Explosion-proof test tool with good safety

Abstract

The utility model discloses an explosion-proof test tool with good safety, which comprises a test box, a placing table and an adjusting plate are fixedly connected in the test box, the adjusting plate is located below the placing table, four guide through holes are formed in the top end of the adjusting plate, and the top end of the adjusting plate is provided with four guide through holes. And four driven rods are slidably connected to the interiors of the eight guide through holes, and an adjusting rod is slidably connected to the interior of the adjusting plate. The rotating shaft rotates to drive the adjusting gear to rotate, so that the adjusting rod is driven by the adjusting gear to move, the position of the connecting rod is driven to change in the moving process of the adjusting rod, then the driven rod is pushed or pulled to slide in the guide through hole, and the fixing block is shrunk or expanded; the clamping device can clamp and fix detection products of different sizes, and is simple in structure, convenient to adjust and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof devices, in particular to an explosion-proof test tooling with good safety. Background Technique

[0002] An explosion-proof test tooling is a special equipment used to test the explosion-proof performance of equipment or materials under specific conditions. This kind of tooling usually has high safety and functionality, and can simulate the explosion scene in the real environment, so as to evaluate the stability and safety of the object under test under the explosion impact.

[0003] In the prior art, as disclosed in Chinese Patent CN212275914U, an explosion-proof test box is provided, which includes an explosion-proof box body and explosion-proof units. The number of the explosion-proof units is one or more. The explosion-proof unit includes an exhaust fan embedded in the explosion-proof box body, an explosion-proof door rotatably connected to the explosion-proof box body, a locking assembly for locking the explosion-proof door to the explosion-proof box body, and a pressure relief valve embedded in the side wall of the explosion-proof box body. The explosion-proof box body is provided with a test chamber and a wire passing hole communicating with the test chamber. The exhaust fan is used to exhaust the test chamber, and the pressure relief valve is used to relieve the pressure in the test chamber.

[0004] In the above patent, although the exhaust fan is used to exhaust the test chamber, the pressure relief valve is used to relieve the pressure in the test chamber, and the locking assembly firmly locks the explosion-proof door on the explosion-proof box body, so that the explosion-proof performance is good and the safety performance is high, reducing the probability of accidental accidents. However, during the experiment, the experimental articles are directly placed inside the test chamber. If an explosion or other situation occurs to the experimental articles, the explosive articles will directly impact and collide with the inside of the test chamber due to the force generated by their own explosion, which easily causes the internal components to be damaged due to the collision and increases the maintenance cost. Content of the Utility Model

[0005] The purpose of the utility model is to provide an explosion-proof test tooling with good safety to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an explosion-proof test tooling with good safety, including a test box. A placement table and an adjustment plate are fixedly connected inside the test box. The adjustment plate is located below the placement table. Four guiding through holes are opened in both the adjustment plate and the top of the adjustment plate. Four driven rods are slidably connected inside the eight guiding through holes. An adjustment rod is slidably connected inside the adjustment plate. Eight connecting rods are rotatably connected to the outer surface of the adjustment rod. The other ends of the eight connecting rods are respectively rotatably connected to one side of the four driven rods. An adjustment gear is rotatably connected to the inner bottom surface of the test box. The outer surface of the adjustment gear meshes with the outer surface of the adjustment rod. A rotating shaft is fixedly connected to one end of the adjustment gear. Fixed blocks are fixedly connected to the tops of the four driven rods.

[0007] As a further preference of this technical solution, a pressure relief barrel is fixedly connected to the top end of the test chamber. A sealing block is slidably connected to the inner surface of the pressure relief barrel. A pressing spring is fixedly connected to the top end of the sealing block. The other end of the pressing spring is fixedly connected to an adjusting block. The outer surface of the adjusting block is slidably arranged on the inner surface of the pressure relief barrel. A screw rod is rotatably connected to the top end of the adjusting block. The screw rod is engaged with the inside of the pressure relief barrel. An exhaust through hole is formed through the outer surface of the pressure relief barrel and at a position above the sealing block.

[0008] As a further preference of this technical solution, a positioning groove is formed in the inner surface of the pressure relief barrel. Two positioning blocks are fixedly connected to the outer surface of the adjusting block. The outer surfaces of the two positioning blocks are respectively slidably connected to the inside of the two positioning grooves.

[0009] As a further preference of this technical solution, a limiting ring is fixedly connected to the inside of the pressure relief barrel and at the lower edge position. The top end of the limiting ring is in close contact with the bottom end of the sealing block.

[0010] As a further preference of this technical solution, a limiting ring is fixedly connected to the outer surface of the adjusting rod. Limiting plates are fixedly connected to the bottom ends of the four driven rods.

[0011] As a further preference of this technical solution, one end of the rotating shaft penetrates through one side wall inside the test chamber and is fixedly connected to a polygonal connecting rod. A movable ring is sleeved on the outer surface of the polygonal connecting rod. A fixed seat is fixedly connected to one side of the test chamber and at the position of the rotating shaft. One end of the movable ring is inserted into the inside of the fixed seat.

[0012] As a further preference of this technical solution, an explosion-proof door is rotatably connected to the front of the test chamber. Two hook blocks are rotatably connected to one side of the explosion-proof door. Two blocking blocks are fixedly connected to one side of the test chamber. A connecting pipe is fixedly connected to one side of the test chamber. The other end of the connecting pipe is fixedly connected to a pressure gauge.

[0013] The utility model provides an explosion-proof test tooling with good safety, and has the following beneficial effects:

[0014] (1) In the utility model, the rotation of the rotating shaft drives the rotation of the adjusting gear, so that the adjusting rod moves under the drive of the adjusting gear. During the movement of the adjusting rod, the position of the connecting rod changes, and then the driven rod is pushed or pulled to slide in the guiding through hole, so that the fixing block contracts or expands, realizing the clamping and fixing of test products with different sizes. The structure is simple, the adjustment is convenient, and the practicability is high.

[0015] (2) In the utility model, the pressure of the gas generated by the explosion of the product in the test chamber pushes the sealing block to move in the pressure relief barrel. During the movement, the pressing spring is compressed under pressure. When the sealing block moves to the position of the exhaust through-hole and makes the exhaust through-hole communicate with the inside of the test chamber, the excess gas inside the test chamber is discharged from the exhaust through-hole. After the gas is discharged, the pressure inside the test chamber decreases, and the pressing spring restores its elastic deformation to reset the sealing block for re-sealing, realizing the automatic adjustment of the pressure inside the test chamber, effectively avoiding the situation that the test chamber is damaged due to excessive pressure, and improving the safety factor and service life. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the test chamber of the utility model;

[0018] Figure 3 It is an exploded schematic diagram of the structure between the adjusting rod and the driven rod of the utility model;

[0019] Figure 4 It is an exploded schematic diagram of the internal structure of the pressure relief barrel of the utility model.

[0020] In the figure: 1. Test chamber; 2. Placing table; 3. Guide through-hole; 4. Adjusting plate; 5. Driven rod; 6. Adjusting rod; 7. Connecting rod; 8. Adjusting gear; 9. Rotating shaft; 10. Fixed block; 11. Limiting ring; 12. Limiting plate; 13. Fixed seat; 14. Polygonal connecting rod; 15. Movable ring; 16. Pressure relief barrel; 17. Sealing block; 18. Pressing spring; 19. Adjusting block; 20. Screw; 21. Exhaust through-hole; 22. Limiting ring; 23. Positioning groove; 24. Positioning block; 25. Connecting pipe; 26. Pressure gauge; 27. Hook block; 28. Blocking block; 29. Explosion-proof door. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0022] The present utility model provides a technical solution: As Figures 1-3As shown in the figure, in this embodiment, an explosion-proof test tooling with good safety includes a test chamber 1. Inside the test chamber 1, a placement table 2 and an adjustment plate 4 are fixedly connected. The adjustment plate 4 is located below the placement table 2. Four guiding through holes 3 are opened at the top of both the adjustment plate 4 and the adjustment plate 4. Four driven rods 5 are slidably connected inside the eight guiding through holes 3. An adjustment rod 6 is slidably connected inside the adjustment plate 4. Eight connecting rods 7 are rotatably connected to the outer surface of the adjustment rod 6. The other ends of the eight connecting rods 7 are respectively rotatably connected to one side of the four driven rods 5. The bottom surface inside the test chamber 1 is rotatably connected to an adjustment gear 8. The outer surface of the adjustment gear 8 meshes with the outer surface of the adjustment rod 6. One end of the adjustment gear 8 is fixedly connected to a rotating shaft 9. Fixed blocks 10 are fixedly connected to the tops of the four driven rods 5. Among them, by setting the guiding through holes 3, the moving direction of the driven rods 5 can be guided. By setting the connecting rods 7, the driven rods 5 can be pushed or pulled to move during the movement of the adjustment rod 6, so as to realize the positioning of products of different sizes. By setting the adjustment gear 8, the adjustment rod 6 can be driven to move up and down to achieve the adjustment effect.

[0023] As Figure 1 , Figure 2 and Figure 4 shown, a pressure relief barrel 16 is fixedly communicated with the top of the test chamber 1. A sealing block 17 is slidably connected to the inner surface of the pressure relief barrel 16. A pressure resisting spring 18 is fixedly connected to the top of the sealing block 17. The other end of the pressure resisting spring 18 is fixedly connected to an adjustment block 19. The outer surface of the adjustment block 19 is slidably arranged on the inner surface of the pressure relief barrel 16. A screw rod 20 is rotatably connected to the top of the adjustment block 19. The screw rod 20 meshes with the inside of the pressure relief barrel 16. An exhaust through hole 21 is penetrated and opened on the outer surface of the pressure relief barrel 16 and at a position above the sealing block 17. By setting the sealing block 17, it is used to seal the pressure relief barrel 16. By setting the pressure resisting spring 18, a continuous acting force can be provided to the sealing block 17 to ensure its sealing performance. By setting the screw rod 20, the position of the adjustment block 19 can be adjusted, and further the acting force of the pressure resisting spring 18 on the sealing block 17 can be changed to improve the sealing force.

[0024] As Figure 4 shown, a positioning groove 23 is opened on the inner surface of the pressure relief barrel 16. Two positioning blocks 24 are fixedly connected to the outer surface of the adjustment block 19. The outer surfaces of the two positioning blocks 24 are respectively slidably connected to the inside of the two positioning grooves 23, which can position the adjustment block 19 to prevent it from rotating during the adjustment process.

[0025] As Figure 4 shown, a limiting ring 22 is fixedly connected to the inner part of the pressure relief barrel 16 and at the lower edge position. The top of the limiting ring 22 is in close contact with the bottom end of the sealing block 17, which can limit the movement range of the sealing block 17 to prevent it from falling off.

[0026] As Figure 2 andFigure 3 As shown, a limiting ring 11 is fixedly connected to the outer surface of the adjusting rod 6, and limiting plates 12 are fixedly connected to the bottom ends of the four driven rods 5. By providing the limiting ring 11, the movement range of the adjusting rod 6 can be restricted to prevent excessive movement from damaging structures such as the connecting rod 7. By providing the limiting plates 12, the skew of the driven rods 5 during movement can be avoided, improving stability.

[0027] As Figure 3 shown, one end of the rotating shaft 9 penetrates through one side wall inside the test chamber 1 and is fixedly connected to a polygonal connecting rod 14. An activity ring 15 is sleeved on the outer surface of the polygonal connecting rod 14. A fixed seat 13 is fixedly connected to one side of the test chamber 1 at the position of the rotating shaft 9. One end of the activity ring 15 is inserted into the fixed seat 13 for fixing the rotating shaft 9, improving the stability of the fixation.

[0028] As Figure 1 shown, an explosion-proof door 29 is rotatably connected to the front of the test chamber 1. Two hook blocks 27 are rotatably connected to one side of the explosion-proof door 29. Two blocking blocks 28 are fixedly connected to one side of the test chamber 1. A connecting pipe 25 is fixedly connected and communicated to one side of the test chamber 1. The other end of the connecting pipe 25 is fixedly connected and communicated to a pressure gauge 26. By providing the hook blocks 27 and the blocking blocks 28, the explosion-proof door 29 can be prevented from being opened due to the impact force generated by the explosion of the internal product, improving safety. By providing the pressure gauge 26, the internal air pressure can be monitored in real time to prevent air leakage.

[0029] The present utility model provides an explosion-proof test tooling with good safety, and the specific working principle is as follows:

[0030] Place the product to be tested on the placement table 2. Then, pull out the activity ring 15 from the fixed seat 13, rotate the activity ring 15 to drive the rotating shaft 9 to rotate. The rotating shaft 9 drives the adjusting gear 8 to rotate, so that the adjusting rod 6 moves under the drive of the adjusting gear 8. During the movement of the adjusting rod 6, the position of the connecting rod 7 changes, thereby pulling the driven rod 5 to slide in the guiding through hole 3, causing the fixed block 10 to contract and clamping and fixing the test product. During the test, if the product explodes and generates a large amount of gas, the pressure of the gas pushes the sealing block 17 to move in the pressure relief barrel 16. During the movement, the pressure-resistant spring 18 contracts under pressure. When the sealing block 17 moves to the exhaust through hole 21 and makes the exhaust through hole 21 communicate with the inside of the test chamber 1, the excess gas inside the test chamber 1 is discharged from the exhaust through hole 21. After the gas is discharged, the pressure inside the test chamber 1 decreases, and the pressure-resistant spring 18 restores its elastic deformation to reset the sealing block 17 for re-sealing, automatically adjusting the pressure inside the test chamber 1.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof test tool with good safety, comprising a test box (1), characterized in that: The test box (1) is fixedly connected to a placing table (2) and an adjustment plate (4) inside. The adjustment plate (4) is located below the placing table (2). The adjustment plate (4) and the top of the adjustment plate (4) are each provided with four guide through holes (3). Four driven rods (5) are slidably connected inside the eight guide through holes (3). An adjustment rod (6) is slidably connected inside the adjustment plate (4). The outer surface of the adjustment rod (6) is rotatably connected to eight connecting rods (7). The other ends of the eight connecting rods (7) are respectively rotatably connected to one side of the four driven rods (5). An adjustment gear (8) is rotatably connected to the bottom surface of the test box (1). The outer surface of the adjustment gear (8) is meshed with the outer surface of the adjustment rod (6). One end of the adjustment gear (8) is fixedly connected to a rotating shaft (9). The tops of the four driven rods (5) are fixedly connected to fixed blocks (10).

2. The explosion-proof test tool with good safety according to claim 1, characterized in that: The top of the test box (1) is fixedly connected to a pressure relief barrel (16), the inner surface of the pressure relief barrel (16) is slidably connected to a sealing block (17), the top of the sealing block (17) is fixedly connected to a pressure spring (18), the other end of the pressure spring (18) is fixedly connected to an adjustment block (19), the outer surface of the adjustment block (19) is slidably arranged with the inner surface of the pressure relief barrel (16), the top of the adjustment block (19) is rotatably connected to a screw rod (20), the screw rod (20) is meshed with the inside of the pressure relief barrel (16), and an exhaust hole (21) is opened through the outer surface of the pressure relief barrel (16) and located above the sealing block (17).

3. The explosion-proof test tool with good safety according to claim 2, characterized in that: A positioning groove (23) is provided on the inner surface of the pressure relief barrel (16); two positioning blocks (24) are fixedly connected to the outer surface of the adjustment block (19); and the outer surfaces of the two positioning blocks (24) are slidably connected to the inside of the two positioning grooves (23) respectively.

4. The explosion-proof test tool with good safety according to claim 3, characterized in that: A limiting ring (22) is fixedly connected inside the pressure relief barrel (16) and at the lower edge thereof, and the top end of the limiting ring (22) is in close contact with the bottom end of the sealing block (17).

5. The explosion-proof test tool with good safety according to claim 1, characterized in that: A limiting ring (11) is fixedly connected to the outer surface of the adjusting rod (6), and a limiting plate (12) is fixedly connected to the bottom ends of the four driven rods (5).

6. The explosion-proof test tool with good safety according to claim 1, characterized in that: One end of the rotating shaft (9) passes through a side wall of the interior of the test box (1) and is fixedly connected to a polygonal connecting rod (14); a movable ring (15) is sleeved on the outer surface of the polygonal connecting rod (14); a fixing seat (13) is fixedly connected to one side of the test box (1) at the position of the rotating shaft (9); one end of the movable ring (15) is plugged into the interior of the fixing seat (13).

7. The explosion-proof test tool with good safety according to claim 6, characterized in that: The front side of the test box (1) is rotatably connected to an explosion-proof door (29), one side of the explosion-proof door (29) is rotatably connected to two hook blocks (27), one side of the test box (1) is fixedly connected to two blocking blocks (28), one side of the test box (1) is fixedly connected to a connecting pipe (25), and the other end of the connecting pipe (25) is fixedly connected to a pressure gauge (26).

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