Stress-strain monitoring device for steel wire rope in hoisting process of reinforcement cage
By designing a stress-strain monitoring device and using a strain ring with detachable half-rings and fasteners, the problems of difficult sensor installation and inaccurate data during the hoisting of the steel cage were solved, achieving stable monitoring of the stress in the wire rope and improving construction safety and efficiency.
Patent Information
- Application Number
- CN202520496559.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-20
AI Technical Summary
During the hoisting of steel cages, existing stress and strain sensors have poor stability in complex and harsh environments, are difficult to install, and provide inaccurate data, making it difficult to effectively monitor the stress of steel wire ropes and affecting construction safety and efficiency.
Design a stress-strain monitoring device that uses two detachable half-ring spliced strain rings, equipped with stress-strain sensitive elements and a data acquisition system. It can be quickly installed and tightened through a telescopic tie rod assembly and fasteners, and can adapt to the monitoring needs of steel wire ropes of different specifications.
This improves the ease of sensor installation and stability, ensures data accuracy, reduces safety hazards during later tightening and maintenance, and enhances construction efficiency and quality.
Smart Images
Figure CN223804765U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of building construction, especially relate to the hoisting monitoring of reinforcement cage in support structure, concretely relate to a stress and strain monitoring device for steel wire rope in the hoisting process of reinforcement cage. BACKGROUND
[0002] In large construction projects, with the main structure increasing, the size and weight of the reinforcement cage of the support structure increase sharply. In the hoisting process, complex wind load in the air and the problem of coordinated operation of multiple lifting points are faced, and mechanical monitoring can feedback force information in real time, assist in adjusting the hoisting strategy, and ensure the stability of the main structure. It becomes an essential means to ensure the safety of hoisting and ensure the smooth progress of the project.
[0003] In the hoisting process of the reinforcement cage, if the hoisting process is effectively monitored, the monitoring of the tension and stress and strain of the steel wire rope is a very important link. There are certain technical difficulties in monitoring the stress and strain of the steel wire rope on the construction site.
[0004] Part of the stress and strain sensor has poor stability in complex and harsh environment, such as high temperature, high humidity or strong electromagnetic interference on the construction site, the measurement accuracy is easily affected, resulting in data deviation. For steel wire rope, unlike steel bar, the deformation is large, and there are more unstable factors, the sensor data fluctuates frequently, which brings great trouble to mechanical monitoring. Moreover, for the hoisting of large reinforcement cage, there are many problems with the general stress and strain sensor. After the steel wire is connected to the reinforcement cage and the lifting tool, it is difficult to install the stress and strain sensor. After installation, due to large deformation, the data is not accurate after loosening, and it is not easy to check, maintain and tighten. UTILITY MODEL CONTENTS
[0005] Based on the above technical problems, the purpose of the utility model is to provide a stress and strain monitoring device for steel wire rope in the hoisting process of reinforcement cage. The purpose of the utility model is realized through the following technical solutions.
[0006] A stress and strain monitoring device for steel wire rope in the hoisting process of reinforcement cage, comprising a stress and strain sensor and a data acquisition system; the stress and strain sensor comprises two strain rings arranged on the outer wall of the steel wire rope and arranged upward and downward, each strain ring is spliced by two independent and detachable symmetrical half rings, and a stress and strain sensitive element is arranged on the inner wall of each half ring; a set of manually tightened fasteners are arranged at the front and rear splicing positions of the two half rings of the same strain ring; the left half ring positions of the upper and lower strain rings are completely correspondingly arranged, and the right half ring positions are completely correspondingly arranged; the left half rings between the upper and lower strain rings are connected through a telescopic pull rod assembly; the right half rings of the upper and lower strain rings are connected to the data acquisition system after the lead wires of the right half rings are combined.
[0007] Further optimization, each group of fasteners includes a pair of connecting plates connected to the outer wall edges of the two half-rings respectively and having through holes, and a pair of pull rods passing through the pair of connecting plates.
[0008] Further optimization, one end of the telescopic pull rod assembly is fixed to the outer wall of the upper left half-ring through an upper fixing member, and the other end is fixed to the outer wall of the lower left half-ring through a lower fixing member, two telescopic rods are connected between the upper fixing member and the lower fixing member, and the two telescopic rods are sleeved with a telescopic control box for controlling the length of the telescopic rods.
