CN203894121U - Three-point overhang curving creep parameter measuring device - Google Patents

Three-point overhang curving creep parameter measuring device Download PDF

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Publication number
CN203894121U
CN203894121U CN201420186859.1U CN201420186859U CN203894121U CN 203894121 U CN203894121 U CN 203894121U CN 201420186859 U CN201420186859 U CN 201420186859U CN 203894121 U CN203894121 U CN 203894121U
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CN
China
Prior art keywords
support
sensor
charger
slide block
workpiece
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Withdrawn - After Issue
Application number
CN201420186859.1U
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Chinese (zh)
Inventor
孟龙晖
何宁
李亮
杨吟飞
赵威
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Priority to CN201420186859.1U priority Critical patent/CN203894121U/en
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Publication of CN203894121U publication Critical patent/CN203894121U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model discloses a three-point overhang curving creep parameter measuring device. A horizontal clamping device of the measuring device comprises an upper chuck and a lower chuck, wherein the upper chuck and the lower chuck are connected with a workpiece support through a slide-block structure and can respectively make horizontal movement and vertical movement along the workpiece support; a loading device is connected with a loading device support through a slide-block structure and can horizontally move along the loading device support; a laser displacement sensor is connected with a sensor supporting device through a slide-block structure and can horizontally move along the sensor supporting device; the sensor supporting device is connected with a sensor support through a slide-block structure and can vertically move along the sensor support. By adopting the three-point overhang curving creep parameter measuring device, the three-point curving creep experiment of different components in different sizes can be realized, the proportion among three points can be conveniently adjusted, a needed load can be conveniently loaded according to the requirement, and the position of the displacement sensor can be changed along the variation of the position of the loading device, so that the curving creep variation rate of a workpiece can be conveniently measured.

