Waterproof performance testing device

Abstract

This invention provides a waterproof performance testing device for testing the waterproof performance of a sealed enclosure. The device includes a ring track, a movable spray assembly, and a fixed spray assembly. The ring track is positioned above the sealed enclosure. The movable spray assembly includes a movable support and a movable nozzle. The movable support is movably connected to the ring track and has a vertical track extending along a first direction, which is perpendicular or oblique to the plane of the ring track. At least a portion of the movable support can be positioned opposite the side wall of the sealed enclosure. The movable nozzle is movably mounted on the vertical track. The fixed spray assembly is positioned above the sealed enclosure and includes a fixed nozzle. The movable and fixed nozzles enclose a spray area, with the outlets of both the movable and fixed nozzles facing the spray area, which is used to place the sealed enclosure. The movable and fixed nozzles can comprehensively spray all parts of the enclosure.

Description

Technical Field

[0001] This utility model relates to the field of water tightness testing technology for enclosures, and more specifically to a waterproof performance testing device. Background Technology

[0002] Existing technologies typically verify the waterproof and sealing performance of enclosures in actual use through environmental conditions such as water immersion, spraying, or air pressure. Water immersion is inefficient, relies heavily on manual labor, and is costly; manual spraying lacks precision, is poorly applicable to complex structures, and is inefficient; air pressure methods are weak in detecting minor leaks, difficult to locate leak points, have limited efficiency, and pose safety risks.

[0003] Therefore, there is a need to provide a waterproof performance testing device to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a waterproof performance testing device for testing the waterproof performance of a sealed enclosure. The waterproof performance testing device includes:

[0006] A circular track can be installed above the sealed enclosure;

[0007] At least one set of mobile spray assembly, the mobile spray assembly comprising:

[0008] A movable support is movably connected to the annular track. The movable support has a vertical track extending along a first direction, which is perpendicular to or oblique to the plane of the annular track. At least a portion of the movable support can be disposed opposite to the side wall of the sealed box.

[0009] The movable nozzle is movably mounted on the vertical track;

[0010] A fixed spray assembly can be installed above the sealed box, and the fixed spray assembly includes a fixed nozzle;

[0011] The movable nozzle and the fixed nozzle define a spraying area, and the outlets of the movable nozzle and the fixed nozzle both face the spraying area, which is used to house the sealed box.

[0012] According to the waterproof performance testing device of the first aspect of this utility model, the outlets of both the movable and fixed nozzles face the spraying area, ensuring that the sprayed water flow is concentrated on the sealed chamber, improving the intensity and uniformity of the spray, making the test results more accurately reflect the waterproof performance of the sealed chamber, and allowing precise control of the spraying range. By setting up a circular track, a movable nozzle that can move along the vertical track, and a fixed nozzle located above the sealed chamber, spraying of the sealed chamber from different directions and heights is achieved. The movable nozzle can move along the circular track, changing its position horizontally, and simultaneously adjusts its vertical position by moving along the vertical track; the fixed nozzle sprays from a fixed position above. This multi-dimensional spraying can more comprehensively simulate various water spraying conditions that may be encountered in actual use, improving the accuracy and reliability of the test. The combination of the movable and fixed nozzles allows for comprehensive spraying of all parts of the chamber, including easily overlooked areas such as seams and grooves, effectively solving the problems of insufficient accuracy and easily overlooked areas in manual spraying methods. In the design, the fixed nozzle is used to test the overall waterproofness of the sealed enclosure, while the movable nozzle is used to test the waterproofness of the gaps and rivets in the sealed enclosure.

[0013] Optionally, the annular track has an I-shaped cross-section, including a web, an upper flange connected to the upper end of the web, and a lower flange connected to the lower end of the web;

[0014] In the cross-section of the annular track, the web extends along the height direction of the annular track, and the flange extends along the width direction of the annular track.

[0015] Optionally, the movable support is provided with a first set of wheels, which can slide along the upper side of the lower flange to drive the support to move along the annular track. The two sets of first wheels are respectively located on both sides of the annular track.

[0016] Optionally, each set of the first wheel group includes at least one auxiliary axle.

[0017] Optionally, the outer peripheral surface of each of the auxiliary shafts is adapted to the shape of the upper side surface of the lower flange.

[0018] Optionally, the central axis of each of the auxiliary shafts is parallel to the width direction.

[0019] Optionally, the first wheel assembly includes two auxiliary shafts, which are spaced apart along a second direction, and the second direction, the width direction, and the height direction are perpendicular to each other.

[0020] The movable support is provided with a drive wheel, and the drive wheel satisfies at least one of the following conditions:

[0021] Optionally, along the second direction, the drive wheel is located between the two auxiliary shafts, and the drive wheel is used to drive the two auxiliary shafts to rotate synchronously.

[0022] Optionally, along the height direction, the drive wheel is higher than the auxiliary shaft.

[0023] Optionally, the drive wheel is engaged with each of the two auxiliary shafts.

[0024] Optionally, the movable support is equipped with a first motor, and the drive wheel is directly connected to or driven to the motor shaft of the first motor.

[0025] Optionally, the movable support is provided with a second set of wheels, which can slide along the vertical surface of the web.

[0026] Optionally, the two sets of the second wheel sets are respectively located on both sides of the circular track, facing each other and spaced apart along the width direction.

[0027] Optionally, the second wheel set is higher than the first wheel set along the height direction.

[0028] Optionally, each set of the second wheel group includes 1-3 rotating members, which are rotatably connected to the movable support and are capable of sliding along the vertical surface of the web.

[0029] Optionally, the movable support is provided with a third set of wheels, which can slide along the outer side of the lower flange.

[0030] Optionally, the two sets of the third wheel sets are located on opposite sides of the circular track.

[0031] Optionally, each group of the third wheel sets includes two rotating members spaced apart along a second direction. Along the second direction, the first wheel set is located between the two rotating members of the third wheel set.

