Modular adjustable mass concrete temperature monitoring device

Abstract

The utility model discloses a kind of modular adjustable mass concrete temperature monitoring devices based on, including double helix linkage adjusting mechanism and honeycomb compression-resistant shell;Double helix linkage adjusting mechanism includes: vertical adjusting mechanism and horizontal adjusting mechanism;Vertical adjusting mechanism includes: H-type support, trapezoidal thread screw rod and hand wheel;H-type support includes: crossbeam and the vertical beam located in the both sides of crossbeam;Cavity is equipped in vertical beam;Floating mounting seat is equipped in the transverse center hole of crossbeam;Trapezoidal thread screw rod is penetrated crossbeam from bottom to top, and passes through the thread hole of floating mounting seat;Horizontal adjusting mechanism is equipped in the cavity of vertical beam;Honeycomb compression-resistant shell is fixedly connected with the bottom end of trapezoidal thread screw rod;Temperature detection device is encapsulated in honeycomb compression-resistant shell inside.The utility model is combined by double helix linkage adjusting mechanism and honeycomb compression-resistant shell, realize the high-precision three-dimensional positioning and stable protection of temperature monitoring device in mass concrete.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering monitoring technology, and more specifically to a modular adjustable large-volume concrete temperature monitoring device. Background Technology

[0002] Due to their unique properties and applications, mass concrete places higher demands on construction and monitoring technologies. During construction, internal temperature control of mass concrete is crucial, as temperature fluctuations can lead to cracking, affecting structural safety and durability. Simultaneously, strength monitoring of mass concrete is also a vital aspect of ensuring project quality. While some progress has been made in related technologies, many problems remain to be solved.

[0003] In the Chinese invention patent "A Positioning Device for Internal Temperature Sensor of Large Volume Concrete" with publication number CN202421196885, although the extension and retraction can be achieved through the cooperation of the cylinder assembly and the telescopic sleeve, the locking buckle plays the role of fixing the cylinder assembly and the telescopic arm during the vibration process to prevent them from shifting. However, this also means that once the locking buckle is locked, fine-tuning is no longer possible. Moreover, the rigid connection between the telescopic arm, the clamping clamp and the cylinder assembly, while ensuring the stability of the sensor position, also limits the possibility of fine-tuning.

[0004] In another Chinese invention patent, CN202211464351, titled "A Sensor and Monitoring Method for Monitoring the Strength of Large-Volume Concrete," although the waterproof layer material is epoxy resin, which has a certain degree of waterproofing, it is brittle and has poor impact resistance. During concrete pouring and curing, it may be damaged by pressure or impact, leading to a decrease in waterproofing performance. To ensure that the sensor can adapt to the deformation of the concrete, a material with a certain degree of flexibility is required. However, flexible materials often have poor compressive strength and are difficult to withstand the pressure generated during concrete pouring and curing.

[0005] In summary, current technologies related to large-volume concrete sensors have significant shortcomings in balancing the flexibility of the positioning device with the performance of the sensor itself. Utility Model Content

[0006] The purpose of this invention is to provide a modular adjustable temperature monitoring device for large-volume concrete. By combining a double-helix linkage adjustment mechanism with a honeycomb pressure-resistant shell, the device achieves high-precision three-dimensional positioning and structural stability protection for the temperature monitoring device in large-volume concrete.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A modular adjustable temperature monitoring device for large-volume concrete includes: a double-helix linkage adjustment mechanism and a honeycomb pressure-resistant shell;

[0009] The double-helix linkage adjustment mechanism includes: a vertical adjustment mechanism and a horizontal adjustment mechanism;

[0010] The vertical adjustment mechanism includes: an H-shaped bracket, a trapezoidal threaded screw, and a handwheel;

[0011] The H-shaped support includes: a crossbeam and longitudinal beams located on both sides of the crossbeam; the longitudinal beams are provided with cavities;

[0012] A floating mounting seat is provided in the central hole of the crossbeam; the trapezoidal threaded screw passes through the crossbeam from bottom to top and through the threaded hole of the floating mounting seat;

[0013] The handwheel is located above the crossbeam and is connected to the top of the trapezoidal threaded screw that passes through the center hole of the crossbeam via a keyway.

[0014] Each of the longitudinal beams is equipped with a horizontal adjustment mechanism; the horizontal adjustment mechanism includes: a ball screw, a planetary gear set and a horizontal fine adjustment knob;

[0015] The horizontal fine-tuning knob is meshed with the sun gear of the planetary gear set; the planet carrier of the planetary gear set is connected to the ball screw through a coupling; the ball screw is transversely inserted through the side wall of the longitudinal beam and located at the horizontal linear guide rail inside the beam, and is fixedly connected to the side wall of the floating mounting base.

[0016] The horizontal adjustment mechanism is equipped with a spring pin locking mechanism for locking the ball screw and the floating mounting seat;

[0017] The honeycomb pressure-resistant shell is fixedly connected to the bottom end of the trapezoidal threaded screw; a temperature detection device is encapsulated inside the honeycomb pressure-resistant shell.

[0018] Furthermore, the honeycomb cells of the honeycomb pressure-resistant shell are filled with lightweight polyurethane foam.

[0019] Furthermore, the reduction ratio between the sun gear and the planetary carrier is 5:1.

[0020] Furthermore, the H-shaped bracket is embedded with carbon fiber reinforcing ribs; the lower half of the H-shaped bracket is connected to the honeycomb pressure-resistant shell by laser welding.

[0021] Furthermore, the bottom of the honeycomb pressure-resistant shell is provided with a universal joint base.

[0022] Furthermore, the temperature detection device and the double-helix linkage adjustment mechanism are covered with an epoxy potting layer; the thermal conductivity of the epoxy potting layer is ≥1.2W / m·K.

[0023] Furthermore, the honeycomb pressure-resistant shell is provided with a double sealing structure of O-ring fluororubber and anaerobic adhesive at the fixed connection between the trapezoidal threaded screw.

[0024] Furthermore, the temperature detection device is connected to the honeycomb pressure-resistant shell via a sheath; the sheath penetrates the bottom of the honeycomb pressure-resistant shell; a conical polyurethane sealant is provided at the position where the sheath penetrates the bottom of the honeycomb pressure-resistant shell.

[0025] According to the specific embodiments provided by this utility model, the following technical effects are disclosed:

[0026] This invention achieves high-precision adjustment of the monitoring device in both vertical and horizontal directions through the cooperation of a trapezoidal threaded screw and handwheel in the vertical adjustment mechanism, and the linkage of a ball screw and planetary gear set in the horizontal adjustment mechanism. This adapts to the needs of temperature sensor placement at different depths and locations, ensuring the accuracy and representativeness of the measurement points. The honeycomb pressure-resistant shell adopts a honeycomb structure design, possessing excellent compressive strength and structural stability, effectively resisting external pressure and vibration generated during the pouring and curing of large-volume concrete, ensuring the normal operation and continuous data acquisition of the monitoring device under complex working conditions. The handwheel, fine-tuning knob, and spring pin locking mechanism enable precise control and rapid locking of the adjustment process, ensuring the stability of the device after adjustment and improving the safety and operational efficiency of on-site construction. This invention is applicable to large-volume concrete structures of various shapes and sizes and can be integrated with temperature sensors, data acquisition systems, etc., to form a complete temperature monitoring system, providing a scientific basis for temperature control and crack prevention in large-volume concrete construction, and improving project quality and the level of intelligent construction. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] The following description, in conjunction with the accompanying drawings, further illustrates the modular adjustable large-volume concrete temperature monitoring device of this utility model.

[0029] Figure 1 This is an overall structural diagram of the modular adjustable large-volume concrete temperature monitoring device of this utility model;

[0030] Figure 2 This is a cross-sectional view of the vertical adjustment mechanism in the modular adjustable large-volume concrete temperature monitoring device of this utility model.

[0031] Figure 3 This is a structural diagram of the horizontal adjustment mechanism in the modular adjustable large-volume concrete temperature monitoring device of this utility model;

[0032] Figure 4 This is a cross-sectional view of the honeycomb compression shell in the modular adjustable large-volume concrete temperature monitoring device of this utility model.

[0033] Figure 5 This is a schematic diagram of the installation process of the modular adjustable large-volume concrete temperature monitoring device in this utility model.

[0034] Figure descriptions: 1. Trapezoidal threaded screw; 2. Honeycomb pressure-resistant shell; 3. H-type bracket; 4. Epoxy resin; 5. Handwheel; 6. Temperature detection device; 7. Ball screw; 8. Longitudinal spring pin locking mechanism. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, this utility model provides a modular adjustable large-volume concrete temperature monitoring device, wherein the double-helix linkage adjustment mechanism includes: a vertical adjustment mechanism and a horizontal adjustment mechanism;

[0038] The vertical adjustment mechanism includes: an H-shaped bracket 3, a trapezoidal threaded screw 1, and a handwheel 5;

[0039] The H-shaped bracket 4 includes: a crossbeam and longitudinal beams located on both sides of the crossbeam; the longitudinal beams are provided with cavities;

[0040] A floating mounting seat is provided in the central hole of the crossbeam; the trapezoidal threaded screw 1 passes through the crossbeam from bottom to top and through the threaded hole of the floating mounting seat;

[0041] The handwheel 5 is located above the crossbeam and is connected to the top of the trapezoidal threaded screw 1 that passes through the center hole of the crossbeam via a keyway.

[0042] Each of the longitudinal beams is equipped with a horizontal adjustment mechanism; the horizontal adjustment mechanism includes: a ball screw 7, a planetary gear set and a horizontal fine adjustment knob;

[0043] The horizontal fine-tuning knob is meshed with the sun gear of the planetary gear set; the planet carrier of the planetary gear set is connected to the ball screw 7 via a coupling; the ball screw 7 is transversely inserted through the side wall of the longitudinal beam and located at the horizontal linear guide rail inside the beam, and is fixedly connected to the side wall of the floating mounting base.

[0044] The horizontal adjustment mechanism is provided with a spring pin locking mechanism 8 for locking the ball screw 7 and the floating mounting seat;

[0045] The honeycomb compression-resistant shell 2 is fixedly connected to the bottom end of the trapezoidal threaded screw 1; a temperature detection device 6 is encapsulated inside the honeycomb compression-resistant shell 2; the temperature detection device 6 is integrated inside the honeycomb compression-resistant shell 2. The temperature detection device 6 and the double-helix linkage adjustment mechanism are covered with an epoxy potting layer; the thermal conductivity of the epoxy potting layer is ≥1.2W / m·K (hardness Shore D≥85). The temperature detection device 6 is connected to the honeycomb compression-resistant shell 2 via a sheath; the sheath penetrates the bottom of the honeycomb compression-resistant shell 2; a conical polyurethane sealant is provided at the position where the sheath penetrates the bottom of the honeycomb compression-resistant shell 2.

[0046] The honeycomb pressure-resistant shell 2 is filled with lightweight polyurethane foam in its honeycomb cells; the honeycomb cell wall inclination angle is 55°. According to finite element simulation, it reduces the weight by 40% compared to the solid shell and increases the bending stiffness by 35%.

[0047] The bottom of the honeycomb pressure-resistant shell 2 is equipped with a universal joint base. The connection between the honeycomb pressure-resistant shell 2 and the trapezoidal threaded rod 1 is equipped with a double-sealing structure consisting of an O-ring (temperature resistant -40~120℃) and anaerobic adhesive. The H-type bracket 4 and the temperature detection device are integrally encapsulated within a 6061-T6 aluminum alloy honeycomb shell (3mm aperture, 2mm wall thickness), with a compressive strength ≥1MPa. The temperature detection device is specifically a temperature sensor.

[0048] Linkage locking: After adjustment, the trapezoidal threaded screw and ball screw are fixed by the self-locking nut (preload torque 0.8 N·m) of the spring pin locking mechanism to prevent displacement caused by pouring vibration.

[0049] The main inventive point of this utility model is:

[0050] 1) The honeycomb pressure-resistant shell 2 is made of 6061-T6 aluminum alloy, with hexagonal honeycomb unit pore diameter of 3mm, wall thickness of 2mm, and pore wall inclination angle of 55°. According to finite element simulation verification, the compressive strength is ≥1MPa, and the weight is reduced by 42% compared with the solid shell. The honeycomb unit is filled with lightweight polyurethane foam (density 0.3g / cm³) to further absorb the vibration impact energy (attenuation rate ≥30%).

[0051] 2) Torsional reinforced integrated bracket:

[0052] The H-shaped bracket has carbon fiber reinforced ribs (tensile strength ≥3GPa) embedded in the longitudinal beams and is connected to the honeycomb compression shell 2 by laser welding. The overall bending stiffness is ≥200N / mm². The bracket base is equipped with a universal joint (damping torque 0.6N·m), which allows for ±15° angle adaptive adjustment to match the unevenness of the steel reinforcement skeleton.

[0053] 3) Epoxy potting and sealing protection system

[0054] Gradient potting process:

[0055] The internal circuit board and adjustment mechanism are potted in two layers: First layer: Low viscosity epoxy resin 9 (flowability 300cps) fills the gaps in the precision gears (e.g. Figure 4 (As shown); Second layer: High-hardness epoxy resin (Shore D≥85) covers the entire structure to form a pressure-resistant protective layer; the thermal conductivity of the potting compound is ≥1.2W / m·K to ensure that the sensor probe is synchronized with the ambient temperature.

[0056] Multi-level waterproof sealing:

[0057] The housing seams are sealed with a double seal of O-ring fluororubber (compression rate 25%) and anaerobic adhesive; the root of the sensor sheath is sealed with conical polyurethane sealant (slope angle 30°) with a water pressure resistance ≥0.3MPa.

[0058] Example 2

[0059] like Figure 5 As shown, this utility model also provides a process method using a modular adjustable large-volume concrete temperature monitoring device:

[0060] S1. Start the installation program;

[0061] S2. The universal joints on the base of the honeycomb compression shell 2 are precisely installed at the intersection of the steel mesh to ensure stability and flexibility;

[0062] S3. Install the temperature monitoring device 6 components inside the honeycomb pressure-resistant shell 2 in preparation for subsequent adjustment work;

[0063] S4. Vertical adjustment is achieved by rotating the trapezoidal threaded screw 1 using the handwheel 5; for each rotation of the handwheel 5, the trapezoidal threaded screw 1 drives the honeycomb pressure-resistant housing 2 to move up and down by 1.5 mm, with an accuracy of ±0.5 mm.

[0064] S5. Use the horizontal fine-tuning knob to drive the ball screw through the planetary gear set for horizontal adjustment; the horizontal fine-tuning knob feeds 0.2 mm per revolution and has a maximum stroke of ±20 mm.

[0065] S6. Conduct a compressive strength test on the entire temperature monitoring device to ensure its stability during the concrete pouring process;

[0066] S7. The collected temperature data is uploaded to the cloud platform in real time for remote monitoring and analysis.

[0067] S8. After completing all installation and debugging work, enter normal monitoring status.

[0068] Throughout the entire process, the combination of a double-helix linkage adjustment mechanism and a honeycomb pressure-resistant shell 2 enables high-precision three-dimensional positioning and structural stability protection of the temperature monitoring device in large-volume concrete. This design not only improves the accuracy of monitoring but also enhances the overall stability and durability of the temperature detection device.

[0069] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular adjustable mass concrete temperature monitoring device based on, characterized by, include: Double-helix linkage adjustment mechanism and honeycomb pressure-resistant shell (2); The double-helix linkage adjustment mechanism includes: a vertical adjustment mechanism and a horizontal adjustment mechanism; The vertical adjustment mechanism includes: an H-shaped bracket (3), a trapezoidal threaded screw (1), and a handwheel (5); The H-shaped bracket (3) includes: a crossbeam and longitudinal beams located on both sides of the crossbeam; the longitudinal beams are provided with cavities; A floating mounting seat is provided in the transverse center hole of the crossbeam; the trapezoidal threaded screw (1) passes through the crossbeam from bottom to top and through the threaded hole of the floating mounting seat; The handwheel (5) is located above the crossbeam and is connected to the top of the trapezoidal threaded screw (1) that passes through the crossbeam via a keyway; Each of the longitudinal beams is equipped with a horizontal adjustment mechanism; the horizontal adjustment mechanism includes: a ball screw (7), a planetary gear set and a horizontal fine adjustment knob; The horizontal fine-tuning knob is meshed with the sun gear of the planetary gear set; the planet carrier of the planetary gear set is connected to the ball screw (7) through a coupling; the ball screw (7) is transversely passed through the side wall of the longitudinal beam and is located at the horizontal linear guide rail inside the cross beam, and is fixedly connected to the side wall of the floating mounting seat. The horizontal adjustment mechanism is provided with a spring pin locking mechanism (8) for locking the ball screw (7) and the floating mounting seat. The honeycomb pressure-resistant shell (2) is fixedly connected to the bottom end of the trapezoidal threaded screw (1); a temperature detection device (6) is encapsulated inside the honeycomb pressure-resistant shell (2).

2. The modular adjustable mass concrete temperature monitoring device according to claim 1, wherein, The honeycomb pressure-resistant shell (2) is filled with lightweight polyurethane foam within its honeycomb cells.

3. The modular adjustable mass concrete temperature monitoring device of claim 1, wherein, The reduction ratio between the sun gear and the planetary carrier is 5:

1.

4. The modular adjustable mass concrete temperature monitoring device of claim 1, wherein, The bottom of the honeycomb pressure-resistant shell (2) is provided with a universal joint base.

5. The modular adjustable mass concrete temperature monitoring device of claim 1, wherein, The temperature detection device (6) and the double-helix linkage adjustment mechanism are covered with an epoxy potting layer; the thermal conductivity of the epoxy potting layer is ≥1.2W / m·K.

6. The modular adjustable mass concrete temperature monitoring device of claim 1, wherein, The honeycomb pressure-resistant shell (2) and the trapezoidal threaded screw (1) are fixedly connected by a double sealing structure of O-ring fluororubber ring and anaerobic adhesive.

7. The modular adjustable mass concrete temperature monitoring device of claim 1, wherein, The temperature detection device (6) is connected to the honeycomb pressure-resistant shell (2) through a sheath; the sheath penetrates the bottom of the honeycomb pressure-resistant shell (2); a conical polyurethane sealant is provided at the position where the sheath penetrates the bottom of the honeycomb pressure-resistant shell (2).

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