Airbag air tightness testing device and quality inspection method

Abstract

The invention discloses a safety air bag airtightness testing device and a quality inspection method, and relates to the technical field of air bag testing devices.The safety air bag airtightness testing device comprises a bottom plate, a water storage tank is fixedly mounted at the upper end of the bottom plate and is made of a transparent material, mounting frames are mounted on the two sides of the upper end of the bottom plate, and the mounting frames are located above the water storage tank; a self-locking type multi-section hydraulic push rod is installed at the upper end of the installation frame, an installation assembly is installed at the lower end of the self-locking type multi-section hydraulic push rod, an inflation assembly is connected to the installation assembly in a clamped mode, a safety air bag body is installed at the lower end of the inflation assembly, and an adjustable pushing and pressing assembly is fixedly installed at the lower end of the interior of the water storage tank. The air bag restraint system body is immersed in water for testing, the air tightness can be visually judged according to whether bubbles are generated in water or not, so that the accuracy of the testing structure is improved, meanwhile, different positions of the air bag restraint system body can be pushed and pressed through the adjustable pushing and pressing assembly, the stress condition is simulated, and the testing result is more accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of airbag testing devices, and in particular relates to a safety airbag air tightness testing device and a quality inspection method. Background Art

[0002] Airbags are also called auxiliary inflatable restraint systems or airbag systems. Airbags are a passive personal safety protection system. At the moment of a vehicle collision, airbags can quickly inflate to form a soft air cushion to protect occupants from secondary collisions or prevent direct collisions between occupants and internal components of the vehicle, thereby reducing the degree of injury to occupants in the accident. When a vehicle collides or emergency brakes, airbags can quickly inflate to provide a protective barrier for occupants, reducing the damage caused by the occupants' forward impact due to inertia. At the same time, the design of airbags can absorb part of the collision energy and disperse it to a larger area, thereby reducing the impact force on the occupants and reducing injuries. The airtightness of airbags needs to be tested during production to ensure that the airbags can be quickly and fully inflated when needed to provide effective protection for the occupants. A test device is required during testing.

[0003] As shown in the announcement number: CN115200808A, an airtightness test device and method for an airbag, the device at least includes: a frame; a test bench, which is arranged in the frame, and the test bench has a plurality of test cavities whose space size can be adjusted according to the size of the airbag; a pressure gauge, which is arranged one-to-one corresponding to the test cavities and is suitable for performing airtightness tests on the airbags in the test cavities. The airtightness test device for an airbag provided by the present invention has a test bench with a plurality of test cavities whose space size can be adjusted, so that it can adapt to airbags of different sizes and shapes, and has better compatibility; and during the test, the airbags are located in different test cavities, which can avoid mutual interference and have stronger applicability; and the pressure in the airbag is detected by the pressure gauge, which is more convenient to operate.

[0004] Another example is the announcement number: CN219641195U, a rubber airbag air tightness test device, which relates to the field of airbag air tightness detection technology, including a work box, a signal receiver is arranged on the top of the work box, an alarm light is arranged on the side of the top of the work box away from the signal receiver, a U-shaped placement table is arranged on the inner bottom surface of the work box, a clamping mechanism is arranged inside the work box, a clamping plate is fixedly installed on the side of the connecting rod away from the slide plate, and a sponge layer is fixedly installed on the side wall of the spring. When testing, the staff first places the airbag filled with air in the groove on the top of the U-shaped placement table, and uses the anti-slip handle to pull the telescopic column to both sides through the provided clamping mechanism, thereby driving the telescopic column to slide inside the telescopic cylinder. The slide plate will be pulled to both sides due to the action of the spring, and then the clamping plate is driven to pull to both sides through the connecting rod to clamp the airbag to be tested, and the sponge layer can protect the surface of the airbag to reduce friction.

[0005] However, the above-mentioned testing device only judges the air tightness by the indication of the pressure gauge during the test. However, for the airbag with slightly poor air tightness, the change of the indication in a short period of time is small, so it is easy to cause misjudgment and inaccurate test results. At the same time, the above-mentioned testing device only tests when there is no external force. However, the airbag will be subjected to force when in use. Therefore, it is impossible to test the air tightness of the airbag when subjected to force. In view of this, the present invention is specially proposed. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and provide an airbag air tightness testing device and quality inspection method, which have the advantages of accurate test results and the ability to test under stress. The airbag body is tested by immersing it in water, and the air tightness can be intuitively judged by whether bubbles are generated in the water, thereby improving the accuracy of the test structure. At the same time, the airbag body can be pushed at different positions through an adjustable pushing assembly, thereby simulating the situation under stress, making the test results more accurate.

