CN110274770A - A kind of Vehicular vibration environmental simulation excitation loading device with crawler belt operation - Google Patents
A kind of Vehicular vibration environmental simulation excitation loading device with crawler belt operation Download PDFInfo
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- CN110274770A CN110274770A CN201910507985.XA CN201910507985A CN110274770A CN 110274770 A CN110274770 A CN 110274770A CN 201910507985 A CN201910507985 A CN 201910507985A CN 110274770 A CN110274770 A CN 110274770A
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- 230000005284 excitation Effects 0.000 title claims abstract description 72
- 230000007613 environmental effect Effects 0.000 title claims abstract description 12
- 238000004088 simulation Methods 0.000 title claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000002411 adverse Effects 0.000 claims abstract description 6
- 238000002474 experimental method Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/03—Endless-tracks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- General Physics & Mathematics (AREA)
- Handcart (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of Vehicular vibration environmental simulations with crawler belt operation to motivate loading device, balance arm couples bogie wheel, and as mechanism rocker section, excitation wheel and bogie wheel are mounted in interlocking bar, sliding pair is formed with interlocking bar, while the guide rail of interlocking bar and horizontal direction also forms sliding pair；Mechanism is realized in movement vertically and horizontally.Compared with prior art, the invention passes through rocking bar double-slider mechanism, it ensure that in vibration-testing, bogie wheel center face excitation wheel center always, crawler belt is significantly reduced to the adverse effect in experimentation, simultaneously by deflector roll by being minimized of frictional force between excitation wheel and exciting pallet, overcome the interference of undesirable element present in test, realize the requirement with operation track vibration in endless-track vehicle vibration test, the structure can also simulate the complex environment in practical endless-track vehicle traveling to a high degree simultaneously, feature simple with structure, easy to operate.
Description
Technical field
The present invention relates to endless-track vehicle fields, more particularly, to a kind of Vehicular vibration environmental simulation with crawler belt operation
Motivate loading device.
Background technique
It is complicated in endless-track vehicle driving cycle situation, it is run over to optimize promotion endless-track vehicle in changeable complex environment
The performance of journey needs to carry out suspension experiment to endless-track vehicle, and by the detection of suspension performance, analyzing its durability can
By property, to advanced optimize its structure and parameter, the damping performance in caterpillar driving process is promoted.
Current endless-track vehicle experiment method mainly has road test and indoor two kinds of platform experiment: (1) road test is in vehicle driving
In the process, body oscillating is detected with instrument and suspension parts performance parameter is objectively evaluated, test real result, but need
Vehicle is in various road travelings, and human and material resources consumption is larger, and elapsed-time standards is long, by its conditionality, endless-track vehicle vibration in reality
It is often difficult to carry out in dynamic test, thus indoor platform experiment is the mainstream of current endless-track vehicle vibration test；(2) indoor rack
Experiment has full vehicle suspension bench test and single suspension platform experiment two ways, single suspension platform experiment
Do not have representativeness to the work of full vehicle suspension.Full vehicle suspension bench test is that vehicle is placed on experimental bench,
There is a vibration excitor below each wheel, according to road traveling situation, exciting is carried out to each wheel, reproduces road test state.This
Kind of test method can simulated roadway driving cycle indoors, do not limited, can also be rejected during test pair by weather condition
Body oscillating, suspension durability and the more secondary factor of reliability effect greatly shorten the time with powerful method and go through
Journey.
The full vehicle suspension bench test of endless-track vehicle at present, which generallys use, sloughs crawler belt, and vehicle is placed on experimental provision
On, exciting directly is carried out to bogie wheel, this test method is difficult to reflect vehicle in actual travel with the working condition of crawler belt
And performance, the development of the work such as the analysis of stability and reliability of vehicle is constrained, vehicle research process is limited, while
It is difficult to can be carried out optimization to vehicle progressive, a kind of Vehicular vibration environmental simulation excitation with crawler belt operation is researched and developed based on this background
Loading device is of great significance.
Summary of the invention
To solve the above-mentioned problems, the present disclosure provides a kind of Vehicular vibration environmental simulation excitations with crawler belt operation
Loading device can satisfy vehicle band crawler belt in vibration-testing, and the requirement of crawler belt rotation operation during the experiment.
The technical solution adopted by the present invention is a kind of Vehicular vibration environmental simulation excitation loading device with crawler belt operation, should
It is a kind of rocking bar double-slider mechanism that Vehicular vibration environmental simulation, which motivates loading device, and excitation wheel and bogie wheel are all mounted on interlocking bar
On, when ensure that exciting, exciting force is acted on excitation wheel, during excitation wheel pushes bogie wheel to move upwards, in bogie wheel
The heart is aligned excitation wheel center always, and the excitation being transmitted on bogie wheel during test is always ensured that as swashing in vertical direction
It encourages, makes to generate offset between bogie wheel and excitation wheel position to reality so as to avoid the frictional force that crawler belt during test generates
The adverse effect that test data generates；To make the requirement with crawler belt and with operating crawler belt during test be achieved.
Simultaneously it is considered that there is also there is frictional force between excitation wheel and exciting pallet, in order to avoid excitation wheel as far as possible and swash
Vibration pallet directly contacts the frictional force of generation, and there are two deflector rolls for installation under exciting wheel support, and rolling will be constituted between exciting pallet
Dynamic pair, significantly reduces the frictional force generated between exciting pallet, so that test result is more reliable.The Vehicular vibration ring
Border analog stimulus loading device includes bogie wheel, horizontally-guided and excitation wheel three parts, and bogie wheel link block is mounted on bogie wheel
On, pass through bearing installation and the sliding pair on the pilot hole formation vertical direction in interlocking bar；Horizontal slider is fixedly mounted on connection
In lever, while the sliding pair on horizontal slider and horizontal guide rail installation composition transverse direction；Bogie wheel bottom is contacted with crawler belt, simultaneously
Bogie wheel is mounted in interlocking bar by installation axle；Excitation wheel is mounted on exciting wheel support, passes through the sliding block on vertical direction
It is mounted on upright guide rail, upright guide rail is mounted in interlocking bar, is excited at the same time wheel support lower part and is equipped with deflector roll, composition rolls
Pair, when exciting oil cylinder is vibrated, power, which is transmitted on pallet, passes to excitation wheel horizontal guide rail biography by exciting pallet again
To excitation wheel, by the assembling of this part and interlocking bar guarantee excitation wheel center and bogie wheel center always on a vertical line,
If excitation wheel is directly contacted with exciting pallet without this part-structure, although excitation wheel and bogie wheel are mounted in interlocking bar, rub
Wiping power can still make its horizontal direction position generate certain error, make excitation wheel center deviation bogie wheel center, to final experiment number
According to bringing deviation, therefore excitation wheel frame bottom is installed into two deflector rolls, so that it becomes rolling pair connects, substantially reduces friction
Power improves the reliability of test.
Loading procedure: S1 exciting oil cylinder applies being activated on exciting pallet 12 on vertical direction；S2 exciting pallet 12 will
Excitation on vertical direction passes to deflector roll 13 and bracket 15, then drives excitation wheel 11 to exist by the upright slide block 10 on excitation wheel
It is moved on vertical direction track 9；Excitation is passed to crawler belt 8 by S3 excitation wheel 11；S4 crawler belt 8 moves upwards transmitting excitation, will swash
It encourages and passes to bogie wheel 1, the displacement of vertical direction is completed by the pilot hole in weight bearing wheel shaft 18 and interlocking bar 2, is born a heavy burden simultaneously
Wheel shaft 18 and the balance arm 6 of vehicle are connected, and bogie wheel 11 can be made to generate lateral displacement, are led by horizontal slider 7 in level
Movement on rail 17 is achieved.
Compared with prior art, the invention has the advantages that: using excitation wheel by interlocking bar to the bogie wheel with crawler belt into
Row exciting, so that excitation wheel center face bogie wheel center always when exciting, substantially reduces and rub between crawler belt and bogie wheel
Influence of the resistance to test is excited at the same time the deflector roll of wheel support installation, also reduces the frictional force between excitation wheel and exciting pallet,
The influence of resistance in test is minimized, when bogie wheel and track vibration, horizontal direction, the fortune of vertical direction may be implemented
It is dynamic, simulate excitation complicated in actual condition.
