Structural stress data acquisition device for civil engineering

Abstract

The utility model provides a structural stress data acquisition device for civil engineering, a strain gauge comprises a pipe body and installation assemblies installed at the two ends of the pipe body, a protective shell located between the two installation assemblies is installed on the outer surface of the pipe body, a connecting rod is arranged in the protective shell in a penetrating mode, and the connecting rod is connected with the pipe body. One end of the connecting rod is connected with a contact plate, the other end of the connecting rod penetrates through the protective shell and the pipe body to be connected with a pressing plate located in the pipe body, and the bottom side of the pressing plate makes contact with a strain assembly; the beneficial effects of the strain gauge are that the pipe body can be detachably installed in the first fixing member and the second fixing member, the strain gauge is prevented from occupying a large space during storage, the strain assembly is not liable to be subjected to electromagnetic interference of an external loop mirror through the protection housing, the measurement precision of the strain gauge is improved, and the strain gauge is convenient to use. And a damping spring has a damping effect, so that the service life of the strain gauge can be ensured, and the measurement precision of the strain gauge is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of structural stress data acquisition devices, and in particular to a structural stress data acquisition device for civil engineering. Background Technology

[0002] In large-scale civil engineering projects such as civil engineering, bridges, and tunnels, remote and ultra-long-distance detection of the stress state of engineering structures has always been an effective means sought after by the industry. Especially with the rapid development of urbanization in my country, higher requirements have been placed on the supervision of the quality, safety, and civilized construction of construction projects. Today, many unprecedented long, large, high, deep, special, and dangerous projects have emerged. An important part of the construction of these projects is the detection of the mechanical state of the engineering structure, such as pressure, strain, distance, humidity, and temperature. A strain gauge is a device used to measure changes in the shape or size of an object. It can convert these changes into measurable electrical signals, thereby realizing the quantitative detection of the strain of the object. However, the tube and mounting base of existing strain gauges are not easy to disassemble, making them inconvenient for workers to use. In addition, the measurement accuracy of existing strain gauges is low when performing strain tests on engineering structures. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a structural stress data acquisition device for civil engineering, which solves the problems of the tube body and mounting base of the existing strain gauge being inconvenient to disassemble and the low measurement accuracy when performing strain tests on engineering structures.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] A structural stress data acquisition device for civil engineering includes a strain gauge. The strain gauge comprises a tube and mounting assemblies installed at both ends of the tube. A protective shell is mounted on the outer surface of the tube between the two mounting assemblies. A connecting rod passes through the protective shell. One end of the connecting rod is connected to a contact plate, and the other end of the connecting rod passes through the protective shell and the tube, connecting to a pressure plate located inside the tube. The bottom side of the pressure plate contacts the strain gauge assembly. The strain gauge assembly is electrically connected via wires to a measuring circuit installed inside the tube. A damping spring passes through the outer surface of the connecting rod and is located inside the protective shell. One end of the damping spring is connected to the protective shell, and the other end is mounted on the tube. The damping spring in this technical solution provides vibration damping, which not only ensures the service life of the strain gauge but also improves its measurement accuracy.

[0006] In one embodiment of the present invention, two connecting plates that are slidably connected to the pressure plate are installed inside the tube, and a fixing plate installed inside the tube is provided between the two connecting plates. The measuring circuit is installed inside the fixing plate.

[0007] In one embodiment of this utility model, the installation assembly includes a first fixing member and a second fixing member movably connected to the first fixing member. The first fixing member has a groove that matches the shape of the tube body. The second fixing member has a screw threadedly connected to it, and the screw passes through the second fixing member and contacts the tube body. This technical solution, by having the screw pass through the second fixing member and threadedly connected to it, can firmly fix the tube body in the first fixing member, thereby allowing the tube body to be detachably installed in the first and second fixing members, which is convenient for workers to use.

[0008] In one embodiment of the present invention, a fixing block is installed on both the first fixing member and the second fixing member, and the two fixing blocks are connected by bolts. The first fixing member is connected to a mounting plate through a connecting plate, and the mounting plate has two mounting holes.

[0009] In one embodiment of this utility model, it further includes an axial force gauge, a rebar gauge, and a pressure gauge. When in use, the strain gauge, axial force gauge, rebar gauge, and pressure gauge are installed on the main stress-bearing parts of the building. The number of sensors at each stress-bearing part is not less than two and they are distributed on different sides. The strain gauge, axial force gauge, rebar gauge, and pressure gauge are all connected to the data center processing unit through a data transmission device.

