An intelligent detection process for steel beam structure

Abstract

The present invention relates to an intelligent inspection process for steel beam structures. A steel beam inspection device is used to detect the bending sag L and curvature K of a steel beam. The device comprises a first movable leg, a second movable leg, a first laser ranging probe, a second laser ranging probe, an absolute rotary photoelectric encoder, and a controller. The absolute rotary photoelectric encoder is fixed to the first end of the first movable leg, and the rotary axis of the absolute rotary photoelectric encoder passes through the first movable leg and is connected to the first end of the second movable leg. The first laser ranging probe is located at the second end of the first movable leg; the second laser ranging probe is located at the second end of the second movable leg. The device measures the distance r0 from the steel beam inspection device to both ends of the steel beam and the straight-line distance h1 from the steel beam inspection device to the steel beam, and calculates the values ​​of H and K. If L > 10 mm or #imgabs0#, the controller issues a steel beam maintenance prompt, which is displayed on a touch screen. The device has the advantages of a simple structure and ease of operation.

Description

Technical Field

[0001] The invention relates to an intelligent detection process for a steel beam structure. Background Art

[0002] Steel beams (also known as I-beams) are one of the main components in steel structures. The quality of steel beams directly affects the safety of the building and may even lead to the collapse of the steel structure. The curvature of steel beams is one of the important indicators of steel beam quality. The existing steel structure quality acceptance standard GB50205-2001 indicates that curvature is allowed. Generally, the curvature is not greater than L / 1000 (L is the bending height), and L is not greater than 10mm. Figure 1 As shown, during use, the steel beam 100 bears weight, which causes the curvature of the steel beam 100 to change. If the curvature of the steel beam 100 exceeds the standard value, the probability of the steel beam 100 breaking is greatly increased, directly endangering the safety of the building.

[0003] For general civil steel structures, the use of professional inspection agencies and total stations to measure the curvature of steel beams is rarely practiced. This is primarily due to the fact that the average user lacks access to these agencies. Furthermore, the cost of these inspections is high, with total stations currently costing upwards of 7,000 yuan. This makes purchasing a total station in China prohibitive, and the user lacks the necessary skills to operate one. Consequently, few civil steel structures in China regularly inspect their steel beams.

[0004] Therefore, it is necessary to design an intelligent detection process for steel beam structures that is easy to operate, simple in structure, and inexpensive. Summary of the Invention

[0005] Therefore, in order to solve the above problems, the present invention proposes an intelligent detection process for steel beam structure, which is used to detect the bending sagitta and curvature of the steel beam. The process has a simple structure and is easy to operate.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An intelligent detection process for steel beam structures, for detecting the bending sag L and curvature K of steel beams, comprises the following steps:

[0008] S1. Install the steel beam detection device;

[0009] The steel beam detection device includes a first movable foot, a second movable foot, a first laser ranging probe, a second laser ranging probe, an absolute rotary photoelectric encoder, a touch screen, and a controller;

[0010] The absolute rotary photoelectric encoder is fixedly arranged at the first end of the first movable foot, and the rotating shaft of the absolute rotary photoelectric encoder passes through the first movable foot and is fixedly connected to the first end of the second movable foot;

[0011] The first laser ranging probe is arranged at the second end of the first movable foot;

[0012] The second laser ranging probe is arranged at the second end of the second movable foot;

[0013] The first laser ranging probe and the distance from the first laser ranging probe to the rotation axis center of the absolute rotary photoelectric encoder are both d0;

[0014] The first laser ranging probe, the second laser ranging probe, the absolute rotary photoelectric encoder, and the touch screen are electrically connected to the controller respectively;

[0015] When the second movable foot is retracted onto the first movable foot, the absolute rotary photoelectric encoder detects that the angle between the first movable foot and the second movable foot is 0°;

[0016] S2, select the detection position;

[0017] The first movable leg and the second movable leg of the steel beam detection device are unfolded, and the absolute rotary photoelectric encoder detects the angle θ between the first movable leg and the second movable leg and transmits it to the controller;

[0018] When θ>0°, the controller controls the first laser ranging probe and the second laser ranging probe to start measuring distance;

[0019] Aim the laser beam emitted by the first laser ranging probe at the first end of the steel beam, and measure the distance data R from the first laser ranging probe to the first end of the steel beam. 10 , transmitted to the controller; and the laser beam emitted by the second laser ranging probe is aimed at the second end of the steel beam, and the distance data R from the second laser ranging probe to the second end of the steel beam is measured. 20 , passed to the controller;

[0020] The controller controls the touch screen to display data R 10 and data R 20 ;

[0021] Move the steel beam detection device, when R 10 =R 20 , place the steel beam detection device stably;

[0022] Enter data r0 through the touch screen, r0 = R 10 =R 20 ;

