Device and method for testing volume expansion coefficient of explosives and powders

Abstract

The invention discloses an explosive volume expansion coefficient testing device and testing method. The explosive volume expansion coefficient testing device comprises a control box, a testing mechanism, a testing container and a testing module, the testing mechanism is arranged at the left end of the control box, the testing mechanism comprises a bottom frame, a driving motor, a first linkage arm, a reciprocating mechanism, an adjusting mechanism and the like, a testing container can be placed at the inner end of the bottom frame, excitation and ignition of an explosive body are achieved through the reciprocating mechanism, and the reciprocating mechanism comprises a guide rod, an upper moving plate, a lower moving plate and the like; through cooperation with an adjusting mechanism, synchronous or separated movement of the upper moving plate and the lower moving plate can be achieved, replacement of explosives and powders in the testing container can be achieved under the condition that a driving motor is not stopped, the next test can be rapidly carried out, unnecessary repeated switching operation is reduced, and the testing efficiency is improved. And the testing efficiency of the volume expansion coefficient of explosives and powders can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of explosive performance testing technology, specifically to a device and method for testing the expansion coefficient of explosives. Background Technology

[0002] Explosives are solid or semi-solid substances made of gunpowder, explosives or other energetic materials. They have rapid combustion or explosive properties and are often used in weapons, propellants or engineering blasting. Their expansion coefficient is the relative rate of change of volume when the temperature or pressure changes by a unit. It is used to quantify the expansion capacity of explosives during combustion or explosion. This parameter is crucial for weapon design, ammunition safety assessment and blasting effect prediction.

[0003] In some existing expansion coefficient testing devices, the gunpowder activation module and the drive module are fixedly connected. This means that after completing a set of gunpowder tests, the device needs to be shut down when changing gunpowder. Frequent shutdowns and restarts may accelerate mechanical fatigue and wear, leading to damage and deformation of key components, decreased accuracy, and potentially affecting the testing results of the gunpowder expansion coefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for testing the expansion coefficient of explosives, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for testing the expansion coefficient of explosives, comprising a control box, a testing mechanism connected to the left end of the control box, a testing container provided at the bottom of the testing mechanism, and a testing module provided at the left end of the testing container;

[0006] The testing mechanism includes a base frame, a support plate, a top panel, a drive motor, a first linkage arm, a reciprocating mechanism, an adjustment mechanism, and a locking mechanism. A base frame is located at the left end of the control box. A slot is located at the front center of the top surface of the base frame. A support plate is located near the rear end of the top surface of the base frame. A top panel is connected to the top surface of the support plate. A drive motor is located at the center of the top surface of the top panel. A rotating rod is connected to the outer side of the drive shaft of the drive motor. The other end of the rotating rod is connected to a first linkage arm. The front end of the bottom surface of the top panel is connected to the front end of the base frame via the reciprocating mechanism. An adjustment mechanism is located near the right end of the reciprocating mechanism on the top surface of the base frame. The rear bottom end of the base frame is connected to the testing container via the locking mechanism.

[0007] By adopting the above technical solution, the control box, testing mechanism, testing container and testing module are designed in sections to achieve functional modularity, which facilitates subsequent maintenance, reduces the cost of use and maintenance, and ensures the safety of fire and explosive testing. In addition, the drive motor drives the reciprocating mechanism through the rotating rod and the linkage arm to realize the automated control of the testing process, reduce manual intervention, and improve data consistency and operational safety.

[0008] Preferably, the reciprocating mechanism includes guide rods, an upper moving plate, and a lower moving plate. A set of guide rods is provided at both the left and right ends of the bottom front of the top panel. The bottom ends of the two sets of guide rods are respectively connected to the left and right ends of the top front of the base frame. An upper moving plate and a lower moving plate are provided at the upper and lower positions of the two sets of guide rods.

[0009] By adopting the above technical solution, the guide rod acts as a rigid guide rail, and the structural stability is enhanced by the symmetrical arrangement on both sides, preventing jamming or tilting caused by unilateral force. This ensures that the upper and lower moving plates move vertically along a fixed path, avoiding deviation or shaking, and improving the accuracy of the test. Furthermore, the upper and lower moving plates can be connected or separated, allowing the gunpowder to be replaced without stopping the drive motor, reducing unnecessary switching operations and improving testing efficiency.