[0010] As described above, the structural stress data acquisition device for civil engineering of this utility model has the following beneficial effects: This utility model, by passing a screw through the second fixing member and threadedly connecting it to the second fixing member, can firmly fix the tube body inside the first fixing member, thus allowing the tube body to be detachably installed inside the first and second fixing members. During storage, the strain gauge can be disassembled and stored, avoiding the strain gauge occupying a large space and facilitating its use by personnel. Furthermore, the protective shell in this utility model can prevent the strain gauge assembly from being easily affected by electromagnetic interference from external environmental mirrors, thereby improving the measurement accuracy of the strain gauge. Additionally, the shock-absorbing spring in this utility model provides a shock-absorbing effect, not only ensuring the service life of the strain gauge but also improving its measurement accuracy. Therefore, this utility model can not only detect structural stress but also has high detection sensitivity, thus facilitating its promotion and use. Attached Figure Description

[0011] Figure 1 This is a front view schematic diagram of the structural stress data acquisition device for civil engineering disclosed in this utility model;

[0012] Figure 2 This is a front cross-sectional view of the structural stress data acquisition device for civil engineering disclosed in this utility model.

[0013] Figure 3 The structural stress data acquisition device for civil engineering disclosed in this utility model is as follows. Figure 2 An enlarged schematic diagram of point A in the middle;

[0014] Figure 4 This is a right-side schematic diagram of the structural stress data acquisition device for civil engineering disclosed in this utility model.

[0015] Figure 5 This is a block diagram of the overall structure of the structural stress data acquisition device for civil engineering disclosed in this utility model.

[0016] Figure 6 This is a block diagram of the overall structure of the structural stress data acquisition device for civil engineering disclosed in this utility model, including its various modules.

[0017] Component designation explanation

[0018] 1. Strain gauge; 2. Tube body; 3. Mounting assembly; 301. First fixing component; 302. Second fixing component; 303. Mounting plate; 4. Protective shell; 5. Connecting rod; 6. Contact plate; 7. Pressure plate; 8. Strain assembly; 9. Fixing plate; 10. Measuring circuit; 11. Shock-absorbing spring; 12. Fixing block; 13. Bolt; 14. Screw; 15. Connecting plate; 16. Mounting hole. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Please see Figures 1 to 4This utility model provides a structural stress data acquisition device for civil engineering, including a strain gauge 1. The strain gauge 1 includes a tube body 2 and mounting components 3 installed at both ends of the tube body 2. A protective shell 4 is installed on the outer surface of the tube body 2 between the two mounting components 3. A connecting rod 5 is inserted inside the protective shell 4. One end of the connecting rod 5 is connected to a contact plate 6, and the other end of the connecting rod 5 passes through the protective shell 4 and the tube body 2 and is connected to a pressure plate 7 located inside the tube body 2. The bottom side of the pressure plate 7 is in contact with a strain component 8. The strain component 8 is electrically connected to a measuring circuit 10 installed inside the tube body 2 via a wire. Two connecting plates 15 are installed inside the tube body 2 and are slidably connected to the pressure plate 7. A fixing plate 9 is also installed between the two connecting plates 15 inside the tube body 2. The measuring circuit 10 is installed inside the fixing plate 9. In this embodiment, the strain component 8 is a strain gauge. The protective shell 4 can make the strain component 8 less susceptible to electromagnetic interference from external environmental mirrors, thereby improving the measurement accuracy of the strain gauge 1.

[0021] like Figure 2 and Figure 3 It can be seen that a damping spring 11 is installed on the outer surface of the connecting rod 5 and located inside the protective shell 4. One end of the damping spring 11 is connected to the protective shell 4, and the other end of the damping spring 11 is installed on the tube body 2. The damping spring 11 plays a role in damping, which not only ensures the service life of the strain gauge 1, but also improves the measurement accuracy of the strain gauge 1.

[0022] exist Figure 4 In the mounting assembly 3, a first fixing member 301 and a second fixing member 302 movably connected to the first fixing member 301 are included. The first fixing member 301 has a groove matching the shape of the tube body 2. A screw 14 is threaded into the second fixing member 302. The screw 14 passes through the second fixing member 302 and contacts the tube body 2. By passing through the second fixing member 302 and being threaded into it, the tube body 2 can be firmly fixed within the first fixing member 301. This allows the tube body 2 to be detachably installed on both the first fixing member 301 and the second fixing member 302. Within 01, the strain gauge 1 can be disassembled and stored during storage, avoiding the strain gauge 1 occupying a large space and making it convenient for staff to use; both the first fixing member 301 and the second fixing member 302 are equipped with fixing blocks 12, and the two fixing blocks 12 are connected by bolts 13. By moving the fixing block 12 on the second fixing member 302, the second fixing member 302 can be rotated clockwise, so that the tube body 1 can be placed in the groove; the first fixing member 301 is connected to the mounting plate 303 through the connecting plate 15, and the mounting plate 303 has two mounting holes 16.

[0023] Please see Figure 5 and Figure 6It also includes axial force gauges, rebar gauges, and pressure gauges. These gauges are installed on the main stress-bearing parts of the building, with at least two sensors at each stress-bearing part, distributed on different sides. All gauges are connected to the data center processing unit via a data transmission device. The data center processing unit is also connected to a remote alarm device and a stress monitoring query app. The stress data acquisition device transmits the collected structural stress data from the civil engineering project to the data center processing unit via the data transmission device. The data center processing unit analyzes and provides early warnings for the collected structural stress data. The remote alarm device is used to issue an alarm when the collected structural stress data is abnormal, thus promptly notifying staff.

