Strain monitoring device for steel structure weak point

Abstract

The utility model discloses a strain monitoring device for a steel structure weak point, and relates to the technical field of steel structure strain monitoring. The device comprises a steel truss, a first mounting frame is mounted on one side of the steel truss, a second mounting frame is mounted on the side, away from the first mounting frame, of the steel truss, and first connecting blocks are fixedly connected to the four corners of the first mounting frame. The monitoring device is provided with the connecting assemblies and the reinforcing parts, when a displacement sensor and a strain force sensor have faults and need to be overhauled or the position of the monitoring device needs to be replaced, the reinforcing parts are manually extruded, then the connecting assemblies are rotated to operate, and connection between the multiple first connecting blocks and the multiple second connecting blocks can be rapidly released; the first mounting rack and the second mounting rack are taken down to be separated from the steel truss, so that the displacement sensor and the strain force sensor can be replaced and maintained or the monitoring position can be replaced without carrying any tool, and the cost, time and difficulty of later operation and maintenance are greatly reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel structure strain monitoring, in particular to a strain monitoring device for weak points of a steel structure. BACKGROUND

[0002] With the rapid economic development and social progress, more and more large-span bridges and super high-rise buildings are being built, however, these steel structure facilities are easily damaged by fatigue and cracks due to the influence of natural environment and self-gravity and other factors, which brings great threat to the safety of buildings.

[0003] In order to ensure the safe and stable operation of these infrastructures, a structure health monitoring system becomes an indispensable tool, at present, a variety of monitoring systems based on sensor networks have been developed in this field, the data collected by sensors arranged at different positions are used to evaluate the structure state, by monitoring the strain of weak points, potential structure problems can be found in time, structure failure or collapse can be prevented, and personnel and property safety can be ensured.

[0004] At present, the devices for monitoring the strain of weak points of steel structures on the market usually use common sensors such as piezoelectric ceramic sensors and grating sensors for monitoring, and then the sensors are fixed at the welding position, connecting position or other positions of roof trusses or steel columns, and the existing sensors are usually fixed by using various bolt connections or welding methods during installation, which makes it necessary to carry various tools to disassemble the sensors when the sensors fail, greatly increasing the cost, time and difficulty of later operation and maintenance, therefore, the application provides a strain monitoring device for weak points of a steel structure. CONTENT OF THE INVENTION

[0005] The application aims to solve the problem that when the sensor fails, various tools need to be carried to disassemble the sensor, which greatly increases the cost, time and difficulty of later operation and maintenance, and provides a strain monitoring device for weak points of a steel structure.

[0006] In order to achieve the above-mentioned purpose, the application specifically adopts the following technical scheme:

[0007] A strain monitoring device for weak points of a steel structure, comprising a steel truss, a mounting frame one is installed on one side of the steel truss, a mounting frame two is installed on the side of the steel truss away from the mounting frame one, a connecting block one is fixedly connected to each corner of the mounting frame one, a connecting block two is fixedly connected to each corner of the mounting frame two, a displacement sensor is fixedly connected to one side of the mounting frame one, a strain force sensor is fixedly connected to one side of the mounting frame two, and a connecting assembly is installed in each of the connecting blocks one.

[0008] By adopting the technical scheme, the mounting frame one and the mounting frame two are attached to the positions on both sides of the weak point, so that the displacement sensor and the strain force sensor are closely attached to the weak point, then the connecting assembly in the connecting block one is screwed to fix the mounting frame one and the mounting frame two at the weak point on the steel truss, through the cooperation of the displacement sensor and the strain force sensor, whether the weak point of the steel truss appears strain condition can be accurately identified, in addition, when the displacement sensor and the strain force sensor need to be repaired or the monitoring device position needs to be replaced, the connecting assembly is only needed to be reversely operated, so that the mounting frame one and the mounting frame two can be quickly separated from the steel truss, thereby the displacement sensor and the strain force sensor can be replaced and repaired or the monitoring position can be replaced without carrying any tool, the cost, time and difficulty of later operation and maintenance are greatly reduced.

[0009] Further, the connecting assembly comprises cavities formed in the connecting blocks one, a screw rod is rotatably connected in each of the connecting blocks one, one end of the screw rod is fixedly connected with a knob, an L-shaped block is threadedly connected with the screw rod, the upper and lower sides of the L-shaped block are attached to the inner walls of the cavities, one end of each of the connecting blocks two is formed with a connecting groove, the connecting groove has the same shape and size as one end of the L-shaped block, and one end of the L-shaped block is provided with a reinforcing piece.

