Vehicle fuel tank oil shaking characteristic testing device

Abstract

The invention relates to the technical field of fuel tank testing, and provides a vehicle fuel tank oil shaking characteristic testing device which comprises a base, a simulation track is fixedly installed at the upper end of the base and comprises a fluctuating supporting column, a circular track is arranged on the upper end face of the supporting column, convex teeth are arranged on the outer circumferential face of the circular track, and the convex teeth are arranged on the outer circumferential face of the circular track. A control device is movably installed in the middle of the base, a moving device is erected and installed on the simulation track, a driving device is installed in the middle of the moving device, and the driving device comprises a driving motor. The simulation track similar to a real road is arranged, the driving device drives the action device through fluctuation and turning of the simulation track, and the oil tank simulates the motion state of a vehicle in the acceleration, deceleration, rotation and braking processes on the simulation track. Therefore, the shaking phenomenon and the turbulence phenomenon of the fuel oil in the fuel tank caused by inertia can be tested through the testing mechanism, so that the structure and the product performance of the fuel tank can be researched.

Description

Technical Field

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

[0002] During the driving of a vehicle, it is inevitable to have speed changes and braking. When this occurs, the oil in the fuel tank will experience significant sloshing. When driving on some poor roads, the vibrations of various vehicle components are relatively intense, and the oil in the fuel tank will undergo turbulent flow phenomena, which can easily cause damage to the fuel tank structure, pose a safety hazard to vehicle driving, and also transmit a certain amount of sloshing noise to the vehicle interior through the structure or air medium, causing certain troubles to the driver and passengers in the vehicle.

[0003] After searching for existing Chinese patents, an automobile fuel tank impact test bench (CN200720027784.2) has a cylinder and more than one guide rail fixed on a base. A workbench for fixing the fuel tank is seated on the guide rail. One end of the workbench is connected to the front end of the piston rod of the cylinder. Buffer devices are respectively fixed on the outside of both ends of the workbench on the base, and the receiving end of each buffer device faces the workbench. A travel switch and a counter are fixed on one side of the base, and a stop block cooperating with the travel switch and the counter is provided on one side of the workbench. By combining a conventional operation control device with the cylinder and the travel switch, the reciprocating movement of the piston rod of the cylinder can be achieved, and the number of reciprocating movements of the piston rod of the cylinder is recorded by the counter. This patent can only simulate the impact resistance of the fuel tank, but it is difficult to truly simulate the movement of the vehicle fuel tank, and the improvement or research and development effect on the actual fuel tank structure is not ideal.

[0004] Therefore, we make improvements and propose a testing device for the sloshing characteristics of vehicle fuel tank oil. Summary of the Invention

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

[0006] In order to achieve the above-mentioned invention purpose, the present invention provides a test device for the oil sloshing characteristics of a vehicle fuel tank, including a base. A simulation track is fixedly installed at the upper end of the base. The simulation track includes support columns with high and low undulations. The upper end surface of the support columns is provided with a ring track. The outer peripheral surface of the ring track is provided with convex teeth. A control device is movably installed in the middle of the base. An action device is erected and installed on the simulation track. A driving device is installed in the middle of the action device. The driving device includes a driving motor. A gear is fixedly installed at the upper end of the driving motor. The gear is meshed and connected with the convex teeth on the outer peripheral surface of the ring track. A fixing fixture is movably installed at the upper end of the action device. A fuel tank is fixed in the middle of the fixing fixture. A testing mechanism is installed inside the fuel tank. The outer end of the testing mechanism is fixedly connected with the control device.

[0007] As a further scheme of the present invention, the control device includes a turntable. The turntable is sleeved and installed at 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 at the upper end of the turntable. And a data cable is connected to the upper end of the control box. A fuel pipe is fixedly connected to the upper end of the liquid storage tank. Both the data cable and the fuel pipe are connected to the fuel tank.

[0008] As a further scheme of the present invention, the action device includes a tray. A chute is opened on the upper end surface of the tray. A first electric push rod is sleeved inside the chute. A spring is sleeved around the circumference of the first electric push rod. A clamping groove is opened in the middle of the tray. The clamping groove clamps the outside of the ring track. The bottom of the tray is fixedly connected with a first support plate and a second support plate. The driving device is fixedly installed on the second support plate.

[0009] As a further scheme of the present invention, the fixing fixture includes two clamping plates. Sliders are fixedly installed on the bottom surfaces of the clamping plates. The sliders are slidably installed inside the chute. A lock is fixedly installed on the upper end of the tray by bolts.

[0010] As a further scheme of the present invention, the testing mechanism includes a fuel tank cap and three testing probe rods. A connecting rod is foldably connected between the three testing probe rods. A connecting head is fixedly connected to the upper end of the middle testing probe rod. A fixing rod is hinged to the lower end of the connecting head. The fixing rod is fixedly installed on the fuel tank cap. A telescopic second electric push rod is also hinged on the fuel tank cap. The bottom end of the second electric push rod is hinged to the upper end of the connecting head.

[0011] As a further scheme of the present invention, a hose is fixedly installed in the middle of the fuel tank cap. One end of the hose is fixedly connected with the control device. An electric oil pump is fixedly connected to the connection end of the control device and the hose. The other end of the hose is a duckbill-shaped long pipe that extends straight into the bottom of the fuel tank.

[0012] As a further solution of the present invention, the simulation track is composed of two parallel tracks, one being lower and the other higher, with inclined C-shaped curved tracks at both ends of the two parallel tracks for transitional connection.

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

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

[0015] The beneficial effects of a vehicle fuel tank oil liquid sloshing characteristic test device provided by the present invention are as follows: 1. By providing a simulation track similar to a real road, through the undulation, turning of the simulation track, and the driving device driving the moving device, the acceleration, deceleration, rotation, and braking processes of the fuel tank on the simulation track simulate the motion state of the vehicle, so that the sloshing phenomenon and turbulence phenomenon of the fuel inside the fuel tank caused by inertia can be tested by the test mechanism, in order to study the structure and product performance of the fuel tank.

[0016] 2. By installing a test mechanism at the upper opening of the fuel tank, one end of the test mechanism is provided with a hose, and the hose is connected to the oil pipe, which is convenient for adding test liquids to the fuel tank according to different experimental volumes through the oil pipe, so that the device can perform multiple cycle tests respectively under three rated volumes of 25%, 50%, and 75%, simulating the driving sloshing situation within the service life of the vehicle, making the test data of the device more real and effective.

[0017] 3. By movably installing the control device on the middle position of the simulation track through bearings, it is convenient to ensure the stable connection of the control device during the process of the moving device rotating along the simulation track in a cycle. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of a vehicle fuel tank oil liquid sloshing characteristic test device provided by the present application; Figure 2 It is a schematic structure of a vehicle fuel tank oil liquid sloshing characteristic test device provided by the present application Figure 2; Figure 3 Schematic structural diagram of the control device of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 4 Schematic structural diagram of the driving device of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 5 Schematic structural diagram of the moving device of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 6 Schematic structural diagram of the fixing fixture of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 7 Schematic installation diagram of the test mechanism of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 8 Schematic structural diagram of the test mechanism of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application; Figure 9 Enlarged schematic structural diagram of the fuel tank cap of a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank provided by the present application.

[0020] 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 line; 36, oil pipe; 4, moving device; 41, tray; 42, chute; 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, clamping plate; 62, slider; 63, lock; 7, fuel tank; 8, test mechanism; 81, fuel tank cap; 82, fixing rod; 83, second electric push rod; 84, connector; 85, test probe; 86, connecting rod; 87, hose; 88, connecting wire; 89, test window; 810, high-speed camera. Detailed implementation manners

[0021] The following combines the description of the accompanying drawings of the specification and the embodiments to make a more detailed description of the specific implementation manners of the present invention. The following embodiments are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] As Figures 1 - 9As shown in the figure, this embodiment proposes a test device for the fuel liquid sloshing characteristics of a vehicle fuel tank, which includes a base 1. A simulation track 2 is fixedly installed at the upper end of the base 1. The simulation track 2 includes support columns 21 with undulating heights. 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. A control device 3 is movably installed in the middle of the base 1. An action device 4 is installed on the simulation track 2. A driving device 5 is installed in the middle of the action device 4. The driving device 5 includes a driving motor 51. A gear 52 is fixedly installed at the upper end of the driving motor 51. The gear 52 is meshed and connected with the convex teeth on the outer peripheral surface of the ring track 22. A fixing fixture 6 is movably installed at the upper end of the action device 4. A fuel tank 7 is fixed in the middle of the fixing fixture 6. A test mechanism 8 is installed inside the fuel tank 7. The outer end of the test mechanism 8 is fixedly connected with the control device 3.

[0023] The control device 3 includes a turntable 31. The turntable 31 is sleeved and installed at 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 installed at the upper end of the turntable 31. And a data line 35 is connected to the upper end of the control box 34. A fuel pipe 36 is fixedly connected to the upper end of the liquid storage tank 33. Both the data line 35 and the fuel pipe 36 are connected to the fuel tank 7. The turntable 31 is movably installed in the middle of the base 1 through the bearing 32, so that the turntable 31 can rotate smoothly on the base 1, reducing the resistance when the turntable 31 rotates. A liquid medium simulating diesel and gasoline is filled in the liquid storage tank 33 installed on the turntable 31, and the liquid is transported into the fuel tank 7 through the fuel pipe 36 at the upper end of the liquid storage tank 33 and a pump, so that the liquid volume inside the fuel tank 7 changes, thereby conducting experimental tests with different parameters on the fuel tank 7. A data line 35 is connected to the upper end of the control box 34. The data line 35 is connected to a 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 transmits the test results obtained by the vibration sensor and the high-speed camera 810 during the test, facilitating the summary of the fuel liquid sloshing characteristics of the fuel tank.

[0024] The action device 4 includes a tray 41. A chute 42 is opened on the upper end surface of the tray 41. A first electric push rod 43 is sleeved inside the chute 42. A spring 44 is sleeved around the first electric push rod 43. A clamping groove 47 is opened in the middle of the tray 41. The clamping groove 47 clamps on the outside of the ring track 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 installed on the simulation track 2 and is connected to the fixing fixture 6 through the chute 42. The left and right sliding of the chute 42 simulates the left and right lane-changing and overtaking of the fixing fixture 6. 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.

[0025] The fixed fixture 6 includes two clamping plates 61. A slider 62 is fixedly installed on the bottom surface of the clamping plate 61. The slider 62 is slidably installed inside the chute 42. The chute 42 is fixedly connected to the middle of the first electric push rod 43. As the first electric push rod 43 expands and contracts, it slides left and right inside the chute 42. A latch 63 is fixedly installed by bolts at the upper end of the tray 41. The clamping plate 61 is slidably connected to the mobile device 4 through the slider 62. The clamping plate 61 and the latch 63 fix the fuel tank 7 to prevent the fuel tank 7 from falling off and being damaged during the test process.

[0026] The test mechanism 8 includes a fuel tank cap 81 and three test probes 85. A connecting rod 86 is foldably connected between the three test probes 85. The upper end of the middle test probe 85 is fixedly connected to a connecting head 84. A fixing rod 82 is hinged to the lower end of the connecting head 84. The fixing rod 82 is fixedly installed on the fuel tank cap 81. A telescopic second electric push rod 83 is also hinged on the fuel tank cap 81. The bottom end of the second electric push rod 83 is hinged to the upper end of the connecting head 84. The fuel tank cap 81 is threadedly connected to the fuel inlet of the fuel tank 7. The folded connecting rod 86 and the test probes 85 are inserted into the fuel tank 7 through the fuel inlet of the fuel tank 7. When the second electric push rod 83 extends, the test probe 85 is flipped along the position where the connecting head 84 is hinged to the fixing rod 82 until the test probe 85 is parallel and close to one side of the inner wall of the fuel tank 7, which is convenient for monitoring the sloshing condition of the oil in the fuel tank 7 through the vibration sensor and the high-speed camera 810 installed on the test probe 85. After the connecting rod 86 is folded, the three test probes 85 are retracted. The overall width of the retracted connecting rod 86 and the test probes 85 is smaller than the width of the fuel inlet of the fuel tank 7. The connecting head 84 connects the test probes 85 and the connecting rod 86 as a whole to the bottom of the fuel tank cap 81. When the second electric push rod 83 is retracted, the folded connecting rod 86 and the test probes 85 can be easily withdrawn from the fuel inlet of the fuel tank 7, making the sloshing process of the oil in the fuel tank 7 more clearly and definitely recorded, and increasing the understanding of the internal structure of the fuel tank and the product performance.

[0027] A hose 87 is fixedly installed in the middle of the fuel tank cap 81. One end of the hose 87 is fixedly connected to the control device 3. An electric oil pump is fixedly connected to the connection end of the control device 3 and the hose 87. The other end of the hose 87 is a duckbill-shaped long tube that extends straight to the bottom of the fuel tank 7. The hose 87 is connected to the liquid storage tank 33, so as to pump out and input the oil in the fuel tank 7 as a simulated liquid, thereby adjusting the volume of the liquid inside the fuel tank 7, facilitating the sloshing characteristic test and analysis of the liquid sloshing when the liquid volume inside the fuel tank 7 is different, and making the experimental data more accurate and effective.

[0028] The simulation track 2 consists of two parallel tracks, one low and one high, arranged front and back, and inclined C-shaped curved tracks are provided at both ends of the two parallel tracks for transitional connection. The undulating and variable nature of the simulation track 2 is set on the premise of being able to simultaneously reflect different road conditions and different traffic situations, facilitating the more efficient and accurate acquisition of test data during the cyclic and repetitive test process.

