CN102798500A - System and method for testing barycenter of road roller steel wheel and vibration amplitude uniformity of road roller steel wheel - Google Patents
System and method for testing barycenter of road roller steel wheel and vibration amplitude uniformity of road roller steel wheel Download PDFInfo
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- CN102798500A CN102798500A CN201210294543XA CN201210294543A CN102798500A CN 102798500 A CN102798500 A CN 102798500A CN 201210294543X A CN201210294543X A CN 201210294543XA CN 201210294543 A CN201210294543 A CN 201210294543A CN 102798500 A CN102798500 A CN 102798500A
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Abstract
The invention discloses a system and a method for testing barycenter of a road roller steel wheel and vibration amplitude uniformity of the road roller steel wheel. The system comprises a steel wheel barycenter testing system, a steel wheel vibration amplitude uniformity testing system, a hydraulic system and a control system, wherein the steel wheel barycenter testing system comprises a leveling oil cylinder, a force transducer, a testing platform, a supporting wheel, a horizontal measuring instrument and an angle sensor; the steel wheel vibration amplitude uniformity testing system comprises a front frame support and an acceleration sensor; and the control system comprises a microprocessor module, an analog/digital (A/D) conversion circuit module and human-computer interaction equipment. The method comprises the following steps: testing the barycenter position of the road roller steel wheel: installing, leveling, acquiring angle and pressure signals, and determining and displaying the barycenter position of the road roller steel wheel; and testing the vibration amplitude uniformity of the road roller steel wheel: fixing, acquiring an acceleration signal, and determining and displaying the vibration amplitude deviation delta of the road roller steel wheel. The system and the method are novel and reasonable in design, convenient and fast in use and operation, high in testing efficiency, high in precision, high in practicability and high in popularization and application value.
Description
Technical field
The invention belongs to mechanical engineering technical field, more particularly, to a kind of road roller steel wheel barycenter and amplitude uniformity test system and method.
Background technology
The amplitude of vibrated roller is the Key Performance Indicator of road roller, it directly influences the compaction quality of road roller road pavement, the amplitude for taking turns cross direction is uniformly the most basic requirement for ensureing compacting uniformity, when vibrating wheels the right and left amplitude excursion is larger, the linear driving performance of road roller can be also influenceed.By experimental study, the skew of vibrating wheels barycenter is to influence the one of the main reasons of amplitude of road roller uniformity, and due to reasons such as manufacture machining accuracies, steel wheel barycenter can not possibly be completely in geometric center, and in order to carry out dynamics research to road roller, it must be understood that the exact position of steel wheel barycenter and its amplitude of main positions.Prior art is typically after final assembly is good, the amplitude uniformity of steel wheel to be measured by field test, specific method is：By hanging and with steel wheel rubber tyre support road roller the steel wheel of road roller steel wheel, it is in road roller and is vibrated without outer load state, measure the amplitude of steel wheel.When occur amplitude it is uneven when, it is difficult to realize the uniform of amplitude by adjusting steel wheel centroid position, and the process of field test measurement amplitude of road roller is more complicated.In the prior art, also without can before final assembly directly detection road roller steel wheel barycenter and amplitude device and method.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned deficiency of the prior art, there is provided a kind of simple in construction, small volume, floor space small, novel in design reasonable, realization is convenient, use the low road roller steel wheel barycenter of simple operation, cost of implementation and amplitude uniformity test system.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of road roller steel wheel barycenter and amplitude uniformity test system, the road roller steel wheel is arranged on front frame of road roller by vibrating shaft and is fixedly connected by bolt with front frame of road roller, vibrating motor for driving vibration shaft vibration is installed, the output shaft of the vibrating motor is connected with vibrating shaft on the front frame of road roller；It is characterized in that：The road roller steel wheel barycenter and amplitude uniformity test system include steel wheel barycenter test system, steel wheel amplitude uniformity test system and hydraulic system, and are analyzed and processed and be used for the control system being controlled to hydraulic system for the test data to steel wheel barycenter test system and steel wheel amplitude uniformity test system；The steel wheel barycenter test system includes three leveling cyclinders, three force cells and the test platform installed in three force cell tops for being arranged on three leveling cyclinder piston rod tops are corresponded to respectively, the top of the test platform is symmetrically arranged with two support wheels for being used to support road roller steel wheel, the top of the test platform is provided with the horizontal measuring instrument for carrying out leveling to test platform and the angular transducer measured for the rotational angle to road roller steel wheel, three leveling cyclinders and three force cells ABC triangular in shape are laid, the triangle ABC is isosceles triangle or equilateral triangle；The hydraulic system is connected with vibrating motor and leveling cyclinder and for being that vibrating motor and leveling cyclinder provide hydraulic power, the steel wheel amplitude uniformity test system includes being used to front frame of road roller is supported on into the front frame bearing on its top and multiple acceleration transducers in road roller steel wheel and for detecting the vibration acceleration at road roller steel wheel diverse location, and multiple acceleration transducers are equably laid in the road roller steel wheel along the axial direction of the road roller steel wheel；The control system includes microprocessor module and the A/D conversion circuit modules connected with microprocessor module and human-computer interaction device, multiple force cells, the angular transducer and multiple acceleration transducers connect with the A/D conversion circuit modules, and the hydraulic system connects with the microprocessor module.
