Auxiliary device for detecting explosion-proof electrical equipment

Abstract

The utility model provides an auxiliary device for detecting explosion-proof electrical equipment, which relates to the field of electrical test equipment and comprises a lower machine table, an upper machine table fixedly arranged at the top end of the lower machine table, an impactor arranged at the bottom of the upper machine table and used for carrying out an impact test on the explosion-proof electrical equipment, and a buffer mechanism movably and fixedly arranged in the lower machine table. The top end of the buffer mechanism is in sliding connection with the bottom of the impactor, the bottom of the impactor extends into the lower machine table in a sliding mode, and when the impactor conducts an impact test on the anti-explosion electrical equipment and exerts impact force on the movable assembly and the connecting assembly, the falling impactor inclines to a certain degree due to the anti-explosion electrical equipment. When the impact force borne by the movable assembly is larger, the impactor drives the movable assembly to move downwards, the movable assembly extrudes the damping liquid in the movable groove, the pressure intensity of the damping liquid in the movable groove changes, the damping liquid is driven to flow upwards, and friction force can be generated when the damping liquid passes through the movable assembly; and the impact force of the impactor can be relieved.

Description

Technical Field

[0001] The utility model relates to the field of electrical testing equipment, in particular to an auxiliary device for detecting explosion-proof electrical equipment. Background Technique

[0002] Explosion-proof electrical equipment refers to electrical equipment designed to operate safely in an environment where explosive gases, vapors, dusts or fibers exist. After the explosion-proof electrical equipment is produced in the factory, it needs to be sampled and tested. Only after testing the explosion-proof electrical equipment with an auxiliary device for testing can the explosion-proof electrical equipment products be sold on the market.

[0003] The existing auxiliary device for testing basically consists of an upper machine table and a lower machine table. An impactor for impacting the explosion-proof electrical equipment product is provided at the bottom of the upper machine table. The staff places the explosion-proof electrical equipment product in the lower machine table and limits the product to be tested. Subsequently, the staff starts the equipment, and the impactor on the upper machine table drops, so that the impactor applies an impact force to the explosion-proof electrical equipment on the lower machine table at a controllable speed and strength, simulating the extreme physical impact that may be encountered in the actual working condition, so as to test the structural integrity and explosion-proof performance of the equipment, and ensure its reliability and safety in a harsh environment. The existing auxiliary device for testing usually has two shock damping devices inside the lower machine table. Through the shock damping devices, when the test object is relatively fragile, the peak value of the impact force directly acting on the lower machine table and the equipment to be tested can be effectively alleviated, thus avoiding equipment damage or test result distortion that may be caused by excessive impact force. However, due to the influence of the explosion-proof electrical equipment under test, and to ensure the normal movement of the impactor, there will be an intermittent gap at the connection between the impactor and the upper machine table. This intermittent gap will cause the impactor to shift horizontally under the influence of the explosion-proof electrical equipment product, and then cause the impact force received by one of the shock damping devices to be greater than that of the other shock damping device. This not only affects the uniform distribution of the impact force, but also causes the individual shock damping device to receive the impact force released instantaneously, thereby reducing the controllability and safety of the entire impact test process.

[0004] Therefore, it is necessary to provide a new auxiliary device for detecting explosion-proof electrical equipment to solve the above technical problems. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides an auxiliary device for detecting explosion-proof electrical equipment.

[0006] The auxiliary device for detecting explosion-proof electrical equipment provided by the utility model comprises a lower machine table, a upper machine table is fixedly arranged at the top end of the lower machine table, an impactor for performing impact test on the explosion-proof electrical equipment is arranged at the bottom of the upper machine table, a buffer mechanism is movably fixed inside the lower mechanism, the top end of the buffer mechanism is slidably connected with the bottom of the impactor, and the bottom of the impactor slidably extends into the lower machine table;

[0007] The buffer mechanism comprises a movable component, a movable groove is formed inside the lower machine table, two partition plates are fixedly arranged inside the movable groove, a plurality of flow grooves are respectively formed on one side of the two partition plates, the movable component is slidably arranged inside the movable groove, the top end of the movable component slidably extends out of the movable groove, the top end of the movable component is slidably connected with the bottom of the impactor, a connecting component is slidably arranged on one side of the movable groove far away from the movable component, the top end of the connecting component slidably extends out of the movable groove, the top end of the connecting component is slidably connected with the bottom of the impactor, and damping liquid is filled inside the movable groove.

[0008] Preferably, the movable component comprises a movable plate, the movable plate is slidably arranged inside the movable groove, a movable block is fixedly arranged at the top end of the movable plate, the top end of the movable block slidably extends out of the movable groove, and the top end of the movable block is slidably connected with the bottom of the impactor.

[0009] Preferably, a plurality of circular grooves are formed at the bottom of the movable plate, and two first springs are fixedly arranged at the bottom of the movable plate, and the bottoms of the two first springs are fixedly connected with the inside of the movable groove.

[0010] Preferably, the connecting component comprises a connecting plate, the connecting plate is slidably arranged on one side of the movable groove far away from the movable plate, a connecting block is fixedly arranged at the top end of the connecting plate, the top end of the connecting block slidably extends out of the movable groove, and the top end of the connecting block is slidably connected with the bottom of the impactor.

[0011] Preferably, a plurality of connecting grooves are formed at the bottom of the connecting plate, and two second springs are fixedly arranged at the bottom of the connecting plate, and the bottoms of the two second springs are fixedly connected with the inside of the movable groove.

[0012] Preferably, sealing gaskets are slidably sleeved on the outer surfaces of the movable block and the connecting block, and the bottoms of the two sealing gaskets are fixedly connected with the top end of the lower machine table.

[0013] Compared with the related art, the auxiliary device for detecting explosion-proof electrical equipment provided by the utility model has the following beneficial effects:

[0014] When the impactor conducts an impact test on the explosion-proof electrical equipment, when the impactor exerts an impact force on the movable component and the connecting component, due to the explosion-proof electrical equipment, the falling impactor is inclined to a certain extent, making the impact force received by the movable component greater. Then the impactor drives the movable component to move downward, squeezing the damping fluid inside the movable groove, causing a change in the pressure of the damping fluid inside the movable groove, and driving the damping fluid to flow upward. When the damping fluid passes through the movable component, friction will be generated, and this friction will slow down the impact force of the impactor. At the same time, the movable component will drive part of the damping fluid to flow through the partition plate towards the connecting component. When this part of the damping fluid enters the other side of the movable groove through the flow-through groove of the partition plate, the friction of the damping fluid passing through the flow-through groove will slow down the impact force of the impactor through the movable component. When this part of the damping fluid reaches the side of the movable component near the connecting component, it will increase the amount of damping fluid inside the movable groove on one side of the connecting component, enabling the connecting component to contact the damping fluid faster. The connecting component, under the drive of the driver, squeezes the damping fluid inside the movable groove, causing a change in the pressure of the damping fluid inside the movable groove, and making the damping fluid flow upward above the connecting component. When the damping fluid flows past the connecting component, friction will be generated, and this friction will slow down the impact force of the impactor again. Through this structure, it is ensured that the impact of the impactor can be gradually consumed rather than released instantaneously, thus significantly improving the controllability and safety of the entire impact test process. Description of the Drawings

[0015] Figure 1 Schematic diagram of the overall structure of the auxiliary device for detecting explosion-proof electrical equipment provided by the present utility model;

[0016] Figure 2 is Figure 1 Schematic diagram of the structure of the lower machine table shown in;

[0017] Figure 3 is Figure 2 Schematic diagram of the sectional structure shown in;

[0018] Figure 4 is Figure 3 Schematic diagram of the structure of the buffer mechanism shown in.

[0019] Reference numerals in the figure: 1, lower machine table; 2, upper machine table; 3, movable groove; 4, partition plate; 5, flow-through groove; 6, movable plate; 7, movable block; 8, circular groove; 9, first spring; 10, connecting plate; 11, connecting block; 12, connecting groove; 13, second spring; 14, sealing gasket; 15, impactor. Detailed Embodiment

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Please refer toFigure 1 , Figure 2 , Figure 3 and Figure 4 , where Figure 1 is the overall structural schematic diagram of the auxiliary device for detecting explosion-proof electrical equipment provided by the present utility model; Figure 2 is Figure 1 the structural schematic diagram of the lower machine table shown in; Figure 3 is Figure 2 the sectional structural schematic diagram shown in; Figure 4 is Figure 3 the structural schematic diagram of the buffer mechanism shown in.

[0022] In the specific implementation process, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, an auxiliary device for detecting explosion-proof electrical equipment includes a lower machine table 1. A upper machine table 2 is fixedly provided at the top of the lower machine table 1. An impactor 15 for performing an impact test on the explosion-proof electrical equipment is provided at the bottom of the upper machine table 2. A buffer mechanism is movably fixed inside the lower mechanism. The top of the buffer mechanism is slidably connected to the bottom of the impactor 15. The bottom of the impactor 15 slidably extends into the lower machine table 1. The buffer mechanism includes a movable component. An activity groove 3 is opened inside the lower machine table 1. Two partition plates 4 are fixedly provided inside the activity groove 3. A plurality of flow grooves 5 are respectively opened on one side of the two partition plates 4. The movable component is slidably arranged inside the activity groove 3. The top of the movable component slidably extends out of the activity groove 3. The top of the movable component is slidably connected to the bottom of the impactor 15. A connecting component is slidably arranged on the side of the activity groove 3 away from the movable component. The top of the connecting component slidably extends out of the activity groove 3. The top of the connecting component is slidably connected to the bottom of the impactor 15. The activity groove 3 is filled with damping liquid.

[0023] The movable component includes a movable plate 6. The movable plate 6 is slidably arranged inside the activity groove 3. A movable block 7 is fixedly provided at the top of the movable plate 6. The top of the movable block 7 movably extends out of the activity groove 3. The top of the movable block 7 is slidably connected to the bottom of the impactor 15. A plurality of circular grooves 8 are opened at the bottom of the movable plate 6. Two first springs 9 are fixedly provided at the bottom of the movable plate 6. The bottoms of the two first springs 9 are fixedly connected to the inside of the activity groove 3. The connecting component includes a connecting plate 10. The connecting plate 10 is slidably arranged inside the activity groove 3 on the side away from the movable plate 6. A connecting block 11 is fixedly provided at the top of the connecting plate 10. The top of the connecting block 11 slidably extends out of the activity groove 3. The top of the connecting block 11 is slidably connected to the bottom of the impactor 15. A plurality of connecting grooves 12 are opened at the bottom of the connecting plate 10. Two second springs 13 are fixedly provided at the bottom of the connecting plate 10. The bottoms of the two second springs 13 are fixedly connected to the inside of the activity groove 3. Sealing gaskets 14 are slidably sleeved on the outer surfaces of the movable block 7 and the connecting block 11. The bottoms of the two sealing gaskets 14 are fixedly connected to the top of the lower machine table 1.

[0024] By means of the connecting block 11 and the gasket 14 sleeved on the outer surface of the movable block 7, the leakage of the damping liquid inside the movable groove 3 can be effectively prevented. When part of the damping liquid enters the other side of the movable groove 3 through the flow groove 5 of the partition plate 4, the frictional force generated by the damping liquid passing through the flow groove 5 can effectively slow down the impact force of the impactor 15, providing more accurate and reliable experimental conditions for the impact test of explosion-proof electrical equipment and ensuring the accuracy of the test results and the structural safety of the equipment.

[0025] The working principle provided by the present utility model is as follows: When the impactor 15 conducts an impact test on the explosion-proof electrical equipment, when the impactor 15 exerts an impact force on the movable block 7 and the connecting block 11, due to the explosion-proof electrical equipment, the falling impactor 15 is inclined to a certain extent, so that when the impact force received by the movable block 7 is greater, the impactor 15 drives the movable plate 6 to move downward through the movable block 7, causing the movable plate 6 to squeeze the damping liquid inside the movable groove 3, changing the pressure of the damping liquid inside the movable groove 3, and driving the damping liquid to flow upward through the circular groove 8 of the movable plate 6. When the damping liquid passes through the circular groove 8, a frictional force will be generated, which will slow down the impact force of the impactor 15. At the same time, the movable plate 6 will drive part of the damping liquid to flow towards the connecting plate 10 through the partition plate 4. When this part of the damping liquid enters the other side of the movable groove 3 through the flow groove 5 of the partition plate 4, the frictional force generated by the damping liquid passing through the flow groove 5 will slow down the impact force of the impactor 15. When this part of the damping liquid reaches the side of the movable groove 3 near the connecting plate 10, the quantity of the damping liquid inside the movable groove 3 on one side of the connecting plate 10 will increase, enabling the connecting plate 10 to contact the damping liquid faster. The connecting block 11 drives the connecting plate 10 to squeeze the damping liquid inside the movable groove 3 under the drive of the driver, changing the pressure of the damping liquid inside the movable groove 3, and causing the damping liquid to flow upward above the connecting groove 12 of the connecting plate 10. When the damping liquid flows through the connecting groove 12, a frictional force will be generated, which will slow down the impact force of the impactor 15 again.

[0026] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0027] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. An auxiliary device for detecting explosion-proof electrical equipment, characterized in that: The invention comprises a lower machine platform (1), wherein an upper machine platform (2) is fixedly provided at the top of the lower machine platform (1), an impactor (15) for performing an impact test on explosion-proof electrical equipment is provided at the bottom of the upper machine platform (2), a buffer mechanism is movably fixedly provided inside the lower mechanism, the top of the buffer mechanism is slidably connected to the bottom of the impactor (15), and the bottom of the impactor (15) slidably extends into the interior of the lower machine platform (1); The buffer mechanism comprises a movable component, a movable groove (3) is provided inside the lower machine table (1), two partition plates (4) are fixedly provided inside the movable groove (3), a plurality of flow grooves (5) are respectively provided on one side of the two partition plates (4), the movable component is slidably provided inside the movable groove (3), the top end of the movable component slides out of the movable groove (3), the top end of the movable component is slidably connected to the bottom of the impactor (15), a connecting component is slidably provided on the side of the movable groove (3) away from the movable component, the top end of the connecting component slides out of the movable groove (3), the top end of the connecting component is slidably connected to the bottom of the impactor (15), and the movable groove (3) is filled with damping fluid.

2. The auxiliary device for detecting explosion-proof electrical equipment according to claim 1, characterized in that: The movable assembly comprises a movable plate (6), the movable plate (6) is slidably arranged inside the movable groove (3), a movable block (7) is fixedly arranged on the top of the movable plate (6), the top of the movable block (7) movably extends out of the movable groove (3), and the top of the movable block (7) is slidably connected to the bottom of the impactor (15).

3. The auxiliary device for detecting explosion-proof electrical equipment according to claim 2, characterized in that: The bottom of the movable plate (6) is provided with a plurality of circular grooves (8), and two first springs (9) are fixedly provided at the bottom of the movable plate (6), and the bottoms of the two first springs (9) are fixedly connected to the inside of the movable groove (3).

4. The auxiliary device for detecting explosion-proof electrical equipment according to claim 3, characterized in that: The connection assembly comprises a connection plate (10), the connection plate (10) being slidably arranged inside the movable groove (3) on a side away from the movable plate (6), a connection block (11) being fixedly arranged on the top of the connection plate (10), the top of the connection block (11) slidingly extending out of the movable groove (3), and the top of the connection block (11) being slidably connected to the bottom of the impactor (15).

5. The auxiliary device for detecting explosion-proof electrical equipment according to claim 4, characterized in that: The bottom of the connecting plate (10) is provided with a plurality of connecting grooves (12), and two second springs (13) are fixedly provided at the bottom of the connecting plate (10), and the bottoms of the two second springs (13) are fixedly connected to the inside of the movable groove (3).

6. The auxiliary device for detecting explosion-proof electrical equipment according to claim 5, characterized in that: The sliding sleeves on the outer surfaces of the movable block (7) and the connecting block (11) are provided with sealing pads (14), and the bottoms of the two sealing pads (14) are fixedly connected to the top of the lower machine platform (1).

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