Low-temperature target cabin experimental device capable of being quickly assembled and disassembled

Abstract

The low-temperature target bin experimental device comprises a target box, a target frame, a gun barrel and refrigeration equipment, a rapid connecting device is arranged between the target frame and the target box, the target frame is movably connected in a drawing and inserting mode in the longitudinal direction of the target box through the rapid connecting device, and after the target frame is installed, a closed cavity isolated from the outside is formed in the target box and the target frame; a test sample piece is mounted in the center of the target frame; the center of the gun barrel directly faces the center of the test sample piece; the refrigeration end of the refrigeration equipment is located in the target box; and an observation part is arranged on the target box. The device has the beneficial effects that a sample material can be quickly mounted and dismounted, and the test efficiency is greatly improved while time and labor are saved. The device has a good heat preservation effect, can prevent materials easy to melt from being quickly melted or keep a required temperature environment for materials easy to melt and other metal, nonmetal and composite materials needing a low-temperature experiment, ensures that the experiment effect is ensured, and the experiment result is more real and accurate.

Description

Technical Field

[0001] The invention relates to an experimental device, in particular to a low-temperature target chamber experimental device which can be quickly assembled and unassembled, and belongs to the technical field of penetration ballistic mechanics tests. Background Art

[0002] Ballistic penetration mechanics experiments are an important means of studying armor-piercing mechanics and impact dynamics. Ballistic penetration mechanics experiments are based on the similarity theory in mechanics and the basic principles of impact dynamics. They imitate the prototype test conditions and follow a certain similarity ratio to establish a scaled model test. The main research content of ballistic penetration mechanics is to study the relationship between the projectile incident parameters, medium material parameters and ballistic parameters. The projectile incident parameters include: bullet shape, mass, velocity, angle of attack and inclination; for bulk media, material parameters include: medium internal friction angle, cohesion, density, porosity, etc.; ballistic parameters mainly include: penetration depth, ballistic path, etc.

[0003] The target chamber is an essential experimental device for ballistic penetration experiments. It is an important auxiliary device for studying the penetration effects of various objects (such as projectiles, fragments, etc.) on targets, simulating experimental environments and safety protection. In the military field, the performance and lethality of weapons can be evaluated through target chamber experiments, providing an important basis for weapon design and warhead power optimization.

[0004] In terms of protection engineering, it helps to develop and test new protective materials and structures to improve resistance to penetration. For material science research, target chamber experiments can be used to analyze the mechanical behavior and failure mode of different materials under penetration conditions, promoting material improvement and innovation. In academic research, it can deeply explore the physical mechanism of penetration phenomena and enrich related theories.

[0005] As the research objects continue to diversify, they include not only traditional metal materials, but also various easily meltable substances including ice, as well as various non-metallic and composite materials that require experiments under low temperature conditions.

[0006] However, when conducting penetration tests in existing target chambers, there are problems such as the heavy weight of the fixtures themselves, the complicated and time-consuming and labor-intensive installation and disassembly process, and the difficulty in obtaining stable low-temperature conditions for easily fusible materials and materials that need to be tested under low-temperature conditions. For easily fusible materials or materials that need to be tested under low-temperature conditions, it is crucial to maintain a suitable experimental temperature. However, there are some thorny problems at present. The fixtures in the target chamber cannot be quickly loaded and unloaded, which makes it difficult for easily fusible materials to maintain a low-temperature state for a long time. Those materials that need to be tested under low-temperature conditions cannot maintain a low-temperature state for a long time due to the long loading and unloading time. On the one hand, the loading and unloading time is too long, and easily fusible materials are easily melted in the process; on the other hand, the long loading and unloading time leads to a large heat loss, and it is difficult for low-temperature samples to maintain the required low-temperature conditions. The existence of these problems will undoubtedly have a great impact on the accuracy of the experimental results. Summary of the invention

[0007] Purpose of the invention: In order to solve the above technical problems, the present invention provides a low-temperature target chamber experimental device that can be quickly loaded and unloaded to ensure that easily meltable materials and low-temperature samples can always be in suitable temperature conditions during the experiment, so as to obtain accurate and reliable experimental results.

