Embedded channel radian detection device and detection method

Abstract

The invention discloses an embedded channel radian detection device and a detection method, and belongs to the technical field of structure detection, the device comprises a detection table, an arc-shaped working plate is arranged on the detection table, a light source strip and a receiving strip are arranged on the arc-shaped working plate, a plurality of light source lamps are arranged on the light source strip, and a plurality of photosensitive sensors are arranged on the receiving strip. The size of the gap between the pre-buried channel and the arc-shaped working plate can be detected through the light intensity received by the photosensitive sensor, so that whether the radian of the pre-buried channel meets the requirement or not is detected, and detection is rapid and convenient; the second limiting plate is matched with the pre-buried channel to block the interference of external light to the photosensitive sensor, so that the detection accuracy is ensured; and the indicating lamps are arranged and correspond to the photosensitive sensors in position, and the indicating lamps close to the unqualified positions of the pre-buried channels and gaps can visually indicate the unqualified positions of the pre-buried channels, so that staff can make marks conveniently, and follow-up correction is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of structure detection, and in particular relates to a pre-buried groove curvature detection device and a detection method. Background Art

[0002] The embedded groove is an embedded part embedded in concrete, which can provide an efficient, safe and convenient connection method for the subsequent installation of various brackets, pipelines, cables and other facilities. During tunnel construction, the inner arc surface of the pipe segment is arc-shaped, and the corresponding embedded groove is also arc-shaped. After the anchor welding and hot-dip galvanizing process, the groove body may be deformed. The arc groove is also easily deformed under pressure during transportation and hoisting. The arc deformation of the groove will cause the entire embedded groove to not fit the pipe segment mold during embedding, affecting the overall quality and subsequent use of the finished pipe segment. The existing solution is usually to place the embedded groove on a groove inspection table before the embedded groove is loaded into the mold. The groove inspection table has an arc surface corresponding to the qualified embedded groove. Manually observe whether the lower end face of the embedded groove fits the arc surface, or use feeler gauges of different thicknesses to measure the gap width, so as to detect whether the arc of the embedded groove is qualified. If the gap is too large, it means it is unqualified. Manual observation and feeler gauge detection are generally accurate, time-consuming and cumbersome. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a pre-embedded groove curvature detection device to quickly detect the curvature of the pre-embedded groove.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A device for detecting the curvature of an embedded groove comprises a detection platform, wherein the detection platform is provided with an arc-shaped working plate for placing the embedded groove, the arc-shaped working plate is provided with a light source bar located on one side of the embedded groove and a receiving bar located on the other side of the embedded groove, the light source bar is provided with a plurality of light source lamps irradiating toward a gap between the embedded groove and the arc-shaped working plate, and the receiving bar is provided with a plurality of photosensitive sensors for receiving light emitted by the light source lamps.

[0006] Preferably, a first groove is provided on the arc-shaped working plate at a position corresponding to the light source bar, and a second groove is provided on the arc-shaped working plate at a position corresponding to the receiving bar.

[0007] Preferably, a first limiting plate is provided at one end of the arc-shaped working plate, and when the embedded groove is placed on the arc-shaped working plate, one end of the embedded groove abuts against the first limiting plate.

[0008] Preferably, a second limiting plate is provided on the arc-shaped working plate, and when the embedded groove is placed on the arc-shaped working plate, one side of the embedded groove abuts against the second limiting plate.

[0009] Preferably, the second limiting plate is an L-shaped plate, and when one side of the embedded groove abuts against the second limiting plate, the embedded groove and the second limiting plate block the light above the receiving strip from entering the photosensor.

[0010] Preferably, a buffer pad is provided on the second limiting plate, and one side of the embedded groove abuts against the buffer pad.

[0011] Preferably, a control box electrically connected to the light source lamp and the photosensor is provided on the detection platform.

[0012] Preferably, the arc-shaped working plate or the second limit plate is provided with an indicator electrically connected to the control box, and the indicator includes a plurality of indicator lights corresponding to the photosensitive sensor, and the plurality of indicator lights are arranged along the length direction of the embedded groove.

