Impact force test base

Abstract

The utility model discloses an impact force test base, which comprises a base support, a sensor bottom plate arranged at the top of the base support, a sensor shell arranged at the top of the sensor bottom plate, a pressure sensor arranged in the sensor shell, and a pressure sensor arranged at the bottom of the pressure sensor on the sensor bottom plate. The top of the inner side of the sensor shell is provided with a sample lower tool, the sensor shell is provided with a strike column sleeve on the upper side of the sample lower tool, the center of the strike column sleeve is provided with an assembly hole, a strike anvil is arranged in the assembly hole, and a test sample is arranged between the bottom of the strike anvil and the top of the sample lower tool. According to the utility model, the test sample is separated from the pressure sensor, and axial constraint is provided, so that part replacement after oxidation of a metal piece contacted with the energetic sample is facilitated, impact force is all downward after axial constraint, the test result is accurate and reliable, the energetic sample is not contacted with the pressure sensor, the oxidation speed is reduced, and the test efficiency is improved. And the impact anvil, the test sample and the like are prevented from being axially splashed in an unconstrained manner after being impacted.

Description

Technical Field

[0001] This utility model belongs to the field of impact force testing technology, and specifically relates to an impact force testing base. Background Technology

[0002] The safety of energetic materials refers to their susceptibility to combustion or explosion under impact. The "lift-drop method" is typically used to determine the drop height characteristics of samples at 0%, 50%, and 100%. Existing BAM impact sensitivity meters use an all-metal base and lack physical sensors, generally relying on exposure, popping sounds, and smoke for analysis. This method is relatively basic and cannot provide sufficient data for further research. The Instrand 9350 impact testing machine incorporates a pressure sensor on the impact post to accurately measure the mechanical parameters of the test object under puncture. This provides data support for the study of material mechanical properties. However, due to the extremely large impact amplitude, this design on the impact testing machine cannot be used for the impact sensitivity of energetic materials.

[0003] To obtain relevant parameters of impact force, pressure sensors are typically fixed to the metal base of the impactor, and the sample to be tested is placed on the sensor for testing. Although this method can obtain relevant data, the sensor oxidizes rapidly due to the strong oxidizing properties of energetic samples, which reduces the working time and increases the testing cost. Utility Model Content

[0004] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide an impact force testing base.

[0005] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0006] An impact force testing base includes a base support, a sensor base plate mounted on the top of the base support, a sensor housing mounted on the top of the sensor base plate, a pressure sensor mounted inside the sensor housing, the bottom of the pressure sensor mounted on the sensor base plate, a sample lower fixture mounted on the inner top of the sensor housing, an impact pin sleeve mounted on the upper side of the sample lower fixture on the sensor housing, an assembly hole provided in the center of the impact pin sleeve, an anvil mounted in the assembly hole, and a test sample mounted between the bottom of the anvil and the top of the sample lower fixture.

[0007] Furthermore, the sensor housing has an assembly groove on its top, and the lower tooling for the sample is installed within the assembly groove. This structural design facilitates the installation of the lower tooling for the sample.

[0008] Furthermore, a plurality of first screws are installed on both sides of the sensor base plate, and the plurality of first screws are evenly arranged on both sides of the sensor base plate. The sensor base plate is locked to the sensor housing by the first screws. This structural design allows the sensor base plate and the sensor housing to be fixedly connected and installed.

[0009] Furthermore, several second screws are evenly installed on both sides of the bottom of the sensor housing, and the sensor base plate has clearance holes at the corresponding second screw locations. The bottom of the second screw passes through the clearance holes and is locked to the base bracket. This structural design allows the sensor base plate and sensor housing to be fixedly mounted on the base bracket.

[0010] The beneficial effects of this invention are as follows: This invention isolates the test sample and the pressure sensor, and incorporates axial restraint. This facilitates the replacement of oxidized parts of the metal components in contact with the energetic sample, reducing testing costs. Furthermore, with axial restraint, the impact force is entirely downward, resulting in accurate and reliable test results. Simultaneously, the energetic sample does not contact the pressure sensor, reducing its oxidation rate and extending its service life. It also prevents unrestrained axial splashing of the anvil and test sample upon impact, reducing safety hazards. Attached Figure Description

[0011] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0012] Figure 1 This is a schematic diagram of the axial structure of an impact force testing base according to an embodiment of the present invention;

[0013] Figure 2 This is a cross-sectional structural diagram of an impact force testing base according to an embodiment of the present utility model;

[0014] Figure 3 This is a schematic diagram of the exploded structure of an impact force testing base according to an embodiment of the present invention;

[0015] The symbols for the main components are explained below:

[0016] 1. Base bracket; 2. Sensor base plate; 3. Sensor housing; 4. Pressure sensor; 5. Sample lower fixture; 6. Impact pin sleeve; 7. Assembly hole; 8. Impact anvil; 9. Test sample; 10. Assembly groove; 11. First screw; 12. Second screw; 13. Clearance hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Example 1, as Figure 1 , Figure 2 and Figure 3As shown, an impact force testing base has a sensor base plate 2 mounted on the top of the base support 1, a sensor housing 3 mounted on the top of the sensor base plate 2, a pressure sensor 4 mounted inside the sensor housing 3, the bottom of the pressure sensor 4 mounted on the sensor base plate 2, a sample lower fixture 5 mounted on the top inner side of the sensor housing 3, an impact pin sleeve 6 mounted on the upper side of the sample lower fixture 5, an assembly hole 7 provided in the center of the impact pin sleeve 6, an anvil 8 mounted in the assembly hole 7, and a test sample 9 mounted between the bottom of the anvil 8 and the top of the sample lower fixture 5.

[0019] In this embodiment, during assembly, the pressure sensor 4 is positioned and placed inside the sensor housing 3. The sensor housing 3 is then connected to the bottom sensor base plate 2, which completely secures the pressure sensor 4. Next, the sensor assembly installed on top is connected to the base bracket 1. The base bracket 1 can be adjusted and connected to other modules. Then, the lower sample fixture 5 is placed inside the sensor housing 3, and the impact pin sleeve 6 is placed on the lower sample fixture 5. The test sample 9 is placed in the assembly hole 7 of the impact pin sleeve 6, so that it is located on the surface of the lower sample fixture 5. Finally, the anvil 8 is placed on the surface of the test sample 9 and located in the assembly hole 7 of the impact pin sleeve 6, thus completing the assembly.

[0020] In use, the impact force is transmitted to the test sample 9 through the impact anvil 8. The test sample 9 then transmits the force to the lower fixture 5, and finally to the pressure sensor 4. The pressure sensor 4 does not directly contact the energetic sample and can accurately determine the impact force.

[0021] Among them, an axial constraint is designed between the sensor housing 3 and the sample lower tooling 5, so that the impact force can be entirely downward, and the test results are accurate and reliable.

[0022] Example 2, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure to the embodiment 1: the top of the sensor housing 3 is provided with an assembly groove 10, and the sample lower tooling 5 is installed in the assembly groove 10.

[0023] In this embodiment, during assembly, an assembly groove 10 is provided inside the sensor housing 3, which allows the sample lower tooling 5 to be easily installed in the assembly groove 10, achieving the effect of positioning and installation.

[0024] Example 3, as Figure 2 As shown, this embodiment adds the following structure based on embodiment 1: several first screws 11 are installed on both sides of the sensor base plate 2. The several first screws 11 are evenly arranged on both sides of the sensor base plate 2. The sensor base plate 2 is locked to the sensor housing 3 by the first screws 11.

[0025] In this embodiment, during assembly, the sensor base plate 2 and the sensor housing 3 are locked together by the first screw 11. After the sensor base plate 2 and the sensor housing 3 are locked together, the pressure sensor 4 can be completely fixed.

[0026] Example 4, as Figure 2 As shown, this embodiment adds the following structure based on embodiment 1: several second screws 12 are evenly installed on both sides of the bottom of the sensor housing 3, and the sensor base plate 2 is provided with clearance holes 13 at the corresponding second screws 12. The bottom of the second screws 12 passes through the clearance holes 13 and is locked and connected to the base bracket 1.

[0027] In this embodiment, during assembly, after the sensor base plate 2 and the sensor housing 3 are locked together, the sensor is then fixedly mounted on the base bracket 1 by the second screw 12, which achieves the effect of fixed connection and facilitates subsequent use.

[0028] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An impact force testing base, characterized in that: The device includes a base support (1), a sensor base plate (2) is mounted on the top of the base support (1), a sensor housing (3) is mounted on the top of the sensor base plate (2), a pressure sensor (4) is mounted inside the sensor housing (3), the bottom of the pressure sensor (4) is mounted on the sensor base plate (2), a sample lower fixture (5) is mounted on the top inner side of the sensor housing (3), an impact pin sleeve (6) is mounted on the upper side of the sample lower fixture (5) on the sensor housing (3), an assembly hole (7) is provided in the center of the impact pin sleeve (6), an anvil (8) is mounted in the assembly hole (7), and a test sample (9) is mounted between the bottom of the anvil (8) and the top of the sample lower fixture (5).

2. The impact force testing base according to claim 1, characterized in that: The sensor housing (3) has an assembly groove (10) on its top, and the sample lower tooling (5) is installed in the assembly groove (10).

3. The impact force testing base according to claim 2, characterized in that: Several first screws (11) are installed on both sides of the sensor base plate (2). The several first screws (11) are evenly arranged on both sides of the sensor base plate (2). The sensor base plate (2) is locked to the sensor housing (3) by the first screws (11).

4. The impact force testing base according to claim 3, characterized in that: Several second screws (12) are evenly installed on both sides of the bottom of the sensor housing (3). The sensor base plate (2) has a clearance hole (13) at the corresponding second screw (12). The bottom of the second screw (12) passes through the clearance hole (13) and is locked to the base bracket (1).

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