Air tightness detection device for motorcycle fuel tank

Abstract

The invention relates to a motorcycle fuel tank air tightness detection device, and relates to the technical field of fuel tank detection, the motorcycle fuel tank air tightness detection device comprises a detection box, and detection liquid is arranged at the bottom in the detection box; a lifting assembly is installed on one face of the supporting frame, the output end of the lifting assembly is connected with a rotating assembly, a clamping assembly is installed on the rotating assembly, the lifting assembly drives the rotating assembly and the oil tank to descend into the detection box, the oil tank is immersed in the detection liquid, and the rotating assembly drives the oil tank to rotate in the detection box to change the motion state of the oil tank; the sealing assembly is used for sealing an opening of the oil tank. The inflation assembly is communicated with the oil tank; the pressure detection assembly communicates with the oil tank. The device has the advantages that tiny leakage points are detected by detecting the air pressure in the oil tank, the detection sensitivity and accuracy are improved, all parts of the oil tank can be comprehensively detected, different pressure conditions outside the oil tank can be simulated, and the situation that potential leakage points are missed due to fixed posture detection of the oil tank is avoided.

Description

Technical Field

[0001] This application relates to the technical field of fuel tank detection, and particularly to an airtightness detection device for a motorcycle fuel tank. Background Art

[0002] During the production and manufacturing process of motorcycles, the airtightness of the fuel tank is a crucial performance indicator. If there are airtightness problems in the motorcycle fuel tank, it will not only cause fuel leakage, resulting in environmental pollution and energy waste, but may also trigger serious safety accidents such as fires, threatening the lives and property safety of users.

[0003] Currently, the common methods for detecting the airtightness of motorcycle fuel tanks mainly include the immersion method. The immersion method is to immerse the fuel tank in water and determine whether the fuel tank leaks by observing whether there are bubbles emerging. However, for tiny leakage points, the generated bubbles may be very small and difficult to be accurately observed by the naked eye, resulting in missed detections. At the same time, during the detection process, the fuel tank can only be detected in a specific fixed posture, and the airtightness of the fuel tank in different states cannot be detected, easily missing some potential leakage positions.

[0004] Regarding the above related technologies, the inventor believes that there are defects in detecting the airtightness of the fuel tank by the immersion method, where the fuel tank is in a specific fixed posture and determines whether the fuel tank leaks by observing whether there are bubbles emerging, and it is easy to miss some potential leakage positions. Summary of the Invention

[0005] In order to improve the problem that when detecting the airtightness of the fuel tank by the immersion method, the fuel tank is in a specific fixed posture and determines whether the fuel tank leaks by observing whether there are bubbles emerging, and it is easy to miss some potential leakage positions, this application provides an airtightness detection device for a motorcycle fuel tank.

[0006] An airtightness detection device for a motorcycle fuel tank provided by this application adopts the following technical solutions: An airtightness detection device for a motorcycle fuel tank includes a detection tank, and a detection liquid for submerging the fuel tank is provided at the bottom inside the detection tank; a support frame, the support frame is straddled above the detection tank, a lifting assembly is installed on one side of the support frame close to the detection tank, the output end of the lifting assembly is connected to a rotating assembly, and a plurality of clamping assemblies for clamping the fuel tank are arranged on the rotating assembly. The lifting assembly drives the rotating assembly and the fuel tank to descend into the detection tank, so that the fuel tank is submerged in the detection liquid, and the rotating assembly drives the fuel tank to rotate in the detection tank to change the motion state of the fuel tank; a sealing assembly, the sealing assembly is used to seal the opening of the fuel tank; an inflation assembly, the inflation assembly is communicated with the fuel tank; A pressure detection component, which is communicated with the fuel tank and used for monitoring the pressure change in the fuel tank in real time; A control component, which is electrically connected to the lifting component, the rotating component, the inflating component and the pressure detection component respectively.

[0007] By adopting the above technical solutions, the detection tank provides an environment filled with detection liquid for the airtightness detection of the fuel tank. The support frame provides an installation foundation and stable support for components such as the lifting component. The lifting component can accurately lower the fuel tank into the detection liquid. The rotating component can drive the fuel tank to rotate, simulating different pressure states to make the detection more comprehensive. The sealing component ensures the airtightness of the fuel tank during the detection process, avoiding interference from external factors on the detection results. The inflating component inflates the fuel tank to form a certain pressure inside the fuel tank, creating conditions for detecting airtightness. The pressure detection component monitors the pressure change in the fuel tank in real time, providing data support for judging whether the fuel tank leaks. The control component coordinates the work of each component uniformly, realizing automatic detection, improving the detection efficiency and accuracy. Compared with the traditional detection method, it reduces the manual operation error and can more accurately detect the airtightness problem of the fuel tank.

[0008] Optionally, the lifting component includes a lifting cylinder. The fixed end of the lifting cylinder is installed on the support frame. The output end of the lifting cylinder is connected with a base plate. The other side of the base plate is connected with the rotating component. Guide units are arranged on both sides of the lifting cylinder.

[0009] By adopting the above technical solutions, the lifting cylinder serves as a power source and can stably drive the base plate to move up and down, thereby driving the rotating component and the fuel tank to perform lifting operations. The guide units play a role in guiding and stabilizing the lifting direction, ensuring that the fuel tank will not shift or shake during the lifting process, guaranteeing that the fuel tank can be accurately immersed in the detection liquid, and improving the stability and reliability of the detection.

[0010] Optionally, the guide unit includes a sleeve. One end of the sleeve is fixedly connected to the support frame. A rack is sleeved inside the sleeve. One end of the rack is movably arranged inside the sleeve, and the other end is connected with the base plate. A gear is meshed with the rack. A placement groove is opened outside the sleeve. The gear is installed in the placement groove. A rotating shaft is installed in the central axis direction of the gear.

[0011] By adopting the above technical solution, the sleeve provides a stable sliding space for the rack, ensuring that the rack can smoothly move up and down within the sleeve. The meshing structure between the rack and the gear converts the linear motion of the rack into the rotation of the gear, and at the same time plays a role in guiding and limiting, making the lifting motion of the substrate more stable and precise. The placement groove provides an installation position for the gear, and the rotating shaft ensures the stable rotation of the gear, further enhancing the stability and reliability of the guiding unit.

[0012] Optionally, the rotating assembly includes a fixed plate. One side of the substrate is connected to the lifting assembly, and the other side has the fixed plates installed at both ends. A driving source is installed inside one end of the fixed plate close to the substrate, and a rotating shaft is connected through the other end. The two fixed plates are rotatably connected to a rotating frame through the rotating shaft. The fuel tank is clamped on the rotating frame, and a plurality of clamping assemblies are arranged on the rotating frame to fix the fuel tank. The output end of the driving source passes through the fixed plate and is drivingly connected to a driving wheel. The driving wheel is drivingly connected to a driven wheel through a synchronous belt. The driven wheel is sleeved outside the rotating shaft. The driven wheel is coaxially drivingly connected to a first bevel gear through the rotating shaft. The driven wheel is installed on one side of the fixed plate, and the first bevel gear is arranged on the other side of the fixed plate. The first bevel gear is meshingly connected to a second bevel gear. An adjusting shaft is arranged in the central axis direction of the second bevel gear. The adjusting shaft abuts above the fuel tank. An adjusting groove is formed on the adjusting shaft. A convex block is arranged inside the second bevel gear. The convex block is slidably arranged in the adjusting groove to adjust the gap between the adjusting shaft and the fuel tank. A connecting rod is connected to the side of the support frame, and the other end of the connecting rod is connected to a cylinder body. A sliding block is arranged inside the cylinder body. A sliding groove is arranged on the adjusting shaft. The sliding block is slidably arranged in the sliding groove. A bearing is arranged at the connection between the cylinder body and the second bevel gear.

