A displacement monitoring assembly for a deep foundation pit support structure

Abstract

The utility model provides a kind of deviation monitoring assembly of deep foundation pit supporting structure, belongs to the technical field of foundation pit supporting deviation monitoring, including two supporting column connecting pieces, self-adapting bearing mechanism and wireless low-power tiltmeter, the wireless low-power tiltmeter is fixedly installed on the upper surface of self-adapting bearing mechanism, four-way deflection mechanism is fixedly installed on the opposite face of two supporting column connecting pieces, and the four-way deflection mechanism and self-adapting bearing mechanism between can be detachably installed with adaptive rod, the utility model can utilize one monitoring equipment to detect two supporting columns simultaneously, can effectively reduce the cost in construction process, simultaneously, by the cooperation of slide and slide groove of self-adapting bearing mechanism's slide bar and the cooperation of spring and external block, it can be telescopic to change the installation length of certain distance, so that it can be installed between different spacing supporting columns Adjustment, improve installation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit support offset monitoring technology, specifically relating to an offset monitoring component for deep foundation pit support structures. Background Technology

[0002] In deep foundation pit engineering, the stability of the support structure is directly related to construction safety, and the monitoring of the horizontal displacement of the support columns is an important indicator for assessing structural safety.

[0003] Currently, commonly used inclinometers, displacement sensors, and other monitoring components mostly employ single-point fixed installation. In practice, monitoring points need to be individually installed on the capping beam or sidewall of each support column. This discrete installation method has significant drawbacks:

[0004] Firstly, due to the structural design of the sensor itself, the existing monitoring components are difficult to effectively span across adjacent support columns to achieve span installation, which requires each support column to be equipped with an independent monitoring unit, resulting in a significant increase in equipment procurement and installation costs.

[0005] Secondly, existing monitoring components lack adaptive adjustment capabilities when the spacing between support columns is non-standardized, often requiring repeated adjustments to customized installation brackets, which further reduces construction efficiency.

[0006] To address this issue, a displacement monitoring component for deep foundation pit support structures is provided. Utility Model Content

[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an offset monitoring component for deep foundation pit support structures, which solves the problem that the existing offset monitoring components for foundation pit support structures are not convenient for spanning adjacent support columns to achieve span-type installation, resulting in high construction costs.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An offset monitoring component for a deep foundation pit support structure includes two support column connectors, an adaptive bearing mechanism, and a wireless low-power inclinometer. The wireless low-power inclinometer is fixedly installed on the upper surface of the adaptive bearing mechanism. A four-way deflection mechanism is fixedly installed on the opposite surfaces of the two support column connectors. An adapter rod can be detachably installed between the four-way deflection mechanism and the adaptive bearing mechanism.

[0010] In the above technical solution, the support column connector includes a fixing plate. Two mounting holes are symmetrically opened through the outer surface of the fixing plate. A U-shaped steel sleeve is inserted between the two mounting holes. Both ends of the U-shaped steel sleeve are provided with external threads. Nuts A are screwed onto the outer surface of the external threads.

[0011] In the above technical solution, the adaptive bearing mechanism includes a carrier plate. Two sliding grooves are symmetrically and through the left surface of the carrier plate. Two sliding rods are slidably installed in each sliding groove. An external block is fixedly installed between the outer ends of the front and rear sliding rods. Two springs are fixedly installed between the external block and the carrier plate. The springs are sleeved on the outer side of the corresponding sliding rod.

[0012] In the above technical solution, the outer surface of the external block is provided with a through opening, the opposite ends of the two adapter rods are respectively passed through the corresponding through opening, and the opposite ends of the two adapter rods are screwed with two nuts B, which are located on the left and right sides of the corresponding external block respectively.

[0013] In the above technical solution, the four-way deflection mechanism includes an adapter seat, which is fixedly installed on the side surface of the corresponding fixed plate. A T-shaped hinge block is rotatably installed inside the adapter seat. Two lugs are fixedly installed on the side of the T-shaped hinge block away from the adapter seat. A T-shaped connecting block is rotatably installed between the two lugs. A threaded hole is opened on the side of the T-shaped connecting block away from the lugs. The end of the adapter rod away from the outer connecting block is screwed into the threaded hole.

[0014] In the above technical solution, inner rotor bearings are embedded and fixedly installed on the upper and lower surfaces of the adapter and the outer surface of the ear block. A rotating shaft is installed between the two corresponding inner rotor bearings. A keyway is opened on the outer surface of the rotating shaft. The upper left end of the T-shaped hinge block and the front surface of the T-shaped connecting block are both provided with a connecting hole with a fitting key. The rotating shaft is inserted into the corresponding connecting hole, and the fitting key is inserted into the corresponding keyway.

[0015] The offset monitoring component for deep foundation pit support structure of this utility model has the following advantages compared with the prior art:

[0016] This invention can be used by connecting and installing two support columns. When one support column sinks or shifts to the left or right, the four-way deflection mechanism at the corresponding position uses an adapter rod to drive the adaptive bearing mechanism and the wireless low-power inclinometer above it to shift, thereby triggering an offset signal. Compared with the prior art, it can use a single monitoring device to simultaneously detect two support columns, which can effectively reduce the cost during construction. At the same time, through the cooperation of the sliding rod and the sliding groove of the adaptive bearing mechanism, as well as the cooperation of the spring and the external block, the installation length can be extended and adjusted by a certain distance, allowing it to be installed and adjusted between support columns with different spacing, thus improving installation efficiency. Attached Figure Description

[0017] Figure 1 This is a top view of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the support column connector structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the carrier plate of this utility model.

[0020] Figure 4 This is an exploded structural diagram of the support column connector of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of this utility model in use.

[0022] Figures 1-5 In, among which:

[0023] 1. Support column connector; 11. Fixing plate; 111. Mounting hole; 12. U-shaped steel sleeve; 121. External thread; 13. Nut A; 2. Adaptive bearing mechanism; 21. Carrier plate; 211. Slide groove; 22. Slide rod; 23. External block; 231. Through port; 24. Spring; 3. Wireless low-power inclinometer; 4. Four-way deflection mechanism; 41. Adapter seat; 42. T-shaped hinge block; 43. Ear block; 44. T-shaped connecting block; 441. Threaded hole; 5. Adapter rod; 51. Nut B; 6. Inner rotor bearing; 61. Rotating shaft; 611. Keyway; 7. Adapter hole; 71. Fitting key. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-5 This utility model provides a technical solution:

[0026] A displacement monitoring component for a deep foundation pit support structure includes two support column connectors 1, an adaptive bearing mechanism 2, and a wireless low-power inclinometer 3. The wireless low-power inclinometer 3 is horizontally fixed on the adaptive bearing mechanism 2. A four-way deflection mechanism 4 is fixedly installed on the opposite surfaces of the two support column connectors 1. The four-way deflection mechanism 4 can adapt to the displacement movement of the support column in four directions: front, back, up, and down. An adapter rod 5 can be detachably installed between the four-way deflection mechanism 4 and the adaptive bearing mechanism 2. When the support column is displaced, the four-way deflection mechanism 4 drives the adaptive bearing mechanism 2 to make a corresponding displacement through the adapter rod 5, thereby triggering the wireless low-power inclinometer 3 above to perform monitoring.

[0027] The JG-WXQJ type wireless low-power inclinometer 3 establishes a connection with the outside world through an integrated Bluetooth 5.0 / BLE or LoRa communication module. Its built-in directional antenna broadcasts the collected tilt signals to the outside world in a specific frequency band (such as 2.4GHz / 868MHz). In deep foundation pit scenarios, multiple inclinometers are networked in a star topology. Each node periodically sends encrypted data packets containing device ID, timestamp, and three-axis tilt angle data to the central gateway. The gateway uploads the aggregated data to the cloud monitoring platform via RS485 or 4G / NB-IoT links. The acquisition of tilt signals relies on internal high-precision MEMS accelerometers and gyroscopes. When the support structure deforms, the sensors detect the spatial change of the gravity vector and transmit it to the main control MCU via the SPI interface for Kalman filtering and temperature compensation, ultimately generating tilt angle data frames with an accuracy of ±0.1°. To reduce power consumption, the device adopts an event-driven mechanism, activating the wireless module only when the tilt angle change exceeds a preset threshold (e.g., 0.5°) or when a timer is triggered, and maintaining a deep sleep mode (power consumption ≤5μA) during other times, thereby achieving continuous monitoring for ≥3 years powered by a single button battery.

[0028] Combination Figure 1 , Figure 2 and Figure 4 As shown, the support column connector 1 includes a rigid fixing plate 11. Two mounting holes 111 are symmetrically opened through the outer surface of the fixing plate 11. A U-shaped steel sleeve 12 is inserted between the two mounting holes 111. Both ends of the U-shaped steel sleeve 12 are provided with external threads 121. Nuts A13 are screwed onto the outer surface of the external threads 121.

[0029] When installing the support column connector 1 with the support column, attach the fixing plate 11 to the outer surface of the support column, pass the U-shaped steel sleeve 12 through the two mounting holes 111 and fasten it to the outer surface of the support column, and then use the nut A13 to tighten the U-shaped steel sleeve 12 to the outer surface of the support column to complete the installation.

[0030] Combination Figure 1 and Figure 3 As shown, the adaptive bearing mechanism 2 includes a carrier plate 21, which is a rectangular parallelepiped made of rigid material. Two sliding grooves 211 are symmetrically opened through the left surface of the carrier plate 21. Two sliding rods 22 are slidably installed in each sliding groove 211. An external block 23 is fixedly installed between the outer ends of two adjacent sliding rods 22. An opening 231 is opened through the outer surface of the external block 23. An adapter rod 5 is installed through the opening 231 of the external block 23. Two springs 24 are fixedly installed between the opposite surfaces of the two external blocks 23 and the carrier plate 21. Each spring 24 is located on the outside of the corresponding sliding rod 22.

[0031] After the adaptive bearing mechanism 2 is connected to the adapter rod 5, when the adapter rod 5 is pulled by the four-way deflection mechanism 4, the outer block 23 can use the sliding rod 22 and the spring 24 to adjust the distance between itself and the carrier plate 21, thereby preventing the carrier plate 21 from being damaged after the support column shifts. In addition, the sliding rod 22 and the spring 24 can also adjust the distance between the outer block 23 and the four-way deflection mechanism 4 when the adapter rod 5 is installed between the four-way deflection mechanism 4, thereby facilitating the installation of the adapter rod 5.

[0032] Combination Figure 1 , Figure 2 and Figure 4 As shown, the four-way deflection mechanism 4 includes an adapter 41, a T-shaped hinge block 42, two lugs 43, and a T-shaped connecting block 44. The two lugs 43 are fixedly installed on the outer surface of the T-shaped hinge block 42. The adapter 41 is fixedly installed on the side surface of the corresponding fixing plate 11 by bolts. The T-shaped hinge block 42 is rotatably connected to the adapter 41. The two lugs 43 are welded and fixedly installed on the side of the T-shaped hinge block 42 away from the adapter 41. The T-shaped connecting block 44 is rotatably installed between the two adapters 41. A threaded hole 441 is provided on the side of the T-shaped connecting block 44 away from the lugs 43. The threaded hole 441 is used to screw the end of the adapter rod 5.

[0033] After this offset monitoring component is assembled between two support columns, when one support column sinks, the adaptive bearing mechanism 2 and the adapter rod 5 can be offset adaptively through the rotational engagement between the T-shaped connecting block 44 and the ear block 43. When one support column is offset in the forward and backward direction, the adaptive bearing mechanism 2 and the adapter rod 5 can be offset adaptively through the rotational engagement between the adapter 41 and the T-shaped hinge block 42, thereby further triggering the tilting of the wireless low-power inclinometer 3.

[0034] Specifically, inner rotor bearings 6 are embedded and fixedly installed on the upper and lower surfaces of the adapter 41 and the front surface of the lug 43. A rotating shaft 61 with a keyway 611 is inserted between two adjacent inner rotor bearings 6, and the rotating shaft 61 is interference-fitted with the inner sidewall of the corresponding inner rotor bearing 6.

[0035] The upper left surface of the T-shaped hinge block 42 and the front surface of the T-shaped connecting block 44 are both provided with a through hole 7 with a fitting key 71. The T-shaped hinge block 42 is rotatably connected to the adapter seat 41 by cooperating with the left rotating shaft 61 through its own through hole 7, so as to realize the hinge assembly in the front and rear direction. The T-shaped connecting block 44 is rotatably connected to the two ear blocks 43 by cooperating with the right rotating shaft 61 through its own through hole 7, so as to realize the hinge assembly in the vertical direction.

[0036] Combination Figure 1 and Figure 2 As shown, both ends of the adapter rod 5 are threaded. One end of the adapter rod 5 is screwed into the threaded hole 441 of the T-shaped connecting block 44. The other end is first screwed with a nut B51, then passes through the through-hole 231 of the outer connecting block 23, and finally screwed with another nut B51. The two nuts B51 are used to fix the other end of the adapter rod 5 to the outer connecting block 23, thus installing it between the four-way deflection mechanism 4 and the adaptive bearing mechanism 2.

[0037] Working principle: In use, first fix the two support column connectors 1 on the two adjacent support columns respectively. It should be noted that during installation, an external laser beam can be used to assist the installation to ensure that the two support column connectors 1 are on the same horizontal plane. Then, screw the adapter rod 5 into the threaded hole 441 of the T-shaped connecting block 44. Then, screw a nut B51 to the other end of the adapter rod 5 and pass it through the through hole 231 of the external connecting block 23. Then, use another nut B51 to fix the adapter rod 5 to the external connecting block 23. After connection, use an external level to place on the carrier plate 21 for testing to ensure that the carrier plate 21 is in a horizontal position after the entire assembly is installed. Finally, use a wireless low-power inclinometer 3 for monitoring.

[0038] During monitoring, when one of the support columns sinks or shifts to the left or right, the four-way deflection mechanism 4 at the corresponding position uses the adapter rod 5 to drive the adaptive bearing mechanism 2 and the wireless low-power inclinometer 3 above it to shift, thereby triggering an offset signal. Compared with existing technologies, it is possible to use one monitoring device to detect two support columns simultaneously, which can effectively reduce the cost during construction. At the same time, through the cooperation of the sliding rod 22 and the sliding groove 211 of the adaptive bearing mechanism 2, as well as the cooperation of the spring 24 and the external block 23, the installation length can be extended and adjusted by a certain distance, so that it can be installed and adjusted between support columns with different spacing, improving installation efficiency. In addition, the adapter rod 5 is detachable. When the installation distance is large, the adapter rod 5 of the corresponding length can be replaced for adaptation and installation.

Claims

1. A displacement monitoring component for a deep foundation pit support structure, characterized in that, It includes two support column connectors (1), an adaptive bearing mechanism (2) and a wireless low-power inclinometer (3). The wireless low-power inclinometer (3) is fixedly installed on the upper surface of the adaptive bearing mechanism (2). A four-way deflection mechanism (4) is fixedly installed on the opposite surfaces of the two support column connectors (1). An adapter rod (5) can be detachably installed between the four-way deflection mechanism (4) and the adaptive bearing mechanism (2).

2. The offset monitoring component for a deep foundation pit support structure according to claim 1, characterized in that, The support column connector (1) includes a fixing plate (11). Two mounting holes (111) are symmetrically opened through the outer surface of the fixing plate (11). A U-shaped steel sleeve (12) is inserted between the two mounting holes (111). Both ends of the U-shaped steel sleeve (12) are provided with external threads (121). Nuts A (13) are screwed onto the outer surface of the external threads (121).

3. The offset monitoring component for a deep foundation pit support structure according to claim 2, characterized in that, The adaptive bearing mechanism (2) includes a carrier plate (21). Two sliding grooves (211) are symmetrically opened through the left surface of the carrier plate (21). Two sliding rods (22) are slidably installed in each of the sliding grooves (211). An external block (23) is fixedly installed between the outer ends of the two sliding rods (22). Two springs (24) are fixedly installed between the external block (23) and the carrier plate (21). The springs (24) are sleeved on the outside of the corresponding sliding rods (22).

4. The offset monitoring component for a deep foundation pit support structure according to claim 3, characterized in that, The outer surface of the external block (23) is provided with through openings (231), and the opposite ends of the two adapter rods (5) are respectively passed through the corresponding through openings (231). The opposite ends of the two adapter rods (5) are screwed with two nuts B (51), and the two nuts B (51) are respectively located on the left and right sides of the corresponding external block (23).

5. The offset monitoring component for a deep foundation pit support structure according to claim 4, characterized in that, The four-way deflection mechanism (4) includes an adapter (41), which is fixedly installed on the side surface of the corresponding fixed plate (11). A T-shaped hinge block (42) is rotatably installed inside the adapter (41). Two ear blocks (43) are fixedly installed on the side of the T-shaped hinge block (42) away from the adapter (41). A T-shaped connecting block (44) is rotatably installed between the two ear blocks (43). A threaded hole (441) is opened on the side of the T-shaped connecting block (44) away from the ear blocks (43). The end of the adapter rod (5) away from the outer connecting block (23) is screwed into the threaded hole (441).

6. The offset monitoring component for a deep foundation pit support structure according to claim 5, characterized in that, The upper and lower surfaces of the adapter (41) and the outer surface of the ear block (43) are all embedded with and fixedly installed with inner rotor bearings (6). A rotating shaft (61) is installed between the two corresponding inner rotor bearings (6). A keyway (611) is opened on the outer surface of the rotating shaft (61). The upper left surface of the T-shaped hinge block (42) and the front surface of the T-shaped connecting block (44) are both provided with a transition hole (7) with a fitting key (71). The rotating shaft (61) is inserted into the corresponding transition hole (7), and the fitting key (71) is inserted into the corresponding keyway (611).

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