[0009] Further, the strain ring is divided into three parts from top to bottom, which are a wire connecting ring, a sensitive element mounting ring and a telescopic pull rod fixing ring in sequence; the wire connecting ring is connected with the wire, the sensitive element mounting ring is internally provided with a stress and strain sensitive element, and the telescopic pull rod fixing ring is connected with the telescopic pull rod assembly; the outer diameters of the wire connecting ring and the sensitive element mounting ring are greater than that of the telescopic pull rod fixing ring, and the inner diameters of the strain ring are the same from top to bottom.
[0010] Further, the telescopic pull rod fixing rings of the two strain rings from top to bottom are the proximal ends of the two strain rings, and the wire connecting rings are the distal ends of the two strain rings.
[0011] Further, the fasteners are arranged on the outer wall of the sensitive element mounting ring.
[0012] The utility model discloses the advantages and beneficial effects are:
[0013] The stress and strain sensor is very convenient to install and fasten in the utility model, is buckled on the steel wire rope in the form of two half-rings, does not need to pass the steel wire from the head, and the annular design realizes the close cooperation with the steel wire rope. BRIEF DESCRIPTION OF DRAWINGS
[0014] The utility model will be further described below in combination with the drawings and examples.
[0015] Figure 1 It is three-dimensional structure schematic view for stress and strain sensor;
[0016] Figure 2 It is side view structure schematic view for stress and strain sensor;
[0017] Figure 3 It is main view structure schematic view for stress and strain sensor;
[0018] Figure 4 It is overhead structure schematic view for stress and strain sensor.
[0019] 1. Strain gauge ring; 11. Wire connecting ring; 12. Sensitive element mounting ring; 13. Telescopic tie rod fixing ring; 2. Fastener; 21. Connector; 22. Pull screw; 3. Telescopic tie rod assembly; 31. Upper fixing part; 32. Lower fixing part; 33. Telescopic rod; 34. Telescopic control box; 4. Wire; 5. Steel wire rope. Detailed Implementation
[0020] Example 1:
[0021] like Figures 1-4 As shown, a stress-strain monitoring device for wire rope 5 during the hoisting process of a rebar cage includes a stress-strain sensor and a data acquisition system.
[0022] The stress-strain sensor includes two strain rings 1 fitted on the outer wall of the wire rope and arranged one above the other. Each strain ring 1 is composed of two independent, detachable, symmetrical half-rings spliced together, and each half-ring has a stress-strain sensitive element on its inner wall.
[0023] In this embodiment, the strain ring 1 is divided into three parts vertically: a wire connecting ring 11, a sensitive element mounting ring 12, and a retractable rod fixing ring 13. The wire connecting ring 11 connects to the wire 4; the sensitive element mounting ring 12 houses the stress-strain sensitive element; and the retractable rod fixing ring 13 connects to the retractable rod assembly 3. The outer diameters of the wire connecting ring 11 and the sensitive element mounting ring 12 are larger than the outer diameter of the retractable rod fixing ring 13, while the inner diameters of the strain ring 1 are the same vertically. The retractable rod fixing rings 13 of the upper and lower strain rings 1 are the proximal ends, while the wire connecting ring 11 is the distal end. The fastener 2 is disposed on the outer wall of the sensitive element mounting ring 12.
[0024] Each of the front and rear sides of the two half-rings of the same strain ring 1 is provided with a set of manually tightened fasteners 2; in this embodiment, each set of fasteners 2 includes a pair of connecting plates 21 that are respectively connected to the outer wall edges of the two half-rings and have through holes, and a pair of tie rods 22 that pass through the pair of connecting plates 21.
[0025] The left and right halves of the two strain gauge rings 1 are positioned in perfect alignment, and the left and right halves are positioned in perfect alignment. The two left halves are connected by a telescopic rod assembly 3, and the two right halves are connected by wires 4 which are then combined and connected to the data acquisition system. In this embodiment, one end of the telescopic rod assembly 3 is fixed to the outer wall of the upper left halves by an upper fixing member 31, and the other end is fixed to the outer wall of the lower left halves by a lower fixing member 32. Two telescopic rods 33 are connected between the upper fixing member 31 and the lower fixing member 32, and a telescopic control box 34 for controlling the length of the telescopic rods is fitted over the two telescopic rods 33.
[0026] The stress and strain sensor in the embodiment: the maximum outer diameter is 50-80mm, the inner diameter is 20-40mm, the installation requirement of different specifications of steel wire ropes is adapted, the height is 30-60mm, too much interference to the hoisting of the reinforcement cage itself and subsequent construction is not caused, the working temperature range is:-20℃-+60℃, most of the environmental temperature conditions of construction sites can be adapted, whether it is winter construction in cold areas or outdoor work in hot summer, the sensor can work stably, and the measurement deviation will not increase or the sensor will not be damaged due to too high or too low temperature.
[0027] The material of the stress and strain sensitive element in the embodiment is:
[0028] The fiber grating sensing element: a periodic grating is written in the optical fiber, and the grating wavelength is shifted due to strain. It is resistant to electromagnetic interference and corrosion, and is suitable for long-term monitoring (such as bridges and dams).
[0029] Finally, it should be pointed out that the above is only used to illustrate the technical scheme of the utility model and is not limited. Although the utility model has been described in detail with reference to the preferred arrangement, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical scheme of the utility model.
Claims
1. A stress-strain monitoring device for a steel wire rope used in a steel cage hoisting process, characterized by: It comprises stress-strain sensors and a data acquisition system. The stress-strain sensors comprise two strain rings (1) arranged on the outer wall of the steel wire rope, and each strain ring (1) is composed of two independent detachable symmetrical half rings, and the inner wall of each half ring is provided with a stress-strain sensitive element. Each of the two half rings of the same strain ring (1) is provided with a set of manually tightened fasteners (2) on the front and rear sides. The left half rings of the upper and lower strain rings (1) are completely correspondingly arranged, and the right half rings are completely correspondingly arranged, and the left half rings of the upper and lower strain rings are connected through a telescopic pull rod assembly (3), and the right half rings of the upper and lower strain rings are connected to the data acquisition system after the lead wires (4) are combined.
2. The stress and strain monitoring device for steel wire rope used in the process of reinforcing cage hoisting according to claim 1, characterized in that: Each set of fasteners (2) comprises a pair of connecting plates (21) connected to the outer wall edges of the two half rings and having through holes, and a pair of pull screws (22) passing through the pair of connecting plates (21).
3. The apparatus for monitoring stress and strain of a wire rope for a reinforcing cage hoisting process according to claim 1, characterized in that: One end of the telescopic pull rod assembly (3) is fixed to the outer wall of the upper left half ring through an upper fixing member (31), and the other end is fixed to the outer wall of the lower left half ring through a lower fixing member (32), and two telescopic rods (33) are connected between the upper fixing member (31) and the lower fixing member (32), and the two telescopic rods (33) are sleeved with a telescopic control box (34) for controlling the length of the telescopic rod.
4. The apparatus for monitoring stress and strain of a wire rope for a reinforcing cage hoisting process according to claim 1, characterized by: The strain ring (1) is divided into three parts from top to bottom, which are a lead wire connecting ring (11), a sensitive element mounting ring (12) and a telescopic pull rod fixing ring (13) in sequence; the lead wire connecting ring (11) is connected to the lead wire (4), the sensitive element mounting ring (12) is provided with a stress-strain sensitive element, and the telescopic pull rod fixing ring (13) is connected to the telescopic pull rod assembly (3); the outer diameter of the lead wire connecting ring (11) and the sensitive element mounting ring (12) is greater than that of the telescopic pull rod fixing ring (13), and the inner diameter of the strain ring (1) is the same from top to bottom.
5. The stress and strain monitoring device for steel wire rope used in the process of reinforcing cage hoisting according to claim 4, characterized in that: The telescopic pull rod fixing rings (13) of the upper and lower strain rings (1) are the proximal ends of the two strain rings, and the lead wire connecting rings (11) are the distal ends of the two strain rings.
6. The apparatus for monitoring stress and strain of a wire rope for a reinforcing cage hoisting process according to claim 4, characterized in that: The fasteners (2) are arranged on the outer wall of the sensitive element mounting ring (12).