Fuel tank air tightness detection device

Abstract

The utility model provides an oil tank air tightness detection device. The oil tank air tightness detection device comprises a water tank, a rack, a vertical lifting device, an objective table and a pressing device, the water tank is arranged at the lower end of the rack, the objective table is arranged on the rack through the vertical lifting device and can be controlled to move up and down in the water tank through the vertical lifting device, and the pressing device is arranged above the objective table and can synchronously move up and down along with the objective table. The pressing device is used for pressing the oil cylinder on the objective table; according to the utility model, the oil cylinder on the objective table is pressed by the pressing device, and the oil cylinder is prevented from floating under the action of buoyancy when entering water, so that the time required for calm of the water surface is shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of large oil cylinder preparation, in particular to an oil tank air tightness detection device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. Since the sealing of the hydraulic cylinder is generally sealed with a sealing ring, the sealing performance is determined by the performance of the sealing ring and whether the installation is qualified, so the hydraulic cylinder needs to be sealed after assembly and maintenance to determine whether its sealing is qualified. Most of the existing ones detect the change of air pressure. If the pore is small, it takes a long time to detect, and the location of the leak point cannot be determined, which affects production efficiency.

[0003] The prior art CN202322032828.2 discloses an oil cylinder air tightness detection device, comprising: a detection box; a mounting frame, the mounting frame is fixedly connected to the detection box; a camera, the camera is installed at the bottom of the mounting frame; a support frame, the support frame is fixedly connected to the bottom of the detection box; a placement plate, the placement plate is arranged in the detection box; a lifting mechanism, the lifting mechanism is arranged on the detection box, and the lifting mechanism is connected to the placement plate; although the utility model drives the oil cylinder to be immersed in water for air tightness detection by moving the placement plate, the following problems still exist:

[0004] 1. When the oil cylinder enters the water, it is filled with gas, causing the upper end to float on the water surface, making it difficult to detect. In addition, due to the floating of the oil cylinder, the water surface is difficult to calm down. The detection of bubbles requires waiting for the water surface to calm down before it is conducive to observation, which affects the detection efficiency.

[0005] 2. Due to the heavy weight of large oil cylinders, it is difficult to move them manually and they often need to be moved by crane. However, it is difficult to move the oil cylinders off the storage plate after the inspection is completed, which greatly affects production efficiency. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide an oil tank air tightness detection device, which uses a clamping device to clamp the oil cylinder on the loading platform to prevent the oil cylinder from floating under the action of buoyancy when entering the water, thereby reducing the time required for the water surface to calm down and improving detection efficiency.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] Provided is a fuel tank air tightness detection device, comprising: a water tank, a frame, a vertical lifting device, a loading platform, and a pressing device;

[0009] The water tank is arranged at the lower end of the frame, the loading platform is arranged on the frame through a vertical lifting device, and the loading platform can be controlled to move up and down in the water tank through the vertical lifting device, the clamping device is arranged above the loading platform, and can move up and down synchronously with the loading platform, and the clamping device clamps the oil cylinder on the loading platform.

[0010] It should be noted that the loading platform is connected to the frame through a vertical lifting device, and is moved up and down by a vertical lifting device (such as a hydraulic system, an electric push rod or a pneumatic system, etc.). When the air tightness test of the cylinder is required, the inflated and sealed cylinder is placed on the loading platform, and the cylinder is fixed on the loading platform by controlling the clamping device. Then, the vertical lifting device is controlled to immerse the loading platform together with the cylinder in the water tank to prevent the cylinder from floating under the action of buoyancy, thereby reducing the time required for the water surface to calm down and improving the detection efficiency.

[0011] Preferably, the detection device further comprises a sliding platform, which is correspondingly arranged on both sides of the water tank, and the upper surface of the sliding platform is maintained on the same horizontal plane as the upper surface of the stage when it moves to the highest point.

[0012] It should be noted that large oil cylinders cannot be transported manually during transportation and require the assistance of a crane. The crane lifts the oil cylinder directly above the hook. Due to the obstruction of the detection device frame, the oil cylinder cannot be directly transported to the loading platform and requires manual transportation, which greatly affects the production efficiency. Therefore, sliding platforms are set on both sides of the water tank and the sliding platforms are designed to be smoothly sliding. The oil cylinder to be tested can be easily transferred from the sliding platform to the loading platform, or returned from the loading platform to the sliding platform after inspection for easy loading and unloading. This greatly simplifies the loading and unloading process of the oil cylinder, improves work efficiency, and reduces the damage that may be caused by manual handling. At the same time, it also ensures the stability and positioning accuracy of the oil cylinder during the transfer process.

[0013] Preferably, sliding balls are evenly spaced on the loading platform, and the oil cylinder can slide on the loading platform through the sliding balls.

[0014] It should be noted that the bottom of the cylinder is in contact with the sliding ball. With its low friction characteristics, the cylinder can easily slide on the loading platform or move out from the loading platform, making the loading, positioning and unloading of the cylinder more convenient and efficient, while reducing the wear on the cylinder surface caused by hard contact.

[0015] Preferably, the vertical lifting device includes a lifting frame, a connecting rod and a driving cylinder. The upper end of the lifting frame is set on the frame through the driving cylinder, and the lower end is fixedly connected to the loading platform through the connecting rod. The clamping device is set in the middle of the upper end of the lifting frame.

[0016] It should be noted that the driving cylinder is installed at the upper end of the frame, and drives the lifting frame to move up and down through telescopic action. The lower end of the lifting frame is fixed to the loading platform through a connecting rod, thereby realizing the lifting and lowering of the loading platform. The clamping device is installed in the middle of the upper end of the lifting frame so that it can move synchronously with the lifting frame; this ensures smooth and precise control of the loading platform lifting process, is conducive to improving the reliability of detection, and is convenient for maintenance and troubleshooting.

[0017] Preferably, the pressing device is a pressing cylinder, and a flexible pressure head is provided at the lower end of the pressing cylinder.

[0018] It should be noted that air pressure is used to drive the piston rod to move up and down, thereby achieving the clamping and releasing of the oil cylinder; a flexible pressure head is installed at the lower end of the clamping cylinder, which can adapt to its shape and apply pressure evenly when contacting the oil cylinder; the clamping cylinder has the advantages of fast response and adjustable torque, and can accurately control the clamping force as needed; the flexible pressure head avoids damage to the cylinder surface caused by hard contact.

[0019] Preferably, the flexible pressure head is made of silicone or rubber.

[0020] It should be noted that the flexible pressure head is made of silicone or rubber material, which has good elasticity and deformation ability, and can produce appropriate deformation when contacting the cylinder to adapt to its surface contour, while providing stable contact pressure.

[0021] Preferably, at least one pair of waterproof lighting devices is provided on the inner wall of the water tank.

[0022] It should be noted that one or more pairs of waterproof lighting devices, such as waterproof LED light strips or diving lights, are installed on the inner wall of the water tank. They provide sufficient light during the detection process to illuminate the inside of the water tank and the surface of the oil cylinder, so that the operator can clearly observe the leakage of the oil cylinder during underwater detection; even in dim light or underwater environments, tiny bubbles or leakage traces can be accurately identified, which enhances the sensitivity and reliability of detection and helps to promptly discover and judge the air tightness problems of the oil cylinder.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides an oil tank air tightness detection device, which can quickly and accurately immerse the inflated and sealed oil cylinder into the water tank through the cooperation of the loading platform and the vertical lifting device, so as to avoid the oil cylinder from floating due to buoyancy, greatly shorten the time required for the water surface to be calm, and effectively improve the air tightness detection efficiency; and by adding a sliding platform, the large oil cylinder can be smoothly transferred from both sides to the loading platform or returned to the sliding platform from the loading platform with the help of the sliding platform, without manual handling, which significantly simplifies the loading and unloading process, reduces labor intensity, reduces the risk of handling damage, and improves overall work efficiency; the sliding balls evenly spaced and arranged on the loading platform utilize their low friction characteristics to enable the oil cylinder to slide freely during loading, positioning and unloading, avoiding Avoiding surface wear caused by hard contact not only protects the quality of the cylinder, but also improves the convenience of operation; the vertical lifting device adopts a combination design of lifting frame, connecting rod and driving cylinder to ensure that the lifting process of the loading platform is smooth, precisely and controllable; the clamping device uses a clamping cylinder and is equipped with a flexible pressure head (such as silicone or rubber material), which can not only respond quickly and accurately adjust the clamping force, but also avoid damage to the cylinder surface caused by hard contact, ensuring that the cylinder is properly protected during the inspection process; a waterproof lighting device is installed on the inner wall of the water tank to provide sufficient light for the inspection process, ensuring that under various environmental conditions, the operator can clearly observe the leakage of the cylinder underwater, which is conducive to timely and accurate judgment of the air tightness of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a fuel tank air tightness detection device according to Example 1 of the utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the frame portion of Example 1 of the utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the vertical lifting device of Example 1 of the utility model.

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the loading platform of Example 1 of the utility model.

[0029] In the figure: 1. water tank; 2. rack; 3. vertical lifting device; 31. lifting frame; 32. connecting rod; 33. driving cylinder; 4. loading platform; 41. sliding ball; 5. clamping device; 51. flexible pressure head; 6. sliding platform; 7. lighting device.

[0030] It should be noted that these drawings and text descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example 1

[0033] like Figure 1-Figure 4 As shown, a fuel tank air tightness detection device comprises: a water tank 1, a frame 2, a vertical lifting device 3, a loading platform 4, and a pressing device 5;

[0034] The water tank 1 is arranged at the lower end of the frame 2, and the loading platform 4 is arranged on the frame 2 through the vertical lifting device 3, and the loading platform 4 can be controlled to move up and down in the water tank 1 through the vertical lifting device 3. The clamping device 5 is arranged above the loading platform 4 and can move up and down synchronously with the loading platform 4, and the clamping device 5 clamps the oil cylinder on the loading platform 4.

[0035] The detection device further comprises a sliding platform 6, which is correspondingly arranged on both sides of the water tank 1, and the upper surface of the sliding platform 6 is maintained at the same level as the upper surface of the stage 4 when it moves to the highest point.

[0036] Sliding balls 41 are evenly spaced and arranged on the loading platform 4 , and the oil cylinder can slide on the loading platform 4 through the sliding balls 41 .

[0037] The vertical lifting device 3 includes a lifting frame 31, a connecting rod 32 and a driving cylinder 33. The upper end of the lifting frame 31 is set on the frame 2 through the driving cylinder 33, and the lower end is fixedly connected to the loading platform 4 through the connecting rod 32. The clamping device 5 is set in the middle of the upper end of the lifting frame 31.

[0038] The pressing device 5 is a pressing cylinder, and a flexible pressing head 51 is provided at the lower end of the pressing cylinder.

[0039] The flexible pressure head 51 is made of silicone or rubber.

[0040] The inner wall of the water tank 1 is provided with a waterproof lighting device 7 .

[0041] The working principle and use method of a fuel tank air tightness detection device of this embodiment:

[0042] The present embodiment provides an oil tank air tightness detection device, which installs a driving cylinder 33 on the upper end of the frame 2, uses air pressure to drive the piston rod to extend and retract up and down, and then drives the lifting frame 31 to move vertically. The lower end of the lifting frame 31 is fixedly connected to the loading platform 4 through the connecting rod 32 to ensure that the loading platform 4 is synchronously lifted and lowered with the lifting frame 31, and then the flexible pressure head 51 at the lower end of the clamping cylinder is used to clamp the oil cylinder placed on the loading platform 4 to prevent the oil cylinder from floating due to buoyancy when entering the water, greatly shortening the time required for the water surface to calm down, and effectively improving the air tightness detection efficiency. The sliding platforms 6 arranged on both sides of the water tank 1 are used to enable the large oil cylinder to be smoothly transferred from both sides to the loading platform 4 or return from the loading platform 4 to the sliding platform 6 with the help of the sliding platforms 6, without manual handling, which significantly simplifies the loading and unloading process, reduces labor intensity, reduces the risk of handling damage, and improves overall work efficiency.

