CN103076249B - Calibration device for calibration of rock circumferential deformation extensometer - Google Patents
Calibration device for calibration of rock circumferential deformation extensometer Download PDFInfo
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- CN103076249B CN103076249B CN201210586353.5A CN201210586353A CN103076249B CN 103076249 B CN103076249 B CN 103076249B CN 201210586353 A CN201210586353 A CN 201210586353A CN 103076249 B CN103076249 B CN 103076249B
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- frustum
- rock
- circumferential deformation
- slide block
- caliberating device
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012669 compression test Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a calibration device for calibration of a rock circumferential deformation extensometer. The calibration device comprises a fixed connection part, a vertical sliding block, a transverse sliding disc and a tray, wherein an extending part is arranged at the lower end of the fixed connection part; a central hole is formed on the fixed connection part; the vertical sliding block comprises a conical platform; the axis of the fixed connection part is superposed with the axis of the central hole; the tray is positioned below the extending part; a through hole suitable for the conical platform to pass through is formed in the center of the tray; the transverse sliding disc is positioned between the extending part and the tray and is formed by splicing a plurality of fan-shaped blocks; the inner end face of each fan-shaped block is an inclined surface; the inclined angle of the inclined surface is as same as the inclined angle of the conical surface of the conical platform; a guide groove is formed in the center of each fan-shaped block along the radial direction; a guide block is arranged in the guide groove; the guide block is fixedly connected to the tray and the extending part; the width of the guide groove is as same as the width of the guide block; the length of the guide groove is more than the length of the guide block; and when all the fan-shaped blocks radially slide to the innermost end, the outer diameter of the transverse sliding disc is as same as the diameter of a rock test sample, and the inner end faces of the fan-shaped blocks and the conical face of the conical platform form contact interference.
Description
Technical field
The present invention relates to a kind of extensometer caliberating device, particularly relating to a kind of caliberating device for directly demarcating rock circumferential deformation extensometer.
Background technology
In rock-soil material compression test, usually adopt hoop extensometer accurately to measure hoop or the radial deformation of rock-soil material, rock ring is stuck in the two ends of one group of chain to two edges of a knife of extensometer, chain by elastic circlip around rock sample outer ring, when rock sample expands and expands outwardly, measure the opening displacement amount between the edge of a knife of chain both ends, be the variable quantity of rock sample section girth.In order to ensure measured value accurately and reliably, need to demarcate extensometer in advance.
In prior art, be not directly used in the device that rock circumferential deformation extensometer is demarcated, generally can only the edge of a knife of extensometer be placed between the push rod of calibration device, demarcate the opening displacement amount of the edge of a knife.Consider the specimen finish of different size, by the impact of chain dimension and quantity, there is certain deviation in variable quantity and the chain ends opening displacement amount of sample cross girth.Therefore the opening displacement only demarcating the edge of a knife accurately can not reflect the change of section girth.Need a kind of device that can produce accurate hoop displacement to demarcate the relation between the swell increment of chain and extensometer output quantity, go the circumferential deformation measuring rock sample to be only accurately again based on this relation.