[0013] The present invention also provides a method for detecting the curvature of a pre-embedded groove, using the above-mentioned pre-embedded groove curvature detection device, comprising the following steps:

[0014] Step 1: Place the embedded groove on the arc-shaped working plate, with one side of the embedded groove against the second limit plate;

[0015] Step 2, the light source lamp on the light source bar emits light, and when there is a gap between the embedded groove and the arc-shaped working plate, the photosensitive sensor at the position corresponding to the gap on the receiving bar receives the light;

[0016] Step 3, the light-sensitive sensor receiving the light compares the light intensity with the set threshold value. When the light intensity is greater than the set threshold value, it indicates that the corresponding light-sensitive sensor exceeds the value, and the curvature at the corresponding part of the embedded groove is unqualified; when the light intensity is less than the set threshold value, it indicates that the corresponding light-sensitive sensor is normal, and the curvature at the corresponding part of the embedded groove is qualified;

[0017] Step 4: When the curvature of the embedded groove at one or more positions is unqualified, the staff will mark the embedded groove; if the curvature of all positions of the embedded groove is qualified, the embedded groove will be directly removed.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0019] 1. By arranging light source bars and receiving bars on both sides of the embedded groove, light source lamps are arranged on the light source bars, and light sensors are arranged on the receiving bars, the light intensity received by the light sensors can be used to detect the size of the gap between the embedded groove and the arc-shaped working plate, thereby detecting whether the curvature of the embedded groove meets the requirements, and the detection is quick and convenient;

[0020] 2. The first limit plate and the second limit plate are arranged on the arc-shaped working plate to limit the position of the embedded groove, and the second limit plate cooperates with the embedded groove to block the interference of external light on the photosensitive sensor, thereby ensuring the accuracy of detection;

[0021] 3. Set an indicator light, which corresponds to the position of the photosensitive sensor and is close to the embedded groove. When the indicator light at the unqualified gap is on, it can intuitively indicate the unqualified position of the embedded groove, which is convenient for personnel to mark and facilitate subsequent correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front structure of the device according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the cross-sectional structure of the device of the embodiment;

[0024] Figure 3 is a schematic diagram of a top view of the structure of the embodiment device;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a schematic diagram of the method of this embodiment; DETAILED DESCRIPTION

[0027] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pre-embedded groove curvature detection device includes a detection table 1. The detection table 1 is an arc-shaped detection table. The lower end of the detection table 1 is provided with a support leg for supporting the entire body. The upper end of the detection table 1 is arc-shaped. The upper end surface of the detection table 1 is provided with an arc-shaped working plate 2. The arc-shaped working plate 2 has the same arc radius as the qualified pre-embedded groove 9, and the arc length of the arc-shaped working plate 2 is greater than the length of the pre-embedded groove 9. The arc-shaped working plate 2 is used to place the pre-embedded groove 9 to be detected. The pre-embedded groove 9 is an existing arc-shaped C-shaped groove. A light source bar 3 and a receiving bar 4 are provided on the arc-shaped working plate 2. When the pre-embedded groove 9 is placed on the arc-shaped working plate 2, the light source bar 3 and the receiving bar 4 are respectively arranged on both sides of the pre-embedded groove 9, as shown in FIG. Figure 3 and Figure 4As shown, in this embodiment, the light source bar 3 is located on the left side of the embedded groove 9, and the receiving bar 4 is located on the right side of the embedded groove 9. The light source bar 3 is an arc-shaped strip plate, and the arc curvature of the light source bar 3 is the same as the arc curvature of the embedded groove 9 and the arc length of the light source bar 3 is greater than the length of the embedded groove 9. A plurality of light source lamps 31 are provided on the light source bar 3, and the plurality of light source lamps 31 are arranged on one side end face of the light source bar 3 close to the embedded groove 9, and the light source lamps 31 are irradiated toward the gap between the embedded groove 9 and the arc-shaped working plate 2. The receiving bar 4 is an arc-shaped strip plate, and the arc curvature of the receiving bar 4 is the same as the arc curvature of the embedded groove 9 and the arc length of the receiving bar 4 is greater than the length of the embedded groove 9. A plurality of photosensitive sensors 41 are provided on the receiving bar 4, and the plurality of photosensitive sensors 41 are arranged on one side end face of the receiving bar 4 close to the embedded groove 9, and the photosensitive sensor 41 is used to receive the light emitted by the light source lamp 31. The photosensitive sensor 41 includes an existing photoresistor, which can detect the intensity of light, such as the GL55 series photoresistor.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, a first groove 21 is provided on the arc-shaped working plate 2 at a position corresponding to the light source strip 3, and the first groove 21 is bent along the arc-shaped working plate 2. The light source strip 3 is arranged in the first groove 21 so that the center of the light source lamp 31 is flush with the gap, so that the light can pass through the gap in parallel. A second groove 22 is provided on the arc-shaped working plate 2 at a position corresponding to the receiving strip 4, and the second groove 22 is bent along the arc-shaped working plate 2. The receiving strip 4 is arranged in the second groove 22 so that the center of the photosensor 41 is flush with the gap, so as to receive the light conveniently. When light passes through the gap, if the gap is narrow, single-slit diffraction will be formed, and the distribution of light intensity will present light and dark stripes. The narrower the gap, the more concentrated the light intensity distribution is in the central stripes, which is received by the photosensitive sensor 41. The wider the gap, the more uniform the light intensity distribution is, which is received by the photosensitive sensor 41. The photosensitive sensor 41 can work when there is a gap. When a gap is generated between one or more places of the embedded groove 9 and the arc-shaped working plate 2, light shines on the photosensitive sensor 41 through the gap. The resistance value of the photosensitive sensor 41 changes according to the change of the incident light intensity. Therefore, the strength of the received light intensity can be known according to the resistance value of the photosensitive sensor 41, thereby grasping the size of the gap.