[0029] The test probe 85 is close to the side wall of the fuel tank 7. A plurality of vibration sensors are equidistantly arranged on the test probe 85. A test window 89 is provided on the upper section 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 plurality of vibration sensors installed on the test probe 85 capture and record the impacts generated during liquid sloshing. The test window 89 has corrosion resistance and impact resistance properties. The high-speed camera 810 can capture the sloshing amplitude and sloshing cross-section of the liquid to obtain more real data.

[0030] Protruding edges are provided on both sides of the tray 41 to limit both sides of the tray 41 and prevent the fixing fixture 6 from becoming disengaged during the sliding process, ensuring the stability of the device.

[0031] Specifically, when the vehicle fuel tank liquid sloshing characteristic test device is in use: The moving device 4 is erected on the simulation track 2. The driving motor 51 drives the gear 52 to move along the loop track 22, and accelerates, decelerates, rotates, and brakes irregularly 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. The liquid in the upper end of the liquid storage tank 33 is conveyed into the fuel tank 7 through the oil pipe 36, causing the liquid volume inside the fuel tank 7 to change, thereby conducting experimental tests with different parameters on the fuel tank 7; the vibration sensors and the high-speed camera 810 installed on the test probe 85 monitor the sloshing condition of the liquid inside the fuel tank 7, making the sloshing process of the liquid inside the fuel tank 7 more clearly recorded; the plurality of vibration sensors installed on the test probe 85 capture and record the impacts generated during liquid sloshing. The test window 89 has corrosion resistance and impact resistance properties. The high-speed camera 810 can capture the sloshing amplitude and sloshing cross-section of the liquid to obtain more real data. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0032] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications, or equivalent replacements 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 all be covered within 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: A simulation track (2) is fixedly mounted on the upper end of the base (1), the simulation track (2) comprising an undulating support column (21), the upper end surface of the support column (21) being provided with a ring track (22), the outer peripheral surface of the ring track (22) being provided with convex teeth, a control device (3) is movably mounted in the middle of the base (1), a motion device (4) is mounted on the simulation track (2), a driving device (5) is mounted in the middle of the motion device (4), the driving device (5) comprises a driving motor (51), a gear (52) is fixedly mounted on the upper end of the driving motor (51), the gear (52) is meshedly connected with the convex teeth on the outer peripheral surface of the ring track (22), a fixing fixture (6) is movably mounted on the upper end of the motion device (4), an oil tank (7) is fixed in the middle of the fixing fixture (6), a testing mechanism (8) is mounted inside the oil tank (7), and the outer end of the testing mechanism (8) is fixedly connected to the control device (3).

2. A vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: The control device (3) comprises a rotating disk (31), the rotating disk (31) being sleeved and mounted on the upper end of the base (1), and a bearing (32) being sleeved between the rotating disk (31) and the base (1), a liquid storage tank (33) and a control box (34) being fixedly mounted on the upper end of the rotating disk (31), and a data line (35) being connected to the upper end of the control box (34), and an oil pipe (36) being fixedly connected to the upper end of the liquid storage tank (33), and both the data line (35) and the oil pipe (36) being connected to the oil tank (7).

3. The vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: The action device (4) comprises 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).

4. A vehicle fuel tank oil sloshing characteristics testing device according to claim 3, characterized in that: The fixing fixture (6) comprises two clamping plates (61), a slider (62) is fixedly mounted on the bottom surface of the clamping plates (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).

5. The vehicle fuel tank oil sloshing characteristics testing device according to claim 1, characterized in that: 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 a central test probe (85) is fixedly connected to a connecting head (84), a 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), and a telescopic second electric push rod (83) is also hinged to the fuel tank cover (81), the lower end of the second electric push rod (83) is hinged to the higher end of the connecting head (84).

6. A vehicle fuel tank oil sloshing characteristics testing device according to claim 5, characterized in that: A hose (87) is fixedly mounted in the middle of the oil tank cover (81); one end of the hose (87) is fixedly connected to the control device (3); an electric oil pump is fixedly connected to the connecting end of the control device (3) and the hose (87); and the other end of the hose (87) is a duckbill-shaped long tube that extends straight into the bottom of the oil tank (7).

7. 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 arranged at both ends of the two parallel tracks for transition connection.

8. The vehicle fuel tank oil sloshing characteristics testing device according to claim 5, characterized in that: The test probe rod (85) is close to the side wall of the oil tank (7), a plurality of vibration sensors are arranged at equal distances on the test probe rod (85), a test window (89) is arranged on the upper section of the test probe rod (85), the test window (89) is a high-strength quartz glass observation window, and a high-speed camera (810) is fixedly installed inside the test window (89).

9. The vehicle fuel tank oil sloshing characteristics testing device according to claim 3, characterized in that: Both sides of the tray (41) are provided with protruding edges.

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