A modular packaging device for pipe pile sensors

Abstract

This utility model discloses a modular packaging device for a pipe pile sensor, including a sensor compartment, a transmission compartment, and a transmission mechanism. The transmission mechanism includes a central screw penetrating the sensor compartment and the transmission compartment, a conical block, a guide rod for limiting the radial movement direction of the conical block, and a spring reset mechanism. One end of the guide rod is slidably connected to the inner wall of the guide rod, and the other end is fixedly connected to the conical block. The conical block includes multiple conical block units that can radially separate or merge depending on the rotation direction of the central screw. The spring reset mechanism is sleeved on the central screw extending into the transmission compartment. This utility model is easy to operate, requiring only a simple rotation operation to complete the installation; it is reliably fixed, with a dual spring system ensuring long-term stable operation; it is easy to maintain, with a modular design supporting quick sensor replacement; it is cost-effective, and reusable to reduce overall investment.

Description

Technical Field

[0001] This utility model pertains to PHC pipe pile packaging devices, specifically a modular packaging device for pipe pile sensors. Background Technology

[0002] In PHC pipe pile and slope protection engineering, sensor packaging technology is the key to real-time monitoring of pile foundation bearing capacity, deformation and environmental parameters. Traditional packaging methods mainly rely on welding or adhesive fixing. Although they can achieve short-term monitoring, they have the following problems: (1) low construction efficiency, adhesive curing or welding cooling takes time and delays the construction period; (2) difficult maintenance, sensor replacement requires destroying the packaging structure and is costly; (3) poor environmental adaptability, extreme working conditions such as high salinity in the ocean and low temperature in frozen soil can easily lead to adhesive failure or metal corrosion; (4) insufficient vibration resistance: vibration during pile foundation construction can easily cause sensor signal drift, and sensor displacement exceeds the limit under high frequency vibration, affecting data accuracy. Utility Model Content

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a modular packaging device for pipe pile sensors that is based on mechanical transmission and elastic reset, plug and play, and realizes long-term stable monitoring of sensors.

[0004] Technical solution: The present invention provides a modular packaging device for a pipe pile sensor, comprising a sensor compartment, a transmission compartment, and a transmission mechanism; the transmission mechanism includes a central screw penetrating the sensor compartment and the transmission compartment, a conical block, a guide rod for limiting the radial movement direction of the conical block, and a spring reset mechanism; one end of the guide rod is slidably connected to the inner wall of the transmission compartment, and the other end is fixedly connected to the conical block; the conical block includes multiple conical block units that can radially separate or merge depending on the rotation direction of the central screw; the spring reset mechanism is sleeved on the central screw extending into the transmission compartment.

[0005] Furthermore, the spring reset mechanism includes a main reset spring, an auxiliary damping spring, and a washer. One end of the main reset spring is fixedly connected to the washer, and the other end is fixedly connected to the inner wall of the transmission compartment to provide axial reset force. One end of the auxiliary damping spring is fixedly connected to the washer, and the other end is fixedly connected to the central screw to absorb micro-vibrations. The main reset spring and the auxiliary damping spring work together to ensure the stability of the device in a vibration environment.

[0006] Furthermore, the guide rods are arranged in a square four-point symmetrical structure to limit the radial movement direction of the conical block and prevent offset and jamming.

[0007] Furthermore, the sensor compartment and the transmission compartment are separated by a silicone diaphragm.

[0008] Furthermore, the conical block unit can engage with the rubber bushing embedded in the positioning hole of the pipe pile to form a mechanical interlock.

[0009] Furthermore, an anti-corrosion lubricating grease layer and a damping rubber layer are provided between the conical block unit and the rubber bushing. Preferably, the surface of the conical block unit is machined with anti-slip texture, the texture depth of which is 0.5-1mm. The mating of the pipe pile and the rubber bushing can significantly improve the anti-slip capability.

[0010] To eliminate human error during installation and ensure that the preload force reaches the optimal design value for each installation, a miniature torque sensor and an LED indicator ring for real-time display of the installation status are installed on the top of the central screw, which can monitor the rotational torque in real time.

[0011] Furthermore, the number of conical block units is 2 or 4, with the specific number matching the diameter of the pipe pile and the number of positioning holes to ensure installation stability and quick disassembly.

[0012] Furthermore, the sensor compartment is equipped with various standardized slots compatible with different sensors. The conical block expands or contracts by rotating the central screw, enabling rapid installation and removal of the sensors.

[0013] Furthermore, the bottom of the sensor compartment is equipped with miniature drainage holes for self-cleaning and to prevent mud buildup.

[0014] Working Principle: During installation, the conical block unit expands radially by rotating the screw, forming a mechanical interlock with the positioning hole of the pipe pile. A spring return mechanism provides continuous preload, ensuring stability under vibration and effectively protecting the sensor from external environmental influences. For maintenance, the device can be quickly disassembled by reversing the screw rotation. During installation, the operator rotates the central screw. When the torque is below the lower limit, the LED displays red, indicating insufficient tightening; when the torque enters the optimal preset range, the LED turns green, indicating proper installation; if rotation continues and the torque exceeds the limit, the LED flashes yellow, warning of over-tightening risk. This design provides visualized and quantitative guidance for the installation process, eliminating reliance on operator experience and greatly improving the uniformity and reliability of installation quality.

[0015] Beneficial effects: Compared with the prior art, this utility model has the following characteristics:

[0016] 1. Easy to operate; installation can be completed with just a simple rotation.

[0017] 2. Reliable fixation; the dual spring system ensures long-term stable operation.

[0018] 3. Easy to maintain; modular design supports quick sensor replacement.

[0019] 4. High cost-effectiveness, reusable and reducing overall investment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the conical block 22 of this utility model when it is not expanded;

[0022] Figure 3 This is a cross-sectional view of the conical block 22 of this utility model when it is separated;

[0023] Figure 4 This is a partial enlarged view of the conical block unit 321 of this utility model. Detailed Implementation

[0024] like Figure 1 The modular packaging device for pipe pile sensors is used for intelligent construction monitoring of prestressed high-strength concrete (PHC) pipe piles 5 and slope protection anti-uplift piles, as well as for post-construction displacement monitoring. It is placed on top of the pipe pile 5. The modular packaging device for pipe pile sensors has a split shell, including a sensor compartment 1 and a transmission compartment 2. The sensor compartment 1 is equipped with various standardized slots with silicone cushioning pads, which can be compatible with different types of sensors such as strain gauges, temperature sensors, and acceleration sensors. The sensor compartment 1 and the transmission compartment 2 are separated by a silicone diaphragm 4. The transmission mechanism 3 is used to drive the conical block 32 to expand or contract radially, thereby achieving mechanical locking of pipe piles of different diameters. Large-diameter pipe piles have a large expansion angle to maintain uniform force, while small-diameter pipe piles have a small expansion angle to ensure stable engagement. It includes a central screw 31, a conical block 32, a guide rod 33 for limiting the radial movement direction of the conical block, and a spring reset mechanism 34. One end of the guide rod 33 is slidably connected to the inner wall of the top surface of the transmission compartment 2, and the other end is fixedly connected to the conical block 32. A spring reset mechanism 34 is mounted on the central screw 31 extending into the transmission chamber 2. Four guide rods 33 are arranged in a square, four-point symmetrical structure to limit the radial movement of the conical block 32, preventing offset and jamming. The guide rods 33 have a diameter of 8mm and are chrome-plated. The central screw 31 uses a trapezoidal thread design with a thread helix angle of 15° to ensure smooth transmission. The surface of the conical block 32 is machined with serrations 0.8mm deep, and the positioning hole of the mating pipe pile 5 is fitted with a rubber bushing with a Shore hardness of 65. The central screw 31 uses a self-lubricating alloy or ceramic coating to reduce wear and extend service life. The bottom of the sensor chamber 1 is equipped with miniature drainage holes and a hydrophilic coating for self-cleaning and preventing mud deposition.

[0025] like Figures 2-3The spring return mechanism 34 includes a main return spring 341, an auxiliary damping spring 342, and a washer 343. The center hole of the washer 343 is slidably connected to the central screw 31. The main return spring 341 and the auxiliary damping spring 342 are both sleeved on the outside of the central screw 31 and fixedly connected to both sides of the washer 343, respectively. One end of the main return spring 341 is fixedly connected to the washer 343, and the other end is fixedly connected to the lower end of the guide rod 33; one end of the auxiliary damping spring 342 is fixedly connected to the washer 343, and the other end is fixedly connected to the central screw 31. The conical block 32 includes multiple conical block units 321 that can radially separate or merge depending on the rotation direction of the central screw 31.

[0026] like Figure 4 The conical block 32 comprises multiple conical block units 321 that can radially separate or merge depending on the rotation direction of the central screw 31. The conical block units 321 can engage with the rubber bushings embedded in the positioning holes of the pipe pile 5 to form a mechanical interlock. O-rings 35 and buffer layers 36 are provided between the conical block units 321 and the rubber bushings to dissipate energy and enhance seismic performance. The number of conical block units 321 can be two, with the specific number matched according to the diameter of the pipe pile 5 and the number of positioning holes to ensure installation stability and rapid disassembly.

[0027] A miniature torque sensor and LED indicator ring are located on the top of the central screw 31 to display the installation status in real time. During installation, the operator rotates the central screw 31. When the torque is below the lower limit, the LED displays red, indicating that it is not tightened; when the torque enters the optimal preset range, the LED turns green, indicating that the installation is in place; if rotation continues and the torque exceeds the limit, the LED flashes yellow, warning of the risk of over-tightening. This design enables visualization and quantitative guidance of the installation process, eliminating reliance on operator experience and greatly improving the uniformity and reliability of installation quality. The guide rod 33 is coated with a low-friction material to reduce the risk of particulate matter jamming. The sensor compartment 1 has a built-in wireless data transmission module that supports LoRa, NB-IoT, or 5G communication for remote monitoring.

[0028] In marine environments, the outer surfaces of sensor compartment 1 and transmission compartment 2 are coated with salt spray corrosion resistant materials, while the inner surfaces are made of low-temperature resistant polymer materials. Anti-corrosion lubricating grease is added between the conical block 32 and the rubber bushing. In permafrost environments, the silicone buffer layer uses a low-temperature flexible material to ensure that it still has buffering performance at -40℃.

[0029] The installation method of the modular packaging device for the pipe pile sensor in this embodiment is as follows:

[0030] a. Sensor installation: Accurately place the sensor into the fixing slot of sensor compartment 1.

[0031] b. Mechanical locking: Rotating the central screw 31 clockwise drives the conical block 32 to expand radially to a predetermined position, that is, the outer surface of the conical block 32 forms a mechanical interlock with the positioning hole of the pipe pile 5.

[0032] c. Pre-tightening retention: The pre-tightening force of the main return spring 341 and the auxiliary damping spring 342 is used to maintain stable contact pressure.

[0033] When maintenance is required, the device can be quickly disassembled by rotating the central screw 31 counterclockwise.

Claims

1. A modular packaging device for a pipe pile sensor, characterized in that: The system includes a sensor compartment (1), a transmission compartment (2), and a transmission mechanism (3). The transmission mechanism (3) includes a central screw (31) that runs through the sensor compartment (1) and the transmission compartment (2), a conical block (32), a guide rod (33) for limiting the radial movement direction of the conical block, and a spring reset mechanism (34). One end of the guide rod (33) is slidably connected to the inner wall of the transmission compartment (2), and the other end is fixedly connected to the conical block (32). The conical block (32) includes multiple conical block units (321) that can radially separate or merge depending on the rotation direction of the central screw (31). The spring reset mechanism (34) is sleeved on the central screw (31) that extends into the transmission compartment (2).

2. The modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The spring reset mechanism (34) includes a main reset spring (341), an auxiliary damping spring (342) and a washer (343). One end of the main reset spring (341) is fixedly connected to the washer (343), and the other end is fixedly connected to the inner wall of the transmission compartment (2). One end of the auxiliary damping spring (342) is fixedly connected to the washer (343), and the other end is fixedly connected to the central screw (31).

3. The modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The guide rod (33) is arranged in a square four-point symmetrical structure.

4. The modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The sensor compartment (1) and the transmission compartment (2) are separated by a silicone diaphragm (4).

5. A modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The conical block unit (321) can engage with the rubber bushing embedded in the positioning hole of the pipe pile (5) to form a mechanical interlock.

6. The modular packaging device for a pipe pile sensor according to claim 5, characterized in that: An O-ring (35) and a buffer layer (36) are provided between the conical block unit (321) and the rubber bushing.

7. The modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The central screw (31) is equipped with a miniature torque sensor and an LED indicator ring for real-time display of the installation status.

8. The modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The number of the conical block units (321) is 2 or 4.

9. A modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The sensor compartment (1) is equipped with a variety of standardized slots that are compatible with different sensors.

10. A modular packaging device for a pipe pile sensor according to claim 1, characterized in that: The sensor compartment (1) has a micro drainage hole at the bottom.

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