CN113687374A - Horizontal calibration mechanism for measuring visual angle for distance measurement - Google Patents

Horizontal calibration mechanism for measuring visual angle for distance measurement Download PDF

Info

Publication number
CN113687374A
CN113687374A CN202111243869.5A CN202111243869A CN113687374A CN 113687374 A CN113687374 A CN 113687374A CN 202111243869 A CN202111243869 A CN 202111243869A CN 113687374 A CN113687374 A CN 113687374A
Authority
CN
China
Prior art keywords
calibration
positioning
horizontal
thick bamboo
section
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.)
Granted
Application number
CN202111243869.5A
Other languages
Chinese (zh)
Other versions
CN113687374B (en
Inventor
郝宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zaozhuang Hi Tech Zone Lizheng Installation Engineering Co ltd
Original Assignee
Zaozhuang Hi Tech Zone Lizheng Installation Engineering Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zaozhuang Hi Tech Zone Lizheng Installation Engineering Co ltd filed Critical Zaozhuang Hi Tech Zone Lizheng Installation Engineering Co ltd
Priority to CN202111243869.5A priority Critical patent/CN113687374B/en
Publication of CN113687374A publication Critical patent/CN113687374A/en
Application granted granted Critical
Publication of CN113687374B publication Critical patent/CN113687374B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S17/00Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06Systems determining position data of a target
    • G01S17/08Systems determining position data of a target for measuring distance only
    • G01S17/10Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/20Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
    • G01C9/22Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container with interconnected containers in fixed relation to each other
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481Constructional features, e.g. arrangements of optical elements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497Means for monitoring or calibrating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention belongs to the technical field of mountain region surveying and mapping, and particularly relates to a measuring visual angle horizontal calibration mechanism for distance measurement, which comprises a support, wherein a positioning table calibration assembly is fixedly arranged at the top of the support, the top of the positioning table calibration assembly is rotatably connected with a horizontal table, a positioning seat is arranged at the top of the horizontal table, a bolt hole is formed in the top of the horizontal table, a mounting hole corresponding to the bolt hole is formed in the positioning seat, the horizontal table is detachably connected with the positioning seat through the bolt hole and the mounting hole, and visual angle calibration assemblies are fixedly arranged on two sides of the positioning seat; under mutually supporting of location platform calibration subassembly and visual angle calibration subassembly, the horizontal degree that accessible location platform calibration subassembly was placed laser range finder body calibrates, and accessible visual angle calibration subassembly calibrates the visual angle levelness that sends of laser range finder body for this device can carry out dual calibration to the horizontal range finding of laser range finder body, and the calibration precision is higher, makes laser range finder body range finding data more accurate.

Description

Horizontal calibration mechanism for measuring visual angle for distance measurement
Technical Field
The invention belongs to the technical field of mountain land surveying and mapping, and particularly relates to a measuring visual angle horizontal calibration mechanism for distance measurement.
Background
The existing mountain distance measurement generally adopts a laser distance meter to measure the distance, the laser distance meter is an instrument for measuring the distance by using a laser beam, and the basic principle is that laser pulses are emitted to an object to be measured and timing is started, and the timing is stopped when reflected light is received; this period of time can be converted into the distance between laser instrument and the target, and laser range finder also can launch laser pulse many times, confirms whether the object is keeping away from or is being close to the light source through the Doppler effect, and when current laser range finder used in the mountain region, because the unevenness on ground, laser range finder's placing can take place the slope for the laser that laser range finder sent is difficult to be in the horizontality, and causes distance measurement's deviation, influences the accuracy performance of measurement.
For this reason, a measurement view angle horizontal calibration mechanism for distance measurement is designed to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a horizontal calibration mechanism for measuring the visual angle for distance measurement, which can be used for horizontally calibrating a laser range finder body placed on a positioning table, ensuring that the laser range finder body is placed on a horizontal placing horizontal table, and horizontally calibrating the visual angle of laser emitted by the laser range finder body, so that the laser emitted by the laser range finder body is prevented from inclining, and the measurement accuracy of the laser range finder body placed on the horizontal calibration mechanism is higher under the action of double horizontal calibration.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a distance measurement is with measuring visual angle horizontal calibration mechanism, includes the support, and the top fixed mounting of support has a location platform calibration subassembly, and the top of location platform calibration subassembly is rotated and is connected with the horizontal stand, and the top of horizontal stand is equipped with the positioning seat, and the bolt hole has been seted up at the top of horizontal stand, and sets up the mounting hole corresponding with the bolt hole on the positioning seat, and the horizontal stand passes through the bolt hole, the mounting hole can be dismantled with the positioning seat and be connected, and the equal fixed mounting in both sides of positioning seat has a visual angle calibration subassembly.
Preferably, the horizontal calibration mechanism for measuring the visual angle for distance measurement comprises a liquid storage table and four calibration cylinders which are distributed in a central symmetry manner, the four calibration cylinders are distributed outside the liquid storage table, a liquid storage cavity is formed inside the liquid storage table, a first communication rod and a second communication rod are arranged between the liquid storage table and the calibration cylinders, the second communication rod is located above the first communication rod, the liquid storage cavity is communicated with the calibration cylinders through the first communication rod and the second communication rod, calibration telescopic mechanisms are arranged inside the four calibration cylinders, the tops of the calibration telescopic mechanisms penetrate through the calibration cylinders and extend to the outside of the calibration cylinders to be in contact with the horizontal table, a universal coupling is fixedly mounted at the center of the top of the liquid storage table, the other end of the universal coupling is fixedly connected with the bottom of the horizontal table, and liquid which is communicated with each other is filled in the liquid storage cavity and the calibration cylinders.
Preferably, the horizontal calibration mechanism for measuring the visual angle for distance measurement comprises a float, a calibration rod and a ball seat, wherein the float is fixedly arranged at one end of the calibration rod, the float is positioned in the calibration cylinder, the other end of the calibration rod is fixedly connected with the ball seat, the ball seat is positioned outside the calibration cylinder, a jacking ball is rotatably connected in the ball seat and is in rolling connection with the bottom of the horizontal table, and the calibration cylinder is provided with scale marks on the outside.
Preferably, the horizontal calibration mechanism for measuring the distance is characterized in that a locking cylinder is fixedly mounted at the top of the calibration cylinder, the locking cylinder is communicated with the calibration cylinder, the calibration rod is slidably connected inside the locking cylinder, a plurality of anti-abrasion balls distributed at equal intervals are fixedly mounted on the inner wall of the locking cylinder, a sealing gasket is fixedly bonded inside the locking cylinder and is in sealing connection with the calibration rod, a ball through hole matched with the anti-abrasion balls is formed in the sealing gasket, and the anti-abrasion balls penetrate through the ball through hole and are in rolling connection with the calibration rod.
Preferably, the horizontal calibration mechanism for measuring the distance is characterized in that a locking mechanism is fixedly arranged on one side of a locking cylinder, the locking mechanism comprises a threaded sleeve and a locking screw, the locking screw is connected to one side of the locking cylinder in a sealing manner, the threaded sleeve is communicated with the inside of the locking cylinder and is in threaded connection with the inside of the threaded sleeve, an extrusion block is fixedly arranged at one end of the locking screw, an anti-slip pad is fixedly arranged on the other side of the extrusion block, a plurality of bulges are fixedly arranged on one side of the anti-slip pad, which is far away from the extrusion block, the sealing pad is provided with a through hole matched with the extrusion block, and the extrusion block is in contact with a calibration rod through the through hole.
Preferably, the horizontal calibration mechanism for measuring the visual angle for distance measurement comprises a connecting rod and a shielding box, the connecting rod is fixedly arranged on the outer wall of the positioning seat, the other end of the connecting rod is fixedly connected with the shielding box, positioning cylinders are fixedly arranged on two sides of the shielding box, positioning grooves are formed in the two positioning cylinders, a first light positioning mechanism and a second light positioning mechanism are respectively in threaded connection with the insides of the two positioning grooves, the first light positioning mechanism is positioned on one side close to the positioning seat, and the first light positioning mechanism is horizontally corresponding to the second light positioning mechanism.
Preferably, the horizontal calibration mechanism for measuring the visual angle for distance measurement is characterized in that a light reflector is fixedly mounted at a positioning cylinder at one side far away from the positioning seat, the light reflector is fixedly mounted inside the shielding box and is of an arc-shaped structure, optical sensors are fixedly mounted at the top and the bottom of an inner cavity of the shielding box, the optical sensors are electrically connected with an external power supply, two symmetrically distributed indicating lamps are fixedly mounted at one side of the shielding box close to the positioning seat, the indicating lamps correspond to the two optical sensors respectively in position, and the indicating lamps are electrically connected with the two optical sensors respectively.
