CN113804156A - Surveyor's level balancing stand is used in engineering survey - Google Patents
Surveyor's level balancing stand is used in engineering survey Download PDFInfo
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- CN113804156A CN113804156A CN202111191648.8A CN202111191648A CN113804156A CN 113804156 A CN113804156 A CN 113804156A CN 202111191648 A CN202111191648 A CN 202111191648A CN 113804156 A CN113804156 A CN 113804156A
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- 239000007788 liquid Substances 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000011835 investigation Methods 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 15
- 238000000429 assembly Methods 0.000 abstract description 15
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the technical field related to engineering measurement, and discloses a level balance frame for engineering measurement investigation, which comprises a mounting plate and also comprises: the leg supporting mechanisms comprise screw lifting components rotationally connected to the mounting plate and positioning driving components connected to the screw lifting components; the opening mechanism is connected with the horizontal control mechanism; the horizontal control mechanism is connected to the mounting plate and comprises a horizontal control groove arranged in the mounting plate, three liquid pipe assemblies and three infrared measuring assemblies are arranged in the horizontal control groove, the three infrared measuring assemblies are arranged on two sides of the three liquid pipe assemblies, and the three liquid pipe assemblies and the three infrared measuring assemblies are respectively connected with the three leg supporting mechanisms.
Description
Technical Field
The invention relates to the technical field related to engineering measurement, in particular to a leveling instrument balance frame for engineering measurement investigation.
Background
The level is an instrument for establishing a horizontal sight line to measure the height difference between two points on the ground. The principle is to measure the height difference between ground points according to the leveling principle. The main components are hopeful to be a telescope, a tube level gauge (or compensator), a vertical shaft, a base and a foot screw. It is divided into a micro-tilt level, an automatic leveling level, a laser level and a digital level (also called an electronic level) according to the structure. The precision level is divided into a precision level and a common level according to the precision.
At present, the engineering survey spirit level adopts the tripod to support mostly, when the levelness of tripod is adjusted to needs, needs the staff repeated to carry out manual regulation to three supporting legs of group, and it is slow to adjust efficiency, seriously influences work efficiency.
Disclosure of Invention
The invention aims to provide a leveling instrument balance frame for engineering survey, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an engineering survey is surveyed and is used surveyor's level balancing stand, includes the mounting panel, still includes:
the leg supporting mechanism comprises a screw lifting assembly and a positioning driving assembly, wherein the screw lifting assembly is rotationally connected to the mounting plate, the positioning driving assembly is connected to the screw lifting assembly, and the leg supporting mechanism is driven by the positioning driving assembly to lift and adjust the height of the leg supporting mechanism;
the stretching mechanism is connected to the horizontal control mechanism and used for driving the three groups of leg supporting mechanisms to stretch;
the horizontal control mechanism of connection on the mounting panel, horizontal control mechanism is including setting up the horizontal control groove in the mounting panel, and horizontal control inslot is provided with three liquid pipe subassemblies of group and sets up the three infrared measuring component of group in three liquid pipe subassembly both sides, and three liquid pipe subassemblies of group are connected with three leg supporting mechanism of group respectively with three infrared measuring component of group, horizontal control mechanism measures the levelness of mounting panel through the setting of three liquid pipe subassemblies of group, later reads the levelness of the mounting panel that the measurement reachs through three infrared measuring component of group to through the control to three leg supporting mechanism of group, adjust three leg supporting mechanism's of group height, thereby adjust the levelness of mounting panel.
As a further scheme of the invention: the screw rod lifting assembly comprises a connecting rod, one end of the connecting rod is connected to one side of the mounting plate in a rotating mode, the other end of the connecting rod is fixedly connected with a first connecting plate, a fixing rod is fixedly connected to one side of the first connecting plate, a second connecting plate is fixedly connected to the other end of the fixing rod, a screw rod is connected to the second connecting plate in a rotating mode, a supporting leg is arranged on one side of the second connecting plate, a connecting cylinder is arranged in the supporting leg and is connected to the connecting cylinder in a sliding mode, a threaded hole is formed in one end, close to the second connecting plate, of the connecting cylinder, and the screw rod is connected with the thread hole in an inner thread mode.
