CN212776516U - Three-dimensional deformation detection system for crane hook - Google Patents
Three-dimensional deformation detection system for crane hook Download PDFInfo
- Publication number
- CN212776516U CN212776516U CN202021757088.9U CN202021757088U CN212776516U CN 212776516 U CN212776516 U CN 212776516U CN 202021757088 U CN202021757088 U CN 202021757088U CN 212776516 U CN212776516 U CN 212776516U
- Authority
- CN
- China
- Prior art keywords
- frame
- rotating
- rotating frame
- vertical direction
- hook
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to a crane hook three-dimensional deformation detection system, which comprises a three-dimensional scanner capable of scanning the surface of a hook to obtain the three-dimensional value of the surface of the hook, a supporting device arranged on the ground and supporting the three-dimensional scanner, wherein the supporting device comprises a fixed frame arranged on the ground, a rotating frame arranged in the fixed frame and capable of rotating around a vertical line, a rotating frame driving mechanism arranged on the fixed frame and driving the rotating frame to rotate, a horizontal frame connected to the rotating frame in a sliding manner along the vertical direction, and a horizontal frame driving mechanism arranged on the rotating frame and driving the horizontal frame to move along the vertical direction, the three-dimensional scanner is driven to rotate around the hook by the rotating frame, horizontal frame drives three-dimensional scanner and removes along vertical direction simultaneously to carry out a comparatively comprehensive scanning to the lifting hook, need not dismantle the lifting hook and carry out artifical the removal, comparatively convenient effect.
Description
Technical Field
The utility model belongs to the technical field of lifting hook check out test set and specifically relates to a three-dimensional deformation detecting system of crane hook is related to.
Background
The hoist lifting hook is crooked probably appear after long-time use, need regularly carry out the appearance to the lifting hook in order to avoid the lifting hook deformation too big and unsatisfied operation requirement to detect, and the tradition needs to dismantle the lifting hook to the method that the lifting hook detected, then measures through the marking method on special platform, and is comparatively inconvenient, so can directly scan the lifting hook through using three-dimensional scanner now to obtain the comparatively accurate three-dimensional numerical value in lifting hook surface, so that carry out deformation analysis to the lifting hook.
The conventional crane hook three-dimensional deformation detection system with the notice number of CN202880687U comprises a portable three-dimensional scanning system for image scanning of a hook, a PC for processing obtained scanning data, and a portable power supply for supplying power to the three-dimensional scanning system and the PC. The portable three-dimensional scanning system comprises a base with a support, a digital projector which is arranged on the base and emits grating stripes to the lifting hook, two CCD cameras which are arranged on the base and shoot images of the lifting hook, and a PC which is used for carrying out phase processing on the obtained images. The two CCD cameras are respectively positioned at the left side and the right side of the digital projector.
In view of the above-mentioned related technologies, the inventor believes that there is a defect that it is inconvenient to manually rotate the hook as omni-directionally as possible to obtain a more comprehensive three-dimensional value of the surface of the hook in order to obtain more complete data of the surface of the hook during the scanning process.
SUMMERY OF THE UTILITY MODEL
In order to scan the lifting hook surface, the application provides a three-dimensional deformation detection system of crane lifting hook.
The application provides a three-dimensional deformation detecting system of crane hook adopts following technical scheme:
the utility model provides a three-dimensional deformation detecting system of crane hook, includes can scan the three-dimensional scanner in order to obtain the three-dimensional numerical value of lifting hook surface to the lifting hook surface, locate ground and carry out the strutting arrangement who supports three-dimensional scanner, strutting arrangement is including locating the shelf, locate among the shelf and can carry out the pivoted rotating turret around vertical line, locate the shelf and drive rotating turret pivoted rotating turret drive mechanism, along vertical direction sliding connection in the horizontal frame of rotating turret, locate the rotating turret and drive the horizontal frame drive mechanism that the horizontal frame removed along vertical direction.