[0010] By adopting the technical scheme, the L-shaped block and the connecting groove can preliminarily fix the connecting blocks one and the connecting blocks two to stably fix the mounting frame one and the mounting frame two at the weak point of the steel truss.

[0011] Further, the outer wall of the knob is uniformly fixedly connected with a plurality of poking blocks.

[0012] By adopting the technical scheme, the plurality of poking blocks can effectively improve the efficiency of screwing and more conveniently rotate the knob.

[0013] Further, the reinforcing piece comprises a groove formed on one side of the L-shaped block, a spring is fixedly connected in the groove, a clamping block is slidably connected in the groove, one end of the spring is fixedly connected with one end of the clamping block, and one side of each of the connecting grooves is formed with a clamping groove.

[0014] By adopting the technical scheme, the clamping block is pushed into the clamping groove by the spring, so that the mounting frame one and the mounting frame two are completely fixed in position through the cooperation of the clamping block and the clamping groove.

[0015] Further, one end of the clamping block away from the spring is arc-shaped.

[0016] By adopting the technical scheme, the arc-shaped design of one end of the clamping block can make the clamping block enter the connecting groove more conveniently, so as to avoid jamming.

[0017] Further, the inside of the mounting frame one and the mounting frame two are fixedly connected with a storage battery, and the inside of the mounting frame one and the mounting frame two are fixedly connected with a control module, and the strain sensor and the cavity are electrically connected with the control module.

[0018] By adopting the technical scheme, when the strain occurs, the monitoring information is uploaded to the control module in the first time, and then the control module notifies the staff in time to check after receiving the information.

[0019] Further, the two sides of the mounting frame one and the mounting frame two are provided with heat dissipation holes.

[0020] By adopting the technical scheme, the heat dissipation holes arranged on the two sides can effectively improve the ventilation and heat dissipation effect of the inside of the mounting frame one and the mounting frame two, so that the inside of the mounting frame one and the mounting frame two can continuously maintain a suitable temperature.

[0021] Further, the two sides of the mounting frame one and the mounting frame two are fixedly connected with a rain shelter, and the two sides of the inside of the mounting frame one and the mounting frame two are fixedly connected with a dust screen.

[0022] By adopting the technical scheme, the dust screen can also effectively reduce the dust entering the inside of the mounting frame one and the mounting frame two, and when the rainy and snowy weather comes, the rain shelter can effectively block the rain and snow, so as to prevent the rain and snow from entering the inside of the mounting frame one and the mounting frame two.

[0023] In summary, the present application has at least one of the following beneficial effects:

[0024] 1. The present application is provided with a connecting assembly and a reinforcing piece. When the displacement sensor and the strain sensor have a fault problem and need to be repaired or the monitoring device needs to be replaced, only the reinforcing piece needs to be manually squeezed, and then the connecting assembly is rotated to disconnect the connection between the first connecting block and the second connecting block, so that the mounting frame one and the mounting frame two can be separated from the steel truss. In this way, without carrying any tools, the displacement sensor and the strain sensor can be replaced and repaired or the monitoring position can be replaced, which greatly reduces the cost, time and difficulty of later operation and maintenance.

[0025] 2. The application is provided with displacement sensors and strain force sensors, by tightly adhering the displacement sensors and strain force sensors to the weak points respectively, according to the mutual cooperation of the two, the weak points of the steel truss can be accurately identified whether the strain condition occurs, and when the strain condition is monitored, the monitoring information will be uploaded to the control module in the first time, then the control module will timely inform the staff to check after receiving the information, so that the monitoring accuracy is greatly improved, and the effective monitoring of the weak points is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the internal structure of the mounting frame one and the mounting frame two.

[0027] Figure 2 is a schematic diagram of the internal structure of the mounting frame one and the mounting frame two.

[0028] Figure 3 is a schematic diagram of the connection structure of the mounting frame one and the mounting frame two.

[0029] Figure 4 is a schematic diagram of the internal structure of the mounting frame one and the mounting frame two.

[0030] BRIEF DESCRIPTION OF DRAWINGS:

[0031] 1, steel truss; 2, mounting frame one; 3, mounting frame two; 4, connecting block one; 5, connecting block two; 6, displacement sensor; 7, strain force sensor; 8, cavity; 9, lead screw; 10, knob; 11, knob; 12, L-shaped block; 13, groove; 14, spring; 15, clamping block; 16, connecting groove; 17, clamping groove; 18, battery; 19, control module; 20, heat dissipation hole; 21, rain shelter; 22, dust screen. DETAILED DESCRIPTION

[0032] The application will be further described in detail below in combination with the accompanying drawings. Figure 1 —4.

[0033] The application discloses a strain monitoring device for weak points of steel structure.

[0034] Refer to Figure 1 and Figure 2The application discloses a strain monitoring device for weak points of a steel structure, which comprises a steel truss 1, a mounting rack one 2 installed on one side of the steel truss 1, a mounting rack two 3 installed on the side, away from the mounting rack one 2, of the steel truss 1, a connecting block one 4 fixedly connected to each corner of the mounting rack one 2, a connecting block two 5 fixedly connected to each corner of the mounting rack two 3, a displacement sensor 6 fixedly connected to one side of the mounting rack one 2, a strain force sensor 7 fixedly connected to one side of the mounting rack two 3, a connecting assembly installed in each of the connecting block ones 4, a storage battery 18 fixedly connected to the inside of the mounting rack one 2 and the mounting rack two 3, a control module 19 fixedly connected to the inside of the mounting rack one 2 and the mounting rack two 3, and the strain force sensor 7 and the cavity 8 are electrically connected with the control module 19.

[0035] In use, first, find the weak points, such as welding points, connecting points or intermediate points, on the steel truss 1 that need to be monitored, then respectively take out the mounting rack one 2 and the mounting rack two 3 and attach them to the positions on both sides of the weak points, so that the displacement sensor 6 and the strain force sensor 7 are closely attached to the weak points, then twist the connecting assemblies in the connecting block ones 4 to quickly connect the connecting block ones 4 with the connecting block twos 5, so that the mounting rack one 2 and the mounting rack two 3 can be fixed at the weak points on the steel truss 1, through the cooperation of the displacement sensor 6 and the strain force sensor 7, the strain condition of the weak points of the steel truss 1 can be accurately identified, when the strain condition is monitored, the monitoring information is uploaded to the control module 19 in the first time, then the control module 19 timely informs the staff to check after receiving the information, so that the monitoring precision is greatly improved, the effective monitoring of the weak points is realized, in addition, when the displacement sensor 6 and the strain force sensor 7 need to be repaired or the monitoring device position needs to be replaced, only need to reverse the connecting assemblies, so that the connection between the connecting block ones 4 and the connecting block twos 5 can be quickly released, the mounting rack one 2 and the mounting rack two 3 are taken off and separated from the steel truss 1, so that the displacement sensor 6 and the strain force sensor 7 can be replaced and repaired or the monitoring position can be replaced without carrying any tool, the cost, time and difficulty of the later operation and maintenance are greatly reduced.

[0036] Referring to Figure 3 and Figure 4 The connecting assembly comprises a cavity 8 formed in the connecting block one 4, a lead screw 9 penetratingly and rotatably connected to the inside of the connecting block one 4, a knob 10 fixedly connected to one end of the lead screw 9, an L-shaped block 12 threadedly connected to the lead screw 9, the upper and lower sides of the L-shaped block 12 being attached to the inner wall of the cavity 8, a connecting groove 16 formed in one end of the connecting block two 5, the shape and size of the connecting groove 16 being consistent with one end of the L-shaped block 12, a reinforcing piece arranged at one end of the L-shaped block 12, and a plurality of push blocks 11 uniformly fixedly connected to the outer wall of the knob 10.

[0037] Second, the reinforcing member includes a groove 13 on one side of the L-shaped block 12, the inside of the groove 13 is fixedly connected with a spring 14, the inside of the groove 13 is slidably connected with a clamping block 15, one end of the spring 14 is fixedly connected with one end of the clamping block 15, a plurality of connecting grooves 16 are provided with clamping grooves 17 on one side, and the end of the clamping block 15 away from the spring 14 is arc-shaped.

[0038] In use, first, the knob 10 is twisted to drive the screw rod 9 to rotate, and in the process of twisting, the plurality of push blocks 11 can effectively improve the efficiency of twisting, and the knob 10 is more conveniently rotated, and with the continuous rotation of the screw rod 9, the L-shaped block 12 is guided by the cavity 8 to slide on the screw rod 9, so that one end of the L-shaped block 12 gradually enters the inside of the connecting groove 16, and when the one end of the L-shaped block 12 enters the inside of the connecting groove 16, the arc-shaped end of the clamping block 15 is pressed by the inner wall of the connecting groove 16, so that the clamping block 15 is pressed into the inside of the groove 13, and when the L-shaped block 12 completely enters the inside of the connecting groove 16, the plurality of connecting blocks one 4 and the plurality of connecting blocks two 5 are preliminarily fixed through the cooperation of the L-shaped block 12 and the connecting groove 16, so that the mounting rack one 2 and the mounting rack two 3 are stably arranged at the weak point of the steel truss 1, and then because the L-shaped block 12 completely enters the connecting groove 16, the groove 13 and the clamping groove 17 are on the same horizontal line, and at this time, one end of the clamping block 15 is no longer pressed by the inner wall of the connecting groove 16, and is pushed into the clamping groove 17 according to the rebound of the spring 14, so that the clamping block 15 and the clamping groove 17 are cooperated to completely fix the positions of the mounting rack one 2 and the mounting rack two 3;

[0039] In addition, when the displacement sensor 6 and the strain force sensor 7 need to be repaired or the monitoring device needs to be replaced, the arc-shaped end of the clamping block 15 is manually pressed to push it into the inside of the groove 13, then the knob 10 is reversely rotated to drive the screw rod 9 to reversely rotate, so that the L-shaped block 12 is gradually pulled out from the connecting groove 16, and the connection between the plurality of connecting blocks one 4 and the connecting blocks two 5 is quickly released, so that the mounting rack one 2 and the mounting rack two 3 are separated from the steel truss 1.

[0040] Referring to Figure 1 and Figure 2 The two sides of the mounting rack one 2 and the mounting rack two 3 are provided with heat dissipation holes 20, the two sides of the mounting rack one 2 and the mounting rack two 3 are fixedly connected with rainproof racks 21, and the two sides of the inside of the mounting rack one 2 and the mounting rack two 3 are fixedly connected with dust screens 22.

[0041] In use, the heat dissipation holes 20 arranged on both sides can effectively improve the ventilation and heat dissipation effect inside the mounting frame one 2 and the mounting frame two 3, so that the inside of the mounting frame one 2 and the mounting frame two 3 can continuously maintain a suitable temperature, so as to prevent the monitoring data from fluctuating due to high temperature inside the mounting frame one 2 and the mounting frame two 3. Meanwhile, the dust screen 22 can effectively reduce the dust entering the mounting frame one 2 and the mounting frame two 3, and the rain shelter 21 can effectively block the rain and snow from entering the mounting frame one 2 and the mounting frame two 3 in rainy and snowy weather.

[0042] The implementation principle of the strain monitoring device for the weak point of the steel structure in the embodiment is as follows: in use, first, find the weak point, such as the welding position, the connecting position or the intermediate position, on the steel truss 1 that needs to be monitored, then attach the mounting frame one 2 and the mounting frame two 3 to the positions on both sides of the weak point respectively, so that the displacement sensor 6 and the strain force sensor 7 are closely attached to the weak point respectively, then rotate the screw rod 9 by turning the knob 10, and in the process of turning, the plurality of push blocks 11 can effectively improve the efficiency of turning and make it more convenient to rotate the knob 10. With the continuous rotation of the screw rod 9, the L-shaped block 12 slides on the screw rod 9 guided by the cavity 8, so that one end of the L-shaped block 12 gradually enters the inside of the connecting groove 16. When the one end of the L-shaped block 12 enters the inside of the connecting groove 16, the arc-shaped end of the clamping block 15 is extruded by the inner wall of the connecting groove 16, so that the clamping block 15 is extruded into the recess 13. When the L-shaped block 12 completely enters the connecting groove 16, the recess 13 and the clamping groove 17 are on the same horizontal line, and at this time, one end of the clamping block 15 is extruded by the inner wall of the connecting groove 16, so that the clamping block 15 is pushed into the clamping groove 17 according to the rebound of the spring 14. In this way, the position of the mounting frame one 2 and the mounting frame two 3 is completely fixed through the cooperation of the clamping block 15 and the clamping groove 17, so that the mounting frame one 2 and the mounting frame two 3 can be fixed at the weak point on the steel truss 1. Through the cooperation of the displacement sensor 6 and the strain force sensor 7, whether the weak point of the steel truss 1 appears strain can be accurately identified. When the strain appears, the monitoring information is uploaded to the control module 19 in the first time, and then the control module 19 notifies the staff in time to check after receiving the information, so as to greatly improve the monitoring accuracy and realize the effective monitoring of the weak point.

[0043] In addition, when the displacement sensor 6 and the strain force sensor 7 have a fault problem that needs to be repaired or the monitoring position needs to be replaced, only need to manually extrude the arc-shaped end of the clamping block 15 to push it into the inside of the groove 13, and then reversely rotate the knob 10 to drive the screw rod 9 to reversely rotate, so that the L-shaped block 12 is gradually pulled out from the connecting groove 16, that is, the connection between the plurality of connecting blocks one 4 and the connecting blocks two 5 is quickly released, so that the mounting frame one 2 and the mounting frame two 3 are separated from the steel truss 1, thereby the displacement sensor 6 and the strain force sensor 7 can be replaced and repaired or the monitoring position can be replaced without carrying any tool, the cost, time and difficulty of the later operation and maintenance are greatly reduced, and through the heat dissipation holes 20 arranged on both sides, the ventilation and heat dissipation effect inside the mounting frame one 2 and the mounting frame two 3 can be effectively improved, so that the inside of the mounting frame one 2 and the mounting frame two 3 can continuously maintain a suitable temperature, so that the monitoring data is prevented from fluctuating due to the high temperature inside the mounting frame one 2 and the mounting frame two 3, and through the dust screen 22, the dust entering the inside of the mounting frame one 2 and the mounting frame two 3 can be effectively reduced, and when the rainy and snowy weather comes, the rain and snow can be effectively blocked through the rain shelter 21, so that the rain and snow entering the inside of the mounting frame one 2 and the mounting frame two 3 is prevented.

Claims

1. A strain monitoring device for weak points in steel structures, comprising a steel truss (1), characterized in that: A mounting bracket 1 (2) is installed on one side of the steel truss (1), and a mounting bracket 2 (3) is installed on the side of the steel truss (1) away from the mounting bracket 1 (2). A connecting block 1 (4) is fixedly connected to each of the four corners of the mounting bracket 1 (2), and a connecting block 2 (5) is fixedly connected to each of the four corners of the mounting bracket 2 (3). A displacement sensor (6) is fixedly connected to one side of the mounting bracket 1 (2), and a strain sensor (7) is fixedly connected to one side of the mounting bracket 2 (3). Connecting components are installed inside each of the multiple connecting blocks 1 (4).

2. The strain monitoring device for weak points in steel structures according to claim 1, characterized in that: The connecting assembly includes cavities (8) formed inside multiple connecting blocks (4). Each of the multiple connecting blocks (4) is rotatably connected to a lead screw (9). One end of the lead screw (9) is fixedly connected to a knob (10). An L-shaped block (12) is threaded onto the lead screw (9). The upper and lower sides of the L-shaped block (12) are in contact with the inner wall of the cavity (8). One end of each of the multiple connecting blocks (5) is provided with a connecting groove (16). The shape and size of the connecting groove (16) are the same as one end of the L-shaped block (12). One end of the L-shaped block (12) is provided with a reinforcing member.

3. The strain monitoring device for weak points in steel structures according to claim 2, characterized in that: Multiple toggle blocks (11) are evenly fixedly connected to the outer wall of the knob (10).

4. The strain monitoring device for weak points in steel structures according to claim 2, characterized in that: The reinforcing member includes a groove (13) on one side of the L-shaped block (12), a spring (14) is fixedly connected inside the groove (13), a locking block (15) is slidably connected inside the groove (13), one end of the spring (14) is fixedly connected to one end of the locking block (15), and a locking groove (17) is provided on one side of each of the multiple connecting grooves (16).

5. A strain monitoring device for weak points in steel structures according to claim 4, characterized in that: The end of the card block (15) away from the spring (14) is arc-shaped.

6. A strain monitoring device for weak points in steel structures according to claim 1, characterized in that: A battery (18) is fixedly connected inside both mounting bracket one (2) and mounting bracket two (3). A control module (19) is fixedly connected inside both mounting bracket one (2) and mounting bracket two (3). The strain sensor (7) and the cavity (8) are electrically connected to the control module (19).

7. A strain monitoring device for weak points in steel structures according to claim 1, characterized in that: Both sides of the mounting bracket one (2) and mounting bracket two (3) are provided with heat dissipation holes (20).

8. A strain monitoring device for weak points in steel structures according to claim 1, characterized in that: Both sides of the first mounting bracket (2) and the second mounting bracket (3) are fixedly connected with rain shields (21), and both sides of the inside of the first mounting bracket (2) and the second mounting bracket (3) are fixedly connected with dustproof nets (22).

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