[0010] Preferably, the upper movable plate has a movable groove at the top center, a set of central shafts is provided in the middle of the movable groove, the bottom end of the linkage arm is connected to the middle end of the central shafts, and a set of connecting slots is provided on both the left and right sides of the upper movable plate near the bottom.

[0011] By adopting the above technical solution, the movable groove and the central shaft can form a rotary pair, which transforms the swing motion of the first linkage arm into the linear reciprocating motion of the upper moving plate. This reduces frictional loss and improves transmission efficiency. Furthermore, the central shaft, as a hinge point, allows the first linkage arm to adapt to changes in angle during movement, avoiding jamming or structural stress concentration caused by rigid connection.

[0012] Preferably, a set of springs is provided at both ends of the bottom surface of the lower moving plate, corresponding to the positions of the two sets of guide rods. The springs are fitted on the outside of the guide rods and connected to the top surface of the base frame at their bottom ends. A set of pressing members is provided at the middle of the bottom surface of the lower moving plate, corresponding to the position of the test container. A set of side arms is connected to both the left and right sides of the lower moving plate. A set of linkage arms is provided at the rear end of each of the two sets of side arms. The other ends of the two sets of linkage arms are connected by a set of synchronizing rods. A set of connecting clips is provided on the top surface of each of the two sets of side arms. The rear ends of the two sets of connecting clips are connected by a set of springs.

[0013] By adopting the above technical solution, a spring is set on the outside of the guide rod to provide elastic support and drive the lower moving plate to automatically reset. The linkage arm two and the synchronous rod form a symmetrical linkage mechanism. When the right side arm rotates, the linkage arm two and the synchronous rod can drive the left side arm to rotate, so as to ensure that the left and right side arms move synchronously. The spring two connects two sets of connecting clips to balance the force on the side arms and pull the two sets of side arms to rotate inward.

[0014] Preferably, the adjustment mechanism includes a fixed seat, a slot, a turntable, a handle, a contact plate, and a limiting rod. The fixed seat is located on the top surface of the base frame near the right end of the lower moving plate. The fixed seat has a slot in the middle, and a set of turntables is located in the slot. The front end of the fixed seat is connected to a handle corresponding to the turntable. A set of contact plates is located on the left side of the fixed seat, and a set of limiting rods is located at the upper and lower positions on the right side of the contact plates. The right ends of both sets of limiting rods extend through to the right side of the fixed seat.

[0015] By adopting the above technical solution, the turntable and handle form a manual fine-tuning mechanism. The lateral displacement of the contact plate can be controlled by rotating the turntable, thereby adjusting the rotational movement of the right side arm of the lower moving plate and changing the connection relationship between the upper and lower moving plates.

[0016] Preferably, the locking mechanism includes an expansion cylinder, a spring, a button, a pressing block, a fixed shaft, a locking frame, a spring ring, and a locking element. A set of expansion cylinders is provided at the rear bottom of the base frame. A set of buttons is connected inside the expansion cylinders via the spring. A set of pressing blocks is connected to the front end of the buttons. The front end of the pressing blocks extends through to the front end of the expansion cylinders. A set of fixed shafts is provided at the bottom of the base frame near both the upper and lower ends of the expansion cylinders. A locking frame is connected to each of the two sets of fixed shafts corresponding to the pressing blocks. The outer sides of the upper and lower sets of locking frames are connected by a spring ring. A locking element corresponding to the two sets of locking frames is provided at the rear end of the test container.

[0017] By adopting the above technical solution, when the test container is placed in the base frame, the locking component can be pushed back between the two sets of locking frames. The two sets of locking frames approach each other through the elastic force of the spring ring, clamping and fixing the locking component from the top and bottom, thereby fixing the test container in the base frame. This ensures the stability of the test container during the test process, prevents the test container from separating from the base frame, and ensures safety during the test.

[0018] Preferably, the bottom end of the right side arm is provided with a set of extension arms, and the right end of the extension arms can contact the left side of the contact plate.

[0019] By adopting the above technical solution, the contact plate can contact the extension arm, and the extension arm can drive the right side arm to rotate.

