CN204008052U - A kind of street roller vibration table - Google Patents
A kind of street roller vibration table Download PDFInfo
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- CN204008052U CN204008052U CN201420475956.2U CN201420475956U CN204008052U CN 204008052 U CN204008052 U CN 204008052U CN 201420475956 U CN201420475956 U CN 201420475956U CN 204008052 U CN204008052 U CN 204008052U
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Abstract
The utility model belongs to technical field of engineering machinery, is specifically related to a kind of street roller vibration table.This street roller vibration table comprises testing table body and hydraulic system; Described testing table body involving vibrations wheeling support [105] and be set in parallel in two groups of vibrating wheels bearing [105] both sides for supporting the supporting mechanisms of vibrating wheels, supporting mechanism comprises the tire axle [127] being arranged on electric machine support [201] and is arranged on the tire [114] on tire axle; Described hydraulic system comprises variable-frequency motor [402], fluid power system, hydraulic vibrating system, hydraulic floating system; This street roller vibration table is simple in structure, easy for installation, reasonable in design, maintaining and easy to use, can effectively reduce driver's labour intensity, avoid the test site uncertain factor of area finite sum construction period, defect and deficiency that weather conditions, the oil non-renewable energy resources of take are raw material, there is result of use good, the feature being easy to be extended and applied.
Description
Technical field
The utility model belongs to technical field of engineering machinery, is specifically related to a kind of street roller vibration table.
Background technology
Vibroll is to increase the construction machinery that the packing of actuating medium is main application, to utilize machine weight and exciting force to carry out compacting operation, the vibration of vibrating wheels relies on the High Rotation Speed band vibrator rotation of vibrating motor, produce huge centrifugal force, centrifugal force makes vibrating wheels generation judder come compacted subgrade and road surface.
At present vibroll all will carry out preventing test before dispatching from the factory at testing field, is included in vibration test in the vibra shoot of filled rubber piece and the high speed test run in testing field; The fail-test of vibroll vibrating wheels was carried out in street roller rubber vibration groove or in construction site by 1000 hours simultaneously.Because rubber vibration groove test site area is limited, construction site is because the duration is uncertain, also has test affected by adverse weathers such as sleet etc., the vibroll limited amount of simultaneously testing, and production efficiency is lower; In process of the test, laboratory technician needs continuous working labour intensity large; In process of the test, rely on the power source-engine of street roller to produce power, make street roller walking and vibration, consume a large amount of non-renewable energy resources---oil, discharge a large amount of waste gas and noise, be not inconsistent with the development trend of energy-saving and emission-reduction, carbon emission has received the whole mankind's concern, and energy-conservation, efficient, reliable, environment-friendly type has become the trend of social development.
Summary of the invention
The technical matters that the utility model solves: for above-mentioned the deficiencies in the prior art, a kind of novel street roller vibration table is provided, it is simple in structure, easy for installation, reasonable in design, maintaining and easy to use, can effectively reduce driver's labour intensity, avoid the test site uncertain factor of area finite sum construction period, defect and deficiency that weather conditions, the oil non-renewable energy resources of take are raw material, have result of use good, the feature being easy to be extended and applied.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A street roller vibration table, is characterized in that: comprise testing table body, hydraulic system and control system;
Described testing table body involving vibrations wheeling support 105 and be set in parallel in two groups of vibrating wheels bearing 105 both sides for supporting the supporting mechanism of vibrating wheels, supporting mechanism comprises the tire axle 127 being arranged on electric machine support 201 and is arranged on the tire 114 on tire axle;
Vibrating wheels support 101 one end are fixed in vibrating wheels, and the other end is arranged on vibrating wheels bearing 105; Reductor 102 is fixed in vibrating wheels support 101, and CD-ROM drive motor 103 is arranged on reductor 102 and drives vibrating wheels to rotate; Vibrating motor 129 is arranged in vibrating wheels, makes vibrating wheels produce vibration; Tire drive motor 106 drives 127 rotations of tire axle by electromagnetic clutch 130;
Described hydraulic system comprises variable-frequency motor 402, fluid power system, hydraulic vibrating system, hydraulic floating system; Variable-frequency motor 402 one end are connected with hydraulic floating system by oil circuit, and the other end is connected with fluid power system, hydraulic vibrating system respectively by oil circuit, and fluid power system and hydraulic vibrating system are in parallel; Fluid power system drives CD-ROM drive motor 103 rotations; Hydraulic vibrating system drives vibrating motor 129 rotations.
