Foundation pile hole depth detection device and use method thereof

Abstract

The invention discloses a foundation pile hole depth detection device and a use method thereof. The device comprises a main body and a detection mechanism, the main body comprises a winding roller, a winding motor and a supporting assembly; the detection mechanism comprises a detection frame, a length measuring rope, a structural frame, an arc edge frame, a counterweight opening, a detection probe, an adjusting assembly and a protection assembly; scales are marked on the length measuring rope; the two ends of the winding roller are connected with the supporting assembly, and one end is connected with the output end of the winding motor. One end of the length measuring rope is wound on the winding roller, and the other end is connected with the detection frame; the structural frame is located at two ends of the detection frame; two ends of the adjusting component are respectively connected with the structural frame and the arc-edge frame; the top end of the counterweight port is connected with the bottom end of the detection frame and the detection probe; the protection assembly is installed on the arc edge frame. The arc edge frame is made to adapt to different pile hole diameters through the adjusting assembly, the detection probe is located in the center of the pile hole all the time through cooperation of the arc edge frame and the balancing weight, wind power and shaking interference are effectively resisted, and the accuracy and reliability of measurement are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of pile hole construction technology, specifically to a foundation pile hole depth detection device and its usage method. Background Technology

[0002] Reinforced concrete cast-in-place piles are widely used in housing construction, large public buildings, and hydraulic engineering projects due to their high bearing capacity and good pull-out resistance. Cast-in-place piles are constructed by creating a hole in the foundation soil on-site using methods such as mechanical drilling, steel pipe extrusion, or manual excavation. A reinforcing cage is then placed inside the hole, and concrete is poured in to form the pile. Based on different drilling techniques, cast-in-place piles can be mainly classified into driven cast-in-place piles, drilled cast-in-place piles, and excavated cast-in-place piles. Accurate measurement of the pile hole depth is a crucial step in ensuring the quality of pile construction, directly affecting the pile's bearing capacity and structural safety. Therefore, specialized measuring equipment is required for precise and reliable detection of the pile hole depth during construction. Commonly used methods for detecting pile hole depth include the rope method, sensor detection method, and laser ranging method. Among them, the rope measuring method is widely used in practical engineering due to its simple operation and low cost. However, it also has some obvious defects in actual use, such as the rope being easily contaminated with mud, being stretched and deformed, and the readings not being intuitive. In particular, the accuracy and reliability will be greatly affected in deep holes or complex geological conditions.

[0003] Patent document CN222438743U discloses a foundation pile hole depth detection device, which includes: a frame; a measuring component, the measuring component including a measuring rope; and a cleaning component, the cleaning component including a water tank, guide bends, and a cleaning trough. The water tank is located below the rope take-up roller and connected to the frame. The guide bends and the cleaning trough are both located inside the water tank. Two guide bends are provided, each connected to one of the two opposite side walls of the water tank. The cleaning trough is inverted U-shaped and located between the two guide bends. A screw and a guide rod are provided at the top of the cleaning trough, and brush bristles are provided inside the cleaning trough. The screw is fitted through the top of the water tank. By setting up the cleaning trough and rotating the screw, the cleaning trough covers the measuring rope between the two guide bends. At this time, the measuring rope is located in the groove of the cleaning trough. When the measuring rope moves, the brush bristles in the cleaning trough can scrape off the mud on the measuring rope, thereby cleaning the mud on the measuring rope and further reducing subsequent cleaning work.

[0004] Although the device reduces subsequent cleaning work by cleaning the mud on the measuring rope through the cleaning tank, when the probe is used for detection, the swaying of the rope itself during the operation of laying the line will affect the stability of the probe because the probe itself relies solely on the counterweight to maintain its bottom stability. At the same time, the wind force of the external environment will also affect the probe's detection stability. Summary of the Invention

[0005] The purpose of this invention is to provide a foundation pile hole depth detection device that can improve the stability and adaptability of the detection probe and effectively protect the detection probe, so as to solve the technical problems of poor stability of the detection probe due to rope swaying and the influence of external wind force during line laying, easy collision or jamming of the measuring rope with the hole wall, and insufficient accuracy and reliability of the rope measuring method under complex geological conditions.

