CN108871244B - Flatness calibration device for surveying and mapping engineering - Google Patents
Flatness calibration device for surveying and mapping engineering Download PDFInfo
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- CN108871244B CN108871244B CN201810626512.7A CN201810626512A CN108871244B CN 108871244 B CN108871244 B CN 108871244B CN 201810626512 A CN201810626512 A CN 201810626512A CN 108871244 B CN108871244 B CN 108871244B
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- 238000013507 mapping Methods 0.000 title claims abstract description 21
- 230000003139 buffering effect Effects 0.000 claims abstract description 12
- 239000004579 marble Substances 0.000 claims description 12
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 10
- 229910052753 mercury Inorganic materials 0.000 claims description 10
- 239000005341 toughened glass Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/22—Measuring arrangements characterised by the use of fluids for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
Abstract
The invention discloses a flatness calibrating device for surveying and mapping engineering, which comprises a reinforced plate, a hollow column, a graduated scale, a buffering device, rollers, restoring marbles, a connecting rod, spring columns, a handle, a clamping groove and a clamping device, wherein the graduated scale and the handle are respectively fixed on one side of the reinforced plate through bolts, the clamping groove is uniformly formed in the top of the reinforced plate, the spring columns are arranged in the clamping groove, the restoring marbles are fixed at one ends of the spring columns through bonding, the connecting rod is movably connected between two adjacent restoring marbles through a bearing, the buffering device is uniformly distributed at the bottom of the reinforced plate, the rollers are movably connected at the bottom of the buffering device through the bearing, the hollow column is movably connected between two adjacent rollers through the bearing, the clamping device is fixed at one end of the reinforced plate through the bolts, and the flatness calibrating device, the clamping device has the characteristics of high working precision, convenience in fixing the clamp and high practicability.
Description
Technical Field
The invention relates to the technical field of flatness calibration devices, in particular to a flatness calibration device for surveying and mapping engineering.
Background
Surveying and mapping engineering, namely measuring various information of space and earth and drawing various topographic maps, wherein the shapes, sizes and gravity fields of the earth and other planets are taken as research objects, and the research objects mainly comprise various ground features, landforms, underground geological structures, hydrology, mineral deposits and the like of the earth surface. Mapping work is very important because a mapping engineer must measure and map a terrain map before developing a land or performing a large project, provide other information, and then perform decision making, planning, and design work. The map or traffic tourist map usually seen is completed on the basis of mapping, and the flatness calibration device used in the mapping project plays an important role in promoting the development of the mapping project.
However, the conventional flatness calibration device has problems of low working accuracy, inconvenience in fixing the clamp, and poor practicability. For some roads with small fluctuation amplitude, accurate and continuous calibration processing cannot be carried out, and further the working quality is influenced; the device does not have the function of calibrating the wall surface and the ground surface; meanwhile, the clamp of the flatness calibration device is too loose to be fixed, and the phenomena of slipping and insufficient fastening of the clamp are easy to occur. Therefore, it is necessary to design a flatness calibration device for surveying and mapping engineering with high working precision, convenient fixing clamp and strong practicability.
Disclosure of Invention
The present invention is directed to a flatness calibration device for mapping engineering, so as to solve the problems mentioned in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: a flatness calibration device for surveying and mapping engineering comprises a reinforcing plate, a hollow column, a graduated scale, a buffering device, rollers, restoring elastic balls, a connecting rod, a spring column, a handle, a clamping groove and a clamping device, wherein the graduated scale and the handle are respectively fixed on one side of the reinforcing plate through bolts, the clamping groove is uniformly formed in the top of the reinforcing plate, the spring column is installed inside the clamping groove, the restoring elastic balls are fixedly bonded to one end of the spring column, the connecting rod is movably connected between every two adjacent restoring elastic balls through a bearing, the buffering device is uniformly distributed on the bottom of the reinforcing plate, the rollers are movably connected to the bottom of the buffering device through bearings, the hollow column is movably connected between every two adjacent rollers through bearings, and the clamping device is fixed to one end of the reinforcing plate through a bolt; the buffer device consists of a first expansion spring, a connecting plate, a first chute, a slide rail, a second expansion spring, a vertical column, a movable rod, a first slide block, a second slide block, a limiting block and a buffer fixed seat, the inner walls of the two sides of the buffer fixed seat are correspondingly provided with slide rails, the two ends of the slide rails are respectively fixed with a limiting block through welding, a second slide block is arranged in the slide rails, a connecting plate is fixed between the two second sliding blocks through bolts, first expansion springs are uniformly distributed between the top of the connecting plate and the inner wall of the top of the buffering fixed seat, a first sliding groove is arranged at the center of the bottom of the connecting plate, a first sliding block is correspondingly arranged inside the first sliding groove, a second telescopic spring is connected between the two first sliding blocks, one side of each first sliding block is movably connected with a movable rod through a hinge, and an upright post is connected between the two movable rods; the clamping device comprises third expanding spring, spliced pole, second spout, L type splint, fourth expanding spring, anti-skidding marble, third slider, pull ring and U type cardboard, the second spout has been seted up to the bottom inner wall center department of U type cardboard, the inside correspondence of second spout is installed the third slider, and is connected with the fourth expanding spring between two third sliders, the top of third slider has L type splint through the bolt fastening, one side of L type splint evenly imbeds there is anti-skidding marble, the spliced pole passes U type cardboard, and one end passes through the bolt fastening with L type splint, and the other end has the pull ring through welded fastening, the third expanding spring has been cup jointed to the outside of spliced pole, the both ends of third expanding spring are connected with L type splint and U type cardboard respectively.
