CN2632662Y - Elastic component creep tester - Google Patents
Elastic component creep tester Download PDFInfo
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- CN2632662Y CN2632662Y CN 03248571 CN03248571U CN2632662Y CN 2632662 Y CN2632662 Y CN 2632662Y CN 03248571 CN03248571 CN 03248571 CN 03248571 U CN03248571 U CN 03248571U CN 2632662 Y CN2632662 Y CN 2632662Y
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Abstract
The utility model relates to an elastic unit creep testing machine, which is based on the working principle of a strength saving lever and the principle of a weight suspension automatic loading operation, and which adopts the elastic unit creep testing machine of a machinery type loading operation. Through adopting the machinery structure that is suspended onto the strength saving lever as a testing loading device, the creep testing machine can be carried on the tested article that is positioned inside a testing box under a high and low temperature. In order to reduce the loaded burden of the weight, the acting strength of the weight can be increased through a sliding wheel. A machine frame is provided with a pin joint of the lever. The one end of the beam for the lever is connected with the pin joint of the machine frame. The loading beam of the lever can shake up and down around the upper hinge on the machine frame. The other end of the lever is hanged with a loading weight, which is hanged onto the beam of the lever through a movable pulley group and a steel wire rope. The movable pulley group can be arranged as two groups. The beam of the lever has another loading force applying point, which is positioned between the pin joint and the suspension point of the weight. The loading force applying point of the lever beam is connected with an adjustable guiding bar. The loading operation is carried out through the loading force of the adjustable guiding bar to the loading weight.
Description
Affiliated field
The utility model is a kind of slow test device, belongs to a kind of by means of the chemistry of measuring material or physical property is tested or the test unit of analysis of material characteristic, is meant the test unit that the creep resistant fatigue behaviour of flexible member is tested especially.Be mainly used in compression or the shear creep test of doing flexible member.
Background technology
The creep test that flexible member is done by domestic present many producers is that the servo apply hydraulic pressure pilot system is carried out, singularity because of creep test, the Hydraulic Servo Control ratio of precision be cannot say for sure to demonstrate,prove, load has fluctuation sometimes, test findings is not very satisfactory, and the test run cost is very high, deficiency in economic performance.Also have producer to adopt electronic universal tester to carry out creep test, but electronic universal tester is subject to the influence of extraneous factors such as having a power failure, equipment manufacturing cost and operating cost be all than higher, and be not suitable for the needs of long period of experiments.Adopt the two-stage lever to load the creep testing machine of form in addition in addition, the power transmission is bigger, but the experiment work stroke ratio is less, is not suitable for the needs of elastomer element large deformation.By searching the patent situation and the relevant article thereof of " creep test ", " lever test ", " counterweight test " keyword aspect, find no the patented claim record and relevant paper of flexible member creep testing machine.It is ZL89107018.4 that patent is only found the patent No., name is called " refractory ceramics creep testing machine " and the patent No. and is 93208364.1 and is called " plastic pipe internal pressure creep test unit " two, tests but these two kinds of creep testing machines can not be used to do the compression or the shear creep of flexible member at all.
Yet,,, in bullet train and urban track traffic, all use flexible member in large quantities for bullet train and urban track traffic are carried out vibration and noise reducing, improve the comfort level of driving a vehicle because of developing rapidly of present bullet train and urban track traffic.Creep compliance in use such as some product such as journal box spring, herringbone rubber spring is a very important index in the flexible member, and the size of creep compliance tends to directly have influence on the serviceable life and the security of operation of vehicle, equipment.Because the flexible member initial deformation is bigger, its creep compliance is very obvious in actual use, and therefore controlling its creep compliance seems particularly important in the actual use of engineering.And our Chinese north and south latitude differs greatly, and the temperature difference is also very big, and especially in the winter time, the north and south temperature difference even reach more than 60 degrees centigrade, north of china in winter minimum temperature are sometimes subzero below 30 ℃.The performance of flexible member is relatively more responsive again to variation of temperature, therefore must carry out creep test high low temperature under to flexible member again, uses under varying environment and can both meet design requirement with the assurance flexible member.Companies such as external MTS and Instron also have and are specifically designed to the creep testing machine of doing flexible member, they mainly are the forms that adopts Electronic Control, the accurate screw mandrel of driven by power to load, test effect is also fine, but the procurement price of these testing machines is very expensive, the input that needs is very big, and owing to all be to adopt electronic control loaded, if so also exist outage in the test, the possibility of whole test failure will be caused, and under the present electric power supply situation of China, power failure often is contingent.In view of the present this situation of China, need really on the market a kind of not only loaded reliable, precision is high but also operating cost is cheap, is suitable for the long period of experiments needs, can carry out the creep testing machine of creep test under the high low temperature to flexible member.