[0006] To solve the above technical problems, the present invention adopts the following solution: A foundation pile hole depth detection device includes a main body and a detection mechanism. The main body includes a winding roller, a winding motor, and a support assembly. The detection mechanism includes a detection frame, a measuring rope, a structural frame, an arc-edge frame, a counterweight port, a detection probe, an adjustment assembly, and a protective assembly. The measuring rope is marked with graduations. Two support assemblies are provided, respectively installed at both ends of the winding roller, and one end of the winding roller passes through the triangular frame and is fixedly connected to the output end of the winding motor. One end of the measuring rope is wound around the winding roller, and the other end is fixedly connected to the detection frame. Two structural frames are provided, symmetrically installed at both ends of the detection frame. One end of the adjustment assembly is connected to the structural frame, and the other end is connected to the arc-edge frame. The top end of the counterweight port is fixedly connected to the bottom end of the detection frame, and the top end is fixedly connected to the detection probe. The protective assembly is installed on the arc-edge frame. When the measuring rope is not in use, it is wound around the take-up roller, with only a portion connected to the detection frame. The take-up roller is supported by a support assembly. The motor of the detection probe is controlled by an external control system. The detection probe uses either an ultrasonic sensor or an infrared photoelectric sensor. It emits ultrasonic or infrared beams towards the bottom of the pile hole, receives the returned echoes, and calculates the time difference between transmission and reception to calculate the remaining distance of the probe from the bottom in real time.

[0007] In use, the arc-edge frame is adjusted using the adjustment device on the structural frame to fit the diameter of the pile hole. Combined with the counterweight at the bottom of the detection frame, the detection probe is kept centered, ensuring that the detection frame remains in the center of the pile hole during the lowering and detection process. When the motor rotates forward, it drives the winding roller to rotate forward, releasing the measuring rope. The detection frame and detection probe at the end of the rope sink freely and vertically into the pile hole under the action of gravity. The detection probe at the bottom of the detection frame performs the detection, and the detected data is transmitted to the external control system for display. The arc-edge frame and protective components protect the detection frame and probe from violent collisions or jamming with the hole wall, ensuring that the probe can reach the bottom of the hole vertically and smoothly. If the detection probe is damaged, the depth of the pile hole can also be determined by directly reading the scale.

[0008] Furthermore, the support assembly includes a triangular frame and a soft rubber pad; both ends of the take-up roller are rotatably connected to the triangular frame, and one end passes through the triangular frame and is fixedly connected to the output end of the take-up motor; the soft rubber pad is fixedly installed at the bottom end of the triangular frame; the lower ends of the two triangular frames are connected to both ends of the base plate frame, and an opening matching the measuring rope is provided in the middle.

[0009] Two triangular frames are connected by a base plate to form a base, and the geometric stability of the triangular frames provides stable support for the winding roller. The soft rubber pad at the bottom increases the friction between the device and the ground, further ensuring the stability of the device. The elasticity of the soft rubber pad can also compensate for uneven ground to a certain extent, making the device easier to place stably. The measuring rope passes through the opening in the middle of the base plate and connects to the testing frame. When using this device, it is necessary to adjust the opening in the middle of the base plate to be roughly aligned with the center of the pile hole to ensure that the measuring rope is lowered vertically at the center of the pile hole.

[0010] Furthermore, the adjustment assembly includes a fixing bolt, a telescopic rod, and a limiting groove; the limiting groove is formed inside the structural frame; one end of the telescopic rod is slidably connected to the structural frame through the limiting groove, and the other end is fixedly connected to the arc-shaped frame; the telescopic rod has several adjustment holes; the fixing bolt matches the adjustment holes and extends into the interior of the structural frame.

[0011] The telescopic rod is confined within the limiting groove inside the structural frame. The telescopic rod can slide back and forth within the groove, but it cannot detach or rotate. When adjusting the position of the arc-shaped frame, remove the fixing bolts screwed into the adjustment holes, allowing the telescopic rod to slide along the limiting groove inside the structural frame. This makes the diameter formed by the arc-shaped frames on both sides slightly smaller than the diameter of the pile hole. After adjusting the position, pass the fixing bolts through the structural frame wall and screw them into the corresponding adjustment holes on the telescopic rod, thus firmly locking the telescopic rod in the current position.

[0012] Furthermore, the protective assembly includes a contact wheel and a rubber tire; several contact wheels are provided and evenly distributed inside the arc-edge frame; the rubber tire is fitted onto the outside of the contact wheels. When the testing frame is placed into the pile hole for testing, when the contact wheel with the rubber tire on the arc-edge frame contacts the hole wall, the contact wheel rolls along the inside of the pile hole, reducing the friction between the arc-edge frame and the pile hole, making the lowering process smoother and less strenuous. At the same time, the rubber tire can effectively buffer the impact of protruding stones or steel bars encountered by the testing mechanism during the lowering process, and can also reduce vibration, protect the equipment structure, and provide a more stable working environment for the probe.

[0013] Another object of the present invention is to provide a method for using a foundation pile hole depth detection device, the specific steps of which are as follows: a. Preliminary measurement of the diameter of the foundation pile hole, removal of the fixing bolt screwed into the adjustment hole, allowing the telescopic rod to slide along the limit groove line within the structural frame, so that the diameter formed by the two arc-shaped frames is slightly smaller than the diameter of the pile hole. After adjustment, pass the fixing bolt through the structural frame wall and screw it into the corresponding adjustment hole on the telescopic rod, thereby firmly locking the telescopic rod in the current position and adapting the arc-shaped frame to the diameter of the pile hole. b. Place the triangular frame of the support component on both sides of the pile hole, and adjust the opening in the middle of the base plate frame to roughly align with the center of the pile hole so that the detection frame remains in the center of the pile hole during the lowering and detection process. c. Start the motor. The motor rotates forward, driving the take-up roller to rotate in the same direction, releasing the measuring rope. The detection frame and detection probe at the end of the rope sink freely and vertically into the pile hole under the action of gravity. The detection probe at the bottom of the detection frame performs the detection and transmits the detected data to an external control system for display. d. If the detection probe is found to be damaged during operation step c, the depth of the pile hole can also be determined by directly reading the scale on the measuring rope.

[0014] The beneficial effects of this invention are as follows: 1. This invention controls the stable release of the measuring rope through a winding motor and support components. The adjustment component allows the arc-edge frame to adapt to different pile hole diameters. Through the cooperation of the arc-edge frame and the counterweight, the detection probe can always be located vertically at the center of the pile hole during the lowering process, effectively resisting wind and sway interference. The protective components prevent the probe from colliding and getting stuck with the hole wall, ensuring a smooth and reliable detection process. The measuring rope has a built-in scale, so the depth can still be measured manually even if the probe is damaged, providing double protection. The overall structure significantly improves the accuracy, reliability, and environmental adaptability of the measurement.

[0015] 2. This invention uses a triangular frame and base plate to form a stable base, combined with soft rubber pads to enhance friction and adapt to uneven ground, ensuring the overall stability of the equipment; the adjustment component uses limit grooves and fixing bolts to achieve precise and rapid adjustment and locking of the arc-shaped frame, effectively adapting to different apertures; the protective component uses rubber-coated wheels to significantly reduce the resistance of lowering and buffer collisions, providing a stable and protected detection environment for the probe, and comprehensively improving measurement efficiency and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the detection mechanism structure of the present invention; Figure 3 This is a schematic diagram of the telescopic rod structure of the present invention; Figure 4 This is a schematic diagram of the detection frame structure of the present invention.

[0017] In the diagram: 1. Main body; 101. Triangular frame; 102. Base plate frame; 103. Soft rubber pad; 104. Take-up roller; 105. Take-up motor; 2. Detection mechanism; 201. Detection frame; 202. Length measuring rope; 203. Structural frame; 204. Fixing bolt; 205. Telescopic rod; 206. Limiting groove; 207. Adjustment hole; 208. Arc edge frame; 209. Bonding wheel; 210. Rubber tire; 211. Counterweight; 212. Detection probe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] The following is a detailed description of the foundation pile hole depth detection device and its usage method according to the present invention, with reference to the accompanying drawings: Example

[0021] A foundation pile hole depth detection device includes a main body 1 and a detection mechanism 2. The main body 1 includes a winding roller 104, a winding motor 105, and a support assembly. The detection mechanism 2 includes a detection frame 201, a measuring rope 202, a structural frame 203, an arc-edge frame 208, a counterweight port 211, a detection probe 212, an adjustment assembly, and a protective assembly. The measuring rope 202 is marked with graduations. Two support assemblies are provided, respectively installed at both ends of the winding roller 104, and one end of the winding roller 104 passes through the triangular frame 101 and is fixedly connected to the output end of the winding motor 105. One upper end of the measuring rope 202 is wound around the winding roller 104, and the other end is fixedly connected to the detection frame 201. Two structural frames 203 are provided, symmetrically installed on the detection frame 201. The frame 201 has two ends; one end of the adjustment component is connected to the structural frame 203, and the other end is connected to the arc-edge frame 208; the top end of the counterweight port 211 is fixedly connected to the bottom end of the detection frame 201, and the top end is fixedly connected to the detection probe 212; the protective component is installed on the arc-edge frame 208; the support component includes a triangular frame 101 and a soft rubber pad 103; the two ends of the take-up roller 104 are rotatably connected to the triangular frame 101, and one end passes through the triangular frame 101 and is fixedly connected to the output end of the take-up motor 105; the soft rubber pad 103 is fixedly installed at the bottom end of the triangular frame 101; the lower ends of the two triangular frames 101 are connected to the two ends of the base plate frame 102, and an opening matching the measuring rope 202 is provided in the middle.

[0022] The method of using the foundation pile hole depth detection device described in Embodiment 1 is as follows: a. Preliminary measurement of the diameter of the foundation pile holes, and adjustment of the arc-edge frame 208 using the adjustment device on the structural frame 203; b. Place the triangular frame 101 of the support component on both sides of the pile hole, and adjust the opening in the middle of the base plate frame 102 to be roughly aligned with the center of the pile hole so that the detection frame 201 is always located in the center of the pile hole during the lowering detection process. c. Start the winding motor 105. The winding motor 105 rotates forward, driving the winding roller 104 to rotate forward, releasing the measuring rope 202. The detection frame 201 and detection probe 212 at the end of the measuring rope 202 sink freely and vertically into the pile hole under the action of gravity, and are detected by the detection probe 212 at the bottom of the detection frame 201. d. When the detection probe 212 is found to be damaged in step c, the depth of the pile hole is determined by directly reading the scale on the measuring rope 202. After the detection is completed, the winding motor 105 can be controlled to rotate in the opposite direction to retract the measuring rope 202, thereby moving the detection frame 201 upward and removing it from the pile hole. Example

[0023] The difference from Embodiment 1 is that the adjustment assembly includes a fixing bolt 204, a telescopic rod 205, and a limiting groove 206; the limiting groove 206 is formed inside the structural frame 203; one end of the telescopic rod 205 is slidably connected to the structural frame 203 through the limiting groove 206, and the other end is fixedly connected to the arc-edge frame 208; the telescopic rod 205 has a plurality of adjustment holes 207; the fixing bolt 204 matches the adjustment holes 207 and extends into the interior of the structural frame 203; the protective assembly includes a contact wheel 209 and a rubber tire 210; a plurality of contact wheels 209 are provided and are evenly distributed inside the arc-edge frame 208; the rubber tire 210 is sleeved on the outside of the contact wheel 209.

[0024] The method of using the foundation pile hole depth detection device described in this embodiment is as follows: a. Preliminary measurement of the diameter of the foundation pile hole, removal of the fixing bolt 204 screwed into the adjustment hole 207, allowing the telescopic rod 205 to slide along the limiting groove line 206 within the structural frame 203, so that the diameter formed by the two side arc frames 208 is slightly smaller than the diameter of the pile hole, and then insertion of the fixing bolt 204 into the adjustment hole 207 to limit the telescopic rod 205. b. Place the triangular frame 101 of the support component on both sides of the pile hole, and adjust the opening in the middle of the base plate frame 102 to be roughly aligned with the center of the pile hole so that the detection frame 201 is always located in the center of the pile hole during the lowering detection process. c. Start the winding motor 105. The winding motor 105 rotates forward, driving the winding roller 104 to rotate forward, releasing the measuring rope 202. The detection frame 201 and detection probe 212 at the end of the measuring rope 202 sink freely and vertically into the pile hole under the action of gravity, and are detected by the detection probe 212 at the bottom of the detection frame 201. When the detection frame 201 is placed into the pile hole for detection, when the rubber tire 210 on the arc edge frame 208 contacts the hole wall, the rubber tire 210 on the arc edge frame 208 rolls along the inside of the pile hole. d. When the detection probe 212 is found to be damaged in step c, the depth of the pile hole is determined by directly reading the scale on the measuring rope 202.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundation pile hole depth detection device, characterized in that: It includes a main body (1) and a detection mechanism (2); the main body (1) includes a winding roller (104), a winding motor (105) and a support assembly; the detection mechanism (2) includes a detection frame (201), a measuring rope (202), a structural frame (203), an arc edge frame (208), a counterweight port (211), a detection probe (212), an adjustment assembly and a protective assembly; the measuring rope (202) is marked with graduations; Two support components are provided, respectively installed at both ends of the take-up roller (104), and one end of the take-up roller (104) passes through the triangular frame (101) and is fixedly connected to the output end of the take-up motor (105); one end of the measuring rope (202) is wound around the take-up roller (104), and the other end is fixedly connected to the detection frame (201); two structural frames (203) are provided, symmetrically installed at both ends of the detection frame (201); one end of the adjustment component is connected to the structural frame (203), and the other end is connected to the arc edge frame (208); the top end of the counterweight port (211) is fixedly connected to the bottom end of the detection frame (201), and the top end is fixedly connected to the detection probe (212); the protective component is installed on the arc edge frame (208).

2. The foundation pile hole depth detection device according to claim 1, characterized in that: The support assembly includes a triangular frame (101) and a soft rubber pad (103); the two ends of the take-up roller (104) are rotatably connected to the triangular frame (101), and one end passes through the triangular frame (101) and is fixedly connected to the output end of the take-up motor (105); the soft rubber pad (103) is fixedly installed at the bottom end of the triangular frame (101); the lower ends of the two triangular frames (101) are connected to the two ends of the base plate frame (102), and an opening matching the measuring rope (202) is provided in the middle.

3. The foundation pile hole depth detection device according to claim 1, characterized in that: The adjustment assembly includes a fixing bolt (204), a telescopic rod (205), and a limiting groove (206); the limiting groove (206) is formed inside the structural frame (203); one end of the telescopic rod (205) is slidably connected to the structural frame (203) through the limiting groove (206), and the other end is fixedly connected to the arc-edge frame (208); the telescopic rod (205) has a plurality of adjustment holes (207); the fixing bolt (204) matches the adjustment holes (207) and extends into the interior of the structural frame (203).

4. The foundation pile hole depth detection device according to claim 1, characterized in that: The protective assembly includes a bonding wheel (209) and a rubber tire (210); there are several bonding wheels (209) evenly distributed inside the arc edge frame (208); the rubber tire (210) is fitted onto the outside of the bonding wheel (209).

5. The method of using the foundation pile hole depth detection device according to claims 1-4, characterized in that: Includes the following steps: a. Preliminary measurement of the diameter of the foundation pile hole, removal of the fixing bolt (204) screwed into the adjustment hole (207), allowing the telescopic rod (205) to slide along the limiting groove line (206) in the structural frame (203), so that the diameter formed by the two side arc frames (208) is slightly smaller than the diameter of the pile hole, and then insert the fixing bolt (204) into the adjustment hole (207) to limit the telescopic rod (205); b. Place the triangular frame (101) of the support component on both sides of the pile hole, and adjust the opening in the middle of the base plate frame (102) to be roughly aligned with the center of the pile hole so that the detection frame (201) is always located in the center of the pile hole during the lowering detection process. c. Start the winding motor (105). The winding motor (105) rotates forward, driving the winding roller (104) to rotate in the forward direction. Release the measuring rope (202). The detection frame (201) and detection probe (212) at the end of the measuring rope (202) sink freely and vertically into the pile hole under the action of gravity, and are detected by the detection probe (212) at the bottom of the detection frame (201). d. When the detection probe (212) is found to be damaged in step c, the depth of the pile hole is determined by directly reading the scale on the measuring rope (202).

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