A life jacket waterproof seal testing device

Abstract

This invention relates to the technical field of life jacket performance testing equipment, and more particularly to a waterproof sealing testing device for life jackets. It includes a frame, a life jacket body to be tested installed inside the frame, a sealing clamp for clamping and sealing each cuff of the life jacket body, and a rotating assembly connected to the frame for driving the frame to rotate. The sealing clamp includes a mounting base, a fixed clamp, a movable clamp, a follower clamp, a drive cylinder, and a guide rod. The fixed clamp is installed in the mounting base, and its clamping surface has a first semi-circular opening adapted to the cuff to be sealed. The movable clamp is adjacent to the fixed clamp, and its clamping surface has a second semi-circular opening adapted to the cuff to be sealed. The follower clamp is located between the first and second semi-circular openings, and has an air inlet and a water inlet.

Description

Technical Field

[0001] This invention relates to the technical field of life jacket performance testing equipment, and in particular to a life jacket waterproof sealing testing device. Background Technology

[0002] Life jackets are essential safety equipment for water operations, water sports, and ship navigation, and their waterproof and sealing performance is directly related to the safety of the user. After production, life jackets must undergo rigorous waterproof and sealing performance testing to ensure that the product quality meets national standards.

[0003] Currently, existing technologies for testing the waterproof sealing performance of life jackets have the following main shortcomings:

[0004] 1. Low test accuracy: Traditional testing methods often involve manually immersing the life jacket in water and visually observing whether bubbles are generated to determine the seal. The test results are greatly affected by human factors such as the tester's experience, observation angle, and attention, which can easily lead to missed detections and misjudgments.

[0005] 2. Incomplete testing: Manual testing can only inspect local areas of the life jacket and cannot conduct a comprehensive and uniform water pressure test on all parts of the life jacket. In particular, weak areas such as the seams, cuffs and collar of the life jacket are easily missed.

[0006] 3. Low testing efficiency: Traditional testing processes require multiple testers to work together, resulting in high labor intensity and slow testing speed, which cannot meet the testing needs of mass production.

[0007] 4. Sealing difficulties: Openings such as the cuffs of life jackets are difficult to seal effectively during testing, which can easily lead to leakage of test water from the cuffs, seriously affecting the accuracy of test results.

[0008] Therefore, it is necessary to propose a technical means to solve the above-mentioned defects. Summary of the Invention

[0009] The present invention adopts the following technical solution:

[0010] A waterproof sealing test device for life jackets includes a frame, a life jacket body to be tested installed inside the frame, a sealing clamp for clamping and sealing each cuff of the life jacket body to be tested, and a rotating component connected to the frame for driving the frame to rotate.

[0011] The sealing clamp includes a mounting base, a fixed clamp, a movable clamp, a follower clamp, a drive cylinder, and a guide rod. The fixed clamp is installed in the mounting base, and its clamping surface has a first semi-circular opening adapted to the cuff to be sealed. The movable clamp is adjacent to the fixed clamp, and its clamping surface has a second semi-circular opening adapted to the cuff to be sealed. The follower clamp is located between the first and second semi-circular openings, and has an air inlet and a water inlet. The drive cylinder is installed in the mounting base and connected to the movable clamp, for driving the movable clamp to move toward the fixed clamp. The guide rod is installed in the mounting base and connected to the follower clamp, for driving the follower clamp to move directionally between the fixed clamp and the movable clamp.

[0012] Preferably, it further includes a base; the frame is mounted on the base; and the rotating assembly is mounted on the side of the frame.

[0013] Preferably, a water-holding tray is provided at the bottom of the frame.

[0014] Preferably, the base is provided with casters.

[0015] Preferably, the rotating assembly includes a first connecting plate, a second connecting plate, a first connecting shaft, a second connecting shaft, a worm gear, a worm, a drive motor, and a connecting seat; the first connecting plate and the second connecting plate are respectively connected to both sides of the frame; the first connecting shaft is connected to the first connecting plate; the worm gear is installed on the first connecting shaft; the worm meshes with the worm gear; the drive motor is connected to the worm and is used to drive the worm to rotate; the second connecting shaft is installed in the connecting seat and is connected to the second connecting plate.

[0016] Preferably, the rotating assembly further includes a first transmission wheel, a second transmission wheel, and a transmission belt; the first transmission wheel and the second transmission wheel are respectively mounted on the ends of the worm and the drive motor; the transmission belt is connected to the first transmission wheel and the second transmission wheel.

[0017] Preferably, the frame includes an upper frame and a lower frame; the upper frame is movably mounted above the lower frame.

[0018] Preferably, it also includes a control console for controlling the operation of the device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. High testing accuracy: The automated sealing clamps seal the cuffs of the life jackets, ensuring a good seal and preventing water leakage from affecting the test results. The test is conducted by combining air and water filling with rotation, which can accurately detect even the smallest leaks in any part of the life jacket.

[0021] 2. Comprehensive testing: The rotating component drives the frame to rotate the life jacket 360 degrees, enabling comprehensive and even testing of all parts of the life jacket, ensuring there are no blind spots in the testing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a waterproof sealing test device for life jackets according to the present invention.

[0023] Figure 2 for Figure 1 An overall diagram after removing the shelf and part of the cover;

[0024] Figure 3 This is a schematic diagram of a sealing clamp;

[0025] Figure 4 This is a partial structural diagram of the rotating assembly. Attached figures: 10-Frame; 101-Upper frame; 102-Lower frame; 20-Life jacket body to be tested; 30-Sealing clamp; 301-Mounting base; 302-Fixing clamp; 303-First semi-circular clamp; 304-Moving clamp; 305-Second semi-circular clamp; 306-Follow-up clamp; 307-Air inlet; 308-Water inlet; 309-Drive cylinder; 310-Guide rod; 40-Rotating assembly; 401-First connecting plate; 402-Second connecting plate; 403-First connecting shaft; 404-Worm gear; 405-Worm; 406-Drive motor; 407-Connecting base; 408-First transmission wheel; 409-Second transmission wheel; 410-Transmission belt; 50-Base; 501-Water tray; 502-Control console. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Please refer to... Figures 1 to 4 A waterproof sealing testing device for life jackets includes a frame 10, a life jacket body 20 to be tested installed inside the frame 10, a sealing clamp 30 for clamping and sealing each cuff of the life jacket body 20, and a rotating assembly 40 connected to the frame 10 for driving the frame 10 to rotate. The sealing clamp 30 includes a mounting base 301, a fixed clamp 302, a movable clamp 304, a follower clamp 306, a driving cylinder 309, and a guide rod 310. The fixed clamp 302 is installed inside the mounting base 301, and the clamping surface of the fixed clamp 302 has a first semi-circular clamping opening 303 adapted to the cuff to be sealed. The movable clamp 304 is adjacent to the fixed clamp. 302, and the clamping surface of the movable clamp 304 is provided with a second semi-circular clamping opening 305 adapted to the cuff to be closed; the follower clamp 306 is disposed between the first semi-circular clamping opening 303 and the second semi-circular clamping opening 305, and the follower clamp 306 is provided with an air inlet 307 and a water inlet 308; the driving cylinder 309 is installed on the mounting base 301 and connected to the movable clamp 304, for driving the movable clamp 304 to move toward the fixed clamp 302; the guide rod 310 is installed on the mounting base 301 and connected to the follower clamp 306, for driving the follower clamp 306 to move directionally between the fixed clamp 302 and the movable clamp 304.