Above-mentioned road roller steel wheel barycenter and amplitude uniformity test system, it is characterised in that：The quantity of the acceleration transducer is three or five.
Above-mentioned road roller steel wheel barycenter and amplitude uniformity test system, it is characterised in that：The damping block being provided with damping block supporting plate, the damping block supporting plate between the road roller steel wheel and the damping block supporting plate is installed on the front frame of road roller.
Above-mentioned road roller steel wheel barycenter and amplitude uniformity test system, it is characterised in that：The hydraulic system includes supply reservoir, oil filter and the hydraulic pump being sequentially connected by oil pipe, and four magnetic valves being connected by oil pipe with hydraulic pump, wherein three magnetic valves correspond to be connected with three leveling cyclinders respectively, another magnetic valve is connected with vibrating motor, overflow valve is connected with the oil pipe for connecting the oil filter and hydraulic pump, the overflow valve is connected by oil pipe with overflow fuel tank；The hydraulic pump and four magnetic valves connect with the microprocessor module.
Above-mentioned road roller steel wheel barycenter and amplitude uniformity test system, it is characterised in that：The magnetic valve is three position four-way electromagnetic valve.
Above-mentioned road roller steel wheel barycenter and amplitude uniformity test system, it is characterised in that：The human-computer interaction device is touch LCD screen or computer.
Present invention also offers a kind of data processing speed is fast, data-handling capacity is strong, precision is high, practical road roller steel wheel barycenter and amplitude uniformity method of testing, it is characterised in that this method comprises the following steps：
Step 1: road roller steel wheel centroid position is tested, detailed process is as follows：
Step 101, installation and leveling：First, the front frame of road roller connected as one, road roller steel wheel and vibrating motor are placed on front frame holder top so that front frame of road roller is supported on the front frame holder top, and causes the road roller steel wheel to be supported on two support wheel tops；Then, it will be backed out for the bolt for being fixedly connected with road roller steel wheel and front frame of road roller so that the road roller steel wheel can be rotated on the vibrating shaft；Then, leveling cyclinder control parameter is inputted on the human-computer interaction device, microprocessor module receives leveling cyclinder control parameter and the control to three leveling cyclinders is realized by three magnetic valves for controlling hydraulic pump and being connected with three leveling cyclinders so that the test platform is positioned horizontally in the top of multiple force cells；
The collection of step 102, angle and pressure signal：First, A/D conversions are carried out to the pressure signal detected by three force cells as the A/D conversion circuit modules, obtains three pressure value FA'、FB' and FC', by microprocessor module to three pressure value F after the processing of A/D conversion circuit modulesA'、FB' and FC' be acquired；Then, the road roller steel wheel is turned over into θ angles manually, pressure signal detected by the rotational angle signal of the road roller steel wheel detected as the A/D conversion circuit modules to angular transducer and three force cells carries out A/D conversions, obtains angle value θ and three pressure value FA、FBAnd FC, by microprocessor module to the angle value θ and three pressure value F after the processing of A/D conversion circuit modulesA、FBAnd FCIt is acquired；
The determination of step 103, road roller steel wheel centroid position：The microprocessor module calls pressure and angle-data processing module to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, the centroid position of the road roller steel wheel is obtained；
The display of step 104, road roller steel wheel centroid position：The microprocessor module sends display control signal to human-computer interaction device, and display is synchronized to the road roller steel wheel centroid position determined in step 103 by human-computer interaction device；
Step 2: road roller steel wheel amplitude uniformity is tested, detailed process is as follows：
Step 201, fixation：It will be screwed on for the bolt for being fixedly connected with road roller steel wheel and front frame of road roller so that the road roller steel wheel is fixedly connected on the front frame of road roller；
The collection of step 202, acceleration signal：Road roller steel wheel vibration control parameter is inputted on the human-computer interaction device, microprocessor module receives road roller steel wheel vibration control parameter and realizes the control vibrated to the road roller steel wheel by the magnetic valve for controlling hydraulic pump and being connected with the vibrating motor；Meanwhile, the vibration acceleration signal of the road roller steel wheel diverse location detected by the A/D conversion circuit modules to multiple acceleration transducers carries out A/D conversions, obtains multiple acceleration magnitude a1, a2..., ai, then by microprocessor module to the acceleration magnitude a after the processing of A/D conversion circuit modules1, a2..., aiIt is acquired, wherein, i is the quantity of the acceleration transducer；
The determination of step 203, road roller steel wheel amplitude excursion δ：The microprocessor module calls acceleration information processing module to multiple acceleration magnitude a for being collected1, a2..., aiComprehensive analysis processing is carried out, the road roller steel wheel amplitude excursion δ is obtained；
The display of step 204, road roller steel wheel amplitude excursion δ：The microprocessor module sends display control signal to human-computer interaction device, and display is synchronized to the road roller steel wheel amplitude excursion δ determined in step 203 by human-computer interaction device.