[0008] Technical solution: A low-temperature target chamber experimental device that can be quickly loaded and unloaded, including a target box, a target stand, a gun barrel and a refrigeration device. A quick connection device is provided between the target stand and the target box. The target stand is movably connected to the target box in a plug-in manner along the longitudinal direction of the target box through the quick connection device. After the target stand is installed, it forms a closed cavity isolated from the outside with the inside of the target box; a test sample is installed at the center of the target stand, and the center of the gun barrel is opposite to the center of the test sample; the refrigeration end of the refrigeration device is located inside the target box, and the refrigeration end is connected to the refrigerator of the refrigeration device by a flexible pipe; an observation part is provided on the target box.

[0009] The target stand and target box of the present invention can realize the rapid withdrawal of the target stand to replace the test sample through a quick connection device, and then quickly seal and install to form an insulated closed cavity. The refrigeration end of the refrigeration equipment controls the temperature inside the target box. The observation part on the target box can be a transparent observation plate or a built-in high-speed camera, which can record the entire test process to ensure that easily meltable substances and low-temperature samples can always be in suitable temperature conditions during the experiment, so as to obtain accurate and reliable experimental results.

[0010] Preferred option. In order to quickly extract the target rack to replace the test sample and then quickly seal and install it to form a heat-insulated closed cavity, the quick connection device includes a limit slide rail and a limit slider. The limit slide rail is arranged above the target box along the longitudinal direction, and the limit slider is arranged inside the target rack along its longitudinal direction. The limit slider is slidably connected along the length direction of the limit slide rail. Through the sliding connection of the limit slide rail and the limit slider, the test sample can be quickly replaced and the target rack can be stably and reliably installed inside the target box.

[0011] Preferred option. In order to further improve the stability and reliability of the connection between the target rack and the target box, the number of the quick connection devices is two groups, which are symmetrically arranged on both sides of the target rack.

[0012] Preferred option. In order to improve the sealing performance of the connection between the target rack and the target box, the limit slide rail is of a dovetail chute structure, and the limit slider is of a dovetail slider structure.

[0013] Preferred option. In order to facilitate the quick insertion of the target rack into the target box, the target rack includes an upper flat plate, a lower flat plate and side plates. The upper flat plate and the lower flat plate are horizontally distributed and are respectively fixedly connected to the side plates at both ends to form a "C" - shaped structure; the upper flat plate is connected to the target box in a plug - and - pull manner along the longitudinal direction of the target box through the quick connection device; when the target rack is inserted into the target box, the lower flat plate is inside the target box, and the side plates are hermetically connected to the target box.

[0014] Preferred option. In order to improve the strength of the target rack, reinforcing angle plates are provided at the joints of the upper flat plate, the lower flat plate and the side plates, which improves the strength of the target rack and ensures the processing accuracy of the target rack at the same time.

[0015] Preferred option. In order to improve the sealing performance when the target rack and the target box are installed, elastic sealing strips are provided on both sides of the side plates. When the target rack is inserted into the target box, the elastic sealing strips are located between the side plates and the target box to form a sealed connection.

[0016] Preferred option. In order to meet the test requirements, the test sample is installed by spring suspension. Two hook rings are symmetrically arranged on the upper flat plate and the lower flat plate respectively. Four sample hooks are evenly distributed along the lateral circumferential direction of the test sample. A double - hook spring is connected between the hook ring and the sample hook.

[0017] It is connected to the sample hook through a double hook spring, where the sample hook is pre-buried in the low-temperature test sample (such as ice cube). After the low-temperature test sample (such as ice cube) is connected to the target frame through four double hook springs, the target frame is pushed into the target box through the dovetail slide block structure. At the same time, an elastic sealing strip is set at the connection edge of the target frame and the target box, and insulation cotton is stuffed into the gaps such as the connection between the barrel and the target box to play a role in insulation. At this time, the sample is quickly installed and the penetration test can be carried out. After the experiment is over, the target frame is pulled out through the dovetail slide block structure. Similarly, after removing the test sample suspended by the double hook spring, hang a new test sample, and then push the target frame into the target box, and repeat the operation to carry out the next set of tests. The sample can be placed in a preset refrigerator in advance to ensure that the test sample reaches the required temperature for the experiment in advance. This process realizes the rapid loading and unloading of the test sample during the test while conducting the penetration test of the low-temperature test sample, which greatly improves the efficiency of the experiment.

[0018] Preferably, in order to better constrain the test sample and meet the test requirements, a fixture is used to fix and install the test sample, and a detachable fixture is provided between the test sample and the target frame; the fixture includes a fixture body and a connecting outer edge, and a mounting hole for the test sample is provided in the center of the fixture body; The upper plate and the lower plate are respectively provided with limit bars, which are parallel to each other and arranged along the longitudinal direction of the target frame; The connecting outer edges on the upper and lower sides of the clamp body are detachably connected to the limit strips on the upper plate and the lower plate respectively, and the central axis of the mounting hole of the clamp is coaxial with the central axis of the gun barrel.

[0019] The limit strip is provided with a fixing threaded hole, and the connecting outer edge is provided with a fixing through hole. The number of the fixing threaded holes is the same as the number of the fixing through holes. The central axis of the fixing threaded hole is coaxial with the central axis of the fixing through hole. The limit strip is connected to the connecting outer edge by bolts.

[0020] Preferably, in order to improve the stability of the connection between the target stand and the target box, a limit slot is provided inside the target box, the limit slot has the same shape as the cross-section of the lower plate, and the lower plate is inserted into the limit slot when the target stand is inserted into the target box.

[0021] The fixture is tightly combined with the target frame by bolts. Before the fixture is connected to the target frame, the test sample to be tested can be installed on the fixture in advance. For example, before the penetration test of the test sample of easily meltable materials such as ice cubes, the fixture is processed and frozen together with water or other liquids. Multiple pre-cooled replacement fixtures can be made at the same time. After the fixture is connected to the target frame by bolts, the target frame is pushed into the target box through the dovetail slide slider structure, and the lower end of the target frame is stuck in the limit slot. At this time, the test sample is quickly installed and the penetration test can be carried out. After the experiment is over, the target frame is pulled out, all bolts are removed, and the fixture is removed and replaced with a pre-cooled replacement fixture taken out of the pre-set cold storage box. Similarly, it is connected by bolts to repeat the next set of tests. The pre-set cold storage box is placed next to the target box to store low-temperature test samples and replacement fixtures in advance. It is used to store easily meltable materials and samples that need to be tested under low temperature conditions. A plurality of pre-cooled replacement fixtures can be placed in the pre-set cold storage box, and the fixtures can be taken out and replaced after the previous set of tests are completed.

[0022] Although the fixed bolt installation method takes a relatively longer time than the spring suspension method, it can better ensure the restraint of the specimen during the test and play a better restraining role.

[0023] Preferably, in order to increase the installation speed of the fixture and the target holder, the limit strip is a magnet, and the outer edge of the connection is an iron material. The target holder adopts a strong magnetic adsorption type, and the connection between the target holder and the fixture is not connected by bolts. Instead, the connection between the target holder and the fixture is a strong magnetic adsorption type. This method can realize the rapid connection between the target holder and the fixture, reduce the time for changing the sample, and is faster and more convenient than the connection method in Example 2. It is more effective to solve the problem of melting of easily fusible materials due to the inability to quickly load and unload, and the difficulty of maintaining low temperature conditions for materials that need to be tested under low temperature conditions.

[0024] Preferably, in order to meet the test requirements and conduct penetration tests on two or more test specimens at the same time, at least two coaxial test specimen mounting holes are provided at the center of the fixture body, and one test specimen can be mounted and fixed in each mounting hole.

[0025] Preferably, in order to improve the test efficiency, the present invention further comprises a pre-set refrigerated box, in which the test samples to be tested and spare replaceable fixtures are refrigerated and stored.

[0026] Preferably, in order to accurately control the test temperature and improve the test accuracy, the target box is provided with a heat-insulating layer on the outside, a heat-insulating filling layer on the inside, and a heat-insulating sealing material is filled at the connection between the gun barrel and the target box. The internal and external heat-insulating layers and the heat-insulating layers can prevent the temperature from changing too much during the test and affect the test accuracy.

[0027] Preferably, in order to accurately control the test temperature and improve the test accuracy, the refrigeration equipment includes a refrigerator, an evaporator and a temperature sensor, the evaporator is located inside the target box and is connected to the refrigerator through a flexible pipe; the temperature sensor is located inside the target box and is connected to the refrigerator signal.

[0028] Beneficial effects: The present invention can quickly install and disassemble sample materials, saving time and effort while greatly improving the test efficiency. By quickly installing the fixture, connecting the target frame and the target box, etc., the melting problem of easily meltable materials caused by the long loading and unloading process of the sample, and the inaccurate results of the samples that need to be tested under low temperature conditions due to the temperature rise are effectively improved; by setting multiple layers of insulation materials on the outside of the target warehouse, filling the inside of the target warehouse with high-performance insulation materials, and setting multiple layers of rubber sealing strips at the connection of the target warehouse, and plugging insulation cotton in the gap of the target warehouse, the effect of insulation is achieved to maintain the ambient temperature required for the test. In particular, easily meltable materials, and other metals and non-metallic materials that need to be tested under low temperature conditions can prevent the rapid melting of easily meltable materials, ensuring that the temperature inside the target box is maintained for a certain period of time. The experimental effect is guaranteed, and the experimental results are more real and accurate. At the same time, a pre-set refrigerator is separately set up to place multiple target frames to be replaced, easily meltable low-temperature materials, and samples that need to be tested under low temperature conditions. A refrigeration system is set on the side of the target chamber, and a temperature sensor is installed inside the target chamber to monitor the temperature in the box in real time. The temperature in the target chamber is monitored, displayed and controlled through the controller of the refrigeration system. A flexible pipe is used to connect the refrigerator and the target chamber to effectively prevent the strong dynamic load impact of the penetration test in the target chamber from being transmitted to the refrigerator, thereby protecting the safe and stable operation of the refrigerator. This makes the present invention have the characteristics of fast loading and unloading, easy-to-melt materials and samples that need to be tested under low temperature conditions can be tested under low temperature conditions, and the device is easy to adjust and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall arrangement structure of the present invention; Figure 2 It is a structural schematic diagram of the first embodiment of the present invention; Figure 3 This is a schematic diagram of the target box structure of the present invention; Figure 4 It is a right side view of the target box of the present invention; Figure 5 is a schematic structural diagram of a second embodiment of the present invention; Figure 6 It is a schematic diagram of the target frame structure of the second embodiment of the present invention; Figure 7 It is a schematic diagram of a second embodiment of the present invention with a heat-insulating structure; Figure 8It is a structural schematic diagram of the first embodiment of the clamp in the second embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a second embodiment of a clamp in a second embodiment of the present invention; Fig.10 A schematic diagram of the structure of the present invention equipped with a pre-installed refrigerator; Fig.11 It is a schematic diagram of the internal arrangement of the pre-set cold storage box of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 , 2 As shown in Figure 4, a low-temperature target chamber experimental device that can be quickly loaded and unloaded includes a target box 1, a target stand 2, a gun barrel 3 and a refrigeration device 4. A quick connection device 5 is provided between the target stand 2 and the target box 1. The target stand 2 is movably connected to the target box 1 in a plug-in manner along the longitudinal direction of the target box 1 through the quick connection device 5. After the target stand 2 is installed, a closed cavity isolated from the outside is formed with the inside of the target box 1; a test sample 6 is installed at the center of the target stand 2, and the center of the gun barrel 3 is opposite to the center of the test sample 6; the refrigeration end of the refrigeration device 4 is located inside the target box 1; and an observation part 11 is provided on the target box 1.

[0032] The target stand 2 and the target box 1 of the present invention can realize the rapid extraction of the target stand 2 and replacement of the test sample 6 through the quick connection device 5, and then quickly seal and install to form an insulated closed cavity. The refrigeration end of the refrigeration equipment 4 controls the temperature inside the target box 1. The observation part 11 on the target box 1 can be a transparent observation plate or a built-in high-speed camera, which can record the entire test process to ensure that easily meltable substances and low-temperature samples can always be in suitable temperature conditions during the experiment, so as to obtain accurate and reliable experimental results.

[0033] like Figure 1 As shown, in order to accurately control the test temperature and improve the test accuracy, the refrigeration equipment 4 includes a refrigerator 41, an evaporator 42 and a temperature sensor 43. The evaporator 42 is located inside the target box 1 and is connected to the refrigerator 41 through a flexible pipe; the temperature sensor 43 is located inside the target box 1 and is connected to the refrigerator 41 signal.

[0034] like Figure 2 and 5As shown, in order to quickly extract the target rack 2 to replace the test sample 6, and then quickly seal and install it to form a heat-insulated closed cavity, the quick connection device 5 includes a limit slide rail 51 and a limit slider 52. The limit slide rail 51 is arranged above the target box 1 in the longitudinal direction, and the limit slider 52 is arranged inside the target rack 2 along its longitudinal direction. The limit slider 52 is slidably connected along the length direction of the limit slide rail 51. Through the sliding connection of the limit slide rail 51 and the limit slider 52, the test sample 6 can be quickly replaced, and at the same time, the target rack 2 can be stably and reliably installed inside the target box 1.

[0035] As Figure 3 shown, in order to facilitate the quick insertion of the target rack 2 into the target box 1 and the convenient replacement of the test sample 6, the length of the limit slide rail 51 is greater than the depth of the target box 1 in the longitudinal direction, and the excess length biases towards the insertion side of the target rack 2.

[0036] In order to further improve the stability and reliability of the connection between the target rack 2 and the target box 1, the number of the quick connection devices 5 is two groups, which are symmetrically arranged on both sides of the target rack 2.

[0037] In order to improve the sealing performance of the connection between the target rack 2 and the target box 1, the limit slide rail 51 is of a dovetail chute structure, and the limit slider 52 is of a dovetail slider structure.

[0038] As Figure 2 、 5 and 6 shown, in order to facilitate the quick insertion of the target rack 2 into the target box 1, the target rack 2 includes an upper flat plate 21, a lower flat plate 22 and side plates 23. The upper flat plate 21 and the lower flat plate 22 are horizontally distributed and are respectively fixedly connected to the side plates 23 at both ends to form a "C" - shaped structure; the upper flat plate 21 is movably connected in a plug - and - draw manner along the longitudinal direction of the target box 1 through the quick connection device 5; when the target rack 2 is inserted into the target box 1, the lower flat plate 22 is located inside the target box 1, and the side plates 23 are hermetically connected to the target box 1.

[0039] In order to improve the strength of the target rack 2, reinforcing gussets are provided at the joints of the upper flat plate 21, the lower flat plate 22 and the side plates 23, which improves the strength of the target rack 2 and ensures the machining accuracy of the target rack 2 at the same time.

[0040] As Figure 7 shown, in order to improve the sealing performance when the target rack 2 and the target box 1 are installed, elastic sealing strips 24 are provided on both sides of the side plates 23. When the target rack 2 is inserted into the target box 1, the elastic sealing strips 24 are located between the side plates 23 and the target box 1 to form a sealed connection.

[0041] In order to further improve the test accuracy, a heat - insulating and adiabatic layer 13 is provided outside the target box 1, a heat - insulating filling layer 14 is provided inside the target box 1, and a heat - insulating and sealing material is filled at the connection between the gun barrel 3 and the target box 1. Embodiment 1

[0042] like Figure 2 As shown, in order to meet the test requirements, the test sample 6 is installed in a spring suspension manner. The upper plate 21 and the lower plate 22 are symmetrically provided with two hook rings 25, respectively. The test sample 6 is evenly distributed with four sample hooks 26 along the lateral circumferential direction. The hook rings 25 and the sample hooks 26 are connected by double hook springs 27.

[0043] The pre-set refrigerated box 8 is placed beside the target box 1 , and the pre-set refrigerated box 8 contains the to-be-tested sample 6 with the sample hook 26 for refrigeration.

[0044] It is connected to the sample hook 26 through a double hook spring 27, wherein the sample hook 26 is pre-buried in the low-temperature test sample 6 (such as ice cubes). After the low-temperature test sample 6 (such as ice cubes) is connected to the target frame 2 through four double hook springs 27, the target frame 2 is pushed into the target box 1 through the dovetail slide block structure. At the same time, at the connection between the target frame 2 and the target box 1, an elastic sealing strip 24 is set on the connection edge, and thermal insulation cotton is stuffed into the gaps such as the connection between the barrel 3 and the target box 1 to play a role in heat preservation. At this time, the sample is quickly installed and the penetration test can be carried out. After the experiment is over, the target frame 2 is pulled out through the dovetail slide block structure. Similarly, after the test sample 6 suspended by the double hook spring 27 is removed, a new test sample 6 is suspended, and then the target frame 2 is pushed into the target box 1, and the operation is repeated to carry out the next set of tests. The sample can be placed in the preset cold storage box 8 in advance to ensure that the test sample 6 reaches the required temperature for the experiment in advance. This process enables rapid loading and unloading of the test sample 6 during the test while conducting the low-temperature test sample 6 penetration test, greatly improving the efficiency of the experiment. Embodiment 2

[0045] like Figure 5-8 , 10 and 11, in order to meet the test requirements, a fixture 7 is used to fix and install the test sample 6, and a detachable fixture 7 is provided between the test sample 6 and the target frame 2; the fixture 7 includes a fixture body 71 and a connecting outer edge 72, and a mounting hole 73 for the test sample 6 is provided in the center of the fixture body 71; The upper plate 21 and the lower plate 22 are respectively provided with limit bars 28, and the limit bars 28 are parallel to each other and arranged along the longitudinal direction of the target frame 2; The connecting outer edges 72 on the upper and lower sides of the clamp body 71 are detachably connected to the limit strips 28 on the upper plate 21 and the lower plate 22 respectively, and the central axis of the mounting hole 73 of the clamp 7 is coaxial with the central axis of the gun barrel 3.

[0046] The limit strip 28 is provided with a fixing threaded hole 29, and the connecting outer edge 72 is provided with a fixing through hole 74. The number of the fixing threaded holes 29 is the same as the number of the fixing through holes 74. The central axis of the fixing threaded hole 29 is coaxial with the central axis of the fixing through hole 74. The limit strip 28 is connected to the connecting outer edge 72 by bolts.

[0047] The target box 1 is provided with a limit slot 12 inside. The limit slot 12 has the same shape as the cross section of the lower plate 22 . When the target stand 2 is inserted into the target box 1 , the lower plate 22 is inserted into the limit slot 12 .

[0048] The fixture 7 is tightly combined with the target frame 2 by bolts, wherein before the fixture 7 is connected to the target frame 2, the test sample 6 to be tested can be installed on the fixture 7 in advance. For example, before the penetration test of the test sample 6 of easily meltable materials such as ice cubes, the fixture 7 is processed and frozen together with water or other liquids. A plurality of pre-cooled replacement fixtures 7 can be made at the same time. After the fixture 7 is connected to the target frame 2 by bolts, the target frame 2 is pushed into the target box 1 through the dovetail slide block structure, and the lower end of the target frame 2 is clamped into the limit slot 12. At this time, the test sample 6 is quickly installed and the penetration test can be carried out. After the experiment is over, the target frame 2 is pulled out, all the bolts are removed, and the fixture 7 is removed and replaced with the pre-cooled replacement fixture 7 taken out of the pre-set cold storage box 8. Similarly, it is connected by bolts to repeat the next set of tests. The pre-set refrigerator 8 is placed next to the target box 1, and serves to store low-temperature test specimens 6 and replacement fixtures 7 in advance, and is used to store easily molten materials and specimens that need to be tested under low temperature conditions. A plurality of pre-cooled replacement fixtures 7 can be placed in the pre-set refrigerator 8, and the fixtures 7 can be taken out and replaced after the previous set of tests are completed.

[0049] Although the fixed bolt installation method takes a relatively longer time than the spring suspension method, it can better ensure the restraint of the specimen during the test and play a better restraining role. Embodiment 3

[0050] like Fig. 9 As shown, in order to meet the test requirements and conduct penetration tests on two or more test specimens 6 at the same time, at least two coaxial test specimen 6 mounting holes 73 are provided at the center of the fixture body 71, and one test specimen 6 can be mounted and fixed in each mounting hole 73. Embodiment 4

[0051] In order to increase the installation speed of the fixture 7 and the target frame 2, the limiting bar 28 is a magnet and the connecting outer edge 72 is made of iron material.

[0052] The target stand 2 adopts a strong magnetic adsorption type, and the connection between the target stand 2 and the fixture 7 is not connected by bolts, but instead the connection between the target stand 2 and the fixture 7 is a strong magnetic adsorption type. This method can realize the rapid connection between the target stand 2 and the fixture 7, reduce the time for replacing the sample, and is faster and more convenient than the connection method in the second embodiment. It is more effective to solve the problem that the easily fusible materials melt due to the inability to quickly load and unload, and the materials that need to be tested under low temperature conditions are difficult to maintain low temperature conditions.

[0053] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cryogenic target chamber experimental device that can be quickly assembled and disassembled, comprising a target box (1), a target rack (2), a gun barrel (3), and a refrigeration device (4), characterized in that: A quick connection device (5) is provided between the target rack (2) and the target box (1). The target rack (2) is connected to the target box (1) in a pluggable and movable manner along the longitudinal direction of the target box (1). After the target rack (2) is installed, a closed cavity isolated from the outside is formed inside the target box (1); A test specimen (6) is installed at the center of the target rack (2), and the center of the gun barrel (3) is directly opposite to the center of the test specimen (6); The refrigeration end of the refrigeration device (4) is located inside the target box (1); An observation part (11) is provided on the target box (1).

2. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 1, characterized in that: The quick connection device (5) includes a limit slide rail (51) and a limit slide block (52). The limit slide rail (51) is arranged above the target box (1) along the longitudinal direction, and the limit slide block (52) is arranged inside the target rack (2) along its longitudinal direction. The limit slide block (52) is slidably connected along the length direction of the limit slide rail (51).

3. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 2, characterized in that: The number of the quick connection devices (5) is two groups, which are symmetrically arranged on both sides of the target rack (2).

4. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 2 or 3, characterized in that: The limit slide rail (51) is of a dovetail chute structure, and the limit slide block (52) is of a dovetail slide block structure.

5. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 1 is characterized in that: The target rack (2) includes an upper flat plate (21), a lower flat plate (22), and side plates (23). The upper flat plate (21) and the lower flat plate (22) are horizontally distributed and are respectively fixedly connected to the side plates (23) at both ends to form a "C"-shaped structure; the upper flat plate (21) is connected to the target box (1) in a pluggable and movable manner along the longitudinal direction of the target box (1) through the quick connection device (5); when the target rack (2) is inserted into the target box (1), the lower flat plate (22) is located inside the target box (1), and the side plates (23) are hermetically connected to the target box (1).

6. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 5, characterized in that: Elastic sealing strips (24) are provided on both sides of the side plates (23). When the target rack (2) is inserted into the target box (1), the elastic sealing strips (24) are located between the side plates (23) and the target box (1) to form a sealed connection.

7. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 5 or 6, characterized in that: Two hook rings (25) are respectively symmetrically arranged on the upper flat plate (21) and the lower flat plate (22). Four specimen hooks (26) are evenly distributed along the circumferential direction of the side of the test specimen (6). The hook rings (25) and the specimen hooks (26) are connected by double-hook springs (27).

8. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 5 or 6, characterized in that: A detachable fixture (7) is provided between the test specimen (6) and the target rack (2); the fixture (7) includes a fixture body (71) and a connecting outer edge (72), and an installation hole (73) for the test specimen (6) is provided at the center of the fixture body (71); Limit strips (28) are respectively provided on the upper flat plate (21) and the lower flat plate (22). The limit strips (28) are parallel to each other and are arranged along the longitudinal direction of the target rack (2); The connecting outer edges (72) on the upper and lower sides of the fixture body (71) are respectively detachably connected to the limit strips (28) on the upper flat plate (21) and the lower flat plate (22). The central axis of the installation hole (73) of the fixture (7) is coaxial with the central axis of the gun barrel (3).

9. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 8, characterized in that: The limiting strip (28) is provided with a fixing threaded hole (29), and the connecting outer edge (72) is provided with a fixing through hole (74). The number of the fixing threaded holes (29) is the same as the number of the fixing through holes (74). The central axis of the fixing threaded hole (29) is coaxial with the central axis of the fixing through hole (74). The limiting strip (28) and the connecting outer edge (72) are connected by bolts.

10. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 8, characterized in that: The limiting strip (28) is a magnet, and the connecting outer edge (72) is made of iron material.

11. The low temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 5 or 6, characterized in that: A limiting slot (12) is provided inside the target box (1), the limiting slot (12) having a shape identical to the cross section of the lower plate (22), and when the target stand (2) is inserted into the target box (1), the lower plate (22) is inserted into the limiting slot (12).

12. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 1, characterized in that: The target box (1) is provided with a heat-insulating layer (13) on the outside, the target box (1) is provided with a heat-insulating filling layer (14) on the inside, and the connection between the gun barrel (3) and the target box (1) is filled with a heat-insulating sealing material.

13. The low temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 1, characterized in that: The refrigeration device (4) comprises a refrigerator (41), an evaporator (42) and a temperature sensor (43); the evaporator (42) is located inside the target box (1) and is connected to the refrigerator (41) via a flexible pipe; the temperature sensor (43) is located inside the target box (1) and is signal-connected to the refrigerator (41).

14. The low-temperature target chamber experimental device capable of rapid assembly and disassembly according to claim 8, characterized in that: The center of the clamp body (71) is provided with at least two mounting holes (73) for coaxial test specimens (6).

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