[0030] like Figure 1 , Figure 3 and Figure 4As shown, a first limiting plate 23 is provided at one end of the arc-shaped working plate 2. The first limiting plate 23 is arranged along the width direction of the arc-shaped working plate 2. When the embedded groove 9 is placed on the arc-shaped working plate 2, one end of the embedded groove 9 abuts against the first limiting plate 23, thereby limiting the left and right positions of the embedded groove 9. A second limiting plate 24 is provided on one side of the arc-shaped working plate 2. The cross section of the second limiting plate 24 is L-shaped and is inverted above the second groove 22. One end of the second limiting plate 24 contacts the first limiting plate 23, and the other end extends along the length direction of the arc-shaped working plate 2. The second limiting plate 24 is also arc-shaped in the length direction and has the same curvature as the embedded groove 9. The length of the second limiting plate 24 is greater than the length of the embedded groove 9. When the embedded groove 9 is placed on the arc-shaped working plate 2, one side of the embedded groove 9 abuts against the second limiting plate 24, which is convenient for positioning the embedded groove 9. The second limiting plate 24 is limited. At this time, the embedded groove 9 and the second limiting plate 24 block the light above the receiving strip 4 from entering the photosensitive sensor 41, thereby reducing the influence of external light on the photosensitive sensor 41. One end of the second limiting plate 24 contacts the first limiting plate 23. The first limiting plate 23 can block the light on the side of the end from affecting the photosensitive sensor 41. A blocking plate (not shown in the figure) is set at one end of the second limiting plate 24. The blocking plate is made of a rubber plate, and its lower end is close to the upper end surface of the arc-shaped working plate 2, thereby blocking the light on the side of the end from affecting the photosensitive sensor 41. A buffer pad 241 is provided on the second limiting plate 24. The buffer pad 241 is arranged on a side surface of the second limiting plate 24 corresponding to the embedded groove 9. One side of the embedded groove 9 is against the buffer pad 241. The buffer pad 241 prevents the embedded groove 9 from colliding with the second limiting plate 24 on the one hand, and can improve the sealing between the embedded groove 9 and the second limiting plate 24 on the other hand, so as to better block the light from entering.