Description

A kind of 3 overhanging bending creep parameter measuring apparatus
Technical field
The utility model relates to creep parameters fields of measurement, specifically a kind of 3 overhanging bending creep parameter measuring apparatus.
Background technology
At industrial numerous areas, equipment is in complicated, severe working environment, and it involves great expense, and in whole production run, its effect is irreplaceable.Once equipment stops because accident is unplanned, may cause heavy losses.And creep rupture is a kind of very important form of destroying under high temperature, high-stress state.Accurate measurement to equipment creep parameters, can greatly reduce because the loss that equipment causes because of creep rupture.
At traditional uniaxial tension creep test, adopt standard sample to obtain the creep parameters of material, often need lot of materials, draw materials in a large number and also can bring destruction to original equipment, affect the normal operation of equipment simultaneously.And sometimes also can cannot meet the requirement of traditional performance test to specimen size because materialsed volume is too little in some small device reliability experiment, and cause experiment to carry out.
In the check and life appraisal of commercial unit material property, to adopt as far as possible on the one hand harmless or half method of damaging detection, must obtain to greatest extent again on the other hand the mechanical property of material, microminiature sample is the effective ways that solve this double-barreled question.That study the earliest the method is Dom and Niebuhr.The theoretical research work of bending creep test has obtained many progress so far, carrys out microstructure and the mechanical property of research material by different experiments parameter, but it is rare at present from the data obtained, directly to obtain the method for material creep parameter.The Ma Yuanrui of East China University of Science has proposed the croop property that symmetrical three-point bending test method is measured material, but it does not provide a practicable experimental provision, the people such as the Xu of Northwestern Polytechnical University have proposed asymmetrical overhanging bending creep test method, its experimental provision is simple, but the range of size to part is had relatively high expectations, the thickness of part particularly, must more accurately coincide guarantee part in the position of level with experimental provision, and the ratio of its device between 3 fixed, cannot adjust, the more important thing is that the measurement for the bending change rate of part does not propose a reasonable measure.
Utility model content
The utility model is in order to improve the defect of existing creep parameters measuring technique, a kind of 3 overhanging bending creep parameter measuring apparatus are provided, part for different size all can be realized three-point bending creep test, and the ratio between 3 can conveniently regulate.
The utility model provides a kind of 3 overhanging bending creep parameter measuring apparatus, comprise base, base two ends are respectively equipped with perpendicular to the work support of base and sensor stand, and work support middle part, by the fixing workpiece for measurement one end of clamping device, makes workpiece for measurement parallel with base; Work support upper end is connected with the charger support parallel with workpiece for measurement, the charger vertical with workpiece for measurement is housed on charger support, weight payload platform is equipped with in charger upper end, and the support osculatory of charger lower end contacts with the workpiece for measurement other end; Directly over charger, be provided with the laser displacement sensor that connects computer, laser displacement sensor is connected with sensor stand by sensor support device, described level adds holds device and comprises upper grip and lower chuck, two chucks are connected with work support by slide block structure, can move horizontally with vertical mobile along work support respectively; Charger is connected with charger support by slide block structure, can move along charger support level; Laser displacement sensor is connected with sensor support device by slide block structure, can move horizontally along sensor support device; Sensor support device is connected with sensor stand by slide block structure, can vertically move along sensor stand.
Further improve, described slide block device comprises slide block and chute, and slide block and chute side all have fastening screw pit, spacing by fastening bolt between slide block and chute.
The utility model beneficial effect is: the part for different size all can be realized three-point bending creep test, ratio between 3 can conveniently regulate, required load can facilitate loading as required, the position of displacement transducer can change with the variation of charger position, makes more convenient the measuring of bending creep rate of change energy of workpiece.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model base and main supporting structure schematic diagram.
Fig. 3 is charger structural representation.
Fig. 4 is charger slide block structure schematic diagram.
Fig. 5 is sensor support apparatus structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Structure of the present utility model as 1 and Fig. 2 as shown in, comprise base 10, base 10 two ends are respectively equipped with perpendicular to the work support 17 of base 10 and sensor stand 11.Work support 17 middle parts are by fixing workpiece for measurement 9 one end of clamping device, and clamping device comprises upper grip 7 and lower chuck 8.Work support 17 middle parts have upper grip vertical chute 14 and the horizontal slide opening 15 of lower chuck.Upper grip 7 self, as slide block, can slide up and down in upper grip vertical chute 14, and fastening screw pit and fastening bolt by work support 17 sides carry out spacing.Lower chuck 8 self is as slide block, can horizontal slip in the horizontal slide opening 15 of lower chuck, and fastening screw pit and fastening bolt by work support 17 sides carry out spacing.One end of workpiece for measurement clamps by upper lower chuck, makes workpiece for measurement 9 parallel with base 10.
Work support 17 upper ends are connected with the charger support 16 parallel with workpiece for measurement 9, on charger support 16, have charger chute 13, charger slide block 19 is housed in charger chute 13, and charger slide block 19 can horizontal slip in charger chute 13.In the middle of charger slide block 19, have charger pilot hole 18(as shown in Figure 4), charger 6 is through charger pilot hole 18, and the support osculatory 21 of its lower end contacts with workpiece for measurement 9 other ends.Weight payload platform 20(is equipped with as shown in Figure 3 in charger 6 upper ends), weight payload platform 20 is for bearing load weight 5.
Sensor stand 11 sides have sensor stand chute, sensor support device 3 is L-type, its side is with bracing frame slide block 12(as shown in Figure 5), bracing frame slide block 12 vertically slides in sensor stand chute, spacing by fastening screw pit and the fastening bolt of side.
Sensor support device 3 tops have sensor chute 2, and laser displacement sensor 1 self is as slide block, and horizontal slip in sensor chute 2 is spacing by fastening screw pit and the fastening bolt of side.Laser displacement sensor 1 is connected with computer 4.
The method of work of this device comprises the following steps:
1) according to the thickness of workpiece for measurement, by slide block structure, regulate the upper lower chuck of clamping device, by fastening bolt fixed chuck, clamp workpiece for measurement;
2), according to the length of workpiece for measurement, by the horizontal level of slide block structure adjusting load device, the support osculatory of charger lower end is contacted with workpiece end;
3) by adjusting, add and hold the horizontal level of device chuck and the horizontal level of charger, the ratio between regulating at 3;
4) by slide block structure, regulate the horizontal level of laser displacement sensor, laser displacement sensor is positioned at directly over charger, by fastening bolt fixed laser displacement transducer;
5) on weight payload platform, place load weight;
6) by the slide block structure between sensor support device and sensor stand, regulate the height of laser displacement sensor, make within the height of laser displacement sensor and load weight is positioned at the effective range of laser displacement sensor, to utilize laser displacement sensor to measure the height of load weight;
7) on weight payload platform, place the load weight of different numbers, repeating step 6), utilize PC to measure and record the time dependent relation of height of load weight, can obtain the time dependent process of workpiece for measurement bending creep.
The process of the creep of workpiece is a process quite slowly, if frequency acquisition is too high when carrying out data acquisition with laser displacement sensor, often both unnecessary, and can cause data volume excessive, finally causes the difficulty of data processing.When gathering, often the sample frequency of 1 hertz is enough.
The concrete application approach of the utility model is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.

Claims (2)

1. 3 overhanging bending creep parameter measuring apparatus, comprise base (10), base (10) two ends are respectively equipped with perpendicular to the work support (17) of base (10) and sensor stand (11), work support (17) middle part, by fixing workpiece for measurement (9) one end of clamping device, makes workpiece for measurement (9) parallel with base (10); Work support (17) upper end is connected with the charger support (16) parallel with workpiece for measurement (9), the charger (6) vertical with workpiece for measurement (9) is housed on charger support (16), weight payload platform (20) is equipped with in charger (6) upper end, and the support osculatory (21) of charger (6) lower end contacts with workpiece for measurement (9) other end; Directly over charger (6), be provided with the laser displacement sensor (1) that connects computer (4), laser displacement sensor (1) is connected with sensor stand (11) by sensor support device (3), it is characterized in that: described level adds holds device and comprise upper grip (7) and lower chuck (8), two chucks are connected with work support (17) by slide block structure, can move horizontally with vertical mobile along work support (17) respectively; Charger (6) is connected with charger support (16) by slide block structure, can move horizontally along charger support (16); Laser displacement sensor (1) is connected with sensor support device (3) by slide block structure, can move horizontally along sensor support device (3); Sensor support device (3) is connected with sensor stand (11) by slide block structure, can vertically move along sensor stand (11).
2. 3 overhanging bending creep parameter measuring apparatus according to claim 1, is characterized in that: described slide block device comprises slide block and chute, and slide block and chute side all have fastening screw pit, spacing by fastening bolt between slide block and chute.
CN201420186859.1U 2014-04-17 2014-04-17 Three-point overhang curving creep parameter measuring device Withdrawn - After Issue CN203894121U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420186859.1U CN203894121U (en) 2014-04-17 2014-04-17 Three-point overhang curving creep parameter measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420186859.1U CN203894121U (en) 2014-04-17 2014-04-17 Three-point overhang curving creep parameter measuring device

Publications (1)

Publication Number Publication Date
CN203894121U true CN203894121U (en) 2014-10-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940679A (en) * 2014-04-17 2014-07-23 南京航空航天大学 Three-point externally extending bending creep parameter measurement device and operating method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940679A (en) * 2014-04-17 2014-07-23 南京航空航天大学 Three-point externally extending bending creep parameter measurement device and operating method thereof
CN103940679B (en) * 2014-04-17 2015-11-18 南京航空航天大学 A kind of 3 overhanging bending creep parameter measuring apparatus and method of work thereof

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20141022

Effective date of abandoning: 20151118

C25 Abandonment of patent right or utility model to avoid double patenting