[0024] The data transmission device includes, but is not limited to, one or more of the following: a WIFI module, a Bluetooth module, and a ZigBee wireless communication module. In this embodiment, a WIFI module is selected. The data center processing unit includes a data analysis module for analyzing the structural stress data of the civil engineering project collected by the stress data acquisition device, a data warning module for issuing a warning when the data analysis module detects abnormal data in the collected structural stress data of the civil engineering project, and a data storage module for storing the structural stress data of the civil engineering project collected by the stress data acquisition device and the data analysis results of the data analysis module. The data analysis module includes multi-parameter comparative analysis, multi-measuring point comparative analysis, cross-sectional analysis, and deep multi-measuring point analysis for analyzing the structural stress data of the civil engineering project collected by the stress data acquisition device.

[0025] The remote alarm device connects to the staff's equipment terminal via a wireless network. The remote alarm device is used to send SMS messages to the equipment terminal via the wireless network when the collected structural stress data of the civil engineering is abnormal. The stress monitoring query APP allows users to monitor the stress collection data in real time. The stress monitoring APP includes a permission information configuration module for configuring corresponding permission information for users in different positions and a data query module. The permission information configuration module can be used to configure corresponding permission information for users and to view the collected data of the project stress gauge 1 in real time.

[0026] In summary, this invention, by using screws 14 to pass through and threadedly connect with the second fixing member 302, can firmly fix the tube body 2 inside the first fixing member 301. This allows the tube body 2 to be detachably installed within both the first and second fixing members 301 and 302. During storage, the strain gauge 1 can be disassembled and stored, avoiding the strain gauge 1 occupying a large space and facilitating its use by staff. Furthermore, the protective shell 4 in this invention prevents the strain component 8 from being easily affected by electromagnetic interference from external environmental mirrors, thereby improving the accuracy of the strain gauge 1. The shock-absorbing spring 11 in this invention also provides shock absorption, ensuring the service life of the strain gauge 1 and improving its measurement accuracy. Therefore, this invention can not only detect structural stress with high sensitivity but also provide real-time alarms for abnormal data, enabling online consultation of monitoring data with high accuracy. It also alerts staff to make corrections through alarms, providing timely guidance and technical support for construction servo control. This monitoring technology can be fully applied in the control of structural construction processes.

[0027] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A structural stress data acquisition device for civil engineering, characterized in that: The device includes a strain gauge (1), which includes a tube (2) and mounting components (3) installed at both ends of the tube (2). A protective shell (4) is installed on the outer surface of the tube (2) between the two mounting components (3). A connecting rod (5) is inserted inside the protective shell (4). One end of the connecting rod (5) is connected to a contact plate (6). The other end of the connecting rod (5) passes through the protective shell (4) and the tube (2) and is connected to a pressure plate (7) inside the tube (2). The bottom side of the pressure plate (7) is in contact with the strain assembly. The strain assembly (8) is electrically connected to a measuring circuit (10) installed inside the tube (2) via a wire. A damping spring (11) is inserted on the outer surface of the connecting rod (5) inside the protective shell (4). One end of the damping spring (11) is connected to the protective shell (4), and the other end of the damping spring (11) is installed on the tube (2).

2. The structural stress data acquisition device for civil engineering according to claim 1, characterized in that: Two connecting plates (15) that are slidably connected to the pressure plate (7) are installed inside the tube body (2). A fixing plate (9) installed inside the tube body (2) is also provided between the two connecting plates (15). The measuring circuit (10) is installed inside the fixing plate (9).

3. The structural stress data acquisition device for civil engineering according to claim 1, characterized in that: The mounting assembly (3) includes a first fixing member (301) and a second fixing member (302) movably connected to the first fixing member (301). The first fixing member (301) has a groove that matches the shape of the tube body (2). The second fixing member (302) is threaded with a screw (14). The screw (14) passes through the second fixing member (302) and contacts the tube body (2).

4. The structural stress data acquisition device for civil engineering according to claim 3, characterized in that: The first fixing member (301) and the second fixing member (302) are each equipped with a fixing block (12), and the two fixing blocks (12) are connected by bolts (13). The first fixing member (301) is connected to a mounting plate (303) through a connecting plate (15), and the mounting plate (303) has two mounting holes (16).

5. A structural stress data acquisition device for civil engineering according to claim 1, characterized in that: It also includes axial force gauges, rebar gauges and pressure gauges. When in use, the strain gauges (1), axial force gauges, rebar gauges and pressure gauges are installed on the main stress-bearing parts of the building. The number of sensors at each stress-bearing part is not less than two and they are distributed on different sides. The strain gauges (1), axial force gauges, rebar gauges and pressure gauges are all connected to the data center processing unit through a data transmission device.

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