CN102706759A - Flexural fatigue testing machine - Google Patents
Flexural fatigue testing machine Download PDFInfo
- Publication number
- CN102706759A CN102706759A CN2012101927078A CN201210192707A CN102706759A CN 102706759 A CN102706759 A CN 102706759A CN 2012101927078 A CN2012101927078 A CN 2012101927078A CN 201210192707 A CN201210192707 A CN 201210192707A CN 102706759 A CN102706759 A CN 102706759A
- Authority
- CN
- China
- Prior art keywords
- sample
- main shaft
- specimen mounting
- specimen
- base
- 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.)
- Granted
Links
Images
Abstract
The invention provides a flexural fatigue testing machine, which comprises a hydraulic motor and a deceleration machine used as driving devices, a main shaft, a plurality of eccentric wheels, a main shaft supporting seat and a specimen holder, wherein the main shaft is arranged on the main shaft supporting seat in a rotatable mode, the eccentric wheels on the main shaft are driven to rotate by the hydraulic motor, a specimen is fixed on the specimen holder, the height of the specimen holder and the horizontal distance between the specimen holder and the main shaft are adjustable, and periodic load is applied to the specimen by the eccentric wheels so as to enable the specimen to be bended and deformed repeatedly until the specimen is fractured. According to the flexural fatigue testing machine disclosed by the invention, a flexural fatigue test can be carried out on a plurality of specimens simultaneously every time, fatigue performances of the specimens can be contrasted, the test period is short, and the work efficiency is high; and the flexural fatigue testing machine has a simple structure and is low in cost, the flexural fatigue test can be carried out on specimens with different specifications, different loading positions and loading working conditions can be selected, and the scope of application of the machine is wide.
Description
Technical field
The present invention relates to the testing equipment technical field, in particular to a kind of fatigue bending machine.
Background technology
Construction material generally can be tested its mechanical property in using.Except the mechanical property of routine, the fatigue behaviour of material also is its very important performance index, because the phenomenon of fatigure failure is very extensive, it all is to belong to fatigure failure that about according to statistics 50 ~ 90% physical construction is destroyed.
At present, mostly the fatigue test of materials machine is big load versatility experimental facilities, and device structure is complicated; Cost is expensive, can only carry out torture test to a sample at every turn, can't realize simultaneously a plurality of samples being carried out the bending fatigue equipment of tired contrast test; Test period is longer, and work efficiency is lower.
Summary of the invention
The invention provides a kind of fatigue bending machine, can carry out the bending fatigue contrast test to a plurality of samples simultaneously, the test period is short, high efficiency, and it is simple in structure, and cost is low.
In view of this, the invention provides a kind of fatigue bending machine, comprising: drive unit, main shaft, a plurality of eccentric wheel, main shaft support seat and specimen mounting; Said main shaft is installed in rotation on the said main shaft support seat; Said drive unit is connected with said main shaft, can drive said main shaft and rotate; Said specimen mounting is used for fixing sample, and the horizontal range between the height of said specimen mounting and said specimen mounting and said main shaft can be adjusted; Said eccentric wheel is installed on the said main shaft, can rotate with said main shaft, and said eccentric wheel can apply periodic load to the sample that is installed on the said specimen mounting.
When carrying out torture test; Sample one end is fixedly mounted on the said specimen mounting, and the other end of said sample cooperates with said eccentric wheel, rotates through the said main shaft of said drive device drives; The said eccentric wheel of installing on the said main shaft also rotates with said main shaft; Said eccentric wheel cooperates with said sample, makes sample alternating bending under the effect of alterante stress, and sample is carried out repeated bend test.In the present technique scheme, eccentric number can be confirmed according to the number and the testing requirements of sample, therefore can carry out repeated bend test to a plurality of samples simultaneously, and can the fatigue behaviour of a plurality of samples be compared, and the test period is shorter, and test efficiency is higher; Height through adjusting said specimen mounting and the horizontal range between said specimen mounting and said main shaft; Can satisfy the repeated bend test of the sample of different size; And can select different loading positions and loading condition to sample, this fatigue bending machine simple in structure, cost is lower.
In technique scheme, preferably, said drive unit comprises oil motor and reductor, and said reductor is installed between said oil motor and the said main shaft, can give said main shaft with the transmission of power of said propulsion system.Adopt oil motor as power source, can apply big load and be convenient to control; The output speed of general propulsion system is all higher; And the rotating speed that said main shaft needs has different requirement; Event needs said reductor to be connected with the output shaft of said propulsion system, and the rotating speed after said reductor will reduce passes to said main shaft, adapts to the needs of different rotating speeds.Certainly, power source can also be motor, servomotor, engine, air pressure motor or the like.
In above-mentioned arbitrary technical scheme, preferably, also comprise the roller that matches with said eccentric wheel, said roller is installed on the said sample, and said eccentric wheel applies periodic load through said roller to said sample.Adopt the roller that cooperates with eccentric wheel to reduce the friction between sample and eccentric wheel,, can improve the tired operating mode stability that loads, and improve eccentric serviceable life to reduce the heating phenomenon of workpiece to the sample imposed load.
In above-mentioned arbitrary technical scheme, preferably, also comprise counter, said counter is connected with said main shaft, writes down the rotation number of turns of said main shaft.Said main shaft rotates a week, and sample is accomplished the first order buckling distortion, and said counter is connected with said main shaft, and said counter can write down sample diastrophic altogether number of times when reaching fatigue limit, generation fatigue break, so that calculate the fatigue behaviour of sample.
