A foundation pit monitoring device for foundation pit construction

Abstract

This utility model discloses a foundation pit monitoring device for foundation pit construction, relating to the field of building construction technology. The device includes a vertical insertion rod with a T-slot at its top. A T-shaped collar is movably inserted into the inner wall of the T-slot. A horizontal connecting rod is fixedly connected to one end of the T-shaped collar, and a liquid level monitoring sensor is fixedly connected to the end of the horizontal connecting rod away from the T-shaped collar. This utility model achieves locking through the sliding connection between the T-shaped collar and the T-shaped positioning block, and the right-angle insertion between the vertical insertion rod and the vertical slot, both using tolerance fits. A single person can complete the assembly of the device within minutes, improving efficiency by 90% compared to traditional bolt connections, making it particularly suitable for rapid deployment in emergency monitoring scenarios.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and specifically to a foundation pit monitoring device for foundation pit construction. Background Technology

[0002] Existing equipment faces the following technical challenges in monitoring foundation pit construction:

[0003] Poor adaptability to the edge of the foundation pit: Traditional monitoring devices mostly adopt a single vertical or horizontal fixing method, which is difficult to fit the right-angle structure of the edge of the foundation pit. This results in the need to process additional adaptable parts during installation, increasing construction costs. Some devices are placed directly on the ground, which can easily cause the monitoring points to shift due to the displacement of the foundation pit slope.

[0004] Bolted connections are inefficient: Existing equipment relies on bolts to fix vertical members to the base plate. In the muddy and narrow environment around the foundation pit, bolts are easily covered by mud and sand or corroded. During assembly, the angle needs to be repeatedly calibrated, and during disassembly, the tools are inconvenient to operate, which seriously affects the construction progress.

[0005] The adjustment of monitoring components is limited: the horizontal support structure is mostly fixed, and the height and horizontal position adjustment of the monitoring sensor requires the use of a wrench to loosen the bolts, which cannot quickly respond to changes in different pit depths or monitoring ranges; and after adjustment, the position is easily shifted due to vibration, affecting the monitoring accuracy.

[0006] Insufficient wind and earthquake resistance: The lack of reinforced support structure for the complex environment of the foundation pit makes the lateral members prone to swaying when there is wind or slight displacement of the soil, which can lead to fluctuations in sensor data or even structural breakage and damage.

[0007] To address the aforementioned problems, this invention provides a monitoring device that can be quickly fixed to the edge of a foundation pit, is easy to adjust, and has strong stability through a right-angle adapter structure, a T-shaped non-rotating plug-in design, and a triangular support design, effectively solving the technical bottlenecks of traditional equipment. Utility Model Content

[0008] The purpose of this invention is to provide a foundation pit monitoring device for foundation pit construction, so as to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A foundation pit monitoring device for foundation pit construction includes a monitoring device, which includes a vertical insertion rod. A T-shaped groove is provided at the top of the vertical insertion rod. A T-shaped collar is movably inserted into the inner wall of the T-shaped groove. A horizontal connecting rod is fixedly connected to one end of the T-shaped collar. A liquid level monitoring sensor is fixedly connected to the end of the horizontal connecting rod away from the T-shaped collar.

[0011] The bottom end of the vertical insertion rod is movably connected to a fixed base plate, and a stacked fixed plate is fixedly connected to one side of the vertical insertion rod. The bottom surface of the stacked fixed plate overlaps with the upper surface of the fixed base plate. An anchor rod is provided above the stacked fixed plate, and the anchor rod moves through the stacked fixed plate and the fixed base plate sequentially from top to bottom.

[0012] A further improvement of this utility model is that a T-shaped positioning block is fixedly connected to the bottom of the inner wall of the T-shaped groove, and the outer wall of the T-shaped positioning block is movably inserted into the inner wall of the T-shaped collar.

[0013] A further improvement of this utility model is that: multiple sets of docking holes are provided at equal intervals on both the stacked fixing plate and the fixing base plate, and the inner wall of the docking hole is movably connected to the outer wall of the bottom end of the anchor rod.

[0014] A further improvement of this utility model is that a lower pressure plate is fixedly connected to the outer wall of the anchor rod near the top, and the bottom surface of the lower pressure plate abuts against the upper surface of the stacked fixing plate.

[0015] A further improvement of this utility model is that a pull ring is fixedly connected to the top end of the anchor rod.

[0016] A further improvement of this utility model is that a triangular bracket is fixedly connected to the bottom surface of the end of the horizontal connecting rod near the vertical insert rod.

[0017] A further improvement of this utility model is that a vertical slot adapted to be connected to the vertical insertion rod is provided on the upper surface of the fixed base plate near one end.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides a foundation pit monitoring device for foundation pit construction. The device features a right-angle fit: the vertical insertion rod forms a 90° angle with the fixed base plate, perfectly adapting to the vertical edge of the foundation pit. It can tightly fit the inner wall without additional supports, reducing the vibration risk caused by installation gaps. This allows the device and the foundation pit structure to form a synergistic force-bearing system, increasing the resistance to soil lateral displacement by more than 50%. Multi-point anchoring reinforcement: the anchor rod penetrates multiple sets of interlocking holes in the stacked fixed plate and the fixed base plate, forming linearly distributed ground anchoring points. Compared to single-point fixing, the pull-out resistance is increased several times, effectively resisting device displacement caused by soil settlement around the foundation pit or rainwater soaking.

[0020] 2. This utility model provides a foundation pit monitoring device for foundation pit construction, featuring a plug-in modular design: the sliding connection between the T-shaped collar and the T-shaped positioning block, and the right-angle insertion between the vertical rod and the vertical slot, all utilize tolerance matching for locking. A single person can assemble the device within minutes, improving efficiency by 90% compared to traditional bolted connections, making it particularly suitable for rapid deployment in emergency monitoring scenarios. High reusability: each component remains undamaged after disassembly, and the standardized T-shaped interface allows for reuse in different foundation pit projects. Testing shows that a single device can be reused ≥20 times, reducing equipment investment costs for monitoring projects by over 40%.

[0021] 3. This utility model provides a foundation pit monitoring device for foundation pit construction, with vertical non-rotation positioning: the T-shaped cross-section sleeve restricts the rotation of the horizontal connecting rod, allowing only height adjustment, avoiding sensor orientation deviation caused by traditional rotational connections. Combined with the triangular stable structure of the triangular bracket, the sensor maintains stable monitoring direction even under ±10° tilt vibration environment.

[0022] 4. This utility model provides a foundation pit monitoring device for foundation pit construction, which can withstand complex working conditions: the fixed base plate and the stacked fixed plate are made of high-strength steel and the surface is hot-dip galvanized, which is resistant to acid and alkali corrosion; the bottom end of the anchor rod is processed into a cone shape, which is convenient to insert into hard strata and can achieve reliable anchoring under different geological conditions such as clay and sand. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model installed on the foundation pit;

[0024] Figure 2 This is a schematic diagram of the monitoring device structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the fixed base plate structure of this utility model;

[0026] Figure 4 This is a top view schematic diagram of the vertical insertion rod structure of this utility model.

[0027] In the diagram: 1. Monitoring device; 2. Liquid level monitoring sensor; 3. Fixed base plate; 4. Vertical insertion rod; 5. Horizontal connecting rod; 6. Stacked fixing plate; 7. Anchor bolt; 8. Docking hole; 9. Vertical slot; 10. Pull ring; 11. Lower pressure plate; 12. T-slot; 13. T-positioning block; 14. T-ring; 15. Triangular bracket. Detailed Implementation

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model based on the specific circumstances.

[0029] The present invention will be further described in detail below with reference to embodiments:

[0030] Example 1

[0031] like Figure 1-4 As shown, this utility model provides a foundation pit monitoring device for foundation pit construction, including a monitoring device 1. The monitoring device 1 includes a vertical insertion rod 4. A T-shaped groove 12 is opened at the top of the vertical insertion rod 4. A T-shaped collar 14 is movably inserted into the inner wall of the T-shaped groove 12. A horizontal connecting rod 5 is fixedly connected to one end of the T-shaped collar 14. A liquid level monitoring sensor 2 is fixedly connected to the end of the horizontal connecting rod 5 away from the T-shaped collar 14.

[0032] A fixed base plate 3 is movably inserted into the bottom end of the vertical insertion rod 4. A stacked fixed plate 6 is fixedly connected to one side of the vertical insertion rod 4. The bottom surface of the stacked fixed plate 6 overlaps with the upper surface of the fixed base plate 3. An anchor rod 7 is provided above the stacked fixed plate 6. The anchor rod 7 moves through the stacked fixed plate 6 and the fixed base plate 3 from top to bottom.

[0033] A T-shaped positioning block 13 is fixedly connected to the bottom of the inner wall of the T-slot 12, and the outer wall of the T-shaped positioning block 13 is movably inserted into the inner wall of the T-shaped collar 14.

[0034] Example 2

[0035] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, multiple sets of docking holes 8 are provided on both the stacked fixing plate 6 and the fixing base plate 3, and the inner wall of the docking hole 8 is movably connected to the bottom outer wall of the anchor rod 7.

[0036] A lower pressure plate 11 is fixedly connected to the outer wall near the top of the anchor rod 7, and the bottom surface of the lower pressure plate 11 abuts against the upper surface of the stacked fixing plate 6.

[0037] A pull ring 10 is fixedly connected to the top of the anchor rod 7, and a triangular bracket 15 is fixedly connected to the bottom surface of the horizontal connecting rod 5 near the vertical insert rod 4.

[0038] The upper surface of the fixed base plate 3 near one end is provided with a vertical slot 9 that is adapted to mate with the vertical insertion rod 4.

[0039] The working principle of the foundation pit monitoring device used in the foundation pit construction will be explained in detail below.

[0040] like Figure 1-4 As shown, the core working principle of this foundation pit monitoring device revolves around the edge-fitting and fixing of the foundation pit, boltless rapid assembly, and multi-dimensional monitoring, as detailed below:

[0041] 1. Fitting the edge of the excavation pit with the foundation fixing

[0042] The fixed base plate 3 is placed on the ground outside the excavation pit. A vertical slot 9, adapted to the vertical insertion rod 4, is formed on the upper surface of the end closest to the pit. After the bottom end of the vertical insertion rod 4 is inserted into the vertical slot 9, its axis forms a 90° right angle with the fixed base plate 3, ensuring that the outer wall of the bottom end of the vertical insertion rod 4 fits tightly against the inner wall of the excavation pit (vertical), perfectly matching the right-angle structure of the pit's edge. The bottom surface of the stacked fixing plate 6 overlaps with the upper surface of the fixed base plate 3, and the two are aligned through equally spaced mating holes 8. Anchor rods 7 pass through the mating holes 8 of the stacked fixing plate 6 and the fixed base plate 3 sequentially from top to bottom. Their bottom ends are inserted into the ground soil layer, and the bottom surface of the lower pressure plate 11 abuts against the upper surface of the stacked fixing plate 6, firmly locking the fixed base plate 3 and the stacked fixing plate 6 to the ground outside the excavation pit, forming a stable support for the vertical insertion rod 4.

[0043] 2. Adjustment of T-type plug and horizontal connecting rod

[0044] A T-slot 12 is formed at the top of the vertical insertion rod 4, and a T-shaped positioning block 13 is fixedly connected to the bottom of its inner wall. A T-shaped collar 14 at one end of the horizontal connecting rod 5 is fitted onto the outer wall of the T-shaped positioning block 13. Since both the T-shaped positioning block 13 and the T-shaped collar 14 have T-shaped cross-sections, their cooperation restricts the horizontal connecting rod 5 from rotating around its axis, allowing it to slide up and down only along the vertical direction of the T-slot 12. A triangular bracket 15 is fixed to the bottom surface of the horizontal connecting rod 5 near the vertical insertion rod 4, forming a triangular support structure with the vertical insertion rod 4. This enhances the anti-overturning capability of the horizontal connecting rod 5 and ensures that the liquid level monitoring sensor 2 remains stable and does not wobble in the horizontal direction.

[0045] 3. Boltless rapid assembly and disassembly logic

[0046] Installation process: ① Place the fixed base plate 3 on the ground outside the edge of the pit, so that the vertical slot 9 faces the pit; ② Insert the bottom end of the vertical rod 4 into the vertical slot 9, and use the right angle structure to fit against the inner wall of the pit; ③ Overlap the stacked fixing plate 6 on the fixed base plate 3, align the mating holes 8 of the two, insert the anchor rod 7 and press it down through the pull ring 10, so that the pressure plate 11 abuts against the stacked fixing plate 6, and complete the ground fixing; ④ Insert the T-shaped collar 14 into the T-shaped groove 12 along the T-shaped positioning block 13, slide the horizontal connecting rod 5 to the target height, and vertical positioning can be achieved without bolts.

[0047] Disassembly process: ① Pull the pull ring 10 upward to remove the anchor rod 7, and separate the stacked fixing plate 6 from the fixing base plate 3; ② Slide the T-shaped collar 14 upward to pull the horizontal connecting rod 5 out of the T-shaped groove 12; ③ Pull out the vertical insert rod 4 to complete the disassembly of the entire component. No tools are required throughout the process.

[0048] 4. Real-time monitoring and structural coordination

[0049] The liquid level monitoring sensor 2 collects water level data in the pit in real time and transmits it to the control system via wired or wireless means. The non-rotational fitting design of the T-shaped collar 14 and T-shaped positioning block 13 on the horizontal connecting rod 5 ensures that the sensor maintains a fixed orientation during monitoring, avoiding angular deviations caused by external rotation. The right-angle fitting structure between the fixed base plate 3 and the vertical insertion rod 4 allows the device to fit tightly against the edge of the pit, reducing vibration interference caused by gaps and improving the reliability of the monitoring data.

[0050] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A foundation pit monitoring device for foundation pit construction, comprising a monitoring device (1), characterized in that: The monitoring device (1) includes a vertical insertion rod (4), a T-shaped groove (12) is provided at the top of the vertical insertion rod (4), a T-shaped collar (14) is movably inserted into the inner wall of the T-shaped groove (12), a horizontal connecting rod (5) is fixedly connected to one end of the T-shaped collar (14), and a liquid level monitoring sensor (2) is fixedly connected to the end of the horizontal connecting rod (5) away from the T-shaped collar (14); The bottom end of the vertical insertion rod (4) is movably inserted with a fixed base plate (3). A stacked fixed plate (6) is fixedly connected to one side of the vertical insertion rod (4). The bottom surface of the stacked fixed plate (6) overlaps with the upper surface of the fixed base plate (3). An anchor rod (7) is provided above the stacked fixed plate (6). The anchor rod (7) moves through the stacked fixed plate (6) and the fixed base plate (3) sequentially from top to bottom.

2. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: The bottom of the inner wall of the T-groove (12) is fixedly connected to a T-shaped positioning block (13), and the outer wall of the T-shaped positioning block (13) is movably inserted into the inner wall of the T-shaped collar (14).

3. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: The stacked fixing plate (6) and the fixing base plate (3) are provided with multiple sets of docking holes (8) distributed at equal intervals. The inner wall of the docking hole (8) is movably connected to the outer wall of the bottom end of the anchor rod (7).

4. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: The anchor rod (7) has a lower pressure plate (11) fixedly connected to its outer wall near the top, and the bottom surface of the lower pressure plate (11) abuts against the upper surface of the stacked fixing plate (6).

5. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: The top end of the anchor rod (7) is fixedly connected to a pull ring (10).

6. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: A triangular bracket (15) is fixedly connected to the bottom surface of the horizontal connecting rod (5) near the vertical insert rod (4).

7. The foundation pit monitoring device for foundation pit construction according to claim 1, characterized in that: The upper surface of the fixed base plate (3) near one end is provided with a vertical slot (9) that is adapted to mate with the vertical insertion rod (4).

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