Switching device for initiating explosive device rotating arm type steady-state acceleration testing machine

Abstract

The utility model discloses a switching device for a tumbler type steady-state acceleration testing machine of an initiating explosive device, which comprises a switching device body provided with a mounting hole connected with the tumbler type steady-state acceleration testing machine. The switching device body is an independent flat plate and is rigidly fixed with the initiating explosive device rotating arm type steady-state acceleration testing machine through a mounting hole, meanwhile, threaded holes with the interval of 100mm and threaded holes distributed in the circumferences with the diameters of 4 inches and 8 inches are machined in the switching device body, and the threaded holes are in central symmetry and consistent with the center of the switching device body; the vibration and impact test tool clamp is connected with a vibration and impact tool clamp containing an initiating explosive device sample through the threaded hole, the vibration and impact test tool clamp can be connected to an acceleration test table face, frequent disassembly of the tested initiating explosive device sample is avoided, an acceleration test can be rapidly completed, and the acceleration test efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and in particular relates to a switching device for a rotating arm steady-state acceleration testing machine for pyrotechnic devices. Background Art

[0002] With the development of science and technology, the diversity of mechanical testing equipment has been continuously expanded. The installation holes of vibration testing equipment, impact testing equipment, and acceleration testing equipment are varied. When conducting tests, pyrotechnic samples need to be fixed on test fixtures dedicated to different testing equipment, which will inevitably affect the test efficiency.

[0003] In related technologies, when using a rotating arm steady-state acceleration testing machine to conduct acceleration experiments, because the mounting hole positions are different from those of other mechanical testing equipment, it is necessary to redesign and process the test tooling. First, the pyrotechnic sample must be fixed on a special acceleration test fixture, and then the fixture must be fixed on the acceleration testing machine. The centrifuge must be rotated before the test can be carried out.

[0004] Regarding the above-mentioned related technologies, the following technical defects exist: when using a rotating arm steady-state acceleration testing machine to conduct acceleration experiments, it is necessary to first design and process special acceleration fixtures, which increases the design time and increases the test cost; the pyrotechnic product samples need to be disassembled and re-clamped, and clamping must be performed multiple times. The cumbersome operation increases the test process and reduces the test efficiency. Utility Model Content

[0005] The utility model provides an adapter device for a pyrotechnic device rotary arm steady-state acceleration tester, and aims to solve the problem that the tooling fixture in the prior art cannot be used universally in different test equipment and the test process requires multiple disassembly and re-clamping.

[0006] In order to solve the above technical problems, the utility model provides an adapter device for a pyrotechnic rotating arm steady-state acceleration testing machine, which is characterized in that it includes: an adapter device body; the adapter device body is provided with a mounting hole for connecting to the pyrotechnic rotating arm steady-state acceleration testing machine; the adapter device body is connected to a vibration and impact fixture equipped with a pyrotechnic sample through a threaded hole.

[0007] Furthermore, the adapter body is provided with a plurality of threaded holes, and the threaded holes are centrally symmetrical and consistent with the center of the adapter body.

[0008] Furthermore, the threaded holes on the adapter body are respectively located on circles with diameters of 4 inches and 8 inches and centered on the center of the adapter body.

[0009] Furthermore, the adapter body is a rigid structure made of aluminum alloy material.

[0010] Furthermore, the adapter body has a height of less than 50 mm and is provided with a weight-reducing groove.

[0011] Furthermore, the mounting hole (11) is a countersunk hole.

[0012] Furthermore, the weight-reducing grooves (13) are provided at the four corners of the adapter body (1).

[0013] Furthermore, the adapter body (1) is locked to the rotary arm type steady-state acceleration testing machine through the mounting holes (11) using bolts and nuts.

[0014] Furthermore, a vibration and impact test fixture (34) containing a pyrotechnic sample (35) is fixed to the adapter body (1) by bolts through the threaded holes (12).

[0015] Furthermore, the vibration and impact test fixture together with the pyrotechnic sample is rotated 90° each time to complete the acceleration test of the pyrotechnic sample in 4 test directions. The vibration and impact test fixture together with the pyrotechnic sample is rotated 90° in the opposite direction to complete the acceleration test of the other 2 test directions of the pyrotechnic sample.

[0016] Beneficial Effects: This utility model allows the use of test fixtures for vibration and impact test equipment with fixed metric and imperial spacing on acceleration test equipment. This saves design time and reduces test fixture costs. The adapter device saves time during the multiple disassembly and assembly of pyrotechnic samples during acceleration testing, while ensuring the consistency of the tested product's installation state, improving acceleration test efficiency and ensuring reliability. The fixture is easy to manufacture, has low processing costs, and reduces testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the utility model;

[0019] Figure 3 This is the connection diagram of the utility model

[0020] In the figure, 1. Adapter body, 11. Mounting hole, 12. Threaded hole, 13. Weight-reducing groove, 31. Rotating arm, 32. M22 bolt, 33. M12 bolt, 34. Vibration and impact test fixture, 35. Explosive device sample. DETAILED DESCRIPTION

[0021] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation methods of the present invention are further described in detail below.

