CN111912394A - Perpendicularity detection equipment for building engineering - Google Patents
Perpendicularity detection equipment for building engineering Download PDFInfo
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- CN111912394A CN111912394A CN202010790527.4A CN202010790527A CN111912394A CN 111912394 A CN111912394 A CN 111912394A CN 202010790527 A CN202010790527 A CN 202010790527A CN 111912394 A CN111912394 A CN 111912394A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
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Abstract
The invention relates to the technical field of verticality detection equipment, in particular to verticality detection equipment for building engineering, which comprises a verticality detection equipment main body, wherein the verticality detection equipment main body comprises a fixed base, one end surface of the fixed base is connected with a lower fixed base, one end surface of the fixed base is hinged with a laser generator, one end surface of the lower fixed base is connected with a first connecting column, one end surface of the first connecting column is connected with a first connecting sleeve, one end surface of the first connecting sleeve is connected with a first supporting rod, and the outer surface of the first supporting rod is sleeved with a first supporting sleeve. The wall surface verticality of the higher position can be conveniently detected.
Description
Technical Field
The invention relates to the technical field of perpendicularity detection equipment, in particular to perpendicularity detection equipment for building engineering.
Background
Along with the progress and development of the society, the range of activities of people is gradually enlarged and gradually gathered into an urban group, the accompanying building technology of people is also gradually developed and perfected, and the building standards of building buildings are also gradually strict in order to ensure the living quality of buildings, wherein in the existing building construction process, for the stacking of external walls, workers are usually positioned indoors to perform wall building operation due to the influence of the construction process, and are easy to deflect inwards when the external walls are stacked due to the construction technique and inertia, so that the detection of the perpendicularity of the indoor wall surfaces is particularly important, and the perpendicularity detection equipment is usually adopted in the prior art to perform the wall body perpendicularity detection.
At present, current partial straightness check out test set that hangs down, it generally comes to carry out the straightness that hangs down to the wall of building through using laser generator when carrying out the during operation, but carry out the straightness that hangs down to the wall on roof at needs and detect time, still need fix laser generator, but laser generator quality is great, generally adopt inflation screw or artifical manual lift laser generator to support fixedly, but adopt this mode can lead to fixing comparatively inconveniently, and current partial straightness check out test set that hangs down, it itself only launches a laser line and detects the wall, detection range is limited, it is not wide enough to detect the face, there is certain limitation, influence staff's detection efficiency, therefore need for a building engineering to hang down straightness check out test set and solve above-mentioned problem urgently.
Disclosure of Invention
The invention aims to provide perpendicularity detection equipment for construction engineering, and aims to solve the problems that the existing partial perpendicularity detection equipment provided in the background art is inconvenient to fix at a position where detection is higher, and the existing partial perpendicularity detection equipment is small in detection area and low in detection efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a perpendicularity detection device for building engineering comprises a perpendicularity detection device body, wherein the perpendicularity detection device body comprises a fixed base, a lower fixed base is connected to one end surface of the fixed base, a laser generator is hinged to one end surface of the fixed base, a first connecting column is connected to one end surface of the lower fixed base, a first connecting sleeve is connected to one end surface of the first connecting column, a first supporting rod is connected to one end surface of the first connecting sleeve, a first bearing sleeve is sleeved on the outer surface of the first supporting rod, a tensioning mechanism is connected to one side of the first bearing sleeve, a fixing mechanism is connected to the other side surface of the first bearing sleeve, a threaded sleeve is connected to one end surface of the first supporting rod, an elastic piece abuts against the inner wall of the threaded sleeve, a second supporting rod abuts against the inner wall of the elastic piece, and a laser receiver is connected to one end surface of the second supporting rod, and a filter lens is connected to one side surface of the laser receiver;
the tensioning mechanism comprises a first connecting seat, a mirror surface cloth, a first fixing column, a cloth winding roller, a first fixing block, an arc-shaped pawl, a first gear, a torsion spring, a second fixing column, a second clamping seat and an inner clamping seat, wherein the outer surface of the first bearing sleeve is fixedly connected with the first fixing block, one side of the first fixing block is fixedly connected with the first connecting seat, the inner wall of the first connecting seat is connected with the first gear through a bearing, one side surface of the first gear is fixedly connected with the second fixing column, one side surface of the second fixing column is connected with the torsion spring, one side surface of the second fixing column is fixedly connected with the second clamping seat, the outer surface of the second clamping seat is abutted with the first fixing column, the inner clamping seat is arranged inside the first fixing column, one side outer surface of the first fixing column is abutted with the cloth winding roller, and one side surface of the cloth winding roller is connected with the mirror surface cloth, the inner wall of the first connecting seat is connected with an arc-shaped pawl through an inserted link.
Preferably, fixed establishment includes first fixing base, regulating wheel, square section of thick bamboo, holder, threaded rod and second fixing base, one side surface connection of first holding sleeve has first fixing base, the opposite side surface connection of first holding sleeve has the second fixing base, and one side surface connection of second fixing base has the holder, threaded rod runs through on one side surface of holder, one side surface butt of threaded rod has square section of thick bamboo, one side surface connection of threaded rod has the regulating wheel.
Preferably, the outer surface of the first supporting rod is connected with a first bearing sleeve in a sliding mode, and the shape structure of the first bearing sleeve is in a half arc shape.
Preferably, the outer surface of the elastic part is provided with threads, and the outer surface of the elastic part is in threaded connection with a threaded sleeve.
Preferably, the shape structure of the arc-shaped pawl is arc-shaped, and the arc-shaped pawl is connected to the inner wall of the first connecting seat through a rotating rod.
Preferably, one end of the torsion spring is connected to the surface of the second fixing column, and one end of the torsion spring is fixedly connected to the inner wall of the first connecting seat.
Preferably, the surface shape structure of the inner clamping seat is cross-shaped, and the inner wall of the inner clamping seat is in sliding abutting joint with the second clamping seat.
Preferably, a through groove is formed in the square barrel, and a threaded rod is connected to the inner thread of the through groove.
Preferably, one end of the arc-shaped pawl is connected with a special-shaped clamping block, and the special-shaped clamping block is connected with the outer surface of the first gear in a clamping mode.
Compared with the prior art, the invention has the beneficial effects that: this straightness check out test set hangs down for building engineering through being provided with straining device, can effectively increase the laser beam to the cover face of wall body to can increase the detection effect to the wall body straightness that hangs down, and the device is through setting up fixed establishment, can conveniently fix the mirror surface cloth after carrying out the altitude mixture control according to the in-service use needs, can conveniently detect the wall straightness that hangs down of higher position department.
1. The device is through being provided with straining device, and after accomplishing the fixed back to the cloth wind-up roll, can manually stir the arc pawl, makes the arc pawl block in the clearance of first gear surface tooth piece to can accomplish the rigidity to the cloth wind-up roll, and straighten the mirror surface cloth, and reflect laser through the mirror surface cloth, can effectively increase the pencil that laser produced the refraction, and then can increase the detection efficiency to the wall straightness that hangs down.
2. The device can conveniently fasten the first bearing sleeve by being provided with a fixing mechanism, and then can conveniently adjust the expansion area of the mirror surface cloth according to actual detection needs under different height conditions, and the working height of the second support rod and the first support rod is adjusted by matching the elastic part and the threaded sleeve, so that the verticality detection of the wall surface by workers under different height environments can be facilitated.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a perspective view of the arc pawl and first gear of the present invention;
fig. 3 is a schematic structural perspective view of a second card holder and a second fixing column according to the present invention;
fig. 4 is a schematic structural perspective view of the first fixing column and the second clamping seat of the present invention;
FIG. 5 is a schematic perspective view of the structure of the cloth wind-up roll and the first fixing block of the present invention;
FIG. 6 is a perspective view of the first fixing base and the first receiving sleeve according to the present invention;
FIG. 7 is a perspective view of the threaded rod and square barrel of the present invention;
FIG. 8 is a perspective view of the second fixing base and the first fixing base of the present invention;
FIG. 9 is a perspective view of another perspective of the structure of the present invention;
FIG. 10 is a schematic view of a laser irradiation path according to the present invention.
In the figure: 1. a fixed base; 2. a lower fixed seat; 3. a laser generator; 4. a first connecting column; 5. a first connecting sleeve; 6. a first support bar; 7. a first receiving sleeve; 8. a first connecting seat; 9. a threaded sleeve; 10. an elastic member; 11. a second support bar; 12. mirror surface cloth; 13. a laser receiver; 14. a filter lens; 15. a first fixed column; 16. a cloth wind-up roll; 17. a first fixed block; 18. an arc-shaped pawl; 19. a first gear; 20. a torsion spring; 21. a second fixed column; 22. a second card holder; 23. an inner card holder; 24. a first fixed seat; 25. an adjustment wheel; 26. a square cylinder; 27. a holder; 28. a threaded rod; 29. a second fixed seat.
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. 1-10, an embodiment of the present invention is shown:
a perpendicularity detection device for building engineering comprises a perpendicularity detection device body, the perpendicularity detection device body comprises a fixed base 1, a lower fixed base 2 is connected to one end surface of the fixed base 1, a laser generator 3 is hinged to one end surface of the fixed base 1, a first connecting column 4 is connected to one end surface of the lower fixed base 2, a first connecting sleeve 5 is connected to one end surface of the first connecting column 4, a first supporting rod 6 is connected to one end surface of the first connecting sleeve 5, a first bearing sleeve 7 is sleeved on the outer surface of the first supporting rod 6, a tensioning mechanism is connected to one side of the first bearing sleeve 7, a fixing mechanism is connected to the other side surface of the first bearing sleeve 7, a threaded sleeve 9 is connected to one end surface of the first supporting rod 6, an elastic piece 10 is abutted to the inner wall of the threaded sleeve 9, a second supporting rod 11 is abutted to the inner wall of the elastic, one end surface of the second support rod 11 is connected with a laser receiver 13, and one side surface of the laser receiver 13 is connected with a filter lens 14;
the tensioning mechanism comprises a first connecting seat 8, a mirror surface cloth 12, a first fixing column 15, a cloth winding roller 16, a first fixing block 17, an arc-shaped pawl 18, a first gear 19, a torsion spring 20, a second fixing column 21, a second clamping seat 22 and an inner clamping seat 23, wherein the outer surface of the first bearing sleeve 7 is fixedly connected with the first fixing block 17, one side of the first fixing block 17 is fixedly connected with the first connecting seat 8, the inner wall of the first connecting seat 8 is connected with the first gear 19 through a bearing, one side surface of the first gear 19 is fixedly connected with the second fixing column 21, one side outer surface of the second fixing column 21 is connected with the torsion spring 20, one side surface of the second fixing column 21 is fixedly connected with the second clamping seat 22, the outer surface of the second clamping seat 22 is abutted against the first fixing column 15, the inner clamping seat 23 is arranged inside the first fixing column 15, one side outer surface of the first fixing column 15 is abutted against the cloth winding roller 16, and one side surface of the cloth wind-up roll 16 is connected with the mirror surface cloth 12, the inner wall of the first connecting seat 8 is connected with an arc-shaped pawl 18 through an inserted bar, and the mirror surface cloth 12 can be conveniently tensioned and fastened through the tensioning mechanism.
Further, fixed establishment includes first fixing base 24, regulating wheel 25, square barrel 26, holder 27, threaded rod 28 and second fixing base 29, one side surface connection of first bearing sleeve 7 has first fixing base 24, the opposite side surface connection of first bearing sleeve 7 has second fixing base 29, and a side surface connection of second fixing base 29 has holder 27, threaded rod 28 runs through on a side surface of holder 27, one side surface butt of threaded rod 28 has square barrel 26, a side surface connection of threaded rod 28 has regulating wheel 25, through being provided with fixed establishment, can conveniently fix first bearing sleeve 7 in the position on first bracing piece 6 surface.
Furthermore, the outer surface of the first supporting rod 6 is connected with a first bearing sleeve 7 in a sliding mode, the shape structure of the first bearing sleeve 7 is in a half arc shape, and the first bearing sleeve 7 can be conveniently sleeved on the surface of the first supporting rod 6 to be fixed through the outer half arc shape of the shape structure of the first bearing sleeve 7.
Further, the outer surface of the elastic part 10 is provided with threads, the outer surface of the elastic part 10 is connected with the threaded sleeve 9 in a threaded mode, the elastic part 10 can be conveniently fixed through rotating the threaded sleeve 9, and therefore the second supporting rod 11 after extension can be conveniently fixed.
Further, the shape structure of arc pawl 18 is the arc, and arc pawl 18 passes through the bull stick to be connected at the inner wall of first connecting seat 8, sets up to the arc through the shape structure with arc pawl 18, can conveniently make arc pawl 18 carry out the block tooth on first gear 19 surface fixedly.
Further, one end of the torsion spring 20 is connected to the surface of the second fixing column 21, one end of the torsion spring 20 is fixedly connected to the inner wall of the first connecting seat 8, and the torsion spring 20, the second fixing column 21 and the first connecting seat 8 are elastically connected, so that when the mirror surface cloth 12 is stored, the mirror surface cloth 12 is automatically wound on the surface of the cloth winding roller 16 through the elastic force of the torsion spring 20.
Further, the surface shape structure of the inner clamping seat 23 is cross-shaped, the inner wall of the inner clamping seat 23 is in sliding abutting joint with the second clamping seat 22, and the shape structure of the surface of the inner clamping seat 23 is set to be cross-shaped, so that the second clamping seat 22 can be conveniently blocked and limited.
Further, a through groove is formed in the square cylinder 26, a threaded rod 28 is connected to the inner thread of the through groove, and the square cylinder 26 can be conveniently moved along the surface of the threaded rod 28 by connecting the square cylinder 26 and the threaded rod 28 in a threaded manner.
Further, one end of the arc-shaped pawl 18 is connected with a special-shaped fixture block, the special-shaped fixture block is connected with the outer surface of the first gear 19 in a clamping mode, and the working length of the mirror surface cloth 12 can be conveniently fixed by clamping the special-shaped fixture block on the surface of the arc-shaped pawl 18 with the tooth block on the surface of the arc-shaped pawl 18.
The working principle is as follows: when the indoor building wall surface needs to be detected, firstly, one group of detection equipment is placed at one corner of the wall edge, the laser generator 3 is electrified through an external power supply, laser beams can be emitted through the work of the laser generator 3, then, the other group of detection equipment can be placed at the other corner of the wall edge, then, the threaded sleeve 9 can be manually rotated, the working height between the second supporting rod 11 and the first supporting rod 6 can be adjusted through the threaded structure of the surface of the elastic piece 10 and the threaded sleeve 9, meanwhile, the working unfolding area of the mirror surface cloth 12 can be manually adjusted to start the detection of the wall surface, the mirror surface cloth 12 can be manually wound on the surface of the cloth winding roller 16, the cloth winding roller 16 is moved to the inner position of the first connecting seat 8, meanwhile, the first fixing column 15 can be firstly pressed towards the inner part of the cloth winding roller 16, so that one side of the first fixing column 15 is accommodated in the inner part of the cloth winding roller 16, subsequently, after the relative position between the second clamping seat 22 and the surface of the first fixing column 15 is determined, the first fixing column 15 can be manually held, the first fixing column 15 is pulled out, so that the inside of the cloth winding roller 16 is pulled out, at this time, the inner clamping seat 23 inside the first fixing column 15 can be gradually abutted against the surface of the second clamping seat 22, so that the inner clamping seat 23 arranged inside the first fixing column 15 and the outer surface of the second clamping seat 22 can be firmly clamped and fixed, at this time, the arc-shaped pawl 18 can be manually pulled out, then the mirror surface cloth 12 wound on the surface of the cloth winding roller 16 can be pulled to move, so that the cloth winding roller 16 starts to rotate, meanwhile, through the connection between the first fixing column 15 and the second fixing column 21, the first fixing column 15 can drive the second fixing column 21 to synchronously rotate, and through the fixed connection between the second fixing column 21 and the first gear 19, the second fixing column 21 contracting the first gear 19 can be conveniently rotated, at the moment, the second fixing column 21 positioned at the other side of the cloth winding roller 16, the surface of the mirror cloth is fixed with a torsion spring 20, so that the mirror cloth will start to rotate and accumulate force, meanwhile, the worker can manually pull the mirror cloth 12 to the position of the other group of first connecting seats 8, and the cloth wind-up roll 16 inside is fixed on the inner wall of the other group of the first connecting seats 8, at this time, after the fixing of the cloth wind-up roll 16 is completed, the arc-shaped pawl 18 can be manually shifted, so that the arc-shaped pawl 18 is clamped in the clearance of the surface tooth block of the first gear 19, thereby fixing the position of the cloth wind-up roll 16, straightening the mirror surface cloth 12, and reflect laser through mirror surface cloth 12, can effectively increase the pencil that laser produced the refraction, and then can increase the detection efficiency to the straightness that hangs down of wall.
When the verticality of a wall surface at a higher position needs to be detected, the first bearing sleeve 7 can be firstly manually sleeved on the outer surface of the first supporting rod 6, then the first fixing seat 24 and the second fixing seat 29 connected to one side surface of the first bearing sleeve 7 can be manually abutted, then the adjusting wheel 25 connected to the surface of the retainer 27 can be inserted into the first fixing seat 24, the square cylinder 26 connected to one side surface of the adjusting wheel 25 is abutted with the square hole in the first fixing seat 24, after the abutting is finished, the adjusting wheel 25 can be manually rotated, the threaded rod 28 connected to the surface of the adjusting wheel 25 can be synchronously rotated through the rotation of the adjusting wheel 25, meanwhile, the square cylinder 26 sleeved on the surface of the threaded rod 28 can be conveniently moved along the surface of the threaded rod 28 through the threaded structure between the threaded rod 28 and the square cylinder 26, and through the block between square section of thick bamboo 26 and the first fixing base 24 inside, can conveniently make square section of thick bamboo 26 fix the inside at first fixing base 24, thereby can conveniently fasten first bearing sleeve 7, and then can conveniently get off the expansion area to mirror surface cloth 12 according to the altitude condition of actual detection needs at the difference and adjust, and cooperate elastic component 10 and thread bush 9 to adjust the working height of second bracing piece 11 and first bracing piece 6, thereby can make things convenient for the staff to carry out the straightness that hangs down to the wall under the high environment of difference and detect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a straightness check out test set hangs down for building engineering, includes straightness check out test set main part that hangs down, its characterized in that: the verticality detection device comprises a fixed base (1), a lower fixed base (2) is connected to one end surface of the fixed base (1), a laser generator (3) is hinged to one end surface of the fixed base (1), a first connecting column (4) is connected to one end surface of the lower fixed base (2), a first connecting sleeve (5) is connected to one end surface of the first connecting column (4), a first supporting rod (6) is connected to one end surface of the first connecting sleeve (5), a first supporting sleeve (7) is sleeved on the outer surface of the first supporting rod (6), a tensioning mechanism is connected to one side of the first supporting sleeve (7), a fixing mechanism is connected to the other side surface of the first supporting sleeve (7), a threaded sleeve (9) is connected to one end surface of the first supporting rod (6), and an elastic part (10) is abutted to the inner wall of the threaded sleeve (9), the inner wall of the elastic piece (10) is abutted with a second supporting rod (11), one end surface of the second supporting rod (11) is connected with a laser receiver (13), and one side surface of the laser receiver (13) is connected with a filter lens (14);
the tensioning mechanism comprises a first connecting seat (8), a mirror cloth (12), a first fixing column (15), a cloth winding roller (16), a first fixing block (17), an arc-shaped pawl (18), a first gear (19), a torsion spring (20), a second fixing column (21), a second clamping seat (22) and an inner clamping seat (23), wherein the outer surface of the first bearing sleeve (7) is fixedly connected with the first fixing block (17), one side of the first fixing block (17) is fixedly connected with the first connecting seat (8), the inner wall of the first connecting seat (8) is connected with the first gear (19) through a bearing, the surface of one side of the first gear (19) is fixedly connected with the second fixing column (21), the outer surface of one side of the second fixing column (21) is connected with the torsion spring (20), the surface of one side of the second fixing column (21) is fixedly connected with the second clamping seat (22), the outer surface of the second clamping seat (22) is abutted with a first fixing column (15), an inner clamping seat (23) is arranged inside the first fixing column (15), the outer surface of one side of the first fixing column (15) is abutted with a cloth winding roller (16), the surface of one side of the cloth winding roller (16) is connected with a mirror surface cloth (12), and the inner wall of the first connecting seat (8) is connected with an arc-shaped pawl (18) through an inserted link.
2. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: fixed establishment includes first fixing base (24), regulating wheel (25), square barrel (26), holder (27), threaded rod (28) and second fixing base (29), one side surface of first holding sleeve (7) is connected with first fixing base (24), the opposite side surface of first holding sleeve (7) is connected with second fixing base (29), and one side surface of second fixing base (29) is connected with holder (27), threaded rod (28) is run through to one side surface of holder (27), one side surface butt of threaded rod (28) has square barrel (26), one side surface of threaded rod (28) is connected with regulating wheel (25).
3. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: the outer surface of the first supporting rod (6) is connected with a first bearing sleeve (7) in a sliding mode, and the shape structure of the first bearing sleeve (7) is in a half arc shape.
4. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: the outer surface of the elastic piece (10) is provided with threads, and the outer surface of the elastic piece (10) is connected with a thread sleeve (9) in a threaded manner.
5. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: the shape structure of the arc-shaped pawl (18) is arc-shaped, and the arc-shaped pawl (18) is connected to the inner wall of the first connecting seat (8) through a rotating rod.
6. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: one end of the torsion spring (20) is connected to the surface of the second fixing column (21), and one end of the torsion spring (20) is fixedly connected to the inner wall of the first connecting seat (8).
7. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: the surface shape structure of the inner clamping seat (23) is cross-shaped, and the inner wall of the inner clamping seat (23) is in sliding abutting joint with a second clamping seat (22).
8. The perpendicularity detection device for construction engineering according to claim 2, characterized in that: a through groove is formed in the square barrel (26), and a threaded rod (28) is connected to the inner thread of the through groove.
9. The perpendicularity detection device for construction engineering according to claim 1, characterized in that: one end of the arc-shaped pawl (18) is connected with a special-shaped fixture block, and the special-shaped fixture block is connected with the outer surface of the first gear (19) in a clamping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790527.4A CN111912394A (en) | 2020-08-07 | 2020-08-07 | Perpendicularity detection equipment for building engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790527.4A CN111912394A (en) | 2020-08-07 | 2020-08-07 | Perpendicularity detection equipment for building engineering |
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| CN111912394A true CN111912394A (en) | 2020-11-10 |
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| CN202010790527.4A Withdrawn CN111912394A (en) | 2020-08-07 | 2020-08-07 | Perpendicularity detection equipment for building engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697078A (en) * | 2021-02-26 | 2021-04-23 | 河南工业职业技术学院 | Lens surface flatness detection device |
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