[0007] The present invention achieves the above-mentioned purpose through the following technical scheme: an air-tightness testing device and quality inspection method for an airbag, comprising a base plate, a water tank being fixedly mounted on the upper end of the base plate, the water tank being made of a transparent material, and mounting frames being mounted on both sides of the upper end of the base plate, the mounting frames being U-shaped, and being located above the water tank, a self-locking multi-section hydraulic push rod being mounted on the upper end of the mounting frame, a mounting assembly being mounted on the lower end of the self-locking multi-section hydraulic push rod, the mounting assembly being located above the interior of the mounting frame, and an inflating assembly being clamped on the mounting assembly, an airbag body being mounted on the lower end of the inflating assembly, an adjustable pushing assembly being fixedly mounted on the inner lower end of the water tank, and the adjustable pushing assembly being located at the Below the airbag body, a display screen is fixedly installed on one side of the outside of the mounting frame. When in use, the structure is first placed at the place of use, and then the airbag body is mounted on the inflation assembly, and then the inflation assembly is mounted on the lower end of the self-locking multi-section hydraulic push rod through the mounting assembly. The self-locking multi-section hydraulic push rod drives the mounting assembly, the inflation assembly and the airbag body to move into the water tank, and the inflation assembly fills the airbag body with gas, and the air tightness is judged by observing whether bubbles are generated. After the inflation is completed, the adjustable pushing assembly can push the airbag body, thereby simulating the air tightness of the airbag body when it is subjected to force, thereby improving the accuracy of the test.

[0008] Furthermore, in order to be able to fill water into the water tank and thus conduct testing, supporting feet are fixedly installed at the four corners of the lower end of the base plate, and anti-slip pads are fixedly installed at the lower ends of the supporting feet. A water pump is fixedly installed on one side of the outside of the water tank, the water pump is located on one side of the mounting frame, and a water inlet pipe is fixedly installed at the input end of the water pump, and the other end of the water inlet pipe is connected to an external water storage tank. A water injection pipe is fixedly installed at the output end of the water pump, and the other end of the water injection pipe is located on one side of the upper part of the water tank. A drain pipe is fixedly installed on one side of the lower end of the water tank, and the lower end of the drain pipe extends to the lower end of the base plate, and a sealing cover is clamped at the lower end of the drain pipe.

[0009] Furthermore, in order to drive the fixed plate to move, the mounting assembly includes a mounting plate, the mounting plate is fixedly mounted on the lower end of the self-locking multi-section hydraulic push rod, and the mounting plate is located inside the mounting frame, the mounting plate is cross-shaped, and the four ends of the mounting plate are provided with cross slide grooves, the cross slide grooves are rotatably clamped with fixing screws, and a knob is fixedly installed at one end of the outer side of the fixing screw, the knob is located on the outside of the four ends of the mounting plate, the cross slide groove is slidably clamped with a fixing plate, the upper part of the fixing plate is threadedly sleeved on the fixing screw, and a limiting column is fixedly installed on one side of the lower part of the fixing plate, and a clamping groove is provided in the middle position of the lower end of the mounting plate.

[0010] Furthermore, in order to be able to clamp and fix the sealing box to the lower end of the mounting plate, the inflation assembly includes a sealing box, a clamping column is fixedly installed on the outer upper end of the sealing box, the clamping column corresponds to the clamping groove, and limiting holes are provided on the upper parts of the four sides of the sealing box, the limiting holes correspond to the limiting columns, and the sealing box is clamped to the lower end of the mounting plate through the clamping column and the clamping groove, the limiting holes and the limiting columns.

[0011] Furthermore, in order to inflate the airbag body, an air pump is fixedly installed on one side of the interior of the sealing box, an air intake hose is fixedly installed on the input end of the air pump, the other end of the air intake hose extends to the outside of the sealing box, and an air inflation tube is fixedly installed on the output end of the air pump.