[0031] like Figure 1 , Figure 3 and Figure 4As shown, a control box 5 is provided on the test bench 1, and the control box 5 is electrically connected to the light source lamp 31 and the photosensitive sensor 41 (the connecting cable is respectively connected through the light source bar 3 and one end of the receiving bar 4), and a first switch is provided on the control box 5 for controlling the switch of the light source lamp 31. An existing STM32 single-chip microcomputer is provided in the control box 5 and is electrically connected to the photosensitive sensor 41 for receiving the signal of the photosensitive sensor 41. The photosensitive sensor 41 is provided with multiple pins, VCC: power supply pin, connected to the single-chip microcomputer +5V or 3.3V; GND: ground wire, connected to the single-chip microcomputer GND, DO: switch output (0 or 1), under no light conditions or when the light intensity does not reach the set threshold, the DO port outputs a high level, and when the external light intensity exceeds the set threshold, the DO port outputs a low level; AO: analog output (voltage), connected to the single-chip microcomputer AD module, and an accurate value is obtained through AD conversion. In this embodiment, the output of the photosensor 41 can be controlled by setting a threshold. When the gap is too large and the light intensity exceeds the threshold, one or more photosensors 41 corresponding to the gap output a low level, and the single-chip microcomputer in the control box 5 receives the signal. If the gap is within a reasonable range and the light intensity does not exceed the threshold, the photosensor 41 corresponding to the gap outputs a high level, and the single-chip microcomputer in the control box 5 receives the signal. The second limit plate 24 is provided with an indicator 6, which is electrically connected to the control box 5. The indicator 6 includes a plurality of indicator lights 61. The number of the plurality of indicator lights 61 corresponds to the number of the photosensitive sensors 41 and the positions correspond one to one. The plurality of indicator lights 61 are arranged on one side of the second limit plate 24 close to the embedded groove 9. The plurality of indicator lights 61 are arranged along the length direction of the second limit plate 24 and the indicator lights 61 are located above the corresponding photosensitive sensors 41. The indicator lights 61 use existing LED lights. The plurality of indicator lights 61 are electrically connected to the single-chip microcomputer in the control box 5, so that the single-chip microcomputer controls the operation of the indicator lights 61. When the corresponding photosensitive sensor 41 receives light intensity exceeding the threshold value, the single-chip microcomputer controls the corresponding indicator light 61 to light up. When the corresponding photosensitive sensor 41 receives light intensity not exceeding the threshold value, the corresponding indicator light 61 is not lit. Therefore, by observing the on and off of the indicator light 61, it can be seen whether the curvature of the embedded groove 9 is qualified, and the indicator light 61 at the place where the gap is too large can directly indicate the place where the gap is too large, which is convenient for personnel to mark with a marker pen, so as to facilitate the subsequent correction of the embedded groove 9. An alarm light can also be set on the control box 5. The alarm light is connected to the single-chip microcomputer. The alarm light includes a red LED light and a green LED light. When multiple indicator lights 61 are not on, the green LED light is on, indicating that the embedded groove 9 is qualified; when more than one of the multiple indicator lights 61 is on, the red LED light is on, indicating that the embedded groove 9 is unqualified.

[0032] like Figure 1 and Figure 3As shown, the embedded groove 9 includes an anchor rod 91, and an anchor rod indication mark 25 is provided on the arc-shaped working plate 2. The distribution position of the anchor rod indication mark 25 corresponds one-to-one with the position of the anchor rod 91 of the qualified embedded groove 9, and the width of the anchor rod indication mark 25 corresponds to the width of the anchor rod 91. When the embedded groove 9 is placed on the arc-shaped working plate 2, the human eye observes whether the position of the anchor rod 91 on the embedded groove 9 corresponds to the anchor rod indication mark 25. As long as there is no large deviation, it can be manually judged as qualified (the accuracy requirement of the anchor rod 91 position is relatively low, and manual observation is quick and convenient).

[0033] This embodiment also provides a method for detecting the curvature of an embedded groove, using the above-mentioned device for detecting the curvature of an embedded groove, comprising the following steps:

[0034] Step 1, place the embedded groove 9 on the arc-shaped working plate 2, with one end of the embedded groove 9 against the first limit plate 23, and one side of the embedded groove 9 against the second limit plate 24;

[0035] The first limiting plate 23 and the second limiting plate 24 limit the position of the embedded groove 9 .

[0036] Step 2: The light source lamp 31 on the light source bar 3 emits light. When there is a gap between the embedded groove 9 and the arc-shaped working plate 2, the light sensor 41 at the position corresponding to the gap on the receiving bar 4 receives the light;

[0037] One or more photosensors 41 corresponding to the gap receive light.

[0038] Step 3, the light-sensitive sensor 41 receiving the light compares the light intensity with the set threshold value. When the light intensity is greater than the set threshold value, it indicates that the corresponding light-sensitive sensor 41 exceeds the value, and the curvature at the corresponding position of the embedded groove 9 is unqualified; when the light intensity is less than the set threshold value, it indicates that the corresponding light-sensitive sensor 41 is normal, and the curvature at the corresponding position of the embedded groove 9 is qualified;

[0039] When the light intensity is greater than the threshold, the photosensor 41 transmits the corresponding signal to the control box 5, and the control box 5 controls the indicator light 61 corresponding to the position of the over-value photosensor 41 to light up. The indicator light 61 is set next to the embedded groove 9, and the staff can directly observe that the position of the embedded groove 9 corresponding to the indicator light 61 is unqualified; when the light intensity is less than the threshold, the photosensor 41 transmits the corresponding signal to the control box 5, and the control box 5 controls the indicator light 61 corresponding to the position of the photosensor 41 to go out, and the corresponding position of the embedded groove 9 is qualified.

[0040] Step 4: When the curvature of one or more positions of the embedded groove 9 is unqualified, the staff will mark the embedded groove 9; if the curvature of all positions of the embedded groove 9 is qualified, the embedded groove 9 will be directly removed;

[0041] An alarm light is set on the control box 5. When more than one indicator light 61 is on, the red light of the alarm light is on, and the staff uses a marker to mark the embedded groove 9 according to the lit indicator light 61, and draws out the unqualified section to facilitate the subsequent correction of the embedded groove 9; when all indicator lights 61 are off, the green light of the alarm light is on, the embedded groove 9 is qualified, and the embedded groove 9 is directly removed to enter the next work process.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pre-buried groove curvature detection device, characterized in that: The invention comprises a detection platform (1), wherein the detection platform (1) is provided with an arc-shaped working plate (2) for placing a pre-buried groove (9), the arc-shaped working plate (2) is provided with a light source bar (3) located on one side of the pre-buried groove (9) and a receiving bar (4) located on the other side of the pre-buried groove (9), the light source bar (3) is provided with a plurality of light source lamps (31) for irradiating toward a gap between the pre-buried groove (9) and the arc-shaped working plate (2), and the receiving bar (4) is provided with a plurality of light-sensitive sensors (41) for receiving light emitted by the light source lamps (31).

2. The embedded groove curvature detection device according to claim 1, characterized in that: A first groove (21) is provided on the arc-shaped working plate (2) at a position corresponding to the light source strip (3), and a second groove (22) is provided on the arc-shaped working plate (2) at a position corresponding to the receiving strip (4).

3. The embedded groove curvature detection device according to claim 1, characterized in that: A first limiting plate (23) is provided at one end of the arc-shaped working plate (2); when the embedded groove (9) is placed on the arc-shaped working plate (2), one end of the embedded groove (9) abuts against the first limiting plate (23).

4. The embedded groove curvature detection device according to claim 1, characterized in that: A second limiting plate (24) is provided on the arc-shaped working plate (2), and when the embedded groove (9) is placed on the arc-shaped working plate (2), one side of the embedded groove (9) abuts against the second limiting plate (24).

5. The embedded groove curvature detection device according to claim 4, characterized in that: The second limiting plate (24) is an L-shaped plate, and when one side of the embedded groove (9) abuts against the second limiting plate (24), the embedded groove (9) and the second limiting plate (24) block the light above the receiving strip (4) from entering the photosensor (41).

6. The embedded groove curvature detection device according to claim 5, characterized in that: A buffer pad (241) is provided on the second limiting plate (24), and one side of the embedded groove (9) abuts against the buffer pad (241).

7. The embedded groove curvature detection device according to claim 4, characterized in that: The detection platform (1) is provided with a control box (5) electrically connected to the light source lamp (31) and the photosensor (41).

8. The embedded groove curvature detection device according to claim 7, characterized in that: An indicator (6) electrically connected to the control box (5) is provided on the arc-shaped working plate (2) or the second limit plate (24), the indicator (6) comprising a plurality of indicator lights (61) corresponding to the photosensitive sensor (41), the plurality of indicator lights (61) being arranged along the length direction of the embedded groove (9).

9. A method for detecting the curvature of an embedded groove, using the device for detecting the curvature of an embedded groove according to any one of claims 4 to 8, characterized in that: The following steps are involved: Step 1, placing the embedded groove (9) on the arc-shaped working plate (2), with one side of the embedded groove (9) resting against the second limiting plate (24); Step 2, the light source lamp (31) on the light source bar (3) emits light, and when a gap exists between the embedded groove (9) and the arc-shaped working plate (2), the light-sensitive sensor (41) at a position corresponding to the gap on the receiving bar (4) receives the light; Step 3: The light-sensitive sensor (41) receiving the light compares the light intensity with a set threshold value. When the light intensity is greater than the set threshold value, it indicates that the corresponding light-sensitive sensor (41) exceeds the value and the curvature of the corresponding part of the embedded groove (9) is unqualified; when the light intensity is less than the set threshold value, it indicates that the corresponding light-sensitive sensor (41) is normal and the curvature of the corresponding part of the embedded groove (9) is qualified; Step 4: When the curvature of one or more positions of the embedded groove (9) is unqualified, the staff marks the embedded groove (9); if the curvature of all positions of the embedded groove (9) is qualified, the embedded groove (9) is directly removed.

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