In above-mentioned arbitrary technical scheme, preferably, said fatigue bending machine also comprises base, and said specimen mounting is installed on the said base, and said specimen mounting can move on said base, to adjust the horizontal range between said specimen mounting and said main shaft.In this programme, adopt base to support specimen mounting, specimen mounting can move horizontally on base, structures such as dovetail groove, guide rail for example are set on base realize moving of specimen mounting, and control accuracy is high.Certainly, also can adopt other structures to realize that the horizontal range between specimen mounting and rotating shaft is adjustable, for example specimen mounting is installed on the wheel undercarriage and waits other structures.
In above-mentioned arbitrary technical scheme, preferably, said specimen mounting comprises specimen holder and specimen mounting body; Said specimen holder is removably mounted on the said specimen mounting body, is used to clamp said sample; Said specimen mounting body is installed on the said base, and the height-adjustable of said specimen mounting body.Said specimen holder is removably mounted on the said specimen mounting body; And the height that can drive said specimen holder through the height of adjustment specimen mounting body changes; Like this; Can change specimen holder according to the different size of sample, and can select different loading conditions, satisfy the requirement of different size sample.
In above-mentioned arbitrary technical scheme, preferably, said specimen mounting body comprises anchor clamps mount pad, latch segment, leading screw, nut, at least two guide pillars and Connection Block; Said specimen holder is removably mounted on the said anchor clamps mount pad; The upper end of said guide pillar connects said anchor clamps mount pad slidably, and the lower end is fixed on the said Connection Block, and said Connection Block is installed on the said base; Said leading screw and said nut cooperate, and can drive said anchor clamps mount pad and move up and down along said guide pillar, to adjust the height of said specimen mounting; Said latch segment cooperates with said anchor clamps mount pad, can realize that the locking between said anchor clamps mount pad and said guide pillar perhaps gets loose.
In specific embodiment, adopt leading screw and nut to cooperate the height of adjusting said specimen holder, simple in structure, reliable; In process of the test; Sample receives external applied load; Stable external applied load just can accurately be measured the fatigue behaviour of sample; But so thereby lock said specimen holder at the locking fixture of latch segment described in process of the test mount pad, make that said specimen holder is fixed in working depth, thereby guaranteed that sample bears stable external applied load.
In above-mentioned arbitrary technical scheme; Preferably, said fatigue bending machine also comprises the sample support frame, and said sample support frame and said specimen mounting are arranged side by side on said base; One end of said sample is fixed on the said specimen mounting, and the other end is supported on the said sample support frame; The height of said sample support frame with and and said specimen mounting between horizontal range can adjust.
In practical application, when the long perhaps sample of sample is big, can adopt said sample support frame to support sample, and can adjust said sample support frame to the horizontal range between said specimen mounting according to specimen length; One end of sample is fixedly connected on the said specimen mounting; The other end of sample is supported on the said sample support frame; Make that an end of said sample can free movement on said sample support frame; Through eccentric wheel the middle part of said sample is applied cyclic load, can carry out torture test long, large-scale sample.
In above-mentioned arbitrary technical scheme, preferably, said sample support frame comprises bracing frame body and support roller; Said support roller is installed on the support frame as described above body, is used to support said sample; The support frame as described above body is installed on the said base, and the support frame as described above body can move on said base, to adjust the horizontal range between said sample support frame and said specimen mounting.Through adopting support roller to support sample in the upper end of sample support frame; Can reduce the friction between sample and sample support frame; To reduce the heating phenomenon of workpiece; Can improve the tired operating mode stability that loads, can guarantee that the free end of said sample can free movement, thereby guarantee that said sample can the free bend distortion.
In above-mentioned arbitrary technical scheme, preferably, the support frame as described above body comprises supporting member, supports latch segment, supports leading screw, holding nut, at least two supporting cell guides and base for supporting; Said support roller is installed in rotation on the said supporting member, and the upper end of said supporting cell guide connects said supporting member slidably, and the lower end is fixed on the said base for supporting, and said base for supporting is installed on the said base 7; Said support screw and said holding nut cooperate, and can drive said supporting member and move up and down along said supporting cell guide, to adjust the height of said sample support frame; Said support latch segment cooperates with said supporting member, can realize that the locking between said supporting member and said supporting cell guide perhaps gets loose.In this embodiment; Adopt support leading screw and holding nut to realize the adjustment of bracing frame body height; Adopt the cooperation of supporting latch segment and supporting member to realize the locking of supporting member, its principle of work is identical with locking with the height control of said sample frame with effect, repeats no more.
In sum, the fatigue bending machine that the present invention is above-mentioned can carry out torture test to a plurality of samples at every turn simultaneously, and the test period is short, high efficiency; This fatigue bending machine, the bending fatigue performance that satisfies material makes an experiment, and the sample that is suitable for different size makes an experiment, and it is simple in structure, and cost is lower.
Description of drawings
Fig. 1 is the structural representation of the embodiment of fatigue bending machine according to the present invention;
Fig. 2 is the end view of fatigue bending machine shown in Figure 1;
Fig. 3 is the end view of another embodiment of fatigue bending machine according to the present invention.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 3:
1 oil motor, 2 main shafts, 3 eccentric wheels, 4 main shaft support seats
5 specimen mountings, 50 specimen holders, 51 specimen mounting bodies
510 anchor clamps mount pads, 511 latch segments, 512 leading screws, 513 nuts
514 guide pillars, 515 Connection Blocks, 516 clamping screws, 517 pads
6 rollers, 7 bases, 8 reductors, 9 bearings
10 counters, 11 control device
14 sample support framves, 141 bracing frame bodies, 142 support rollers, 143 supporting members
144 support latch segment 145 supporting cell guides 146 base for supporting 147 supports clamping screw
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with accompanying drawing and embodiment.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
Fig. 1 and Fig. 2 show the structure of fatigue bending machine one embodiment of the present invention; Fig. 3 shows the structure of another embodiment of fatigue bending machine of the present invention.Wherein, Fig. 1 is the structural representation of this fatigue bending machine one embodiment; Fig. 2 is the end view of fatigue bending machine shown in Figure 1; Fig. 3 is the end view of another embodiment of this fatigue bending machine.What the arrow among the figure was represented specimen mounting and sample support frame moves horizontally direction and height control direction.
To shown in Figure 3, a kind of fatigue bending machine provided by the invention comprises: as oil motor 1 and reductor 8, main shaft 2, a plurality of eccentric wheel 3, supporting seat 4, specimen mounting 5, roller 6 and the base 7 of drive unit like Fig. 1; Reductor 8 is installed between oil motor 1 and the main shaft 2, can give main shaft 2 with the transmission of power of oil motor 1, rotates with driving main shaft 2; A plurality of eccentric wheels 3 are installed on the main shaft 2, can rotate with main shaft 2; Main shaft 2 is supported on the main shaft support seat 4 rotationally; Sample removably is fixed on the specimen mounting 5, and roller 6 is installed on the sample, and matches with eccentric wheel 3, and the load of eccentric wheel 3 is applied on the sample through roller 6; Specimen mounting 5 is installed on the base 7, and can move horizontally along base 7, with the horizontal range of 2 on adjustment specimen mounting 5 and main shaft, and after moving to the position of needs specimen mounting 5 can be fixed on the base 7.
When carrying out torture test; Sample one end is fixedly mounted on the said specimen mounting, and the other end of said sample cooperates with said eccentric wheel, rotates through the said main shaft of said drive device drives; The said eccentric wheel of installing on the said main shaft also rotates with said main shaft; Said eccentric wheel cooperates with said sample, makes sample alternating bending under the effect of alterante stress, and sample is carried out repeated bend test.In the present technique scheme, eccentric number can be confirmed according to the number and the testing requirements of sample, therefore can carry out repeated bend test to a plurality of samples simultaneously, and can the fatigue behaviour of a plurality of samples be compared, and the test period is shorter, and test efficiency is higher; Height through adjusting said specimen mounting and the horizontal range between said specimen mounting and said main shaft; Can satisfy the repeated bend test of the sample of different size; And can select different loading positions and loading condition to sample, this fatigue bending machine simple in structure, cost is lower.
In the present embodiment; Adopt oil motor 1 as power source; Can apply big load and be convenient to control load; But it will be appreciated by those skilled in the art that as power source of the present invention can also be motor, servomotor, engine, air pressure motor etc., as long as can driving main shaft rotate.The technical scheme of above-mentioned employing oil motor can also further accurately control the rotating speed of oil motor through electric proportional valve.For example, as shown in Figure 1, comprise control device 11, control device 11 is controlled the rotating speed of oil motor 1 through electric proportional valve, makes more accurate to the control of oil motor 1.
In embodiments of the present invention, sample can respond the exciting of eccentric wheel 3 through the elastic deformation of self, and its speed of replying distortion of different samples is all different, so the rotating speed that requires eccentric wheel 3 also otherwise same; Eccentric wheel 3 is driven by main shaft 2, and oil motor 1 drives main shaft 2 through reductor 8 and rotates, and general reductor 8 all is to slow down by fixing number percent, and then control device 11 is through the rotating speed of electric proportional valve control oil motor 1, the further rotating speed of control eccentric 3.
In the present embodiment, preferably, main shaft 2 is installed in rotation on the main shaft support seat 4 through bearing 9.Be connected through bearing 9 between main shaft 2 and the supporting seat 4, cost is low, be easy to realize.Further, bearing 9 can hold for rolling axle, and bearing 9 employings are rolled axle and held, and both can carry the load of main shaft 2, and its long service life.
In optimal technical scheme, this fatigue bending machine also comprises counter 10, and counter 10 is connected with main shaft 2, the rotation number of turns of record main shaft 2.Main shaft 2 rotates a week; Sample is accomplished the first order buckling distortion; Counter 10 is connected with main shaft 2, and counter 10 can write down sample diastrophic altogether number of times when reaching fatigue limit, generation fatigue break through the rotating cycle of record main shaft 2, so that calculate the fatigue behaviour of sample.
In the present embodiment, base 7 is horizontally disposed with, and specimen mounting 5 is vertically mounted on the base 7, and the adjustment of specimen mounting 5 horizontal ranges is moved on base 7 through it and realized, and specimen mounting 5 can be fixed on the base 7 after moving to the position that needs.In this programme, adopt base to support specimen mounting, specimen mounting can move horizontally on base, structures such as dovetail groove, guide rail for example are set on base realize moving of specimen mounting, and control accuracy is high.Certainly, also can adopt other structures to realize that the horizontal range between specimen mounting and rotating shaft is adjustable, for example specimen mounting is installed on the wheel undercarriage and waits other structures.
In the technique scheme, adjust the horizontal range between specimen mounting 5 and the main shaft 2 moving horizontally on the base 7 through specimen mounting 5, concrete, 7 be provided with guide rail on can base, specimen mounting 5 can move horizontally on base 7 along guide rail.The mode of guide rail is set on base 7, and it moves steadily, and implementation procedure is simple.
In the present embodiment, preferably as depicted in figs. 1 and 2, specimen mounting 5 comprises specimen holder 50 and specimen mounting body 51; Specimen holder 50 is removably mounted on the specimen mounting body 51, is used to clamp sample, and specimen mounting body 51 is installed on the base 7, and the height-adjustable of specimen mounting body 51, and specimen mounting body 51 can move horizontally on base 7.Specimen holder 5 is removably mounted on the specimen mounting body 51; And the height that can drive said specimen holder through the height of adjustment specimen mounting body changes; Like this; Can change specimen holder 50 according to the different size of sample, satisfy the requirement of different size sample, enlarge the scope of application of sample.
Further, specimen mounting body 51 bag institute anchor clamps mount pad 510, latch segment 511, leading screw 512, nut 513, two guide pillars 514 and Connection Blocks 515; Said specimen holder 50 is removably mounted on the said anchor clamps mount pad 510; The upper end of said guide pillar 514 connects said anchor clamps mount pad 510 slidably, and the lower end is fixed on the said Connection Block 515, and said Connection Block 515 is installed on the said base 7; Said leading screw 512 matches with said nut 513, can drive said anchor clamps mount pad 510 and move up and down along said guide pillar 514, to adjust the height of said specimen mounting 5; Said latch segment 511 cooperates with said anchor clamps mount pad 510, can realize that the locking of 514 of said anchor clamps mount pad 510 and said guide pillars perhaps gets loose, thereby realizes the fixing and height control of anchor clamps mount pad 510.
In the present embodiment, adopt leading screw 512 and nut 513 to cooperate the height of adjusting specimen holder 50, simple and reliable for structure; Thereby latch segment 511 locking fixture mount pads 510 locking specimen holders 50 make that specimen holder 50 is fixed in working depth, thereby have guaranteed that sample bears stable external applied load in process of the test.
In the present embodiment, the height of specimen holder 50 is regulated in the cooperation of employing leading screw 512 and nut 513, adopts latch segment 511 and anchor clamps mount pad 510 to cooperate and realizes fixing of test fixture 50.But, it will be understood by those of skill in the art that and also can adopt other structures to realize this two kinds of functions, for example adopt hydraulic cylinder and lock valve, also can realize the adjustment of specimen holder 50 height and fixing.
In the above-described embodiments, as shown in figures 1 and 3, this repeated bend test utmost point also comprises sample support frame 14; Sample support frame 14 is arranged side by side on base 7 with specimen mounting 5, and an end of sample is fixed on the specimen mounting 5, and the other end is supported on the sample support frame 14; The bearing height of sample support frame 14 with and and the distance of 5 of specimen mountings can adjust.
In the repeated bend test process of sample, longer when sample, when perhaps sample is big, can adopt sample support frame 14 to support sample, and can adjust the distance of sample support frame 14 according to specimen length to specimen mounting 5.Sample one end is fixedly connected on the specimen mounting 5; The other end of sample freely is supported on the sample support frame 14; Make that an end of sample can free movement on sample support frame 14; Roller 6 is fixed on the sample and with eccentric wheel 3 and cooperates, thereby can apply cyclic load through 3 pairs of said samples of eccentric wheel.The sample support frame 14 that present embodiment further provides freely supports an end of sample, can carry out fatigue testing specimen to long, large-scale sample.
Preferably, sample support frame 14 comprises bracing frame body 141 and support roller 142; The upper end of bracing frame body 141 is equipped with support roller 142, and the lower end is installed on the base 7; Support roller 142 supports samples, and bracing frame body 141 is installed on the guide rail of base 7, so that bracing frame body 141 can move at base 7 upper edge guide rails, and bracing frame body 141 can be fixed on the base 7 after moving to the position that needs.The upper end of sample support frame 14 adopts support roller 142 to support sample; Can reduce the friction of 14 of sample and bracing frames; And the heating phenomenon of avoiding rubbing and being caused, to reduce the heating phenomenon of workpiece, can improve the tired operating mode stability that loads; The free end that can guarantee sample can free movement, thereby guarantees that sample can flexural deformation.
Further, preferably, bracing frame body 141 comprises supporting member 143, supports latch segment 144, supports leading screw, holding nut, at least two supporting cell guides 145 and base for supporting 146; Said support roller 142 is installed in rotation on the said supporting member 143, and the upper end of said supporting cell guide 145 connects said supporting member 143 slidably, and the lower end is fixed on the said base for supporting 146, and said base for supporting 146 is installed on the said base 7; Said support screw and said holding nut cooperate, and can drive said supporting member 143 and move up and down along said supporting cell guide 145, to adjust the height of said sample support frame 14; Said support latch segment 144 cooperates with said supporting member 143, can realize that the locking of 145 of said supporting member 143 and said supporting cell guides perhaps gets loose, thereby realizes the fixing and height control of supporting member 143.
Adopt the cooperation of supporting leading screw and holding nut to adjust the height of supporting member 143, adopt the cooperation of supporting latch segment 144 and supporting member 142 to realize the locking of supporting member 143; The height control of its principle of work and effect and said sample frame 5 is with fixing; Structure is identical with principle, repeats no more.
To sum up, the above-mentioned fatigue bending machine of the present invention can carry out torture test to a plurality of samples simultaneously, and the test period is short, high efficiency; The bending fatigue performance that can be directed against material specially makes an experiment, and simple in structure, cost is lower, and can the sample of different size be made an experiment.
The above-mentioned disclosed fatigue bending machine of the present invention can pass through following specific embodiment, is described further:
Embodiment 1:
A kind of fatigue bending machine as depicted in figs. 1 and 2, that one embodiment of the invention provides comprises: oil motor 1 links to each other with reductor 8; Oil motor 1 is connected with control device 11, and reductor 8 is connected with an end of main shaft 2, and the other end of main shaft 2 is connected with counter 10; Main shaft 2 is connected through bearing 9 with main shaft support seat 4 rotationally, and specimen mounting 5 is installed on the base 7 that is provided with guide rail, and specimen mounting 5 comprises specimen holder 50 and sample support frame body 51; Sample support frame body 51 comprises anchor clamps mount pad 510, latch segment 511, leading screw 512, nut 513, symmetrically arranged two guide pillars 514 and Connection Block 515; Specimen holder 50 removably is fixedly mounted on the anchor clamps mount pad 510, and the upper end of symmetrically arranged guide pillar 514 is connecting anchor clamps mount pad 510 slidably, the lower end is fixed on the Connection Block 515, and Connection Block 515 is installed on the base 7; The lower end of leading screw 512 is connected with base Connection Block 515; The upper end be installed in nut 513 bolts on the anchor clamps mount pad 510, latch segment 511 is connected with the bottom of anchor clamps mount pad 510 through clamping screw 516, and the bottom of latch segment 511 and anchor clamps mount pad 510 is fastened on the guide pillar 514; Sample is installed on the specimen holder 50 through pad 517; Roller 6 is installed on the sample, and eccentric wheel 3 is installed on the main shaft 2, and eccentric wheel 3 matches with roller 6.
The Connection Block 515 of specimen mounting 5 can be along the guide rail move left and right on the base 7, and moves to behind the position that needs through being bolted on the base 7; Unscrew clamping screw 516, then latch segment 511 and anchor clamps mount pad 510 unclamp the fastening of symmetrically arranged guide pillar 514, at this moment; Rotary screw rod 512 drives nut 513 and rotates, because of nut 513 is installed on the anchor clamps mount pad 510; And anchor clamps mount pad 510 is supported by symmetrically arranged guide pillar 514; Thereby limited the rotation of anchor clamps mount pad 510, thereby made anchor clamps mount pad 510 do rectilinear motion along guide pillar 514 in the lump, realized the height control of anchor clamps mount pad 510 together with nut 513.In process of the test, sample receives external applied load, and stable external applied load just can accurately be measured the fatigue behaviour of sample; So in process of the test, need regulation anchor clamps mount pad 510 and anchor clamps 50, tighten clamping screw 516 this moment; Then can make latch segment 511 and anchor clamps mount pad 510 be held on the guide pillar 514, realize that anchor clamps mount pad 510 is fixed, move with anchor clamps mount pad 510 the same are limited because of nut 513 this moment; Thereby leading screw 512 also can't rotate, and realizes the locking of anchor clamps mount pad 510, thereby makes specimen holder 50 keep working depth fixed; Guarantee that sample bears stable external applied load, carries out normal repeated bend test.
The rotating speed of oil motor 1 can be controlled through control device 11 control electric proportional valves, and oil motor 1 is passed to reductor 8 with rotating speed, through reductor 8 reductions of speed; Reductor 8 is passed to main shaft 2 with the slow-speed of revolution, and main shaft 2 drives eccentric wheel 3 and rotates, and eccentric wheel 3 matches with roller 6; Through exerting pressure, can produce alternate load to sample, compressing also drives the sample up-down vibration; Because sample has elastic performance, accomplish up-down vibration through the elastic deformation of sample self, main shaft 2 is accomplished a circumference and is rotated; Sample is accomplished an elastic deformation, through the number of turns that counter 10 record main shafts 2 turn over, the number of times of the elastic deformation in the time of can obtaining sample arrival fatigue limit.
Because of sample is to respond eccentric exciting through self elastic deformation; Its speed of replying distortion of then different samples is different, so require the rotating speed of eccentric wheel 3 different, eccentric wheel 3 is driven by main shaft 2; Oil motor 1 drives main shaft through reductor 8; Reductor 8 slows down by fixed percentage, and control device 11 can further be realized the purpose of control eccentric 3 rotating speeds through the rotating speed of electricity than valve operation valve control oil motor 1.Simultaneously, the stress amplitude required to various sample is different, should select the eccentric wheel 3 of corresponding eccentric throw for use.
Embodiment 2:
As shown in figs. 1 and 3; Show another embodiment of fatigue bending machine of the present invention, this fatigue testing specimen machine is compared with last the foregoing description 1 said fatigue tester, also comprises sample support frame 14; Sample support frame 14 comprises bracing frame body 141 and support roller 142; Support roller 142 is installed in the upper end of bracing frame body 141, and support roller 142 supports sample, and bracing frame body 141 comprises supporting member 143, supports latch segment 144, supports leading screw, holding nut, symmetrically arranged supporting cell guide 145 and base for supporting 146; Sample support frame 14 is installed on the base 7 that is provided with guide rail through base for supporting 146; Base for supporting 146 can move along guide rail, and after bracing frame 14 moved to the position that needs, base for supporting 146 can be through being bolted on the base 7; The upper end of symmetrically arranged supporting cell guide 145 is connecting supporting member 143 slidably, the lower end is fixed on the base for supporting 146; Base for supporting 146 is installed on the base 7; The lower end of supporting leading screw is connected with base for supporting 146; The upper end be installed in the holding nut bolt on the supporting member 143, supports latch segment 144 and is connected with the bottom of supporting member 143, and the bottom of support latch segment 144 and supporting member 143 is fastened on the supporting cell guide 145 through supporting clamping screw 147.Other structures of this bracing frame 14 and the height control of supporting member 143 and fixing; Identical with the height control of the anchor clamps mount pad 510 of said sample bracing frame 5 with fixing structure and principle; And the fatigue bending machine of present embodiment is also identical with other structures of the fatigue bending machine of the foregoing description, repeats no more.
In the repeated bend test process of sample, longer when sample, when perhaps sample is big, can adopt sample support frame 14 to support the other end of sample, and according to the horizontal range of specimen length adjustment sample support frame 14 to 5 of specimen mountings.Then an end of sample is fixedly connected on the anchor clamps 50 of specimen mounting 5, and the other end of sample freely is supported on the support roller 142 of sample support frame 14, makes that sample can free movement on sample support frame 14; Roller 6 is fixed on the sample and with eccentric wheel 3 and matches, and sample is applied alterante stress, realizes the torture test to sample.
To sum up, fatigue bending machine provided by the invention can carry out torture test to a plurality of samples at every turn simultaneously, and the test period is short, high efficiency; Special bending fatigue performance to material makes an experiment, and it is simple in structure, and cost is lower, and can the sample of different size be made an experiment.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a fatigue bending machine is characterized in that, comprising: drive unit, main shaft (2), a plurality of eccentric wheel (3), main shaft support seat (4) and specimen mounting (5);
Said main shaft (2) is installed in rotation on the said supporting seat (4); Said drive unit is connected with said main shaft (2), can drive said main shaft (2) and rotate;
Said specimen mounting (5) is used for fixing sample, and the horizontal range between the height of said specimen mounting (5) and said specimen mounting (5) and said main shaft (2) can be adjusted;
Said eccentric wheel (3) is installed on the said main shaft (2), can rotate with said main shaft (2), and said eccentric wheel (3) can apply periodic load to the sample that is installed on the said specimen mounting (5).
2. fatigue bending machine according to claim 1; It is characterized in that; Said drive unit comprises oil motor (1) and reductor (8); Said reductor (8) is installed between said oil motor (1) and the said main shaft (2), can give said main shaft (2) with the transmission of power of said oil motor (1).
3. fatigue bending machine according to claim 1; It is characterized in that; Also comprise the roller (6) that matches with said eccentric wheel (3), said roller (6) is installed on the said sample, and said eccentric wheel (3) applies periodic load through said roller (6) to said sample.
4. fatigue bending machine according to claim 1 is characterized in that, also comprises counter (10), and said counter (10) is connected with said main shaft (2), writes down the rotation number of turns of said main shaft (2).
5. according to each described fatigue bending machine among the claim 1-4; It is characterized in that; Said fatigue bending machine also comprises base (7); Said specimen mounting (5) is installed on the said base (7), and said specimen mounting (5) can be gone up at said base (7) and move, to adjust the horizontal range between said specimen mounting (5) and said main shaft (2).
6. fatigue bending machine according to claim 5 is characterized in that, said specimen mounting (5) comprises specimen holder (50) and specimen mounting body (51);
Said specimen holder (50) is removably mounted on the said specimen mounting body (51), is used to clamp said sample; Said specimen mounting body (51) is installed on the said base (7), and the height-adjustable of said specimen mounting body (51).
7. fatigue bending machine according to claim 6; It is characterized in that said specimen mounting body (51) comprises anchor clamps mount pad (510), latch segment (511), leading screw (512), nut (513), at least two guide pillars (514) and Connection Block (515);
Said specimen holder (50) is removably mounted on the said anchor clamps mount pad (510); The upper end of said guide pillar (514) connects said anchor clamps mount pad (510) slidably, and the lower end is fixed on the said Connection Block (515), and said Connection Block (515) is installed on the said base (7);
Said leading screw (512) and said nut (513) cooperate, and can drive said anchor clamps mount pad (510) and move up and down along said guide pillar (514), to adjust the height of said specimen mounting (5);
Said latch segment (511) cooperates with said anchor clamps mount pad (510), can realize that the locking between said anchor clamps mount pad (510) and said guide pillar (514) perhaps gets loose.
8. fatigue bending machine according to claim 5; It is characterized in that; Said fatigue bending machine also comprises sample support frame (14); Said sample support frame (14) is arranged side by side on said base (7) with said specimen mounting (5), and an end of said sample is fixed on the said specimen mounting (5), and the other end is supported on the said sample support frame (14); The height of said sample support frame (14) with and and said specimen mounting (5) between horizontal range can adjust.
9. fatigue bending machine according to claim 8 is characterized in that, said sample support frame (14) comprises bracing frame body (141) and support roller (142); Said support roller (142) is installed on the support frame as described above body (141), is used to support said sample; Support frame as described above body (141) is installed on the said base (7), and support frame as described above body (141) can be gone up at said base (7) and move, to adjust the horizontal range between said sample support frame (14) and said specimen mounting (5).
10. fatigue bending machine according to claim 9; It is characterized in that support frame as described above body (141) comprises supporting member (143), supports latch segment (144), supports leading screw, holding nut, at least two supporting cell guides (145) and base for supporting (146);
Said support roller (142) is installed in rotation on the said supporting member (143); The upper end of said supporting cell guide (145) connects said supporting member (143) slidably; The lower end is fixed on the said base for supporting (146), and said base for supporting (146) is installed on the said base (7);
Said support screw and said holding nut cooperate, and can drive said supporting member (143) and move up and down along said supporting cell guide (145), to adjust the height of said sample support frame (14);
Said support latch segment (144) cooperates with said supporting member (143), can realize that the locking between said supporting member (143) and said supporting cell guide (145) perhaps gets loose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192707.8A CN102706759B (en) | 2012-06-12 | 2012-06-12 | Flexural fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192707.8A CN102706759B (en) | 2012-06-12 | 2012-06-12 | Flexural fatigue testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102706759A true CN102706759A (en) | 2012-10-03 |
| CN102706759B CN102706759B (en) | 2015-01-07 |
Family
ID=46899701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210192707.8A Active CN102706759B (en) | 2012-06-12 | 2012-06-12 | Flexural fatigue testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102706759B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928305A (en) * | 2012-11-14 | 2013-02-13 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN102980822A (en) * | 2012-12-06 | 2013-03-20 | 南京航空航天大学 | Mechanical type pushing fatigue tester and corrosion fatigue testing method |
| CN104297080A (en) * | 2014-10-23 | 2015-01-21 | 北京金风科创风电设备有限公司 | Bending fatigue testing device for rotor magnetic pole of direct-drive permanent magnet wind driven generator |
| CN106525591A (en) * | 2016-11-30 | 2017-03-22 | 西南交通大学 | Material damage tolerance detection device based on rotating bending fatigue as well as detection method |
| CN106908331A (en) * | 2017-03-20 | 2017-06-30 | 苏州拓博机械设备有限公司 | A kind of wire bend testing machine |
| CN107607372A (en) * | 2017-08-22 | 2018-01-19 | 哈尔滨工程大学 | A kind of fragile material fatigue crack prefabrication testing machine |
| CN108051318A (en) * | 2018-02-06 | 2018-05-18 | 沈阳航空航天大学 | A kind of detection method and device of the bending failure temperature of material |
| CN108670440A (en) * | 2018-05-31 | 2018-10-19 | 郑州大学第附属医院 | A kind of plastic and aesthetic surgery utensil washer |
| CN109900562A (en) * | 2019-03-13 | 2019-06-18 | 成都飞机工业（集团）有限责任公司 | A kind of method of multiple pressure head detection polymer matrix composites bending property |
| CN110631934A (en) * | 2019-09-27 | 2019-12-31 | 郑州新泰精密量仪有限公司 | Waveform gasket fatigue testing machine and testing method thereof |
| CN111175159A (en) * | 2019-12-30 | 2020-05-19 | 中钢集团邢台机械轧辊有限公司 | Horizontal bat type contact fatigue testing machine |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113552013A (en) * | 2021-07-08 | 2021-10-26 | 中国科学院力学研究所 | Fatigue experiment device for metal additive manufacturing parts |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236132Y (en) * | 1995-03-10 | 1996-09-25 | 黄宗玉 | Metal bending test machine |
| JPH10332563A (en) * | 1997-06-04 | 1998-12-18 | Shimadzu Corp | Two-axis load testing apparatus |
| WO2001063243A2 (en) * | 2000-02-23 | 2001-08-30 | Saturn Fasteners, Inc. | Fastener tensile test assembly |
| CN101271052A (en) * | 2008-04-08 | 2008-09-24 | 广西工学院 | Flat plate fatigue bending machine |
| WO2010063243A1 (en) * | 2008-12-02 | 2010-06-10 | Bahal Cr A.S. | Peripheral load-bearing wall for low-energy buildings |
| CN102156077A (en) * | 2011-05-06 | 2011-08-17 | 中国石油大学(华东) | Reciprocating bending corrosion fatigue testing machine |
| CN202710426U (en) * | 2012-06-12 | 2013-01-30 | 三一重工股份有限公司 | Flexural fatigue testing machine |
-
2012
- 2012-06-12 CN CN201210192707.8A patent/CN102706759B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236132Y (en) * | 1995-03-10 | 1996-09-25 | 黄宗玉 | Metal bending test machine |
| JPH10332563A (en) * | 1997-06-04 | 1998-12-18 | Shimadzu Corp | Two-axis load testing apparatus |
| WO2001063243A2 (en) * | 2000-02-23 | 2001-08-30 | Saturn Fasteners, Inc. | Fastener tensile test assembly |
| CN101271052A (en) * | 2008-04-08 | 2008-09-24 | 广西工学院 | Flat plate fatigue bending machine |
| WO2010063243A1 (en) * | 2008-12-02 | 2010-06-10 | Bahal Cr A.S. | Peripheral load-bearing wall for low-energy buildings |
| CN102156077A (en) * | 2011-05-06 | 2011-08-17 | 中国石油大学(华东) | Reciprocating bending corrosion fatigue testing machine |
| CN202710426U (en) * | 2012-06-12 | 2013-01-30 | 三一重工股份有限公司 | Flexural fatigue testing machine |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928305A (en) * | 2012-11-14 | 2013-02-13 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN102928305B (en) * | 2012-11-14 | 2015-04-15 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN102980822A (en) * | 2012-12-06 | 2013-03-20 | 南京航空航天大学 | Mechanical type pushing fatigue tester and corrosion fatigue testing method |
| CN104297080A (en) * | 2014-10-23 | 2015-01-21 | 北京金风科创风电设备有限公司 | Bending fatigue testing device for rotor magnetic pole of direct-drive permanent magnet wind driven generator |
| CN106525591A (en) * | 2016-11-30 | 2017-03-22 | 西南交通大学 | Material damage tolerance detection device based on rotating bending fatigue as well as detection method |
| CN106525591B (en) * | 2016-11-30 | 2023-09-12 | 西南交通大学 | Material damage tolerance detection device and method based on rotational bending fatigue |
| CN106908331A (en) * | 2017-03-20 | 2017-06-30 | 苏州拓博机械设备有限公司 | A kind of wire bend testing machine |
| CN107607372B (en) * | 2017-08-22 | 2020-12-25 | 哈尔滨工程大学 | Brittle material fatigue crack prefabrication testing machine |
| CN107607372A (en) * | 2017-08-22 | 2018-01-19 | 哈尔滨工程大学 | A kind of fragile material fatigue crack prefabrication testing machine |
| CN108051318A (en) * | 2018-02-06 | 2018-05-18 | 沈阳航空航天大学 | A kind of detection method and device of the bending failure temperature of material |
| CN108670440A (en) * | 2018-05-31 | 2018-10-19 | 郑州大学第附属医院 | A kind of plastic and aesthetic surgery utensil washer |
| CN109900562A (en) * | 2019-03-13 | 2019-06-18 | 成都飞机工业（集团）有限责任公司 | A kind of method of multiple pressure head detection polymer matrix composites bending property |
| CN110631934A (en) * | 2019-09-27 | 2019-12-31 | 郑州新泰精密量仪有限公司 | Waveform gasket fatigue testing machine and testing method thereof |
| CN110631934B (en) * | 2019-09-27 | 2022-07-12 | 郑州新泰精密量仪有限公司 | Waveform gasket fatigue testing machine and testing method thereof |
| CN111175159A (en) * | 2019-12-30 | 2020-05-19 | 中钢集团邢台机械轧辊有限公司 | Horizontal bat type contact fatigue testing machine |
| CN111175159B (en) * | 2019-12-30 | 2023-08-25 | 中钢集团邢台机械轧辊有限公司 | Horizontal bat type contact fatigue testing machine |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113552013A (en) * | 2021-07-08 | 2021-10-26 | 中国科学院力学研究所 | Fatigue experiment device for metal additive manufacturing parts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102706759B (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102706759A (en) | Flexural fatigue testing machine | |
| CN201532297U (en) | Air spring test device | |
| CN101126677B (en) | Air spring torsion fatigue test method and device for track traffic | |
| CN103017992B (en) | Device and method for measuring static rigidity of rolling linear guide rail pair | |
| CN102879269A (en) | Multifunctional stretcher capable of being loaded in multiple axial directions | |
| CN101793613B (en) | Vehicle shock absorber test-bed by adopting sine transmission device | |
| CN105891036A (en) | Impacting-sliding composite frictional wear testing device and method thereof | |
| CN201083593Y (en) | Air spring torsional pendulum fatigue-testing machine for rail traffic | |
| CN202710426U (en) | Flexural fatigue testing machine | |
| CN103267599A (en) | Fixing device with strong universality for testing of spring torque | |
| CN204963846U (en) | Tire and experimental deflection measuring device of soil contact deformation | |
| CN201047820Y (en) | Train air spring torsional pendulum fatigue testing machine | |
| CN204142591U (en) | A kind of end tooth structure jogging fatigue experimental device | |
| CN108444816A (en) | A kind of rock mass discontinuity circulation shear tester and test method | |
| CN109752202B (en) | Train disc type caliper brake test bed with rigidity adjustable structure | |
| CN202974605U (en) | Rolling linear guide rail pair static stiffness measuring device | |
| CN201653708U (en) | Damper test bench adopting double-guide-rail sine transmission device | |
| CN204924606U (en) | Device is applyed to direction in space exciting force | |
| CN103776711A (en) | Guide rail abrasion precision test bed | |
| CN200979502Y (en) | An automobile suspension property test-bed with modulated frequency and adjustable amplitude | |
| CN108398223B (en) | Heavy-load vertical impact test equipment | |
| CN104568416B (en) | The mechanical clamping device of bellows expansion joint | |
| CN107576567B (en) | Experimental platform and testing method for composite testing of mechanical properties of dot matrix sandwich composite sheet | |
| CN201971435U (en) | Capacitor loading and turnover mechanism | |
| CN206311328U (en) | A kind of bearing accelerated life test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |