CN113124780A - Three-dimensional laser scanner for engineering survey - Google Patents
Three-dimensional laser scanner for engineering survey Download PDFInfo
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- CN113124780A CN113124780A CN202110369955.4A CN202110369955A CN113124780A CN 113124780 A CN113124780 A CN 113124780A CN 202110369955 A CN202110369955 A CN 202110369955A CN 113124780 A CN113124780 A CN 113124780A
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- dimensional laser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
- G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
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- Computer Vision & Pattern Recognition (AREA)
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- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the technical field of engineering measurement, in particular to a three-dimensional laser scanner for engineering measurement, which comprises a three-dimensional laser scanner body, a base, a tripod and a lithium battery, wherein the three-dimensional laser scanner body is rotatably arranged at the upper end of the base; the upper surface of the base is rotatably provided with a turntable, the upper surface of the turntable is fixedly provided with a three-dimensional laser scanner body, and the lower surface of the turntable is fixedly provided with an annular rack; the outer wall of base is pegged graft and is had power connection, is connected with the power cord between power connection and the three-dimensional laser scanner organism, and power connection all with second motor, second speed sensor electric connection.
Description
Technical Field
The invention relates to the technical field of engineering measurement, in particular to a three-dimensional laser scanner for engineering measurement.
Background
The three-dimensional laser scanning technology is a new technology appearing in recent years, and is attracting more and more attention in the research field in China. The method utilizes the principle of laser ranging, and can quickly reconstruct a three-dimensional model of a measured object and various drawing data such as lines, surfaces, bodies and the like by recording information such as three-dimensional coordinates, reflectivity, textures and the like of a large number of dense points on the surface of the measured object. Since the three-dimensional laser scanning system can densely acquire a large number of data points of the target object, the three-dimensional laser scanning technology is also referred to as a revolutionary technical breakthrough that evolves from single-point measurement to surface measurement, compared to the conventional single-point measurement.
The three-dimensional laser scanning system mainly comprises a three-dimensional laser scanner, a computer, a power supply system, a bracket and system supporting software. The three-dimensional laser scanner is used as a main component of a three-dimensional laser scanning system, comprises a laser emitter, a receiver, a time counter, a motor-controlled rotatable filter, a control circuit board, a microcomputer, a CCD (charge coupled device) machine, software and the like, and is a technical revolution following the GPS technology in the field of surveying and mapping. The method breaks through the traditional single-point measurement method and has the unique advantages of high efficiency and high precision. The three-dimensional laser scanning technology can provide three-dimensional point cloud data of the surface of a scanned object, and therefore, the three-dimensional laser scanning technology can be used for obtaining a high-precision high-resolution digital terrain model.
For example, the utility model of chinese patent No. 201720093596.3 discloses a three-dimensional laser scanner. The three-dimensional laser scanner includes a platform sling, a housing, and a scanning system. The platform sling can hang three-dimensional laser scanner for three-dimensional laser scanner can scan the region that is located three-dimensional laser scanner below, has solved the problem of vertical three-dimensional laser scanner's scanning blind area. Meanwhile, the housing includes a housing frame, a hanger plate, and a plurality of panels, the hanger plate, the plurality of panels being detachably mounted on the housing frame. The three-dimensional laser scanner of the utility model only needs to disassemble one of the panels from the shell frame in the later maintenance process, has simple structure, convenient disassembly or assembly and low cost; however, the utility model still has some disadvantages, such as: the motor drives the filter to rotate for 360 degrees continuously, and the filter only scans an external object in a half cycle in the process of rotating for one cycle, so that the scanning efficiency is low, and the time consumption is long.
Disclosure of Invention
The present invention is directed to a three-dimensional laser scanner for engineering survey to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a three-dimensional laser scanner for engineering survey, includes three-dimensional laser scanner organism (1), base (2), tripod (3) and lithium cell (4), its characterized in that: the three-dimensional laser scanner body (1) is rotatably mounted at the upper end of the base (2), the tripod (3) is fixedly mounted at the bottom end of the base (2), and the three-dimensional laser scanner body (1) is powered by the lithium battery (4);
the three-dimensional laser scanner body (1) includes a housing (101), a laser radar (102), a first speed sensor (104), a first motor (105), a panoramic camera (106), a time counter (107), and a central processing unit (108), wherein: the laser radar (102) is arranged right and left opposite to the filter lens (103), a rotating shaft (109) is fixed on the right side wall of the filter lens (103), and a driving wheel (110) is fixed at the right end of the rotating shaft (109); a circular groove (111) is formed in the left side wall of the driving wheel (110), an arc-shaped rack (112) is fixed on the annular inner wall of the circular groove (111), a first incomplete gear (113) is fixed at the center of the circular groove (111), a second incomplete gear (114) is fixed at the output end of the first motor (105), and the second incomplete gear (114) is in meshing connection with the driving wheel (110); the first motor (105) is used for driving the filter (103) to rotate so as to control laser emitted by the laser radar (102) to move in the vertical direction and vertically scan a measured object, the first speed sensor (104) is connected with the first motor (105) and records rotation parameter information of the first motor, the panoramic camera (106) converts a panoramic image into a panoramic spherical point cloud according to a central projection imaging principle, corresponding control points are established on the panoramic image and the three-dimensional laser scanning point cloud, and the time counter (107) is used for recording time information; the laser radar (102), the filter (103), the first speed sensor (104), the first motor (105), the panoramic camera (106), the time counter (107) and the central processing unit (108) are controlled by the central processing unit (108) and are arranged in the shell (101);
a turntable (201) is rotatably mounted on the upper surface of the base (2), the three-dimensional laser scanner body (1) is fixedly mounted on the upper surface of the turntable (201), an annular rack (202) is fixed on the lower surface of the turntable (201), and a mounting groove (203) is further formed in the upper surface of the base (2); a second motor (204) and a second speed sensor (205) are mounted inside the mounting groove (203), a driving gear (206) is fixed at the output end of the second motor (204), the driving gear (206) is meshed and connected with the annular rack (202), and the second speed sensor (205) is connected with the second motor (204) and records the rotation parameter information of the second motor; the outer wall of the base (2) is inserted with a power connector (207), a power line (208) is connected between the power connector (207) and the three-dimensional laser scanner body (1), and the power connector (207) is electrically connected with the second motor (204) and the second speed sensor (205).
In the scheme, a central rod (306) is fixed on the lower surface of the base (2), three pull rods (307) are hinged to the outer wall of the central rod (306), and the three pull rods (307) are respectively connected with the three support frames (301) through hinges.
In the scheme, a thread groove is formed in the outer wall of the bottom end of the ground nail (305), and a protective cover (308) is installed on the outer wall of the bottom end of the ground nail (305) in a threaded mode.
In the scheme, the tripod (3) comprises three support frames (301) hinged to the bottom end face of the base (2), the outer wall of the bottom end of each support frame (301) is sleeved with a sliding sleeve (302), and the left side wall and the right side wall of each sliding sleeve (302) are respectively provided with a fixed knob (303) in a threaded manner; an expansion rod (304) is fixed at the bottom end of the sliding sleeve (302), and a ground nail (305) is fixed at the bottom end of the expansion rod (304); the upper half circle of the tooth rotation of the second incomplete gear (114) is meshed with the arc-shaped rack (112), and the lower half circle of the tooth rotation of the second incomplete gear (114) is meshed with the tooth of the first incomplete gear (113).
In the scheme, a pair of handles (122) is fixed on the upper end face of the machine shell (101), and anti-skid grains are arranged on the outer walls of the handles (122).
In the scheme, a glass level bubble (209) is embedded in the upper surface of the base (2), and the precision of the glass level bubble (209) is 30' and can rotate around the axis to keep the accuracy.
The beneficial effects are as follows:
firstly, the invention sets a circular groove on the left side wall of the driving wheel, an arc rack is fixed on the ring inner wall of the circular groove, the center of the circular groove is fixed with a first incomplete gear, a first motor is electrified to drive a second incomplete gear to rotate clockwise, wherein the upper half circle of the tooth rotation of the second incomplete gear is meshed with the arc rack, thus driving the driving wheel to rotate 180 degrees clockwise, the lower half circle of the tooth rotation of the second incomplete gear is meshed with the tooth of the first incomplete gear, thus driving the driving wheel to rotate 180 degrees anticlockwise, in conclusion, the first motor is electrified to drive the driving wheel to rotate 180 degrees back and forth, the driving wheel is fixed with a filter lens through a rotating shaft, further driving the filter lens to rotate 180 degrees back and forth, the filter lens can expand the light emitted by the laser radar into a light strip in one direction and project on the surface of an object, because of the change of the curvature or, the light strip is deformed, and the panoramic camera captures the graph of the deformed light strip, so that the distance or position data of a measured point can be obtained through a triangular geometric relation by the emission angle of the laser beam and the imaging position of the laser beam in the panoramic camera, the filter lens rotates back and forth for 180 degrees and then is combined with the three-dimensional laser scanner body to rotate horizontally, the scanning speed is greatly improved, the scanning time is saved, meanwhile, the horizontal rotation speed can be adjusted, the back and forth scanning on the same vertical plane is realized, and the scanning accuracy can be greatly improved by combining the scanning results of two times.
According to the invention, the annular rack is fixed on the lower surface of the rotary table, the upper surface of the base is also provided with the mounting groove, the second motor and the second speed sensor are mounted inside the mounting groove, the output end of the second motor is fixed with the driving gear, the upper surface of the base is rotatably provided with the rotary table, the annular rack is fixed on the lower surface of the rotary table, and the driving gear is meshed with the annular rack, so that the second motor can drive the dimensional laser scanner body to rotate in a horizontal plane after being electrified, 360-degree scanning on the surrounding environment can be realized, various drawing data such as a three-dimensional model, a line, a surface and a body can be obtained, and the upper surface of the base is embedded with the glass level bubble, thereby being convenient for judging whether the three-dimensional laser scanner is in a horizontal state, errors of scanning results can be effectively reduced, and the manufacturing cost of the.
Drawings
FIG. 1 is a perspective view of a first aspect of the present invention;
FIG. 2 is a perspective view of the present invention from a second perspective;
FIG. 3 is a first perspective view of the three-dimensional laser scanner body of the present invention;
FIG. 4 is a first perspective view of the three-dimensional laser scanner body of the present invention;
fig. 5 is a schematic view of the internal structure of the three-dimensional laser scanner body according to the present invention;
FIG. 6 is a schematic view of the structure of the driving wheel and its peripheral components in the present invention;
FIG. 7 is a front view of the base of the present invention;
FIG. 8 is an exploded view of the base of the present invention;
FIG. 9 is a schematic view of a tripod according to the present invention;
fig. 10 is an exploded view of the base according to embodiment 2 of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
Referring to fig. 1-6, an embodiment of the present invention is shown: a three-dimensional laser scanner for engineering measurement comprises a three-dimensional laser scanner body 1, a base 2, a tripod 3 and a lithium battery 4, wherein the three-dimensional laser scanner body 1 is rotatably mounted at the upper end of the base 2, the tripod 3 is fixedly mounted at the bottom end of the base 2, and the three-dimensional laser scanner body 1 is powered by the lithium battery 4;
the three-dimensional laser scanner body 1 includes a housing 101, a laser radar 102, a filter 103, a first speed sensor 104, a first motor 105, a panoramic camera 106, a time counter 107, and a central processor 108; the laser radar 102 and the filter 103 are arranged right and left, a rotating shaft 109 is fixed on the right side wall of the filter 103, a driving wheel 110 is fixed at the right end of the rotating shaft 109, a circular groove 111 is formed in the left side wall of the driving wheel 110, an arc-shaped rack 112 is fixed on the annular inner wall of the circular groove 111, a first incomplete gear 113 is fixed at the center position of the circular groove 111, a second incomplete gear 114 is fixed at the output end of a first motor 105, the second incomplete gear 114 is meshed and connected with the driving wheel 110, the first motor 105 is used for driving the filter 103 to rotate so as to control laser emitted by the laser radar 102 to move in the vertical direction and vertically scan an object to be measured, a first speed sensor 104 is connected with the first motor 105 and records the rotating parameter information thereof, a panoramic point cloud camera 106 converts a panoramic image into a panoramic spherical surface cloud according to the central projection imaging principle, and establishes a corresponding control point on the panoramic, the time counter 107 is used for recording time information; the laser radar 102, the filter 103, the first speed sensor 104, the first motor 105, the panoramic camera 106, the time counter 107 and the central processor 108 are all controlled by the central processor 108 and are installed inside the casing 101, a battery cavity 115 is also arranged inside the casing 101, and the lithium battery 4 is installed inside the battery cavity 115; the right side wall of the casing 101 is provided with a display 116 and a control panel 117, the display 116 and the control panel 117 are electrically connected, and the left side wall of the casing 101 is provided with a heat dissipation window 118; the upper half circle of the tooth rotation of the second incomplete gear 114 is meshed with the arc-shaped rack 112, and the lower half circle of the tooth rotation of the second incomplete gear 114 is meshed with the tooth of the first incomplete gear 113; the three-dimensional laser scanner body 1 further comprises a wireless communication module 119 and a storage module 120 inside, the wireless communication module 119 is communicated with an external computer through a wireless network, the storage module 120 is used for recording scanned information and storing integrated sensors 121 inside the three-dimensional laser scanner body 1, the integrated sensors 121 comprise a double-shaft compensator, a height sensor, a compass and a GNSS inside, the double-shaft compensator performs horizontal calibration on each scanning, the precision is 19 arc seconds, the error range is +/-2 degrees, the height sensor can measure the height relative to a fixed point through an electronic barometer and adds the height to the scanning, the compass is used for indicating the scanning direction, and the GPS and GLONASS are integrated inside the GNSS; the interior of the laser radar 102 comprises a laser transmitter, an antenna, a receiver and a tracking frame, wherein the wavelength of the laser transmitter is 1550nm, the beam divergence angle of the laser transmitter is 0.3mrad, and the emergent beam of the laser transmitter is 2.12 nm; a pair of handles 122 is fixed on the upper end surface of the casing 101, anti-slip patterns are formed on the outer wall of the handles 122, and the handles 122 are convenient to arrange.
Referring to fig. 1, 7 and 8, a turntable 201 is rotatably mounted on the upper surface of a base 2, a three-dimensional laser scanner body 1 is fixedly mounted on the upper surface of the turntable 201 through bolts, an annular rack 202 is fixed on the lower surface of the turntable 201, a mounting groove 203 is further formed in the upper surface of the base 2, a second motor 204 and a second speed sensor 205 are mounted inside the mounting groove 203, a pinion 206 is fixed on an output end of the second motor 204, the pinion 206 is in meshing connection with the annular rack 202, and the second speed sensor 205 is connected with the second motor 204 and records rotation parameter information thereof; a power connector 207 is inserted into the outer wall of the base 2, a power cord 208 is connected between the power connector 207 and the three-dimensional laser scanner body 1, and the power connector 207 is electrically connected with the second motor 204 and the second speed sensor 205
Referring to fig. 1 and 9, the tripod 3 includes three support frames 301 hinged to the bottom end face of the base 2, a sliding sleeve 302 is sleeved on the outer wall of the bottom end of each support frame 301, fixing knobs 303 are installed on the left and right side walls of the sliding sleeve 302 in a threaded manner, a telescopic rod 304 is fixed at the bottom end of the sliding sleeve 302, ground nails 305 are fixed at the bottom ends of the telescopic rods 304, threaded grooves are formed in the outer wall of the bottom ends of the ground nails 305, protective covers 308 are installed on the outer wall of the bottom ends of the ground nails 305 in a threaded manner, and the protective covers 308 can prevent potential safety hazards caused by the fact that the ground; the lower surface of base 2 is fixed with well core rod 306, and well core rod 306's outer wall articulates there are three pull rods 307, and three pull rods 307 respectively with three support frame 301 between be connected through the articulated elements to support frame 301 is convenient for expand or accomodate.
The working principle of the embodiment is as follows: the laser scanning device comprises a three-dimensional laser scanner, a first motor 105, a filter 103, a second motor 204, a first speed sensor 104, a second speed sensor 205, a second motor 204, a third motor 105, a third motor 204, a fourth motor 105, a fourth motor 204, a fifth motor 105, a sixth motor 204, a sixth motor 105, a sixth motor 204, a fourth motor 105, a fifth motor 204, a sixth motor, a fourth motor, a sixth motor, a fourth motor, a sixth motor, thus, the distance or position data of the measured point can be obtained through a triangular geometric relationship by the emitting angle of the laser beam and the imaging position of the laser beam in the panoramic camera 106, the panoramic camera 106 can convert the panoramic image into a panoramic spherical point cloud according to the central projection imaging principle, corresponding control points are established on the panoramic image and the three-dimensional laser scanning point cloud, and a three-dimensional model of the measured object and various image data such as lines, surfaces, bodies and the like can be quickly reconstructed by recording information such as three-dimensional coordinates, reflectivity, texture and the like of a large number of dense points on the surface of the measured object; finally, the data are processed by the central processing unit 108 and then directly stored in the inner wall of the storage module 120, the three-dimensional laser scanner body 1 further comprises a wireless communication module 119 inside, the wireless communication module 119 is communicated with an external computer through a wireless network, ILRIS-3D software can be installed inside the computer, and the software has the functions of three-dimensional image point cloud data editing, scanning data splicing and merging, image data point three-dimensional space measurement, point cloud influence visualization, spatial data three-dimensional modeling and texture analysis processing.
In this embodiment, a rotation shaft 109 is fixed on the right side wall of the optical filter 103, a transmission wheel 110 is fixed at the right end of the rotation shaft 109, a circular groove 111 is formed on the left side wall of the transmission wheel 110, an arc-shaped rack 112 is fixed on the annular inner wall of the circular groove 111, a first incomplete gear 113 is fixed at the center position of the circular groove 111, a second incomplete gear 114 is fixed at the output end of the first motor 105, the first motor 105 is energized to drive the second incomplete gear 114 to rotate clockwise, wherein the upper half of the rotation of the teeth of the second incomplete gear 114 is meshed with the arc-shaped rack 112, which can drive the transmission wheel 110 to rotate 180 ° clockwise, the lower half of the rotation of the teeth of the second incomplete gear 114 is meshed with the teeth of the first incomplete gear 113, which can drive the transmission wheel 110 to rotate 180 ° counterclockwise, and the first motor 105 is energized to drive the transmission wheel 110 to rotate back and forth 180 °, and forth, and the transmission wheel, and then can drive the optical filter 103 to make 180 degrees of round trip rotations, can obtain the distance or position data of the measured point through the triangular geometric relation, the optical filter 103 makes 180 degrees of round trip rotations and then makes horizontal rotations in combination with the three-dimensional laser scanner body 1, great improvement the speed of scanning, saved the scanning time, still can adjust horizontal rotation speed simultaneously, realize carrying on the round trip scanning in the same vertical plane, and the result of the two-time scanning of the combination, can improve the accuracy of scanning greatly.
Example 2
In example 1, as shown in fig. 1 and 10, a glass vial 209 is fitted to the upper surface of the base 2, and the glass vial 209 has a precision of 30' and can be rotated around the axis to maintain the precision.
This embodiment is when implementing, and whether three-dimensional laser scanner is in the horizontality is convenient for judge in the setting of glass level bubble 209, can effectively reduce the error of scanning result, and the cost of glass level bubble 209 is low.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a three-dimensional laser scanner for engineering survey, includes three-dimensional laser scanner organism (1), base (2), tripod (3) and lithium cell (4), its characterized in that: the three-dimensional laser scanner body (1) is rotatably mounted at the upper end of the base (2), the tripod (3) is fixedly mounted at the bottom end of the base (2), and the three-dimensional laser scanner body (1) is powered by the lithium battery (4); the three-dimensional laser scanner body (1) includes a housing (101), a laser radar (102), a first speed sensor (104), a first motor (105), a panoramic camera (106), a time counter (107), and a central processing unit (108), wherein: the laser radar (102) is arranged right and left opposite to the filter lens (103), a rotating shaft (109) is fixed on the right side wall of the filter lens (103), and a driving wheel (110) is fixed at the right end of the rotating shaft (109); a circular groove (111) is formed in the left side wall of the driving wheel (110), an arc-shaped rack (112) is fixed on the annular inner wall of the circular groove (111), a first incomplete gear (113) is fixed at the center of the circular groove (111), a second incomplete gear (114) is fixed at the output end of the first motor (105), and the second incomplete gear (114) is in meshing connection with the driving wheel (110); the first motor (105) is used for driving the filter (103) to rotate so as to control laser emitted by the laser radar (102) to move in the vertical direction and vertically scan a measured object, the first speed sensor (104) is connected with the first motor (105) and records rotation parameter information of the first motor, the panoramic camera (106) converts a panoramic image into a panoramic spherical point cloud according to a central projection imaging principle, corresponding control points are established on the panoramic image and the three-dimensional laser scanning point cloud, and the time counter (107) is used for recording time information; the laser radar (102), the filter (103), the first speed sensor (104), the first motor (105), the panoramic camera (106), the time counter (107) and the central processing unit (108) are controlled by the central processing unit (108) and are arranged in the shell (101);
a turntable (201) is rotatably mounted on the upper surface of the base (2), the three-dimensional laser scanner body (1) is fixedly mounted on the upper surface of the turntable (201), an annular rack (202) is fixed on the lower surface of the turntable (201), and a mounting groove (203) is further formed in the upper surface of the base (2); a second motor (204) and a second speed sensor (205) are mounted inside the mounting groove (203), a driving gear (206) is fixed at the output end of the second motor (204), the driving gear (206) is meshed and connected with the annular rack (202), and the second speed sensor (205) is connected with the second motor (204) and records the rotation parameter information of the second motor; the outer wall of the base (2) is inserted with a power connector (207), a power line (208) is connected between the power connector (207) and the three-dimensional laser scanner body (1), and the power connector (207) is electrically connected with the second motor (204) and the second speed sensor (205).
2. The three-dimensional laser scanner for engineering measurement according to claim 1, wherein: the lower surface of base (2) is fixed with well core rod (306), the outer wall of well core rod (306) articulates there are three pull rods (307), and three pull rod (307) respectively with three connect through the articulated elements between support frame (301).
3. The three-dimensional laser scanner for engineering measurement according to claim 1, wherein: the outer wall of the bottom end of the ground nail (305) is provided with a thread groove, and the outer wall of the bottom end of the ground nail (305) is provided with a protective cover (308) in a threaded mode.
4. The three-dimensional laser scanner for engineering measurement according to claim 1, wherein: the tripod (3) comprises three support frames (301) hinged to the bottom end face of the base (2), the outer wall of the bottom end of each support frame (301) is sleeved with a sliding sleeve (302), and the left side wall and the right side wall of each sliding sleeve (302) are provided with fixed knobs (303) in a threaded mode; an expansion rod (304) is fixed at the bottom end of the sliding sleeve (302), and a ground nail (305) is fixed at the bottom end of the expansion rod (304); the upper half circle of the tooth rotation of the second incomplete gear (114) is meshed with the arc-shaped rack (112), and the lower half circle of the tooth rotation of the second incomplete gear (114) is meshed with the tooth of the first incomplete gear (113).
5. The three-dimensional laser scanner for engineering measurement according to claim 1, wherein: a pair of handles (122) is fixed on the upper end face of the machine shell (101), and anti-skid grains are formed in the outer walls of the handles (122).
6. The three-dimensional laser scanner for engineering measurement according to claim 1, wherein: the upper surface of base (2) surface inlays and is equipped with glass air level (209), and glass air level (209) precision is 30', can keep the degree of accuracy around the rotation of axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110369955.4A CN113124780A (en) | 2021-04-07 | 2021-04-07 | Three-dimensional laser scanner for engineering survey |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110369955.4A CN113124780A (en) | 2021-04-07 | 2021-04-07 | Three-dimensional laser scanner for engineering survey |
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| CN113124780A true CN113124780A (en) | 2021-07-16 |
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| CN202110369955.4A Withdrawn CN113124780A (en) | 2021-04-07 | 2021-04-07 | Three-dimensional laser scanner for engineering survey |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687382A (en) * | 2021-08-17 | 2021-11-23 | 衢州光明电力投资集团有限公司赋腾科技分公司 | Internal measuring robot for foundation pit |
| CN114964185A (en) * | 2022-08-01 | 2022-08-30 | 西安德普赛科计量设备有限责任公司 | Spatial data measuring device and measuring method thereof |
| CN116123997A (en) * | 2022-11-23 | 2023-05-16 | 中建八局第四建设有限公司 | Three-dimensional laser scanning device and method for bridge geometric form extraction |
-
2021
- 2021-04-07 CN CN202110369955.4A patent/CN113124780A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687382A (en) * | 2021-08-17 | 2021-11-23 | 衢州光明电力投资集团有限公司赋腾科技分公司 | Internal measuring robot for foundation pit |
| CN114964185A (en) * | 2022-08-01 | 2022-08-30 | 西安德普赛科计量设备有限责任公司 | Spatial data measuring device and measuring method thereof |
| CN116123997A (en) * | 2022-11-23 | 2023-05-16 | 中建八局第四建设有限公司 | Three-dimensional laser scanning device and method for bridge geometric form extraction |
| CN116123997B (en) * | 2022-11-23 | 2024-02-23 | 中建八局第四建设有限公司 | Three-dimensional laser scanning device and method for bridge geometric form extraction |
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Application publication date: 20210716 |