CN201083616Y - Simple harmonic excitation test stand - Google Patents
Simple harmonic excitation test stand Download PDFInfo
- Publication number
- CN201083616Y CN201083616Y CNU2007200460123U CN200720046012U CN201083616Y CN 201083616 Y CN201083616 Y CN 201083616Y CN U2007200460123 U CNU2007200460123 U CN U2007200460123U CN 200720046012 U CN200720046012 U CN 200720046012U CN 201083616 Y CN201083616 Y CN 201083616Y
- Authority
- CN
- China
- Prior art keywords
- live axle
- harmonic excitation
- testing table
- simple harmonic
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to a simple harmonic excitation test bed, the object of which is to eliminate the kinematic error caused by approximate simple harmonic motion by a crank link mechanism in the prior mechanical excitation test bed, thereby realizing a precise simple harmonic excitation test bed. Respective unidirectional stress way by double bearings is used on an eccentric shaft, thus eliminating the gap caused by direction changes and keeping the rolling friction between a driving bearing outer ring and a baffle bar so that the side friction force caused during driving is reduced. The test bed is driven by an electric motor, realizes frequency control, and uses a horizontal structure so as to reduce the center of gravity and be convenient for installation and adjustment. The utility model is applicable to tests of vibration absorbers of motorcycles and other occasions where need simple harmonic excitation test is needed.
Description
Technical field
The utility model relates to a kind of mechanical vibration reducing test unit, is meant a kind of harmonic excitation testing table especially.
Background technology
By China's " motorcycle vibration absorber technical conditions " (QC/T62-1993), " motorcycle vibration absorber test method " (QC/T63-1993), and in the CQC " specific (special) requirements of voluntary product " " motorcycle vibration absorber specific (special) requirements " (CQC/RY094-2003) and " Automobile Shock Absorber bench test method " (QC/T545-1999) stipulate, reply vibroshock one end applies standard simple harmonic motion excitation in the test, and that detects vibroshock on this basis shows merit characteristic, velocity characteristic etc.At present the exciting mode of vibroshock testing table has two kinds of hydraulic exciting and mechanical excitings, hydraulic exciting formula vibroshock testing table adopts the servo-hydraulic oil cylinder as excitation power source, mechanical excitation formula testing table mechanism generally adopts toggle as excitation system, and the motion that toggle produces is approximate simple harmonic motion, can produce certain kinematic error, the mechanism kinematic error is meant the approximate simple harmonic motion of toggle generation and the deviation of standard simple harmonic motion.This deviation comprises offset deviation, velocity deviation and phase deviation, can calculate the deviation of approximate simple harmonic motion and standard simple harmonic motion according to the physical dimension of testing table toggle, compare with standard harmonic, approximate its peak velocity of simple harmonic motion is bigger than normal, phase lag (phasing degree is less than normal).The error of mechanism kinematic will be brought the deviation of showing merit characteristic, velocity characteristic etc. of vibroshock.
Simple harmonic motion is a particle when making uniform motion on circumference, and its motion that projection constituted on this circular diameter is called simple harmonic motion.When driven member was done simple harmonic motion, its acceleration was pressed the cosine rule and is changed, so claim the cosine acceleration law again.
Utility model patent " vehicle shock absorber test-bed " (ZL95226272.X) has provided the version of a kind of crank connecting link machinery excitation type damper test stand, it is driven eccentric disc and drive piston by connecting rod by the one-level pulley decelerates by motor realizes shock motion up and down, and the characteristics of motion of its generation is approximate simple harmonic motion.
The American MTS damper test stand adopts servo hydraulic cylinder as vibrator, and crossbeam adopts two oil cylinders to realize synchronously adjusting up and down.Testing table is the vertical structure of two column single-beams.Servo-hydraulic excitation type vibroshock testing table is realized simple harmonic motion by computer instruction by hydraulic efficiency servo-valve control oil cylinder, though can realize simple harmonic quantity rule exciting, but relate to Hydrauservo System and control thereof, control is complicated, the cost height, and the shock motion precision depends on the performance of Hydrauservo System.
Summary of the invention
The purpose of this utility model is for solving problems of the prior art, a kind of accurate harmonic excitation testing table of mechanically realizing being provided.
The purpose of this utility model is to be achieved by following proposal:
By driving live axle 17 by small pulley 40 and big belt wheel 19 at abutment body 1 built-in variable-frequency motor 3, it is characterized in that: on the disk of live axle 17, be embedded with eccentric disc 18 and excentric shaft 28, and, by preceding shelves bar 14 and the back shelves bar of being located on the slide unit 36 26 exciting force is put on tested vibroshock 12 respectively by the duplex bearing 15 that places on the eccentric disc 18 outer excentric shafts of surveying 28; Described slide unit 36 is finished test by scrambler 37 that links to each other with live axle 17 ends and force transducer 10 cooperations by line slideway 16 guiding during test; On abutment body 1, also be mounted with sensor support base 5.
Adopting duplex bearing 15 on the excentric shaft 28 on described live axle 17 disks is single load bearing, be rolling friction between the outer ring of not having the gap when keeping the motion break-in and keeping the driving bearing in the duplex bearing 15 and preceding shelves bar 14 and the back shelves bar 26, reduce the direction finding power of driving process generation.
For a change the piston cylinder formula guidance mode of traditional experiment platform utilizes two line slideways 16 and track base 32 to make the vibrator linear movement guide, and is rolling friction, and the precision height exempts to lubricate.
Described sensor support base 5 can slide in dovetail groove and adjust the position, provides guiding by feather key 31 when moving, and relies on handwheel 8 to drive screw mandrel 6 nuts 4 convenient sensor support base 5 move operations of realizing.
The utility model changes the two columns of traditional shock absorber testing table and adds the vertical structure of crossbeam, and adopts horizontal type structure, lowers the center of gravity, and is convenient to measured piece and installs.
Adopt variable-frequency motor 2 to drive,, play the speed stabilizing effect and make the test speed held stationary by live axle 17 and big belt wheel 19 double as flywheels.
The beneficial effects of the utility model are:
1, simple in structure, be easy to processing and manufacturing, cost is lower, and the precision height exempts to lubricate.
2, on the excentric shaft of driving wheel, adopt duplex bearing single load bearing mode respectively, eliminate the gap when guaranteeing the exciting break-in and keep the driving bearing outer ring with the shelves bar between be rolling friction, reduce the direction finding friction force of driving process generation.
3, change the two columns of traditional shock absorber testing table and add the vertical structure of crossbeam, and adopt horizontal type structure, lower the center of gravity, be convenient to measured piece and install.
Description of drawings
Accompanying drawing 1 is the utility model front section view;
Accompanying drawing 2 is left views of Fig. 1;
Accompanying drawing 3 is vertical views of Fig. 1;
Accompanying drawing 4 is the A-A cut-open views among Fig. 1;
Accompanying drawing 5 is the B-B cut-open views among Fig. 1;
Accompanying drawing 6 is C-C cut-open views of Fig. 2.
1, abutment body 16, line slideway 30, T type grooved screw
2, motor base 17, live axle 31, feather key
3, variable-frequency motor 18, eccentric disc 32, line slideway seat
4, nut 19, big belt wheel 33, guide rail base plate
5, sensor support base 20, rule 34a, spacer
6, screw mandrel 21, flange cover 34b, spacer
7, bearing seat 22, round nut 35, joint
8, handwheel 23, supporting seat 36, slide unit
9, blind flange 24, ball bearing 37, scrambler
10, force transducer 25a, bearing pin 38, flexible clutch
11, head anchor clamps 25b, bearing pin 39, scrambler support
12, vibroshock 26, back shelves bar 40, small pulley
13, afterbody anchor clamps 27, register pin
14, preceding shelves bar 28, excentric shaft
15, duplex bearing 29, slide unit bearing
Embodiment
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a front view, as seen from the figure, this testing table is made up of abutment body 1, driving variable-frequency motor 3, small pulley 40, big belt wheel 19, live axle 17, eccentric disc 18, excentric shaft 28, slide unit 36, line slideway 16, force transducer 10 screw mandrels 6, nut 4, position adjusting mechanism etc.; Radial force transducer 10 is connected by blind flange 9 and sensor support base 5.
Fig. 2 is a left view, and motor 3 places on the motor base 2 in the abutment body 1, and power is passed to big belt wheel 19 by small pulley 40 by the V-belt, adopts the transmission of reduction of speed band can increase driving torque, and keeps robust motion.T type groove on the motor base 2 can change the installation site of variable-frequency motor 3, thereby realizes the tensioning of V-belt.
Fig. 3 is a vertical view, as seen from the figure, places the variable-frequency motor 3 in the abutment body 1 by the band transmission power to be reached live axle 17.Tested vibroshock 12 is installed between head anchor clamps 11 and the afterbody anchor clamps 13, and afterbody anchor clamps 13 are connected with slide unit 36 by joint 35 and register pin 27.When tested vibroshock 12 installation lengths change, need to adjust the position of sensor support base 5, unclamp 4 T type grooved screws 30 earlier, the handwheel 8 outside the rotation axis bearing 7, drive nut 4 movable sensor bearings 5 by screw mandrel 6, determine displacement by two feather keys 31 according to rule 20 when mobile.
Fig. 4 is the A-A cut-open view of vibroshock testing table vibrator and force application apparatus, driving force reaches live axle 17 by big belt wheel 19, live axle 17 is supported by supporting seat 23,21 and two angular contact ball bearings of flange cover 24, realize pretension by interior outer separator 34a, 34b length dimension difference, implement fixing by two round nuts 22.Link by flexible clutch 38 and the scrambler 37 that is installed on the scrambler support 39 in live axle 17 outer ends, embedded eccentric disc 18 of its disk and excentric shaft 28, the duplex bearing 15 on the excentric shaft 28 drive slide units 36 by preceding shelves bar 14 and back shelves bar 26 respectively and do simple harmonic quantity and move toward complex line along being installed in line slideway 16 on the guide rail base plate 33.
The eccentric throw of excentric shaft 28 relative live axles 17 has level adjustable, in most cases, as long as satisfy the eccentric throw that has level to adjust, just can satisfy the requirement of test trip as 5mm, 10mm, 15mm, 20mm, 25mm etc.Screw in the radially-arranged some paired pin-and-holes of eccentric disc 18 circumference by two threaded bearing pin 25a being provided with on the live axle 17 and bearing pin 25b and realize transmitting moments of torsion and eccentric disc 18 location.
Fig. 5 is the cut-open view of force transducer position adjustment structure, and as seen from the figure, sensor support base 5 is connected with abutment body 1 usefulness T type grooved screw 30.
Fig. 6 is to be the C-C cut-open view of Fig. 2, main expression drive slide unit 36 excentric shaft 28 and on duplex bearing 15 at the mounting structure of preceding shelves bar 14 and back shelves bar 26.
Claims (6)
1. harmonic excitation testing table, comprise by at the built-in variable-frequency motor (3) of abutment body (1), drive live axle (17) by small pulley (40) and big belt wheel (19), it is characterized in that: on the disk of live axle (17), be embedded with eccentric disc (18) and excentric shaft (28), and, by preceding shelves bar (14) and the back shelves bars of being located on the slide unit (36) (26) exciting force is put on tested vibroshock (12) respectively by the duplex bearing (15) that places on the outer excentric shaft of surveying (28) of eccentric disc (18); Described slide unit (36) is finished test by scrambler (37) that links to each other with live axle (17) end and force transducer (10) cooperation by line slideway (16) guiding during test; On abutment body (1), also be mounted with sensor support base (5).
2. a kind of harmonic excitation testing table according to claim 1, it is characterized in that: the excentric shaft (28) on described live axle (17) disk is gone up and is adopted duplex bearing (15) to be single load bearing, is rolling friction between the outer ring of the driving bearing in the described duplex bearing (24) and preceding shelves bar (14) and the back shelves bars (26).
3. a kind of harmonic excitation testing table according to claim 1 and 2, it is characterized in that: the eccentric throw of the relative live axle (17) of described excentric shaft (28) is for there being level adjustable, (25a 25b) screws in the radially-arranged some paired pin-and-holes of eccentric disc (18) circumference and realizes transmitting moment of torsion and eccentric disc (18) location to go up two threaded bearing pins that are provided with by live axle (17).
4. a kind of harmonic excitation testing table according to claim 1 is characterized in that: described line slideway (16) adopts two as the shock motion guiding.
5. a kind of harmonic excitation testing table according to claim 1, it is characterized in that: described sensor support base (5) can slide in abutment body (1) upper trapezoid groove so that adjust the position, provide guiding by feather key (31) when moving, rely on handwheel (8) to drive the convenient realization of screw mandrel (6) nut (4).
6. a kind of harmonic excitation testing table according to claim 1 is characterized in that: described abutment body (1) adopts horizontal, to lower the center of gravity, is convenient to the installation of tested vibroshock (12); Big belt wheel (19) and live axle (17) double as flywheel play the speed stabilizing effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200460123U CN201083616Y (en) | 2007-09-11 | 2007-09-11 | Simple harmonic excitation test stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200460123U CN201083616Y (en) | 2007-09-11 | 2007-09-11 | Simple harmonic excitation test stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083616Y true CN201083616Y (en) | 2008-07-09 |
Family
ID=39626084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200460123U Expired - Fee Related CN201083616Y (en) | 2007-09-11 | 2007-09-11 | Simple harmonic excitation test stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083616Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445353A (en) * | 2011-10-10 | 2012-05-09 | 江苏科技大学 | Mechanical simple harmonic excitation device |
| CN106933089A (en) * | 2017-03-23 | 2017-07-07 | 天王电子（深圳）有限公司 | A kind of wrist-watch uses reliability test machine and its method of testing |
| CN109060337A (en) * | 2018-08-31 | 2018-12-21 | 朋志鹏 | A kind of automobile strand tooth shock absorber detection device |
| CN111583761A (en) * | 2020-05-29 | 2020-08-25 | 安徽威龙电力器材有限公司 | Experimental demonstration device and method for simulating vibration of damper |
-
2007
- 2007-09-11 CN CNU2007200460123U patent/CN201083616Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445353A (en) * | 2011-10-10 | 2012-05-09 | 江苏科技大学 | Mechanical simple harmonic excitation device |
| CN106933089A (en) * | 2017-03-23 | 2017-07-07 | 天王电子（深圳）有限公司 | A kind of wrist-watch uses reliability test machine and its method of testing |
| CN106933089B (en) * | 2017-03-23 | 2019-07-02 | 天王电子（深圳）有限公司 | A kind of wrist-watch use reliability energy test machine and its test method |
| CN109060337A (en) * | 2018-08-31 | 2018-12-21 | 朋志鹏 | A kind of automobile strand tooth shock absorber detection device |
| CN111583761A (en) * | 2020-05-29 | 2020-08-25 | 安徽威龙电力器材有限公司 | Experimental demonstration device and method for simulating vibration of damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201083616Y (en) | Simple harmonic excitation test stand | |
| CN107271180B (en) | Planetary roller screw comprehensive loading test device | |
| CN111307437B (en) | Rotary tribology behavior simulation test bed for realizing vibration decoupling | |
| CN113466037B (en) | Integrated tester for dynamic and static mechanical properties of clamp and application method thereof | |
| CN202119623U (en) | Alternate load joint bearing life testing machine | |
| CN109632161B (en) | Rolling bearing friction torque testing machine | |
| CN106111512A (en) | Eccentric throw radial adjustable inertia vibration generator and application thereof | |
| CN103808508B (en) | Double-deck double lead-screw formula ball screw assembly, comparative trial of life-span platform | |
| AU2020273297A1 (en) | Method and Device for Measuring an Axial Displaceability of a Rotatably Mounted Shaft | |
| CN102152261A (en) | Centering, positioning, self-locking and clamping device used in automatic press mounting special machine of automobile transmission shaft | |
| CN102359875B (en) | Multifunctional link dynamic experiment platform | |
| CN105223013B (en) | A kind of suspension matching system is test bed | |
| EP2862670A1 (en) | A counterforce mechanism and methods of operation thereof | |
| CN102943720A (en) | Supporting mechanism of engine of large slenderness ratio rocket engine running support | |
| CN104359782A (en) | Abrasion tester | |
| CN212228697U (en) | Rotary tribology behavior simulation test bed for realizing vibration decoupling | |
| CN201083615Y (en) | Shock absorber test stand for motorcycle | |
| CN105806179B (en) | Length measurement method and its device under a kind of truck drive shaft constant pressure | |
| CN104406790A (en) | Static load test bench of overload couplers | |
| CN201871872U (en) | Clamp device for welding silicon oil torque vibration damper by laser | |
| CN202710426U (en) | Flexural fatigue testing machine | |
| CN115597896A (en) | Multi-angle parameter testing device for bogie suspension component | |
| CN106769034B (en) | Bearing accelerated life test bed | |
| WO2009108031A1 (en) | Device for the measurement of the influence of friction force on the wear characteristics of material surface | |
| CN201136108Y (en) | Double-eccentric wheel post rod vibration mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20110911 |