A device for monitoring the reduction of the concrete surface height of a cast-in-place pile

Abstract

The utility model discloses a kind of for bored pile concrete face height drop monitoring devices, including the support frame of being arranged in pile casing top, connecting sleeve pole and drop type liquid level meter, alarm, after the position of connecting sleeve pole is determined in vertical by the limiting clamp of support frame, temporarily clamping fixed connecting sleeve pole, without manual holding, make connecting sleeve pole be located in pile casing in horizontal direction and avoid the plane position where reinforcing cage is located, guiding probe is lowered to more suitable measurement point, avoid probe to be stuck on reinforcing cage, influence use, damage equipment, the signal transmission line of drop type liquid level meter is built-in through connecting sleeve pole, probe extends below connecting sleeve pole, drop type liquid level meter upper end is installed by mounting ring plate, and alarm is connected, by setting the signal transmission line of connecting sleeve pole protection inside, keep probe substantially vertical downward, probe is below concrete face, and it can be detected, when concrete face liquid level drops, alarm prompt is sent by alarm.

Description

Technical Field

[0001] This utility model relates to the field of cast-in-place pile concrete construction technology. More specifically, this utility model relates to a device for monitoring the drop in concrete surface height of cast-in-place piles. Background Technology

[0002] Currently, in karst development areas, the pouring of concrete for bored piles faces challenges. Small solution channels and troughs exist underground that cannot be identified through geological exploration. After pouring, the concrete flows along these channels and troughs, causing the concrete surface at the pile top to drop, thus hindering effective control of the pile foundation quality. Currently, the concrete surface elevation is primarily measured and recorded manually, a process that is lengthy and frequent. Submersible level gauges are commonly used for measuring liquid levels. They typically include a probe, signal transmission line, transmitter, and a built-in chip with an LCD display. To measure the concrete surface position, the probe is inserted into the concrete. However, the ground near the pile opening is uneven, with obvious soil and water stains, making installation inconvenient. Furthermore, the pile has a steel casing on the outside and a reinforcing cage on the inside, making it easy for the probe to get stuck. It is also difficult to control the placement and orientation of the signal transmission line, potentially damaging the level gauge. Additionally, manual observation of the liquid level measurement data is required, which is inconvenient and lacks timely and effective automatic alarm functions. Summary of the Invention

[0003] The purpose of this invention is to provide a device for monitoring the drop in concrete surface height of cast-in-place piles, so as to solve the technical problem that it is inconvenient to measure the liquid level of the concrete surface of cast-in-place piles using submersible level gauges in the prior art.

[0004] To achieve these objectives and other advantages according to the present invention, a device for monitoring the drop in concrete surface height of cast-in-place piles is provided, comprising:

[0005] The connecting sleeve rod has a mounting ring plate fixed to its top;

[0006] The submersible level gauge has its probe extending downward through the connecting sleeve to below the concrete liquid surface. The signal transmission line of the submersible level gauge is built into the inside of the connecting sleeve. The upper end of the submersible level gauge is temporarily supported and fixed by the mounting ring plate, which is used to detect concrete liquid level data in real time.

[0007] The support frame includes a base frame and an upright frame. The base frame is supported on the top of the cast-in-place pile and has a channel for pouring concrete on the inner side. The bottom of the upright frame is temporarily installed on the base frame, and the upper end of the upright frame extends horizontally toward the center of the cast-in-place pile to form a limiting clamp. The connecting sleeve is temporarily fixed vertically above the inner side of the cast-in-place pile through the limiting clamp.

[0008] Preferably, the connecting rod is a multi-segment telescopic rod structure, with the outer diameter of the multi-segment telescopic rod gradually decreasing from top to bottom, and the inner diameter of each segment being larger than the outer diameter of the signal transmission line. The top of the uppermost telescopic rod is coaxially mounted with the mounting ring plate, and the bottom of the lowermost telescopic rod is coaxially mounted with a limiting ring. The inner diameter of the limiting ring is larger than the outer diameter of the probe. Between adjacent telescopic rod segments, a locking hole is opened at the lower end of the upper telescopic rod, and an elastic ball is set radially outward at the upper end of the lower telescopic rod. Temporary relative position locking is achieved by the elastic ball engaging the locking hole.

[0009] Preferably, the base frame is formed by connecting multiple rods sequentially in the horizontal plane to form a ring structure. The rods of the base frame are set at the positions of the pile casing of the cast-in-place pile to support the top of the pile casing. A support rod is fixed at the top of the base frame. The support rod is set in the chord direction of the pile casing that does not pass through the center of the circle. The bottom of the upright frame is temporarily installed on the support rod.

[0010] Preferably, the base frame includes an outer rod and an inner rod, which are arranged alternately along the side length of a regular polygon. The length of the outer rod is greater than the length of the inner rod, and the bottom of the support pole is fixedly connected to the top of the outer rod and the inner rod.

[0011] Preferably, a limiting post is attached to the bottom of the outer rod corresponding to the outer side of the pile casing, and multiple limiting posts together limit the position of the base frame relative to the pile casing in the horizontal plane.

[0012] Preferably, the support frame includes a U-shaped sleeve, a vertical pole, and the limiting clamp. The groove of the U-shaped sleeve is oriented downwards, and the width of the groove is the same as the width of the support pole, while the depth of the groove is greater than the height of the support pole.

[0013] Preferably, it also includes an alarm, which is connected to the top of the connecting sleeve rod via the mounting ring plate. The alarm is communicatively connected to the submersible level gauge and is used to issue an alarm prompt after receiving a signal.

[0014] This utility model has at least the following beneficial effects: The device for monitoring the drop in concrete surface height of cast-in-place piles includes a support frame, a connecting sleeve, and an immersion level gauge installed on the top of the pile casing. After the position of the connecting sleeve is determined vertically by the limiting clamp of the support frame, the connecting sleeve is temporarily clamped and fixed, so that the connecting sleeve is located inside the pile casing in the horizontal direction and avoids the plane where the reinforcing cage is located. This guides the probe to a more suitable measurement point, preventing the probe from getting stuck on the reinforcing cage during measurement, which would affect its use and damage the equipment. By setting the connecting sleeve, there is no need for manual handling. The signal transmission line of the immersion level gauge is built into the connecting sleeve and passes through it, which protects the signal transmission line inside and keeps the probe basically vertically downward. The upper end of the immersion level gauge can also be installed through a mounting ring plate and connected to an alarm. The probe extends below the connecting sleeve and is submerged below the existing concrete surface for detection. When the concrete surface level drops, the alarm will sound an alarm.

[0015] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0016] Figure 1 This is the main view of the present invention.

[0017] Figure 2 This is a top view of the structure of this utility model.

[0018] Explanation of the markings on the attached drawings: 1. Connecting sleeve rod, 2. Mounting ring plate, 3. Submersible level gauge, 4. Probe, 5. Signal transmission line, 6. Base frame, 7. Stand, 8. Limiting clamp, 9. Elastic ball, 10. Support rod, 11. Outer rod, 12. Inner rod, 13. Limiting post, 14. U-shaped sleeve, 15. Stand, 16. Alarm, 20. Cast-in-place pile, 21. Concrete, 22. Pile casing, 23. Funnel. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0020] In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figure 1 , Figure 2 As shown, the device for monitoring the drop in concrete surface height of cast-in-place piles according to this utility model includes:

[0022] Connecting sleeve 1, with mounting ring plate 2 fixed to its top;

[0023] The submersible level gauge 3 has its probe 4 extending downward through the connecting sleeve rod 1 and below the concrete 21 liquid level. The signal transmission line 5 of the submersible level gauge 3 is built into the inner side of the connecting sleeve rod 1. The upper end of the submersible level gauge 3 is temporarily supported and fixed by the mounting ring plate 2, which is used to detect the concrete 21 liquid level data in real time.

[0024] The support frame includes a base frame 6 and an upright frame 7. The base frame 6 is supported on the top of the cast-in-place pile 20 and has a channel on the inside for pouring concrete 21 through the funnel 23. The bottom of the upright frame 7 is temporarily installed on the base frame 6. The upper end of the upright frame 7 extends horizontally toward the center of the cast-in-place pile 20 to form a limiting clamp 8. The connecting sleeve 1 is temporarily fixed vertically above the inner side of the cast-in-place pile 20 through the limiting clamp 8.

[0025] Because there is a reinforcing cage on the inner side of the cast-in-place pile 20 near the outer ring of the pile casing 22, a base frame 6 is first erected on top of the pile casing 22. The bottom surface of the base frame 6 is on the same horizontal plane to stably support the pile casing 22. Limiting measures can be set to keep the base frame 6 stable. A temporary support frame 7 is installed and connected to the base frame 6. The support frame 7 clamps the connecting sleeve rod 1 with a limiting clamp 8 to facilitate adjustment of the vertical position of the connecting sleeve rod 1. The limiting clamp 8 can adopt a structure similar to a clamp on a clothesline or a test tube clamp structure. The length of the limiting clamp 8 is set according to the inner dimensions of the pile casing 22 to keep the connecting sleeve rod 1 in the correct position. The probe 4 is positioned properly to avoid contact with the hopper and reinforcing cage of the concrete 21, thus ensuring a good lowering position and avoiding interference from the reinforcing cage. The connecting sleeve 1 is held by a limiting clamp 8, eliminating the need for manual handling. The signal transmission line 5 of the submersible level gauge 3 is inserted through the connecting sleeve 1, with the probe 4 extending below the connecting sleeve 1. The upper end of the submersible level gauge 3 is installed via the mounting ring plate 2 and connected to the alarm 16. The probe 4 is lowered until it is submerged below the surface of the existing concrete 21 for detection. The connecting sleeve 1 protects the inner signal transmission line 5 and keeps the probe 4 basically vertically downward.