As a further scheme of the invention: the positioning driving assembly comprises positioning cylinders fixedly connected to two sides of the supporting leg, positioning rods are fixedly connected to the second connecting plate and connected to the positioning cylinders in a sliding mode, motors are fixedly connected to the other side of the second connecting plate, and output shafts of the motors penetrate through the second connecting plate and are fixedly connected to the screw rods.
As a further scheme of the invention: the opening mechanism comprises a sliding rod fixedly connected to the mounting plate, a sliding block is connected to the sliding rod in a sliding mode, three groups of rotating support rods are connected to the sliding block in a rotating mode, the other ends of the three groups of rotating support rods are connected to three groups of supporting legs in a rotating mode respectively, and bolts are screwed by hands in the sliding block in a threaded connection mode.
As a further scheme of the invention: the liquid pipe assembly comprises a plurality of groups of fixing blocks fixedly connected in the horizontal control groove, a liquid pipe is fixedly connected between the fixing blocks, filling liquid is filled in the liquid pipe, and bubbles are arranged in the filling liquid.
As a further scheme of the invention: the liquid tube is made of transparent material, and a light absorption solvent is dissolved in the filling liquid.
As a further scheme of the invention: the infrared measurement subassembly includes two sets of curb plates of fixed connection in the liquid pipe both sides, fixedly connected with multiunit evenly distributed's infra-red transmitter on a set of curb plate, the mutual infrared inductor that corresponds of fixedly connected with multiunit and infra-red transmitter on another group's curb plate, curb plate one side is provided with analysis controller simultaneously, analysis controller's signal reception end infrared inductor is connected, analysis controller's signal output part is connected rather than a set of motor of corresponding and controls opening of this group of motor and stop.
As a still further scheme of the invention: one side of the mounting plate, which is far away from the connecting block, is connected with a level gauge.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the three groups of leg supporting mechanisms are driven by the stretching mechanism to stretch, so that the mounting plate is supported and fixed, then the levelness of the mounting plate is measured by the horizontal control mechanism through the arrangement of the three groups of liquid pipe assemblies, the levelness of the mounting plate obtained through measurement is read by the three groups of infrared measurement assemblies, and the leg supporting mechanism is controlled by the three groups of leg supporting mechanisms and is driven by the positioning driving assembly to lift the screw lifting assembly to adjust the height of the leg supporting mechanism, so that the levelness of the mounting plate is adjusted.
Drawings
Fig. 1 is a schematic view of an internal structure of a leveling instrument balance frame for engineering surveying and investigation according to the present invention.
Fig. 2 is a schematic structural view of a leveling instrument balance frame for engineering survey according to the present invention.
Fig. 3 is a cross-sectional view of a leveling instrument balance frame for engineering survey according to the present invention.
Fig. 4 is a partially enlarged view of point a in fig. 3.
Fig. 5 is a top sectional view of a leveling instrument balance frame for engineering survey according to the present invention.
Fig. 6 is a front view of a leveling instrument balance frame for engineering survey according to the present invention.
In the figure: 1-mounting plate, 2-connecting rod, 3-first connecting plate, 4-fixing rod, 5-second connecting rod, 6-motor, 7-screw rod, 8-supporting foot, 9-connecting cylinder, 10-positioning cylinder, 11-positioning rod, 12-sliding rod, 13-sliding block, 14-hand bolt, 15-rotating supporting rod, 16-horizontal control groove, 17-fixing block, 18-liquid pipe, 19-side plate, 20-infrared emitter, 21-infrared inductor, 22-analysis controller, 23-filling liquid, 24-air bubble, 25-level meter, 26-threaded hole, 27-leg supporting mechanism, 28-screw rod lifting component, 29-positioning driving component, 30-opening mechanism, 31-level control mechanism, 32-liquid pipe assembly and 33-infrared measuring assembly.
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 obtained by a person skilled in the art without making any inventive step based on the embodiments of the present invention shall fall within the scope of protection of the present invention, and the present invention shall be described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 6, in an embodiment of the present invention, a leveling instrument balance frame for engineering survey includes an installation plate 1, and further includes: the three groups of leg supporting mechanisms 27 are connected to the mounting plate 1, and the leg supporting mechanisms 27 comprise a screw rod lifting assembly 28 which is rotatably connected to the mounting plate 1 and a positioning driving assembly 29 which is connected to the screw rod lifting assembly 28; an opening mechanism 30 connected to the mounting plate 1; the horizontal control mechanism 31 is connected to the mounting plate 1, the horizontal control mechanism 31 comprises a horizontal control groove 16 arranged in the mounting plate 1, three groups of liquid pipe assemblies 32 and three groups of infrared measurement assemblies 33 arranged on two sides of the three groups of liquid pipe assemblies 32 are arranged in the horizontal control groove 16, and the three groups of liquid pipe assemblies 32 and the three groups of infrared measurement assemblies 33 are respectively connected with the three groups of leg support mechanisms 27, the invention drives the three groups of leg support mechanisms 27 to open through an opening mechanism 30 so as to support and fix the mounting plate 1, then the horizontal control mechanism 31 measures the levelness of the mounting plate 1 through the arrangement of the three groups of liquid pipe assemblies 32, reads the levelness of the mounting plate 1 obtained through measurement of the three groups of infrared measurement assemblies 33, and drives the screw rod lifting assembly 28 to lift through the positioning drive assembly 29 so as to adjust the height of the leg support mechanisms 27 through the control of the three groups of leg support mechanisms 27, thereby adjusting the levelness of the mounting plate 1.
In one aspect of the present embodiment, referring to fig. 2 and 3, the screw lifting assembly 28 includes a connecting rod 2 rotatably connected to one side of the mounting plate 1 at one end, a first connecting plate 3 fixedly connected to the other end of the connecting rod 2, a fixing rod 4 fixedly connected to one side of the first connecting plate 3, a second connecting plate 5 fixedly connected to the other end of the fixing rod 4, a screw 7 rotatably connected to the second connecting plate 5, one side of the second connecting plate 5 is provided with a supporting foot 8, a connecting cylinder 9 is arranged in the supporting foot 8, a screw 7 is connected in the connecting cylinder 9 in a sliding way, one end of the connecting cylinder 9 close to the second connecting plate 5 is provided with a threaded hole 26, the screw 7 is in threaded connection with the threaded hole 26, the screw lifting assembly 28 reversely drives the screw 7 to lift in the connecting cylinder 9 through the rotation of the screw 7 and the threaded connection between the screw 7 and the threaded hole 26 so as to adjust the height of the connecting rod 2.
In a situation of this embodiment, please refer to fig. 2, the positioning driving assembly 29 includes a positioning cylinder 10 fixedly connected to two sides of the supporting foot 8, a positioning rod 11 is fixedly connected to the second connecting plate 5, the positioning rod 11 is slidably connected to the positioning cylinder 10, a motor 6 is fixedly connected to the other side of the second connecting plate 5, an output shaft of the motor 6 passes through the second connecting plate 5 and is fixedly connected to the screw 7, and the positioning driving assembly 29 axially positions the supporting foot 8 through the sliding connection between the positioning rod 11 and the positioning cylinder 10, and drives the screw 7 to rotate through the motor 6.
In a case of this embodiment, please refer to fig. 3, the opening mechanism 30 includes a slide rod 12 fixedly connected to the mounting plate 1, a sliding block 13 is slidably connected to the slide rod 12, three sets of rotation support rods 15 are rotatably connected to the sliding block 13, the other ends of the three sets of rotation support rods 15 are respectively rotatably connected to the three sets of support feet 8, a hand-tightening bolt 14 is connected to the sliding block 13 in a threaded manner, the opening mechanism 30 fixes the sliding block 13 to the slide rod 12 through the setting of the hand-tightening bolt 14, and when the support feet 8 need to be opened later, the sliding block 13 and the slide rod 12 are loosened by loosening the hand-tightening bolt 14, at this time, the sliding block 13 drives the rotation support rods 15 to rotate and open, and the rotation support rods 15 drives the three sets of support feet 8 to open.
In one aspect of this embodiment, referring to fig. 4, the liquid pipe assembly 32 includes a plurality of sets of fixed blocks 17 fixedly connected in the level control groove 16, a liquid pipe 18 is fixedly connected between the fixed blocks 17, the liquid pipe 18 is filled with a filling liquid 23, bubbles 24 are filled in the filling liquid 23, the liquid pipe 18 is made of a transparent material, a light absorbing solvent is dissolved in the filling liquid 23, the liquid pipe assembly 32 measures the levelness of the mounting plate 1 through the arrangement of the bubbles 24 in the liquid pipe 18, the mounting plate 1 is kept horizontal when the bubbles 24 in the liquid pipe 18 are located at a middle position in the liquid pipe 18, and the mounting plate 1 is inclined when the bubbles 24 are not located at the middle position in the liquid pipe 18.
In one aspect of this embodiment, referring to fig. 5, the infrared measurement assembly 33 includes two sets of side plates 19 fixedly connected to two sides of the liquid tube 18, a plurality of sets of infrared emitters 20 uniformly distributed are fixedly connected to one set of side plates 19, a plurality of sets of infrared sensors 21 corresponding to the infrared emitters 20 are fixedly connected to the other set of side plates 19, an analysis controller 22 is disposed on one side of the side plates 19, a signal receiving end of the analysis controller 22 is connected to the infrared sensor 21, a signal output end of the analysis controller 22 is connected to a corresponding set of electric motor 6 and controls start and stop of the set of electric motor 6, the infrared measurement assembly 33 emits infrared rays to the liquid tube 18 through the infrared emitter 20, wherein the infrared rays at the positions of the degassing bubbles 24 are absorbed by the filling liquid 23 dissolved with the light absorbing solvent and cannot pass through the liquid tube 18, the infrared rays at the positions of the bubbles 24 pass through the liquid tube 18 and are received by the infrared sensor 21, the position of the air bubbles 24 in the liquid pipe 18 is read, the positions of the three groups of air bubbles 24 are analyzed by the analysis controller 22, the inclination direction of the mounting plate 1 is read, and the motor 6 is controlled by the analysis controller 22, so that the levelness of the mounting plate 1 is adjusted.
In a case of this embodiment, referring to fig. 2, a side of the mounting plate 1 away from the connecting block 2 is connected to a level 25, and the present invention observes a real-time levelness of the mounting plate 1 during an adjustment process through the setting of the level 25.
The working principle of the invention is as follows: according to the invention, the slide block 13 is fixed on the slide rod 12 through the arrangement of the hand screw bolt 14, and then when the supporting feet 8 need to be opened, firstly the slide block 13 and the slide rod 12 are loosened through loosening the hand screw bolt 14, at the moment, the slide block 13 drives the rotary supporting rod 15 to rotate and open through moving the slide block 13, the rotary supporting rod 15 drives the three groups of supporting feet 8 to open, the mounting plate 1 is supported and fixed, then the levelness of the mounting plate 1 is measured through the arrangement of the bubbles 24 in the liquid pipe 18, when the bubbles 24 in the liquid pipe 18 are positioned at the middle position in the liquid pipe 18, the mounting plate 1 is kept horizontal, otherwise, when the bubbles 24 are not positioned at the middle position in the liquid pipe 18, the mounting plate 1 is in an inclined state, then the infrared emitter 20 emits infrared rays to the liquid pipe 18, wherein the infrared rays at the positions where the bubbles 24 are all absorbed by the filling liquid 23 dissolved with the light-absorbing solvent and cannot pass through the liquid pipe 18, the infrared ray of the position of the bubble 24 penetrates through the liquid pipe 18 to be received by the infrared sensor 21, so that different positions of the bubble 24 in the three liquid pipes 18 are read, then the position of the three bubbles 24 is analyzed through the analysis controller 22 to read the inclination direction of the mounting plate 1, and then the analysis controller 22 controls the motor 6, at the moment, the axial positioning of the supporting leg 8 is carried out through the sliding connection of the positioning rod 11 and the positioning cylinder 10, meanwhile, the motor 6 drives the screw 7 to rotate, the screw 7 reversely drives the screw 7 to lift in the connecting cylinder 9 through the threaded connection with the threaded hole 26, and further, the height of the connecting rod 2 is adjusted so as to adjust the levelness of the mounting plate 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides an engineering survey is surveyd and is used surveyor's level balancing stand, includes the mounting panel, its characterized in that still includes:
the leg supporting mechanism comprises a screw lifting assembly and a positioning driving assembly, wherein the screw lifting assembly is rotationally connected to the mounting plate, the positioning driving assembly is connected to the screw lifting assembly, and the leg supporting mechanism is driven by the positioning driving assembly to lift and adjust the height of the leg supporting mechanism;
the stretching mechanism is connected to the horizontal control mechanism and used for driving the three groups of leg supporting mechanisms to stretch;
the horizontal control mechanism of connection on the mounting panel, horizontal control mechanism is including setting up the horizontal control groove in the mounting panel, and horizontal control inslot is provided with three liquid pipe subassemblies of group and sets up the three infrared measuring component of group in three liquid pipe subassembly both sides, and three liquid pipe subassemblies of group are connected with three leg supporting mechanism of group respectively with three infrared measuring component of group, horizontal control mechanism measures the levelness of mounting panel through the setting of three liquid pipe subassemblies of group, later reads the levelness of the mounting panel that the measurement reachs through three infrared measuring component of group to through the control to three leg supporting mechanism of group, adjust three leg supporting mechanism's of group height, thereby adjust the levelness of mounting panel.
2. The level balance frame for engineering survey according to claim 1, wherein the screw lifting assembly comprises a connecting rod with one end rotatably connected to one side of the mounting plate, the other end of the connecting rod is fixedly connected with a first connecting plate, a fixing rod is fixedly connected to one side of the first connecting plate, the other end of the fixing rod is fixedly connected with a second connecting plate, a screw is rotatably connected to the second connecting plate, one side of the second connecting plate is provided with supporting legs, connecting cylinders are arranged in the supporting legs, the screw is slidably connected in the connecting cylinders, one ends of the connecting cylinders, which are close to the second connecting plate, are provided with threaded holes, and the screw is in threaded connection with the threaded holes.
3. The level balance frame of claim 2, wherein the positioning driving assembly comprises a positioning cylinder fixedly connected to two sides of the supporting leg, a positioning rod is fixedly connected to the second connecting plate, the positioning rod is slidably connected to the positioning cylinder, a motor is fixedly connected to the other side of the second connecting plate, and an output shaft of the motor passes through the second connecting plate and is fixedly connected to the screw rod.
4. The level gauge balancing stand for engineering surveying and investigation of claim 2, wherein the opening mechanism comprises a sliding rod fixedly connected to the mounting plate, a sliding block is slidably connected to the sliding rod, three sets of rotation support rods are rotatably connected to the sliding block, the other ends of the three sets of rotation support rods are rotatably connected to three sets of support legs respectively, and a hand-tightening bolt is screwed in the sliding block.
5. The level gauge balancing stand for engineering surveying investigation of claim 1, wherein the liquid pipe assembly comprises a plurality of sets of fixed blocks fixedly connected in the horizontal control groove, a liquid pipe is fixedly connected between the fixed blocks, a filling liquid is filled in the liquid pipe, and air bubbles are contained in the filling liquid.
6. The balance frame of an engineering survey level gauge according to claim 5, wherein said liquid tube is made of a transparent material, and a light absorbing solvent is dissolved in the filling liquid.
7. The level balance frame for engineering surveying and investigation of claim 6, wherein the infrared measurement assembly comprises two sets of side plates fixedly connected to both sides of the liquid pipe, a plurality of sets of infrared emitters uniformly distributed are fixedly connected to one set of side plates, a plurality of sets of infrared sensors corresponding to the infrared emitters are fixedly connected to the other set of side plates, an analysis controller is arranged on one side of each side plate, the infrared sensors on a signal receiving end of the analysis controller are connected, and a signal output end of the analysis controller is connected with a corresponding set of motors and controls starting and stopping of the set of motors.
8. The leveling instrument balance frame for the engineering survey of claim 2, wherein a leveling instrument is connected to a side of the mounting plate away from the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191648.8A CN113804156A (en) | 2021-10-13 | 2021-10-13 | Surveyor's level balancing stand is used in engineering survey |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191648.8A CN113804156A (en) | 2021-10-13 | 2021-10-13 | Surveyor's level balancing stand is used in engineering survey |
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| Publication Number | Publication Date |
|---|---|
| CN113804156A true CN113804156A (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111191648.8A Pending CN113804156A (en) | 2021-10-13 | 2021-10-13 | Surveyor's level balancing stand is used in engineering survey |
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| Country | Link |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006004049U1 (en) * | 2006-03-15 | 2006-06-08 | Precaster Enterprises Co., Ltd. | Adjustable tripod for laser leveling device has body, seat, measuring device and azimuth micro-adjustment which is fitted at height of micro-adjustment to rotatably hold seat of laser leveling device |
| CN106441541A (en) * | 2016-09-29 | 2017-02-22 | 北京师范大学 | Electronic balance base |
| CN207907856U (en) * | 2018-02-05 | 2018-09-25 | 河南华泰规划勘测设计咨询有限公司 | A kind of engineering survey spirit level of automatic adjustment level |
| CN208107557U (en) * | 2018-01-09 | 2018-11-16 | 柳州铁道职业技术学院 | A kind of railroad engineering survey level foot prop |
| CN208443382U (en) * | 2018-07-19 | 2019-01-29 | 杭州华耕土地规划设计咨询有限公司 | A kind of level |
| CN208567883U (en) * | 2018-07-18 | 2019-03-01 | 云南通衢工程检测有限公司 | Bridge rubber bearing deformation angle electronic, horological angle square |
| CN211527399U (en) * | 2019-10-17 | 2020-09-18 | 广东省地质建设工程勘察院 | Level gauge capable of automatically adjusting levelness |
| CN212456039U (en) * | 2020-06-10 | 2021-02-02 | 广东正方圆工程咨询有限公司 | Water transport engineering surveyor's level for measurement |
| CN212963309U (en) * | 2020-05-29 | 2021-04-13 | 中水投(广东)建设有限公司 | Measuring device is used in hydraulic engineering construction |
| CN214066065U (en) * | 2021-01-27 | 2021-08-27 | 宁波广安达建筑工程有限公司 | Laser level meter |
-
2021
- 2021-10-13 CN CN202111191648.8A patent/CN113804156A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006004049U1 (en) * | 2006-03-15 | 2006-06-08 | Precaster Enterprises Co., Ltd. | Adjustable tripod for laser leveling device has body, seat, measuring device and azimuth micro-adjustment which is fitted at height of micro-adjustment to rotatably hold seat of laser leveling device |
| CN106441541A (en) * | 2016-09-29 | 2017-02-22 | 北京师范大学 | Electronic balance base |
| CN208107557U (en) * | 2018-01-09 | 2018-11-16 | 柳州铁道职业技术学院 | A kind of railroad engineering survey level foot prop |
| CN207907856U (en) * | 2018-02-05 | 2018-09-25 | 河南华泰规划勘测设计咨询有限公司 | A kind of engineering survey spirit level of automatic adjustment level |
| CN208567883U (en) * | 2018-07-18 | 2019-03-01 | 云南通衢工程检测有限公司 | Bridge rubber bearing deformation angle electronic, horological angle square |
| CN208443382U (en) * | 2018-07-19 | 2019-01-29 | 杭州华耕土地规划设计咨询有限公司 | A kind of level |
| CN211527399U (en) * | 2019-10-17 | 2020-09-18 | 广东省地质建设工程勘察院 | Level gauge capable of automatically adjusting levelness |
| CN212963309U (en) * | 2020-05-29 | 2021-04-13 | 中水投(广东)建设有限公司 | Measuring device is used in hydraulic engineering construction |
| CN212456039U (en) * | 2020-06-10 | 2021-02-02 | 广东正方圆工程咨询有限公司 | Water transport engineering surveyor's level for measurement |
| CN214066065U (en) * | 2021-01-27 | 2021-08-27 | 宁波广安达建筑工程有限公司 | Laser level meter |
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Application publication date: 20211217 |