Pile foundation over-filling real-time detection equipment

Abstract

The pile foundation over-filling real-time detection equipment comprises a shooting part, a rope with scales, a roller and a display screen, the rope with the scales is wound on the roller, one end of the rope with the scales is connected with the display screen, the other end of the rope with the scales is connected with the shooting component, the roller rotates to drive the rope with the scales to descend and enable the shooting component to reach a concrete pouring interface, and an image of the concrete pouring interface can be shot; according to the utility model, the USB industrial camera is used for continuously shooting images of a concrete pouring interface and observing the thickness of laitance of a pile foundation and the density of aggregate in the shot images to judge whether the concrete of the pile foundation is over-filled in place, so that the over-filling amount of the concrete is effectively controlled, and the cost is saved on the premise of ensuring the pile forming quality of the pile foundation.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge pile foundation construction, in particular to real-time detection equipment for pile foundation overfilling. Background Art

[0002] During the construction of bored cast-in-place piles for highway bridges, in order to effectively ensure the construction quality of the pile body and prevent the pile foundation from having insufficient bearing capacity due to excessive thickness of the top slurry, it is usually necessary to perform over-pouring to a certain height. However, due to the complex construction environment and strong concealment of bored cast-in-place piles, it is difficult to control the over-pouring height during the actual pouring process, and it is very easy to have insufficient or excessive over-pouring height, which seriously reduces the quality of the pile and affects the overall bearing capacity of the pile foundation.

[0003] Detecting the state of concrete at the concrete interface is the key to determining whether the bored piles are over-pouring normally. The following methods are generally used to determine the state of concrete at the concrete interface: First, traditionally, only manual experience is used to determine whether the concrete at the concrete interface has reached the standard. The error in the judgment is large, and the pouring height cannot be accurately controlled. Second, the density of the bored pile medium is obtained by drilling holes in the bored piles to detect the state of concrete at the concrete interface and thus control the concrete pouring height. This operation is relatively complicated and will damage the pile foundation. It is also not suitable for large-sized and large-volume bored piles. Third, magnetic detection technology is used to analyze the concrete at the concrete interface to determine whether the concrete at the concrete interface has reached the standard and then control the pouring height. However, magnetic detection technology is still in the verification stage and its detection accuracy is poor.

[0004] Although there are many devices and methods for pile foundation overfilling detection, they still cannot solve the problem of too little or too much concrete overfilling in the pile foundation. Based on this, a real-time detection device for pile foundation overfilling is designed. Utility Model Content

[0005] The utility model aims to overcome the defects in the above-mentioned prior art and provides a real-time detection device for pile foundation over-pouring. The device continuously captures images of the concrete pouring interface through a USB industrial camera, and judges whether the pile foundation concrete is over-pouring by observing the thickness of the pile foundation floating slurry and the density of the aggregate in the captured images, thereby effectively controlling the amount of concrete over-pouring and saving costs while ensuring the quality of the pile foundation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a real-time detection device for pile foundation over-pouring, including a shooting component, a graduated rope, a drum and a display screen; the graduated rope is wound on the drum, one end of the graduated rope is connected to the display screen, and the other end of the graduated rope is connected to the shooting component, and the rotation of the drum drives the graduated rope to be lowered and enables the shooting component to reach the concrete pouring interface, so as to capture the image of the concrete pouring interface.

[0007] As a preferred embodiment of the present utility model, the photographing component includes a support disk, a screw rod is arranged in the middle of the support disk, a cross support frame is arranged along the axial direction of the screw rod, and a plurality of USB industrial cameras are arranged on the cross support frame.

[0008] As a preferred embodiment of the present utility model, the cross support frame includes a mounting hole, a through hole and a threaded hole. The cross support frame is fixed on the screw rod through the mounting hole, the USB industrial camera is arranged in the through hole, and a bolt passes through the threaded hole to fix the USB industrial camera in the through hole.

[0009] As a preferred embodiment of the present utility model, there are at least two USB industrial cameras, and they are symmetrically arranged left and right or front and back.

[0010] As a preferred embodiment of the present utility model, the photographing component includes a PC material pipe, a support disk is arranged inside the PC material pipe, a lead hammer head is installed at the bottom of the PC material pipe, and a cover plate is installed at the top of the PC material pipe.

[0011] As a preferred embodiment of the present utility model, a data line is arranged inside the graduated rope, one end of the data line is connected to the display screen, and the other end of the data line is connected to the USB industrial camera.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The USB industrial camera of the present utility model continuously photographs the image of the concrete pouring interface. By observing the thickness of the pile foundation floating slurry and the density of the aggregate in the photographed image, it is judged whether the pile foundation concrete is over-poured in place, and the amount of over-pouring of the concrete is accurately controlled. On the premise of ensuring the quality of the pile foundation, the cost is saved.

[0014] 2. The present utility model photographs the underwater image through the USB industrial camera. According to the image information, the quality of the pile foundation concrete is judged. The photographing component can observe the pile foundation concrete at a close distance and with high precision, reducing the possible deviations and uncontrollable factors such as data screening, threshold setting, and parameter calibration in the traditional method, and directly judging the quality of the pile foundation concrete with visual image information, with higher accuracy and simple and convenient operation.

[0015] 3. The support disk, cross support frame and cover plate in the PC material pipe of the present utility model can support the lower, middle and upper positions of the PC material pipe to resist the pressure of the moisture in the concrete or slurry in the pile foundation, and at the same time increase the density inside the PC material pipe, facilitating the sinking of the PC material pipe, so that the photographing component can be normally used in the pile foundation.

[0016] 4. The bottom of the PC material pipe of the present utility model is fixed with a lead hammer head to resist the buoyancy of concrete or mud, ensuring that the photographing component can sink smoothly.

[0017] 5. The photographing component of the present utility model adopts a PC material pipe, which has good sealing performance, durability and anti-destruction performance and is suitable for use in concrete.

[0018] 6. The present utility model can perform multi-angle and multi-faceted photographing at the same photographing point on the concrete pouring interface, avoiding detection blind spots, and accurately determining whether the concrete in the pile foundation is over-poured in place by comparing multiple photographed images.

[0019] 7. The present utility model sets different numbers of photographing points according to the size of the pile foundation diameter. The photographing component can photograph the concrete images at different positions on the same interface of the same pile foundation, and accurately determine whether the concrete in the pile foundation is over-poured in place by comparing multiple photographed images.

[0020] 8. In the case of continuous concrete pouring, the photographing measurement point of the present utility model can also be set in the range of 0 - 0.5 meters above the concrete pouring interface, and it is judged whether the concrete in the pile foundation is over-poured in place by comparing the concrete image at the concrete pouring interface with the concrete image above it.

[0021] 9. The present utility model can be applied to pile foundations of various sizes and heights, with a wider application range. Compared with traditional measurement methods, it saves materials, reduces costs, shortens the construction period, and is safe and easy to operate.

[0022] 10. In the present utility model, signals are transmitted between the USB industrial camera and the display screen through a data cable, and image transmission is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the photographing component of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the graduated rope of the present utility model;

[0026] Figure 4 is a schematic structural diagram of the USB interface of the present utility model;

[0027] Reference numerals in the drawings: 1. Photographing component, 2. Graduated rope, 3. Drum, 4. Display screen, 5. Pile foundation cover plate, 11. Lead hammer head, 12. PC material pipe, 13. USB industrial camera, 14. Cross support frame, 15. Support plate, 16. Cover plate, 17. Screw, 21. Data cable, 22. USB interface, 141. Mounting hole, 142. Through hole, 143. Threaded hole. Detailed implementation mode

[0028] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0029] As Figures 1-4 shown, a real-time detection device for overpouring of pile foundation includes a photographing component 1, a graduated rope 2, a drum 3 and a display screen 4; the graduated rope 2 is wound around the drum 3, one end of the graduated rope 2 is connected to the display screen 4, the other end of the graduated rope 2 is connected to the photographing component 1, and the rotation of the drum 3 drives the graduated rope 2 to lower and enables the photographing component 1 to reach the concrete pouring interface, and can photograph the image of the concrete pouring interface.

[0030] Specifically, the position of the concrete pouring interface is obtained by dividing the volume of concrete poured by the area of the bottom surface of the pile foundation. The graduated rope 2 on the drum 3 is lowered to enable the photographing component 1 to reach the concrete pouring interface. After the photographing component 1 reaches the concrete pouring interface, concrete is continuously poured into the pile foundation, and the photographing component 1 continuously photographs the image of the concrete pouring interface. According to the image information, it is judged whether the concrete in the pile foundation is overpoured in place, and the poured pile foundation meets the requirements by overpouring the concrete in the pile foundation in place.

[0031] The photographing component 1 of the present utility model can observe the pile foundation concrete closely and with high precision, reduce the possible deviations and uncontrollable factors such as data screening, threshold setting, parameter calibration, etc. in the traditional method, directly judge the quality of the pile foundation concrete with visual image information, with higher precision and convenient operation.

[0032] When the photographing component 1 enters the concrete pouring interface, each surface of the photographing component 1 will be subjected to the pressure of the concrete or the moisture in the slurry in the pile foundation. Therefore, it is necessary to increase the strength of each surface of the photographing component 1 to resist the pressure of the external concrete or slurry on the photographing component 1. On the other hand, the density of the photographing component 1 also needs to be increased to facilitate sinking.

[0033] The photographing component 1 includes a support plate 15, a screw rod 17 is arranged in the middle of the support plate 15, a cross support frame 14 is arranged along the axial direction of the screw rod 17, and a plurality of USB industrial cameras 13 are arranged on the cross support frame 14. The cross support frame 14 can move up and down along the axial direction of the screw rod 17, so that the USB industrial cameras 13 reach a suitable height for accurate photographing.

[0034] The cross support frame 14 includes a mounting hole 141, a through hole 142, and a threaded hole 143. The through hole 142 is vertically arranged, the threaded hole 143 is perpendicular to the through hole 142, and the threaded hole 143 penetrates from the outside of the cross support frame 14 to the through hole 142. A USB industrial camera 13 is arranged in the through hole 142, and a bolt passes through the threaded hole 143 to fix the USB industrial camera 13 in the through hole 142. The cross support frame 14 is fixed on the screw rod 17 through the mounting hole 141.

[0035] There are at least two USB industrial cameras 13, and they are symmetrically arranged left and right or front and back.

[0036] Specifically, in this embodiment, there are two USB industrial cameras 13 and they are symmetrically arranged left and right. Through the cross support frame 14, they can be fixed inside the shooting component 1 and the height can be adjusted. The two USB industrial cameras 13 are each responsible for shooting the picture on one side. By alternately using the two USB industrial cameras 13, the full cross-section shooting of the concrete pouring interface can be realized, and it can be judged whether the concrete in the pile foundation is overpoured in place according to the image information, so as to ensure that the poured pile foundation meets the requirements by the overpouring of the concrete in the pile foundation in place.

[0037] Furthermore, the number of the through holes 142, the threaded holes 143, and the USB industrial cameras 13 on the cross support frame 14 can also be adjusted according to the actual situation. At most four through holes 142 can be arranged on the cross support frame 14, and one USB industrial camera 13 can be arranged in one through hole 142 on the cross support frame 14.

[0038] The utility model uses USB industrial cameras at different positions to shoot images of the same position in the pile foundation at different angles, and it can be determined whether the concrete in the pile foundation is poured in place by comparing the images of the same position at different angles.

[0039] The shooting component 1 includes a PC material pipe 12. A support disk 15 is arranged inside the PC material pipe 12. A lead hammer head 11 is installed at the bottom of the PC material pipe 12, and a cover plate 16 is installed at the top of the PC material pipe 12.

[0040] The PC material pipe refers to a pipe made of polycarbonate, abbreviated as PC. Polycarbonate is a colorless and transparent amorphous thermoplastic material, which has high mechanical strength and heat resistance, excellent impact resistance, and has a UL94 V-0 level flame retardant property. The PC pipe has a high transparency and a light transmittance of up to 92%. The heat resistance of this material can reach 160 degrees Celsius, the cold resistance can reach minus 60 degrees Celsius, and it has good chemical corrosion resistance and dimensional stability.

[0041] The PC material pipe is adopted in the camera component 1, which has good sealing performance, durability, and anti-destruction performance and is suitable for use in concrete.

[0042] Specifically, the support plate 15, the cross support frame 14, and the cover plate 16 are respectively located at the lower, middle, and upper positions of the PC material pipe 12. The outer walls of the support plate 15 and the cover plate 16 are in contact with the inner wall of the PC material pipe 12, and the cross support frame 14 is in clearance fit with the PC material pipe 12. The support plate 15, the cross support frame 14, and the cover plate 16 increase the strength of the PC material pipe 12, so that the strength of each surface of the photographing component 1 can resist the pressure of external concrete or mud on the photographing component 1. On the other hand, the support plate 15, the cross support frame 14, and the cover plate 16 inside the PC material pipe 12 increase the internal density of the PC material pipe 12, facilitating the sinking of the photographing component 1.

[0043] Among them, the outer walls of the support plate 15 and the cover plate 16 are coated with slow-drying glue, so that the support plate 15 and the cover plate 16 are hermetically connected to the PC material pipe 12; a sealing ring is provided at the junction of the graduated rope 2 and the cover plate 16, so that the inside of the PC material pipe 12 is sealed, preventing external concrete or mud from entering the PC material pipe 12 and affecting the photographing result.

[0044] A lead hammer head 11 is fixed at the bottom of the photographing component 1 to resist the buoyancy of concrete or mud and ensure that the photographing component 1 can sink smoothly.

[0045] The data line 21 is wrapped inside the graduated rope 2. One end of the data line 21 is connected to the display screen 4, and the other end of the data line 21 is connected to the USB industrial camera 13.

[0046] Specifically, the graduated rope 2 is wound around the roller 3. By turning the roller 3 by hand, the graduated rope 2 is lowered. The surface of the graduated rope 2 is marked with scales. When lowering the photographing component 1, the lowering depth can be determined by observing the scale line, so as to reach the designated photographing position; the data line 21 is wrapped inside the rope. The upper end of the data line 21 is provided with a USB interface 22 for connecting to the display screen 4, and the lower end of the data line 21 is connected to the USB industrial camera 13 in the photographing component 1 for image photographing.

[0047] The USB industrial camera 13 and the display screen 4 of the present utility model are connected by the data line 21. The full cross-section photographing of the concrete pouring interface can be realized by photographing with two symmetric cameras, which is convenient for actual use.

[0048] The roller 3 is located on the pile foundation cover plate 5. Correspondingly, the roller 3 can move on the pile foundation cover plate 5, so that the photographing component 1 moves inside the pile foundation. Specifically, the number of placement points of the photographing component 1 inside the pile foundation is determined according to the size of the pile foundation diameter. If the pile foundation diameter is less than or equal to 2m, 4 placement points for the photographing component 1 are arranged at equal angles inside the pile foundation. If the pile foundation diameter is greater than 2m, 8 placement points for the photographing component 1 are arranged at equal angles inside the pile foundation. When the concrete images at all positions on the same interface of the pile foundation reach the over-pouring standard, the pile foundation is poured in place.

[0049] The reasonable structure inside the photographing component 1 of the present utility model and multiple photographing points make the photographed images more reasonable and accurate, and can always feedback the situation of concrete pouring inside the pile foundation, which is convenient for the over-pouring of the pile foundation to be in place.

[0050] A real-time detection method for pile foundation over-pouring includes the following steps:

[0051] Step 1: Calculate the concrete perfusion plane height by dividing the concrete pouring volume by the area of the bottom surface of the pile foundation. The top of the concrete perfusion plane is the concrete pouring interface.

[0052] Step 2: Lower the photographing component 1 to the concrete pouring interface through the calibrated rope 2. The USB industrial camera 13 in the photographing component 1 is located below the concrete pouring interface and can photograph the image of the concrete pouring interface.

[0053] Step 3: The inspector controls the USB industrial camera 13 of the photographing component 1 through the display screen 4 to obtain the images of all positions of the concrete pouring interface, so as to monitor the pouring quality of the pile foundation concrete interface.

[0054] In Step 3, the photographing component 1 is located at the concrete pouring interface, and the photographing component 1 photographs the image at the concrete pouring interface. When the floating slurry in the image photographed by the photographing component 1 meets the requirements and the aggregate is dense, it indicates that the pile foundation concrete over-pouring is in place, and the pouring of the pile foundation is stopped.

[0055] That is, the concrete perfusion plane height is calculated through the concrete pouring volume, so as to determine the concrete pouring interface, which is convenient for the photographing component 1 to be lowered to the specified position for photographing. When the concrete pouring interface is not over-poured, the top surface of the pile foundation photographed by the photographing component 1 is non-dense concrete aggregate and floating slurry. When the concrete pouring interface is over-poured in place, the top surface of the pile foundation photographed by the photographing component 1 is dense concrete aggregate and the floating slurry meets the requirements.

[0056] It further includes Step 4. Step 4 further determines that the concrete pouring interface has indeed reached the overpouring in place by taking images of the periphery of the concrete pouring interface. Step 4: Continuously monitor the pile foundation concrete. When the concrete at the concrete pouring interface meets the requirements, raise the shooting component to a position between 0 and 0.5 m above the concrete pouring interface, and preferably take pictures at several height points according to the actual situation and output them. Judge whether the pile foundation meets the specified overpouring requirements by comparing the images at different heights.

[0057] The height of the pile foundation after actual overpouring is 0.5 m - 1 m higher than the concrete pouring interface.

[0058] The USB industrial camera 13 can automatically focus. The USB industrial camera 13 can receive the electrical signal of the display screen 4 for shooting. The image taken by the camera of the USB industrial camera 13 is converted into an optical signal, and then the optical signal is converted into an electrical signal and transmitted to the display screen 4.

[0059] It includes Step 1-1: Determine the number of placement points of the shooting component 1 in the pile foundation according to the diameter of the pile foundation. If the diameter of the pile foundation is greater than 2 m, 8 placement points for the shooting component 1 are arranged at equal angles in the pile foundation; if the diameter of the pile foundation is less than or equal to 2 m, 4 placement points for the shooting component 1 are arranged at equal angles in the pile foundation.

[0060] It includes Step 1-2: Determine the height of the lead hammer head 11 in the shooting component 1 so that the shooting component 1 can be stably placed on the concrete pouring interface.

[0061] It includes Step 1-3: Determine the length dimension of the graduated rope 2 so that the shooting component 1 can reach the concrete pouring interface.

[0062] Steps 1-1, 1-2, and 1-3 are all before Step 2, so that the shooting component 1 can be stably placed on the concrete pouring interface and will not float up.

[0063] Among them, ignoring the weight of the shooting component 1, the mass of the lead hammer head 11 = f (buoyancy). In this embodiment: The density of the pile foundation concrete is set to 2.4*10 3 kg / m 3 , the density of the lead hammer head is set to 11.34*10 3 kg / m 3 , the radius of the PC material pipe is set to 0.05 m, and the total height of the PC material pipe is set to 0.125 m. Then the volume of the cylindrical part is approximately: π * 0.05 2 * 0.125 = 0.00098175 m 3 ; the volume of the lead hammer head is: π * 0.05 2 * h * (1 / 3) = 0.002618 * h m 3; The gravity of the lead hammer head = ρgv = 11.34 * 10 3 * 10 * 0.002618 * h = 296.8812 * h, f (buoyancy) = ρgv_drain = 2.4 * 10 3 * 10 * (0.00098175 + 0.002618 * h). From the equality of the gravity and buoyancy of the lead hammer head, we can solve for h = 0.10067m ≈ 0.10m = 10cm. Therefore, the height of the lead hammer head under this experimental data needs to be greater than or equal to 10cm.

[0064] The length dimension of the graduated rope 2 > the height dimension of the pile foundation cover plate - the height of the concrete pouring interface.

[0065] The pile foundation is cylindrical, and the height of the concrete pouring interface is the volume of concrete poured / π * R 2 , where R is the radius of the pile foundation. And the graduated rope 2 is lowered from the height position of the pile foundation cover plate 5. Therefore, the length dimension of the graduated rope 2 needs to be > the height dimension of the pile foundation cover plate - the volume of concrete poured / π * R 2

[0066] The utility model continuously takes pictures of the concrete pouring interface through a USB industrial camera, and judges whether the concrete in the pile foundation is overpoured in place by observing the thickness of the floating slurry and the density of the aggregate in the captured pictures, effectively controlling the amount of overpoured concrete, and saving costs on the premise of ensuring the quality of the formed pile foundation.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model; therefore, the utility model will not be limited to these embodiments shown herein, but rather will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0068] Although terms such as 1, shooting component, 2, graduated rope, 3, roller, 4, display screen, 5, pile foundation cover plate, 11, lead hammer head, 12, PC material pipe, 13, USB industrial camera, 14, cross support frame, 15, support plate, 16, cover plate, 17, screw, 21, data cable, 22, USB interface, 141, mounting hole, 142, through hole, 143, threaded hole, etc. are used more frequently in this article, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A real-time detection device for pile foundation overfilling, characterized in that: The device comprises a shooting component (1), a scaled rope (2), a drum (3) and a display screen (4); the scaled rope (2) is wound around the drum (3), one end of the scaled rope (2) is connected to the display screen (4), and the other end of the scaled rope (2) is connected to the shooting component (1); the drum (3) rotates to drive the scaled rope (2) downward and enables the shooting component (1) to reach a concrete pouring interface, so that an image of the concrete pouring interface can be captured.

2. A pile foundation overfilling real-time detection device according to claim 1, characterized in that: The photographing component (1) comprises a support plate (15), a screw rod (17) is arranged in the middle of the support plate (15), a cross support frame (14) is arranged along the axial direction of the screw rod (17), and a plurality of USB industrial cameras (13) are arranged on the cross support frame (14).

3. A pile foundation overfilling real-time detection device according to claim 2, characterized in that: The cross support frame (14) comprises a mounting hole (141), a through hole (142) and a threaded hole (143); the cross support frame (14) is fixed to the screw rod (17) via the mounting hole (141); a USB industrial camera (13) is arranged in the through hole (142); a bolt passes through the threaded hole (143) to fix the USB industrial camera (13) in the through hole (142).

4. A pile foundation overfilling real-time detection device according to claim 2, characterized in that: The number of the USB industrial cameras (13) is at least two and they are symmetrically arranged left and right or front and back.

5. The real-time detection device for pile foundation overfilling according to claim 1 is characterized by: The shooting component (1) comprises a PC material tube (12), a support plate (15) is arranged inside the PC material tube (12), a plumb bob (11) is installed at the bottom of the PC material tube (12), and a cover plate (16) is installed at the top of the PC material tube (12).

6. A real-time detection device for pile foundation overfilling according to claim 1, characterized in that: The graduated rope (2) is internally coated with a data cable (21), one end of the data cable (21) is connected to the display screen (4), and the other end of the data cable (21) is connected to a USB industrial camera (13).

Images