 6, the liquid spraying device for maintaining the bore further comprises a pressurized spray gun 27 and a mounting seat 28 arranged at a nozzle of the pressurized spray gun 27, a display terminal 29 electrically connected with the plug seat 21 is arranged on one side of the mounting seat 28, and the nozzle of the pressurized spray gun 27 is communicated with the quick-screwing connector 20; a cavity 30 is arranged in the mounting seat 28, a through hole 31 communicated with the cavity 30 is formed in the side wall of the mounting seat 28, an inner screw cylinder 32 communicated with the through hole 31 is arranged on the side wall of the mounting seat 28, and the inner screw cylinder 32 is screwed on the side wall of the mounting seat 28 through a screw; an opening at one end of the mounting seat 28 is in threaded connection with a screw cap 50, a mounting ring 51 is fixedly connected to the peripheral wall of the mounting seat 28 close to one end of the screw cap 50, and a mounting sinking platform matched with the nozzle connecting part of the pressurizing spray gun 27 is arranged on one side of the mounting ring 51 departing from the inner screw cylinder 32.

Referring to fig. 5 and 6, a counter bore 33 with the same diameter as the inner screw cylinder 32 is formed in the outer side wall of the mounting seat 28, the aperture of the counter bore 33 is larger than that of the through hole 31, the inner screw cylinder 32 is connected with an outer screw cylinder 34 in a threaded manner, an anti-slip thread is arranged on the outer circumferential wall of the arc surface at one end of the outer screw cylinder 34 far away from the inner screw cylinder 32, a mounting pipe 35 for mounting the display terminal 29 is arranged in the outer screw cylinder 34 in a penetrating manner, a mounting ring 36 located between the bottom wall of the counter bore 33 and the end wall of the outer screw cylinder 34 is fixedly connected to the end portion of the mounting pipe 35, the mounting ring 36 is in plug-in fit with the inner wall. Damping mechanism is including setting up the elastic ring 37 between mounting ring 36 and counter bore 33 diapire, and elastic ring 37 sets up to the rubber circle, and mount pad 28 has seted up curved spacing groove 38 on counter bore 33 cambered surface pore wall, and spacing groove 38 sets up with counter bore 33 is coaxial, and mounting ring 36 cambered surface periphery wall rigid coupling has the spacing piece 39 with spacing groove 38 sliding fit.

When cleaning or maintaining the bore, a decoppering agent or protective oil is injected into a spraying pot of the pressurizing spray gun 27, the display terminal 29 is started to supply power to the camera main body 8, after the liquid spraying device for maintaining the bore is extended into the bore, the images shot and returned by the camera main body 8 can be observed through the display terminal 29, the liquid spraying amount of the pressurizing spray gun 27 is controlled, the liquid spraying device for maintaining the bore is slowly extracted from the bore, the visual cleaning and maintenance of the bore can be realized, and the cleaning and maintenance quality of the bore is higher.

After the display terminal 29 is installed on the installation tube 35, the outer screw tube 34 is screwed, the outer screw tube 34 tightly presses the installation ring 36 on the installation tube 35 against the elastic ring 37, the elastic ring 37 deforms to form a damping effect on the installation tube 35, meanwhile, the pressing degree of the outer screw tube 34 and the pressing degree of the installation ring 36 tightly pressing the elastic ring 37 are different, the damping effect is adjusted accordingly, and the visual angle of the display terminal 29 is conveniently adjusted. When the mounting tube 35 rotates in the inner screw tube 32, the limiting sheet 39 rotates in the limiting groove 38, the limiting groove 38 limits the rotation angle of the limiting sheet 39, and the mounting tube 35, namely the display terminal 29, can be effectively prevented from being turned over excessively.

The liquid spraying device for maintaining the bore and the maintenance system in the embodiment of the application have the following implementation principles: when clearing up or maintaining small-bore, can stretch into the barrel depths with extension section of thick bamboo 2 earlier, observe barrel inner chamber environment through the image that camera main part 8 shot, spout high-pressure decoppering or protective oil into nozzle 4 through honeycomb duct 1 immediately, and the rethread spouts through a plurality of spray tanks 13 on the spray cover 6 is vaporific, can realize the even spraying to the bore inner wall, and cleanness and maintenance quality are higher.

Meanwhile, when the camera main body 8 is installed, the camera main body 8 is inserted into the camera shell 7, the camera cable is peeled into small strands and respectively penetrates through the plurality of threading holes 14, then the camera shell 7 is screwed on the third step 42, the camera main body 8 is locked in the camera shell 7 through the lock sleeve 43, and the camera cable cannot be twisted along with twisting in the process; after the camera main body 8 is installed, the camera cable is pulled to a gap between the extension cylinder 2 and the flow guide pipe 1 and is separated from the same side wire groove 18 on the oil outlet end cover 16, so that the camera cable does not protrude out of the head end of the oil outlet end cover 16, the adapter 3 is rotated immediately to abut against the oil outlet end cover 16, and the wire merging groove 22 is aligned with one side wire groove 18, in the process, the camera cable extending from the gap between the extension cylinder 2 and the flow guide pipe 1 can be kept in an original shape all the time, the twisting and twisting phenomenon can not occur along with the rotation of the adapter 3, and the stability of the connecting part of the camera cable and the camera main body 8 is ensured.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.