According to the technical scheme, the stand column is movably connected with the movable rod through the hinge, the stand column penetrates through the center of the bottom of the buffering fixed seat, and the outer portion of the stand column is coated with the epoxy resin anti-corrosion coating.
According to the technical scheme, the first extension spring, the second extension spring, the third extension spring and the fourth extension spring are all members made of high-carbon steel alloy materials.
According to the technical scheme, the hollow column is a component made of transparent toughened glass, and mercury is filled in the hollow column.
According to the technical scheme, the reinforcing plate is movably connected with the buffering device through the buckle.
According to the technical scheme, the restoring marble is a rubber component.
According to the technical scheme, the anti-skid grains are arranged outside the handle and the pull ring.
According to the technical scheme, the buffer fixing seat is fixed with the sliding rail through the bolt.
Compared with the prior art, the invention has the following beneficial effects:
1: according to the flatness calibrating device, when the flatness calibrating device needs to be used for fixing a clamp with an external part, a pull ring is held by a hand and pulled outwards, the external part is slowly placed between two L-shaped clamp plates, then the pull ring is loosened, in the process, a third expansion spring is compressed, a fourth expansion spring is stretched, the external part can be clamped under the common restoring force action of the third expansion spring and the fourth expansion spring, and anti-skidding elastic balls are uniformly embedded into one side of the L-shaped clamp plates, so that the slipping phenomenon in clamping is effectively avoided, the stability in fixing the clamp is greatly improved, and the fixing clamp operation of the flatness calibrating device is facilitated;
2: when the flatness calibration device needs to calibrate the flatness of a wall surface, a user holds the handle by hand and closely attaches the restoring marble to the wall surface, whether the wall surface is flat can be judged by observing whether each connecting rod is on a vertical line, and when the flatness calibration device needs to calibrate the flatness of the ground surface, the clamping device is connected with an external part, then the flatness calibration device is driven to slowly move;
3: when the flatness calibration device moves on the ground, each buffer device is subjected to pressure action, so that the stand column moves inwards, in the process, the first expansion spring is compressed, the second expansion spring is stretched, and a common restoring force action of the first expansion spring and the second expansion spring offsets a part of external force applied to the flatness calibration device so as to keep the stability during movement, and when the ground has some small fluctuation, the inward movement distance of each stand column is different, so that the position of each roller is different, the hollow column is a component made of transparent toughened glass, mercury is filled in the hollow column, whether the position is flat or not can be known by observing whether the mercury in the hollow column is on a horizontal line, and the precise calibration is convenient for some small fluctuation positions, the working precision of the flatness calibration device is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the buffering device of the present invention;
FIG. 3 is a schematic view of the construction of the cardholder apparatus according to the invention;
in the figure: 1. a reinforcing plate; 2. a hollow column; 3. a graduated scale; 4. a buffer device; 5. a roller; 6. returning the marble; 7. a connecting rod; 8. a spring post; 9. a handle; 10. a card slot; 11. a card holding device; 12. a first extension spring; 13. a connecting plate; 14. a first chute; 15. a slide rail; 16. a second extension spring; 17. a column; 18. a movable rod; 19. a first slider; 20. a second slider; 21. a limiting block; 22. a buffer fixing seat; 23. a third extension spring; 24. connecting columns; 25. a second chute; 26. an L-shaped splint; 27. a fourth extension spring; 28. anti-skid marbles; 29. a third slider; 30. a pull ring; 31. u-shaped cardboard.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a flatness calibration device for surveying and mapping engineering comprises a reinforced plate 1, a hollow column 2, a graduated scale 3, a buffer device 4, a roller 5, a return marble 6, a connecting rod 7, a spring column 8, a handle 9, a clamping groove 10 and a clamping device 11, wherein the graduated scale 3 and the handle 9 are respectively fixed on one side of the reinforced plate 1 through bolts, the clamping groove 10 is uniformly formed in the top of the reinforced plate 1, the spring column 8 is installed in the clamping groove 10, the return marble 6 is fixed at one end of the spring column 8 through bonding, the return marble 6 is a component made of rubber materials, the using effect of the return marble 6 is convenient to improve, the connecting rod 7 is movably connected between two adjacent return marbles 6 through a bearing, the buffer device 4 is uniformly distributed at the bottom of the reinforced plate 1, the reinforced plate 1 is movably connected with the buffer device 4 through a buckle, and the buffer device 4 is convenient to install and disassemble, the bottom of the buffer device 4 is movably connected with rollers 5 through bearings, a hollow column 2 is movably connected between every two adjacent rollers 5 through bearings, the hollow column 2 is a component made of transparent toughened glass, mercury is filled in the hollow column 2, the specific condition in the hollow column 2 can be observed conveniently, and a clamping device 11 is fixed at one end of the reinforced plate 1 through bolts; the buffer device 4 is composed of a first telescopic spring 12, a connecting plate 13, a first sliding chute 14, a sliding rail 15, a second telescopic spring 16, a vertical column 17, a movable rod 18, a first sliding block 19, a second sliding block 20, a limiting block 21 and a buffer fixing seat 22, the sliding rail 15 is correspondingly installed on the inner walls of two sides of the buffer fixing seat 22, the buffer fixing seat 22 is fixed with the sliding rail 15 through bolts so as to improve the stability in connection, the limiting block 21 is fixed at two ends of the sliding rail 15 through welding, the second sliding block 20 is installed inside the sliding rail 15, the connecting plate 13 is fixed between the two second sliding blocks 20 through bolts, the first telescopic springs 12 are uniformly distributed between the top of the connecting plate 13 and the inner wall of the top of the buffer fixing seat 22, the first sliding chute 14 is arranged at the center of the bottom of the connecting plate 13, the first sliding chute 19 is correspondingly installed inside the first sliding block 14, and the second telescopic spring 16, one side of the first sliding block 19 is movably connected with a movable rod 18 through a hinge, an upright post 17 is connected between the two movable rods 18, the upright post 17 is movably connected with the movable rod 18 through the hinge, the upright post 17 passes through the center of the bottom of the buffering fixed seat 22, and the exterior of the upright post is coated with an epoxy resin anti-corrosion coating, so that the movement of the movable rod 18 is facilitated, and the service life of the upright post 17 is prolonged; the clamping device 11 is composed of a third telescopic spring 23, a connecting column 24, a second sliding groove 25, an L-shaped clamping plate 26, a fourth telescopic spring 27, anti-skidding marbles 28, third sliding blocks 29, a pull ring 30 and a U-shaped clamping plate 31, the center of the inner wall of the bottom of the U-shaped clamping plate 31 is provided with the second sliding groove 25, the inside of the second sliding groove 25 is correspondingly provided with the third sliding block 29, the fourth telescopic spring 27 is connected between the two third sliding blocks 29, the top of each third sliding block 29 is fixed with the L-shaped clamping plate 26 through a bolt, the anti-skidding marbles 28 are uniformly embedded into one side of each L-shaped clamping plate 26, the connecting column 24 penetrates through the U-shaped clamping plate 31, one end of the connecting column is fixed with the L-shaped clamping plate 26 through a bolt, the other end of the connecting column is fixed with the pull ring 30 through welding, anti-skidding grains are respectively arranged outside the handle 9 and the pull ring 30, so as to increase the friction between, the first extension spring 12, the second extension spring 16, the third extension spring 23 and the fourth extension spring 27 are all made of high-carbon steel alloy materials, so that the use effect is improved conveniently, and two ends of the third extension spring 23 are respectively connected with the L-shaped clamping plate 26 and the U-shaped clamping plate 31; when the flatness calibrating device needs to be used for fixing clamping with an external part, the pull ring 30 is held by a hand and pulled outwards, the external part is slowly placed between the two L-shaped clamping plates 26, then the pull ring 30 is loosened, in the process, the third telescopic spring 23 is compressed, the fourth telescopic spring 27 is stretched, the external part can be clamped by the common restoring force action of the third telescopic spring 23 and the fourth telescopic spring 27, and the anti-skidding elastic balls 28 are uniformly embedded into one side of the L-shaped clamping plates 26, so that the slipping phenomenon in clamping is effectively avoided, the stability in clamping operation is greatly improved, and the clamping operation of the flatness calibrating device is facilitated; when the flatness calibration device needs to calibrate the flatness of a wall surface, the handle 9 is held by hands firstly, the restoring marble 6 is tightly attached to the wall surface, whether each connecting rod is on a vertical line can be observed, whether the wall surface is flat can be judged, and when the flatness calibration device needs to calibrate the flatness of the ground surface, the clamping device 11 is connected with an external part firstly, then the flatness calibration device is driven to slowly move, the hollow columns 2 are components made of transparent toughened glass, mercury is filled in the hollow columns, whether the ground surface is flat can be judged by observing whether the mercury in each hollow column 2 is on a horizontal line, so that the convenience degree during use is greatly improved, and the practicability of the flatness calibration device is improved; when the flatness calibration device moves on the ground, each buffer device 4 is stressed by pressure, and then the upright posts 17 move inwards, in the process, the first expansion spring 12 is compressed, the second expansion spring 16 is stretched, and a common restoring force action of the first expansion spring 12 and the second expansion spring 16 offsets a part of external force applied to the flatness calibration device so as to keep the stability during movement, and when the ground has some small fluctuation, the inward movement distance of each upright post 17 is different, so that the position of each roller 5 is different, the hollow post 2 is a component made of transparent tempered glass, mercury is filled in the hollow post, whether mercury in the hollow post 2 is on a horizontal line can be known by observing whether the mercury in the hollow post 2 is on the horizontal line, and accurate calibration can be conveniently carried out on some small fluctuation positions, the working precision of the flatness calibration device is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a roughness calibrating device for survey and drawing engineering, is including strengthening board (1), hollow post (2), scale (3), buffer (4), gyro wheel (5), reply marble (6), connecting rod (7), spring post (8), handle (9), draw-in groove (10) and clamping device (11), its characterized in that: a graduated scale (3) and a handle (9) are respectively fixed on one side of the reinforced plate (1) through bolts, clamping grooves (10) are uniformly formed in the top of the reinforced plate (1), spring columns (8) are installed inside the clamping grooves (10), return marbles (6) are fixed at one ends of the spring columns (8) through bonding, a connecting rod (7) is movably connected between every two adjacent return marbles (6) through a bearing, buffer devices (4) are uniformly distributed at the bottom of the reinforced plate (1), rollers (5) are movably connected at the bottoms of the buffer devices (4) through bearings, hollow columns (2) are movably connected between every two adjacent rollers (5), and clamping devices (11) are fixed at one ends of the reinforced plate (1) through bolts; the buffer device (4) is composed of a first telescopic spring (12), a connecting plate (13), a first sliding chute (14), a sliding rail (15), a second telescopic spring (16), a stand column (17), a movable rod (18), a first sliding block (19), a second sliding block (20), a limiting block (21) and a buffer fixing seat (22), the sliding rail (15) is correspondingly installed on the inner walls of the two sides of the buffer fixing seat (22), the limiting block (21) is fixed to the two ends of the sliding rail (15) through welding, the second sliding block (20) is installed inside the sliding rail (15), the connecting plate (13) is fixed between the two second sliding blocks (20) through bolts, the first telescopic springs (12) are uniformly distributed between the top of the connecting plate (13) and the inner wall of the top of the buffer fixing seat (22), and the first sliding chute (14) is formed in the center of the bottom of the connecting plate (13), first sliding blocks (19) are correspondingly installed inside the first sliding grooves (14), a second expansion spring (16) is connected between the two first sliding blocks (19), one side of each first sliding block (19) is movably connected with a movable rod (18) through a hinge, and an upright post (17) is connected between the two movable rods (18); the clamping device (11) is composed of a third telescopic spring (23), a connecting column (24), a second sliding groove (25), an L-shaped clamping plate (26), a fourth telescopic spring (27), anti-skidding marbles (28), a third sliding block (29), a pull ring (30) and a U-shaped clamping plate (31), the second sliding groove (25) is formed in the center of the inner wall of the bottom of the U-shaped clamping plate (31), the third sliding block (29) is correspondingly installed inside the second sliding groove (25), the fourth telescopic spring (27) is connected between the two third sliding blocks (29), the top of each third sliding block (29) is fixedly provided with the L-shaped clamping plate (26) through a bolt, the anti-skidding marbles (28) are uniformly embedded into one side of the L-shaped clamping plate (26), the connecting column (24) penetrates through the U-shaped clamping plate (31), one end of each clamping device is fixed with the L-shaped clamping plate (26) through a bolt, the pull ring (30) is, and a third telescopic spring (23) is sleeved outside the connecting column (24), and two ends of the third telescopic spring (23) are respectively connected with the L-shaped clamping plate (26) and the U-shaped clamping plate (31).
2. A flatness calibration device for mapping engineering according to claim 1, characterized in that: stand (17) pass through hinge swing joint with movable rod (18), stand (17) pass the bottom center department of buffering fixing base (22), and the outside coating has epoxy anticorrosion coating.
3. A flatness calibration device for mapping engineering according to claim 1, characterized in that: the first extension spring (12), the second extension spring (16), the third extension spring (23) and the fourth extension spring (27) are all members made of high-carbon steel alloy.
4. A flatness calibration device for mapping engineering according to claim 1, characterized in that: the hollow column (2) is a component made of transparent toughened glass and is filled with mercury.
5. A flatness calibration device for mapping engineering according to claim 1, characterized in that: the reinforced plate (1) is movably connected with the buffer device (4) through a buckle.
6. A flatness calibration device for mapping engineering according to claim 1, characterized in that: the recovery marble (6) is a rubber component.
7. A flatness calibration device for mapping engineering according to claim 1, characterized in that: anti-skid grains are arranged on the outer portions of the handle (9) and the pull ring (30).
8. A flatness calibration device for mapping engineering according to claim 1, characterized in that: the buffer fixing seat (22) is fixed with the sliding rail (15) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626512.7A CN108871244B (en) | 2018-06-15 | 2018-06-15 | Flatness calibration device for surveying and mapping engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626512.7A CN108871244B (en) | 2018-06-15 | 2018-06-15 | Flatness calibration device for surveying and mapping engineering |
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| CN108871244A CN108871244A (en) | 2018-11-23 |
| CN108871244B true CN108871244B (en) | 2020-05-29 |
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| CN110043266B (en) * | 2019-03-12 | 2021-01-05 | 天津大学 | Method for directly measuring shield tail clearance of shield tunnel |
| CN110165819A (en) * | 2019-05-30 | 2019-08-23 | 苏州中固维科动力技术有限公司 | A kind of vacuum motor for being easy to radiate |
| CN111796218B (en) * | 2020-09-10 | 2020-12-01 | 四川华东电气集团有限公司 | Electronic transformer winding deformation tester |
| CN113959314B (en) * | 2021-10-26 | 2023-07-14 | 武汉市工程科学技术研究院 | Flatness calibration device for surveying and mapping engineering |
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| CN100398402C (en) * | 2003-11-24 | 2008-07-02 | 北京航空航天大学 | Position detecting device for full-automatic rolled steel bundling and packaging production line |
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|---|---|---|---|---|
| US4852266A (en) * | 1987-12-10 | 1989-08-01 | Essco, Incorporated | Angle measuring adapter |
| US5761823A (en) * | 1994-09-27 | 1998-06-09 | Williamson, Jr.; John S. | Relative planarity verification apparatus and method of use |
| CN1664496A (en) * | 2005-03-25 | 2005-09-07 | 梁嘉麟 | Method for testing flatness data |
| CN103267472A (en) * | 2013-05-16 | 2013-08-28 | 常州纺织服装职业技术学院 | Flatness measuring instrument for engineering and measuring method thereof |
| CN103424092A (en) * | 2013-07-05 | 2013-12-04 | 广西玉柴机器股份有限公司 | Grooved pulley support coplanarity detection device |
| CN206991641U (en) * | 2017-05-10 | 2018-02-09 | 河南工程学院 | A kind of seismic prospecting analogue experiment installation |
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| CN108871244A (en) | 2018-11-23 |
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Inventor after: Zhou Zhuan Inventor after: Tong Zhiyuan Inventor after: Cao Jian Inventor after: Ge Shaobin Inventor after: Xu Baohua Inventor after: Li Hanzhang Inventor before: Zhou Zhuan Inventor before: Tong Zhiyuan Inventor before: Ge Shaobin Inventor before: Xu Baohua Inventor before: Li Hanzhang |
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Denomination of invention: A flatness calibration device for surveying and mapping engineering Granted publication date: 20200529 Pledgee: Bank of Communications Co.,Ltd. Wuhan Branch of Hubei Free Trade Experimental Zone Pledgor: WUHAN ZHITU TECHNOLOGY Co.,Ltd. Registration number: Y2024980011152 |