Sampler-based rotary excavating pile concrete pouring surface depth measuring device
By designing a sampler-based rotary pile concrete casting surface depth measurement device, the combination of direct sampling container and weight stabilization device is used to solve the problem of large errors in the existing measuring devices, achieving high accuracy and stability, simplifying construction operations and reducing costs.
Patent Information
- Application Number
- CN202421490141.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing concrete casting surface depth measurement device of rotary excavation pile is susceptible to differences in specific gravity of mud inside and outside the conduit and interference from the steel cage and hole wall, resulting in large measurement errors and complex construction operations, which increases costs.
A sampler-based concrete casting surface depth measurement device is designed, using a sampling container to directly sample, combined with a weight stabilization device and an extension device to ensure the stability and accuracy of the device during drilling.
Through direct sampling, the error introduced by indirect measurement is reduced, the accuracy and stability of measurement results are improved, construction operations are simplified, and costs are reduced.
Smart Images
Figure CN222733507U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of rotary pile construction measurement, in particular to a rotary pile concrete casting surface depth measuring device based on a sampler. [Background technology]
[0002] Rotary bored pile is a commonly used pile foundation form, and its construction process mainly includes the steps of drilling, hole cleaning, lowering steel cage, underwater concrete pouring, etc. During the underwater concrete pouring process, it is necessary to monitor the position and height of the concrete pouring surface in real time to prevent the concrete conduit from exceeding the concrete pouring surface during the lifting process, so as to control the over-pouring height. In the current construction industry, the depth measurement device of the concrete pouring surface of the rotary bored pile mainly includes sensors such as pressure gauges or liquid level gauges installed in the conduit. The depth of the concrete pouring surface is calculated according to the pressure or liquid level changes. This type of sensor is easily affected by the difference in mud density inside and outside the conduit. At the same time, it is easily affected by the interference of the steel cage and the hole wall during the removal of the conduit, resulting in unstable operation and significant measurement errors. Moreover, the conduit needs to be raised and lowered synchronously with the drilling rig, which not only increases the difficulty of construction operations, but also increases construction costs.
[0003] In addition, another mainstream depth measurement device is an ultrasonic transmitter and receiver installed on the steel cage, which calculates the depth of the concrete casting surface through the propagation speed and reflection time of sound waves in water. However, when sound waves propagate in water, they are interfered by various environmental factors such as temperature, salinity, and flow rate, making the propagation speed and reflection time unstable, which in turn affects the measurement accuracy. At the same time, sound waves are prone to multiple reflections and interference between the steel cage and the hole wall, resulting in a decrease in signal quality and affecting the reliability of the measurement results. In addition, the sound wave transmitter and receiver require additional power supply and data transmission equipment, which increases the complexity of construction and potential safety risks. [Contents of the utility model]
[0004] In order to solve the above problems, the utility model proposes a sampler-based rotary pile concrete casting surface depth measuring device which has small error, high stability and is easy to use.
[0005] The utility model is realized by the following technical solutions:
[0006] A device for measuring the depth of a concrete casting surface of a rotary-drilled pile based on a sampler comprises a sampling container for collecting concrete aggregates, the sampling container is connected to a weight stabilizing device for assisting the sampling container in drilling into the concrete aggregates, and the upper end of the weight stabilizing device is connected to an extension device for increasing the drilling depth of the sampling container.
[0007] In the device for measuring the depth of the concrete casting surface of a rotary bored pile based on a sampler as described above, the weight stabilizing device includes a first counterweight fixedly connected to the extending device, a certain number of second counterweights are evenly arranged along the outer circumference of the first counterweight, the sampling container is arranged below the first counterweight and between the second counterweights, and the sampling container is fixedly connected to each of the second counterweights, respectively.
[0008] In the above-mentioned device for measuring the depth of the concrete casting surface of a rotary-drilled pile based on a sampler, the second counterweights are symmetrically connected to both sides of the first counterweight, and a sampling port is formed between the second counterweight and the sampling container.
[0009] In the above-mentioned device for measuring the depth of the concrete casting surface of the rotary pile based on the sampler, the first counterweight and the second counterweight are metal rods with the same cross-sectional shape.
[0010] In the above-mentioned device for measuring the depth of the concrete casting surface of the rotary pile based on the sampler, the cross-sectional shapes of the first counterweight and the second counterweight are axisymmetric figures.
[0011] In the above-mentioned device for measuring the depth of concrete casting surface of rotary pile based on a sampler, the first counterweight and the second counterweight are round steel bars.
[0012] In the above-mentioned device for measuring the depth of concrete casting surface of rotary pile based on a sampler, the sampling container includes a sampling cylinder for collecting concrete aggregates, and a drill bit is provided at the bottom of the sampling cylinder to reduce the downward drilling sampling resistance of the measuring device body.
[0013] In the above-mentioned device for measuring the depth of the concrete casting surface of a rotary-drilled pile based on a sampler, the cross-sectional shape of the sampling tube is an axisymmetric figure.
[0014] In the above-mentioned device for measuring the depth of the concrete casting surface of a rotary pile based on a sampler, the sampling tube is a metal cylinder with the same axis as the first counterweight.
[0015] In the above-mentioned device for measuring the depth of the concrete casting surface of a rotary-drilled pile based on a sampler, the extension device is a nylon rope.
[0016] Compared with the prior art, the utility model has the following advantages:
[0017] 1. Direct sampling through the sampling container is simple to operate and avoids the errors that may be introduced by indirect measurement, ensuring the accuracy of the measurement results;
[0018] 2. The design of the weight stabilizer and extension device provides additional weight support and depth extension for drilling sampling, ensuring the stability and applicability of the device during the drilling process;
[0019] 3. Using common building materials such as round steel bars as counterweights not only ensures the stability of the device, but also has low acquisition costs and simple processing, making it economical and practical;
[0020] 4. Nylon rope is used as the extension device, which is easy to use and has both strength and corrosion resistance. It can resist wear and aging during long-term use, ensuring the stability and reliability of the device.
Brief Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0022] Figure 1 It is a front view of the utility model;
[0023] Figure 2 It is a top view of the utility model;
[0024] Figure 3 For the utility model Figure 1 Top view of the AA section;
[0025] Figure 4 The use state of the utility model Figure 1 ;
[0026] Figure 5 The use state of the utility model Figure 2 ;
[0027] Figure 6 The use state of the utility model Figure 3 ;
[0028] Figure 7 The use state of the utility model Figure 4 . [Specific implementation method]
[0029] Specific embodiments, such as Figures 1 to 7 A sampler-based rotary-drilling pile concrete casting surface depth measuring device is shown, comprising a sampling container 1 for collecting concrete aggregates. Compared with mainstream measuring devices in the industry, this direct sampling method is more accurate and can reduce errors caused by indirect measurement. Since concrete aggregates have a certain hardness and density, the sampling container 1 is connected to a weight stabilizing device 2 that helps it to stably drill to a predetermined depth to collect concrete aggregates. An extension device 3 for increasing the drilling depth of the sampling container 1 is fixedly connected to the upper end of the weight stabilizing device 2.
[0030] Preferably, if Figure 1 As shown, the weight stabilizing device 2 includes a first counterweight 21 fixedly connected to the extension device 3, which provides weight support for the entire device to facilitate drilling downward in concrete. The first counterweight 21 ensures the overall stability of the device during the drilling process by being fixedly connected to the extension device 3, and effectively prevents the deviation caused by external force. A certain number of second counterweights 22 are evenly connected along the outer periphery of the first counterweight 21, which further provides weight support and moves the center of gravity of the entire device downward, thereby enhancing the drilling effect of the device. These second counterweights 22 are evenly arranged along the outer periphery of the first counterweight 21 to form a stable support structure. The sampling container 1 is arranged below the first counterweight 21 and between the second counterweights 22, and is respectively welded or bolted to the second counterweights 22, so that the sampling container 1 can maintain a stable posture during the drilling process, reduce the buoyancy during the drilling sampling process, and improve the accuracy and efficiency of drilling. In general, the combination of the first counterweight 21 and the second counterweight 22 plays a role in anti-floating and stabilizing the entire measuring device during the drilling process.
[0031] Preferably, the second counterweight members 22 are symmetrically welded on both sides of the first counterweight member 21, so that the deadweight load of the device is uniform, the drilling process is smoother, and it can maintain balance when subjected to external force, reducing vibration or deviation caused by uneven force. A sampling port 4 is formed between the second counterweight member 22 and the sampling container 1. When drilling to a predetermined depth, the extension device 3 is shaken left and right to enable the sampling container 1 to collect concrete aggregate.
[0032] Preferably, the first counterweight 21 and the second counterweight 22 are metal rods with the same cross-sectional shape, and rods made of steel, copper, aluminum, etc. can be selected. In this embodiment, steel rods are selected as the first counterweight 21 and the second counterweight 22, which have high strength and hardness, can withstand various external forces during the drilling process, and are not easily deformed or damaged. At the same time, they can provide sufficient weight for the device to ensure stability during downward drilling. The first counterweight 21 and the second counterweight 22 have the same cross-sectional shape, which can make it easier to connect and fix the two, thereby improving the reliability and stability of the device.
[0033] Preferably, the cross-sectional shape of the first counterweight 21 and the second counterweight 22 is an axisymmetric figure, and the optional options are circle, square, regular hexagon, etc. In this embodiment, round steel bars are selected as the first counterweight 21 and the second counterweight 22. The round cross-sectional design of the round steel bars as counterweights makes the force more uniform, effectively reducing the stress concentration of the overall structure of the device. During the drilling process, whether it is subjected to lateral or longitudinal forces, the round steel bars can provide stable support, thereby enhancing the deformation and fracture resistance of the entire device. In addition, as a common building material, round steel bars are easy to obtain, low in cost, and easy and quick to process. Using round steel bars as counterweights not only ensures the stability of the device during the drilling process, but also helps to reduce the overall manufacturing cost and improve economic benefits.
[0034] Preferably, the sampling container 1 comprises a sampling barrel 11 for collecting concrete aggregates, and a drill bit 12 for reducing the downward drilling and sampling resistance of the measuring device body is welded at the bottom of the sampling barrel 11, so as to reduce the downward drilling and sampling resistance of the measuring device body.
[0035] Preferably, the cross-sectional shape of the sampling tube 11 is an axisymmetric figure, and optional schemes include a steel or aluminum cylinder in a circular, square, regular hexagonal shape, etc. as the sampling tube 11. In this embodiment, a steel cylinder with the same axis as the first counterweight 21 is selected as the sampling tube 11. The steel cylinder can be evenly stressed during the sampling of concrete aggregates, and at the same time, it has high strength, which can reduce its own deformation or damage caused by uneven stress. In addition, the steel cylinder also has good sealing properties, which can prevent leakage of concrete aggregates during the sampling process, reducing the possibility of erroneous judgment of measurement results due to sampling errors.
[0036] Preferably, the drill bit 12 is a metal cone whose upper end matches the cross-sectional shape of the sampling tube 11. The metal cone has excellent penetration ability. The drill bit 12 of this shape can penetrate quickly and stably when contacting concrete aggregate, reducing drilling resistance and improving the sampling efficiency of the device.
[0037] Preferably, the extension device 3 can be selected from copper rope, thin iron chain or nylon rope, etc. In this embodiment, nylon rope is selected as the extension device 3. Nylon rope has excellent strength and wear resistance, can withstand large tension and friction during the downward drilling sampling process of the device, and is not easy to break or wear, thereby ensuring the stability and reliability of the measuring device. In addition, nylon rope has good flexibility and lightness, and can be flexibly bent and stretched during use. In addition, nylon rope also has high corrosion resistance and anti-aging properties. It can resist the erosion of materials by harsh environments such as moisture, acid and alkali, which helps to ensure that the measuring device has a long service life.
[0038] Specifically, when using the measuring device to measure the depth of the concrete pouring surface of the rotary pile, Figure 4 As shown, the user holds the nylon rope and extends the sampling tube 11 into the pile hole. When the sampling tube 11 contacts the slurry 6 on the concrete surface, resistance will be obviously felt. At this time, the position where the nylon rope is flush with the top of the casing 5 is marked for the first time, and then the measuring device is recovered. The length L from the sampling tube 11 to the first marking position is measured with a tape measure, and then the tape measure is used to refer to the first marking position of the nylon rope and mark it 5 cm above the second time; then, as shown in FIG. Figure 5 to Figure 6 As shown, the measuring device is lowered into the pile hole by holding the nylon rope and drilled into the concrete until the position of the second mark on the nylon rope is flush with the top of the casing 5, and the vertical position is kept unchanged. At this time, the user holds the second marked position of the nylon rope at the top of the casing 5 and shakes it horizontally to allow the concrete to be fully collected by the sampling tube 11 through the sampling port 4. After sufficient collection, the measuring device is recovered and the collected concrete is poured out. If there is no aggregate in the collected concrete, the nylon rope is marked for the third time 5 cm upwards on the basis of the second marked position, and the measuring device is lowered and drilled as before until the third marked position of the nylon rope is flush with the top of the casing 5, and the measuring device is shaken for sampling and collection, and the above sampling and marking actions are repeated until the nylon rope is marked for the nth time and the drilling depth of the measuring device reaches as shown in FIG. Figure 7 When the concrete aggregate layer 8 is shown, aggregate appears in the collected concrete, and the concrete pouring depth of the rotary drilling pile can be measured as H=L+(n-1)×5.
[0039] Principle of this utility model:
[0040] The utility model aims to accurately measure the depth of the concrete pouring surface of the rotary pile by direct sampling. The design of the measuring device takes the density of the concrete aggregate into consideration to ensure stability and accuracy during the drilling and sampling process.