Summary of the invention
The purpose of this utility model is to provide a kind of loading reliable and stable, and loading accuracy height, and test run is with low cost is good in economic efficiency, simple to operate, easy to maintenance, can carry out the creep testing machine of creep test under the high and low temperature environment.
Creep (creep) is meant the process that under permanent load and temperature action deformation prolongs in time and increase gradually.Creep testing machine (creeping testing machine) is meant under given load and temperature, carries out the static load Material Testing Machine of creep test.In the creep test process, key to guarantee add load and can keep very high loading accuracy, and take all factors into consideration the influence of environment temperature to creep test.Simultaneously creep test often requires test period long, and is short then 72 hours, long then reach half a year even more than 1 year, thus in process of the test, reduce the test run cost as far as possible, warranty test loads reliable and stable extremely important.Creep is represented with the percent of initial deformation usually, initial deformation x
0Must be at defined initial time t
0Measure, this time is about about 10 times than applying the used time of deformation.
According to the purpose of this utility model, characteristics in conjunction with the flexible member creep test, the applying working condition of considering flexible member overwhelming majority products simultaneously is to work under compressive state or shearing condition, therefore creep testing machine of the present utility model mainly be meant compress or shearing condition under creep test.The technology implementation scheme that the utility model is taked is: principle of work and counterweight according to laborsaving lever hang the principle that can load automatically, the physical construction that adopts laborsaving lever and counterweight to hang on creep testing machine to combine is as experiment loading unit, and increases the acting force of counterweight by running block.Set up the hinge of a lever on frame, crossbeam one end of lever is connected on the hinge of frame, and the loading crossbeam of lever can swing up and down around the frame upper hinge.The other end of lever is hung with the loading counterweight, and counterweight hangs on the lever crossbeam by a running block and wire rope, and running block can be two groups.On lever crossbeam, have one to load the point of application in addition, load the point of application between the hinge and counterweight hitch point of lever, on lever crossbeam loads the point of application, be connected with adjustable guide pole, and will load the loading force that counterweight applies by adjustable guide pole sample is loaded.
According to the elastic body creep testing machine that the utility model is developed, main body is a not too complex mechanical construction of structure, makes feasible fully.The data acquisition software that part of data acquisition adopts is relatively simple, and in software industry relatively advanced today, this software is easy to realize.Its performance not only loads reliable and stable, the loading accuracy height, and also the test run cost is very low, good in economic efficiency, simple to operate, easy to maintenance, can carry out the creep test under the high and low temperature environment, the testing equipment of high-performance low operating cost can be provided for the needs of elastomer product creep test.
Accompanying drawing and explanation
Fig. 1 is a structural representation front view of the present utility model;
Fig. 2 is a structural representation vertical view of the present utility model;
Fig. 3 is a structural representation left view of the present utility model.
Among the figure 1, hinge; 2, load lever; 3, travelling block mechanism; 4, adjustable guide pole; 5, load the lever elevating mechanism; 6, frame; 7, wire rope adjusting mechanism; 8, high-low-temperature environmental testing case; 9, guard rail; 10, weights; 11, load transducer; 12, creep test load maintainer; 13, load(ing) point; 14, gantry base; 15, the column of frame; 16, wire rope; 17, chute.
Embodiment
Accompanying drawing has provided a specific embodiment of the present utility model, and the present invention is described in further detail below in conjunction with accompanying drawing.As can be seen, this elastic body creep testing machine comprises frame 6, chamber 8, creep test load maintainer more than 12 parts, is characterized in from accompanying drawing: creep test is to load by a mechanical hook-up that lever and counterweight made up to carry out creep test.Its load maintainer 12 is a kind of by loading the composite machine formula loading structure that lever 2 combines with counterweight 10, the loading of its creep test is to be loaded into by counterweight 10 to load lever 2, by loading lever 2 loading force is passed to adjustable guide pole 4 by load(ing) point 13 again, and load to creep sample by adjustable guide pole 4.Concrete structure is: lay high low temperature experimental box 8 on the base 14 of frame, be placed with test specimen in the high low temperature experimental box 8, on frame left column 15, be provided with simultaneously the hinge pin 1 that loads lever 2 is installed, hinge pin 1 links to each other with loading lever 2 kinks, loading lever 2 can be that hinge swings up and down with hinge pin 1, and is hung with the counterweight 10 that can load arbitrarily by wire rope 16 at the other end that loads lever 2.In order to reduce the heavy load that adds of counterweight 10, the wire rope 16 that hangs counterweight 10 can also be linked to each other with loading lever 2 through a travelling block mechanism 3 again.End at wire rope 16 also is provided with wire rope adjusting mechanism 7, is used for regulating as required the length of wire rope.The guard rail 9 that wire rope and counterweight are partly protected also is installed on the base 14 of frame simultaneously.Have the chute 17 that allows loading lever 2 swing up and down in the upper end of frame right column 15, the bottom of chute 17 is equipped with and is adjusted the loading lever elevating mechanism 5 that loads lever reference position about in the of 2.In addition, between adjustable guide pole 4 and high low temperature experimental box 8 load transducer 11 is installed also, load transducer 11 is directly installed on the pressure head, and displacement transducer and temperature sensor are according to the concrete Dingan County of sample holding position.The data of being gathered can be carried out data acquisition automatically with sensor-computer and preserve, utilize a sets of data acquisition software again, three test parameters that collect are illustrated on the ordinate, with the time representation horizontal ordinate.Can conveniently analyze and analyze of the influence of each factor like this to creep test to test figure.
