CN204882086U - Single round soil box test bench - Google Patents
Single round soil box test bench Download PDFInfo
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- CN204882086U CN204882086U CN201520566266.2U CN201520566266U CN204882086U CN 204882086 U CN204882086 U CN 204882086U CN 201520566266 U CN201520566266 U CN 201520566266U CN 204882086 U CN204882086 U CN 204882086U
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Abstract
The utility model relates to a single opinion soil box test bench, including the soil box system, the intelligent control mechanism further comprises a drive syste, pull the system, control system and data acquisition system, the actuating system is including driving movable support, it is long square frame to drive movable support, long square frame inboard is equipped with linear bearing, establish perpendicular guide arm in the linear bearing, perpendicular guide arm lower extreme mounting plate, the bottom plate is equipped with wheel fixed axle support, wheel -mounted fixed axle in the wheel fixed axle support, the wheel fixed axle cup joints second speed reduction sprocket, the 2nd drive sprocket is connected to second speed reduction sprocket, the 2nd drive sprocket connects first speed reduction sprocket, the drive sprocket of dress on driving motor is connected to first speed reduction sprocket, the system that pulls is including pulling the motor, it is equipped with first driving gear on the motor output shaft to pull, a first initiative gear connection reducing gear, a reducing gear connects the second driving gear, the 2nd reducing gear of second initiative gear connection. Adopt the utility model discloses the structure can effectively shorten vehicle development period for research speed.
Description
Technical field
The utility model relates to a kind of test platform, especially a kind of single-wheel soil slot test stand.
Background technology
According to the applicant understood, indoor soil tank is the indispensable experimental facilities of a kind of soil-machine system research, and existing soil box is normally used for studying agricultural machinery performance.Since the thirties in last century, in order to improve the test accuracy of agricultural machinery, many countries establish soil slot test stand system in succession.Usually, soil slot test stand is under the simulation water percentage of field soil and the condition of consolidation, control the rotating speed of the haulage speed of agricultural machinery and implement, tilling depth and rotary part, the parameter such as pulling force, rotary torque that test agricultural machinery and implement are suffered in advancing, thus analyze pulling force, moment of torsion and haulage speed, tilling depth, corresponding relation between rotating speed, for the exploitation of facility and research provide design considerations.
In recent years, soil slot test stand is used in the test of wheel of vehicle travelling performance gradually.Vehicle-terra mechanics is a test and the theoretical subject combined, and it is the very important research means of wheel terra mechanics that introduction soil box carries out simulation test.When carrying out offroad vehicle and mellow soil studies, obtain corresponding data by actual soft terrain test, but due to following reason, actual soft terrain tested and is restricted:
Even a) same soft terrain, soil types and soil regime change also very greatly, are difficult to find ideal soft terrain to test;
B) water cut is very large to the properties influence of soil, for actual ground, is difficult to effective controller water cut;
C) same ground repeats test of many times, and soil treatment bothers and has certain difficulty;
D) actual ground test is subject to the impact of the external factor such as season, weather, and in test, many factors are uncontrollable, cause the precision of test figure not high, and can not test constantly.
But soil bin test is not affected by the external environment, the research carrying out offroad vehicle and mellow soil by indoor soil tank test becomes the trend that vehicle-terra mechanics develops.Since 21 century, along with various countries are to the research of planetary detection, in succession develop the special Soil Bin Testing System of planetary detection of degree of precision, and extensively carried out experimental and theoretical study work, such as northeastern Japan university is the test macro that interacts with have developed planetary detection wheel; Carnegie-Mellon University devises circumference single-wheel soil slot test stand, with the travelling performance of simulating wheel on planetary surface mellow soil; Massachusetts Institute Technology devises wheel mobility test macro in calendar year 2001, and this system can test the parameters such as draw bar load in traveling, sinkage and vehicle slippage rate.Domestic Harbin Institute of Technology, BJ University of Aeronautics & Astronautics and Jilin University also establish corresponding Soil Bin Testing System.But current single-wheel soil slot test stand focuses mostly in planetary detection, what be not suitable for carrying out Large off-road wheel of vehicle passes through performance study.
Utility model content
The purpose of this utility model is: the deficiency existed for above-mentioned prior art, a kind of single-wheel soil slot test stand is proposed, for studying the property passed through of soft terrain running vehicle wheel, and running resistance, tractive force, slippage rate, the parameter such as ground pressure and sinkage of wheel under measuring different mellow soil situation, for the design of off-road vehicle provides theoretical foundation.
In order to reach above object, the technical solution of the utility model is as follows:
A kind of single-wheel soil slot test stand, comprises soil box system, drive system, pulls system, control system and data acquisition system (DAS), and wherein said soil box system forms primarily of soil box body with along the walking guide rail that soil box body is arranged, described drive system comprises the driving arm being arranged on the guide rail movement and walk in edge on walking guide rail, described driving arm is rectangular frame, perpendicular displacement sensor is provided with outside the frame of described rectangular frame, the probe of perpendicular displacement sensor is towards the base plate of drive system, can be used to the sinkage measuring wheel center place, the scuncheon of described rectangular frame is provided with several linear bearings, in described linear bearing, vertical guide stem is set, described vertical guide stem can linearly slide up and down by bearing, the lower end of described vertical guide stem is fixedly mounted on base plate by vertical guide stem bearing, described base plate is shaped with groove, described base plate is positioned at groove both sides and is provided with wheel stationary shaft bearing, described wheel stationary shaft bearing is built with wheel stationary shaft, and described wheel stationary shaft can rotate in wheel stationary shaft bearing, described wheel stationary shaft is fixedly connected with the wheel be arranged in bottom plate groove, described wheel stationary shaft is socketed the second deceleration sprocket wheel, described second deceleration sprocket wheel is connected with the second drive sprocket by driving chain, described second drive sprocket is connected with the first deceleration sprocket wheel, described first deceleration sprocket wheel is connected with the first drive sprocket be arranged on drive motor output shaft by driving chain, between described first deceleration sprocket wheel and described second drive sprocket, driving torque-speed probe is set by shaft coupling, the described system that pulls comprises and pulls motor, the described output shaft pulling motor be provided with the first driving gear and pull moment of torsion-speed probe, described first driving gear is connected with the first reduction gearing by pulling chain, described first reduction gearing is connected with the second driving gear by pulling chain, and described second driving gear is by pulling chain and driving arm is connected with the second reduction gearing.
The drive system of the utility model design and pull system and can simulate the stressing conditions of off-road vehicle when soft terrain travels better, and then simulating wheel trackslips process.In drive system with while pulling system works, perpendicular displacement sensor can measure wheel sinkage amount in real time, ground pressure when wheel passes through measured by pressure transducer, therefore design of the present utility model is very effective by the impact of performance on off-road vehicle for factors such as research slippage rate, tire pressure, travel speed and load, and there is certain versatility, be applicable to the research of multiple tire by property.In addition, adopt the design of vertical guide stem and linear bearing, vertical guide stem can ensure that drive system realizes smooth-going vertical movement, is also delivered on driving arm by linear bearing by the resistance that the system that pulls applies, realizes the simulation of tractive force.Wheel free movement in the vertical direction can not only be realized like this, and Fast Modular draws up the depression of wheel, and then ensure that drive system is smooth-going up and down and beat, the gap between vertical guide stem and driving arm can also be reduced, and then reduce to apply the impact that brings drive system of resistance by pulling system.
The structure of the further refinement of the utility model is as follows:
In technique scheme, soil box body is rectangular body structure, and it is built with test soil; The first truss is transversely furnished with in body structure, first truss comprises two crossbeams and two longerons and four first columns that be arranged in parallel, crossbeam and longeron head and the tail connect to form closed framework, the corner of framework is provided with the first column straight down, and between two first columns of described framework one end, be also connected with at least two longerons, crossbeam is provided with at least two reinforcements straight down; The two ends, left and right of the first truss connect left and right second truss respectively, left and right second truss includes at least two-layer rectangle rack, rectangle rack is fixedly connected with the first column near a side of the first truss, another side is fixedly connected with the second column, and every layer of rectangle rack is connected the auxiliary girder composition of two curb girder ends with one primarily of two curb girders be oppositely arranged, auxiliary girder and longeron be arranged in parallel, curb girder is fixedly connected with auxiliary girder and longeron head and the tail, and the second pillar is vertically set on the junction of described curb girder and auxiliary girder.
In technique scheme, first truss is provided with walking guide rail, described walking guide rail is made up of first, second channel-section steel, described first channel-section steel opening is arranged on a crossbeam of the first truss inwardly, described second channel-section steel opening is arranged on another root crossbeam of the first truss inwardly, and the opening of first, second channel-section steel described is connected by the side of one group of double card wheel apparatus and driving arm; The top layer of described left and right second truss is equipped with the first grid-like component, described first grid-like component is provided with bearing seat, described bearing seat is installed the first reduction gearing, the second reduction gearing or the second driving gear; The middle layer of described right second truss is provided with the second grid-like component, and described second grid-like component is provided with motor support base, described motor support base is installed and pulls motor.
In technique scheme, double card wheel apparatus comprises upper and lower two card wheels, card wheel one end stretch out card release wheel support, the card wheel periphery of support and the opening inwall of first, second channel-section steel match, the other end of card wheel is provided with card wheel shaft, card wheel shaft is rotationally connected with in the axis hole of card axle support, bearing is adopted to be rotationally connected between this scale wheel and card axle support, card can be reduced to walk around dynamic resistance, card axle support is fixedly mounted on the side of driving arm, and four edges of driving arm are provided with roller.Double card is adopted to take turns design between driving arm and guide rail, card wheel and card wheel support adopt nylon to make, upper and lower two card wheels are utilized to be stuck in by driving arm inside walking guide rail firmly, not only reduce driving arm running resistance, reduce the wearing and tearing of guide rail, also reduce vibration in the vertical direction when driving arm travels, and then can effectively reduce in process of the test because rubbing and vibrating the measuring error brought.
