CN208751556U - A kind of landform plotting board for building - Google Patents

A kind of landform plotting board for building Download PDF

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Publication number
CN208751556U
CN208751556U CN201821047913.9U CN201821047913U CN208751556U CN 208751556 U CN208751556 U CN 208751556U CN 201821047913 U CN201821047913 U CN 201821047913U CN 208751556 U CN208751556 U CN 208751556U
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China
Prior art keywords
fixedly connected
fixed
workbench
bar
placement plate
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CN201821047913.9U
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Chinese (zh)
Inventor
衣凤彬
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Guangzhou Long Bo Surveying And Mapping Technology Co Ltd
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Guangzhou Long Bo Surveying And Mapping Technology Co Ltd
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Abstract

The utility model discloses a kind of landform plotting boards for building, including workbench and placement plate, workbench upper surface is equipped with groove, placement plate is equipped in groove, fixed device is fixedly mounted in placement plate upper surface, it is equipped with to push inside workbench and compresses clamping device, promotion, which compresses clamping device and compresses bar fitting by elasticity, to be compressed and is fixedly connected with placement plate, workbench lower end surface is fixedly connected with slide bar, sliding bar is connected and fixed column, fixed column is fixedly connected with Steady base, workbench lower end surface articulated connection catch bar, fixed block is fixedly mounted in Steady base side wall, cardan wheel with brake is fixedly mounted in Steady base lower end surface.The utility model is convenient to carry out the user that mobile fixed, height adjustment adapts to different heights to device and uses, facilitates and carry out workbench leveling, conveniently can be convenient rotation to the instrument of surveying and mapping gripped and carry out 360 ° of mappings, and conveniently the placement plate of rotation is fixed, buffering plate improves the stability and service life of device.

Description

A kind of landform plotting board for building
Technical field
The utility model relates to architectural mapping technical field, specifically a kind of landform plotting board for building.
Background technique
Topographic survey, (topographic survey) referred to the operation of terrain map of survey and drawing.I.e. to the atural object of earth surface, Landform projected position in the horizontal plane and elevation are measured, and are reduced by a certain percentage, are depicted as ground with symbol and annotation The work of shape figure.Mapping when construction, needs to measure coordinate net, coordinate value, the measurement coordinate of place range (or it is fixed Position size), boundary lines of roads, building control line, land red-line, place neighbours are original and the position of road, the greenbelt etc. of planning The position of (main coordinate or location dimension) and key construction and structures, title, the number of plies, spacing etc., are being built When mapping, instrument of surveying and mapping be placed on plotting board works, but it is existing for placing mapping The mapping device of instrument is inconvenient to use, cannot carry out height adjustment according to the height of user, stability is poor, surveying instrument Device is inconvenient to fix after placing and inconvenience portion instrument of surveying and mapping is rotated, and construction is with a varied topography, existing mapping Device is inconvenient to carry out leveling fixation, it is therefore desirable to a kind of novel landform plotting board for building.
Summary of the invention
1, it to solve the problems, such as
It is inconvenient to use for the existing mapping device for placing mapping instrument, it cannot be according to user Height carry out height adjustment, stability is poor, and instrument of surveying and mapping is inconvenient to fix and inconvenience portion instrument of surveying and mapping is revolved after placing Turn, construction is with a varied topography, and existing mapping device is inconvenient to carry out the fixed problem of leveling, the mesh of the utility model Be a kind of landform plotting board for building is provided, to solve the problems mentioned in the above background technology.
2, technical solution
To achieve the above object, the utility model provides the following technical solutions:
A kind of landform plotting board for building, including workbench and placement plate, the workbench are hollow structure, the work Make platform upper surface equipped with groove, the groove is interior to be equipped with placement plate, and fixed device is fixedly mounted in the placement plate upper surface, described It is equipped with inside workbench to push and compresses clamping device, the promotion, which compresses clamping device and by elasticity compresses bar and be bonded, compresses fixation Placement plate is connected, the workbench lower end surface is fixedly connected with slide bar, and the sliding bar is connected and fixed column, and the fixed column is upper The hollow structure of end opening, and it is equipped with empty slot, the sliding bar connects empty slot, is equipped with support spring one, institute in the empty slot It states one both ends of the surface of support spring and is fixedly connected with slide bar and empty slot bottom, the fixed column is fixedly connected with Steady base, the fixation Column sidewall thread connects tight fixed bolt two, the workbench lower end surface articulated connection catch bar, and the connection catch bar is symmetrically set It sets, the hinged sliding block two in connection catch bar lower end, the sliding block two is slidably connected sliding slot three, and the sliding slot three is fixedly mounted on Steady base upper surface, the sliding block two are fixedly connected with hydraulic telescopic rod, and the hydraulic telescopic rod is fixedly connected with the defeated of hydraulic cylinder Outlet, the hydraulic cylinder are fixedly mounted on Steady base upper surface;Fixed block is fixedly mounted in the Steady base side wall, described steady Determine pedestal lower end surface and cardan wheel with brake is fixedly mounted.
As a further solution of the present invention: the fixed device includes push rod, grip block and fixed block, it is described solid Determine block and be fixedly connected with placement plate, and be symmetrically arranged with two, the fixed block is equipped with through hole, and the push rod sliding is connected and fixed Through hole on block, the push rod fixing joint grip block, elastic cushion is fixedly mounted in the grip block other end, described solid Determine block threaded upper ends connection tight fixed bolt one.
The placement plate is the recessed cylindrical structure of lower end surface opening as a further solution of the present invention, described Placement plate lower end surface is fixedly connected with sliding block one, and the sliding block one is slidably connected sliding slot two, and the sliding slot two is fixedly mounted on groove Bottom, the sliding slot two are annular groove, and the placement plate lower end surface is fixedly connected with first rotating shaft, and the first rotating shaft passes through close It seals bearing and is rotatablely connected bottom portion of groove.
It includes rack gear, gear and elasticity that the promotion, which compresses clamping device, as a further solution of the present invention, Bar is compressed, connection slide bar is fixedly mounted in the upper end of the rack face, and the connection sliding bar connects sliding slot one, and the sliding slot one is solid Dingan County is mounted in workbench inner upper end face, and the rack gear engages connection gear, and the gear is fixedly mounted in the second shaft, institute It states the second shaft and workbench inner wall, the second shaft through part workbench is rotatablely connected by sealing bearing, and be fixedly connected Rocking bar, the rack gear left end face are fixedly connected with elasticity and compress bar, and the elasticity compresses bar left end face and is fixedly connected with sucker, institute It states elasticity and compresses bar and be equipped with through-hole through workbench and placement plate is fixedly connected with by sucker.
The Steady base includes lower bottom base and upper plate, the bottom as a further solution of the present invention, Seat is hollow structure, and seal chamber one is equipped in the lower bottom base, and one inner wall of seal chamber is flexibly connected piston one, the piston One is fixedly connected with sliding bar, and the sliding bar upper end is fixedly connected with upper plate, and the outer noose damping spring of the sliding bar is described to subtract Shake both ends of the spring face is fixedly connected with upper plate and lower bottom base, and the seal chamber one is connected in fixed cylinder by L-type connecting tube, described It is sealing structure inside fixed cylinder, be slidably connected piston two in the fixed cylinder, and two upper surface of piston is fixedly connected with support Spring two, the support spring two are fixedly connected with upper plate.
There are three the fixed block is set as a further solution of the present invention, and distribution triangular in shape, it is described solid Determine block and be threadedly coupled threaded rod, the threaded rod upper surface is fixedly connected with stubborn, and taper is fixedly mounted in the threaded rod lower end surface Jointing plate is fixedly mounted in head, the threaded rod lower end.
3, beneficial effect
Compared with prior art, the utility model has the beneficial effects that
(1) the utility model is structurally reasonable easy to use, conveniently carries out mobile fixed, progress height to device and adjusts and adapt to The user of different heights uses, facilitates progress workbench leveling, conveniently presss from both sides to the instrument of surveying and mapping placed on the table Fixation is held, 360 ° of mappings of rotation progress can be convenient to instrument of surveying and mapping and conveniently the placement plate of rotation is fixed, buffer bottom Seat improves the stability and service life of device.
(2) the fixation device of the utility model is convenient grips instrument of surveying and mapping, and push rod is pushed to use grip block Instrument of surveying and mapping is gripped, tight fixed bolt a pair of push rods is screwed and carries out conflict fixation, instrument of surveying and mapping is fixedly mounted on In placement plate.
(3) placement plate of the utility model can rotate, and fixed instrument of surveying and mapping in placement plate is allowed to carry out 360 ° Rotation.
(4) promotion of the utility model compresses the placement plate after clamping device conveniently adjusts the angle rotation and is fixed, It is rotated after avoiding placement plate from touching.
(5) Steady base of the utility model is put down horizontal to dress by damping spring and seal chamber one and the gas of fixed cylinder Carry out damping, buffering is set, the stability of device is improved.
(6) stubborn of the utility model moves down threaded rod, so that jointing plate and ground face contact, three are in triangle The jointing plate and threaded rod of shape distribution level device, and jointing plate increases the fitting area with ground.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of landform plotting board for building.
Fig. 2 is a kind of structural schematic diagram of Steady base in landform plotting board for building.
Fig. 3 is a kind of schematic perspective view of threaded rod in landform plotting board for building.
Fig. 4 is a kind of structural schematic diagram of partial enlargement at A in landform plotting board for building.
Fig. 5 is a kind of top view of landform plotting board for building.
In figure: 1, workbench;2, fixed device;3, push rod;4, tight fixed bolt one;5, grip block;6, placement plate;7, One shaft;8, sliding block one;9, catch bar is connected;10, slide bar;11, tight fixed bolt two;12, fixed column;13, support spring one; 14, hydraulic telescopic rod;15, hydraulic cylinder;16, sliding block two;17, handle is twisted;18, threaded rod;19, fixed block;20, jointing plate;21, it bores Forming head;22, cardan wheel with brake;23, Steady base;24, groove;25, rocking bar;26, rack gear;27, gear;28, the second shaft; 29, through-hole;30, sliding slot one;31, slide bar is connected;32, elasticity compresses bar;33, seal chamber one;34, piston one;35, L-type connects Pipe;36, fixed cylinder;37, piston two;38, support spring two;39, lower bottom base;40, upper plate;41, damping spring;42, it slides Bar.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1~5, in the utility model embodiment, a kind of landform plotting board for building, including 1 He of workbench Placement plate 6, the workbench 1 are hollow structure, and 1 upper surface of workbench is equipped with groove 24, is equipped with placement plate 6 in groove 24, puts It sets 6 upper surface of plate and fixed device 2 is fixedly mounted, promotion is equipped with inside workbench 1 and compresses clamping device, promotion compresses clamping device It compresses the fitting of bar 32 by elasticity to compress and be fixedly connected with placement plate 6,1 lower end surface of workbench is fixedly connected with slide bar 10, and slide bar 10 is sliding Dynamic to be connected and fixed column 12, fixed column 12 is the hollow structure of upper end opening, and is equipped with empty slot, and slide bar 10 is slidably connected empty slot, empty Support spring 1 is equipped in slot, one 13 both ends of the surface of support spring are fixedly connected with slide bar 10 and empty slot bottom, and fixed column 12 is fixed Stable connection pedestal 23,12 sidewall thread of fixed column connect tight fixed bolt 2 11,1 lower end surface of workbench articulated connection catch bar 9, fixed block 19 is fixedly mounted in 23 side wall of Steady base, there are three fixed block 19 is set, and distribution triangular in shape, under Steady base 23 Cardan wheel with brake 22 is fixedly mounted in end face.
The fixed device 2 includes push rod 3, grip block 5 and fixed block, and fixed block is fixedly connected with placement plate 6, and symmetrically sets There are two, fixed block is equipped with through hole, and push rod 3 is slidably connected the through hole on fixed block, 3 fixing joint grip block 5 of push rod, Elastic cushion is fixedly mounted in 5 other end of grip block, and upper end of fixing block is threadedly coupled tight fixed bolt 1, and push rod 3 is pushed to use folder It holds block 5 to grip instrument of surveying and mapping, screws one 4 pairs of push rods 3 of tight fixed bolt and carry out conflict fixation, instrument of surveying and mapping is fixed It is mounted in placement plate 6.
The placement plate 6 is the recessed cylindrical structure of lower end surface opening, and 6 lower end surface of placement plate is fixedly connected with sliding block 1, sliding block One 8 are slidably connected sliding slot two, and sliding slot two is fixedly mounted on 24 bottom of groove, and sliding slot two is annular groove, and 6 lower end surface of placement plate is solid Surely first rotating shaft 7 is connected, first rotating shaft 7 is rotatablely connected 24 bottom of groove by sealing bearing.
It includes that rack gear 26, gear 27 and elasticity compress bar 32 that the promotion, which compresses clamping device, and 26 upper surface of rack gear is fixed Installation connection slide bar 31, connection slide bar 31 are slidably connected sliding slot 1, and sliding slot 1 is fixedly mounted on 1 inner upper end of workbench Face, rack gear 26 engage connection gear 27, and gear 27 is fixedly mounted in the second shaft 28, and the second shaft 28 is turned by sealing bearing Dynamic 1 inner wall of connecting working table, 28 through part workbench 1 of the second shaft, and it is fixedly connected with rocking bar 25,26 left end face of rack gear is fixed Connection elasticity compresses bar 32, and elasticity compresses 32 left end face of bar and is fixedly connected with sucker, and elasticity compresses bar 32 and sets on workbench 1 There is through-hole 29 to be fixedly connected with placement plate 6 by sucker.
The connection catch bar 9 is symmetrical arranged, and connects the hinged sliding block 2 16 in 9 lower end of catch bar, and sliding block 2 16 is slidably connected Sliding slot three, sliding slot three are fixedly mounted on 23 upper surface of Steady base, and sliding block 2 16 is fixedly connected with hydraulic telescopic rod 14, hydraulically extensible Bar 14 is fixedly connected with the output end of hydraulic cylinder 15, and hydraulic cylinder 15 is fixedly mounted on 23 upper surface of Steady base.
The Steady base 23 includes lower bottom base 39 and upper plate 40, and lower bottom base 39 is hollow structure, is set in lower bottom base 39 There is seal chamber 1, one 33 inner wall of seal chamber is flexibly connected piston 1, and piston 1 is fixedly connected with sliding bar 42, sliding bar 42 Upper end is fixedly connected with upper plate 40, the outer noose damping spring 41 of sliding bar 42, and 41 both ends of the surface of damping spring are fixedly connected with upper plate 40 and lower bottom base 39, seal chamber 1 is connected in fixed cylinder 36 by L-type connecting tube 35, is sealing structure inside fixed cylinder 36, Be slidably connected piston 2 37 in fixed cylinder 36, and 2 37 upper surface of piston is fixedly connected with support spring 2 38, and support spring 2 38 is solid Surely upper plate 40 is connected.
The fixed block 19 is threadedly coupled threaded rod 18, and 18 upper surface of threaded rod, which is fixedly connected, twists 17, under threaded rod 18 Conical head 21 is fixedly mounted in end face, and 18 lower end of threaded rod is fixedly mounted jointing plate 20, after device is fixed, turns 17 So that threaded rod 18 moves down, so that jointing plate 20 and ground face contact, the jointing plate 20 and screw thread of three distributions triangular in shape Bar 18 levels device, and jointing plate 20 increases the fitting area with ground.
The working principle of the utility model is: push rod 3 is pushed to grip using grip block 5 to instrument of surveying and mapping, revolve Tight one 4 pairs of push rods 3 of tight fixed bolt carry out conflict fixation, and instrument of surveying and mapping is fixedly mounted in placement plate 6, and shaking rocking bar 25 makes Placement plate 6 is fixed in elastic bar 32 and the sucker of compressing, it is convenient to being fixed on 6 top of placement plate using first rotating shaft 7 Instrument of surveying and mapping is rotated, and avoids needing to retighten when rotation instrument of surveying and mapping, the fixed sliding block 2 16 of hydraulic cylinder 15 slides, band Dynamic connection catch bar 9 is mobile, carries out control adjustment to the height of workbench 1, merges using tight slide bar 10 and matching for fixed column 12 Determine bolt 2 11 to be fixed, improve 1 stability of workbench, cardan wheel with brake 22 is convenient to be moved and fixed to device, is made 17 threaded rod 18 is moved down with turning, so that jointing plate 20 and ground face contact, the patch of three distributions triangular in shape Plywood 20 and threaded rod 18 level device, and jointing plate 20 increases the fitting area with ground, and Steady base 23 improves dress The stability and Anti-seismic set, improve the service life of device.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (6)

1. a kind of landform plotting board for building, including workbench (1) and placement plate (6), which is characterized in that the workbench It (1) is hollow structure, workbench (1) upper surface is equipped with groove (24), is equipped with placement plate (6) in the groove (24), institute It states placement plate (6) upper surface to be fixedly mounted fixed device (2), promotion is equipped with inside the workbench (1) and compresses clamping device, institute It states promotion and compresses clamping device bar (32) fitting is compressed by elasticity and compress and be fixedly connected placement plate (6), under the workbench (1) End face is fixedly connected slide bar (10), and the slide bar (10) is slidably connected fixed column (12), and the fixed column (12) is upper end opening Hollow structure, and be equipped with empty slot, the slide bar (10) is slidably connected empty slot, support spring one (13) is equipped in the empty slot, Support spring one (13) both ends of the surface are fixedly connected with slide bar (10) and empty slot bottom, and the fixed column (12) is fixedly connected with stabilization Pedestal (23), fixed column (12) sidewall thread connect tight fixed bolt two (11), workbench (1) the lower end surface articulated connection Catch bar (9), the connection catch bar (9) are symmetrical arranged, and the hinged sliding block two (16) in connection catch bar (9) lower end is described Sliding block two (16) is slidably connected sliding slot three, and the sliding slot three is fixedly mounted on Steady base (23) upper surface, the sliding block two (16) it is fixedly connected hydraulic telescopic rod (14), the hydraulic telescopic rod (14) is fixedly connected with the output end of hydraulic cylinder (15), described Hydraulic cylinder (15) is fixedly mounted on Steady base (23) upper surface;Fixed block is fixedly mounted in Steady base (23) side wall (19), cardan wheel with brake (22) are fixedly mounted in Steady base (23) lower end surface.
2. a kind of landform plotting board for building according to claim 1, which is characterized in that fixed device (2) packet Push rod (3), grip block (5) and fixed block are included, the fixed block is fixedly connected with placement plate (6), and is symmetrically arranged with two, described solid Determine block equipped with through hole, the push rod (3) is slidably connected the through hole on fixed block, push rod (3) the fixing joint clamping Elastic cushion is fixedly mounted in block (5), grip block (5) other end, and the upper end of fixing block is threadedly coupled tight fixed bolt one (4)。
3. a kind of landform plotting board for building according to claim 1, which is characterized in that under the placement plate (6) is The recessed cylindrical structure of end face opening, placement plate (6) lower end surface are fixedly connected with sliding block one (8), and sliding block one (8) sliding connects Sliding slot two is connect, the sliding slot two is fixedly mounted on groove (24) bottom, and the sliding slot two is annular groove, the placement plate (6) Lower end surface is fixedly connected first rotating shaft (7), and the first rotating shaft (7) is rotatablely connected groove (24) bottom by sealing bearing.
4. a kind of landform plotting board for building according to claim 1, which is characterized in that the promotion compresses clamping dress It sets and is compressed bar (32) including rack gear (26), gear (27) and elasticity, connection slide bar is fixedly mounted in rack gear (26) upper surface (31), the connection slide bar (31) is slidably connected sliding slot one (30), and it is internal that the sliding slot one (30) is fixedly mounted on workbench (1) Upper surface, the rack gear (26) engage connection gear (27), and the gear (27) is fixedly mounted on the second shaft (28), described Second shaft (28) is rotatablely connected workbench (1) inner wall, the second shaft (28) through part workbench by sealing bearing (1), it and is fixedly connected rocking bar (25), rack gear (26) left end face is fixedly connected with elasticity and compresses bar (32), and the elasticity is supported Compression bar (32) left end face is fixedly connected with sucker, and it is logical equipped with through-hole (29) through workbench (1) that the elasticity compresses bar (32) It crosses sucker and is fixedly connected with placement plate (6).
5. a kind of landform plotting board for building according to claim 1, which is characterized in that Steady base (23) packet Lower bottom base (39) and upper plate (40) are included, the lower bottom base (39) is hollow structure, is equipped with seal chamber in the lower bottom base (39) One (33), seal chamber one (33) inner wall are flexibly connected piston one (34), and the piston one (34) is fixedly connected with sliding bar (42), sliding bar (42) upper end is fixedly connected upper plate (40), the outer noose damping spring (41) of sliding bar (42), institute It states damping spring (41) both ends of the surface and is fixedly connected with upper plate (40) and lower bottom base (39), the seal chamber one (33) is connected by L-type It takes in (35) connection fixed cylinder (36), is sealing structure inside the fixed cylinder (36), sliding connects in the fixed cylinder (36) It takes over a job plug two (37), piston two (37) upper surface is fixedly connected with support spring two (38), and the support spring two (38) is solid Surely upper plate (40) are connected.
6. a kind of landform plotting board for building according to claim 1, which is characterized in that the fixed block (19) is equipped with Three, and distribution triangular in shape, the fixed block (19) are threadedly coupled threaded rod (18), threaded rod (18) upper surface is fixed Connection is twisted (17), and conical head (21) are fixedly mounted in threaded rod (18) lower end surface, the fixed peace in threaded rod (18) lower end It fills jointing plate (20).
CN201821047913.9U 2018-07-03 2018-07-03 A kind of landform plotting board for building Active CN208751556U (en)

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Application Number Priority Date Filing Date Title
CN201821047913.9U CN208751556U (en) 2018-07-03 2018-07-03 A kind of landform plotting board for building

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Application Number Priority Date Filing Date Title
CN201821047913.9U CN208751556U (en) 2018-07-03 2018-07-03 A kind of landform plotting board for building

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CN208751556U true CN208751556U (en) 2019-04-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109366436A (en) * 2018-12-10 2019-02-22 禹州市靓佳工艺品有限公司 A kind of fixed device of aid for wig
CN112432660A (en) * 2020-10-30 2021-03-02 中交投资南京有限公司 Online monitoring device and monitoring method for safety of steel supporting structure
CN112504249A (en) * 2020-12-16 2021-03-16 浙江科特地理信息技术有限公司 Surveying instrument
CN112903343A (en) * 2021-01-25 2021-06-04 通化师范学院 Geographic data collection device and collection method thereof
CN113154194A (en) * 2021-02-24 2021-07-23 刘须劲 Surveying instrument support convenient for accurate adjustment and connecting method thereof
CN114001247A (en) * 2021-10-29 2022-02-01 袁犁 Mapping device for geographic information and using method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109366436A (en) * 2018-12-10 2019-02-22 禹州市靓佳工艺品有限公司 A kind of fixed device of aid for wig
CN112432660A (en) * 2020-10-30 2021-03-02 中交投资南京有限公司 Online monitoring device and monitoring method for safety of steel supporting structure
CN112504249A (en) * 2020-12-16 2021-03-16 浙江科特地理信息技术有限公司 Surveying instrument
CN112903343A (en) * 2021-01-25 2021-06-04 通化师范学院 Geographic data collection device and collection method thereof
CN113154194A (en) * 2021-02-24 2021-07-23 刘须劲 Surveying instrument support convenient for accurate adjustment and connecting method thereof
CN114001247A (en) * 2021-10-29 2022-02-01 袁犁 Mapping device for geographic information and using method thereof

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