CN114526714A - Measuring tool and measuring method for iron tower foundation construction - Google Patents
Measuring tool and measuring method for iron tower foundation construction Download PDFInfo
- Publication number
- CN114526714A CN114526714A CN202111548152.1A CN202111548152A CN114526714A CN 114526714 A CN114526714 A CN 114526714A CN 202111548152 A CN202111548152 A CN 202111548152A CN 114526714 A CN114526714 A CN 114526714A
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- iron tower
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- level
- lengthening
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004575 stone Substances 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241000668842 Lepidosaphes gloverii Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/10—Plumb lines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/12—Instruments for setting out fixed angles, e.g. right angles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
Abstract
A multifunctional line iron tower foundation construction measuring tool comprises a horizontally rotatable base body, wherein the horizontally rotatable base body is fixed on an adjustable base, and the height of the adjustable base is determined according to the height of a convex stone in a field measuring range; connecting studs are arranged at the 0, 90, 180 and 270 scale positions of the horizontally rotatable base body respectively, each connecting stud is connected with a lengthening scale, the other end of the lengthening scale is connected with a horizontally lengthening scale, and after the horizontally lengthening scale is rotated by a certain angle, a line pendant is tied on the corresponding horizontally lengthening scale. The beneficial effects of the invention are as follows: 1. the number of the extension scales is determined according to the actual situation of the site, the positioning point of the foundation pit is found through the line pendant, and the method is direct and simple. 2. After the positioning point is found, the distance from the pit bottom to the lengthening scale can be directly measured, and the pit digging depth can be simply calculated. 3. Whether the axis of the iron tower is consistent with the angle of the inlet and outlet line can be calculated through the compass and the scale of the outer disc with the horizontal rotatable base.
Description
Technical Field
The invention relates to a multifunctional iron tower foundation measuring tool, in particular to a measuring tool for measuring data of a root opening of an iron tower foundation, an elevation at the bottom of the foundation and above the foundation, whether the center of a foundation pit accords with a line direction or not and the like quickly by a general constructor in different horizontal planes of four foundation pits in plains, mountainous areas or hilly areas without complex calculation, and carrying out data monitoring in construction.
Background
At present, the pit dividing and construction measurement of a line iron tower foundation is generally that technical personnel carry out positioning and calculation through theodolite, level, total station and GPS measurement, and a measuring tape is used for measuring a specific pit dividing positioning point and calculating the pit digging depth on site. However, when the straight line is measured in the construction of the iron tower foundation in the mountainous area, the measurement is influenced by the whole mountain rocks, and the cleaning is troublesome, so that the ground is difficult to measure the straight line data; if a distance measuring instrument, a total station and a GPS are used, the verticality of the measuring rod is not well controlled due to the fact that the difference of the tower foundation in the mountainous area is large, and the error of the numerical value measured by slight inclination is large. Meanwhile, when the angle is measured and converted, complex calculation is required, the price of equipment and instruments is high, and the operation procedure is complicated.
The method for arranging the positioning piles at the bottom of the foundation pit generally comprises the steps of arranging auxiliary positioning piles at the periphery of the foundation pit, arranging the positioning piles at the bottom of the foundation pit by taking the auxiliary positioning piles as a reference in the foundation pit excavation process, and causing the condition of reworking due to the fact that data measurement errors of workers are easy to occur during construction and actual data are inconsistent with drawing data. Meanwhile, when related personnel supervise and accept, complex calculation is required when the foundation pit is at different levels, so that the supervision and acceptance process is complex and slow.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the line iron tower foundation pit division and construction measuring tool is provided under the complex conditions that no GPS signal exists in plain, mountainous area, hilly area and remote area, four foundation pits are on different horizontal planes, and the influence of the raised rocks on the ground on the measurement is caused, and the measuring method using the measuring tool is provided.
The technical scheme of the invention is as follows:
a multifunctional line iron tower foundation construction measuring tool comprises a horizontally rotatable base body, wherein the horizontally rotatable base body is fixed on an adjustable base, and the height of the adjustable base is determined according to the height of a convex stone in a field measuring range; connecting studs are arranged at the 0, 90, 180 and 270 scale positions of the horizontally rotatable base body respectively, each connecting stud is connected with a lengthening scale, the other end of the lengthening scale is connected with a horizontally lengthening scale, and after the horizontally lengthening scale is rotated by a certain angle, a line pendant is tied on the corresponding horizontally lengthening scale.
Foretell rotatable pedestal in area level includes the base inner disc and sets up the rotatable base outer disc of level on the base inner disc, and wherein, the rotatable base outer disc of level rotates on the base inner disc, and the rotatable base outer disc of level is ring form spirit level, has horizontal bubble in the ring form spirit level, and sets up the angle scale mark on the ring, and connecting stud is arranged respectively to 0, 90, 180, 270 scale position of the rotatable base outer disc of level.
The outer disc of the horizontal rotatable base is connected with an angle locking screw.
A compass is fixed on the inner disk of the base.
The lower part of the tail end of each horizontal extension scale is connected with a supporting rod, and the supporting rods are telescopic rods.
A multifunctional line iron tower foundation construction measuring method comprises the following steps:
step 3, fixing the extension scale angles of the four corners at 0 degree, 90 degree, 180 degree and 270 degree positions, wherein the 0 degree position is an iron tower inlet central line, and the locking belt can horizontally rotate the angle of the base body;
step 4, directly reading distance scale hanging line weights at four corners according to the size of a drawing, respectively obtaining 4 contact points of the line weights and the ground, namely A, B, C, D4 auxiliary positioning pile points, and respectively driving auxiliary positioning piles;
step 6, directly lengthening scale reading distance scale hanging line pendants at four corners according to the size of a drawing, respectively obtaining 4 contact points of the line pendants with the ground, namely E, F, G, H four points, wherein the four points are the center points of the foundation pit, and driving positioning piles;
9, monitoring the excavation verticality of the foundation pit through the wire hanging pendant in the step 6 in the foundation pit excavation process; after the foundation pit is excavated, the center of the bottom of the foundation pit is found through the line weight, and the positioning pile is driven to perform foundation construction.
The invention has the beneficial effects that:
1. the number of the extension scales is determined according to the actual situation of the site, the positioning point of the foundation pit is found through the line pendant, and the method is direct and simple.
2. After the positioning point is found, the distance from the pit bottom to the lengthening scale can be directly measured, and the pit digging depth can be simply calculated.
3. Whether the axis of the iron tower is consistent with the angle of the inlet and outlet line can be calculated through the compass and the scale of the outer disc with the horizontal rotatable base.
4. The method is suitable for data measurement during construction and acceptance of iron tower foundations in plains, mountainous areas, hills, remote areas without GPS signals and most lines with specification grades.
5. The invention has simple structure, convenient operation, intuitive and simple measured data, no need of complex calculation and low cost.
Drawings
FIG. 1 is a front view of the multifunctional line iron tower foundation construction measuring tool of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged view of area 0 of FIG. 1;
FIG. 4 is a schematic diagram of a spud determination process;
fig. 5 is a schematic diagram of a process for determining the center point of the foundation pit.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the multifunctional line iron tower foundation construction measuring tool comprises a horizontal rotatable base body 1, and is composed of a horizontal rotatable base outer disc 9, a base inner disc 10, a compass 8 and a connecting stud 11. Wherein, take the rotatable pedestal 1 of level to fix on adjustable base 4 through base set screw 12, adjustable base 4 constitutes the tripod by three flexible leg, reaches 0 and 90 degrees horizontal bubble on the rotatable pedestal 1 of area level through adjusting the flexible leg of adjustable base 4 and is in central point and puts, and adjustable base 4 flexible leg height is decided according to the convex stone height in the on-the-spot measuring range.
Foretell rotatable pedestal 1 of taking level includes base inner disc 10 and sets up rotatable base outer disc 9 of level and compass 8 on the base inner disc, wherein, compass 8 is fixed on base inner disc 10, rotatable base outer disc 9 of level can rotate on base inner disc 10, rotatable base outer disc 9 of level is the ring form spirit level, there is horizontal bubble 14 in the ring form spirit level, and set up the angle scale mark on the ring, angle of rotation can be read out through the angle scale mark on the rotatable base outer disc 9 of level. Connecting studs 11 are respectively arranged at the scale positions of 0, 90, 180 and 270 of the horizontal rotatable base outer disc 9, and the horizontal rotatable base outer disc 9 is locked by angle locking screws 13 after the angle is adjusted.
Every connecting stud 11 all connects and connects long scale 2, connects the other end connecting band level of long scale 2 and connects long scale 3, connects long scale 2 and takes 3 screw threads of level to connect long scale to screw up the zero clearance, and every takes the terminal below connecting support rod 6 of level to connect long scale 3, and bracing piece 6 is the telescopic link. It should be noted that distance scale marks are marked on the extension scale 2 and the horizontal extension scale 3; the horizontal extension scale 3 is provided with a level gauge, and the horizontal bubble with the horizontal extension scale 3 is positioned at the center position by adjusting the length of the support rod 6. The number of the extension scaleplates 2 is determined by the drawing size, four extension scaleplates are normally used, if the mountain blocks, only one extension scaleplate can be used, and the measurement is carried out by rotating 0, 90, 180 and 270 degrees respectively.
According to the drawing size, after the horizontally-connected long scaleplate 3 is rotated by a certain angle, the corresponding horizontally-connected long scaleplate 3 is provided with the plumb bob 5, and the position of the positioning pile is found.
The measuring method comprises the following steps:
And 3, firstly, fixing the angles of the extension scales 2 at the four corners at 0 degree, 90 degree, 180 degree and 270 degree positions, setting the 0 degree position as the center line of the iron tower, and locking the iron tower by using angle locking screws 13 after the angles are adjusted.
And 4, directly lengthening the scale reading distance scale hanging line weight 5 at four corners according to the drawing size, respectively obtaining 4 contact points of the line weight and the ground, namely A, B, C, D4 auxiliary positioning pile points as shown in fig. 1 and 4, and respectively driving the auxiliary positioning piles.
And step 5, loosening the angle locking screws 13, and simultaneously rotating 4 long scaleplates 2 and the horizontally rotatable seat body 1 by 45 degrees through angle scale marks by 4 persons. If 2 people also can all demolish extension scale 2 when operating, pass through angle scale mark rotatory 45 degrees with horizontal rotatable pedestal 1, repeat step 2. The angle of the extension scale 2 is set at 45 degrees, 135 degrees, 225 degrees and 315 degrees, the 0 degree position is the center line of the iron tower, and the angle locking screw 13 is locked, as shown in figure 4.
And 6, directly reading distance scales (distance between the central pile and the center of the foundation pit) on the four-corner extension scale 2 according to the size of the drawing, and respectively obtaining E, F, G, H four points which are 4 contact points of the line weight 5 and the ground as shown in fig. 5, wherein the four points are the center points of the foundation pit, and driving a positioning pile.
And 7, drawing four sides of each foundation pit according to a drawing.
And 8, measuring the distance from the ground of each foundation pit to the extension scale 2 and the distance from the ground of the central pile to the extension scale 2, and calculating the excavation depth of each foundation pit through a drawing.
And 9, the foundation pit excavation process can be realized through the wire hanging pendant in the step 6, the foundation pit excavation verticality is monitored, and the construction quality is guaranteed. After the foundation pit is excavated, the center of the bottom of the foundation pit is found through the line weight 5, and a positioning pile is driven to perform foundation construction.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a multifunctional line iron tower foundation construction measuring tool which characterized in that: the device comprises a horizontally rotatable seat body (1), wherein the horizontally rotatable seat body (1) is fixed on an adjustable base (4), and the height of the adjustable base (4) is determined according to the height of a convex stone in a field measurement range; take 0, 90, 180, 270 scale positions of the rotatable pedestal of level (1) to arrange connecting stud (11) respectively, every connecting stud (11) all connects extension scale (2), and the other end connecting band level of extension scale (2) connects extension scale (3), will take the level to connect extension scale (3) rotatory good angle after, it weighs down (5) to be tied with the line on corresponding area level connects extension scale (3) scale.
2. The multifunctional line iron tower foundation construction measuring tool of claim 1, characterized in that: take rotatable pedestal of level (1) including base inner disc (10) and the rotatable base outer disc of level (9) of setting on the base inner disc, wherein, rotatable base outer disc of level (9) rotate on base inner disc (10), rotatable base outer disc of level (9) are ring form spirit level, have horizontal bubble (14) in the ring form spirit level, and set up the angle scale mark on the ring, connecting stud (11) are arranged respectively to 0 of rotatable base outer disc of level (9), 90, 180, 270 scale positions.
3. The multifunctional line iron tower foundation construction measuring tool of claim 2, characterized in that: an angle locking screw (13) is connected on the outer disk (9) of the horizontal rotatable base.
4. The multifunctional line iron tower foundation construction measuring tool of claim 2, characterized in that: a compass (8) is also fixed on the base inner disc (10).
5. The multifunctional line iron tower foundation construction measuring tool of claim 1, characterized in that: each support rod (6) is connected below the tail end of each horizontal extension scale (3), and each support rod (6) is a telescopic rod.
6. A multifunctional line iron tower foundation construction measuring method using the measuring tool of claim 1, characterized in that: the method comprises the following steps:
step 1, adjusting telescopic legs of an adjustable base (4) to enable horizontal bubbles at 0 and 90 degrees on a horizontally rotatable base body (1) to be in a central position; the height of the telescopic legs of the adjustable base (4) is determined according to the height of the convex stone in the field measurement range, so that the center hole of the base body (1) with the horizontal rotation is aligned with the center pile at the bottom;
step 2, adjusting the length of the support rod (6) to enable the horizontal bubble with the horizontal extension scale (3) to be in the center position; the number of the lengthening scaleplates (2) is determined according to the drawing size;
step 3, fixing the angles of the extension scales (2) at four corners at 0, 90, 180 and 270 degrees, wherein the 0 degree position is the center line of the iron tower, and the locking belt can horizontally rotate the angle of the base body (1);
step 4, directly reading distance scale hanging line weights (5) at four corners according to the size of a drawing, respectively obtaining 4 contact points of the line weights and the ground, namely A, B, C, D4 auxiliary positioning pile points, and respectively driving auxiliary positioning piles;
step 5, loosening the angle of the horizontal rotatable seat body (1), and simultaneously rotating 4 long scaleplates (2) and the horizontal rotatable seat body (1) by 45 degrees through angle scale marks by 4 persons; if 2 persons operate, the lengthening ruler (2) can be completely detached, the base body (1) with the horizontal rotatable function is rotated by 45 degrees through the angle scale mark, and the step 2 is repeated; the angle of the lengthening scale (2) is set at 45 degrees, 135 degrees, 225 degrees and 315 degrees, and the 0 degree position is the center line of the iron tower;
step 6, directly reading distance scale hanging line weights (5) at four corners of the lengthened scale (2) according to the size of a drawing, respectively obtaining four points E, F, G, H, namely 4 contact points of the line weights (5) and the ground, wherein the four points are the center points of the foundation pit, and driving positioning piles;
step 7, drawing four sides of each foundation pit according to a drawing;
step 8, measuring the distance from the ground of each foundation pit to the lengthening scale (2) and the distance from the ground of the central pile to the lengthening scale (2), and calculating the depth of each foundation pit to be dug through a drawing;
9, monitoring the excavation verticality of the foundation pit through the wire hanging pendant in the step 6 in the foundation pit excavation process; after the foundation pit is excavated, the center of the bottom of the foundation pit is found through the line sinker (5), and a positioning pile is driven to perform foundation construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548152.1A CN114526714A (en) | 2021-12-17 | 2021-12-17 | Measuring tool and measuring method for iron tower foundation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548152.1A CN114526714A (en) | 2021-12-17 | 2021-12-17 | Measuring tool and measuring method for iron tower foundation construction |
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| Publication Number | Publication Date |
|---|---|
| CN114526714A true CN114526714A (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111548152.1A Pending CN114526714A (en) | 2021-12-17 | 2021-12-17 | Measuring tool and measuring method for iron tower foundation construction |
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Citations (8)
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|---|---|---|---|---|
| US5007174A (en) * | 1990-01-22 | 1991-04-16 | Cook Robert J | Topographic measuring device |
| US6032376A (en) * | 1998-02-23 | 2000-03-07 | Shurtleff; William K. | Pendulum line level |
| CN102022993A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for separated pits of single pole tower foundation of circuits |
| US20120192442A1 (en) * | 2011-01-31 | 2012-08-02 | Sinovel Wind Group Co., Ltd. | Universal precise leveling measuring device and measurement method thereof |
| CN105423865A (en) * | 2015-12-01 | 2016-03-23 | 本钢板材股份有限公司 | Measurement appliance for installation precision of trolley conductor of bridge crane |
| CN212133664U (en) * | 2020-06-29 | 2020-12-11 | 苏天宝 | Transmission line straight line column foot divides hole appearance fast |
| CN212179912U (en) * | 2020-07-03 | 2020-12-18 | 于文龙 | Pole tower foundation pit dividing construction device |
| CN212721216U (en) * | 2020-09-14 | 2021-03-16 | 石建林 | Trench excavation size detector |
-
2021
- 2021-12-17 CN CN202111548152.1A patent/CN114526714A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5007174A (en) * | 1990-01-22 | 1991-04-16 | Cook Robert J | Topographic measuring device |
| US6032376A (en) * | 1998-02-23 | 2000-03-07 | Shurtleff; William K. | Pendulum line level |
| CN102022993A (en) * | 2010-11-02 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for separated pits of single pole tower foundation of circuits |
| US20120192442A1 (en) * | 2011-01-31 | 2012-08-02 | Sinovel Wind Group Co., Ltd. | Universal precise leveling measuring device and measurement method thereof |
| CN105423865A (en) * | 2015-12-01 | 2016-03-23 | 本钢板材股份有限公司 | Measurement appliance for installation precision of trolley conductor of bridge crane |
| CN212133664U (en) * | 2020-06-29 | 2020-12-11 | 苏天宝 | Transmission line straight line column foot divides hole appearance fast |
| CN212179912U (en) * | 2020-07-03 | 2020-12-18 | 于文龙 | Pole tower foundation pit dividing construction device |
| CN212721216U (en) * | 2020-09-14 | 2021-03-16 | 石建林 | Trench excavation size detector |
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