[0022] The utility model proposes an adapter device for a pyrotechnic rotating arm steady-state acceleration testing machine, comprising an adapter device body 1, on which is provided a mounting hole 11 connected to the rotating arm of the rotating arm steady-state acceleration testing machine; the adapter device body is a separate flat plate, which is rigidly fixed to the rotating arm of the pyrotechnic rotating arm steady-state acceleration testing machine through the mounting hole, and at the same time, threaded holes 12 with an interval of 100 mm and threaded holes distributed on circles with a diameter of 4 inches and 8 inches are processed on the adapter device body, and the threaded holes are centrally symmetrical and consistent with the center of the adapter device body, and are connected to a vibration and impact fixture 34 equipped with pyrotechnic samples through the threaded holes, so that the vibration and impact test fixture can be connected to the acceleration test table, avoiding frequent disassembly of the pyrotechnic samples under test, and can quickly complete the acceleration test, thereby improving the efficiency of the acceleration test.

[0023] The adapter body is a rigid structure made of aluminum alloy, with a height of less than 50 mm and provided with weight-reducing grooves. The weight-reducing grooves (13) are provided at the four corners of the adapter body (1), which not only reduces the weight of the adapter body (1) but also facilitates transportation.

[0024] The center of the adapter body (1) coincides with the centrally located mounting hole (11) and threaded hole (12).

[0025] The following describes the pyrotechnic device rotating arm steady-state acceleration testing machine adapter device proposed by the present invention in conjunction with the embodiments.

[0026] 1) Use M22 bolts 32 and nuts of appropriate length to secure the adapter body 1 to the rotating arm 31 of the pyrotechnic device rotating arm steady-state acceleration testing machine through the mounting hole 11;

[0027] 2) The pyrotechnic sample 35 already mounted on the vibration or impact test fixture does not need to be removed. The vibration or impact test fixture 34 with the pyrotechnic sample 35 can be directly connected to the adapter body 1 using an M12 screw 33 of appropriate length through the threaded hole 12. The threaded hole 12 is not only suitable for installing a vibration or impact test fixture 34 with fixed metric spacing, but can also be connected to a vibration or impact test fixture 34 with fixed imperial spacing. This eliminates the need to disassemble and assemble the pyrotechnic sample 35, improves testing efficiency, fully utilizes different types of fixtures, and reduces fixture design time and the processing cost of acceleration-specific fixtures.

[0028] 3) The pyrotechnic sample 35 to be tested is rigidly fixed on the vibration and impact test fixture 34, and the fixture is fixed by the adapter body 1. The vibration and impact test fixture 34 and the product are rotated 90° each time to complete the acceleration test of the 4 test directions of the tested product. The vibration and impact test fixture 34 and the pyrotechnic sample 35 are rotated 90° in the opposite direction to complete the acceleration test of the other 2 test directions of the pyrotechnic sample 35. In this way, the test requirements of the three-axis and six-direction acceleration test of the pyrotechnic sample 35 can be met.

[0029] 4) Start the pyrotechnic device rotating arm steady-state acceleration testing machine, and after a certain period of time, test the accelerated pyrotechnic device sample.

[0030] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A switching device for a pyrotechnic device rotating arm steady-state acceleration testing machine, characterized in that: include: The adapter body is provided with a mounting hole for connecting to a rotary arm steady-state acceleration testing machine; The adapter body is connected to a vibration and impact fixture containing an pyrotechnic sample through a threaded hole; the adapter body is provided with a plurality of threaded holes, and the threaded holes are centrally symmetrical and consistent with the center of the adapter body.

2. The adapter device for the pyrotechnic device rotating arm steady-state acceleration testing machine according to claim 1, characterized in that: The vibration and impact test fixture, together with the pyrotechnic sample, is installed by rotating 90° each time to complete the acceleration test of the pyrotechnic sample in four test directions. The vibration and impact test fixture, together with the pyrotechnic sample, is installed by rotating 90° in the opposite direction to complete the acceleration test of the other two test directions of the pyrotechnic sample.

3. The adapter device for the pyrotechnic device rotating arm steady-state acceleration testing machine according to claim 1, characterized in that: The threaded holes on the adapter body are respectively located on circles with diameters of 4 inches and 8 inches, with the center of the adapter body as the center.

4. The adapter device for the pyrotechnic device rotating arm steady-state acceleration testing machine according to claim 1, characterized in that: The adapter body is a rigid structure made of aluminum alloy.

5. The adapter device for the pyrotechnic device rotary arm steady-state acceleration testing machine according to claim 1, characterized in that: The adapter body has a height of less than 50 mm and is provided with a weight-reducing groove.

6. The adapter device for the pyrotechnic device rotary arm steady-state acceleration testing machine according to claim 1, characterized in that: The mounting hole (11) is a countersunk hole.

7. The adapter device for the pyrotechnic device rotary arm steady-state acceleration testing machine according to claim 5, characterized in that: The weight-reducing grooves (13) are arranged at the four corners of the adapter body (1).

8. The adapter device for the pyrotechnic device rotating arm steady-state acceleration testing machine according to claim 1, characterized in that: The adapter body (1) is locked with the rotary arm type steady-state acceleration testing machine through the mounting holes (11) of bolts and nuts.

9. The adapter device for the pyrotechnic device rotating arm steady-state acceleration testing machine according to claim 1, characterized in that: A vibration and impact test fixture (34) containing an ignition device sample (35) is fixed to the adapter body (1) by means of bolts through threaded holes (12).

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