CN201748898U - Thermal deformation detecting instrument - Google Patents
Thermal deformation detecting instrument Download PDFInfo
- Publication number
- CN201748898U CN201748898U CN2010202332032U CN201020233203U CN201748898U CN 201748898 U CN201748898 U CN 201748898U CN 2010202332032 U CN2010202332032 U CN 2010202332032U CN 201020233203 U CN201020233203 U CN 201020233203U CN 201748898 U CN201748898 U CN 201748898U
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- plate
- load
- baking oven
- pressing plate
- lower plate
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Abstract
The utility model discloses a thermal deformation detecting instrument, which comprises a drying oven, wherein a sample holder is arranged inside the driving oven. The thermal deformation detecting instrument is characterized in that the sample holder comprises an upper plate, a lower plate and a load press plate arranged between the upper plate and the lower plate; guide posts which are fixedly connected with the upper plate and the lower plate are arranged around the sample holder and vertically pass through the load press plate; a load press lever is vertically arranged in the middle of the upper surface of the load press plate, penetrates through the upper plate and is connected with a bearing tray arranged outside the sample holder; and a displacement measuring device is arranged on the guide posts between the load press plate and the lower plate. The utility model has the advantages that the measured deviation can be caused by the deformation and inclination of the sample, the complete self weight and the nonuniform heat inside the drying oven and the accuracy of measuring result can be ensured.
Description
Technical field
The utility model relates to a kind of surveying instrument, especially relates to a kind of heat deformation detection instrument.
Background technology
Heat deformation detection instrument is a kind of surveying instrument that is used to measure macromolecular material or polymkeric substance heat distortion amount, it is that macromolecular material or polymkeric substance are applied certain load that thermal deformation detects, keeping the deflection that the regular hour caused under the temperature of regulation, is a kind of measuring method of weighing polymkeric substance or macromolecular material thermotolerance quality.
Existing heat deformation detection instrument comprises the dial gauge of baking oven, baking oven outer setting and the specimen mounting that oven interior is provided with, during measurement, sample is positioned over passes through dial gauge in the specimen mounting, measure the deflection of sample, have advantage simple in structure, easy to use, but, because dial gauge is positioned at a side of specimen mounting, and the inclination of all directions may take place behind the sample deformation, will have a strong impact on the accuracy of test figure; The weight that exists owing to dial gauge self may influence the situation that sample is out of shape, thereby cause the measurement data fluctuation ratio bigger under certain load simultaneously; Because the air hole of baking oven generally is positioned at the middle position on baking oven top, dial gauge need be connected with the specimen mounting of oven interior by the air hole of baking oven, because dial gauge is positioned at a side of specimen mounting, therefore the sample in the specimen mounting is positioned at the edge of baking oven, it is inhomogeneous to cause sample to be heated in baking oven, can influence the accuracy of measurement data equally.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of avoiding because sample deformation tilts, dial gauge own wt and sample be in the oven interior inhomogeneous measured deviation that causes of being heated, thereby improves the heat deformation detection instrument of measurement result accuracy.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of heat deformation detection instrument, comprise baking oven, described oven interior is provided with specimen mounting, described specimen mounting comprises upper plate, lower plate and be horizontally placed on upper plate and lower plate between the load pressing plate, be provided with around the described specimen mounting and be used for fixing the guide pillar that connects upper plate and lower plate, described guide pillar vertically passes described load pressing plate, the upper face center of described load pressing plate is vertically installed with the load depression bar, described load depression bar passes described upper plate and is connected with the load-bearing plate of specimen mounting outer setting, and the guide pillar between described load pressing plate and the described lower plate is provided with displacement measuring device.
Described displacement measuring device is a vernier.
Described displacement measuring device is a displacement transducer, described baking oven is outside equipped with the displacement transducer display interface, described displacement transducer display interface is connected with described load-bearing plate by connecting link, and described connecting link passes the air hole that the baking oven center upper portion is provided with.
Described baking oven is outside equipped with dial gauge, and described dial gauge transmits bar by deflection and is connected with described load-bearing plate center, and described deflection transmits bar and passes the air hole that the baking oven center upper portion is provided with.
Described load pressing plate can move up and down along described guide pillar.
Compared with prior art, advantage of the present utility model is: because specimen mounting comprises upper plate, lower plate and be horizontally placed on upper plate and lower plate between the load pressing plate, be provided with around the specimen mounting and be used for fixing the guide pillar that connects upper plate and lower plate, guide pillar vertically passes the load pressing plate, the upper face center of load pressing plate is vertically installed with the load depression bar, the load depression bar passes upper plate and is connected with the load-bearing plate of specimen mounting outer setting, guide pillar between load pressing plate and the lower plate is provided with displacement measuring device, sample can be placed specimen mounting internal loading pressing plate under, on load-bearing plate, place the counterweight of certain load, the control temperature of oven, by the displacement measuring device on the guide pillar, measure the variable quantity of sample deformation front and back size, can avoid because sample deformation tilts, dial gauge own wt and sample are in the oven interior measured deviation that inequality causes of being heated, guarantee the accuracy of measurement result, it is low to have a cost, the accuracy height, the advantage of good reliability.
Description of drawings
Fig. 1 is the heat deformation detection instrument of the utility model embodiment 1;
Fig. 2 is the heat deformation detection instrument of the utility model embodiment 2;
Fig. 3 is the heat deformation detection instrument of the utility model embodiment 3.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of heat deformation detection instrument, comprise baking oven (1), baking oven (1) inside is provided with specimen mounting (2), specimen mounting comprises upper plate (3), lower plate (4) and be horizontally placed on upper plate (3) and lower plate (4) between load pressing plate (5), specimen mounting is provided with the guide pillar 6 that is used for fixing upper plate (3) and lower plate (4) for (2) four jiaos, guide pillar (6) vertically passes load pressing plate (5), load pressing plate (5) can move up and down along guide pillar (6), load pressing plate (5) upper face center is vertically installed with load depression bar (7), load depression bar (7) passes upper plate (3) and is connected with the load-bearing plate (8) of specimen mounting outer setting, and it is vernier that the guide pillar (6) between load pressing plate (5) and the lower plate (4) is provided with displacement measuring device (9).
Test procedure:
1) general assembly (TW) of weighing load pressing plate, load depression bar, load-bearing plate on balance is chosen suitable counterweight.
The total load that sample bears is P, and counterweight Weight Calculation formula is as follows:
W＝P-R
W in the formula---counterweight weight, kg;
The general assembly (TW) of R---load pressing plate, load depression bar, weighing pan, kg
2) the load pressing plate of inspection thermal deformation instrument can move by easy on and off it.
3) baking oven is warming up to 127 ± 1 ℃, constant temperature half an hour.
4) require in accordance with regulations to place the Pall ring sample, make its center place load pressing plate center.
5) put into sample after, record vernier initial position is finished in 15s.
6) sample keeps 16h in baking oven, behind the taking-up sample, and record vernier final position.
7) mean value of getting four vernier displacements is the long term thermal deflection of Pall ring sample.
Compared with prior art, it is low that the utility model heat deformation detection instrument has a cost, and good reliability is adapted at the characteristics that factory uses, and measures the uncertainty that repeatability causes by deflection simultaneously and obviously diminish, and accuracy improves.
Embodiment 2:
As shown in Figure 2, a kind of heat deformation detection instrument, comprise baking oven (1), baking oven (1) inside is provided with specimen mounting (2), specimen mounting comprises upper plate (3), lower plate (4) and be horizontally placed on upper plate (3) and lower plate (4) between load pressing plate (5), specimen mounting is provided with for (2) four jiaos and is used for fixing the guide pillar (6) that connects upper plate (3) and lower plate (4), guide pillar (6) vertically passes load pressing plate (5), load pressing plate (5) can move up and down along guide pillar (6), load pressing plate (5) upper face center is vertically installed with load depression bar (7), load depression bar (7) passes upper plate (3) and is connected with the load-bearing plate (8) of specimen mounting outer setting, it is displacement transducer that guide pillar (6) between load pressing plate (5) and the lower plate (4) is provided with displacement measuring device (9), baking oven (1) is outside equipped with the displacement transducer display interface (10) that is used with displacement transducer, displacement transducer display interface (10) is connected with load-bearing plate (8) by connecting link (11), and connecting link (11) passes the air hole that baking oven (1) center upper portion is provided with.
Test procedure:
1) general assembly (TW) of weighing load pressing plate, load depression bar, weighing pan on balance is determined displacement transducer display interface additional force, chooses suitable counterweight.
The total load that sample bears is P, and counterweight Weight Calculation formula is as follows:
W＝P-R-T
W in the formula---counterweight weight, kg;
The general assembly (TW) of R---load pressing plate, load depression bar, weighing pan, kg;
T---displacement transducer display interface additional force, kg.
2) state of inspection displacement transducer confirms that it can correctly show.
3) baking oven is warming up to 127 ± 1 ℃, constant temperature half an hour.
4) require in accordance with regulations to place the Pall ring sample, make its center place load pressing plate center.
5) put into sample after, with the zero clearing of displacement transducer data, in 15s, finish.
6) sample keeps 16h in baking oven, according to the demonstration at displacement transducer interface, and the displacement of four displacement transducers of record.
7) mean value of getting four displacement transducer displacements is the long term thermal deflection of Pall ring sample.
Compared with prior art, the utility model heat deformation detection instrument has measurement accurately, is fit to the characteristics of scientific research, testing agency's use, and the uncertainty that is caused by deflection measurement repeatability, dial gauge accuracy obviously diminishes simultaneously, and accuracy improves.
As shown in Figure 3, a kind of heat deformation detection instrument, comprise baking oven (1), baking oven (1) inside is provided with specimen mounting (2), specimen mounting comprises upper plate (3), lower plate (4) and be horizontally placed on upper plate (3) and lower plate (4) between load pressing plate (5), specimen mounting (2) is provided with all around and is used for fixing the guide pillar (6) that connects upper plate (3) and lower plate (4), guide pillar (6) vertically passes load pressing plate (5), load pressing plate (5) can move up and down along guide pillar (6), load pressing plate (5) upper face center is vertically installed with load depression bar (7), load depression bar (7) passes upper plate (3) and is connected with the load-bearing plate (8) of specimen mounting outer setting, guide pillar (6) between load pressing plate (5) and the lower plate (4) is provided with displacement measuring device (9), baking oven (1) is outside equipped with dial gauge (12), dial gauge (12) transmits bar (13) by deflection and is connected with described load-bearing plate (8) center, and deflection transmits bar (13) and passes the air hole that the baking oven center upper portion is provided with.
Test procedure:
1) general assembly (TW) of weighing load pressing plate, load depression bar, weighing pan on balance is determined the additional force of dial gauge, chooses suitable counterweight.
The total load that sample bears is P, and counterweight Weight Calculation formula is as follows:
W＝P-R-T
W in the formula---counterweight weight, kg;
The general assembly (TW) of R---load pressing plate, load depression bar, weighing pan, kg;
T---dial gauge additional force, kg.
2) check the load pressing plate, it can be moved by easy on and off, check dial gauge, install vertical, sensitive reliable.
3) baking oven is warming up to 127 ± 1 ℃, constant temperature half an hour.
4) require in accordance with regulations to place the Pall ring sample, make its center place load pressing plate center.
5) put into sample after, with dial gauge zeroing, in 15s, finish.
6) sample keeps 16h in baking oven, and the final reading of record dial gauge is the heat distortion amount of sample.
Compared with prior art, the utility model heat deformation detection instrument has obviously reduced the fluctuation of measurement data, reduce because the sample that sample deformation tilts, the dial gauge own wt causes tilts and sample in the oven interior measured deviation that inequality causes of being heated.
Claims (5)
1. heat deformation detection instrument, comprise baking oven, described oven interior is provided with specimen mounting, it is characterized in that: described specimen mounting comprises upper plate, lower plate and be horizontally placed on upper plate and lower plate between the load pressing plate, be provided with around the described specimen mounting and be used for fixing the guide pillar that connects upper plate and lower plate, described guide pillar vertically passes described load pressing plate, the upper face center of described load pressing plate is vertically installed with the load depression bar, described load depression bar passes described upper plate and is connected with the load-bearing plate of specimen mounting outer setting, and the guide pillar between described load pressing plate and the described lower plate is provided with displacement measuring device.
2. heat deformation detection instrument according to claim 1 is characterized in that: described displacement measuring device is a vernier.
3. heat deformation detection instrument according to claim 1, it is characterized in that: described displacement measuring device is a displacement transducer, described baking oven is outside equipped with the displacement transducer display interface, described displacement transducer display interface is connected with described load-bearing plate by connecting link, and described connecting link passes the air hole that the baking oven center upper portion is provided with.
4. heat deformation detection instrument according to claim 1, it is characterized in that: described baking oven is outside equipped with dial gauge, described dial gauge transmits bar by deflection and is connected with described load-bearing plate center, and described deflection transmits bar and passes the air hole that the baking oven center upper portion is provided with.
5. heat deformation detection instrument according to claim 1 is characterized in that: described load pressing plate can move up and down along described guide pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202332032U CN201748898U (en) | 2010-06-21 | 2010-06-21 | Thermal deformation detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202332032U CN201748898U (en) | 2010-06-21 | 2010-06-21 | Thermal deformation detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748898U true CN201748898U (en) | 2011-02-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202332032U Expired - Lifetime CN201748898U (en) | 2010-06-21 | 2010-06-21 | Thermal deformation detecting instrument |
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| Country | Link |
|---|---|
| CN (1) | CN201748898U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865646A (en) * | 2010-06-21 | 2010-10-20 | 宁波市产品质量监督检验研究院 | Heat deformation detection instrument |
| CN102393334A (en) * | 2010-06-21 | 2012-03-28 | 宁波市产品质量监督检验研究院 | Thermal deformation detector |
| CN110243268A (en) * | 2019-06-10 | 2019-09-17 | 中国二十冶集团有限公司 | Volume of concrete linear deformation tester and test method |
-
2010
- 2010-06-21 CN CN2010202332032U patent/CN201748898U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865646A (en) * | 2010-06-21 | 2010-10-20 | 宁波市产品质量监督检验研究院 | Heat deformation detection instrument |
| CN102393334A (en) * | 2010-06-21 | 2012-03-28 | 宁波市产品质量监督检验研究院 | Thermal deformation detector |
| CN110243268A (en) * | 2019-06-10 | 2019-09-17 | 中国二十冶集团有限公司 | Volume of concrete linear deformation tester and test method |
| CN110243268B (en) * | 2019-06-10 | 2021-06-04 | 中国二十冶集团有限公司 | Concrete volume linear deformation tester and testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110216 Effective date of abandoning: 20111123 |