Further, described electromagnetic clutch 130 when test sheet drives street roller in attracting state, two while driving street roller in released state.
Further, there is " L " type locator slide described vibrating wheels bearing 105 inner sides; Vibrating wheels support 101 one end are fixed in vibrating wheels, and the other end is in " L " of vibrating wheels bearing 105 type locator slide, by adjusting pad 104, regulates the position of vibrating wheels support 101 on vibrating wheels bearing 105.
Further, described hydraulic floating system comprises gear-type pump 401, the first reversal valve 408, the second reversal valve 409, floating position valve 410, surplus valve 411, throttling valve 412, valve piece 413 and floating cylinder 202; Floating cylinder 202 one end are fixed on vibrating wheels bearing 105, and the other end supports vibrating wheels support 101; Described variable-frequency motor 402 driven gear pump 401 rotations, produce pressure oil and enter valve piece 413; The first reversal valve 408, the second reversal valve 409, floating position valve 410, surplus valve 411, throttling valve 412 are Sandwich plate valve piece, are all fixed on valve piece 413; Floating position valve 410 has unsteady and locked two positions; The speed that throttling valve 412 regulates floating cylinder 202 to decline.
Further, described street roller vibration table also comprises automatic regulating wheel air pressure device, and it comprises gas bag 601, air-operated solenoid valve group 602, pressure transducer 603, joint 604, controller 518 and air compressor machine 606; Air compressor machine 606 is connected with gas bag 601, gas bag 601 is connected with controller 518, air-operated solenoid valve group 602 one end and controller 518, the other end is connected with joint 604, and air-operated solenoid valve group 602 respectively with controller 518, with joint 604 junctions pressure transducer 603 is set.
Further, described street roller vibration table also comprises tyre temperature control device, and it comprises motor 701, water pump 702, ECU (Electrical Control Unit) 703, electromagnetic water valve 704 and shower nozzle 705; By motor 701, directly drive water pump 702, the water of water pump 702 outlets is delivered to shower nozzle 705, by shower nozzle 705, water is sprayed, at water pump 702 and shower nozzle 705, be directly connected with electromagnetic water valve 704, in water pump 702 outlets, be provided with the ECU (Electrical Control Unit) 703 that water pump 702 outlet water spray pressure are detected, on tire 114 surfaces, be provided with the ECU (Electrical Control Unit) 703 that tire 114 surface temperatures are detected, ECU (Electrical Control Unit) 703 is controlled electromagnetic water valve 704 and is opened and closed.
The beneficial effects of the utility model:
(1) the utility model is by being supported on the vibrating wheels of street roller on rubber tyre, realizes the dispatching from the factory and fail-test of vibration performance of vibration wheel of road roller, and rubber tyre effectively damping vibration steel wheel is delivered to the oscillation intensity of base.
(2) automatic regulating wheel air pressure device of the present utility model carries out the timely automatically concentrated gas charging system of adjusting to tire sets pressure in street roller process of the test, can adapt to the vibrating wheels of different exciting forces and amplitude, can make the pressure of tire more rational.Avoid bounce simultaneously, guarantee that the air pressure in each tire is consistent, and it is easy to operate, cheap.
(3) hydraulic floating system of the present utility model, the real work operating mode of analog vibration wheel loads, and makes test more effective, improves the driving force of tire to vibrating wheels, is applicable to the test of polytypic street roller.
(4) tyre temperature control device of the present utility model can be realized intelligent, hommization control according to surface of tyre temperature and exit of pump pressure, has extended the serviceable life of tire.
(5) the utility model is equipped with electromagnetic clutch at variable-frequency motor and tire between centers and singly drives street roller and two conversions of driving street roller test to realize.
(6) use of the present utility model is not subject to the restriction of place, weather, and the street roller quantity that can simultaneously test is many, and working service is convenient.
(7) the utility model, in process of the test, only needs to observe the variation of measuring instrument, does not need, as traditional test method, by laboratory technician, to be driven, and greatly reduces laboratory technician's labour intensity.
(8) the utility model is used variable-frequency motor to replace engine, does not consume non-renewable energy resources---oil, has avoided a large amount of harmful gases of internal combustion engine generation and has caused the carbon dioxide of greenhouse effect and the noise that internal combustion engine produces, energy-conserving and environment-protective.
(9) use of the present utility model, can uninterruptedly test by twenty four hours, effectively shortens construction cycle and the delivery test cycle of street roller new product, and it is introduced to the market fast.
Accompanying drawing explanation
Fig. 1 testing table body front view;
Fig. 2 testing table body left view;
Fig. 3 testing table body A is to enlarged drawing;
Fig. 4 hydraulic system structure schematic diagram;
Fig. 5 electric control system instrument desk structure schematic diagram;
Fig. 6 electric control system structural representation;
The automatic regulating wheel air pressure of Fig. 7 apparatus structure schematic diagram;
Fig. 8 tyre temperature control device structural representation.
Embodiment
Below in conjunction with accompanying drawing, describe the technical solution of the utility model in detail:
A kind of street roller vibration table comprises testing table body, hydraulic system, electric control system, automatic regulating wheel air pressure device and tyre temperature control device.
As shown in Figure 1-2, testing table body involving vibrations wheeling support 105 and be set in parallel in two groups of vibrating wheels bearing 105 both sides for supporting the supporting mechanism of vibrating wheels, supporting mechanism comprises the tire axle 127 being arranged on electric machine support 201 and is arranged on the tire 114 on tire axle.Testing table body is directly fixed on ground or by being arranged on the base of its bottom and is fixed on ground with the vibroshock that is arranged on base bottom.
Testing table body is involving vibrations wheel support 101 also, reductor 102, CD-ROM drive motor 103, adjust pad 104, tire drive motor 106, base 107, shaft coupling 108, gland 109, set nut 110, bearing 111, cover plate 112, set nut 113, terminal pad 115, key 116, sleeve 117, terminal pad 118, key 119, sleeve 120, key 121, set nut 122, gland 123, ramuscule seat 124, bearing 125, pressing plate 126, end cap 128, vibrating motor 129 and electromagnetic clutch 130.
Vibrating wheels bearing 105, ramuscule seat 124, motor support base 201 are arranged on base 107, there is " L " type locator slide vibrating wheels bearing 105 inner sides, structure is shown in Fig. 3, vibrating wheels support 101 one end are fixed in vibrating wheels, and the other end is in " L " of vibrating wheels bearing 105 type locator slide, by adjusting pad 104, regulate the position of vibrating wheels support 101 on vibrating wheels bearing 105; CD-ROM drive motor 103 is arranged on reductor 102, and reductor 102 is fixed in vibrating wheels support 101, thereby drives vibrating wheels rotation; Vibrating motor 129 is arranged in vibrating wheels, makes vibrating wheels produce vibration; Tire 114 is fixed together with terminal pad 115 and terminal pad 118, be contained on tire axle 127, by key 116, key 119, key 121, transmit the moment of torsion of tire axle 127, the position of set nut 113, set nut 122 and sleeve 117, sleeve 120 location tires 114; Bearing 111, bearing 125 are arranged on respectively in motor support base 201, support tire axle 127; Tire drive motor 106 drives 127 rotations of tire axle by electromagnetic clutch 130, shaft coupling 108 successively; Gland 109, set nut 110,112 pairs of bearings 111 of cover plate position; Gland 123, pressing plate 126,128 pairs of bearings of end cap, 125 location.Electromagnetic clutch 130 when test sheet drives street roller in attracting state, two while driving street roller in released state.
As shown in Figure 4, hydraulic system comprises variable-frequency motor 402, fluid power system, hydraulic vibrating system, hydraulic floating system.Variable-frequency motor 402 one end are connected with hydraulic floating system by oil circuit, and the other end is connected with fluid power system, hydraulic vibrating system respectively by oil circuit, and fluid power system and hydraulic vibrating system are in parallel.
Fluid power system comprises driving pump 403, hydraulic reservoir 404, oil gathering block 405.
Variable-frequency motor 402 drives driving pump 403 rotations, produces hydraulic oil and drives CD-ROM drive motor 103 rotations, and CD-ROM drive motor 103 is connected with the reductor 102 being arranged in vibrating wheels, makes vibrating wheels around the central shaft rotation of reductor 102.Driving pump 403 is Variable plunger pump, with slippage pump, controls the rotating speed of CD-ROM drive motor 103 by controlling the angle of rocking arm, and a small amount of hydraulic oil flows back to hydraulic reservoir 404 by oil gathering block 405, and when vibrating wheels is engaged wheel, fluid power system is not worked.
When street roller is for two while driving street roller, fluid power system adopts stepless speed regulation enclosed variable system, can handle easily speed change, commutation and the parking of vibrating wheels.In closed circuit, the suction of driving pump 403, oil drain out are directly connected with the hydraulic fluid port of CD-ROM drive motor 103, closed circulation of mobile formation of fluid.In addition, in closed circuit, can maintain certain back pressure, stable working is good, and flexible operation is accurate.When street roller is when singly driving street roller, fluid power system is not worked.
Hydraulic vibrating system involving vibrations pump 406, hydraulic reservoir 404, filtrator 407.
Variable-frequency motor 402 drives vibratory pump 406 rotations, the hydraulic oil of hydraulic reservoir 404 sucks the slippage pump of vibratory pump 406 through filtrator 407, the hydraulic oil that vibratory pump 406 produces drives vibrating motor 129 rotations that are arranged in vibrating wheels, vibrating motor 129 is connected by spring coupling with vibrator, thereby makes vibrating wheels produce vibration.If change the sense of rotation of vibrating motor 129, can realize the conversion between low frequency high amplitude and high-frequency short arc.Vibration frequency is mainly coefficient by the discharge capacity of vibratory pump 406 and vibrating motor 129, finally depends on the output speed of vibrating motor 129.The size of amplitude is by the structures shape of vibrator, and relevant with the eccentric throw of vibrator, eccentric throw is larger, and amplitude is larger, otherwise less; Simultaneously relevant with oscillating mass, quality is larger, and amplitude is less.
Hydraulic floating system can make vibrating wheels at the trial, and vibrating wheels is loaded according to the actual condition of street roller, makes test more effective, improves the driving force of tire to vibrating wheels simultaneously.Can make testing table test the vibrating wheels of different-diameter, increase the usable range of testing table.
Hydraulic floating system comprises gear-type pump 401, the first reversal valve 408, the second reversal valve 409, floating position valve 410, surplus valve 411, throttling valve 412, valve piece 413 and floating cylinder 202.
Floating cylinder 202 one end are fixed on vibrating wheels bearing 105, and the other end supports vibrating wheels support 101; Variable-frequency motor 402 driven gear pump 401 rotations, produce pressure oil and enter valve piece 413; The first reversal valve 408, the second reversal valve 409, floating position valve 410, surplus valve 411, throttling valve 412 are Sandwich plate valve piece, are all fixed on valve piece 413; Floating position valve 410 has unsteady and locked two positions; The speed that throttling valve 412 regulates floating cylinder 202 to decline.
Control system, by intelligent data acquisition and the analytic system of vibration, tach signal collection, processing, transmission and the demonstration of configuration, makes control more accurate, and evaluates the good of tested street roller performance.
As shown in Fig. 5-6, control system comprises instrument desk 501, battery main switch 502, vibroswitch 503, frequency automatic transfer switch 504, electromagnetic clutch switch 505, drives gauge tap 506, spray control switch 507, emergency stop switch 508, instrument lamp switch 509, vibration bearing thermometer 510, oil thermometer 511, vibrational system tensimeter 512, motor speed table 513, vibrating wheels tachometer gage 514, vibration frequency table 515, tire pressure alarm lamp 516, wire harness 517 and the first controller 518.
