CN210603808U

CN210603808U - High overload experimental device based on reverse ballistic impact loading

Info

Publication number: CN210603808U
Application number: CN201921557215.8U
Authority: CN
Inventors: 杨荷; 韩萌萌; 刘波; 吴学星
Original assignee: Institute of Electronic Engineering of CAEP
Current assignee: Institute of Electronic Engineering of CAEP
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-05-22
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a high overload experimental device based on reverse ballistic impact loading, which comprises a movable target body for mounting a sample to be tested, and an acceleration sensor arranged in the movable target body; the accelerating cylinder is provided with an accelerating track arranged along the axial direction of the accelerating cylinder, and the accelerating track is used for placing the movable target body; the projectile loader is positioned at one end of the accelerating cylinder and used for launching projectiles into the accelerating track so as to collide the movable target body and instantaneously accelerate the movable target body to form high overload; and the recovery box is positioned at the other end of the acceleration cylinder and is used for recovering the movable target body. With reverse impact's mode, the sample that awaits measuring forms the high overload in the twinkling of an eye at the collision, and it removes the displacement very little in the twinkling of an eye, is measured by the lead wire in real time more easily, and its signal sampling rate is better, and data memory capacity is bigger, and signal acquisition is abundanter to through abundant buffering speed reduction, improve activity target body and retrieve integrality, be favorable to experimental apparatus's reuse, ensure that the experimentation is high-efficient, accurate economic nature is good.

Description

High overload experimental device based on reverse ballistic impact loading

Technical Field

The utility model relates to an impact loading physical quantity measuring device field, concretely relates to high overload experimental apparatus based on reverse trajectory impact loading.

Background

In the high overload resistance test of electronic systems, inertial components, even protective materials and the like, it is a common technical means to form high overload by the collision of a projectile body loaded with a sample to be tested and a fixed target body launched by an air cannon. However, because the projectile body is always in a high-speed moving state, certain testing limitations exist in such forward impact experiments, for example, online synchronous monitoring of test data cannot be performed, data sampling rate and storage capacity of missile-borne tests are limited, the product is difficult to completely recover after high-speed collision, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a high overload experimental apparatus based on reverse trajectory impact loading to experimental data gathers in real time, shortens experimental period simultaneously, the repetition experiment of being convenient for etc..

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides a high overload experimental apparatus based on contrary ballistic impact loading which key lies in, includes:

the movable target body is used for mounting a sample to be tested, and an acceleration sensor is mounted in the movable target body;

the acceleration cylinder is provided with an acceleration track arranged along the axial direction of the acceleration cylinder, and the acceleration track is used for placing the movable target body;

the projectile loader is positioned at one end of the accelerating cylinder and used for launching projectiles into the accelerating track so as to collide the movable target body and instantaneously accelerate the movable target body to form high overload;

and the recovery box is positioned at the other end of the acceleration cylinder and is used for recovering the movable target body.

By adopting the structure, during the test, a sample to be tested is firstly arranged in the movable target body, then the movable target body is arranged in the accelerating track, the sample related output signal is connected with external equipment by utilizing a lead mode, then the projectile body is placed on the projectile body loader, and the projectile body loader is used for loading kinetic energy to the projectile body, so that the projectile body flies into the accelerating track and collides with the movable target body, thereby realizing impact loading, because the displacement of the movable target body is smaller at the moment of impact loading, the real-time signal acquisition can be realized by the lead, the sampling rate and the storage amount of the signal acquisition can be changed according to requirements, the amplitude and the pulse width of the impact load can be adjusted by changing the speed, the mass and the end shape of the projectile body, an acceleration sensor is arranged on the movable target body, the experiment of high overload measurement can be completed, and the movable target body enters the recycling box after being collided with the accelerating track, through friction deceleration, the movable target body is completely recovered, and the movable target body is convenient to recycle.

Preferably, the method comprises the following steps: the accelerating cylinder is in a hollow cylindrical shape. By adopting the scheme, the sliding fluency of the movable target body and the projectile body in the accelerating track is favorably ensured, the resistance is reduced, and the accuracy of an experimental result is favorably improved.

Preferably, the method comprises the following steps: the experimental device further comprises a base, a track is arranged on the base corresponding to the position of the recycling bin, and the bottom of the recycling bin is provided with a moving part matched with the track. By adopting the scheme, after the movable target body enters the recycling box, the movable target body is exchanged with the recycling box in childhood, the recycling box slides along the track towards the direction away from the accelerating track so as to fully absorb kinetic energy and avoid hard touch with the movable target body, thereby ensuring the complete recycling of the movable target body and a sample, and the reliable recycling of the movable target body with different final speeds can be realized by adjusting the weight of the recycling box.

In order to further shorten the experiment preparation period and realize the rapid alignment of the accelerating track and the recycling box, the accelerating cylinder is fixedly supported on the base through a fixed support.

Preferably, the method comprises the following steps: the side wall of the acceleration cylinder is provided with a window communicated with the acceleration track, and the window penetrates through two ends of the acceleration cylinder. By adopting the scheme, the data lead wire connected with the movable target body can be penetrated out through the window without being led out from the end part of the accelerating track, so that the risk of interference of the lead wire on the experimental result is reduced, and the smooth experiment is ensured.

Preferably, the method comprises the following steps: the recycling bin is open at one end opposite to the accelerating cylinder, and flexible buffer materials are filled in the recycling bin. By adopting the scheme, the movable target body can be prevented from being contacted with the flexible buffer material to generate larger reverse destructive force instantly, and meanwhile, kinetic energy can be better absorbed, so that the movable target body can be stopped within a shorter distance, and the reliability of complete recovery is further improved.

Preferably, the method comprises the following steps: the flexible buffer material is a split felt pad. By adopting the scheme, the split felt pad is easy to obtain and install, the experiment cost is favorably reduced, the preparation period is shortened, and local or whole replacement is convenient in the later period.

Preferably, the method comprises the following steps: the recovery tank has a top cover that is detachably disposed. By adopting the scheme, the flexible buffer component is convenient to mount or replace quickly, and the operability is improved.

Preferably, the method comprises the following steps: the projectile loader is an air cannon. The method is convenient to obtain, so that the experiment cost is further reduced, and meanwhile, the operation is relatively simple, and the experiment period is favorably shortened.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides a high overload experimental apparatus based on reverse trajectory impact loading to the mode of reverse impact, the sample that awaits measuring forms high overload in the twinkling of an eye at the collision, and it removes the displacement very little in the twinkling of an eye, is more easily by lead wire real-time measurement, and its signal sampling rate is better, and data memory space is bigger, and signal acquisition is abundanter, and through abundant buffering speed reduction, improve movable target body and retrieve integrality, be favorable to experimental apparatus's reuse, ensure that the experimentation is high-efficient, accurate economic nature is good.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an isometric view of fig. 1.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Referring to fig. 1 and 2, the experimental apparatus for high overload based on reverse ballistic impact loading mainly includes an acceleration cylinder 1, a movable target 2, a projectile 3, a projectile loader 4 and a recycling bin 5, as shown in the figure, wherein the acceleration cylinder 1 is a hollow cylindrical structure, an acceleration track 10 is provided therein along the length direction thereof, and two ends of the acceleration track 10 are open, in this embodiment, to reduce the resistance of the acceleration track 10, the section of the acceleration track 10 is designed to be circular, the movable target 2 is mainly used for mounting and carrying a sample to be tested, and the size of the movable target is adapted to the acceleration track 10, and if the shape of the sample to be tested is limited, the shape of the corresponding acceleration track 10 is changed accordingly when the movable target 2 is designed to be prismatic, so that the movable target 2 is adapted to the shape of the movable target 2.

The projectile body 3 and the projectile body loader 4 are used in a matched mode, the projectile body loader 4 is mainly used for providing linear impact load for the projectile body 3, in order to reduce cost and operation difficulty, instruments such as an air cannon and the like can be adopted, meanwhile, the shape of the projectile body 3 needs to be matched with the accelerating track 10, and when the projectile body 3 is impacted to a certain degree, the projectile body can smoothly fly into the accelerating track 10 and directionally slide along the accelerating track 10.

As shown in the figure, this application is with higher speed a 1 level setting, and projectile loader 4 and collection box 5 are just to the both ends of rail 10 with higher speed respectively, and wherein projectile loader 4 exerts impact load to projectile 3 and when reaching a definite value, also can make projectile 3 straight line fly into in rail 10 with higher speed certainly to with being in the movable target 2 bump in rail 10 with higher speed, and collection box 5 mainly used retrieves the movable target 2 that receives impact bump, and ensures the integrality of movable target 2 and inside sample.

Therefore this embodiment provides a collection box 5 of cavity box-like structure, collection box 5 is just uncovered to the one end of accelerating track 10, and have the top cap 52 of can dismantling the switching, the cavity inner chamber of collection box 5 is filled with flexible buffer material 51, after the activity target body 2 flies into collection box 5 like this, with flexible buffer material 51 direct contact, can effectively avoid touching the destruction firmly, guarantee the integrality of activity target body 2, from factors such as economic cost or installation preparation are convenient, can select split type felt pad as flexible buffer material 51 in the actual experimentation, the experiment of still being convenient for is ended and is carried out whole or local change like this, shorten experiment preparation cycle.

On the basis, the embodiment also considers that the movable target body 2 is further decelerated by momentum exchange to shorten the stopping distance, so the recycling box 5 is arranged on the base 6, the base 6 is provided with a track 60 arranged along the length direction of the base, the extending direction of the track 60 is parallel to the length direction of the accelerating tube 1, the bottom of the recycling box 5 is provided with a moving part 50 matched with the track 60 in a sliding way, the moving part 50 can adopt a structure such as a slide block or a roller, when the recycling box 5 is impacted greatly, the reduction can be performed by sliding along the rail 60, while the acceleration cartridge 1 is fixedly supported on the base 6 by the fixing mount 11, so that the relative position of the accelerating tube 1 and the recycling box 5 is further fixed, and the relative position of the accelerating tube and the recycling box is prevented from changing in the experimental process, which is not beneficial to subsequent repeated experiments or increases the preparation period of the subsequent experiments and the like.

One of the main purposes of the present application is to directly connect with the movable target body 2 through a lead wire, perform real-time measurement of the relevant physical quantity in the impact loading process, and improve the signal sampling rate and the data storage amount, and if the lead wire penetrates out from the end of the acceleration track 10, it may cause some interference to the impact process, so this embodiment provides a window 12 on the side wall of the acceleration barrel 1, as shown in the figure, the window 12 is disposed along the length direction of the acceleration barrel 1 and is through with the acceleration track 10, and at the same time, both ends of the window also penetrate through both ends of the acceleration barrel 1, i.e. a pull-through opening is formed, during the experiment, the signal lead wire can penetrate out from the window 12 initially.

Referring to fig. 1 and 2, in the experiment, firstly, the acceleration cylinder 1 and the recovery box 5 are installed on the base 6, and the launching port of the projectile loader 4 is ensured to be arranged opposite to the acceleration track 10, then the sample to be tested is loaded into the movable target body 2, an acceleration sensor or other sensors are installed on the movable target body 2 and connected with the lead 7, then the movable target body 2 is loaded into the acceleration track 10, and the lead 7 is connected with the experiment recording terminal after penetrating out of the window 12.

Secondly, put into projectile loader 4 with projectile body 3, through impact loading, make it fly into wherein just to accelerating track 10, accelerating track 10 can play certain direction and right the effect, ensures that projectile body 3 and movable target body 2 take place linear collision, accelerates movable target body 2, and the high overload that transient state acceleration process formed is then through acceleration sensor collection and through lead wire 7 storage at record terminal, and is the same, other physical parameters are also gathered simultaneously and are stored.

After the movable target body 2 finishes accelerating, fly into the collection box 5 after breaking away from the accelerating track 10, contact with flexible buffer material 51, thereby the buffering slows down, carry out the momentum exchange once more simultaneously, make the collection box 5 retreat along track 60 slip, can further shorten movable target body 2 and stop required time and buffer distance, effectively ensure movable target body 2 and retrieve the integrality, utilize later stage repetition experiment, in the experimentation, can be according to different test demands, change the initial velocity of projectile body 3, quality and end shape etc. with the high overload waveform that the regulation test gained, and corresponding total weight of adjustment collection box 5 or flexible buffer material 51's material or distribution mode etc. with the realization is retrieved the reliable complete of different terminal speed movable target bodies 2.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A high overload experimental apparatus based on reverse ballistic impact loading is characterized by comprising:

the movable target body (2) is used for mounting a sample to be tested, and an acceleration sensor is mounted in the movable target body;

the acceleration drum (1) is provided with an acceleration track (10) arranged along the axial direction of the acceleration drum (1), and the acceleration track (10) is used for placing the movable target body (2);

the projectile loader (4) is positioned at one end of the acceleration cylinder (1) and is used for launching projectiles (3) into the acceleration track (10) so as to collide the movable target body (2) and instantaneously accelerate the movable target body to form high overload;

and the recovery box (5) is positioned at the other end of the acceleration cylinder (1) and is used for recovering the movable target body (2).

2. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 1, wherein: the accelerating cylinder (1) is in a hollow cylindrical shape.

3. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 1, wherein: the experimental device further comprises a base (6), a track (60) is arranged on the base (6) corresponding to the position of the recovery box (5), and a moving part (50) matched with the track (60) is arranged at the bottom of the recovery box (5).

4. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 3, wherein: the accelerating cylinder (1) is fixedly supported on the base (6) through a fixed support (11).

5. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 1 or 4, wherein: the side wall of the acceleration cylinder (1) is provided with a window (12) communicated with the acceleration track (10), and the window (12) penetrates through two ends of the acceleration cylinder (1).

6. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 1 or 3, wherein: the recycling box (5) is opposite to one end of the accelerating cylinder (1) and is open, and flexible buffer materials (51) are filled in the recycling box (5).

7. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 6, wherein: the flexible buffer material (51) is a split felt pad.

8. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 6, wherein: the recovery tank (5) has a top cover (52) provided in a detachable manner.

9. The high overload experimental apparatus based on reverse ballistic impact loading according to claim 1, wherein: the projectile loader (4) is an air cannon.