The principle of work of apparatus of the present invention is: with a counterweight that can load arbitrarily 10 and loading lever 2, couple together by travelling block 3, form the compound loading structure, and power passed to by counterweight 10 load lever 2, again by load lever 2 through with load adjustable guide pole 4 that lever 2 links to each other the creep test loading force passed to the interior test specimen of high-low-temperature environmental testing case 8.The frame of this testing machine is the self-equilibrating frame, can reduce the requirement to mounting platform; Pulley-steel cord structure has adopted sister block, has reduced the weight of counterweight at double; The counterweight quality is divided gradient design from 1kg～500kg, can select the counterweight number as required for use; Counterweight must not change the counterweight quality after in a single day hanging and deciding in process of the test.Load the crossbeam span and design greatlyyer, when the less angle of pitch, can make pressure head produce bigger displacement like this.Guarantee the loading accuracy of system in process of the test simultaneously.The high-low-temperature environmental testing case can be used for doing the creep test under the high and low temperature state, and temperature control precision is ± 1 ℃.Displacement transducer and temperature sensor are according to the concrete Dingan County of sample holding position, and load transducer is directly installed on the pressure head.Utilize a sets of data acquisition software again, carry out data acquisition automatically with sensor-computer and preserve, three test parameters that collect are illustrated on the ordinate, with the time representation horizontal ordinate.Can conveniently analyze and analyze of the influence of each factor like this to creep test to test figure.
Major technique characteristics of the present invention are:
(1) loading accuracy: consider that the creep testing machine working time is long, institute adds load and requires to keep reliable and stable, will consider the influence of environment temperature to creep simultaneously.The testing machine structure that I have adopted lever-pulley-counterweight formula to load, this structure can guarantee the variation of load on the load energy real-time follow-up product, guarantee that loading is reliable and stable, the loading accuracy height.Adopt rolling bearing can reduce friction factor as much as possible, the resistance of reducing friction in addition; Select self-aligning roller bearing for use, be that radially load-bearing capacity is big because of it, and can bear an amount of axial load, it is practical reliable to guarantee to work long hours, and makes structure more compact simultaneously.In the design, the design loading scope of testing machine is 20kN～150kN, the test scale load loading accuracy can reach test reality and add in 0.1% scope of load in the testing machine full scale, the linearly dependent coefficient of system's dynamometry can reach more than 0.999, basically be not subjected to the influence of lever pitching, be enough to satisfy the test needs.
(2) external interference: remainder does not need power supply the power supply except that the data collecting part needs in process of the test, can guarantee that like this experiment loading is not subjected to external interference, has guaranteed the one-time success rate of test.
(3) Installation and Debugging: can install smoothly for guaranteeing sample, it is 200-280mm that the design of testing machine crossbeam free end has elevating mechanism, the rise of elevating mechanism; Consider simultaneously when installing and conveniently to regulate setting height(from bottom) that testing machine is adjustable, and the guide pole place adopts the adjustment screw mechanism can carry out the test specimen installation easily.The adjustment of adjusting screw rod highly is 0～100mm.Like this, the testing machine pressure head among the design is designed to the 220-260mm that can raise.In addition pulley-wire rope part also design there is adjusting mechanism, because of the design in testing machine loading transfer than the design be about 1: 11, therefore when sample is installed, if pressure head rising 90mm, the counterweight end 990mm that need raise then, and the testing machine height overall should not be too high, and rope capacity also differs just suitably customized, and the adjusting mechanism that therefore designs wire rope can solve the contradiction of this respect.
