CN102095400A - Surface strain gauge with prolonged service life and improved measuring precision - Google Patents
Surface strain gauge with prolonged service life and improved measuring precision Download PDFInfo
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- CN102095400A CN102095400A CN2009102167272A CN200910216727A CN102095400A CN 102095400 A CN102095400 A CN 102095400A CN 2009102167272 A CN2009102167272 A CN 2009102167272A CN 200910216727 A CN200910216727 A CN 200910216727A CN 102095400 A CN102095400 A CN 102095400A
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- sliding screw
- strain
- seat body
- seal
- hole
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Abstract
The invention discloses a surface strain gauge with prolonged service life and improved measuring precision. In the surface strain gauge, a sealing groove is arranged at the connected part of a sliding screw and a strain seat body; an elastic cushion and a sealing member are arranged in the sealing groove from inside to outside; the sealing member is axially provided with a sealing hole through which the sliding screw passes; an axially-arranged positioning groove is arranged on the surface of the sliding screw; the strain seat body is provided with a positioning hole corresponding to the positioning groove in the position; and a positioning pin penetrates through the positioning hole and extends into the positioning groove. According to the surface strain gauge, the connected part of the sliding screw and the strain seat body is sealed by rubber, so that the inside of the surface train gauge is prevented from being oxidized and corroded, the service life is prolonged and the measuring precision is improved; the positioning groove and the positioning hole are respectively arranged on the surface of the sliding screw and the strain gauge seat body; the positioning pin penetrates through the positioning hole and extends into the positioning groove so as to prevent the sliding screw from rotating around an axle wire; and the vibrating string scrape due to rotation of the sliding screw is avoided.
Description
Technical field
The present invention relates to a kind of strainometer, specifically be meant a kind of surface strain meter that improves serviceable life and measuring accuracy.
Background technology
The surface strain meter usually is applied in the engineering construction, by the surface strain meter being fixed on the surface of buildings, can record the microdeformation of buildings, thereby plays the real-time monitoring to buildings.But, the present following shortcoming of surface strain meter ubiquity: 1, all there is certain slit in the junction of the screw mandrel of sliding end and strain seat body, moisture enters into the inside of strainometer easily by the slit in long-term use, cause the inner oxidized and corrosion of strainometer, influenced the serviceable life and the measuring accuracy of strainometer; 2, the screw mandrel owing to sliding end can rotate around the axis, thereby can cause the vibratory string torsional deformation of screw mandrel inside to be scrapped in the process of rotation.
Summary of the invention
Purpose of the present invention is in order to overcome the deficiencies in the prior art and defective, a kind of surface strain meter that improves serviceable life and measuring accuracy is provided, this surface strain meter is by carrying out rubber seal with the junction of sliding screw and strain seat body, prevent the oxidized and corrosion in long-term use of surface strain meter inside, improved the serviceable life and the measuring accuracy of strainometer; And have corresponding locating slot in position and pilot hole on the surface of sliding screw and strain seat body, pass pilot hole by register pin and extend into and prevent in the locating slot that sliding screw from rotating around the axis, the vibratory string of having avoided its rotation to cause is scrapped.
Purpose of the present invention is achieved through the following technical solutions: a kind of surface strain meter that improves serviceable life and measuring accuracy, described strain seat mainly is made of strain seat body and the fixed body that is arranged on strain seat body two ends, fixed body passes through fixedly respectively, and screw mandrel links to each other with the strain seat body with sliding screw, the junction of described sliding screw and strain seat body is provided with seal groove, seal groove is equipped with cushion and seal from inside to outside, all is axially arranged with on cushion and the seal to be used for the seal bore that sliding screw passes.
Described seal and seal groove are for being threaded.
Described strain seat body, fixed body, fixedly screw mandrel and sliding screw are equipped with and are used for the through hole that vibratory string passes, and the axis of described through hole is positioned at same straight line.
The surface of described sliding screw has the locating slot of axial setting, has position and locating slot corresponding positioning hole on the strain seat body, and register pin passes pilot hole and extends in the locating slot.
The aperture of described seal bore is greater than the external diameter of sliding screw, and all is processed with screw thread on seal bore hole wall and the sliding screw.
Described cushion is that elastic caoutchouc is made.
The aperture of above-mentioned seal bore is slightly larger than the external diameter of sliding screw, only need exist the slit to get final product.
In sum, the present invention compared with prior art has following advantage:
(1) the present invention has prevented the oxidized and corrosion in long-term use of surface strain meter inside by rubber seal is carried out in the junction of sliding screw and strain seat body, has improved the serviceable life and the measuring accuracy of strainometer;
(2) the present invention has corresponding locating slot in position and pilot hole on the surface of sliding screw and strain seat body, pass pilot hole by register pin and extend into and prevent in the locating slot that sliding screw from rotating around the axis, the vibratory string of having avoided its rotation to cause is scrapped.
Description of drawings
Fig. 1 is a cut-open view of the present invention.
Mark and corresponding parts title in the accompanying drawing: 1-strain seat body; The 2-fixed body; 3-is screw mandrel fixedly; The 4-sliding screw; The 5-seal groove; The 6-cushion; The 7-seal; The 8-seal bore; The 9-through hole; The 10-locating slot; The 11-pilot hole; The 12-register pin; The 13-vibratory string.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Embodiment:
The surface strain meter that as shown in Figure 1 a kind of improves serviceable life and measuring accuracy as can be known, this surface strain meter comprises the strain seat, described strain seat mainly is made of strain seat body 1 and the fixed body 2 that is arranged on strain seat body 1 two ends, fixed body 2 passes through fixedly respectively, and screw mandrel 3 links to each other with strain seat body 1 with sliding screw 4, described sliding screw 4 is provided with seal groove 5 with the junction of strain seat body 1, seal groove 5 is equipped with cushion 6 and seal 7 from inside to outside, all is axially arranged with on cushion 6 and the seal 7 to be used for the seal bore 8 that sliding screw 4 passes.
Described seal 7 and seal groove 5 are for being threaded; Strain seat body 1, fixed body 2, fixedly screw mandrel 3 and sliding screw 4 are equipped with and are used for the through hole 9 that vibratory string 13 passes, and the axis of described through hole 9 is positioned at same straight line; The surface of sliding screw 4 has the locating slot 10 of axial setting, has position and locating slot 10 corresponding positioning hole 11 on strain seat body 1, and register pin 12 passes pilot hole 11 and extends in the locating slot 10; The aperture of seal bore 8 is greater than the external diameter of sliding screw 4, and all is processed with screw thread on seal bore 8 hole walls and the sliding screw 4; Cushion 6 is made for elastic caoutchouc.
Because seal 7 and seal groove 5 are for being threaded, when inside rotary seal body 7, seal 7 its inboard cushions 6 of extruding, because cushion 6 is made for elastic caoutchouc, elastic caoutchouc can enter into the thread gaps place between seal bore 8 and the sliding screw 4 in the process that is extruded, thereby it is sealed, prevent that the inside that moisture enters the surface strain meter from causing its oxidized and corrosion, the serviceable life of having improved strainometer; And elastic caoutchouc has certain elasticity, thus can not influence the slip of sliding screw 4 in strain seat body 1, thus can guarantee the good seal of strainometer, can guarantee the precision of measuring again.
Owing on the surface of sliding screw 4 and strain seat body 1, have corresponding locating slot 10 in position and pilot hole 11, passing pilot hole 11 by register pin 12 extends into and prevents in the locating slot 10 that sliding screw 4 from rotating around the axis, avoided its rotation to cause vibratory string 13 to scrap.
As mentioned above, just can realize the present invention preferably.
Claims (6)
1. surface strain meter that improves serviceable life and measuring accuracy, comprise the strain seat, described strain seat is mainly by strain seat body (1), and the fixed body (2) that is arranged on strain seat body (1) two ends constitutes, fixed body (2) passes through fixedly respectively, and screw mandrel (3) links to each other with strain seat body (1) with sliding screw (4), it is characterized in that, described sliding screw (4) is provided with seal groove (5) with the junction of strain seat body (1), seal groove (5) is equipped with cushion (6) and seal (7) from inside to outside, all is axially arranged with on cushion (6) and the seal (7) to be used for the seal bore (8) that sliding screw (4) passes.
2. a kind of surface strain meter that improves serviceable life and measuring accuracy according to claim 1 is characterized in that, described seal (7) and seal groove (5) are for being threaded.
3. a kind of surface strain meter that improves serviceable life and measuring accuracy according to claim 1, it is characterized in that, described strain seat body (1), fixed body (2), fixedly screw mandrel (3) and sliding screw (4) are equipped with and are used for the through hole (9) that vibratory string (13) passes, and the axis of described through hole (9) is positioned at same straight line.
4. a kind of surface strain meter that improves serviceable life and measuring accuracy according to claim 1, it is characterized in that, the surface of described sliding screw (4) has the locating slot (10) of axial setting, have position and locating slot (10) corresponding positioning hole (11) on strain seat body (1), register pin (12) passes pilot hole (11) and extends in the locating slot (10).
5. a kind of surface strain meter that improves serviceable life and measuring accuracy according to claim 1, it is characterized in that, the aperture of described seal bore (8) is greater than the external diameter of sliding screw (4), and all is processed with screw thread on seal bore (8) hole wall and the sliding screw (4).
6. a kind of surface strain meter that improves serviceable life and measuring accuracy according to claim 1 is characterized in that described cushion (6) is made for elastic caoutchouc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102167272A CN102095400A (en) | 2009-12-14 | 2009-12-14 | Surface strain gauge with prolonged service life and improved measuring precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102167272A CN102095400A (en) | 2009-12-14 | 2009-12-14 | Surface strain gauge with prolonged service life and improved measuring precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102095400A true CN102095400A (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102167272A Pending CN102095400A (en) | 2009-12-14 | 2009-12-14 | Surface strain gauge with prolonged service life and improved measuring precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102095400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507508A (en) * | 2018-06-15 | 2018-09-07 | 佛山科学技术学院 | A kind of strain gauge of limitation torsion angle |
| CN111076685A (en) * | 2019-12-26 | 2020-04-28 | 南京南瑞水利水电科技有限公司 | Vibrating wire type flexible displacement measuring device |
-
2009
- 2009-12-14 CN CN2009102167272A patent/CN102095400A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507508A (en) * | 2018-06-15 | 2018-09-07 | 佛山科学技术学院 | A kind of strain gauge of limitation torsion angle |
| CN111076685A (en) * | 2019-12-26 | 2020-04-28 | 南京南瑞水利水电科技有限公司 | Vibrating wire type flexible displacement measuring device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |