CN107677488A - The system and traction power method of testing loaded using fixed loading device to tested vehicle - Google Patents
The system and traction power method of testing loaded using fixed loading device to tested vehicle Download PDFInfo
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- CN107677488A CN107677488A CN201710982774.2A CN201710982774A CN107677488A CN 107677488 A CN107677488 A CN 107677488A CN 201710982774 A CN201710982774 A CN 201710982774A CN 107677488 A CN107677488 A CN 107677488A
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- 238000010998 test method Methods 0.000 title claims description 4
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 230000008569 process Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000013095 identification testing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/247—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying tractive or propulsive force and velocity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of system loaded using fixed loading device to tested vehicle, the accuracy, stability and security of tested vehicle pulling test can be effectively improved, the labor intensity of testing crew is reduced, extends the application of new technology, enriches industry means of testing.A kind of system loaded using fixed loading device to tested vehicle, include support, plunger pump, hydraulic station, gear, winch, steel wire rope and reversion motor including drive device, plunger pump, gear, winch and reversion motor are arranged on support, hydraulic station is connected with plunger pump, plunger pump output terminal connection speed variator structure, connection winch, winch are connected through steel wire rope with tested vehicle simultaneously for gear and reversion motor；With vehicle status parameters measurement apparatus, it is arranged on tested vehicle, is acquired for tested vehicle state parameter.
Description
Technical field
The present invention relates to a kind of experimental rig, and in particular to one kind is added using fixed loading device to tested vehicle
The system and traction power method of testing of load.
Background technology
In recent years, Tendency of Agricultural Machinery in China achieved huge achievement, and agro-based industry has obtained tremendous development.In tested vehicle
During identification and quality testing, traction power experiment is one of important test event.It can be obtained by this experiment tested
Try the important performance indexes such as the maximum drawbar pull of tested vehicle, maximum traction power.These indexs are to judging tested vehicle quality
It is whether qualified or whether to reach design requirement most important.
Traction load loading system application starts from 1920's Mo, but so far, in the world only a small number of states
The research unit and production division of family have developed the load on of all kinds, different load grade according to different test requests
Equipment.Such as the First load converted by Cliver1885 tested vehicles of Nebraska,USA tested vehicle laboratory
Car, the power wagon that the power wagon of Italian Bai Lun universities agricultural machinery Research Institute, agricultural machinery experiment station of German agriculture association develop etc.,
The method simple refit that the earliest power wagon in China is utilized in installation test instrumentation on the vehicle slightly larger than tested test run forms.
Until in recent years, domestic units concerned successively have developed the special power wagon that different industries use, as Xiamen City's product quality is supervised
Superintend and direct the multi-functional load tractors of FHC300 types 300kN by heavy-duty off-road vehicle chassis refit for examining institute to develop, Ministry of Agriculture's agricultural machinery
Identify power wagon converted by the large-scale bow steering type tested vehicle of the type of Dongfanghong -1854 of master station etc..
The main feature for summarizing domestic and international power wagon is as follows：
1）Dynamometer machine using air-cooled or water-cooled electric eddy current dynamometer, direct current dynamometer, hydraulic loading device, fan and starts more
Machine exhaust brake etc., in addition to using fan and engine exhaust and brake, it will be exported by controllable dynamometer machine by instruction carriage
Power is dispersed into air in the form of heat, realizes the loading procedure to being tested vehicle；
2）Chassis vehicle is reequiped using all-wheel drive vehicles or tested vehicle, has voluntarily ability, but repacking means, structure are each
It is different；
3）Dynamometer machine test parameter is complete, but can not realize continuous measurement experiment process in real time mostly, and sub-load car has certainly
Control function；Test process labor intensity is big, test period length, and test result accuracy is low.
Traction power load on equipment is to carry out the necessary means of surface car traction investigation and test evaluation, right
Play the role of in the research and development of surface car and performance evaluation important.Only have a few countries in the world, according to different test requests
The traction load car with special adaptive be have developed as loading equipemtn.The country uses make-shift equipment, its defect mostly for a long time
It is：Experimentation cost is high, efficiency is low, Loading Control is unstable, the confidence level of result is relatively low.
