CN108181100A - Simulate the electric vehicle hydraulic buffer reliability test of actual condition loading - Google Patents

Simulate the electric vehicle hydraulic buffer reliability test of actual condition loading Download PDF

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Publication number
CN108181100A
CN108181100A CN201711485943.8A CN201711485943A CN108181100A CN 108181100 A CN108181100 A CN 108181100A CN 201711485943 A CN201711485943 A CN 201711485943A CN 108181100 A CN108181100 A CN 108181100A
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vertical
axis
mouths
horizontal
hydraulic cylinder
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CN108181100B (en
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李洪洲
李泽彪
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Beihua University
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Beihua University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention belongs to damper reliability test technical fields, it is related to a kind of electric vehicle hydraulic buffer reliability test that can simulate actual condition loading, overcomes the problem of current reliability test can not carry out reliability test to electric vehicle hydraulic damper;Including Vertical loading part, horizontal addload part, counterweight loading section, hydraulic part, humiture loading section;The axis of the vertical hydraulic cylinder of the Vertical loading part, the axis of No. 1 pull pressure sensor, the axis of vertical force application rod, the symmetrical center line of vertical support frame are conllinear, and perpendicular to the upper surface of ground black iron;The axis of the horizontal hydraulic cylinder of the horizontal addload part, the axis of No. 2 pull pressure sensor, straight optical axis axis collinear, and be parallel to the upper surface of ground black iron;The front fork symmetrical center line, the axis of force rod, the symmetrical center line of counterweight platform are conllinear.

Description

Simulate the electric vehicle hydraulic buffer reliability test of actual condition loading
Technical field
The invention belongs to damper reliability test technical field more particularly to it is a kind of can simulate actual condition loading Electric vehicle hydraulic buffer reliability test.
Technical background
With the fast development of electric vehicle at home, electric vehicle hydraulic buffer is using very extensive.Electric vehicle hydraulic pressure subtracts One of the device that shakes critical component important as electric vehicle, quality directly affects the comfortableness and security of electric vehicle.Expert learns Person has carried out a large amount of research from model foundation, theory analysis, dynamic analysis, structural analysis etc. respectively, achieves weight The achievement in research wanted.However, it is extremely rare at home for the reliability test of electric vehicle hydraulic buffer critical component, It is generally only the reliability test for carrying out electric vehicle user scene, this experiment can only be according to the regular return visit of enterprise marketing personnel Or affiliated maintenance department of enterprise obtains fault data, the test data that this method obtains is by user, sales force, maintenance personal Etc. human factors be affected, and inaccurate, environment is unknown uncontrollable, and therefore, exploitation one kind can simulate actual condition and add The electric vehicle hydraulic buffer reliability test of load, the reliability of electric vehicle hydraulic buffer is obtained by reliability test Test data provides basic basis for reliability improved design and is of great significance.
Invention content
The technical problems to be solved by the invention are to overcome current reliability test not subtracting electric vehicle hydraulic pressure The problem of device carries out reliability test is shaken, provides a kind of electric vehicle hydraulic buffer reliability examination for simulating actual condition loading Experiment device.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization, it is described with reference to the drawings as follows:
A kind of electric vehicle hydraulic buffer reliability test for simulating actual condition loading, the experimental rig include vertical add Part, horizontal addload part, counterweight loading section, hydraulic part, humiture loading section are carried, the Vertical loading part is hung down Straight hydraulic cylinder(2)Axis, No. 1 pull pressure sensor(4)Axis, vertical force application rod(26)Axis, vertical support frame (29)Symmetrical center line it is conllinear, and perpendicular to ground black iron(1)Upper surface;The horizontal hydraulic cylinder of the horizontal addload part (17)Axis, No. 2 pull pressure sensor(16)Axis, straight optical axis(15)Axis collinear, and be parallel to ground black iron(1) Upper surface;The front fork(7)Symmetrical center line, force rod(9)Axis, counterweight platform(37)Symmetrical center line it is conllinear.
Vertical loading part described in technical solution includes vertical hydraulic cylinder(2), Vertical loading supporting rack(3), No. 1 tension and compression Force snesor(4), vertical force application rod(26), No. 2 displacement sensors(27), displacement sensor retainer ring(28), vertical support frame (29), vertical support rod(30), No. 2 linear bearings(33), jackscrew(34), locking nut(39);
The Vertical loading supporting rack(3)It is bolted on ground black iron(1)On;
The Vertical loading supporting rack(3)Top plate on offer through-hole, for install No. 2 linear bearings(33), the two was Cooperation of being full of is installed;The vertical force application rod(26)Axis and No. 2 linear bearings(33)Brearing bore clearance fit installation;It is described No. 1 pull pressure sensor(4)Upper end and vertical force application rod(26)Lower thread be fixedly connected;The vertical hydraulic cylinder(2) Projecting shaft and No. 1 pull pressure sensor(4)Lower end connected firmly by screw thread;The vertical hydraulic cylinder(2)With ground black iron(1)It is logical Bolt is crossed to be fixedly connected;The vertical support frame(29)For y-type structure part, in vertical support frame(29)Jackshaft lower surface open Equipped with for screwing in vertical force application rod(26)The threaded hole of the thread segment of upper end;In the vertical support frame(29)Y types upper end Through-hole is offered, opens up that there are one for screwing in jackscrew on the through-hole wall(34)Threaded hole;The vertical support rod(30) Across vertical support frame(29)The through-hole of upper end, and be interference fit installation;The jackscrew(34)Screw in vertical support frame(29) Threaded hole in, and hold out against vertical support rod(30), make vertical support rod(30)It is fixed on vertical support frame(29)On;It is described to hang down Support bars(30)Both ends and hydraulic damper(6)The through-hole cooperation installation of lower end, and use locking nut(39)It is fixed;
Institute's displacement sensors retainer ring(28)Left end through-hole be sleeved on vertical force application rod(26)The thread segment of upper end is applied when vertically Power bar(26)The thread segment of upper end screws in vertical support frame(29)During the threaded hole of jackshaft, while displacement sensor retainer ring (28)It is fixed on vertical force application rod(26)On;Institute's displacement sensors retainer ring(28)With No. 2 displacement sensors(27)Projecting shaft It is fixed by threaded connection;No. 2 displacement sensors(27)Housing be mounted by means of bolts on Vertical loading supporting rack (3)Top plate upper surface.No. 2 displacement sensors(27)Axis and vertical force application rod(26)Axis it is parallel;
No. 2 displacement sensors(27), No. 1 pull pressure sensor(4)Respectively with console(43)Electrical connection.
