A mud level under-concrete pouring elevation control instrument
By designing a concrete pouring elevation control device below the mud slurry surface, and utilizing a density difference sensor and alarm, the problem of difficult concrete elevation control in mud-wall cast-in-place piles was solved, achieving precise pouring and cost savings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FIRST DIV GROUP CONSTR & DEV
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
AI Technical Summary
In the construction of mud-wall cast-in-place piles, it is impossible to directly measure the concrete elevation. This can lead to waste of concrete and increased adjustment costs if the concrete is poured too high, or failure to meet design requirements if the concrete is poured too low, potentially causing quality accidents.
Design a concrete pouring elevation control device below the mud slurry level. Utilize the density difference of the sensing head to make it float on top of the concrete in the mud. The sensor and alarm monitor the concrete level and prompt the operator to stop pouring.
It achieves precise control of concrete elevation, reduces waste and subsequent adjustment costs, ensures construction quality, and has promotional value.
Smart Images
Figure CN224495133U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building pouring, and specifically relates to a concrete pouring elevation control device below the mud slurry level. Background Technology
[0002] Slurry-walled cast-in-place piles are a type of pile foundation construction technique that involves drilling a hole and injecting high-density slurry (relative density > 1) into the hole to balance the pressure from the surrounding soil and water, preventing the hole wall from collapsing. The slurry level is often higher than the design elevation of the pile top, and the concrete elevation cannot be directly measured during the concrete pouring process.
[0003] Pouring too high will lead to wasted concrete and increased costs and time spent on subsequent chiseling; pouring too low will not meet design requirements and may even lead to quality accidents.
[0004] According to the investigation, there are many cases where the pile top exceeds the design height by 1-2 meters. After completion, the pile tops are uneven, which will increase the cost of later adjustments. Utility Model Content
[0005] This invention provides a concrete pouring elevation control device below the mud slurry level to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a concrete pouring elevation control device below the mud slurry level, comprising a control box, an alarm, a sensor, a measuring rope, and a sensing head. The control box is fixed above the grouting pile hole, the alarm and the sensor are fixed on the control box, the top of the measuring rope is connected to the sensor, and the bottom of the measuring rope is connected to the sensing head. The bottom of the sensing head is the elevation of the pile. The top of the grouting pile hole is mud, and the bottom of the grouting pile hole is concrete. The density of the sensing head is greater than the density of the mud slurry but less than the density of the concrete. During the concrete pouring process, the sensing head is located in the mud slurry. When the concrete is raised to the bottom of the sensing head, the sensor controls the alarm to sound an alarm to prompt the cessation of pouring.
[0007] By adopting the above technical solution, since the density of the sensing head is between that of mud and concrete, the sensing head can sink to the bottom of the mud and float on top of the concrete. Therefore, after the concrete is gradually poured, it can press against the sensing head when it reaches the specified elevation. This allows the sensor to detect the elevation and transmit a signal to the alarm, indicating that the concrete has reached the specified elevation. This enables the operator to stop pouring, ensuring that the elevation of the cast-in-place pile meets the specified range of no more than 0.8-1.0m. This saves on the cost of later adjustments and reduces concrete waste, making it worthy of widespread application.
[0008] Preferably, the sensor includes a laser diffuse reflection photoelectric sensor, a spring, a pull ring, and a pin. The laser diffuse reflection photoelectric sensor is fixed inside the control box. The spring is fixed to the bottom end of the laser diffuse reflection photoelectric sensor. The bottom end of the spring is fixedly connected to the pin. The bottom end of the pin extends out of the spring and fixes the pull ring. The top end of the pin is located on one side of the laser diffuse reflection photoelectric sensor so that the laser diffuse reflection photoelectric sensor senses the displacement of the pin. The bottom end of the pull ring is connected to the measuring rope. The laser diffuse reflection photoelectric sensor is electrically connected to the alarm.
[0009] By adopting the above technical solution, this embodiment presents one sensing method. The change in spring force drives the pin shaft to move, which is then detected by the laser diffuse reflection photoelectric sensor, achieving the purpose of monitoring and alarm. Other sensor arrays can also be used, such as directly using a pressure sensor to detect the force on the measuring rope. The designed electrical components can be powered by either a built-in power supply or an external power supply.
[0010] Preferably, the sensing head includes a lifting ring and a lifting block.
[0011] By adopting the above technical solution, it is easy to connect with the measuring rope.
[0012] Preferably, the top and bottom ends of the measuring rope are respectively fixed with spring buckles, the spring buckle at the top end is detachably connected to the pull ring, and the spring buckle at the bottom end is detachably connected to the hanging ring.
[0013] By adopting the above technical solution, installation and disassembly can be facilitated.
[0014] Preferably, the lifting block is a hollow cylinder of galvanized steel.
[0015] By adopting the above technical solution, it is relatively easy to meet the density requirements and there is more contact surface with concrete, thus reducing errors.
[0016] Preferably, the measuring rope is a steel wire rope.
[0017] By adopting the above technical solution, the materials are readily available and have good strength.
[0018] Preferably, the measuring rope is composed of multiple segments spliced together.
[0019] By adopting the above technical solution, installation and disassembly are convenient, and it can meet the needs of different sizes.
[0020] Preferably, the alarm is a buzzer.
[0021] By adopting the above technical solution, the warning effect is strong and the product is easy to use.
[0022] The beneficial effects of this invention are as follows: Since the density of the sensing head is between that of mud and concrete, the sensing head can sink to the bottom of the mud and float on the top of the concrete. Therefore, after the concrete is gradually poured, it can press against the sensing head when it reaches the specified elevation. This allows the sensor to detect the elevation and transmit a signal to the alarm, indicating that the concrete has reached the specified elevation. This enables the operator to stop pouring, ensuring that the elevation of the cast-in-place pile meets the specified range of no more than 0.8-1.0m. This saves on the cost of later adjustments and reduces concrete waste, making it worthy of widespread application.
[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of this invention may be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0025] Figure 2 This is a structural schematic diagram of the control box in an embodiment of the present utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the sensor head in an embodiment of this utility model;
[0027] Figure 4 This is a circuit diagram of an embodiment of the present invention.
[0028] Attached reference numerals: 1. Control box; 2. Alarm; 3. Sensor; 31. Laser diffuse reflection photoelectric sensor; 32. Spring; 33. Pull ring; 34. Pin; 4. Measuring rope; 5. Sensor head; 51. Hanging ring; 52. Hanging block; 6. Mud; 7. Concrete; 8. Spring buckle. Detailed Implementation
[0029] The technical solution of this utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.
[0030] Combination Figure 1-4A concrete pouring elevation control device below the mud slurry level includes a control box 1. The control box 1 has an alarm 2, a sensor 3, a measuring rope 4, and a sensing head 5. The control box 1 is fixed above the grouting pile hole. The alarm 2 and the sensor 3 are fixed on the control box 1. The top of the measuring rope 4 is connected to the sensor 3, and the bottom of the measuring rope 4 is connected to the sensing head 5. The bottom of the sensing head 5 is the elevation of the pile. The top of the grouting pile hole is mud 6, and the bottom of the grouting pile hole is concrete 7. The density of the sensing head 5 is greater than the density of the mud 6 but less than the density of the concrete 7. During the pouring of concrete 7, the sensing head 5 is located in the mud 6. When the concrete 7 is raised to the bottom of the sensing head 5, the sensor 3 controls the alarm 2 to sound an alarm to indicate that the pouring should be stopped.
[0031] Because the density of the sensing head 5 is between that of the mud 6 and the concrete 7, the sensing head 5 can sink to the bottom of the mud 6 and float on top of the concrete 7. Therefore, after the concrete 7 is gradually poured, once the concrete 7 reaches the specified elevation, it can press against the sensing head 5, which is then detected by the sensor 3 and can transmit a signal to the alarm 2, indicating that the concrete 7 has reached the specified elevation. This allows the operator to control and stop the pouring, ensuring that the elevation of the cast-in-place pile meets the specified range of no more than 0.8-1.0m. This saves on the cost of later adjustments and reduces the waste of concrete 7, making it worthy of promotion.
[0032] Sensor 3 includes a laser diffuse reflection photoelectric sensor 31, a spring 32, a pull ring 33, and a pin 34. The laser diffuse reflection photoelectric sensor 31 is fixed inside the control box 1. The spring 32 is fixed to the bottom end of the laser diffuse reflection photoelectric sensor 31. The bottom end of the spring 32 is fixedly connected to the pin 34. The bottom end of the pin 34 extends out of the spring 32 and fixes the pull ring 33. The top end of the pin 34 is located on one side of the laser diffuse reflection photoelectric sensor 31, so that the laser diffuse reflection photoelectric sensor 31 senses the displacement of the pin 34. The bottom end of the pull ring 33 is connected to the measuring rope 4. The laser diffuse reflection photoelectric sensor 31 is electrically connected to the alarm 2.
[0033] This embodiment presents one sensing method described above. The change in force on the spring 32 causes the pin 34 to move, which is then detected by the laser diffuse reflection photoelectric sensor 31, achieving the purpose of monitoring and alarm. Other sensor arrays can also be used, such as directly using a pressure sensor to detect the force on the measuring rope 4. The electrical components can be powered by either a built-in power supply or an external power supply.
[0034] The sensor head 5 includes a hanging ring 51 and a hanging block 52, which can be easily connected to the measuring rope 4. The top and bottom ends of the measuring rope 4 are respectively fixed with spring buckles 8. The spring buckle 8 at the top end is detachably connected to the pull ring 33, and the spring buckle 8 at the bottom end is detachably connected to the hanging ring 51, which can be easily installed and removed.
[0035] The lifting block 52 is a hollow cylinder of galvanized steel, which easily meets density requirements and has a large contact surface with the concrete 7, reducing errors. The measuring rope 4 is a steel wire rope, which is readily available and has good strength. The measuring rope 4 is composed of multiple spliced sections, which facilitates installation and disassembly and can meet the needs of different sizes. The alarm 2 is a buzzer, which has a strong warning effect and is easy to use.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A concrete pouring elevation control instrument below the mud slurry level, characterized in that: Includes a control box (1), which has an alarm (2), a sensor (3), a measuring rope (4), and a sensing head (5). The control box (1) is fixed above the grouting pile hole. The alarm (2) and the sensor (3) are fixed on the control box (1). The top of the measuring rope (4) is connected to the sensor (3), and the bottom of the measuring rope (4) is connected to the sensing head (5). The bottom of the sensing head (5) is the elevation of the pile. The top of the grouting pile hole is mud (6), and the bottom of the grouting pile hole is concrete (7). The density of the sensing head (5) is greater than that of the mud (6) but less than that of the concrete (7). During the concrete pouring process (7), the sensing head (5) is located in the mud (6). When the concrete (7) is lifted to the bottom of the sensing head (5), the sensor (3) controls the alarm (2) to alarm and prompt to stop pouring.
2. The concrete pouring elevation control instrument below the mud slurry level according to claim 1, characterized in that: The sensor (3) includes a laser diffuse reflection photoelectric sensor (31), a spring (32), a pull ring (33), and a pin (34). The laser diffuse reflection photoelectric sensor (31) is fixed inside the control box (1). The spring (32) is fixed to the bottom end of the laser diffuse reflection photoelectric sensor (31). The bottom end of the spring (32) is fixedly connected to the pin (34). The bottom end of the pin (34) extends out of the spring (32) and fixes the pull ring (33). The top end of the pin (34) is located on one side of the laser diffuse reflection photoelectric sensor (31) so that the laser diffuse reflection photoelectric sensor (31) senses the displacement of the pin (34). The bottom end of the pull ring (33) is connected to the measuring rope (4). The laser diffuse reflection photoelectric sensor (31) is electrically connected to the alarm (2).
3. The concrete pouring elevation control instrument below the mud slurry level according to claim 2, characterized in that: The sensor head (5) includes a lifting ring (51) and a lifting block (52).
4. The concrete pouring elevation control instrument below the mud slurry level according to claim 3, characterized in that: The measuring rope (4) is fixed with spring buckles (8) at the top and bottom respectively. The spring buckle (8) at the top is detachably connected to the pull ring (33), and the spring buckle (8) at the bottom is detachably connected to the hanging ring (51).
5. The concrete pouring elevation control instrument below the mud slurry level according to claim 4, characterized in that: The lifting block (52) is a hollow cylinder made of galvanized steel.
6. The concrete pouring elevation control instrument below the mud slurry level according to claim 5, characterized in that: The measuring rope (4) is a steel wire rope.
7. The concrete pouring elevation control instrument below the mud slurry level according to claim 6, characterized in that: The measuring rope (4) is composed of multiple sections spliced together.
8. The concrete pouring elevation control instrument below the mud slurry level according to claim 7, characterized in that: The alarm (2) is a buzzer.