CN206177731U - Displacement constraint's fatigue test device is carried out with stop gear - Google Patents
Displacement constraint's fatigue test device is carried out with stop gear Download PDFInfo
- Publication number
- CN206177731U CN206177731U CN201621044348.1U CN201621044348U CN206177731U CN 206177731 U CN206177731 U CN 206177731U CN 201621044348 U CN201621044348 U CN 201621044348U CN 206177731 U CN206177731 U CN 206177731U
- Authority
- CN
- China
- Prior art keywords
- slide block
- pressurized strut
- proximity switch
- displacement
- spacing
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a displacement constraint's fatigue test device is carried out with stop gear, include: activity execution unit for according to the control command of limit control unit, the testpieces that fatigue test need be carried out in the drive moves repeatedly, spacing unit for displacement to activity execution unit restricts, makes activity execution unit institute driven testpieces carries out reciprocating motion at predetermined displacement within range to can adjust the displacement scope, the limit control unit is connected with activity execution unit, spacing unit respectively, is used for control activity execution unit carries out predetermined removal operation. The utility model discloses a displacement constraint's fatigue test device is carried out with stop gear, it can carry out the regulation of maximum displacement in a flexible way when carrying out fatigue test to the testpieces to low in cost, nimble degree height, convenient to use, replacement parts reliable and simple are favorable to extensive production application, have great production practices meaning.
Description
Technical field
This utility model is related to fatigue test technology field, more particularly to a kind of to carry out displacement constraint with position-limit mechanism
Fatigue experimental device.
Background technology
Fatigue rupture is when under the alternate stress effect far below material strength limit, material occurs the phenomenon of destruction.
The major part and component of aircraft, ship, automobile, dynamic power machine, railway and bridge etc., mostly under the load of circulation change
Frock, fatigue is its main failure mode.Therefore, the fatigue test machinery and knot for bearing cyclic loading all kinds of for design
Structure, becomes important research contents.
At present, fatigue experimental device is stress or the strain for making sample or component bear cycle or change at random, to determine
The device of the index such as fatigue limit and fatigue life.Before product comes into operation, need to carry out sufficient fatigue in the lab
Performance test is examined, and fatigue limit and the fatigue life of product is measured, so as to ensure that product will not go out in actual use
Existing fatigue damage failure.
Electo hydraulic servocontrolled fatigue testing machine is a kind of ripe fatigue experimental device relatively conventional at present, and it is watched using electro-hydraulic
Closed-loop control system is taken, test force, deformation, the isoparametric rate controlled of displacement can be carried out, test operation is convenient, safe and reliable.
But, costly, maintenance cost is also higher for this testing machine price, simultaneously because the configuration of equipment is fixed, because
Maximum load, the maximum displacement that this can be realized is changeless, changes very inconvenient and relatively costly.
Therefore, at present in the urgent need to developing a kind of fatigue experimental device, it can carry out fatigue test to testpieces
When, the regulation of maximum displacement is flexibly carried out, and it is cheap, and degree of flexibility is high, easy to use, it is simple to change part.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of fatigue test dress that displacement constraint is carried out with position-limit mechanism
Put, it when fatigue test is carried out to testpieces, can flexibly carry out the regulation of maximum displacement, and cheap, flexible journey
Degree is high, easy to use, it is simple to change part, is conducive to extensive production application, is of great practical significance.
For this purpose, this utility model provides a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism, including：
Active execution units, for according to the control instruction of spacing control unit, driving to need to carry out the examination of fatigue test
Test part to be moved repeatedly；
Position-limiting unit, for limiting the displacement of active execution units so that the active execution units are driven
Testpieces move back and forth in default displacement range, and displacement range can be adjusted；
Spacing control unit, is connected respectively with active execution units, position-limiting unit, for sending to active execution units
Start control instruction so that active execution units start to drive testpieces to move in vertical direction, and limit described in real-time judge
Bit location detects whether the displacement of the testpieces of acquisition reaches default maximum restraining position or minimum restraining position, if
Reach, then send default control instruction to the active execution units, control the active execution units and perform default shifting
Dynamic operation, drives the testpieces to be moved repeatedly together so as to control the active execution units；
The default displacement range is the displacement between default maximum restraining position and default minimum restraining position
Scope.
Wherein, the active execution units include pressurized strut and pressurized strut commutation adjustment module；
The bottom of the pressurized strut is connected with a head rod；
The top of the pressurized strut has the first mounting base, and first mounting base is arranged on an external stability frame
On frame；
The outer wall upper and lower ends of the pressurized strut have a upper port and a lower port, it is described on
Port and lower port are connected respectively by a hollow pipeline and pressurized strut commutation adjustment module；
The pressurized strut commutation adjustment module is used for the upper port and lower port, alternately applies pressure
With release pressure, the pressurized strut is driven to realize moving back and forth.
