CN212300865U - Heavy truck vehicle fuel tank oil liquid rocks characteristic test device - Google Patents

Abstract

The utility model discloses a heavy truck vehicle fuel tank fluid rocks characteristic test device belongs to oil tank test technical field. The device comprises a power unit and a test piece connecting unit; the power unit comprises a bottom frame and a driver, the bottom frame is fixedly arranged on the ground, the driver is arranged on the bottom frame, and the output end of the driver is provided with a reciprocating transmission mechanism; the test piece connecting unit comprises a sliding support, a fixed support and an oil tank connecting piece, the sliding support is arranged on the bottom frame in a sliding mode, the sliding support is movably connected with the reciprocating transmission mechanism, hinged supports I are fixedly connected to the middle positions of the front side and the rear side of the sliding support, hinged supports II are fixedly connected to the middle positions of the front side and the rear side of the fixed support, the two hinged supports II and the corresponding hinged supports are connected with connecting pins in a shared mode, an elastic buffer structure is connected between the fixed support and the sliding support, and the oil tank connecting piece is fixedly installed on the fixed support. The motion condition of the fuel tank of the heavy truck vehicle is truly simulated, and the structure improvement or research and development of the actual fuel tank are positively achieved.

Description

Heavy truck vehicle fuel tank oil liquid rocks characteristic test device

Technical Field

The utility model relates to a technical field of oil tank test especially relates to a heavy truck vehicle fuel tank fluid rocks characteristic test device.

Background

Automobile transportation occupies an important position in national economy and social production in China, and the road freight volume accounts for about 70 percent of the total volume in railway, road, waterway, air transportation and pipeline transportation. The heavy truck has the advantages of point-to-point, convenience, rapidness, relatively low freight price and the like, and plays an important role as a main transport tool for road freight. Similarly, the heavy truck has large loading capacity and severe driving conditions, so the performance requirement of the heavy truck is further improved, and the heavy truck not only comprises the aspects of power, oil and the like, but also is more important to be safe.

The heavy truck can not avoid the conditions of speed change and braking in the running process, when the conditions occur, the phenomenon of great shaking of oil in the fuel tank can occur, when some poor roads run upwards for use, the vibration of each part of the automobile is severe, the phenomenon of turbulence of the oil in the fuel tank can occur, the structural damage of the fuel tank is very easy to cause, and the potential safety hazard is caused to the running of the vehicle. The oil liquid is shaken to influence the structural stability of the fuel tank, and certain shaking noise can be transmitted to the interior of the vehicle through a structure or an air medium, so that certain trouble is caused to a driver and passengers in the vehicle. The determination of the fuel tank structure is of great importance in order to ensure the performance of the fuel tank.

According to the prior patent searched for in China, the automobile oil tank impact test bed (CN200720027784.2) is characterized in that a cylinder and more than one guide rail are fixed on a base, a workbench for fixing an oil tank is seated on the guide rail, one end of the workbench is connected with the front end of a piston rod of the cylinder, buffers are respectively fixed on the outer sides of two ends of the workbench on the base, the receiving end of each buffer is opposite to the workbench, a travel switch and a counter are fixed on one side of the base, and a stop block matched with the travel switch and the counter is arranged on one side of the workbench. The reciprocating motion of the piston rod of the cylinder can be realized by combining a conventional operation control device with the cylinder and a travel switch, and the reciprocating motion times of the piston rod of the cylinder are recorded by a counter. The impact resistance of the fuel tank can only be simulated, but the motion condition of the fuel tank of a heavy truck vehicle is difficult to truly simulate, and the structural improvement or research and development effect of the actual fuel tank is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art not enough, so provide a heavy truck vehicle fuel tank fluid and rock characteristic test device, can simulate each item index that real motion condition of heavy truck vehicle fuel tank tested the fuel tank, realize having played positive effect to the institutional advancement or the research and development of reality fuel tank.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a heavy truck vehicle fuel tank oil liquid sloshing characteristic testing device comprises a bench test platform, wherein the bench test platform comprises a test piece connecting unit and a power unit;

the power unit comprises a bottom frame and a driver, the bottom frame is fixedly arranged on the ground, the driver is arranged on the bottom frame, and the output end of the driver is provided with a reciprocating transmission mechanism;

the test piece connecting unit comprises a sliding support, a fixed support and an oil tank connecting piece, the sliding support is arranged on the bottom frame in a sliding mode, the sliding support is movably connected with the reciprocating transmission mechanism, the middle positions of the front side and the rear side of the sliding support are fixedly connected with a first hinged support, the middle positions of the front side and the rear side of the fixed support are fixedly connected with a second hinged support, the two hinged supports and the corresponding first hinged support are connected with a connecting pin together, an elastic buffer structure is connected between the fixed support and the sliding support, and the oil tank connecting piece is fixedly installed on the fixed support.

Further preferred scheme, the elastic buffering structure includes cylinder dog, compression spring and buffering rubber, the equal fixedly connected with cylinder dog in four corners of the upper surface of the support that slides, the outside cover of cylinder dog is equipped with compression spring, the lower surface of fixed bolster is provided with the buffering rubber that sets up with compression spring is relative.

Further preferably, the reciprocating transmission mechanism comprises a crank, a connecting rod and a third hinged support, the crank is fixedly connected to an output shaft of the driver, one end of the connecting rod is rotatably connected with the crank, the other end of the connecting rod is rotatably connected with the third hinged support, and the third hinged support is fixedly installed on the sliding support.

In a further preferred scheme, two guide rails are arranged on the front and back of the bottom frame, dovetail grooves are formed in two sides of each of the two guide rails, a guide wheel and a guide sliding block are arranged on the lower surface of the sliding support, the guide wheel is arranged on the guide rails in a rolling mode, and a limit groove matched with the guide rails is formed in the guide sliding block.

According to a further preferable scheme, the oil tank connecting piece comprises a supporting plate, oil tank brackets, straps, upper penetrating pins and lower penetrating pins, the supporting plate is fixedly connected to a fixing support, the oil tank brackets, the straps, the upper penetrating pins and the lower penetrating pins are respectively provided with two groups, the two groups of oil tank brackets are respectively fixedly connected to the supporting plate, the connecting positions of the two groups of oil tank brackets are respectively arranged on three partition lines of the supporting plate, one ends of the two groups of straps are fixedly connected with the tops of the corresponding oil tank brackets through the corresponding upper penetrating pins, and the other ends of the two groups of straps are fixedly connected with the bottoms of the corresponding oil tank brackets through the corresponding lower penetrating pins.

Further preferably, the two groups of the straps are respectively positioned on the outer sides of the wave-proof plates arranged in parallel in the oil tank and are overlapped in position.

Further preferred scheme still includes the test unit, the test unit includes vibration sensor, resistance-type foil gage, oil pressure sensor, floater level gauge and PLC treater, vibration sensor arranges on the oil tank bracket that corresponds and the strap that corresponds, resistance-type foil gage is arranged on breakwater and oil tank end cover, oil pressure sensor arranges on the oil tank end cover, the floater level gauge is arranged on the oil tank wall between fuel end cover and breakwater, the PLC treater is handled the signal of vibration sensor, resistance-type foil gage, oil pressure sensor and floater level gauge collection and is exported the result.

In a further preferred scheme, the underframe, the fixed support and the sliding support are all made of groove steel through welding, four reinforcing beams fixedly arranged with the support plate are arranged on the fixed support, and the reinforcing beams positioned on the left side and the right side form a triangular structure.

Further preferably, the centers of rotation circles of the third hinged support and the crank are located in the same vertical plane.

The utility model also discloses a test method of heavy truck vehicle fuel tank fluid rock characteristic testing arrangement, including following step:

A. firstly, arranging vibration sensors on an oil tank bracket and a strap, arranging resistance type strain gauges on a breakwater and an oil tank end cover, arranging an oil pressure sensor on the oil tank end cover, and arranging a floating ball liquid level meter on the wall surface of an oil tank between the oil tank end cover and the breakwater;

B. fixing the fuel tank on a support plate of a fixed support through a fuel tank bracket, a strap, an upper through pin and a lower through pin, wherein the strap is hooped on the fuel tank on the outer side of the breakwater and is overlapped with the position of the breakwater;

C. then, a driver is started, a connecting rod is driven to reciprocate through a crank, the sliding support is driven to reciprocate left and right through a guide slide block, a guide wheel and a guide rail on the bottom frame, the fixed support and the fuel tank are relatively static and swing left and right under the action of a hinged support I, a hinged support II, a compression spring, a cylindrical stop block and buffer rubber to realize a simulated suspension structure, and signals are acquired at corresponding positions through a vibration sensor, a resistance type strain gauge, an oil pressure sensor and a floating ball liquid level meter;

D. and finally, detaching the fixed support, fixing the fixed support on the real vehicle through four bolts, and acquiring signals of all parts of the vibration sensor, the resistance type strain gauge, the oil pressure sensor and the floating ball liquid level piece when the real vehicle is relatively static with the fuel tank in the driving process.

Compared with the prior art, the utility model discloses possess following beneficial effect:

the utility model discloses well driving piece drives through reciprocating transmission mechanism and slides the support and realize reciprocating motion on the chassis, and the motion condition that real highway section oil tank was simulated through elastic buffer structure and hinged-support one and hinged-support two relative rotations to the fixed bolster simultaneously has guaranteed the horizontality of fixed bolster when initial to the suspended structure of oil tank has been simulated. Elastic buffer structure adopts cushion rubber, cylinder dog and compression spring, utilizes compression spring to simulate out the true condition of rocking and cushion rubber cushions the fixed bolster and prevents that it from taking place direct collision and ruining its structure. Meanwhile, the sliding support realizes a sliding state through the guide sliding block and the guide wheel, and the guide sliding block and the guide wheel are combined and used together with the guide rail, so that the friction force is reduced, and the positioning requirement of sliding connection is met. The connecting position of the oil tank bracket is on a dividing line which divides the supporting plate into three parts equally, thereby avoiding the fatigue damage caused by the stress concentration of the fixed support. Meanwhile, the hoop is hooped on the outer side of the wave-proof plate to fix the wave-proof plate. And each part of the oil tank is subjected to signal acquisition through the detection unit, so that the requirements of detecting the impact test of the oil liquid on the oil tank during controllability and ideal road conditions are comprehensively met. And then, the fixed support is fixedly arranged on the real vehicle, so that the requirement of the impact test of the oil liquid on the fuel tank is detected when the randomness and authenticity road conditions are realized.

Drawings

FIG. 1 is a side view of a fuel tank rack test platform according to the present invention;

FIG. 2 is a left side view of a middle fuel tank bench test platform according to the present invention;

FIG. 3 is a partial enlarged view A of the compression spring and the cylindrical stopper in the left side view of the middle stage testing platform of the present invention;

FIG. 4 is a partial enlarged view B of the guide rail and the guide slider in the left side view of the middle stage test platform of the present invention;

FIG. 5 is a front view of the test platform of the present invention;

fig. 6 is a partial enlarged view D of the fixed frame and the real vehicle portion in the front view of the real vehicle testing platform of the present invention;

FIG. 7 shows the arrangement of vibration sensors according to the present invention;

FIG. 8 is the layout position (C-C cross section) of the resistance strain gauge, the oil pressure sensor and the float level meter of the present invention;

fig. 9 shows the arrangement of the resistance strain gauge in the specific position of the breakwater according to the present invention;

FIG. 10 shows a resistance strain gauge and an oil pressure sensor disposed at a specific position of a fuel tank end cap according to the present invention;

fig. 11 is a flow chart of the test of the middle test system of the present invention.

