CN112710188A - Bolt locking overload testing device - Google Patents
Bolt locking overload testing device Download PDFInfo
- Publication number
- CN112710188A CN112710188A CN202110001411.2A CN202110001411A CN112710188A CN 112710188 A CN112710188 A CN 112710188A CN 202110001411 A CN202110001411 A CN 202110001411A CN 112710188 A CN112710188 A CN 112710188A
- Authority
- CN
- China
- Prior art keywords
- pressure measuring
- hole
- pressure
- overload
- copper column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A31/00—Testing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a gunlock overload testing device which is arranged in a gun barrel, a machine head and a gun barrel are matched to form a gunlock locking mechanism and comprises a pressure measuring bullet body, a cushion block, a copper column, a pressure measuring ram and a nut, wherein the pressure measuring bullet body is arranged at the front end of the nut, the pressure measuring bullet body is tightly connected with the nut through threads, a stepped hole is axially arranged 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 and limited by the front end surface of the small-diameter hole, the pressure measuring ram is arranged in a large-diameter hole of the stepped hole of the pressure measuring bullet body, the rear end of the pressure measuring ram extends backwards into the through hole of the nut, the copper column is arranged in a middle-diameter hole of the stepped hole of the pressure measuring bullet body and between the pressure measuring ram and the cushion block, the front end of the copper column is abutted against the, 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 invention belongs to the technical field of firearms and relates to a bolt locking overload testing device.
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 invention aims to solve the problems and provides a bolt locking overload testing device which is simple in structure, can reliably and accurately measure the overload acceleration generated when a bolt is locked and provides data support for matching of a gun and a bullet.
The invention can be realized by the following technical scheme: 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 axially move in the stepped hole of the pressure measuring elastic body;
when the bullet is fired, the machine head pushes the locking overload testing device of the gun machine to enter a barrel chamber, the locking overload testing device of the gun machine is in contact positioning with the barrel chamber, the pressure-measuring bullet stops moving, the pressure-measuring impact rod continues to move forwards to compress the copper column, the copper column is compressed to generate compression deformation, the pressure value generated by locking of the gun machine is obtained through the size of the compression deformation, the overload acceleration generated when the gun machine is locked is calculated, and the phenomenon that the overload of the locking of the gun machine exceeds the overload resistance of the bottom fire of the gun bullet to cause early firing faults can be 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.
Preferably, the overload acceleration α generated when the bolt is locked is calculated by the following formula:
α＝PS/Mg
in the formula: p is the pressure value obtained by a pressure gauge after the copper column is compressed and deformed, S is the contact surface area of the impact rod, and M is the mass of the pressure measuring impact rod.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a gunlock overload testing device, which adopts a structure with the appearance similar to that of a bullet, and can push the gunlock overload testing device into a barrel chamber of a gun to be positioned through a gunlock during testing, a pressure measuring chamber stops moving, a pressure measuring ram continuously moves due to inertia to compress a copper column, a pressure value borne by the copper column is obtained through the compression deformation of the copper column, the acceleration borne by the bullet during the overload of the gunlock is further accurately calculated, data support is provided for matching of a firearm and the bullet, the structural principle is simple, the conception is ingenious, and the early firing fault caused by the fact that the overload of the gunlock exceeds the anti-overload capacity of the bottom fire of the bullet can be avoided.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in cooperation with a handpiece and a gun 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 post, 304 is a pressure ram, 305 is a nut, 306 is a large diameter hole,
307 is a middle diameter hole, 308 is a small diameter hole, and 309 is a hook groove.
Detailed Description
Embodiments of the present invention will be described in further detail below 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-mentioned embodiments are only 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 substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (7)
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: the pressure measuring bomb body is arranged at the front end of the nut, the pressure measuring bomb body is tightly connected with the nut through threads, a stepped hole is formed in the pressure measuring bomb body along the axial direction, a through hole is formed in the nut along the axial direction, the cushion block is arranged in a small-diameter hole of the stepped hole of the pressure measuring bomb body and limited through the front end face of the small-diameter hole, the pressure measuring ram is arranged in a large-diameter hole of the stepped hole of the pressure measuring bomb body, the rear end of the pressure measuring ram extends backwards into the through hole of the nut, the copper column is arranged in a middle-diameter hole of the stepped hole of the pressure measuring bomb body, 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;
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.
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.
7. The bolt face lockout overload test device of claim 4, wherein: the overload acceleration alpha generated when the bolt is locked is calculated by the following formula:
α＝PS/Mg
in the formula: p is the pressure value obtained by a pressure gauge after the copper column is compressed and deformed, S is the contact surface area of the impact rod, and M is the mass of the pressure measuring impact rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001411.2A CN112710188A (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001411.2A CN112710188A (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112710188A true CN112710188A (en) | 2021-04-27 |
Family
ID=75548162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110001411.2A Pending CN112710188A (en) | 2021-01-04 | 2021-01-04 | Bolt locking overload testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112710188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916049A (en) * | 2021-10-26 | 2022-01-11 | 中北大学 | Reusable loading type test cartridge for testing firing force of firearms |
-
2021
- 2021-01-04 CN CN202110001411.2A patent/CN112710188A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916049A (en) * | 2021-10-26 | 2022-01-11 | 中北大学 | Reusable loading type test cartridge for testing firing force of firearms |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112498751B (en) | Connection unlocking device | |
| US7165496B2 (en) | Piston head cartridge for a firearm | |
| CN112710188A (en) | Bolt locking overload testing device | |
| CN113567272A (en) | Two-stage supercharging large-caliber air cannon for laboratory | |
| CN110949693A (en) | Pneumatic type connecting and unlocking device | |
| CN214039726U (en) | Bolt locking overload testing device | |
| US3027840A (en) | Dummy ammunition cartridge | |
| CN109556450B (en) | Artillery re-advancing machine liquid amount detection method and device based on detection bomb | |
| CN103868647B (en) | A kind of cannon breech pressure measures the dynamic calibration apparatus of sensor | |
| CN115855701B (en) | Three-level light gas gun loading experiment system based on oxyhydrogen detonation drive | |
| CN116576722A (en) | Gas ejection experimental device | |
| CN108981502B (en) | Simulation test bench for high-speed friction force of inner trajectory | |
| CN110631412B (en) | Automatic piston long-stroke air guide backseat system of medium-large-diameter high-precision automatic rifle | |
| US3056226A (en) | Firing pin of light weight material, such as aluminum or titanium | |
| CN208139939U (en) | Portable pen gun | |
| CN110542347A (en) | Inclined guide rod stressed type shell pumping mechanism for small machine head | |
| CN211317084U (en) | Replacement part structure for shell strength test | |
| CN210533167U (en) | Inclined guide rod stressed type shell pumping mechanism for small machine head | |
| CN112833703A (en) | Multistage buffer structure and large-diameter sniper rifle | |
| CN111288841B (en) | Multifunctional pneumatic device of air-guide type automatic machine | |
| US3611873A (en) | Blowback firearm with retarded extraction | |
| RU114518U1 (en) | BALLISTIC INSTALLATION | |
| CN107702599B (en) | Bullet based on compressed gas as power | |
| CN1954970A (en) | Nailing tool of continuous nailing | |
| CN108534597A (en) | Portable pen gun |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |