A pipeline settlement monitoring device for subway foundation pit construction

Abstract

The present invention relates to the technical field of pipeline settlement monitoring, and discloses a pipeline settlement monitoring device for subway foundation pit construction, which includes a base, wherein the base is provided with a guide rail hoisting assembly and a guide rail flipping assembly, wherein the guide rail hoisting assembly is provided with a guide rail formed by a plurality of joint combinations, wherein the guide rail is parallel to the side wall of the subway foundation pit and extends downward, and a vertical displacement lifting vehicle is provided at the end thereof, and a ground penetrating radar is provided on the side of the lifting vehicle facing the subway foundation pit. Compared with the prior art, the present invention has the following advantages: it does not contact with the pipeline, thereby ensuring that the pipeline is not damaged, the ground penetrating radar can scan multiple pipelines of different depths during vertical movement, the guide rail can be extended by jointing, and can monitor pipelines with a greater burial depth, and a laser target and a laser rangefinder are used to realize accurate perception of elevation, and the vertical position of the laser target is maintained by the liquid level in the static level, which can provide a stable measurement reference surface and ensure the accuracy of settlement monitoring.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline settlement monitoring, and in particular to a pipeline settlement monitoring device for subway foundation pit construction. Background Art

[0002] Pipeline settlement monitoring during subway foundation pit construction is a key link in ensuring the safety of underground pipelines. Its methods mainly involve aspects such as measurement point layout, burial technology, monitoring frequency and instrument use. Monitoring points need to be arranged at important nodes of the pipeline, such as pipeline corners, intersections, valve wells or interfaces. These locations are sensitive to pipeline deformation and can effectively reflect settlement trends.

[0003] For shallowly buried pipelines, measuring nails can be installed directly on the surface, fixed with clamps, and covered with prefabricated cover plates for protection. The elevation of the clamps can be measured using a precision electronic level and an indium steel ruler. For pipelines with greater burial depths, holes can be drilled above the pipelines and round steel bars can be inserted. The bottom of the steel bars should be in contact with the top of the pipe, and the top should be slightly lower than the ground and fixed with mortar to ensure that the measuring point is stable. The elevation of the clamps can then be measured using a precision electronic level and an indium steel ruler.

[0004] During the construction of subway foundation pits, as the construction progresses, the depth of the foundation pit continues to deepen. It is necessary to conduct elevation detection of underground pipelines at different depths according to the construction progress. When using existing measurement methods to monitor multiple pipelines, multiple clamp installations or drilling and implanting steel bars are required, which requires a lot of labor and working hours. In addition, if the method of implanting steel bars to contact the pipeline is adopted, it is easy to damage the pipeline during the drilling process. After the pipeline settles, the steel bars will be subject to friction resistance exerted by the surrounding soil as they follow the pipeline down, resulting in inconsistent settlement between the steel bars and the pipeline. The elevation measurement is not accurate enough and it is difficult to truly reflect the size of the pipeline settlement. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing measurement method is difficult to monitor multiple pipelines of different depths, the embedded steel bar monitoring method is easy to damage the pipeline and is not accurate enough, and a subway foundation pit construction pipeline settlement monitoring device is provided.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is: a subway foundation pit construction pipeline settlement monitoring device, which includes a base, which is arranged at the top edge of the subway foundation pit, and its end is overhead above the subway foundation pit. The base is provided with a guide rail lifting assembly and a guide rail flipping assembly. The guide rail lifting assembly is provided with a guide rail formed by a plurality of joint sections. The guide rail is parallel to the side wall of the subway foundation pit and extends downward. A vertical displacement lifting car is provided at the end of the base. A ground penetrating radar is provided on the side of the lifting car facing the subway foundation pit. Positioning rails are provided on both sides of the guide rail, a vertical rack rail is provided on the outside, and a plurality of mounting protrusions are provided on the top.

[0007] A first connector base is provided on the top of the guide rail, and a plurality of T-shaped hooks which can be lifted and rotated are provided on the first connector base. A second connector base is provided on the bottom of the guide rail, and a plurality of columnar grooves which match the T-shaped hooks are provided inside the second connector base. A Z-shaped slider which can move freely axially is provided inside the columnar groove, and a notch which matches the top contour of the T-shaped hook is provided in the center of the Z-shaped slider. A guide groove which matches the top contour of the T-shaped hook is provided at the bottom of the columnar groove, and the guide groove and the central notch of the Z-shaped slider form an angle of 90° on the horizontal plane. A storage groove which is aligned with the guide groove is provided on the first connector base.

[0008] Furthermore, a support ring is provided at the bottom of the first connector base, and a T-shaped hook is vertically slidably sleeved on the support ring. A spring is provided at the bottom of the support ring to push the T-shaped hook downward. A first electric cylinder is suspended at the bottom of the support ring, and a driving ring is provided at the free end of the first electric cylinder to push the T-shaped hook upward.

[0009] Furthermore, a turntable is arranged for rotation connection at the bottom of the support ring, a plurality of radial grooves are arranged on the edge of the turntable, a swing arm is arranged for vertical sliding movement of the T-shaped hook, the swing arm rotates synchronously with the T-shaped hook, the end of the swing arm is slidingly connected to the radial groove, a hook motor is suspended at the bottom of the support ring, and the output shaft of the hook motor is connected to the power of the turntable.

[0010] Furthermore, an electric push rod is provided on the top of the second connector base, and the free end of the electric push rod drives the Z-shaped slider to rise.

[0011] Furthermore, guide wheels are provided on both sides of the lifting vehicle to press against the positioning rails, a first lifting gear motor is provided on the outside of the lifting vehicle to engage with the rack and move, and brake calipers are provided on both sides of the lifting vehicle to press against the positioning rails for braking.

[0012] Furthermore, an electric scissors fork that moves horizontally is provided on the side of the lifting vehicle, and a ground penetrating radar is installed at the end of the electric scissors fork.

[0013] Furthermore, the guide rail lifting assembly includes a main frame, a horizontal clamping roller, a mounting slider and a second electric cylinder. The horizontal clamping roller is pressed against the surface of the guide rail for positioning and clamping. The mounting slider is horizontally slidably arranged on the top of the main frame. The main frame is provided with a second electric cylinder for driving the mounting slider to move. The mounting slider can slide to the bottom of the mounting protrusion for support. The top of the main frame is provided with a second lifting gear motor that engages with the rack.

[0014] Furthermore, a detachable static level is provided at the bottom of the guide rail lifting assembly, a vertically slidable laser target is provided at the top of the static level, a float is provided inside the static level, a connecting rod is provided on the top of the float, the end of the connecting rod passes through the top of the static level and is fixedly connected to the laser target, and a laser rangefinder pointing to the laser target is fixedly provided on the outside of the lifting vehicle.

[0015] Furthermore, the guide rail flipping assembly includes a guide wheel, a clamping slider and a third electric cylinder. The guide wheel is in contact with the outer side of the guide rail. The third electric cylinder drives the clamping slider to move in the horizontal direction. The clamping slider clamps both sides of the guide rail. After the guide rail flipping assembly drives the guide rail to flip, the clamping slider supports the bottom of the mounting protrusion.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] A vertically moving ground penetrating radar is used to scan the pipeline without making contact with the pipeline to ensure that the pipeline is not damaged.

[0018] During the vertical movement of the ground penetrating radar, it can scan multiple pipelines at different depths and perform tracking and monitoring at the same time.

[0019] The guide rails can be connected and extended, and the depth of the guide rails can be continuously increased as the foundation pit construction progresses, so that pipelines buried at greater depths can be monitored.

[0020] Laser targets and laser rangefinders are used to achieve accurate perception of elevation. The vertical position of the laser target is maintained by the liquid level in the static level, which can provide a stable measurement reference surface and ensure the accuracy of settlement monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the present invention in use.

[0023] Figure 3 It is a structural schematic diagram of the first connector base of the present invention.

[0024] Figure 4 It is a schematic diagram of the internal structure of the first connector base of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the T-shaped hook of the present invention.

[0026] Figure 6 It is a structural schematic diagram of a turntable of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the second connector base of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the cylindrical groove of the present invention.

[0029] Fig. 9 It is a schematic diagram of the T-shaped hook of the present invention after entering the cylindrical groove.

[0030] Fig.10It is a schematic diagram of the T-shaped hook of the present invention after hooking the cylindrical groove.

[0031] Fig.11 It is a schematic diagram of the guide rails of the present invention when they are butted together.

[0032] Fig.12 It is a structural schematic diagram of the lifting vehicle of the present invention.

[0033] Fig.13 It is a structural schematic diagram of the guide rail hoisting assembly of the present invention.

[0034] Fig.14 It is a structural schematic diagram of the mounting sliding block of the present invention.

[0035] Fig.15 It is a structural schematic diagram of the static level of the present invention.

[0036] Fig.16 It is a structural schematic diagram of the guide rail flip assembly of the present invention.

[0037] Fig.17 It is a structural schematic diagram of the transportation state of the present invention.

[0038] As shown in the figure: 1. Base, 2. Guide rail lifting assembly, 3. Guide rail flip assembly, 4. Guide rail, 5. Lifting car, 6. Positioning rail, 7. Mounting bump, 8. First connector base, 9. Plug, 10. Storage groove, 11. Support ring, 12. T-shaped hook, 13. Swing arm, 14. Turntable, 15. Radial slide, 16. First electric cylinder, 17. Drive ring, 18. Hook motor, 19. Second connector base, 20. Socket, 21. Guide groove, 22. Column groove, 23. Z-shaped slider, 24 , electric push rod, 25, first lifting gear motor, 26, laser rangefinder, 27, ground penetrating radar, 28, electric scissors, 29, guide wheel, 30, brake caliper, 31, power module, 32, main frame, 33, horizontal clamping roller, 34, limit roller, 35, static level, 36, second lifting gear motor, 37, second electric cylinder, 38, mounting slider, 39, laser target, 40, float, 41, connecting rod, 42, guide wheel, 43, clamping slider, 44, third electric cylinder, 45, rack. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Fig.12A pipeline settlement monitoring device for subway foundation pit construction includes a base 1, which is arranged at the top edge of the subway foundation pit, and its end is overhead and arranged above the subway foundation pit. The base 1 can be towed and moved by a traction vehicle, or can be directly fixed to the tail of an engineering vehicle as an integral engineering equipment. The base 1 is provided with a guide rail hoisting assembly 2 and a guide rail flipping assembly 3. The guide rail hoisting assembly 2 and the guide rail flipping assembly 3 are both flipped by hydraulic control. When the present invention needs to be transported, it can be flipped to an adjacent location by hydraulic control. Fig.17 The center is lowered in the state shown for easy transportation. The guide rail hoisting assembly 2 is provided with a guide rail 4 formed by a plurality of joint sections. The guide rail 4 is parallel to the side wall of the subway pit and extends downward. A vertical displacement lifting vehicle 5 is provided at the end thereof. A ground penetrating radar 27 is provided on the side of the lifting vehicle 5 facing the subway pit. Positioning rails 6 are provided on both sides of the guide rail 4, a vertical rack rail 45 is provided on the outside, and a plurality of mounting protrusions 7 are provided on the top.

[0041] The present invention intends to use a ground penetrating radar 27 to detect buried pipelines from the side wall of a subway foundation pit. The ground penetrating radar 27 moves vertically close to the side wall of the subway foundation pit to scan the buried pipelines. The height of the ground penetrating radar 27 when the target pipeline is closest to the ground penetrating radar is used as the height of the target pipeline. The buried pipeline is repeatedly scanned and the height data is recorded, and the difference in height data each time is used as the settlement distance of the pipeline.

[0042] In order to realize the above working method, the ground penetrating radar 27 needs to have the ability to vertically displace on the side wall of the subway foundation pit. Since the ground penetrating radar 27 needs to maintain a certain degree of stability when working, it is installed on the vertical guide rail 4. In addition, during the construction of the subway foundation pit, the depth of the foundation pit continues to increase. It is necessary to continuously monitor the deeper buried pipelines as monitoring targets and record their settlement amplitude as the construction progresses. Therefore, the guide rail 4 needs to have the ability to change its length.

[0043] Combined with Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 and attached Figure 8 A first connector base 8 is provided at the top of the guide rail 4, and the first connector base 8 is provided with a plurality of T-shaped hooks 12 that can be lifted and rotated. A second connector base 19 is provided at the bottom of the guide rail 4, and a plurality of columnar grooves 22 that match the T-shaped hooks 12 are provided inside the second connector base 19, and a Z-shaped slider 23 that can move freely axially is provided inside the columnar groove 22, and a notch that matches the top contour of the T-shaped hook 12 is provided in the center of the Z-shaped slider 23, and a guide groove 21 that matches the top contour of the T-shaped hook 12 is provided at the bottom of the columnar groove 22, and the guide groove 21 and the central notch of the Z-shaped slider 23 form an angle of 90° on the horizontal plane, and a storage groove 10 aligned with the guide groove 21 is provided on the first connector base 8.

[0044] Combined with Figure 3 , Attachment Figure 4 and attached Figure 5 A support ring 11 is provided at the bottom of the first connector base 8, and a T-shaped hook 12 is vertically slidably sleeved on the support ring 11. A spring is provided at the bottom of the support ring 11 to extend the T-shaped hook 12 downward. A first electric cylinder 16 is suspended at the bottom of the support ring 11, and a driving ring 17 is provided at the free end of the first electric cylinder 16 to extend the T-shaped hook 12 upward.

[0045] Combined with Figure 3 , Attachment Fig. 9 and attached Fig.10 When the guide rail 4 is not docked, the T-shaped hook 12 is extended and recovered into the storage groove 10 by the spring. When docking is required, the first electric cylinder 16 is extended upward. Since the storage groove 10 is parallel to the guide groove 21, the first electric cylinder 16 can directly enter the cylindrical groove 22 through the guide groove 21 after extending upward. Since the guide groove 21 and the central notch of the Z-shaped slider 23 form a 90° angle on the horizontal plane, at this time, the top of the T-shaped hook 12 is not aligned with the central notch of the Z-shaped slider 23, and the top surface of the T-shaped hook 12 contacts the bottom surface of the Z-shaped slider 23, driving the Z-shaped slider 23 to move upward synchronously.

[0046] Combined with Figure 3 and attached Figure 4 A turntable 14 is rotatably connected to the bottom of the support ring 11, and a plurality of radial grooves 15 are arranged on the edge of the turntable 14. A swing arm 13 is vertically slidably arranged on the T-shaped hook 12. The swing arm 13 rotates synchronously with the T-shaped hook 12, and the end of the swing arm 13 is slidably connected to the radial groove 15. A hook motor 18 is suspended from the bottom of the support ring 11, and the output shaft of the hook motor 18 is connected to the power of the turntable 14.

[0047] When the T-shaped hook 12 moves upward to the limit, the hook motor 18 drives the turntable 14 to rotate, so that the T-shaped hook 12 rotates 90°. At this time, the top of the T-shaped hook 12 is aligned with the central notch of the Z-shaped slider 23, and the T-shaped hook 12 cannot contact the bottom surface of the Z-shaped slider 23. The Z-shaped slider 23 loses the support of the T-shaped hook 12 and slides downward. In this state, the Z-shaped slider 23 locks the side of the T-shaped hook 12, and the T-shaped hook 12 cannot rotate. The T-shaped hook 12 and the guide groove 21 form an angle of 90°. In this state, the first electric cylinder 16 is controlled to move the T-shaped hook 12 downward, so that the bottom surface of the T-shaped hook 12 is tightly pressed against the bottom surface of the cylindrical groove 22, forming a T-shaped hook 12 hooking the second connector base 19 to drive the upper guide rail 4 to tightly dock with the lower guide rail 4 up and down.

[0048] Combined with Figure 8 An electric push rod 24 is provided on the top of the second connector base 19 , and the free end of the electric push rod 24 abuts against the Z-shaped slider 23 .

[0049] When the two guide rails 4 need to be released from docking, it is first necessary to control the electric push rod 24 to push the Z-shaped slider 23 upwards to release the rotation lock on the T-shaped hook 12, and control the first electric cylinder 16 to make the T-shaped hook 12 move up slightly. In this state, the T-shaped hook 12 can rotate and is not tightly against the bottom surface of the cylindrical groove 22. The hook motor 18 is controlled to drive the T-shaped hook 12 to rotate so that it is aligned with the guide groove 21. The first electric cylinder 16 is controlled to make the T-shaped hook 12 return to the inside of the storage groove 10, and the electric push rod 24 is controlled to retract. The Z-shaped slider 23 falls back to the bottom of the cylindrical groove 22. In this state, the docking of the two guide rails 4 is released.

[0050] The present invention achieves the effect of changing the length by connecting multiple sections of guide rails 4 up and down. When it is necessary to add or reduce the guide rails 4, the guide rails 4 to be installed need to be placed on the guide rail flipping assembly 3, and the hydraulic flipping mechanisms corresponding to the guide rail hoisting assembly 2 and the guide rail flipping assembly 3 are controlled so that the two can be attached. Fig.11 The guide rail hoisting assembly 2 is provided with a limit roller 34, which can make the guide rails 4 to be connected to each other initially aligned, and then the two guide rails 4 can be completely connected or unconnected by the above method.

[0051] Since the above-mentioned docking operations all require an electric device as a power source, a power module 31 is installed at the bottom end of the multi-section guide rail 4. The power module 31 is connected to the power supply and control equipment on the ground through a winch cable. The electric components corresponding to the first connector base 8 in the bottom guide rail 4 of the multi-section guide rail 4 are all provided with power and control signals by the power module 31. An electric lifting plug 9 is set in the center of the top of each first connector base 8, and a socket 20 is set in the center of the bottom of each second connector base 19. When the guide rails 4 are docked, the plug 9 of the guide rail 4 below is controlled to electrically rise and connect with the socket 20, so as to provide power and control signals to each electric component in the upper guide rail 4, and in this way, power and control signals are provided to each guide rail 4 step by step from bottom to top.

[0052] Combined with Fig.12 Guide wheels 29 are provided on both sides of the lifting vehicle 5 to press against the positioning rail 6. A first lifting gear motor 25 is provided on the outer side of the lifting vehicle 5 to engage with the rack rail 45. The lifting vehicle 5 is moved on the guide rail 4 by the first lifting gear motor 25. Brake calipers 30 are provided on both sides of the lifting vehicle 5 to press against the positioning rail 6 for braking.

[0053] Combined with Fig.12 The side of the lifting vehicle 5 is provided with an electric scissors 28 that can move horizontally, and the ground penetrating radar 27 is installed at the end of the electric scissors 28. The distance between the ground penetrating radar 27 and the side wall of the subway foundation pit can be adjusted according to the on-site conditions.

[0054] Combined with Fig.13 and attached Fig.14The guide rail lifting assembly 2 includes a main frame 32, a horizontal clamping roller 33, a mounting slider 38 and a second electric cylinder 37. The horizontal clamping roller 33 is pressed against the surface of the guide rail 4 to position and clamp it. The mounting slider 38 is horizontally slidably arranged on the top of the main frame 32. The main frame 32 is provided with a second electric cylinder 37 for driving the mounting slider 38 to move. The mounting slider 38 can slide to the bottom of the mounting protrusion 7 for support. The top of the main frame 32 is provided with a second lifting gear motor 36 that engages with the rack 45.

[0055] The horizontal clamping roller 33 is hydraulically controlled to clamp the guide rail 4 tightly, so that the guide rail 4 remains relatively stable, ensuring accurate detection of the ground penetrating radar 27.

[0056] When the number of guide rails 4 needs to be increased, it is necessary to wait until the guide rails 4 are docked, then move the multiple sections of guide rails 4 downward as a whole, and then fix the guide rails 4. Conversely, when the number of guide rails 4 needs to be reduced, it is necessary to wait until the guide rails 4 are undocking, then move the multiple sections of guide rails 4 upward as a whole, and after moving the guide rails 4, the support guide rails 4 need to be fixed.

[0057] In order to realize the above working mode, the second lifting gear motor 36 can be used to drive the overall displacement of the multi-section guide rail 4, and the guide rail 4 is supported by the mounting slider 38 supporting the mounting protrusion 7 on the top of the guide rail 4. When the multi-section guide rail 4 needs to be moved, the second electric cylinder 37 is first controlled to move the mounting slider 38 from the bottom of the mounting protrusion 7, and then the second lifting gear motor 36 is controlled to drive the multi-section guide rail 4 to move. After the mounting slider 38 is moved away from the bottom of the mounting protrusion 7, the gravity of the multi-section guide rail 4 and the various components mounted thereon are borne by the second lifting gear motor 36. In order to prevent the multi-section guide rail 4 from suddenly falling at this time, the second lifting gear motor 36 needs to have a deceleration mechanism with self-locking capability.

[0058] Combined with Fig.12 , Attachment Fig.14 and attached Fig.15 A detachable static level 35 is provided at the bottom of the guide rail lifting assembly 2, a vertically slidable laser target 39 is provided at the top of the static level 35, a float 40 is provided inside the static level 35, a connecting rod 41 is provided on the top of the float 40, the end of the connecting rod 41 passes through the top of the static level 35 and is fixedly connected to the laser target 39, and a laser rangefinder 26 pointing to the laser target 39 is fixedly provided on the outside of the lifting vehicle 5.

[0059] The height of the lifting vehicle 5 is detected by the laser rangefinder 26, so as to determine the height of the ground penetrating radar 27. Since the laser rangefinder 26 needs to detect the distance between it and the reflective surface by irradiating the reflective surface, a laser target 39 is set at the bottom of the guide rail lifting assembly 2, and the laser rangefinder 26 is installed with the detection head facing upward, and the laser target 39 is aligned with the laser rangefinder 26. The laser rangefinder 26 can detect the distance between it and the laser target 39 as height data.

[0060] If the construction of the subway foundation pit causes settlement of the surrounding soil, in addition to the elevation change of the buried pipeline, the height of the bottom surface will also change accordingly. Since the base 1 of the present invention is set on the surface at the top edge of the subway foundation pit, the laser target 39 can only represent its position on the surface, and the laser rangefinder 26 can only use the height difference between the ground penetrating radar 27 and the laser target 39 as the height data for monitoring the target pipeline. If the surface and the pipeline settle at the same time, the height data monitored in this state cannot represent the actual elevation change, so it is necessary to enable the laser target 39 to maintain a fixed height and not change with the surface settlement.

[0061] In order to realize the above functional requirements of the laser target 39, the laser target 39 is firstly set to be able to float in the vertical direction, and the static level 35 is installed on the guide rail lifting assembly 2. The external water storage container required for the operation of the static level 35 is installed at a location far away from the subway foundation pit construction site. Due to the characteristics of the static level 35, the absolute height of the internal liquid level is only determined by the liquid level height in the external water storage container. By installing the external water storage container in an area where no settlement occurs, the absolute height of the internal liquid level of the static level 35 can be kept unchanged. Then, a float 40 is set on the static level 35 to control the lifting and lowering of the laser target 39 through the connecting rod 41, so that the relative height of the laser target 39 and the internal liquid level of the static level 35 can be kept consistent, so that the laser target 39 maintains a fixed height. Since the height maintenance of the laser target 39 depends on the buoyancy of the float 40, when the above components are implemented, the laser target 39 should be made of a lighter material to avoid the buoyancy provided by the float 40 being less than the gravity of the laser target 39.

[0062] Combined with Fig.16 The guide rail flipping assembly 3 includes a guide wheel 42, a clamping slider 43 and a third electric cylinder 44. The guide wheel 42 is in contact with the outer side of the guide rail 4. The third electric cylinder 44 drives the clamping slider 43 to move in the horizontal direction. The clamping slider 43 clamps the two sides of the guide rail 4. After the guide rail flipping assembly 3 drives the guide rail 4 to flip, the clamping slider 43 supports the bottom of the mounting protrusion 7.

[0063] When increasing the number of guide rails 4, it is necessary to first place the guide rails 4 to be installed on the guide rail flipping assembly 3, and then flip the guide rails 4 to be installed through the hydraulic flipping mechanism of the guide rail flipping assembly 3. The above structure can achieve rough positioning and clamping of the guide rails 4 to be installed.

[0064] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by it, and does not deviate from the purpose of the invention, and does not creatively design a structure and implementation method similar to the technical solution, they should all fall within the protection scope of the present invention.

Claims

1. A pipeline settlement monitoring device for subway foundation pit construction, comprising a base (1), characterized in that: The base (1) is provided with a guide rail hoisting assembly (2) and a guide rail flipping assembly (3); the guide rail hoisting assembly (2) is provided with a guide rail (4) formed by a plurality of butt-jointed sections; the guide rail (4) is parallel to the side wall of the subway foundation pit and extends downward; a vertical displacement lifting vehicle (5) is provided at the end thereof; a ground penetrating radar (27) is provided on the side of the lifting vehicle (5) facing the subway foundation pit; positioning steel rails (6) are provided on both sides of the guide rail (4); a vertical rack rail (45) is provided on the outer side; and a plurality of mounting protrusions (7) are provided on the top; A first connector base (8) is provided at the top of the guide rail (4), and the first connector base (8) is provided with a plurality of T-shaped hooks (12) that can be lifted and rotated. A second connector base (19) is provided at the bottom of the guide rail (4), and a plurality of columnar grooves (22) that match the T-shaped hooks (12) are provided inside the second connector base (19), and an axially movable Z-shaped slider (23) is provided inside the columnar groove (22), and a notch that matches the top profile of the T-shaped hook (12) is provided in the center of the Z-shaped slider (23), and a guide groove (21) that matches the top profile of the T-shaped hook (12) is provided at the bottom of the columnar groove (22), and the guide groove (21) and the central notch of the Z-shaped slider (23) form an angle of 90° on a horizontal plane.

2. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: A support ring (11) is provided at the bottom of the first connector base (8); a T-shaped hook (12) is vertically slidably sleeved on the support ring (11); a first electric cylinder (16) is suspended at the bottom of the support ring (11); a drive ring (17) for extending the T-shaped hook (12) upward is provided at the free end of the first electric cylinder (16); the T-shaped hook (12) extends downward to abut against the drive ring (17) and is sleeved with a spring near the bottom of the support ring (11).

3. The subway foundation pit construction pipeline settlement monitoring device according to claim 2 is characterized by: A turntable (14) is rotatably connected to the support ring (11) above, a plurality of radial slide grooves (15) are arranged on the edge of the turntable (14), a vertically slidable swing arm (13) is arranged on the T-shaped hook (12), the swing arm (13) and the T-shaped hook (12) rotate synchronously, the end of the swing arm (13) is slidably connected to the radial slide groove (15), a hook motor (18) is suspended at the bottom of the support ring (11), and the output shaft of the hook motor (18) is connected to the turntable (14) in a power manner.

4. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: An electric push rod (24) is provided on the top of the second connector base (19), and the free end of the electric push rod (24) drives the Z-shaped slide block (23) to rise.

5. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: Guide wheels (29) are provided on both sides of the lifting vehicle (5) to abut against the positioning rails (6), a first lifting gear motor (25) is provided on the outside of the lifting vehicle (5) to mesh with the rack rails (45) and to move, and brake calipers (30) are provided on both sides of the lifting vehicle (5) to abut against the positioning rails (6) for brake application.

6. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: The side of the lifting vehicle (5) is provided with an electric scissor fork (28) that moves in the horizontal direction, and the ground penetrating radar (27) is installed at the end of the electric scissor fork (28).

7. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: The guide rail hoisting assembly (2) comprises a main frame (32), a horizontal clamping roller (33), a mounting slide block (38) and a second electric cylinder (37). The horizontal clamping roller (33) is pressed against the surface of the guide rail (4) to position and clamp. The mounting slide block (38) is horizontally slidably arranged on the top of the main frame (32). The main frame (32) is provided with a second electric cylinder (37) for driving the mounting slide block (38) to move. The mounting slide block (38) can slide to the bottom of the mounting protrusion (7) for support. The top of the main frame (32) is provided with a second lifting gear motor (36) that meshes with the rack (45) and moves.

8. The pipeline settlement monitoring device for subway foundation pit construction according to claim 1 is characterized by: The guide rail hoisting assembly (2) is provided with a detachable static level (35) at the bottom, a vertically slidable laser target (39) is provided at the top of the static level (35), a float (40) is provided inside the static level (35), a connecting rod (41) is provided at the top of the float (40), the end of the connecting rod (41) passes through the top of the static level (35) and is fixedly connected to the laser target (39), and a laser rangefinder (26) pointing to the laser target (39) is fixedly provided on the outside of the lifting vehicle (5).

9. The subway foundation pit construction pipeline settlement monitoring device according to claim 1 is characterized by: The guide rail flipping assembly (3) comprises a guide wheel (42), a clamping slide block (43) and a third electric cylinder (44); the guide wheel (42) is in contact with the outer side of the guide rail (4); the third electric cylinder (44) drives the clamping slide block (43) to move in a horizontal direction; the clamping slide block (43) clamps both sides of the guide rail (4); after the guide rail flipping assembly (3) drives the guide rail (4) to flip, the clamping slide block (43) supports the bottom of the mounting protrusion (7).

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