Wherein, the pressurized strut commutation adjustment module, for by the upper port air inlet of pressurized strut, giving down row
Pore aerofluxuss, so that the piston rod in pressurized strut is moved down, and by the lower port air inlet of pressurized strut, giving
Upper port aerofluxuss, so that the piston rod in pressurized strut is moved up.
Wherein, the position-limiting unit includes spacing crossbeam, and the spacing crossbeam includes interval and level in vertical direction
The left and right two ends of the upper substrate and lower shoe of placement, the upper substrate and lower shoe are mutually fixed with an installation side plate respectively to be connected
Connect；
Position limiting slide block with horizontal positioned and mobile cunning between the middle part of the middle part of the upper substrate and the lower shoe
Block, the position limiting slide block is located at the top of mobile slide block；
The upper substrate middle part, the center of position limiting slide block are provided through a connecting pole, the top of the connecting pole
Portion is connected with the bottom of the head rod；
The bottom of the connecting pole is connected with the mobile slider top, the bottom centre position of the mobile slide block with
One the second connecting rod connects.
Wherein, the top of the connecting pole has head rod embedded groove, is embedded in the connecting rod embedded groove described
The bottom of head rod；
The top center of the mobile slide block has connecting pole embedded groove, is embedded in the connecting pole embedded groove described
The bottom of connecting pole；
The bottom centre position of the mobile slide block has the second connecting rod embedded groove, is embedded in the connecting pole embedded groove
The top of second connecting rod, the bottom of second connecting rod is connected with the testpieces for needing to carry out fatigue test.
Wherein, the circumferentially-spaced of the middle part of the upper substrate, position limiting slide block, mobile slide block and lower shoe is provided through four
Individual guide post, the upper and lower ends of each guide post are connected respectively by a guide post fixing nut, the guide post
It is gap cooperation between the position limiting slide block and mobile slide block.
Wherein, the middle part of the upper substrate is provided through caging bolt, the caging bolt with interval on position limiting slide block
The partial threads for protruding from upper substrate top surface are connected with a upper limit nut, and the caging bolt protrudes from upper substrate bottom surface
Partial threads are connected with a lower position nut.
Wherein, the spacing control unit includes upper proximity switch, a lower proximity switch and a signal processing module,
The upper proximity switch is arranged on the position limiting slide block, and the lower proximity switch is arranged on the lower shoe of the spacing crossbeam
On；
The upper proximity switch, for judging whether the upper surface for moving slide block reaches default maximum restraining position, such as
Fruit reaches, then send first voltage pulse signal to signal processing module；
The lower proximity switch, for judging whether the lower surface for moving slide block reaches default minimum restraining position, such as
Fruit reaches, then send second voltage pulse signal to signal processing module；
Signal processing module, is connected respectively with the upper proximity switch, the lower proximity switch phase signal of telecommunication, receives for working as
During the voltage pulse signal that the upper proximity switch is sent, send to pressurized strut commutation adjustment module and move downward regulating command,
Control pressurized strut commutation adjustment module drives the pressurized strut to be moved downward；When receiving what the lower proximity switch was sent
During voltage pulse signal, motor adjustment order upwards is sent to pressurized strut commutation adjustment module, control pressurized strut commutation adjusts mould
Block drives the pressurized strut to be moved upwards.
Wherein, the default maximum restraining position for position limiting slide block lower surface, the default minimum restraining position
For lower shoe upper surface.
Wherein, a counting proximity switch, the counting proximity switch and are also equipped with the position limiting slide block
Individual enumerator is connected, and the counting proximity switch is used to judge to move whether slide block reaches default maximum restraining position,
When the position of mobile slide block reaches default maximum restraining position, counting proximity switch is just sent out to the enumerator
Go out voltage pulse signal so that the rolling counters forward is once.
The technical scheme provided from above this utility model, compared with prior art, the utility model proposes
A kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism, it can be when fatigue test be carried out, flexibly to testpieces
The regulation of maximum displacement is carried out, and it is cheap, and degree of flexibility is high, easy to use, it is simple to change part, is conducive to wide
General production application, is of great practical significance.
Description of the drawings
A kind of control of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 1 is provided for this utility model is former
Reason block diagram；
A kind of three-dimensional knot of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 2 is provided for this utility model
Structure schematic diagram；
A kind of control of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 3 is provided for this utility model connects
Connect schematic diagram；
Spacing horizontal stroke in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 4 is provided for this utility model
The dimensional structure diagram of beam；
Spacing horizontal stroke in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 5 is provided for this utility model
The structural representation of the lower shoe of beam；
Fig. 6 is the sectional view along line A-A shown in Fig. 5；
It is mobile in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 7 is provided for this utility model to slide
The dimensional structure diagram of block；
It is mobile in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 8 is provided for this utility model to slide
The top view of block；
Fig. 9 is the sectional view along line B-B shown in Fig. 8；
Connect in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Figure 10 is provided for this utility model
The dimensional structure diagram of post；
Connect in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Figure 11 is provided for this utility model
The left view of post；
Figure 12 is the sectional view along line C-C shown in Figure 11；
It is spacing in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Figure 13 is provided for this utility model
The dimensional structure diagram of slide block；
It is spacing in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Figure 14 is provided for this utility model
The top view of slide block；
It is spacing in a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Figure 15 is provided for this utility model
The upward view of slide block；
Figure 16 is the sectional view along line D-D shown in Figure 15；
In figure, 1 is spacing crossbeam, and 101 is upper substrate, and 102 is lower shoe, and 2 is position limiting slide block, and 3 are mobile slide block, and 4 are
Guide post, 5 is caging bolt, and 6 is connecting pole, and 7 is upper limit nut, and 8 is guide post fixing nut, and 9 is lower position nut, 10
For pressurized strut, 20 is pressurized strut commutation adjustment module；
111 is upper port, and 112 is lower port, and 121 is head rod, and 122 is the second connecting rod, and 13 are
Testpieces, 14 is mounting base, and 15 is proximity switch fairlead, and 16 is installation side plate, and 171 is upper proximity switch installing hole, 172
For lower proximity switch installing hole, 181 is upper proximity switch, and 182 is lower proximity switch, and 183 are counting proximity switch.
Specific embodiment
In order that those skilled in the art more fully understand this utility model scheme, below in conjunction with the accompanying drawings and embodiment
The utility model is described in further detail.
Referring to a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that Fig. 1, this utility model are provided, it is used for
In the case of carrying out displacement constraint with position-limit mechanism, fatigue test is carried out to testpieces, specifically include active execution units 100,
Position-limiting unit 200 and spacing control unit 300, wherein：
Active execution units 100, for according to the control instruction of spacing control unit 300, driving needs to carry out tired examination
The testpieces tested is moved repeatedly, so that the displacement load that testpieces has realizes reciprocation cycle；
Position-limiting unit 200, for limiting the displacement of active execution units 100 so that the active execution units
100 testpieces for being driven in default displacement range (specially：Default maximum restraining position and default minimum are spacing
Displacement range between position) move back and forth, and displacement range can be adjusted；
Spacing control unit 300, is connected respectively with active execution units 100, position-limiting unit 200, for holding to activity
Row unit 100 sends startup control instruction so that active execution units 100 start to drive testpieces to move in vertical direction,
And position-limiting unit 200 described in real-time judge detect obtain testpieces displacement whether reach default maximum restraining position or
Person's minimum restraining position, if reached, to the active execution units 100 default control instruction is sent, and controls the work
Dynamic performance element 100 performs default moving operation, and the testpieces is driven together so as to control the active execution units 100
Moved repeatedly, the final displacement load that testpieces is had realizes reciprocation cycle.If being not reaching to default maximum
Restraining position or minimum restraining position, then control the active execution units 100 and keep the former direction of motion to continue to move.
In this utility model, referring to Fig. 2, Fig. 3, the active execution units 100 include that pressurized strut 10 and pressurized strut are changed
To adjustment module 20.
The bottom of the pressurized strut 10 is connected with a head rod 121, inside specially described pressurized strut 10
The piston rod bottom that vertical direction is arranged is connected with the head rod 121.
The top of the pressurized strut 10 has the first mounting base 141, and first mounting base 141 is arranged on outside one
On portion's fixed frame, realize that position is fixed.
The outer wall upper and lower ends of the pressurized strut 10 have a upper port 111 and a lower port
112, the upper port 111 and lower port 112 are commutated respectively by a hollow pipeline 113 and the pressurized strut
Adjustment module 20 is connected；
The pressurized strut commutation adjustment module 20, for the upper port 111 and lower port 112, replacing
Ground applies pressure and release pressure (applying pressure to a hole, then then discharge pressure to another hole), so as to drive
State pressurized strut 10 (piston rod specially in pressurized strut) to realize moving back and forth.Specially：Pressurized strut commutation adjustment module 20 is used
In by the air inlet of upper port 111 of pressurized strut 10, the aerofluxuss of lower port 112 being given, so that in pressurized strut 10
Piston rod is moved down；Pressurized strut commutates adjustment module 20 by the air inlet of lower port 112 of pressurized strut 10, to enterprising row
The aerofluxuss of pore 111, so that the piston rod in pressurized strut 10 is moved up.
In this utility model, it should be noted that pressurized strut commutation adjustment module 20 can be using double automatically controlled two
Five electric change valves of position for example, are implemented realizing, can be limited for the uncommon fertile machinery of Ya De visitor global group or Ningbo
The double automatically controlled two-position five-way solenoid directional control valve product of model 4V220-08 of company's production.This solenoid directional control valve is entered by one
QI KOU P, two gas outlet A and B, two air vent R and S compositions, while being controlled by two electromagnetic switch, air inlet therein
Mouth P is connected with source of the gas, and gas outlet A and B are connected respectively with the upper port 111 of the pressurized strut 10 and lower port 112.
