A real-time digital display control device for super-pouring height of a cast-in-place pile and a construction method using the device

Abstract

The application relates to the engineering technical field and is a kind of real-time digital display control device for super-pouring height of a cast-in-place pile and a construction method adopting the device. The device comprises a main wheel disc fixing frame, the main wheel disc fixing frame is composed of a hollow water-permeable steel plate, a first annular steel plate, a second annular steel plate and a ball bearing sliding type steel guide rail, the inner side of the hollow water-permeable steel plate is provided with the second annular steel plate, the outer side of the hollow water-permeable steel plate is provided with the first annular steel plate, and the outer side of the first annular steel plate is provided with the ball bearing sliding type steel guide rail; a plurality of telescopic supporting sliding measuring arms, the telescopic supporting sliding measuring arms comprise sliding connecting arms and fixed measuring arms. Compared with the prior art, the application has the advantages that the real-time display of the height greatly reduces the work content of the workers, the concrete liquid level can be uniformly and stably raised through the device, and the movable guide rail and the telescopic measuring arm can be used for the cast-in-place piles with various diameters.

Description

Technical Field

[0001] The invention relates to the technical field of engineering, in particular to a real-time digital display control device for over-filling height of a cast-in-place pile and a construction method using the device. Background Art

[0002] As one of the foundation forms widely used in my country, bored cast-in-place piles have the advantages of mature technology and convenient construction. However, due to the technical requirements, almost every bored cast-in-place pile needs to be over-cast. The current over-casting control measures are mostly manual measurement using a measuring rope. Practice has shown that manual measurement with a measuring rope has poor uniformity and low accuracy due to the small contact area with the concrete. Manual measurement has high requirements on the experience of construction personnel, and the pouring speed and quantity of concrete need to be determined according to the measured height. If the control is not good, the over-casting height of the pile head will be too high. In view of the fact that the volume of bored piles accounts for a large proportion, it is easy to cause excessive material consumption and cost losses.

[0003] Chinese utility model patent publication number CN213653539U discloses a bored pile overfill measurement probe. This probe determines the overfill height of the bored pile based on its insertion depth and the thickness of the floating slurry, enabling accurate measurement of the overfill height of bored piles. However, the process requires continuous insertion of the probe and continuous collection of the floating slurry thickness to measure the overfill height, making it difficult to accurately and dynamically detect the overfill height in real time.

[0004] A Chinese invention patent with authorization publication number CN113216193B discloses a device and method for controlling the over-filling height of underwater bored pile concrete. Based on the difference between the slurry density and the concrete density in the bored pile, the device monitors the lateral earth pressure generated on the sidewalls of the bored pile hole to calculate the over-filling height. However, its arc-shaped earth pressure monitoring box must be located at the bottom of the bored pile hole and is affected by the concrete pressure during pouring, resulting in large measurement errors and difficult data transmission. Furthermore, the device must be removed from the very bottom, which is very inconvenient. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a real-time digital display control device for the over-filling height of bored piles with high measurement accuracy, which can meet the real-time monitoring requirements of the over-filling height of bored piles with various diameters while making the concrete liquid level rise steadily and evenly.

[0006] In order to achieve the above-mentioned purpose, a real-time digital display control device for the over-filling height of bored piles is designed, including a main wheel disc fixing frame, the main wheel disc fixing frame is composed of a hollow permeable steel plate, a first annular steel plate, a second annular steel plate and a ball bearing sliding steel guide rail, the inner side of the hollow permeable steel plate is provided with a second annular steel plate, the outer side of the hollow permeable steel plate is provided with a first annular steel plate, and the outer side of the first annular steel plate is provided with a ball bearing sliding steel guide rail; a plurality of telescopic supporting sliding measuring arms, the telescopic supporting sliding measuring arms include a sliding connecting arm and a fixed measuring arm, a guide rail fixed connecting plate is provided at one end of the inner side of the sliding connecting arm, and the guide rail fixed connecting plate is used to cooperate with the ball bearing sliding steel guide rail , so that the telescopic support sliding measuring arm moves along the steel guide rail, the fixed measuring arm is provided with a through groove running through the upper and lower parts near the outer end, and the through groove is provided with a wheelbase measuring wheel and a concave fixed wheel, and the fixed measuring arm for connecting the concave fixed wheel part is an openable structure, and the sliding connecting arm and the fixed measuring arm are connected by an arm length telescopic adjuster; a plurality of telescopic permeable fixed connecting plates, the telescopic permeable fixed connecting plate is arranged between two adjacent telescopic support sliding measuring arms, the telescopic permeable fixed connecting plate is composed of a fixed slide plate and an embedded telescopic plate, the fixed slide plate is connected to the telescopic support sliding measuring arm, and the embedded telescopic plate is connected to the adjacent telescopic support sliding measuring arm after adjusting the width.

[0007] The present invention also has the following preferred technical solutions:

[0008] 1. Also includes a plurality of lifting rings arranged on the second annular steel plate.

[0009] 2. The hollow permeable steel plate is provided with a plurality of permeable holes along a circular direction.

[0010] 3. The circular hole inside the second annular steel plate of the main wheel disc fixing frame is used to install the cast-in-place pile concrete pouring conduit.

[0011] 4. The ball bearing sliding steel guide rail has steel balls embedded in the upper and lower ends.

[0012] 5. The sliding connecting arm is composed of a square steel tube, a reinforcing rib and a guide rail fixed connecting plate. Vertical reinforcing ribs are placed inside the square steel tube. The outer end of the square steel tube is sealed with a wedge-shaped steel plate. The inner end of the square steel tube is connected to the guide rail fixed connecting plate and reinforced with a triangular reinforcing rib to facilitate the movement of the sliding connecting arm in the ball bearing sliding steel guide rail.

[0013] 6. The fixed measuring arm consists of a second square steel tube and reinforcing ribs. Vertical reinforcing ribs are placed inside the second square steel tube. The inner end of the second square steel tube is sealed with a wedge-shaped steel plate. The outer end of the second square steel tube is provided with a through slot with upper and lower openings for mounting the wheelbase measuring wheel and the recessed fixed wheel. The wheelbase measuring wheel and the recessed fixed wheel are connected with a pin, nuts and bolts. The square steel tube at the recessed fixed wheel position is a movable and openable structure.

[0014] 7. One side of the openable structure is a movable end, and the other side is a closing end. The movable end is connected by a movable steel hinge, and the closing end is fixedly connected by a lock. After the closing end is opened, the main reinforcement is set between the wheelbase measuring wheel and the concave fixed wheel.

[0015] 8. The sliding connecting arm and the fixed measuring arm are connected by an arm length telescopic adjuster, a sliding limiter, and a telescopic cable bridge. The arm length telescopic adjuster adopts a hydraulically adjustable telescopic device, which is installed at the ends of the sliding connecting arm and the fixed measuring arm and is located in the middle of the wedge-shaped steel plate. The outer end of the sliding connecting arm is provided with a number of sliding limiters along the circumference of the arm length telescopic adjuster.

[0016] 9. A telescopic cable bridge is provided on the top surface of the telescopic supporting sliding measuring arm to protect the data transmission cable of the wheelbase measuring wheel. The telescopic cable bridge is a two-part telescopic structure that can be extended and retracted as the length of the telescopic supporting sliding measuring arm changes. A fastener lock hole is provided on the side of the telescopic supporting sliding measuring arm to connect the telescopic permeable fixed connecting plate.

[0017] 10. The fixed slide plate and the embedded telescopic plate of the telescopic water-permeable fixed connecting plate are both provided with a plurality of water-permeable holes, and a plurality of lock buckles matching the telescopic supporting sliding measuring arm are respectively provided at both ends of the telescopic water-permeable fixed connecting plate.

[0018] 11. It also includes a fully sealed waterproof data processing device, which is composed of a waterproof steel plate and a waterproof sealing strip, and is installed above the hollow permeable steel plate. The top steel plate is detachable and connected with rust-proof bolts; a data cable, one end of which is connected to the fully sealed waterproof data processing device, and the other end is connected to the data display device.

[0019] A construction method using the real-time digital display control device for the over-filling height of bored piles is also designed, and the method is specifically as follows: S1. Before use, the steel cage of the bored pile must be processed first, and at least one reinforcing stirrup must be welded at the top of the pile. When the last section of the bored pile steel cage is lowered, the length of the telescopic support sliding measuring arm and the telescopic permeable fixed connecting plate is adjusted to a position that matches the longitudinal main reinforcement of the bored pile steel cage, and the lock of the telescopic permeable fixed connecting plate and the telescopic support sliding measuring arm is connected in place and locked; S2. Use a lifting device to lift the device by passing the steel strand through the lifting ring, open the lock of the wheelbase measuring wheel at the outer end of the telescopic support sliding measuring arm and the concave fixed wheel, so that each telescopic support sliding measuring arm is at the main reinforcement of the steel cage, close the lock at the concave fixed wheel, and the bored pile over-filling height is increased. After the real-time digital display control device for the height of the bored pile is fixed on the steel cage, it is slowly lowered so that it lands smoothly on the position of the reinforced stirrups at the top of the pile; S3. Debug the device to reset the initial distance of the wheelbase measuring wheel to zero; S4. Lower the real-time digital display control device for the over-filling height of the bored pile to the steel cage of the bored pile to the designed elevation, and then lower the concrete conduit for pouring. The upward thrust of the mud replacement is offset by the deadweight of the device and the structure of the permeable steel plate; S5. When the concrete is poured to the top of the pile and contacts the real-time digital display control device for the over-filling height of the bored pile, the concrete cannot pass through the permeable steel plate, thereby evenly pushing the real-time digital display control device for the over-filling height of the bored pile to rise, and the wheelbase measuring wheel will also rotate accordingly. The rotation data of each wheelbase measuring wheel is processed by a fully sealed and waterproof data processing device and displayed on the data display device through a data connection cable.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The real-time display of height greatly reduces the workload of operators. Operators can adjust and stop the filling operation according to the filling height displayed in real time on the LED data display device, without having to measure the liquid level every moment, thereby improving construction efficiency.

[0022] 2. Through this device, the concrete liquid level can rise more steadily and evenly, compared with the traditional method where the liquid level rises unevenly with some highs and some lows, so the measurement accuracy is higher than that of traditional manual measurement;

[0023] 3. The movable slide rail and retractable measuring arm make this device applicable to cast-in-place piles of various pile diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the real-time digital display control device for the overfilling height of a bored pile according to the present invention;

[0025] Figure 2 This is a structural diagram of the main wheel disc fixing frame of the present invention;

[0026] Figure 3 This is a structural diagram of the telescopic support sliding measuring arm of the present invention;

[0027] Figure 4 This is a structural diagram of the retractable water-permeable fixed connecting plate of the present invention;

[0028] Figure 5 This is a structural diagram of the fully sealed and waterproof data processing device of the present invention;

[0029] Figure 6 It is a structural diagram of the data transmission link line of the present invention;

[0030] Figure 7 It is a construction structure diagram of the present invention;

[0031] Figure 8 This is a structural diagram of the recessed fixed wheel openable structure of the present invention;

[0032] Figure: 1. Main wheel disc fixing frame; 2. Hollow permeable steel plate; 3. First annular steel plate; 4. Second annular steel plate; 5. Ball bearing sliding steel guide rail; 6. Telescopic support sliding measuring arm; 7. Sliding connecting arm; 8. Fixed measuring arm; 9. Guide rail fixed connecting plate; 10. Wheelbase measuring wheel; 11. Concave fixed wheel; 12. Reinforced stirrups; 13. Telescopic permeable fixed connecting plate; 14. Fixed slide rail plate; 15. Embedded telescopic plate; 16. Lifting ring; 17. Permeable Water hole; 18. Concrete pouring conduit for bored piles; 19. Square steel pipe; 20. Triangular reinforcing ribs; 21. Wedge-shaped steel plate; 22. Pins, nuts, and bolts; 23. Main reinforcement; 24. Telescopic arm length adjuster; 25. Sliding limiter; 26. Telescopic cable tray; 27. Fastener lock hole; 28. Water-permeable hole; 29. ​​Lock; 30. Fully sealed waterproof data processing device; 31. Waterproof steel plate; 32. Waterproof sealing strip; 33. Data cable; 34. Data display equipment. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings. The structure and principle of the present invention will be very clear to those skilled in the art. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention.

[0034] Example 1: A real-time digital display control device for overfilling height of bored piles

[0035] like Figure 1 、 2As shown, the main wheel disc fixing frame 1 is composed of a customized hollow water-permeable steel plate 2, a first annular steel plate 3, a second annular steel plate 4, a ball bearing sliding steel guide rail 5, and a lifting ring 16 assembly. The hollow water-permeable steel plate 2 is customized from a stainless steel plate, and water-permeable holes 17 are formed in the steel plate along the annular direction to facilitate the smooth passage of slurry during concrete pouring and to increase the contact area between the device and the concrete surface. The hollow water-permeable steel plate 2 is installed between the first annular steel plate 3 and the second annular steel plate 4 and is connected to the two annular steel plates using full welding. The first annular steel plate 3 is customized from a stainless steel plate and is installed on the outside of the hollow water-permeable steel plate 2. It is connected to the hollow water-permeable steel plate 2 using full welding. The second annular steel plate 4 is customized from a stainless steel plate and is installed on the inside of the hollow water-permeable steel plate 2. It is connected to the hollow water-permeable steel plate 2 using full welding. The circular hole in the second annular steel plate 4 is used to install a cast-in-place pile concrete pouring guide pipe 18. The ball bearing sliding steel guide rail 5 is customized from a stainless steel plate, with steel balls embedded at the upper and lower ends of the guide rail. The ball bearing sliding steel guide rail 5 is installed on the outside of the first annular steel plate 3 and is connected to the first annular steel plate 3 using full welding. The lifting ring 16 is bent from HPB300 grade steel reinforcement and is installed on the top surface of the second annular steel plate 4. It is connected to the second annular steel plate 4 using full welding.

[0036] As shown, Figure 3 The telescopic support sliding measurement arm 6 is composed of a measurement arm, an arm length telescopic adjuster 24, a sliding limiter 25, a wheel track measurement wheel 10, a concave fixed wheel 11, a fastener lock hole 27, and a telescopic cable bridge 26 assembly. The measurement arm is divided into two parts: a sliding connection arm 7 and a fixed measurement arm 8. The sliding connection arm 7 is made of a square steel pipe 19, a reinforcing rib plate, and a guide rail fixing plate 9. The guide rail fixing plate 9 is used in conjunction with the ball bearing sliding steel guide rail 5. The vertical reinforcing rib plate is placed inside the customized square steel pipe 19. The front end is sealed with a thickened wedge-shaped steel plate 21, and the rear end steel plate is connected to the embedded guide rail steel plate and reinforced with a triangular reinforcing rib plate 20. This allows the sliding connection arm 7 to move within the ball bearing sliding steel guide rail 5. The fixed measurement arm 8 is made of a square steel pipe 19 and a reinforcing rib plate (stainless steel plate). The vertical reinforcing rib plate is placed inside the customized square steel pipe 19, and the rear end is sealed with a thickened wedge-shaped steel plate 21. The front end steel plate has upper and lower through-slots for installing the wheel track measurement wheel 10 and the concave fixed wheel 11. The two wheels are fixedly connected using a pin shaft, a nut, and a bolt 22. As shown, Figure 8As shown, the steel plate at the position of the recessed fixed wheel 11 is designed to be movable and openable, with one side being a movable end and the other side being a closed end. The movable end is connected by a movable steel hinge, and the closed end is fixedly connected by a lock. After the closed end is opened, the main reinforcement 23 is set between the wheelbase measuring wheel 10 and the recessed fixed wheel 11, which is convenient for fixed connection with the main reinforcement 23.

[0037] The sliding connecting arm 7 and the fixed measuring arm 8 are connected and secured using an arm-length telescopic adjuster 24, a sliding stopper 25, and a telescopic cable bridge 26. The arm-length telescopic adjuster 24 is a hydraulically adjustable telescopic device mounted in the middle of the thickened wedge-shaped steel plates 21 at the ends of the two arms. A sliding stopper 25 is installed in each of the four directions (up, down, left, and right) along the sliding connecting arm 7 and the fixed measuring arm 8. These stoppers are custom-made from three staggered long steel bars and primarily serve to secure, limit, and prevent deformation.

[0038] A telescopic cable bridge 26 is installed on the top surfaces of the sliding connecting arm 7 and the fixed measuring arm 8. Its primary function is to protect the data transmission cables of the wheelbase measuring wheel 10. Made of custom square steel pipes and rail-shaped steel plates, the telescopic cable bridge 26 consists of two parts and can be extended or retracted as the length of the sliding connecting arm 7 and the fixed measuring arm 8 changes.

[0039] A fastener lock hole 27 is provided on the side of the sliding connecting arm 7 to facilitate the connection of the retractable water-permeable fixed connecting plate 13 . The fastener lock hole 27 is customized with a steel plate and welded on both sides of the sliding connecting arm 7 .

[0040] like Figure 4 As shown, the retractable water-permeable fixed connecting plate 13 is arranged between two adjacent retractable supporting sliding measuring arms 6. The retractable water-permeable fixed connecting plate 13 is customized from a stainless steel plate and is composed of three parts: a fixed slide plate 14, an embedded telescopic plate 15, and a permeable steel plate. A water-permeable hole 28 is provided on the top of the steel plate to facilitate the smooth passage of mud slurry during concrete pouring and to increase the contact area between the device and the concrete surface. The fixed slide plate 14 is connected to the retractable supporting sliding measuring arm 6, and the embedded telescopic plate 15 is connected to the adjacent retractable supporting sliding measuring arm 6 after adjusting the width. The retractable water-permeable fixed connecting plate 13 can be adjusted in length according to the spacing between the sliding connecting arm 7 and the fixed measuring arm 8. Two lock buckles 29 matching the fixed measuring arm 8 are provided at each end to facilitate the connection and fixation with the fastener lock hole 27 of the fixed measuring arm 8.

[0041] like Figure 1 、 5As shown in Figures 6 and 7, the fully sealed and waterproof data processing device 30 is custom-made using a waterproof steel plate 31 and a waterproof sealing strip 32. It is installed above the hollow, permeable steel plate 2. The top steel plate is removable and connected with rust-proof bolts to facilitate subsequent maintenance and repair. The data cable 33 uses two national standard data cables: one for powering the device's data processing circuit, and the other for data transmission. One end is connected to the fully sealed and waterproof data processing device 30, and the other end is connected to the data display device 34. The data display device 34 uses an LED display, which is mainly used to connect to the data cable 33, provide power to drive the data processing circuit, and display the device's rising height, thereby achieving the purpose of real-time monitoring of overfilling height.

[0042] Example 2: A construction method using a real-time digital display control device for cast-in-place pile overfill height

[0043] like Figure 7 As shown,

[0044] S1. Before use, the cast-in-place pile reinforcement cage must be machined and at least one reinforcing stirrup 12 must be welded to the pile top. When lowering the last section of the cast-in-place pile reinforcement cage (i.e., the first section), adjust the length of the device's telescopic support sliding measuring arm 6 and telescopic permeable fixed connecting plate 13 to align with the longitudinal main reinforcement 23 of the cast-in-place pile reinforcement cage. Connect the telescopic permeable fixed connecting plate 13 to the locking catch 29 of the telescopic support sliding measuring arm 6 and tighten.

[0045] S2. Use a lifting device to lift the device by passing the steel strand through the lifting ring 16. Open the locks of the wheelbase measuring wheel 10 and the recessed fixed wheel 11 at the outer end of the telescopic supporting sliding measuring arm 6, so that each telescopic supporting sliding measuring arm 6 is at the main reinforcement 23 of the reinforcement cage. Close the locks of the recessed fixed wheel 11, fix the real-time digital display control device for the overfill height of the bored pile on the reinforcement cage, and then slowly lower it so that it lands smoothly on the position of the reinforcing stirrup 12 at the top of the pile.

[0046] S3. Debug the device to return the initial distance of the wheelbase measuring wheel 10 to zero, and check whether the cable connection is in place and whether it is loose.

[0047] S4. Lower the real-time digital display control device for the over-filling height of the bored pile to the bored pile reinforcement cage to the designed elevation, and then lower the bored pile concrete pouring conduit 18 to carry out the pouring operation. The upward thrust of the mud displacement is offset by the deadweight of the device and the design of the permeable steel plate.

[0048] S5. When the concrete is poured to the top of the pile and contacts the real-time digital display control device for the pile over-filling height, the density of the concrete is relatively large and cannot pass through the permeable steel plate, thereby evenly pushing the real-time digital display control device for the pile over-filling height to rise. Subsequently, the wheelbase measuring wheel 10 will also rotate. The rotation data of each wheelbase measuring wheel 10 is processed by the fully sealed and waterproof data processing device 30 to calculate the average value, and then displayed on the data display device 34 through the data connection cable for real-time display.

[0049] S6. The operator adjusts and stops the concrete pouring operation according to the pouring height displayed in real time on the data display device 34.

[0050] S7. After the concrete pouring operation is completed, it can be lifted out and cleaned using a crane or a real-time digital display control device for the over-pouring height of the pile.

[0051] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent replacement or change made by any technician familiar with the technical field within the technical scope disclosed by the present invention based on the technical solution and novel concept of the present invention should be covered by the scope of protection of the present invention.

Claims

1. A real-time digital display control device for overfilling height of bored piles, characterized in that include A main wheel disc fixing frame, the main wheel disc fixing frame is composed of a hollow water-permeable steel plate, a first annular steel plate, a second annular steel plate and a ball bearing sliding steel guide rail. The second annular steel plate is provided on the inner side of the hollow water-permeable steel plate, the first annular steel plate is provided on the outer side of the hollow water-permeable steel plate, and the ball bearing sliding steel guide rail is provided on the outer side of the first annular steel plate; Several telescopically supported sliding measuring arms, the telescopically supported sliding measuring arms comprising a sliding connecting arm and a fixed measuring arm, one inner end of the sliding connecting arm being provided with a guide rail fixed connecting plate, the guide rail fixed connecting plate being used to cooperate with a ball bearing sliding steel guide rail so that the telescopically supported sliding measuring arm moves along the steel guide rail, a through slot penetrating vertically near the outer end of the fixed measuring arm, a wheelbase measuring wheel and a recessed fixed wheel being provided in the through slot, the fixed measuring arm for connecting the recessed fixed wheel portion being an openable structure, the sliding connecting arm and the fixed measuring arm being connected via an arm length telescopic adjuster; Several retractable water-permeable fixed connecting plates are arranged between two adjacent retractable supporting sliding measuring arms. The retractable water-permeable fixed connecting plates are composed of a fixed slide plate and an embedded retractable plate. The fixed slide plate is connected to the retractable supporting sliding measuring arm, and the embedded retractable plate is connected to the adjacent retractable supporting sliding measuring arm after adjusting the width.

2. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that It also includes a plurality of lifting rings arranged on the second annular steel plate.

3. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that The hollow water-permeable steel plate is provided with a plurality of water-permeable holes along a circular direction.

4. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that The circular hole inside the second annular steel plate of the main wheel disc fixing frame is used for installing the cast-in-place pile concrete pouring conduit.

5. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that Steel balls are embedded in the upper and lower ends of the ball bearing sliding steel guide rail.

6. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that The sliding connecting arm is composed of a square steel tube, a reinforcing rib and a guide rail fixed connecting plate. Vertical reinforcing ribs are placed inside the square steel tube. The outer end of the square steel tube is sealed with a wedge-shaped steel plate. The inner end of the square steel tube is connected to the guide rail fixed connecting plate and reinforced with a triangular reinforcing rib to facilitate the movement of the sliding connecting arm in the ball bearing sliding steel guide rail.

7. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that The fixed measuring arm is composed of a second square steel tube and a reinforcing rib. A vertical reinforcing rib is placed inside the second square steel tube. The inner end of the second square steel tube is sealed with a wedge-shaped steel plate. The outer end of the second square steel tube is provided with a through groove with upper and lower openings for installing the wheelbase measuring wheel and the concave fixed wheel. The wheelbase measuring wheel and the concave fixed wheel are connected by a pin, a nut and a bolt. The square steel tube at the concave fixed wheel position is a movable and openable structure.

8. A real-time digital display control device for overfilling height of a bored pile according to claim 7, characterized in that One side of the openable structure is a movable end, and the other side is a closing end. The movable end is connected by a movable steel hinge, and the closing end is fixedly connected by a lock. After the closing end is opened, the main reinforcement is set between the wheelbase measuring wheel and the concave fixed wheel.

9. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that The sliding connecting arm and the fixed measuring arm are connected by an arm length telescopic adjuster, a sliding limiter, and a telescopic cable bridge. The arm length telescopic adjuster adopts a hydraulically adjustable telescopic device, which is installed at the ends of the sliding connecting arm and the fixed measuring arm and is located in the middle of the wedge-shaped steel plate. The outer end of the sliding connecting arm is provided with several sliding limiters along the circumference of the arm length telescopic adjuster.

10. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that A telescopic cable bridge is provided on the top surface of the telescopic supporting sliding measuring arm to protect the data transmission cable of the wheelbase measuring wheel. The telescopic cable bridge is a two-part telescopic structure. The telescopic cable bridge can be extended and retracted as the length of the telescopic supporting sliding measuring arm changes. A fastener lock hole is provided on the side of the telescopic supporting sliding measuring arm to connect the telescopic permeable fixed connecting plate.

11. A real-time digital display control device for overfilling height of a bored pile according to claim 10, characterized in that The fixed slide rail plate and the embedded telescopic plate of the telescopic water-permeable fixed connecting plate are both provided with a plurality of water-permeable holes, and a plurality of lock buckles matching the telescopic supporting sliding measuring arm are respectively provided at both ends of the telescopic water-permeable fixed connecting plate.

12. A real-time digital display control device for overfilling height of a bored pile according to claim 1, characterized in that Also includes A fully sealed waterproof data processing device, which consists of a waterproof steel plate and a waterproof sealing strip, is installed above a hollow permeable steel plate, and the top steel plate is detachable and connected with rust-proof bolts; A data cable, one end of which is connected to a fully sealed and waterproof data processing device, and the other end is connected to a data display device.

13. A construction method using the real-time digital display control device for overfilling height of a bored pile according to any one of claims 1 to 12, characterized in that The method is specifically as follows: S1. Before use, the cast-in-place pile reinforcement cage must be fabricated and at least one reinforcing stirrup must be welded to the pile top. When lowering the last section of the cast-in-place pile reinforcement cage, adjust the length of the telescopic support sliding measuring arm and the telescopic permeable fixed connecting plate to align with the longitudinal main reinforcement of the cast-in-place pile reinforcement cage. Connect the telescopic permeable fixed connecting plate to the telescopic support sliding measuring arm and tighten the locking mechanism. S2. Use a lifting device to hoist the device by passing the steel strands through the lifting eye. Open the locks on the wheelbase measuring wheels and the recessed fixed wheels at the outer ends of the telescopic support sliding measuring arms, ensuring that each telescopic support sliding measuring arm is positioned over the main reinforcement of the reinforcement cage. Close the locks on the recessed fixed wheels, secure the real-time digital display control device for cast-in-place pile overfill height to the reinforcement cage, and then slowly lower it until it lands smoothly on the reinforcement stirrups at the top of the pile. S3. Debug the device to reset the initial wheel distance of the wheel gauge to zero; S4. Lower the real-time digital display control device for pile overfill height to the designed elevation of the pile reinforcement cage. Then, lower the concrete guide pipe to begin pouring. The weight of the device and the permeable steel plate structure offset the upward thrust caused by the slurry displacement. S5. When the concrete is poured to the top of the pile and contacts the real-time digital display control device for the pile over-filling height, the concrete cannot penetrate the permeable steel plate, thereby evenly pushing the real-time digital display control device for the pile over-filling height upward. The wheelbase measuring wheel will also rotate accordingly. The rotation data of each wheelbase measuring wheel is processed by a fully sealed and waterproof data processing device and then displayed on the data display device through a data connection cable.

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