CN201348479Y - Standard displacement generator and displacement monitoring device - Google Patents
Standard displacement generator and displacement monitoring device Download PDFInfo
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- CN201348479Y CN201348479Y CNU2008201242934U CN200820124293U CN201348479Y CN 201348479 Y CN201348479 Y CN 201348479Y CN U2008201242934 U CNU2008201242934 U CN U2008201242934U CN 200820124293 U CN200820124293 U CN 200820124293U CN 201348479 Y CN201348479 Y CN 201348479Y
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Abstract
The utility model discloses a standard displacement generator, which comprises a fixed lever, a sliding lever and a rotating cylinder, wherein the fixed lever is fixed with a structure to be measured; the sliding lever is connected with a measuring point; and the fixed lever and the sliding lever are respectively connected with the rotating cylinder through two threads with opposite rotating directions and different thread pitches. The utility model also discloses a displacement monitoring device, which comprises a measuring point which can be connected with the structure to be measured, and also comprises a fixed lever, a sliding lever and a rotating cylinder which are arranged between the measuring point and the structure to be measured. By adopting the standard displacement generator and the displacement monitoring device, the utility model can simulate the displacement of the structure to be measured more truly, can accurately determine the precision and the reliability of the displacement monitoring device, and judge the working performance of the displacement monitoring device.
Description
Technical field
The utility model relates to engineering structure experimental technique field, refers in particular to a kind of normal bit shift generator and displacement monitor.
Background technology
In industry and covil construction field, often need carry out displacement monitoring, and used monitoring method is also varied to various types of engineering structures.Wherein, the building of various towering, longspan structures, for example, nuclear power plant containment shell, road and bridge, large scale industry factory building etc. all belong to important building, and therefore precision and the reliability for displacement monitoring has very high requirement.At present, be generally the stretched-wire method monitoring device at above-mentioned important architectural employed displacement monitor.By using this monitoring device, can be delivered to ground or the easy approaching relatively-stationary position of people to the change in displacement that is positioned at high-altitude or building structure at a distance, then this relatively-stationary position is measured, and by control, thereby obtain satisfied measurement result to this monitoring device.
Figure 1 shows that the structural representation of stretched-wire method monitoring device in the prior art.As shown in Figure 1, in general, typical stretched-wire method monitoring device comprises: measuring point 11, bracing cable 12, fixed pulley 13, displacement meter 14 and weight 15.Wherein, measuring point 11 with fixed by geodesic structure 10, fixed pulley 13 and displacement meter 14 are fixed on the point of fixity 16 by coupling arrangement (for example, support bar) respectively, one end of bracing cable 12 is connected with measuring point 11, and its other end is walked around fixed pulley 13 and passed displacement meter and is connected with weight 15.According to the structure of above-mentioned monitoring device as can be known, when measuring point 11 connected be subjected to displacement on horizontal direction shown in Figure 1 by geodesic structure 10 time, corresponding displacement also will take place in the bracing cable 12 of passing displacement meter 14, thereby can monitor the displacement that is taken place by geodesic structure 10 by displacement meter 14.Because described point of fixity 16 is easily approaching relatively-stationary position of people, therefore, use above-mentioned monitoring device after, a displacement that only needs to pass bracing cable 12 wherein by 14 pairs of displacement meters is monitored, and just can realize described by the displacement monitoring of geodesic structure 10.
In the determining displacement process of Important Project structure, formal use above-mentioned displacement monitor before, generally all need to carry out earlier on-line debugging and systems modelling, thereby confirm the precision and the reliability of this displacement monitor in the laboratory; And before engineering site carries out official test, also need review and validate the serviceability of above-mentioned displacement monitor once more.When carrying out twice above-mentioned inspection or test, generally all adopt the comparison method to check the precision and the reliability of above-mentioned displacement monitor.Described comparison method, promptly for same by geodesic structure, use two cover displacement monitors simultaneously, and judge the precision and the reliability of displacement monitor by the consistance of the measured data of more above-mentioned two kinds of displacement monitors.
Use above-mentioned comparison method, will bring some problems inevitably, for example:
1) employed two cover displacement monitors itself might exist measuring error in the comparison method, therefore two measurement data that obtained are directly compared, the accuracy value in the approximate range can only be obtained, and the measuring accuracy that above-mentioned displacement monitor can reach can't be accurately judged.
When 2) stating the stretched-wire method monitoring device in the use and detect, owing to also comprise this device in the numerical value that displacement meter is exported measuring point displacement is delivered to displacement meter transmission error before, and displacement meter can't be discerned this transmission error, has therefore influenced the measuring accuracy of this displacement monitor.