In technique scheme, the first deceleration sprocket wheel, the second drive sprocket are arranged on base plate by bearing seat, and drive motor is arranged on base plate by motor support base; Described base plate is positioned at wheel both sides and is evenly provided with three weight linear meter bearings, install weight linear meter in described weight linear meter bearing, it is leg-of-mutton balancing weight installing plate that the upper end of described weight linear meter is provided with cross section, and described balancing weight installing plate is provided with balancing weight.The design of balancing weight enables testing table simulate different loads experimental enviroment, is convenient to the wheel ground function analysis that testing table carries out under different loads effect.
In technique scheme, bearing seat, motor support base are provided with adjusting bolt, and adjusting bolt, for regulating driving chain or pulling the elasticity of chain, ensures moment stable delivery.
In technique scheme, control system comprises outer computer and is arranged on the switch board on the plate of soil box side, and switch board comprises cabinet, is arranged on the control circuit in cabinet and is arranged on the control panel of cabinet outside surface; Control panel is divided into master control region, drived control region and pulls control area three part, and every part is equipped with one group of pushbutton switch and instrument display screen; Control circuit comprises Drive and Control Circuit, pulls control circuit and ON-OFF control circuit, and the input end of ON-OFF control circuit is connected with the contact of pushbutton switch, and the output terminal of ON-OFF control circuit and Drive and Control Circuit or the input end pulling control circuit are connected.Drive and Control Circuit comprises the first relay, the first frequency converter and drive motor, wherein the control coil of the first relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the first frequency converter, and the output terminal of the first frequency converter controls drive motor; Pull control circuit comprise the second relay, the second frequency converter and pull motor, wherein the control coil of the second relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the second frequency converter, and the output terminal of the second frequency converter controls to pull motor.
In summary, motor is utilized to provide wheel driving force and drag, and realized the isoparametric control of driving force, travel speed, travel direction and slippage rate by frequency converter, by to test soil spray control soil moisture content, the factors such as research slippage rate, tire pressure, travel speed, load and soil moisture content are on the impact of off-road vehicle by performance, for further study to the mechanism of action on vehicle and ground.
In technique scheme, the drive motor of Drive and Control Circuit is connected with the emergency stop device being arranged on described walking guide rail two ends respectively with the motor that pulls pulling control circuit, emergency stop device comprises travel switch and the travel switch shifting block suitable with travel switch, travel switch is arranged on apart from longeron 0.5 ± 0.1m place on walking the first channel-section steel of guide rail or the second channel-section steel, and travel switch shifting block is arranged on driving arm.When the travel switch shifting block on driving arm contacts with travel switch, Drive and Control Circuit and pull control circuit and be in dissengaged positions, drive motor and pull motor stalling or reversion, when the travel switch shifting block on driving arm separates with travel switch, Drive and Control Circuit and pull control circuit and be in on-state, drive motor and pull motor and run well.
In technique scheme, the input interface of outer computer is connected with one group of data collecting card is pluggable, and described data collecting card and driving torque-speed probe, the signal output pulling moment of torsion-speed probe, perpendicular displacement sensor or pressure transducer group are connected; Described pressure transducer group is arranged on the inside of soil box body, is to be made up of 12 identical dynamic pressure transducers, can be used for measuring the pressure that in driving process, wheel produces ground.
After adopting structure of the present utility model, condition and the environmental factor of test are controlled, test figure and parameter measurement convenience, and measuring accuracy is high, and test repeatability is good, effectively can shorten the construction cycle of vehicle, accelerates research speed.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the schematic diagram of drive system in the utility model.
Fig. 3 is the schematic diagram pulling system in the utility model.
Fig. 4 is the structural representation of drive system in the utility model.
Fig. 5 is the structural representation pulling system in the utility model.
Fig. 6 is the structural representation of double card wheel apparatus in the utility model.
Fig. 7 is the structural representation of control panel in the utility model.
Fig. 8 drives in the utility model and pulls control system wiring diagram.
Fig. 9 is the utility model breaker in middle control circuit figure.
Figure 10 is the schematic diagram of data acquisition system (DAS) in the utility model.
Figure 11 is the structural representation of first, second truss in the utility model.
Figure 12 is the vertical view of Figure 11.
Figure 13 is the stereographic map of the utility model single-wheel soil slot test stand.
Figure 14 is the vertical view of Figure 12.