Through adopting above-mentioned technical scheme, the rotating turret drives three-dimensional scanner and rotates around the lifting hook, and horizontal frame deuterogamies simultaneously and drives three-dimensional scanner and remove along vertical direction for three-dimensional scanner can carry out a comparatively comprehensive scanning to the lifting hook, in order to obtain the comparatively comprehensive three-dimensional numerical value in lifting hook surface, need not dismantle the lifting hook simultaneously and need not artifically rotate the lifting hook and can scan the lifting hook, and is comparatively convenient.
Preferably, the rotating frame driving mechanism comprises a bottom block integrally formed at the lower part of the fixed frame, a rotating rod fixedly connected to the rotating frame and having the same axis as the rotating frame rotating axis, a rotating rod gear coaxially and fixedly connected to the circumferential outer wall of the rotating rod, a rotating frame motor arranged on the bottom block, and a rotating frame motor gear coaxially and fixedly connected to the output shaft of the rotating frame motor and meshed with the rotating rod gear.
Through adopting above-mentioned technical scheme for the rotating turret motor drives the dwang and the rotating turret rotates in step, also can avoid the rotating turret motor output shaft to receive great axial pressure easily, makes the rotating turret motor not fragile relatively.
Preferably, the upper part of the rotating frame is fixedly connected with a horizontal guide circular ring block, the upper part of the fixed frame is fixedly connected with a support circular ring block, and the guide circular ring block is rotatably connected to the support circular ring block around the rotating axis of the rotating frame.
Through adopting above-mentioned technical scheme for the rotating turret obtains better stability at carrying out the pivoted in-process, also can avoid rotating turret upper portion to receive great centrifugal force and make the dwang produce deformation easily at the pivoted in-process, further strengthens overall structure's intensity.
Preferably, horizontal frame area motive mechanism includes fixed connection in the stationary gantry and is vertical screw thread inner tube, runs through respectively along vertical direction one-to-one and sets up two of the vertical both sides of rotating turret and erects the groove, one-to-one respectively fixed connection in two connecting rods at horizontal frame length direction both ends, inner wall fixed connection in two connecting rods be close to one end and outer wall threaded connection in the screw thread outer tube of screw thread inner tube inner wall mutually, two connecting rods wear to locate two respectively and erect and move groove and connecting rod along vertical direction sliding connection in erectting and moving the groove.
Through adopting above-mentioned technical scheme, the rotating turret drives two connecting rods and revolutes the axis rotation of rotating rod for fixed connection rotates in the lump in the screw thread inner tube of connecting rod, makes then the screw thread inner tube remove along vertical direction, drives connecting rod and horizontal frame and removes along vertical direction in the lump, makes also can remove in the lump along vertical direction in the pivoted horizontal frame, need not set up extra power supply for horizontal frame removes along vertical direction again.
Preferably, both sides of each connecting rod all rotate and are connected with the guide pulley, and the vertical inner wall in each vertical groove all sets up along vertical direction and supplies the guide pulley to carry out the guide pulley groove of roll connection along vertical direction.
Through adopting above-mentioned technical scheme for the connecting rod with erect the wearing and tearing between the groove less relatively, avoid carrying out vertical direction's removal simultaneously at the pivoted in-process and can lead to the connecting rod side great wearing and tearing to appear.
Preferably, the upper end and the lower end of the vertical moving groove are fixedly connected with abutting blocks, facing the side face of the connecting rod, of which the rubber layers are arranged.
Through adopting above-mentioned technical scheme for the connecting rod can not make also can make when supporting between piece and the connecting rod along vertical direction removal excessively simultaneously, the connecting rod can not have great impact and damage between the piece.
Preferably, decide frame upper portion and be equipped with the external diameter and be less than horizontal frame length direction and supply the protection drum that the lifting hook stretched into, the upper end height of protection drum is higher than the upper portion height of deciding the frame, decides the frame and is equipped with the protection drum drive mechanism that drives the protection drum and carry out the removal along vertical direction.
