A vehicle fuel tank oil sloshing characteristics testing device

Abstract

The present invention relates to the technical field of fuel tank testing, and proposes a device for testing the sloshing characteristics of fuel in a vehicle fuel tank, comprising a base, a simulated track fixedly mounted on the upper end of the base, the simulated track comprising undulating support columns, the upper end faces of the support columns being provided with a ring track, the outer circumference of the ring track being provided with convex teeth, a control device movably mounted in the middle of the base, a moving device mounted on the simulated track, a driving device being mounted in the middle of the moving device, the driving device comprising a driving motor. By providing a simulated track similar to a real road, simulating the undulations and turns of the track, the driving device driving the moving device, and the acceleration, deceleration, rotation, and braking processes of the fuel tank on the simulated track, the sloshing and turbulence phenomena of the fuel inside the tank caused by inertia can be tested by the testing mechanism, so as to study the structure and product performance of the fuel tank.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel tank testing, and in particular to a device for testing the sloshing characteristics of oil in a vehicle fuel tank. Background Art

[0002] When a vehicle is driving, it is inevitable that it will change speed and brake. When this happens, the oil in the fuel tank will shake violently. When driving on some poor roads, the vibration of various parts of the car will be more severe, and the oil in the fuel tank will become turbulent, which can easily cause damage to the fuel tank structure and pose a safety hazard to vehicle driving. It will also transmit a certain amount of shaking noise into the car through the structure or air medium, causing certain inconvenience to the driver and passengers in the car.

[0003] A search of existing Chinese patents reveals an automotive fuel tank impact test bench (CN200720027784.2). A cylinder and one or more guide rails are fixed to a base, with a workbench for securing the fuel tank seated on the guide rails. One end of the workbench is connected to the front end of the cylinder's piston rod. Buffers are fixed to the base, located on the outside of each end of the workbench, with the bearing end of each buffer facing the workbench. A travel switch and a counter are fixed to one side of the base, and a block is provided on one side of the workbench to cooperate with the travel switch and counter. By combining a conventional operating control device with the cylinder and travel switch, the reciprocating motion of the cylinder's piston rod can be achieved, and the number of reciprocating motions of the cylinder's piston rod is recorded by a counter. This patent can only simulate the fuel tank's impact resistance, but it is difficult to truly simulate the movement of a vehicle's fuel tank, and is not ideal for structural improvement or research and development of actual fuel tanks.

[0004] Therefore, we made improvements to this problem and proposed a vehicle fuel tank oil sloshing characteristics testing device. Summary of the Invention

[0005] The object of the present invention is to provide a vehicle fuel tank oil sloshing characteristics testing device to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a vehicle fuel tank oil sloshing characteristics testing device, comprising a base, a simulation track is fixedly installed on the upper end of the base, the simulation track includes an undulating support column, the upper end face of the support column is provided with a ring rail, the outer circumference of the ring rail is provided with convex teeth, a control device is movably installed in the middle of the base, a moving device is mounted on the simulation track, a driving device is installed in the middle of the moving device, the driving device includes a driving motor, a gear is fixedly installed on the upper end of the driving motor, the gear is meshed with the convex teeth on the outer circumference of the ring rail, a fixing fixture is movably installed on the upper end of the moving device, a fuel tank is fixed in the middle of the fixing fixture, a testing mechanism is installed inside the fuel tank, and the outer end of the testing mechanism is fixedly connected to the control device.

[0007] As a further solution of the present invention, the control device includes a turntable, which is sleeved and installed on the upper end of the base, and a bearing is sleeved between the turntable and the base. A liquid storage tank and a control box are fixedly installed on the upper end of the turntable, and a data cable is connected to the upper end of the control box. An oil pipe is fixedly connected to the upper end of the liquid storage tank, and the data cable and the oil pipe are both connected to the oil tank.

[0008] As a further solution of the present invention, the moving device includes a tray, the upper end surface of the tray is provided with a slide groove, the interior of the slide groove is sleeved with a first electric push rod, the circumference of the first electric push rod is sleeved with a spring, the middle of the tray is provided with a clamping groove, the clamping groove is clamped on the outer side of the ring rail, the bottom of the tray is fixedly connected to the first support plate and the second support plate, and the driving device is fixedly mounted on the second support plate.

[0009] As a further solution of the present invention, the fixing fixture includes two clamps, the bottom surface of the clamp is fixedly installed with a slider, the slider is slidably installed inside the slide groove, and the upper end of the tray is fixedly installed with a lock bolt.

[0010] As a further solution of the present invention, the testing mechanism includes a fuel tank cover and three test probes, and the three test probes are folded and connected with a connecting rod. The upper end of the central test probe is fixedly connected to a connecting head, and the lower end of the connecting head is hinged to a fixing rod, and the fixing rod is fixedly installed on the fuel tank cover. The fuel tank cover is also hinged with a telescopic second electric push rod, and the bottom end of the second electric push rod is hinged to the higher end of the connecting head.

[0011] As a further solution of the present invention, a hose is fixedly installed in the middle of the fuel tank cover, one end of the hose is fixedly connected to the control device, an electric oil pump is fixedly connected to the control device and the hose connecting end, and the other end of the hose is a long duckbill-shaped tube that extends straight into the bottom of the fuel tank.

[0012] As a further solution of the present invention, the simulation track is two parallel tracks, one low and one high, and inclined C-shaped curved tracks are set at both ends of the two parallel tracks for transition connection.

[0013] As a further solution of the present invention, the test probe is close to the side wall of the oil tank, and multiple vibration sensors are arranged at equal distances on the test probe. A test window is provided on the upper section of the test probe, and the test window is a high-strength quartz glass observation window. A high-speed camera is fixedly installed inside the test window.

[0014] As a further solution of the present invention, both sides of the tray are provided with protruding edges.

[0015] The present invention provides a vehicle fuel tank oil sloshing characteristics testing device, which has the following beneficial effects:

[0016] 1. By setting up a simulated track similar to a real road, simulating the ups and downs and turns of the track, and driving the moving device and the acceleration, deceleration, rotation and braking of the fuel tank on the simulated track, the vehicle's motion state is simulated. Therefore, the sloshing and turbulence of the fuel inside the tank caused by inertia can be tested by the test organization, so as to study the structure and product performance of the fuel tank.

[0017] 2. A test mechanism is installed at the upper opening of the fuel tank. A hose is provided at one end of the test mechanism, which is connected to the oil pipe. This facilitates the addition of test liquid into the fuel tank through the oil pipe according to different experimental volumes. The device can perform multiple cycle tests at 25%, 50%, and 75% of the rated volume, respectively, to simulate the driving shaking conditions within the life of the car, making the device test data more realistic and effective.

[0018] 3. By movably installing the control device in the middle position of the simulation track through the bearing, the connection of the control device can be ensured to be stable during the cyclic rotation of the moving device along the simulation track. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a vehicle fuel tank oil sloshing characteristics testing device provided in this application;

[0021] Figure 2A schematic diagram of the structure of a vehicle fuel tank oil sloshing characteristics test device provided in this application Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the control device structure of a vehicle fuel tank oil sloshing characteristics test device provided by this application;

[0023] Figure 4 A schematic diagram of the structure of a driving device of a vehicle fuel tank oil sloshing characteristics testing device provided in this application;

[0024] Figure 5 A schematic diagram of the structure of the action device of a vehicle fuel tank oil sloshing characteristics test device provided in this application;

[0025] Figure 6 A schematic diagram of the fixing fixture structure of a vehicle fuel tank oil sloshing characteristics test device provided in this application;

[0026] Figure 7 A schematic diagram of the installation of a test mechanism for a vehicle fuel tank oil sloshing characteristics test device provided in this application;

[0027] Figure 8 A schematic diagram of the test mechanism structure of a vehicle fuel tank oil sloshing characteristics test device provided in this application;

[0028] Figure 9 This is an enlarged schematic diagram of the fuel tank cap structure of a vehicle fuel tank oil sloshing characteristics testing device provided in this application.

[0029] In the figure: 1. Base; 2. Simulation track; 21. Support column; 22. Ring track; 3. Control device; 31. Turntable; 32. Bearing; 33. Liquid storage tank; 34. Control box; 35. Data cable; 36. Oil pipe; 4. Action device; 41. Tray; 42. Slide; 43. First electric push rod; 44. Spring; 45. First support plate; 46. Second support plate; 47. Clamping groove; 5. Driving device; 51. Driving motor; 52. Gear; 6. Fixing fixture; 61. Clamp; 62. Slider; 63. Lock; 7. Fuel tank; 8. Testing mechanism; 81. Fuel tank cover; 82. Fixing rod; 83. Second electric push rod; 84. Connector; 85. Test probe; 86. Connecting rod; 87. Hose; 88. Connecting line; 89. Test window; 810. High-speed camera. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0031] like Figures 1-9As shown, this embodiment proposes a vehicle fuel tank oil sloshing characteristics testing device, including a base 1, a simulation track 2 is fixedly installed on the upper end of the base 1, the simulation track 2 includes an undulating support column 21, the upper end surface of the support column 21 is provided with a ring track 22, the outer circumference of the ring track 22 is provided with convex teeth, a control device 3 is movably installed in the middle of the base 1, a moving device 4 is mounted on the simulation track 2, a driving device 5 is installed in the middle of the moving device 4, the driving device 5 includes a driving motor 51, a gear 52 is fixedly installed on the upper end of the driving motor 51, the gear 52 is meshed with the convex teeth on the outer circumference of the ring track 22, a fixing fixture 6 is movably installed on the upper end of the fixing fixture 6, a fuel tank 7 is fixed in the middle of the fixing fixture 6, a testing mechanism 8 is installed inside the fuel tank 7, and the outer end of the testing mechanism 8 is fixedly connected to the control device 3.

[0032] The control device 3 includes a turntable 31, the turntable 31 is sleeved and mounted on the upper end of the base 1, and a bearing 32 is sleeved between the turntable 31 and the base 1, a liquid storage tank 33 and a control box 34 are fixedly mounted on the upper end of the turntable 31, and a data line 35 is connected to the upper end of the control box 34, and an oil pipe 36 is fixedly connected to the upper end of the liquid storage tank 33, and the data line 35 and the oil pipe 36 are both connected to the oil tank 7. The turntable 31 is movably mounted in the middle position of the base 1 through the bearing 32, so that the turntable 31 can rotate smoothly on the base 1, reducing the resistance of the turntable 31 when rotating. The liquid storage tank 33 and the control box 34 are fixedly mounted on the upper end of the control box 34, and the data line 35 and the oil pipe 36 are fixedly connected to the oil tank 7. The interior of the box 33 is filled with a liquid medium simulating diesel and gasoline, and the liquid is transported to the interior of the fuel tank 7 through the oil pipe 36 and the pump at the upper end of the liquid storage tank 33, so that the liquid volume inside the fuel tank 7 changes, thereby performing experimental tests on different parameters of the fuel tank 7. The upper end of the control box 34 is connected to the data line 35, and the data line 35 is connected to the connecting line 88. The connecting line 88 is electrically connected to the vibration sensor and the high-speed camera 810 on the test probe 85, and the test results obtained by the vibration sensor and the high-speed camera 810 during the test process are transmitted to facilitate the summary of the oil sloshing characteristics of the tank oil.

[0033] The action device 4 includes a tray 41, and a slide groove 42 is provided on the upper end surface of the tray 41. The interior of the slide groove 42 is sleeved with a first electric push rod 43, and the circumference of the first electric push rod 43 is sleeved with a spring 44. A clamping groove 47 is provided in the middle of the tray 41, and the clamping groove 47 is clamped on the outer side of the ring rail 22. The bottom of the tray 41 is fixedly connected with a first support plate 45 and a second support plate 46. The driving device 5 is fixedly installed on the second support plate 46. The action device 4 is mounted on the simulation track 2 and is connected to the fixing fixture 6 through the slide groove 42. The left and right sliding of the slide groove 42 simulates the fixing fixture 6 to change lanes and overtake left and right. The first support plate 45 and the second support plate 46 are used to install some test instruments to facilitate the stability of the device.

[0034] The fixing fixture 6 includes two splints 61, and a slider 62 is fixedly installed on the bottom surface of the splint 61. The slider 62 is slidably installed inside the slide groove 42. The slide groove 42 is fixedly connected to the middle part of the first electric push rod 43. As the first electric push rod 43 extends and retracts, it slides left and right inside the slide groove 42. The upper end bolt of the tray 41 is fixedly installed with a lock 63. The splint 61 is slidably connected to the action device 4 through the slider 62. The splint 61 and the lock 63 fix the oil tank 7 to prevent the oil tank 7 from falling off and being damaged during the test.

[0035] The test mechanism 8 includes a fuel tank cover 81 and three test probes 85. The three test probes 85 are foldably connected with a connecting rod 86. The upper end of the central test probe 85 is fixedly connected to a connecting head 84. The lower end of the connecting head 84 is hinged to a fixing rod 82. The fixing rod 82 is fixedly mounted on the fuel tank cover 81. The fuel tank cover 81 is also hinged with a telescopic second electric push rod 83. The bottom end of the second electric push rod 83 is hinged to the higher end of the connecting head 84. The fuel tank cover 81 is threadedly connected to the oil inlet pipe of the fuel tank 7. The folded connecting rod 86 and the test probe 85 are extended into the interior of the fuel tank 7 through the oil inlet pipe of the fuel tank 7. The second electric push rod 83 is extended to flip the test probe 85 along the hinged position of the connecting head 84 and the fixing rod 82. , until the test probe rod 85 is parallel to the inner wall side of the fuel tank 7, which makes it convenient to monitor the shaking of the oil in the fuel tank 7 through the vibration sensor and high-speed camera 810 installed on the test probe rod 85. After the connecting rod 86 is folded, the three test probe rods 85 are retracted. The overall width of the retracted connecting rod 86 and the test probe rod 85 is smaller than the width of the oil inlet pipe of the fuel tank 7. The connecting head 84 connects the test probe rod 85 and the connecting rod 86 as a whole to the bottom of the fuel tank cover 81. When the second electric push rod 83 is tightened, the folded connecting rod 86 and the test probe rod 85 are easily withdrawn from the oil inlet pipe of the fuel tank 7, so that the shaking process of the oil in the fuel tank 7 can be recorded more clearly, which increases the understanding of the internal structure of the fuel tank and the product performance.

[0036] A hose 87 is fixedly installed in the middle of the fuel tank cover 81, one end of the hose 87 is fixedly connected to the control device 3, and an electric oil pump is fixedly connected to the connection end between the control device 3 and the hose 87. The other end of the hose 87 is a duckbill-shaped long tube that extends straight into the bottom of the fuel tank 7. The hose 87 is connected to the liquid storage tank 33 to facilitate the extraction and input of the oil simulation liquid inside the fuel tank 7, thereby adjusting the volume of the liquid inside the fuel tank 7, and facilitating the sloshing characteristic test and analysis of the liquid sloshing when the amount of liquid inside the fuel tank 7 is different, so that the experimental data is more accurate and effective.

[0037] The simulation track 2 consists of two parallel tracks, one low and one high, with inclined C-shaped curved tracks at both ends for transition connection. The simulation track 2 has ups and downs and is set to be able to reflect different road conditions and different traffic situations at the same time, so as to facilitate more efficient and accurate acquisition of test data during the repeated testing process.

[0038] The test probe 85 is close to the side wall of the oil tank 7. Multiple vibration sensors are set at equal distances on the test probe 85. A test window 89 is set on the upper part of the test probe 85. The test window 89 is a high-strength quartz glass observation window. A high-speed camera 810 is fixedly installed inside the test window 89. The multiple vibration sensors installed on the test probe 85 capture and record the impact generated when the liquid shakes. The test window 89 has corrosion resistance and impact resistance. The high-speed camera 810 can capture the shaking amplitude and shaking cross-section of the liquid to obtain more realistic data.

[0039] Both sides of the tray 41 are provided with protruding edges, and the two sides of the tray 41 are limited to prevent the fixing clamp 6 from being separated from the body during the sliding process, thereby ensuring the stability of the device.

[0040] Specifically, when the vehicle fuel tank oil sloshing characteristics test device is used: the moving device 4 is mounted on the simulation track 2, the driving motor 51 drives the gear 52 to move along the circular track 22, and irregularly accelerates, decelerates, rotates and brakes to simulate the motion state of the vehicle, the chute 42 is connected to the fixing fixture 6, and the fuel tank 7 is fixed through the fuel tank 7, and the oil pipe 36 at the upper end of the liquid storage tank 33 transports liquid into the interior of the fuel tank 7, causing the liquid volume inside the fuel tank 7 to change, thereby performing experimental tests on different parameters of the fuel tank 7; the test probe 85 The vibration sensor and high-speed camera 810 installed on it monitor the shaking of the oil in the oil tank 7, so that the shaking process of the oil in the oil tank 7 can be recorded more clearly; the multiple vibration sensors installed on the test probe 85 capture and record the impact generated when the liquid shakes, the test window 89 has corrosion resistance and impact resistance, and the high-speed camera 810 can capture the shaking amplitude and shaking cross-section of the liquid to obtain more realistic data. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0041] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A vehicle fuel tank oil sloshing characteristics testing device, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly mounted with a simulation track (2), the simulation track (2) includes an undulating support column (21), the upper end surface of the support column (21) is provided with a ring track (22), the outer peripheral surface of the ring track (22) is provided with convex teeth, the middle of the base (1) is movably mounted with a control device (3), the simulation track (2) is mounted with a motion device (4), the middle of the motion device (4) is provided with a driving device (5), the driving device (5) includes a driving motor (51), the upper end of the driving motor (51) is fixedly mounted with a gear (52), the gear (52) is meshed with the convex teeth on the outer peripheral surface of the ring track (22), the upper end of the motion device (4) is movably mounted with a fixing fixture (6), the middle of the fixing fixture (6) is fixed with an oil tank (7), the interior of the oil tank (7) is provided with a testing mechanism (8), the outer end of the testing mechanism (8) is fixedly connected to the control device (3); The control device (3) includes a turntable (31), the turntable (31) is sleeved and mounted on the upper end of the base (1), and a bearing (32) is sleeved between the turntable (31) and the base (1), a liquid storage tank (33) and a control box (34) are fixedly mounted on the upper end of the turntable (31), and a data line (35) is connected to the upper end of the control box (34), and an oil pipe (36) is fixedly connected to the upper end of the liquid storage tank (33), and both the data line (35) and the oil pipe (36) are connected to the oil tank (7); The test mechanism (8) comprises a fuel tank cover (81) and three test probes (85), wherein a connecting rod (86) is folded and connected between the three test probes (85), wherein the upper end of one of the test probes (85) is fixedly connected to a connector (84), and the lower end of the connector (84) is hinged to a fixing rod (82), and the fixing rod (82) is fixedly mounted on the fuel tank cover (81). The fuel tank cover (81) is also hinged to a telescopic second electric push rod (83), and the lower end of the second electric push rod (83) is hinged to the upper end of the connector (84); The test probe (85) is close to the side wall of the oil tank (7), and a plurality of vibration sensors are arranged at equal distances on the test probe (85). A test window (89) is provided on the upper section of the test probe (85), and the test window (89) is a high-strength quartz glass observation window. A high-speed camera (810) is fixedly installed inside the test window (89).

2. The vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: The action device (4) includes a tray (41), the upper end surface of the tray (41) is provided with a slide groove (42), the interior of the slide groove (42) is sleeved with a first electric push rod (43), the circumference of the first electric push rod (43) is sleeved with a spring (44), the middle of the tray (41) is provided with a clamping groove (47), the clamping groove (47) is clamped on the outer side of the ring rail (22), the bottom of the tray (41) is fixedly connected with a first support plate (45) and a second support plate (46), and the driving device (5) is fixedly mounted on the second support plate (46).

3. The vehicle fuel tank oil sloshing characteristics testing device according to claim 2, characterized in that: The fixing fixture (6) comprises two clamps (61), a slider (62) is fixedly mounted on the bottom surface of the clamp (61), the slider (62) is slidably mounted inside the slide groove (42), and a lock buckle (63) is fixedly mounted on the upper end bolt of the tray (41).

4. The vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: A hose (87) is fixedly installed in the middle of the fuel tank cover (81), one end of the hose (87) is fixedly connected to the control device (3), and the connecting end of the control device (3) and the hose (87) is fixedly connected to an electric oil pump. The other end of the hose (87) is a long duckbill-shaped tube that extends straight into the bottom of the fuel tank (7).

5. The vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: The simulation track (2) is composed of two parallel tracks, one low and one high, and inclined C-shaped curved tracks are provided at both ends of the two parallel tracks for transition connection.

6. The vehicle fuel tank oil sloshing characteristics testing device according to claim 2, characterized in that: Both sides of the tray (41) are provided with protruding edges.

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