Summary of the invention
The invention provides a kind of caliberating device demarcated for rock circumferential deformation extensometer, solving circumferential deformation extensometer in prior art cannot directly demarcate, and affects the problem of measuring accuracy.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, comprise the portion of being fixedly connected with, vertical slide block, horizontal sliding disc and pallet, the described upper end being fixedly connected with portion connects calibration device crossbeam, lower end outer wall is provided with extension radially, describedly be fixedly connected with center pit portion being also provided with and being suitable for vertical slide block and entering, described vertical slide block comprises a frustum, the axis of described frustum and the dead in line of center pit, the bottom of described vertical slide block connects calibration device micrometer head push rod, described pallet is positioned at the below of extension, the center of pallet is provided with the through hole being suitable for frustum and passing, described horizontal sliding disc is combined into by multiple secter pat between extension and pallet, the inner face of each secter pat is inclined-plane, the inclination angle on described inclined-plane is identical with the conical inclination of frustum, each secter pat center radially has gathering sill, orienting lug is provided with in described gathering sill, described orienting lug is fixed on pallet and extension, the width of described gathering sill is identical with the width of orienting lug, length is greater than the length of orienting lug, when all secter pats radially slide inner terminal, the external diameter of horizontal sliding disc is identical with the diameter of rock sample, the inner face of secter pat can be formed to contact with the conical surface of frustum interferes.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and wherein said frustum is the frustum of a pyramid, and the secter pat quantity of described horizontal sliding disc is identical with frustum of a pyramid conical surface number.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and wherein said frustum is hexagonal pyramid platform, and the aspect ratio of described hexagonal pyramid platform small end circumscribed circle diameter and hexagonal pyramid platform is 1:10, and described horizontal sliding disc is combined into by 6 secter pats.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and the difference of wherein said gathering sill length and orienting lug length is more than or equal to the half of extensometer range.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and wherein said gathering sill and orienting lug are Long Circle.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, wherein said vertical slide block is made up of hexagonal pyramid platform and cylinder connection, the bottom centre of vertical slide block is provided with counterbore and is suitable for the insertion of calibration device micrometer head push rod, and the sidewall of described counterbore also has threaded hole.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and the frustum of wherein said vertical slide block is the frustum of a cone.
The present invention is used for the caliberating device that rock circumferential deformation extensometer is demarcated, and wherein said frustum replaces with cone.
The caliberating device difference from prior art that the present invention is used for the demarcation of rock circumferential deformation extensometer is that the caliberating device that the present invention demarcates for rock circumferential deformation extensometer coordinates with horizontal sliding disc by arranging vertical slide block, calibration device micrometer head push rod is promoted vertical slide block to move up and down and change the uniform radial dilatation of horizontal sliding disc into, the circumferential deformation of simulation rock, and then the deformation measurement situation of accurate calibration extensometer, solve circumferential deformation extensometer in prior art can not directly demarcate, the error problem that can only produce indirectly by demarcating edge of a knife joint open.
The present invention is used in the caliberating device of rock circumferential deformation extensometer demarcation, arranging vertical slide block is hexagonal pyramid platform, the aspect ratio of hexagonal pyramid platform small end circumscribed circle diameter and hexagonal pyramid platform is 1:10, horizontal sliding disc is combined into by 6 secter pats, and the length of gathering sill is greater than orienting lug length, and its difference is more than or equal to the half of extensometer range, vertical slide block is moved up 10mm, secter pat radial outward dilations 0.5mm, has elongated the journey time of circumferential deformation, the reduction measuring error of trying one's best.
Below in conjunction with accompanying drawing, the caliberating device for the demarcation of rock circumferential deformation extensometer of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the cut-open view of the caliberating device that the present invention demarcates for rock circumferential deformation extensometer;
The vertical view of horizontal sliding disc in Fig. 2 caliberating device that to be the present invention demarcate for rock circumferential deformation extensometer;
Fig. 3 is the three-dimensional structure diagram of the caliberating device that the present invention demarcates for rock circumferential deformation extensometer.
Embodiment
As shown in Figure 1,3, the caliberating device that the present invention is used for the demarcation of rock circumferential deformation extensometer comprises the portion of being fixedly connected with 1, vertical slide block 2, horizontal sliding disc 3 and pallet 4, the upper end being fixedly connected with portion 1 connects calibration device crossbeam, lower end outer wall is provided with extension 5 radially, is fixedly connected with the center pit 6 portion 1 being also provided with and being suitable for vertical slide block and entering.Vertical slide block 2 is made up of hexagonal pyramid platform and cylinder connection, axis and the dead in line being fixedly connected with portion's center pit 6 of hexagonal pyramid platform, the bottom centre of vertical slide block 2 is provided with counterbore 7, be suitable for calibration device micrometer head push rod to insert, the sidewall of counterbore 7 has threaded hole, and the aspect ratio of hexagonal pyramid platform small end circumscribed circle diameter and hexagonal pyramid platform is 1:10.Pallet 4 is positioned at the below of extension 5, and its center is provided with the through hole 8 being suitable for hexagonal pyramid platform and passing.As shown in Figure 2, horizontal sliding disc 3 is combined into by 6 secter pats between extension 5 and pallet 4, the inner face of each secter pat is inclined-plane, the inclination angle on inclined-plane is identical with the conical inclination of frustum, each secter pat center radially has Long Circle gathering sill 9, oblong orienting lug 10 is provided with in gathering sill 9, orienting lug 10 is fixed on pallet 4 and extension 5, the width of gathering sill 9 is identical with the width of orienting lug 10, length is greater than orienting lug length, its difference is more than or equal to the half of extensometer range, when all secter pats radially slide inner terminal, the external diameter of horizontal sliding disc 3 is identical with the diameter of rock sample, the inner face of secter pat can be formed to contact with the conical surface of frustum interferes.
The present invention installs for the caliberating device that rock circumferential deformation extensometer is demarcated and use procedure is such:
Being fixedly connected with upper end, portion 1 is installed on the crossbeam of calibration device by bolt, and micrometer head push rod is inserted in the counterbore 7 of vertical slide block 2, is then fixed by push rod through the threaded hole on counterbore sidewall with bolt.
Timing signal, as installed extensometer on rock sample, extensometer chain is trapped among the outside of horizontal sliding disc 3, two openends of chain connect the extensometer edge of a knife, rotating micrometer head makes push rod move up, promote vertical slide block 2 to move up, the hexagonal pyramid platform conical surface contacts with the inner face of horizontal sliding disc secter pat interferes, 6 secter pats promoting horizontal sliding disc 3 outwards slide along orienting lug 10 respectively, the upper end of frustum enters into the center pit in the portion of being fixedly connected with, hexagonal pyramid platform often on move 10mm, secter pat radially outward moves 0.5mm, chain expands outwardly with the expansion of horizontal sliding disc 3, extensometer measures the displacement between chain two ends, just the variable quantity of horizontal sliding disc 3 girth can be drawn, and then demarcate.
The vertical slide block of caliberating device that the present invention is used for the demarcation of rock circumferential deformation extensometer is not limited to frustum, and cone is suitable for too.The face number of the frustum of a pyramid is also not limited to 6, and increase the face number of the frustum of a pyramid and the secter pat number of horizontal sliding disc, can improve precision, limiting case also comprises the frustum of a cone.Frustum of a pyramid small end circumscribed circle diameter and frustum of a pyramid aspect ratio are also not limited to 1:10, and the conical inclination increasing the frustum of a pyramid or the frustum of a cone also can improve precision, and the conical inclination reducing the frustum of a pyramid or the frustum of a cone also can realize demarcating, and just precision can decline to some extent.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. the caliberating device demarcated for rock circumferential deformation extensometer, it is characterized in that: comprise the portion of being fixedly connected with (1), vertical slide block (2), horizontal sliding disc (3) and pallet (4), the described upper end being fixedly connected with portion (1) connects calibration device crossbeam, lower end outer wall is provided with extension (5) radially, describedly be fixedly connected with the center pit (6) portion (1) being also provided with and being suitable for vertical slide block (2) and entering, described vertical slide block (2) comprises a frustum, the dead in line of the axis of described frustum and center pit (6), the bottom of described vertical slide block (2) connects calibration device micrometer head push rod, described pallet (4) is positioned at the below of extension (5), the center of pallet (4) is provided with the through hole (8) being suitable for frustum and passing, described horizontal sliding disc (3) is positioned between extension (5) and pallet (4) and is combined into by multiple secter pat, the inner face of each secter pat is inclined-plane, the inclination angle on described inclined-plane is identical with the conical inclination of frustum, each secter pat center radially has gathering sill (9), orienting lug (10) is provided with in described gathering sill (9), described orienting lug (10) is fixed on pallet (4) and extension (5), the width of described gathering sill (9) is identical with the width of orienting lug (10), length is greater than the length of orienting lug, when all secter pats radially slide inner terminal, the external diameter of horizontal sliding disc (3) is identical with the diameter of rock sample, the inner face of secter pat can be formed to contact with the conical surface of frustum interferes.
2. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 1, it is characterized in that: described frustum is the frustum of a pyramid, the secter pat quantity of described horizontal sliding disc is identical with frustum of a pyramid conical surface number.
3. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 2, it is characterized in that: described frustum is hexagonal pyramid platform, the aspect ratio of described hexagonal pyramid platform small end circumscribed circle diameter and hexagonal pyramid platform is 1:10, and described horizontal sliding disc is combined into by 6 secter pats.
4. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 3, is characterized in that: the difference of described gathering sill (9) length and orienting lug (10) length is more than or equal to the half of extensometer range.
5., according to the arbitrary described caliberating device demarcated for rock circumferential deformation extensometer of claim 1-4, it is characterized in that: described gathering sill (9) and orienting lug (10) are Long Circle.
6. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 5, it is characterized in that: described vertical slide block (2) is made up of hexagonal pyramid platform and cylinder connection, the bottom centre of vertical slide block (2) is provided with counterbore (7) and is suitable for the insertion of calibration device micrometer head push rod, and the sidewall of described counterbore (7) also has threaded hole.
7. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 1, is characterized in that: the frustum of described vertical slide block is the frustum of a cone.
8. the caliberating device demarcated for rock circumferential deformation extensometer according to claim 1, is characterized in that: described frustum replaces with cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586353.5A CN103076249B (en) | 2012-12-28 | 2012-12-28 | Calibration device for calibration of rock circumferential deformation extensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586353.5A CN103076249B (en) | 2012-12-28 | 2012-12-28 | Calibration device for calibration of rock circumferential deformation extensometer |
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| Publication Number | Publication Date |
|---|---|
| CN103076249A CN103076249A (en) | 2013-05-01 |
| CN103076249B true CN103076249B (en) | 2015-07-15 |
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| CN201210586353.5A Expired - Fee Related CN103076249B (en) | 2012-12-28 | 2012-12-28 | Calibration device for calibration of rock circumferential deformation extensometer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748112B (en) * | 2017-11-15 | 2023-07-07 | 中国科学院武汉岩土力学研究所 | Device and method for measuring circumferential angle and circumferential displacement |
| CN109406296B (en) * | 2017-12-29 | 2020-12-11 | 哈尔滨工业大学 | Simple device for radially testing low-temperature performance of asphalt mixture |
| CN108847366B (en) * | 2018-07-17 | 2024-02-23 | 国网山东省电力公司招远市供电公司 | Mounting tool for moving contact of circuit breaker |
| CN111442971B (en) * | 2020-05-09 | 2024-07-02 | 华侨大学 | Positioning device and positioning method for axial deformation extensometer |
| CN114674275A (en) * | 2020-12-24 | 2022-06-28 | 北京东方计量测试研究所 | Calibration device and method for high-low temperature extensometer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2627661A (en) * | 1949-08-16 | 1953-02-10 | Aluminum Co Of America | Extensometer calibrating instrument |
| CN201302537Y (en) * | 2008-10-22 | 2009-09-02 | 长春科新试验仪器有限公司 | Designator of high-precision extensometer |
| CN101936859B (en) * | 2010-07-23 | 2012-04-25 | 中国科学院武汉岩土力学研究所 | Calibration device for rock radial deformation sensor |
| CN202994606U (en) * | 2012-12-28 | 2013-06-12 | 中国矿业大学(北京) | Calibration device for calibrating rock circumferential deformation extensometer |
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- 2012-12-28 CN CN201210586353.5A patent/CN103076249B/en not_active Expired - Fee Related
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