A bus fuel tank sealing turn-over test device

Abstract

The utility model relates to passenger car parts detection equipment technical field especially relates to a kind of passenger car fuel tank sealingness turnover test device, it include: base, frame, pivot, bearing with seat, connecting plate, carousel mechanism, angle indicating mechanism, locking mechanism, base is provided with two and is located frame both sides, two bases are all installed with bearing with seat, pivot is passed and is equipped on bearing with seat, frame both sides are all provided with connecting plate, two connecting plates are respectively connected with the pivot of both sides perpendicularly, the pivot of one side is connected with carousel mechanism, angle indicating mechanism is installed on this side pivot.The utility model whole set of device structure is simple and compact, and each component cooperates, can realize fuel tank arbitrary angle turnover, accurate angle control, reliable locking and multiple functions, operability is strong, manufacturing cost is low, can satisfy the comparative test demand of different design scheme in research and development process, can also be used for production line fuel tank sampling inspection, and the scope of application is wide.

Description

Technical Field

[0001] This utility model relates to the technical field of bus component testing equipment, and in particular to a bus fuel tank sealing flip test device. Background Technology

[0002] As a core component for fuel storage in buses, the fuel tank's sealing performance directly impacts vehicle operational safety. In the event of a rollover or tilting incident during operation, a fuel leak can easily be ignited by high-temperature engine components or electrical sparks, potentially leading to a fire or explosion. This poses a serious threat to the lives and property of passengers and those nearby. Furthermore, leaked fuel can pollute soil and groundwater, damaging the ecosystem. Fuel spilled on the road surface significantly reduces the coefficient of friction, increasing the risk of skidding for other vehicles and potentially triggering a chain reaction of traffic accidents.

[0003] In the research and development and production of passenger vehicles, there is an urgent need for a specialized testing device to accurately, conveniently, and efficiently verify the sealing performance of fuel tanks under tilted conditions. Existing fuel tank sealing testing devices generally suffer from problems such as complex structure, cumbersome operation, low angle control precision, unreliable locking, and inaccurate leakage measurement. Furthermore, most cannot achieve stable static placement of the fuel tank at any angle, making it difficult to meet the efficient requirements of comparative testing and production line sampling during the research and development process. Therefore, designing a passenger vehicle fuel tank sealing tilting testing device that is simple in structure, practical in function, low in cost, and stable in performance is of significant practical importance. Utility Model Content

[0004] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a test device for the sealing performance of a bus fuel tank.

[0006] To achieve the above objectives, the technical solution of this utility model is: a passenger vehicle fuel tank sealing rollover test device, comprising: a base, a frame, a rotating shaft, a seated bearing, a connecting plate, a turntable mechanism, an angle indicating mechanism, and a locking mechanism. Two bases are provided and located on both sides of the frame. Each base is equipped with a seated bearing, and a rotating shaft passes through the seated bearing. Connecting plates are provided on both sides of the frame. The two connecting plates are perpendicularly connected to the rotating shafts on both sides. The rotating shaft on one side is connected to the turntable mechanism, and the angle indicating mechanism is installed on the rotating shaft on that side. A locking mechanism is provided on the rotating shaft on the other side. A panel with an array of mounting holes is provided at the bottom of the frame.

[0007] In some embodiments, the turntable mechanism includes ribs, rib rings, and short rods. The ribs and rib rings are fixedly connected, and the short rods are distributed in a circumferential array on the rib rings, with the axis of the short rods parallel to the axis of the rotating shaft.

[0008] In some embodiments, the short rod is fitted with a detachable extension tube.

[0009] In some embodiments, the angle indicating mechanism includes a pointer and an angle scale, with the upper end of the pointer sleeved on a rotating shaft, and the angle scale fixed on the rotating shaft and rotating synchronously with the rotating shaft.

[0010] In some embodiments, the locking mechanism includes a brake disc, brake shoes, pins, a cam mechanism, a return spring, and a mounting bracket. The brake disc is fixedly connected to the rotating shaft, the mounting bracket is mounted on the base, and the two brake shoes are rotatably connected to the mounting bracket via pins. The cam mechanism is rotatably mounted on the mounting bracket and located between the two brake shoes. The return spring is connected to the end of the two brake shoes away from the brake disc, and the two brake shoes are located on the underside of the brake disc.

[0011] In some embodiments, the cam mechanism includes a cam and an operating handle, wherein the cam is rotatably connected to the mounting bracket and the operating handle is fixedly connected to the cam.

[0012] In some embodiments, a measuring mechanism is also included, which is connected to the base and located on the underside of the frame.

[0013] In some embodiments, the measuring mechanism includes a gooseneck tube and a measuring cup, with one end of the gooseneck tube connected to a base and the other end connected to the measuring cup.

[0014] In some embodiments, a clamp assembly is also included, which is detachably connected to the bottom panel of the frame.

[0015] In some embodiments, the clamp assembly includes a clamp and bolts, with bolts connected to both ends of the clamp, and the bolts can be connected to mounting holes in the bottom panel of the frame.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are: 1. The base, combined with the stable connection structure of the bearing and the rotating shaft, provides solid and reliable support for the entire test device, ensuring that the device does not shake or shift during the flipping of the fuel tank, thus guaranteeing the stability of the test; 2. The turntable mechanism strengthens the structure with ribs and rib rings, while the short rods distributed in a circular array make it easy for the operator to rotate. The extension tubes can be added to the short rods to achieve labor-saving rotation, avoiding the problem of interference with the ground due to the excessive length of the tubes. The structure is simple and reduces the difficulty of operation and manufacturing cost. 3. The angle indicator mechanism adopts a gravity pointer combined with a dial that rotates synchronously with the shaft. The pointer always hangs naturally, which can accurately indicate the angle rotated by the shaft in real time. The dial can be set at the end of the shaft closest to the operator. Compared with the traditional solution where the dial is fixed to the base, the angle is more convenient to view and the indication accuracy is higher. 4. The locking mechanism, through the coordinated operation of the brake disc, brake shoes, cam mechanism and return spring, can achieve reliable bidirectional locking at any time and can continuously maintain the locked state. This allows the operator to observe the status at any time during the fuel tank flipping process and to stabilize it at the target angle to complete the leakage test. The mechanism has a simple structure, convenient locking and unlocking operations, and reduces manufacturing costs. 5. The entire device has a simple and compact structure, with each component working together to achieve multiple functions such as arbitrary angle flipping of the fuel tank, precise angle control, and reliable locking. It is highly operable, has low manufacturing cost, and can meet the comparative testing needs of different design schemes during the research and development process. It can also be used for random inspection of fuel tanks on the production line, making it widely applicable.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0018] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and illustrations.

[0019] To make the above-mentioned beneficial effects and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0023] Explanation of key figure labels: Figure 1This is a first-view structural schematic diagram of a passenger vehicle fuel tank sealing performance flipping test device according to the present invention; Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure of A in the diagram; Figure 3 This is a second-view structural schematic diagram of a passenger vehicle fuel tank sealing performance flipping test device according to the present invention; Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure of B in the diagram.

[0024] Explanation of main reference numerals: Base-1, Frame-2, Rotating shaft-3, Bearing with seat-4, Connecting plate-5, Turntable mechanism-6, Angle indicating mechanism-7, Locking mechanism-8, Measuring mechanism-9, Hoop assembly-10, Rib-61, Rib ring-62, Short rod-63, Pointer-71, Angle scale-72, Brake disc-81, Brake shoe-82, Pin-83, Cam mechanism-84, Return spring-85, Mounting bracket-86, Gooseneck tube-91, Measuring cup-92. Detailed Implementation

[0025] The following detailed description of the embodiments of this utility model, in conjunction with the accompanying drawings, will provide a thorough understanding of how this utility model uses technical means to solve technical problems and achieve technical effects, enabling its implementation. It should be noted that, provided there is no conflict, the various embodiments and features within them can be combined with each other, and all resulting technical solutions are within the protection scope of this utility model.

[0026] Furthermore, numerous specific details are set forth in the following description for illustrative purposes to provide a thorough understanding of the embodiments of this invention. However, it will be apparent to those skilled in the art that this invention may be practiced without the specific details or particular methods described herein.

[0027] Please see Figure 1-4 This utility model provides a test device for the sealing performance of a bus fuel tank, comprising: a base 1, a frame 2, a rotating shaft 3, a bearing with a seat 4, a connecting plate 5, a turntable mechanism 6, an angle indicating mechanism 7, and a locking mechanism 8. Two bases 1 are provided and located on both sides of the frame 2. Bearings with seats 4 are installed on both bases 1, and the rotating shaft 3 passes through the bearings with seats 4. Connecting plates 5 are provided on both sides of the frame 2. The two connecting plates 5 are perpendicularly connected to the rotating shaft 3 on both sides. The rotating shaft 3 on one side is connected to the turntable mechanism 6, and the angle indicating mechanism 7 is installed on the rotating shaft 3 on that side. The locking mechanism 8 is provided on the rotating shaft 3 on the other side. The bottom of the frame 2 is provided with a panel with an array of mounting holes.

[0028] During the test, the fuel tank of the bus to be tested is first placed on the panel of frame 2, the position of the fuel tank is adjusted, and it is secured to frame 2. Then, the angle indicator mechanism 7 is checked to ensure that the tip of the pointer hangs freely and is adjusted to zero degrees. The operator then holds the turntable mechanism 6 with both hands and rotates it. Under the action of the bearing 4, the shaft 3, frame 2, and fuel tank rotate synchronously. At the same time, the angle indicator mechanism 7 is observed, and the flipping angle is controlled. If it is necessary to observe whether there is any leakage on the surface of the fuel tank during the flipping process, the turntable mechanism 6 can be stopped, and the locking mechanism 8 can be rotated to make it fit tightly against the shaft 3 and lock it. The fuel tank will then remain in the flipped position, and the condition of the fuel tank can be observed at close range. This completes the flipping test process for the fuel tank sealing performance.

[0029] According to some embodiments of this application, optionally, the turntable mechanism 6 includes ribs 61, rib rings 62, and short rods 63. The ribs 61 and rib rings 62 are fixedly connected, and the short rods 63 are distributed in a circumferential array on the rib rings 62, with the axis of the short rods 63 parallel to the axis of the rotating shaft 3. When the operator rotates the turntable mechanism 6, by holding the short rods 63 and slowly pushing them, the rotating shaft 3, frame 2, and fuel tank can be driven to rotate synchronously under the action of the bearing 4. This process, through the combination of ribs 61 and rib rings 62, effectively enhances the structural strength of the turntable mechanism 6, avoids deformation due to force during rotation, and extends the service life of the device. The circumferentially distributed short rods 63 provide the operator with a uniform force application point, making it convenient and effortless to drive the rotating shaft 3 to rotate. Furthermore, the design of the short rods 63 being parallel to the rotating shaft 3 ensures that the direction of force application is consistent with the direction of rotation, improving operating efficiency.

[0030] According to some embodiments of this application, optionally, the short rod 63 is fitted with a detachable extension tube. The extension tube extends the rod, making it easier to operate, and since the detachable extension tube is parallel to the pivot, it will not interfere with the ground due to excessive length, further expanding the applicability of the device and meeting the needs of tipping over large fuel tanks.

[0031] According to some embodiments of this application, optionally, the angle indicating mechanism 7 includes a pointer 71 and an angle scale 72. The upper end of the pointer 71 is sleeved on the rotating shaft 3, and the angle scale 72 is fixed on the rotating shaft 3 and rotates synchronously with the rotating shaft 3. The pointer 71 is installed by a sleeve, which is a gravity suspension. It does not require additional power to drive it and can always maintain a natural downward state, ensuring the stability of the angle indication reference. The angle scale 72 is fixedly connected to the rotating shaft 3 and rotates synchronously with the rotating shaft 3, so that the pointer 71 can accurately indicate the flip angle of the fuel tank in real time. Compared with the traditional scale design fixed to the base, this structure can place the scale in a position that is easy for the operator to observe, reduce the angle reading error, and provide a guarantee for the accuracy of the test.

[0032] According to some embodiments of this application, optionally, the locking mechanism 8 includes a brake disc 81, brake shoes 82, pins 83, a cam mechanism 84, a return spring 85, and a mounting bracket 86. The brake disc 81 is fixedly connected to the rotating shaft 3, the mounting bracket 86 is mounted on the base 1, the two brake shoes 82 are rotatably connected to the mounting bracket 86 through the pins 83, the cam mechanism 84 is rotatably mounted on the mounting bracket 86 and located between the two brake shoes 82, and the return spring 85 is connected to the end of the two brake shoes 82 away from the brake disc 81. The two brake shoes 82 are located on the lower side of the brake disc 81. When the rotating locking mechanism 8 locks the rotating shaft 3, the process is achieved by rotating the cam mechanism 84. The cam mechanism 84 pushes the two brake shoes 82 to rotate around the pin 83, so that the brake shoes 82 are tightly engaged with the brake disc 81, thereby locking the rotating shaft 3. The two brake shoes 82 are symmetrically designed to achieve reliable bidirectional locking. The pin 83 provides a pivot point for the rotation of the brake shoes 82. The cam mechanism 84 drives the brake shoes 82 to move through mechanical transmission, which is convenient to operate and provides stable locking force. The return spring 85 realizes the automatic reset of the brake shoes 82, which simplifies the unlocking operation. This structure solves the problems of unreliable locking and cumbersome operation of existing devices, and can meet the needs of locking and observing at any time during the test.

[0033] According to some embodiments of this application, optionally, the cam mechanism 84 includes a cam and an operating handle. The cam is rotatably connected to the mounting bracket 86, which ensures smooth cam rotation. The operating handle is fixedly connected to the cam. The extended lever arm of the operating handle allows the operator to drive the cam to rotate with less force, reducing the difficulty of operation. The profile curve design of the cam ensures that the clamping force of the brake shoe 82 changes with the rotation angle of the operating handle, ultimately ensuring a stable locking state and eliminating the risk of self-unlocking.

[0034] According to some embodiments of this application, optionally, a measuring mechanism 9 is also included. The measuring mechanism 9 is connected to the base 1 and located on the lower side of the frame 2. The measuring mechanism 9 includes a gooseneck tube 91 and a measuring cup 92. One end of the gooseneck tube 91 is connected to the base 1, and the other end is connected to the measuring cup 92. The gooseneck tube 91 has the characteristic of being able to be bent and shaped arbitrarily, allowing the measuring cup 92 to reach any position in the test space. It is suitable for leak testing of different parts of the fuel tank and can be moved to below the possible leak point at the bottom of the fuel tank, maintaining a sufficiently close distance to the leak point to effectively prevent liquid splashing. During the static observation process, if a leak is found in the fuel tank, the measuring cup 92 will collect the leaked liquid. After the test, the value corresponding to the scale line on the measuring cup 92 is directly read to record the leakage amount, realizing accurate measurement of the leakage amount. The operation is convenient and efficient.

[0035] According to some embodiments of this application, optionally, the device further includes a clamp assembly 10, which is detachably connected to the bottom panel of the frame 2. The clamp assembly 10 includes a clamp and bolts, with bolts connected to both ends of the clamp. The bolts can be connected to mounting holes on the bottom panel of the frame 2. The clamp assembly 10 is used to fix the fuel tank to the frame 2. Specifically, the clamp with bolts is wrapped around the outside of the fuel tank, and then the bolts are screwed into the mounting holes until the clamp securely fixes the fuel tank.

[0036] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0037] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0038] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A test device for the sealing performance of a passenger vehicle fuel tank by flipping, characterized in that, include: The frame consists of a base (1), a frame (2), a rotating shaft (3), a bearing with a seat (4), a connecting plate (5), a turntable mechanism (6), an angle indicating mechanism (7), and a locking mechanism (8). There are two bases (1) located on both sides of the frame (2). Each base (1) is equipped with a bearing with a seat (4), and a rotating shaft (3) is mounted on the bearing with a seat (4). Each side of the frame (2) is equipped with a connecting plate (5), and the two connecting plates (5) are perpendicularly connected to the rotating shafts (3) on both sides. One side of the rotating shaft (3) is connected to the turntable mechanism (6), and the angle indicating mechanism (7) is mounted on the rotating shaft (3) on that side. The other side of the rotating shaft (3) is equipped with a locking mechanism (8). The bottom of the frame (2) is equipped with a panel with array mounting holes.

2. The bus fuel tank sealing test device according to claim 1, characterized in that, The turntable mechanism (6) includes ribs (61), rib rings (62), and short rods (63). The ribs (61) and rib rings (62) are fixedly connected. The short rods (63) are arranged in a circumferential array on the rib rings (62), and the axis of the short rods (63) is parallel to the axis of the rotating shaft (3).

3. The bus fuel tank sealing flipping test device according to claim 2, characterized in that, The short rod (63) is fitted with a detachable extension tube.

4. The bus fuel tank sealing flipping test device according to claim 1, characterized in that, The angle indicating mechanism (7) includes a pointer (71) and an angle scale (72). The upper end of the pointer (71) is sleeved on the rotating shaft (3), and the angle scale (72) is fixed on the rotating shaft (3) and rotates synchronously with the rotating shaft (3).

5. The bus fuel tank sealing test device according to claim 1, characterized in that, The locking mechanism (8) includes a brake disc (81), brake shoes (82), pin (83), cam mechanism (84), return spring (85), and mounting bracket (86). The brake disc (81) is fixedly connected to the rotating shaft (3). The mounting bracket (86) is mounted on the base (1). The two brake shoes (82) are rotatably connected to the mounting bracket (86) through the pin (83). The cam mechanism (84) is rotatably mounted on the mounting bracket (86) and located between the two brake shoes (82). The return spring (85) is connected to the end of the two brake shoes (82) away from the brake disc (81). The two brake shoes (82) are located on the lower side of the brake disc (81).

6. The bus fuel tank sealing flipping test device according to claim 5, characterized in that, The cam mechanism (84) includes a cam and an operating handle. The cam is rotatably connected to the mounting bracket (86), and the operating handle is fixedly connected to the cam.

7. The bus fuel tank sealing flipping test device according to claim 1, characterized in that, It also includes a measuring mechanism (9), which is connected to the base (1) and located on the underside of the frame (2).

8. The bus fuel tank sealing test device according to claim 7, characterized in that, The measuring mechanism (9) includes a gooseneck tube (91) and a measuring cup (92). One end of the gooseneck tube (91) is connected to the base (1), and the other end is connected to the measuring cup (92).

9. The bus fuel tank sealing flipping test device according to claim 1, characterized in that, It also includes a hoop assembly (10), which is detachably connected to the bottom panel of the frame (2).

10. The bus fuel tank sealing flipping test device according to claim 9, characterized in that, The hoop assembly (10) includes a hoop and bolts. Bolts are connected to both ends of the hoop, and the bolts can be connected to the mounting holes of the bottom panel of the frame (2).

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