CN114045837A - Foundation pit construction monitoring device and foundation pit monitoring method - Google Patents
Foundation pit construction monitoring device and foundation pit monitoring method Download PDFInfo
- Publication number
- CN114045837A CN114045837A CN202111557742.0A CN202111557742A CN114045837A CN 114045837 A CN114045837 A CN 114045837A CN 202111557742 A CN202111557742 A CN 202111557742A CN 114045837 A CN114045837 A CN 114045837A
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- bed frame
- foundation pit
- base frame
- laser range
- moving platform
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
Abstract
The utility model relates to a foundation ditch construction monitoring devices relates to construction detection device's technical field, including the bed frame, the bed frame sets up subaerial, the bed frame sets up around the round hole, be provided with moving platform on the bed frame, moving platform removes along bed frame extending direction, the last dismantlement of moving platform is connected with detection mechanism, detection mechanism is arranged in vertical round hole of inserting, detection mechanism includes member and laser range finder, the member is arranged in vertical round hole of inserting, laser range finder sets up on the member along member length direction interval, laser range finder's orientation is the same. This application has the effect that can the concave-convex degree of automatic monitoring foundation ditch inner wall.
Description
Technical Field
The application relates to the technical field of construction detection devices, in particular to a foundation pit construction monitoring device and a foundation pit monitoring method.
Background
The foundation pit is used for embedding a large machine and a prefabricated pit body of a large engineering building material, the construction quality of the foundation pit directly influences the connection strength and stability of installation equipment and the building material, and the construction quality needs to be monitored in the construction process. The foundation ditch generally sets up to the round hole, and the round hole needs to dig and make the bottom be the horizontality under vertically to make the equipment or the building materials atress that set up in the round hole even, connect stably.
The related foundation pit construction monitoring method needs to be completed manually, when the foundation pit excavation work is finished, a user coats cement mortar in the foundation pit, and the user detects the concave-convex degree and the inclination degree of the inner wall of the excavated round pit through a high-precision measuring instrument such as a handheld laser range finder, so that the construction quality of the foundation pit is judged.
The above prior art solutions have the following drawbacks: when large-scale equipment is installed, a foundation pit with a large floor area needs to be dug, the number of positions needing to be measured by users is large, and the measurement process consumes manpower and causes inconvenience.
Disclosure of Invention
In order to automatically monitor the concave-convex degree of the inner wall of the foundation pit, the application provides a foundation pit construction monitoring device and a foundation pit monitoring method.
The application provides a foundation ditch construction monitoring devices adopts following technical scheme:
the utility model provides a foundation ditch construction monitoring devices, includes the bed frame, and the bed frame sets up subaerial, and the bed frame sets up around the round hole, is provided with moving platform on the bed frame, and moving platform removes along bed frame extending direction, and moving platform is last to dismantle to be connected with detection mechanism, and detection mechanism is arranged in vertical round hole of inserting, and detection mechanism includes member and laser range finder, and the member is arranged in vertical round hole of inserting, and laser range finder sets up on the member along member length direction interval, and laser range finder's orientation is the same.
Through adopting above-mentioned technical scheme, through setting up the bed frame subaerial, make the bed frame center around outside the round hole, through set up moving platform on the bed frame, make moving platform can rotate around the round hole on the bed frame, through set up detection mechanism on moving platform, make the member can vertically insert in the round hole, when moving platform moved on the bed frame, the member can drive a plurality of laser range finders and remove, laser range finder can shine laser on the round hole inner wall, the numerical value change of user of service through monitoring a plurality of laser range finders, thereby play the effect of the unsmooth degree of monitoring foundation ditch inner wall.
Optionally, the rod piece is provided with an insertion end and a connecting end, the insertion end and the connecting end are respectively arranged at two ends of the rod piece, the insertion end is used for being detachably connected to the connecting end of another rod piece, and the insertion end is used for being detachably connected to the mobile platform.
Through adopting above-mentioned technical scheme, insert end and link through seting up on the member, make a plurality of members can dismantle the connection each other, and the user of service can be according to the quantity of the degree of depth adjustment member of round hole, and then plays the effect that makes detection mechanism can inspect the inner wall of the round hole of the different degree of depth.