[0013] By adopting the above technical solution, the fixed plate provides installation support for components such as the driving source and the rotating shaft. The driving source drives the driven wheel to rotate through the driving wheel and the synchronous belt. The driven wheel then drives the rotating frame and the fuel tank to rotate through the rotating shaft, realizing the multi-angle flipping of the fuel tank in the detected liquid, making the detection more comprehensive. The cooperation between the first bevel gear and the second bevel gear transmits the rotation of the driven wheel to the adjusting shaft and changes the rotation direction. The cooperation between the adjusting groove on the adjusting shaft and the convex block inside the second bevel gear can automatically adjust the gap between the adjusting shaft and the fuel tank according to the actual size and shape of the fuel tank, ensuring that the fuel tank is stably abutted and positioned during rotation. The arrangement of the cylinder body and the sliding block provides guidance and support for the movement of the adjusting shaft, and the bearing reduces the frictional resistance during the rotation of the second bevel gear, improving the rotation efficiency and stability, ensuring that the rotating assembly can work flexibly and stably, and improving the accuracy of detection.

[0014] Optionally, the clamping assembly includes a bottom plate, a first vertical plate, a second vertical plate, a handle, a connecting rod, and a linkage rod. The bottom plate is mounted on the rotating frame. The first vertical plate and the second vertical plate are both provided on the bottom plate. One end of the connecting rod is hinged between the first vertical plate and the second vertical plate, and the other end is hinged to the handle. The bottom of the linkage rod is hinged between the first vertical plate and the second vertical plate, and the linkage rod is also hinged to the end of the handle. A positioning post is installed at the other end of the linkage rod to clamp the fuel tank.

[0015] By adopting the above technical solution, the bottom plate provides an installation basis for the entire clamping assembly, enabling it to be stably installed on the rotating frame. The first vertical plate and the second vertical plate provide hinge points for the connecting rod and the linkage rod, ensuring their movement trajectories. The operator operates the handle to drive the connecting rod, and the connecting rod then drives the linkage rod. Finally, the positioning post clamps or releases the fuel tank. The structure design is simple and the operation is convenient. It can quickly and reliably fix the fuel tank, ensuring that the fuel tank will not shake or shift during rotation and detection, improving the stability and accuracy of the detection.

[0016] Optionally, the inflation assembly includes an air compressor, a pressure regulating valve, and a connecting pipeline. One end of the connecting pipeline is connected to the air compressor, and the other end is connected to the fuel tank. The pressure regulating valve is provided on the connecting pipe to adjust the gas pressure filled into the fuel tank to form a higher air pressure environment inside the fuel tank than the outside.

[0017] By adopting the above technical solution, the air compressor serves as a gas source to provide sufficient gas for the fuel tank. The pressure regulating valve can accurately adjust the gas pressure filled into the fuel tank according to the different specifications and detection requirements of the fuel tank, forming a stable higher air pressure environment inside the fuel tank than the outside. The connecting pipeline connects the air compressor and the fuel tank to ensure that the gas can be smoothly filled into the fuel tank, making the detection result more accurate and reliable.

[0018] Optionally, the pressure detection assembly includes a pressure sensor. The pressure sensor is connected to the fuel tank to measure the pressure inside the fuel tank, and the control assembly is electrically connected to the pressure sensor.

[0019] By adopting the above technical solution, the pressure sensor can measure the pressure change inside the fuel tank in real time and accurately, and transmit the measurement data to the control assembly. The control assembly can judge whether there is a leakage in the fuel tank based on these data. If the pressure inside the fuel tank drops more than the set threshold within a period of time, it indicates that the fuel tank may have a leakage. This real-time monitoring method can timely detect the airtightness problem of the fuel tank, improving the sensitivity and accuracy of the detection.

[0020] Optionally, a plurality of image collectors are arranged in the detection box for collecting images of the fuel tank in water, and the image collectors are electrically connected to the control component.

[0021] By adopting the above technical solution, the image collectors can collect images of the fuel tank in the detection liquid omni-directionally and multi-angularly, and transmit the image data to the control component. The operator can intuitively judge whether there is a leakage point in the fuel tank by observing whether there are bubbles generated in the image and the position of the bubbles. The setting of a plurality of image collectors ensures the comprehensiveness of image collection, improves the intuitiveness and accuracy of detection, and can more accurately locate the leakage position.

[0022] Optionally, the sealing component includes a sealing cover and a sealing gasket. The sealing cover is connected to the opening in a matching manner. The sealing gasket is arranged on the opening, and the sealing gasket is located between the sealing cover and the fuel tank. A quick-connect joint is installed on the sealing cover, and the quick-connect joint is used for quickly connecting and disconnecting the pipelines between the fuel tank and the inflation device and between the fuel tank and the pressure detection device.

[0023] By adopting the above technical solution, the cooperation of the sealing cover and the sealing gasket can effectively seal the opening of the fuel tank, prevent gas leakage, and ensure the tightness of the detection environment. The quick-connect joint facilitates the connection and disconnection of the pipelines between the fuel tank and the inflation device and the pressure detection device, improves the operation efficiency, reduces the detection preparation time, and makes the detection process more convenient.

[0024] Optionally, a water storage tank is connected to the bottom of one side of the detection box, an overflow port is arranged at the upper part of the other side, the overflow port is communicated with an overflow tank, a drain port is arranged at the bottom of the detection box, a liquid level sensor is arranged in the detection box near the overflow port, the liquid level sensor is located below the overflow port, an electric control valve is arranged between the water storage tank and the detection box, the liquid level sensor is electrically connected to the control component, and the control component is electrically connected to the control valve.

[0025] By adopting the above technical solution, the water storage tank provides the supplement of the detection liquid for the detection box. The liquid level sensor monitors the liquid level height in the detection box in real time and transmits the data to the control component. When the liquid level is lower than the set value, the control component controls the electric control valve to open, and the water storage tank injects liquid into the detection box; when the liquid level reaches the set value, the electric control valve closes. The setting of the overflow port and the overflow tank prevents the liquid level in the detection box from being too high and ensures the safety of the detection process. The drain port facilitates the discharge of the detection liquid after the detection is completed.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The device simulates the pressure environment of a motorcycle fuel tank during actual use through the collaborative work of a clamping assembly that fixes the fuel tank on a rotating assembly, a sealing assembly that seals the opening of the fuel tank, an inflation assembly that inflates the interior of the fuel tank, and a lifting assembly that drives the rotating assembly and the fuel tank deep into the detection box. The air pressure inside the fuel tank is detected by a pressure detection component, and the control component determines whether there is a leak in the fuel tank based on the air pressure data, thereby comprehensively and accurately detecting the airtightness of the fuel tank. Compared with the traditional immersion detection method, this device can not only detect obvious leak points by observing bubbles but also detect tiny leak points using the pressure detection component, improving the sensitivity and accuracy of detection. At the same time, through the cooperation of the rotating assembly and the lifting assembly, comprehensive detection of all parts of the fuel tank and simulation of different external pressure conditions of the fuel tank are achieved, avoiding the problem of missing potential leak points due to the fixed attitude detection of the fuel tank, and greatly improving the comprehensiveness and reliability of detection. 2. Through the setting of the rotating assembly and the image collector, the fuel tank can be flipped at multiple angles in the detection liquid, and images can be collected omnidirectionally, enabling more intuitive and accurate positioning of the leak location and improving the comprehensiveness and intuitiveness of detection. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the motorcycle fuel tank airtightness detection device according to an embodiment of the present application; Figure 2 is a partial cross-sectional view of the motorcycle fuel tank airtightness detection device according to an embodiment of the present application; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a schematic structural diagram of the rotating assembly in the motorcycle fuel tank airtightness detection device according to an embodiment of the present application; Figure 5 is a schematic structural diagram of the clamping assembly in the motorcycle fuel tank airtightness detection device according to an embodiment of the present application.

[0028] Description of the Reference Numerals: 1. Detection box; 11, Drain outlet; 12, Liquid level sensor; 13, Image collector; 2, Support frame; 3, Lifting assembly; 31, Lifting cylinder; 32, Substrate; 33, Guide unit; 331, Sleeve; 332, Rack; 333, Gear; 334, Rotating shaft; 4, Rotating assembly; 41, Fixed plate; 411, Driving source; 412, Rotating shaft; 413, Rotating frame; 414, Driving wheel; 415, Synchronous belt; 416, Driven wheel; 42, First bevel gear; 43, Second bevel gear; 44, Adjusting shaft; 441, Adjusting slot; 442, Sliding slot; 45, Connecting rod; 46, Cylinder body; 461, Sliding block; 47, Bearing; 5, Clamping assembly; 51, Bottom plate; 52, First vertical plate; 53, Second vertical plate; 54, Handle; 55, Link rod; 56, Linking rod; 57, Positioning column; 6, Water storage tank; 7, Overflow tank. Detailed implementation mode

[0029] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0032] The following further elaborates on this application in conjunction with the attached Figures 1-5 This application is further described in detail below.

[0033] The embodiments of the present application disclose a motorcycle fuel tank airtightness detection device. Referring to Figure 1 and Figure 2 , the motorcycle fuel tank airtightness detection device includes a detection tank 1, and a detection liquid for submerging the fuel tank is provided at the bottom inside the detection tank 1; a support frame 2, the support frame 2 straddles above the detection tank 1, a lifting component 3 is installed on one side of the support frame 2 close to the detection tank 1, the output end of the lifting component 3 is connected to a rotating component 4, and a plurality of clamping components 5 for clamping the fuel tank are arranged on the rotating component 4. The lifting component 3 drives the rotating component 4 and the fuel tank to descend into the detection tank 1, so that the fuel tank is submerged in the detection liquid, and the rotating component 4 drives the fuel tank to rotate in the detection tank 1 to change the movement state of the fuel tank; a sealing component, which is used to seal the opening of the fuel tank; an inflation component, which is connected to the fuel tank; a pressure detection component, which is connected to the fuel tank and is used to monitor the pressure change in the fuel tank in real time; a control component, which is electrically connected to the lifting component 3, the rotating component 4, the inflation component, and the pressure detection component respectively.

[0034] In this motorcycle fuel tank airtightness detection device, a detection liquid is provided at the bottom inside the detection tank 1. The detection liquid is usually water. The detection tank 1 provides a specific accommodation space for the airtightness detection of the fuel tank, can completely accommodate the fuel tank, ensure that the fuel tank can be completely submerged in the detection liquid, and provides a necessary physical environment for subsequent detection operations. At the same time, the working conditions of the fuel tank under the action of water pressure can be simulated in the detection tank 1, so as to comprehensively detect the airtightness of the fuel tank and avoid missing the leakage position of the fuel tank.

[0035] The support frame 2 straddles above the detection tank 1, plays a role in supporting and fixing components such as the lifting component 3, provides a stable structural foundation for the entire detection device, ensures the stability and accuracy of components such as the lifting component 3 and the rotating component 4 during the working process, enables each component to operate normally, and thus ensures the smooth progress of the detection work.

[0036] The lifting component 3 is installed on the support frame 2, and its output end is connected to the rotating component 4. By driving the rotating component 4 and the fuel tank to rise or fall, the immersion and removal operations of the fuel tank in the detection tank 1 are realized, and the depth and position of the fuel tank immersed in the detection liquid can be accurately controlled, improving the automation degree of detection and the convenience of operation, and at the same time ensuring the accuracy of the fuel tank position during the detection process.

[0037] The rotating assembly 4 is connected to the lifting assembly 3, and a plurality of clamping assemblies 5 are installed on the rotating assembly 4. The oil tank is clamped on the rotating assembly 4 by the edge of the oil tank, and the oil tank is fixed on the rotating assembly 4 by clamping the edge of the oil tank by the plurality of clamping assemblies 5, that is, the rotating assembly 4 can drive the oil tank to rotate in the detection box 1, change the movement state and posture of the oil tank, and immerse all parts of the oil tank in the detection liquid to comprehensively detect the air tightness of different positions of the oil tank. The oil tank can also be placed in different pressure conditions to simulate the actual working state, so as to avoid missing potential leakage points due to the fixed posture detection of the oil tank, and improve the comprehensiveness and accuracy of the detection.

[0038] The clamping assembly 5 is installed on the rotating assembly 4 and is used to clamp the oil tank to ensure that the oil tank is stably fixed during the detection process, to ensure the stability of the oil tank during the lifting and rotation process, to prevent the oil tank from affecting the detection results due to position changes, and to facilitate precise operation and detection of the oil tank.

[0039] The sealing assembly is used to seal the opening of the fuel tank. Sealing assemblies are set on the two openings of the fuel tank to prevent gas leakage from the openings during the inflation test, ensure the accuracy of the test, and ensure that a relatively closed space is formed inside the fuel tank, so that the gas filled into the inflation assembly can form an air pressure environment inside the fuel tank that is higher than the external pressure, thereby accurately detecting the air tightness of the fuel tank and avoiding misjudgment due to loose sealing at the opening.

[0040] The inflation component is connected to the fuel tank. By filling the fuel tank with gas, an air pressure environment higher than the external pressure is formed inside the fuel tank, simulating the internal pressure of the fuel tank in actual use. The pressure change is used to detect whether there is a leak in the fuel tank. Tiny leaks can be found more effectively, the sensitivity and accuracy of detection can be improved, observation with the naked eye can be reduced, and work efficiency can be improved.

[0041] The pressure detection component is connected to the fuel tank to monitor the pressure changes in the fuel tank in real time, and transmit the pressure data to the control component, thereby accurately measuring the pressure in the fuel tank. By analyzing and processing the pressure data, it is possible to determine whether there is a leak in the fuel tank and the extent of the leak, providing accurate data support for the test results and improving the reliability of the test.

[0042] The control component is electrically connected to the lifting component 3, the rotating component 4, the inflation component, and the pressure detection component respectively to control the operation and working status of each component, realize automatic control of the entire detection process, coordinate the actions of each component according to the preset procedures and parameters, ensure that the detection process is carried out according to the predetermined process, improve the efficiency and accuracy of the detection, and also facilitate the operator to monitor and manage the detection process.

[0043] The device fixes the fuel tank on the rotating assembly 4 through the clamping assembly 5, seals the opening of the fuel tank with the sealing assembly, inflates the interior of the fuel tank with the inflation assembly, and drives the rotating assembly 4 and the fuel tank to penetrate into the detection tank 1 by the lifting assembly 3 to work together, simulating the pressure environment of the motorcycle fuel tank during actual use, and detecting the air pressure in the fuel tank through the pressure detection assembly. The control assembly judges whether there is a leak in the fuel tank based on the air pressure data, and conducts a comprehensive and accurate airtightness detection on the fuel tank. Compared with the traditional immersion detection method, this device can not only find obvious leakage points by observing bubbles, but also detect tiny leakage points with the pressure detection assembly, improving the sensitivity and accuracy of detection. At the same time, through the cooperation of the rotating assembly 4 and the lifting assembly 3, a comprehensive detection of all parts of the fuel tank is realized, and different pressure conditions outside the fuel tank are simulated, avoiding the problem of missing potential leakage points due to the fixed posture detection of the fuel tank, greatly improving the comprehensiveness and reliability of detection. In addition, the automated control assembly makes the detection process more efficient and convenient, reduces the errors and labor intensity of manual operation, improves the efficiency and quality of detection, helps to ensure the quality and safety of motorcycle fuel tanks, and reduces safety accidents and environmental pollution problems caused by airtightness problems of fuel tanks.

[0044] The sealing assembly includes a sealing cover and a sealing gasket. The sealing cover is connected to the opening in a mating manner. The sealing gasket is installed on the opening and is located between the sealing cover and the fuel tank. A quick-connect joint is installed on the sealing cover, and the quick-connect joint is used to quickly connect and disconnect the pipelines between the fuel tank and the inflation device and between the fuel tank and the pressure detection device. The sealing cover covers and plugs the opening of the fuel tank from the outside. It can adapt to the openings of fuel tanks with different shapes and sizes. By closely fitting with the opening, it prevents gas from leaking from the opening, providing a basic sealing barrier for the opening of the fuel tank. Its tight mating connection can effectively block the leakage of most gases, reduce detection errors, ensure that a stable high-pressure environment can be maintained inside the fuel tank during inflation detection, and guarantee the accuracy of detection results.

[0045] The sealing gasket uses its own elasticity and flexibility to fill the tiny gaps that may exist between the sealing cover and the opening of the fuel tank, further enhancing the sealing effect, making up for the looseness caused by processing accuracy or assembly errors between the sealing cover and the opening of the fuel tank, preventing tiny gas leakage, which is crucial for detecting tiny leakage points, and greatly improving the sealing performance of the entire sealing assembly.

[0046] The quick-connect connector is installed on the sealing cover and is used to quickly connect and disconnect the pipelines between the oil tank and the inflation device, and between the oil tank and the pressure detection device, which simplifies the equipment connection process and improves the efficiency of the pre-test preparation and post-test disassembly work. At the same time, the quick-connect connector can ensure the tightness of the connection, avoid gas leakage caused by loose connection, and ensure the accuracy of the detection. Through the coordinated work of the sealing cover, sealing gasket and quick-connect connector, the sealing assembly effectively improves the accuracy and efficiency of the detection. On the one hand, reliable sealing performance can prevent gas leakage, avoid misjudgment caused by loose sealing, and ensure that the test results truly reflect the airtightness of the oil tank; on the other hand, the application of quick-connect connectors reduces the time cost of the detection operation, adapts to the demand for efficient detection in modern industrial production, and helps to improve production efficiency and ensure product quality.

[0047] The inflation component includes an air compressor, a pressure regulating valve and a connecting pipe. One end of the connecting pipe is connected to the air compressor, and the other end is connected to the oil tank. The pressure regulating valve is set on the connecting pipe to adjust the pressure of the gas filled into the oil tank so that the air pressure inside the oil tank is higher than the outside air pressure. As the core air source equipment of the inflation component, the air compressor continuously and stably supplies sufficient compressed air to ensure that the inside of the oil tank can quickly reach and maintain an air pressure higher than the outside air pressure during the detection process, creating conditions for subsequent leak detection. The pressure regulating valve is used to accurately adjust the pressure of the gas filled into the oil tank. The operator can manually or automatically adjust the parameters of the pressure regulating valve according to the detection standards and requirements of different types of oil tanks so that the output gas pressure reaches an appropriate value to avoid damage to the oil tank due to excessive pressure, or failure to detect tiny leaks due to too low pressure.

[0048] The connecting pipe connects the air compressor, the pressure regulating valve and the fuel tank to form a gas transmission channel, so that the compressed air can be smoothly transported from the air compressor to the inside of the fuel tank. At the same time, the connecting pipe also plays the role of fixing and protecting the internal gas transmission to prevent gas leakage and external impurities from mixing in. The inflation component provides gas with appropriate pressure for the air tightness test of the motorcycle fuel tank, so that the internal pressure environment of the fuel tank is higher than the external pressure environment, simulating the state of the fuel tank under internal pressure in actual use, so as to judge the air tightness of the fuel tank by observing whether there is gas leakage and pressure changes in the future.

[0049] The pressure detection component includes a pressure sensor. The pressure sensor is connected to the fuel tank to measure the pressure inside the fuel tank. The control component is electrically connected to the pressure sensor. The pressure sensor can sense the pressure change inside the fuel tank in real time and convert the pressure signal inside the fuel tank into an electrical signal for subsequent processing and analysis. Even for a tiny pressure change, the pressure sensor can capture and feedback it in time, greatly improving the detection sensitivity. For example, when there is an extremely tiny leakage point in the fuel tank, it is difficult for the human eye to observe bubbles through the traditional immersion method, but the pressure sensor can detect the slight pressure fluctuation and thus discover potential leakage problems, further improving the detection accuracy.

[0050] The control component can receive the electrical signals transmitted by the pressure sensor, analyze and process these signals, compare the pressure data measured by the pressure sensor with the preset standard pressure threshold, make corresponding judgments and decisions according to the comparison results, and realize the intelligent monitoring of the detection process. When the pressure data is abnormal, that is, the pressure change exceeds the preset threshold range, the control component can quickly respond, such as triggering an alarm device to remind the operator, or controlling other relevant components to take corresponding measures, such as stopping inflation, recording abnormal data, etc., effectively avoiding the negligence and misjudgment that may occur in manual detection, and improving the detection accuracy and reliability. In large-scale production detection, it can quickly screen out fuel tanks with airtightness problems, ensure product quality, improve production efficiency, and provide a strong guarantee for the safe production of motorcycle fuel tanks.

[0051] Reference Figure 1 and Figure 2 On one side of the bottom of the detection tank 1, a water storage tank 6 is connected, and on the upper part of the other side, an overflow port is provided. The overflow port is connected to an overflow tank 7. A drain port 11 is provided at the bottom of the detection tank 1. A liquid level sensor 12 is provided near the overflow port inside the detection tank 1. The liquid level sensor 12 is located below the overflow port. An electric control valve is provided between the water storage tank 6 and the detection tank 1. The liquid level sensor 12 is electrically connected to the control component, and the control component is electrically connected to the control valve. The water storage tank 6 can store the detection liquid required by the detection tank 1 and supplement the liquid for the detection tank 1 during the detection process to ensure that there is always enough liquid in the detection tank 1 to immerse the fuel tank, guarantee the continuity of the detection, avoid interrupting the detection due to insufficient liquid in the detection tank 1, and improve the detection efficiency and reliability.

[0052] When the liquid level in the detection tank 1 is too high, the liquid flows into the overflow tank 7 through the overflow port, preventing the liquid in the detection tank 1 from overflowing, playing a role in regulating the liquid level in the detection tank 1, and avoiding damage to the equipment caused by liquid overflow or affecting the cleanliness of the working site. The drain port 11 is used to drain the liquid in the detection tank 1. After the detection work is completed or when it is necessary to replace the detection liquid, the liquid in the detection tank 1 is drained through the drain port 11.

[0053] The liquid level sensor 12 monitors the liquid level height in the detection box 1 in real time, converts the liquid level information into an electrical signal and transmits it to the control component, providing accurate liquid level data for the control component, enabling the control component to timely understand the liquid level situation in the detection box 1, providing a basis for subsequent control operations, and achieving precise monitoring of the liquid level. When the liquid level sensor 12 is lower than the set value, the detection liquid in the water storage tank 6 is input into the detection box 1 through the control component, so that the detection liquid in the detection box 1 can meet the detection requirements.

[0054] The electromagnetic control valve controls the flow of liquid between the water storage tank 6 and the detection box 1. According to the instructions of the control component, the electromagnetic control valve opens or closes to realize the replenishment of liquid from the water storage tank 6 to the detection box 1 or stop the replenishment.

[0055] The control component receives the liquid level signal transmitted by the liquid level sensor 12, analyzes and processes the signal, and controls the opening and closing of the electromagnetic control valve according to the preset liquid level threshold, realizing the automatic adjustment of the liquid level in the detection box 1, achieving the automation of liquid level control, reducing manual intervention, and reducing the possibility of manual operation errors. By precisely controlling the liquid level, the stability of the detection process and the accuracy of the detection results are improved, the intelligent level of the entire detection device is enhanced, and the normal progress of the airtightness detection work of the motorcycle fuel tank is guaranteed.

[0056] A plurality of image collectors 13 are arranged in the detection box 1 for collecting images of the fuel tank in water. The image collectors 13 are electrically connected to the control component. The plurality of image collectors 13 are installed in the detection box 1 to collect images of the fuel tank immersed in water from different angles, capable of capturing the real-time state of the fuel tank during the detection process, including details such as whether bubbles are generated, the position and size of the bubbles, and the condition of the fuel tank surface, etc., and can provide intuitive and detailed visual data. Compared with simply relying on manual visual inspection, the image collectors 13 can record the information in the detection process more comprehensively and accurately, without missing any tiny leakage signs. For example, for extremely tiny bubbles, the human eye may be difficult to detect, but the image collectors 13 can clearly capture and record them, providing original data for subsequent analysis, greatly improving the detection accuracy and reliability.

[0057] The control component can receive the image data transmitted by the image collectors 13, store, analyze and process these data, and judge whether there are leakage-related features in the image according to the preset image recognition algorithm, such as the number, size and distribution of bubbles, etc. At the same time, the control component can trigger corresponding operations according to the analysis results, such as issuing an alarm, recording the detection results, etc., thereby realizing the intelligent analysis and management of the detection process. Through automated image recognition and processing, the subjectivity and error of manual image interpretation are reduced, a large amount of image data can be processed quickly and accurately, the airtightness problems of the fuel tank can be discovered in time, the detection efficiency is improved, and the needs of large-scale production detection are met.

[0058] Through image acquisition and analysis, the leakage condition on the surface of the fuel tank can be visually observed. Combined with the pressure data provided by the pressure detection component, the airtightness of the fuel tank can be judged from multiple dimensions, avoiding missed detection or misjudgment that may occur in a single detection method. At the same time, the automated image analysis process improves the detection efficiency, reduces the labor cost, helps to improve the product quality control level, and ensures the quality and safety of the motorcycle fuel tank.

[0059] Reference Figure 1 and Figure 2 , the lifting component 3 includes a lifting cylinder 31. The fixed end of the lifting cylinder 31 is installed on the support frame 2. The output end of the lifting cylinder 31 is connected with a base plate 32. The other side of the base plate 32 is connected with a rotating component 4. Guide units 33 are arranged on both sides of the lifting cylinder 31. The lifting cylinder 31 serves as a power source. Through its telescopic movement, it drives the base plate 32 and the components such as the rotating component 4 and the fuel tank connected to the base plate 32 to move up and down, so as to adjust the position of the fuel tank in the detection tank 1, enabling it to be accurately immersed in water or taken out of the water, facilitating the loading and unloading operation, and improving the detection efficiency.

[0060] The support frame 2 provides stable support for the lifting cylinder 31, bears the gravity and other acting forces of the lifting cylinder 31 and the connected components during the movement process, ensures the stability and reliability of the entire lifting component 3, and enables the lifting cylinder 31 to work stably. In addition, universal wheels can be arranged at the bottom of the support frame 2 to facilitate the overall movement of the support frame 2 and its connected components to a suitable position.

[0061] The base plate 32 is used to connect the output end of the lifting cylinder 31 and the rotating component 4, playing a role in force transmission and support, transmitting the power of the lifting cylinder 31 to the rotating component 4 and the fuel tank, enabling them to follow the lifting cylinder 31 to move up and down, and at the same time providing an installation basis for the rotating component 4. The guide unit 33 provides a guiding role for the lifting movement of the base plate 32 and the connected components, ensuring that it moves up and down along a predetermined straight line direction, preventing the base plate 32 from deviating, shaking or rotating during the lifting process, and improving the accuracy and stability of the lifting movement.

[0062] The guide unit 33 includes a sleeve 331. One end of the sleeve 331 is fixedly connected to the support frame 2. A rack 332 is sleeved inside the sleeve 331. One end of the rack 332 is movably arranged inside the sleeve 331, and the other end is connected with the base plate 32. A gear 333 is meshed and connected to the rack 332. A placement groove is opened outside the sleeve 331. The gear 333 is installed in the placement groove, and a rotating shaft 334 is installed in the central axis direction of the gear 333. The sleeve 331 provides a sliding track for the rack 332, restricting the rack 332 to move linearly only along its axial direction inside the sleeve 331, playing a guiding and supporting role.

[0063] The rack 332 transmits the linear motion during the lifting process to the substrate 32. At the same time, the rack 332 meshes with the gear 333, and the rotation of the gear 333 is used to assist its own linear motion. During the movement, they cooperate with each other to ensure the smoothness and accuracy of the movement, realizing the effective transmission of the power of the lifting cylinder 31 to the substrate 32, enabling the substrate 32 to move up and down following the movement of the rack 332. Through meshing with the gear 333, the smoothness of the movement is increased, the impact and vibration are reduced, and the movement accuracy and reliability of the entire lifting assembly 3 are improved.

[0064] When the rack 332 moves, the gear 333 rotates accordingly. Through the rotation of the gear 333, the linear motion of the rack 332 can be converted into its own rotational motion, and the tooth profiles of the gear 333 and the rack 332 are used to cooperate with each other to make the movement smoother and more accurate. The placement groove provides an installation space for the gear 333, positioning and fixing the gear 333, ensuring that the gear 333 will not shift or shake during rotation, ensuring the stable meshing relationship between the gear 333 and the rack 332, ensuring the normal operation of the gear 333, enabling it to accurately mesh with the rack 332, and thus ensuring the movement accuracy and stability of the entire guiding unit 33.

[0065] The rotating shaft 334 serves as the support shaft for the rotation of the gear 333, enabling the gear 333 to perform rotational motion around its axis. The gears 333 of the two guiding units 33 both rotate around the rotating shaft 334. An installation frame can be installed on the rotating shaft 334, and the rotating shaft 334 can rotate on the installation frame. One end of the installation frame is fixedly installed on the support frame 2, providing a stable rotation basis for the gear 333.

[0066] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the rotating assembly 4 includes a fixing plate 41. One side of the substrate 32 is connected to the lifting assembly 3, and fixing plates 41 are installed at both ends of the other side. A driving source 411 is installed inside one end of a fixing plate 41 close to the substrate 32, and a rotating shaft 412 is connected through the other end. The two fixing plates 41 are rotatably connected with a rotating frame 413 through the rotating shaft 412. The fuel tank is clamped on the rotating frame 413, and multiple clamping assemblies 5 are arranged on the rotating frame 413 to fix the fuel tank. The output end of the driving source 411 passes through the fixing plate 41 and is drivingly connected with a driving wheel 414. The driving wheel 414 is drivingly connected with a driven wheel 416 through a synchronous belt 415. The driven wheel 416 is sleeved outside the rotating shaft 412. The driven wheel 416 is coaxially drivingly connected with a first bevel gear 42 through the rotating shaft 412. The driven wheel 416 is installed on one side of the fixing plate 41, and the first bevel gear 42 is arranged on the other side of the fixing plate 41. The first bevel gear 42 is meshed and connected with a second bevel gear 43. An adjusting shaft 44 is arranged in the central axis direction of the second bevel gear 43. The adjusting shaft 44 abuts above the fuel tank. An adjusting groove 441 is formed on the adjusting shaft 44. A convex block is installed inside the second bevel gear 43. The convex block is slidably arranged in the adjusting groove 441 to adjust the gap between the adjusting shaft 44 and the fuel tank. A connecting rod 45 is connected to the side surface of the support frame 2. The other end of the connecting rod 45 is connected with a cylinder body 46. A sliding block 461 is arranged inside the cylinder body 46. A sliding groove 442 is arranged on the adjusting shaft 44. The sliding block 461 is slidably arranged in the sliding groove 442. A bearing 47 is arranged at the connection between the cylinder body 46 and the second bevel gear 43.