Above-mentioned method, it is characterised in that：Microprocessor module described in step 103 calls pressure and angle-data processing module to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, its integrated treatment analysis process comprises the following steps：
Step 1031, set up rectangular coordinate system in space：The microprocessor module is using the midpoint of the triangle ABC bases BC as the origin of coordinates, and using the triangle ABC bases BC as X-axis, using a height of Y-axis perpendicular to the triangle ABC bases BC, using cross the origin of coordinates and where the triangle ABC plane straight line as Z axis, set up rectangular coordinate system in space；
Step 1032, the microprocessor module call the pressure and angle-data processing module and according to formula：The road roller steel wheel is turned over into the force cell before θ angles to detect and pressure value F through processingA', and the road roller steel wheel turns over that the angular transducer after θ angles is detected and the angle value θ through processing and three force cells are detected and the pressure value F through processingA、FBAnd FCBe converted to road roller steel wheel centroid position coordinate（Xg,Yg, Zg）, wherein, H is the height of the isosceles triangle or the equilateral triangle, FA' the pressure value obtained after the pressure signal that force cell of the θ angles anteposition at the triangle ABC summits A detect is handled through the A/D conversion circuit modules is turned over by the road roller steel wheel, θ is the angle that the road roller steel wheel is turned over and is the angle value that angular transducer institute detection angles value is obtained after A/D conversion circuit modules processing, FA、FBAnd FCRespectively described road roller steel wheel, which is turned over, is located at three pressure values that the pressure signal that is detected of three force cells that described triangle ABC summits A, B and C locate is obtained after A/D conversion circuit modules processing after θ angles.
Above-mentioned method, it is characterised in that：Microprocessor module described in step 203 calls acceleration information processing module to multiple acceleration magnitude a for being collected1, a2..., aiCarry out comprehensive analysis processing process be：The microprocessor module calls the acceleration information processing module and according to formula Multiple acceleration transducers are detected and the acceleration signal through processing is converted to road roller steel wheel amplitude excursion δ, wherein, max (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn maximum, min (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn minimum value, AVG (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiAverage value.
Above-mentioned method, it is characterised in that：The value of the i is 3 or 5.
The present invention has advantages below compared with prior art：
1st, the overall structure of road roller steel wheel barycenter of the present invention and amplitude uniformity test system is simple, and small volume, floor space is small, road roller steel wheel barycenter and amplitude uniformity can be tested in any place, novel in design reasonable, and it is convenient to realize.
2nd, use simple operation of the invention, road roller steel wheel barycenter and amplitude uniformity testing efficiency are high, intuitive display result.
3rd, the present invention can directly detect road roller steel wheel barycenter and amplitude uniformity before road roller final assembly, can be accurately known that the exact position of road roller steel wheel barycenter and its amplitude of main positions, convenient to carry out dynamics research to road roller.
4th, the present invention's is practical, and cost of implementation is low, helps to propose corrective measure, and then improves the operation quality of road roller, and using effect is good, and application value is high.
In summary, of the invention novel in design reasonable, it is convenient to realize, using simple operation, and road roller steel wheel barycenter and amplitude uniformity testing efficiency height, precision are high, and practical, cost of implementation is low, and using effect is good, application value height.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the overall structure diagram of road roller steel wheel barycenter of the present invention and amplitude uniformity test system.
Fig. 2 is the structural representation of steel wheel barycenter test system of the present invention and steel wheel amplitude uniformity test system.
Fig. 3 is Fig. 2 left view.
Fig. 4 is present hydraulic system and the annexation schematic diagram with vibrating motor and leveling cyclinder.
Fig. 5 is control system of the present invention and the annexation schematic diagram of other each parts.
Fig. 6 is road roller steel wheel barycenter of the present invention and the method flow diagram of amplitude uniformity method of testing.