[0043] When in use, the airtight oil cylinder is hoisted onto the sliding platform 6 on one side of the water tank 1 by a crane, and then the oil cylinder to be tested is smoothly slid from the sliding platform 6 to the loading platform 4. The characteristics of the sliding ball 41 are used to gently push the oil cylinder to a suitable position, and then the pressing cylinder is started. The flexible pressure head 51 at the lower end presses the oil cylinder to ensure that the oil cylinder is stable and immovable during the detection process. The vertical lifting device 3 is adjusted, and the loading platform 4 together with the oil cylinder is slowly immersed in the water tank 1 until the preset detection depth is reached, and the water surface is level. Keep quiet, use the light provided by the waterproof lighting device 7 to carefully observe the surface of the oil cylinder and the surrounding waters. If bubbles continue to appear, it indicates that there is a leak in the oil cylinder, and mark the leak location; if there are no bubbles or only a small amount of bubbles (which may come from the air escape during the initial immersion), it is preliminarily judged that the air tightness of the oil cylinder is good; raise the loading platform 4 to move the oil cylinder out of the water; and close the clamping cylinder to release the clamping on the oil cylinder, and then use the low friction characteristics of the sliding ball 41 to slide the oil cylinder along the loading platform 4 to the sliding platform 6.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the utility model, which is only used to illustrate the technical solution of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

[0045] In the description of the present invention, it needs to be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "upper end", "lower end", "upper surface", "lower surface", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connection" and "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A fuel tank air tightness detection device, comprising: A water tank (1), a frame (2), a vertical lifting device (3), a loading platform (4), and a pressing device (5); characterized in that: The water tank (1) is arranged at the lower end of the frame (2); the loading platform (4) is arranged on the frame (2) via a vertical lifting device (3), and the loading platform (4) can be controlled to move up and down in the water tank (1) via the vertical lifting device (3); the pressing device (5) is arranged above the loading platform (4), and can move up and down synchronously with the loading platform (4), and the pressing device (5) presses the oil cylinder on the loading platform (4).

2. The fuel tank air tightness detection device according to claim 1, characterized in that: The detection device also includes a sliding platform (6), which is correspondingly arranged on both sides of the water tank (1), and the upper surface of the sliding platform (6) is maintained on the same horizontal plane as the upper surface of the loading platform (4) when it moves to the highest point.

3. The oil tank air tightness detection device according to claim 1, characterized in that: Sliding balls (41) are evenly spaced and arranged on the loading platform (4), and the oil cylinder can slide on the loading platform (4) via the sliding balls (41).

4. The oil tank air tightness detection device according to claim 1, characterized in that: The vertical lifting device (3) comprises a lifting frame (31), a connecting rod (32) and a driving cylinder (33); the upper end of the lifting frame (31) is arranged on the frame (2) through the driving cylinder (33); the lower end is fixedly connected to the loading platform (4) through the connecting rod (32); and the pressing device (5) is arranged in the middle of the upper end of the lifting frame (31).

5. The oil tank air tightness detection device according to claim 1, characterized in that: The pressing device (5) is a pressing cylinder, and a flexible pressing head (51) is provided at the lower end of the pressing cylinder.

6. The oil tank air tightness detection device according to claim 5, characterized in that: The flexible pressure head (51) is made of silicone or rubber material.

7. The oil tank air tightness detection device according to claim 1, characterized in that: At least one pair of waterproof lighting devices (7) is provided on the inner wall of the water tank (1).

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