[0029] In this embodiment, the life jacket body 20 to be tested is placed inside the frame 10, and each cuff of the life jacket body 20 to be tested is respectively fitted onto the outside of the corresponding follower clamp 306; the drive cylinder 309 is activated, and the piston rod of the drive cylinder 309 extends, pushing the moving clamp 304 to move towards the fixed clamp 302; during the movement of the moving clamp 304, the second semi-circular clamping opening 305 first abuts against one side of the follower clamp 306, and as the moving clamp 304 continues to move, under the guiding and limiting action of the guide rod 310, the follower clamp 306 moves synchronously towards the fixed clamp 302 with the moving clamp 304; until the follower clamp 306... The other side of 6 is tightly fitted with the first semi-circular clamp 303. At this time, the first semi-circular clamp 303 and the second semi-circular clamp 305 together clamp the follower clamp 306, and at the same time press and seal the life jacket cuff sleeve sleeved on the outside of the follower clamp 306. A certain amount of water is filled into the body 20 of the life jacket under test through the water inlet 308. After the water filling is completed, the water inlet valve is closed. Gas at a set pressure is filled into the body 20 of the life jacket under test through the air inlet 307. After the air filling is completed, the air inlet valve is closed. The rotating component 40 is started. The rotating component 40 drives the frame 10 to rotate 360° around the horizontal axis, thereby driving the body 20 of the life jacket under test to rotate synchronously. By employing a structural design that combines a follower chuck 306 with a fixed chuck 302 and a movable chuck 304, automatic clamping and sealing of the life jacket cuffs is achieved. The sealing pressure is uniform and consistent, resulting in a good sealing effect and effectively avoiding test misjudgments caused by poor sealing. The air inlet 307 and water inlet 308 are integrated inside the follower chuck 306, resulting in a compact structure that simplifies pipeline connections and avoids interference from pipelines on the rotation of the life jacket. The rotating component 40 drives the frame 10 and the life jacket body 20 under test to rotate, simulating various postures of the life jacket during actual use. This allows for the full detection of leaks in all parts of the life jacket, ensuring comprehensive and accurate testing. The entire testing process is highly automated, greatly improving testing efficiency and reducing the workload of testing personnel.

[0030] In one specific embodiment, a base 50 is also included; the frame 10 is mounted on the base 50; and the rotating assembly 40 is mounted on the side of the frame 10. In this embodiment, the base 50 provides a stable support foundation for the entire device; furthermore, a water-collecting tray 501 is provided below the frame 10. The water-collecting tray 501 can collect water seeping from the life jacket, allowing testers to visually observe whether there is a leak, as well as the location and amount of the leak; at the same time, it prevents water from dripping directly onto the ground, keeping the test environment clean and dry.

[0031] In one specific embodiment, the base 50 is equipped with casters. The casters are omnidirectional and mounted on the four corners of the base 50. Each caster is equipped with a brake; when the device moves to a designated position, pressing the brake will lock the device in place. The casters allow the device to be easily moved to different testing positions, improving its flexibility and versatility. The brakes ensure the device remains stationary during testing, guaranteeing accuracy.

[0032] In one specific embodiment, the rotating assembly 40 includes a first connecting plate 401, a second connecting plate 402, a first connecting shaft 403, a second connecting shaft, a worm gear 404, a worm 405, a drive motor 406, and a connecting seat 407; the first connecting plate 401 and the second connecting plate 402 are respectively connected to both sides of the frame 10; the first connecting shaft 403 is connected to the first connecting plate 401; the worm gear 404 is installed on the first connecting shaft 403; the worm 405 meshes with the worm gear 404; the drive motor 406 is connected to the worm 405 and is used to drive the worm 405 to rotate; the second connecting shaft is installed in the connecting seat 407 and is connected to the second connecting plate 402. In this embodiment, during operation, the drive motor 406 is started, and the output shaft of the drive motor 406 drives the worm gear 405 to rotate; the worm gear 405 drives the worm wheel 404 to rotate through meshing transmission; the worm wheel 404 drives the first connecting shaft 403 to rotate; the first connecting shaft 403 drives the frame 10 to rotate through the first connecting plate 401; while the frame 10 rotates, the second connecting shaft rotates synchronously within the connecting seat 407 through the second connecting plate 402. The worm gear transmission mechanism has the advantages of a large transmission ratio, smooth transmission, low noise, and good self-locking performance; it enables the frame 10 to rotate smoothly, and when the drive motor 406 stops working, it can automatically lock the position of the frame 10 to prevent the frame 10 from rotating due to its own weight; the first connecting shaft 403 and the second connecting shaft support the frame 10 from both sides, improving the stability and reliability of the frame 10's rotation.

[0033] In one specific embodiment, the rotating assembly 40 further includes a first transmission wheel 408, a second transmission wheel 409, and a transmission belt 410; the first transmission wheel 408 and the second transmission wheel 409 are respectively mounted on the ends of the worm gear 405 and the drive motor 406; the transmission belt 410 is connected to the first transmission wheel 408 and the second transmission wheel 409. During operation, the output shaft of the drive motor 406 drives the second transmission wheel 409 to rotate; the second transmission wheel 409 drives the first transmission wheel 408 to rotate via the transmission belt 410; the first transmission wheel 408 drives the worm gear 405 to rotate. The belt drive structure is simple, easy to install and maintain, and has low cost.

[0034] In one specific embodiment, the frame 10 includes an upper frame 101 and a lower frame 102; the upper frame 101 is movably mounted above the lower frame 102. In this embodiment, the upper frame 101 and the lower frame 102 are movably connected together by a latch to form a test cavity for accommodating the life jacket body 20 to be tested; when it is necessary to remove or place the life jacket body 20 to be tested, the latch is opened, and the upper frame 101 can be lifted or detached from the lower frame 102; during testing, the upper frame 101 is placed on top of the lower frame 102, and the latch is fastened to close the test cavity. By adopting a split frame structure, it is convenient to remove and place the life jacket body 20 to be tested, and the operation is simple and convenient; the latch connection is firm and reliable, which can ensure that the upper frame 101 and the lower frame 102 will not separate during the test, ensuring the safety of the test.

[0035] In one specific embodiment, a control console 502 for controlling the operation of the device is also included. The control console 502 is mounted above the base 50, located on one side of the frame 10. The control console 502 is equipped with control elements such as a power switch, start button, stop button, inflation pressure adjustment knob, water volume adjustment knob, rotation speed adjustment knob, and a display screen. Through the control console 502, testers can set various test parameters, control the start, operation, and stop of the device, and monitor various data during the test process in real time. The control console 502 enables centralized control of the entire test process, and its operation is simple and intuitive. It can accurately control test parameters such as inflation pressure, water volume, and rotation speed, ensuring the consistency and repeatability of test conditions. The display screen can display test data in real time, facilitating observation and recording of test results by testers.

[0036] The complete working process of the life jacket waterproof sealing test device of the present invention is as follows:

[0037] I. Preparation Phase: Move the device to the test position using the casters and secure it by depressing the brakes; connect the power supply and turn on the power switch on the control panel 502 to perform a self-test; after the self-test is completed, unlock the latches on the frame 10 and move the upper frame 101 away from the lower frame 102. Place the life jacket body 20 to be tested inside the test chamber of the lower frame 102; place each cuff of the life jacket body 20 to be tested onto the outside of the follower clamp 306 of the corresponding sealing clamp 30, ensuring that the cuffs are completely enclosed in the follower clamp 306. The sealing clamp 30's drive cylinder 309 is activated via the control console 502; the drive cylinder 309 pushes the movable clamp 304 toward the fixed clamp 302; during the movement, the second semi-circular clamp 305 abuts against the follower clamp 306, and drives the follower clamp 306 to move synchronously; until the two sides of the follower clamp 306 are tightly fitted with the first semi-circular clamp 303 and the second semi-circular clamp 305 respectively, pressing and sealing the life jacket cuff.

[0038] 2. Water and air filling: Set the water volume and air pressure parameters through the control panel 502; start the water inlet valve to fill the life jacket body 20 under test with the set amount of water through the water inlet 308 on the follower clamp 306; after filling with water, automatically close the water inlet valve; start the air inlet valve to fill the life jacket body 20 under test with the set pressure of gas through the air inlet 307 on the follower clamp 306; after filling with air, automatically close the air inlet valve.

[0039] III. Rotation Test: Set the rotation speed and rotation time parameters of the frame 10 through the control console 502; start the drive motor 406 of the rotating component 40; the drive motor 406 drives the worm gear 405 to rotate through the second transmission wheel 409, the transmission belt 410 and the first transmission wheel 408; the worm gear 405 drives the worm wheel 404 and the first connecting shaft 403 to rotate; the first connecting shaft 403 drives the frame 10 to rotate 360° around the horizontal axis through the first connecting plate 401; the frame 10 drives the life jacket body 20 under test to rotate synchronously, so that all parts of the life jacket can be fully tested.

[0040] IV. Leakage Detection: During the rotation of the frame 10, the tester observes whether water droplets fall into the water tray 501; if water droplets fall into the water tray 501, it indicates that there is a leak in the life jacket body 20 under test; the tester can determine the approximate location of the leak based on the position of the water droplets; at the same time, the control console 502 will record various data during the test.

[0041] V. Test Completion: After the set rotation time is reached, the drive motor 406 automatically stops running, and the frame 10 stops rotating; the exhaust valve is opened to expel the gas inside the life jacket body 20 under test; then the drain valve is opened to expel the water inside the life jacket body 20 under test; after the gas and water are completely expelled, the piston rod of the drive cylinder 309 is retracted, which drives the moving clamp 304 and the follower clamp 306 to reset, and the life jacket cuff is released; the buckle is opened, the upper frame 101 is moved away, and the life jacket body 20 that has completed the test is taken out.

[0042] VI. Follow-up procedures: Clean the water out of the water tray 501; turn off the power switch on the control panel 502 to disconnect the power; if you need to continue testing the next life jacket, repeat the above steps.

[0043] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A waterproof sealing test device for life jackets, characterized in that: It includes a frame (10), a life jacket body (20) to be tested installed inside the frame (10), a sealing clamp (30) for clamping and sealing each cuff of the life jacket body (20) to be tested, and a rotating component (40) connected to the frame (10) for driving the frame (10) to rotate. The sealing clamp (30) includes a mounting base (301), a fixed clamp (302), a movable clamp (304), a follower clamp (306), a drive cylinder (309), and a guide rod (310). The fixed clamp (302) is installed in the mounting base (301), and the clamping surface of the fixed clamp (302) is provided with a first semi-circular clamping opening (303) adapted to the cuff to be sealed. The movable clamp (304) is adjacent to the fixed clamp (302), and the clamping surface of the movable clamp (304) is provided with a second semi-circular clamping opening (305) adapted to the cuff to be sealed. The follower clamp (306) is located on the first semi-circular clamp (305) of the fixed clamp (301). Between the semi-circular clamp (303) and the second semi-circular clamp (305), the follower clamp (306) is provided with an air inlet (307) and a water inlet (308); the drive cylinder (309) is installed on the mounting base (301) and connected to the moving clamp (304) for driving the moving clamp (304) to move toward the fixed clamp (302); the guide rod (310) is installed on the mounting base (301) and connected to the follower clamp (306) for driving the follower clamp (306) to move directionally between the fixed clamp (302) and the moving clamp (304).

2. The life jacket waterproof sealing test device according to claim 1, characterized in that: It also includes a base (50); the frame (10) is mounted on the base (50); the rotating assembly (40) is mounted on the side of the frame (10).

3. The life jacket waterproof sealing test device according to claim 2, characterized in that: A water-holding tray (501) is provided below the frame (10).

4. The life jacket waterproof sealing test device according to claim 2, characterized in that: The base (50) is provided with casters.

5. The life jacket waterproof sealing test device according to claim 2, characterized in that: The rotating assembly (40) includes a first connecting plate (401), a second connecting plate (402), a first connecting shaft (403), a second connecting shaft, a worm gear (404), a worm (405), a drive motor (406), and a connecting seat (407); the first connecting plate (401) and the second connecting plate (402) are respectively connected to both sides of the frame (10); the first connecting shaft (403) is connected to the first connecting plate (401); the worm gear (404) is installed on the first connecting shaft (403); the worm (405) meshes with the worm gear (404); the drive motor (406) is connected to the worm (405) and is used to drive the worm (405) to rotate; the second connecting shaft is installed in the connecting seat (407) and is connected to the second connecting plate (402).

6. The life jacket waterproof sealing test device according to claim 5, characterized in that: The rotating assembly (40) further includes a first transmission wheel (408), a second transmission wheel (409), and a transmission belt (410); the first transmission wheel (408) and the second transmission wheel (409) are respectively mounted on the ends of the worm (405) and the drive motor (406); the transmission belt (410) is connected to the first transmission wheel (408) and the second transmission wheel (409).

7. The life jacket waterproof sealing test device according to claim 1, characterized in that: The frame (10) includes an upper frame (101) and a lower frame (102); the upper frame (101) is movably mounted above the lower frame (102).

8. The life jacket waterproof sealing test device according to claim 1, characterized in that: It also includes a control console (502) for controlling the operation of the device.

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