Control system is by instrument desk 501 its platforms as the various instrument relays of installation; Battery main switch 502 is controlled the general supply of whole street roller vibration table; Whether the vibration that vibroswitch 503 is control vibrating motor 129, be connected with controller 518, controller 518 is set high shaking and the low time of vibration interval shaking, controller 518 is by controlling the direction of vibratory pump 406 output hydraulic oils, with this, control the rotating speed of vibrating motor 129, completion system height shake and low shaking between automatically switch.Electromagnetic clutch switch 505 rotates for controlling tire axle 127; Driving gauge tap 506 is to control the rotation of CD-ROM drive motor 103; Tire temperature sensor gathers tyre temperature and also feeds back to controller 518, and controller 518 compares the temperature arranging in collecting temperature and controller, and when collecting temperature is during higher than set temperature, controller 518 is controlled water pumps 701 work, completing watering action.Emergency stop switch 508 can make vibrating wheels moment stop operating, for operation in emergency circumstances.Instrument lamp switch 509 control instrument background lights, the convenient situation of each instrument of observing when working night.The temperature of vibration bearing thermometer 510 measuring vibrations bearings, surpasses setting value alarm when measuring temperature.Oil thermometer 511 shows the temperature of lubricating oil in vibrating wheels; Vibrational system tensimeter 512 shows the pressure of vibrational system; Motor speed table 513 shows the rotating speed of motor; Vibrating wheels tachometer gage 514 demonstrates the operating rate of street roller by the rotating speed of vibrating wheels; Vibration frequency table 515 shows the frequency of vibrating motor.Baroceptor collection wheel air pressure value also feeds back to controller 518, when tire pressure during below or above setting value tire pressure alarm lamp 516 report to the police, when tire pressure is set lower than controller, controller 518 is controlled self-filler and is carried out automatic inflating action.Wire harness 517 is for the various electrical equipments of joint test platform.
Automatically regulating wheel air pressure device carries out to the pressure of tire 114 dynamic gas pressure system of adjusting in time in street roller process of the test, guarantees that the air pressure in each tire 114 is consistent simultaneously, can adapt to different street rollers, the bounce while avoiding testing.
As shown in Figure 7, regulating wheel air pressure device comprises gas bag 601, air-operated solenoid valve group 602, pressure transducer 603, joint 604, controller 518 and air compressor machine 606 automatically.
Air compressor machine 606 is connected with gas bag 601, gas bag 601 is connected with controller 518, air-operated solenoid valve group 602 one end and controller 518, the other end is connected with joint 604, and air-operated solenoid valve group 602 respectively with controller 518, with joint 604 junctions pressure transducer 603 is set.
The pressurized air that air compressor machine 606 produces enters gas bag 601 and keeps constant voltage, and the constant voltage numerical value of gas bag 601 is sent to controller 518 by the pressure transducer 603 in air-operated solenoid valve group 602.Controller 518 gathers the pressure of tire 114 simultaneously, and compares with the pressure setting, and when tire 114 insufficient pressure, controller 518 is controlled 114 inflations of 601 pairs of tires of gas bag, and while being charged to a certain degree, controller 518 sends instruction, stops inflation.
As shown in Figure 8, tyre temperature control device comprises motor 701, water pump 702, ECU (Electrical Control Unit) 703, electromagnetic water valve 704 and shower nozzle 705.
By motor 701, directly drive water pump 702, the water of water pump 702 outlets is delivered to shower nozzle 705, by shower nozzle 705, water is sprayed, at water pump 702 and shower nozzle 705, be directly connected with electromagnetic water valve 704, in water pump 702 outlets, be provided with the ECU (Electrical Control Unit) 703 that water pump 702 outlet water spray pressure are detected, on tire 114 surfaces, be provided with the ECU (Electrical Control Unit) 703 that tire 114 surface temperatures are detected, ECU (Electrical Control Unit) 703 is controlled electromagnetic water valve 704, its advantage is intelligent, hommization, by 114 serviceable lifes of automatic control prolongation tire to tyre temperature.
Water pump 702 is driven by motor 701, and low-pressure water is flowed out by water pump 702 high pressure chests from water tank enters water pump 702, directly arrives shower nozzle 705 and be sprayed onto tire 114 surfaces after electromagnetic water valve 704.ECU (Electrical Control Unit) 703 is monitored the discharge pressure of water pump 702 outlets and the temperature on tire 114 surfaces at any time, and controls electromagnetic water valve 704 according to discharge pressure and tyre temperature.