[0020] Preferably, the two sets of linkage arms at the left and right ends are installed in opposite directions.

[0021] Preferably, there is a gap between the upper moving plate and the lower moving plate, and the gap distance is greater than the moving path of the upper moving plate.

[0022] By adopting the above technical solution, after the upper moving plate and the lower moving plate are separated, the upper moving plate continues to move up and down reciprocatingly without affecting the lower moving plate.

[0023] This invention provides a testing method for a device for testing the coefficient of thermal expansion of explosives, comprising the following steps:

[0024] S1: Place the explosive to be tested into the test container, and then snap the test container into the base frame;

[0025] S2: The drive motor drives the upper and lower moving plates to move synchronously up and down along the guide rod via the rotating rod and the linkage arm.

[0026] S3: After the lower moving plate moves to the bottom, the lower pressing part contacts the test container and ignites the explosive body;

[0027] S4: The explosive material explodes inside the test container, and the expansion coefficient is collected through the test module outside the test container;

[0028] S5: Rotate the handle to press the right side arm through the contact plate, causing the upper moving plate to separate from the lower moving plate;

[0029] S6: Remove the test container, replace the explosive material inside the test container, and reset the test container;

[0030] S7: Turn the handle to reset the contact plate, reconnect the upper and lower moving plates, and proceed to the next round of testing.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. The present invention utilizes a testing mechanism located at the left end of the control box. The testing mechanism includes components such as a base frame, support plate, top panel, drive motor, linkage arm, reciprocating mechanism, and adjustment mechanism. These components work together to excite the explosive material, detect the expansion coefficient of the explosive material, and allow the explosive material to be replaced without stopping the drive motor. This reduces frequent shutdown and start-up operations, ensures smooth testing, slows down the aging of equipment components, and effectively extends the service life.

[0033] 2. The present invention uses a reciprocating mechanism set at the front end of the base frame. The reciprocating mechanism includes components such as guide rods, upper moving plate and lower moving plate. The upper moving plate and lower moving plate can move up and down along two sets of guide rods, which facilitates the automatic activation of the explosive body, reduces the manual intervention process, and can effectively improve the safety during detection.

[0034] 3. The present invention utilizes an adjustment mechanism located at the right end of the lower moving plate. This adjustment mechanism includes components such as a fixed base, a slot, a turntable, a handle, a contact plate, and a limiting rod. These components work together to rotate the turntable by rotating the handle, thereby enabling the separation of the upper and lower moving plates via the contact plate. This allows for the removal of the test container and the replacement of its internal explosive without stopping the machine, facilitating the testing of different explosives, effectively reducing energy consumption, and improving testing efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the testing mechanism structure of the present invention;

[0037] Figure 3 This is a front view schematic diagram of the reciprocating mechanism of the present invention;

[0038] Figure 4 This is a schematic diagram of the rear view of the lower movable plate structure of the present invention;

[0039] Figure 5 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0040] Figure 6 This is a front view schematic diagram of the adjustment mechanism of the present invention;

[0041] Figure 7 This is a schematic diagram of the locking mechanism of the present invention.

[0042] In the diagram: Control box-1, Testing mechanism-2, Testing container-3, Testing module-4, Base frame-21, Support plate-22, Top panel-23, Drive motor-24, Linkage arm-1-25, Reciprocating mechanism-26, Adjusting mechanism-27, Locking mechanism-28, Slot-211, Rotating rod-241, Guide rod-261, Upper moving plate-262, Lower moving plate-263, Movable slot-2621, Central shaft-2622, Connecting slot-2623, Spring-1-263 1. Pressing component - 2632, Side arm - 2633, Linkage arm two - 2634, Synchronizing rod - 2635, Connecting clip - 2636, Spring two - 2637, Fixing base - 271, Groove - 272, Turntable - 273, Handle - 274, Contact plate - 275, Limiting rod - 276, Extension tube - 281, Spring three - 282, Button - 283, Extrusion block - 284, Fixing shaft - 285, Locking frame - 286, Elastic ring - 287, Locking component - 288. Detailed Implementation

[0043] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0044] Please see Figures 1-2 This invention provides a device and method for testing the expansion coefficient of explosives, including a control box 1. A testing mechanism 2 is connected to the left end of the control box 1. A testing container 3 is placed at the bottom of the testing mechanism 2. A testing module 4 is connected to the left end of the testing container 3. The testing mechanism 2 includes a base frame 21, a support plate 22, a top panel 23, a drive motor 24, a linkage arm 25, a reciprocating mechanism 26, an adjustment mechanism 27, and a locking mechanism 28. A set of "C"-shaped base frames 21 is installed at the left end of the control box 1. The testing container 3 can be placed inside the base frame 21. A slot 211 is opened at the front middle of the top of the base frame 21. The outer side of the testing container 3 near the top can be inserted into the slot 211 for easy positioning and fixing of the testing container 3. A set of support plates 22 are fixedly connected near the rear end of the base frame 21. A set of top panels 23 are fixedly connected to the top surface of the support plates 22. A set of drive motors 24 are installed in the middle of the top surface of the top panels 23. A set of rotating rods 241 are fixedly connected to the outside of the drive shaft of the drive motors 24. A set of linkage arms 25 is hinged to the other end of the rotating rods 241. The rotation of the drive shaft of the drive motors 24 can drive the linkage arms 25 to move through the rotating rods 241. The front end of the bottom of the top panels 23 is connected to the front end of the base frame 21 through a reciprocating mechanism 26. The bottom end of the linkage arms 25 is connected to the reciprocating mechanism 26. An adjustment mechanism 27 is provided on the top surface of the base frame 21 near the right end of the reciprocating mechanism 26. The rear bottom end of the base frame 21 is connected to the test container 3 through a locking mechanism 28.

[0045] Specifically, the control box 1, testing mechanism 2, testing container 3, and testing module 4 are designed in a partitioned manner to achieve functional modularity, which facilitates subsequent maintenance, reduces usage and maintenance costs, and ensures safety during fire and explosive testing. In addition, the drive motor 24 drives the reciprocating mechanism 26 through the rotating rod 241 and the linkage arm 25, which can realize automated control of the testing process, reduce manual intervention, and improve data consistency and operational safety.

[0046] Please see Figures 2-3 The reciprocating mechanism 26 includes guide rods 261, an upper moving plate 262, and a lower moving plate 263. A set of guide rods 261 is fixedly connected to both the left and right ends of the bottom of the top panel 23. The bottom ends of the two sets of guide rods 261 are fixedly connected to the left and right ends of the top of the base frame 21, respectively. The upper moving plate 262 and the lower moving plate 263 are slidably connected to the upper and lower positions of the two sets of guide rods 261. There is a gap between the upper moving plate 262 and the lower moving plate 263. The gap distance is greater than the moving path of the upper moving plate 262. After the upper moving plate 262 and the lower moving plate 263 are separated, the upper moving plate 262 continues to perform up and down reciprocating motion without affecting the lower moving plate 263.

[0047] Specifically, the guide rod 261 serves as a rigid guide rail, and its symmetrical arrangement enhances structural stability, preventing jamming or tilting caused by unilateral force. This ensures that the upper moving plate 262 and the lower moving plate 263 move vertically along a fixed path, avoiding deviation or swaying and improving test accuracy. Furthermore, the upper moving plate 262 and the lower moving plate 263 can be connected or separated, allowing for the replacement of gunpowder without stopping the drive motor 24, reducing unnecessary switching operations and improving testing efficiency.

[0048] Please see Figures 2-3 The upper movable plate 262 has a movable groove 2621 at the top center. A set of central shafts 2622 is fixedly connected to the middle of the movable groove 2621. The bottom end of the linkage arm 25 is rotatably connected to the middle end of the central shaft 2622. When the linkage arm 25 moves, it can pull the central shaft 2622, thereby driving the upper movable plate 262 to move up and down along the guide rod 261. A set of connecting slots 2623 are opened on both the left and right sides of the upper movable plate 262 near the bottom.

[0049] Specifically, the movable groove 2621 and the central shaft 2622 can form a rotary pair, which converts the swing motion of the linkage arm 25 into the linear reciprocating motion of the upper moving plate 262, thereby reducing friction loss and improving transmission efficiency. Furthermore, the central shaft 2622 serves as a hinge point, allowing the linkage arm 25 to adapt to changes in angle during movement, thus avoiding jamming or structural stress concentration caused by rigid connection.