[0032] Optionally, the first wheel set is higher than the third wheel set along the height direction.

[0033] Optionally, the mobile spraying mechanism further includes:

[0034] The first gear and the second gear are spaced apart along the vertical direction on the vertical track;

[0035] The second motor has its motor shaft directly connected to or driven to one of the first gear and the second gear;

[0036] A chain, connected to the first gear and the second gear, and capable of moving with the rotation of either the first gear or the second gear;

[0037] The mounting base is connected to the chain and is movable as the chain moves, and the movable nozzle is mounted to the mounting base.

[0038] Optionally, the mobile spraying mechanism further includes a claw connected to the mounting base, and the claw is engaged with the chain;

[0039] The movable nozzle includes:

[0040] The first nozzle is fixedly connected to the mounting base;

[0041] The second nozzle is rotatably connected to the mounting base about a first rotating shaft, the central axis of which is perpendicular to or oblique to the height direction.

[0042] Optionally, the water flow rate of the movable nozzle is 10L / min to 15L / min.

[0043] Optionally, the water pressure of the movable nozzle is 0.15 MPa to 0.25 MPa.

[0044] Optionally, the inner diameter of the outlet of the movable nozzle is 6mm to 6.5mm.

[0045] Optionally, the distance between the outlet end of the movable nozzle and the side wall of the sealed box is 2.5m to 3m.

[0046] Optionally, the mobile nozzle sprays water for 50 to 70 seconds per square meter on the sealed enclosure.

[0047] Optionally, the moving speed of the moving nozzle is 90 mm / s to 110 mm / s.

[0048] Optionally, the number of movable nozzles is 2 to 12.

[0049] Optionally, the fixed spray assembly is configured as 4 groups.

[0050] Optionally, the number of fixed nozzles in each group of fixed spray assemblies is 2 to 20.

[0051] Optionally, the four sets of fixed spray assemblies are respectively configured to correspond to the four side walls of the sealed box.

[0052] Optionally, the water pressure of the fixed nozzle is 0.03 MPa to 0.04 MPa.

[0053] Optionally, the interval between water sprays from the fixed nozzle is 50 to 70 minutes.

[0054] Optionally, the spacing between the fixed spray heads in the same fixed spray assembly is 700mm to 750mm.

[0055] Optionally, the distance between the fixed nozzle and the top wall of the sealed box is 900mm to 1100mm.

[0056] Optionally, the fixed nozzle is positioned above the highest point of the movable nozzle on the vertical track.

[0057] Optionally, the waterproof performance testing device is installed inside the water shower room, the annular track is installed on the top of the water shower room, and the fixed spray assembly is installed on the top of the water shower room via a top bracket.

[0058] Optionally, the waterproof performance testing device is installed inside the water spray chamber, and the fixed spray assembly is installed on the side wall of the water spray chamber. Attached Figure Description

[0059] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0060] Figure 1 This is a front view schematic diagram of a waterproof performance testing device according to a preferred embodiment of the present invention;

[0061] Figure 2 This is a top view schematic diagram of a preferred embodiment of the waterproof performance testing device of this utility model;

[0062] Figure 3 This is a front view schematic diagram of a preferred embodiment of the mobile spray assembly of the present invention;

[0063] Figure 4 This is a side view of a preferred embodiment of the mobile spray assembly of the present invention.

[0064] Figure 5 This is a top view schematic diagram of a preferred embodiment of the movable support of the present invention;

[0065] Figure 6 This is a side view of a preferred embodiment of the movable support of the present invention.

[0066] Figure 7 This is a front view schematic diagram of a preferred embodiment of the movable support of the present invention;

[0067] Figure 8 This is a front view schematic diagram of a preferred embodiment of the movable nozzle of the present invention;

[0068] Figure 9This is a side view of a preferred embodiment of the movable nozzle of the present invention.

[0069] Figure 10 This is a top view schematic diagram of a preferred embodiment of the movable nozzle of this utility model.

[0070] Explanation of reference numerals in the attached figures

[0071] 10: Circular track

[0072] 11: Web

[0073] 12: Upper wing edge

[0074] 13: Lower wing edge

[0075] 20: Mobile Sprinkler Components

[0076] 21: Mobile stand

[0077] 22: Vertical track

[0078] 23: Moving nozzle

[0079] 231: First nozzle

[0080] 232: Second nozzle

[0081] 24: First Round Group

[0082] 241: Auxiliary shaft

[0083] 25: Second Round Group

[0084] 26: Third Round Group

[0085] 27: Drive wheel

[0086] 28: First Motor

[0087] 29: Second motor

[0088] 30: First Gear

[0089] 31: Second Gear

[0090] 32: Chain

[0091] 33: Mounting bracket

[0092] 331: Slide

[0093] 332: First pivot

[0094] 34: Claw

[0095] 40: Fixed spray assembly

[0096] 41: Fixed nozzle

[0097] 50: Water Spray Room

[0098] 60: Sealed enclosure

[0099] DW: Width direction

[0100] DH: Altitude

[0101] D1: First Direction

[0102] D2: Second Direction Detailed Implementation

[0103] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0104] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0105] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0106] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0107] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0108] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0109] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0110] Existing technologies typically verify the waterproof and sealing performance of the enclosure in actual use through environmental conditions such as water immersion, spraying, or air pressure.

[0111] The water immersion test is a traditional method for verifying waterproof sealing performance. Its core principle is to completely immerse the container under test in water and visually observe whether bubbles are generated to determine if there is leakage. While intuitive, this method has significant drawbacks: First, its testing efficiency is extremely low, requiring complete immersion and observation for over 30 minutes per unit, making it unsuitable for high-speed automated production lines. Second, it is highly dependent on manual labor; test results are affected by operator fatigue and viewing angle errors, resulting in a false negative rate exceeding 15%. Third, it presents significant environmental and cost issues, consuming large amounts of pure water that needs regular replacement to prevent contamination. Post-test drying or wiping processes further extend the production cycle and increase costs.

[0112] The manual spraying method simulates a water-spraying environment by applying a certain water pressure (usually 30-100 kPa) to the surface of the enclosure using spraying equipment for testing. It is suitable for quickly verifying the overall sealing performance. However, its testing capabilities have significant limitations: Firstly, the testing accuracy is insufficient, as the spraying angle and water pressure coverage are limited, easily missing areas such as seams and grooves. It also cannot identify minute leaks (such as the seepage rate of micropores <0.05 mm, which is lower than the spraying impact force and easily masked by the water flow), with a measured missed detection rate exceeding 10%. Secondly, its applicability is limited; complex structures such as curved surfaces and internal cavities are difficult to detect effectively because the water flow cannot cover them evenly. In addition, the testing process involves multiple steps, including spraying, settling, disassembly, and drying, with a single-piece testing time exceeding 30 minutes, resulting in low efficiency and making it difficult to adapt to the needs of automated production lines.

[0113] The air pressure testing method assesses sealing performance by monitoring changes in air pressure inside and outside the chamber. While offering advantages such as non-contact and quantifiable testing, it suffers from several technical limitations: First, it lacks the ability to detect minute leaks, with an error rate as high as 35% for leaks with a 0.1mm pore diameter. Furthermore, slow leaks are easily misjudged as no leaks when the testing time is less than 30 seconds. Second, it cannot precisely locate leak points, only assessing overall sealing. Additional methods such as the soap bubble method are needed to pinpoint leaks, increasing process complexity and potentially interfering with the assessment when multiple leaks coexist. Third, testing efficiency is limited by pressure stabilization time (each test requires 5-10 minutes to allow pressure to stabilize), making it unsuitable for high-speed production lines. Fourth, it presents significant safety risks; test pressures exceeding 50kPa may cause structural damage to weak points in the chamber.

[0114] The sealed enclosure 60 can be an energy storage enclosure. The enclosure has four circumferential side walls, one top wall, and one bottom wall.

[0115] Reference Figure 1 and Figure 2 This utility model provides a waterproof performance testing device. Optionally, the waterproof performance testing device can be installed inside a water shower room 50 to ensure that the waterproof performance testing device is relatively independent from the outside environment during testing, thereby enhancing water flow management. A testing chamber is formed inside the water shower room 50. A sealed box 60 is placed inside the testing chamber.

[0116] The waterproof performance testing device includes a ring track 10, a movable spray assembly 20, and a fixed spray assembly 40. Optionally, the ring track 10 is located at the top of the test chamber. The movable spray mechanism includes a movable support 21 and a movable nozzle 23. The movable support 21 is movably connected to the ring track 10 and has a vertical track 22 extending along a first direction D1. The first direction D1 is perpendicular to or oblique to the plane of the ring track 10, and at least a portion of the movable support 21 can be positioned opposite to the side wall of the sealed chamber 60. Optionally, the first direction D1 is perpendicular to the plane of the ring track 10, i.e., the first direction D1 is parallel to the height direction DH. The movable nozzle 23 is movably mounted on the vertical track 22. The fixed spray assembly 40 can be positioned above the sealed chamber 60 and includes a fixed nozzle 41. The movable nozzle 23 and the fixed nozzle 41 define the spraying area. The outlets of both the movable nozzle 23 and the fixed nozzle 41 face the spraying area, which is used to house the sealed enclosure 60. The fact that the outlets of both the movable nozzle 23 and the fixed nozzle 41 face the spraying area ensures that the sprayed water flow is concentrated on the sealed enclosure 60, improving the intensity and uniformity of the spray. This allows the test results to more accurately reflect the waterproof performance of the sealed enclosure 60 and enables precise control of the spraying range. By using a circular track 10, a movable nozzle 23 that can move along a vertical track 22, and a fixed nozzle 41 located above the sealed enclosure 60, spraying of the sealed enclosure 60 from different directions and heights is achieved. The movable nozzle 23 can move along the circular track 10, changing its position horizontally, and can also move along the vertical track 22 to adjust its vertical position. The fixed nozzle 41 sprays water from a fixed position above. This multi-dimensional spraying can more comprehensively simulate various water spraying conditions that may be encountered in actual use, improving the accuracy and reliability of the test. The combination of the movable nozzle 23 and the fixed nozzle 41 can comprehensively spray all parts of the enclosure, including easily overlooked areas such as seams and grooves, effectively solving the problems of insufficient accuracy and easily overlooked areas in the manual spraying method. In this scheme, the fixed nozzle 41 is used for overall waterproof testing of the sealed enclosure 60, while the movable nozzle 23 is used for waterproof testing of the gaps and rivets of the sealed enclosure 60.

[0117] This comprehensive, multi-angle spraying method enables more precise identification of minute leaks, overcoming the limitation of manual spraying methods in detecting such leaks (e.g., micropores <0.05mm). Compared to water immersion testing, which requires complete immersion and observation for over 30 minutes per item, and manual spraying, which takes over 30 minutes per item, this device optimizes the spraying method, reducing unnecessary standing and drying steps, effectively shortening the inspection time per item and better meeting the needs of high-speed automated production lines. Compared to air pressure testing, which requires 5-10 minutes to stabilize pressure per test, affecting efficiency, this spraying method eliminates the need for pressure stabilization, further improving efficiency. Compared to water immersion testing, which is highly dependent on manual labor and whose results are affected by operator fatigue and viewing angle errors, resulting in a false negative rate exceeding 15%, this mechanized spraying method reduces manual observation and operation, lowering errors and false negative rates caused by human factors. Compared to water immersion testing, which consumes large amounts of pure water and requires regular replacement to prevent contamination, and necessitates drying processes such as drying or wiping after testing, increasing costs and production cycles, this device uses spray testing. It eliminates the need for large amounts of pure water and complex drying processes, saving water resources and reducing costs. Compared to air pressure testing, which cannot accurately locate leaks and requires additional auxiliary methods such as soap bubble testing, making the process complex, this device uses comprehensive spray testing to more intuitively determine the leak location upon detection, simplifying the testing process by eliminating the need for additional complex leak location procedures. Compared to air pressure testing, which may cause structural damage to weak points in the enclosure when the test pressure exceeds 50 kPa, this device uses spray testing, avoiding excessive pressure on the enclosure and preventing structural damage due to excessive pressure, thus improving testing safety.

[0118] Refer to 3 and Figure 4 The circular track 10 has an I-shaped cross-section, consisting of a web 11, an upper flange 12, and a lower flange 13. The web 11 extends along the height direction DH of the circular track 10, connecting the upper and lower flanges 13 and providing structural support for the entire track. The upper flange 12 and lower flange 13 are connected to the upper and lower ends of the web 11, respectively, and extend along the width direction DW of the circular track 10, providing a sliding surface for the wheel assembly of the movable support 21. The circular track 10 is a closed structure, employing a precision splicing process to ensure track closure accuracy and prevent shaking or jamming of the movable support 21 during operation. The circular track 10 is made of hot-dip galvanized I-beam steel to enhance load-bearing capacity and provide corrosion and rust resistance. In this design, a laser level is used to ensure the overall level of the circular track 10 (error ≤ ±1mm / m), preventing the movable support 21 from shifting due to tilting.

[0119] The movable support 21 is equipped with a first wheel set 24, which can slide along the upper side of the lower flange 13 to drive the support to move along the annular track 10. There are two sets of first wheel sets 24, located on both sides of the annular track 10. That is, along the width direction DW of the annular track 10, the two sets of first wheel sets 24 are located on both sides of the web plate 11.

[0120] Each first wheel assembly 24 includes at least one auxiliary shaft 241. The outer peripheral surface of the auxiliary shaft 241 is adapted to the shape of the upper side surface of the lower flange 13 to ensure that the auxiliary shaft 241 can slide smoothly on the upper side surface of the lower flange 13. Optionally, the upper side surface of the lower flange 13 is an inclined surface, and the outer peripheral surface of the auxiliary shaft 241 is a frustum-shaped structure adapted to the inclined surface.

[0121] The central axis of each auxiliary shaft 241 is parallel to the width direction DW. During the sliding process along the upper side of the lower flange 13 of the annular track 10, the auxiliary shaft 241 ensures that its direction of movement is highly consistent with the track's design direction. If the central axis of the auxiliary shaft 241 is tilted, a lateral force will be generated during movement, causing the moving support 21 to sway or deviate from the annular track 10. The parallel design effectively avoids this lateral force, making the movement of the moving support 21 on the annular track 10 smoother and more stable. This ensures that the moving nozzle 23 can operate stably along the set trajectory, improving the uniformity and stability of the spray, thereby enhancing the accuracy of waterproofing testing.

[0122] Optionally, each set of first wheel groups 24 includes two auxiliary shafts 241. The two auxiliary shafts 241 are spaced apart along a second direction D2 (i.e., the extension direction of the track, i.e., the second direction D2 is parallel to the horizontal plane), thus forming a stable support structure in the second direction D2. When one auxiliary shaft 241 is subjected to a lateral force, the other auxiliary shaft 241 can provide a reverse supporting force, thereby balancing the lateral force, reducing the lateral sway of the moving support 21, and making the movement smoother. Simultaneously, during movement, the two auxiliary shafts 241 jointly contact the upper side of the lower flange 13 of the annular track 10, forming multi-point support, ensuring that the moving support 21 always moves along the predetermined track direction, while also avoiding local stress concentration, improving the accuracy and stability of the movement.

[0123] To drive the first wheel assembly 24, the movable support 21 is also equipped with a drive wheel 27. Along the second direction D2, the drive wheel 27 is located between two auxiliary shafts 241, and is used to drive the two auxiliary shafts 241 to rotate synchronously. Because the drive wheel 27 is located in the middle of the two auxiliary shafts 241, it can evenly transmit the driving force to the auxiliary shafts 241 on both sides during rotation. This symmetrical power transmission method avoids the situation where one auxiliary shaft 241 experiences excessive force while the other experiences insufficient force due to uneven power distribution, ensuring that both auxiliary shafts 241 receive relatively balanced power input, thereby smoothly and effectively driving the movable support 21 to move. Due to the uniform power transmission, additional energy loss caused by localized stress concentration or uneven friction between components is reduced. The transmission between the drive wheel 27 and the two auxiliary shafts 241 is smoother, improving power transmission efficiency, allowing the energy provided by the drive device to be more fully converted into the kinetic energy of the movable support 21, thus reducing energy consumption.

[0124] The drive wheel 27 is meshed with two auxiliary shafts 241, ensuring that the two auxiliary shafts 241 rotate synchronously at the same speed and direction. This synchronicity is crucial for the smooth movement of the movable support 21 on the circular track 10. It avoids torsional forces caused by the different speeds of the auxiliary shafts 241 on both sides, preventing the movable support 21 from tilting or jamming, and allowing the movable support 21 to move accurately and smoothly along the predetermined track direction. Since the drive wheel 27 can control the rotation of the two auxiliary shafts 241 simultaneously, precise control of the moving speed of the movable support 21 can be achieved simply by precisely adjusting the speed of the drive wheel 27.

[0125] Along the height direction DH, the drive wheel 27 is higher than the auxiliary shaft 241. This makes full use of the space of the movable bracket 21 in the height direction DH, making the layout of each component more compact and reasonable. At the same time, the transmission angle between the drive wheel 27 and the auxiliary shaft 241 can be adjusted to make the meshing transmission smoother and more efficient, ensuring that the power of the drive wheel 27 can be fully and stably transmitted to the auxiliary shaft 241, thereby driving the movable bracket 21 to move smoothly.

[0126] According to this scheme, uniform power transmission and synchronous rotation reduce the relative friction and wear between the auxiliary shaft 241 and the track, and between the auxiliary shaft 241 and the drive wheel 27. All components operate in a smooth and coordinated motion state, reducing wear and extending the service life of key components such as the auxiliary shaft 241, drive wheel 27, and track, thereby reducing equipment maintenance costs and downtime. Specifically, the drive wheel 27 is driven by a first motor 28, which is connected to the drive wheel 27 via a direct connection or transmission connection, ensuring that the drive wheel 27 receives sufficient driving force and reducing slippage caused by insufficient power transmission.

[0127] As previously stated, in some embodiments, the first motor 28 is directly connected to the drive wheel 27. Specifically, the drive wheel 27 is directly connected to the motor shaft of the first motor 28. The power transmission path is simple, and the kinetic energy output by the motor can be transmitted to the drive wheel 27 with almost no loss, thereby improving energy utilization efficiency.

[0128] In other embodiments, the drive wheel 27 is connected to the motor shaft of the first motor 28. Specifically, through transmission connection components such as gear transmission and coupling, the efficiency and stability of power transmission can be ensured, and the drive wheel 27 can obtain stable and sufficient power to make the moving bracket 21 move smoothly.

[0129] The movable support 21 is also equipped with a second wheel set 25, which can slide along the vertical surface of the web 11. The second wheel set 25 increases the number of support points of the movable support 21, making the movable support 21 more stable when bearing a large load.

[0130] Two sets of second wheel groups 25 are respectively located on both sides of the circular track 10, facing each other and spaced apart along the width direction DW. That is, along the width direction DW of the circular track 10, the two sets of second wheel groups 25 are located on both sides of the web plate 11. During track installation, since the second wheel groups 25 also have a certain sliding adjustment capability, the installation accuracy requirements of the track can be appropriately reduced. Even if there is a certain installation error in the track or the moving support 21, it can be adapted and adjusted through the cooperation of the first wheel group 24 and the second wheel group 25, reducing the problem of the moving support 21 not running smoothly due to inaccurate track installation, and facilitating the installation and debugging of the track.

[0131] Along the height direction, the second wheel group 25 is higher than the first wheel group 24. As mentioned above, the first wheel group 24 is used to contact the lower flange 13, and the second wheel group 25 is used to contact the web plate 11. The arrangement between the second wheel group 25 and the first wheel group 24 is reasonable.

[0132] Each group of second wheel sets 25 includes 1-3 rotating members. The rotating members are rotatably connected to the movable support 21. The central axis of the rotating member is parallel to the elevation of the web 11 (specifically, the rotating members of the second wheel set 25 are parallel to the height direction DH). The rotating members of the same group of second wheel sets 25 are symmetrically arranged. For example, refer to... Figure 4 When there is only one rotating component, in the projection along the height direction DH, the rotating component is located between the two auxiliary shafts 241. (Refer to...) Figures 5 to 7 When there are two rotating parts, in the projection along the height direction DH, the two rotating parts are located on both sides of the two auxiliary shafts 241. Optionally, the projection portions of the rotating parts and the auxiliary shafts 241 coincide.

[0133] Continue to refer to Figures 5 to 7The movable support 21 is also equipped with a third wheel set 26, which can slide along the outer side of the lower flange 13. The sliding of the third wheel set 26 along the outer side of the lower flange 13 adds an extra layer of protection against derailment for the movable support 21. Two sets of third wheel sets 26 are located on both sides of the annular track 10. That is, along the width direction DW of the annular track 10, two sets of second wheel sets 25 are located on both sides of the lower flange 13.

[0134] Each third wheel group 26 includes two rotating members spaced apart along the second direction D2, with the third wheel group 26 located between the two rotating members along the second direction D2. That is, in the projection along the height direction DH, the third wheel group 26 is located between the two rotating members. Placing the third wheel group 26 between the two second wheel groups 25 can make full use of the space around the track, making the structure of the entire movable support 21 more compact.

[0135] Along the height direction DH, the first wheel group 24 is higher than the third wheel group 26. As mentioned above, the first wheel group 24 is used to contact the upper side of the lower flange 13, and the third wheel group 26 contacts the outer side of the lower flange 13. The arrangement between the third wheel group 26 and the first wheel group 24 is reasonable.

[0136] In this design, the first wheel group 24 undertakes the main movement and partial support functions, rolling on the track surface to guide the support forward along the track direction. The second wheel group 25 slides along the vertical surface of the web 11, constraining the movement of the support in the direction perpendicular to the track (lateral direction). The third wheel group 26 slides along the outer side of the lower flange 13, further limiting the offset of the support relative to the track in the horizontal plane. The three wheels work together to constrain the support from different directions, effectively reducing the swaying, swinging, and lateral offset of the moving support 21 during movement, making the movement smoother. The three wheel groups form multiple support points between the moving support 21 and the circular track 10, thereby dispersing stress and reducing the stress intensity of a single wheel group.

[0137] Back Figures 3 to 4The mobile spraying mechanism also includes a first gear 30, a second gear 31, a second motor 29, a chain 32, and a mounting base 33. The first gear 30 and the second gear 31 are spaced apart along the vertical track 22 at a distance DH. The motor shaft of the second motor 29 is directly connected to or driven to one of the first gear 30 and the second gear 31. The chain 32 is connected to the first gear 30 and the second gear 31 and moves by the rotation of one of them. The mounting base 33 is connected to the chain 32 and can reciprocate up and down along the vertical track 22 as the chain 32 moves. The mobile spray head 23 is mounted on the mounting base 33. The second motor 29, through the transmission system of the gears and chain 32, can stably control the moving speed of the chain 32, thereby allowing the mobile spray head 23 on the mounting base 33 to move at a relatively stable speed along the vertical track 22. The mobile spray head 23 mounted on the mounting base 33 can perform spraying operations over a large height range, effectively expanding the vertical coverage area of ​​a single spraying operation.