Through adopting above-mentioned technical scheme for be difficult for when the lifting hook along vertical direction immigration to the rotating turret in bumping with the three-dimensional scanner, avoid the three-dimensional scanner to take place to damage easily.
Preferably, the protection cylinder driving mechanism comprises a plurality of driving rods fixedly connected to the outer wall of the protection cylinder and a plurality of hydraulic cylinders arranged on the upper portion of the fixed frame, the power rods of each hydraulic cylinder are respectively and fixedly connected to each driving rod in a one-to-one correspondence manner, an upper opening of the protection cylinder is fixedly connected with an entering hopper communicated with each other, and the inner diameter of the upper opening of the entering hopper is larger than that of the protection cylinder.
Through adopting above-mentioned technical scheme, the pneumatic cylinder drives the protection drum and removes along vertical direction for the protection drum can not cause in the working process that three-dimensional scanner carries out the scanning and block, gets into simultaneously and fights and make the lifting hook get into to the protection drum more easily.
In summary, the present application includes at least one of the following benefits:
the rotating frame drives the three-dimensional scanner to rotate around the lifting hook, and meanwhile, the horizontal frame is matched with the lifting hook to drive the three-dimensional scanner to move in the vertical direction, so that the three-dimensional scanner can perform comprehensive scanning on the lifting hook to obtain comprehensive three-dimensional values on the surface of the lifting hook, and meanwhile, the lifting hook can be scanned without being disassembled, namely, the lifting hook can be scanned without manually rotating the lifting hook, and the lifting hook is convenient;
the pneumatic cylinder drives the protection drum and moves along vertical direction for the protection drum can not cause in the working process that three-dimensional scanner carries out the scanning and block, gets into simultaneously and fights and make the lifting hook get into to the protection drum more easily.
Drawings
FIG. 1 is a main structure view of the present invention;
FIG. 2 is a cross-sectional view of half of the circumferential sides of the outer cylinder and the inner cylinder of the threaded outer cylinder to show the internal structure of the threaded inner cylinder;
fig. 3 is a schematic structural view of a vertical section of the turret for showing the guide wheel groove.
Description of reference numerals: 1. a three-dimensional scanner; 11. driving the rod; 12. a hydraulic cylinder; 13. entering a hopper; 2. a support device; 21. supporting the ring block; 22. a threaded inner barrel; 23. a threaded outer cylinder; 24. vertically moving the groove; 25. a connecting rod; 26. a guide wheel; 27. a guide wheel groove; 28. a resisting block; 29. a protective cylinder; 3. fixing a frame; 31. a rotating frame; 32. a horizontal frame; 34. a bottom block; 35. rotating the rod; 36. rotating the shaft gear; 37. a turret motor; 38. a turret motor gear; 39. and guiding the circular ring block.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses hoist lifting hook three-dimensional deformation detecting system, refer to fig. 1 and 2, including three-dimensional scanner 1 that can carry out surface scanning to the lifting hook, three-dimensional scanner 1 does not connect the cable, and the ground of lifting hook below is installed and is supplied three-dimensional scanner to install fixed strutting arrangement 2.
Referring to fig. 1 and 2, the supporting device 2 includes a fixed frame 3 placed on the ground, a vertical rotating frame 31 is installed in the fixed frame 3, a rotating frame driving mechanism capable of driving the rotating frame 31 to rotate around a vertical line is installed on the fixed frame 3, a rotating axis of the rotating frame 31 passes through a central point of the rotating frame 31, a horizontal frame 32 is connected between two adjacent vertical two side faces of the rotating frame 31 in a sliding mode along the vertical direction, two ends of the length direction of the horizontal frame 32 are close to the two vertical sections of the rotating frame 31 respectively, a lifting hook can penetrate through an opening of the horizontal frame 32 along the vertical direction, the three-dimensional scanner 1 is installed on the upper surface of one end of the length direction of the horizontal frame 32, and the rotating frame 31 is provided with a horizontal frame driving mechanism capable of driving the horizontal frame 32 to move along the vertical direction.
Referring to fig. 1 and 2, the rotating frame driving mechanism includes a bottom block 34 integrally formed at the lower portion of the fixed frame 3 and having a horizontal upper surface, the upper surface of the bottom block 34 is rotatably connected with a vertical rotating rod 35, the rotating axis of the rotating rod 35 is the same as the rotating axis of the rotating frame 31, the upper end of the rotating rod 35 is fixedly connected to the lower surface of the rotating frame 31, the upper surface of the bottom block 34 is fixedly connected with a rotating frame motor 37, the output shaft of the rotating frame motor 37 is coaxially and fixedly connected with a rotating frame motor gear 38, the circumferential outer wall of the rotating rod 35 is coaxially and fixedly connected with a rotating rod gear 36 meshed with the rotating frame motor gear 38, the upper portion of the rotating frame 31 is fixedly connected with a guide ring block 39 having a horizontal end, the axis of the guide ring block 39 is the same as the rotating axis of the rotating frame 31, the upper portion of the fixed frame 3 is fixedly connected with a support ring block 21 having a horizontal end.
Referring to fig. 2 and 3, the horizontal frame driving mechanism includes two vertical moving slots 24 respectively penetrating two vertical adjacent side surfaces of the rotating frame 31 in a one-to-one correspondence along the vertical direction, two ends of the horizontal frame 32 in the length direction are fixedly connected with connecting rods 25 whose length direction is parallel to the length direction of the horizontal frame 32, the two connecting rods 25 are respectively inserted into the two vertical moving slots 24, two adjacent vertical side surfaces of each vertical moving slot 24 are respectively provided with guide wheel slots 27 along the vertical direction, two vertical side surfaces of each connecting rod 25 in the length direction are respectively and rotatably connected with guide wheels 26 whose end surfaces are vertical, two guide wheels 26 of the same connecting rod 25 are respectively and rotatably connected with two guide wheel slots 27 of the same vertical moving slot 24, two upper and lower ends of the vertical moving slot 24 are respectively and fixedly connected with abutting blocks 28, two adjacent side surfaces of two abutting blocks 28 of the same vertical moving slot 24 are respectively bonded with a rubber layer, so that there is no large impact between the connecting rod, the opposite ends of the two connecting rods 25 are fixedly connected with the same threaded outer cylinder 23, the axis of the threaded outer cylinder 23 is the same as the rotation axis of the rotating frame 31, and the fixed frame 3 is fixedly connected with a threaded inner cylinder 22 of which the inner wall is in threaded connection with the outer wall of the threaded outer cylinder 23.
Referring to fig. 1, the same protection drum 29 of axis and rotating turret 31 axis of rotation is installed along vertical direction on deciding frame 3 upper portion, protection drum 29 can supply the lifting hook to get into along vertical direction, the entering fill 13 that the coaxial fixedly connected with in protection drum 29 upper end is linked together, the upper portion opening internal diameter that gets into fill 13 is greater than the internal diameter of protection drum 29, decide frame 3 and install the protection drum drive mechanism that drives protection drum 29 and carry out the removal along vertical direction, protection drum drive mechanism is including revolving the even fixed connection of rotating turret 31 axis of rotation several pneumatic cylinder 12 on deciding frame 3 upper portion, the equal fixedly connected with one in power rod upper end of each pneumatic cylinder 12 is horizontally drive rod 11, drive rod 11 keeps away from pneumatic cylinder 12 one end fixed connection in the circumference outer wall of protection drum 29.
The implementation principle of the crane hook three-dimensional deformation detection system provided by the embodiment of the application is as follows: the fixed frame 3 is moved to the lower portion of the lifting hook, then the lifting hook is descended to enable the lifting hook to enter the protection cylinder 29 through the entering hopper 13, meanwhile, a steel wire rope connected with the lifting hook is vertical, then the hydraulic cylinder 12 is started, the protection cylinder 29 is enabled to ascend until the bottom of the protection cylinder 29 is far away from the upper portion of the fixed frame 3, then the rotating frame motor 37 and the three-dimensional scanner 1 are started, the rotating rod 35 and the rotating frame 31 are enabled to rotate around the axis of the rotating rod 35, the rotating frame 31 drives the connecting rod 25 and the threaded outer cylinder 23 to rotate synchronously, the threaded matching between the threaded outer cylinder 23 and the threaded inner cylinder 22 enables the threaded inner cylinder 22 to move in the vertical direction, then the connecting rod 25 and the horizontal frame 32 move in the vertical direction, and the three-dimensional scanner 1 can move in the vertical direction while.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a three-dimensional deformation detecting system of crane hook, includes three-dimensional scanner (1) that can scan in order to obtain hook surface three-dimensional numerical value to the hook surface, locates ground and carries out strutting arrangement (2) that support three-dimensional scanner (1), its characterized in that: the supporting device (2) comprises a fixed frame (3) arranged on the ground, a rotating frame (31) which is arranged in the fixed frame (3) and can rotate around a vertical line, a rotating frame driving mechanism which is arranged in the fixed frame (3) and drives the rotating frame (31) to rotate, a horizontal frame (32) which is connected to the rotating frame (31) in a sliding mode along the vertical direction, and a horizontal frame driving mechanism which is arranged in the rotating frame (31) and drives the horizontal frame (32) to move along the vertical direction.
2. The crane hook three-dimensional deformation detection system according to claim 1, wherein: the rotating frame driving mechanism comprises a bottom block (34) which is integrally formed at the lower part of the fixed frame (3), a rotating rod (35) which is fixedly connected to the rotating frame (31) and has the same axis as the rotating frame (31) in rotating axis, a rotating rod gear (36) which is coaxially and fixedly connected to the outer wall of the circumference of the rotating rod (35), a rotating frame motor (37) which is arranged on the bottom block (34), and a rotating frame motor gear (38) which is coaxially and fixedly connected to the output shaft of the rotating frame motor (37) and is meshed with the rotating rod gear (36).
3. The crane hook three-dimensional deformation detection system according to claim 2, wherein: the upper portion of the rotating frame (31) is fixedly connected with a horizontal guide circular ring block (39), the upper portion of the fixed frame (3) is fixedly connected with a supporting circular ring block (21), and the guide circular ring block (39) is rotatably connected to the supporting circular ring block (21) around the rotating axis of the rotating frame (31).
4. The crane hook three-dimensional deformation detection system according to claim 3, wherein: horizontal frame area motive mechanism includes fixed connection in deciding frame (3) and be vertical screw thread inner tube (22), run through respectively along vertical direction one-to-one and set up two of the vertical both sides of rotating turret (31) and erect groove (24), one-to-one respectively two connecting rods (25) of fixed connection in horizontal frame (32) length direction both ends, inner wall fixed connection is in screw thread urceolus (23) of the close one end of two connecting rods (25) and outer wall threaded connection in screw thread inner tube (22) inner wall, two connecting rods (25) are worn to locate two respectively and are erected and move groove (24) and connecting rod (25) and move groove (24) along vertical direction sliding connection in erectting.
5. The crane hook three-dimensional deformation detection system according to claim 4, wherein: the two sides of each connecting rod (25) are rotatably connected with guide wheels (26), and the vertical inner wall of each vertical moving groove (24) is provided with a guide wheel groove (27) for the guide wheels (26) to be in rolling connection along the vertical direction.
6. The crane hook three-dimensional deformation detection system according to claim 5, wherein: the upper end and the lower end of the vertical moving groove (24) are fixedly connected with abutting blocks (28) which are provided with rubber layers and face the side face of the connecting rod (25).
7. The crane hook three-dimensional deformation detection system according to claim 6, wherein: decide frame (3) upper portion and be equipped with protection drum (29) that the external diameter is less than horizontal frame (32) length direction and supply the lifting hook to stretch into, the upper end height that highly is higher than the upper portion height of deciding frame (3) of protection drum (29), decides frame (3) and is equipped with the protection drum drive mechanism that drives protection drum (29) and remove along vertical direction.
8. The crane hook three-dimensional deformation detection system according to claim 7, wherein: protection drum drive mechanism includes several drive rods (11) of fixed connection in protection drum (29) outer wall, locates and decides frame (3) upper portion several pneumatic cylinder (12), and the power rod one-to-one of each pneumatic cylinder (12) is fixed connection in each drive rod (11) respectively, and the upper portion opening fixedly connected with of protection drum (29) is linked together gets into fill (13), and the upper portion opening internal diameter that gets into fill (13) is greater than the internal diameter of protection drum (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757088.9U CN212776516U (en) | 2020-08-20 | 2020-08-20 | Three-dimensional deformation detection system for crane hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757088.9U CN212776516U (en) | 2020-08-20 | 2020-08-20 | Three-dimensional deformation detection system for crane hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212776516U true CN212776516U (en) | 2021-03-23 |
Family
ID=75052307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021757088.9U Expired - Fee Related CN212776516U (en) | 2020-08-20 | 2020-08-20 | Three-dimensional deformation detection system for crane hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212776516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701593A (en) * | 2021-08-27 | 2021-11-26 | 浙江欧迪恩传动科技股份有限公司 | Three-pivot universal joint ball track detection assembly line |
-
2020
- 2020-08-20 CN CN202021757088.9U patent/CN212776516U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701593A (en) * | 2021-08-27 | 2021-11-26 | 浙江欧迪恩传动科技股份有限公司 | Three-pivot universal joint ball track detection assembly line |
| CN113701593B (en) * | 2021-08-27 | 2024-05-03 | 浙江欧迪恩传动科技股份有限公司 | Three-pivot universal joint ball way detection assembly line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112924463B (en) | Coal mine shaft inspection device and laser scanning defect detection method | |
| CN212776516U (en) | Three-dimensional deformation detection system for crane hook | |
| CN202372457U (en) | X-ray flaw detector-based tire appearance detection system | |
| CN108759717A (en) | A kind of comprehensive spatial digitizer of acquisition | |
| CN110108233B (en) | Three-dimensional scanner for 3D printing | |
| CN209129608U (en) | Vertical shaft maintenance balladeur train | |
| CN115549404B (en) | Imaging inspection device for stator and rotor of hydraulic generator and maintenance method of hydraulic generator | |
| CN210863582U (en) | Water heater inner container detection system | |
| RU119031U1 (en) | UNIT FOR PERFORMING VERTICAL BARKS OF MOUNTAIN ENTERPRISES AND INSTALLATION OF WATERPROOF MOUNTING FASTENERS | |
| CN211081852U (en) | Three-dimensional logging device of quick collection | |
| CN213148774U (en) | Endoscope device for high-pressure gas storage bottle | |
| CN114088724A (en) | Display screen edge defect detection device | |
| CN110346383A (en) | Water heater inner container detection system | |
| CN112345536A (en) | Pumped storage power station inclined shaft tunnel appearance inspection measuring device and arrangement method | |
| CN214472827U (en) | Nondestructive testing device for pier stud | |
| CN115655370A (en) | Full-section cable channel detection robot | |
| CN218822095U (en) | Depth measurement monitoring device for sonar scanning of bridge underwater foundation diseases | |
| CN113789844A (en) | Drainage pipeline inspection well construction quality detection equipment and use method thereof | |
| CN112173658B (en) | Nondestructive testing system for battery car wheel hub | |
| CN214252197U (en) | Surface inspection and flaw detection device for large mechanical parts | |
| CN213207216U (en) | Acquisition device for three-dimensional portrait intelligent identification and comparison system | |
| CN218665155U (en) | High-strength winding drum for ship unloader | |
| CN113670227B (en) | Hand-held high-precision three-dimensional scanning measuring device | |
| CN221475554U (en) | Concrete sample preparation vibrating device | |
| CN215666827U (en) | Fixed hoist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |