Impact test protection test device

Abstract

The utility model discloses a protective test device for an impact test, which comprises a base and upright posts positioned at four corners of the base, a protective target is arranged in the middle section of a space defined by the upright posts, and a buffer pad is arranged on the base. The device is simple in structure, safe, reliable, good in anti-impact and anti-splashing effect, capable of being used for tests of different target distances and high in dismounting efficiency, the testing efficiency is improved, the number of tools is reduced, and the manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to an impact test device, in particular to an impact test protection test device. Background Art

[0002] Pressure equipment is a relatively dangerous equipment, but in our daily life, especially in the factory, high-pressure equipment is very common. In the decades of manufacturing pressure equipment in my country, there have been many cases of pressure equipment leakage, parts failure and explosion, with very serious consequences. As a technical research, simulated destruction tests are carried out on pressure equipment to detect the protection needs of joints of different pressure levels and specifications after explosion.

[0003] Generally, for small-scale and low-pressure impact tests, protective devices can be installed by welding on the ground or wall, or by driving anchor bolts, and the impact force is completely borne by the ground foundation or wall. However, the impact kinetic energy of high-pressure (10MPa≤pressure P<100MPa) and ultra-high-pressure (pressure P≥100MPa) tests is very large, which will cause serious damage to the ground foundation or wall, resulting in great economic losses.

[0004] This type of test item is rare in China and there is no effective reference method. Application No. 202210797863.0 discloses an impact test protection device and a foreign object impact test device, which have good noise reduction and protection effects. The impact test protection device includes a base, a side wall, a top wall and an observation window, wherein: the base, the side wall, the observation window and the top wall enclose a first box structure, and the first box structure surrounds the test piece; the side wall is provided with a through hole, the size and position of the through hole are set to allow the foreign object launched by the launch device to pass through, and the interior of the first box structure is connected to the outside only through the through hole; the side wall and the top wall both include a double-layer structure, the double-layer structure includes a protective layer and a noise reduction layer, the protective layer is arranged on the inner side of the noise reduction layer, and is used to block the fragments generated by the impact test; the observation window is arranged on the side wall, and the observation window includes a double-layer bulletproof glass and a vacuum layer, and the vacuum layer is arranged between the double-layer bulletproof glass. This scheme has the following problems: (1) The test mainly simulates the test of an aircraft flying when impacted by foreign objects such as hail, bird strikes, shrapnel, and tire fragments, and mainly solves the safety problems such as serious noise during the impact test. Its structure is relatively complex, and the observation window is equipped with double-layer bulletproof glass and vacuum layer, which directly leads to high manufacturing costs and is not widely used; (2) Only one protective layer is set in the box, which is not suitable for the high-pressure and ultra-high-pressure test environment of this application; (3) The damaged protective layer after the test is not easy to inspect and replace, resulting in low experimental efficiency.

[0005] Therefore, when designing a protective device, we must not only consider the strong impact and destructiveness of the test plug, but also the splash and collision rebound generated when the test plug hits the protective target during the test. Therefore, we must design a low-cost, reasonable structure, safe, reliable, impact-proof, and splash-proof protective device to ensure the normal progress of relevant tests. Summary of the invention

[0006] The purpose of the utility model is to solve the above technical problems and to provide an impact test protection test device which has a simple structure, low production cost, is easy to manufacture, is convenient for inspection after the test, can quickly replace the protection target, and has adjustable protection target position.

[0007] The utility model comprises a base, columns located at four corners of the base, the middle section of the space surrounded by the columns is provided with the protection target, and a buffer pad is provided on the base.

[0008] The bottom surface of the protection target is provided with a movable plate with an observation hole, and the middle section of the column is provided with a plurality of slots along the axial direction, and the movable plate is correspondingly inserted in the slots.

[0009] A fixed plate with an observation hole is also provided below the movable plate, and the fixed plate is fixed on the column.

[0010] It also includes a fixing rod, wherein the upper section of the fixing rod is an elbow section and the lower section is provided with an external thread;

[0011] The elbow portion of the upper section of the fixing rod is pressed on the protection target, and the lower section passes through the movable plate located outside the protection target and is connected to the nut;

[0012] The bent portion of the upper section of the fixing rod is pressed on the protection target, and the lower section passes through the movable plate and the fixing plate located outside the protection target and is connected with a nut.

[0013] A front protective plate is installed on the column in front of the protective target, and a rear protective plate is installed on the column around the buffer pad.

[0014] In view of the problems existing in the background technology, the inventors have made the following improvements:

[0015] (1) A protective target is set in the middle of the space enclosed by the column to directly bear the impact force of the plug. A buffer pad is set on the base to test the buffer protection after the plug rushes out of the protective target, thereby improving the life of the test protection device. The two are set separately to facilitate the inspection and replacement of the protective target and buffer pad after the impact test, thereby improving the test efficiency.

[0016] (2) In order to facilitate the inspection of the experimental effect after the impact and to prevent splashing, a front protective plate is installed on the column in front of the protective target to prevent splashing at the protective target, and a rear protective plate is installed on the column around the buffer pad to prevent splashing at the buffer pad. There is a gap between the two protective plates, which can conveniently observe the damage of the protective target and the buffer pad after the impact; on the other hand, the front and rear protective plates are fixedly connected to the column, which can further enhance the protective strength and rigidity of the column.

[0017] (3) Through the insertion and coordination of the movable plate and multiple slots, the front and rear positions of the protection target on the column can be flexibly set according to needs, so as to control the impact distance of the test object according to the needs of each experiment, and there is no need to hoist the protection test mechanism as a whole, saving time and effort. The vertical height and left and right horizontal position of the protection test mechanism can be further adjusted by adjusting the support to ensure that the test object can hit the center of the protection target as much as possible.

[0018] (4) The function of the fixing rod is to integrally connect the protection target with the movable plate or the fixed plate. Considering the need for disassembly of the protection target, the upper section of the fixing rod is an elbow, and the lower section is provided with an external thread. When connected, the elbow of the upper section of the fixing rod is pressed on the protection target, and the lower section passes through the movable plate located outside the protection target and is connected with the nut, or passes through the movable plate and the fixed plate located outside the protection target and is connected with the nut. In this way, the protection target can be fastened or loosened by rotating the elbow 90 degrees. Without disassembling the fixing rod, the protection target can be conveniently installed and disassembled, thereby improving the test efficiency.

[0019] The utility model has the advantages of simple structure, safety, reliability, good impact resistance and splash resistance, can be used for testing experiments with different target distances, and has high disassembly efficiency, which not only improves the test efficiency but also reduces the number of tooling and saves manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the protection test organization.

[0021] Figure 2 This is a schematic diagram of the movable panel installation.

[0022] Figure 3 Use a state diagram for the fixed rod.

[0023] Among them, 1-base, 2-column, 3-rear protective plate, 4-slot, 5-fixing rod, 5.1-elbow head, 5.2-external thread, 6-movable plate, 7-fixed plate, 8-observation hole, 9-front protective plate, 10-protection target, 11-buffer pad. DETAILED DESCRIPTION

[0024] The utility model is further explained below in conjunction with the accompanying drawings:

[0025] See also Figure 1 The protective shell of the impact test protection test device includes a base 1, columns 2 located at the four corners of the base 1, the protective target 10 is arranged in the middle section of the space surrounded by the columns 2, and a buffer pad 11 is arranged on the base for buffering protection after the test object 10 penetrates the protective target 10, thereby improving the safety performance and service life of the test protection device. A front protective plate 9 is installed on the column in front of the protective target 10, and a rear protective plate 3 is installed on the column around the buffer pad 11.

[0026] See also Figure 2 The bottom surface of the protection target 10 is provided with a movable plate 6 with an observation hole 8, and a fixed plate 7 with an observation hole 8 is also provided below the movable plate 6. The fixed plate 7 is fixed on the column 2 to reinforce the column 2 and withstand the impact force when the protection target 10 is hit. The middle section of the column 2 is provided with a plurality of corresponding slots 4 along the axial direction, and the movable plate 6 is correspondingly inserted in the slots 4. By inserting different slots 4, the movable plate 6 can be placed in different front and rear positions, and the protection target 10 is also moved to a corresponding position accordingly, so that test experiments with different target distances can be carried out.

[0027] See also Figure 3 , and also includes a fixing rod 5, the upper section of the fixing rod 5 is an elbow 5.1, and the lower section is provided with an external thread 5.2; the elbow 5.1 of the upper section of the fixing rod 5 is pressed on the protection target 10, and the lower section passes through the movable plate 6 located outside the protection target 10 (preferably continues to pass through the fixing plate 7) and is connected with a nut, thereby realizing quick connection and fixation between the protection target 10 and the protection shell. In this embodiment, two fixing rods 5 are symmetrically provided.

[0028] During the test, the test object flies toward the protective target 10 under pressure (to simulate the failure, tearing, and then flying out of the test object attached to the pressure-bearing equipment), so that it accurately hits the protective target 10. If the impact kinetic energy of the test object is too large and the protective target 14 is completely broken or penetrated, the test object will stop on the buffer pad 11, ensuring the reliability and safety of the test device.

[0029] After the test plug completes the impact test, check the damage status of the protection target 10 and the buffer pad 11. According to the target distance requirement of the next experiment, readjust the position of the movable plate 6 inserted into the card slot 4, remove the old protection target 10, install the new protection target 10, and conduct the test experiment again.

[0030] See also Figure 3 , the disassembly and assembly process of the protection target 10 is as follows:

[0031] Loosen the nut, rotate the fixing rod 5 90°, so that its elbow part is separated from the surface of the protection target 10, remove the damaged protection target 10, replace it with a new protection target 10, rotate the fixing rod 5 again, so that its elbow part 5.1 is turned to the protection target 10, and tighten the nut. This realizes the installation and disassembly of the protection target 10 without disassembling the connecting device 9, thereby greatly improving the test efficiency.

Claims

1. An impact test protection test device, comprising a base and columns located at four corners of the base, characterized in that: A protective target is provided in the middle section of the space surrounded by the columns, and a buffer pad is provided on the base; a movable plate with an observation hole is provided on the bottom surface of the protective target, and a plurality of slots are provided in the middle section of the columns along the axial direction, and the movable plate is correspondingly inserted in the slots; a front protective plate is installed on the columns in front of the protective target, and a rear protective plate is installed on the columns around the buffer pad.

2. The impact test protection test device according to claim 1, characterized in that: A fixed plate with an observation hole is also provided below the movable plate, and the fixed plate is fixed on the column.

3. The impact test protection test device according to claim 1, characterized in that: It also includes a fixing rod, the upper section of which is an elbow and the lower section is provided with an external thread; the elbow of the upper section of the fixing rod is pressed on the protection target, and the lower section passes through a movable plate located outside the protection target and is connected with a nut.

4. The impact test protection test device according to claim 3, characterized in that: The elbow portion of the upper section of the fixing rod is pressed on the protection target, and the lower section passes through the movable plate and the fixing plate located outside the protection target and is connected with a nut.

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