[0050] Please see Figures 2-4Each of the two guide rods 261 has a set of springs 2631 connected to the left and right ends of the bottom surface of the lower moving plate 263. The springs 2631 are sleeved on the outside of the guide rods 261, and their bottom ends are fixedly connected to the top surface of the base frame 21. The springs 2631 can push the lower moving plate 263 upwards, achieving automatic reset. Each of the two guide rods 261 has a set of limiting plates fixedly connected to its middle ends. The springs 2631 can cause the top surface of the lower moving plate 263 to fit against the bottom surface of the limiting plates, thus limiting the position of the lower moving plate 263. A set of pressing members 2632 is fixedly connected to the middle end of the bottom surface of the lower moving plate 263, corresponding to the position of the test container 3. After the lower moving plate 263 moves to its lowest point, the bottom end of the pressing members 2632 can work in conjunction with the test container 3 to ignite the explosive material inside the test container 3. Both sides of the right side are hinged with a set of side arms 2633. The rear ends of both sets of side arms 2633 are fixed with a set of linkage arms 2634. The two sets of linkage arms 2634 at the left and right ends are installed in opposite directions, one up and one down. The other ends of the two sets of linkage arms 2634 are connected by a set of synchronizing rods 2635. The left and right ends of the synchronizing rods 2635 are hinged to the other ends of the two sets of linkage arms 2634, which can realize the relative movement of the two sets of linkage arms 2634 and the side arms 2633. The top surfaces of the two sets of side arms 2633 are fixedly connected with a set of connecting clips 2636. The rear ends of the two sets of connecting clips 2636 are connected by a set of springs 2637. The springs 2637 can drive the two sets of side arms 2633 to rotate relative to each other, thereby locking the connecting clips 2636 into the connecting slots 2623, realizing the fixed connection between the upper moving plate 262 and the lower moving plate 263.

[0051] Specifically, spring 2631 is sleeved on the outside of guide rod 261 to provide elastic support and can drive the lower moving plate 263 to automatically reset. Linkage arm 2634 and synchronization rod 2635 form a symmetrical linkage mechanism. When the right side arm 2633 rotates, the left side arm 2633 can be driven to rotate through linkage arm 2634 and synchronization rod 2635 to ensure that the left and right side arms 2633 move synchronously. Spring 2637 connects two sets of connecting clips 2636 to balance the force on the side arm 2633 and pull the two sets of side arms 2633 to rotate inward.

[0052] Please see Figures 5-6The adjustment mechanism 27 includes a fixed base 271, a slot 272, a turntable 273, a handle 274, a contact plate 275, and a limiting rod 276. A fixed base 271 is fixedly connected to the top surface of the base frame 21 near the right end of the lower moving plate 263. A slot 272 is opened in the middle of the fixed base 271, and a set of turntables 273 is rotatably connected within the slot 272. A handle 274 corresponding to the turntable 273 is rotatably connected to the front end of the fixed base 271. The handle 274 can drive the turntable 273 to rotate. A set of contact plates 275 is provided on the left side of the fixed base 271, and the upper and lower right sides of the contact plates 275 are... Each of the two sets of limit rods 276 is fixedly provided. The right ends of both sets of limit rods 276 extend through to the right side of the fixed base 271. The turntable 273 is an eccentric wheel. The handle 274 can drive the turntable 273 to rotate. After the turntable 273 rotates, its left end can extend to the left end of the slot 272, thereby pushing the contact plate 275 to move to the left. Furthermore, a set of extension arms is fixedly connected to the bottom end of the right side arm 2633. The right end of the extension arm can contact the left side of the contact plate 275. The contact plate 275 contacts the extension arm, and the leftward movement of the contact plate 275 presses the extension arm, thereby driving the right side arm 2633 to rotate.

[0053] Specifically, the turntable 273, together with the handle 274, constitutes a manual fine-tuning mechanism. The lateral displacement of the contact plate 275 can be controlled by rotating the turntable 273, thereby adjusting the rotational movement of the right side arm 2633 of the lower moving plate 263, and changing the connection relationship between the upper moving plate 262 and the lower moving plate 263.