Claims (6)
1. a street roller vibration table, is characterized in that: comprise testing table body and hydraulic system; Described testing table body involving vibrations wheeling support [105] and be set in parallel in two groups of vibrating wheels bearing [105] both sides for supporting the supporting mechanisms of vibrating wheels, supporting mechanism comprises the tire axle [127] being arranged on electric machine support [201] and is arranged on the tire [114] on tire axle; Vibrating wheels support [101] one end is fixed in vibrating wheels, and the other end is arranged on vibrating wheels bearing [105]; Reductor [102] is fixed in vibrating wheels support [101], and CD-ROM drive motor [103] is arranged on the upper vibrating wheels that drives of reductor [102] and rotates; Vibrating motor [129] is arranged in vibrating wheels, makes vibrating wheels produce vibration; Tire drive motor [106] drives tire axle [127] rotation by electromagnetic clutch [130]; Described hydraulic system comprises variable-frequency motor [402], fluid power system, hydraulic vibrating system, hydraulic floating system; Variable-frequency motor [402] one end is connected with hydraulic floating system by oil circuit, and the other end is connected with fluid power system, hydraulic vibrating system respectively by oil circuit, and fluid power system and hydraulic vibrating system are in parallel; Fluid power system drives CD-ROM drive motor [103] rotation; Hydraulic vibrating system drives vibrating motor [129] rotation.
2. street roller vibration table as claimed in claim 1, described electromagnetic clutch [130] when test sheet drives street roller in attracting state, two while driving street roller in released state.
3. street roller vibration table as claimed in claim 1 or 2, there is " L " type locator slide described vibrating wheels bearing [105] inner side; Vibrating wheels support [101] one end is fixed in vibrating wheels, and the other end is in " L " of vibrating wheels bearing [105] type locator slide, by adjusting pad [104], regulates the position of vibrating wheels support [101] on vibrating wheels bearing [105].
4. street roller vibration table as claimed in claim 1, described hydraulic floating system comprises gear-type pump [401], the first reversal valve [408], the second reversal valve [409], floating position valve [410], surplus valve [411], throttling valve [412], valve piece [413] and floating cylinder [202]; Floating cylinder [202] one end is fixed on vibrating wheels bearing [105], and the other end supports vibrating wheels support [101]; Described variable-frequency motor [402] driven gear pump [401] rotation, produces pressure oil and enters valve piece [413]; The first reversal valve [408], the second reversal valve [409], floating position valve [410], surplus valve [411], throttling valve [412] are Sandwich plate valve piece, are all fixed on valve piece [413]; Floating position valve [410] has unsteady and locked two positions; The speed that throttling valve [412] regulates floating cylinder [202] to decline.
5. the street roller vibration table as described in claim 1,2 or 4, described street roller vibration table also comprises automatic regulating wheel air pressure device, and it comprises gas bag [601], air-operated solenoid valve group [602], pressure transducer [603], joint [604], controller [518] and air compressor machine [606]; Air compressor machine [606] is connected with gas bag [601], gas bag [601] is connected with controller [518], air-operated solenoid valve group [602] one end and controller [518], the other end is connected with joint [604], and air-operated solenoid valve group [602] respectively with controller [518], with joint [604] junction pressure transducer [603] is set.
6. the street roller vibration table as described in claim 1,2 or 4, described street roller vibration table also comprises tyre temperature control device, it comprises motor [701], water pump [702], ECU (Electrical Control Unit) [703], electromagnetic water valve [704] and shower nozzle [705]; By motor [701], directly drive water pump [702], the water of water pump [702] outlet is delivered to shower nozzle [705], by shower nozzle [705], water is sprayed, at water pump [702] and shower nozzle [705], be directly connected with electromagnetic water valve [704], at water pump 702] outlet is provided with the ECU (Electrical Control Unit) [703] that water pump [702] outlet water spray pressure is detected, on tire [114] surface, be provided with the ECU (Electrical Control Unit) [703] that tire [114] surface temperature is detected, ECU (Electrical Control Unit) [703] is controlled electromagnetic water valve [704] and is opened and closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475956.2U CN204008052U (en) | 2014-08-21 | 2014-08-21 | A kind of street roller vibration table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420475956.2U CN204008052U (en) | 2014-08-21 | 2014-08-21 | A kind of street roller vibration table |
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| CN204008052U true CN204008052U (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-08-21 CN CN201420475956.2U patent/CN204008052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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