Description of reference numerals:
1-leveling cyclinder；2-force cell；3-test platform；
4-horizontal measuring instrument；5-angular transducer；6-support wheel；
7-front frame bearing；8-front frame of road roller；9-damping block；
10-road roller steel wheel；11-acceleration transducer；12-vibrating motor；
13-damping block supporting plate；14-microprocessor module；15-A/D conversion circuit modules；
16-human-computer interaction device；17-hydraulic system；18-supply reservoir；
19-oil filter；20-hydraulic pump；21-magnetic valve；
22-overflow valve；23-overflow fuel tank.
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, road roller steel wheel barycenter of the present invention and amplitude uniformity test system, the road roller steel wheel 10 is arranged on front frame of road roller 8 by vibrating shaft and is fixedly connected by bolt with front frame of road roller 8, vibrating motor 12 for driving vibration shaft vibration is installed, the output shaft of the vibrating motor 12 is connected with vibrating shaft on the front frame of road roller 8；The present invention includes steel wheel barycenter test system, steel wheel amplitude uniformity test system and hydraulic system 17, and is analyzed and processed and be used for the control system being controlled to hydraulic system 17 for the test data to steel wheel barycenter test system and steel wheel amplitude uniformity test system；The steel wheel barycenter test system includes three leveling cyclinders 1, three force cells 2 and the test platform 3 installed in three tops of force cell 2 for being arranged on three piston rod tops of leveling cyclinder 1 are corresponded to respectively, the top of the test platform 3 is symmetrically arranged with two support wheels 6 for being used to support road roller steel wheel 10, the top of the test platform 3 is provided with the horizontal measuring instrument 4 for carrying out leveling to test platform 3 and the angular transducer 5 measured for the rotational angle to road roller steel wheel 10, three leveling cyclinders 1 and three force cells 2 ABC triangular in shape are laid, the triangle ABC is isosceles triangle or equilateral triangle；The hydraulic system 17 is connected with vibrating motor 12 and leveling cyclinder 1 and for being that vibrating motor 12 and leveling cyclinder 1 provide hydraulic power, the steel wheel amplitude uniformity test system includes being used to front frame of road roller 8 is supported on into the front frame bearing 7 on its top and multiple acceleration transducers 11 in road roller steel wheel 10 and for detecting the vibration acceleration at the diverse location of road roller steel wheel 10, and multiple acceleration transducers 11 are equably laid in the road roller steel wheel 10 along the axial direction of the road roller steel wheel 10；The control system includes microprocessor module 14 and the A/D conversion circuit modules 15 connected with microprocessor module 14 and human-computer interaction device 16, multiple force cells 2, the angular transducer 5 and multiple acceleration transducers 11 connect with the A/D conversion circuit modules 15, and the hydraulic system 17 connects with the microprocessor module 14.
In the present embodiment, the quantity of the acceleration transducer 11 is three or five.The damping block 9 being provided with damping block supporting plate 13, the damping block supporting plate 13 between the road roller steel wheel 10 and the damping block supporting plate 13 is installed on the front frame of road roller 8.
With reference to Fig. 4, in the present embodiment, the hydraulic system 17 includes supply reservoir 18, oil filter 19 and the hydraulic pump 20 being sequentially connected by oil pipe, and four magnetic valves 21 being connected by oil pipe with hydraulic pump 20, wherein three magnetic valves 21 correspond to be connected with three leveling cyclinders 1 respectively, another magnetic valve 21 is connected with vibrating motor 12, connects the oil filter 19 with being connected with overflow valve 22 on the oil pipe of hydraulic pump 20, the overflow valve 22 is connected by oil pipe with overflow fuel tank 23；The hydraulic pump 20 and four magnetic valves 21 connect with the microprocessor module 14.
In the present embodiment, the magnetic valve 21 is three position four-way electromagnetic valve.The input port of three position four-way electromagnetic valve is connected by oil pipe with the delivery outlet of the hydraulic pump 20, when three position four-way electromagnetic valve is connected with the leveling cyclinder 1, two delivery outlets of three position four-way electromagnetic valve are connected by oil pipe correspondence with the oil inlet and oil return opening of the leveling cyclinder 1 respectively；When three position four-way electromagnetic valve is connected with the vibrating motor 12, two delivery outlets of three position four-way electromagnetic valve are connected by oil pipe correspondence with the oil inlet and oil return opening of the vibrating motor 12 respectively.
In the present embodiment, the human-computer interaction device 16 is touch LCD screen or computer.
With reference to Fig. 6, road roller steel wheel barycenter of the present invention and amplitude uniformity method of testing comprise the following steps：
Step 1: the centroid position of road roller steel wheel 10 is tested, detailed process is as follows：
Step 101, installation and leveling：First, the front frame of road roller 8 connected as one, road roller steel wheel 10 and vibrating motor 12 are placed on the top of front frame bearing 7, so that front frame of road roller 8 is supported on the top of front frame bearing 7, and the road roller steel wheel 10 is caused to be supported on two tops of support wheel 6；Then, it will be backed out for the bolt for being fixedly connected with road roller steel wheel 10 and front frame of road roller 8 so that the road roller steel wheel 10 can be rotated on the vibrating shaft；Then, the control parameter of leveling cyclinder 1 is inputted on the human-computer interaction device 16, microprocessor module 14 receives the control parameter of leveling cyclinder 1 and by controlling hydraulic pump 20 and realizing the control to three leveling cyclinders 1 with three magnetic valves 21 that three leveling cyclinders 1 are connected so that the test platform 3 is positioned horizontally in the top of multiple force cells 2；Because the top of the test platform 3 is provided with the horizontal measuring instrument 4 for carrying out leveling to test platform 3, therefore, can be by the horizontality of test platform 3 described in the data artificial judgment shown by horizontal measuring instrument 4, when operating personnel are not enough satisfied with to horizontality, the control parameter of leveling cyclinder 1 can also be inputted on the human-computer interaction device 16 again, and secondary leveling is carried out to the test platform 3.
The collection of step 102, angle and pressure signal：First, A/D conversions are carried out as the pressure signal detected by the force cell 2 of A/D conversion circuit modules 15 pair three, obtains three pressure value FA'、FB' and FC', by 14 pairs of microprocessor module handled through A/D conversion circuit modules 15 after three pressure value FA'、FB' and FC' be acquired；Then, the road roller steel wheel 10 is turned over into θ angles manually, pressure signal detected by the rotational angle signal of the road roller steel wheel 10 detected as the A/D conversion circuit modules 15 to angular transducer 5 and three force cells 2 carries out A/D conversions, obtains angle value θ and three pressure value FA、FBAnd FC, by 14 pairs of microprocessor module handled through A/D conversion circuit modules 15 after angle value θ and three pressure value FA、FBAnd FCIt is acquired；
The determination of step 103, the centroid position of road roller steel wheel 10：The microprocessor module 14 calls pressure and angle-data processing module to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, the centroid position of the road roller steel wheel 10 is obtained；
In the present embodiment, microprocessor module 14 described in step 103 calls pressure and angle-data processing module to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, its integrated treatment analysis process comprises the following steps：
Step 1031, set up rectangular coordinate system in space：The microprocessor module 14 is using the midpoint of the triangle ABC bases BC as the origin of coordinates, and using the triangle ABC bases BC as X-axis, using a height of Y-axis perpendicular to the triangle ABC bases BC, using cross the origin of coordinates and where the triangle ABC plane straight line as Z axis, set up rectangular coordinate system in space；
Step 1032, the microprocessor module 14 call the pressure and angle-data processing module and according to formula：The road roller steel wheel 10 is turned over into the force cell 2 before θ angles to detect and pressure value F through processingA', and the road roller steel wheel 10 turns over that the angular transducer 5 after θ angles is detected and the angle value θ through processing and three force cells 2 are detected and the pressure value F through processingA、FBAnd FCBe converted to the centroid position coordinate X of road roller steel wheel 10g,Yg,Zg, wherein, H is the height of the isosceles triangle or the equilateral triangle, FA' the pressure value obtained after the pressure signal that force cell 2 of the θ angles anteposition at the triangle ABC summits A detect is handled through the A/D conversion circuit modules 15 is turned over by the road roller steel wheel 10, θ is the angle that the road roller steel wheel 10 is turned over and is the angle value that described 5 detection angles values of angular transducer are obtained after the A/D conversion circuit modules 15 processing, FA、FBAnd FCRespectively described road roller steel wheel 10, which is turned over, is located at three pressure values that the pressure signal that is detected of three force cells 2 that described triangle ABC summits A, B and C locate is obtained after the A/D conversion circuit modules 15 processing after θ angles.
The display of step 104, the centroid position of road roller steel wheel 10：The microprocessor module 14 sends display control signal to human-computer interaction device 16, and display is synchronized to the centroid position of road roller steel wheel 10 determined in step 103 by human-computer interaction device 16；
Step 2: the amplitude uniformity of road roller steel wheel 10 is tested, detailed process is as follows：
Step 201, fixation：It will be screwed on for the bolt for being fixedly connected with road roller steel wheel 10 and front frame of road roller 8 so that the road roller steel wheel 10 is fixedly connected on the front frame of road roller 8；
The collection of step 202, acceleration signal：The vibration control parameter of road roller steel wheel 10 is inputted on the human-computer interaction device 16, microprocessor module 14 receives the vibration control parameter of road roller steel wheel 10 and by controlling hydraulic pump 20 and realizing the control vibrated to the road roller steel wheel 10 with the magnetic valve 21 that the vibrating motor 12 is connected；Meanwhile, the vibration acceleration signal of the diverse location of road roller steel wheel 10 detected by the A/D conversion circuit modules 15 to multiple acceleration transducers 11 carries out A/D conversions, obtains multiple acceleration magnitude a1, a2..., ai, then by 14 pairs of microprocessor module handled through A/D conversion circuit modules 15 after acceleration magnitude a1, a2..., aiIt is acquired, wherein, i is the quantity of the acceleration transducer 11；
The determination of step 203, the amplitude excursion δ of road roller steel wheel 10：The microprocessor module 14 calls acceleration information processing module to multiple acceleration magnitude a for being collected1, a2..., aiComprehensive analysis processing is carried out, the amplitude excursion δ of road roller steel wheel 10 is obtained；
In the present embodiment, microprocessor module 14 described in step 203 calls acceleration information processing module to multiple acceleration magnitude a for being collected1,a2,…,aiCarry out comprehensive analysis processing process be：The microprocessor module 14 calls the acceleration information processing module and according to formula Multiple acceleration transducers 11 are detected and the acceleration signal through processing is converted to the amplitude excursion δ of road roller steel wheel 10, wherein, max (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn maximum, min (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn minimum value, AVG (a1,a2..., ai) it is multiple acceleration magnitude a1,a2..., aiAverage value.Specifically, in the present embodiment, the value of the i is 3 or 5.
The display of step 204, the amplitude excursion δ of road roller steel wheel 10：The microprocessor module 14 sends display control signal to human-computer interaction device 16, and display is synchronized to the amplitude excursion δ of road roller steel wheel 10 determined in step 203 by human-computer interaction device 16.
Pass through the centroid position of road roller steel wheel 10 and the amplitude excursion δ of road roller steel wheel 10 being shown on human-computer interaction device 16, operating personnel can be well understood whether the barycenter of road roller steel wheel 10 offset by geometric center, and can learn that the barycenter of road roller steel wheel 10 deviates the degree of geometric center, the uniformity of the amplitude of road roller steel wheel 10 can also be recognized, and influence degree of the centroid position of road roller steel wheel 10 skew to the amplitude uniformity of road roller steel wheel 10 can be judged, help to propose corrective measure, and then improve the operation quality of road roller.
It is described above; only it is presently preferred embodiments of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure substantially made according to the technology of the present invention to above example changes, and is still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of road roller steel wheel barycenter and amplitude uniformity test system, the road roller steel wheel（10）Front frame of road roller is arranged on by vibrating shaft（8）Go up and pass through bolt and front frame of road roller（8）It is fixedly connected, the front frame of road roller（8）On be provided with for drive vibration shaft vibration vibrating motor（12）, the vibrating motor（12）Output shaft be connected with vibrating shaft；It is characterized in that：The road roller steel wheel barycenter and amplitude uniformity test system include steel wheel barycenter test system, steel wheel amplitude uniformity test system and hydraulic system（17）, and for the test data to steel wheel barycenter test system and steel wheel amplitude uniformity test system analyzed and processed and be used for hydraulic system（17）The control system being controlled；The steel wheel barycenter test system includes three leveling cyclinders（1）, correspond to be arranged on three leveling cyclinders respectively（1）Three force cells on piston rod top（2）With installed in three force cells（2）The test platform on top（3）, the test platform（3）Top be symmetrically arranged with two be used for support road roller steel wheel（10）Support wheel（6）, the test platform（3）Top be provided with for test platform（3）Carry out the horizontal measuring instrument of leveling（4）With for road roller steel wheel（10）The angular transducer that measures of rotational angle（5）, three leveling cyclinders（1）With three force cells（2）ABC triangular in shape is laid, and the triangle ABC is isosceles triangle or equilateral triangle；The hydraulic system（17）With vibrating motor（12）And leveling cyclinder（1）Connect and for being vibrating motor（12）And leveling cyclinder（1）Hydraulic power is provided, the steel wheel amplitude uniformity test system includes being used for front frame of road roller（8）It is supported on the front frame bearing on its top（7）With installed in road roller steel wheel（10）Above and for road roller steel wheel（10）Multiple acceleration transducers that vibration acceleration at diverse location is detected（11）, multiple acceleration transducers（11）Along the road roller steel wheel（10）Axial direction be equably laid in the road roller steel wheel（10）On；The control system includes microprocessor module（14）And and microprocessor module（14）The A/D conversion circuit modules connected（15）And human-computer interaction device（16）, multiple force cells（2）, the angular transducer（5）With multiple acceleration transducers（11）With the A/D conversion circuit modules（15）Connect, the hydraulic system（17）With the microprocessor module（14）Connect.
2. according to road roller steel wheel barycenter and amplitude uniformity test system described in claim 1, it is characterised in that：The acceleration transducer（11）Quantity be three or five.
3. according to road roller steel wheel barycenter and amplitude uniformity test system described in claim 1, it is characterised in that：The front frame of road roller（8）On damping block supporting plate is installed（13）, the damping block supporting plate（13）On be provided with positioned at the road roller steel wheel（10）With the damping block supporting plate（13）Between damping block（9）.
4. according to road roller steel wheel barycenter and amplitude uniformity test system described in claim 1, it is characterised in that：The hydraulic system（17）Including the supply reservoir being sequentially connected by oil pipe（18）, oil filter（19）And hydraulic pump（20）, and pass through oil pipe and hydraulic pump（20）Four magnetic valves of connection（21）, wherein three magnetic valves（21）Correspond to respectively and three leveling cyclinders（1）Connection, another magnetic valve（21）With vibrating motor（12）Connection, connects the oil filter（19）With hydraulic pump（20）Oil pipe on be connected with overflow valve（22）, the overflow valve（22）Pass through oil pipe and overflow fuel tank（23）Connection；The hydraulic pump（20）With four magnetic valves（21）With the microprocessor module（14）Connect.
5. according to road roller steel wheel barycenter and amplitude uniformity test system described in claim 4, it is characterised in that：The magnetic valve（21）For three position four-way electromagnetic valve.
6. according to road roller steel wheel barycenter and amplitude uniformity test system described in claim 1, it is characterised in that：The human-computer interaction device（16）For touch LCD screen or computer.
7. a kind of road roller steel wheel barycenter and amplitude uniformity method of testing using test system as claimed in claim 1, it is characterised in that this method comprises the following steps：
Step 1: road roller steel wheel（10）Centroid position is tested, and detailed process is as follows：
Step 101, installation and leveling：First, by the front frame of road roller connected as one（8）, road roller steel wheel（10）And vibrating motor（12）It is placed on front frame bearing（7）Top so that front frame of road roller（8）It is supported on the front frame bearing（7）Top, and cause the road roller steel wheel（10）It is supported on two support wheels（6）Top；Then, it will be used to be fixedly connected with road roller steel wheel（10）And front frame of road roller（8）Bolt back out so that the road roller steel wheel（10）It can be rotated on the vibrating shaft；Then, in the human-computer interaction device（16）Upper input leveling cyclinder（1）Control parameter, microprocessor module（14）Receive leveling cyclinder（1）Control parameter and by controlling hydraulic pump（20）With with three leveling cyclinders（1）Three magnetic valves of connection（21）Realize to three leveling cyclinders（1）Control so that the test platform（3）It is positioned horizontally in multiple force cells（2）Top；
The collection of step 102, angle and pressure signal：First, by the A/D conversion circuit modules（15）To three force cells（2）Detected pressure signal carries out A/D conversions, obtains three pressure value FA'、FB' and FC', by microprocessor module（14）To through A/D conversion circuit modules（15）Three pressure value F after processingA'、FB' and FC' be acquired；Then, by the road roller steel wheel（10）θ angles are turned over manually, by the A/D conversion circuit modules（15）To angular transducer（5）The road roller steel wheel detected（10）Rotational angle signal and three force cells（2）Detected pressure signal carries out A/D conversions, obtains angle value θ and three pressure value FA、FBAnd FC, by microprocessor module（14）To through A/D conversion circuit modules（15）Angle value θ and three pressure value F after processingA、FBAnd FCIt is acquired；
Step 103, road roller steel wheel（10）The determination of centroid position：The microprocessor module（14）Pressure and angle-data processing module are called to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, the road roller steel wheel is obtained（10）Centroid position；
Step 104, road roller steel wheel（10）The display of centroid position：The microprocessor module（14）Display control signal is sent to human-computer interaction device（16）, pass through human-computer interaction device（16）To the road roller steel wheel determined in step 103（10）Centroid position synchronizes display；
Step 2: road roller steel wheel（10）Amplitude uniformity is tested, and detailed process is as follows：
Step 201, fixation：It will be used to be fixedly connected with road roller steel wheel（10）And front frame of road roller（8）Bolt screw on so that the road roller steel wheel（10）It is fixedly connected on the front frame of road roller（8）On；
The collection of step 202, acceleration signal：In the human-computer interaction device（16）Upper input road roller steel wheel（10）Vibration control parameter, microprocessor module（14）Receive road roller steel wheel（10）Vibration control parameter and by controlling hydraulic pump（20）With with the vibrating motor（12）The magnetic valve of connection（21）Realize to the road roller steel wheel（10）The control of vibration；Meanwhile, by the A/D conversion circuit modules（15）To multiple acceleration transducers（11）The road roller steel wheel detected（10）Vibration acceleration signal at diverse location carries out A/D conversions, obtains multiple acceleration magnitude a1, a2..., ai, then by microprocessor module（14）To through A/D conversion circuit modules（15）Acceleration magnitude a after processing1,a2..., aiIt is acquired, wherein, i is the acceleration transducer（11）Quantity；
Step 203, road roller steel wheel（10）Amplitude excursion δ determination：The microprocessor module（14）Acceleration information processing module is called to multiple acceleration magnitude a for being collected1, a2..., aiComprehensive analysis processing is carried out, the road roller steel wheel is obtained（10）Amplitude excursion δ；
Step 204, road roller steel wheel（10）Amplitude excursion δ display：The microprocessor module（14）Display control signal is sent to human-computer interaction device（16）, pass through human-computer interaction device（16）To the road roller steel wheel determined in step 203（10）Amplitude excursion δ synchronizes display.
8. in accordance with the method for claim 7, it is characterised in that：Microprocessor module described in step 103（14）Pressure and angle-data processing module are called to three pressure value F being collectedA'、FB' and FC', and angle value θ and three pressure value FA、FBAnd FCComprehensive analysis processing is carried out, its integrated treatment analysis process comprises the following steps：
Step 1031, set up rectangular coordinate system in space：The microprocessor module（14）The origin of coordinates is in midpoint using the triangle ABC bases BC, and using the triangle ABC bases BC as X-axis, using a height of Y-axis perpendicular to the triangle ABC bases BC, using cross the origin of coordinates and where the triangle ABC plane straight line as Z axis, set up rectangular coordinate system in space；
Step 1032, the microprocessor module（14）Call the pressure and angle-data processing module and according to formula：By the road roller steel wheel（10）Turn over the force cell before θ angles（2）Detect and the pressure value F through processingA', and the road roller steel wheel（10）Turn over the angular transducer after θ angles（5）Detect and the angle value θ through processing and three force cells（2）Detect and the pressure value F through processingA、FBAnd FCBe converted to road roller steel wheel（10）Centroid position coordinate（Xg,Yg,Zg）, wherein, H is the height of the isosceles triangle or the equilateral triangle, FA' it is the road roller steel wheel（10）Turn over force cell of the θ angles anteposition at the triangle ABC summits A（2）The pressure signal detected is through the A/D conversion circuit modules（15）The pressure value obtained after processing, θ is the road roller steel wheel（10）The angle that turns over and be the angular transducer（5）Institute's detection angles value is through the A/D conversion circuit modules（15）The angle value obtained after processing, FA、FBAnd FCRespectively described road roller steel wheel（10）Turn over three force cells being located at after θ angles at described triangle ABC summits A, B and C（2）The pressure signal detected is through the A/D conversion circuit modules（15）Three pressure values obtained after processing.
9. in accordance with the method for claim 7, it is characterised in that：Microprocessor module described in step 203（14）Acceleration information processing module is called to multiple acceleration magnitude a for being collected1, a2..., aiCarry out comprehensive analysis processing process be：The microprocessor module（14）Call the acceleration information processing module and according to formula By multiple acceleration transducers（11）Detect and the acceleration signal through processing is converted to road roller steel wheel（10）Amplitude excursion δ, wherein, max (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn maximum, min (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiIn minimum value, AVG (a1,a2,…,ai) it is multiple acceleration magnitude a1,a2,…,aiAverage value.
10. according to the method described in claim 7 or 9, it is characterised in that：The value of the i is 3 or 5.
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| CN201210294543.XA CN102798500B (en) | 2012-08-19 | 2012-08-19 | System and method for testing barycenter of road roller steel wheel and vibration amplitude uniformity of road roller steel wheel |
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| CN201210294543.XA CN102798500B (en) | 2012-08-19 | 2012-08-19 | System and method for testing barycenter of road roller steel wheel and vibration amplitude uniformity of road roller steel wheel |
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| CN104155073A (en) * | 2014-08-21 | 2014-11-19 | 徐工集团工程机械股份有限公司道路机械分公司 | Road roller vibration testing bench |
| KR101826657B1 (en) | 2016-03-11 | 2018-03-22 | 두산중공업 주식회사 | Apparatus and Method for Calculating Center of Gravity |
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| CN102798500B (en) | 2014-07-16 |
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