Pile foundation concrete pouring height automatic detection equipment and detection method thereof

Abstract

The invention relates to the field of pile foundation construction, and particularly discloses pile foundation concrete pouring height automatic detection equipment and a detection method thereof.The pile foundation concrete pouring height automatic detection equipment comprises a pressure sensor, a pull rope displacement sensor and a pull rope unit, the pull rope unit comprises a pull rope body and a winder, and the pull rope body is arranged on the winder and penetrates through the pull rope displacement sensor; the pressure sensor is arranged at the bottom of the pull rope body. The pull rope unit further comprises a floating ball, the floating ball is arranged at the bottom of the pull rope body and comprises a hard component and a soft component, the hard component is annular, the soft component is in a spherical shell shape and is connected with the hard component in a sealed mode, and the pressure sensor is horizontally and fixedly arranged on the hard component. The pressure sensor is located in the middle of the floating ball. The invention aims to solve the technical problem of how to detect the actual pouring height of concrete.

Description

Technical Field

[0001] The invention relates to the field of pile foundation construction, and particularly discloses automated detection equipment for pile foundation concrete pouring height and a detection method thereof. Background Art

[0002] The following situations may occur when the pile foundation is being poured with concrete: 1. A large amount of mud will be left when the pile foundation hole is cleaned. After the concrete is poured, the mud will always be above the concrete, resulting in the actual height of the concrete being unknown and requiring frequent inspections; 2. After the pile foundation is drilled, the actual volume in the hole has a large error from the design. The main reasons are the damage to the hole wall during the drilling process and the errors in the construction, resulting in the design amount of concrete pouring not being consistent with the actual amount, generally requiring 20-30% more. This also leads to the need to frequently inspect the height of the concrete during construction.

[0003] The application number is 202320429156.6, a pile foundation concrete pouring height detection device is provided, which includes an identification probe and a monitor; the identification probe includes a probe shell, a thermal imaging sensor is arranged in the probe shell, and the thermal imaging sensor is electrically connected to the monitor through a cable; a transverse notch is arranged in the probe shell, one end of the transverse notch passes through one side wall of the probe shell, and an infrared glass is arranged at the port where the transverse notch passes through the side wall of the probe shell, the thermal imaging sensor is arranged in the transverse notch, and the image acquisition direction of the thermal imaging sensor is set toward the direction of the infrared glass; by lowering the identification probe to the specified elevation of the bored pile hole, the thermal imaging sensor collects images in real time and transmits the collected images to the monitor. As the concrete is continuously poured, when concrete temperature changes or concrete particles are found in the monitoring image displayed by the monitor, the concrete pouring is stopped, and finally the identification probe is removed as a whole to achieve the purpose of monitoring the concrete liquid level.

[0004] The above solution uses thermal imaging to determine the height of concrete, which is actually not practical because there is mud above the concrete, which will absorb the hydration heat of the concrete. The generation of hydration heat of concrete takes time, and the newly poured concrete will not undergo a large temperature change immediately, resulting in inaccurate detection.

[0005] Existing technologies generally rely on manual reading of scales to detect concrete height, resulting in inaccurate results. There are also many emerging concrete pouring height detectors on the market. For example, when calibrating and controlling concrete over-pouring, the "Guan Wuyou" sensor is typically fixed near the last hoop of the rebar cage, which poses a high risk and expensive sensor recovery. While the "Guan Wuyou mini" does not require pre-fixing the sensor to the rebar cage, like most concrete pouring height detectors on the market, it still uses manual cable pulling and manual reading of the scale data on the cable, which can lead to data recording errors or poor information transmission. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide an automated detection device for pile foundation concrete pouring height, so as to solve the technical problem of how to detect the actual concrete pouring height.

[0007] In order to achieve the above object, the present invention provides the following technical solutions: An automated detection device for pile foundation concrete pouring height includes a pressure sensor, a pull-wire displacement sensor, and a pull-wire unit. The pull-wire unit includes a pull-wire body and a winder. The pull-wire body is mounted on the winder and passes through the pull-wire displacement sensor. The pressure sensor is mounted at the bottom of the pull-wire body. The principle of detecting concrete height in this solution is that before concrete is poured into the pile foundation hole, there is a large amount of mud inside. The pressure sensor experiences different pressures in the mud than in the concrete, with the pressure in the concrete being greater. Therefore, the pressure sensor can be used to determine whether the pile is in the mud or concrete. If it is determined to be in the concrete, the winder is activated to pull the pull-wire body until the pressure sensor enters the mud. The pull-wire displacement sensor can then read the specific displacement distance of the pull-wire, which represents the pouring height of the concrete.

[0008] Optionally, the pull rope unit further includes a float, which is arranged at the bottom of the pull rope body. The float includes a hard component and a soft component, the hard component is in the shape of a hemispherical shell, the soft component is in the shape of a hemispherical shell and is sealed with the hard component, the pressure sensor is horizontally fixed in the hard component and faces the soft component, and the pressure sensor is located in the middle of the float. In this solution, the role of the float is to protect the pressure sensor and prevent the pressure sensor from being exposed and sticking to the concrete. The float in this solution includes a hard component and a soft component, wherein the hard component can increase the weight of the entire float so that it will not float in the mud, and the soft component is to enable the pressure of the concrete to be transmitted to the pressure sensor. The soft component can be replaced for easy secondary use.

[0009] Optionally, a plurality of pressure transmission sheets are fixedly mounted on the inner wall of the soft member. The pressure transmission sheets comprise a plurality of arcuate strips, which are staggered and integrally connected. Horizontal contact strips are integrally formed at the junctions of the arcuate strips, which are capable of contacting the pressure sensor. In this embodiment, the arcuate strips and contact strips are disposed within the soft member, distributed along the inner wall of the soft member. When any part of the soft member is compressed and deformed, the arcuate strips on the soft member move, driving the contact strips to apply pressure to the pressure sensor, making the entire float more sensitive to changes in pressure.

[0010] Optionally, the soft component has elastic restoring force; a connecting air tube is provided on the top of the float, and an elastic ball is provided on the top of the connecting air tube, and the connecting air tube is connected to the interior of the elastic ball. When the soft component in the float deforms, it will inevitably squeeze the air inside the float. Therefore, the air inside the float needs to be discharged through the connecting air tube in this solution to ensure that the soft component can deform.

[0011] Optionally, a spring sheet is provided on the inner wall of the rigid member, the spring sheet being in contact with the arc strip with a gap between the spring sheet and the arc strip. The spring sheet in this solution can serve as a reset component for the arc strip, and when the arc strip is subjected to a smaller external pressure, the spring sheet can push it outward.

[0012] Optionally, the communicating air pipe is a hose.

[0013] The detection method of pile foundation concrete pouring height automatic detection equipment includes the following steps: S1, place the float ball into the bottom of the pile foundation hole, while making the elastic ball outside the pile foundation hole; S2, mud pressure calibration in pile foundation hole; S3, concrete pouring begins. When the pressure sensor detects a sudden increase in pressure and an overpressure prompt is generated, a signal is transmitted to the pull rope body to automatically retract the rope. At the same time, the rope displacement sensor records the rope displacement distance until the pressure detected by the pressure sensor reaches the calibrated pressure of the mud. As the rope moves, the calibrated pressure of the mud gradually decreases according to the distance the rope moves. S4: When the displacement distance of the pull rope reaches the theoretical pile foundation length, the signal is transmitted again to reduce the concrete pouring speed until the pile foundation reaches the predetermined elevation.

[0014] The working principle and beneficial effects of this solution are: This solution leverages the different pressures within the slurry and concrete, using a pressure sensor to determine whether the pressure sensor is within the slurry or concrete. When the pressure sensor is within the concrete, the winder is activated to move the pressure sensor upward into the slurry. The displacement of the pull cord during winding is recorded to determine the concrete pour height. While related products exist in the prior art, the basic principle still relies on manual reading of the scale to determine the concrete pour height, which can still result in errors and is very cumbersome. This solution eliminates the need for manual reading and provides precise data on the concrete pour height. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 Schematic diagram of the structure of the float.

[0016] The markings in the accompanying drawings are as follows: rope displacement sensor 1, rope body 2, frame 3, motor 4, reel 5, pressure roller 6, float 7, connecting air pipe 8, elastic ball 9, hard component 10, pressure sensor 11, spring sheet 12, soft component 13, arc strip 14, contact sheet 15. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods: Example

[0018] An automated detection device for pile foundation concrete pouring height includes a pressure sensor 11, a pull rope displacement sensor 1 and a pull rope unit.

[0019] The rope pull unit includes a float 7, a rope pull body 2 and a winder. The float 7 includes a hard component 10 and a soft component 13. The hard component 10 is in the shape of a hemispherical shell and can be made of steel. The soft component 13 is in the shape of a hemispherical shell and is sealed with the hard component 10. It can be made of a polymer rubber material with elastic restoring force. The pressure sensor 11 is fixedly arranged horizontally in the hard component 10 and faces the soft component 13. The pressure sensor 11 is located in the middle of the float 7. There are many types of pressure sensors 11, and the specific model is not described here. A number of pressure transmission plates are fixedly arranged on the inner wall of the soft component 13. The pressure transmission plates include a number of arc strips 14. The arc strips 14 are staggered to form a hemispherical shape and are integrally formed and connected. The connection of the arc strips 14 is integrally formed with a horizontal contact plate 15, and the contact plate 15 can contact the pressure sensor 11. A connecting air pipe 8 is provided on the top of the float 7, which is specifically connected to the hard component 10. A hollow elastic ball 9 is mounted on the top of the air pipe 8, which is in communication with the interior of the elastic ball 9. The air pipe 8 is a flexible tube. A plurality of spring pieces 12 are fixedly mounted circumferentially on the inner wall of the rigid member 10. The spring pieces 12 can contact the curved strips 14, with gaps between them.

[0020] The drawstring body 2 is located in the drawstring displacement sensor 1 and is wound on a winder. The other end of the drawstring body 2 is detachably connected to the hard component 10 of the float 7. The drawstring displacement sensor 1 may be an MS1905 series drawstring displacement sensor 1.

[0021] The winder includes a drum 5, a motor 4, a frame 3 and a pressure roller 6. The motor 4 is fixed on the frame 3. The drum 5 is concentrically fixed on the output end of the motor 4 and its other end is rotatably set on the frame 3. The pressure roller 6 is rotatably set on the frame 3. A certain gap is left between the pressure roller 6 and the drum 5. The pressure roller 6 can press the rope body 2 to prevent it from moving.

[0022] When implementing: The detection method of the pile foundation concrete pouring height automatic detection equipment comprises the following steps: S1, place the float 7 into the bottom of the pile foundation hole, while making the elastic ball 9 outside the pile foundation hole; S2, mud pressure calibration in pile foundation hole; S3, concrete pouring begins. When the pressure sensor 11 detects a sudden increase in pressure and an overpressure prompt is generated, a signal is transmitted to the pull rope body 2 to automatically retract the rope. At the same time, the rope displacement sensor 1 records the rope displacement distance until the pressure detected by the pressure sensor 11 reaches the calibrated pressure of the mud. As the rope moves, the calibrated pressure of the mud gradually decreases according to the distance the rope moves. S4: When the displacement distance of the pull rope reaches the theoretical pile foundation length, the signal is transmitted again to reduce the concrete pouring speed until the pile foundation reaches the predetermined elevation.

[0023] In this embodiment, the soft component 13 can be connected to the hard component 10 by hot melting, so the soft component 13 can be removed and replaced when the float 7 is reused.

[0024] The above description is merely an embodiment of the present invention. Common knowledge regarding the specific structure and characteristics of the solution is not described in detail herein. It should be noted that those skilled in the art will be able to make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness and practicality of the present invention.

Claims

1. An automatic detection device for pile foundation concrete pouring height, characterized by: The invention comprises a pressure sensor, a rope displacement sensor and a rope unit. The rope unit comprises a rope body and a winder. The rope body is arranged on the winder and passes through the rope displacement sensor. The pressure sensor is arranged at the bottom of the rope body.

2. The automatic detection equipment for pile foundation concrete pouring height according to claim 1 is characterized by: The pull rope unit also includes a float, which is arranged at the bottom of the pull rope body. The float includes a hard component and a soft component. The hard component is in a hemispherical shell shape, and the soft component is in a hemispherical shell shape and is sealed and connected to the hard component. The pressure sensor is horizontally fixed in the hard component and faces the soft component, and the pressure sensor is located in the middle of the float.

3. The automatic detection equipment for pile foundation concrete pouring height according to claim 2 is characterized in that: A plurality of pressure transmission sheets are fixedly arranged on the inner wall of the soft component. The pressure transmission sheets include a plurality of arcuate strips which are staggered and connected as one piece. A horizontal contact sheet is integrally formed at the connection of the arcuate strips. The contact sheet can contact the pressure sensor.

4. The automatic detection equipment for pile foundation concrete pouring height according to claim 3 is characterized by: The soft component has elastic restoring force; a communicating air pipe is arranged on the top of the floating ball, an elastic ball is arranged on the top of the communicating air pipe, and the communicating air pipe is communicated with the inside of the elastic ball.

5. The automatic detection equipment for pile foundation concrete pouring height according to claim 4 is characterized in that: A spring sheet is arranged on the inner wall of the hard component, and the spring sheet can contact the arc strip, with a gap between the spring sheet and the arc strip.

6. The automatic detection equipment for pile foundation concrete pouring height according to claim 5 is characterized by: The communicating air pipe is a hose.

7. The detection method of pile foundation concrete pouring height automatic detection equipment according to claim 6 is characterized in that: The following steps are involved: S1, put the floating ball into the bottom of the pile foundation hole, and make the elastic ball outside the pile foundation hole; S2, mud pressure calibration in pile foundation hole; S3, concrete pouring begins. When the pressure sensor detects that the pressure increases sharply and an overpressure prompt appears, a signal is transmitted to cause the pull rope body to automatically retract the rope. At the same time, the pull rope displacement sensor records the displacement distance of the pull rope until the pressure detected by the pressure sensor reaches the calibrated pressure of the mud. When the pull rope moves, the calibrated pressure of the mud gradually decreases according to the movement distance of the pull rope. S4, when the displacement distance of the pull rope reaches the theoretical pile foundation length, the signal is transmitted again to reduce the concrete pouring speed until the pile foundation reaches the predetermined elevation.

Images