CN201993103U - Automatic level meter - Google Patents
Automatic level meter Download PDFInfo
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- CN201993103U CN201993103U CN 201120042947 CN201120042947U CN201993103U CN 201993103 U CN201993103 U CN 201993103U CN 201120042947 CN201120042947 CN 201120042947 CN 201120042947 U CN201120042947 U CN 201120042947U CN 201993103 U CN201993103 U CN 201993103U
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- grating
- automatic level
- measurement mechanism
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Abstract
Provided is an automatic level meter. A plurality of metering devices are connected with connectors through pipelines, and the connectors are connected with a liquid feeding device. The metering devices are transmission-type grating metering devices or reflection-type grating metering devices. The automatic level meter and a level adjustment method replace a line measuring method in the prior art with a multi-point measuring method, flexible pipes are used to connect each measuring point, a requirement for plane accuracy of the measuring point is not high, thereby effectively solving a problem in the prior art that a large workpiece or an abnormal-shaped workpiece is difficult in measuring levelness when the large workpiece or the abnormal-shaped workpiece is lifted. A holding device is arranged reasonably, so that a workpiece can be lifted in various postures. The automatic level meter combines connecting pipelines and a grating sensor and is matched with the liquid feeding device, thereby achieving an automatic control of workpiece leveling, providing a powerful technical support of a processing model of integral hoisting after ground assembling of the large workpiece, accordingly improving construction speed and construction accuracy of the whole construction.
Description
Technical field
The utility model relates to a kind of instrument of auxiliary adjustment level, particularly a kind of accurately a kind of automatic level of lifting of large-scale or special-shaped workpiece that is used for.
Background technology
Existing large-scale workpiece lifting adopts the artificial water detection of bubble and scale flat, perhaps adopt obliquity sensor, but obliquity sensor need be processed a plurality of high-precision measuring basis faces, and obliquity sensor is to the too responsive measuring accuracy that influences of vibration, common measuring accuracy can only reach ± and 0.25 °, on large-scale workpiece, for example length reaches on 5 meters the workpiece, and ± 0.25 ° angular error just reaches ± difference in height of 21.8mm; And it is higher to process the high-precision measuring basis face difficulty that is used for the placement angle sensor for special-shaped workpiece, adopts the artificial leveling of bubble and scale also to have same problem.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of automatic level, can make things convenient for the automatic leveling of or special-shaped workpiece large-scale with high-precision realization.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of automatic level, and a plurality of measurement mechanisms are connected with feedthrough by pipeline, and feedthrough is connected with liquid feed device.
Described measurement mechanism is transmission-type grating measurement mechanism or reflective gratings measurement mechanism.
In the described transmission-type grating measurement mechanism, float is installed in the housing, and float is provided with the scale grating, is provided with indication grating at the housing opposite position, and the light read element is installed in the indication grating opposite position.
In the described smooth read element, light source and lens are arranged on indication grating one side, and photoelectric conversion module is arranged in the transparent confined space of scale grating one side in the housing.
In the described reflective gratings measurement mechanism, float is installed in the housing, and float is provided with the scale grating, is provided with indication grating at the housing opposite position, and the light read element is installed in the indication grating outside.
In the described smooth read element, light source, polylith lens, catoptron and photoelectric conversion module all are positioned at the outer and indication grating opposite position of housing.
In the described liquid feed device, motor is connected with hydraulic pump, and the hydraulic pressure delivery side of pump is provided with retaining valve, and retaining valve and hydraulic pump also are parallel with an oil return loop, and the oil return loop is provided with solenoid valve.
The hydraulic pressure delivery side of pump also is in series with flow valve.
A kind of method of utilizing above-mentioned automatic level to carry out leveling may further comprise the steps:
1) make the reference field of each measurement mechanism and design basis face neat by clamping device;
2) be connected each measurement mechanism and liquid feed device with feedthrough by pipeline;
3) start liquid feed device and give the pipeline feed flow, the elevation of the float at least one measurement mechanism is crossed zero-bit and is begun to measure, and when the range of setting is crossed in the position of this float, stops liquid feed device;
4) reduce the elevation of workpiece and other measurement mechanism opposite positions, be positioned at identical position or reach the margin tolerance of designing requirement to each measurement mechanism;
5) as the float counterpoise new low point in the measurement mechanisms all in the leveling process in zero-bit, then start liquid feed device and continue feed flow, and return step 3);
Realize the automatic leveling of workpiece by above-mentioned steps.
Step 1) is to realize apart from elevation of benchmark of workpiece calibration point by the reference field that makes measurement mechanism.
A kind of automatic level that the utility model provides, mode by multimetering has substituted line metering system of the prior art, owing to be to adopt flexible conduit to connect between each measurement point, plane precision for measurement point is less demanding, effectively solved a difficult problem of measuring levelness in medium-and-large-sized workpiece of prior art or the special-shaped work piece hoisting, and the reasonable setting by clamping device can make workpiece lift with various attitudes almost.The utility model adopts the combination of communicating pipe and grating sensor, and cooperate liquid feed device to realize the automatic control of Workpiece leveling, the cooked mode of assembling the back integral hoisting for large-scale workpiece ground provides strong technical support, thereby has improved the speed of application and the construction precision of engineering integral body.The grating sensor volume that adopts in the measurement mechanism is little, precision is high, low price, precision can reach μ m level usually, and in common engineering is used, only need reach ± precision of 0.1mm gets final product, the measuring accuracy that reduces can reduce the technological requirement of measurement mechanism greatly, thereby reduces the production cost of measurement mechanism.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the lifting synoptic diagram of special-shaped workpiece in the utility model.
Fig. 2 is the lifting synoptic diagram of the medium-and-large-sized workpiece of the utility model.
Fig. 3 is the structural representation of transmission-type grating measurement mechanism in the utility model.
Fig. 4 is the structural representation of reflective gratings measurement mechanism in the utility model.
Fig. 5 is the structural representation of liquid feed device in the utility model.
Fig. 6 is the principle schematic of transmission-type grating measurement mechanism in the utility model.
Fig. 7 is the principle schematic of reflective gratings measurement mechanism in the utility model.
Embodiment
Embodiment 1:
In Fig. 1, Fig. 2 and Fig. 3, a kind of automatic level, a plurality of measurement mechanisms 5 are connected with feedthrough 7 by pipeline 6, and feedthrough 7 is connected with liquid feed device 8.Described measurement mechanism 5 is the transmission-type grating measurement mechanism.
In the described transmission-type grating measurement mechanism, float 55 is installed in the housing 52, and float 55 is provided with scale grating 54, is provided with indication grating 53 at housing 52 opposite positions, and light read element 51 is installed in indication grating 53 opposite positions.In the described smooth read element 51, light source 511 and lens 512 are arranged on indication grating 53 1 sides, and photoelectric conversion module 513 is arranged in the transparent confined space of scale grating 54 1 sides in the housing 52.
Be made as reference field 3 for ease of common upper surface with housing 52 is installed, the upper end of housing 52 communicates with air, and for avoiding the influence of wind-engaging, the opening that communicates with air is set to the shape in labyrinth.
In Fig. 6, light source 511 adopts light emitting diode usually, light source 511 scioptics 512 successively that emit beam, drop on the photoelectric conversion module 513 behind indication grating 53 and the scale grating 54 and convert electric signal to, be carved with grid line on transparent indication grating 53 and the scale grating 54, has an angle between the grid line of indication grating 53 and scale grating 54, the grid line of this inclination in this example is positioned on the scale grating 54, so that processing, because the existence of angle between the grid line of indication grating 53 and scale grating 54, can form light and dark Moire fringe, compare with the width of grid line, Moire fringe has very big width, thereby displacement is amplified, photoelectric conversion module 513 is by the intensity variation of a Moire fringe of monitoring, form an approximate sinusoidal variations, subdivide technology by electric signal, thereby obtain the precise displacement of float 55, for determining the direction of displacement, be typically provided with the light source 511 and the photoelectric conversion module 513 of at least two groups, more light sources 511 is set and photoelectric conversion module 513 can reach higher precision, but in the leveling process of large-scale workpiece, is unnecessary.
The structure of transmission-type grating measurement mechanism is comparatively simple, helps reducing cost, but owing to photoelectric conversion module 513 need be arranged in the housing 52, so the whole height of transmission-type grating measurement mechanism is higher.
In Fig. 5, in the described liquid feed device 8, motor 83 is connected with hydraulic pump 84, motor 83 adopts stepper motor usually, the output terminal of hydraulic pump 84 is provided with retaining valve 81, also is parallel with an oil return loop with retaining valve 81 and hydraulic pump 84, and the oil return loop is provided with solenoid valve 86.The output terminal of hydraulic pump 84 also is in series with flow valve 82.Can control turn-on flow rate valve 82 by PLC after measurement finishes, thereby make the liquid in the pipeline 6 be back to liquid reserve tank 85.
Embodiment 2:
In Fig. 1, Fig. 2 and Fig. 4, a kind of automatic level, a plurality of measurement mechanisms 5 are connected with feedthrough 7 by pipeline 6, and feedthrough 7 is connected with liquid feed device 8.Described measurement mechanism 5 is the reflective gratings measurement mechanism.
In the described reflective gratings measurement mechanism, float 55 is installed in the housing 52, and float 55 is provided with scale grating 54, is provided with indication grating 53 at housing 52 opposite positions, and light read element 51 is installed in indication grating 53 outsides.
Be made as reference field 3 for ease of common upper surface with housing 52 is installed, the upper end of housing 52 communicates with air, and for avoiding the influence of wind-engaging, the opening that communicates with air is set to the shape in labyrinth.
In the described smooth read element 51, light source 511, polylith lens 512, catoptron 514 and photoelectric conversion module 513 all are positioned at housing 52 outer and indication grating 53 opposite positions.
In Fig. 7, compare with the transmission-type grating measurement mechanism, the reflective gratings measurement mechanism has increased polylith lens and a catoptron 514, measuring principle changes the reflection mode into by the transmission mode among the embodiment 1, also be to measure by the intensity variation of photoelectric conversion module 513 monitoring Moire fringes, photovalve also is two groups usually, though the more optical element of transmission-type grating measurement mechanism has increased cost accordingly, but the photovalve of transmission-type grating measurement mechanism all is arranged on outside the housing 52, can effectively reduce the height of transmission-type grating measurement mechanism, for example the scale grating 54 on the float 55 is not higher than 5cm usually, add range and housing 52 wall thickness of 5cm, the whole height of transmission-type grating measurement mechanism can not be higher than 11cm usually.Thereby can reduce the difficulty of processing of float 55 and housing 52, promote the measuring accuracy of float 55.
In Fig. 5, in the described liquid feed device 8, motor 83 is connected with hydraulic pump 84, and the output terminal of hydraulic pump 84 is provided with retaining valve 81, also is parallel with an oil return loop with retaining valve 81 and hydraulic pump 84, and the oil return loop is provided with solenoid valve 86.The output terminal of hydraulic pump 84 also is in series with flow valve 82.Can control turn-on flow rate valve 82 by PLC after measurement finishes, thereby make the liquid in the pipeline 6 be back to liquid reserve tank 85.
Embodiment 3:
In Fig. 1 and Fig. 2, a kind of method of utilizing above-mentioned automatic level to carry out leveling may further comprise the steps:
1) by clamping device 4 reference field 3 of each measurement mechanism 5 is alignd with design basis face 9; This is to realize apart from elevation of benchmark of workpiece calibration point by the reference field 3 that makes measurement mechanism 5, for example among Fig. 1, with the reference field 3 of the measurement mechanism 5 at A point place by measuring or pattern promotes a height H
1, the elevation at B point and D point place is constant, and the reference field 3 of the measurement mechanism 5 at C point place reduces a height H
2Thereby, the reference field 3 of the measurement mechanism 5 at A, B, C and D place is all alignd with design basis face 9.By this method, workpiece 2 can be carried out the high precision lifting with various attitudes in theory.
2) be connected each measurement mechanism 5 and liquid feed device 8 with feedthrough 7 by pipeline 6;
3) start liquid feed device 8 and give pipeline 6 feed flows, liquid adopts pure water usually, the rotation of PLC control step motor, drive hydraulic pump 84 rotations, liquid enters pipeline 6 through flow valve 82 and retaining valve 81, flow valve 82 can be guaranteed the stable of feed flow flow, liquid finally enters into measurement mechanism 5, the elevation of the float 55 at least one measurement mechanism 5 is crossed zero-bit and is begun to measure, and measuring-signal is delivered among the PLC, when the range of setting is crossed in the position of this float 55, when for example crossing 4/5 range or gamut, stop liquid feed device 8, retaining valve 81 is closed, and liquid can't reflux;
4) hanging apparatus 1 running, reduce the elevation of workpiece 2 and other measurement mechanism 5 opposite positions, cross the range of setting during reduction with first, even the elevation signal that the measurement mechanism that liquid feed device 8 stops 5 sending is that benchmark compares in PLC, is positioned at identical position or reaches the margin tolerance of designing requirement to each measurement mechanism 5;
5) as the 55 counterpoise new low points of the float in the measurement mechanism all in the leveling process 5 in zero-bit, then start liquid feed device 8 and continue feed flows, and return step 3);
Realize the automatic leveling of workpiece 2 by above-mentioned steps.Measurement finishes the back by PLC control turn-on flow rate valve 82, thereby makes the liquid in the pipeline 6 be back to liquid reserve tank 85.
Claims (8)
1. automatic level is characterized in that: a plurality of measurement mechanisms (5) are connected with feedthrough (7) by pipeline (6), and feedthrough (7) is connected with liquid feed device (8).
2. a kind of automatic level according to claim 1 is characterized in that: described measurement mechanism (5) is transmission-type grating measurement mechanism or reflective gratings measurement mechanism.
3. a kind of automatic level according to claim 2, it is characterized in that: in the described transmission-type grating measurement mechanism, float (55) is installed in the housing (52), float (55) is provided with scale grating (54), be provided with indication grating (53) at housing (52) opposite position, light read element (51) is installed in indication grating (53) opposite position.
4. a kind of automatic level according to claim 3, it is characterized in that: in the described smooth read element (51), light source (511) and lens (512) are arranged on indication grating (53) one sides, and photoelectric conversion module (513) is arranged in the transparent confined space of interior scale grating (54) one sides of housing (52).
5. a kind of automatic level according to claim 2, it is characterized in that: in the described reflective gratings measurement mechanism, float (55) is installed in the housing (52), float (55) is provided with scale grating (54), be provided with indication grating (53) at housing (52) opposite position, light read element (51) is installed in indication grating (53) outside.
6. a kind of automatic level according to claim 5, it is characterized in that: in the described smooth read element (51), light source (511), polylith lens (512), catoptron (514) and photoelectric conversion module (513) all are positioned at outer and indication grating (53) opposite position of housing (52).
7. a kind of automatic level according to claim 1, it is characterized in that: in the described liquid feed device (8), motor (83) is connected with hydraulic pump (84), the output terminal of hydraulic pump (84) is provided with retaining valve (81), retaining valve (81) and hydraulic pump (84) also are parallel with an oil return loop, and the oil return loop is provided with solenoid valve (86).
8. a kind of automatic level according to claim 7 is characterized in that: the output terminal of hydraulic pump (84) also is in series with flow valve (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120042947 CN201993103U (en) | 2011-02-21 | 2011-02-21 | Automatic level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120042947 CN201993103U (en) | 2011-02-21 | 2011-02-21 | Automatic level meter |
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| Publication Number | Publication Date |
|---|---|
| CN201993103U true CN201993103U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120042947 Expired - Fee Related CN201993103U (en) | 2011-02-21 | 2011-02-21 | Automatic level meter |
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| CN (1) | CN201993103U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183241A (en) * | 2011-02-21 | 2011-09-14 | 葛洲坝集团第一工程有限公司 | Automatic level gauge and leveling method thereof |
| CN111457889A (en) * | 2020-06-02 | 2020-07-28 | 中际物联科技（深圳）有限公司 | Method for monitoring subway tunnel settlement through optical fiber static level |
| CN115031684A (en) * | 2022-04-25 | 2022-09-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
-
2011
- 2011-02-21 CN CN 201120042947 patent/CN201993103U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183241A (en) * | 2011-02-21 | 2011-09-14 | 葛洲坝集团第一工程有限公司 | Automatic level gauge and leveling method thereof |
| CN102183241B (en) * | 2011-02-21 | 2012-09-26 | 葛洲坝集团第一工程有限公司 | Automatic level gauge and leveling method thereof |
| CN111457889A (en) * | 2020-06-02 | 2020-07-28 | 中际物联科技（深圳）有限公司 | Method for monitoring subway tunnel settlement through optical fiber static level |
| CN115031684A (en) * | 2022-04-25 | 2022-09-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
| CN115031684B (en) * | 2022-04-25 | 2024-04-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
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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 |
Granted publication date: 20110928 Termination date: 20160221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |