CN206695773U - The initial failure of linear displacement transducer excludes experimental rig - Google Patents
The initial failure of linear displacement transducer excludes experimental rig Download PDFInfo
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- CN206695773U CN206695773U CN201720337807.3U CN201720337807U CN206695773U CN 206695773 U CN206695773 U CN 206695773U CN 201720337807 U CN201720337807 U CN 201720337807U CN 206695773 U CN206695773 U CN 206695773U
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Abstract
The initial failure of linear displacement transducer excludes experimental rig and belongs to fault detection technique field, it is therefore intended that solves the problems, such as that initial failure inspection can not be carried out to linear displacement transducer existing for prior art.The utility model includes failure excitation apparatus, and humiture test box therein is divided into two layers up and down by dividing plate, and shake table is located at humiture test box lower floor, and upper surface extend into upper strata, and frequency-variable controller is fixed on humiture test box upper surface；Positioned at humiture test box upper strata and it is fixed on the common environment erecting bed of shake table upper surface, structure identical environment subelement altogether is arranged side by side including 2n in environment erecting bed altogether, each environment subelement altogether includes the relative upper slide and lower skateboard being slidably matched, and two linear displacement transducers are set in parallel in upper slide upper surface along upper slide length direction；Connected with the upper slide of common environment erecting bed and drive its reciprocating driving and stroke adjusting device, the distance of reciprocal number and motion is measured by movement detecting mechanism.
Description
Technical field
The utility model belongs to fault detection technique field, and in particular to one kind is based on the adjustable slider-crank mechanism of stroke
Linear displacement transducer initial failure exclude experimental rig.
Background technology
Linear displacement transducer is a kind of very important displacement measurement sensor, its integrated optical, is both mechanically and electrically led
The technology in domain is widely used in one in numerous areas such as radar, robot, Digit Control Machine Tools.As linear displacement transducer should
With the change of scope is wide and application field increases, to its precision and reliability requirement also more and more higher.Straight-line displacement passes
The practical service environment of sensor is more severe.Often subject temperature, humidity, vibration, electromagnetic interference etc. it is all it is multi-environment should
The influence of power, plus defect present in itself manufacture assembling, it is easy to various failures occur.Linear displacement transducer once goes out
Existing failure, the operation for complete machine have uncertain influence, and this influence is possibly even catastrophic.Therefore, to straight
Linear movement pick-up carries out initial failure and excludes experiment, is had great significance with improving its reliability for society.
At present, device and the experimental technique that initial failure exclusion experiment can be carried out to linear displacement transducer are less.Only
There is the relevant apparatus that exfactory inspection is carried out to linear displacement transducer in small part enterprise.For being specifically imposed by stress to excite its morning
The experimental rig of phase failure still counts blank.Inspection exclusion can not be carried out to the initial failure of linear displacement transducer.
Utility model content
The purpose of this utility model is to propose that a kind of initial failure of linear displacement transducer excludes experimental rig, solves
The problem of can not carrying out initial failure inspection to linear displacement transducer existing for prior art, by linear displacement transducer
Apply temperature, humidity, vibration and electromagnetic interference environment stress and excite linear displacement transducer initial failure, and then to straight-line displacement
Sensor carries out detection experiment.
To achieve the above object, the initial failure of linear displacement transducer of the present utility model, which excludes experimental rig, includes：
Failure excitation apparatus, the failure excitation apparatus includes humiture test box, shake table and frequency-variable controller, described
The dividing plate that humiture test box is set by centre is divided into two regions, the shake table up and down and is located at the humiture test box
Lower floor, upper surface extend into upper strata through the dividing plate, and the frequency-variable controller is fixed on the humiture test box upper surface,
Humiture test box and shake table are controlled by humiture case control system and vibration bench control system respectively；
Positioned at humiture test box upper strata and the common environment erecting bed of shake table upper surface is fixed on, the environment altogether is installed
Platform includes 2n and structure identical environment subelement altogether is arranged side by side, and each environment subelement altogether includes relative be slidably matched
Upper slide and lower skateboard, two linear displacement transducers are set in parallel in upper slide upper surface along upper slide length direction, often
Correspondence position is provided with a linear displacement transducer reading head, the linear displacement transducer above individual linear displacement transducer
Reading head is fixed on reading head location-plate, and the side wall of the reading head location-plate and the lower skateboard is fixed, the lower skateboard
It is fixed on the upper surface of the shake table；
External testing stand on the ground is set；
It is arranged on the driving simultaneously connected on external testing stand with the common environment erecting bed and stroke adjusting device, the drive
Dynamic and stroke adjusting device includes n and is arranged side by side the driving of structure identical and stroke adjustment subelement, each driving and
Stroke adjustment subelement include being fixed on the main support platform of external testing stand upper surface, motion work, slider-crank mechanism,
Movement detecting mechanism and push rod；The main support platform sets two the second parallel guide rails, the motion transmission along its length
Mechanism drives the second sliding block in two groups of slider-crank mechanisms to be moved back and forth along two the second guide rails simultaneously, every group of crank block machine
Structure is fixedly connected by one end of a push rod and the upper slide length direction of a common environment subelement, a motion inspection
Survey mechanism and gather the reciprocal number of the second sliding block of a slider-crank mechanism and the distance moved；N driving and stroke adjustment
The power intake of the motion driving mechanism of subelement is sequentially connected by yielding coupling, and is driven and transported by servomotor
Dynamic, servomotor is connected with frequency-variable controller；
And control system, the control system respectively with linear displacement transducer reading head, movement detecting mechanism and change
Frequency controller connects.
The upper slide and lower skateboard are slidably matched specially：The lower skateboard upper surface is provided with two along its length
The first parallel guide rail, each first guide rail and first sliding block are slidably matched, the first upper end of slide block face and upper slide
Lower surface be fixedly connected.
Described two linear displacement transducers are set in parallel in upper slide upper surface along upper slide length direction：Institute
State upper slide upper surface and be provided with two locating slots along its length, two slip limited blocks, institute are provided with each locating slot
State slip limited block and the locating slot is slidably matched, and fixed by puller bolt, linear displacement transducer is arranged on positioning
In groove, both ends are spacing by sliding limited block.
The motion work includes：
Big driving wheel, by key connection, the rear axle is connected with back seat by bearing, described for the big driving wheel and rear axle
Back seat is fixed on main support platform；
The middle runner connected with the big driving wheel by belt, the middle runner and front axle are by key connection, before described
Axle is connected with front stall by bearing, and the front stall is fixed on main support platform；
And the two small driving wheels connected with the interference of front axle both ends, each small driving wheel and slider-crank mechanism
Crank connects；
The rear axle of n driving and the motion work in stroke adjustment subelement is sequentially connected by yielding coupling,
Rear axle positioned at side is connected by yielding coupling with servomotor.
The slider-crank mechanism includes：
Fixed arm, the fixed arm are provided with elongated slot along its length, and described fixed arm one end is enclosed on motion work
Preceding shaft end, and be fixed by screws on small driving wheel, the end of the front axle connects with shaft end limit block；
The telescopic arm that the elongated slot of one end and the fixed arm is slidably matched, described telescopic arm one end are provided with itself vertical axle
The through hole of line, the positive locking plate with major axis are clamped or unclamped and fix through the elongated slot of fixed arm and the threaded connection of secondary locking plate
Arm, the major axis of the positive locking plate are threadedly coupled through the through hole and stop nut of telescopic arm end, the telescopic arm end
The major axis of through hole and the positive locking plate is rotatably assorted；
The forearm being slidably matched with the telescopic arm other end, the forearm are hollow structure, side wall relative position length
Direction is provided with two notches, and the telescopic arm is deep into forearm, and the screwed ears lock sleeve of ears and telescopic arm go deep into
Welded to one end of antetheca, the ears of ears lock sleeve stretch out from the both sides notch of forearm, and respectively with a locking wheel screw thread
Connection, realizes the locking or release of telescopic arm and forearm relative position；
The one of the reflecting target support being connected through the hinge with the forearm other end, the reflecting target support and the push rod
End is fixedly connected；
And the second sliding block being fixedly connected with the reflecting target support, second on second sliding block and main support platform
Guide rail is slidably matched.
The movement detecting mechanism includes：
The reflecting target being fixed on reflecting target support, the reflecting target and the direction of motion are vertical；
Laser range finder on main support platform, the measurement head of the laser range finder and the reflecting target are relative,
The laser range finder and control system electrical connection；
And the reciprocal counter installed in main support platform front end, push rod pass through the measurement port of the reciprocal counter,
The reciprocal counter and control system electrical connection.
The value of the n is 4.
A damper is provided with each push rod.
The humiture test box upper strata is by closing door termination.
Sealed between dividing plate in the shake table upper surface and humiture test box with temperature insulating material.
Operation principle of the present utility model is：Turn on the power, start humiture test box and shake table, the control of humiture case
System be in Wait Order state with vibration bench control system, sets the environmental stress conditions for needing to load, opening servomotor and
Frequency-variable controller, after suitable rotary speed parameter is set, carries out initial failure and exclude experiment, the power of servomotor by rear axle and
Bearing passes to each driving and stroke adjustment subelement, big driving wheel impart power to middle runner, middle runner by belt
Power is forwarded to by small driving wheel by front axle.Fixed arm, the slider-crank mechanism of telescopic arm and forearm composition is by small driving wheel
Rotational motion be converted into the reciprocating motion of push rod, push rod drives the motion of environment erecting bed upper slide altogether, so as to drive straight line
The reciprocating motion of displacement transducer blade.The relative position of reflecting target relative laser rangefinder is measured in reciprocatory movement in real time
As the calibration value of corresponding linear displacement transducer relative motion, number is moved back and forth by reciprocal counter measures.
The beneficial effects of the utility model are：
1st, the initial failure exclusion experimental rig of linear displacement transducer of the present utility model can be realized straight to different length
The simultaneous test of linear movement pick-up, designed driving and stroke adjusting device can be according to the realities of tested linear displacement transducer
Border length, the brachium of slider-crank mechanism is adjusted, to meet the test trip of corresponding length linear displacement transducer.This practicality is new
Type designs four independent drivings and stroke adjustment subelement altogether, each driving and stroke adjustment subelement can simultaneously to two not
Linear displacement transducer with length is tested.Once mounting can test the straight-line displacement sensing of 16 different lengths simultaneously
Device, test efficiency are high；
2nd, the utility model takes into full account the designed reliability of device, and drive device and failure excitation apparatus are separated, main
Testing stand is placed in outside humiture case, is avoided putting on the environmental stress on linear displacement transducer and is acted on by mistake on Master Test Station,
Improve device service life.It is fixed tested straight that designed common environment erecting bed is exclusively used in the installation under humiture and vibration environment
Linear movement pick-up.
3rd, the utility model design takes into full account maintenance accessi bility, using modularized design, four drivings and stroke adjustment
Subelement independent operating, each driving and stroke adjustment subelement drive two linear displacement transducer operations.If some
Driving and stroke adjustment subelement are met failure and are damaged, and can individually take maintenance apart, do not influence other drivings and stroke adjustment is single
The operation test of member.
4th, demarcation of the higher laser displacement sensor of the utility model service precision as linear displacement transducer displacement
Value, contrasts the output valve of linear displacement transducer, judges that linear displacement transducer has fault-free to analyze.The reciprocal counting of installation
Sensor can record the reciprocal time of linear displacement transducer reading head, refine test data, be at the data analysis in later stage
Reason provides basis.
5th, the utility model uses high performance humiture test box and shake table as failure excitaton source, to tested straight
Linear movement pick-up applies the environmental stress of various dimensions.Frequency converter is as electromagnetic interference equipment, answering when simulating actual use
General labourer's condition.Simple mechanical slider-crank mechanism reliability is higher, improves the service life of testing stand itself.
Brief description of the drawings
Fig. 1 is that the initial failure of linear displacement transducer of the present utility model excludes axle survey when experimental rig hides closing door
Figure；
Fig. 2 is that the initial failure of linear displacement transducer of the present utility model excludes experimental rig axonometric drawing；
Fig. 3 is that the initial failure of linear displacement transducer of the present utility model excludes failure excitation apparatus knot in experimental rig
Structure schematic diagram；
Fig. 4 is that the initial failure of linear displacement transducer of the present utility model excludes driving and stroke adjustment in experimental rig
Device and altogether environment erecting bed overall structure diagram；
Fig. 5 is that the initial failure of linear displacement transducer of the present utility model excludes common environment subelement knot in experimental rig
Structure schematic diagram；
Fig. 6 is that the initial failure of linear displacement transducer of the present utility model excludes driving and stroke adjustment in experimental rig
Sub-unit structure schematic diagram；
Fig. 7 is that the initial failure of linear displacement transducer of the present utility model excludes driving and stroke adjustment in experimental rig
Subelement part explosive view；
Wherein：1st, humiture test box, 2, shake table, 3, humiture case control system, 4, vibration bench control system, 5, become
Frequency controller, 6, external testing stand, 7, driving and stroke adjusting device, 8, environment erecting bed altogether, 9, servomotor, 10, damping
Device, 11, main support platform, 12, laser range finder, 13, reciprocal counter, 14, push rod, the 15, second guide rail, 16, reflecting target, 17,
Reflecting target support, 18, hinge, the 19, second sliding block, 20, forearm, 21, locking wheel, 22, telescopic arm, 23, stop nut, 24, secondary
Locking plate, 25, fixed arm, 26, positive locking plate, 27, shaft end limit block, 28, screw, 29, small driving wheel, 30, middle runner, 31,
Front stall, 32, belt, 33, big driving wheel, 34, upper slide, 35, slide limited block, 36, linear displacement transducer, 37, straight line position
Displacement sensor reading head, 38, reading head location-plate, the 39, first guide rail, 40, lower skateboard, the 41, first sliding block, 42, back seat, 43,
Rear axle, 44, ears lock sleeve, 45, front axle, 46, yielding coupling.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1- accompanying drawings 4, the initial failure of linear displacement transducer of the present utility model, which excludes experimental rig, to be included：
Failure excitation apparatus, the failure excitation apparatus include humiture test box 1, shake table 2 and frequency-variable controller 5,
The dividing plate that the humiture test box 1 is set by centre is divided into two regions, the shake table 2 up and down and is located at the humiture
The lower floor of chamber 1, upper surface extend into upper strata through the dividing plate, and the frequency-variable controller 5 is fixed on the Humidity Test
The upper surface of case 1, humiture test box 1 and vibration are controlled by humiture case control system 3 and vibration bench control system 4 respectively
Platform 2；The upper strata of humiture test box 1 is by closing door termination；In the upper surface of shake table 2 and humiture test box 1
Sealed between dividing plate with temperature insulating material；Described humiture test box 1 uses the damp and hot combined test chamber of THV-600-A high/low temperatures,
Dividing plate in humiture test box 1 is provided with through hole, and through-hole diameter is more than the upper surface of shake table 2.Chamber lower floor is used to place
Shake table 2, upper strata are used to place common environment erecting bed 8, and upper strata swept volume is 0.6m3, temperature regulating range be -40 degree~
150 degree, humidity regulation scope is 20%~98%RH, and humiture test box 1 is become by temperature, humidity, temperature change, humidity
Change all kinds of failures for exciting linear displacement transducer 36；Described shake table 2 is using DC-600-6 electric vibration tables 2, shake table 2
Specified sinusoidal thrust be 6KN, peak acceleration 980m/s2, maximum load 200kg.Shake table 2 is used to excite because of vibration
Caused 36 all kinds of failures of linear displacement transducer；Described frequency-variable controller 5 is the frequency converter of servomotor 9, mainly there is two
The function of aspect.One is the speed control unit as motor, on the other hand, the electromagnetism as linear displacement transducer 36 is done
Disturb device and electromagnetic interference stress is applied to tested linear displacement transducer 36；
Positioned at the upper strata of humiture test box 1 and the common environment erecting bed 8 of the upper surface of shake table 2 is fixed on, it is described to be total to environment
Structure identical environment subelement altogether is arranged side by side including eight in erecting bed 8, and each environment subelement altogether includes relatively sliding
The dynamic upper slide 34 and lower skateboard 40 coordinated, two linear displacement transducers 36 are set in parallel in along the length direction of upper slide 34
The upper surface of slide plate 34, each top correspondence position of linear displacement transducer 36 are provided with a linear displacement transducer reading head
37, the linear displacement transducer reading head 37 is fixed on reading head location-plate 38, the reading head location-plate 38 and described
The side wall of lower skateboard 40 is fixed, and mounting hole is provided with the lower skateboard 40, and the upper surface of shake table 2 is also equipped with installing
Lower skateboard 40 is fixed on the upper surface of the shake table 2 by hole, the mounting hole of bolt through the lower skateboard 40 and shake table 2；
External testing stand 6 on the ground is set；
The simultaneously driving with the connection of environment erecting bed 8 altogether and stroke adjusting device 7, institute are arranged on external testing stand 6
State driving and stroke adjusting device 7 and the driving of structure identical and stroke adjustment subelement is arranged side by side including four, it is each described
Driving and stroke adjustment subelement include main support platform 11, motion work, the crank for being fixed on the external upper surface of testing stand 6
Slide block mechanism, movement detecting mechanism and push rod 14；The main support platform 11 sets two the second parallel guide rails along its length
15, the motion work drives the second sliding block 19 in two groups of slider-crank mechanisms reciprocal along two the second guide rails 15 simultaneously
Motion, one end that every group of slider-crank mechanism passes through a push rod 14 and the length direction of upper slide 34 of a common environment subelement
It is fixedly connected, the reciprocal number of the second sliding block 19 that a movement detecting mechanism gathers a slider-crank mechanism and motion
Distance；Four driving and stroke adjustment subelement motion driving mechanism power intake by yielding coupling 46 successively
Connection, and connected by the powered motion of servomotor 9, servomotor 9 and frequency-variable controller 5, servomotor 9 is by VFC
Device 5 controls rotating speed；
And control system, the control system respectively with linear displacement transducer reading head 37, movement detecting mechanism and
Frequency-variable controller 5 connects.
The control system of humiture test box 1 in the utility model include temperature sensor, capacitive humidity sensor and
UMC1200 controllers.
Described temperature sensor is SUS304 armouring twin-core Pt100 sensors, to measure the temperature inside the box.
Described humidity sensor is Finland's VAISALA capacitance type humidity sensors, for Relative Humidity Measuring.
Described UMC1200 controllers, 32 railway digital I/O modules and 2 tunnels simulation I/O module are equipped with, there is 9th area high accuracy
PID arithmetic function, can carry out 3 kinds of Self-tuning Systems, and automatic computing obtains optimal PID control coefficient.RJ45 interfaces realize controller with
The connection of detection device, the real-time Transmission of data is ensure that, realizes Centralized Monitoring.
Described vibration bench control system 4 is RC-2000 vibrating controllers, and distributed architecture is used in design, and
Use Low-noise Design Technology, floating number filtering technique and 24 bit resolution ADC/DAC.
Referring to accompanying drawing 5, the upper slide 34 and lower skateboard 40 are slidably matched specially：The upper surface edge of lower skateboard 40
Length direction is provided with two the first parallel guide rails 39, and each first guide rail 39 and first sliding block 41 are slidably matched, institute
The lower surface that the upper surface of the first sliding block 41 is stated with upper slide 34 is fixedly connected.
Described two linear displacement transducers 36 are set in parallel in the upper end mask of upper slide 34 along the length direction of upper slide 34
Body is：The upper surface of upper slide 34 is provided with two locating slots along its length, and two slips are provided with each locating slot
Limited block 35, the slip limited block 35 and the locating slot are slidably matched, and are fixed by puller bolt, straight-line displacement sensing
Device 36 is arranged in locating slot, and both ends are spacing by sliding limited block 35, and the data wire of linear displacement transducer 36 is from reading head
String holes on location-plate 38 picks out.
When carrying out the exclusion experiment of the initial failure of linear displacement transducer 36, linear displacement transducer reading head 37 and reading
Head location-plate 38 and lower skateboard 40 are relatively fixed in failure excitation apparatus.Upper slide 34 is realized in the case where the push rod 14 of connection acts on
Front-rear reciprocation movement, while drive the blade of linear displacement transducer 36 to move reciprocatingly.The reading of linear displacement transducer 36
Head does relatively reciprocating motion relative to blade.
Referring to accompanying drawing 6 and accompanying drawing 7, the motion work includes：
Big driving wheel 33, the big driving wheel 33 and rear axle 43 pass through axle by key connection, the rear axle 43 and back seat 42
Connection is held, the back seat 42 is fixed on main support platform 11；
The middle runner 30 connected with the big driving wheel 33 by belt 32, the middle runner 30 and front axle 45 pass through key
Connection, the front axle 45 are connected with front stall 31 by bearing, and the front stall 31 is fixed on main support platform 11；
And the two small driving wheel 29 connected with the both ends interference of front axle 45, each small driving wheel 29 and a crank block
The crank connection of mechanism；
The rear axle 43 of four drivings and motion work in stroke adjustment subelement by yielding coupling 46 successively
Connection, the rear axle 43 positioned at side are connected by yielding coupling 46 and servomotor 9.
The slider-crank mechanism includes：
Fixed arm 25, the fixed arm 25 are provided with elongated slot along its length, and described one end of fixed arm 25 is enclosed on motion transmission
The end of front axle 45 of mechanism, and be fixed on by screw 28 on small driving wheel 29, the end of the front axle 45 and shaft end limit block
27 connections；
The telescopic arm 22 that the elongated slot of one end and the fixed arm 25 is slidably matched, described one end of telescopic arm 22 are provided with vertically
The through hole of own axes, the elongated slot and secondary locking plate 24 of the positive locking plate 26 with major axis through fixed arm 25 are threadedly coupled, pressed from both sides
Tight or release fixed arm 25, the major axis of the positive locking plate 26 connect through the through hole and the screw thread of stop nut 23 of the end of telescopic arm 22
Connect, the major axis of the through hole of the end of telescopic arm 22 and the positive locking plate 26 is rotatably assorted；In the state of not tightening, just
Locking plate 26 and secondary tight disk can freely adjust the position in elongated slot, in the locked condition, positive locking plate 26 and secondary tight disk two
Side is adjacent to the side section of fixed arm 25, and positive locking plate 26 and secondary tight disk both sides all use friction material, form locking state；
The forearm 20 being slidably matched with the other end of telescopic arm 22, the forearm 20 are hollow structure, and side wall is with respect to position
Put length direction and be provided with two notches, the telescopic arm 22 is deep into forearm 20, the screwed ears lock sleeve 44 of ears
One end welding of antetheca is deep into telescopic arm 22, the ears of ears lock sleeve 44 stretch out from the both sides notch of forearm 20, and point
It is not threadedly coupled with a locking wheel 21, realizes the locking or release of telescopic arm 22 and the relative position of forearm 20；Locking wheel 21 is twisted
Next, locking wheel 21 produces frictional force with the contact portion of forearm 20, causes telescopic arm 22 to be relatively fixed with forearm 20；
The reflecting target support 17 connected with the other end of forearm 20 by hinge 18, the reflecting target support 17 and institute
The one end for stating push rod 14 is fixedly connected, and a damper 10 is provided with each push rod 14；The forearm 20 and the reflecting target
Connected between 16 by hinge 18, so far, power passes to middle runner 30 by big driving wheel 33, then has front axle 45 to pass to small drive
Driving wheel 29.The rotational motion of small driving wheel 29 is converted into the past of reflecting target support 17 by fixed arm 25, telescopic arm 22 and forearm 20
Multiple motion, then common environment erecting bed 8 is connected to by push rod 14, realize the reciprocating motion of linear displacement transducer 36.It is meanwhile fixed
Arm 25 and telescopic arm 22, the relative position of telescopic arm 22 and forearm 20 are all adjustable so that crank block difference stroke is able to reality
It is existing；
And the second sliding block 19 being fixedly connected with the reflecting target support 17, second sliding block 19 and main support platform 11
On the second guide rail 15 be slidably matched.