Preferably, the first light ray positioning mechanism comprises a first positioning cylinder and a positioning plate, the positioning plate is fixedly arranged inside the first positioning cylinder, and a first positioning hole is formed in the center of the positioning plate.
Preferably, the second light ray positioning mechanism comprises a second positioning cylinder and a second positioning plate, the second positioning plate is fixedly arranged inside the second positioning cylinder, the second positioning hole is formed in the center of the second positioning plate, and the second positioning hole and the first positioning hole are located on the same horizontal line.
Preferably, the horizontal calibration mechanism for measuring the visual angle for distance measurement is characterized in that threaded strips are fixedly arranged on the outer portions of the first positioning cylinder and the second positioning cylinder, threaded grooves matched with the threaded strips are formed in the positioning grooves, and the first positioning cylinder and the second positioning cylinder are in threaded connection with the positioning cylinders.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, a self-adaptive positioning table calibration assembly and a horizontal table are fixedly arranged at the top of a support, under the mutual matching of the positioning table calibration assembly and the horizontal table, calibration telescopic mechanisms at four corners of the bottom of the horizontal table are inserted in a liquid storage table, liquid is filled in the liquid storage table, the calibration telescopic mechanisms float on the top of the liquid under the action of buoyancy, when the support is placed on uneven mountains, the liquid in the liquid storage table can automatically incline to form a horizontal plane, so that the calibration telescopic mechanisms floating on the liquid horizontal plane move, and the four calibration telescopic mechanisms are still in a horizontal state to support the horizontal table, so that the horizontal table can be horizontally calibrated under the action of the calibration telescopic mechanisms at the four corners of the bottom, and a horizontal installation space is provided for the placement of a laser range finder body, and the calibration telescopic mechanism can be automatically adjusted under the liquid flowing without manual adjustment, the operation is simpler and more convenient, the problem that the height of the bracket needs to be adjusted back and forth by a user to be leveled, the operation is complex, and the manual adjustment precision is not high is effectively solved.
2. In the invention, the top of the horizontal table is detachably connected with the positioning seat and the visual angle calibration component, under the mutual matching of the positioning seat and the visual angle calibration component, when the laser range finder body is arranged on the top of the positioning seat, the emitting end of the laser range finder body is aligned with the first light ray positioning mechanism, the laser emitted by the laser range finder body can pass through the first positioning hole in the first positioning cylinder, when the laser passing through the first positioning hole passes through the second positioning hole in the second positioning cylinder horizontally corresponding to the first positioning cylinder, the visual angle of the laser range finder body is emitted along the horizontal direction, when the laser passing through the first positioning hole does not pass through the second positioning hole in the second positioning cylinder, the laser ray is inclined, and is projected onto the light reflecting cover in the shielding box and emitted under the action of the light reflecting cover, so that the inclined laser is reflected to the inner wall of the shielding box, and contact with the photosensor that shelters from on the incasement wall for light is sensed to photosensor, and communicates with rather than corresponding pilot lamp, makes corresponding pilot lamp send out the police dispatch newspaper, and the suggestion user of service adjusts toward corresponding direction, and the laser that sends until the laser distancer body can level jet out two inside locating holes of a location section of thick bamboo two, thereby carries out horizontal calibration to the visual angle that the laser distancer body sent laser.
3. According to the invention, under the mutual cooperation of the positioning table calibration component and the visual angle calibration component, the horizontal degree of the laser range finder body can be calibrated through the positioning table calibration component, and the visual angle levelness of the laser range finder body can be calibrated through the visual angle calibration component, so that the device can be used for double calibration of horizontal ranging of the laser range finder body, the calibration precision is higher, and the ranging data of the laser range finder body is more accurate.
4. According to the laser range finder, the locking mechanism is fixedly arranged on one side of the calibration cylinder, after the calibration telescopic mechanism is calibrated horizontally, the rotary locking screw rod can be rotated manually, the calibration telescopic mechanism in the calibration cylinder is locked through the extrusion block, and the positions of the calibration telescopic mechanism and the calibration cylinder are limited, so that the calibration telescopic mechanism can support a calibrated horizontal table more stably, and the horizontal table is effectively prevented from being stressed unstably to cause the inclination of the horizontal table and influence the horizontal calibration precision of the horizontal table after the laser range finder body and the positioning seat are arranged on the horizontal table.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic connection diagram of a positioning stage calibration assembly, a horizontal stage, a positioning base and a view angle calibration assembly according to the present invention;
FIG. 3 is a schematic view of a positioning stage calibration assembly according to the present invention;
FIG. 4 is a cross-sectional view of a positioning table alignment assembly of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 4;
FIG. 6 is a schematic view showing the connection of the liquid storage table, the calibration telescopic mechanism and the locking mechanism according to the present invention;
FIG. 7 is a schematic view illustrating a connection between the view angle calibrating assembly and the positioning seat according to the present invention;
FIG. 8 is a schematic view of a view angle calibration assembly according to the present invention;
FIG. 9 is a schematic view of a light alignment of the viewing angle alignment assembly of the present invention.
In the figure:
1. a support;
2. a positioning table calibration assembly; 21. a liquid storage platform; 211. a liquid storage cavity; 22. a calibration cylinder; 221. a locking cylinder; 222. scale lines; 223. the ball is prevented from being worn; 224. a gasket; 225. a through hole; 226. perforating the ball; 23. calibrating the telescopic mechanism; 231. floating; 232. a calibration rod; 233. a ball seat; 234. jacking the ball; 24. a universal coupling; 25. a first connecting rod; 251. a communicating cavity; 26. a locking mechanism; 261. a threaded sleeve; 262. locking the screw rod; 263. extruding the block; 264. a non-slip mat; 265. a protrusion; 27. a second connecting rod;
3. a horizontal table; 31. bolt holes;
4. positioning seats; 41. mounting holes;
5. a viewing angle calibration component; 51. a connecting rod; 52. a shielding box; 521. a limiting cylinder; 522. positioning a groove; 523. a thread groove; 53. a first light ray positioning mechanism; 531. a first positioning cylinder; 532. a first positioning plate; 533. a first positioning hole; 534. a threaded strip; 54. a second light ray positioning mechanism; 541. a second positioning cylinder; 542. a second positioning plate; 543. a second positioning hole; 55. a light sensor; 56. an indicator light; 57. a light reflector.
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.
As shown in fig. 1, 2 and 3;
a horizontal calibration mechanism for measuring visual angle for distance measurement is not shown in the figure of the bracket 1 and the distance measuring equipment.
In this embodiment: support 1 is the tripod of current structure for provide the support to ranging apparatus, make ranging apparatus can have the take the place of the operation of finding the distance of take the altitude.
It should be noted that: the distance measuring equipment is a laser distance measuring instrument.
Based on the existing support 1 and distance measuring equipment, a positioning table calibration component 2 and a horizontal table 3 which can be self-adaptive are fixedly installed at the top of the support 1, under the mutual matching of the positioning table calibration component 2 and the horizontal table 3, calibration telescopic mechanisms 23 at four corners of the bottom of the horizontal table 3 are inserted into a liquid storage table 21, because the liquid storage table 21 is filled with liquid, the calibration telescopic mechanisms 23 float on the top of the liquid under the action of buoyancy, when the support 1 is placed on uneven mountains, the liquid in the liquid storage table 21 can automatically incline to form a horizontal plane, so that the calibration telescopic mechanisms 23 floating on the liquid horizontal plane move, and the four calibration telescopic mechanisms 23 are still in a horizontal state to support the horizontal table 3, so that the horizontal table 3 can be horizontally calibrated under the action of the calibration telescopic mechanisms 23 at the four corners of the bottom, and for placing of range unit provide a horizontally installation space to calibration telescopic machanism 23 can adjust automatically under the liquid flow, need not artificial regulation, and the operation is more simple and convenient, has effectively solved the user of service and has need make a round trip to adjust support 1 height and carry out the level, complex operation, and the artificial problem that the precision is not high of adjusting.
Further, the method comprises the following steps of;
in combination with the above; top fixed mounting of support 1 has a location platform calibration subassembly 2, location platform calibration subassembly 2 includes stock solution platform 21 and four calibration section of thick bamboo 22 that are central symmetric distribution, four calibration section of thick bamboo 22 distribute in the outside of stock solution platform 21, stock solution chamber 211 has been seted up to the inside of stock solution platform 21, and be equipped with connecting rod one 25 and connecting rod two 27 between stock solution platform 21 and the calibration section of thick bamboo 22, connecting rod two 27 are located the top of connecting rod one 25, connecting rod one 25 has all been seted up with the inside of connecting rod two 27 and has been linked together chamber 251, stock solution chamber 211 is through connecting rod one 25, connecting rod two 27 is linked together with calibration section of thick bamboo 22, the inside of four calibration section of thick bamboo 22 all is equipped with calibration telescopic machanism 23, calibration telescopic machanism 23's top is run through calibration section of thick bamboo 22 and is extended to the outside of calibration section of thick bamboo 22 and is contacted with horizontal stand 3.
In this embodiment, the liquid storage table 21 is used for providing liquid for the four calibration cylinders 22, and a vertically-distributed first communication rod 25 and a second communication rod 27 are used for forming a vertically-communicated loop between the calibration cylinder 22 and the liquid storage table 21, so that the liquid inside the liquid storage table 21 can flow between the calibration cylinder 22 and the liquid storage table 21, when the support 1 is placed on an inclined mountain, the liquid inside the liquid storage table 21 moves, because the liquid inside the liquid storage table 21 is always in a horizontal state, the four calibration telescopic mechanisms 23 floating on a liquid level automatically move, and under the action of the liquid level, the four calibration telescopic mechanisms 23 are always on the same horizontal line and support four corners of the horizontal table 3, so that four corners of the horizontal table 3 are always in a horizontal state, because the four calibration telescopic mechanisms 23 can be under the action of the liquid, automatically, carry out horizontal calibration, need not artificial regulation, operate more simple and conveniently, prevent effectively that the user of service from needing to make a round trip to adjust 1 high of support and carrying out the level, complex operation, and the artificial problem that the precision is not high of adjusting.
It should be noted that: the liquid that communicates each other is all filled to the inside of stock solution chamber 211 and calibration section of thick bamboo 22, and certain space is left to the inside of stock solution chamber 211 for the liquid of stock solution chamber 211 can form the horizontal plane in the inside of stock solution chamber 211 and calibration section of thick bamboo 22.
It should be understood that: the first communication rod 25 and the second communication rod 27 are used for communicating the liquid storage cavity 211 with the calibration cylinder 22, and a loop can be formed between the liquid storage cavity 211 and the calibration cylinder 22 through the first communication rod 25 and the second communication rod 27, so that liquid in the liquid storage cavity 211 and the liquid in the calibration cylinder 22 can flow and be supplemented mutually.
Further, the method comprises the following steps of;
in combination with the above, the calibration telescopic mechanism 23 includes a float 231, a calibration rod 232 and a ball seat 233, the float 231 is fixedly installed at one end of the calibration rod 232, the float 231 is located inside the calibration cylinder 22, the other end of the calibration rod 232 is fixedly connected with the ball seat 233, the ball seat 233 is located outside the calibration cylinder 22, the inside of the ball seat 233 is rotatably connected with a jacking ball 234, and the jacking ball 234 is in rolling connection with the bottom of the horizontal table 3.
In this embodiment, under the horizontal plane effect of the inside liquid of liquid storage cavity 211, cursory 231 floats on the horizontal plane of liquid, when liquid takes place to remove, cursory 231 can drive alignment rod 232 rebound, and support through jack-up ball 234 of alignment rod 232 other end and the bottom of horizontal platform 3, because four calibration telescopic machanisms 23 are located the bottom four corners of horizontal platform 3, when one of them or two alignment rod 232 rebound, can rise the corresponding position of horizontal platform 3, with this horizontal degree of adjusting horizontal platform 3, thereby calibrate horizontal platform 3, and place for the laser range finder body provides a horizontally installation space.
It should be noted that: the calibration cylinder 22 is provided with scale marks 222 on the outside thereof, and the liquid inside the four calibration cylinders 22 can be observed and judged by observing the scale marks 222 on the outside of the calibration cylinder 22, so that the degree of displacement of the corresponding position can be known.
It should be understood that: the calibration cylinder 22 is made of transparent material, so that a user can conveniently observe the level of liquid in the calibration cylinder 22, and the deviation degree of the installation position can be known by comparing the scale marks 222.
Further, the method comprises the following steps of;
in combination with the above, the top of the calibration cylinder 22 is fixedly installed with a locking cylinder 221, the locking cylinder 221 is communicated with the calibration cylinder 22, the calibration rod 232 is slidably connected inside the locking cylinder 221, the inside of the locking cylinder 221 is fixedly bonded with a sealing gasket 224, and the sealing gasket 224 is hermetically connected with the calibration rod 232.
In this embodiment, the locking cylinder 221 is used to lock and limit the calibrated calibration rod 232, the calibration rod 232 slides up and down inside the locking cylinder 221, and the sealing gasket 224 is bonded and fixed inside the locking cylinder 221, so that the liquid inside the calibration cylinder 22 does not overflow through the locking cylinder 221, and the sealing of the calibration cylinder 22 is maintained.
It should be noted that: the inner wall fixed mounting of a locking section of thick bamboo 221 has a plurality of equidistant distribution's abrasionproof ball 223, abrasionproof ball 223 can reduce the frictional force between a locking section of thick bamboo 221 and the alignment rod 232, become to slide to roll, make alignment rod 232 accessible abrasionproof ball 223 roll connection in the inside of a locking section of thick bamboo 221, it is more smooth and easy to remove, prevent that alignment rod 232 from taking place when removing in the inside of a locking section of thick bamboo 221, frictional force is great, cause and remove inconveniently, influence the calibration operation of alignment rod 232.
It should be understood that: seal 224 is last to be seted up with ball perforation 226 of abrasionproof ball 223 looks adaptation, and abrasionproof ball 223 runs through ball perforation 226 and calibration rod 232 roll connection, and ball perforation 226 is used for providing the space for placing of abrasionproof ball 223 for abrasionproof ball 223 accessible runs through ball perforation 226 and is connected with calibration rod 232.
As shown in fig. 5 and 6;
in combination with the above, one side of the locking cylinder 221 is fixedly provided with the locking mechanism 26, the locking mechanism 26 includes a threaded sleeve 261 and a locking screw 262, the locking screw 262 is hermetically connected to one side of the locking cylinder 221, the threaded sleeve 261 is communicated with the inside of the locking cylinder 221, the locking screw 262 is threadedly connected to the inside of the threaded sleeve 261, one end of the locking screw 262 is fixedly provided with the extrusion block 263,
in this embodiment, a locking mechanism 26 is fixedly installed on one side of the calibration cylinder 22, after the calibration telescopic mechanism 23 is calibrated horizontally, the locking screw 262 can be rotated manually to rotate and rotate the locking screw 262, under the action of the thread inside the threaded sleeve 261, the locking screw 262 can be automatically rotated inside the threaded sleeve 261, the calibration rod 232 inside the calibration cylinder 22 is locked by the extrusion block 263, and the positions of the calibration rod 232 and the calibration cylinder 22 are limited, so that the calibration telescopic mechanism 23 can support the calibrated horizontal table 3 more stably, the horizontal table 3 is effectively prevented from being stressed and unstable after the laser range finder body and the positioning seat 4 are installed on the horizontal table 3, the inclination of the horizontal table 3 is caused, the horizontal calibration accuracy of the horizontal table 3 is affected, after the calibration rod 232 is locked, under the self-locking function of the thread inside the threaded sleeve 261, the position between the locking screw 262 and the locking cylinder 221 can be locked, thereby facilitating adjustment of the lock screw 262.
It should be noted that: the sealing gasket 224 is provided with a through hole 225 matched with the pressing block 263, the pressing block 263 is in contact with the calibration rod 232 through the through hole 225, and the through hole 225 is used for providing a channel for the movement of the pressing block 263, so that the pressing block 263 can enter the locking cylinder 221 through the through hole 225 on the sealing gasket 224 and can be in contact with and locked on the calibration rod 232.
It should be understood that: the anti-skidding pad 264 is fixedly mounted on the other side of the extrusion block 263, the plurality of protrusions 265 are fixedly mounted on one side, away from the extrusion block 263, of the anti-skidding pad 264, the anti-skidding pad 264 can form a buffer layer between the calibration rod 232 and the extrusion block 263, and the calibration rod 232 and the extrusion block 263 are prevented from being rigidly connected to cause damage to the calibration rod 232 and the extrusion block 263.
As shown in fig. 3 and 4;
in combination with the above, the top of the positioning table calibration assembly 2 is rotatably connected with the horizontal table 3, the top center of the liquid storage table 21 is fixedly provided with the universal coupling 24, and the other end of the universal coupling 24 is fixedly connected with the bottom of the horizontal table 3.
In this embodiment, the horizontal stand 3 is used for installing the positioning seat 4 and the distance measuring equipment, and the bottom center department of horizontal stand 3 rotates with stock solution platform 21 through universal coupling 24 to be connected for four calibration telescopic machanisms 23 are when carrying out the level calibration, and universal coupling 24 can be rather than the corresponding rotation, thereby makes horizontal stand 3 carry out the level calibration operation, and universal coupling 24 is used for connecting horizontal stand 3 and stock solution platform 21 simultaneously.
It should be noted that: the top of horizontal stand 3 is equipped with positioning seat 4, bolt hole 31 has been seted up at the top of horizontal stand 3, and set up on positioning seat 4 with the corresponding mounting hole 41 of bolt hole 31, horizontal stand 3 passes through bolt hole 31, the connection can be dismantled to mounting hole 41 and positioning seat 4, positioning seat 4 is used for providing installation space for visual angle calibration subassembly 5, because positioning seat 4 passes through bolt hole 31 with horizontal stand 3, mounting hole 41 is connected, make and be the horizontality between positioning seat 4 and the horizontal stand 3, thereby guarantee that visual angle calibration subassembly 5 installs on the horizontal plane, the top center department of positioning seat 4 is used for placing and fixed range unit.
The top of the horizontal table 3 is detachably connected with the positioning seat 4 and the visual angle calibration component 5, under the mutual matching of the positioning seat 4 and the visual angle calibration component 5, when the laser range finder body is arranged at the top of the positioning seat 4, the emitting end of the laser range finder body is aligned with the first light ray positioning mechanism 53, the laser emitted by the laser range finder body can pass through the first positioning hole 533 in the first positioning barrel 531, when the laser passing through the first positioning hole 533 passes through the second positioning hole 543 in the second positioning barrel 541 horizontally corresponding to the first positioning barrel 531, the visual angle of the laser range finder body is emitted along the horizontal direction at the moment, the horizontal degree of the visual angle of the light emitted by the range finder is horizontally calibrated, and under the mutual matching of the positioning table calibration component 2 and the visual angle calibration component 5, the horizontal degree of the placement of the laser range finder body can be calibrated through the positioning table calibration component 2, accessible visual angle calibration subassembly 5 calibrates the visual angle levelness that sends of laser range finder body for this device can carry out dual calibration to the horizontal range finding of laser range finder body, and the calibration precision is higher, makes laser range finder body range finding data more accurate.
Further, the method comprises the following steps of;
combine above-mentioned content, the equal fixed mounting in both sides of positioning seat 4 has visual angle calibration subassembly 5, visual angle calibration subassembly 5 includes connecting rod 51 and shelters from case 52, connecting rod 51 fixed mounting is at the outer wall of positioning seat 4, and connecting rod 51's the other end with shelter from case 52 fixed connection, the equal fixed mounting in both sides that shelters from case 52 has spacing section of thick bamboo 521, and the constant head tank 522 has all been seted up to the inside of two spacing section of thick bamboos 521, threaded connection has light positioning mechanism 53 and light positioning mechanism two 54 respectively in the inside of two constant head tanks 522.
In this embodiment, through being equipped with visual angle calibration subassembly 5 at the top of horizontal stand 3, under the mutually supporting of positioning seat 4 and visual angle calibration subassembly 5, when the laser range finder body is installed at positioning seat 4 top, make the emission end of laser range finder body aim at light positioning mechanism 53, make the laser that the laser range finder body sent can pass locating cylinder one 533 of inside, when the laser that passes locating cylinder one 533 passes locating hole two 543 of inside two 542 of locating plate two that correspond with locating plate one 532 level, then the visual angle of laser range finder body this moment is for following the horizontal direction and jets out, thereby calibrate the laser that jets out.
It should be noted that: and the first light positioning mechanism 53 is located at one side close to the positioning seat 4, and the first light positioning mechanism 53 horizontally corresponds to the second light positioning mechanism 54, so that the first light positioning mechanism 53 and the second light positioning mechanism 54 limit and calibrate the light emitted by the distance measuring equipment at two sides of the shielding box 52.
Further, the method comprises the following steps of;
in combination with the above, the position limiting tube 521 far away from one side of the positioning seat 4 is fixedly provided with the light reflector 57, the light reflector 57 is fixedly arranged inside the shielding box 52, the light reflector 57 is of an arc-shaped structure, the top and the bottom of the inner cavity of the shielding box 52 are both fixedly provided with the light sensors 55, the light sensors 55 are electrically connected with an external power supply, one side of the shielding box 52 close to the positioning seat 4 is fixedly provided with two symmetrically distributed indicating lamps 56, the indicating lamps 56 are respectively corresponding to the positions of the two light sensors 55, and the indicating lamps 56 are respectively electrically connected with the two light sensors 55.
In this embodiment, when the laser passing through the first positioning hole 533 does not pass through the second positioning hole 543 inside the second positioning tube 541, the laser beam is inclined, and is projected onto the light reflector 57 inside the shielding box 52 and emitted under the action of the light reflector 57, so that the laser emitted obliquely is reflected onto the inner wall of the shielding box 52 and contacts with the light sensor 55 on the inner wall of the shielding box 52, so that the light sensor 55 senses light and is communicated with the indicator 56 corresponding thereto, so that the corresponding indicator 56 emits an alarm, and prompts a user to adjust the laser in the corresponding direction until the laser emitted by the laser range finder body can horizontally emit out of the second positioning hole 543 inside the second positioning tube 541, thereby horizontally calibrating the viewing angle of the laser emitted by the laser range finder body.
It should be noted that: the light sensor 55 is connected to an external controller, which is not shown, and the external controller is connected to the indicator 56, so that when the light sensor 55 receives the laser reflected by the light reflector 57, the signal is transmitted to the external controller, and the indicator 56 is turned on by the external controller, so that the indicator 56 corresponding to the light sensor 55 gives an alarm and prompts a user to adjust the direction of the light.
Under mutually supporting of location platform calibration subassembly 2 and visual angle calibration subassembly 5, the horizontal degree that accessible location platform calibration subassembly 2 placed the laser range finder body calibrates, and accessible visual angle calibration subassembly 5 calibrates the visual angle levelness that sends of laser range finder body for this device can carry out dual calibration to the horizontal range finding of laser range finder body, and the calibration precision is higher, makes laser range finder body range finding data more accurate.
As shown in fig. 7 and 8;
in combination with the above, the first light positioning mechanism 53 includes a first positioning cylinder 531 and a first positioning plate 532, the first positioning plate 532 is fixedly installed inside the first positioning cylinder 531, and a first positioning hole 533 is formed in the center of the first positioning plate 532.
In this embodiment, the first positioning hole 533 is used for primarily positioning the laser emitted by the distance measuring device, and the first positioning plate 532 is used for limiting and fixing the position between the first positioning plate 532 and the limiting cylinder 521, so that the first positioning hole 533 can be accurately clamped at the center of the inside of the limiting cylinder 521, and is located on the same horizontal line with the second light positioning mechanism 54.
It should be noted that: the second light positioning mechanism 54 includes a second positioning barrel 541 and a second positioning plate 542, the second positioning plate 542 is fixedly installed inside the second positioning barrel 541, a second positioning hole 543 is formed in the center of the second positioning plate 542, the second positioning hole 543 and the first positioning hole 533 are located on the same horizontal line, the second positioning hole 543 is used for performing secondary positioning on laser emitted by the distance measuring device, the laser emitted by the distance measuring device can only be emitted in the horizontal direction due to the mutual matching of the first positioning hole 533 and the second positioning hole 543, the second positioning plate 542 is used for limiting and fixing the position between the second positioning hole 543 and the limiting barrel 521, and the second positioning hole 543 can be accurately clamped in the center of the limiting barrel 521 and is located on the same horizontal line with the first light positioning mechanism 53.
It should be understood that: the outer parts of the second positioning cylinder 541 and the first positioning cylinder 531 are fixedly provided with thread strips 534, the inside of the positioning groove 522 is provided with thread grooves 523 matched with the thread strips 534, the first positioning cylinder 531 and the second positioning cylinder 541 are in threaded connection with the limiting cylinder 521, the second positioning cylinder 541 or the first positioning cylinder 531 can be manually rotated, so that the thread strips 534 outside the second positioning cylinder 541 or the first positioning cylinder 531 are meshed with the thread grooves 523 inside the positioning groove 522, the thread connection is carried out, and the second positioning cylinder 541 or the first positioning cylinder 531 can be detached from and connected with the limiting cylinder 521.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a distance measurement is with measuring visual angle horizontal calibration mechanism, includes support (1), its characterized in that, the top fixed mounting of support (1) has location platform calibration subassembly (2), the top of location platform calibration subassembly (2) is rotated and is connected with horizontal stand (3), the top of horizontal stand (3) is equipped with positioning seat (4), bolt hole (31) have been seted up at the top of horizontal stand (3), just set up on positioning seat (4) with corresponding mounting hole (41) of bolt hole (31), horizontal stand (3) pass through bolt hole (31) mounting hole (41) with the connection can be dismantled to positioning seat (4), the equal fixed mounting in both sides of positioning seat (4) has visual angle calibration subassembly (5).
2. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 1, characterized in that: location platform calibration subassembly (2) is the calibration section of thick bamboo (22) of central symmetric distribution including stock solution platform (21) and four, four calibration section of thick bamboo (22) distribute in the outside of stock solution platform (21), stock solution chamber (211) has been seted up to the inside of stock solution platform (21), just stock solution platform (21) with be equipped with between calibration section of thick bamboo (22) intercommunication pole one (25) and intercommunication pole two (27), intercommunication pole two (27) are located the top of intercommunication pole one (25), intercommunication pole one (25) with intercommunication pole two (27) inside has all been seted up intercommunication chamber (251), stock solution chamber (211) pass through intercommunication pole one (25), intercommunication pole two (27) with calibration section of thick bamboo (22) are linked together, four the inside of calibration section of thick bamboo (22) all is equipped with calibration telescopic machanism (23), the top of calibration telescopic machanism (23) is run through calibration section of thick bamboo (22) and extend to the outside of calibration section of thick bamboo (22) with the calibration section of thick bamboo (22) outside with The horizontal table (3) contacts, the top center department fixed mounting of stock solution platform (21) has universal shaft joint (24), the other end of universal shaft joint (24) with the bottom fixed connection of horizontal table (3), stock solution chamber (211) with the inside of calibration section of thick bamboo (22) all is filled with the liquid of intercommunication each other.
3. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 2, characterized in that: calibration telescopic machanism (23) are including cursory (231), alignment rod (232) and ball seat (233), cursory (231) fixed mounting be in the one end of alignment rod (232), just cursory (231) are located the inside of calibration section of thick bamboo (22), just the other end of alignment rod (232) with ball seat (233) fixed connection, just ball seat (233) are located the outside of calibration section of thick bamboo (22), the inside rotation of ball seat (233) is connected with jack-up ball (234), jack-up ball (234) with the bottom roll connection of levelling bench (3), the outside of calibration section of thick bamboo (22) is equipped with scale mark (222).
4. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 3, characterized in that: the top fixed mounting of calibration section of thick bamboo (22) has a locking section of thick bamboo (221), just locking section of thick bamboo (221) with calibration section of thick bamboo (22) is linked together, calibration pole (232) sliding connection be in the inside of locking section of thick bamboo (221), the inner wall fixed mounting of locking section of thick bamboo (221) has a plurality of equidistant distribution's abrasionproof ball (223), just the inside bonding of locking section of thick bamboo (221) is fixed with sealed pad (224), sealed pad (224) with calibration pole (232) sealing connection, just sealed pad (224) is last seted up with ball perforation (226) of abrasionproof ball (223) looks adaptation, abrasionproof ball (223) run through ball perforation (226) with calibration pole (232) roll connection.
5. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 4, characterized in that: a locking mechanism (26) is fixedly arranged on one side of the locking cylinder (221), the locking mechanism (26) comprises a threaded sleeve (261) and a locking screw rod (262), the locking screw rod (262) is connected with one side of the locking cylinder (221) in a sealing way, and the threaded sleeve (261) communicates with the inside of the locking cylinder (221), and the locking screw (262) is threadedly coupled to the inside of the threaded sleeve (261), one end of the locking screw rod (262) is fixedly provided with an extrusion block (263), and the other side of the extrusion block (263) is fixedly provided with a non-slip mat (264), a plurality of bulges (265) are fixedly arranged on one side of the non-slip mat (264) far away from the extrusion block (263), the sealing gasket (224) is provided with a through hole (225) matched with the extrusion block (263), the pressing block (263) is in contact with the calibration rod (232) by penetrating through the through hole (225).
6. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 1, characterized in that: visual angle calibration subassembly (5) include connecting rod (51) and shelter from case (52), connecting rod (51) fixed mounting be in the outer wall of positioning seat (4), just the other end of connecting rod (51) with shelter from case (52) fixed connection, the equal fixed mounting in both sides of sheltering from case (52) has spacing section of thick bamboo (521), and two constant head tank (522) have all been seted up to the inside of spacing section of thick bamboo (521), two there are light positioning mechanism one (53) and light positioning mechanism two (54) in the inside of constant head tank (522) threaded connection respectively, just light positioning mechanism one (53) are located and are close to one side of positioning seat (4), just light positioning mechanism one (53) with light positioning mechanism two (54) level corresponds.
7. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 6, characterized in that: keep away from spacing section of thick bamboo (521) of positioning seat (4) one side department fixed mounting have light reflex housing (57), light reflex housing (57) fixed mounting be in shelter from the inside of case (52), just light reflex housing (57) are the arc structure, just shelter from the equal fixed mounting in inner chamber top and the bottom of case (52) and have light sensor (55), light sensor (55) and external power source electric connection, just shelter from case (52) and be close to one side fixed mounting of positioning seat (4) have two symmetric distribution's pilot lamp (56), pilot lamp (56) respectively with two the position of light sensor (55) is corresponding, just pilot lamp (56) respectively with two light sensor (55) electric connection.
8. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 6, characterized in that: the first light ray positioning mechanism (53) comprises a first positioning barrel (531) and a first positioning plate (532), the first positioning plate (532) is fixedly installed inside the first positioning barrel (531), and a first positioning hole (533) is formed in the center of the first positioning plate (532).
9. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 8, characterized in that: the second light positioning mechanism (54) comprises a second positioning barrel (541) and a second positioning plate (542), the second positioning plate (542) is fixedly installed inside the second positioning barrel (541), a second positioning hole (543) is formed in the center of the second positioning plate (542), and the second positioning hole (543) and the first positioning hole (533) are located on the same horizontal line.
10. The measurement view angle horizontal calibration mechanism for distance measurement according to claim 9, characterized in that: the positioning cylinder I (541) and the positioning cylinder I (531) are fixedly provided with thread strips (534) at the outer parts, the positioning groove (522) is internally provided with thread grooves (523) matched with the thread strips (534), and the positioning cylinder I (531) and the positioning cylinder II (541) are in threaded connection with the limiting cylinder (521).
CN202111243869.5A 2021-10-26 2021-10-26 Horizontal calibration mechanism for measuring visual angle for distance measurement Active CN113687374B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111243869.5A CN113687374B (en) 2021-10-26 2021-10-26 Horizontal calibration mechanism for measuring visual angle for distance measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111243869.5A CN113687374B (en) 2021-10-26 2021-10-26 Horizontal calibration mechanism for measuring visual angle for distance measurement

Publications (2)

Publication Number Publication Date
CN113687374A true CN113687374A (en) 2021-11-23
CN113687374B CN113687374B (en) 2022-02-08

Family

ID=78588139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111243869.5A Active CN113687374B (en) 2021-10-26 2021-10-26 Horizontal calibration mechanism for measuring visual angle for distance measurement

Country Status (1)

Country Link
CN (1) CN113687374B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116817877A (en) * 2023-08-29 2023-09-29 中启胶建集团有限公司 Leveling device for topographic survey

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015122057B3 (en) * 2015-12-17 2017-07-06 Endress+Hauser Gmbh+Co. Kg Calibration system for calibrating at least one distance measuring device and associated calibration method
CN208138792U (en) * 2018-04-10 2018-11-23 北京华建联造价工程师事务所 A kind of rangefinder support frame
CN209673118U (en) * 2019-05-20 2019-11-22 三门峡职业技术学院 A kind of Novel engineering measurement horizontal calibrating device
CN111551157A (en) * 2020-06-19 2020-08-18 贵州工业职业技术学院 A centering leveling device for engineering survey
CN212845939U (en) * 2020-08-07 2021-03-30 厦门康测土木工程有限公司 Laser range finder is used in concrete construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015122057B3 (en) * 2015-12-17 2017-07-06 Endress+Hauser Gmbh+Co. Kg Calibration system for calibrating at least one distance measuring device and associated calibration method
CN208138792U (en) * 2018-04-10 2018-11-23 北京华建联造价工程师事务所 A kind of rangefinder support frame
CN209673118U (en) * 2019-05-20 2019-11-22 三门峡职业技术学院 A kind of Novel engineering measurement horizontal calibrating device
CN111551157A (en) * 2020-06-19 2020-08-18 贵州工业职业技术学院 A centering leveling device for engineering survey
CN212845939U (en) * 2020-08-07 2021-03-30 厦门康测土木工程有限公司 Laser range finder is used in concrete construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116817877A (en) * 2023-08-29 2023-09-29 中启胶建集团有限公司 Leveling device for topographic survey
CN116817877B (en) * 2023-08-29 2023-12-12 中启胶建集团有限公司 Leveling device for topographic survey

Also Published As

Publication number Publication date
CN113687374B (en) 2022-02-08

Similar Documents

Publication Publication Date Title
CN113687374B (en) Horizontal calibration mechanism for measuring visual angle for distance measurement
CN209910591U (en) Building engineering measuring equipment
CN109682354B (en) Contact measurement system and measurement method
CN108692797A (en) Float type level gauge calibrating installation peculiar to vessel
CN212510327U (en) Adjustable support of distancer for construction
CN105333866A (en) Laser level locator
CN111442769A (en) Supervision control method for super high-rise building engineering measurement
CN210036717U (en) Automatic leveling total powerstation base device
CN208752292U (en) A kind of bilayer prism support device
KR101909627B1 (en) Digital map manufacturing system to apply the geographical information Using a precise geographical data
CN111912339B (en) Laser ranging device and method for airplane
CN111156959A (en) Height difference auxiliary measuring device for level and using method
CN214954070U (en) Laser range finder correcting unit for civil engineering
CN219201909U (en) A calibration auxiliary housing for hand-held type laser rangefinder
CN215526116U (en) High-stability portable laser range finder
CN113091706A (en) Land planning levelness measuring device with self-balancing structure
CN219776700U (en) Laser scanning digital level
CN219109429U (en) Medical invasive pressure measurement zero calibration device
CN218781793U (en) Slope protection slope measuring mechanism for channel
CN220472622U (en) Fixing device of range finder
CN220339381U (en) Measuring device is built in room
CN218411213U (en) Horizontal calibration equipment for laser detector
CN217541897U (en) Centering and high-neutralization-quantity device adopting laser technology
CN114894166B (en) Vehicle-mounted automatic lifting and leveling system for measurement
CN211624690U (en) Real estate mapping device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant