CN106769422A - Circle distribution formula high flux long-time creep test machine - Google Patents
Circle distribution formula high flux long-time creep test machine Download PDFInfo
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- CN106769422A CN106769422A CN201710152445.5A CN201710152445A CN106769422A CN 106769422 A CN106769422 A CN 106769422A CN 201710152445 A CN201710152445 A CN 201710152445A CN 106769422 A CN106769422 A CN 106769422A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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Abstract
The present invention provides a kind of circle distribution formula high flux long-time creep test machine, including frame, is arranged at the respective independent loading system of N sets and shared a set of heater in frame；Frame includes base and the upper cross plate by base support；Loading system includes lever loading mechanism, pull-up linkage, lower drag link mechanism, lifting levelling gear.N covers lever loading mechanism and is covered the second lever loading mechanism and constituted by L the first lever loading mechanisms of set for being supported on upper cross plate upper surface and the M for being suspended in upper cross plate lower surface；The stress point of N set lever loading mechanisms is circumferentially uniform, and it is circumferentially uniform that corresponding N puts drag link mechanism, lower drag link mechanism and N number of sample；N number of sample circumference is distributed in the cylindrical high temperature furnace of heater；N, L and M are integer, N >=2, L >=1, M >=1.The present invention ensure that accurate, the uniformity of multiple specimen test data, while testing machine floor space is few, experimentation cost is low.
Description
Technical field
It is on a kind of circle distribution formula high flux durable creeping specifically the invention belongs to Material Testing Machine field
Testing machine.
Background technology
Mechanical high-temerature creep permanent strength testing machine, by frame, loading system, temp measuring system, deformation measuring system, plus
Thermal, measurement and control system and software systems etc. are constituted.Frame generally includes base, by the fixed supported upper horizontal stroke of base
Plate, loading system generally includes the lever loading mechanism being arranged on upper cross plate, install lifting levelling gear in the base and
Counterweight loading and unloading body, the pull-up linkage coupled with lever loading mechanism and the lower draw-bar machine coupled with lifting levelling gear
Structure, pull-up linkage and lower drag link mechanism are coaxial, and sample is installed therebetween.Under constant load and temperature conditionss, creep
The data that test measurement record sample deformation amount is changed over time, it is therefore desirable to enable deformation measuring system, duration running is determined
Sample reaches the duration of fracture, therefore does not enable deformation measuring system.
There is following drawback in the mechanical high-temerature creep permanent strength testing machine of many samples of the prior art：
(1), upper surface centering of the existing loading system generally along upper cross plate is uniform, and multiple samples share a high temperature
Stove.High temperature furnace is usually cuboid-type, and sample is distributed in the high temperature furnace of cuboid-type.For in the high temperature furnace for ensureing cuboid-type
The temperature deviation requirement of portion soaking zone, increased the technical difficulty of electrical control, accordingly improve equipment production cost.To solve this
One problem, is also had separated to form independent heating space by dividing plate by the high temperature furnace of cuboid-type in the prior art, each
Heating space is respectively provided with the technical scheme of independent heating module and temperature monitoring module, but the technical scheme, increased electrically
The complexity of control structure, and multiple independent heating module and temperature monitoring module cause the experimentation cost to increase.
(2), multiple samples are installed in same frame, multiple samples are tested simultaneously when, if one of those or it is several
Individual sample is broken, then the vibration for producing can be directly passed to whole frame, so as to pass to other samples, influences other to try
The test of sample, reduces the accuracy of test data.
Therefore, it is necessary to a kind of mechanical high-temerature creep testing machine of new many samples is researched and developed, in guarantee test data
On the premise of accuracy, make testing machine structure compact, floor space is few, and experimentation cost is low.
The content of the invention
It is an object of the invention to provide a kind of circle distribution formula high flux long-time creep test machine, to overcome prior art
In above mentioned problem, on the premise of the accuracy of guarantee test data, make testing machine structure compact, floor space is few, experiment
Low cost；The shape of testing machine high temperature furnace is conducive to controlling the uniformity of hearth soaking zone temperature simultaneously.
To achieve the above object, the present invention uses following technical scheme：
Circle distribution formula high flux long-time creep test machine, including frame, the N being arranged in frame cover respective independent adding
Loading system and shared a set of heater, the frame include base and the upper cross plate by base support, the loading system
Including lever loading mechanism, pull-up linkage, lower drag link mechanism and lifting levelling gear, the pull-up linkage and lower draw-bar machine
Structure is coaxial, and sample is installed therebetween, wherein：
N covers the lever loading mechanism and is covered the first lever loading mechanism by the L for being supported on upper cross plate upper surface and be suspended in
The M of upper cross plate lower surface covers the second lever loading mechanism composition；
The stress point that N covers the lever loading mechanism is circumferentially uniform, and corresponding N puts drag link mechanism, lower drag link mechanism
It is circumferentially uniform with N number of sample；
The heater includes the high temperature furnace of cylinder, and N number of sample circumference is distributed in the high temperature furnace；
The N, L and M are integer, wherein N >=2, L >=1, M >=1.
According to the present invention, N >=3, L >=2, M >=1 or N >=3, L >=1, M >=2.
According to the present invention, the base includes base plate and the panel being supported on the base plate；The lifting levelling gear
Including the first elevating screw mechanism and aseismatic mechanism, wherein：
The first elevating screw mechanism includes being upward through the first screw mandrel of panel, the first screw mandrel of the panel bottom
Upper setting connecting plate；
The aseismatic mechanism includes being fixedly mounted on two lead columns of panel bottom, and the lead column is passed down through connection
The through hole at plate two ends is simultaneously sequentially connected in series linear bearing and the first buffer, and the linear bearing is embedded in through hole and and connecting plate
Bottom fix, locating part is installed in the lead column below first buffer, the linear bearing and connecting plate are along leading
Moved up and down to post.
According to the present invention, the lower end of the lead column extends downward base plate.
According to the present invention, the lower end of the lead column is passed down through base plate and extends to ground.
According to the present invention, the lever loading mechanism includes lever and is installed on the counterweight supporting device of lever end, its
In：
The front end inside of the lever has lever supporting part, and the lever supporting part is by being fixed on upper cross plate upper surface
Or the lever supporting block supporting of lower surface, equipped with balance screw mandrel on the front end face of the lever, equipped with flat on the balance screw mandrel
Weighing apparatus stone roller；
The counterweight supporting device includes link supporting seat, is installed on the connecting rod of the link supporting seat lower end, is installed on
The scale pan of the connecting rod bottom, is equipped with counterweight on the scale pan.
According to the present invention, the heater includes high temperature furnace, high temperature furnace elevating mechanism and positioning guide mechanism, wherein：
The high temperature furnace elevating mechanism includes a pair of steel wire ropes being fixedly connected with high temperature furnace, before being fixed on upper cross plate top
The Liang Ge steel wire ropes steering mechanism at end and the Liang Ge wirerope-windings mechanism of rear end；
The positioning guide mechanism includes the fixed seat being fixed in frame, the guide post that upper and lower ends are fixed by fixed seat
With the guide holder being fixed on high temperature furnace two side, the guide holder is by guide post guiding.
Compared with prior art, the present invention has following Advantageous Effects：
1) circle distribution formula high flux long-time creep test machine of the invention, the first lever loading mechanism is supported on upper cross plate
On, the second lever loading mechanism is suspended under upper cross plate, and the stress point of lever loading mechanism is circumferentially uniform, lever loading mechanism
Front end can partly overlap, greatly reduce the space of lever loading mechanism occupancy, and then reduce what testing machine integrally took
Test space.
2) using the high temperature furnace of cylinder, be conducive to controlling the uniformity of hearth soaking zone temperature；Pull-up linkage, drop-down
Linkage and sample are also circumferentially uniform, and sample circumference is distributed in the high temperature furnace of cylinder so that the heating of multiple samples
Condition more reaches unanimity, so as to ensure the accuracy of the test data of sample, uniformity.
3) radius of a circle of stress point is also reduced, and significantly reduces the radius of high temperature furnace, so as to reduce equipment and add
Hot cost, meanwhile, the Temperature Distribution of less inside heating furnace is more uniform, further increases the test data of multiple samples
Accuracy.
Brief description of the drawings
Fig. 1 is the structural representation of the testing machine of (N=6) of the invention.
Fig. 2 is the structural representation of frame of the invention.
Fig. 3 is the overlook direction structural representation of the testing machine of (N=6) of the invention.
Fig. 4 is the main view direction structure schematic diagram of loading system of the invention, and wherein double dot dash line represents frame.
Fig. 5 be Fig. 4 loading system A-A to distribution schematic diagram.
Fig. 6 is the distribution schematic diagram of the lifting levelling gear B-B direction of Fig. 4.
Fig. 7 is the main view direction structure schematic diagram of lever loading mechanism of the invention, and wherein double dot dash line represents upper cross plate.
Fig. 8 is the structural representation of pull-up linkage of the invention.
Fig. 9 is the structural representation of lower drag link mechanism of the invention.
Figure 10 is the structural representation of the testing machine with buffer gear.
Figure 11 is the main view direction structure schematic diagram of lifting levelling gear in Figure 10, and wherein double dot dash line represents panel.
Figure 12 is the enlarged drawing of C portion in Figure 11.
Figure 13 be lift levelling gear in Figure 10 look up direction structure schematic diagram.
Figure 14 is the overlook direction structural representation of lifting levelling gear in Figure 10.
Figure 15 is the main view direction structure schematic diagram of heater of the invention, and wherein double dot dash line represents frame.
Figure 16 is the overlook direction structural representation of heater of the invention, and wherein double dot dash line represents frame.
Figure 17 is the partial enlarged drawing of the V parts of Fig. 1 of the present invention；
Overlook direction structural representation when Figure 18 is N=2, L=1, M=1 of the invention.
Overlook direction structural representation when Figure 19 is N=3, L=2, M=1 of the invention.
Overlook direction structural representation when Figure 20 is N=4, L=2, M=2 of the invention.
Overlook direction structural representation when Figure 21 is N=5, L=3, M=2 of the invention.
Figure 22 is the structural representation of the high flux long-time creep test machine with counterweight loading and unloading body.
In figure：1- frames, 2- loading systems, 3- heaters, 4- temp measuring systems, 5- measurements and control system, 6- deformations
Measuring system, 7- samples, the fixtures of 8- first, the fixtures of 9- second, the fixtures of 10- the 3rd, the fixtures of 101- the 4th, 11- bottoms
Seat, 12- upper cross plates, 13- columns, the horizontal inductive switches of 14-, 21- load maintainers, 22- liftings levelling gear, 23- upper connecting rod machines
Drag link mechanism under structure, 24-, 25- counterweights loading and unloading body, the lever loading mechanisms of 21a- first, the lever loading mechanisms of 21b- second,
211- levers, 212- counterweights supporting device, 213- lever supportings part, 214- balances screw mandrel, 215- balanced weights, 216- link supportings
Seat, 217- connecting rods, 218- counterweights, 219- scale pans, 121- lever supportings block, 111- base plates, 112- connecting columns, 113- panels,
114- it is shockproof regulation pin, 115- shroudings, 122- switch brackets, 231- upper connecting rods supporting device, the automatic aligning devices of 232- first,
Pull bar under 233- upper connecting rods, 241- force snesors, the automatic aligning devices of 242- second, 243-, the first elevating screws of 220- mechanism,
The screw mandrels of 221- first, 222- leveling motors reductor, 223- synchronous belt drive mechanisms, 224- aseismatic mechanisms, 225- connecting plates,
226 lead columns, 227- linear bearings, the buffers of 228- first, 229- pre-load nuts, 2210- backing plates, 31- high temperature furnaces, 32- are high
Warm stove elevating mechanism, 33- positioning guide mechanisms, 321- steel wire ropes, 322- steel wire ropes steering mechanism, 323- wire rope winding machines
Structure, 324- lifting motors reductor, 311- guide holders, 331- fixed seats, 332- guide posts, 41- thermocouples, 61- extensometers,
62- displacement transducers, the second elevating screws of 251- mechanism, the screw mandrels of 252- second, the buffers of 253- second.
Specific embodiment
Below in conjunction with the accompanying drawings, technical scheme is described in further detail with specific embodiment.It should be understood that
Following examples are merely to illustrate the present invention not for restriction the scope of the present invention.
As shown in Figure 1 to Figure 3, according to one embodiment of present invention, circle distribution formula high flux long-time creep test machine,
A set of add including frame 1, be installed in frame 1 six sets each independent loading systems 2 and for what six sets loading systems 2 were shared
Thermal 3, six sets of each independent measurements and control systems 5, sample 7 is arranged in loading system 2, temp measuring system 4 and deformation
Measuring system 6 is arranged on sample 7.
It is (such as bolt, anti-by the first fixture 8 on the base 11 as shown in Fig. 2 the frame 1 includes base 11
Loose nut combination) column 13 is fixed with, the upper surface of the column 13 passes through the second fixture 9 (such as bolt, stop nut group
Close) fixed installation upper cross plate 12.
As shown in Figure 1, Figure 3 and Figure 4 to shown in Fig. 6, the loading system 2 includes the lever loading mechanism supported by upper cross plate 12
21, the lifting levelling gear 22 in base 11, the pull-up linkage 23 coupled with lever loading mechanism 21 and with lifting
The lower drag link mechanism 24 of the connection of levelling gear 22, the pull-up linkage 23 and lower drag link mechanism 24 are coaxial, install therebetween
Sample 7.
Wherein：Described six sets each independent lever loading mechanisms 21 are by three set of first lever loading mechanism 21a and three sets
Second lever loading mechanism 21b is constituted, and the first lever loading mechanism 21a is supported on the upper surface of the one end of upper cross plate 12, institute
State the lower surface that the second lever loading mechanism 21b is suspended in the other end of upper cross plate 12, six sets of stress point A of lever loading mechanism 21
Circumferentially uniform, corresponding pull-up linkage 23, lower drag link mechanism 24 and sample 7 are also circumferentially uniform.
As shown in Figure 14 and Figure 15, the heater 3 includes the high temperature furnace 31 of cylinder, the circumference uniform distribution of the sample 7
In in the high temperature furnace 31.
Many sample high flux long-time creep test machines of the invention, the first lever loading mechanism 21a is supported on upper cross plate 12
On, the second lever loading mechanism 21b is suspended under upper cross plate 12, and the stress point A of lever loading mechanism 21 is circumferentially uniform, lever
The front end of load maintainer 21 can partly overlap, and greatly reduce the space of the occupancy of lever loading mechanism 21, and then reduce experiment
The test space that machine integrally takes.
Using the high temperature furnace of cylinder, compared to the high temperature furnace of cuboid-type, be conducive to controlling the equal of hearth soaking zone temperature
Even property, the internal temperature of the high temperature furnace of cylinder is more uniform, and sample circumference is distributed in the high temperature furnace of cylinder so that multiple
The heating condition of sample more reaches unanimity, so as to ensure the accuracy of the test data of sample.
Simultaneously because the radius of a circle of stress point A is reduced, so that the radius of high temperature furnace 31 is significantly reduced, so that
Reduction equipment and heating cost；In addition, the Temperature Distribution of less inside heating furnace is more uniform, multiple examinations are further increased
The accuracy of the test data of sample.
According to the present invention, number N >=2 of the loading system 2 (or lever loading mechanism 21), first lever-loading
Number L >=1 of mechanism 21a, number M >=1 of the second lever loading mechanism 21b.Thick stick can be designed according to actual tests situation
The quantity of the quantity of bar load maintainer 21 and the first lever loading mechanism 21a and the second lever loading mechanism 21b, for example：
As shown in figure 18, N=2, L=1, M=1；Now, two stress point A of lever loading mechanism 21 are pressed from both sides according to 180 degree
Angle circumference uniform distribution, a first lever loading mechanism 21a is arranged on the upper surface of upper cross plate, second lever loading mechanism
21b is suspended in the lower surface of upper cross plate.
As shown in figure 19, N=3, L=2, M=1；Now, three stress point A of lever loading mechanism 21 are according to 120 degree of folders
Angle circumference uniform distribution, two the first lever loading mechanism 21a are arranged on the upper surface of upper cross plate 12, second lever loading mechanism
21b is suspended in the lower surface of upper cross plate 12.
As shown in figure 20, N=4, L=2, M=2；Now, four stress point A of lever loading mechanism 21 are according to 90 degree of folders
Angle circumference uniform distribution, two the first lever loading mechanism 21a are arranged on the upper surface of upper cross plate 12, two the second lever loading mechanisms
21b is suspended in the lower surface of upper cross plate 12.
As shown in figure 21, N=5, L=3, M=2；Now, five stress point A of lever loading mechanism 21 are according to 72 degree of folders
Angle circumference uniform distribution, three the first lever loading mechanism 21a are arranged on the upper surface of upper cross plate 12, two the second lever loading mechanisms
21b is suspended in the lower surface of upper cross plate 12.
Preferably, N >=3, L >=2, M >=1.Now, at least three samples 7 are added in the heating furnace 31 of cylinder
Heat, heats more uniform during three 7 circumference uniform distributions of sample.
As shown in fig. 7, according to the present invention, the lever loading mechanism 21 includes lever 211 and is installed on the end of lever 211
Counterweight supporting device 212, the lever 211 front end inside have lever supporting part 213, the lever supporting part 213 lead to
Cross and be fixed on the lever supporting block 121 of the upper surface of upper cross plate 12 or lower surface and support, the front end of the lever 211 is equipped with balance silk
Bar 214, balanced weight 215 is equipped with the balance screw mandrel.
The counterweight supporting device 212 includes link supporting seat 216, is installed on the company of 216 lower ends of link supporting seat
Bar 217, is installed on the scale pan 219 of the bottom of the connecting rod 217, and counterweight 218 is housed on the scale pan 219.
Further, lever supporting part 213 is edge structure, and the lever supporting block 121 is and the edge structure phase
The blade knife bearing structure of matching.
As shown in Fig. 2 according to the present invention, the base 11 includes base plate 111, connecting column 112 and panel 113, described
Connect post 112 to be fixed on the base plate 111 by the 3rd fixture 10 (such as bolt, nut are combined), the panel 113 passes through
4th fixture 101 (such as bolt, nut combination) is fixed on the top of the connecting column 112；The surrounding peace of the base 11
Dress shrouding 115.
As depicted in figs. 1 and 2, according to the present invention, the lower surface of the base plate 111 installs shockproof regulation pin 114.It is described anti-
Shake regulation pin 114 can be encapsulated regulation pin, can reduce influence of the vibration of sample fracture generation to other samples.
As shown in figures 1 to 6, according to the present invention, the lifting levelling gear 22 includes being upward through the first of panel 113
Screw mandrel 221, first screw mandrel 221 passes through toothed belt transmission by the leveling motor reductor 222 being fixedly mounted under panel 113
Mechanism 223 drives and moves up and down.
As shown in Figure 3 and Figure 4, according to the present invention, 6 switch brackets 122 are fixedly mounted on the upper cross plate 12, it is described to open
Close corresponded to respectively on support 122 and lever 211 be mounted to horizontal inductive switch 14.
For the first lever loading mechanism 21a, as shown in Figure 3 and Figure 4, the switch bracket 122 is fixedly mounted on
One end of upper cross plate 12, the bearing-surface of switch bracket 122 is higher by the upper surface of upper cross plate 12, on its bearing-surface and on lever 211
Correspondence be mounted to horizontal inductive switch 14.The switch bracket 122 can also be arranged on the upper surface of upper cross plate 12, use
The switch bracket of gate, the rear end of lever 211 passes through the switch bracket of the gate, paired horizontal inductive switch 14 to be arranged on
The both sides of the switch bracket 122 of gate.
For the second lever loading mechanism 21b, the switch bracket 122 is fixedly mounted on the another of upper cross plate 12
End, the bearing-surface of switch bracket 122 less than upper cross plate 12 lower surface, on its bearing-surface and on lever correspondence be mounted to peace
Fill horizontal inductive switch 14.The switch bracket 122 can also be arranged on the lower surface of upper cross plate 12, using the switch branch of gate
Frame, the rear end of lever 211 passes through the switch bracket 122 of the gate, paired horizontal inductive switch 14 to be arranged on opening for gate
Close the both sides of support 122.
Loading force is applied to sample 7 by lever loading mechanism 21, larger experiment can be obtained with lighter counterweight and carried
Lotus.In experiment, feedback of the levelling gear 22 by horizontal inductive switch 14 is lifted, adjust the horizontality of simultaneously control lever 211
In the range of license, so as to ensure the stabilization of loading force.
As shown in Figure 4 and Figure 8, according to the present invention, the pull-up linkage 23 includes that top is arranged on the lever supporting
Upper connecting rod supporting device 231 on part 213, the lower end of the upper connecting rod supporting device 231 is equipped with the first automatic aligning device
232, the lower end of first automatic aligning device 232 is equipped with upper connecting rod 233.
The upper connecting rod supporting device 231 of the first lever loading mechanism 21a is than the second lever loading mechanism 21b's
Upper connecting rod supporting device 231 is grown, to ensure that the sample 7 is in identical highly in high temperature furnace 31.
As shown in Fig. 1, Fig. 4 and Fig. 9, the lower drag link mechanism 24 includes the power installed in the upper end of the first screw mandrel 221
Sensor 241, the upper end of the force snesor 241 is equipped with the second automatic aligning device 242, second automatic aligning device
242 upper end is equipped with lower pull bar 243, and sample 7 is installed between the lower pull bar 243 and upper connecting rod 233.
Because multiple samples are tested on same testing machine, the vibration meeting that some sample fracture therein is produced
Frame is directly passed to, so that the experiment accuracy of other samples is influenceed indirectly, to solve this problem, using further below
Improvement project.
According to another embodiment of the invention, as shown in Figure 11 to 14, the lifting levelling gear 22 includes first
Elevating screw mechanism 220 and aseismatic mechanism 224, wherein：The first elevating screw mechanism 220 includes being upward through panel 113
The first screw mandrel 221, connecting plate 225 is set on first screw mandrel 221 of the bottom of the panel 113, first screw mandrel 221 is by solid
Leveling motor reductor 222 of the Dingan County under panel 113 is driven by synchronous belt drive mechanism 223 and moved up and down.
The aseismatic mechanism 224 includes being fixedly mounted on two lead columns 226 of the bottom of panel 113, the lead column 226
It is passed down through the connecting plate 225 and is sequentially connected in series the buffer 228 of linear bearing 227 and first, the linear bearing 227 is embedded
It is fixedly connected in the through hole at the two ends of the connecting plate 225 and with the bottom of connecting plate 225, the lower section of first buffer 228
Lead column 226 on install pre-load nut 229, the linear bearing 227 and connecting plate 225 move up and down along lead column 226.
The upper and lower surface of first buffer 228 is equipped with backing plate 2210.
In the present embodiment, pre-load nut 229 can also be and be securable in the prior art lead column 226, and playing prevents
The locating part that one buffer 228 falls, first buffer 228 is polyurethane bumper absorber.
Multiple samples are tested simultaneously when, when one of sample fracture, other samples are also at i.e. under the same terms
The state that will be broken.If a sample fracture, frame is produced vibration, and other samples are given by frame transmission, then can
Accuracy to the test data of other samples produces significant impact.Using above-mentioned technical proposal, make one of sample
The vibration produced during fracture is passed down to the first elevating screw mechanism 220 by the first screw mandrel 221, drives the He of connecting plate 225
Linear bearing 227 is moved up and down, and vibration is passed into the first buffer 228, is absorbed by the first buffer 228, can reduce one
The influence that individual sample fracture is caused to other samples, improves the accuracy of real test data.
Further, according to the present invention, the lower end of the lead column 226 extends downward base plate 111.When the first buffer
229 be not enough to by sample fracture produce absorption of vibrations, it is when influenceing the experiment of other samples, the lower end of the lead column is downward
Base plate is extended to, makes that base plate can not be transferred to by the vibrational energy that the first buffer 228 absorbs, absorbed by frame, so that further
Reduce influence of the vibration to sample.
Further, according to the present invention, the lower end of the lead column 226 is passed down through base plate 111 and extends to ground.When
The lower end of lead column 226 will can not be transferred to base plate and can't fully absorb vibration by the vibrational energy that the first buffer 228 absorbs
Can, when can also influence the experiment of other samples, the lower end of the lead column 226 is passed down through base plate and ground is extended to, will
Vibration passes to ground, so as to further reduce influence of the vibration to sample.
As shown in Figure 15 and Figure 16, according to the present invention, the heater 3 also includes high temperature furnace elevating mechanism 32 and positioning
Guiding mechanism 33, wherein：
The high temperature furnace elevating mechanism 32 includes a pair of the steel wire ropes 321 being fixedly connected with the top of high temperature furnace 31, fixed
In the Liang Ge steel wire ropes steering mechanism 322 and the Liang Ge wirerope-windings mechanism 323 of rear end of the top nose of the upper cross plate 12, institute
State wirerope-winding mechanism 323 to be driven by the power transmission shaft on lifting motor reductor 324, the lifting motor reductor
324 are arranged on upper cross plate 12, and the steel wire rope 321 is realized moving up and down by the high temperature furnace elevating mechanism 32.
The positioning guide mechanism 33 includes the fixed seat 331 being fixed on column 13, and upper and lower ends are consolidated by fixed seat 331
Fixed guide post 332, is fixedly installed guide holder 311 on the side wall of the high temperature furnace 31, the high temperature furnace 31 passes through guide holder 311
And be oriented to by guide post 332.
The high temperature furnace of existing mechanical high-temerature creep permanent strength testing machine is typically secured in frame, in high temperature furnace 31
Front open up fire door, be required to open fire door during installation and removal test specimen, operated in less separate space, operate
It is very inconvenient, therefore the installation accuracy of test specimen can be influenceed, and then influence the accuracy of follow-up test.In addition, after off-test, examination
The cooling in high temperature furnace 31 of the upper connecting rod 233 and lower pull bar 243 of sample 7 and loading specimen, because high temperature furnace has heat insulation effect,
Cause temperature fall time long, reduce further test efficiency.
High temperature furnace of the invention is connected by steel wire rope with high temperature furnace elevating mechanism, is capable of achieving free raising and lowering, examination
The installation and removal space of sample is big, convenient operation, improves the installation accuracy of sample, and then ensure that the accurate of test data
Property, and high temperature furnace is by guide post guiding, the mounting stability of structure is good.Multiple samples are tested simultaneously, and more than one piece sample
Uniformly, a high temperature furnace is shared, operating efficiency and heat utilization efficiency are significantly improved, and energy consumption significantly reduces, and reduces accounting for for equipment
Ground area, improves economic benefit.
As shown in Fig. 1 and Figure 17, according to the present invention, the temp measuring system 4 includes being fixed on the thermocouple 41 of specimen surface,
Temperature transition is electric signal, input measurement and control system 5 by the thermocouple 41；The deformation measuring system 6 includes clamping
In the extensometer 61 of sample upper and lower ends, displacement transducer 62 is housed on the extensometer 61, institute's displacement sensors 62 will be believed
Number it is conveyed to measurement and control system 5.
Whole testing machine is controlled by the software systems being arranged in control room, and front and rear is staff's assembly and disassembly sample work
Area, left and right is staff's handling counterweight workspace.
As shown in figure 3, according to the present invention, during N=6, the upper cross plate 12 1.22m long, 0.8m wide, the stress point A's
Circle diameter is 0.41m.Panel 113 2.5m long, 0.8m wide.
The specific size of the upper cross plate 12 and base 11 can be changed according to the particular number of loading system N.
Further, as shown in figure 22, the loading system 2 also includes the counterweight loading and unloading body being arranged in base 11
25, the counterweight loading and unloading body 25 includes being installed on the second elevating screw mechanism 251 of the lower surface of panel 113, described second
Second screw mandrel 252 of elevating screw mechanism 251 is upward through panel 113, and the second buffer 253, described second are installed in its upper end
Elevating screw mechanism 251 is driven by motor.The counterweight loading and unloading body 25 is known technology of the prior art, unknown herein
Thin description.
In process of the test, when certain sample fracture, the rear end of lever 211 is in the rapid decrease of counterweight supporting device 212, counterweight
Disk is struck on the second buffer 253 with larger momentum, supporting and cushioning effect by the second buffer 253, is reduced
Impact and the vibration of frame.
According to the present invention, the upper cross plate 12 immediately below the rear end of lever 211 of the first lever loading mechanism 21a is provided with
3rd buffer (not shown).3rd buffer can be polyurethane bumper absorber.
When certain sample fracture, the end of lever 21 rapid decrease in the presence of Weight gravity (loading force), but can
To obtain supporting and the buffering of the 3rd buffer below, thus the shock and vibration to frame can be reduced.
When circle distribution formula high flux long-time creep test machine of the invention is used, carry out in accordance with the following steps：
Startup power supply, starts high temperature furnace elevating mechanism, rises high temperature to correct position, adjusts lower pull bar to appropriate height,
Multiple samples are installed according to order from left to right, then, high temperature furnace is fallen；Control furnace temperature reaches test temperature, and high temperature furnace leads to
Cross electric control system and ensure that in-furnace temperature is uniform and stable, it is ensured that the heating condition of multiple samples is identical.Then added by lever
Mounted mechanism applies a constant test load to each sample, within the time of regulation, observes deformation or the fracture feelings of sample
Condition.
Testing machine is monitored and adjusted by the temperature on thermocouple measurement sample, measurement and control system to temperature.
During creep test, the deformation of sample is measured by the extensometer of deformation measuring system, the displacement transducer on extensometer is by signal
It is conveyed to measurement and control system.
After the completion of experiment, the power supply of high temperature furnace is closed, lifting high temperature furnace treats upper and lower pull bar and sample drop to correct position
To after normal temperature, counterweight is removed, pull down sample.
Specific embodiment of the invention has been described in detail above, but it is only used as example, and the present invention is not intended to limit
In particular embodiments described above.To those skilled in the art, any equivalent modifications carried out to the practicality and replace
In generation, is also all among scope of the invention.Therefore, the equalization made without departing from the spirit and scope of the invention is converted and repaiied
Change, all should be contained within the scope of the invention.
Claims (7)
1. circle distribution formula high flux long-time creep test machine, including frame, is arranged at the respective independent loading of N sets in frame
System and shared a set of heater, the frame include base and the upper cross plate by base support, the loading system bag
Include lever loading mechanism, pull-up linkage, lower drag link mechanism and lifting levelling gear, the pull-up linkage and lower drag link mechanism
Coaxially, sample is installed therebetween, it is characterised in that wherein：
N covers the lever loading mechanism and covers the first lever loading mechanism by the L for being supported on upper cross plate upper surface and be suspended in upper horizontal stroke
The M of plate lower surface covers the second lever loading mechanism composition；
The stress point that N covers the lever loading mechanism is circumferentially uniform, and corresponding N puts drag link mechanism, lower drag link mechanism and N number of
Sample is circumferentially uniform；
The heater includes the high temperature furnace of cylinder, and N number of sample circumference is distributed in the high temperature furnace；
The N, L and M are integer, wherein N >=2, L >=1, M >=1.
2. testing machine according to claim 1, it is characterised in that N >=3, L >=2, M >=1 or N >=3, L >=1, M >=
2。
3. testing machine according to claim 1, it is characterised in that the base includes base plate and is supported on the base plate
Panel；The lifting levelling gear includes the first elevating screw mechanism and aseismatic mechanism, wherein：
The first elevating screw mechanism includes being upward through the first screw mandrel of panel, is set on the first screw mandrel of the panel bottom
Put connecting plate；
The aseismatic mechanism includes being fixedly mounted on two lead columns of panel bottom, and the lead column is passed down through connecting plate two
The through hole at end is simultaneously sequentially connected in series linear bearing and the first buffer, the linear bearing be embedded in through hole and with the bottom of connecting plate
Portion is fixed, and locating part is installed in the lead column below first buffer, and the linear bearing is with connecting plate along lead column
Move up and down.
4. testing machine according to claim 3, it is characterised in that the lower end of the lead column extends downward base plate.
5. testing machine according to claim 3, it is characterised in that the lower end of the lead column is passed down through base plate and extends
To ground.
6. the testing machine according to any one of claim 1-5, it is characterised in that the lever loading mechanism includes lever
And the counterweight supporting device of lever end is installed on, wherein：
The lever front end inside have lever supporting part, the lever supporting part by be fixed on upper cross plate upper surface or under
The lever supporting block supporting on surface, equipped with balance screw mandrel on the front end face of the lever, is equipped with balanced weight on the balance screw mandrel；
The counterweight supporting device includes link supporting seat, is installed on the connecting rod of the link supporting seat lower end, is installed on described
The scale pan of connecting rod bottom, is equipped with counterweight on the scale pan.
7. testing machine according to claim 1, it is characterised in that the heater includes that high temperature furnace, high temperature furnace are lifted
Mechanism and positioning guide mechanism, wherein：
The high temperature furnace elevating mechanism includes a pair of steel wire ropes being fixedly connected with high temperature furnace, is fixed on upper cross plate top nose
Liang Ge steel wire ropes steering mechanism and the Liang Ge wirerope-windings mechanism of rear end；
The positioning guide mechanism includes the fixed seat being fixed in frame, guide post and consolidate that upper and lower ends are fixed by fixed seat
The guide holder on high temperature furnace two side is scheduled on, the guide holder is oriented to by guide post.
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| CN201710152445.5A CN106769422B (en) | 2017-03-15 | 2017-03-15 | Circumferential distributed high-flux durable creep testing machine |
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| CN201710152445.5A CN106769422B (en) | 2017-03-15 | 2017-03-15 | Circumferential distributed high-flux durable creep testing machine |
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| CN109115615A (en) * | 2018-10-10 | 2019-01-01 | 中国矿业大学 | Mining annular wire rope load-carrying properties test device and method |
| CN109187223A (en) * | 2018-11-21 | 2019-01-11 | 石家庄铁道大学 | Test the testing equipment and test method of Creep of Geosynthetics performance |
| CN111272572A (en) * | 2019-11-04 | 2020-06-12 | 于重久 | Multi-head tensile testing machine |
| CN111272573A (en) * | 2019-11-04 | 2020-06-12 | 于重久 | Multi-head creep endurance testing machine |
| CN112284920A (en) * | 2020-10-21 | 2021-01-29 | 中国矿业大学(北京) | Rock high-temperature compression test device and test method |
| CN113155868A (en) * | 2021-03-30 | 2021-07-23 | 中国科学院近代物理研究所 | Online irradiation creep sample stage based on wafer sample ejection technology |
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| CN108489824A (en) * | 2018-04-04 | 2018-09-04 | 上海凯尔孚应力腐蚀试验设备有限公司 | Multi-axial Loading stress corrosion (cracking) test equipment |
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| CN109187223A (en) * | 2018-11-21 | 2019-01-11 | 石家庄铁道大学 | Test the testing equipment and test method of Creep of Geosynthetics performance |
| CN111272572A (en) * | 2019-11-04 | 2020-06-12 | 于重久 | Multi-head tensile testing machine |
| CN111272573A (en) * | 2019-11-04 | 2020-06-12 | 于重久 | Multi-head creep endurance testing machine |
| CN112284920A (en) * | 2020-10-21 | 2021-01-29 | 中国矿业大学(北京) | Rock high-temperature compression test device and test method |
| CN113155868A (en) * | 2021-03-30 | 2021-07-23 | 中国科学院近代物理研究所 | Online irradiation creep sample stage based on wafer sample ejection technology |
| CN113155868B (en) * | 2021-03-30 | 2022-01-14 | 中国科学院近代物理研究所 | Online irradiation creep sample stage based on wafer sample ejection technology |
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