In figure: 1. pull motor, 101. first driving gears, 102. first reduction gearing, 103. second driving gears, 104. pull chain, 105. second reduction gearing, 2. drive motor, 201. first deceleration sprocket wheels, 202. driving chain, 203. second deceleration sprocket wheels, 204. first drive sprockets, 205. second drive sprockets, 3. driving arm, 301. weight linear meter bearings, 302. vertical guide stem bearings, 303. wheel stationary shaft, 304. wheel stationary shaft bearings, 305. balancing weight installing plates, 306. balancing weight, 4. walking guide rail, 401. guide rail holders, 5. soil box body, 6. pull moment of torsion-speed probe, 7. vertical guide stem, 8. wheel, 801. wheel rim, 802. tire, 803. wheel hub, 9. driving torque-speed probe, 10. base plate, 11. test soil, 13. pressure transducer groups, 14. perpendicular displacement sensors, 15. adjusting bolts, 16. bearing seats, 17. shaft couplings, 18. reinforcements, 19. linear bearings, 20. rollers, 21. first, second channel-section steel, 22. card wheel shafts, 23. card axle supports, 24. card wheels, 25. crossbeams, 26. longerons, 27. first columns, 28. curb girders, 29. auxiliary girders, 30. second pillars.
Embodiment
Embodiment one
The single-wheel soil slot test stand of the present embodiment, its structure is as Fig. 1, Figure 11, Figure 12, shown in Figure 13 and Figure 14, comprise soil box system, drive system, pull system, control system and data acquisition system (DAS), wherein soil box system forms primarily of soil box body 5 with along the walking guide rail 4 that soil box body 5 is arranged, soil box body 5 is rectangular body structure, it is built with test soil 11, the dimensional requirement of body structure is as follows: its length should be defined as 9 meters according to the requirement in the collection of steady testing phase data, width is defined as 1.5 meters according to the requirement of drive system, the degree of depth is defined as 0.8 meter, the impact of soil boundary effect on test can be reduced like this.The first truss is transversely furnished with in body structure, first truss comprises two crossbeams 25 and two longerons 26 and four first columns 27 that be arranged in parallel, crossbeam 25 connects to form closed framework with longeron 26 head and the tail, the corner of framework is provided with the first column 27 straight down, and between two first columns 27 of described framework one end, be also connected with two longerons 26, crossbeam 25 is provided with at least two reinforcements 18 straight down.The two ends, left and right of the first truss connect left and right second truss respectively, left and right second truss is all made up of three layers of rectangle rack, every layer of rectangle rack is fixedly connected with the first column 27 near a side of the first truss, another side is fixedly connected with the second column, and every layer of rectangle rack to be connected two curb girder 28 ends primarily of two curb girders 28 be oppositely arranged auxiliary girder 29 with one forms, auxiliary girder 29 and longeron 26 be arranged in parallel, curb girder 28 is fixedly connected with auxiliary girder 29 and longeron 26 head and the tail, and the second pillar 30 is vertically set on the junction of described curb girder 28 and auxiliary girder 29.First truss connects walking guide rail 4 by guide rail holder 401, walking guide rail 4 is made up of first, second channel-section steel 21, first channel-section steel 21 is arranged on a crossbeam 25 of the first truss by holder in opening mode inwardly, and the second channel-section steel 21 is arranged on another root crossbeam 25 of the first truss in opening mode inwardly by holder.In addition, the first grid-like component is equipped with at the top layer of left and right second truss, first grid-like component of left second truss is provided with the second reduction gearing 105 by bearing seat 16, first grid-like component of right second truss is provided with the first reduction gearing 102 and the second driving gear 103 by bearing seat 16, and the middle layer of right second truss is provided with the second grid-like component, second grid-like component is provided with motor support base, motor support base is installed and pulls motor 1.
The structure of drive system as shown in Figure 2 and Figure 4, comprise and being arranged on walking guide rail 4 and the driving arm 3 moved along walking guide rail 4, driving arm 3 is rectangular frame, its four corners are provided with roller 20, the side of rectangular frame is connected by the opening of one group of double card wheel apparatus and the first channel-section steel or the second channel-section steel 21, double card wheel apparatus comprises upper and lower two card wheels 24, one end of card wheel 24 stretches out card release wheel support, the periphery and first of card wheel support, the opening inwall of the second channel-section steel 21 matches, the other end of card wheel 24 is provided with card wheel shaft 22, card wheel shaft 22 is rotationally connected with in the axis hole of card axle support 23, (see figure 6) on the side that card axle support 23 is fixedly mounted on driving arm 3.In addition, perpendicular displacement sensor 14 is provided with outside the frame of rectangular frame, the probe of perpendicular displacement sensor 14 is towards the base plate 10 of drive system, and be provided with four linear bearings 19 at the scuncheon of rectangular frame, vertical guide stem 7 is provided with in each linear bearing 19, vertical guide stem 7 can linearly slide up and down by bearing 19, the lower end of four vertical guide stem 7 is all fixedly mounted on base plate 10 by vertical guide stem bearing 302, base plate 10 is shaped with groove, base plate 10 is positioned at groove both sides and is provided with wheel stationary shaft bearing 304, wheel stationary shaft bearing 304 is built with wheel stationary shaft 303, and wheel stationary shaft 303 can rotate in wheel stationary shaft bearing 304, wheel stationary shaft 303 is fixedly connected with the wheel 8 be arranged in base plate 10 groove, wheel 8 is by the wheel hub 803 be arranged on wheel stationary shaft 303, the wheel rim 801 be fixed on outside wheel hub 803 forms with the tire 802 be enclosed within wheel rim 801, wheel hub 803 adopts cross-species transferability, only need install the ring flange of corresponding tire 802 additional on the right side of wheel hub 803 during test, be convenient for changing different tires 802 to test.Wheel stationary shaft 303 is socketed the second deceleration sprocket wheel 203, second deceleration sprocket wheel 203 is connected with the second drive sprocket 205 by driving chain 202, second drive sprocket 205 is connected with the first deceleration sprocket wheel 201, first deceleration sprocket wheel 201 is connected with the first drive sprocket 204 be arranged on drive motor 2 output shaft by driving chain 202, between first deceleration sprocket wheel 201 and described second drive sprocket 205, driving torque-speed probe 9(is set by shaft coupling 17 and driving torque-speed probe 9 is arranged between the first deceleration sprocket wheel 201 and the second drive sprocket 205, be positioned at the middle part of moment transmittance process, can Measurement accuracy transmit moment of torsion and speed revolution value).The power transmission of drive system as shown in Figure 3, driving force adopts the YVF132M-4-7.5KW motor of section Nanjing from drive motor 2(, rated voltage is 380V, rated power is 7.5KW, nominal torque is 47.7Nm) send, double reduction through reduction gearing is delivered on wheel 8, and to drive wheel 8 to rotate, and then the wheel 8 of simulation offroad vehicle travels at soft terrain.
Base plate 10 is positioned at wheel 8 both sides and is evenly provided with three weight linear meter bearings 301, in weight linear meter bearing 301, weight linear meter is installed, it is leg-of-mutton balancing weight installing plate 305 that the upper end of weight linear meter is provided with cross section, and balancing weight installing plate 305 is provided with balancing weight 306, for simulating different loads experimental enviroment.
Pull system as shown in Figure 5, comprise and pull motor 1, the output shaft pulling motor 1 be equipped with the first driving gear 101 and pull moment of torsion-speed probe 6, first driving gear 101 is connected with the first reduction gearing 102 by pulling chain 104, first reduction gearing 102 is connected with the second driving gear 103 by pulling chain 104, and the second driving gear 103 is by pulling chain 104 and driving arm 3 is connected with the second reduction gearing 105.The power transmission pulling system has both direction, as shown in Figure 3, when pulling the YVF100L-4-3KW motor of section in motor 1(employing Nanjing, rated voltage is 380V, and rated power is 3KW, and nominal torque is 19.0Nm) provide to the right the power that pulls (resistance) time, the power that pulls is delivered to driving arm 3 through the first reduction gearing 102 and the second driving gear 103, be applied on wheel 8 through vertical guide stem 7, base plate 10 again, for wheel 8 provides resistance to the right, limiting wheel 8 is to left movement; When pull motor 1 provide left pull power time, the power that pulls is delivered to driving arm 3 through the first reduction gearing 102, second driving gear 103 and the second reduction gearing 105, be applied on wheel 8 through vertical guide stem 7, base plate 10 again, for wheel 8 provides resistance left, limiting wheel 8 moves right, and then simulates the tractive resistance be subject in wheel 8 driving process.
In addition, deceleration sprocket/gear, drive sprocket/gear are all fixedly mounted by bearing seat 16, it is also all fixedly mounted by motor support base that drive motor 2/ pulls motor 1, bearing seat 16, motor support base are provided with adjusting bolt 15, adjusting bolt 15, for regulating driving chain 202 or pulling the elasticity of chain 104, ensures moment stable delivery.
Control system comprises outer computer and is arranged on the switch board on soil box body 5 side plate, and switch board comprises cabinet, is arranged on the control circuit in cabinet and is arranged on the control panel of cabinet outside surface.Control panel is divided into master control region, drived control region and pull control area three part, the operation of the whole testing table of master control Region control, comprise start button, scram button, reset button and pull electric moter voltage display screen and drive motor voltage display screen, wherein start button is the main switch of whole control system, be shaped with when it is shown as beginning, other buttons just can operate, scram button is the safety switch controlling drive motor 2 and pull motor 1, when breaking down or need to stop, press the stall that scram button just can realize two motors, control system is made to have emergency braking function, ensure that safety.Reset button can control drive motor 2 and pull motor 1 to run, and makes drive system get back to initial position.Pull the operation that control area major control pulls motor 1, comprise start button one, stop button one, forwarding button one, back one and speed governing knob one and speed display screen, start button one controls the loop pulling motor 1, stop button one is pressed rear control and is pulled motor 1 stall, forwarding button one controls to pull motor 1 and rotates forward, driving arm 3 can be driven after pressing to move right, back one controls to pull motor 1 and reverses, driving arm 3 can be driven after pressing to left movement, speed governing knob one is the knob controlling to pull motor 1 rotating speed, and only have when forwarding button one or one of them connection of back one, speed governing knob one could perform, speed display screen is display present speed.The operation of drived control region major control drive motor 2, comprise start button two, stop button two, forwarding button two, back two and speed governing knob two and rotating speed display screen, start button two controls the loop of drive motor 2, the stall of rear control drive motor 2 pressed by stop button two, forwarding button two controls drive motor 2 and rotates forward, driving arm 3 can be driven after pressing to move right, back two controls drive motor 2 and reverses, driving arm 3 can be driven after pressing to left movement, speed governing knob two is the knob controlling drive motor 2 rotating speed, and only have when forwarding button two or one of them connection of back two, speed governing knob two could perform, turn the (see figure 7) that degree display screen is the current rotating speed of display driver motor 2.
Control circuit as shown in Figure 8 and Figure 9, comprise Drive and Control Circuit, pull control circuit and ON-OFF control circuit, the input end of ON-OFF control circuit is connected with the contact of pushbutton switch, and the output terminal of ON-OFF control circuit and Drive and Control Circuit or the input end pulling control circuit are connected.Drive and Control Circuit comprises the first relay, the first frequency converter (A100-7.5KW) and drive motor 2, wherein the control coil of the first relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the first frequency converter, and the output terminal of the first frequency converter controls drive motor 2; Pull control circuit comprise the second relay, the second frequency converter (A100-3.7KW) and pull motor 1, wherein the control coil of the second relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the second frequency converter, and the output terminal of the second frequency converter controls to pull motor 1.The frequency converter of such pushbutton switch by corresponding control circuit and Control motor are installed, and then the rotating realizing motor controls.In addition, the drive motor 2 of Drive and Control Circuit is connected with the emergency stop device being arranged on guide rail 4 two ends of walking respectively with the motor 1 that pulls pulling control circuit, emergency stop device comprises travel switch and the travel switch shifting block suitable with travel switch, travel switch is arranged on apart from longeron 260.5 ± 0.1m place on walking the first channel-section steel of guide rail 4 or the second channel-section steel 21, and travel switch shifting block is arranged on driving arm 3.When the travel switch shifting block on driving arm 3 contacts with travel switch, Drive and Control Circuit and pull control circuit and be in dissengaged positions, drive motor 2 and pull motor 1 stall or reversion, when the travel switch shifting block on driving arm 3 separates with travel switch, Drive and Control Circuit and pull control circuit and be in on-state, drive motor 2 and pull motor 1 and run well.This design can be cut off in time and pull and driving circuit, reduces the harm that maloperation brings.
As shown in Figure 10, data acquisition system (DAS) comprises driving torque-speed probe 9, pulls moment of torsion-speed probe 6, perpendicular displacement sensor 14 and pressure transducer group 13, driving torque-speed probe 9, the signal output pulling moment of torsion-speed probe 6, perpendicular displacement sensor 14 or pressure transducer group 13 are connected with data collecting card, data collecting card is connected with the input interface of outer computer is pluggable, realizes the precise acquisition of experimental data, convenient storage display and processing capacity.Wherein pressure transducer group 13 is made up of 12 identical dynamic pressure transducers, is arranged on the inside of soil box body 5.(pulling) moment of torsion-speed probe is driven to comprise dynamic torque sensor and speed probe, dynamic torque sensor is different from static torque sensor, utilize to adopt electric measurement technique of strain gage, elastic shaft forms strain bridge, again to the electric signal that strain bridge provides power supply to record this elastic shaft to be turned round, then this strain signal is amplified, through overvoltage/frequency conversion, become the frequency signal be directly proportional to twisting strain, dynamic torque sensor can be used to measure the driving torque pulling motor 1 and drive motor 2 in systems in which, speed probe is then used for measuring wheel 8 rotating speed and travel speed, pressure and displacement transducer is then used for measured surface pressure distribution and sinkage respectively.The in-built data acquisition of computing machine, storage related software-LabView software, Labview software (LaboratoryVirtualinstrumentEngineeringWorkbench) is a kind of development environment of patterned programming language, it widely by industry member, academia and research laboratory accept, be considered as data acquisition and the instrument control software of a standard.Utilize Labview software programming data acquisition program, effectively experimental data can be stored, show.
During to being tested by property of offroad vehicle, control system controls drive motor 2 and works, for drive system provides enough driving forces under the effect of drive motor 2, driving force band motor car wheel 8 rotates, thus drive base plate 10 to travel forward in test soil 11, driving force is delivered to driving arm 3 by vertical guide stem 7 by base plate 10, and driving arm 3 rolls in guide rail, realizes the function of simulating wheel 8 rectilinear motion.While driving arm 3 rolls, control system controls to pull motor 1 and works as driving arm 3 provides sufficient pulling force, pull motor 1 and apply reacting force by the chain 104 pairs of driving arms 3 that pull be linked on driving arm 3, and then the process that simulating wheel 8 trackslips, in process of the test the travel direction of wheel 8 and travel speed variable, and can the change of simulating wheel 8 slippage rate in 0 ~ 100% scope.Wheel 8 slippage rate is the key factor affecting vehicles dynamic performance, and driving torque, wheel 8 sinkage, draw bar load are all relevant with slippage rate, and the mechanics parameter therefore obtained under various slippage rate is the key that trafficability can be tested.In drive system with while pulling system works, perpendicular displacement sensor 14, pressure transducer group 13, driving torque biography-wheel speed sensors and pull the data of moment of torsion-speed probe 6 Real-time Collection result of performance test, and data are passed back in computing machine by data collecting card, undertaken storing and showing by the Labview software of computing machine, for verifying that the wheel ground coupling model set up provides basic data.In addition in process of the test, by controlling the water cut of soil to the watering of test soil 11, measure after soil parameters, according to the stress distribution of the known soil of formula and the basic parameter of sinkage coupling model, therefore obtaining these parameters, to revise model even further to verification model most important.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (10)
1. a single-wheel soil slot test stand, is characterized in that: comprise soil box system, drive system, pull system, control system and data acquisition system (DAS), and wherein said soil box system forms primarily of soil box body with along the walking guide rail that soil box body is arranged, described drive system comprises the driving arm being arranged on the guide rail movement and walk in edge on walking guide rail, described driving arm is rectangular frame, perpendicular displacement sensor is provided with outside the frame of described rectangular frame, the scuncheon of described rectangular frame is provided with several linear bearings, in described linear bearing, vertical guide stem is set, described vertical guide stem can linearly slide up and down by bearing, the lower end of described vertical guide stem is fixedly mounted on base plate by vertical guide stem bearing, described base plate is shaped with groove, described base plate is positioned at groove both sides and is provided with wheel stationary shaft bearing, described wheel stationary shaft bearing is built with wheel stationary shaft, and described wheel stationary shaft can rotate in wheel stationary shaft bearing, described wheel stationary shaft is fixedly connected with the wheel be arranged in bottom plate groove, described wheel stationary shaft is socketed the second deceleration sprocket wheel, described second deceleration sprocket wheel is connected with the second drive sprocket by driving chain, described second drive sprocket is connected with the first deceleration sprocket wheel, described first deceleration sprocket wheel is connected with the first drive sprocket be arranged on drive motor output shaft by driving chain, between described first deceleration sprocket wheel and described second drive sprocket, driving torque-speed probe is set by shaft coupling, the described system that pulls comprises and pulls motor, the described output shaft pulling motor be provided with the first driving gear and pull moment of torsion-speed probe, described first driving gear is connected with the first reduction gearing by pulling chain, described first reduction gearing is connected with the second driving gear by pulling chain, and described second driving gear is by pulling chain and driving arm is connected with the second reduction gearing.
2. single-wheel soil slot test stand according to claim 1, is characterized in that: described soil box body is rectangular body structure, and it is built with test soil; The first truss is transversely furnished with in described body structure, described first truss comprises two crossbeams and two longerons and four first columns that be arranged in parallel, described crossbeam and longeron head and the tail connect to form closed framework, the corner of described framework is provided with the first column straight down, and between two first columns of described framework one end, be also connected with at least two longerons, described crossbeam is provided with at least two reinforcements straight down; The two ends, left and right of described first truss connect left and right second truss respectively, described left and right second truss includes at least two-layer rectangle rack, described rectangle rack is fixedly connected with the first column near a side of the first truss, another side is fixedly connected with the second column, and described every layer of rectangle rack is connected the auxiliary girder composition of two curb girder ends with one primarily of two curb girders be oppositely arranged, described auxiliary girder and longeron be arranged in parallel, described curb girder is fixedly connected with auxiliary girder and longeron head and the tail, and described second pillar is vertically set on the junction of described curb girder and auxiliary girder.
3. single-wheel soil slot test stand according to claim 2, it is characterized in that: described first truss is provided with walking guide rail, described walking guide rail is made up of first, second channel-section steel, described first channel-section steel opening is arranged on a crossbeam of the first truss inwardly, described second channel-section steel opening is arranged on another root crossbeam of the first truss inwardly, and the opening of first, second channel-section steel described is connected by the side of one group of double card wheel apparatus and driving arm; The top layer of described left and right second truss is equipped with the first grid-like component, described first grid-like component is provided with bearing seat, described bearing seat is installed the first reduction gearing, the second reduction gearing or the second driving gear; The middle layer of described right second truss is provided with the second grid-like component, and described second grid-like component is provided with motor support base, described motor support base is installed and pulls motor.
4. single-wheel soil slot test stand according to claim 3, it is characterized in that: described double card wheel apparatus comprises upper and lower two card wheels, described card wheel one end stretch out card release wheel support, the described card wheel periphery of support and the opening inwall of first, second channel-section steel match, the other end of described card wheel is provided with card wheel shaft, described card wheel shaft is rotationally connected with in the axis hole of card axle support, described card axle support is fixedly mounted on the side of driving arm, and four edges of described driving arm are provided with roller.
5. single-wheel soil slot test stand according to claim 1, is characterized in that: described first deceleration sprocket wheel, the second drive sprocket are arranged on base plate by bearing seat, and described drive motor is arranged on base plate by motor support base; Described base plate is positioned at wheel both sides and is evenly provided with three weight linear meter bearings, install weight linear meter in described weight linear meter bearing, it is leg-of-mutton balancing weight installing plate that the upper end of described weight linear meter is provided with cross section, and described balancing weight installing plate is provided with balancing weight.
6. single-wheel soil slot test stand according to claim 3 or 6, is characterized in that: described bearing seat, motor support base are provided with for regulating driving chain or pulling the adjusting bolt of chain elasticity.
7. single-wheel soil slot test stand according to claim 1, it is characterized in that: described control system comprises outer computer and is arranged on the switch board on the plate of soil box side, described switch board comprises cabinet, is arranged on the control circuit in cabinet and is arranged on the control panel of cabinet outside surface; Described control panel is divided into master control region, drived control region and pulls control area three part, and every part is equipped with one group of pushbutton switch and instrument display screen; Described control circuit comprises Drive and Control Circuit, pulls control circuit and ON-OFF control circuit, the input end of described ON-OFF control circuit is connected with the contact of pushbutton switch, and the output terminal of described ON-OFF control circuit and Drive and Control Circuit or the input end pulling control circuit are connected.
8. single-wheel soil slot test stand according to claim 7, it is characterized in that: described Drive and Control Circuit comprises the first relay, the first frequency converter and drive motor, the control coil of wherein said first relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the first frequency converter, and the output terminal of described first frequency converter controls drive motor; The described control circuit that pulls comprises the second relay, the second frequency converter and pulls motor, the control coil of wherein said second relay connects the output port of ON-OFF control circuit, its normally opened contact connects the enabling signal input end of the second frequency converter, and the output terminal of described second frequency converter controls to pull motor.
9. single-wheel soil slot test stand according to claim 8, it is characterized in that: the drive motor of described Drive and Control Circuit is connected with the emergency stop device being arranged on described walking guide rail two ends respectively with the motor that pulls pulling control circuit, described emergency stop device comprises travel switch and the travel switch shifting block suitable with travel switch, described travel switch is arranged on apart from longeron 0.5 ± 0.1m place on walking the first channel-section steel of guide rail or the second channel-section steel, and described travel switch shifting block is arranged on driving arm.
10. single-wheel soil slot test stand according to claim 7, it is characterized in that: the input interface of described outer computer is connected with one group of data collecting card is pluggable, described data collecting card and driving torque-speed probe, the signal output pulling moment of torsion-speed probe, perpendicular displacement sensor or pressure transducer group are connected; Described pressure transducer group is arranged on the inside of soil box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566266.2U CN204882086U (en) | 2015-07-30 | 2015-07-30 | Single round soil box test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566266.2U CN204882086U (en) | 2015-07-30 | 2015-07-30 | Single round soil box test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204882086U true CN204882086U (en) | 2015-12-16 |
Family
ID=54826448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520566266.2U Withdrawn - After Issue CN204882086U (en) | 2015-07-30 | 2015-07-30 | Single round soil box test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204882086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043788A (en) * | 2015-07-30 | 2015-11-11 | 南京农业大学 | Single-wheel soil bin test stand |
| CN106769581A (en) * | 2017-01-04 | 2017-05-31 | 西华大学 | A kind of Multifunctional agricultural implement frictional wear test device |
-
2015
- 2015-07-30 CN CN201520566266.2U patent/CN204882086U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043788A (en) * | 2015-07-30 | 2015-11-11 | 南京农业大学 | Single-wheel soil bin test stand |
| CN105043788B (en) * | 2015-07-30 | 2018-03-06 | 南京农业大学 | A kind of single-wheel soil slot test stand |
| CN106769581A (en) * | 2017-01-04 | 2017-05-31 | 西华大学 | A kind of Multifunctional agricultural implement frictional wear test device |
| CN106769581B (en) * | 2017-01-04 | 2023-06-16 | 西华大学 | Multifunctional agricultural implement frictional wear test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20180306 |