When one of electromagnetic switch is closed, air inlet P and gas outlet A, upper port 111 are communicated, gas outlet B, lower intake and exhaust
Hole 112 and air vent S-phase are logical, so as to realize, to the air inlet of upper port 111 of pressurized strut 10, giving the aerofluxuss of lower port 112,
Control pressurized strut 10 is (i.e. downward) mobile to a direction；When another electromagnetic switch is closed, air inlet P and gas outlet B, under
Port 112 is communicated, and gas outlet A, upper port 111 and air vent R are communicated, so as to give the lower port of pressurized strut 10
112 air inlets, move in the opposite direction (move up) to the aerofluxuss of upper port 111, control pressurized strut 10.
It should be noted that for the pressurized strut 10, it can be by changing airintake direction (such as by upper intake and exhaust
Hole 111 and the alternating air inlet of lower port 112), by the pressure of gas, change the piston that the inside of the pressurized strut 10 has
The moving direction of bar, and cause piston rod movement.
Referring to Fig. 4 to Figure 16, the position-limiting unit 200 includes spacing crossbeam 1, and the spacing crossbeam 1 is included in Vertical Square
The upper substrate 101 and lower shoe 102 of interval and horizontal positioned upwards, the left and right two ends point of the upper substrate 101 and lower shoe 102
Mutually it is not fixedly connected with an installation side plate 16, so as to realize spacing crossbeam 1 effect is rigidly fixed.
Between the middle part of the middle part of the upper substrate 101 and the lower shoe 102 with horizontal positioned position limiting slide block 2 and
Mobile slide block 3, the position limiting slide block 2 is located at the top of mobile slide block 3.
In this utility model, in the lump referring to Figure 10 to Figure 12, the middle part of the upper substrate 101, the centre bit of position limiting slide block 2
Put and be provided through a connecting pole 6, the top of the connecting pole 6 is connected with the bottom of the head rod 121, specifically
For：The top of the connecting pole 6 has head rod embedded groove 60, described first is embedded in the connecting rod embedded groove 60 and is connected
The bottom of extension bar 121.
In the lump referring to Fig. 7 to Fig. 9, the bottom of the connecting pole 6 is connected with the top of the mobile slide block 3, specially：Institute
The top center for stating mobile slide block 3 has connecting pole embedded groove 30, and the connection is embedded in the connecting pole embedded groove 30
The bottom of post 6.
Implement, the bottom centre position of the mobile slide block 3 connects with second connecting rod 122, specially：
The bottom centre position of the mobile slide block 3 has the second connecting rod embedded groove 31, and institute is embedded in the connecting pole embedded groove 30
State the top of the second connecting rod 122.
Implement, the bottom of second connecting rod 122 is connected with the testpieces 13 for carrying out fatigue test is needed,
The bottom of the testpieces 13 is connected with the second mounting base 142, second mounting base 142 be also mounted at one it is described outer
On portion's fixed frame, realize that position is fixed.
In this utility model, the four of the middle part of the upper substrate 101, position limiting slide block 2, mobile slide block 3 and lower shoe 102
Weekly interval is provided through four guide posts 4, and the upper and lower ends of each guide post 4 fix spiral shell by a guide post respectively
Female 8 are connected, and are gap cooperation between the guide post 4 and the position limiting slide block 2 and mobile slide block 3, while ensureing what is coordinated
Axiality so that the regulation of position limiting slide block 2 and the reciprocating motion of mobile slide block 3 can only be in vertical direction, it is to avoid produce along axle
To rotation and horizontal direction inclination.
In this utility model, middle part and the interval on position limiting slide block 2 of the upper substrate 101 are provided through caging bolt
5, the caging bolt 5 protrudes from the partial threads of the top surface of upper substrate 101 and is connected with a upper limit nut 7, the spacing spiral shell
Bolt 5 protrudes from the partial threads of the bottom surface of upper substrate 101 and is connected with a lower position nut 9, therefore, as shown in Fig. 2 fatigue test
Personnel can realize the slow regulation to the position of position limiting slide block 2, so as to true by fine setting upper limit nut 7 and lower position nut 9
The utility model that breaks even carries out the satisfactory precision of size of the displacement of fatigue test to testpieces, realizes with displacement as control ginseng
Number and the adjustable fatigue test of displacement.Behind position required for position limiting slide block 2 is adjusted to fatigue test personnel, fatigue test
Personnel lock upper limit nut 7 and lower position nut 9 simultaneously so that position limiting slide block 2 is entered by caging bolt 5 and spacing crossbeam 1
Row is rigidly connected.
For position-limiting unit 200, implement, the lower shoe 102 of the lower surface of position limiting slide block 2 and spacing crossbeam 1
Upper surface, it is inconsistent by contacting with the upper and lower surface of the mobile slide block 3 respectively, it is single with reference to following spacing controls
The effect of unit 300 and operation principle, realize the control of the concrete shift position to the mobile upper and lower surface of slide block 3, so as to
Realize the Bit andits control of fatigue and cyclic.
Referring to Fig. 3, for this utility model, the spacing control unit 300 includes a upper proximity switch 181,
Lower proximity switch 182 and signal processing module 301, the upper proximity switch 181 be arranged on the position limiting slide block 2 on, it is described under
Proximity switch 182 is arranged on the lower shoe 102 of the spacing crossbeam 1.
Implement, the upper proximity switch 181 is arranged on the position limiting slide block by upper proximity switch installing hole 171
On 2, lower proximity switch 182 is arranged on the lower shoe 102 of the spacing crossbeam 1 by lower proximity switch installing hole 172.
Referring to Figure 15 and Figure 16, the sealed bottom of the upper proximity switch installing hole 171.
It should be noted that proximity switch is a kind of manipulable without the need for carrying out mechanically direct contact with moving component
Position switch, when the sensitive surface of object proximity switch is to operating distance, it is not necessary to Mechanical Contact and any pressure of applying
Switch motion is made, so as to driving DC electric apparatus or providing control instruction to computer installation.
In this utility model, for proximity switch, for judging to move whether slide block 3 reaches spacing position set in advance
(i.e. default distance of reaction) is put, when the position of mobile slide block 3 is reached within the predetermined inductive distance of proximity switch, is close to and is opened
Pass can provide voltage pulse signal.
Wherein, the upper proximity switch 181, for judging whether the upper surface for moving slide block 3 reaches preset upper limit position position
(i.e. aforesaid default maximum restraining position, such as lower surface of position limiting slide block 2) is put, preset upper limit position position is apart from institute
State proximity switch 181 be default distance of reaction position, if reach, send first voltage pulse signal to signal at
Reason module 301；
The lower proximity switch 182, for judging whether the lower surface for moving slide block 3 reaches pre-determined lower limit position position (i.e.
Aforesaid default minimum restraining position, such as upper surface of lower shoe 102), pre-determined lower limit position position is under described
Proximity switch 182 is the position of default distance of reaction, if reached, sends second voltage pulse signal and gives signal processing mould
Block 301.
Signal processing module 301, is connected respectively with the upper proximity switch 181, the phase signal of telecommunication of lower proximity switch 182, uses
In the voltage pulse signal sent according to proximity switch, regulating command is sent to pressurized strut commutation adjustment module 20, specially：With
In when the voltage pulse signal that the upper proximity switch 181 is sent is received, to pressurized strut commutation adjustment module 20 send to
Lower motor adjustment order, control pressurized strut commutation adjustment module 20 drives the pressurized strut 10 to be moved downward；When receiving
During the voltage pulse signal that the lower proximity switch 182 is sent, to pressurized strut commutation adjustment module 20 motor adjustment upwards is sent
Order, control pressurized strut commutation adjustment module 20 drives the pressurized strut 10 (containing piston rod therein) to be moved upwards.
Implement, when the upper surface of mobile slide block 3 reaches pre-determined lower limit position position (such as the lower surface of position limiting slide block 2)
When, upper proximity switch 181 measures signal, and voltage pulse signal is passed to into signal processing module 301, signal processing module 301
Regulating command is moved downward so as to send to pressurized strut commutation adjustment module 20, control pressurized strut commutation adjustment module 20 drives institute
State pressurized strut 10 to be moved downward, specially：Upper port of the control pressurized strut commutation adjustment module 20 to pressurized strut 10
111 air inlets, give the aerofluxuss of lower port 112, so that the piston rod in pressurized strut 10 is moved down, further by connection
Bar 12, connecting pole 6, the linkage effect of mobile slide block 3 so that testpieces 13 is compressed.
Implement, when the lower surface of mobile slide block 3 reaches pre-determined lower limit position position, (such as spacing crossbeam 1 is gone to the bottom
The upper surface of plate 102) when, lower proximity switch 182 measures signal, and voltage pulse signal is passed to into signal processing module 301, letter
, so as to send motor adjustment order upwards to pressurized strut commutation adjustment module 20, control pressurized strut commutation is adjusted for number processing module 301
Section module 20 drives the pressurized strut 10 to be moved upwards, specially：Control pressurized strut commutation adjustment module 20 gives pressurized strut
10 air inlet of lower port 112, gives the aerofluxuss of upper port 111, so that the piston rod in pressurized strut 10 is moved up,
Further acted on by the linkage of connecting rod 12, connecting pole 6, mobile slide block 3 so that testpieces 13 is stretched.It is so all
And renew, under the control of the spacing control unit 300, realize the fatigue for constantly being stretched to testpieces 13 and being compressed
Circulation.
In this utility model, referring to Fig. 3, a counting proximity switch 183 is also equipped with the position limiting slide block 2,
The counting proximity switch 183 is connected with an enumerator, and the counting proximity switch 183 is used to judge to move slide block
Whether 3 reach default maximum restraining position (i.e. default distance of reaction), counts with connecing whenever the position of mobile slide block 3 reaches
When within the predetermined inductive distance of nearly switch 183 (default maximum restraining position, specially move slide block 3 move to it is spacing
During 2 lower surface of slide block), the counting proximity switch 183 just sends voltage pulse signal to the enumerator so that the meter
Rolling counters forward is once.
In this utility model, implement, the upper proximity switch, lower proximity switch and counting proximity switch can
To select the metal approach switch of model E3-D4PAW-40 of the vast photoswitch company limited production in Suzhou, or Shanghai
The metal approach switch of model E3-D4ZB of Tai Wu Electrical Appliances Co., Ltd production, this inductance approach switch, when sensing is visited
When head is less than 4mm with the distance of metal material, a voltage signal will be produced, so as to judge that moving slide block 3 reaches bound
The moment of position.
For this utility model, implement, the signal processing module 301 can be central processor CPU, numeral
Signal processor DSP or single-chip microprocessor MCU.
For this utility model, implement, referring to Fig. 4, there are two pull-switch leads on the upper substrate 101
Hole 15, so as to the lead for facilitating the counting proximity switch 183 and upper proximity switch 181 is derived so that can easily divide
Other linkage counter and signal processing module.
It should be noted that this utility model is a kind of fatigue experimental device, it is therefore desirable to three technical problems of solution
It is：First, the reciprocation cycle of the load of testpieces is realized；2nd, the load of Control experiment part is circulated within the scope of requiring；
3rd, the load of guarantee test part is continuously run and safe and reliable.This utility model adopt solution be, the device mainly by
Three parts are constituted：One is position-limiting unit；Two is the active execution units for including pressurized strut and its commutation adjustment module；Three is bag
Include the spacing control unit of metal inductive proximity switch and pressurized strut commutation control module composition.Wherein, spacing control unit reality
Show the continuous operation of the cyclic loading of testpieces and automatically control, active execution units realize the displacement load that testpieces has
Reciprocation cycle, position-limiting unit realizes that the displacement of testpieces is moved within the scope of requiring.
For a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that this utility model is provided, it is possible to achieve
The fatigue test to testpieces with displacement as control parameter, and the displacement of testpieces is adjustable, and each ingredient
Can easily be changed, so as to realize the fatigue test to testpieces of different size, different loads requirement.This practicality
The new foundation for fatigue experimental device is building for most base structure, can meet the need of simple experiment on fatigue properties
Will, compared with conventional electro-hydraulic servo fatigue test piece, this design can realize that degree of flexibility is high, easy to use, more again
Change part simple.And this apparatus cost is cheap, the needs of medium and small laboratory establishment fatigue test system are especially suitable for.
Therefore, a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism that this utility model is provided, it can be with
Realize being circulated the control of displacement with position-limit mechanism in extremely flexible form, the loading end of testpieces is realized with pressurized strut
Iterative motion, above proximity switch and lower proximity switch are judging respectively the displacement (moving the displacement of slide block) of testpieces
Whether reach default setting, and then the reciprocating motion to pressurized strut provides control signal, such that it is able to conveniently realize with
Displacement is control parameter and the adjustable cycling fatigue experiment of displacement, and apparatus cost is cheap, simple structure, change convenient, can
It is applied widely.
In sum, compared with prior art, one kind that this utility model is provided carries out displacement constraint with position-limit mechanism
Fatigue experimental device, it when fatigue test is carried out to testpieces, can flexibly carry out the regulation of maximum displacement, and cost
Cheap, degree of flexibility is high, easy to use, it is simple to change part, is conducive to extensive production application, with great production
Practice significance.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of fatigue experimental device that displacement constraint is carried out with position-limit mechanism, it is characterised in that include：
Active execution units (100), for according to the control instruction of spacing control unit (300), driving needs to carry out tired examination
The testpieces tested is moved repeatedly；
Position-limiting unit (200), for limiting the displacement of active execution units (100) so that the active execution units
(100) testpieces for being driven moves back and forth in default displacement range, and displacement range can be adjusted；
Spacing control unit (300), is connected respectively, for activity with active execution units (100), position-limiting unit (200)
Performance element (100) sends startup control instruction so that active execution units (100) start to drive testpieces in vertical direction
Motion, and position-limiting unit described in real-time judge (200) detects whether the displacement of the testpieces for obtaining reaches default maximum limit
Position position or minimum restraining position, if reached, to the active execution units (100) default control instruction are sent,
Control the active execution units (100) and perform default moving operation, drive so as to control the active execution units (100)
The testpieces is moved together repeatedly；
The default displacement range is the displacement range between default maximum restraining position and default minimum restraining position.
2. fatigue experimental device as claimed in claim 1, it is characterised in that the active execution units (100) are including start
Cylinder (10) and pressurized strut commutation adjustment module (20)；
The bottom of the pressurized strut (10) is connected with a head rod (121)；
The top of the pressurized strut (10) has the first mounting base (141), and first mounting base (141) is installed in one
On external stability framework；
The outer wall upper and lower ends of the pressurized strut (10) have a upper port (111) and a lower port
(112), the upper port (111) and lower port (112) pass through respectively hollow a pipeline (113) and the work
Dynamic cylinder commutation adjustment module (20) is connected；
The pressurized strut commutates adjustment module (20) for the upper port (111) and lower port (112), replacing
Ground applies pressure and release pressure, drives the pressurized strut (10) to realize moving back and forth.
3. fatigue experimental device as claimed in claim 2, it is characterised in that pressurized strut commutation adjustment module (20), uses
In by upper port (111) air inlet of pressurized strut (10), to lower port (112) aerofluxuss, so that pressurized strut
(10) piston rod in is moved down, and by lower port (112) air inlet of pressurized strut (10), to upper port
(111) aerofluxuss, so that the piston rod in pressurized strut (10) is moved up.
4. fatigue experimental device as claimed in claim 2, it is characterised in that the position-limiting unit (200) is including spacing crossbeam
(1), the spacing crossbeam (1) including in vertical direction interval and horizontal positioned upper substrate (101) and lower shoe (102),
The left and right two ends of the upper substrate (101) and lower shoe (102) are mutually fixedly connected respectively with an installation side plate (16)；
Position limiting slide block (2) with horizontal positioned between the middle part of upper substrate (101) and the middle part of the lower shoe (102)
With mobile slide block (3), the position limiting slide block (2) is positioned at the top of mobile slide block (3)；
Upper substrate (101) middle part, the center of position limiting slide block (2) are provided through a connecting pole (6), the connection
The top of post (6) is connected with the bottom of the head rod (121)；
The bottom of the connecting pole (6) is connected with mobile slide block (3) top, the bottom centre of the mobile slide block (3)
Position connects with second connecting rod (122), bottom and the examination for needing to carry out fatigue test of second connecting rod (122)
Test part to be connected.
5. fatigue experimental device as claimed in claim 4, it is characterised in that the top of the connecting pole (6) connects with first
Extension bar embedded groove (60), is embedded in the bottom of the head rod (121) in the connecting rod embedded groove (60)；
The top center of the mobile slide block (3) has connecting pole embedded groove (30), in the connecting pole embedded groove (30)
It is embedded in the bottom of the connecting pole (6)；
The bottom centre position of the mobile slide block (3) has the second connecting rod embedded groove (31), the connecting pole embedded groove
(30) top of second connecting rod (122) is embedded in.
6. fatigue experimental device as claimed in claim 4, it is characterised in that middle part, the position limiting slide block of the upper substrate (101)
(2), the circumferentially-spaced of mobile slide block (3) and lower shoe (102) is provided through four guide posts (4), each described guide post
(4) upper and lower ends are connected respectively by a guide post fixing nut (8), the guide post (4) and the position limiting slide block
(2) it is gap cooperation and mobile slide block (3) between.
7. fatigue experimental device as claimed in claim 4, it is characterised in that the middle part of the upper substrate (101) and spacing cunning
Interval is provided through caging bolt (5) on block (2), and the caging bolt (5) protrudes from the part spiral shell of upper substrate (101) top surface
Stricture of vagina is connected with a upper limit nut (7), and the caging bolt (5) protrudes from the partial threads connection of upper substrate (101) bottom surface
There is a lower position nut (9).
8. fatigue experimental device as claimed in claim 4, it is characterised in that the spacing control unit (300) is including
Upper proximity switch (181), a lower proximity switch (182) and signal processing module (301), upper proximity switch (181) peace
It is mounted on the position limiting slide block (2), lower shoe (102) of the lower proximity switch (182) installed in the spacing crossbeam (1)
On；
The upper proximity switch (181), for judging whether the upper surface for moving slide block (3) reaches default maximum spacing position
Put, if reached, send first voltage pulse signal and give signal processing module (301)；
The lower proximity switch (182), for judging whether the lower surface for moving slide block (3) reaches default minimum spacing position
Put, if reached, send second voltage pulse signal and give signal processing module (301)；
Signal processing module (301), is connected respectively with the upper proximity switch (181), lower proximity switch (182) the phase signal of telecommunication,
For when the voltage pulse signal that the upper proximity switch (181) is sent is received, to pressurized strut commutation adjustment module (20)
Send and move downward regulating command, control pressurized strut commutation adjustment module (20) drives the pressurized strut (10) to be transported downwards
It is dynamic；When the voltage pulse signal that the lower proximity switch (182) is sent is received, send out to pressurized strut commutation adjustment module (20)
Go out motor adjustment order upwards, control pressurized strut commutation adjustment module (20) drives the pressurized strut (10) to be moved upwards.
9. fatigue experimental device as claimed in claim 8, it is characterised in that the default maximum restraining position is spacing cunning
The lower surface of block (2), the default minimum restraining position is lower shoe (102) upper surface.
10. the fatigue experimental device as any one of claim 4 to 9, it is characterised in that on the position limiting slide block (2)
A counting proximity switch (183) is also equipped with, the counting proximity switch (183) is connected with an enumerator, institute
Counting proximity switch (183) is stated for judging to move whether slide block (3) reaches default maximum restraining position, whenever mobile cunning
When the position of block (3) reaches default maximum restraining position, the counting proximity switch (183) just sends to the enumerator
Voltage pulse signal so that the rolling counters forward is once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044348.1U CN206177731U (en) | 2016-09-08 | 2016-09-08 | Displacement constraint's fatigue test device is carried out with stop gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044348.1U CN206177731U (en) | 2016-09-08 | 2016-09-08 | Displacement constraint's fatigue test device is carried out with stop gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206177731U true CN206177731U (en) | 2017-05-17 |
Family
ID=58675365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621044348.1U Active CN206177731U (en) | 2016-09-08 | 2016-09-08 | Displacement constraint's fatigue test device is carried out with stop gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206177731U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323775A (en) * | 2016-09-08 | 2017-01-11 | 天津航天瑞莱科技有限公司 | Fatigue test apparatus for performing displacement constraint with spacing mechanism |
| CN113092290A (en) * | 2021-03-26 | 2021-07-09 | 太原理工大学 | External prestress reinforced concrete beam fatigue test device and method |
-
2016
- 2016-09-08 CN CN201621044348.1U patent/CN206177731U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323775A (en) * | 2016-09-08 | 2017-01-11 | 天津航天瑞莱科技有限公司 | Fatigue test apparatus for performing displacement constraint with spacing mechanism |
| CN106323775B (en) * | 2016-09-08 | 2023-05-26 | 天津航天瑞莱科技有限公司 | Fatigue test device for carrying out displacement constraint by limiting mechanism |
| CN113092290A (en) * | 2021-03-26 | 2021-07-09 | 太原理工大学 | External prestress reinforced concrete beam fatigue test device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016107592A1 (en) | Intelligent oil pumping control method and intelligent oil pumping unit | |
| CN105424516B (en) | A kind of furniture static pressure fatigue tester | |
| CN201650901U (en) | Multi-cylinder synchronous hydraulic control device | |
| CN206177731U (en) | Displacement constraint's fatigue test device is carried out with stop gear | |
| CN102094803B (en) | Multifunctional sucker-rod pump hoisting simulation test system | |
| CN203769736U (en) | Double-well mutual balance hydraulic pumping unit hydraulic system | |
| CN206924812U (en) | The discharge gate adjusting means of jaw crusher | |
| CN207687109U (en) | A kind of frequency conversion high-precision super high pressure hydraulic control loading system | |
| CN111594139B (en) | Oil well test and equal pump filling press stroke frequency synchronous digital control oil pumping method | |
| CN101539585B (en) | Device for measuring flowability of explosive modeling powder | |
| CN206311200U (en) | A kind of electronic balance calibrating installation | |
| CN202646244U (en) | Hydraulic system for oil pumping unit | |
| CN209207113U (en) | Grinding device is used in a kind of processing of hydraulic cylinder | |
| CN110895396B (en) | Iterative approach follow-up leveling control method and device for beam-pumping unit | |
| CN106252102B (en) | A kind of electric power dynamic passive compensation electricity container refueling device | |
| CN201991538U (en) | Mining hydraulic liftable worktable | |
| CN106323775A (en) | Fatigue test apparatus for performing displacement constraint with spacing mechanism | |
| CN206824431U (en) | A kind of aerospace partses Special reforming equipment | |
| CN203046305U (en) | Balance cylinder structure for hydraulic machine | |
| CN106768203B (en) | Combined active piston liquid flow standard device | |
| CN105672952A (en) | Intelligent non-beam hydraulic oil pumping technology and hydraulic oil pumping machine | |
| CN211116877U (en) | Integrated bidirectional pump-controlled high-speed double-cylinder synchronous hydraulic control system | |
| CN206839675U (en) | A kind of fixture for being used to process decelerator mould assembling face | |
| CN209399054U (en) | Ultrasonic flaw detecting device is used in a kind of production of valve | |
| CN209681742U (en) | Hydraulic counterweight device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |