CN214039726U - Bolt locking overload testing device - Google Patents
Bolt locking overload testing device Download PDFInfo
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- CN214039726U CN214039726U CN202120002907.7U CN202120002907U CN214039726U CN 214039726 U CN214039726 U CN 214039726U CN 202120002907 U CN202120002907 U CN 202120002907U CN 214039726 U CN214039726 U CN 214039726U
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Abstract
The utility model discloses a rifle bolt shutting overload testing arrangement, set up in the rifle internally, the aircraft nose, the barrel cooperation forms rifle bolt blocked mechanical system, including the pressure measurement projectile body, the cushion, the copper post, pressure measurement lance and nut, the pressure measurement projectile body sets up in the nut front end, the pressure measurement projectile body passes through threaded connection fastening with the nut, the inside shoulder hole that is equipped with along the axial of pressure measurement projectile body, the through-hole has been seted up along the axial to the nut inside, the cushion sets up in the path of pressure measurement projectile body shoulder hole, it is spacing through path hole front end face, the pressure measurement lance sets up in the major diameter of pressure measurement projectile body shoulder hole, its rear end extends backward to in the through-hole of nut, the copper post sets up in the well diameter of pressure measurement projectile body shoulder hole, between pressure measurement lance and the cushion, the front end is contradicted with the cushion, the rear end is contradicted with the pressure measurement lance, pressure measurement lance and copper post can be along axial motion in the shoulder hole of pressure measurement projectile body, this testing arrangement can be reliable, The overload acceleration generated when the bolt is locked is accurately measured, and support is provided for matching of the gun and the bullet.
Description
Technical Field
The utility model belongs to the technical field of firearms, a rifle bolt shutting overload test device is related to.
Background
In the design of firearms, there are two situations, namely, when the bolt is not locked, the firing mechanism releases the firing mechanism to fire the primer, and when the bolt is not locked, the firing pin strikes the primer forward by inertia.
In recent years, there is also a case that the fire may be early ignited, that is, in the locking process of the gun-propelled cartridge of the gun machine, after the cartridge is in contact with the barrel chamber of the gun barrel and positioned, the overload acceleration generated by locking of the gun machine exceeds the anti-overload capability of the primer of the cartridge, but at present, the no-gun-locking overload testing device in the industry cannot be designed in a matching way with the related gun and cartridge.
Disclosure of Invention
The utility model aims at solving the above problem, provide a rifle bolt shutting overload test device, simple structure, the overload acceleration that produces when can reliably, the accurate measurement rifle bolt shutting provides data support for firearms, bullet matching.
The utility model discloses the following technical scheme of accessible realizes: a gunlock overload testing device is arranged in a gun barrel, a machine head and the gun barrel are matched to form a gunlock locking mechanism, and the gunlock overload testing device comprises a pressure measuring bullet body, a cushion block, a copper column, a pressure measuring impact rod and a screw cap, the pressure measuring bullet body is arranged at the front end of the nut and is tightly connected with the nut through threads, a stepped hole is axially formed in the pressure measuring bullet body, a through hole is axially formed in the nut, the cushion block is arranged in a small-diameter hole of the stepped hole of the pressure measuring bullet body, the pressure measuring ram is arranged in the large-diameter hole of the pressure measuring elastomer stepped hole through the front end surface limit of the small-diameter hole, the rear end of the copper column extends backwards into the through hole of the nut, the copper column is arranged in the middle diameter hole of the stepped hole of the pressure measuring elastic body and between the pressure measuring ram and the cushion block, the front end of the copper column is abutted against the cushion block, the rear end of the copper column is abutted against the pressure measuring ram, and the pressure measuring ram and the copper column can move axially in the stepped hole of the pressure measuring elastic body.
During testing, a bullet is firstly loaded into a magazine, then a bolt locking overload testing device is loaded into the magazine, after the bullet is fired, a machine head pushes the bolt locking overload testing device to enter a barrel chamber, after the bolt locking overload testing device is in contact positioning with the barrel chamber, a pressure testing bullet stops moving, a pressure testing ram continues to move forwards to compress a copper column, the copper column is compressed to generate compression deformation, a pressure value generated by bolt locking is obtained through the size of the compression deformation, then overload acceleration generated during bolt locking is calculated, and early firing faults caused by the fact that bolt locking overload exceeds the anti-overload capacity of bottom fire of the bullet are avoided.
Preferably, the appearance of the pressure measuring bullet body is similar to that of a bullet, and the rear end of the pressure measuring bullet body is provided with an internal thread connected with a nut.
Preferably, the cushion block is a cylinder, and the height and the outer diameter of the cushion block are smaller than the aperture and the height of the small-diameter hole of the pressure measuring elastic body.
Preferably, the copper post is one end cone one end cylinder structure, and the cone end is contradicted with the cushion, and the cylinder end is contradicted with the pressure measurement ram, the external diameter of copper post is less than the well footpath hole diameter of pressure measurement projectile body, the height of copper post is greater than the well footpath hole height in the pressure measurement projectile body, in the aperture and the major diameter hole were arranged respectively in at both ends after the copper post was installed, still subsidiary manometer on the copper post, correspond the pressure P that reachs the copper post and bear through copper post compression deformation.
Preferably, the pressure measuring impact rod is a stepped shaft, the large end is arranged in the large-diameter hole of the pressure measuring elastic body, and the small end is arranged in the through hole of the screw cap.
Preferably, the nut appearance is similar with the shell case bottom, and the front end is equipped with the external screw thread of being connected with the pressure measurement projectile body, and rear end circumference is equipped with the hook groove for the clamshell hook snatchs.
Compared with the prior art, the utility model discloses there is following beneficial effect:
the utility model discloses a rifle bolt shutting overload test device adopts appearance and bullet appearance similar structure, can be through the rifle bolt shutting during the test with this rifle bolt shutting overload test device propelling movement barrel chamber location, pressure measurement chamber stop motion, and the pressure measurement ram is because inertia continuation motion compression copper post, correspond the pressure value that reachs the copper post and bear through copper post compression deformation, and then the acceleration that the bullet received when the accurate computing rifle bolt shutting transships, for the firearms, the bullet matches provides the data support, the structure principle is simple, think about ingeniously, can avoid the rifle bolt shutting to transship and exceed bullet primer anti-overload capacity and the early fault of starting a fire appears.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in cooperation with the head and barrel during testing;
fig. 2 is a schematic structural diagram of the present invention.
Reference numerals
1 is a machine head, 2 is a gun barrel, 3 is a locking overload testing device, 301 is a pressure measuring projectile body,
302 is a spacer, 303 is a copper column, 304 is a pressure measuring ram, 305 is a nut, 306 is a large-diameter hole, 307 is a medium-diameter hole, 308 is a small-diameter hole, and 309 is a hook groove.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-2, a bolt lock overload testing device is arranged in a gun barrel 2, a machine head and the gun barrel are matched to form a bolt locking mechanism, the bolt lock overload testing device 3 comprises a pressure testing bullet 301, a cushion block 302, a copper column 303, a pressure testing ram 304 and a nut 305, the pressure testing bullet 301 is similar to the shape of a bolt and is arranged at the front end of the nut 305 and is fastened with the nut 302 through threaded connection, a stepped hole is axially arranged in the pressure testing bullet 301, an internal thread connected with the nut 305 is arranged at the rear end of the pressure testing bullet 301,
the shape of the nut 305 is similar to that of the bottom of the cartridge case, a through hole is axially formed in the nut, an external thread connected with the pressure measuring projectile body 301 is arranged at the front end of the nut, and a hook groove 309 is circumferentially formed at the rear end of the nut and used for grabbing by a draw hook;
the cushion block 302 is arranged in the small-diameter hole 308 of the stepped hole of the pressure-measuring projectile body and is limited by the front end face of the small-diameter hole 308, the cushion block 302 is a cylinder, and the height and the outer diameter of the cushion block are both smaller than the aperture and the height of the small-diameter hole 308 of the pressure-measuring projectile body;
the pressure measuring ram 304 is arranged in a large-diameter hole 306 of a stepped hole of the pressure measuring projectile, and the rear end of the pressure measuring ram extends backwards into a through hole of the nut 305;
the copper column 303 is arranged in a middle diameter hole 307 of a stepped hole of the pressure-measuring projectile body, between the pressure-measuring ram 304 and the cushion block 302, the front end of the copper column 303 is abutted against the cushion block 302, and the rear end of the copper column 303 is abutted against the pressure-measuring ram 304;
the pressure measuring ram 304 and the copper column 303 are axially movable in a flexible manner within the stepped bore of the pressure measuring body 301.
When in test, a bullet is firstly loaded into the magazine, then the bolt locking overload test device 3 is loaded into the magazine, after the bullet is fired, the bolt head pushing machine locking overload test device 3 enters the barrel chamber, after the bolt head pushing machine locking overload test device 3 is in contact with the barrel chamber for positioning, the pressure testing bullet 301 stops moving, the pressure testing ram 304 continues moving to compress the copper column 303, the pressure value P is found out through the copper column pressure gauge and the copper column compression deformation, the acceleration borne by the bullet when the bolt is locked and overloaded can be calculated according to the formula alpha ═ PS/Mg, wherein S is the contact surface area of the ram (the diameter of the ram is calculated according to the application in the copper column pressure gauge, and is generally 1cm2) And M is the mass of the pressure measuring impact rod.
The overload testing device for the locking of the gunlock can reliably and accurately measure the overload acceleration generated when the gunlock is locked, provides data support for the matching of firearms and bullets, has simple structure principle and ingenious design, and can avoid the early firing fault caused by the fact that the overload of the locking of the gunlock exceeds the overload resistance of the primer of the bullets through the measured overload acceleration.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a rifle bolt shutting overload test device sets up in the rifle intraductal, and aircraft nose, barrel cooperation form rifle bolt blocked mechanical system, its characterized in that: including pressure measurement projectile body, cushion, copper post, pressure measurement lance and nut, the pressure measurement projectile body sets up in the nut front end, and the pressure measurement projectile body passes through threaded connection fastening with the nut, the inside axial that is equipped with of pressure measurement projectile body is followed to the through-hole, and the nut is inside to have seted up the through-hole along the axial, the cushion sets up in the path of pressure measurement projectile body stepped hole, and is spacing through the preceding terminal surface of path hole, the pressure measurement lance sets up in the big diameter of pressure measurement projectile body stepped hole, and its rear end ranging back is to the through-hole of nut in, the copper post sets up in the well diameter of pressure measurement projectile body stepped hole in, between pressure measurement lance and the cushion, and front end and cushion are contradicted, and the rear end is contradicted with the pressure measurement lance, pressure measurement lance and copper post can be along axial motion in the stepped hole of pressure measurement projectile body.
2. The bolt face lockout overload test device of claim 1, wherein: the appearance of the pressure measuring projectile body is similar to that of a bullet, and the rear end of the pressure measuring projectile body is provided with an internal thread connected with a nut.
3. The bolt face lockout overload test device of claim 1, wherein: the cushion block is a cylinder, and the height and the outer diameter of the cushion block are smaller than the aperture and the height of the small-diameter hole of the pressure measuring elastic body.
4. The bolt face lockout overload test device of claim 1, wherein: the copper column is one end cone one end cylinder structure, and the cone end is contradicted with the cushion, and the cylinder end is contradicted with the pressure measurement ram, the external diameter of copper column is less than the bore diameter in the hole of the pitch diameter of pressure measurement projectile body, the height of copper column is greater than the height in the hole of pitch diameter in the pressure measurement projectile body, in minor diameter hole and the major diameter were arranged respectively in at both ends after the copper column installation, still subsidiary manometer on the copper column, correspond the pressure P that reachs the copper column and bear through copper column compression deformation.
5. The bolt face lockout overload test device of claim 1, wherein: the pressure measuring ram is a stepped shaft, the large end of the pressure measuring ram is arranged in the large-diameter hole of the pressure measuring elastic body, and the small end of the pressure measuring ram is arranged in the through hole of the screw cap.
6. The bolt face lockout overload test device of claim 1, wherein: the nut appearance is similar with the shell case bottom, and the front end is equipped with the external screw thread of being connected with the pressure measurement projectile body, and rear end circumference is equipped with the hook groove for the clamshell hook snatchs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120002907.7U CN214039726U (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120002907.7U CN214039726U (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214039726U true CN214039726U (en) | 2021-08-24 |
Family
ID=77345202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120002907.7U Active CN214039726U (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214039726U (en) |
-
2021
- 2021-01-04 CN CN202120002907.7U patent/CN214039726U/en active Active
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