(4) security: for guaranteeing that the test loading is reliable and stable in process of the test, avoid accidentalia such as the someone bumps, wind to influence load mass, must wire rope and counterweight partly be protected, so guard rail is arranged in this partial design of testing machine.Design the generation that guard rail also helps preventing other security incident simultaneously.
(5) self-equilibrating frame: frame adopts the steel plate welding to be connected the form that combines with bolt, makes it constitute the self-equilibrating frame, can reduce the requirement to mounting platform.
(6) test temperature: consider that some sample has strict test ambient temperature requirement, therefore design has the space that the high-low-temperature environmental testing case is installed on this testing machine, so that can carry out the creep test under the high low temperature.
(7) test figure collection: the test figure that needs to gather in the creep test process has parameters such as load, displacement and temperature.Load adopts force transducer to measure on this testing machine, and displacement is measured (also can carry out manual measurement with dial gauge or height gauge) with displacement transducer; Temperature is measured (also can carry out manual measurement with common thermometer) with temperature sensor.For the automaticity that makes testing machine increases, reduce laboratory technician's workload, we have developed a sets of data acquisition software, carry out data acquisition automatically with sensor-computer and preserve, and can conveniently analyze and analyze the influence of each factor to creep test to test figure like this.Three test parameters that collect are illustrated on the ordinate, with the time representation horizontal ordinate.So just can be very significantly on curve map, find out sample in each variation of size of creep compliance and ambient temperature and test load constantly to the influence of creep compliance size.
Claims (6)
1, the flexible member creep testing machine, comprise frame (6), chamber (8), several parts of creep test load maintainer (12), it is characterized in that: on the base (14) of frame, lay high low temperature experimental box (8), be placed with test specimen in the high low temperature experimental box (8), on frame left column (15), be provided with simultaneously the hinge (1) that loads lever (2) is installed, hinge (1) links to each other with loading lever (2) kink, loading lever (2) can be that hinge swings up and down with hinge (1), and is hung with the counterweight 10 that can load arbitrarily by wire rope (16) at the other end that loads lever (2).
2, flexible member creep test device according to claim 1 is characterized in that: the wire rope (16) of counterweight (10) links to each other with loading lever (2) through a travelling block mechanism (3) again.
3, flexible member creep test device according to claim 1 and 2 is characterized in that: the end at wire rope (16) also is provided with wire rope adjusting mechanism (7).
4, flexible member creep test device according to claim 1, it is characterized in that: the guard rail (9) that wire rope and counterweight are partly protected also is installed on the base (14) of frame, has in the upper end of frame right column (15) to allow and load the chute (17) that lever (2) swings up and down.
5, according to claim 1 or 4 described flexible member creep test devices, it is characterized in that: the bottom of chute 17 is equipped with and is adjusted the loading lever elevating mechanism 5 that loads lever reference position about in the of 2.
6, flexible member creep test device according to claim 1, it is characterized in that: between adjustable guide pole 4 and high low temperature experimental box 8, load transducer 11 is installed also, load transducer 11 is directly installed on the pressure head, and displacement transducer and temperature sensor are according to the concrete Dingan County of sample holding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03248571 CN2632662Y (en) | 2003-08-21 | 2003-08-21 | Elastic component creep tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03248571 CN2632662Y (en) | 2003-08-21 | 2003-08-21 | Elastic component creep tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632662Y true CN2632662Y (en) | 2004-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03248571 Expired - Lifetime CN2632662Y (en) | 2003-08-21 | 2003-08-21 | Elastic component creep tester |
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| CN (1) | CN2632662Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346112A (en) * | 2011-09-28 | 2012-02-08 | 中钢集团洛阳耐火材料研究院有限公司 | Load applying method of refractory material tester |
| CN102539257A (en) * | 2011-11-15 | 2012-07-04 | 中国商用飞机有限责任公司 | Device for measuring high temperature and low temperature resistance of sealing parts |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN102789726A (en) * | 2012-08-02 | 2012-11-21 | 首都医科大学 | Teaching experiment device and method for biology strip-shaped material mechanical property test |
| CN102980807A (en) * | 2012-11-23 | 2013-03-20 | 贵州航天林泉电机有限公司 | Method and device for testing load of linear telescoping mechanism |
| CN104122079A (en) * | 2013-04-25 | 2014-10-29 | 深圳市海洋王照明工程有限公司 | Key cap test method |
| CN107084885A (en) * | 2017-05-15 | 2017-08-22 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| CN108168998A (en) * | 2017-11-29 | 2018-06-15 | 中国飞机强度研究所 | A kind of load amplifying device for loading |
| CN109060624A (en) * | 2018-08-10 | 2018-12-21 | 河海大学 | A kind of method and permeability apparatus for studying drainage pipe water seepage drainage effect |
| CN109540676A (en) * | 2019-01-05 | 2019-03-29 | 北京交通大学 | It is a kind of using servo loading, the soft rock single shaft creepmeter of mechanical pressure stabilizing |
| CN110608955A (en) * | 2019-10-22 | 2019-12-24 | 中国工程物理研究院化工材料研究所 | Series compression loading device for cylindrical samples |
| CN111735718A (en) * | 2020-07-20 | 2020-10-02 | 西安交通大学 | Multi-station integrated environment glass fiber reinforced plastic bending creep test device and test method |
| CN113029802A (en) * | 2021-04-20 | 2021-06-25 | 中南大学 | High-precision testing method for equivalent elastic statics parameters of dot matrix material |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN110608955B (en) * | 2019-10-22 | 2024-06-11 | 中国工程物理研究院化工材料研究所 | Tandem compression loading device for cylindrical samples |
-
2003
- 2003-08-21 CN CN 03248571 patent/CN2632662Y/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346112A (en) * | 2011-09-28 | 2012-02-08 | 中钢集团洛阳耐火材料研究院有限公司 | Load applying method of refractory material tester |
| CN102539257A (en) * | 2011-11-15 | 2012-07-04 | 中国商用飞机有限责任公司 | Device for measuring high temperature and low temperature resistance of sealing parts |
| CN102539257B (en) * | 2011-11-15 | 2015-07-08 | 中国商用飞机有限责任公司 | Device for measuring high temperature and low temperature resistance of sealing parts |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN102749250B (en) * | 2012-07-06 | 2014-03-19 | 四川大学 | Uniaxial-creep testing machine |
| CN102789726A (en) * | 2012-08-02 | 2012-11-21 | 首都医科大学 | Teaching experiment device and method for biology strip-shaped material mechanical property test |
| CN102980807A (en) * | 2012-11-23 | 2013-03-20 | 贵州航天林泉电机有限公司 | Method and device for testing load of linear telescoping mechanism |
| CN102980807B (en) * | 2012-11-23 | 2015-08-26 | 贵州航天林泉电机有限公司 | The load test approach of linear telescopic mechanism and device |
| CN104122079A (en) * | 2013-04-25 | 2014-10-29 | 深圳市海洋王照明工程有限公司 | Key cap test method |
| CN107084885B (en) * | 2017-05-15 | 2019-04-19 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| CN107084885A (en) * | 2017-05-15 | 2017-08-22 | 嘉兴职业技术学院 | A kind of concrete creep test method used for methane tank |
| CN108168998A (en) * | 2017-11-29 | 2018-06-15 | 中国飞机强度研究所 | A kind of load amplifying device for loading |
| CN109060624A (en) * | 2018-08-10 | 2018-12-21 | 河海大学 | A kind of method and permeability apparatus for studying drainage pipe water seepage drainage effect |
| CN109060624B (en) * | 2018-08-10 | 2023-10-27 | 河海大学 | Method for researching seepage-discharging effect of seepage-discharging pipe and seepage device |
| CN109540676A (en) * | 2019-01-05 | 2019-03-29 | 北京交通大学 | It is a kind of using servo loading, the soft rock single shaft creepmeter of mechanical pressure stabilizing |
| CN109540676B (en) * | 2019-01-05 | 2023-12-12 | 北京交通大学 | Soft rock uniaxial creep gauge adopting servo loading and mechanical voltage stabilization |
| CN110608955A (en) * | 2019-10-22 | 2019-12-24 | 中国工程物理研究院化工材料研究所 | Series compression loading device for cylindrical samples |
| CN110608955B (en) * | 2019-10-22 | 2024-06-11 | 中国工程物理研究院化工材料研究所 | Tandem compression loading device for cylindrical samples |
| CN111735718A (en) * | 2020-07-20 | 2020-10-02 | 西安交通大学 | Multi-station integrated environment glass fiber reinforced plastic bending creep test device and test method |
| CN113029802A (en) * | 2021-04-20 | 2021-06-25 | 中南大学 | High-precision testing method for equivalent elastic statics parameters of dot matrix material |
| CN113029802B (en) * | 2021-04-20 | 2022-10-18 | 中南大学 | High-precision testing method for equivalent elastic statics parameters of dot matrix material |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130821 Granted publication date: 20040811 |