[0026] The measurement principle of the submersible level gauge 3 can be understood from the product manual. For example, using the Linjia UC-2000-GPRS submersible level gauge 3, it can be simply understood as follows: The existing submersible level gauge 3 has a probe 4, a signal transmission line 5, a transmitter, and a built-in chip. It displays level data on an LCD screen. The signal transmission line 5 is built into the telescopic connecting sleeve 1, and its lower end connects to the probe 4. The probe 4 is located outside the lower end of the connecting sleeve 1. The probe 4 contains a pressure sensing element (diffuse silicon or ceramic capacitive sensor) that directly senses the static pressure of the concrete 21 liquid. This pressure is converted into an electrical signal through piezoresistive effect or capacitance change, outputting a standard current (4-20mA) or voltage (1-5VDC) signal. The submersible level gauge 3 has a built-in chip or connects to a PLC controller. Alarm thresholds are set in the PLC controller, and an external alarm 16 is connected to emit a light or sound alarm. The settings for the PLC controller and alarm 16 are existing technology and will not be elaborated here.

[0027] In another technical solution, such as Figure 1-2 As shown, the connecting sleeve rod 1 is a multi-segment telescopic rod structure. The outer diameter of the multi-segment telescopic rod gradually decreases from top to bottom, and the inner diameter of each segment is larger than the outer diameter of the signal transmission line 5. The top of the uppermost telescopic rod is coaxially mounted with the mounting ring plate 2, and the bottom of the lowermost telescopic rod is coaxially mounted with a limiting ring. The inner diameter of the limiting ring is larger than the outer diameter of the probe 4. A locking hole is opened at the lower end of the upper telescopic rod between adjacent segments, and an elastic ball 9 is set radially outward at the upper end of the lower telescopic rod. The temporary relative position is locked by the elastic ball 9 being inserted into the locking hole.

[0028] The telescopic rod structure of the connecting sleeve rod 1 is based on the telescopic principle of an umbrella handle, except that the diameter of the connecting sleeve rod 1 is set to be larger to allow the signal transmission line 5 to pass through, providing space for bending of the signal transmission line 5. The limiting clamp 8 can directly clamp and support the upper end of the connecting sleeve rod 1 and abut against the mounting ring plate 2. Pressing the elastic ball 9 changes the continuous sleeve rod to a telescopic state, extending the continuous sleeve rod. The elastic balls 9 of each telescopic rod segment are engaged in the locking holes of adjacent segments, temporarily fixing the extended state of the continuous sleeve rod. Then the continuous sleeve rod is installed at the limiting clamp 8. When the measurement is finished and the sleeve rod is stored, the elastic ball 9 can be pressed to retract the telescopic rod segment.

[0029] In another technical solution, such as Figure 1-2 As shown, the base frame 6 is formed by connecting multiple rods sequentially in the horizontal plane to form a ring structure. The rods of the base frame 6 are set at the positions of the pile casing 22 of the cast-in-place pile 20 to support the top of the pile casing 22. A support rod 10 is fixed at the top of the base frame 6. The support rod 10 is set in the chord direction of the pile casing 22 that does not pass through the center. The bottom of the upright frame 7 is temporarily installed on the support rod 10.

[0030] In this embodiment, the base frame 6 is a ring structure with an overall hexagonal shape, which is placed on the top of the pile casing 22. A clamp can be set downward to limit the base frame 6 in the horizontal direction to prevent slippage. The support pole 10 is fixed on the base frame 6 in advance. The upright frame 7 is installed after the base frame 6 is installed. The radial installation position of the upright frame 7 relative to the pile casing 22 can be designed and determined according to the position of the support pole 10.

[0031] In another technical solution, such as Figure 1-2 As shown, the base frame 6 includes outer rods 11 and inner rods 12. The outer rods 11 and inner rods 12 are arranged alternately along the side length of a regular polygon. The length of the outer rod 11 is greater than the length of the inner rod 12. The bottom of the support rod 10 is fixedly connected to the top of the outer rods 11 and inner rods 12. In this embodiment, the hexagonal base frame 6 includes three outer rods 11 and three inner rods 12. The support rod 10 should not be too close to or too far from the center of the pile casing 22 to avoid the continuous rod position being unfavorable for lowering the probe 4.

[0032] In another technical solution, such as Figure 1-2 As shown, a limiting post 13 is attached to the bottom of the outer rod 11 and downwards to the outer side of the pile casing 22. Multiple limiting posts 13 together limit the position of the base frame 6 relative to the pile casing 22 in the horizontal plane.

[0033] If a limiting post 13 is set vertically downward on the part of the outer rod 11 that extends beyond the inner rod 12, then when installing the base frame 6, it slides downward along the outer wall of the pile casing 22 through multiple limiting posts 13, so as to achieve rapid positioning and installation of the base frame 6, maintain the stability of the base frame 6 on the pile casing 22, and prevent it from flipping over laterally.

[0034] In another technical solution, such as Figure 1-2 As shown, the support frame 7 includes a U-shaped sleeve 14, a vertical pole 15, and a limiting clamp 8. The groove of the U-shaped sleeve 14 is set downwards, and the width of the groove is the same as the width of the support pole 10, while the depth of the groove is greater than the height of the support pole 10. The downward groove of the U-shaped sleeve 14 is relatively deep, which can stably lock onto the support pole 10 and prevent the support pole 10 from tipping over. The bottom of the U-shaped sleeve 14 is set to be horizontal to correspond to the support pole 10. Of course, holes are also opened between the two ends of the U-shaped sleeve 14, and connecting bolts and other fastening measures are tightened to ensure that the support frame 7 is stably supported on the support pole 10.

[0035] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the drawings shown and described herein.

Claims

1. A device for monitoring the drop in concrete surface height of cast-in-place piles, characterized in that, include: The connecting sleeve rod has a mounting ring plate fixed to its top; The submersible level gauge has its probe extending downward through the connecting sleeve to below the concrete liquid surface. The signal transmission line of the submersible level gauge is built into the inside of the connecting sleeve. The upper end of the submersible level gauge is temporarily supported and fixed by the mounting ring plate, which is used to detect concrete liquid level data in real time. The support frame includes a base frame and an upright frame. The base frame is supported on the top of the cast-in-place pile and has a channel for pouring concrete on the inner side. The bottom of the upright frame is temporarily installed on the base frame, and the upper end of the upright frame extends horizontally toward the center of the cast-in-place pile to form a limiting clamp. The connecting sleeve is temporarily fixed vertically above the inner side of the cast-in-place pile through the limiting clamp.

2. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 1, characterized in that, The connecting rod is a multi-segment telescopic rod structure. The outer diameter of the multi-segment telescopic rod gradually decreases from top to bottom, and the inner diameter of each segment is larger than the outer diameter of the signal transmission line. The top of the uppermost telescopic rod is coaxially mounted with the mounting ring plate, and the bottom of the lowermost telescopic rod is coaxially mounted with a limiting ring. The inner diameter of the limiting ring is larger than the outer diameter of the probe. Between adjacent telescopic rod segments, a locking hole is opened at the lower end of the upper telescopic rod, and an elastic ball is set radially outward at the upper end of the lower telescopic rod. The temporary relative position is locked by the elastic ball locking into the locking hole.

3. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 1, characterized in that, The base frame is formed by connecting multiple rods sequentially in a horizontal plane to form a ring structure. The rods of the base frame are set at the positions of the pile casing of the cast-in-place pile to support the top of the pile casing. A support rod is fixed at the top of the base frame. The support rod is set in the chord direction of the pile casing that does not pass through the center of the circle. The bottom of the upright frame is temporarily installed on the support rod.

4. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 3, characterized in that, The base frame includes an outer rod and an inner rod, which are arranged alternately along the side length of a regular polygon. The length of the outer rod is greater than the length of the inner rod. The bottom of the support pole is fixedly connected to the top of the outer rod and the inner rod.

5. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 4, characterized in that, Limiting posts are attached to the bottom of the outer rod and the outer side of the pile casing. Multiple limiting posts together limit the position of the base frame relative to the pile casing in the horizontal plane.

6. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 3, characterized in that, The support frame includes a U-shaped sleeve, a vertical pole, and the limiting clamp. The groove of the U-shaped sleeve is set downward and the width of the groove is the same as the width of the support pole, and the depth of the groove is greater than the height of the support pole.

7. The device for monitoring the drop in concrete surface height of cast-in-place piles as described in claim 1, characterized in that, It also includes an alarm, which is connected to the top of the connecting sleeve rod via the mounting ring plate. The alarm is communicatively connected to the submersible level gauge and is used to issue an alarm prompt after receiving a signal.

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