[0054] Please see Figure 7The locking mechanism 28 includes an extension tube 281, a spring 282, a button 283, a pressing block 284, a fixed shaft 285, a locking frame 286, a spring ring 287, and a locking element 288. An extension tube 281 is installed at the rear bottom of the base frame 21. A button 283 is connected inside the extension tube 281 via the spring 282. The rear end of the button 283 extends to the outside of the base frame 21 and is flush with the rear end face of the base frame 21. A pressing block 284 is fixedly connected to the front end of the button 283. By pressing the button 283, the spring 282 is compressed, causing the pressing block 284 to move forward. The front end of the pressing block 284 extends through to the front end of the extension tube 281. A fixed shaft 285 is installed at both ends of the base frame 21 near the upper and lower ends of the extension tube 281. Both fixed shafts 285 are connected to the corresponding positions of the pressing blocks 284. A set of locking frames 286 is rotatably connected to a fixed shaft 285 and can rotate around the fixed shaft 285. The outer sides of the upper and lower sets of locking frames 286 are connected by a set of elastic rings 287. The rear end of the test container 3 is provided with locking members 288 corresponding to the two sets of locking frames 286. The rear end of the locking member 288 is hemispherical and can be locked onto the front ends of the two sets of locking frames 286. The elastic rings 287 are made of rubber and can bind the two sets of locking frames 286 with elasticity, so that the two sets of locking frames 286 fit together and it is easy to fix the locking member 288. After the squeezing block 284 moves forward, the upper and lower ends of the front end can contact the rear ends of the opposite surfaces of the two sets of locking frames 286 respectively, and push the two sets of locking frames 286 to open the elastic rings 287 and unfold outward, releasing the locking effect on the locking member 288. The locking member 288 and the test container 3 can be removed.

[0055] Specifically, when the test container 3 is placed inside the base frame 21, the locking member 288 can be pushed back between the two sets of locking frames 286. The two sets of locking frames 286 approach each other through the elastic force of the elastic ring 287, clamping and fixing the locking member 288 from the top and bottom, thereby fixing the test container 3 inside the base frame 21. This ensures the stability of the test container 3 during the test, prevents the test container 3 from separating from the base frame 21, and ensures safety during the test.

[0056] This invention provides a testing method for a device for testing the coefficient of thermal expansion of explosives, comprising the following steps:

[0057] S1: Place the explosive to be tested into the test container 3, then place the test container 3 into the base frame 21. The outer side of the test container 3 near the top is inserted into the slot 211, and the locking piece 288 is inserted between the two sets of locking frames 286. The two sets of locking frames 286 are squeezed by the elastic ring 287 to lock the locking piece 288.

[0058] S2: Start the drive motor 24. The drive motor 24 drives the upper moving plate 262 and the lower moving plate 263 to move up and down synchronously along the guide rod 261 through the rotating rod 241 and the linkage arm 25.

[0059] S3: After the lower moving plate 263 moves to the bottom, the lower pressing part 2632 contacts the test container 3, igniting the explosive material inside the test container 3;

[0060] S4: The explosive body explodes inside the test container 3, and the expansion coefficient is collected through the test module 4 outside the test container 3;

[0061] S5: Turn the handle 274, the turntable 273 rotates, the left end extends to the left end of the slot 272, contacts and pushes the contact plate 275 to the left, the contact plate 275 then squeezes and rotates the right side arm 2633 through the extension arm, after the right side arm 2633 rotates, the left side arm 2633 is driven to rotate through the linkage arm 2634 and the synchronous rod 2635, so that the connecting clip 2636 is disengaged from the connecting slot 2623, and the upper moving plate 262 and the lower moving plate 263 are separated;

[0062] S6: After the upper moving plate 262 and the lower moving plate 263 are separated, the spring 2631 drives the lower moving plate 263 to move up to the bottom surface of the limiting plate, and the lower pressing part 2632 is separated from the test container 3. At this time, the test container 3 is taken out, the explosive body in the test container 3 is replaced, or a new test container 3 is replaced, and the test container 3 is placed back into the base frame 21.