[0041] First, the sampling container 1 is the key structure of the measuring device, which is responsible for directly collecting concrete aggregates; the sampling container 1 penetrates the concrete surface through a drill bit 12 welded at the bottom to reduce resistance during drilling. The design of the sampling tube 11 adopts an axially symmetrical figure, such as a circle, to evenly disperse the force, reduce the risk of deformation, and ensure good sealing to prevent leakage during collection; in order to ensure the stability of the sampling container 1 during the drilling process, the device is equipped with a weight stabilization device 2, which includes a first counterweight 21 and two second counterweights 22, which together form a stable support structure and provide sufficient weight to increase the drilling depth. The second counterweight 22 is evenly connected along the outer periphery of the first counterweight 21 and is fixed to the sampling container 1 by welding or bolting to ensure that the sampling container remains stable during the drilling process; extension The material selection of the device 3 takes strength and wear resistance into consideration. Nylon rope is selected because of its excellent strength, flexibility and corrosion resistance, suitable for use in harsh environments, and ensures the stability and reliability of the measuring device. In actual operation, the user extends the measuring device into the pile hole along the casing 5. When the sampling tube 11 contacts the slurry 6 on the concrete surface, resistance is felt. The user makes the first mark on the nylon rope at a position flush with the top of the casing. Then, the device is recovered, and the length L from the sampling tube 11 to the first mark is measured with a tape measure, and a second mark is made 5 cm above the first mark of the nylon rope. Then, the user lowers the device to the predetermined depth again, and when the second mark position on the nylon rope is flush with the top of the casing, the vertical position is kept unchanged, and then the device is shaken horizontally so that the sampling tube collects concrete through the sampling port. This process is repeated, and a new mark is made 5 cm upward on the nylon rope each time, and sampling is performed when the new mark position is reached and flush with the top of the casing, until aggregate appears in the sampling.
[0042] By this method, the user can accurately measure the concrete pouring depth. The specific calculation method is to add the length L of the first mark to the sampling tube 11 and the cumulative additional depth of the mark times n-1 (5 cm / time), that is, to obtain the concrete pouring depth H of the rotary pile. Compared with other existing measuring devices, the measuring device using this direct sampling method not only improves the accuracy of measurement, but also reduces the errors that may be caused by indirect measurement, making the measurement work more efficient and reliable, and simple to use, economical and practical.
Claims
1. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler, characterized in that: The invention comprises a sampling container (1) for collecting concrete aggregates, wherein the sampling container (1) is connected to a weight stabilizing device (2) for assisting the sampling container in drilling into the concrete aggregates, and the upper end of the weight stabilizing device (2) is connected to an extension device (3) for increasing the drilling depth of the sampling container (1).
2. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to claim 1, characterized in that: The weight stabilizing device (2) comprises a first counterweight (21) fixedly connected to the extending device (3), a certain number of second counterweights (22) are evenly arranged along the outer circumference of the first counterweight (21), the sampling container (1) is arranged below the first counterweight (21) and between the second counterweights (22), and the sampling container (1) is fixedly connected to each of the second counterweights (22).
3. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to claim 2, characterized in that: The second counterweight pieces (22) are symmetrically connected to both sides of the first counterweight piece (21), and a sampling port (4) is formed between the second counterweight piece (22) and the sampling container (1).
4. A device for measuring the depth of concrete casting surface of rotary pile based on a sampler according to claim 3, characterized in that: The first counterweight (21) and the second counterweight (22) are metal rods having the same cross-sectional shape.
5. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to claim 4, characterized in that: The cross-sectional shapes of the first counterweight (21) and the second counterweight (22) are axisymmetric figures.
6. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to claim 5, characterized in that: The first counterweight (21) and the second counterweight (22) are round steel bars.
7. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to claim 6, characterized in that: The sampling container (1) comprises a sampling tube (11) for collecting concrete aggregates. The bottom of the sampling tube (11) is provided with a drill bit (12) for reducing the downward drilling sampling resistance of the measuring device body.
8. The device for measuring the depth of the concrete pouring surface of a rotary pile based on a sampler according to claim 7, characterized in that: The cross-sectional shape of the sampling tube (11) is an axisymmetric figure.
9. The device for measuring the depth of the concrete pouring surface of a rotary pile based on a sampler according to claim 8, characterized in that: The sampling tube (11) is a metal cylinder having the same axis as the first counterweight (21).
10. A device for measuring the depth of a concrete pouring surface of a rotary pile based on a sampler according to any one of claims 1 to 9, characterized in that: The extension device (3) is a nylon rope.