[0012] Furthermore, in order to connect the airbag body with the inflation assembly, a connector is fixedly installed on the other end of the inflation tube, the connector is T-shaped, a fixing nut is threadedly sleeved on the connector, a sealing ring is fixedly installed on the lower upper end of the connector and the lower end of the fixing nut, the bottom diameter of the connector is larger than the air inlet diameter of the airbag body, the airbag body is sleeved on the lower part of the connector, and the air inlet of the airbag body is located between the sealing rings.

[0013] Furthermore, in order to be able to push the airbag body and conveniently adjust the pushing position, the adjustable pushing assembly includes a longitudinal slide rail, which is fixedly installed at the middle position of the lower end of the water tank, and the inner rotation of the longitudinal slide rail is clamped with a longitudinal threaded rod, one end of the longitudinal threaded rod extends to the outer end of the longitudinal slide rail, one end of the longitudinal threaded rod is fixedly installed with a longitudinal adjustment knob, the longitudinal adjustment knob is located at the outer end of the longitudinal slide rail, and a transverse slide rail is slidably clamped in the longitudinal slide rail. The lower thread of the transverse slide rail is sleeved on the longitudinal threaded rod, and the transverse threaded rod is rotatably clamped inside the transverse slide rail, a transverse adjustment knob is fixedly installed on the outer end of the transverse slide rail, and the transverse adjustment knob is located at the outer end of the transverse slide rail, a slider is slidably clamped on the transverse slide rail, the lower thread of the slider is sleeved on the transverse threaded rod, a waterproof hydraulic push rod is fixedly installed on the upper end of the slider, a push plate is fixedly installed on the upper end of the waterproof hydraulic push rod, and a rubber pad is fixedly installed on the upper end of the push plate.

[0014] Furthermore: In order to more intuitively observe whether there are bubbles coming out of the outside of the airbag body, underwater cameras are fixedly installed on both sides of the inside of the water tank, and the underwater cameras are connected to the display screen.

[0015] Furthermore, a quality inspection method for air bag air tightness test comprises the following steps: Step 1: Pump water into the water storage tank through the water pump, and stop water intake when the water level reaches the water level line on the water storage tank; Step 2: After the water storage tank is filled with water, take out an airbag body to be tested from the loading rack, clamp the air inlet of the airbag body to the lower part of the connector, and rotate the fixing nut to make the sealing gasket ring closely contact with the air inlet of the airbag body, so as to press and fix the airbag body, and then clamp the sealing box under the mounting plate through the clamping column and the clamping groove, and then rotate the fixing knob, which drives the fixing screw to rotate, thereby driving the fixing plate to move, and clamping and fixing the surrounding of the sealing box; Step 3: The sealing box can be clamped and fixed by the limiting hole and the limiting column, and then the installation assembly, the inflation assembly and the airbag body are driven to move into the water tank by the self-locking multi-section hydraulic push rod, and then the gas can be pumped into the airbag body by the inflation pump, and the air tightness of the airbag body can be judged by observing whether bubbles are generated, and the underwater camera can take pictures of the airbag body and play it in real time through the display screen, so that the staff can further observe and identify the test results; Step 4: Control the self-locking multi-section hydraulic push rod to continue to press down until the airbag body contacts the push plate and the push plate generates pressure on the airbag body, and then observe whether bubbles are generated in the airbag body, wherein the extrusion position of the push plate can be adjusted, and the longitudinal threaded rod and the transverse threaded rod can be driven to rotate by rotating the longitudinal adjustment knob and the transverse adjustment knob, thereby driving the transverse slide rail and the slider to move, so that the pushing position can be adjusted, and the waterproof hydraulic push rod can drive the push plate to move, thereby pushing the airbag body to simulate the force condition, thereby completing the air tightness test of the airbag body; Step 5: Remove the airbag body by rotating the fixing nut, classify the tested airbag body according to the quality inspection results, label it and send it to the drying workshop for centralized drying and dehumidification. When all the airbag bodies are inspected, open the sealing cover to drain the water through the drain pipe for next use.