[0063] S7: Turn the handle 274 again, the turntable 273 rotates, and the left end returns to the slot 272. At this time, the spring 2637 can drive the two sets of side arms 2633 to rotate relative to each other. The connecting clip 2636 is re-engaged into the connecting slot 2623, realizing the fixed connection between the upper moving plate 262 and the lower moving plate 263. The extension arm at the bottom of the right side arm 2633 can push the contact plate 275 to the right to reset. The upper moving plate 262 and the lower moving plate 263 are reconnected and can move synchronously, which is convenient for the next round of testing.

[0064] This invention provides a device and method for testing the expansion coefficient of explosives. The invention utilizes a testing mechanism 2 located at the left end of the control box 1. The testing mechanism 2 includes a base frame 21, a support plate 22, a top panel 23, a drive motor 24, a linkage arm 25, a reciprocating mechanism 26, and an adjustment mechanism 27. These components work together to excite the explosive and detect its expansion coefficient. Furthermore, the explosive can be replaced without stopping the drive motor 24, reducing frequent stop-start operations, ensuring smooth testing, slowing down the aging of equipment components, and effectively extending its service life. The reciprocating mechanism 26, located at the top front end of the base frame 21, includes a guide rod 261, an upper moving plate 262, and a lower moving plate 263. The upper moving plate... Plate 262 and lower moving plate 263 can reciprocate up and down along two sets of guide rods 261, facilitating automatic activation of the explosive material, reducing manual intervention, and effectively improving safety during testing. An adjustment mechanism 27, located at the right end of the lower moving plate 263, includes components such as a fixed base 271, slot 272, turntable 273, handle 274, contact plate 275, and limit rod 276. By rotating the handle 274, the turntable 273 can be rotated, thereby separating the upper moving plate 262 and lower moving plate 263 via the contact plate 275. This allows for the removal of the test container 3 and the replacement of the explosive material within it without stopping the machine, facilitating the testing of different explosive materials, effectively reducing energy consumption, and improving testing efficiency.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for testing the coefficient of thermal expansion of explosives, characterized in that: It includes a control box (1), a test mechanism (2) is connected to the left end of the control box (1), a test container (3) is provided at the bottom of the test mechanism (2), and a test module (4) is provided at the left end of the test container (3); The testing mechanism (2) includes a base frame (21), a support plate (22), a top panel (23), a drive motor (24), a linkage arm (25), a reciprocating mechanism (26), an adjustment mechanism (27), and a locking mechanism (28). A base frame (21) is located at the left end of the control box (1). A slot (211) is located at the front center of the top surface of the base frame (21). A support plate (22) is located near the rear end of the top surface of the base frame (21). A top panel (23) is connected to the top surface of the support plate (22). 23) A set of drive motors (24) is provided at the middle of the top surface. A set of rotating rods (241) is connected to the outside of the drive shaft of the drive motors (24). A set of linkage arms (25) is connected to the other end of the rotating rods (241). The front end of the bottom of the top panel (23) is connected to the front end of the base frame (21) through a reciprocating mechanism (26). An adjustment mechanism (27) is provided on the top surface of the base frame (21) near the right end of the reciprocating mechanism (26). The rear bottom end of the base frame (21) is connected to the test container (3) through a locking mechanism (28).

2. The device for testing the coefficient of thermal expansion of explosives according to claim 1, characterized in that: The reciprocating mechanism (26) includes a guide rod (261), an upper moving plate (262) and a lower moving plate (263). A set of guide rods (261) is provided at both the left and right ends of the bottom of the top panel (23). The bottom ends of the two sets of guide rods (261) are respectively connected to the left and right ends of the top of the base frame (21). An upper moving plate (262) and a lower moving plate (263) are provided at the upper and lower positions of the two sets of guide rods (261).

3. The device for testing the coefficient of thermal expansion of explosives according to claim 2, characterized in that: The upper movable plate (262) has a movable groove (2621) at the top center, and a set of central shafts (2622) is provided in the middle of the movable groove (2621). The bottom end of the linkage arm (25) is connected to the middle end of the central shafts (2622). A set of connecting slots (2623) is provided on both the left and right sides of the upper movable plate (262) near the bottom.

4. The device for testing the coefficient of thermal expansion of explosives according to claim 2, characterized in that: The lower moving plate (263) has a set of springs (2631) at both ends of the bottom surface corresponding to the positions of the two sets of guide rods (261). The springs (2631) are sleeved on the outside of the guide rods (261) and the bottom end is connected to the top surface of the base frame (21). The lower moving plate (263) has a set of pressing parts (2632) at the middle of the bottom surface corresponding to the position of the test container (3). The lower moving plate (263) has a set of side arms (2633) on both the left and right sides. The two sets of side arms (2633) have a set of linkage arms (2634) at the rear end. The other ends of the two sets of linkage arms (2634) are connected by a set of synchronizing rods (2635). The top surface of the two sets of side arms (2633) has a set of connecting clips (2636). The rear ends of the two sets of connecting clips (2636) are connected by a set of springs (2637).

5. The device for testing the coefficient of thermal expansion of explosives according to claim 4, characterized in that: The adjustment mechanism (27) includes a fixed seat (271), a slot (272), a turntable (273), a handle (274), a contact plate (275), and a limiting rod (276). The fixed seat (271) is located on the top surface of the base frame (21) near the right end of the lower moving plate (263). The fixed seat (271) has a slot (272) in the middle. A set of turntables (273) is located in the slot (272). The front end of the fixed seat (271) is connected to a handle (274) corresponding to the turntable (273). A set of contact plates (275) is located on the left side of the fixed seat (271). A set of limiting rods (276) is located on the upper and lower right sides of the contact plates (275). The right ends of the two sets of limiting rods (276) extend through to the right side of the fixed seat (271).

6. The device for testing the coefficient of thermal expansion of explosives according to claim 1, characterized in that: The locking mechanism (28) includes an extension tube (281), a spring (282), a button (283), a pressing block (284), a fixed shaft (285), a locking frame (286), a spring ring (287), and a locking element (288). A set of extension tubes (281) is provided at the rear bottom of the base frame (21). A set of buttons (283) is connected inside the extension tubes (281) via springs (282). A set of pressing blocks (284) is connected to the front end of the buttons (283). (284) The front end extends through to the front end of the expansion tube (281), and a set of fixed shafts (285) are provided at the bottom end of the base frame (21) near the upper and lower ends of the expansion tube (281). A set of locking frames (286) is connected to the positions of the two sets of fixed shafts (285) corresponding to the positions of the extrusion block (284). The outer sides of the upper and lower sets of locking frames (286) are connected by a set of elastic rings (287). The rear end of the test container (3) is provided with locking parts (288) corresponding to the two sets of locking frames (286).

7. The device for testing the coefficient of thermal expansion of explosives according to claim 5, characterized in that: The right side arm (2633) has a set of extension arms at its bottom end, and the right end of the extension arms can contact the left side of the contact plate (275).

8. The device for testing the coefficient of thermal expansion of explosives according to claim 4, characterized in that: The two sets of linkage arms (2634) at the left and right ends are installed in opposite directions.

9. The device for testing the coefficient of thermal expansion of explosives according to claim 1, characterized in that: There is a gap between the upper moving plate (262) and the lower moving plate (263), and the gap distance is greater than the moving path of the upper moving plate (262).

10. A testing method for a device for testing the coefficient of thermal expansion of explosives, as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Place the explosive to be tested into the test container (3), and then insert the test container (3) into the base frame (21); S2: The drive motor (24) drives the upper moving plate (262) and the lower moving plate (263) to move up and down synchronously along the guide rod (261) through the rotating rod (241) and the linkage arm (25); S3: After the lower moving plate (263) moves to the bottom, the lower pressing part (2632) contacts the test container (3) and ignites the explosive body; S4: The explosive body explodes inside the test container (3) and the expansion coefficient is collected through the test module (4) outside the test container (3); S5: Rotate the handle (274) to press the right side arm (2633) through the contact plate (275), so that the upper moving plate (262) and the lower moving plate (263) are separated; S6: Take out the test container (3), replace the explosive material inside the test container (3), and reset the test container (3); S7: Rotate the handle (274), the contact plate (275) resets, the upper moving plate (262) and the lower moving plate (263) reconnect, and the next round of testing begins.

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