[0138] In the above scheme, the chain 32 transmission is continuous. The second motor 29 continuously drives the gear to rotate, and the chain 32 drives the nozzle to move continuously, achieving uninterrupted spraying operation and improving work efficiency. By changing the rotation direction and number of rotations of the second motor 29, the movement direction and distance of the chain 32 can be precisely controlled, thereby flexibly adjusting the position of the moving nozzle 23 on the vertical track 22. Optionally, multiple moving nozzles 23 can be installed on one chain 32.

[0139] Reference Figures 8 to 10 The mobile spray mechanism also includes a claw 34 connected to the mounting base 33, and the claw 34 is engaged with the chain 32. The engagement of the claw 34 with the chain 32 ensures the smoothness and accuracy of the movement of the mounting base 33 driven by the chain 32. During vertical movement, the spray head can move at a relatively constant speed, resulting in a uniform vertical distribution of water volume sprayed per unit time.

[0140] The movable sprinkler head 23 includes a first sprinkler head 231 and a second sprinkler head 232. The first sprinkler head 231 is fixedly connected to the mounting base 33. The second sprinkler head 232 is rotatably connected to the mounting base 33 about a first rotating shaft 332, the central axis of which is perpendicular to or oblique to the height direction DH. The rotatable function of the second sprinkler head 232 provides more options and flexibility for spraying operations. Depending on different needs, the first sprinkler head 231 and the second sprinkler head 232 can be set to different angles.

[0141] For example, the mounting base 33 is provided with an arc-shaped groove 331, which provides precise trajectory restriction for the rotation of the second nozzle 232. One end of the second nozzle 232 is rotatably connected to the mounting base 33 about the first rotating shaft 332, and the other end of the second nozzle 232 is slidably connected to the groove 331. The center of the groove 331 is collinear with the central axis of the first rotating shaft 332. Because the center of the groove 331 is collinear with the central axis of the first rotating shaft 332, the second nozzle 232 can be confined to any position in the groove 331 by fasteners, and the connection between the second nozzle 232 and the mounting base 33 is stable.

[0142] Under the joint control of the first motor 28 and the second motor 29, the moving nozzle 23 moves along the preset box-shaped gap trajectory of the sealed box 60 to ensure that the spray path accurately covers the target area and completes a complete automated spraying operation.

[0143] The parameters of the moving nozzle 23 are explained further below.

[0144] The water flow rate of the movable nozzle 23 is 10L / min to 15L / min. The water flow rate of the movable nozzle 23 can be, but is not limited to, 10L / min, 11L / min, 12L / min, 12.5L / min, 13L / min, 14L / min, and 15L / min. This limited range ensures that sufficient water is sprayed onto the tank surface per unit time, forming a relatively uniform water film for effective testing of the tank's waterproof performance. If the flow rate is too low, sufficient water pressure and water film cannot be formed, making it difficult to detect minor leaks; if the flow rate is too high, water resources will be wasted, and the excessive water flow impact may mask minor leaks, increasing subsequent treatment costs. This flow rate range balances testing effectiveness and resource utilization, improving both the accuracy and economy of the testing.

[0145] The water pressure of the movable nozzle 23 ranges from 0.15 MPa to 0.25 MPa. The water pressure of the movable nozzle 23 can be, but is not limited to, 0.15 MPa, 0.18 MPa, 0.2 MPa, 0.22 MPa, and 0.25 MPa. Different pressures can simulate different usage environments and water flow impact conditions. Lower water pressure can be used to test the sealing performance of the enclosure under normal water spray conditions, while higher water pressure can simulate harsher environments and test the waterproof performance of the enclosure under strong water flow impact, especially helpful in detecting minute leaks and improving the comprehensiveness and reliability of the test.

[0146] The inner diameter of the outlet of the movable nozzle 23 is 6mm to 6.5mm. The inner diameter of the outlet of the movable nozzle 23 can be, but is not limited to, 6mm, 6.1mm, 6.2mm, 6.3mm, 6.4mm, and 6.5mm. The size of the outlet inner diameter directly affects the jet pattern and velocity of the water flow. A suitable inner diameter allows the water flow to form a relatively concentrated jet while ensuring a certain coverage area. If the inner diameter is too small, the water flow is too concentrated, the coverage area is small, and the detection efficiency is low; if the inner diameter is too large, the water flow is dispersed, the impact force is weakened, and it is not conducive to detecting minute leaks. This inner diameter range allows the water flow to cover a suitable area while ensuring a certain impact force, improving detection efficiency and accuracy.

[0147] The distance between the outlet end of the movable nozzle 23 and the side wall of the sealed housing 60 is 2.5m to 3m. The distance can be, but is not limited to, 2.5m, 2.6m, 2.7m, 2.8m, 2.9m, and 3m. This distance is set to ensure that the water flow from the nozzle can evenly cover the surface of the housing, while avoiding water reflection due to excessive distance or water dispersion due to excessive distance. If the distance is too small, the water flow may interfere with detection due to reflection; if the distance is too large, the water flow may be too dispersed when it reaches the housing, making it impossible to effectively detect leaks.

[0148] The mobile nozzle 23 sprays water for 50-70 seconds per square meter on the sealed chamber 60. The spraying time can be, but is not limited to, 50s, 53s, 55s, 60s, 65s, 68s, and 70s. The spraying time per square meter determines the amount of water received per unit area of ​​the chamber surface and the duration of water flow. If the spraying time is too short, the chamber surface cannot fully receive the water flow impact, potentially missing minor leaks; if the spraying time is too long, it increases the detection time and reduces efficiency. This time range ensures that the chamber surface is adequately inspected while also balancing detection efficiency.

[0149] The moving speed of the movable nozzle 23 is 90 mm / s to 110 mm / s. The moving speed of the movable nozzle 23 can be, but is not limited to, 90 mm / s, 95 mm / s, 100 mm / s, 105 mm / s, and 110 mm / s. The moving speed affects the uniformity and comprehensiveness of the nozzle's coverage of different parts of the chamber. A suitable speed allows the nozzle to continuously and uniformly spray the chamber surface during its movement. Too high a speed may result in insufficient spraying in some areas; too slow a speed will lead to excessively long inspection times. This speed range allows the nozzle to complete the all-around spray inspection of the chamber within a reasonable time, ensuring the uniformity and efficiency of the inspection.

[0150] The number of movable spray heads 23 ranges from 2 to 12. The number of movable spray heads 23 can be, but is not limited to, 2, 3, 4, 6, 8, or 12. The number of movable spray heads 23 is determined based on the area of ​​the container sidewalls and the inspection requirements, with the aim of comprehensively spraying and inspecting the sidewalls of the sealed container 60. Too few spray heads will not cover the entire side area, potentially leading to blind spots; too many spray heads will increase cost and equipment complexity. For example, in an 8-foot container, the number of movable spray heads 23 is 2 to 4. In a 20-foot container, the number of movable spray heads 23 is 4 to 6. In a 40-foot container, the number of movable spray heads 23 is 6 to 12. In this solution, one movable spray head 23 can correspond to one or more sidewalls, or multiple movable spray heads 23 can share a single sidewall.

[0151] The parameters of the fixed nozzle 41 will be further explained below.

[0152] The fixed spray assembly 40 is configured as 4 sets. The 4 sets of fixed spray assemblies 40 are respectively used to correspond to the 4 side walls of the sealed box 60.

[0153] Each fixed spray assembly 40 has 2 to 20 fixed nozzles 41. The number of fixed nozzles 41 can be 2, 3, 4, 7, 8, 10, 14, 16, or 20. The number of fixed nozzles 41 is determined based on the area of ​​the container's sidewalls and the inspection requirements, with the aim of providing comprehensive spray inspection of the container's top. Too few nozzles will not cover the entire top area, potentially leading to blind spots; too many nozzles will increase cost and equipment complexity. 2 to 20 fixed nozzles 41 allow for reasonable control of cost and equipment scale while ensuring comprehensive inspection. For example, in an 8-foot container, the number of fixed nozzles 41 is 2 to 4. In a 20-foot container, the number of fixed nozzles 41 is 7 to 10. In a 40-foot container, the number of fixed nozzles 41 is 14 to 20.

[0154] The water pressure of the fixed nozzle 41 is 0.03 MPa to 0.04 MPa. The water pressure can be, but is not limited to, 0.03 MPa, 0.032 MPa, 0.0345 MPa, 0.036 MPa, 0.038 MPa, and 0.04 MPa. The fixed nozzle 41 is mainly used for spraying water onto the top of the chamber. Its relatively low water pressure meets the needs of top spraying while avoiding unnecessary pressure on the chamber. This water pressure range can form a relatively uniform water curtain, covering the top area and testing the top's sealing performance. If the water pressure is too high, it may cause water splashing, affecting the testing environment and increasing energy consumption; if the water pressure is too low, an effective water curtain cannot be formed, affecting the testing results.

[0155] The spraying time of the fixed nozzle 41 is 50 to 70 minutes. The spraying time can be, but is not limited to, 50, 55, 60, 65, and 70 minutes. A longer spraying time allows the top area to continuously receive water flow, increasing the probability of detecting minor leaks and ensuring the reliability of the detection. If the spraying time is too short, some hidden leaks may not be detected.

[0156] The spacing between the fixed nozzles 41 of the same fixed spray assembly 40 is 700mm to 750mm. The spacing between the nozzles can be, but is not limited to, 700mm, 710mm, 720mm, 730mm, 740mm, and 750mm. This range ensures that the spray areas of the fixed nozzles 41 are interconnected, avoiding blind spots and guaranteeing uniform spraying. Too small a spacing would result in overly dense nozzle arrangement, increasing costs and potentially causing interference; too large a spacing would prevent some areas from being effectively sprayed. This spacing range allows for reasonable coverage of the spray areas between the fixed nozzles 41, improving the comprehensiveness of the inspection.

[0157] The distance between the fixed nozzle 41 and the sealed enclosure 60 is 900mm to 1100mm. The distance can be, but is not limited to, 900mm, 950mm, 1000mm, 1050mm, and 1100mm. This range ensures that the fixed nozzle 41 can effectively spray the top edge area of ​​the enclosure and the connection points with the side walls, guaranteeing that these critical areas are adequately inspected. A suitable distance allows the fixed nozzle 41 to cover easily leak-prone areas such as the connection points between the top and side walls, improving inspection accuracy. If the distance is too large, these areas may not receive sufficient spray, affecting the inspection results; if the distance is too small, it may result in an unreasonable equipment layout and increased costs.

[0158] In this scheme, each branch of the moving nozzle 23 and the fixed nozzle 41 is controlled by an independent electric regulating valve.

[0159] Optionally, the fixed nozzle 41 is positioned higher than the highest point of the movable nozzle 23 on the vertical track 22. The fixed nozzle 41, in conjunction with the movable nozzle 23, can comprehensively spray the sealed chamber 60 for testing.

[0160] Optionally, the waterproof performance testing device is installed inside the water shower chamber 50, the annular track 10 is installed on the top of the water shower chamber 50, and the fixed spray assembly 40 is installed on the top of the water shower chamber 50 via a top bracket. Projected along the height direction DH, the fixed nozzle 41 is located within the annular track 10. That is, projected along the height direction DH, the fixed nozzle 41 is located within the area enclosed by the annular track 10.

[0161] Alternatively, the waterproof performance testing device is installed inside the water shower room 50, and the fixed spray assembly 40 is installed on the side wall of the water shower room 50. Projected along the height direction DH, the annular track 10 is located within the enclosed area of ​​the fixed spray head 41.

[0162] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0163] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A waterproof performance testing device for testing the waterproof performance of a sealed enclosure, characterized in that, The waterproof performance testing device includes: A circular track can be installed above the sealed enclosure; At least one set of mobile spray assembly, the mobile spray assembly comprising: A movable support is movably connected to the annular track. The movable support has a vertical track extending along a first direction, which is perpendicular to or oblique to the plane of the annular track. At least a portion of the movable support can be disposed opposite to the side wall of the sealed box. The movable nozzle is movably mounted on the vertical track; A fixed spray assembly can be installed above the sealed box, and the fixed spray assembly includes a fixed nozzle; The movable nozzle and the fixed nozzle define a spraying area, and the outlets of the movable nozzle and the fixed nozzle both face the spraying area, which is used to house the sealed box.

2. The waterproof performance testing device according to claim 1, characterized in that, The annular track has an I-shaped cross-section, including a web, an upper flange connected to the upper end of the web, and a lower flange connected to the lower end of the web. In the cross-section of the annular track, the web extends along the height direction of the annular track, and the flange extends along the width direction of the annular track.

3. The waterproof performance testing device according to claim 2, characterized in that, The movable support is provided with a first set of wheels, which can slide along the upper side of the lower flange to drive the support to move along the annular track. The two sets of first wheels are located on both sides of the annular track.

4. The waterproof performance testing device according to claim 3, characterized in that, Each group of the first wheel assembly includes at least one auxiliary axle, and the auxiliary axle satisfies at least one of the following conditions: The outer peripheral surface of each of the auxiliary shafts is adapted to the shape of the upper side surface of the lower flange; The central axis of each of the auxiliary shafts is parallel to the width direction; The first wheel assembly includes two auxiliary shafts, which are spaced apart along a second direction, and the second direction, the width direction, and the height direction are perpendicular to each other.

5. The waterproof performance testing device according to claim 4, characterized in that, The movable support is provided with a drive wheel, and the drive wheel satisfies at least one of the following conditions: Along the second direction, the drive wheel is located between the two auxiliary shafts, and the drive wheel is used to drive the two auxiliary shafts to rotate synchronously; Along the height direction, the drive wheel is higher than the auxiliary shaft; The drive wheel is respectively engaged with the two auxiliary shafts; The movable support is equipped with a first motor, and the drive wheel is directly connected to or driven to the motor shaft of the first motor.

6. The waterproof performance testing device according to any one of claims 2 to 5, characterized in that, The movable support is provided with a second set of wheels, which can slide along the vertical surface of the web plate. The second set of wheels satisfies at least one of the following conditions: The two sets of the second wheel sets are respectively located on both sides of the circular track, facing each other and spaced apart along the width direction; Along the height direction, the second wheel set is higher than the first wheel set; Each second wheel group includes 1-3 rotating members, which are rotatably connected to the movable support and are capable of sliding along the vertical surface of the web.

7. The waterproof performance testing device according to any one of claims 2 to 5, characterized in that, The movable support is provided with a third set of wheels, which is capable of sliding along the outer surface of the lower flange, and the third set of wheels satisfies at least one of the following conditions: The two sets of the third wheel sets are located on opposite sides of the circular track; Each group of the third wheel group includes two rotating members spaced apart along a second direction, and along the second direction, the first wheel group is located between the two rotating members of the third wheel group; Along the height direction, the first wheel set is higher than the third wheel set.

8. The waterproof performance testing device according to claim 1, characterized in that, The mobile spraying mechanism also includes: The first gear and the second gear are spaced apart along the vertical direction on the vertical track; The second motor has its motor shaft directly connected to or driven to one of the first gear and the second gear; A chain, connected to the first gear and the second gear, and capable of moving with the rotation of either the first gear or the second gear; The mounting base is connected to the chain and is movable as the chain moves, and the movable nozzle is mounted to the mounting base.

9. The waterproof performance testing device according to claim 8, characterized in that, The mobile spraying mechanism also includes a claw connected to the mounting base, and the claw is engaged with the chain. The movable nozzle includes: The first nozzle is fixedly connected to the mounting base; The second nozzle is rotatably connected to the mounting base about a first rotating shaft, the central axis of which is perpendicular to or oblique to the height direction.

10. The waterproof performance testing device according to any one of claims 1, 8, and 9, characterized in that, The movable nozzle satisfies at least one of the following conditions: The water flow rate of the movable nozzle is 10L / min to 15L / min; The water pressure of the movable nozzle is 0.15 MPa to 0.25 MPa; The inner diameter of the outlet of the movable nozzle is 6mm to 6.5mm. The distance between the outlet end of the movable nozzle and the side wall of the sealed box is 2.5m to 3m; The mobile nozzle sprays water for 50 to 70 seconds per square meter on the sealed box. The moving nozzle moves at a speed of 90 mm / s to 110 mm / s. The number of movable nozzles is 2 to 12.

11. The waterproof performance testing device according to claim 1, characterized in that, The fixed spray assembly is configured in 4 groups; The number of fixed nozzles in each group of fixed spray assemblies is 2 to 20; and / or The four sets of fixed spray components are respectively used to correspond to the four side walls of the sealed box.

12. The waterproof performance testing device according to claim 11, characterized in that, The fixed nozzle must meet at least one of the following conditions: The water pressure at the outlet of the fixed nozzle is 0.03 MPa to 0.04 MPa; The water spraying time of the fixed nozzle is 50 min to 70 min; The spacing between the fixed spray heads in the same fixed spray assembly is 700mm to 750mm; The distance between the fixed nozzle and the top wall of the sealed box is 900mm to 1100mm.

13. The waterproof performance testing device according to any one of claims 1, 8-9, and 11-12, characterized in that, The fixed nozzle is higher than the highest position of the moving nozzle on the vertical track; and / or The waterproof performance testing device is installed inside the water spray chamber, the annular track is installed on the top of the water spray chamber, and the fixed spray assembly is installed on the top of the water spray chamber via a top bracket; and / or The waterproof performance testing device is installed inside the water spray chamber, and the fixed spray assembly is installed on the side wall of the water spray chamber.

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