Optionally, be provided with joint spare on the member, joint spare sets up on the member inner wall, and joint spare sets up and inserting end one side, and joint spare includes elastic component and plug-in components, and elastic component one end is connected on the member inner wall, and the other end is connected with the plug-in components, and the plug-in components setting is in the member, and the plug-in components run through the member and stretch out, and the elastic component is used for making the plug-in components stretch out outside the member under natural state, has seted up the mating holes on the link, and the plug-in components are arranged in inserting the mating holes.
Through adopting above-mentioned technical scheme, through setting up joint spare on the member, make plug-in components pass through the elastic component and connect on the member inner wall, during user of service can insert the mating holes through making plug-in components to make two member interconnect, user of service can press the plug-in components, make plug-in components income member in, thereby make plug-in components and mating holes break away from the connection, and then play the effect that makes two member break away from the connection.
Optionally, a mounting frame is arranged on the mobile platform, a connecting cylinder is arranged on one end, far away from the mobile platform, of the mounting frame, the connecting cylinder is arranged vertically, and the connecting cylinder is used for being detachably connected with the rod piece.
Through adopting above-mentioned technical scheme, through setting up the mounting bracket on moving platform, set up the connecting cylinder on the mounting bracket to make the member can pass through the connecting cylinder and connect on moving platform, through making the vertical setting of connecting cylinder, make the member can vertically connect on the connecting cylinder, and then make the member can insert in the drum and keep vertical.
Optionally, a groove is formed in the base frame, two positioning shafts are arranged at one end, close to the ground, of the mobile platform, the positioning shafts are perpendicular to the mobile platform, and the positioning shafts are used for being vertically inserted into the groove.
Through adopting above-mentioned technical scheme, through seting up the recess on the bed frame, set up the location axle on moving platform, make the location axle can insert in the recess, when moving platform moved on the bed frame, the location axle can play the guide effect, and then makes moving platform can move along bed frame extending direction on the bed frame.
Optionally, a plurality of leveling mechanisms are arranged on the base frame, the leveling mechanisms are arranged at equal intervals along the extending direction of the base frame, each leveling mechanism comprises an installation seat and a screw rod, the installation seats are connected to the base frame, the screw rods are vertically arranged and penetrate through the installation seats, the screw rods are in threaded connection with the installation seats, and the screw rods are used for being abutted to the ground.
Through adopting above-mentioned technical scheme, through setting up a plurality of leveling mechanism on the bed frame, make leveling mechanism play the effect of supporting the bed frame, through set up the mount pad on the bed frame, set up the screw rod on the mount pad, make screw rod one end butt subaerial, user can make screw rod tip position remove through revolving the screw rod soon, and then play the effect of adjustment bed frame position, user can be through adjusting a plurality of screw rods, and then make the bed frame level to make the member can vertical setting in the round pit.
Optionally, a bubble level gauge is arranged on the mounting seat.
Through adopting above-mentioned technical scheme, through setting up the bubble spirit level on the mount pad, user of service can observe the incline direction of bed frame through the bubble spirit level, and then makes things convenient for user of service to adjust bed frame to horizontality.
The foundation pit monitoring method of the foundation pit construction monitoring device adopts the following technical scheme:
a foundation pit monitoring method of a foundation pit construction monitoring device comprises the following steps:
s1, arranging the base frame on the ground to enable the base frame and the circular pit to be concentric;
s2, checking the position of the base frame to make the base frame horizontal;
s3, arranging the mobile platform on the base frame;
s4, connecting a plurality of detection mechanisms on the mobile platform according to the depth of the round pit;
s5, connecting the end of the wire to the terminal;
s6, controlling the moving platform to move at a constant speed, and enabling the laser range finder to continuously emit laser and record data;
and S7, judging the concave-convex condition of the inner wall of the circular pit by a user according to the data, and repairing.
Through adopting above-mentioned technical scheme, through setting up the bed frame subaerial, make the bed frame level set up subaerial, thereby make moving platform can move on the bed frame and drive the member and keep vertical state to remove, through making electric wire end connection on the terminal, the user can change through the reading of monitoring a plurality of laser range finder on the member, and then judge the unsmooth degree of the round hole inner wall department of member orientation, move through making moving platform drive detection mechanism, thereby make the member can the automatic movement, the effect that has the unsmooth degree of automatic monitoring foundation ditch inner wall.
To sum up, the beneficial technical effect of this application does:
1. the base frame is arranged on the ground, so that the base frame surrounds the round pit, the mobile platform is arranged on the base frame, the mobile platform can rotate on the base frame around the round pit, the detection mechanism is arranged on the mobile platform, the rod piece can be vertically inserted into the round pit, when the mobile platform moves on the base frame, the rod piece can drive the laser range finders to move, the laser range finders can irradiate laser on the inner wall of the round pit, and a user monitors the numerical value change of the laser range finders, so that the effect of monitoring the concave-convex degree of the inner wall of the foundation pit is achieved;
2. the base frame is provided with the plurality of leveling mechanisms, so that the leveling mechanisms have the effect of supporting the base frame, the base frame is provided with the mounting seat, the mounting seat is provided with the screw rod, one end of the screw rod is abutted to the ground, a user can move the end part of the screw rod by screwing the screw rod, the effect of adjusting the position of the base frame is further achieved, and the user can adjust the plurality of screw rods, so that the base frame is horizontal, and a rod piece can be vertically arranged in the round pit;
3. through setting up the bed frame subaerial, make the bed frame level set up subaerial, thereby make moving platform can move on the bed frame and drive the member and keep vertical state to remove, through making electric wire end connection on the terminal, the user of service can change through the reading of a plurality of laser range finder on the control member, and then judge the unsmooth degree of the round hole inner wall department of member orientation, move through making moving platform drive detection mechanism, thereby make the member can the automatic movement, the effect that has the unsmooth degree of automatic monitoring foundation ditch inner wall.
Drawings
Fig. 1 is a schematic view of a mounting structure of an embodiment of the present application.
Fig. 2 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 3 is a schematic view of the overall structure of the detection mechanism according to the embodiment of the present application.
Fig. 4 is a partial cross-sectional view of the plane a-a in fig. 3.
Reference numerals: 1. a base frame; 11. a groove; 2. a mobile platform; 21. a power wheel; 22. positioning the shaft; 23. a mounting frame; 231. a connecting cylinder; 232. a receiving hole; 3. a detection mechanism; 31. a rod member; 311. an insertion end; 312. a connecting end; 313. a mating hole; 32. a laser range finder; 33. an electric wire; 4. a clamping piece; 41. an elastic member; 42. a plug-in; 5. a leveling mechanism; 51. a mounting seat; 52. a screw; 53. a bubble level; 6. and (5) round pits.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses foundation ditch construction monitoring devices. Referring to fig. 1, the base frame 1 is provided with a round pit 6 on the ground, and the base frame 1 is arranged at the edge of the round pit 6. The base frame 1 is of a circular plate structure, and the base frame 1 and the circular pit 6 are arranged concentrically. The diameter of the base frame 1 is larger than that of the round pit 6. A mobile platform 2 is arranged on the base frame 1, and the mobile platform 2 can advance on the base frame 1 along the circumferential direction of the base frame 1. Can dismantle on the moving platform 2 and be connected with detection mechanism 3, detection mechanism 3 is used for stretching into in the round hole 6 and detect the roughness on round hole 6 surface, and constructor construction back, moving platform 2 can drive detection mechanism 3 and detect the 6 lateral walls in round hole, and constructor can repair and rework according to the detected data to promote the construction quality in round hole 6.
Referring to fig. 2, the mobile platform 2 has a rectangular plate structure, a plurality of power wheels 21 are rotatably connected to one side of the mobile platform 2 close to the ground, and the mobile platform 2 moves on the base frame 1 through the power wheels 21. Two positioning shafts 22 are arranged on the lower bottom surface of the moving platform 2, the positioning shafts 22 are arranged at intervals along the advancing direction of the moving platform 2, the positioning shafts 22 are fixed on the moving platform 2 through welding or bonding, and the positioning shafts 22 are perpendicular to the moving platform 2. A groove 11 is formed in the base frame 1, the groove 11 is an annular groove, and the circle center of the circle of the groove 11 is concentric with the base frame 1. Two positioning shafts 22 are inserted into the grooves 11. When the mobile platform 2 advances, the positioning shaft 22 plays a guiding role, so that the mobile platform 2 can circularly move on the base frame 1.
Referring to fig. 2, a mounting frame 23 is disposed on a surface of one side of the mobile platform 2 away from the power wheel 21, and the mounting frame 23 is welded or fixedly connected to the mobile platform 2. The end of the mounting frame 23 far away from the movable platform 2 is connected with a connecting cylinder 231, and the connecting cylinder 231 is fixed on the mounting frame 23 through welding or bonding. The connecting cylinder 231 is vertically arranged on one side of the movable platform 2, and when the movable platform 2 is arranged on the base frame 1, the connecting cylinder 231 is positioned on the movable platform 2, close to one side of the center of the circle of the base frame 1 and above the round pit 6. The connecting cylinder 231 is a hollow cylinder, the detection mechanism 3 can be inserted into the connecting cylinder 231, and the connecting cylinder 231 is detachably connected to the detection mechanism 3.
Referring to fig. 2 and 3, the detection mechanism 3 includes a rod 31 and a plurality of laser range finders 32, the rod 31 is a hollow round rod structure, and the rod 31 can be made of a material with light weight and good structural strength, such as plastic. The laser range finders 32 are sequentially arranged on the outer wall of the rod member 31 at intervals along the length direction of the rod member 31, the laser range finders 32 are fixed on the rod member 31 through bonding, and the plurality of laser range finders 32 on one rod member 31 face the same direction. An electric wire 33 is provided on one laser rangefinder 32, the electric wire 33 is used for connecting to the terminal, and the electric wire 33 is used for supplying power to the laser rangefinder 32 and transmitting electric signals. The user of service can insert many electric wires 33 in terminals such as computer to make things convenient for the user of service to detect the real-time reading of every laser range finder 32, thereby make things convenient for the user of service to observe the lateral wall roughness of the round hole 6 of detection mechanism 3 position.
Referring to fig. 2 and 3, a receiving hole 232 is formed at an end of the mounting bracket 23 adjacent to the connecting tube 231, and the receiving hole 232 is used for passing the electric wire 33. After the user installs the detection mechanism 3 on the connecting cylinder 231, the user can gather the electric wire and pass through the accommodating hole 232, and then connect the end of the electric wire 33 far away from the laser range finder 32 to the terminal. The housing hole 232 has an effect of housing the electric wire 33, and can reduce the possibility that the electric wire 33 is twisted into the power wheel 21 when the mobile platform 2 rotates.
Referring to fig. 3, the rod 31 is provided with an insertion end 311 and a connection end 312, and the insertion end 311 and the connection end 312 are respectively provided at two ends of one rod 31. The insertion end 311 has a diameter smaller than the diameter of the connection end 312. The insertion end 311 can be inserted into the connection end 312 of the other rod 31, the insertion end 311 can be inserted into the connection tube 231, and a user can attach the rod 31 to the rod 31 according to the depth of the circular pit 6, so that the detection mechanism 3 can scan the side walls of the circular pits 6 with different depths.
Referring to fig. 3 and 4, two clamping members 4 are arranged in the insertion end 311, and the clamping members 4 are used for clamping on the connecting end 312. The clamping member 4 comprises an elastic member 41 and a plug-in 42, the elastic member 41 can be a spring plate, one end of the spring plate is welded on the inner wall of the insertion end 311, and the other end of the spring plate is fixed with the plug-in 42 through welding or bonding. The insertion end 311 is provided with a through hole through which the plug 42 can protrude. The elastic member 41 is used to allow the end of the insert 42 remote from the elastic member 41 to protrude from the insertion end 311 in a natural state. The connecting end 312 is provided with two fitting holes 313, and the insert 42 can be inserted into the fitting holes 313 and extend out, so that the two rod members 31 can be detachably connected. After the two rod members 31 are connected with each other, a user can press the plug-in member 42 to enable the plug-in member 42 to be accommodated in the rod members 31, so that the two rod members 31 can be disconnected, and the use is convenient.
Referring to fig. 1 and 2, a plurality of leveling mechanisms 5 are provided on a base frame 1, the number of the leveling mechanisms 5 is at least three, the leveling mechanisms 5 are equidistantly spaced along the circumferential direction of the base frame 1, and the leveling mechanisms 5 are used for adjusting the base frame 1 to a horizontal state. The leveling mechanism 5 comprises a mounting seat 51 and a screw 52, wherein the mounting seat 51 is arranged on one side of the base frame 1 far away from the center of a circle by welding or integral forming. The screw 52 penetrates through the mounting seat 51 and is in threaded connection with the mounting seat 51, and the length direction of the screw 52 is parallel to the axis of the base frame 1. The lower ends of the screws 52 are used for abutting against the ground, the plurality of screws 52 can support the base frame 1 and set on the ground, and a user can adjust the position of the base frame 1 and level the base frame 1 by adjusting the position of the lower ends of the screws 52. Be provided with bubble level 53 on the mount pad 51, bubble level 53 embedding mount pad 51 and bonding or joint are on mount pad 51, and the user can be through bubble level 53 check whether horizontal of bed frame 1.
The implementation principle of the embodiment of the application is as follows: through setting up bed frame 1 subaerial, make moving platform 2 can remove on bed frame 1, through can dismantle on moving platform 2 and connect detection mechanism 3, make member 31 can vertical setting in round hole 6, moving platform 2 removes the in-process, laser range finder 32 is towards 6 inside wall transmission laser in round hole and monitoring member 31 and the interval of 6 inner walls in round hole to make things convenient for the unsmooth degree of user of service monitoring foundation ditch inside wall.
The embodiment of the application also discloses a foundation pit monitoring method of the foundation pit construction monitoring device, which comprises the following steps:
s1, arranging the base frame 1 on the ground to enable the base frame 1 and the circular pit 6 to be concentric;
s2, checking the position of the base frame 1 through the bubble level meter 53, and screwing the screw 52 to level the base frame 1;
s3, arranging the mobile platform 2 on the base frame 1, and inserting the positioning shaft 22 into the groove 11;
s4, connecting a plurality of detection mechanisms 3 on the connecting cylinder 231 according to the depth of the round pit 6;
s5, gathering the electric wire 33 and passing through the containing hole 232, and connecting the end of the electric wire 33 on the terminal;
s6, controlling the moving platform 2 to move at a constant speed, and enabling the laser range finder 32 to continuously emit laser and record data;
and S7, judging the concave-convex condition of the inner wall of the round pit 6 according to the data by a user, and repairing.
The implementation principle of the embodiment of the application is as follows: through setting up bed frame 1 subaerial, set up moving platform 2 on bed frame 1 to make moving platform 2 can revolve around round pit 6, through adjustment levelling mechanism 5, can make bed frame 1 keep the level, and then promote the accuracy when detecting the 6 inner walls of round pit, through connecting detection mechanism 3 on moving platform 2, make moving platform 2 can drive detection mechanism 3 and revolve, thereby make the unsmooth degree that a plurality of laser range finders 32 can monitor the 6 inner walls of round pit.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the 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 (8)
1. The utility model provides a foundation ditch construction monitoring devices which characterized in that: including bed frame (1), bed frame (1) sets up subaerial, bed frame (1) sets up around round hole (6), be provided with moving platform (2) on bed frame (1), moving platform (2) remove along bed frame (1) extending direction, it is connected with detection mechanism (3) to dismantle on moving platform (2), detection mechanism (3) are arranged in vertical round hole (6) of inserting, detection mechanism (3) include member (31) and laser range finder (32), member (31) are arranged in vertical round hole (6) of inserting, laser range finder (32) set up on member (31) along member (31) length direction interval, the orientation of laser range finder (32) is the same.
2. A foundation pit construction monitoring device according to claim 1, characterized in that: an inserting end (311) and a connecting end (312) are arranged on the rod piece (31), the inserting end (311) and the connecting end (312) are respectively arranged at two ends of the rod piece (31), the inserting end (311) is detachably connected into the connecting end (312) of another rod piece (31), and the inserting end (311) is detachably connected onto the movable platform (2).
3. A foundation pit construction monitoring device according to claim 2, characterized in that: be provided with joint spare (4) on member (31), joint spare (4) set up on member (31) inner wall, joint spare (4) set up and insert end (311) one side, joint spare (4) include elastic component (41) and plug-in components (42), elastic component (41) one end is connected on member (31) inner wall, the other end is connected with plug-in components (42), plug-in components (42) set up in member (31), plug-in components (42) run through member (31) and stretch out, elastic component (41) are arranged in making plug-in components (42) stretch out outside member (31) under natural state, mating holes (313) have been seted up on link (312), plug-in components (42) are arranged in inserting mating holes (313).
4. A foundation pit construction monitoring device according to claim 3, characterized in that: the movable platform is characterized in that a mounting frame (23) is arranged on the movable platform (2), a connecting cylinder (231) is arranged on one end, far away from the movable platform (2), of the mounting frame (23), the connecting cylinder (231) is vertically arranged, and the connecting cylinder (231) is detachably connected with the rod piece (31).
5. A foundation pit construction monitoring device according to claim 1, characterized in that: the base frame (1) is provided with a groove (11), one end of the mobile platform (2) close to the ground is provided with two positioning shafts (22), the positioning shafts (22) are perpendicular to the mobile platform (2), and the positioning shafts (22) are vertically inserted into the groove (11).
6. A foundation pit construction monitoring device according to claim 1, characterized in that: be provided with a plurality of levelling mechanism (5) on bed frame (1), levelling mechanism (5) set up along bed frame (1) extending direction equidistance interval, and levelling mechanism (5) include mount pad (51) and screw rod (52), and mount pad (51) are connected on bed frame (1), and mount pad (51) is just run through in the vertical setting of screw rod (52), screw rod (52) and mount pad (51) threaded connection, and screw rod (52) are used for the butt subaerial.
7. A foundation pit construction monitoring device according to claim 6, characterized in that: and the mounting seat (51) is provided with a bubble level gauge (53).
8. A method of monitoring a foundation pit of the apparatus of claim 4, comprising: the method comprises the following steps:
s1, arranging the base frame (1) on the ground to enable the base frame (1) and the circular pit (6) to be concentric;
s2, checking the position of the base frame (1) to enable the base frame (1) to be horizontal;
s3, arranging the mobile platform (2) on the base frame (1);
s4, connecting a plurality of detection mechanisms (3) on the mobile platform (2) according to the depth of the round pit (6);
s5, connecting the end of the electric wire (33) to the terminal;
s6, controlling the moving platform (2) to move at a constant speed, and enabling the laser range finder (32) to continuously emit laser and record data;
and S7, judging the concave-convex condition of the inner wall of the round pit (6) by a user according to the data and repairing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557742.0A CN114045837A (en) | 2021-12-20 | 2021-12-20 | Foundation pit construction monitoring device and foundation pit monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557742.0A CN114045837A (en) | 2021-12-20 | 2021-12-20 | Foundation pit construction monitoring device and foundation pit monitoring method |
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| Publication Number | Publication Date |
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| CN114045837A true CN114045837A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111557742.0A Pending CN114045837A (en) | 2021-12-20 | 2021-12-20 | Foundation pit construction monitoring device and foundation pit monitoring method |
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| CN (1) | CN114045837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115234799A (en) * | 2022-05-05 | 2022-10-25 | 佛山市平石深基坑工程有限公司 | Wisdom building site foundation ditch displacement monitoring devices |
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Application publication date: 20220215 |