The invention realizes the requirement in endless-track vehicle vibration test with track vibration, has filled up the sky of domestic this aspect
It is white, while the structure can also simulate the complex environment in practical endless-track vehicle traveling to a high degree, have structure simple, operation letter
Just, inexpensive feature.
Detailed description of the invention
Fig. 1 is schematic diagram
Fig. 2 is calculation specifications figure.
Fig. 3 is structure front view.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Exciting force as shown in Figure 2 acts on testing wheel, and testing wheel pushes bogie wheel to move upwards, and is connected with bogie wheel
Balance arm swing can generate the inertia force of horizontal direction；The angle of balance arm equipoise and horizontal plane is α, balance arm
Length is L, and the acceleration of bogie wheel in the vertical direction is a:
A=20g
The distance of initial position bogie wheel centre distance balance arm rotation center is H1:
H1=L1×sinα
The acceleration for decomposing horizontal direction at this time is a1:
a1=atan α
According to requiring, bogie wheel range is H, and when bogie wheel moves upward to extreme position, bogie wheel center is to putting down
The distance of weighing apparatus elbow rotation center is L2:
H2=H-H1；
The acceleration for decomposing horizontal direction at this time is a2:
a2=atan β
By calculating it is found that acceleration of the initial position in horizontal movement direction is a1, add less than what extreme position generated
Speed a2, therefore in entire motion process, bogie wheel horizontal direction acceleration is a2。
Crawler belt revolving speed is vx:
vx=z × l × nz
Z- is the driving wheel number of teeth in formula；L- is the pitch of driving wheel；nzIt is driving wheel revolving speed.
Horizontal velocity of the bogie wheel after accelerating for a period of time is v2, work as v2> vxWhen, sliding can be generated； v2< vxShi Hui
Generation is trackslipped, and can all be impacted to practical Position of Vibrating.
Based on this, the invention proposes a kind of Vehicular vibration environmental simulations with crawler belt operation to motivate loading device, the vehicle
Vibration environment analog stimulus loading device is a kind of rocking bar double-slider mechanism, as shown in Figure 1, making after balance arm connection bogie wheel
It for mechanism rocker section, is excited at the same time wheel and bogie wheel is mounted in interlocking bar, form sliding pair, while interlocking bar with interlocking bar
Sliding pair is also formed with the guide rail of horizontal direction, is guaranteed the center of the face bogie wheel always of excitation wheel center during exciting, is born
Roller institute excited target is always the excitation in vertical direction, and operation crawler belt is adversely affected caused by test and is minimized, real
Show and has required the requirement with operation track vibration.
The mechanical structure that the mechanism specifically uses is divided into bogie wheel part, horizontally-guided part and excitation wheel three parts, point
It states as follows:
Bogie wheel part: as shown in figure 3, bogie wheel link block 3 is joined with bolts by ring flange 4 in bogie wheel 1
On, while axis being undertaken in the pilot hole of interlocking bar 2, bogie wheel 1 be mounted on bearing 5 by the wheel shaft 18 that bears a heavy burden complete with
The connection of interlocking bar 2 forms sliding pair by bearing 5 and the pilot hole of interlocking bar 2 and drives weight bearing wheel shaft 18 in pilot hole
Up and down motion, and then bogie wheel 1 is driven to move, to realize that bogie wheel 1 being capable of movement in the vertical direction.
Horizontally-guided part: horizontal slider 7 is fixedly mounted in interlocking bar 2 by screw, while horizontal slider 7 is mounted on
On horizontal guide rail 17,17 groups of horizontal slider 7 and horizontal guide rail horizontally on sliding pair, realize that bogie wheel 1 can be in water
It square moves upwards.
Excitation wheel part: excitation wheel 11 and excitation wheel link block 16 are fixed, while being fixed on by ring flange and bolt sharp
On vibration wheel bracket 15, the guide rail 9 being equipped on vertical direction in interlocking bar 2 is fixed with upright slide block on exciting wheel support 15
10, upright slide block 10 is assembled together with guide rail 9, realizes that excitation wheel 11 being capable of movement in the vertical direction；Deflector roll 13 passes through
Guide roller axis 14 is mounted on exciting wheel support 15.
The present invention be used for caterpillar test, in use, by caterpillar shift mechanism by vehicles drive extremely
On shaking platform, after being then aligned vehicle bogie wheel 1 with 11 center line of excitation wheel, the assembling of vibration-testing structure is carried out, to group
It installs into and starts caterpillar vibration-testing.
In vibration-testing, being activated on exciting pallet 12 in vertical direction is applied by exciting oil cylinder, then by exciting support
The displacement that disk 12 transmits on vertical direction passes to exciting wheel support 15 via deflector roll 13, passes through the upright slide block 10 on excitation wheel
Excitation wheel 11 is driven to move on the guide rail 9 of vertical direction, when excitation wheel 11 transmits the force to crawler belt 8, crawler belt 8 is transported upwards
It is dynamic, drive bogie wheel 1 to generate upward displacement by the pilot hole in weight bearing wheel shaft 18 and interlocking bar 2, the effect of interlocking bar 2 guarantees
The center of bogie wheel 1 11 center of face excitation wheel always, the influence of frictional force between crawler belt 8 and bogie wheel 1 is greatly reduced, together
When weight bearing wheel shaft 18 and the balance arm 6 of vehicle be connected, can make at this time bogie wheel 1 generation horizontal displacement, existed by horizontal slider 7
Movement on horizontal guide rail 17 is achieved.
To simulate actual working state, when exciting, crawler belt 8, which is driven by motor, generates clockwise rotation, and 8 turns of crawler belt
There is a frictional force to the left to excitation wheel 11 when dynamic, so that excitation wheel 11 rotates in an anti-clockwise direction, if without exciting wheel portion
Point, directly excitation wheel 11 is put on exciting pallet 12 and is loaded, then the frictional force between exciting pallet 12 and excitation wheel 11 may
11 motion state of excitation wheel can be made to change, large effect is generated to crawler belt 8, so that the movement of crawler belt 8 is to test result
Bring larger impact.Exciting pallet 12 is reduced by 13 transmission force of deflector roll so that excitation wheel only does pure rolling friction
Frictional force is minimized the adverse effect of experiment；In conclusion the present invention is able to satisfy test requirements document completely.
Claims (3)
1. a kind of Vehicular vibration environmental simulation with crawler belt operation motivates loading device, it is characterised in that: the Vehicular vibration environment
Analog stimulus loading device is a kind of rocking bar double-slider mechanism, and balance arm is used as mechanism rocker section after coupling bogie wheel, simultaneously
Excitation wheel and bogie wheel are mounted in interlocking bar, form sliding pair, while the guide rail of interlocking bar and horizontal direction with interlocking bar
Sliding pair is formed, guarantees the center of excitation wheel center face bogie wheel always during exciting, bogie wheel institute excited target is always
Operation crawler belt is adversely affected caused by test and is minimized by the excitation in vertical direction, realizes requirement band operation crawler belt
The requirement of vibration.
The mechanical structure that the mechanism specifically uses is divided into bogie wheel part, horizontally-guided part and excitation wheel three parts:
Bogie wheel part: bogie wheel link block (3) is joined with bolts on bogie wheel (1) by ring flange (4), simultaneously will
Axis is undertaken in the pilot hole of interlocking bar (2), and bogie wheel (1) is mounted on bearing (5) by weight bearing wheel shaft (18) and completes and join
The connection of lever (2) forms sliding pair by the pilot hole of bearing (5) and interlocking bar (2) and weight bearing wheel shaft (18) is driven to lead
Up and down motion into hole, and then bogie wheel (1) movement is driven, to realize that bogie wheel (1) being capable of fortune in the vertical direction
It is dynamic.
Horizontally-guided part: horizontal slider (7) is fixedly mounted on interlocking bar (2) by screw, while horizontal slider (7) is installed
On horizontal guide rail (17), the sliding pair on horizontally is organized in horizontal slider (7) and horizontal guide rail (17), realizes bogie wheel
(1) it can move in the horizontal direction.
Excitation wheel part: excitation wheel (11) and excitation wheel link block (16) are fixed, while being fixed on by ring flange and bolt sharp
On vibration wheel bracket (15), the guide rail (9) being equipped on vertical direction in interlocking bar (2) is fixed on exciting wheel support (15) perpendicular
Straight sliding block (10), upright slide block (10) are assembled together with guide rail (9), and realization excitation wheel (11) being capable of fortune in the vertical direction
It is dynamic；Deflector roll (13) is mounted on exciting wheel support (15) by guide roller axis 14.
2. a kind of Vehicular vibration environmental simulation with crawler belt operation according to claim 1 motivates loading device, feature
Be: the test of caterpillar is in use, by caterpillar shift mechanism by vehicles drive to shaking platform, then
After vehicle bogie wheel (1) is aligned with excitation wheel (11) center line, the assembling of vibration-testing structure is carried out, completion to be assembled starts to carry out
The test of belt Vehicular vibration.
In vibration-testing, being activated on exciting pallet (12) in vertical direction is applied by exciting oil cylinder, then by exciting pallet
(12) displacement transmitted on vertical direction passes to exciting wheel support (15) via deflector roll (13), passes through the vertical cunning on excitation wheel
Block (10) drives excitation wheel (11) to move on the guide rail (9) of vertical direction, when excitation wheel (11) transmits the force to crawler belt (8)
When, crawler belt (8) moves upwards, and drives bogie wheel (1) to generate by the pilot hole on weight bearing wheel shaft (18) and interlocking bar (2) upward
Displacement, interlocking bar (2) effect guarantees center face excitation wheel (11) center always of bogie wheel (1), by crawler belt (8) and weight bearing
The influence of frictional force greatly reduces between wheel (1), while the wheel shaft that bears a heavy burden (18) and the balance arm 6 of vehicle are connected, and can make at this time
Bogie wheel (1) generates horizontal displacement, is achieved by movement of the horizontal slider (7) on horizontal guide rail (17).
3. a kind of Vehicular vibration environmental simulation with crawler belt operation according to claim 2 motivates loading device, feature
Be: to simulate actual working state, when exciting, crawler belt (8), which is driven by motor, generates clockwise rotation, crawler belt (8)
There is a frictional force to the left to excitation wheel (11) when rotation, so that excitation wheel (11) rotates in an anti-clockwise direction, if without swashing
Excitation wheel (11) is directly put on exciting pallet (12) and loads by vibration wheel part, then exciting pallet (12) and excitation wheel (11) it
Between frictional force so that excitation wheel (11) motion state is changed, crawler belt (8) is had an impact, so that crawler belt (8)
Movement affects test result.Exciting pallet (12) is by deflector roll (13) transmission force, so that excitation wheel only does pure rolling
Dynamic friction reduces frictional force, is minimized to the adverse effect of experiment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910507985.XA CN110274770A (en) | 2019-06-12 | 2019-06-12 | A kind of Vehicular vibration environmental simulation excitation loading device with crawler belt operation |
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| CN201910507985.XA CN110274770A (en) | 2019-06-12 | 2019-06-12 | A kind of Vehicular vibration environmental simulation excitation loading device with crawler belt operation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729743A (en) * | 2021-01-07 | 2021-04-30 | 泉州恒利达工程机械有限公司 | Anticreep chain testing arrangement of crawler-type excavator |
| CN115167550A (en) * | 2022-06-20 | 2022-10-11 | 中国农业大学 | Tracked vehicle vibration control method based on virtual simulation test |
| CN117991645A (en) * | 2024-03-28 | 2024-05-07 | 湖南科技大学 | Multipoint cooperative control method of road simulation system |
| CN117991645B (en) * | 2024-03-28 | 2024-07-02 | 湖南科技大学 | Multipoint cooperative control method of road simulation system |
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