[0016] The beneficial effects of the present invention are as follows: by immersing the airbag body in water for testing, the air tightness can be intuitively judged by whether bubbles are generated in the water, thereby improving the accuracy of the test structure; at the same time, the adjustable pushing assembly can be used to push different positions of the airbag body, thereby simulating the situation when under force, making the test result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a half-section view of the overall structure of the present invention; Figure 3 A half-section view of the water storage tank of the present invention; Figure 4 It is a structural schematic diagram of the mounting frame in the present invention; Figure 5 It is a structural schematic diagram of the installation components in the present invention; Figure 6 A half-section view of the installation assembly of the present invention; Figure 7 A half-section view of the inflatable component of the present invention; Figure 8 A half-section view of the airbag body of the present invention; Fig. 9 A half-section view of the connector of the present invention; Fig.10 It is a structural schematic diagram of the adjustable pushing assembly in the present invention; Fig.11 A half-section view of the push plate in the present invention; The accompanying drawings are marked as follows: 1. bottom plate; 2. water storage tank; 3. mounting frame; 4. self-locking multi-section hydraulic push rod; 5. mounting assembly; 501. mounting plate; 502. cross slide; 503. fixing screw; 504. fixing knob; 505. fixing plate; 506. limiting column; 507. clamping groove; 6. inflation assembly; 601. sealing box; 602. clamping column; 603. limiting hole; 604. inflation pump; 605. air intake hose; 606. inflation pipe; 607. connector; 608. fixing Nut; 609, sealing gasket; 7, airbag body; 8, adjustable push assembly; 801, longitudinal slide rail; 802, longitudinal threaded rod; 803, longitudinal adjustment knob; 804, transverse slide rail; 805, transverse threaded rod; 806, transverse adjustment knob; 807, slider; 808, waterproof hydraulic push rod; 809, push plate; 9, display screen; 10, support foot; 11, water pump; 12, water inlet pipe; 13, water injection pipe; 14, drain pipe; 15, sealing cover; 16, underwater camera. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0019] See also Figure 1-Figure 11 As shown, a safety air bag air tightness testing device and quality inspection method include a base plate 1, a water tank 2 is fixedly installed on the upper end of the base plate 1, the water tank 2 is made of transparent material, and mounting frames 3 are installed on both sides of the upper end of the base plate 1, the mounting frame 3 is U-shaped, and the mounting frame 3 is located above the water tank 2, and a self-locking multi-section hydraulic push rod 4 is installed on the upper end of the mounting frame 3. The self-locking multi-section hydraulic push rod 4 in the present application can also be replaced by a controllable lifting cylinder or a screw rod driven by a stepping motor, etc., a mounting component 5 is installed on the lower end of the self-locking multi-section hydraulic push rod 4, the mounting component 5 is located above the inside of the mounting frame 3, and an inflation component 6 is clamped on the mounting component 5, and an air bag body 7 is installed on the lower end of the inflation component 6, and a controllable lifting cylinder 4 is fixedly installed on the inner lower end of the water tank 2. Adjustable pushing assembly 8, the adjustable pushing assembly 8 is located below the airbag body 7, and a display screen 9 is fixedly installed on the outer side of the mounting frame 3. When in use, first place this structure at the place of use, then install the airbag body 7 on the inflation assembly 6, and then install the inflation assembly 6 on the lower end of the self-locking multi-section hydraulic push rod 4 through the mounting assembly 5. The self-locking multi-section hydraulic push rod 4 drives the mounting assembly 5, the inflation assembly 6 and the airbag body 7 to move into the water tank 2, and the inflation assembly 6 fills the airbag body 7 with gas, and the airtightness is judged by observing whether bubbles are generated. After the inflation is completed, the adjustable pushing assembly 8 can push the airbag body 7, thereby simulating the airtightness of the airbag body 7 when it is under force, thereby improving the accuracy of the test.

[0020] Support legs 10 are fixedly installed at the four corners of the lower end of the base plate 1, and anti-slip pads are fixedly installed at the lower ends of the support legs 10. A water pump 11 is fixedly installed on one side of the outside of the water tank 2, and the water pump 11 is located on one side of the mounting frame 3, and an inlet pipe 12 is fixedly installed at the input end of the water pump 11, and the other end of the inlet pipe 12 is connected to the external water tank, and an injection pipe 13 is fixedly installed at the output end of the water pump 11, and the other end of the injection pipe 13 is located on the upper side of the water tank 2, and a drain pipe 14 is fixedly installed on one side of the lower end of the water tank 2, and the lower end of the drain pipe 14 extends to the lower end of the base plate 1, and a sealing cover 15 is clamped at the lower end of the drain pipe 14. When in use, the structure is first placed at the use location through the support legs 10, and then water is pumped into the water tank 2 through the water pump 11. When use is completed, the sealing cover 15 is opened to discharge the water through the drain pipe 14, which is convenient for next use.

