CN115854218B - Centering and leveling equipment for engineering measurement - Google Patents
Centering and leveling equipment for engineering measurement Download PDFInfo
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- CN115854218B CN115854218B CN202310144156.6A CN202310144156A CN115854218B CN 115854218 B CN115854218 B CN 115854218B CN 202310144156 A CN202310144156 A CN 202310144156A CN 115854218 B CN115854218 B CN 115854218B
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Abstract
The invention belongs to the technical field of engineering measurement, and particularly relates to centering and leveling equipment for engineering measurement, which comprises a first adjusting plate, wherein a second adjusting plate is arranged above the first adjusting plate, an instrument mounting plate is arranged above the second adjusting plate, a supporting frame is equidistantly arranged at the bottom end edge of the first adjusting plate, a telescopic supporting plate is hinged and installed inside the supporting frame through a damping rotating shaft, a centering hole is formed in the middle of the top end of the first adjusting plate, a U-shaped adjusting plate is equidistantly arranged at the top end of the first adjusting plate, and a transmission screw is arranged inside the U-shaped adjusting plate in a penetrating mode. Through the use of support frame, flexible type backup pad and laser emitter, can carry out thick centering to equipment, through the cooperation of spirit level, three group's U type regulating plates, drive screw, drive slider, U type cardboard, jiong type cardboard and bracing piece use, can carry out the fine centering to equipment to can realize the flattening to equipment, make things convenient for measuring instrument's installation to use.
Description
Technical Field
The invention belongs to the technical field of engineering measurement, and particularly relates to centering and leveling equipment for engineering measurement.
Background
When outdoor engineering measuring instruments such as theodolites and leveling instruments are used for measuring, the measuring instruments are required to be centered and leveled, so that the center of the instrument and the center of a station measuring mark on the bottom surface are positioned on the same plumb line, the vertical axis of the instrument is vertical, and the horizontal dial is horizontal, thereby ensuring the accuracy of measured data.
The Chinese patent with publication number of CN111551157A discloses a centering and leveling device for engineering measurement, which has the beneficial effects that the distance between a ranging box and a leveling box is measured through an infrared reflection lamp and an infrared range finder, the measured values of the two infrared range finders are adjusted through an electric telescopic rod until the measured values are the same, the laser range finders are ensured to be in a horizontal line, and then the laser range finders are started to work; the distance measuring direction and the distance measuring position of the laser distance measuring device can be changed through the arrangement of the position adjusting mechanism and the angle adjusting mechanism, so that the distance measuring and the error calculating are convenient; through elevating system's setting, can be with the movable wheel income removal incasement portion, convenient removal and measurement. In conclusion, the horizontal calibration device is convenient to use, high in horizontal calibration efficiency and accurate in ranging;
but this centering flattening equipment is in the horizontality between can't ensure when using between level box and the ground, when the level box is not in the horizontality with the ground, can influence the normal use of centering flattening equipment, and the in-process of centering flattening can not demonstrate directly perceivedly, appears the error easily, and the laser range finder of this equipment can only carry out angle modulation at the horizontal direction simultaneously, and data acquisition limitation is great.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides centering and leveling equipment for engineering measurement, which can perform coarse centering on equipment through the use of a support frame, a telescopic support plate and a laser emitter, and can perform fine centering on the equipment through the cooperation of a level gauge, three groups of U-shaped adjusting plates, a transmission screw, a transmission sliding block, a U-shaped clamping plate, a jiong -shaped clamping plate and a support rod, and has the characteristics of being convenient for the installation and the use of measuring instruments.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a centering leveling equipment for engineering measurement, includes an adjusting plate, an adjusting plate top is provided with No. two adjusting plates, no. two adjusting plate top is provided with the instrument mounting panel, no. one adjusting plate top middle part has seted up the centre bore, no. one adjusting plate top equidistance is provided with U type adjusting plate, U type adjusting plate inside runs through and installs drive screw, drive screw outer wall one side is installed to drive screw, drive slider top is provided with the U type cardboard, no. two adjusting plate bottom equidistance is provided with jiong type cardboard, be connected through the bracing piece between U type cardboard and the corresponding jiong type cardboard;
the middle part in the second adjusting plate is penetrated and installed with a laser emitter, the top end edge part of the second adjusting plate is provided with an annular guide groove, one side of the second adjusting plate is provided with an F-shaped clamping plate close to the annular guide groove, the top of one side of the F-shaped clamping plate is provided with a connecting hole, the top of one side of the F-shaped clamping plate is provided with three limit screw holes close to the connecting hole, the distances from the three limit screw holes to the connecting hole are the same, the included angle between two adjacent limit screw holes is 90 degrees, the top of one side of the F-shaped clamping plate is provided with a fang clamping plate close to the connecting hole, the middle part of one side of the fang -shaped clamping plate is provided with a connecting column, the middle part of one side of the connecting column is provided with a fixing screw groove, the top of one side of the fang -shaped clamping plate is provided with a limit clamping hole, connecting hole internally mounted has fixing screw, fixing screw one end is located inside the fixed helicoidal groove, spacing screw internally mounted has spacing screw, spacing screw one end is located inside the spacing card hole, fang cardboard internally mounted has laser range finder, no. two regulating plate top both sides all embedded type installs the spirit level, no. two regulating plate top middle part equidistance have been seted up T shape through-hole, T shape through-hole internally mounted has the support column, the support column top is connected with the instrument mounting panel, the inner wall height of F shape cardboard is the same with the thickness of No. two regulating plates, F shape cardboard inner wall top is provided with the arc card strip, the arc card strip is located annular guide slot inside.
As an optimized technical scheme of the centering and leveling device for engineering measurement, the bottom end edge of the first adjusting plate is equidistantly provided with the supporting frame, and the inside of the supporting frame is hinged with the telescopic supporting plate through the damping rotating shaft.
As a preferable technical scheme of the centering and leveling equipment for engineering measurement, the number of the U-shaped adjusting plates and the number of the jiong -shaped clamping plates are three, the distance between two adjacent U-shaped adjusting plates and the distance between two adjacent jiong -shaped clamping plates are 120 degrees, and the three U-shaped adjusting plates and the three jiong -shaped clamping plates are matched.
As an optimized technical scheme of the centering and leveling device for engineering measurement, the middle part of the bottom end of the inner wall of the U-shaped adjusting plate is provided with the T-shaped sliding hole, the middle part of the bottom end of the transmission sliding block is provided with the T-shaped sliding block, and the T-shaped sliding block is positioned in the T-shaped sliding hole.
As a preferable technical scheme of the centering and leveling device for engineering measurement, the U-shaped clamping plate and the supporting rod and the jiong -shaped clamping plate and the supporting rod are connected through the rotating rod.
As a preferable technical scheme of the centering and leveling device for engineering measurement, the diameter of the connecting column is the same as the inner diameter of the connecting hole, and the inner diameter of the limiting clamping hole is the same as the inner diameter of the limiting screw hole.
As an optimized technical scheme of the centering and leveling device for engineering measurement, an extrusion screw hole is formed in the middle of the other side of the fang clamping plate, an extrusion screw is arranged in the extrusion screw hole, and a pressing plate is welded on one side of the extrusion screw.
As an optimized technical scheme of the centering and leveling device for engineering measurement, connecting screw grooves are formed in the bottom end of the instrument mounting plate at equal intervals, external threads are formed in the top of the outer wall of the support column and the bottom of the outer wall of the support column, and the top of the outer wall of the support column is located in the connecting screw grooves.
As an optimized technical scheme of the centering and leveling device for engineering measurement, a round stop block is arranged at the bottom of the outer wall of the support column close to an external thread arranged at the bottom of the outer wall of the support column, the diameter of the round stop block is identical to the diameter of the inner top of a T-shaped through hole, and a fixing nut is arranged at the bottom of the outer wall of the support column close to the round stop block.
Compared with the prior art, the invention has the beneficial effects that:
through the use of support frame, flexible type backup pad and laser emitter, can carry out thick centering to equipment, through the spirit level, three group's U type regulating plate, drive screw, the transmission slider, U type cardboard, jiong type cardboard and bracing piece use in the cooperation, can carry out the fine centering to equipment, and can realize the flattening to equipment, comparatively directly perceivedly, make things convenient for measuring instrument's installation to use, through F shape cardboard, fang type cardboard, extrusion screw and clamp plate use in the cooperation, can fix laser rangefinder, through making laser rangefinder perpendicular orientation ground, can carry out rough measurement to the interval between No. two regulating plate and the ground measuring station, through rotating F shape cardboard, make F shape cardboard and measuring instrument be in parallel state, and rotate laser rangefinder into horizontal state, make laser rangefinder orientation wait the measurement point, can carry out rough measurement to the interval between measurement point and the measuring instrument, calculate the data reference that provides for measuring instrument survey and survey, the high-efficient use of being favorable to improving surveying instrument.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view showing the installation structure of the support bar of the present invention;
FIG. 3 is a bottom view of the second adjustment plate of the present invention;
FIG. 4 is an exploded view of the installation of the fang card of the present invention;
FIG. 5 is an exploded view of the installation of the support post of the present invention;
FIG. 6 is a cross-sectional view of a U-shaped regulator plate of the present invention;
FIG. 7 is a schematic view of the structure of the area A in FIG. 1 according to the present invention;
fig. 8 is a schematic view of the structure of the region B in fig. 4 according to the present invention.
In the figure: 1. a first adjusting plate; 2. a support frame; 3. a telescopic support plate; 4. a centering hole; 5. a second adjusting plate; 6. a U-shaped adjusting plate; 7. a drive screw; 8. a transmission slide block; 9. a U-shaped clamping plate; 10. jiong type clamping plates; 11. a support rod; 12. a laser emitter; 13. a T-shaped through hole; 14. a level gauge; 15. an annular guide groove; 16. an F-shaped clamping plate; 17. fang type clamping plates; 18. a laser range finder; 19. a support column; 20. an instrument mounting plate; 21. arc-shaped clamping strips; 22. a connecting column; 23. fixing the screw groove; 24. a connection hole; 25. a fixed screw; 26. limiting screw holes; 27. a limit screw; 28. limiting clamping holes; 29. extruding the screw holes; 30. extruding a screw; 31. a pressing plate; 32. a connecting screw groove; 33. an external thread; 34. a circular stop; 35. and fixing the screw cap.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-8, the present invention provides the following technical solutions: the utility model provides a centering leveling equipment for engineering measurement, including adjusting plate 1, adjusting plate 1 top is provided with No. two adjusting plates 5, no. two adjusting plates 5 top is provided with instrument mounting panel 20, no. 1 bottom limit equidistance is provided with support frame 2, telescopic backup pad 3 is installed through damping pivot articulated to support frame 2 inside, can support equipment, be convenient for the installation and use of equipment, centering hole 4 has been seted up at adjusting plate 1 top middle part, adjusting plate 1 top equidistance is provided with U type regulating plate 6, U type regulating plate 6 inside runs through and installs drive screw 7, drive slider 8 is installed to drive screw 7 outer wall one side, threaded hole has been seted up to drive slider 8 inside, pass through threaded connection between drive slider 8 and the drive screw 7, T type slide hole has been seted up at U type regulating plate 6 inner wall bottom middle part, the middle part of the bottom end of the transmission slide block 8 is provided with a T-shaped slide block, the T-shaped slide block is positioned in a T-shaped slide hole, the transmission slide block 8 can be limited, the transmission slide block 8 is convenient to use, the top end of the transmission slide block 8 is provided with a U-shaped clamping plate 9, the bottom end of a second regulating plate 5 is equidistantly provided with jiong -shaped clamping plates 10, the U-shaped clamping plates 9 are connected with corresponding jiong -shaped clamping plates 10 through supporting rods 11, the number of the U-shaped regulating plates 6 and the number of jiong -shaped clamping plates 10 are three, the distance between two adjacent U-shaped regulating plates 6 and the distance between two adjacent jiong -shaped clamping plates 10 are 120 degrees, the three U-shaped regulating plates 6 and the three jiong -shaped clamping plates 10 are matched, the U-shaped clamping plates 9 are connected with the supporting rods 11, and the jiong -shaped clamping plates 10 are connected with the supporting rods 11 through rotating rods, and the supporting rods 11 are convenient to install and use;
the middle part in the second adjusting plate 5 is penetrated and installed with the laser emitter 12, the top end edge part of the second adjusting plate 5 is provided with the annular guide groove 15, one side of the second adjusting plate 5 is provided with the F-shaped clamping plate 16 near the annular guide groove 15, the F-shaped clamping plate 16 is made of hard plastic, the height of the inner wall of the F-shaped clamping plate 16 is the same as the thickness of the second adjusting plate 5, the top end of the inner wall of the F-shaped clamping plate 16 is provided with the arc clamping strip 21, the arc clamping strip 21 is positioned in the annular guide groove 15, the F-shaped clamping plate 16 can be limited, the F-shaped clamping plate 16 is convenient to install and use, the top of one side of the F-shaped clamping plate 16 is provided with the fang type clamping plate 17, the top of one side of the F-shaped clamping plate 16 is provided with the connecting hole 24, the fixing screw 25 is arranged in the connecting hole 24, the middle of one side of the fang type clamping plate 17 is provided with the connecting column 22, the diameter of the connecting column 22 is the same as the inner diameter of the connecting hole 24, one side of the connecting column 22 is provided with the fixing screw groove 23, one end of the fixing screw 25 is positioned in the fixing screw groove 23, the fang type clamping plate 17 and the F-shaped clamping plate 16 can be movably connected, a plurality of limit screw holes 26 are formed in the top of one side of the F-shaped clamping plate 16 and close to the connecting hole 24, limit screws 27 are arranged in the limit screw holes 26, the number of the limit screw holes 26 is three, the distances from the three limit screw holes 26 to the connecting hole 24 are the same, the included angle between every two adjacent limit screw holes 26 is 90 degrees, a limit clamping hole 28 is formed in the top of one side of the fang type clamping plate 17, the inner diameter of the limit clamping hole 28 is the same as the inner diameter of the limit screw hole 26, one end of the limit screw 27 is positioned in the limit clamping hole 28, the fang type clamping plate 17 can be limited and fixed, the use angle of the fang type clamping plate 17 is convenient to be adjusted, a laser range finder 18 is arranged in the fang type clamping plate 17, an extrusion screw hole 29 is formed in the middle of the other side of the fang type clamping plate 17, the extrusion screw hole 29 is internally provided with the extrusion screw 30, and one side of the extrusion screw 30 is welded with the pressing plate 31, so that the laser range finder 18 can be extruded and fixed, and the installation applicability of equipment is improved;
the level 14 is all installed to two sides on No. two regulating plates 5 top, T shape through-hole 13 has been seted up to No. two regulating plates 5 top middle part equidistance, T shape through-hole 13 internally mounted has support column 19, the support column 19 top is connected with instrument mounting panel 20, connecting helicoidal groove 32 has been seted up to instrument mounting panel 20 bottom equidistance, external screw thread 33 has all been seted up at support column 19 outer wall top and support column 19 outer wall bottom, support column 19 outer wall top is located connecting helicoidal groove 32 inside, be convenient for be connected between support column 19 and the instrument mounting panel 20, the support column 19 outer wall bottom is close to the external screw thread 33 department that support column 19 outer wall bottom set up is provided with circular dog 34, the diameter of circular dog 34 is the same with the interior top diameter of T shape through-hole 13, support column 19 outer wall bottom is close to circular dog 34 department and is installed fixed nut 35, be convenient for be connected fixedly between support column 19 and No. two regulating plates 5, thereby can reduce instrument mounting panel 20's installation degree of difficulty.
The working principle and the using flow of the invention are as follows: in the using process of the invention, a worker moves equipment to the vicinity of a measuring station, then three telescopic supporting plates 3 are adjusted to support the equipment, in the adjusting process of the equipment, the worker observes the level 14 on the second adjusting plate 5, so that the air bubble in the level 14 is in a relatively central state, and starts the laser transmitter 12, so that the laser transmitter 12 is aligned with the measuring station mark on the ground, coarse centering is carried out, then the worker installs a laser range finder 18 in a fang type clamping plate 17, and installs a measuring instrument on an instrument mounting plate 20;
after the measuring instrument is installed, a worker observes the level 14 on the second adjusting plate 5 to check whether the second adjusting plate 5 is in a horizontal state, and when the air bubble in the level 14 is not in a centered state, the worker rotates the transmission screws 7 arranged in the three U-shaped adjusting plates 6 to slightly adjust the angles of the three support rods 11, so that centering and leveling of the second adjusting plate 5 are realized, and the equipment is centered and leveled, so that the installation and use of the measuring instrument by the worker can be facilitated;
through with laser range finder 18 perpendicular orientation ground, can carry out rough measurement to the interval between No. two regulating plates 5 and the ground survey site, through rotating F shape cardboard 16 for F shape cardboard 16 is in parallel state with measuring instrument, and rotates laser range finder 18 horizontal state, makes laser range finder 18 orientation wait the measurement point, can treat the interval between measurement point and the measuring instrument, provides data reference for the data calculation of measuring instrument survey and drawing, is favorable to improving the accuracy of survey and drawing.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Centering and leveling equipment for engineering measurement, comprising a first adjusting plate (1), and being characterized in that: the utility model discloses a U-shaped clamp plate, including U-shaped adjusting plate (1), instrument mounting plate (20), U-shaped adjusting plate (6), drive screw (7) are installed in the inside running through of U-shaped adjusting plate (6), drive slider (8) are installed to drive screw (7) outer wall one side, drive slider (8) top is provided with U-shaped clamp plate (9), no. two adjusting plate (5) bottom equidistance is provided with jiong type clamp plate (10), be connected through bracing piece (11) between U-shaped clamp plate (9) and corresponding jiong type clamp plate (10);
the utility model discloses a limiting screw type device for a screw rod, including a connecting screw rod (27), a connecting screw rod (28), a connecting screw rod (27) and a connecting screw rod (28) are arranged on the top of one side of a F-shaped clamping plate (16), a laser emitter (12) is installed in the middle part in a second adjusting plate (5), an annular guide groove (15) is arranged on the top of the second adjusting plate (5), a connecting column (22) is arranged on one side of the second adjusting plate, which is close to the annular guide groove (15), a connecting hole (24) is arranged on the top of one side of the F-shaped clamping plate (16), three limiting screw holes (26) are arranged on the top of one side of the F-shaped clamping plate (16), the distance between the limiting screw holes (26) and the connecting hole (24) is the same, the included angle between two adjacent limiting screw holes (26) is 90 degrees, a fang -shaped clamping plate (17) is arranged on the top of one side of the F-shaped clamping plate (16), a connecting column (22) is arranged on the middle part of one side of the connecting column (22), a fixing screw groove (23) is arranged on the middle part of one side of the connecting column (22), a limiting screw rod (28), a limiting screw hole (28) is arranged on the top of one side of the top of the F-shaped clamping plate (16), the connecting screw rod (26) and the limiting screw rod (27), fang type cardboard (17) internally mounted has laser range finder (18), level (14) are all installed to No. two regulating plate (5) top both sides in embedded mode, T shape through-hole (13) have been seted up to No. two regulating plate (5) top middle part equidistance, T shape through-hole (13) internally mounted has support column (19), support column (19) top is connected with instrument mounting panel (20), the inner wall height of F shape cardboard (16) is the same with the thickness of No. two regulating plate (5), F shape cardboard (16) inner wall top is provided with arc card strip (21), arc card strip (21) are located annular guide slot (15) inside.
2. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the first adjusting plate (1) is provided with a supporting frame (2) at the bottom end edge equidistance, and a telescopic supporting plate (3) is hinged inside the supporting frame (2) through a damping rotating shaft.
3. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the number of the U-shaped adjusting plates (6) and the number of the jiong -shaped clamping plates (10) are three, the distance between every two adjacent U-shaped adjusting plates (6) and the distance between every two adjacent jiong -shaped clamping plates (10) are 120 degrees, and the three U-shaped adjusting plates (6) and the three jiong -shaped clamping plates (10) are matched.
4. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: t-shaped sliding holes are formed in the middle of the bottom end of the inner wall of the U-shaped adjusting plate (6), T-shaped sliding blocks are arranged in the middle of the bottom end of the transmission sliding block (8), and the T-shaped sliding blocks are located inside the T-shaped sliding holes.
5. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the U-shaped clamping plate (9) is connected with the supporting rod (11) and the jiong -shaped clamping plate (10) is connected with the supporting rod (11) through a rotating rod.
6. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the diameter of the connecting column (22) is the same as the inner diameter of the connecting hole (24), and the inner diameter of the limiting clamping hole (28) is the same as the inner diameter of the limiting screw hole (26).
7. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the novel clamping plate is characterized in that an extrusion screw hole (29) is formed in the middle of the other side of the fang clamping plate (17), an extrusion screw (30) is mounted in the extrusion screw hole (29), and a pressing plate (31) is welded on one side of the extrusion screw (30).
8. A centering and levelling apparatus for engineering measurements according to claim 1, characterized in that: the instrument mounting plate (20) bottom equidistance has been seted up and has been connected helicoidal (32), external screw thread (33) have all been seted up at support column (19) outer wall top and support column (19) outer wall bottom, support column (19) outer wall top is located inside connection helicoidal (32).
9. A centering and leveling apparatus for engineering measurements according to claim 8 wherein: the outer wall bottom of the support column (19) is provided with a circular stop block (34) near an external thread (33) arranged at the outer wall bottom of the support column (19), the diameter of the circular stop block (34) is the same as the inner top diameter of the T-shaped through hole (13), and a fixing nut (35) is arranged at the outer wall bottom of the support column (19) near the circular stop block (34).
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| CN202310144156.6A CN115854218B (en) | 2023-02-21 | 2023-02-21 | Centering and leveling equipment for engineering measurement |
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| CN202310144156.6A CN115854218B (en) | 2023-02-21 | 2023-02-21 | Centering and leveling equipment for engineering measurement |
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| CN115854218B true CN115854218B (en) | 2023-04-28 |
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| CN116067349B (en) * | 2023-03-31 | 2023-07-04 | 中国建筑一局(集团)有限公司 | Automatic centering device and automatic centering method for laser measuring instrument |
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| CN210135909U (en) * | 2019-08-21 | 2020-03-10 | 熊秋荣 | Multifunctional laser ranging leveling device |
| CN211344623U (en) * | 2019-09-29 | 2020-08-25 | 河南众益建设工程质量鉴定有限公司 | Distance measuring device for civil engineering |
| CN111551157A (en) * | 2020-06-19 | 2020-08-18 | 贵州工业职业技术学院 | A centering leveling device for engineering survey |
| CN111853484A (en) * | 2020-07-30 | 2020-10-30 | 陕西工业职业技术学院 | A centering leveling device for engineering survey |
| CN212512995U (en) * | 2020-08-03 | 2021-02-09 | 四川筑本勘测设计有限公司 | Leveling instrument leveling device for building exploration |
| CN112361187A (en) * | 2020-11-02 | 2021-02-12 | 郭真琴 | BIM-based construction measurement lofting device and lofting method thereof |
| CN214308609U (en) * | 2020-12-03 | 2021-09-28 | 上海珏荷建筑工程有限公司 | Road and bridge construction measuring device |
| CN113218375A (en) * | 2021-04-27 | 2021-08-06 | 山东恒信建业集团有限公司 | Laser mapping method |
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| CN114060686A (en) * | 2021-11-15 | 2022-02-18 | 温州职业技术学院 | Civil engineering uses novel surveying instrument |
| CN216768829U (en) * | 2021-12-03 | 2022-06-17 | 苏州中吴电力工程有限公司 | Measure accurate surveyor's level |
| CN217210888U (en) * | 2022-03-03 | 2022-08-16 | 沈阳天兴建筑工程有限公司 | Building engineering surveyor's level |
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