[0067] The fixing plate 41 plays a role in support and fixation. The fixing plate 41 provides an installation foundation for structures such as the driving source 411, the rotating shaft 412, and the rotating frame 413, ensuring the relative position relationship between components is stable. The driving source 411, as the power source of the rotating assembly 4, provides the driving force for rotation. It drives the driving wheel 414 to rotate through its output shaft, thereby driving the movement of the entire rotating assembly 4, enabling the fuel tank to rotate in the detection box 1 at a predetermined angle and speed, meeting the requirement of comprehensively detecting the airtightness of the fuel tank and improving the detection efficiency.

[0068] The rotating shaft 412 is connected through the fixing plate 41, and is respectively connected to the fixing plate 41 and the rotating frame 413 at both ends, serving as the axis for the rotation of the rotating frame 413. At the same time, the rotating shaft 412 transmits the rotation of the driven wheel 416 to the rotating frame 413, enabling the rotating frame 413 to rotate around its axis, and the fuel tank can achieve a stable rotation action, ensuring that all parts of the fuel tank can be fully detected during the detection process.

[0069] The rotating frame 413 is rotatably connected to the fixed plate 41 via the rotating shaft 412. The rotating frame 413 can be used to clamp the oil tank. Multiple clamping components 5 fix the oil tank. The rotating frame 413 provides a stable installation platform for the oil tank. The rotating frame 413 rotates around the rotating shaft 412 under the drive of the driving source 411, thereby realizing the rotation of the oil tank, so that all surfaces of the oil tank can be exposed to the detection environment and be in different pressure states, thereby achieving the purpose of comprehensively detecting the air tightness of the oil tank.

[0070] The clamping assembly 5 is used to fix the oil tank to prevent the oil tank from shaking or shifting during rotation, ensuring that the oil tank maintains a stable position during the detection process so as to accurately detect its air tightness. It improves the stability of the oil tank during rotation, ensures the accuracy of the test results, avoids detection errors caused by changes in the position of the oil tank, and ensures the reliability of the test data.

[0071] The driving wheel 414 transmits the power of the driving source 411 to the driven wheel 416, and the driven wheel 416 then drives the rotating frame 413 to rotate through the rotating shaft 412, thereby realizing smooth transmission of power. The transmission is transmitted through the synchronous belt 415, which ensures that the transmission ratio between the driving wheel 414 and the driven wheel 416 is stable, so that the rotating frame 413 can rotate at a predetermined speed and angle, thereby improving the movement accuracy and stability of the rotating component 4.

[0072] The first bevel gear 42 is coaxially connected to the driven wheel 416, and the second bevel gear 43 is meshed with the first bevel gear 42, so as to convert the horizontal rotation of the driven wheel 416 into the vertical rotation of the adjustment shaft 44, and drive the adjustment shaft 44 to move through the cooperation of the two, thereby realizing flexible conversion of the rotation direction, so that the adjustment shaft 44 can rotate and move in the vertical direction, so as to adjust the gap between the adjustment shaft 44 and the oil tank to adapt to different sizes and shapes of the oil tank during the rotation process.

[0073] When the second bevel gear 43 rotates, the protrusion slides in the adjustment groove 441, driving the adjustment shaft 44 to rotate and move up and down. At the same time, a slide groove 442 is provided on the adjustment shaft 44, which cooperates with the sliding block 461 in the cylinder 46, so that the adjustment shaft 44 can move up and down in the cylinder 46 to adapt to the curved surface shape of the oil tank. During the rotation process, the oil tank is always abutted and positioned. The gap and position between the oil tank can be flexibly adjusted according to the actual size and curved surface shape of the oil tank, ensuring that the oil tank is provided with stable abutment and positioning during the entire flipping process, avoiding the oil tank from affecting the detection result due to unstable position, and improving the accuracy of the detection. A buffer sleeve is provided at one end of the adjustment shaft 44 close to the oil tank to avoid damaging the surface of the oil tank.

[0074] The adjustment slot 441 on the adjustment shaft 44 is in sliding fit with the bump inside the second bevel gear 43. When the second bevel gear 43 rotates, the bump slides within the adjustment slot 441, converting the rotation of the second bevel gear 43 into the rotation and vertical movement of the adjustment shaft 44, achieving the adjustment of the clearance between the adjustment shaft 44 and the fuel tank. The flexible and precise adjustment of the clearance between the adjustment shaft 44 and the fuel tank is realized. The structure is simple and easy to operate, can quickly adapt to fuel tanks of different sizes and shapes, and improves the practicability and versatility of the rotating assembly 4.

[0075] The cylinder body 46 provides a stable installation space for the sliding block 461 and, through the cooperation of the sliding block 461 with the sliding groove 442 on the adjustment shaft 44, plays a role in supporting and guiding the adjustment shaft 44, ensuring the stability of the adjustment shaft 44 during rotation and vertical movement, ensuring that the adjustment shaft 44 can rotate and move vertically along a predetermined trajectory stably, avoiding shaking or deviation of the adjustment shaft 44 during the movement process, improving the accuracy and reliability of the movement of the adjustment shaft 44, and thus ensuring the normal operation of the entire rotating assembly 4.

[0076] During the rotation and vertical movement of the adjustment shaft 44, the sliding block 461 slides within the sliding groove 442, providing support and guidance for the adjustment shaft 44, enabling the adjustment shaft 44 to perform relative movement smoothly within the cylinder body 46, ensuring the flexibility and stability of the movement of the adjustment shaft 44, enabling the adjustment shaft 44 to adapt to the curved surface shape of the fuel tank while maintaining an accurate position and movement trajectory, and improving the working performance of the rotating assembly 4.

[0077] The main function of the bearing 47 is to reduce the frictional resistance between the second bevel gear 43 and the cylinder body 46 during rotation, improving the flexibility and efficiency of rotation. At the same time, it plays a role in supporting the second bevel gear 43, ensuring its stability and coaxiality during rotation, reducing energy loss, improving transmission efficiency, extending the service life of the second bevel gear 43 and the cylinder body 46, ensuring the stable operation of the entire rotating assembly 4, and enabling the adjustment shaft 44 to accurately follow the rotation of the second bevel gear 43 for corresponding movement and adjustment.

[0078] During the airtightness detection process of the motorcycle fuel tank, the rotating assembly 4 realizes the reliable fixation and multi-angle flipping of the fuel tank, and at the same time can flexibly adjust the abutment and positioning of the fuel tank according to the actual size and curved surface shape of the fuel tank, ensuring the stable position of the fuel tank during flipping, so as to comprehensively and accurately detect the airtightness of the fuel tank, greatly improving the accuracy of the detection result.

[0079] The rotating component 4 drives the fuel tank to rotate in water, simulating the situation where the internal pressure distribution of the fuel tank changes due to vehicle jolts, tilts, etc. during motorcycle driving. Detecting in water can better observe and detect the leakage of the fuel tank in different postures, ensuring that the airtightness of the fuel tank can be effectively detected in various actual use scenarios.

[0080] The structure of the motorcycle fuel tank is complex and irregular in shape, and there may be leakage risks in different parts. The rotating component 4 drives the fuel tank to rotate, enabling various parts of the fuel tank, such as its surfaces, edges, and welded joints, to have the opportunity to be detected at different angles. During static detection, some leakage points hidden at the bottom, side, or inside the structure may not be exposed, but through rotation, these potential leakage points will be more likely to appear under dynamic pressure changes. For example, at some welded joints of the fuel tank, there may be no leakage due to uniform pressure distribution during static state, but after rotation changes the pressure distribution, tiny gaps may appear and leakage may occur, thus being detected and avoiding undetected situations.

[0081] During motorcycle driving, the fuel in the fuel tank will slosh due to vehicle jolts, tilts, accelerations, decelerations, etc., and then the pressure borne by each part of the fuel tank will be in dynamic change. The rotating component 4 simulates this actual working condition, allowing the fuel tank to experience pressure changes at different angles during detection. This simulation makes the detection result more able to reflect the airtightness condition of the fuel tank in the real use scenario, ensuring that the detected problems have practical reference value and helping to discover potential safety hazards in advance.

[0082] Combined with the inflation component to fill the fuel tank with gas at a pressure higher than the external air pressure, and the pressure detection component to monitor the pressure change in real time, the dynamic detection method of the rotating component 4 can more accurately judge the leakage point and the degree of leakage. During rotation, if there is leakage in the fuel tank, the pressure change will show different characteristics from static detection, and the detection device can more precisely locate the leakage position and evaluate the severity of the leakage according to these characteristics. For example, when there is a slight leakage at a certain part of the fuel tank, static detection may only show tiny pressure fluctuations, making it difficult to determine the specific position; while during rotation, the pressure fluctuations will show regular changes as the fuel tank rotates, and by analyzing these changes, the leakage point can be found more accurately.

[0083] Reference Figure 1 and Figure 5, the clamping assembly 5 includes a base plate 51, a first vertical plate 52, a second vertical plate 53, a handle 54, a connecting rod 55 and a linkage rod 56. The base plate 51 is installed on the rotating frame 413. The first vertical plate 52 and the second vertical plate 53 are both arranged on the base plate 51. One end of the connecting rod 55 is hinged between the first vertical plate 52 and the second vertical plate 53, and the other end is hinged to the handle 54. The bottom of the linkage rod 56 is hinged between the first vertical plate 52 and the second vertical plate 53, and the linkage rod 56 is also hinged to the end of the handle 54. A positioning column 57 is installed at the other end of the linkage rod 56 to clamp the fuel tank. A spring is installed at one end of the linkage rod 56 close to the positioning column 57, and the other end of the spring is connected to the rotating frame 413.

[0084] The base plate 51 serves as the installation foundation of the entire clamping assembly 5. The base plate 51 provides a support and fixation platform for other components, ensuring that the clamping assembly 5 can be firmly connected to the rotating frame 413 and enabling the entire structure to remain stable during the flipping process.

[0085] The first vertical plate 52 and the second vertical plate 53 provide hinge points for the connecting rod 55 and the linkage rod 56, playing a role in support and positioning, restricting the movement ranges of the connecting rod 55 and the linkage rod 56, enabling them to move along a predetermined trajectory, ensuring the movement accuracy of the connecting rod 55 and the linkage rod 56, enabling the operation of the handle 54 to be accurately transmitted to the positioning column 57, achieving reliable clamping of the fuel tank, and improving the working stability and reliability of the clamping assembly 5.

[0086] The handle 54 serves as an operating component. The operator manually operates the handle 54 to drive the connecting rod 55 and the linkage rod 56 to move, thereby controlling the position and state of the positioning column 57, achieving the clamping and releasing actions of the fuel tank, and also facilitating adjustment according to the sizes and shapes of different fuel tanks.

[0087] The connecting rod 55 plays a role in transmitting the movement of the handle 54, converting the rotation or movement of the handle 54 into the movement of the linkage rod 56, realizing the effective transmission of the operating force of the handle 54, enabling the movement of the handle 54 to accurately affect the linkage rod 56, and further controlling the movement of the positioning column 57, ensuring the operation coherence and stability of the clamping assembly 5.

[0088] The bottom of the linkage rod 56 is hinged between the first vertical plate 52 and the second vertical plate 53, the middle part is hinged to the end of the handle 54, and a positioning column 57 is installed at the other end. The linkage rod 56 moves under the drive of the connecting rod 55, converting the operation of the handle 54 into the displacement of the positioning column 57 to achieve clamping of the fuel tank. Through a reasonable hinge structure, the operation of the handle 54 is converted into the precise movement of the positioning column 57, and the contact position and force between the positioning column 57 and the fuel tank can be accurately adjusted according to the operation force and direction of the handle 54, ensuring reliable clamping of the fuel tank.

[0089] The positioning post 57 is in direct contact with the fuel tank and clamps the fuel tank by applying pressure, preventing the fuel tank from shaking or shifting during the detection process, avoiding inaccurate detection results caused by the shaking of the fuel tank, and improving the accuracy and reliability of the detection. The spring plays a role in buffering and resetting. When clamping the fuel tank, the spring can absorb part of the pressure of the positioning post 57 on the fuel tank to avoid damaging the fuel tank due to excessive pressure; when the handle 54 is released, the elastic force of the spring can help the linkage rod 56 and the positioning post 57 return to the initial position, facilitating the next clamping operation, protecting the surface of the fuel tank from being damaged by excessive extrusion, improving the operation convenience and service life of the clamping assembly 5, reducing the trouble of manual reset, and improving the detection efficiency.

[0090] The clamping assembly 5 improves the stability of the fuel tank during the detection process, ensuring that the fuel tank does not shake or shift during the flipping process at different angles, and guaranteeing the accuracy and reliability of the detection results. At the same time, the clamping assembly 5 is convenient to operate, can quickly clamp and release the fuel tank, improves the detection efficiency, and is suitable for large-scale production detection requirements. In addition, through reasonable structural design, it can adapt to fuel tanks of different sizes and shapes and has strong versatility.

[0091] The implementation principle of the motorcycle fuel tank airtightness detection device in the embodiment of the present application is as follows: The operator places the motorcycle fuel tank on the rotating frame 413 of the rotating assembly 4. By operating the handle 54 of the clamping assembly 5, the connecting rod 55 and the linkage rod 56 are driven to move, so that the positioning post 57 clamps and fixes the fuel tank to ensure the stability of the fuel tank during the detection process; the sealing assembly is used to seal the opening of the fuel tank, the sealing cover is connected with the fuel tank opening in a matching manner, and the sealing gasket is filled between the sealing cover and the fuel tank to enhance the sealing effect. At the same time, the pipelines of the fuel tank, the inflation device, and the pressure detection device are connected through the quick-connect joints on the sealing cover.

[0092] The liquid level sensor 12 continuously monitors the liquid level height in the detection tank 1 and transmits the liquid level information to the control component. If the liquid level is lower than the set value, the control component controls the electric control valve to open, and the water storage tank 6 injects the detection liquid into the detection tank 1; when the liquid level reaches the set value, the electric control valve closes to ensure that there is enough detection liquid in the detection tank 1 to immerse the fuel tank.

[0093] The control component starts the inflation component, the air compressor starts to work, and fills the fuel tank with gas through the connecting pipeline. The pressure regulating valve adjusts the gas pressure filled into the fuel tank according to the preset pressure value, so that a gas pressure environment higher than the outside is formed inside the fuel tank; the pressure sensor of the pressure detection component measures the pressure inside the fuel tank in real time and transmits the pressure data to the control component. The control component records the initial pressure value and continuously monitors the pressure change.

[0094] The control component controls the lifting cylinder 31 of the lifting component 3 to act, driving the substrate 32 and the rotating component 4 and the fuel tank connected to the substrate 32 to descend, so that the fuel tank is immersed in the detection liquid in the detection tank 1. The guiding unit 33 ensures that the substrate 32 and the fuel tank move along a predetermined straight line direction during the lifting process, improving the lifting accuracy and stability.

[0095] The driving source 411 is started, and the output end drives the driving wheel 414 to rotate. The driving wheel 414 drives the driven wheel 416 to rotate through the synchronous belt 415. The driven wheel 416 drives the rotating frame 413 and the fuel tank to rotate through the rotating shaft 412. At the same time, the first bevel gear 42 rotates coaxially with the driven wheel 416, driving the meshing second bevel gear 43 to rotate. The convex block inside the second bevel gear 43 slides in the adjustment groove 441 of the adjustment shaft 44, causing the adjustment shaft 44 to rotate and move up and down. The sliding groove 442 on the adjustment shaft 44 cooperates with the sliding block 461 in the cylinder body 46, enabling the adjustment shaft 44 to adapt to the curved surface shape of the fuel tank while always abutting against and positioning the fuel tank. During the rotation of the fuel tank, all parts can be fully exposed in the detection liquid and are in different pressure states.

[0096] The control component analyzes the pressure data transmitted by the pressure sensor in real time. If the pressure in the fuel tank drops by more than the preset threshold within the set time, it is determined that the fuel tank has a leak.

[0097] The image collector 13 collects the image of the fuel tank in the water and transmits it to the control component. The control component analyzes whether there are bubbles in the image through an image recognition algorithm. If bubbles are found, it indicates that the fuel tank has a leak, and the leak point is located according to the position of the bubbles.

[0098] After the detection is completed, the control component controls the lifting cylinder 31 to rise, taking out the rotating component 4 and the fuel tank from the detection tank 1. The operator operates the handle 54 of the clamping component 5 to release the positioning post 57 from the fuel tank, and removes the fuel tank from the rotating frame 413. If it is necessary to replace the detection liquid or end the detection work, the liquid in the detection tank 1 can be drained through the drain port 11 at the bottom of the detection tank 1.

[0099] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A motorcycle fuel tank air tightness detection device, characterized in that: include A detection box (1), wherein the bottom of the detection box (1) is provided with a detection liquid for immersing the oil tank; A support frame (2), the support frame (2) being arranged astride above the detection box (1); a lifting assembly (3) being installed on a side of the support frame (2) close to the detection box (1); an output end of the lifting assembly (3) being connected to a rotating assembly (4); a plurality of clamping assemblies (5) for clamping the oil tank being installed on the rotating assembly (4); the lifting assembly (3) driving the rotating assembly (4) and the oil tank to descend into the detection box (1) so that the oil tank is immersed in the detection liquid; and the rotating assembly (4) driving the oil tank to rotate in the detection box (1) so as to change the motion state of the oil tank; A sealing assembly, the sealing assembly being used to seal the opening of the oil tank; An inflatable component, the inflatable component is connected to the oil tank; A pressure detection component, the pressure detection component is connected to the oil tank and is used to monitor the pressure change in the oil tank in real time; A control component, wherein the control component is electrically connected to the lifting component (3), the rotating component (4), the inflation component, and the pressure detection component respectively.

2. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: The lifting assembly (3) comprises a lifting cylinder (31), the fixed end of the lifting cylinder (31) being mounted on the support frame (2), the output end of the lifting cylinder (31) being connected to a base plate (32), the other side of the base plate (32) being connected to the rotating assembly (4), and guide units (33) being mounted on both sides of the lifting cylinder (31).

3. The motorcycle fuel tank air tightness detection device according to claim 2, characterized in that: The guide unit (33) comprises a sleeve (331), one end of the sleeve (331) is fixedly connected to the support frame (2), a rack (332) is sleeved inside the sleeve (331), one end of the rack (332) is movably arranged inside the sleeve (331), and the other end is connected to the base plate (32), a gear (333) is meshedly connected to the rack (332), a storage groove is provided outside the sleeve (331), the gear (333) is installed in the storage groove, and a rotating shaft (334) is installed in the central axis direction of the gear (333).

4. The motorcycle fuel tank air tightness detection device according to claim 3, characterized in that: The rotating assembly (4) comprises a fixed plate (41), one side of the base plate (32) is connected to the lifting assembly (3), and the fixed plates (41) are installed at both ends of the other side, a driving source (411) is installed on the inner side of one end of the fixed plate (41) close to the base plate (32), and a rotating shaft (412) is penetrated and connected to the other end, and the two fixed plates (41) are rotatably connected to a rotating frame (413) via the rotating shaft (412), and the oil tank is mounted on the rotating frame (413), and a plurality of the fixed plates (41) are connected to the rotating frame (413). The clamping assembly (5) is mounted on the rotating frame (413) to fix the oil tank. The output end of the driving source (411) passes through the fixing plate (41) and is drivingly connected to a driving wheel (414). The driving wheel (414) is drivingly connected to a driven wheel (416) via a synchronous belt (415). The driven wheel (416) is sleeved outside the rotating shaft (412). The driven wheel (416) is coaxially connected to a first bevel gear (42) via the rotating shaft (412). The driven wheel (414) is connected to a driven wheel (416) via a synchronous belt (415). 6) is installed on one side of the fixing plate (41), the first bevel gear (42) is arranged on the other side of the fixing plate (41), the first bevel gear (42) is meshingly connected with the second bevel gear (43), an adjustment shaft (44) is arranged in the central axis direction of the second bevel gear (43), the adjustment shaft (44) is arranged against the top of the oil tank, an adjustment groove (441) is opened on the adjustment shaft (44), a convex block is arranged inside the second bevel gear (43), and the convex block is slidably arranged in the adjustment groove ( A connecting rod (45) is connected to the side of the support frame (2), and the other end of the connecting rod (45) is connected to a cylinder (46). A sliding block (461) is arranged in the cylinder (46). A sliding groove (442) is provided on the adjustment shaft (44), and the sliding block (461) is slidably arranged in the sliding groove (442). A bearing (47) is arranged at the connection between the cylinder (46) and the second bevel gear (43).

5. The motorcycle fuel tank air tightness detection device according to claim 4, characterized in that: The clamping assembly (5) comprises a bottom plate (51), a first vertical plate (52), a second vertical plate (53), a handle (54), a connecting rod (55) and a linkage rod (56); the bottom plate (51) is mounted on the rotating frame (413); the first vertical plate (52) and the second vertical plate (53) are both arranged on the bottom plate (51); one end of the connecting rod (55) is hinged between the first vertical plate (52) and the second vertical plate (53); the other end is hinged on the handle (54); the bottom of the linkage rod (56) is hinged between the first vertical plate (52) and the second vertical plate (53); the linkage rod (56) is also hinged on the end of the handle (54); and the other end of the linkage rod (56) is mounted with a positioning column (57) for clamping the oil tank.

6. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: The inflation component includes an air compressor, a pressure regulating valve and a connecting pipe. One end of the connecting pipe is connected to the air compressor, and the other end is connected to the oil tank. The pressure regulating valve is arranged on the connecting pipe to adjust the pressure of the gas filled into the oil tank so that the air pressure environment inside the oil tank is higher than the external air pressure environment.

7. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: The pressure detection component includes a pressure sensor, which is connected to the oil tank for measuring the pressure in the oil tank, and the control component is electrically connected to the pressure sensor.

8. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: A plurality of image collectors (13) are arranged in the detection box (1) for collecting images of the oil tank in water, and the image collectors (13) are electrically connected to the control component.

9. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: The sealing assembly includes a sealing cover and a sealing gasket, the sealing cover is cooperatively connected with the opening, the sealing gasket is installed on the opening, and the sealing gasket is located between the sealing cover and the oil tank, and a quick-connect joint is installed on the sealing cover, and the quick-connect joint is used to quickly connect and disconnect the pipelines between the oil tank and the inflation device, and between the oil tank and the pressure detection device.

10. The motorcycle fuel tank air tightness detection device according to claim 1, characterized in that: The bottom of one side of the detection box (1) is connected to a water storage tank (6), and the upper part of the other side is provided with an overflow port, the overflow port is connected to the overflow box (7), the bottom of the detection box (1) is provided with a drain port (11), a liquid level sensor (12) is provided in the detection box (1) near the overflow port, the liquid level sensor (12) is located below the overflow port, an electric control valve is provided between the water storage tank (6) and the detection box (1), the liquid level sensor (12) is electrically connected to the control component, and the control component is electrically connected to the control valve.

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