The content of the invention
, can be effective it is an object of the present invention to provide a kind of system loaded using fixed loading device to tested vehicle
Accuracy, stability and the security of tested vehicle pulling test are improved, reduces the labor intensity of testing crew, extends new technology
Application, enrich industry means of testing.
To achieve these goals, the present invention uses following technical scheme：
A kind of system loaded using fixed loading device to tested vehicle, including
Drive device includes support, plunger pump, hydraulic station, gear, winch, steel wire rope and reversion motor, plunger pump, speed change
Mechanism, winch and reversion motor are arranged on support, and hydraulic station is connected with plunger pump, plunger pump output terminal connection speed variator
Connection winch, winch are connected through steel wire rope with tested vehicle simultaneously for structure, gear and reversion motor；With
Vehicle status parameters measurement apparatus, is arranged on tested vehicle, is acquired for tested vehicle state parameter.
The above-mentioned system preferred scheme loaded using fixed loading device to tested vehicle, vehicle status parameters are surveyed
Amount device includes：
Drawbar load sensing mechanism, steel wire rope and tested vehicle junction are arranged on, for measuring the tractive force applied to tested vehicle；
Wheel revolutions sensor, it is arranged on tested vehicle wheel, for measuring tested vehicle wheel revolutions；
GPS velocity sensor, tested vehicle front end is arranged on, for measuring the travel speed and operating range of tested vehicle；
Oil consumption sensor, is arranged on tested vehicle, the fuel consumption to being tested tested vehicle.
The above-mentioned system preferred scheme loaded using fixed loading device to tested vehicle, hydraulic station include hydraulic pressure
Fuel tank, coarse filter, auxiliary hydraulic pump, fine filter, check valve, the first solenoid directional control valve, electro-hydraulic proportional throttle valve, oil-water cooler
And second solenoid directional control valve, hydraulic oil container outlet connection coarse filter, coarse filter are connected by auxiliary hydraulic pump with fine cleaner, carefully
Filter is also connected with one-way valve inlet end, and one-way valved outlet end connects the first solenoid directional control valve and the connection of the second solenoid directional control valve respectively
Two interfaces of plunger pump, the second electromagnetic switch valve outlet connect by choke valve, oil-water cooler with hydraulic oil container successively.
The above-mentioned system preferred scheme loaded using fixed loading device to tested vehicle, it also includes control system
System, including vehicle-mounted data processing terminal, wireless transmitter module, wireless receiving module and main control computer, vehicle-mounted data processing terminal
For receiving vehicle status parameters measurement apparatus gathered data and being handled, wireless transmitter module is used to pass the data of processing
Wireless receiving module is defeated by, main control computer communicates with vehicle-mounted data processing terminal.
It is a kind of to carry out traction power experiment survey using the system loaded using fixed loading device to tested vehicle
Method for testing, comprise the following steps：
1）Set-up procedure:Tested vehicle travels 20m in the case of without tractive load, with 3.5km/h speed, is passed by GPS velocity
Sensor 12 obtains the travel speed and operating range of tested vehicle, obtains tested tested vechicle respectively by wheel revolutions sensor 10
It is left and right to take turns the number of turns turned over、, you can obtain the dynamic radius index of tested vehicle；
2）Tested vehicle is tested:Testing crew carries out electrodeless setting by control system to the power output of plunger pump,
Apply positive tractive resistance and speed to being tested tractor through gear, winch and steel wire rope, oil consumption sensor obtains
The fuel oil g consumed during tested tested vehicle experiment, the traction of tested tested vehicle is obtained by drawbar load sensing mechanism
Power, the travel speed of tested vehicle is obtained by GPS velocity sensor 12And operating range, by wheel revolutions sensor 10
The number of turns that the left and right wheel of tested tested vehicle turns over is obtained respectively、, then tested vehicle slippage rate,
Tested tested vehicle traction power；
3）When tested tractor completes a test stroke, testing crew switches the first electromagnetism in hydraulic system by control system
The station of reversal valve and the second solenoid directional control valve, reversely connects plunger pump, and original position is retracted by reversion motor by tested vehicle,
Start next test stroke.
The beneficial effects of the invention are as follows：
The present invention can test that is more convenient, fast, being accurately finished tested vehicle traction power；The examination that the present invention is implemented
Proved recipe case, the test data of tested vehicle is monitored in real time using computer remote, according to test data to being tested vehicle
Apply it is accurate, stably, the tractive resistance of continuously adjustabe, experiment process loading is accurate, easy to operate, automaticity is high, effectively
Improve the security of experiment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is hydraulic station operation principle schematic diagram.
Label in figure：1st, support, 2, plunger pump, 3, hydraulic station, 4, gear, 5, winch, 6, main control computer, 7, nothing
Line receiving module, 8, steel wire rope, 9, drawbar load sensing mechanism, 10, wheel revolutions sensor, 11, oil consumption sensor, 12, GPS velocity
Sensor, 13, wireless transmitter module, 14, vehicle-mounted data processing terminal, 15, reversion motor, 16, hydraulic oil container, 17, coarse filter,
18th, auxiliary hydraulic pump, 19, fine filter, 20, check valve, the 21, second solenoid directional control valve, 22, overflow valve, 23, electric-hydraulic proportion throttling
Valve, 24, oil-water cooler, the 25, first solenoid directional control valve.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
The present invention is further described.
A kind of system loaded using fixed loading device to tested vehicle, including drive device, vehicle-state
Parameter measuring apparatus and control system.
Drive device is used for tested vehicle and applies positive resistance and reversal interlocking relay, including support 1, plunger pump 2, hydraulic station 3,
Gear 4, winch 5, steel wire rope 8 and reversion motor 15, plunger pump 2, gear 4, winch 5 and reversion motor 15 are respectively provided with
On support 1, hydraulic station 3 is connected with plunger pump 2, the output end connection speed variator structure 4 of plunger pump 2, gear 4 and reversion electricity
Connection winch 5, winch 5 are connected machine 15 through steel wire rope 8 with tested vehicle simultaneously；
Vehicle status parameters measurement apparatus, it is acquired for tested vehicle state parameter, vehicle status parameters measurement apparatus bag
Include：Drawbar load sensing mechanism 9, steel wire rope 8 and tested vehicle junction are arranged on, for measuring the traction applied to tested vehicle
Power；Wheel revolutions sensor 10, it is arranged on tested vehicle wheel, for measuring tested vehicle wheel revolutions；GPS velocity senses
Device 12, tested vehicle front end is arranged on, for measuring the travel speed and operating range of tested vehicle；Oil consumption sensor 11, if
Put in tested vehicle, the fuel consumption to being tested tested vehicle.
Hydraulic station 3 includes hydraulic oil container 16, coarse filter 17, auxiliary hydraulic pump 18, fine filter 19, the electricity of check valve 20, first
Magnetic reversal valve, electro-hydraulic proportional throttle valve 23, the solenoid directional control valve of oil-water cooler 24 and second, the outlet of hydraulic oil container 16 connection coarse filtration
Device 17, coarse filter 17 are connected by auxiliary hydraulic pump 18 with fine cleaner, and fine cleaner is also connected with the arrival end of check valve 20, check valve
20 ports of export connect the first solenoid directional control valve respectively and the second solenoid directional control valve connection 2 two interfaces of plunger pump, the second electromagnetism change
Connected successively by choke valve, oil-water cooler 24 with hydraulic oil container 16 to valve outlet.
Control system, including vehicle-mounted data processing terminal 14, wireless transmitter module 13, wireless receiving module 7 and master control electricity
Brain 6, vehicle-mounted data processing terminal 14 are used to receive vehicle status parameters measurement apparatus gathered data and be handled, wireless transmission
Module 13 is used to the data of processing being transferred to wireless receiving module 7, and main control computer 6 communicates with vehicle-mounted data processing terminal 14.
It is a kind of to carry out traction power experiment survey using the system loaded using fixed loading device to tested vehicle
Method for testing, comprise the following steps：
1）Set-up procedure:
A, vehicle status parameters measurement apparatus, vehicle-mounted data processing terminal 14 and wireless transmitter module 13 are arranged on tested test run
On；
B, tested vehicle travels 20m with 3.5km/h speed, obtained by GPS velocity sensor 12 in the case of without tractive load
The travel speed and operating range of tested vehicle, obtain the left and right wheel of tested tested vehicle respectively by wheel revolutions sensor 10
The number of turns turned over、, you can obtain the dynamic radius index of tested vehicle, by steel wire rope 8 hang over by
Test on vehicle drawbar load sensing mechanism 9；
2）Tested vehicle is tested:
Tested vehicle is tested:Testing crew carries out electrodeless setting, warp by control system to the power output of plunger pump 2
Gear 4, winch 5 and steel wire rope 8 apply positive tractive resistance and speed to being tested tractor, positioned at the examination of control room
Personnel are tested by the tested vehicle status parameters of the monitoring in real time of main control computer 6, and the output to plunger pump 2 in the system of winch 5 is arranged
Amount q and output pressure p is controlled in real time, and control process be able to can also both be used tested by the use of tractive resistance as object function
Test run slippage rate applies stable, continuously adjustabe tractive resistance and speed to being tested vehicle, is located at as object function
By main control computer 6, monitoring is tested vehicle status parameters to the testing crew of control room in real time, and to plunger pump in the system of winch 5
2 output displacement q and output pressure p is controlled in real time, and control process both can also may be used by the use of tractive resistance as object function
Using by the use of tested vehicle slippage rate as object function, to be tested vehicle apply stable, continuously adjustabe tractive resistance and
Speed, at least 20m distance or maintenance 20s distance are persistently travelled to be tested its straight line（The time is taken in both compared with elder）
For a measurement period, record traction power, tractive force, speed, slippage rate, oil consumption and environmental aspect, until slippage rate meets mark
Test requirements document as defined in standard, wherein oil consumption sensor 11 obtain the fuel oil consumed during tested tested vehicle experiment,
The tractive force of tested tested vehicle is obtained by drawbar load sensing mechanism 9, the row of tested vehicle is obtained by GPS velocity sensor 12
Sail speedAnd operating range, obtain the number of turns that the left and right wheel of tested tested vehicle turns over respectively by wheel revolutions sensor 10、, then tested vehicle slippage rate, it is tested tested vehicle traction power；
3）When tested tractor completes a test stroke, testing crew switches the first electromagnetism in hydraulic system by control system
The station of reversal valve and the second solenoid directional control valve, plunger pump 2 is reversely connected, start bit is retracted by reversion motor 15 by tested vehicle
Put, start next test stroke.
In above-mentioned steps object function, the output displacement q of pilot plunger pump 2 and output are used as by the use of tested vehicle traction
Pressure p, the tractive force of each test period is controlled, tractive force increases successively, until slippage rate approaches but no more than 15%；With quilt
Vehicle slippage rate is tested as object function, the output displacement q and output pressure p of pilot plunger pump 2, controls each test period
Slippage rate, make the slippage rate of each test period increase successively, until slippage rate is close but no more than 15%.
Above-mentioned embodiment is only the specific case of the present invention, is not the limitation for making other forms to the present invention,
Any person skilled in the art is changed or is modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent implementations.But on the premise of every principle without departing from the technology of the present invention, the technical spirit according to the present invention is to the above
Any simple modification, equivalent variations and the remodeling that embodiment is made, should all fall into protection scope of the present invention.
Claims (6)
- A kind of 1. system loaded using fixed loading device to tested vehicle, it is characterised in that including:Drive device includes support, plunger pump, hydraulic station, gear, winch, steel wire rope and reversion motor, plunger pump, speed change Mechanism, winch and reversion motor are arranged on support, and hydraulic station is connected with plunger pump, plunger pump output terminal connection speed variator Connection winch, winch are connected through steel wire rope with tested vehicle simultaneously for structure, gear and reversion motor；WithVehicle status parameters measurement apparatus, is arranged on tested vehicle, is acquired for tested vehicle state parameter.
- 2. the system loaded according to claim 1 using fixed loading device to tested vehicle, it is characterised in that: Vehicle status parameters measurement apparatus includes：Drawbar load sensing mechanism, steel wire rope and tested vehicle junction are arranged on, for measuring the tractive force applied to tested vehicle；Wheel revolutions sensor, it is arranged on tested vehicle wheel, for measuring tested vehicle wheel revolutions；GPS velocity sensor, tested vehicle front end is arranged on, for measuring the travel speed and operating range of tested vehicle；Oil consumption sensor, is arranged on tested vehicle, the fuel consumption to being tested tested vehicle.
- 3. the system loaded according to claim 2 using fixed loading device to tested vehicle, it is characterised in that: Hydraulic station includes hydraulic oil container, coarse filter, auxiliary hydraulic pump, fine filter, check valve, the first solenoid directional control valve, electric-hydraulic proportion section Valve, oil-water cooler and the second solenoid directional control valve are flowed, hydraulic oil container outlet connects coarse filter, and coarse filter is same by auxiliary hydraulic pump Fine cleaner is connected, and fine cleaner is also connected with one-way valve inlet end, and one-way valved outlet end connects the first solenoid directional control valve and second respectively Solenoid directional control valve connects two interfaces of plunger pump, and the second electromagnetic switch valve outlet passes through choke valve, oil-water cooler and liquid successively Press oil case connection.
- 4. the system loaded according to claim 3 using fixed loading device to tested vehicle, it is characterised in that: It also includes control system, including vehicle-mounted data processing terminal, wireless transmitter module, wireless receiving module and main control computer, car Carry data processing terminal to be used to receive vehicle status parameters measurement apparatus gathered data and be handled, wireless transmitter module is used for The data of processing are transferred to wireless receiving module, main control computer communicates with vehicle-mounted data processing terminal.
- 5. a kind of drawn using the system for using fixed loading device to load tested vehicle described in claim 4 Power test method of testing, it is characterised in that comprise the following steps：1）Set-up procedure:Tested vehicle travels 20m in the case of without tractive load, with 3.5km/h speed, is passed by GPS velocity Sensor 12 obtains the travel speed and operating range of tested vehicle, obtains tested tested vechicle respectively by wheel revolutions sensor 10 It is left and right to take turns the number of turns turned over、, you can obtain the dynamic radius index of tested vehicle；2）Tested vehicle is tested:Testing crew carries out electrodeless setting by control system to the power output of plunger pump, Apply positive tractive resistance and speed to being tested tractor through gear, winch and steel wire rope, oil consumption sensor obtains The fuel oil g consumed during tested tested vehicle experiment, the traction of tested tested vehicle is obtained by drawbar load sensing mechanism Power, the travel speed of tested vehicle is obtained by GPS velocity sensor 12And operating range, by wheel revolutions sensor 10 The number of turns that the left and right wheel of tested tested vehicle turns over is obtained respectively、, then tested vehicle slippage rate, Tested tested vehicle traction power；3）When tested tractor completes a test stroke, testing crew switches the first electromagnetism in hydraulic system by control system The station of reversal valve and the second solenoid directional control valve, reversely connects plunger pump, and original position is retracted by reversion motor by tested vehicle, Start next test stroke.
- 6. the system loaded according to claim 5 using fixed loading device to tested vehicle carries out traction power Testing method, it is characterised in that:Tested vehicle slippage rate is 7-15%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710982774.2A CN107677488B (en) | 2017-10-20 | 2017-10-20 | System for loading tested vehicle by adopting fixed loading device and traction power testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710982774.2A CN107677488B (en) | 2017-10-20 | 2017-10-20 | System for loading tested vehicle by adopting fixed loading device and traction power testing method |
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| CN107677488A true CN107677488A (en) | 2018-02-09 |
| CN107677488B CN107677488B (en) | 2024-01-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857649A (en) * | 2021-04-01 | 2021-05-28 | 洛阳西苑车辆与动力检验所有限公司 | Full-hanging type traction performance testing system and testing method thereof |
| CN112857824A (en) * | 2021-01-06 | 2021-05-28 | 长安大学 | Engineering machine tool traction performance test bench |
| CN113933058A (en) * | 2020-07-13 | 2022-01-14 | 北京福田康明斯发动机有限公司 | Method for testing exhaust pressure when exhaust brake is started |
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