In the figure: 1. a chassis; 2. a driver; 3. a sliding support; 4. fixing a bracket; 5. a first hinged support; 6. a second hinged support; 7. a cylindrical stopper; 8. a compression spring; 9. a cushion rubber; 10. a crank; 11. a connecting rod; 12. a third hinged support; 13. a guide rail; 14. a guide wheel; 15. a guide slider; 16. a support plate; 17. a tank bracket; 18. a cuff; 19. a wave-proof plate; 20. an upper pin is penetrated; 21. a lower pin is penetrated; 22. an oil tank end cover; 23. and (5) carrying out real vehicle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1 to 11, a heavy truck vehicle fuel tank oil sloshing characteristic testing device comprises a bench test platform, wherein the bench test platform comprises a test piece connecting unit and a power unit, the power unit comprises a chassis 1 and a driver 2, the chassis 1 is fixedly arranged on the ground, the driver 2 is arranged on the chassis 1, the driver 2 comprises a worm gear speed reducer and a bearing seat for installing a main shaft, the output end of the driver 2 is provided with a reciprocating transmission mechanism, the test piece connecting unit comprises a sliding support 3, a fixed support 4 and an oil tank connecting piece, the sliding support 3 is arranged on the chassis 1 in a sliding manner, the sliding support 3 is movably connected with the reciprocating transmission mechanism, the sliding support 3 realizes left-right reciprocating movement under the effect that the driver 2 drives the reciprocating transmission mechanism, and the middle positions of the front side and the rear side of the sliding support 3 are fixedly connected with a hinged support 5, the middle positions of the front side and the rear side of the fixed support 4 are fixedly connected with a second hinged support 6, the second hinged support 6 and a corresponding first hinged support 5 are jointly connected with a connecting pin, an elastic buffer structure is connected between the fixed support 4 and the sliding support 3, and the oil tank connecting piece is fixedly installed on the fixed support 4. When sliding support 3 moves to leftmost side or rightmost side then following the emergence and turning to the right side or to the left side, fixed bolster 4 realizes deflecting right or left under inertial action, and then and under elastic buffer structure's effect, the realization resets and realizes rocking about the oil tank of connecting the oil tank to simulate out the suspended structure of oil tank, make the experiment more real effective.

Further preferred scheme, the elastic buffering structure includes cylinder dog 7, compression spring 8 and buffering rubber 9, the equal fixedly connected with cylinder dog 7 in four corners of the upper surface of support 3 slides, the outside cover of cylinder dog 7 is equipped with compression spring 8, the lower surface of fixed bolster 4 is provided with the buffering rubber 9 that sets up with compression spring 8 relatively. Through compression spring 8 to rocking the conversion of in-process energy and to simulating out suspended structure comparatively truthfully, setting up of cushion rubber 9 makes the wearing and tearing between the device inner structure less simultaneously, can also the convenient to detach installation. The fixing bracket 9 can be made horizontal in the initial state and the final state by the cushion rubber 9.

Further preferably, the reciprocating transmission mechanism comprises a crank 10, a connecting rod 11 and a three hinged support 12, the crank 10 is fixedly connected to an output shaft of the driver 2, one end of the connecting rod 11 is rotatably connected with the crank 10, the other end of the connecting rod is rotatably connected with the three hinged support 12, and the three hinged support 12 is fixedly mounted on the sliding support 3. The design of the crank rocker mechanism enables variable-speed reciprocating motion, meanwhile, the rotating circle centers of the three hinged supports 12 and the crank 10 are located in the same vertical plane, no quick return characteristic exists, and the included angle of the polar positions is zero.

Further preferably, two guide rails 13 are arranged on the chassis 1 in a front-back manner, two sides of each of the two guide rails 13 are provided with a dovetail groove, a guide wheel 14 and a guide sliding block 15 are arranged on the lower surface of the sliding support 3, the guide wheel 14 is arranged on the guide rails 13 in a rolling manner, and the guide sliding block 15 is provided with a limit groove matched with the guide rails 13. The guide wheel 14 and the guide rail 13 are contacted and then roll, and meanwhile, the guide sliding block 15 and the guide rail 13 are in sliding fit left and right without any movement front and back, so that the friction force between the guide sliding block and the guide rail is reduced, and the positioning requirement of sliding left and right can be met.

Further preferably, the oil tank connecting piece comprises a supporting plate 16, oil tank brackets 17, a belt 18, upper penetrating pins 20 and lower penetrating pins 21, the supporting plate 16 is vertically and fixedly connected to the fixing support 4, the oil tank brackets 17, the belt 18, the upper penetrating pins 20 and the lower penetrating pins 21 are respectively provided with two groups, the two groups of oil tank brackets 17 are respectively and fixedly connected to the supporting plate 16, the connecting positions of the two groups of oil tank brackets 17 are respectively on three partition lines of the supporting plate 16, one ends of the two groups of belt 18 are fixedly connected to the tops of the corresponding oil tank brackets 17 through the corresponding upper penetrating pins 20, and the other ends of the two groups of belt 18 are fixedly connected to the bottoms of the corresponding oil tank brackets 17 through the corresponding lower penetrating pins 21. The tank bracket 17 is fixed to the partition lines of the support plate 16, thereby preventing fatigue failure due to stress concentration of the fixing bracket 4.

Further preferably, the two groups of the bands 18 are respectively positioned outside the breakwaters 19 arranged in parallel inside the oil tank and are overlapped in position. The special position of the strap 18 is used to fix the breakwater 19 inside, so as to prevent the breakwater 19 from being damaged during the test.

Further preferred scheme still includes the test unit, the test unit includes vibration sensor, resistance-type foil gage, oil pressure sensor, floater level gauge and PLC treater, vibration sensor arranges on corresponding oil tank bracket 17 and corresponding strap 18, resistance-type foil gage arranges on breakwater 19 and oil tank end cover 22, oil pressure sensor arranges on oil tank end cover 22, the floater level gauge arranges on the oil tank wall between oil tank end cover 22 and breakwater 19, the PLC treater is handled the signal of vibration sensor, resistance-type foil gage, oil pressure sensor and floater level gauge collection and is exported the result.

In a further preferable scheme, the underframe 1, the fixed support 4 and the sliding support 3 are all made of channel steel through welding, four reinforcing beams fixedly arranged with the support plate 16 are arranged on the fixed support 4, and the reinforcing beams positioned on the left side and the right side form a triangular structure.

According to the existing problems of the fuel tank of the heavy truck vehicle, the test system has four functions, namely the vibration characteristic analysis of the whole structure of the fuel tank, the stress-strain characteristic analysis of a breakwater and a partition plate, the distribution rule analysis of a shaking pressure field of oil liquid and the fluctuation characteristic analysis of an oil liquid flow field.

In order to accomplish fuel tank overall structure vibration characteristic analysis, the utility model discloses utilize vibration sensor to obtain the fuel tank and rock excitation frequency and its natural frequency's vibration signal. Under different working conditions, the road surface can cause different types of excitation and different sizes of fuel tanks through tires, when the external excitation vibration frequency is close to the natural frequency of the fuel tanks, the fuel tanks can shake violently, larger noise is generated, the shedding of the anti-rolling plates occurs seriously, and the tank body is torn. To avoid or reduce resonance in the fuel tank, it is necessary to analyze the vibration characteristics thereof. The maximum vibration signals generated by the fuel tank are basically located near the connection part of the breakwater and the tank body through finite element analysis, so that the vibration signals of the parts are necessary to be detected.

In order to complete analysis of stress-strain characteristics of the breakwater and the partition plate and analysis of distribution rules of a shaking pressure field of oil liquid, the utility model utilizes a resistance-type strain gauge and an oil pressure sensor to obtain stress signals and strain signals received by the breakwater and the partition plate; monitoring a pressure field distribution rule under oil pressure through a stress signal, and collecting stress change data of oil acting on a fuel tank structure; and the strain signal can realize the monitoring of the mechanical property of the structure, and finally, the analysis of the stress-strain characteristic of the structure is completed. In order to avoid cyclic stress and strain damage and generate local accumulated damage on the structure, the structure of a fuel tank end cover and a breakwater is urgently required to be reasonably designed. The actual damage of the fuel tank is mostly the fracture of the fuel tank end cover and the wave guard plate, and the maximum deformation positions of the fuel tank end cover and the wave guard plate are obtained through finite element analysis, so that the stress signal and the strain signal of the fuel tank end cover and the wave guard plate in the middle are required to be detected when the fuel liquid shakes.

In order to accomplish the fluid flow field fluctuation characteristic analysis, the utility model discloses utilize the floater level gauge to obtain the liquid level signal that fluid rocked the range, when the liquid level in the fuel tank changes, free liquid level can be tracked to the liquid level signal, fills the liquid ratio down fluid to different acceleration and difference and rocks the characteristic and study, quantizes and distinguishes the fluid rocking characteristic under each operating mode and rocks the intensity to guide the fuel tank to use the selection under the operating mode commonly and subtract and shake the structural design who makes an uproar and fall. Since the position where the amplitude and frequency of the liquid level change are the largest is at both ends of the fuel tank, it is also essential to detect the liquid level signals at both ends of the fuel tank.

The resistance type strain gauge adopts a BA series strain gauge, and F601 glue is used and is pasted according to the requirements of the specification. Meanwhile, the strain gauge is coated with the epoxy resin in an oil-proof manner, so that the wiring terminal, the welding point and the strain gauge are completely immersed in the epoxy resin. And the strain signal, the vibration signal, the pressure signal and the liquid level signal are collected, analyzed and processed through a PLC.

According to the requirements of testing the impact test of the fuel tank by the detection oil during randomness and authenticity road conditions, the real vehicle test platform mainly comprises a fixed unit and a detection unit.

The fixing unit comprises a real vehicle 23, buffer rubber 9, a fixing support 4, screws, a support plate 16, bolts, nuts, a fuel tank bracket 17, a belt clamp 18, an upper penetrating pin 20, a lower penetrating pin 21 and a fuel tank. Fixing the fixed support 4 on the real vehicle 23 by using 4 screws, and fixing the fuel tank on the fixed support 4 through the fuel tank bracket 17, the strap 18, the upper penetrating pin 20 and the lower penetrating pin 21, wherein the specific fixing mode and position are the same as those of a bench test platform; when the real vehicle 23 is in the driving process, the fuel tank and the real vehicle 23 can be relatively static, and the fuel tank completes randomness and authenticity road condition tests.

Heavy truck vehicle fuel tank fluid rock characteristic test system, both contained the testing arrangement who comprises bench test platform and real car test platform, also contained four kinds of function evaluation fluid and rocked the characteristic. The bench test platform and the real vehicle test platform can realize the motion conditions of the fuel tanks under different road condition modes, the bench test platform and the real vehicle test platform are mutually referenced and inseparable, the test system has four functions to evaluate the oil liquid shaking characteristic, the structure optimization design of the fuel tanks is completed, and a reliable basis is provided for manufacturing.

Example 2:

a test method of a heavy truck vehicle fuel tank oil sloshing characteristic test device comprises the following steps:

A. firstly, arranging vibration sensors on an oil tank bracket 17 and a strap 18, arranging resistance type strain gauges on a breakwater plate 19 and an oil tank end cover 22, arranging an oil pressure sensor on the oil tank end cover, and arranging a floating ball liquid level meter on the wall surface of an oil tank between the oil tank end cover 22 and the breakwater plate 19;

B. fixing the fuel tank on a support plate 16 of a fixed bracket 9 through a fuel tank bracket 17, a strap 18, an upper through pin 20 and a lower through pin 21, wherein the strap 18 is hooped on the fuel tank on the outer side of a breakwater 19 and is overlapped with the position of the breakwater 19;

C. then, a driver 2 is started, a connecting rod 11 is driven to reciprocate through a crank 10, the sliding support 3 is driven to reciprocate left and right through a guide slide block 15 and a guide wheel 14 and a guide rail 13 on the bottom frame 1, the fixed support 4 and the fuel tank are relatively static, left and right swing is generated under the action of a hinged support I5, a hinged support II 6, a compression spring 8, a cylindrical stop 7 and buffer rubber 9 to realize a simulated suspension structure, signals of corresponding parts are acquired through a vibration sensor, a resistance type strain gauge, an oil pressure sensor and a floating ball liquid level meter, and then a result is output through a PLC (programmable logic controller) processor;

D. and finally, detaching the fixed support 4, fixing the fixed support 4 on the real vehicle 23 through four bolts, when the real vehicle 13 is relatively static with the fuel tank in the driving process, simultaneously carrying out signal acquisition on each part of the vibration sensor, the resistance type strain gauge, the oil pressure sensor and the floating ball liquid level piece, and then outputting a result through the PLC processor.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. According to the technical scheme of the utility model and utility model thereof think of and equal replacement or change, all should cover within the scope of protection of the utility model.

Claims (9)

1. The device for testing the oil liquid shaking characteristic of the fuel tank of the heavy truck is characterized by comprising a bench test platform, wherein the bench test platform comprises a test piece connecting unit and a power unit;

the power unit comprises an underframe (1) and a driver (2), the underframe (1) is fixedly arranged on the ground, the driver (2) is arranged on the underframe (1), and the output end of the driver (2) is provided with a reciprocating transmission mechanism;

the test piece connecting unit comprises a sliding support (3), a fixed support (4) and an oil tank connecting piece, the sliding support (3) is arranged on the bottom frame (1) in a sliding mode, the sliding support (3) is movably connected with the reciprocating transmission mechanism, the middle positions of the front side and the rear side of the sliding support (3) are respectively and fixedly connected with a hinged support (5), the middle positions of the front side and the rear side of the fixed support (4) are respectively and fixedly connected with a hinged support (6) and a corresponding hinged support (5) are respectively and commonly connected with a connecting pin, an elastic buffer structure is connected between the fixed support (4) and the sliding support (3), and the oil tank connecting piece is fixedly installed on the fixed support (4).

2. The heavy truck vehicle fuel tank oil liquid sloshing characteristic testing device according to claim 1, wherein the elastic buffering structure comprises a cylindrical stop block (7), a compression spring (8) and buffer rubber (9), the cylindrical stop block (7) is fixedly connected to four corners of the upper surface of the sliding support (3), the compression spring (8) is sleeved on the outer side of the cylindrical stop block (7), and the buffer rubber (9) opposite to the compression spring (8) is arranged on the lower surface of the fixed support (4).

3. The device for testing the oil sloshing characteristic of the fuel tank of the heavy truck as claimed in claim 1, wherein the reciprocating transmission mechanism comprises a crank (10), a connecting rod (11) and a third hinged support (12), the crank (10) is fixedly connected to an output shaft of the driver (2), one end of the connecting rod (11) is rotatably connected with the crank (10), the other end of the connecting rod is rotatably connected with the third hinged support (12), and the third hinged support (12) is fixedly installed on the sliding support (3).

4. The device for testing the fuel tank oil sloshing characteristic of the heavy truck vehicle as claimed in claim 1, wherein two guide rails (13) are arranged on the chassis (1) in a front-back manner, two sides of each guide rail (13) are provided with dovetail grooves, a guide wheel (14) and a guide sliding block (15) are arranged on the lower surface of the sliding support (3), the guide wheel (14) is arranged on the guide rails (13) in a rolling manner, and the guide sliding block (15) is provided with a limiting groove matched with the guide rails (13).

5. The device for testing the sloshing characteristic of the oil in the fuel tank of the heavy truck as claimed in claim 1, characterized in that the oil tank connecting piece comprises a supporting plate (16), an oil tank bracket (17), a strap (18), an upper penetrating pin (20) and a lower penetrating pin (21), backup pad (16) fixed connection is on fixed bolster (4), oil tank bracket (17), strap (18), go up to wear round pin (20) and wear round pin (21) down all be equipped with two sets ofly, two sets of equal fixed connection of oil tank bracket (17) is on backup pad (16), and is two sets of the hookup location of oil tank bracket (17) is respectively on backup pad (16) trisection line, and is two sets of the one end of strap (18) is through the bottom fixed connection of corresponding lower round pin (21) and the oil tank bracket (17) of passing of top fixed connection, the other end of corresponding round pin (20) and oil tank bracket (17) that corresponds on corresponding.

6. The device for testing the oil sloshing characteristic of the fuel tank of the heavy truck as claimed in claim 5, wherein the two sets of straps (18) are respectively positioned outside the breakwaters (19) arranged in parallel inside the fuel tank and are overlapped in position.

7. The device for testing the oil sloshing characteristic of the fuel tank of the heavy truck as claimed in claim 1, further comprising a testing unit, wherein the testing unit comprises a vibration sensor, a resistance strain gauge, an oil pressure sensor, a floating ball level meter and a PLC processor, the vibration sensor is arranged on a corresponding fuel tank bracket (17) and a corresponding strap (18), the resistance strain gauge is arranged on a breakwater plate (19) and a fuel tank end cover (22), the oil pressure sensor is arranged on the fuel tank end cover (22), the floating ball level meter is arranged on a fuel tank wall surface between the fuel tank end cover and the breakwater plate (19), and the PLC processor processes signals collected by the vibration sensor, the resistance strain gauge, the oil pressure sensor and the floating ball level meter and outputs results.

8. The device for testing the oil sloshing characteristic of the fuel tank of the heavy truck as claimed in claim 1, wherein the chassis (1), the fixed support (4) and the sliding support (3) are all made of channel steel through welding, four reinforcing beams fixedly arranged with the support plate (16) are arranged on the fixed support (4), and the reinforcing beams positioned on the left side and the right side form a triangular structure.

9. The device for testing the oil sloshing characteristic of the fuel tank of the heavy truck as claimed in claim 3, wherein the centers of rotation circles of the three hinged supports (12) and the crank (10) are located in the same vertical plane.

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