In summary, displacement monitor of the prior art all can't be determined the precision and the reliability of displacement monitor exactly.
The utility model content
In view of this, the fundamental purpose of the utility model embodiment is to provide a kind of normal bit shift generator and displacement monitor, thereby can determine the precision and the reliability of displacement monitor exactly.
For achieving the above object, the technical scheme among the utility model embodiment is achieved in that
A kind of normal bit shift generator comprises: fixed bar, sliding bar and rotating cylinder;
Described fixed bar with fixed by geodesic structure; Described sliding bar is connected with described measuring point; Opposite and the unequal screw thread of pitch is connected with described rotating cylinder by two kinds of sense of rotation respectively for described fixed bar and described sliding bar.
A kind of displacement monitor, comprise can with the measuring point that is connected by geodesic structure, also comprise at described measuring point and between: fixed bar, sliding bar and rotating cylinder by geodesic structure;
Described fixed bar with fixed by geodesic structure; Described sliding bar is connected with described measuring point; Opposite and the unequal screw thread of pitch is connected with described rotating cylinder by two kinds of sense of rotation respectively for described fixed bar and described sliding bar.
In summary, the utility model provides a kind of normal bit shift generator and displacement monitor.Owing to comprised the normal bit shift generator in the described displacement monitor, therefore can determine the precision and the reliability of this displacement monitor exactly, judge the serviceability of this displacement monitor.
Description of drawings
Figure 1 shows that the structural representation of stretched-wire method monitoring device in the prior art.
Fig. 2 is the structural representation of displacement monitor among the utility model embodiment.
Fig. 3 is the structural representation of standard displacement generator among the utility model embodiment.
Fig. 4 prevents the structural representation of external member in relative rotation among the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is done explanation in further detail.
Fig. 2 is the structural representation of displacement monitor among the utility model embodiment.As shown in Figure 2, the displacement monitor among the utility model embodiment comprises: normal bit shift generator 21, measuring point 11, bracing cable 12, fixed pulley 13, displacement meter 14 and weight 15.Wherein, one end of normal bit shift generator 21 is with fixing (for example by geodesic structure 10, can fix by fixed forms such as welding, bolt or lead screw), the other end of normal bit shift generator 21 then (for example is connected with measuring point 11, normal bit shift generator 21 can be connected with measuring point 11 by the fist screw), or the other end of normal bit shift generator 21 directly is connected with bracing cable 12 by the fist screw, and at this moment, described fist screw can be used as measuring point 11; Fixed pulley 13 and displacement meter 14 are respectively by coupling arrangement (for example, support bar) is fixed on the point of fixity 16, one end of bracing cable 12 is connected with measuring point 11, the other end of bracing cable 12 is walked around fixed pulley 13 and is passed displacement meter 14 and is connected with weight 15, described weight 15 is unsettled under the pulling of bracing cable 12, makes bracing cable 12 be in tensioned state.
Wherein, in embodiment of the present utility model, used the normal bit shift generator.Fig. 3 is the structural representation of standard displacement generator among the utility model embodiment.As shown in Figure 3, described normal bit shift generator 21 comprises: fixed bar 211, sliding bar 212 and rotating cylinder 213.
Wherein, fixed bar 211 with by geodesic structure 10 fixing (for example, can fix) by fixed forms such as welding, bolt or lead screw, and this fixed bar 211 axially is sense of displacement (for example, shown in Figure 2 horizontal direction); Sliding bar 212 is connected (for example, sliding bar 212 can be connected with measuring point 11 by the fist screw) with measuring point 11, and this sliding bar 212 axial is sense of displacement (for example, shown in Figure 2 horizontal direction); Opposite and the unequal screw thread of pitch (being positive and negative button screw thread) is connected with rotating cylinder 213 by two kinds of sense of rotation respectively for fixed bar 211 and sliding bar 212, for example, in embodiment of the present utility model, when fixed bar 211 by its with the outside surface of the link of rotating cylinder 213 on left-hand thread (LHT) and the screw thread on the inwall of rotating cylinder 213 1 ends when being connected with rotating cylinder 213, sliding bar 212 pass through its with the outside surface of the link of rotating cylinder 213 on right-hand thread and the screw thread on the inwall of rotating cylinder 213 other ends be connected with rotating cylinder 213; Perhaps, when fixed bar 211 by its with the outside surface of the link of rotating cylinder 213 on right-hand thread and the screw thread on the inwall of rotating cylinder 213 1 ends be connected with rotating cylinder 213, sliding bar 212 pass through its with the outside surface of the link of rotating cylinder 213 on left-hand thread (LHT) and the screw thread on the inwall of rotating cylinder 213 other ends be connected with rotating cylinder 213.The pitch of the screw thread that above-mentioned two kinds of sense of rotation are opposite (being left-hand thread (LHT) and right-hand thread) is unequal, therefore has pitch difference.In addition, also have one between fixed bar 211 and the sliding bar 212 and prevent external member in relative rotation.For example, this external member can be made of mutual chimeric feather key 214 and chute 215.
Fig. 4 prevents the structural representation of external member in relative rotation among the utility model embodiment, and wherein, Fig. 4 (a) is the right view of fixed bar 211, and Fig. 4 (b) is the left view of sliding bar 212.As shown in Figure 4, fixed bar 211 and sliding bar 212 are the rounded cylindrical structure, also comprise one on the inwall of an end that is connected with rotating cylinder 213 of described fixed bar 211 along the axially extended feather key 214 of this fixed bar, then have one and feather key 214 corresponding chutes 215 on the inwall of sliding bar 212, and described feather key 214 is chimeric mutually with described chute 215, make that sliding bar 212 produces translation with respect to 211 of fixed bars, and can not rotate when twisting rotating cylinder 213.In like manner, also can be also to comprise a feather key 214 on the inwall of the end that is connected with rotating cylinder 213 of sliding bar 212 along this sliding bar extension direction, then have on the inwall of fixed bar 211 one with feather key 214 corresponding chutes 215 (not shown among Fig. 4).In embodiment of the present utility model, the length of described feather key 214 and chute 215 can be according to the range of described normal bit shift generator and is designed in advance.
In addition, in embodiment of the present utility model, described fixed bar 211 can be above-mentioned rounded cylindrical structure, also can be cylindrical-shaped structure; Described sliding bar 212 can be above-mentioned rounded cylindrical structure, also can be cylindrical-shaped structure.
One in described fixed bar 211 and sliding bar 212 is the rounded cylindrical structure, and another is when being cylindrical-shaped structure, for example, when fixed bar 211 was cylindrical-shaped structure for rounded cylindrical structure sliding bar 212, then the position of the feather key 214 (or chute 215) on this fixed bar 211 was on the inwall of the end that is connected with rotating cylinder 213 of this fixed bar 211; And the position of the feather key 214 (or chute 215) on the position of the chute 215 on the sliding bar 212 (or feather key 214) and the fixed bar 211 is corresponding.In like manner, when fixed bar 211 is the rounded cylindrical structure for cylindrical-shaped structure sliding bar 212 situation can the rest may be inferred, do not repeat them here.
In addition, in embodiment of the present utility model, above-mentioned fixed bar 211 and sliding bar 212 can also be cylindrical-shaped structure.At this moment, also comprise one along the axially extended feather key 214 of this fixed bar on described fixed bar 211 and the end that rotating cylinder 213 is connected, then have on the sliding bar 212 and the correspondence position described feather key 214 one with feather key 214 corresponding chutes 215, and described feather key 214 is chimeric mutually with described chute 215; Perhaps, also can be also to comprise a feather key 214 on sliding bar 212 and the end that rotating cylinder 213 is connected along this sliding bar extension direction, then have on the fixed bar 211 and the correspondence position described feather key 214 one with feather key 214 corresponding chutes 215.At this moment, described feather key 214 can be positioned at the optional position (for example, center) on fixed bar 211 (or sliding bar 212) and the end that rotating cylinder 213 is connected.
According to above-mentioned normal bit shift generator as can be known, when rotating cylinder 213 rotated for 1 week, then sliding bar 212 will be with respect to fixed bar 211 mobile 1 pitch difference of bearing of trend (being the axial of rotating cylinder 213) along described fixed bar 211.Therefore, can be (for example at an end of described rotating cylinder 213, one end of one end of close fixed bar 211 or close sliding bar 212) engraves the evenly divided of n lattice on the circumference, spacing between then per two scales is represented the pitch difference of 1/n, for example, if engrave the evenly divided of 100 lattice, the spacing between then per two scales is represented 1/100 pitch difference.In addition, also comprise a scale (not shown among Fig. 3) on the outside surface of sliding bar 212, this scale is used to estimate the rotation number of turns of rotating cylinder 213, therefore the scale spacing of this scale equals the pitch of sliding bar 212 outside surfaces, and this pitch equals the pitch of the screw thread that is used to be connected between sliding bar 212 and the rotating cylinder 213.This scale can be engraved on the outside surface of sliding bar 212, or is fixed on by alternate manner on the outside surface of sliding bar 212.
Therefore, according to the structure of the above-mentioned displacement monitor among the utility model embodiment as can be known, in the time need detecting, above-mentioned displacement monitor can be installed in a certain fixing treating on the geodesic structure to the precision of this displacement monitor and reliability.When detecting, this treats that geodesic structure does not need to produce displacement, and only need be by the rotating cylinder in the normal bit shift generator in the above-mentioned displacement monitor of rotation, can simulate the above-mentioned displacement for the treatment of geodesic structure more truly, and the reading that can be by reading the evenly divided on the rotating cylinder and the reading of the scale on the sliding bar, obtain the exact value of this simulation displacement; Then, the data that the exact value of this simulation displacement and the displacement meter in the above-mentioned displacement monitor is measured compare, thereby can determine the precision and the reliability of this displacement monitor exactly, judge the serviceability of this displacement monitor.Under actual application environment, above-mentioned displacement monitor can be directly installed on and treat on the geodesic structure, thereby can simulate the displacement that this treats geodesic structure more truly; In addition, when rheme is moved monitoring device and is treated geodesic structure and monitor in the use, can use the higher displacement of normal bit shift generator simulation degree of accuracy, therefore, also can be by comparing displacement and the measured displacement of displacement meter that the normal bit shift generator is simulated, thereby can obtain this displacement monitor and will treat that the displacement of geodesic structure is delivered to displacement meter transmission error before, improves the measuring accuracy of this displacement monitor.
In addition, in embodiment of the present utility model, each parts of above-mentioned normal bit shift generator all can select for use the material that the temperature line expansion coefficient is little, sliding is good to make.Preferable, can use the indium steel to make above-mentioned parts; Generally speaking, can use 62 brass or steel to make above-mentioned parts; And, therefore generally do not use aluminium to make above-mentioned parts because the expansion coefficient of aluminium is bigger.
In embodiment of the present utility model, described fixed bar 211, sliding bar 212, rotating cylinder 213 and feather key 214 all can be selected 62 brass manufacturings for use, rotating cylinder 213 outside surfaces adopt straight knurling, and the range of described normal bit shift generator 21 all can be according to the needs of practical application and design in advance.For example, this normal bit shift generator 21 can have two kinds of specifications as shown in the table:
Table 1
Hence one can see that, and in practical situations, above-mentioned pitch difference and range all can design according to actual conditions, thereby can satisfy actual needs better, more neatly.
In addition, in embodiment of the present utility model, the screw thread that two kinds of above-mentioned sense of rotation are opposite all can use the manufacturing of accurate thread process technology, and use after the process measurement verification, therefore can make formed screw thread have higher precision, thereby can improve the precision and the reliability of above-mentioned displacement monitor greatly.
In summary, a kind of normal bit shift generator and displacement monitor in embodiment of the present utility model, are provided.Owing to used a kind of normal bit shift generator in this displacement monitor, therefore can simulate the displacement for the treatment of geodesic structure more truly, and obtain the exact value of this simulation displacement, the measured data of exact value that then can be by will simulating displacement and the displacement meter in the above-mentioned displacement monitor compare, thereby determine the precision and the reliability of this displacement monitor exactly, judge the serviceability of this displacement monitor, realize comprehensive inspection and affirmation measuring system.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1, a kind of normal bit shift generator is characterized in that, institute's rheme normal bit shift generator comprises: fixed bar, sliding bar and rotating cylinder;
Described fixed bar with fixed by geodesic structure; Described sliding bar is connected with described measuring point; Opposite and the unequal screw thread of pitch is connected with described rotating cylinder by two kinds of sense of rotation respectively for described fixed bar and described sliding bar.
2, normal bit shift generator according to claim 1 is characterized in that:
Have one between described fixed bar and the described sliding bar and prevent external member in relative rotation.
3, normal bit shift generator according to claim 2 is characterized in that, has one between described fixed bar and the described sliding bar and prevents in relative rotation that external member comprises:
An end that is connected with described rotating cylinder of described fixed bar has a feather key along this fixed bar bearing of trend, described sliding bar is the rounded cylindrical structure, and have on the inwall of described sliding bar one with the corresponding chute of described feather key, described feather key and described chute are chimeric mutually.
4, normal bit shift generator according to claim 2 is characterized in that, has one between described fixed bar and the described sliding bar and prevents in relative rotation that external member comprises:
Has a feather key along this sliding bar bearing of trend on the inwall of an end that is connected with described rotating cylinder of described sliding bar, described fixed bar is the rounded cylindrical structure, and have on the inwall of described fixed bar one with the corresponding chute of described feather key, described feather key and described chute are chimeric mutually.
5, according to each described normal bit shift generator in claim 1 or 2, it is characterized in that:
Described fixed bar is rounded cylindrical structure or cylindrical-shaped structure; Described sliding bar is rounded cylindrical structure or cylindrical-shaped structure.
6, normal bit shift generator according to claim 1 is characterized in that, the opposite and unequal screw thread of pitch is connected with described rotating cylinder and comprises by two kinds of sense of rotation respectively for described fixed bar and described sliding bar:
Described fixed bar by its with the outside surface of the link of described rotating cylinder on left-hand thread (LHT) and the screw thread on the inwall of described rotating cylinder one end be connected with described rotating cylinder; Described sliding bar by its with the outside surface of the link of described rotating cylinder on right-hand thread and the screw thread on the inwall of the described rotating cylinder other end be connected with described rotating cylinder; The pitch of described left-hand thread (LHT) and right-hand thread is unequal;
Perhaps, described fixed bar by its with the outside surface of the link of described rotating cylinder on right-hand thread and the screw thread on the inwall of described rotating cylinder one end be connected with described rotating cylinder, described sliding bar pass through its with the outside surface of the link of described rotating cylinder on left-hand thread (LHT) and the screw thread on the inwall of the described rotating cylinder other end be connected with described rotating cylinder; The pitch of described left-hand thread (LHT) and right-hand thread is unequal.
7, normal bit shift generator according to claim 1 is characterized in that:
Be carved with evenly divided on the circumference of one end of described rotating cylinder; The scale that also comprises the rotation number of turns that is used to estimate described rotating cylinder on the outside surface of described sliding bar.
8, normal bit shift generator according to claim 1 is characterized in that:
Described normal bit shift generator selects for use indium steel or 62 brass to make.
9, a kind of displacement monitor, comprise can with the measuring point that is connected by geodesic structure, it is characterized in that, also comprise at described measuring point and between: fixed bar, sliding bar and rotating cylinder by geodesic structure;
Described fixed bar with fixed by geodesic structure; Described sliding bar is connected with described measuring point; Opposite and the unequal screw thread of pitch is connected with described rotating cylinder by two kinds of sense of rotation respectively for described fixed bar and described sliding bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201242934U CN201348479Y (en) | 2008-12-11 | 2008-12-11 | Standard displacement generator and displacement monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201242934U CN201348479Y (en) | 2008-12-11 | 2008-12-11 | Standard displacement generator and displacement monitoring device |
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| CN201348479Y true CN201348479Y (en) | 2009-11-18 |
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| CNU2008201242934U Expired - Fee Related CN201348479Y (en) | 2008-12-11 | 2008-12-11 | Standard displacement generator and displacement monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796998A (en) * | 2012-07-31 | 2012-11-28 | 桂林电子科技大学 | Method for operating and controlling position of nano-grating deposition substrate in vacuum vessel and device therefor |
| CN105066832A (en) * | 2015-07-17 | 2015-11-18 | 河海大学 | Screw type axle load experiment displacement meter |
| CN105547217A (en) * | 2015-12-22 | 2016-05-04 | 中冶建筑研究总院有限公司 | Displacement generator |
| CN106643634A (en) * | 2016-12-28 | 2017-05-10 | 湖南科技大学 | Device for measuring water area-crossing bridge deflection and measurement method thereof |
-
2008
- 2008-12-11 CN CNU2008201242934U patent/CN201348479Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796998A (en) * | 2012-07-31 | 2012-11-28 | 桂林电子科技大学 | Method for operating and controlling position of nano-grating deposition substrate in vacuum vessel and device therefor |
| CN102796998B (en) * | 2012-07-31 | 2013-11-27 | 桂林电子科技大学 | Method for operating and controlling position of nano-grating deposition substrate in vacuum vessel and device therefor |
| CN105066832A (en) * | 2015-07-17 | 2015-11-18 | 河海大学 | Screw type axle load experiment displacement meter |
| CN105066832B (en) * | 2015-07-17 | 2018-02-06 | 河海大学 | Spiral axle pressure test displacement meter |
| CN105547217A (en) * | 2015-12-22 | 2016-05-04 | 中冶建筑研究总院有限公司 | Displacement generator |
| CN105547217B (en) * | 2015-12-22 | 2019-01-22 | 中冶建筑研究总院有限公司 | A kind of displacement generator |
| CN106643634A (en) * | 2016-12-28 | 2017-05-10 | 湖南科技大学 | Device for measuring water area-crossing bridge deflection and measurement method thereof |
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Granted publication date: 20091118 Termination date: 20121211 |