CN114166173A - Earthwork is backfilled and is used high measuring device of soil level - Google Patents
Earthwork is backfilled and is used high measuring device of soil level Download PDFInfo
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- CN114166173A CN114166173A CN202111437584.5A CN202111437584A CN114166173A CN 114166173 A CN114166173 A CN 114166173A CN 202111437584 A CN202111437584 A CN 202111437584A CN 114166173 A CN114166173 A CN 114166173A
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- 239000002689 soil Substances 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to an earthwork is backfilled the construction field, discloses an earthwork is backfilled and is used soil level height measuring device, and it includes supporting component, the installation frame of setting on supporting component and a plurality of caliber of setting on the installation frame, and the installation frame includes the frame body and sets up a plurality of connecting rods on the frame body, and a plurality of connecting rods are along horizontal direction parallel arrangement, and the caliber slides and sets up on the connecting rod, and the caliber slides along connecting rod length direction. This application has the effect of conveniently measuring backfill earthwork face height.
Description
Technical Field
The application relates to the field of earthwork backfilling construction, in particular to a soil surface height measuring device for earthwork backfilling.
Background
The earthwork backfill is the fill of the building engineering, and mainly comprises foundation fill, foundation pit (groove) or pipe ditch backfill, indoor terrace backfill, outdoor site backfill leveling and the like.
In the earth and stone backfilling engineering, the earth is generally filled in a layered backfilling mode, the height (namely the flatness) of the earth surface needs to be measured for each backfilled layer, the height of the earth surface of the filled layer needs to be controlled within a specified range, and then the next layer of filling can be carried out.
In the process of implementing the application, the inventor finds that at least the following problems exist in the technology: at present, several points are randomly selected on the soil surface for measuring the soil surface height, and the level meter is used for measuring at each selected point, so that the method is troublesome in measuring data, and the measuring efficiency is low.
Disclosure of Invention
For the convenient soil level height who backfills earthwork of measuring, this application provides a earthwork is backfilled and is used soil level height measuring device.
The application provides a earthwork is backfilled with high measuring device of soil level adopts following technical scheme:
the utility model provides an earthwork is backfilled and is used soil level height measuring device, includes supporting component, sets up installation frame on supporting component and sets up a plurality of caliber on the installation frame, the installation frame includes the frame body and sets up a plurality of connecting rods on the frame body, and is a plurality of the connecting rod is along horizontal direction parallel arrangement, the caliber slides and sets up on the connecting rod, the caliber is followed connecting rod length direction slides.
Through adopting above-mentioned technical scheme, set up the installation frame in the backfill region, utilize supporting component to support the installation frame, and adjust the installation frame to the horizontality, then set up the connecting rod on the frame body, again according to the position of measuring point with the caliber adjust taking one's place, utilize the caliber to measure the measuring point location, measure the distance between each measuring point and the connecting rod, calculate at last and obtain the soil surface height, once only measure all measuring points, the measurement of measurement efficiency has been promoted, the multiple spot synchronous measurement also helps promoting measurement accuracy simultaneously.
Optionally, the number of the supporting assemblies is at least three, each supporting assembly comprises a base arranged on the ground, a positioning sleeve vertically arranged on the base and a supporting rod arranged inside the positioning sleeve in a sliding manner, and the supporting rods slide in the vertical direction.
Through adopting above-mentioned technical scheme, utilize the setting of sliding to support the installation frame at the inside bracing piece of position sleeve, the height of the high of accessible bracing piece and position sleeve's sliding fit regulation strong point makes the installation frame also can keep the horizontality on the subaerial of unevenness, promotes measuring convenience and precision.
Optionally, a rack is arranged on the supporting rod along the vertical direction, a communicating groove is formed in the side wall of the positioning sleeve, a gear is arranged in the communicating groove in a rotating mode, the gear is meshed with the rack, a driving device is fixedly arranged on the positioning sleeve, the gear rotates a motor, a positioning bolt is connected to the positioning sleeve through threads, and the positioning bolt penetrates through the positioning sleeve and is abutted against the supporting rod.
By adopting the technical scheme, when the height of the supporting rod needs to be adjusted, the positioning bolt is unscrewed, the rack slides up and down by rotating the gear, so that the height of the supporting rod is adjusted, and the adjusting process can be completed after the positioning bolt is screwed down.
Optionally, the frame body includes a plurality of end to end's frame pole to form closed square, two the one end that the frame pole is close to each other is provided with adapter sleeve, frame rod end with adapter sleeve cooperation of pegging graft, the last connecting bolt that is provided with of adapter sleeve, connecting bolt passes adapter sleeve with frame pole threaded connection is close to the bracing piece top adapter sleeve is L shape setting, and with bracing piece fixed connection.
Through adopting above-mentioned technical scheme, utilize the frame pole to connect into the frame body, make the size of frame body adjust to the measurement occasion of adaptation different areas, the structure of adopting simultaneously to assemble can conveniently be to the transportation of frame body and deposit, further makes things convenient for the measurement work.
Optionally, the frame body inner circle is provided with a plurality of bearing seats, the opening of bearing seat up, the both ends overlap joint of connecting rod is in inside the bearing seat, be provided with the flexure strip on the lateral wall of bearing seat, set up the arc wall on the connecting rod lateral wall, the arc wall with the flexure strip is contradicted.
Through adopting above-mentioned technical scheme, utilize the bearing seat to carry out the bearing to the both ends of connecting rod, can make things convenient for the installation and the dismantlement of connecting rod, set up the flexure strip simultaneously on the lateral wall of bearing seat, utilize the flexure strip connecting rod of contradicting, carry on spacingly to the connecting rod, reduce the possibility that the connecting rod breaks away from the bearing seat, make connecting rod work more stable.
Optionally, the connecting rod includes a plurality of splicing rods connected end to end, a connecting stud is arranged between two adjacent splicing rods, and one end of each of the two splicing rods close to each other is in threaded connection with the connecting stud.
Through adopting above-mentioned technical scheme, utilize a plurality of end to end's concatenation pole to connect into the connecting rod, make the connecting rod assemble into corresponding length according to the user demand, make things convenient for the dismantlement and the installation of connecting rod simultaneously.
Optionally, the sliding sleeve is equipped with the go-between on the connecting rod, the go-between includes ring body and lower ring body, go up the ring body with leave the clearance down between the ring body, go up the ring body with through locking bolted connection between the ring body down, screw up during the locking bolt, the go-between with the connecting rod is closely contradicted, the fixed mounting panel that is provided with in go-between below, the caliber sets up the mounting panel bottom.
By adopting the technical scheme, the upper ring body and the lower ring body are in clearance fit, when the locking bolt is screwed down, the upper ring body and the lower ring body are close to each other and clasp the connecting rod, so that the connecting ring is positioned; when the locking bolt is unscrewed, the gap between the upper ring body and the lower ring body is increased, so that the connecting ring can slide along the length direction of the connecting rod, and the position of the measurer can be conveniently adjusted.
Optionally, the measurer is a displacement sensor, a controller is further disposed on the mounting frame, the motor is electrically connected with the controller, and the measurer is electrically connected with the controller.
By adopting the technical scheme, the controller is utilized to control the motor to work before measurement, the posture of the whole installation frame is adjusted until the installation frame is in a horizontal state, then the displacement sensor is utilized to measure the distance between the backfill surface and the connecting rod, meanwhile, the controller is utilized to receive the measurement data of the displacement sensor, and the data are analyzed and calculated to finally obtain the data.
Optionally, a plurality of levels are arranged on the mounting frame.
Through adopting above-mentioned technical scheme, utilize the spirit level to provide the reference for the altitude mixture control of bracing piece, conveniently adjust the installation frame to the horizontality.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps that an installation frame is arranged in a backfill area, the installation frame is supported by a support assembly and is adjusted to be in a horizontal state, then a connecting rod is arranged on a frame body, a measurer is adjusted to be in place according to the position of a measuring point, the measuring point position is measured by the measurer, the distance between each measuring point and the connecting rod is measured, finally, the soil surface height is obtained through calculation, all measuring points are measured at one time, the measuring efficiency is improved, and meanwhile, multi-point synchronous measurement is also beneficial to improving the measuring precision;
2. the frame rods are connected to form the frame body, so that the size of the frame body can be randomly adjusted to adapt to measuring occasions with different areas, and meanwhile, the assembled structure is adopted, so that the frame body can be conveniently transported and stored, and the measuring work is further facilitated;
3. before measurement, the controller is used for controlling the motor to work, the posture of the whole installation frame is adjusted until the installation frame is in a horizontal state, then the displacement sensor is used for measuring the distance between the backfill surface and the connecting rod, meanwhile, the controller is used for receiving the measurement data of the displacement sensor, analyzing and calculating are carried out, and finally data are obtained.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a schematic view showing a structure of a support member in an embodiment of the present application.
Fig. 3 is a schematic view showing a mounting frame structure in an embodiment of the present application.
Fig. 4 is an enlarged view at a in fig. 3.
Fig. 5 is an exploded view of a connecting rod structure embodying the embodiment of the present application.
Fig. 6 is an enlarged view at B in fig. 3.
Description of reference numerals:
1. a support assembly; 11. a base; 12. a positioning sleeve; 121. a gear; 122. a motor; 123. a communicating groove; 124. positioning the bolt; 13. a support bar; 131. a rack; 2. a mounting frame; 21. a frame body; 211. a frame bar; 212. a connecting sleeve; 213. a connecting bolt; 22. a connecting rod; 221. an arc-shaped slot; 222. splicing rods; 223. connecting a stud; 23. a bearing seat; 231. an elastic sheet; 3. a measurer; 41. a connecting ring; 411. an upper ring body; 412. a lower ring body; 413. locking the bolt; 414. mounting a plate; 51. a controller; 61. a level gauge.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses earthwork is backfilled and is used soil level height measuring device. Referring to fig. 1, an earth surface height measuring device for earth backfilling includes supporting component 1, installation frame 2 and caliber 3, supporting component 1 sets up subaerial, supporting component 1 is provided with four, installation frame 2 level sets up on supporting component 1, caliber 3 evenly distributed has a plurality of on installation frame 2, this embodiment takes five as an example. Utilize supporting component 1 to support installation frame 2, the rethread sets up the distance between 3 measurings ground of the caliber on installation frame 2 and installation frame 2, obtains the soil horizon height after calculating data.
Referring to fig. 2, each supporting assembly 1 includes a base 11, a positioning sleeve 12 and a supporting rod 13, the base 11 is horizontally disposed on the ground, the positioning sleeve 12 is vertically disposed on the base 11, and the bottom end of the positioning sleeve 12 is fixedly connected to the base 11. The locating sleeve 12 is a square sleeve, the supporting rod 13 is a square rod, and the supporting rod 13 is arranged inside the locating sleeve 12 in a sliding mode and can play a limiting role in sliding the supporting rod 13.
Referring to fig. 2, a rack 131 is integrally formed on one side of the support rod 13, a communicating groove 123 is formed in the position, close to the gear 121, of the positioning sleeve 12, the gear 121 is rotatably arranged in the communicating groove 123, the gear 121 is engaged with the rack 131, a motor 122 is arranged on one side of the gear 121, the motor 122 is fixedly connected with the positioning sleeve 12, a driving shaft of the motor 122 is coaxially and fixedly connected with the gear 121, and the motor 122 has a self-locking function.
Referring to fig. 2, the gear 121 is driven to rotate by the motor 122, the rack 131 is driven to slide by the rotation of the gear 121, the support bar 13 is slid up and down, and the support bar 13 is locked when the motor 122 stops rotating. In order to position the height-adjusted support rod 13, a positioning bolt 124 is further threadedly connected to the positioning sleeve 12, the positioning bolt 124 is located near the top of the positioning sleeve 12, and the positioning bolt 124 penetrates through the positioning sleeve 12 and abuts against the support rod 13.
Referring to fig. 3, the mounting frame 2 includes a frame body 21 and a connecting rod 22, the frame body 21 is square, the frame body 21 includes a plurality of frame rods 211 connected end to end, a connecting sleeve 212 is disposed at one end of each of two adjacent frame rods 211 close to each other, the ends of the frame rods 211 are in plug-in fit with the connecting sleeve 212, two connecting bolts 213 are all connected to each connecting sleeve 212 through threads, and a single connecting bolt 213 penetrates through the connecting sleeve 212 to be in threaded connection with the single frame rod 211.
Referring to fig. 2 and 3, the connecting sleeve 212 near the top end of the supporting rod 13 is disposed in an L shape, so that the two frame rods 211 near the top end of the supporting rod 13 are perpendicular to each other, thereby facilitating the formation of the square frame body 21, and the connecting sleeve 212 disposed in an L shape is fixedly connected to the supporting rod 13.
Referring to fig. 3 and 4, a plurality of levels 61 are further disposed on the mounting frame 2, and four levels 61 are used as an example in this embodiment, and the levels 61 are fixedly connected to the frame rods 211 for reference when adjusting the position of the mounting frame 2.
Referring to fig. 3 and 4, a plurality of connecting rods 22 are arranged in parallel along the horizontal direction, and three connecting rods are taken as an example in the present embodiment. A plurality of bearing seats 23 are equidistantly arranged on the inner ring of the frame body 21, the openings of the bearing seats 23 face upwards, the bearing seats 23 are fixedly connected with one side of the frame rod 211, and two ends of the connecting rod 22 are lapped inside the bearing seats 23.
Referring to fig. 3 and 4, in order to reduce the possibility that the connecting rod 22 is separated from the bearing seat 23, the elastic piece 231 is fixedly connected to two vertical inner walls inside the bearing seat 23, the arc-shaped groove 221 is formed in the side wall of the connecting rod 22 close to the elastic piece 231, and the side wall of the arc-shaped groove 221 is abutted to the elastic piece 231, so that the connecting rod 22 is limited.
Referring to fig. 3 and 5, each connecting rod 22 is formed by connecting a plurality of splicing rods 222 end to end, a connecting stud 223 is arranged between two splicing rods 222, one ends of the two splicing rods 222 close to each other are both in threaded connection with the connecting stud 223, and the two splicing rods 222 are abutted against each other.
Referring to fig. 3 and 6, a connection ring 41 is slidably sleeved on the connection rod 22, the connection ring 41 includes an upper ring body 411 and a lower ring body 412, a gap is left between the upper ring body 411 and the lower ring body 412, two locking bolts 413 are threadedly connected to the upper ring body 411, and each locking bolt 413 passes through the upper ring body 411 and is threadedly connected to the lower ring body 412. A mounting plate 414 is fixedly connected below the lower ring body 412, the measuring device 3 is a displacement sensor, the measuring device 3 is fixedly arranged at the bottom of the mounting plate 414, and a measuring rod of the displacement sensor moves along the vertical direction.
Referring to fig. 5 and 6, when the locking bolt 413 is tightened, a gap between the upper ring 411 and the lower ring 412 is reduced, so that the connection ring 41 is tightly abutted against the connection rod 22, thereby achieving the positioning of the connection ring 41. When the locking bolt 413 is unscrewed, the gap between the upper ring body 411 and the lower ring body 412 can be increased, the sliding of the connecting ring 41 is facilitated, the connecting stud 223 is utilized to connect two adjacent splicing rods 222, the two splicing rods 222 can be transited without protrusions, and therefore the connecting ring 41 can slide more conveniently.
Referring to fig. 2, 3 and 4, a controller 51 is further provided on the mounting frame 2, and the controller 51 is connected to the frame bar 211 by bolts. Level meter 61 is electrically connected to controller 51, motor 122 is electrically connected to controller 51, and measuring instrument 3 is electrically connected to controller 51. After the entire height measuring device is installed, whether the current installation frame 2 is in a balanced state is detected by the level meter 61, the height of a certain support rod 13 can be adjusted by the control motor 122, and then the measurement is performed by the measurer 3, and the measurement data is calculated.
The implementation principle of the soil surface height measuring device for earth backfilling in the embodiment of the application is as follows: utilize installation frame 2 and connecting rod 22 that the concatenation formed, can assemble according to the area of measurement on the spot, it is convenient to transport and deposit it simultaneously, after installation frame 2 is installed on the spot, utilize spirit level 61 to detect the state of installation frame 2, and convey data to controller 51, controller 51 controls corresponding motor 122 and carries out work, adjust the height of bracing piece 13, make installation frame 2 be in the horizontality, then adjust the position of caliber 3, utilize controller 51 control caliber 3 simultaneous working, once only record the data of all measuring points, and calculate data, thereby accomplish the measuring process.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides an earthwork is backfilled with soil face height measurement device which characterized in that: including supporting component (1), setting installation frame (2) on supporting component (1) and a plurality of caliber (3) of setting on installation frame (2), installation frame (2) are including frame body (21) and a plurality of connecting rod (22) of setting on frame body (21), and are a plurality of connecting rod (22) are along horizontal direction parallel arrangement, caliber (3) slide to be set up on connecting rod (22), caliber (3) are followed connecting rod (22) length direction slides.
2. The soil surface height measuring device for earth backfilling according to claim 1, wherein: the supporting component (1) is provided with three at least, the supporting component (1) is including setting up base (11), vertical setting locating sleeve (12) on base (11) and the bracing piece (13) that slide setting is inside locating sleeve (12) on subaerial, bracing piece (13) slide along vertical direction.
3. The soil surface height measuring device for earth backfilling according to claim 2, wherein: be provided with rack (131) along vertical direction on bracing piece (13), be provided with intercommunication groove (123) on the lateral wall of position sleeve (12), intercommunication groove (123) internal rotation is provided with gear (121), gear (121) with rack (131) meshing, fixed the setting drive on position sleeve (12) gear (121) pivoted motor (122), threaded connection has positioning bolt (124) on position sleeve (12), positioning bolt (124) pass position sleeve (12) with bracing piece (13) are contradicted.
4. The soil surface height measuring device for earth backfilling according to claim 2, wherein: frame body (21) include a plurality of end to end's frame pole (211) to form closed square, two the one end that frame pole (211) are close to each other is provided with connecting sleeve (212), frame pole (211) tip with connecting sleeve (212) cooperation of pegging graft, be provided with connecting bolt (213) on connecting sleeve (212), connecting bolt (213) pass connecting sleeve (212) with frame pole (211) threaded connection is close to bracing piece (13) top connecting sleeve (212) are the setting of L shape, and with bracing piece (13) fixed connection.
5. The soil surface height measuring device for earth backfilling according to claim 1, wherein: frame body (21) inner circle is provided with a plurality of bearing seat (23), the opening of bearing seat (23) up, the both ends overlap joint of connecting rod (22) inside bearing seat (23), be provided with flexure strip (231) on the lateral wall of bearing seat (23), set up arc wall (221) on connecting rod (22) lateral wall, arc wall (221) with flexure strip (231) are contradicted.
6. The soil surface height measuring device for earth backfilling according to claim 1, wherein: the connecting rod (22) comprises a plurality of end-to-end connecting splicing rods (222), a connecting stud (223) is arranged between every two adjacent splicing rods (222), and one ends, close to each other, of the two splicing rods (222) are in threaded connection with the connecting stud (223).
7. The soil surface height measuring device for earth backfilling according to claim 1, wherein: sliding sleeve is equipped with go up connecting ring (41) on connecting rod (22), go up connecting ring (41) including ring body (411) and lower ring body (412), go up ring body (411) with leave the clearance down between ring body (412), go up ring body (411) with connect through locking bolt (413) down between ring body (412), screw up during locking bolt (413), go up connecting ring (41) with connecting rod (22) closely contradicts, fixed mounting panel (414) that are provided with in connecting ring (41) below, caliber (3) set up mounting panel (414) bottom.
8. The soil surface height measuring device for earth backfilling according to claim 3, wherein: the measurer (3) is a displacement sensor, the mounting frame (2) is further provided with a controller (51), the motor (122) is electrically connected with the controller (51), and the measurer (3) is electrically connected with the controller (51).
9. The soil surface height measuring device for earth backfilling according to claim 1, wherein: the installation frame (2) is provided with a plurality of gradienters (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437584.5A CN114166173A (en) | 2021-11-30 | 2021-11-30 | Earthwork is backfilled and is used high measuring device of soil level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437584.5A CN114166173A (en) | 2021-11-30 | 2021-11-30 | Earthwork is backfilled and is used high measuring device of soil level |
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| Publication Number | Publication Date |
|---|---|
| CN114166173A true CN114166173A (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111437584.5A Pending CN114166173A (en) | 2021-11-30 | 2021-11-30 | Earthwork is backfilled and is used high measuring device of soil level |
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| CN (1) | CN114166173A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715275B1 (en) * | 2006-11-18 | 2007-05-08 | (주) 장맥엔지니어링 | Measure apparatus of back-filling construction |
| CN202466373U (en) * | 2012-02-10 | 2012-10-03 | 南京农业大学 | Plane needle ruler type earth surface unevenness measuring instrument |
| CN109798871A (en) * | 2019-03-21 | 2019-05-24 | 中冶成都勘察研究总院有限公司 | Native face height controls measurement method after a kind of cubic meter of backfill |
| CN210036676U (en) * | 2019-06-28 | 2020-02-07 | 无锡市第五建筑工程有限公司 | Precision tool for controlling flatness of floor with ultra-large area |
| CN214033651U (en) * | 2020-11-19 | 2021-08-24 | 天津铁设科技有限公司 | Water conservancy is supervised with filling up thickness detection device |
-
2021
- 2021-11-30 CN CN202111437584.5A patent/CN114166173A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715275B1 (en) * | 2006-11-18 | 2007-05-08 | (주) 장맥엔지니어링 | Measure apparatus of back-filling construction |
| CN202466373U (en) * | 2012-02-10 | 2012-10-03 | 南京农业大学 | Plane needle ruler type earth surface unevenness measuring instrument |
| CN109798871A (en) * | 2019-03-21 | 2019-05-24 | 中冶成都勘察研究总院有限公司 | Native face height controls measurement method after a kind of cubic meter of backfill |
| CN210036676U (en) * | 2019-06-28 | 2020-02-07 | 无锡市第五建筑工程有限公司 | Precision tool for controlling flatness of floor with ultra-large area |
| CN214033651U (en) * | 2020-11-19 | 2021-08-24 | 天津铁设科技有限公司 | Water conservancy is supervised with filling up thickness detection device |
Non-Patent Citations (1)
| Title |
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| 谭永刚;: "自制工件辅助框式水平仪测量设备的安装水平度", 安装, no. 09, 15 September 2018 (2018-09-15) * |
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