[0021] The mounting assembly 5 includes a mounting plate 501, which is fixedly mounted on the lower end of the self-locking multi-section hydraulic push rod 4, and the mounting plate 501 is located inside the mounting frame 3. The mounting plate 501 is in a cross shape, and a cross slide 502 is provided at each of the four ends of the mounting plate 501. A fixing screw 503 is rotatably clamped in the cross slide 502, and a fixing knob 504 is fixedly installed at one end of the outer side of the fixing screw 503. The fixing knob 504 is located on the outer side of the four ends of the mounting plate 501, and a fixing plate 505 is slidably clamped in the cross slide 502. The upper part of the fixing plate 505 is threadedly sleeved on the fixing screw 503, and a limiting column 506 is fixedly installed on one side of the lower part of the fixing plate 505. A clamping groove 507 is provided in the middle position of the lower end of the mounting plate 501 The inflation component 6 includes a sealing box 601, and a clamping column 602 is fixedly installed on the outer upper end of the sealing box 601, and the clamping column 602 corresponds to the clamping groove 507, and the upper parts of the four sides of the sealing box 601 are provided with limiting holes 603, and the limiting holes 603 correspond to the limiting columns 506. The sealing box 601 is clamped to the lower end of the mounting plate 501 through the clamping column 602 and the clamping groove 507, the limiting holes 603 and the limiting columns 506. When the water storage tank 2 is filled with water, the sealing box 601 is clamped to the bottom of the mounting plate 501 through the clamping column 602 and the clamping groove 507, and then the fixing knob 504 is rotated, and the fixing knob 504 drives the fixing screw 503 to rotate, thereby driving the fixing plate 505 to move, and clamping and fixing the sealing box 601 on all sides.

[0022] A connector 607 is fixedly installed on the other end of the inflation tube 606. The cross-sectional shape of the connector 607 is T-shaped. A fixing nut 608 is threadedly sleeved on the connector 607. A sealing gasket 609 is fixedly installed on the lower upper end of the connector 607 and the lower end of the fixing nut 608. The bottom diameter of the connector 607 is larger than the air inlet diameter of the airbag body 7. The airbag body 7 is sleeved on the lower part of the connector 607, and the air inlet of the airbag body 7 is located between the sealing gaskets 609. An inflation pump 604 is fixedly installed on one side of the interior of the sealing box 601. An air intake hose 605 is fixedly installed on the input end of the inflation pump 604. The other end of the air intake hose 605 extends to the outside of the sealing box 601, and an inflation tube 606 is fixedly installed on the output end of the inflation pump 604. Underwater cameras 1 are fixedly installed on both sides of the interior of the water storage tank 2. 6. The underwater camera 16 is connected to the display screen 9. When in use, take out an airbag body 7 to be tested from the loading rack, clamp the air inlet of the airbag body 7 on the lower part of the connector 607, and rotate the fixing nut 608 to make the sealing gasket ring 609 in close contact with the air inlet of the airbag body 7, so as to press and fix the airbag body 7. Then, the self-locking multi-section hydraulic push rod 4 drives the installation component 5, the inflation component 6 and the airbag body 7 to move into the water tank 2, and then the gas can be pumped into the airbag body 7 through the inflation pump 604. The air tightness of the airbag body 7 can be determined by observing whether bubbles are generated, and the underwater camera 16 can shoot the airbag body 7 and play it in real time through the display screen 9, so that the staff can further observe and identify the test results.

[0023] The adjustable pushing assembly 8 includes a longitudinal slide rail 801, which is fixedly installed in the middle position of the lower end of the water storage tank 2, and the longitudinal slide rail 801 is internally rotatably connected with a longitudinal threaded rod 802, one end of the longitudinal threaded rod 802 extends to the outer end of the longitudinal slide rail 801, and one end of the longitudinal threaded rod 802 is fixedly installed with a longitudinal adjustment knob 803, and the longitudinal adjustment knob 803 is located at the outer end of the longitudinal slide rail 801. A transverse slide rail 804 is slidably connected in the longitudinal slide rail 801, and the lower part of the transverse slide rail 804 is threadedly sleeved on the longitudinal threaded rod 802, and the transverse slide rail 804 is internally rotatably connected with a transverse threaded rod 805, and the outer end of the transverse slide rail 804 is fixedly installed with a transverse adjustment knob 806, and the transverse adjustment knob 806 is located at the outer end of the transverse slide rail 804. At one end of the outside, a slider 807 is slidably connected to the transverse slide rail 804, and the lower thread of the slider 807 is sleeved on the transverse threaded rod 805. A waterproof hydraulic push rod 808 is fixedly installed on the upper end of the slider 807, and a push plate 809 is fixedly installed on the upper end of the waterproof hydraulic push rod 808. A rubber pad is fixedly installed on the upper end of the push plate 809. When in use, the longitudinal threaded rod 802 and the transverse threaded rod 805 can be driven to rotate by rotating the longitudinal adjustment knob 803 and the transverse adjustment knob 806, thereby driving the transverse slide rail 804 and the slider 807 to move, so that the pushing position can be adjusted. After the position adjustment is completed, the waterproof hydraulic push rod 808 can drive the push plate 809 to move, thereby pushing the airbag body 7 to simulate the force situation, thereby completing the air tightness test of the airbag body 7.

[0024] As the second embodiment of the present invention, the solution injected into the water tank 2 is replaced with a phenolphthalein solution, and the gas injected into the airbag body 7 is replaced with ammonia. When the airtightness of the airbag body 7 is poor, the ammonia filled in the airbag body 7 will be released into the phenolphthalein solution, and the solution will turn red, allowing the staff to find unqualified airbag bodies more intuitively.

[0025] When the present invention is in use, water is pumped into the water storage tank 2 by the water pump 11, and the water intake is stopped when the water level reaches the water level line on the water storage tank 2. When the water storage tank 2 is filled with water, a safety airbag body 7 to be tested is taken out from the loading rack, the air inlet of the safety airbag body 7 is clamped on the lower part of the connector 607, and the fixing nut 608 is rotated to make the sealing gasket ring 609 closely contact with the air inlet of the safety airbag body 7, so that the safety airbag body 7 can be fixed by pressing, and then the sealing box 601 is clamped on the safety airbag body 7 by the clamping column 602 and the clamping groove 507. The fixing knob 504 is then turned below the mounting plate 501, and the fixing knob 504 drives the fixing screw 503 to rotate, thereby driving the fixing plate 505 to move, clamping and fixing the surrounding of the sealing box 601, and the sealing box 601 can be clamped and fixed by the limiting hole 603 and the limiting column 506, and then the self-locking multi-section hydraulic push rod 4 drives the mounting component 5, the inflation component 6 and the airbag body 7 to move into the water tank 2, and then the gas can be pumped into the airbag body 7 by the inflation pump 604, and it can be judged by observing whether bubbles are generated. The airtightness of the airbag body 7 can be checked, and the underwater camera 16 can take a video of the airbag body 7 and play it in real time through the display screen 9. The underwater camera 16 and the display screen 9 can be connected wirelessly or wired to facilitate the staff to further observe and identify the test results. By rotating the longitudinal adjustment knob 803 and the transverse adjustment knob 806, the longitudinal threaded rod 802 and the transverse threaded rod 805 can be driven to rotate, thereby driving the transverse slide rail 804 and the slider 807 to move, so that the pushing position It can be adjusted. After the position adjustment is completed, the waterproof hydraulic push rod 808 can drive the push plate 809 to move, thereby pushing the airbag body 7 to simulate the stress condition, so as to complete the air tightness test of the airbag body 7. The airbag body 7 is removed by rotating the fixing nut 608. The tested airbag body 7 is classified according to the quality inspection result, labeled and sent to the drying workshop for centralized drying and dehumidification. When the inspection of all airbag bodies 7 is completed, the sealing cover 15 can be opened to discharge the water through the drain pipe 14, which is convenient for next use.

