CN202994104U - Laser roundness measuring device - Google Patents
Laser roundness measuring device Download PDFInfo
- Publication number
- CN202994104U CN202994104U CN 201220722381 CN201220722381U CN202994104U CN 202994104 U CN202994104 U CN 202994104U CN 201220722381 CN201220722381 CN 201220722381 CN 201220722381 U CN201220722381 U CN 201220722381U CN 202994104 U CN202994104 U CN 202994104U
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- range finder
- laser
- laser range
- stepping motor
- roundness
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Abstract
The utility model belongs to the technical field of shield detection, and particularly relates to a laser roundness measuring device used for measuring the roundness of a shield cover. The laser roundness measuring device comprises a supporting rod, a stepping motor fixed on the supporting rod, and a laser range finder fixed on a rotating shaft of the stepping motor, wherein two ends of the supporting rod are supported on the inner wall of the shield cover, and the stepping motor and the laser range finder are both located at a vertical bisector of the supporting rod, that is, the stepping motor and the laser range finder are located at the direction of an axle line of the shield cover. The coordinates of points on the inner wall of the shield cover are measured every other certain angle by taking the laser range finder as a center of rotation, and the roundness of the shield cover is measured and calculated through a computing method which is specially worked out. The laser roundness measuring device provided by the utility model has the advantages that installation of the device is simple, the manufacturing cost is low, the angle is controlled conveniently and accurately in measurement, variations of the roundness of the shield cover in the axial direction can be measured at the same time, various data of the roundness of the shield cover can be converted automatically through a computer processor, and the precision is high.
Description
Technical field
The utility model belongs to shield structure detection technique field, is specifically related to a kind of Laser Measuring round belting for measuring shield shell circularity.
Background technology
The basic functional principle of shield machine is exactly that a cylindrical steel assembly excavates soil while pushing ahead along the tunnel axis.The housing of this right cylinder steel assembly is the shield shell, and it plays temporary supporting to the also unlined Tunnel Section of excavating, and bears the pressure of soil layer on every side, and segment assembly forms permanent lining, secondary lining under the protection of shield shell.The circularity quality of shield shell when assembly unit will directly have influence in the future the pipe sheet assembling quality and tunneling process in control and the tuning of shield attitude, therefore make in the shield body plan, survey crew should in time obtain shield shell circularity parameter between installation period, and in time eliminate during this period error and seem particularly important.
in the prior art, adopt high-precision professional profiler testing and resolve software data processing with its supporting professional section, but this kind instrument cost is too high in view of purchasing, general data will not be purchased and be to be equipped with the common total powerstation that possesses general utility functions, and general section resolves its function of software and also has certain limitation, only could evaluate shield shell section when knowing the design home position, and for shield shell roundness measurement, this designs the center of circle is non-existent, so such section software also seems awkward when implementing shield shell roundness measurement, therefore how coming to carry out more accurately shield shell roundness measurement has just become a stubborn problem.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of Laser Measuring round belting is provided, this device is by adopting stepping motor revolution driving laser stadimeter along circumferentially measuring shield shell inwall, obtains the measurement data of different angles and by calculating the accurate circularity of shield shell.
The utility model purpose realizes being completed by following technical scheme:
A kind of Laser Measuring round belting, the concrete measurement shield shell circularity that is used for, it is characterized in that described survey round belting comprises support bar, stepping motor and laser range finder, described stepping motor is fixed on support bar, described laser range finder is fixedly connected with rotating shaft on described stepping motor, and wherein said laser range finder is positioned on the perpendicular bisector of described support bar.
The fixed sturcture of described laser range finder and described stepping motor rotating shaft is: be arranged with a saddle in described stepping motor rotating shaft, described laser range finder is fixed on described saddle, also is provided with the computer processor that is connected with described laser range finder on described saddle.
Described laser range finder inside is provided with retractor device, and the flexible direction of described retractor device is along shield shell direction of axis line.
The utility model has the advantages that, Laser Measuring round belting equipment is installed simple, and cost is low, during measurement, angle control is convenient, accurate, can measure simultaneously shield shell circularity in the axial direction and change, can automatically converse every data of shield shell circularity by computer processor, precision is higher.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is fundamental diagram of the present utility model;
Fig. 3 is installation requirement figure of the present utility model.
Embodiment
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As Fig. 1-3, in figure, mark 1-8 is respectively: saddle 1, laser range finder 2, laser 3, stepping motor 4, support bar 5, mounting bracket 6, rotating shaft 7, shield shell 8.
Embodiment: as shown in Figure 1, the present embodiment is specifically related to a kind of Laser Measuring round belting, is applicable to the DATA REASONING of the plane geometric shapes such as subway, tunnel, the method measurement shield shell circularity that this device combines by utilizing machinery, laser range finder and computing machine.the Laser Measuring round belting is specifically by support bar 5, mounting bracket 6, stepping motor 4, saddle 1 and laser range finder 2 form, be provided with slide rail vertically on the internal face of shield shell 8, support bar 5 is flexibly connected with the slide rail on the internal face that is arranged at shield shell 8, the central axes of the perpendicular bisector of support bar 5 and shield shell 8, and erecting frame 6, stepping motor 4, 2 central axis along shield shell 8 of saddle 1 and laser range finder axially arrange (namely being arranged on the perpendicular bisector of support bar 5), wherein mounting bracket 6 is bolted with support bar 5, mounting bracket 6 is connected by flange with stepping motor 4, mounting bracket 6 possesses regulatory function, be used for adjusting the measurement mechanism attitude before measurement, be set with saddle 1 in the rotating shaft 7 of stepping motor 4, both adopt key to connect, this saddle 1 is in order to arrange laser range finder 2, laser range finder 2 measuring accuracy are in ± 1mm, possesses wireless transmission function, simultaneously between laser range finder 2 and saddle 1, retractor device is set, is moving axially in order to driving laser stadimeter 2, the position of the light source before measurement fine-tuning laser range finder 2 on shield shell 8 axial.
As Figure 1-3, be below the application process of Laser Measuring round belting, concrete steps are as follows:
(1) at the interior installation Laser Measuring of shield shell 8 round belting, the two ends of support bar 8 respectively with vertical connection of inwall of shield shell 8, utilize the device contexts such as level meter, vertical collimator to adjust by mounting bracket 6, the laser 3 of laser range finder 2 emissions and the angle of its plane of rotation are controlled in 1 °, to guarantee the verticality of laser range finder 2 and shield shell 8 interior axis;
(2) debugging laser range finder 2 and computer processor, guarantee that both all are in normal operating conditions.
(3) take the centre of gyration of laser range finder 2 as the center of circle, set up plane coordinate system in computer processor, the centre of gyration is the center of circle (0,0);
(4) by laser range finder 2, laser 3 is incident upon shield shell 8 inwalls, take the first bundle laser as benchmark (being defaulted as 0 ° of direction of coordinate system), measures measured distance d1 and the deflection angle θ 1 of laser range finder 2; Afterwards every one group of data of 7.5 ° of wheel measurings, 48 groups of data are measured to get in 360 ° of laser range finder 2 revolutions altogether, record successively measured distance d1, d2 ... di and deflection angle 1, θ 2 ... θ i;
(5) by computer processor process survey data after, draw on these place's shield shell 8 inwalls the coordinate figure (ai, bi) of every;
(6) choose 3 points wantonly among the each point coordinate figure data that draw, draw the central coordinate of circle of the circle of 3 formation by computer processor, calculate
The coordinate figure of group data;
(7) exist
Reject 10% data of 10% and minimum of transverse axis Ox maximum in the group data, reject equally 10% and 10% minimum data of vertical pivot Oy maximum, with the Ox of residue 60% data, the Oy value is averaged respectively, as being somebody's turn to do the calculating central coordinate of circle (Ox at place in shield shell 8
a, Oy
a);
(8) with the calculating central coordinate of circle (Ox at this place
a, Oy
a) be benchmark, calculate the so far distance R i in the center of circle of 48 measurement points, its variance yields is shield shell 8 circularity fluctuation sizes, separately draws Rmax and Rmin.
(9) for ease of grasping the axially upper circularity data of shield shell 8, with shield shell 8 axially as the z axle, carry out in the axial direction short-distance movement by the retractor device driving laser stadimeter 2 that is arranged between saddle 1 and laser range finder 2, simultaneously can carry out long-distance axial on slide rail and move, and measure the circularity size at the place of different coordinates on the z axle according to the described method in above-mentioned (3)-(8).
The distance problem of centre of gyration point and laser emission point: the measuring distance of laser range finder 2 is that laser emission point is to the distance between object, actual range is that centre of gyration point is to the distance of object, the distance of this point-to-point transmission can be by solving support and laser range finder as a single piece, just the distance between these 2 is confirmed when plant produced is installed, this value adds on measured distance when concrete the measurement.
When the object reflecting surface is cambered surface, should be as far as possible with the laser ranging system location near to the actual center of circle, guarantee like this substantially vertical to target face of laser.
Claims (3)
1. Laser Measuring round belting, the concrete measurement shield shell circularity that is used for, it is characterized in that described survey round belting comprises support bar, stepping motor and laser range finder, described stepping motor is fixed on support bar, described laser range finder is fixedly connected with rotating shaft on described stepping motor, and wherein said laser range finder is positioned on the perpendicular bisector of described support bar.
2. a kind of Laser Measuring round belting according to claim 1, the fixed sturcture that it is characterized in that described laser range finder and described stepping motor rotating shaft is: be arranged with a saddle in described stepping motor rotating shaft, described laser range finder is fixed on described saddle, also is provided with the computer processor that is connected with described laser range finder on described saddle.
3. a kind of Laser Measuring round belting according to claim 1 is characterized in that described laser range finder inside is provided with retractor device, and the flexible direction of described retractor device is along shield shell direction of axis line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722381 CN202994104U (en) | 2012-12-25 | 2012-12-25 | Laser roundness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722381 CN202994104U (en) | 2012-12-25 | 2012-12-25 | Laser roundness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202994104U true CN202994104U (en) | 2013-06-12 |
Family
ID=48565277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220722381 Expired - Fee Related CN202994104U (en) | 2012-12-25 | 2012-12-25 | Laser roundness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202994104U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706670A (en) * | 2013-12-12 | 2014-04-09 | 中铁十四局集团有限公司 | Shield tail arc degree on-site correcting device of extra-large-diameter shield tunneling machine |
| CN106168468A (en) * | 2016-08-31 | 2016-11-30 | 徐工集团工程机械有限公司 | Hole detecting system and method |
| CN107084675A (en) * | 2017-05-12 | 2017-08-22 | 北京航空航天大学 | A kind of on-line automatic measurement apparatus of spiral welded pipe caliber and method |
| CN111504224A (en) * | 2020-04-30 | 2020-08-07 | 中铁工程装备集团有限公司 | Pipe sheet roundness detection device and detection method |
-
2012
- 2012-12-25 CN CN 201220722381 patent/CN202994104U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706670A (en) * | 2013-12-12 | 2014-04-09 | 中铁十四局集团有限公司 | Shield tail arc degree on-site correcting device of extra-large-diameter shield tunneling machine |
| CN106168468A (en) * | 2016-08-31 | 2016-11-30 | 徐工集团工程机械有限公司 | Hole detecting system and method |
| CN107084675A (en) * | 2017-05-12 | 2017-08-22 | 北京航空航天大学 | A kind of on-line automatic measurement apparatus of spiral welded pipe caliber and method |
| CN111504224A (en) * | 2020-04-30 | 2020-08-07 | 中铁工程装备集团有限公司 | Pipe sheet roundness detection device and detection method |
| CN111504224B (en) * | 2020-04-30 | 2022-03-22 | 中铁工程装备集团有限公司 | Pipe sheet roundness detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181225 |