[0023] S3. Detect the straight-line distance from the steel beam detection device to the steel beam:

[0024] Adjust the first movable foot to be parallel to the horizontal plane, adjust the angle θ between the second movable foot and the first movable foot to be 90°, and use the second laser ranging probe to measure the straight-line distance data h1 from the second laser ranging probe to the steel beam;

[0025] Enter data h1 through the touch screen;

[0026] S4. The controller calculates the bending height L of the steel beam as:

[0027]

[0028] If L>10mm, the controller issues a first steel beam maintenance prompt message and displays it on the touch screen, wherein the first steel beam maintenance prompt message includes the value of the bending sag L;

[0029] If L≤10mm, proceed to step S5;

[0030] S5. The curvature K of the steel beam is:

[0031]

[0032] in,

[0033] like The controller issues a second steel beam maintenance prompt message and displays it on the touch screen, wherein the second steel beam maintenance prompt message includes a value of the curvature K;

[0034] like The controller determines that the curvature of the steel beam meets the requirements, and the touch screen displays the qualified information of the steel beam.

[0035] Furthermore, the controller includes a housing disposed on the first movable foot and an integrated circuit board disposed inside the housing;

[0036] The integrated circuit board is integrated with an MCU processor, a first analog-to-digital converter, a second analog-to-digital converter and a battery;

[0037] The battery is electrically connected to the power supply terminal of the MCU processor, and the touch screen, the digital output terminal of the first analog-to-digital converter, the digital output terminal of the second analog-to-digital converter, and the output terminal of the absolute rotary photoelectric encoder are electrically connected to the MCU processor respectively;

[0038] The first laser ranging probe is electrically connected to the analog input terminal of the first analog-to-digital converter;

[0039] The second laser ranging probe is electrically connected to the analog input terminal of the second analog-to-digital converter.

[0040] Furthermore, the touch screen is provided on the housing; the housing is also provided with a buzzer;

[0041] The buzzer is electrically connected to the MCU processor;

[0042] If L>10mm or The MCU processor controls the buzzer to sound an alarm.

[0043] By adopting the above technical solution, the beneficial effects of the present invention are:

[0044] The intelligent detection process of steel beam structure is simple to operate. When in use, a person can hold the steel beam detection device and aim the laser beam emitted by the first laser ranging probe at the first end of the steel beam to measure the distance data R from the first laser ranging probe to the first end of the steel beam. 10 ; and align the laser beam emitted by the second laser ranging probe with the second end of the steel beam, and measure the distance data R from the second laser ranging probe to the second end of the steel beam 20 ; By moving the position until R 10 =R 20 = r0, stably install the steel beam detection device at this position, and then use the second laser ranging probe to detect the straight-line distance data h1 from the second laser ranging probe to the steel beam. The controller calculates the bending height L and curvature K of the steel beam based on r0 and h1, L>10mm or The MCU processor then issues a steel beam maintenance reminder message, which is displayed on the touch screen and a buzzer sounds simultaneously, reminding the user to promptly maintain the inspected steel beam. The steel beam inspection device has a simple structure and is inexpensive. This intelligent steel beam structure inspection process represents a significant improvement over existing technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural diagram of the load-bearing bending of a steel beam.

[0046] Figure 2 It is a schematic diagram of the overall structure of the steel beam detection device of the present invention.

[0047] Figure 3 It is a side schematic diagram of the steel beam detection device of the present invention.

[0048] Figure 4 It is a structural diagram of the distance between the steel beam detection device and the two ends of the steel beam.

[0049] Figure 5 It is a structural diagram of the straight-line distance between the steel beam detection device and the steel beam.

[0050] Figure 6 It is a structural diagram of the controller.

[0051] Figure 7 It is a circuit connection block diagram of the present invention. DETAILED DESCRIPTION

[0052] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0053] refer to Figure 2-Figure 7 This embodiment provides an intelligent detection process for steel beam structures, which is used to detect the bending height L and curvature K of steel beams, including the following steps:

[0054] S1. Install the steel beam detection device;

[0055] like Figure 1 and Figure 2 Therefore, the steel beam detection device includes a first movable foot 1, a second movable foot 2, a first laser ranging probe 3, a second laser ranging probe 4, an absolute rotary photoelectric encoder 5, a controller 6, a touch screen 7, and a speaker 8.

[0056] The absolute rotary photoelectric encoder 5 is fixedly arranged at the first end of the first movable foot 1, and the rotating shaft 50 of the absolute rotary photoelectric encoder 5 (the rotating shaft 50 is a structure inherent in the absolute rotary photoelectric encoder 5, and the present invention does not involve structural improvements of the absolute rotary photoelectric encoder 5) passes through the first movable foot 1 and is fixedly connected to the first end of the second movable foot 2.

[0057] The first laser ranging probe 3 is arranged at the second end of the first movable foot 1 .

[0058] The second laser ranging probe 4 is arranged at the second end of the second movable foot 2 .

[0059] It should be noted that both the first movable foot 1 and the second movable foot 2 have two ends. In this embodiment, the terms "first end" and "second end" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0060] The distances between the first laser ranging probe 3 and the first laser ranging probe 4 and the rotation axis 50 of the absolute rotary photoelectric encoder 5 are both d0.

[0061] The controller 6 includes a housing 60 disposed on the first movable foot 1 and an integrated circuit board (not shown in the figure) disposed inside the housing 60. Preferably, the touch screen 7 and the speaker 8 are disposed on the housing 60.

[0062] The integrated circuit board integrates an MCU processor 61 , a battery 62 , a first analog-to-digital converter 63 , and a second analog-to-digital converter 64 .

[0063] The first laser ranging probe 3, the second laser ranging probe 4, the absolute rotary photoelectric encoder 5, the touch screen 7, the speaker 8, the MCU processor 61, the battery 62, the first analog-to-digital converter 63, and the second analog-to-digital converter 64 are all existing electronic devices. It should be noted that those skilled in the art can fully reproduce the steel beam detection device disclosed in this patent application and achieve the same technical effects based on the above description and the accompanying drawings and through limited circuit connection experiments.

[0064] Specifically, the circuit connection method of the steel beam detection device is:

[0065] The battery 62 is electrically connected to the power supply end of the MCU processor 61 to power the MCU processor 61; the output end of the absolute rotary photoelectric encoder 5, the touch screen 7, the buzzer 8, the digital output end of the first analog-to-digital converter 63, the digital output end of the second analog-to-digital converter 64, and the memory 65 are electrically connected to the MCU processor 61 respectively.

[0066] The first laser ranging probe 3 is electrically connected to the analog input terminal of the first analog-to-digital converter 63 , and the analog signal output by the first laser ranging probe 3 is converted into a digital signal by the first analog-to-digital converter 63 and transmitted to the MCU processor 61 .

[0067] The second laser ranging probe 4 is electrically connected to the analog input terminal of the second analog-to-digital converter 64 , and the analog signal output by the second laser ranging probe 4 is converted into a digital signal by the second analog-to-digital converter 64 and transmitted to the MCU processor 61 .

[0068] Furthermore, it should be noted that when the second movable leg 2 is retracted onto the first movable leg 1 , the absolute rotary photoelectric encoder 5 detects that the angle between the first movable leg 1 and the second movable leg 2 is 0°.

[0069] S2, select the detection position;

[0070] like Figure 4 As shown, the first movable foot 1 and the second movable foot 2 of the steel beam detection device are unfolded, and the absolute rotary photoelectric encoder 5 detects the angle θ between the first movable foot 1 and the second movable foot 2 and transmits it to the controller 6.

[0071] If θ=0°, the controller 6 is in a standby state to save power.

[0072] When θ>0°, the controller 6 controls the first laser ranging probe 3 and the second laser ranging probe 4 to start measuring distance.

[0073] Specifically:

[0074] Aim the laser beam emitted by the first laser ranging probe 3 at the first end of the steel beam 100, and measure the distance data R from the first laser ranging probe 3 to the first end of the steel beam 100. 10 , transmitted to the MCU processor 61 of the controller 6; and the laser beam emitted by the second laser ranging probe 4 is aimed at the second end of the steel beam 100, and the distance data R from the second laser ranging probe 4 to the second end of the steel beam 100 is measured. 20 , passed to the MCU processor 61 of the controller 6.

[0075] It should be noted that the steel beam 100 has two ends. In this embodiment, the terms "first end" and "second end" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0076] The controller 6 controls the touch screen 7 to display data R 10 and data R 20 ;

[0077] Move the steel beam detection device, when R 10 =R 20 , the steel beam detection device should be placed stably or kept steady when held in hand.

[0078] Enter data r0 through the touch screen 7, r0=R 10 =R 20 .

[0079] S3, detecting the straight-line distance from the second laser ranging probe 4 of the steel beam detection device to the steel beam 100:

[0080] like Figure 5 As shown, the first movable foot 1 is adjusted to be parallel to the horizontal plane, the angle θ between the second movable foot 2 and the first movable foot 1 is 90°, and the second laser ranging probe 4 measures the straight-line distance data h1 from the second laser ranging probe 4 to the steel beam 100.

[0081] The data h1 is input into the MCU processor 61 via the touch screen 7 .

[0082] S4. The MCU processor 61 calculates the bending sagitta L of the steel beam 100 as:

[0083]

[0084] If L>10mm, the controller 6 issues a first steel beam maintenance reminder message which is displayed on the touch screen 7 and the buzzer 8 emits an alarm sound. The first steel beam maintenance reminder message at least includes the value of the bending height L.

[0085] If L≤10mm, proceed to step S5;

[0086] S5. The curvature K of the steel beam 100 is:

[0087]

[0088] in,

[0089] like Then the controller 6 issues a second steel beam maintenance reminder message which is displayed on the touch screen 7 and the buzzer 8 emits an alarm sound. The second steel beam maintenance reminder message at least includes the value of the curvature K;

[0090] like The controller 6 then determines that the curvature of the steel beam meets the requirements.

[0091] The steel beam detection device of the steel beam structure intelligent detection process has a simple structure and low cost. The steel beam structure intelligent detection process is a significant improvement over the existing technology.

[0092] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. An intelligent detection process for steel beam structures, used to detect the bending height L and curvature K of steel beams, characterized in that: The following steps are involved: S1. Install the steel beam detection device; The steel beam detection device includes a first movable foot, a second movable foot, a first laser ranging probe, a second laser ranging probe, an absolute rotary photoelectric encoder, a touch screen, and a controller; The absolute rotary photoelectric encoder is fixedly arranged at the first end of the first movable foot, and the rotating shaft of the absolute rotary photoelectric encoder passes through the first movable foot and is fixedly connected to the first end of the second movable foot; The first laser ranging probe is arranged at the second end of the first movable foot; The second laser ranging probe is arranged at the second end of the second movable foot; The first laser ranging probe and the distance from the first laser ranging probe to the rotation axis center of the absolute rotary photoelectric encoder are both d0; The first laser ranging probe, the second laser ranging probe, the absolute rotary photoelectric encoder, and the touch screen are electrically connected to the controller respectively; When the second movable foot is retracted onto the first movable foot, the absolute rotary photoelectric encoder detects that the angle between the first movable foot and the second movable foot is 0°; S2, select the detection position; The first movable leg and the second movable leg of the steel beam detection device are unfolded, and the absolute rotary photoelectric encoder detects the angle θ between the first movable leg and the second movable leg and transmits it to the controller; When θ>0°, the controller controls the first laser ranging probe and the second laser ranging probe to start measuring distance; Aim the laser beam emitted by the first laser ranging probe at the first end of the steel beam, and measure the distance data R from the first laser ranging probe to the first end of the steel beam. 10 , transmitted to the controller; and the laser beam emitted by the second laser ranging probe is aimed at the second end of the steel beam, and the distance data R from the second laser ranging probe to the second end of the steel beam is measured. 20 , passed to the controller; The controller controls the touch screen to display data R 10 and data R 20 ; Move the steel beam detection device and observe R 10 =R 20 , place the steel beam detection device stably; Enter data r0 through the touch screen, r0 = R 10 =R 20 ; S3. Detect the straight-line distance from the steel beam detection device to the steel beam: Adjust the first movable foot to be parallel to the horizontal plane, adjust the angle θ between the second movable foot and the first movable foot to be 90°, and use the second laser ranging probe to measure the straight-line distance data h1 from the second laser ranging probe to the steel beam; Enter data h1 through the touch screen; S4. The controller calculates the bending height L of the steel beam as: If L>10mm, the controller issues a first steel beam maintenance prompt message and displays it on the touch screen, wherein the first steel beam maintenance prompt message includes the value of the bending sag L; If L≤10mm, proceed to step S5; S5. The curvature K of the steel beam is: in, like The controller issues a second steel beam maintenance prompt message and displays it on the touch screen, wherein the second steel beam maintenance prompt message includes a value of the curvature K; like The controller determines that the curvature of the steel beam meets the requirements, and the touch screen displays the qualified information of the steel beam.

2. The intelligent detection process for steel beam structure according to claim 1, characterized in that: The controller includes a housing arranged on the first movable foot and an integrated circuit board arranged inside the housing; The integrated circuit board is integrated with an MCU processor, a first analog-to-digital converter, a second analog-to-digital converter and a battery; The battery is electrically connected to the power supply terminal of the MCU processor, and the touch screen, the digital output terminal of the first analog-to-digital converter, the digital output terminal of the second analog-to-digital converter, and the output terminal of the absolute rotary photoelectric encoder are electrically connected to the MCU processor respectively; The first laser ranging probe is electrically connected to the analog input terminal of the first analog-to-digital converter; The second laser ranging probe is electrically connected to the analog input terminal of the second analog-to-digital converter.

3. The intelligent detection process for steel beam structure according to claim 2, characterized in that: The touch screen is arranged on the housing; A buzzer is also provided on the housing; The buzzer is electrically connected to the MCU processor; If L>10mm or The MCU processor controls the buzzer to sound an alarm.

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