Horizontal addload part described in technical solution includes rectangular retainer(8), No. 1 adjusting knob(11), No. 1 displacement pass Sensor(12), bearing block support plate(13), bearing block(14), straight optical axis(15), No. 2 pull pressure sensor(16), horizontal liquid Cylinder pressure(17), horizontal hydraulic cylinder support plate(18), No. 1 supporting rack(19), No. 2 supporting racks(20), No. 2 adjusting knobs(21), water Flat loading supporting rack(23), adjustment frame(24), No. 1 linear bearing(31), displacement sensor hold-down support(32), No. 1 locking screw Bolt(35), No. 2 clamping screws(36);
The horizontal hydraulic cylinder(17)It is bolted on horizontal hydraulic cylinder support plate(18)Cover top surface;The level Hydraulic cylinder(17)Projecting shaft and No. 2 pull pressure sensor(16)Right end connected firmly by screw thread;No. 2 pull pressure sensor (16)Left end and straight optical axis(15)Right end be fixed by threaded connection;The straight optical axis(15)With No. 1 linear bearing (31)Endoporus clearance fit installation, the straight optical axis(15)It can be along linear bearing(31)Endoporus slide;The linear axis It holds(31)Outer ring and bearing block(14)Endoporus interference fit installation;The bearing block(14)It is bolted on bearing block Support plate(13)Cover top surface;The straight optical axis(15)Left end pass through experimental bench outer cover(10)Right plate it is U-shaped Slot, with rectangular retainer(8)The threaded hole of right plate be fixedly connected;
The adjustment frame(24)Horizontal axis a, horizontal axis b both ends thread segment be inserted into rectangular retainer(8)Front side board and back side panel Arc strip hole in, and with 2 No. 1 adjusting knobs(11), 2 No. 2 adjusting knobs(21)Adjustment frame(24)The side of being fixed on Shape retainer(8)On;
The horizontal hydraulic cylinder support plate(18)It is welded by two vertical axises, top plate;The horizontal hydraulic cylinder support plate (18)Two vertical axises be uniformly provided with the axis through-hole parallel with cover top surface in the axial direction;No. 2 supporting racks (20)It is welded by two vertical axises, bottom plate;No. 2 supporting racks(20)Two vertical axises offer under axis and bottom plate The vertical through-hole in surface, and open up on the hole wall that there are one threaded holes;The horizontal hydraulic cylinder support plate(18)Two hang down D-axis is inserted into No. 2 supporting racks(20)Vertical axis through-hole in, pass through No. 1 clamping screw(35)Horizontal hydraulic cylinder support plate (18)With No. 2 supporting racks(20)It is fixedly connected;No. 2 supporting racks(20)Bottom plate horizontal addload is fixed on by T-bolt Supporting rack(23)Upper surface;The horizontal addload supporting rack(23)Lower end is fixed on ground black iron by T-bolt(1)On;
The bearing block support plate(13)It is welded by two vertical axises, top plate;The bearing block support plate(13)Two Vertical axis is uniformly provided with the axis through-hole parallel with cover top surface in the axial direction;No. 1 supporting rack(19)By two Vertical axis, bottom plate are welded;No. 1 supporting rack(19)Two vertical axises to offer axis vertical with bottom plate lower surface Through-hole;The bearing block support plate(13)Two vertical axises be inserted into No. 1 supporting rack(19)Vertical axis through-hole in, and pass through No. 2 clamping screws(36)Bearing block support plate(13)With No. 1 supporting rack(19)It is fixedly connected;No. 1 supporting rack(19)'s Bottom plate is fixed on horizontal addload supporting rack by T-bolt(23)Upper surface;
No. 1 displacement sensor(12)Housing pass through displacement sensor hold-down support(32)It is fixed on bearing block support plate (13)Cover top surface.No. 1 displacement sensor(12)Inner shaft left end and L-type link(53)One end pass through bolt It is affixed;The L-type link(53)The other end be fixed by screws in straight optical axis(On 15).No. 1 displacement sensor (12)Inner shaft axis and straight optical axis(15)Axis it is parallel.
The motor(17), No. 1 displacement sensor(12), No. 2 pull pressure sensor(16)Respectively with console(43)Electricity Connection.
Counterweight loading section described in technical solution includes force rod(9), counterweight platform(37), clump weight(38), acceleration Sensor(25);The force rod(9)With adjustment frame(24)Vertical pivot via clearance cooperation;The force rod(9)Lower end With front fork(7)It connects firmly;The force rod(9)Upper end and counterweight platform(37)It is connected firmly by screw thread, the counterweight platform(37)It is upper Surface offers T-slot;The clump weight(38)For cuboid part, and it is bolted on counterweight platform(37)Upper table Face;The acceleration transducer(25)It is bolted on counterweight platform(37)Lower surface, the acceleration transducer(25) With console(39)Electrical connection;The acceleration transducer(25)Detect hydraulic damper(6)Acceleration signal.
Hydraulic part described in technical solution includes No. 1 servo valve(44), No. 2 servo valves(45), accumulator(46), pressure Table(47), check valve(48), hydraulic pump motor(49), hydraulic pump(50), oil filter(51), overflow valve(52), vertical hydraulic cylinder (2), horizontal hydraulic cylinder(17);
The vertical hydraulic cylinder(2)A mouths and No. 2 servo valves(45)A mouths connection, the vertical hydraulic cylinder(2)B mouths and 2 Number servo valve(45)B mouths connection;No. 2 servo valves(45)P mouths and check valve(48)A mouths connection, No. 2 servos Valve(45)T mouths couple with fuel tank;
The horizontal hydraulic cylinder(17)A mouths and No. 1 servo valve(44)A mouths connection, the horizontal hydraulic cylinder(17)B mouths with No. 1 servo valve(44)B mouths connection;No. 1 servo valve(44)P mouths and check valve(48)A mouths connection, described No. 1 is watched Take valve(44)T mouths couple with fuel tank;The accumulator(46)A mouths and check valve(48)A mouths connection;The pressure gauge (47)A mouths and check valve(48)A mouths connection;The check valve(48)B mouths and hydraulic pump(50)B mouths connection;It is described Overflow valve(52)A mouths and hydraulic pump(50)B mouths connection;The overflow valve(52)B mouths couple with fuel tank;The hydraulic pump (50)A mouths and oil filter(51)Connection;The hydraulic pump motor(49)Motor shaft and hydraulic pump(50)Axis pass through shaft coupling Device couples;
The hydraulic pump motor(49), No. 1 servo valve(44), No. 2 servo valves(45), pressure gauge(47), overflow valve(52)Respectively With console(43)Electrical connection.
Humiture loading device described in technical solution includes temperature and humidity controller(40), No. 1 circulation pipe(41), No. 2 follow Endless tube(42), testing stand hermatic door(5), testing stand outer cover(10);
The testing stand outer cover(10)It is made of top plate, left plate, right plate, back side panel, and material is transparent material;The examination Test platform outer cover(10)It is bolted on Vertical loading supporting rack(3)Cover top surface on;The testing stand hermatic door(5) Pass through hinge and experimental bench outer cover(10)Connection, the testing stand hermatic door(5)Material is transparent material;
No. 2 circulation pipes(42)Upper end and experimental bench outer cover(10)Top is connected;No. 2 circulation pipes(42)Lower end and humiture Controller(40)Upper end be connected;No. 1 circulation pipe(41)Upper end and experimental bench outer cover(10)Lower part is connected;It is described No. 1 circulation pipe(41)Lower end and temperature and humidity controller(40)Lower end be connected;The temperature and humidity controller(40), No. 1 follow Endless tube(41), No. 2 circulation pipes(42), testing stand outer cover(10)It forms closed test environment and adjusts channel;
The temperature and humidity controller(40)With console(43)Electrical connection.
Vertical loading supporting rack described in technical solution(3)It is welded by top plate, left plate, right plate.
Adjustment frame described in technical solution(24)The structural member being made of horizontal axis a, horizontal axis b and vertical pivot is opened up among vertical pivot There is through-hole c, the axis of through-hole c is vertical with the axis of horizontal axis a, horizontal axis b, and horizontal axis a is parallel with the axis of horizontal axis b.
Rectangular retainer described in technical solution(8)It is welded by top plate, bottom plate, right plate, front side board, back side panel Structural member, the rectangular retainer(8)Front side board and back side panel respectively open up that there are two arc strip holes;The rectangular retainer (8)Top plate, bottom plate offer U-type groove;The rectangular retainer(8)Right plate among offer threaded hole.
Compared with prior art the beneficial effects of the invention are as follows:
1. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention uses vertical liquid Cylinder pressure, vertical force application rod, horizontal hydraulic cylinder and straight optical axis carry out simulation actual condition to tested electric vehicle hydraulic buffer and add The reliability test of load, and real-time failure data acquisition is carried out, for the Reliability modeling in later stage, reliability growth, reliability Curve guide impeller and reliability prediction provide practical true basic fault data, substantially reduce data acquisition time.
2. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention is using temperature Humidity controller realizes the simulation loading of experimental enviroment with circulating line.During experiment, humiture loading device can be according to reality Border operating mode adjusts experimental enviroment humiture, while can store test parameters, so as to subsequent inquiry and analysis.
3. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention is using rotation The mode that tight adjusting knob makes adjustment frame be fixed on rectangular retainer controls the inclination angle of electric vehicle hydraulic damper and horizontal plane Degree simulates the angle of inclination of electric vehicle hydraulic buffer in real work, makes reliability test closer to real working condition.
Match 4. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention uses Pouring weight loading simulation electric vehicle is conducted oneself with dignity and loading capacity makes reliability test result closer to real working condition.
5. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention adapts to model Enclose that comparison is wide, the hydraulic buffer that can be directed to different model be tested, and experimental enviroment humiture is controllable, only need to adjust hydraulic pressure The electric vehicle hydraulic buffer progress that the angle of inclination of damper and vertical, horizontal addload part can carry out to various models can It is tested by property, embodies the flexibility and versatility of this pilot system.
6. the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention passes through drawing Pressure sensor, displacement sensor monitor experiment process in real time, real time monitoring and closed-loop control and feedback are realized, to improve mould Intend the precision of actual condition loading.The dynamic force parameter of loading is included on the display interface of console simultaneously.
Description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is the electric vehicle hydraulic buffer reliability test structure composition of simulation actual condition loading of the present invention Whole perspective view;
Fig. 2 is horizontal in the electric vehicle hydraulic buffer reliability test that simulation actual condition of the present invention loads adds Carry the perspective view of part;
Fig. 3 is that counterweight adds in the electric vehicle hydraulic buffer reliability test that simulation actual condition of the present invention loads Fill partial, diagrammatic view;
Fig. 4 is vertically to add in the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention Carry the partial view of part;
Fig. 5 is adjustment frame in the electric vehicle hydraulic buffer reliability test that simulation actual condition of the present invention loads Sectional view;
Fig. 6 is hydraulic pressure system in the electric vehicle hydraulic buffer reliability test that simulation actual condition of the present invention loads System principle sketch.
In figure:1. ground black iron, 2. vertical hydraulic cylinders, 3. Vertical loading supporting racks, No. 4.1 pull pressure sensor, 5. experiments Platform hermatic door, 6. hydraulic damper, 7. front forks, 8. rectangular retainers, 9. force rods, No. 11.1 adjusting knobs, No. 12.1 positions Displacement sensor, 13. bearing block support plates, 14. bearing blocks, 15. straight optical axis, No. 16.2 pull pressure sensor, 17. horizontal hydraulic pressures Cylinder, 18. horizontal hydraulic cylinder support plates, No. 19.1 supporting racks, No. 20.2 supporting racks, No. 21.2 adjusting knobs, 23. horizontal addload branch Support, 24. adjustment frames, 25. acceleration transducers, 26. vertical force application rods, No. 27.2 displacement sensors, 28. displacement sensors are consolidated Determine 29. vertical support framves of ring, 30. vertical support rods, No. 31.1 linear bearings, 32. displacement sensor hold-down supports, No. 33.2 Linear bearing, 34. jackscrews, No. 35.1 clamping screws, 36. No. 2 clamping screws, 37. counterweight platforms, 38. clump weights, 39. locking screws Mother, 40. temperature and humidity controllers, No. 41.1 circulation pipes, No. 42.2 circulation pipes, 43. consoles, No. 44.1 servo valves, No. 45.2 are watched Take valve, 46. accumulators, 47. pressure gauges, 48. check valves, 49. hydraulic pump motors, 50. hydraulic pumps, 51. oil filters, 52. overflows Valve, 53.L type links.
Specific embodiment
The present invention is explained in detail below in conjunction with the accompanying drawings:
It will be appreciated that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this Embodiment in invention, all other reality that those of ordinary skill in the art are obtained without creative efforts Example is applied, shall fall within the protection scope of the present invention:
Refering to Fig. 1, the electric vehicle hydraulic buffer reliability test of simulation actual condition loading of the present invention includes Vertical loading part, horizontal addload part, counterweight loading section, hydraulic part, humiture loading section.The Vertical loading portion Point the axis of vertical hydraulic cylinder 2, the axis of No. 1 pull pressure sensor 4, vertical force application rod 26 axis, vertical support frame 29 Symmetrical center line it is conllinear, and perpendicular to the upper surface of ground black iron 1.The axis of the horizontal hydraulic cylinder 17 of the horizontal addload part Line, the axis of No. 2 pull pressure sensor 16, straight optical axis 15 axis collinear, and be parallel to the upper surface of ground black iron 1.It is described 7 symmetrical center line of front fork, the axis of force rod 9, the symmetrical center line of counterweight platform 37 are conllinear.
First, Vertical loading part
Refering to Fig. 1, Fig. 4, the Vertical loading part includes 3, No. 1 vertical hydraulic cylinder 2, Vertical loading supporting rack pressure sensings Device 4, vertical force application rod 26, No. 2 displacement sensors 27, displacement sensor retainer ring 28, vertical support frame 29, vertical support rods 30th, No. 2 linear bearings 33, jackscrew 34, locking nut 39.
Refering to Fig. 1, Fig. 4, the Vertical loading supporting rack 3 is welded by top plate, left plate, right plate;It is described vertical Loading supporting rack 3 is bolted on ground black iron 1;
Refering to Fig. 1, Fig. 4, through-hole is offered on the top plate of the Vertical loading supporting rack 3, for installing No. 2 linear bearings 33, The two is installed for interference fit;The brearing bore clearance fit of the axis of the vertical force application rod 26 and No. 2 linear bearings 33 is installed, Vertical force application rod 26 is slided in the brearing bore of No. 2 linear bearings 33;It is applied with vertical the upper end of No. 1 pull pressure sensor 4 The lower end of power bar 26 is fixed by threaded connection;The projecting shaft of the vertical hydraulic cylinder 2 and the lower end of No. 1 pull pressure sensor 4 It is connected firmly by screw thread;The vertical hydraulic cylinder 2 is bolted with ground black iron 1 to be coupled.The vertical support frame 29 is Y type knots Component, offered in the jackshaft lower surface of vertical support frame 29 for screw in vertical 26 upper end of force application rod thread segment screw thread Hole;Through-hole is offered in the Y types upper end of the vertical support frame 29, opens up that there are one for screwing in jackscrew 34 on the through-hole wall Threaded hole.The vertical support rod 30 passes through the through-hole of 29 upper end of vertical support frame, and is interference fit installation;The jackscrew 34 screw in the threaded hole of vertical support frame 29, and hold out against vertical support rod 30, and vertical support rod 30 is made to be fixed on vertical support On frame 29.The both ends of the vertical support rod 30 and the through-hole cooperation of 6 lower end of hydraulic damper are installed, and solid with locking nut 39 It is fixed.
Refering to Fig. 1, Fig. 4, the left end through-hole of institute's displacement sensors retainer ring 28 is sleeved on the spiral shell of vertical 26 upper end of force application rod Line section when the thread segment of vertical 26 upper end of force application rod screws in the threaded hole of 29 jackshaft of vertical support frame, while passes displacement Sensor retainer ring 28 is fixed on vertical force application rod 26;Institute's displacement sensors retainer ring 28 is stretched out with No. 2 displacement sensors 27 Axis is fixed by threaded connection;The housing of No. 2 displacement sensors 27 is mounted by means of bolts on Vertical loading supporting rack 3 Top plate upper surface.The axis of No. 2 displacement sensors 27 is parallel with the axis of vertical force application rod 26.No. 2 displacements 27, No. 1 pull pressure sensor 4 of sensor are electrically connected respectively with console 43.
2nd, horizontal addload part
Refering to Fig. 1, Fig. 2, Fig. 3, the horizontal addload part includes the rectangular adjusting knob 11,1 of retainer 8,1 displacement sensing Device 12, bearing block support plate 13, bearing block 14, straight optical axis 15, No. 2 pull pressure sensor 16, horizontal hydraulic cylinder 17, horizontal liquid 20, No. 2 adjusting knobs 21 of the supporting rack of supporting rack 19,2 of cylinder pressure support plate 18,1, horizontal addload supporting rack 23, adjustment frame 24, No. 1 linear bearing 31, the clamping screw 36 of clamping screw 35,2 of displacement sensor hold-down support 32,1.
Refering to Fig. 1, Fig. 2, the horizontal hydraulic cylinder 17 is bolted on the top plate of horizontal hydraulic cylinder support plate 18 Surface.The projecting shaft and the right end of No. 2 pull pressure sensor 16 of the horizontal hydraulic cylinder 17 are connected firmly by screw thread;No. 2 drawings The left end of pressure sensor 16 and the right end of straight optical axis 15 are fixed by threaded connection;The straight optical axis 15 and No. 1 straight line The endoporus clearance fit installation of bearing 31, the straight optical axis 15 can be slided along the endoporus of linear bearing 31;The linear bearing 31 outer ring and the endoporus interference fit of bearing block 14 are installed;The bearing block 14 is bolted on bearing block support plate 13 Cover top surface.The structural member that the rectangular retainer 8 is welded by top plate, bottom plate, right plate, front side board, back side panel, The front side board of the rectangular retainer 8 respectively opens up that there are two arc strip holes with back side panel;The top plate of the rectangular retainer 8, Bottom plate offers U-type groove;Threaded hole is offered among the right plate of the rectangular retainer 8.The left end of the straight optical axis 15 Across the U-type groove of the right plate of experimental bench outer cover 10, it is fixedly connected with the threaded hole of the right plate of rectangular retainer 8;
Refering to Fig. 3, Fig. 5, structural member that the adjustment frame 24 is made of horizontal axis a, horizontal axis b and vertical pivot is offered among vertical pivot logical The axis of hole c, through-hole c are vertical with the axis of horizontal axis a, horizontal axis b, and horizontal axis a is parallel with the axis of horizontal axis b;During installation, the tune The horizontal axis a of whole frame 24, the thread segment at horizontal axis b both ends are inserted into the front side board of rectangular retainer 8 and the arc strip hole of back side panel In, and adjustment frame 24 is fixed on rectangular retainer 8 with 2 No. 1 adjusting knobs, 11,2 No. 2 adjusting knobs 21.Before experiment, First unclamp 2 No. 1 adjusting knobs, 11,2 No. 2 adjusting knobs 21 and locking nut 39.Further according to actual use operating mode, liquid is adjusted Press the angle of inclination of damper 6 and horizontal plane;After adjusting, then screw 2 No. 1 adjusting knobs, 11,2 No. 2 adjusting knobs 21 Adjustment frame 24 is made to be fixed on rectangular retainer 8, screwing locking nut 39 fixes hydraulic damper 6 and vertical support rod 30.
Refering to Fig. 1, the horizontal hydraulic cylinder support plate 18 is welded by two vertical axises, top plate;The horizontal hydraulic pressure The two vertical axises of cylinder support plate 18 are uniformly provided with the axis through-hole parallel with cover top surface in the axial direction.Described No. 2 Supporting rack 20 is welded by two vertical axises, bottom plate;The two vertical axises of No. 2 supporting racks 20 offer axis and bottom plate The vertical through-hole in lower surface, and open up on the hole wall that there are one threaded holes.Before experiment, according to test requirements document, the horizontal liquid The two vertical axises of cylinder pressure support plate 18 are inserted into the through-hole of the vertical axis of No. 2 supporting racks 20, after adjusting height, pass through No. 1 Clamping screw 35 is fixedly connected horizontal hydraulic cylinder support plate 18 and No. 2 supporting racks 20;The bottom plate of No. 2 supporting racks 20 passes through T-bolt is fixed on the upper surface of horizontal addload supporting rack 23.23 lower end of horizontal addload supporting rack is fixed by T-bolt On ground black iron 1.
Refering to Fig. 1, Fig. 2, the bearing block support plate 13 is welded by two vertical axises, top plate.The bearing block branch The two vertical axises of fagging 13 are uniformly provided with the axis through-hole parallel with cover top surface in the axial direction.No. 1 support Frame 19 is welded by two vertical axises, bottom plate;The two vertical axises of No. 1 supporting rack 19 offer axis and bottom plate following table The vertical through-hole in face;The two vertical axises of the bearing block support plate 13 are inserted into the through-hole of the vertical axis of No. 1 supporting rack 19, and Bearing block support plate 13 and No. 1 supporting rack 19 are fixedly connected by No. 2 clamping screws 36;The bottom plate of No. 1 supporting rack 19 The upper surface of horizontal addload supporting rack 23 is fixed on by T-bolt.
Refering to Fig. 1, Fig. 2, the housing of No. 1 displacement sensor 12 is fixed on axis by displacement sensor hold-down support 32 The cover top surface of bearing support plate 13.The inner shaft left end of No. 1 displacement sensor 12 and one end of L-type link 53 pass through Bolt is affixed;The other end of the L-type link 53 is fixed by screws on straight optical axis 15.No. 1 displacement sensor 12 inner shaft axis is parallel with the axis of straight optical axis 15.The displacement sensor 12,2 of motor 17,1 pull pressure sensor 16 are electrically connected with console 43.
3rd, counterweight loading section
Refering to Fig. 1, Fig. 3, Fig. 5, the counterweight loading section includes force rod 9, counterweight platform 37, clump weight 38, acceleration sensing Device 25;The via clearance of the force rod 9 and the vertical pivot of adjustment frame 24 coordinates;The lower end of the force rod 9 is connected firmly with front fork 7; The upper end of the force rod 9 is connected firmly with counterweight platform 37 by screw thread, and the upper surface of the counterweight platform 37 offers T-slot;It is described Clump weight 38 is cuboid part, and is bolted on the upper surface of counterweight platform 37;During experiment, according to electric vehicle weight and Electric vehicle-mounted weight can install multiple clump weights 38.The acceleration transducer 25 is bolted on the following table of counterweight platform 37 Face, the acceleration transducer 25 are electrically connected with console 39;The acceleration transducer 25 detects the acceleration of hydraulic damper 6 Spend signal.
4th, hydraulic part
Refering to Fig. 1, Fig. 6, the hydraulic part includes 44, No. 2 servo valves 45 of No. 1 servo valve, accumulator 46, pressure gauge 47, list To valve 48, hydraulic pump motor 49, hydraulic pump 50, oil filter 51, overflow valve 52, vertical hydraulic cylinder 2, horizontal hydraulic cylinder 17.
Refering to Fig. 6, the A mouths of the vertical hydraulic cylinder 2 couple with the A mouths of No. 2 servo valves 45, the B of the vertical hydraulic cylinder 2 Mouth couples with the B mouths of No. 2 servo valves 45;The P mouths of No. 2 servo valves 45 couple with the A mouths of check valve 48, No. 2 servos The T mouths of valve 45 couple with fuel tank;
Refering to Fig. 6, the A mouths of the horizontal hydraulic cylinder 17 couple with the A mouths of No. 1 servo valve 44, the B mouths of the horizontal hydraulic cylinder 17 Couple with the B mouths of No. 1 servo valve 44;The P mouths of No. 1 servo valve 44 couple with the A mouths of check valve 48, No. 1 servo valve 44 T mouths couple with fuel tank;The A mouths of the accumulator 46 couple with the A mouths of check valve 48;The A mouths of the pressure gauge 47 and list Couple to the A mouths of valve 48;The B mouths of the check valve 48 couple with the B mouths of hydraulic pump 50;The A mouths and hydraulic pressure of the overflow valve 52 The B mouths connection of pump 50;The B mouths of the overflow valve 52 couple with fuel tank;The A mouths of the hydraulic pump 50 couple with oil filter 51.Institute The motor shaft for stating hydraulic pump motor 49 is coupled with the axis of hydraulic pump 50 by shaft coupling.
Refering to Fig. 1, Fig. 6, the servo valve 44,2 of hydraulic pump motor 49,1 servo valve 45, pressure gauge 47, the overflow valve 52 are electrically connected respectively with console 43.
5th, humiture loading device
Refering to Fig. 1, the humiture loading device includes the circulation pipe 41,2 of temperature and humidity controller 40,1 circulation pipe 42, experiment Platform hermatic door 5, testing stand outer cover 10.
Refering to Fig. 1, the testing stand outer cover 10 is made of top plate, left plate, right plate, back side panel, and material is transparent Material.The testing stand outer cover 10 is bolted in the cover top surface of Vertical loading supporting rack 3.The testing stand is close Closure door 5 is coupled by hinge with experimental bench outer cover 10, and 5 material of testing stand hermatic door is transparent material, convenient for observation.Experiment When, testing stand hermatic door 5 is closed, and the top plate of testing stand hermatic door 5 and testing stand outer cover 10, Vertical loading supporting rack 3, which is formed, to be sealed Close space.
Refering to Fig. 1,42 upper end of No. 2 circulation pipes is connected with 10 top of experimental bench outer cover;No. 2 42 lower ends of circulation pipe with The upper end of temperature and humidity controller 40 is connected;The upper end and 10 lower part of experimental bench outer cover of No. 1 circulation pipe 41 are connected;It is described The lower end of No. 1 circulation pipe 41 and the lower end of temperature and humidity controller 40 are connected.During experiment, the temperature and humidity controller 40,1 follows 41, No. 2 circulation pipes 42 of endless tube, testing stand outer cover 10 form closed test environment and adjust channel.The temperature and humidity controller 40 with Console 43 is electrically connected.
The operation principle of the electric vehicle hydraulic buffer reliability test of the simulation actual condition loading:
Refering to Fig. 1, the loading schematic diagram to hydraulic damper 6 is given in figure, Vertical loading part is installed first, is ensured vertical In the axis of hydraulic cylinder 2, the axis of No. 1 pull pressure sensor 4, the axis of vertical force application rod 26, the symmetrical of vertical support frame 29 Heart line is conllinear, and perpendicular to the upper surface of ground black iron 1;Secondly, installation horizontal addload part ensures the axis of horizontal hydraulic cylinder 17 Line, the axis of No. 2 pull pressure sensor 16, the axis of straight optical axis 15, rectangular retainer 8 centerline collineation, and be parallel to The upper surface of ground black iron 1;Hydraulic damper 6, front fork 7 are installed again, adjust the experiment angle of inclination of hydraulic damper 6;It installs again Counterweight loading section installs clump weight 38 according to electric vehicle dead weight and loading capacity;Humiture loading device is installed again.Before experiment, The correlations such as loading force size and counterweight are set according to operation interface of the loading spectrum of the practical driving conditions of electric vehicle in console 43 Test parameters starts to test.In experiment, various sensors in testing stand acquisition corresponding signal, and be sent in time processor into Row signal processing, and timely feedback to corresponding executive component, closed-loop control is formed, and record corresponding test data.After experiment, Shutoff operation program is simultaneously cut off the power.

Claims (9)

1. a kind of electric vehicle hydraulic buffer reliability test for simulating actual condition loading, the experimental rig include vertical Loading section, horizontal addload part, counterweight loading section, hydraulic part, humiture loading section, which is characterized in that described to hang down The vertical hydraulic cylinder of straight loading section(2)Axis, No. 1 pull pressure sensor(4)Axis, vertical force application rod(26)Axis Line, vertical support frame(29)Symmetrical center line it is conllinear, and perpendicular to ground black iron(1)Upper surface;The horizontal addload part Horizontal hydraulic cylinder(17)Axis, No. 2 pull pressure sensor(16)Axis, straight optical axis(15)Axis collinear, it is and flat Row is in ground black iron(1)Upper surface;The front fork(7)Symmetrical center line, force rod(9)Axis, counterweight platform(37)It is symmetrical Center line is conllinear.
2. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 1 It puts, which is characterized in that the Vertical loading part includes vertical hydraulic cylinder(2), Vertical loading supporting rack(3), No. 1 pressure pass Sensor(4), vertical force application rod(26), No. 2 displacement sensors(27), displacement sensor retainer ring(28), vertical support frame(29)、 Vertical support rod(30), No. 2 linear bearings(33), jackscrew(34), locking nut(39);
The Vertical loading supporting rack(3)It is bolted on ground black iron(1)On;
The Vertical loading supporting rack(3)Top plate on offer through-hole, for install No. 2 linear bearings(33), the two was Cooperation of being full of is installed;The vertical force application rod(26)Axis and No. 2 linear bearings(33)Brearing bore clearance fit installation;It is described No. 1 pull pressure sensor(4)Upper end and vertical force application rod(26)Lower thread be fixedly connected;The vertical hydraulic cylinder(2) Projecting shaft and No. 1 pull pressure sensor(4)Lower end connected firmly by screw thread;The vertical hydraulic cylinder(2)With ground black iron(1)It is logical Bolt is crossed to be fixedly connected;The vertical support frame(29)For y-type structure part, in vertical support frame(29)Jackshaft lower surface open Equipped with for screwing in vertical force application rod(26)The threaded hole of the thread segment of upper end;In the vertical support frame(29)Y types upper end Through-hole is offered, opens up that there are one for screwing in jackscrew on the through-hole wall(34)Threaded hole;The vertical support rod(30) Across vertical support frame(29)The through-hole of upper end, and be interference fit installation;The jackscrew(34)Screw in vertical support frame(29) Threaded hole in, and hold out against vertical support rod(30), make vertical support rod(30)It is fixed on vertical support frame(29)On;It is described to hang down Support bars(30)Both ends and hydraulic damper(6)The through-hole cooperation installation of lower end, and use locking nut(39)It is fixed;
Institute's displacement sensors retainer ring(28)Left end through-hole be sleeved on vertical force application rod(26)The thread segment of upper end is applied when vertically Power bar(26)The thread segment of upper end screws in vertical support frame(29)During the threaded hole of jackshaft, while displacement sensor retainer ring (28)It is fixed on vertical force application rod(26)On;Institute's displacement sensors retainer ring(28)With No. 2 displacement sensors(27)Projecting shaft It is fixed by threaded connection;No. 2 displacement sensors(27)Housing be mounted by means of bolts on Vertical loading supporting rack (3)Top plate upper surface;No. 2 displacement sensors(27)Axis and vertical force application rod(26)Axis it is parallel;
No. 2 displacement sensors(27), No. 1 pull pressure sensor(4)Respectively with console(43)Electrical connection.
3. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 1 It puts, which is characterized in that the horizontal addload part includes rectangular retainer(8), No. 1 adjusting knob(11), No. 1 displacement sensor (12), bearing block support plate(13), bearing block(14), straight optical axis(15), No. 2 pull pressure sensor(16), horizontal hydraulic cylinder (17), horizontal hydraulic cylinder support plate(18), No. 1 supporting rack(19), No. 2 supporting racks(20), No. 2 adjusting knobs(21), it is horizontal plus Carry supporting rack(23), adjustment frame(24), No. 1 linear bearing(31), displacement sensor hold-down support(32), No. 1 clamping screw (35), No. 2 clamping screws(36);
The horizontal hydraulic cylinder(17)It is bolted on horizontal hydraulic cylinder support plate(18)Cover top surface;The level Hydraulic cylinder(17)Projecting shaft and No. 2 pull pressure sensor(16)Right end connected firmly by screw thread;No. 2 pull pressure sensor (16)Left end and straight optical axis(15)Right end be fixed by threaded connection;The straight optical axis(15)With No. 1 linear bearing (31)Endoporus clearance fit installation, the straight optical axis(15)It can be along linear bearing(31)Endoporus slide;The linear axis It holds(31)Outer ring and bearing block(14)Endoporus interference fit installation;The bearing block(14)It is bolted on bearing block Support plate(13)Cover top surface;The straight optical axis(15)Left end pass through experimental bench outer cover(10)Right plate it is U-shaped Slot, with rectangular retainer(8)The threaded hole of right plate be fixedly connected;
The adjustment frame(24)Horizontal axis a, horizontal axis b both ends thread segment be inserted into rectangular retainer(8)Front side board and back side panel Arc strip hole in, and with 2 No. 1 adjusting knobs(11), 2 No. 2 adjusting knobs(21)Adjustment frame(24)The side of being fixed on Shape retainer(8)On;
The horizontal hydraulic cylinder support plate(18)It is welded by two vertical axises, top plate;The horizontal hydraulic cylinder support plate (18)Two vertical axises be uniformly provided with the axis through-hole parallel with cover top surface in the axial direction;No. 2 supporting racks (20)It is welded by two vertical axises, bottom plate;No. 2 supporting racks(20)Two vertical axises offer under axis and bottom plate The vertical through-hole in surface, and open up on the hole wall that there are one threaded holes;The horizontal hydraulic cylinder support plate(18)Two hang down D-axis is inserted into No. 2 supporting racks(20)Vertical axis through-hole in, pass through No. 1 clamping screw(35)Horizontal hydraulic cylinder support plate (18)With No. 2 supporting racks(20)It is fixedly connected;No. 2 supporting racks(20)Bottom plate horizontal addload is fixed on by T-bolt Supporting rack(23)Upper surface;The horizontal addload supporting rack(23)Lower end is fixed on ground black iron by T-bolt(1)On;
The bearing block support plate(13)It is welded by two vertical axises, top plate;The bearing block support plate(13)Two Vertical axis is uniformly provided with the axis through-hole parallel with cover top surface in the axial direction;No. 1 supporting rack(19)By two Vertical axis, bottom plate are welded;No. 1 supporting rack(19)Two vertical axises to offer axis vertical with bottom plate lower surface Through-hole;The bearing block support plate(13)Two vertical axises be inserted into No. 1 supporting rack(19)Vertical axis through-hole in, and pass through No. 2 clamping screws(36)Bearing block support plate(13)With No. 1 supporting rack(19)It is fixedly connected;No. 1 supporting rack(19)'s Bottom plate is fixed on horizontal addload supporting rack by T-bolt(23)Upper surface;
No. 1 displacement sensor(12)Housing pass through displacement sensor hold-down support(32)It is fixed on bearing block support plate (13)Cover top surface;No. 1 displacement sensor(12)Inner shaft left end and L-type link(53)One end pass through bolt It is affixed;The L-type link(53)The other end be fixed by screws in straight optical axis(On 15);No. 1 displacement sensor (12)Inner shaft axis and straight optical axis(15)Axis it is parallel;
The motor(17), No. 1 displacement sensor(12), No. 2 pull pressure sensor(16)Respectively with console(43)Electrical connection.
4. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 1 It puts, which is characterized in that
The counterweight loading section includes force rod(9), counterweight platform(37), clump weight(38), acceleration transducer(25);It is described Force rod(9)With adjustment frame(24)Vertical pivot via clearance cooperation;The force rod(9)Lower end and front fork(7)It connects firmly;Institute State force rod(9)Upper end and counterweight platform(37)It is connected firmly by screw thread, the counterweight platform(37)Upper surface offer T-slot; The clump weight(38)For cuboid part, and it is bolted on counterweight platform(37)Upper surface;The acceleration sensing Device(25)It is bolted on counterweight platform(37)Lower surface, the acceleration transducer(25)With console(39)It is electrically connected It connects;The acceleration transducer(25)Detect hydraulic damper(6)Acceleration signal.
5. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 1 It puts, which is characterized in that the hydraulic part includes No. 1 servo valve(44), No. 2 servo valves(45), accumulator(46), pressure gauge (47), check valve(48), hydraulic pump motor(49), hydraulic pump(50), oil filter(51), overflow valve(52), vertical hydraulic cylinder (2), horizontal hydraulic cylinder(17);
The vertical hydraulic cylinder(2)A mouths and No. 2 servo valves(45)A mouths connection, the vertical hydraulic cylinder(2)B mouths and 2 Number servo valve(45)B mouths connection;No. 2 servo valves(45)P mouths and check valve(48)A mouths connection, No. 2 servos Valve(45)T mouths couple with fuel tank;
The horizontal hydraulic cylinder(17)A mouths and No. 1 servo valve(44)A mouths connection, the horizontal hydraulic cylinder(17)B mouths with No. 1 servo valve(44)B mouths connection;No. 1 servo valve(44)P mouths and check valve(48)A mouths connection, described No. 1 is watched Take valve(44)T mouths couple with fuel tank;The accumulator(46)A mouths and check valve(48)A mouths connection;The pressure gauge (47)A mouths and check valve(48)A mouths connection;The check valve(48)B mouths and hydraulic pump(50)B mouths connection;It is described Overflow valve(52)A mouths and hydraulic pump(50)B mouths connection;The overflow valve(52)B mouths couple with fuel tank;The hydraulic pump (50)A mouths and oil filter(51)Connection;The hydraulic pump motor(49)Motor shaft and hydraulic pump(50)Axis pass through shaft coupling Device couples;
The hydraulic pump motor(49), No. 1 servo valve(44), No. 2 servo valves(45), pressure gauge(47), overflow valve(52)Respectively With console(43)Electrical connection.
6. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 1 It puts, which is characterized in that
The humiture loading device includes temperature and humidity controller(40), No. 1 circulation pipe(41), No. 2 circulation pipes(42), testing stand Hermatic door(5), testing stand outer cover(10);
The testing stand outer cover(10)It is made of top plate, left plate, right plate, back side panel, and material is transparent material;The examination Test platform outer cover(10)It is bolted on Vertical loading supporting rack(3)Cover top surface on;The testing stand hermatic door(5) Pass through hinge and experimental bench outer cover(10)Connection, the testing stand hermatic door(5)Material is transparent material;
No. 2 circulation pipes(42)Upper end and experimental bench outer cover(10)Top is connected;No. 2 circulation pipes(42)Lower end and humiture Controller(40)Upper end be connected;No. 1 circulation pipe(41)Upper end and experimental bench outer cover(10)Lower part is connected;It is described No. 1 circulation pipe(41)Lower end and temperature and humidity controller(40)Lower end be connected;The temperature and humidity controller(40), No. 1 follow Endless tube(41), No. 2 circulation pipes(42), testing stand outer cover(10)It forms closed test environment and adjusts channel;
The temperature and humidity controller(40)With console(43)Electrical connection.
7. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 2 It puts, which is characterized in that
The Vertical loading supporting rack(3)It is welded by top plate, left plate, right plate.
8. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 3 It puts, which is characterized in that
The adjustment frame(24)The structural member being made of horizontal axis a, horizontal axis b and vertical pivot offers through-hole c among vertical pivot, through-hole c Axis it is vertical with the axis of horizontal axis a, horizontal axis b, horizontal axis a is parallel with the axis of horizontal axis b.
9. a kind of electric vehicle hydraulic buffer reliability test dress for simulating actual condition loading according to claim 3 It puts, which is characterized in that
The rectangular retainer(8)The structural member being welded by top plate, bottom plate, right plate, front side board, back side panel, the side Shape retainer(8)Front side board and back side panel respectively open up that there are two arc strip holes;The rectangular retainer(8)Top plate, bottom Plate offers U-type groove;The rectangular retainer(8)Right plate among offer threaded hole.
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