The movement detecting mechanism includes：
The reflecting target 16 being fixed on reflecting target support 17, the reflecting target 16 are vertical with the direction of motion；
Laser range finder 12 on main support platform 11, the measurement head of the laser range finder 12 and the reflecting target
16 is relative, the laser range finder 12 and control system electrical connection；
And the reciprocal counter 13 installed in the front end of main support platform 11, survey of the push rod 14 through the reciprocal counter 13
Measure port, the reciprocal counter 13 and control system electrical connection.
Control system of the present utility model includes：Switch board and PLC in switch board, industrial computer, data collecting card,
Frequency-variable controller 5 and power supply；
Described PLC downstream ends and laser range finder 12, reflecting target 16, reciprocal counter 13, UMC1200 controllers,
RC-2000 vibrating controllers, frequency-variable controller 5, power supply connection.The control system of humiture test box 1 and Humidity Test
Case 1 is connected, and the controller of shake table 2 is connected with shake table 2, and the power interface and encoder of frequency-variable controller 5 and servomotor 9 connect
Mouth connection, power supply are that tested linear displacement transducer 36 provides power supply.
Described PLC upstream ends are connected with upper industrial computer, installation data capture card in industrial computer, and upper computer software is selected
Labview, temperature value, humidity value, temperature acceleration magnitude, the humidity acceleration of software display interface integrative display humiture case
Travel. value, the umber of reciprocation of reciprocal sensor for countering of value, the vibration values of shake table 2, laser range finder 12 and reflecting target 16
Value.Temperature variation, humidity variable quantity, the vibratory output of shake table 2 can be set in control interface.
The initial failure of linear displacement transducer 36 of the present utility model excludes the specific installation process of experimental rig：First
Linear displacement transducer 36 is installed in common environment erecting bed 8, the blade of linear displacement transducer 36 is positioned on upper slide 34
Locating slot in, the blade both ends of linear displacement transducer 36 are fixed by slip limited block 35.Limited block 35 is slided according to corresponding long
After spending the regulation good position of linear displacement transducer 36, it is fixedly connected with bolt with upper slide 34.
The reading head of linear displacement transducer 36 is fixed on reading head location-plate 38, the number of linear displacement transducer 36
Picked out according to line from the string holes in reading head fixed plate.
After after linear displacement transducer 36, environment erecting bed 8 is fixedly connected together, common environment erecting bed 8 is attached to
In humiture test box 1, mainly by the through hole of the bottom of erecting bed lower skateboard 40 setting, screw 28 and the table top of shake table 2 are used
It is connected, is allowed to be fixed in humiture case.
According to corresponding length linear displacement transducer 36, its corresponding driving and stroke adjusting device 7 are adjusted.Unclamp first
Positive locking plate 26 and secondary locking plate 24, regulation telescopic arm 22 and relative position of the connecting portion of fixed arm 25 in the elongated slot of fixed arm 25
Put.After the completion of adjustment, positive locking plate 26 and secondary locking plate 24 are tightened, positive locking plate 26 and secondary locking plate 24 both sides are all using friction
Property material and be adjacent to the side section of fixed arm 25, form locking state, now, telescopic arm 22 can be in relatively fixed position around fixation
Arm 25 rotates.
Push rod 14 is installed, connects environment erecting bed 8 altogether and driving and stroke adjusting device 7.
For different brands, the linear displacement transducer 36 of different model, due to variable lengths, initial failure exclusion is carried out
During experiment, each reciprocating stroke of linear displacement transducer 36 is different.The present apparatus is suitable for different linear displacement transducers 36 and grown
Each opposite sex is spent, realizes and is carried out by initial failure simultaneously and excludes experiment for different brands, the linear displacement transducer 36 of different model.
A kind of knot that movement travel regulation can be carried out according to the specific length model of linear displacement transducer 36 of the utility model design
Structure, it can be achieved to being tested while 16 different length linear displacement transducers 36.
Claims (10)
1. the initial failure of linear displacement transducer excludes experimental rig, it is characterised in that including：
Failure excitation apparatus, the failure excitation apparatus include humiture test box (1), shake table (2) and frequency-variable controller
(5) dividing plate that, the humiture test box (1) is set by centre is divided into two regions, the shake table (2) up and down and is located at institute
Humiture test box (1) lower floor is stated, upper surface extend into upper strata through the dividing plate, and the frequency-variable controller (5) is fixed on institute
Humiture test box (1) upper surface is stated, passes through humiture case control system (3) and vibration bench control system (4) control temperature respectively
Humid test case (1) and shake table (2)；
Positioned at humiture test box (1) upper strata and the common environment erecting bed (8) of shake table (2) upper surface is fixed on, it is described to be total to ring
Border erecting bed (8) includes 2n and structure identical environment subelement altogether is arranged side by side, and each environment subelement altogether includes phase
To the upper slide (34) and lower skateboard (40) being slidably matched, two linear displacement transducers (36) are along upper slide (34) length direction
Upper slide (34) upper surface is set in parallel in, correspondence position is provided with a straight line position above each linear displacement transducer (36)
Displacement sensor reading head (37), the linear displacement transducer reading head (37) is fixed on reading head location-plate (38), described
The side wall of reading head location-plate (38) and the lower skateboard (40) is fixed, and the lower skateboard (40) is fixed on the shake table (2)
Upper surface；
External testing stand (6) on the ground is set；
The simultaneously driving with the connection of environment erecting bed (8) altogether and stroke adjusting device (7) are arranged on external testing stand (6),
The driving and stroke adjusting device (7) include n and the driving of structure identical and stroke adjustment subelement, Mei Gesuo are arranged side by side
State driving and stroke adjustment subelement main support platform (11), motion transmission machine including being fixed on external testing stand (6) upper surface
Structure, slider-crank mechanism, movement detecting mechanism and push rod (14)；The main support platform (11) set along its length two it is parallel
The second guide rail (15), the motion work simultaneously drive two groups of slider-crank mechanisms in the second sliding block (19) along two
Second guide rail (15) moves back and forth, and every group of slider-crank mechanism passes through a push rod (14) and the upper cunning of a common environment subelement
One end of plate (34) length direction is fixedly connected, and a movement detecting mechanism gathers the second cunning of a slider-crank mechanism
The reciprocal number of block (19) and the distance of motion；The power input of the motion driving mechanism of n driving and stroke adjustment subelement
End is sequentially connected by yielding coupling (46), and passes through servomotor (9) powered motion, servomotor (9) and VFC
Device (5) connects；
And control system, the control system respectively with linear displacement transducer reading head (37), movement detecting mechanism and change
Frequency controller (5) connects.
2. the initial failure of linear displacement transducer according to claim 1 excludes experimental rig, it is characterised in that described
Upper slide (34) and lower skateboard (40) are slidably matched specially：Lower skateboard (40) upper surface is provided with two along its length
Parallel the first guide rail (39), each first guide rail (39) and first sliding block (41) are slidably matched, first sliding block
(41) upper surface is fixedly connected with the lower surface of upper slide (34).
3. the initial failure of linear displacement transducer according to claim 1 or 2 excludes experimental rig, it is characterised in that
Described two linear displacement transducers (36) are set in parallel in upper slide (34) upper end mask body along upper slide (34) length direction
For：Upper slide (34) upper surface is provided with two locating slots along its length, and two slips are provided with each locating slot
Limited block (35), the slip limited block (35) and the locating slot are slidably matched, and are fixed by puller bolt, straight-line displacement
Sensor (36) is arranged in locating slot, and both ends are spacing by sliding limited block (35).
4. the initial failure of linear displacement transducer according to claim 1 excludes experimental rig, it is characterised in that described
Motion work includes：
Big driving wheel (33), the big driving wheel (33) and rear axle (43) pass through key connection, the rear axle (43) and back seat (42)
Connected by bearing, the back seat (42) is fixed on main support platform (11)；
The middle runner (30) connected with the big driving wheel (33) by belt (32), the middle runner (30) and front axle (45) are logical
Key connection is crossed, the front axle (45) is connected with front stall (31) by bearing, and the front stall (31) is fixed on main support platform (11)；
And the two small driving wheel (29) connected with front axle (45) both ends interference, each small driving wheel (29) and a slide crank
The crank connection of block mechanism；
The rear axle (43) of n driving and the motion work in stroke adjustment subelement is connected successively by yielding coupling (46)
Connect, the rear axle (43) positioned at side is connected by yielding coupling (46) and servomotor (9).
5. the initial failure of linear displacement transducer according to claim 4 excludes experimental rig, it is characterised in that described
Slider-crank mechanism includes：
Fixed arm (25), the fixed arm (25) are provided with elongated slot along its length, and described fixed arm (25) one end is enclosed on motion and passed
Front axle (45) end of motivation structure, and being fixed on by screw (28) on small driving wheel (29), the end of the front axle (45) and
Shaft end limit block (27) connects；
The telescopic arm (22) that the elongated slot of one end and the fixed arm (25) is slidably matched, described telescopic arm (22) one end are provided with vertical
The through hole of straight own axes, the positive locking plate (26) with major axis pass through the elongated slot and secondary locking plate (24) screw thread of fixed arm (25)
Connection, clamp or unclamp fixed arm (25), the major axis of the positive locking plate (26) passes through the through hole and limit of telescopic arm (22) end
The major axis of position nut (23) threaded connection, the through hole of telescopic arm (22) end and the positive locking plate (26) is rotatably assorted；
The forearm (20) being slidably matched with the telescopic arm (22) other end, the forearm (20) is hollow structure, and side wall is relative
Position length direction is provided with two notches, and the telescopic arm (22) is deep into forearm (20), the screwed ears lock of ears
Tight set (44) and telescopic arm (22) are deep into one end welding of antetheca, and the ears of ears lock sleeve (44) are from the both sides of forearm (20)
Notch stretches out, and is threadedly coupled respectively with a locking wheel (21), realizes telescopic arm (22) and the lock of forearm (20) relative position
Tight or release；
The reflecting target support (17) connected with the forearm (20) other end by hinge (18), the reflecting target support (17) and
One end of the push rod (14) is fixedly connected；
And the second sliding block (19) being fixedly connected with the reflecting target support (17), second sliding block (19) and main support platform
(11) the second guide rail (15) on is slidably matched.
6. the initial failure of linear displacement transducer according to claim 5 excludes experimental rig, it is characterised in that described
Movement detecting mechanism includes：
The reflecting target (16) being fixed on reflecting target support (17), the reflecting target (16) and the direction of motion are vertical；
Laser range finder (12) on main support platform (11), the measurement head of the laser range finder (12) and the reflection
Relatively, the laser range finder (12) and control system electrically connect target (16)；
And the reciprocal counter (13) installed in main support platform (11) front end, push rod (14) pass through the reciprocal counter (13)
Measurement port, the reciprocal counter (13) and the control system electrically connect.
7. the initial failure of the linear displacement transducer according to any one in claim 1-2 or 4-6 excludes experiment dress
Put, it is characterised in that the value of the n is 4.
8. the initial failure of linear displacement transducer according to claim 1 excludes experimental rig, it is characterised in that each
A damper (10) is provided with push rod (14).
9. the initial failure of linear displacement transducer according to claim 1 excludes experimental rig, it is characterised in that described
Humiture test box (1) upper strata is by closing door termination.
10. the initial failure of linear displacement transducer according to claim 1 excludes experimental rig, it is characterised in that institute
State and sealed with temperature insulating material between the dividing plate in shake table (2) upper surface and humiture test box (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720337807.3U CN206695773U (en) | 2017-03-31 | 2017-03-31 | The initial failure of linear displacement transducer excludes experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337807.3U CN206695773U (en) | 2017-03-31 | 2017-03-31 | The initial failure of linear displacement transducer excludes experimental rig |
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| CN206695773U true CN206695773U (en) | 2017-12-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063155A (en) * | 2017-03-31 | 2017-08-18 | 吉林大学 | The initial failure of linear displacement transducer excludes experimental rig |
| CN108645455A (en) * | 2018-08-15 | 2018-10-12 | 无锡市航鹄科技有限公司 | System and its test method are tested in potentiometer general assembly |
| WO2020046242A3 (en) * | 2018-07-25 | 2020-05-28 | Arkel Elektri̇k Elektroni̇k Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | A sensor and safety system operated with this sensor |
| CN115656656A (en) * | 2022-09-23 | 2023-01-31 | 江苏瑞蓝自动化设备集团有限公司 | Reliability test device and method for electronic component |
-
2017
- 2017-03-31 CN CN201720337807.3U patent/CN206695773U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063155A (en) * | 2017-03-31 | 2017-08-18 | 吉林大学 | The initial failure of linear displacement transducer excludes experimental rig |
| CN107063155B (en) * | 2017-03-31 | 2019-06-04 | 吉林大学 | The initial failure of linear displacement transducer excludes experimental rig |
| WO2020046242A3 (en) * | 2018-07-25 | 2020-05-28 | Arkel Elektri̇k Elektroni̇k Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | A sensor and safety system operated with this sensor |
| CN108645455A (en) * | 2018-08-15 | 2018-10-12 | 无锡市航鹄科技有限公司 | System and its test method are tested in potentiometer general assembly |
| CN108645455B (en) * | 2018-08-15 | 2023-09-15 | 无锡市航鹄科技有限公司 | Potentiometer assembly test system and test method thereof |
| CN115656656A (en) * | 2022-09-23 | 2023-01-31 | 江苏瑞蓝自动化设备集团有限公司 | Reliability test device and method for electronic component |
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