[0026] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. An air bag air tightness test device, characterized in that: The invention comprises a bottom plate (1), a water tank (2) being fixedly mounted on the upper end of the bottom plate (1), the water tank (2) being made of a transparent material, and mounting frames (3) being mounted on both sides of the upper end of the bottom plate (1), the mounting frames (3) being U-shaped and being located above the water tank (2), a self-locking multi-section hydraulic push rod (4) being mounted on the upper end of the mounting frame (3), a mounting assembly (5) being mounted on the lower end of the self-locking multi-section hydraulic push rod (4), the mounting assembly (5) being located above the inside of the mounting frame (3), an inflating assembly (6) being clamped on the mounting assembly (5), a safety airbag body (7) being mounted on the lower end of the inflating assembly (6), an adjustable pushing assembly (8) being fixedly mounted on the lower end of the inside of the water tank (2), the adjustable pushing assembly (8) being located below the safety airbag body (7), and a display screen (9) being fixedly mounted on one side of the outside of the mounting frame (3).

2. The air bag air tightness testing device according to claim 1, characterized in that: Support legs (10) are fixedly mounted at the four corners of the lower end of the base plate (1), and anti-skid pads are fixedly mounted at the lower ends of the support legs (10). A water pump (11) is fixedly mounted on one side of the exterior of the water storage tank (2), and the water pump (11) is located on one side of the mounting frame (3). A water inlet pipe (12) is fixedly mounted on the input end of the water pump (11), and the other end of the water inlet pipe (12) is connected to the external water storage tank. A water injection pipe (13) is fixedly mounted on the output end of the water pump (11), and the other end of the water injection pipe (13) is located on one side of the upper portion of the water storage tank (2). A drainage pipe (14) is fixedly mounted on one side of the lower end of the water storage tank (2), and the lower end of the drainage pipe (14) extends to the lower end of the base plate (1), and a sealing cover (15) is clamped on the lower end of the drainage pipe (14).

3. The air bag air tightness testing device according to claim 1, characterized in that: The mounting assembly (5) comprises a mounting plate (501), the mounting plate (501) being fixedly mounted on the lower end of the self-locking multi-section hydraulic push rod (4), and the mounting plate (501) being located inside the mounting frame (3), the mounting plate (501) being cross-shaped, and the four ends of the mounting plate (501) are each provided with a cross slide groove (502), and a fixing screw rod (503) is rotatably clamped in each of the cross slide grooves (502), and the fixing screw rod (503) is A fixing knob (504) is fixedly installed at one end of the outside of the fixing plate (501), and the fixing knob (504) is located outside the four ends of the mounting plate (501). A fixing plate (505) is slidably engaged in the cross groove (502), and the upper part of the fixing plate (505) is threadedly sleeved on the fixing screw (503), and a limiting column (506) is fixedly installed on one side of the lower part of the fixing plate (505). A clamping groove (507) is provided in the middle position of the lower end of the mounting plate (501).

4. The air bag air tightness testing device according to claim 3, characterized in that: The inflatable component (6) comprises a sealing box (601), a clamping column (602) being fixedly mounted on the outer upper end of the sealing box (601), the clamping column (602) corresponding to the clamping groove (507), and limiting holes (603) are provided on the upper parts of four sides of the sealing box (601), the limiting holes (603) corresponding to the limiting columns (506), and the sealing box (601) is clamped to the lower end of the mounting plate (501) via the clamping column (602) and the clamping groove (507) and the limiting holes (603) and the limiting columns (506).

5. The air bag air tightness testing device according to claim 4, characterized in that: An air pump (604) is fixedly mounted on one side of the interior of the sealing box (601), an air intake hose (605) is fixedly mounted on the input end of the air pump (604), the other end of the air intake hose (605) extends to the outside of the sealing box (601), and an air filling tube (606) is fixedly mounted on the output end of the air pump (604).

6. The air bag air tightness testing device according to claim 5, characterized in that: A connector (607) is fixedly mounted on the other end of the inflation tube (606); the connector (607) is T-shaped; a fixing nut (608) is threadedly sleeved on the connector (607); a sealing ring (609) is fixedly mounted on the upper end of the lower part of the connector (607) and the lower end of the fixing nut (608); the bottom diameter of the connector (607) is larger than the diameter of the air inlet of the airbag body (7); the airbag body (7) is sleeved on the lower part of the connector (607), and the air inlet of the airbag body (7) is located between the sealing rings (609).

7. The air bag air tightness testing device according to claim 1, characterized in that: The adjustable pushing assembly (8) comprises a longitudinal slide rail (801), the longitudinal slide rail (801) being fixedly mounted at a middle position of the lower end of the water storage tank (2), and a longitudinal threaded rod (802) being rotatably engaged inside the longitudinal slide rail (801), one end of the longitudinal threaded rod (802) extending to an outer end of the longitudinal slide rail (801), a longitudinal adjustment knob (803) being fixedly mounted on one end of the longitudinal threaded rod (802), the longitudinal adjustment knob (803) being located at an outer end of the longitudinal slide rail (801), a transverse slide rail (804) being slidably engaged in the longitudinal slide rail (801), and a lower thread of the transverse slide rail (804) being sleeved on the longitudinal threaded rod. The lateral slide rail (804) is provided with a threaded rod (802), and a lateral threaded rod (805) is rotatably clamped inside the lateral slide rail (804); a lateral adjustment knob (806) is fixedly mounted on an outer end of the lateral slide rail (804); the lateral adjustment knob (806) is located at an outer end of the lateral slide rail (804); a slider (807) is slidably clamped on the lateral slide rail (804); the lower part of the slider (807) is threadedly sleeved on the lateral threaded rod (805); a waterproof hydraulic push rod (808) is fixedly mounted on the upper end of the slider (807); a push plate (809) is fixedly mounted on the upper end of the waterproof hydraulic push rod (808); and a rubber pad is fixedly mounted on the upper end of the push plate (809).

8. The air bag air tightness testing device according to claim 1, characterized in that: Underwater cameras (16) are fixedly mounted on both sides of the interior of the water storage tank (2), and the underwater cameras (16) are connected to the display screen (9).

9. A quality inspection method for air bag air tightness test, comprising the following steps: Step 1: Pumping water into the water storage tank (2) through the water pump (11), and stopping water intake when the water level reaches the water level line on the water storage tank (2); Step 2: After the water storage tank (2) is filled with water, take out an airbag body (7) to be tested from the loading rack, clamp the air inlet of the airbag body (7) to the lower part of the connector (607), and rotate the fixing nut (608) so that the sealing gasket ring (609) is in close contact with the air inlet of the airbag body (7), thereby pressing and fixing the airbag body (7), and then clamping the sealing box (601) to the bottom of the mounting plate (501) through the clamping column (602) and the clamping groove (507), and then rotating the fixing knob (504), so that the fixing knob (504) drives the fixing screw (503) to rotate, thereby driving the fixing plate (505) to move, and clamping and fixing the surrounding of the sealing box (601); Step 3: The sealing box (601) can be fixed in position by means of the limiting hole (603) and the limiting column (506), and then the mounting assembly (5), the inflation assembly (6) and the airbag body (7) can be driven by the self-locking multi-section hydraulic push rod (4) to move into the water storage tank (2), and then the gas can be pumped into the airbag body (7) by the inflation pump (604). The air tightness of the airbag body (7) can be determined by observing whether bubbles are generated, and the underwater camera (16) can take a picture of the airbag body (7), and the picture can be played in real time through the display screen (9), so that the staff can further observe and identify the test results; Step 4: Control the self-locking multi-section hydraulic push rod (4) to continue to press down until the airbag body (7) contacts the push plate (809) and causes the push plate (809) to generate pressure on the airbag body (7), and then observe whether bubbles are generated in the airbag body (7), wherein the squeezing position of the push plate (809) can be adjusted, and the longitudinal threaded rod (802) and the transverse threaded rod (805) can be driven to rotate by rotating the longitudinal adjustment knob (803) and the transverse adjustment knob (806), thereby driving the transverse slide rail (804) and the slider (807) to move, so that the pushing position can be adjusted, and the waterproof hydraulic push rod (808) can drive the push plate (809) to move, thereby pushing the airbag body (7) to simulate the stress condition, thereby completing the airtightness test of the airbag body (7); Step 5: Remove the airbag body (7) by rotating the fixing nut (608), classify the tested airbag bodies (7) according to the quality inspection results, label them and send them to a drying workshop for centralized drying and dehumidification. When all the airbag bodies (7) are inspected, open the sealing cover (15) to drain the water through the drain pipe (14) to facilitate the next use.

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