Cast-in-situ bored pile concrete pouring elevation monitoring device
By using a monitoring device that combines a guide ruler and sonar sensors with a gravity sensor in the construction of bored piles, the problem of controlling the final concrete pouring elevation was solved, achieving precise control of the pouring height and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCFEB CIVIL ENG
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-12
AI Technical Summary
现有技术在钻孔灌注桩施工中，混凝土终灌标高难以控制，尤其在桩顶位于孔内较深时，测量不准确且操作复杂，容易出现超灌或灌注不足的问题。
A device for monitoring the concrete pouring elevation of bored piles is adopted, including a workbench, cantilever, cable retraction mechanism, guide ruler, sonar sensor and gravity sensor. The cable retraction mechanism controls the lowering position of the monitoring head, and the position is confirmed by the guide ruler and the reader. The sonar sensor and gravity sensor are used to monitor the concrete pouring height to ensure the accuracy of the elevation.
It effectively monitors and controls the concrete pouring height, avoids over-pouring, ensures the accuracy of pouring speed and quantity, adapts to different construction conditions, and improves the precision of elevation control and ease of operation.
Smart Images
Figure CN224230892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pile elevation monitoring technology, and in particular to a device for monitoring the concrete pouring elevation of bored piles. Background Technology
[0002] In the field of bored pile engineering, bored piles are widely used due to their wide applicability and low construction noise. Concrete pouring is a key step in the construction process, typically using a guide pipe to pour concrete sequentially from the bottom of the hole upwards. Depending on the design function and actual site conditions—such as pile foundation construction before excavation or the need to construct a platform beforehand due to site constraints—the top elevation of the bored pile is often located deep within the hole, making it difficult to control the final concrete pouring elevation. Current technologies mainly utilize measuring ropes for measurement control, which is affected by the timeliness of measurement, has a high degree of randomness, and is prone to over-pouring or under-pouring. Other techniques use rods fixed to the casing and a lower tray for measurement; however, this technique is limited in application when the pile top is deep within the hole, is cumbersome to operate, and carries a significant risk of inaccurate control due to casing displacement during concrete pouring. Finally, a floating rod technique is used for control, but it is greatly affected by sediment or the mixture of concrete and mud, resulting in significant measurement deviations. Utility Model Content
[0003] This invention provides a device for monitoring the concrete pouring elevation of bored piles, which solves the problem of difficulty in controlling the final concrete pouring elevation.
[0004] This utility model provides a device for monitoring the concrete pouring elevation of bored piles, including a workbench. The lower end of the workbench is provided with multiple height-adjustable support legs. A cantilever and a cable retraction mechanism are fixed on the workbench. A guide ruler on the cable retraction mechanism passes through the cantilever and is fixed to a monitoring head. A sonar sensor is provided on the monitoring head. A gravity sensor is provided on the cantilever. A first pulley is provided on the gravity sensor. The guide ruler is hung on the first pulley. A reader for reading the scale value of the guide ruler is also provided on the cantilever. One end of the sliding contact ring of the cable retraction mechanism is connected to the sonar sensor through the guide ruler, and the other end is connected to a control terminal fixed on the workbench.
[0005] Preferably, the cable winding mechanism includes a motor and a winding reel, the wire ruler is wound on the winding reel, the sliding contact ring is disposed on the winding reel, and the motor drives the winding reel to rotate.
[0006] Preferably, the guide ruler includes a flexible ruler with a guide wire fixed on it, and the guide wire is connected to a sliding contact ring.
[0007] Preferably, the cantilever has an L-shaped structure, and a second pulley is rotatably provided inside the cantilever. The wire scale on the winding reel is fixed to the monitoring head via the second pulley and the first pulley.
[0008] Preferably, the workbench is equipped with a level, and the level is connected to the workbench via a ball joint.
[0009] Preferably, the workbench is also equipped with a mobile power supply, which provides power to the control terminal, gravity sensor, sonar sensor and reader.
[0010] Preferably, a protective cover is fixed on the workbench, and the control terminal and mobile power supply are located inside the protective cover.
[0011] Preferably, the monitoring head is a conical disk, the sonar sensor is located at the bottom of the conical disk, and the wire of the guide scale passes through the wire hole of the conical disk and is connected to the sonar sensor.
[0012] Preferably, a hexagonal prism is rotatably mounted on the upper end of the cantilever.
[0013] Preferably, the support leg includes a telescopic rod, the upper end of which is hinged to the bottom of the workbench. The telescopic rod is equipped with a locking screw, and its lower end is pointed. Compared with existing technologies, this invention uses a cable retraction mechanism to retract the monitoring head, uses a guide ruler and a reader to confirm the lowering position of the monitoring head, and uses a sonar sensor and a gravity sensor to ensure that the concrete pouring elevation of the cast-in-place pile meets design requirements. This design effectively ensures the pouring speed in the early stages of pouring and effectively controls the pouring volume in the later stages, thereby effectively monitoring the concrete pouring height and avoiding excessive over-pouring. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is an enlarged schematic diagram of the control terminal of this utility model;
[0017] Figure 3 This is an enlarged schematic diagram of the cable winding and unwinding mechanism of this utility model;
[0018] Figure 4This is an enlarged schematic diagram of the first pulley of this utility model;
[0019] Figure 5 This is an enlarged schematic diagram of the monitoring head of this utility model.
[0020] Figure label:
[0021] 1. Workbench, 2. Support leg, 3. Cantilever, 4. Cable winding mechanism, 5. Wire ruler, 6. Monitoring head, 7. Sonar sensor, 8. Gravity sensor, 9. First pulley, 01. Reader, 02. Control terminal, 03. Level, 04. Power supply, 05. Protective cover, 07. Hexagonal prism, 41. Sliding contact ring, 42. Motor, 43. Winding reel, 51. Wire ruler, 52. Wire, 61. Wire hole. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] See attached document Figure 1This embodiment provides a device for monitoring the concrete pouring elevation of bored piles, including a workbench 1. The lower end of the workbench 1 has multiple height-adjustable support legs 2. A cantilever 3 and a cable retraction mechanism 4 are fixed on the workbench 1. A guide ruler 5 on the cable retraction mechanism 4 passes through the cantilever 3 and is fixed to a monitoring head 6. The monitoring head 6 is equipped with a sonar sensor 7. A gravity sensor 8 is equipped on the cantilever 3, and a first rotatable pulley 9 is mounted on the gravity sensor 8. The guide ruler 5 is hung on the first pulley 9. The cantilever 3 also has a reader 01 for reading the scale value of the guide ruler 5. The guide ruler 5 passes through a slot in the reader 01. The reader 01 can accurately identify the scale value on the guide ruler 5 and transmit this value to a control terminal 02. One end of the sliding contact ring 41 of the cable retraction mechanism 4 is connected to the sonar sensor 7 via the guide ruler 5, and the other end is connected to the control terminal 02 fixed on the workbench 1. In this invention, the cable retraction mechanism 4 lowers the monitoring head 6 into the borehole. The lowering height of the monitoring head 6 is controlled by the cooperation of the reader 01 and the guide ruler 5, ensuring the monitoring head 6 stops at the set elevation. Concrete is poured into the borehole, and the sonar sensor 7 monitors the distance between the lower concrete and the monitoring head 6. The closer the distance, the slower the pouring speed, effectively controlling the pouring volume. When the gravity value detected by the gravity sensor 8 is less than or equal to the preset gravity value, it indicates that the poured concrete has reached the monitoring head 6, and the concrete pouring of the cast-in-place pile is stopped. This invention uses the cable retraction mechanism 4 to retract the monitoring head 6, the guide ruler 5 and the reader 01 to confirm the lowering position of the monitoring head 6, and the sonar sensor 7 and the gravity sensor 8 to ensure that the concrete pouring elevation of the cast-in-place pile meets the design requirements. This design effectively ensures the pouring speed in the early stages of pouring and effectively controls the pouring volume in the later stages, thereby effectively monitoring the concrete pouring height and avoiding excessive over-pouring. For example, in actual construction, there are requirements for the height of over-irrigation, which is generally 500mm higher than the design height. The monitoring device of this utility model can effectively control the amount of over-irrigation and avoid excessive over-irrigation.
[0024] When pouring concrete, if the gravity value detected by gravity sensor 8 is less than or equal to the preset gravity value, it means that the poured concrete has reached the position of monitoring head 6.
[0025] It should be noted that the "preset gravity value" is set based on the gravity value detected by the gravity sensor 8 after the monitoring head 6 is lowered into place. The preset gravity value is obtained by reducing the gravity value detected by the gravity sensor 8 after the monitoring head 8 is lowered into place by 30%. This effectively avoids the influence of different mud densities or lowering heights of the monitoring head 6, as well as the weight of the guide ruler 5 itself, on the monitoring results.
[0026] It should also be noted that this monitoring device is equally applicable to dry-drilled cast-in-place piles, and without the influence of mud, the monitoring results are more accurate.
[0027] As another embodiment of this utility model: refer to the appendix Figure 3 The cable reel mechanism 4 includes a motor 42 and a winding reel 43. The wire ruler 5 is wound on the winding reel 43. The sliding contact ring 41 is set on the winding reel 43. A sliding contact piece is installed on the cantilever 3. One end of the sliding contact piece contacts the sliding contact ring 41, and the other end is connected to the control terminal 02 through a cable. The motor 42 drives the winding reel 43 to rotate, thereby retrieving or releasing the wire ruler 5, and then controlling the lifting and lowering of the monitoring head 6.
[0028] As another embodiment of this utility model: refer to the appendix Figure 4 The guide ruler 5 includes a flexible ruler 51 with scale values set on it. A guide wire 52 is fixed on the flexible ruler 51 and connected to the sliding contact ring 41.
[0029] As another embodiment of this utility model: the cantilever 3 has an L-shaped structure, and a second pulley is rotatably provided inside the cantilever 3. The second pulley is located at the right angle of the cantilever 3, and a third pulley is rotatably provided at the lower end of the cantilever 3 to introduce the wire ruler 5 on the winding reel 43 into the cantilever 3. The wire ruler 5 on the winding reel 43 is fixed to the monitoring head 6 through the third pulley, the second pulley, and the first pulley 9.
[0030] In another embodiment of this utility model: a level 03 is provided on the workbench 1, and the level 03 is connected to the workbench 1 by a ball joint. After the monitoring device is installed in place, the level 03 is rotated so that the bubble is located within the circle of the level 03. During construction, the position of the bubble in the level 03 is used to determine whether the monitoring device has moved or tilted.
[0031] As another embodiment of this utility model: refer to the appendix Figure 2 The workbench 1 is also equipped with a mobile power supply 04, which provides power to the control terminal 02, gravity sensor 8, sonar sensor 7 and reader 01.
[0032] As another embodiment of this utility model: a protective cover 05 is fixed on the workbench 1, and the control terminal 02 and the mobile power supply 04 are located inside the protective cover 05.
[0033] As another embodiment of this utility model: refer to the appendix Figure 5 The monitoring head 6 is a conical disc, with its cross-section gradually increasing from top to bottom. The sonar sensor 7 is located at the bottom of the conical disc, and the wire 52 of the guide ruler 5 passes through the wire hole 61 of the conical disc and connects to the sonar sensor 7. The sonar sensor 7 is used to monitor the elevation changes during the concrete pouring process of the bored pile in real time. Based on these elevation changes, the concrete pouring speed is controlled. When the concrete surface is about to reach the designed pile top elevation, the concrete pouring speed is reduced to ensure the accuracy of the pile top elevation control.
[0034] The monitoring head 6 is only subject to buoyancy in the mud. When the monitoring head 6 comes into contact with the concrete surface, it is effectively lifted because the lower surface of the monitoring head 6 has a large force-bearing area, and the gravity value detected by the gravity sensor 8 will change.
[0035] As another embodiment of this utility model: refer to the appendix Figure 4 The upper end of the cantilever 3 is equipped with a hexagonal prism 07, which can rotate 360° in the horizontal plane, allowing the surveyor to measure the elevation of the monitoring device from all unobstructed directions.
[0036] In another embodiment of this utility model: the support leg 2 includes a telescopic rod, the upper end of which is hinged to the bottom of the workbench 1. A locking nut is threaded onto the hinge shaft between the telescopic rod and the workbench 1. A locking screw is provided on the telescopic rod. After adjusting the height of the workbench 1, the telescopic rod is locked by the locking screw. The lower end of the telescopic rod is pointed for easy insertion into the soil.
[0037] As another embodiment of this utility model: the cantilever 3 is disposed between the protective cover 05 and the cable winding mechanism 4.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A device for monitoring the concrete pouring elevation of bored piles, characterized in that, The device includes a workbench with multiple height-adjustable legs at its lower end. A cantilever and a cable retraction mechanism are fixed on the workbench. A wire ruler on the cable retraction mechanism passes through the cantilever and is fixed to a monitoring head. A sonar sensor is mounted on the monitoring head. A gravity sensor is mounted on the cantilever, and a first pulley is mounted on the gravity sensor. The wire ruler is hung on the first pulley. A reader for reading the scale value of the wire ruler is also mounted on the cantilever. One end of the sliding contact ring of the cable retraction mechanism is connected to the sonar sensor through the wire ruler, and the other end is connected to a control terminal fixed on the workbench.
2. The drilling pile concrete pouring elevation monitoring device according to claim 1, characterized in that, The cable winding mechanism includes a motor and a winding reel. The wire ruler is wound on the winding reel, and the sliding contact ring is disposed on the winding reel. The motor drives the winding reel to rotate.
3. The drilling pile concrete pouring elevation monitoring device according to claim 2, characterized in that, The guide ruler includes a flexible ruler with a guide wire fixed on it, and the guide wire is connected to a sliding contact ring.
4. The drilling pile concrete pouring elevation monitoring device according to claim 3, characterized in that, The cantilever has an L-shaped structure, and a second pulley is rotatably installed inside the cantilever. The wire scale on the winding reel is fixed to the monitoring head via the second pulley and the first pulley.
5. The drilling pile concrete pouring elevation monitoring device according to claim 1, characterized in that, The workbench is equipped with a level, which is connected to the workbench via a ball joint.
6. The drilling pile concrete pouring elevation monitoring device according to claim 1, characterized in that, The workbench is also equipped with a mobile power supply, which provides power to the control terminal, gravity sensor, sonar sensor and reader.
7. The drilling pile concrete pouring elevation monitoring device according to claim 6, characterized in that, A protective cover is fixed on the workbench, and the control terminal and mobile power supply are located inside the protective cover.
8. The drilling pile concrete pouring elevation monitoring device according to claim 3, characterized in that, The monitoring head is a conical disc, the sonar sensor is located at the bottom of the conical disc, and the wire of the guide scale passes through the wire hole of the conical disc and is connected to the sonar sensor.
9. The drilling pile concrete pouring elevation monitoring device according to claim 1, characterized in that, A hexagonal prism is rotatably mounted on the upper end of the cantilever.
10. The drilling pile concrete pouring elevation monitoring device according to claim 1, characterized in that, The outrigger includes a telescopic rod, the upper end of which is hinged to the bottom of the workbench. The telescopic rod is equipped with a locking screw, and the lower end of the telescopic rod is pointed.