Displacement detection mechanism for underwater pier construction

Abstract

The invention discloses a displacement detection mechanism for underwater bridge pier construction, and relates to the technical field of bridge pier displacement detection, and the displacement detection mechanism comprises a bridge pier body mounted below a bridge floor, and a detection outer frame mounted above the bridge pier body; detection mechanisms are rotationally arranged at four corners in the detection outer frame, and each detection mechanism comprises a detection turntable; cleaning mechanisms are arranged on the left side and the right side of the interior of the detection outer frame, each cleaning mechanism comprises a cleaning scraper, and the bottom end of each cleaning scraper is obliquely attached to the outer wall of the pier body in a sliding mode. According to the displacement detection mechanism for underwater bridge pier construction, the detection outer frame fixed to the bridge body is arranged outside the bridge pier in a sleeving mode, the detection mechanism is driven by water level changes to conduct active detection and cleaning, the cleaning mechanism is driven by water flow to clean the outer wall of the bridge pier, and attached aquatic organisms are assisted to be cleaned while deviation of the bridge pier is not affected; and the accuracy of offset detection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pier displacement detection, and particularly to a displacement detection mechanism for the construction of water-entry piers. Background Art

[0002] A water-entry pier refers to a pier that is partially or entirely underwater, usually used in the construction of cross-sea bridges or bridges with high river water levels. The design and construction of such piers need to overcome the buoyancy of water and the influence of water flow to ensure the stability and safety of the piers. Due to the continuous impact of water flow and the buoyancy effect of water level changes, the water-entry piers and bridge decks will experience displacements within and beyond the specified range during the construction and erection processes. Therefore, it is necessary to use a detection mechanism to detect the offset data in real time.

[0003] The invention disclosed in the publication number CN117387541A discloses a bridge displacement detection device for bridge construction. The hinge block can also deflect under the forward and backward displacement of the bridge, and according to the deflection amount, the position of the scale one pointed by the pointer one changes. The staff only needs to regularly observe the position of the scale one pointed by the pointer one to determine the distance of the forward and backward displacement of the bridge. When the bridge undergoes a settlement phenomenon, it will drive the suction cup and the disc to move downward synchronously, and the spring will be compressed, so that the pressure received by the lower pressure sensor increases. Through the change of the pressure on the pressure sensor, the displacement in the vertical direction generated during the settlement of the bridge can be detected.

[0004] The invention disclosed in the publication number CN119268559A discloses a displacement measurement device for the construction of extra-large bridges. By arranging the limit disc at the upper end of the fixed column inside the movable cavity at the bottom surface of the mounting plate, the fixed column is movably connected to the mounting plate, which can reduce the resistance of the device to the bridge displacement. And the limit disc is located in the middle of the inner side of the movable cavity, and there is a distance between the edge of the limit disc and the inner wall of the movable cavity, which allows the limit disc to make displacements in any direction inside the movable cavity, so as to measure the distance and direction of the bridge displacement on the pier, and can improve the accuracy and range of detection.

[0005] However, the above-mentioned disclosed displacement detection devices for piers still have the following problems in actual use: Although the displacement detection is realized through the detection mechanism arranged outside the pier, such detection mechanisms are installed in a fixed manner, and their detection methods are passive settings, unable to perform active detection when impacted by water flow and the water level rises or falls. At the same time, due to the impact of water flow on the pier, the carried shellfish and algae organisms are easily adsorbed on the outer wall of the pier, and then the range of the distance detection mechanism is reduced during the offset detection process, which easily leads to misjudgment of the detection mechanism and other situations.

[0006] Therefore, we propose a displacement detection mechanism for the construction of water-entry piers to solve the problems raised above. Summary of the Invention

[0007] The object of the present invention is to provide a displacement detection mechanism for the construction of water-entry piers, aiming to solve the problem that the existing displacement detection is realized by a detection mechanism arranged outside the pier. However, such a detection mechanism is installed in a fixed manner, and its detection method is passive, unable to perform active detection when impacted by water flow or when the water level rises and falls. At the same time, due to the impact of water flow on the pier, shellfish and algae organisms carried are easily adsorbed on the outer wall of the pier, thereby reducing the distance range of the detection mechanism during the offset detection process, which easily leads to misjudgment of the detection mechanism.

[0008] To achieve the above object, the present invention provides the following technical solution: A displacement detection mechanism for the construction of water-entry piers, including a pier body installed below the bridge deck, and a detection outer frame installed above the pier body. The detection outer frame is connected by left and right semi-circular structures and is fixedly connected to the bridge body. It further includes: Detection mechanisms are rotatably arranged at the four corners inside the detection outer frame. The detection mechanism includes a detection turntable, and detection sliding rods are slidably arranged at equal angles inside the detection turntable through abutment springs. Cleaning mechanisms are arranged on both the left and right sides inside the detection outer frame. The cleaning mechanism includes a cleaning scraper, and the bottom end of the cleaning scraper is in inclined contact and slides on the outer wall of the pier body.

[0009] Preferably, the detection mechanism includes a positioning bottom plate, and the positioning bottom plate is slidably arranged on the left and right sides below the pier body. Floating water partitions are fixedly installed on the outer sides of the symmetrically arranged positioning bottom plates, and the floating water partitions use buoyancy to drive the positioning bottom plate to always be above the water surface.

[0010] Preferably, the detection mechanism includes a lifting sleeve, and the bottom end of the lifting sleeve is fixedly installed on the front and rear sides of the top surface of the positioning bottom plate. A driving rotating shaft is arranged inside the symmetrically arranged lifting sleeves, and the driving rotating shaft is helically connected to the inside of the lifting sleeve through a spiral guide groove on the outer wall.

[0011] Preferably, the upper end of the driving rotating shaft included in the detection mechanism is rotatably supported by a bearing inside the detection outer frame. The driving rotating shaft is fixedly installed in the middle of the detection turntable. A data transceiver is fixedly installed on the top surface of the detection outer frame, and the cable of the data transceiver passes through the driving rotating shaft, the detection turntable, and is connected to the detection sliding rod.

[0012] Preferably, the cleaning mechanism includes a drainage vortex fan, and the drainage vortex fan is rotatably supported by a bearing on the front and rear sides of the bottom surfaces of the left and right positioning bottom plates. A transmission rotating shaft is meshed through a bevel gear set at the rotating shaft on the side of the drainage vortex fan close to the pier body, and the transmission rotating shaft is rotatably supported by a bearing on the front and rear sides inside the positioning bottom plate.

[0013] Preferably, the cleaning mechanism includes a transmission sleeve, and the transmission sleeve is rotatably arranged on the left and right sides below the detection outer frame in a front-back symmetric manner by bearings. The bottom end of the transmission sleeve is slidably connected to the top end of the transmission rotating shaft, and the transmission sleeve is engaged with the semi-circular groove outside the transmission rotating shaft through the symmetrically arranged semi-circular protrusions inside.

[0014] Preferably, the cleaning mechanism includes a reciprocating lead screw, and the bottom end of the reciprocating lead screw is fixedly installed at the top end of the symmetrically arranged transmission sleeve. The upper end of the reciprocating lead screw is rotatably arranged on the upper outer wall of the detection outer frame through a bearing, and the outer walls of the symmetrically arranged reciprocating lead screws are threadedly connected to the outer ends of the transmission brackets.

[0015] Preferably, the cleaning mechanism includes offset chutes, and the offset chutes are opened on the front and back sides inside the cleaning scraper. The inner ends of the symmetrically arranged offset chutes are elastically slidably connected to the inner ends of the transmission brackets, and the transmission brackets cooperate with the elastically connected offset chutes to enable the cleaning scraper not to affect the offset of the pier body, so that the cleaning scraper can clean the detection area on the outer wall of the pier body.

[0016] Preferably, the detection mechanism includes a chip removal arc plate elastically slidably arranged inside the detection outer frame. Driving gears are rotatably arranged at the four corners of the bottom surface of the detection outer frame through torsion springs. A traction cable is wound around the lower end rotating shaft of the driving gear, and the other end of the traction cable is fixedly connected to the bottom end of the chip removal arc plate. After the traction cable is wound up, it drives the chip removal arc plate to slide towards the detection slide bar.

[0017] Preferably, the detection mechanism includes an incomplete gear fixedly installed on the outer wall of the driving rotating shaft. The incomplete gear is meshed with the driving gear on the bottom surface of the detection outer frame, and the driving gear rotates to drive the traction cable to be wound up, so that the traction cable drives the chip removal arc plate to perform contact cleaning on the rotating multiple detection slide bars.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: For the displacement detection mechanism for underwater pier construction, the detection outer frame fixed to the bridge body is sleeved outside the pier. The detection mechanism is driven by the water level change for active detection and cleaning, and the cleaning mechanism is driven by the water flow to clean the outer wall of the pier. While not affecting its offset, it assists in cleaning the attached aquatic organisms and improves the accuracy of offset detection. The specific content is as follows: 1. The detection outer frame is sleeved and installed on the outer wall of the pier body, and is fixedly connected to the bridge body through the bracket at the top. The positioning bottom plate connected below is located above the water surface through the floating water partition on the outside, and the floating water partition and the positioning bottom plate are driven to move by the rise and fall of the water level, so that the lifting sleeve drives the driving rotating shaft connected by the spiral guide groove to rotate during the lifting process.

[0019] Further, the rotating drive shaft drives the detection turntable and the detection slide bar inside the detection outer frame to rotate continuously, thereby actively detecting the offset of the pier body, and improving the timeliness of the detection when the pier body is impacted by the water flow.

[0020] 2. During the lifting process of the positioning base plate, the drive shaft is driven to rotate. The incomplete gear on the outer wall of the drive shaft meshes with the drive gear to rotate and wind up the traction steel cable, so that the traction steel cable drives the chip removal arc plate fixedly connected to the other end to move towards the detection slide bar, thereby cleaning the detection slide bar by fitting, and avoiding the influence of attached shellfish and algae organisms on the detection operation.

[0021] Further, the large-scale rising and falling water level drives the positioning base plate to lift. When the incomplete gear rotates continuously, the drive gear meshing with it does not mesh when passing through the toothless part of the incomplete gear, and then resets through the torsion spring, so that the chip removal arc plate resets, and thus the cleaning operation of the chip removal arc plate will not be affected by the excessive lifting and falling of the water level.

[0022] 3. The drainage vortex fan under the positioning base plate is located in the water, and the water flow drives the drainage vortex fan and the transmission shaft arranged inside the water isolation frame to rotate. The transmission shaft rotates through the cooperation of the semi-circular groove, the transmission sleeve and the reciprocating lead screw at its top, driving the transmission bracket connected by threads to drive the cleaning scraper to reciprocate up and down, so as to clean the outer wall of the pier body and avoid the influence of attached aquatic organisms on the accuracy of the offset detection.

[0023] Further, the cleaning scraper is connected to the transmission bracket through the offset chute inside, so that when the pier body is displaced, the attached cleaning scraper is driven to move, while the transmission bracket elastically slidably connected inside the offset chute does not follow the offset and does not affect the cleaning operation of the cleaning scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic three-dimensional structure diagram of the whole invention; Figure 2 is a schematic three-dimensional structure diagram of the detection outer frame of the invention; Figure 3 is a schematic three-dimensional structure diagram of the positioning base plate of the invention; Figure 4 is a schematic installation structure diagram of the floating water partition of the invention; Figure 5 is for the invention Figure 4 The enlarged structure diagram at A in; Figure 6 is a schematic structure diagram of the connection between the lifting sleeve and the drive shaft of the invention; Figure 7 is for the invention Figure 6 The enlarged structure diagram at B in; Figure 8 Schematic diagram of the installation structure of the detection slide bar and the data transceiver for the present invention; Figure 9 Schematic diagram of the installation structure of the drainage vortex fan for the present invention; Figure 10 Schematic diagram of the connection structure between the transmission rotating shaft and the drainage vortex fan of the present invention; Figure 11 Schematic diagram of the three - dimensional structure of the cleaning scraper for the present invention.

[0025] In the figure: 1, pier body; 2, detection outer frame; 3, detection turntable; 4, abutment spring; 5, detection slide bar; 6, cleaning scraper; 7, positioning bottom plate; 8, floating water partition; 9, lifting sleeve; 10, driving rotating shaft; 11, spiral guide groove; 12, data transceiver; 13, drainage vortex fan; 14, bevel gear set; 15, transmission rotating shaft; 16, transmission sleeve; 17, reciprocating lead screw; 18, transmission bracket; 19, offset chute; 20, chip - removing arc plate; 21, driving gear; 22, towing steel cable; 23, incomplete gear. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 11 , the present invention provides the following technical solutions: Embodiment 1: To solve the problems existing in the use of the existing pier displacement detection mechanism, the following technical solutions are disclosed in this embodiment. A displacement detection mechanism for underwater pier construction includes a pier body 1 installed below the bridge deck and a detection outer frame 2 installed above the pier body 1. The detection outer frame 2 is connected by left and right semi - circular structures and is fixedly connected to the bridge body; detection mechanisms are rotatably arranged at the four corners inside the detection outer frame 2, and the detection mechanism includes a detection turntable 3. Inside the detection turntable 3, detection slide bars 5 are slidably arranged at equal angles through abutment springs 4; the detection mechanism includes a positioning bottom plate 7, and the positioning bottom plate 7 is slidably arranged on the lower left and right sides of the pier body 1. Floating water partitions 8 are fixedly installed on the outer sides of the symmetrically arranged positioning bottom plates 7, and the floating water partitions 8 use buoyancy to drive the positioning bottom plate 7 to always be above the water surface.

[0028] The detection mechanism includes a lifting sleeve 9, and the bottom end of the lifting sleeve 9 is fixedly installed on the front and rear sides of the top surface of the positioning base plate 7. And a driving rotating shaft 10 is arranged inside the symmetrically arranged lifting sleeves 9. Moreover, the driving rotating shaft 10 is spirally connected to the inside of the lifting sleeve 9 through a spiral guide groove 11 on the outer wall; the upper end of the driving rotating shaft 10 included in the detection mechanism is rotatably installed in the detection outer frame 2 through bearings, and the driving rotating shaft 10 is fixedly installed in the middle of the detection turntable 3. And a data transceiver 12 is fixedly installed on the top surface of the detection outer frame 2. Moreover, the cable of the data transceiver 12 passes through the driving rotating shaft 10, the detection turntable 3 and the detection slide bar 5 and is connected to each other.

[0029] As Figures 4 - 5 , Figure 8 shown, the detection outer frame 2 is sleeved and installed on the outer wall above the pier body 1 in a semicircular structure. At the same time, the detection outer frame 2 is fixedly connected to the bridge body, so that the detection mechanism of the detection outer frame 2 does not shift and misalign with the pier body 1. And the positioning base plates 7 symmetrically arranged below the detection outer frame 2 are always above the water level through the floating water partitions 8 on the outside. The floating water partitions 8 drive the positioning base plates 7 to rise and fall with the water level through their own buoyancy.

[0030] Furthermore, during the process of the positioning base plate 7 rising and falling with the water level, it drives the lifting sleeve 9 fixedly connected to the top surface to move synchronously, and then drives the driving rotating shaft 10 connected through the spiral guide groove 11 to rotate. Then the driving rotating shaft 10 drives the detection turntable 3 arranged inside the detection outer frame 2 to rotate. The detection turntable 3 actively detects the detection slide bar 5 connected through the abutment spring 4 inside during the rotation, aiming to detect the offset distance of the water-entry pier after being impacted by the water flow.

[0031] When the pier offsets beyond the range, it comes into contact with the rotating detection slide bar 5 and drives the detection slide bar 5 to move into the detection turntable 3, so as to transmit the offset data to the corresponding data transceiver 12 at the top of the detection outer frame 2 for the management personnel to make risk responses.

[0032] Embodiment 2: To solve the problems existing in the use of the existing pier displacement detection mechanism, the following technical solutions are disclosed in this embodiment. The detection mechanism includes a chip-removing arc plate 20 elastically and slidably arranged inside the detection outer frame 2. At the four corners of the bottom surface of the detection outer frame 2, drive gears 21 are rotatably arranged through torsion springs. At the lower end rotating shaft of the drive gear 21, a traction steel cable 22 is wound and connected. The other end of the traction steel cable 22 is fixedly connected to the bottom end of the chip-removing arc plate 20. After the traction steel cable 22 is wound up, it drives the chip-removing arc plate 20 to slide towards the detection slide bar 5. The detection mechanism includes an incomplete gear 23 fixedly installed on the outer wall of the drive rotating shaft 10. The incomplete gear 23 is meshed with the drive gear 21 on the bottom surface of the detection outer frame 2. The rotation of the drive gear 21 is used to drive the traction steel cable 22 to be wound up, so that the traction steel cable 22 drives the chip-removing arc plate 20 to perform contact cleaning on the rotating multiple detection slide bars 5.

[0033] As Figures 5 - 7 shown, due to the rise and fall of the water level, the positioning bottom plate 7 and the lifting sleeve 9 are lifted and lowered synchronously, so that the drive rotating shaft 10 connected to the spiral guide groove 11 drives the incomplete gear 23 on the outer wall to rotate. After the incomplete gear 23 meshes with the drive gear 21, the traction steel cable 22 at the rotating shaft is wound up, so that the other end of the traction steel cable 22 drives the fixedly connected chip-removing arc plate 20 to move towards the detection slide bar 5. After fitting the detection slide bar 5, foreign matters and residual aquatic organisms are cleaned to avoid affecting the detection data.

[0034] Furthermore, when the water level rises or falls significantly, the incomplete gear 23 rotates multiple circles following the lifting sleeve 9. However, whenever the incomplete gear 23 rotates one circle, the drive gear 21 meshed with it will rotate back to its original position through the torsion spring structure, so that the chip-removing arc plate 20 returns to its initial position. Therefore, the rise and fall of the water level will not affect the cleaning operation of the chip-removing arc plate 20 for the detection mechanism.

[0035] Embodiment 3: To solve the problems existing in the use of the existing pier displacement detection mechanism, the following technical solutions are disclosed in this embodiment. Cleaning mechanisms are arranged on both the left and right sides inside the detection outer frame 2. The cleaning mechanism includes a cleaning scraper 6, and the bottom end of the cleaning scraper 6 is inclined and fits and slides on the outer wall of the pier body 1. The cleaning mechanism includes a drainage vortex fan 13, and the drainage vortex fan 13 is rotatably arranged through bearings on the front and rear sides of the bottom surfaces of the left and right positioning bottom plates 7. At the rotating shaft on the side of the drainage vortex fan 13 close to the pier body 1, a transmission rotating shaft 15 is meshed through a bevel gear set 14. The transmission rotating shaft 15 is rotatably arranged through bearings on the front and rear sides inside the positioning bottom plate 7.

[0036] The cleaning mechanism includes a transmission sleeve 16, and the transmission sleeve 16 is rotationally arranged on the left and right sides below the detection outer frame 2 in a front-back symmetric manner by bearings. Moreover, the bottom end of the transmission sleeve 16 is slidably connected to the top end of the transmission rotating shaft 15, and the transmission sleeve 16 is engaged with the semi-circular groove outside the transmission rotating shaft 15 through the symmetrically arranged semi-circular protrusions inside.

[0037] As Figures 9 - 10 shown, the floating water baffle 8 drives the positioning bottom plate 7 above the water surface, while the drainage vortex fan 13 arranged on the bottom surface of the positioning bottom plate 7 is located in the water, and the water flow drives the drainage vortex fan 13 to rotate. The drainage vortex fan 13 drives the engaged transmission rotating shaft 15 to rotate through the bevel gear set 14 inside the rear water isolation frame. At the same time, the transmission rotating shaft 15 cooperates with the semi-circular protrusion inside the transmission sleeve 16 through the opened semi-circular groove, and then drives the transmission sleeve 16 to rotate during the rotation process.

[0038] Furthermore, since the floating water baffle 8 and the positioning bottom plate 7 are always above the water surface, when the water level changes, the positioning bottom plate 7 will also drive the drainage vortex fan 13 at the bottom to rise and fall, but the drainage vortex fan 13 is always located in the water, and the distance difference of the rise and fall is compensated by driving the transmission rotating shaft 15 to slide inside the transmission sleeve 16 through the positioning bottom plate 7, so as to achieve continuous transmission under different water level conditions.

[0039] The cleaning mechanism includes a reciprocating lead screw 17, and the bottom end of the reciprocating lead screw 17 is fixedly installed at the top end of the symmetrically arranged transmission sleeve 16. Moreover, the upper end of the reciprocating lead screw 17 is rotationally arranged on the outer wall above the detection outer frame 2 through a bearing, and the outer wall of the symmetrically arranged reciprocating lead screw 17 is threadedly connected to the outer end of the transmission bracket 18; the cleaning mechanism includes an offset sliding groove 19, and the offset sliding groove 19 is opened on the front and rear sides inside the cleaning scraper 6. Moreover, the inside of the symmetrically arranged offset sliding groove 19 is elastically slidably connected to the inner end of the transmission bracket 18, and the transmission bracket 18 cooperates with the elastically connected offset sliding groove 19 to enable the cleaning scraper 6 not to affect the offset of the pier body 1, so that the cleaning scraper 6 can clean the detection area on the outer wall of the pier body 1.

[0040] As Figures 9 - 11 shown, the transmission sleeve 16 rotates below the detection outer frame 2. After the reciprocating lead screw 17 fixedly connected to its top end rotates, it drives the transmission bracket 18 threadedly connected to the outer wall to reciprocate up and down in the limit of the cleaning scraper 6, and the transmission bracket 18 drives the cleaning scraper 6 to reciprocate up and down. The bottom end of the cleaning scraper 6 fits and slides on the outer wall of the pier body 1, so as to clean the outer wall of the pier body 1 and prevent shellfish and algae organisms carried by the water flow impact from attaching to the outer wall of the pier body 1 and affecting the detection value range after the pier body 1 offsets.

[0041] Further, when the pier body 1 is displaced, the cleaning scraper 6 that is fitted and connected thereto moves through the displacement chute 19 opened therein, while the transmission bracket 18 elastically connected inside the displacement chute 19 does not move along and can drive the displaced cleaning scraper 6 to continue moving during lifting, so as to prevent the cleaning scraper 6 from affecting the displacement detection of the pier body 1.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A displacement detection mechanism for the construction of a water-entry pier, comprising a pier body (1) installed below the bridge deck, and a detection outer frame (2) installed above the pier body (1), and the detection outer frame (2) is connected by left and right semi-circular structures, and the detection outer frame (2) is fixedly connected to the bridge body; It is characterized in that: Detection mechanisms are rotatably arranged at the four corners inside the detection outer frame (2), and the detection mechanisms include detection turntables (3), and detection sliding rods (5) are slidably arranged inside the detection turntables (3) at equal angles through abutment springs (4); Cleaning mechanisms are arranged on both the left and right sides inside the detection outer frame (2), and the cleaning mechanisms include cleaning scrapers (6), and the bottom ends of the cleaning scrapers (6) are inclined and fit and slide on the outer wall of the pier body (1).

2. The displacement detection mechanism for the construction of an underwater bridge pier according to claim 1, characterized in that: The detection mechanism includes positioning bottom plates (7), and the positioning bottom plates (7) are slidably arranged on the lower left and right sides of the pier body (1), and floating water partitions (8) are fixedly installed on the outer sides of the symmetrically arranged positioning bottom plates (7), and the floating water partitions (8) are used to drive the positioning bottom plates (7) to always be above the water surface by buoyancy.

3. The displacement detection mechanism for the construction of a pier immersed in water according to claim 2, wherein: The detection mechanism includes lifting sleeves (9), and the bottom ends of the lifting sleeves (9) are fixedly installed on the front and rear sides of the top surface of the positioning bottom plates (7), and drive rotating shafts (10) are arranged inside the symmetrically arranged lifting sleeves (9), and the drive rotating shafts (10) are helically connected to the inside of the lifting sleeves (9) through spiral guide grooves (11) on the outer walls.

4. The displacement detection mechanism for underwater pier construction according to claim 3, characterized in that: The upper ends of the drive rotating shafts (10) included in the detection mechanism are rotatably supported by bearings inside the detection outer frame (2), and the drive rotating shafts (10) are fixedly installed in the middle of the detection turntables (3), and a data transceiver (12) is fixedly installed on the top surface of the detection outer frame (2), and the cable of the data transceiver (12) passes through the drive rotating shaft (10) and is connected to the detection turntable (3) and the detection sliding rod (5).

5. The displacement detection mechanism for the construction of a pier immersed in water according to claim 1, characterized in that: The cleaning mechanism includes drainage vortex fans (13), and the drainage vortex fans (13) are rotatably supported by bearings on the front and rear sides of the bottom surfaces of the left and right positioning bottom plates (7), and a transmission rotating shaft (15) is meshed with the shaft on the side of the drainage vortex fan (13) close to the pier body (1) through a bevel gear set (14), and the transmission rotating shaft (15) is rotatably supported by bearings on the front and rear sides inside the positioning bottom plates (7).

6. The displacement detection mechanism for the construction of a pier entering water according to claim 5, characterized in that: The cleaning mechanism includes transmission sleeves (16), and the transmission sleeves (16) are rotatably supported by bearings on the left and right sides below the detection outer frame (2) in a front and rear symmetric manner, and the bottom ends of the transmission sleeves (16) are slidably connected to the top ends of the transmission rotating shafts (15), and the transmission sleeves (16) are engaged with the semi-circular grooves outside the transmission rotating shafts (15) through semi-circular protrusions symmetrically arranged inside.

7. The displacement detection mechanism for the construction of a pier entering water according to claim 6, characterized in that: The cleaning mechanism includes a reciprocating lead screw (17), and the bottom end of the reciprocating lead screw (17) is fixedly installed at the top end of symmetrically arranged transmission sleeves (16). Moreover, the upper end of the reciprocating lead screw (17) is rotatably arranged on the outer wall above the detection outer frame (2) through a bearing. And the outer walls of the symmetrically arranged reciprocating lead screws (17) are threadedly connected to the outer ends of the transmission brackets (18).

8. The displacement detection mechanism for the construction of a pier immersed in water according to claim 7, characterized in that: The cleaning mechanism includes offset chutes (19), and the offset chutes (19) are opened on the front and rear sides inside the cleaning scraper (6). And the inner ends of the symmetrically arranged offset chutes (19) are elastically slidably connected to the inner ends of the transmission brackets (18). Moreover, the transmission brackets (18) cooperate with the elastically connected offset chutes (19) to enable the cleaning scraper (6) not to affect the offset of the pier body (1), so that the cleaning scraper (6) can clean the detection area on the outer wall of the pier body (1).

9. The displacement detection mechanism for the construction of a pier entering water according to claim 1, characterized in that: The detection mechanism includes a chip-removing arc plate (20) elastically slidably arranged inside the detection outer frame (2). And driving gears (21) are rotatably arranged at the four corners of the bottom surface of the detection outer frame (2) through torsion springs. And a traction steel cable (22) is wound around the lower end rotating shaft of the driving gear (21). And the other end of the traction steel cable (22) is fixedly connected to the bottom end of the chip-removing arc plate (20). And after the traction steel cable (22) is wound up, it drives the chip-removing arc plate (20) to slide towards the detection slide bar (5).

10. The displacement detection mechanism for the construction of a pier entering water according to claim 1, characterized in that: The detection mechanism includes an incomplete gear (23) fixedly installed on the outer wall of the driving rotating shaft (10). And the incomplete gear (23) is meshed with the driving gear (21) on the bottom surface of the detection outer frame (2). And the rotation of the driving gear (21) is used to drive the traction steel cable (22) to be wound up, so that the traction steel cable (22) drives the chip-removing arc plate (20) to perform contact cleaning on the rotating plurality of detection slide bars (5).

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