An integrated measuring device for the thickness of the metal base of a guardrail

Abstract

The present invention discloses an integrated measuring device for the thickness of the metal base of a guardrail plate, which relates to the technical field of metal thickness measurement. The device comprises an autonomous guided vehicle body controlled by a camera, wherein the vehicle body is provided with a vertical telescopic shaft, a horizontal transverse telescopic shaft is fixed to one side of the vertical telescopic shaft, a bracket is hinged to the end of the transverse telescopic shaft, a connecting block is fixed above and below the bracket, each connecting block is provided with a C-shaped frame, and an internal detection component and an external detection head are respectively provided at both ends of each C-shaped frame, and a coating detection component is provided on one side of each connecting block; compared with the prior art, the present invention realizes adaptive vertical fitting of the detection head to the curved surface of the corrugated plate through the collaborative design of contour fitting and feedback system.

Description

Technical Field

[0001] The invention relates to the technical field of metal thickness measurement, in particular to an integrated measuring device for the thickness of a metal substrate of a guardrail plate. Background Art

[0002] In traffic safety protection, guardrails must withstand external forces such as vehicle collisions. Insufficient metal base thickness can cause the guardrail to deform or damage during a collision, rendering it ineffective in protecting vehicles and passengers. Therefore, accurately measuring the metal base thickness is crucial to ensuring guardrails meet safety standards.

[0003] Traditional thickness measurement usually uses contact measuring tools, such as micrometers and calipers. These tools can easily damage the surface of the guardrail during the measurement process, and the measurement efficiency is low, making it difficult to meet the needs of automated testing. At the same time, the measurement of coating thickness usually requires the use of a special coating thickness gauge, but most existing coating thickness gauges are independent devices that cannot be integrated with the thickness measuring device to calculate the thickness of the metal substrate in an integrated manner, resulting in a cumbersome measurement process, untimely data acquisition, and inability to achieve integrated measurement. In addition, since the guardrail is a corrugated plate with an arched cross-section, the thickness gauge or caliper needs to manually keep the probe perpendicular to the plate surface. Once the measurement direction deviates from the normal direction, the measured value will be incorrect. The actual thickness The relationship is: , which seriously affects data reliability.

[0004] Therefore, it is necessary to provide an integrated measuring device for the thickness of the metal base of a guardrail plate to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an integrated measuring device for the thickness of the metal base of a guardrail plate, comprising a vehicle body provided with autonomous guidance controlled by a camera, a vertical telescopic axis provided on the vehicle body, a horizontal transverse telescopic axis fixed to one side of the vertical telescopic axis, a bracket hinged to the end of the transverse telescopic axis, a connecting block fixed to the upper and lower parts of the bracket, a C-shaped frame provided in each connecting block, an internal detection component and an external detection head provided at both ends of each C-shaped frame, and a coating detection component provided on one side of each connecting block.

[0006] Preferably, the end of the transverse telescopic shaft is connected to the bracket via a hinge mechanism, and the hinge mechanism includes a hinge with an angle lock and is equipped with a damping spring assembly for maintaining the stability of the bracket.

[0007] Preferably, a vertical laminating roller is rotatably provided on a side of the bracket away from the vehicle body.

[0008] Preferably, the C-shaped frame and the coating detection assembly are both rotatably connected to the connecting block, and a first rotating rod and a second rotating rod parallel to each other are fixed in the rotating shafts of the C-shaped frame and the coating detection assembly respectively, and a synchronization rod is hinged between the first rotating rod and the second rotating rod.

[0009] Preferably, an electric push rod is provided between the synchronization rod and the connecting block.

[0010] Preferably, the internal detection component includes an inserting plate, wherein the internal detection head is fixedly passed through the inserting plate, and two expansion rods are rotatably provided on both sides of the inserting plate, and rollers are provided at the ends of the expansion rods;

[0011] An expansion spring is connected between the two expansion rods on the same side, and a tension sensor is provided in the expansion spring.

[0012] Preferably, the two expansion rods corresponding to the two sides are connected together by a screw, the screw is connected to the two expansion rods by reverse threads, and the screw is rotatably arranged in the inserting plate.

[0013] Preferably, both of the screws are fixedly sleeved with screw gears, a transmission gear is meshed between the two screw gears, and an adjusting motor for driving one of the screws to rotate is provided in the plug plate.

[0014] Preferably, two vertical racks are slidingly arranged in the bracket, the two racks are fixedly connected to two connecting blocks respectively, a gear is meshed between the two racks, the gear is rotatably arranged in the bracket, and a servo motor for driving the gear is also arranged in the bracket.

[0015] Preferably, the coating detection assembly includes a connecting plate, a slider is slidably arranged in the connecting plate, a servo screw threadedly connected to the slider is also arranged in the connecting plate, an iron-based probe is slidably arranged in the slider, and a probe spring is arranged between the iron-based probe and the slider.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention utilizes a camera-controlled, autonomously guided vehicle equipped with tracked wheels, capable of autonomously cruising along guardrail panels, enabling unmanned, continuous measurement. The internal inspection component, external inspection head, and coating inspection component work together to simultaneously determine both the total thickness of the metal substrate and the coating thickness in a single measurement, eliminating the time-consuming, step-by-step repetitive positioning and data integration required by traditional methods.

[0018] In the present invention, the internal detection component dynamically adjusts the inclination angle of the C-frame through the difference of the tension sensor of the expansion spring, and combines with the synchronous drive of the electric push rod to achieve real-time vertical calibration, ensuring that the internal detection component, the external detection head and the coating detection component are all perpendicular to the guardrail detection surface, avoiding data errors caused by the tilt of the probe and the guardrail.

[0019] The screw and the adjustment motor drive the expansion rod spacing in the present invention to support stable fitting of the inner walls of guardrail panels of different widths; the servo motor adjusts the spacing between the upper and lower connecting blocks through gears and racks to adapt to arched guardrail panels of different height ranges. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an integrated measuring device for the thickness of the metal base of a guardrail plate;

[0021] Figure 2 A schematic side view of an integrated device for measuring the thickness of a guardrail metal substrate;

[0022] Figure 3 This is a schematic diagram of the overall structure of the C-shaped frame in the present invention;

[0023] Figure 4 It is a side view of the C-shaped frame in the present invention;

[0024] Figure 5 Schematic diagram of the structure of the internal detection component of the present invention;

[0025] Figure 6 Schematic diagram of the structure of the bracket in the present invention;

[0026] Figure 7 Schematic diagram of the structure of the coating detection component of the present invention;

[0027] In the figure: 1. Car body; 2. Vertical telescopic shaft; 3. Horizontal telescopic shaft; 4. Bracket; 41. Rack; 42. Gear; 43. Servo motor; 44. Laminating roller; 5. Connecting block; 6. C-shaped frame; 61. First rotating rod; 62. Second rotating rod; 63. Synchronous rod; 64. Electric push rod; 7. Internal detection assembly; 71. Insert plate; 72. Internal detection head; 73. Expansion rod; 74. Roller; 75. Expansion spring; 76. Screw; 77. Screw gear; 78. Transmission gear; 79. Adjustment motor; 8. External detection head; 9. Coating detection assembly; 91. Connecting plate; 92. Servo screw; 93. Slider; 94. Iron-based probe; 95. Probe spring; 10. Camera. DETAILED DESCRIPTION

[0028] See also Figure 1-Figure 7In an embodiment of the present invention, an integrated measuring device for the thickness of the metal base of a guardrail plate includes a vehicle body 1 provided with an autonomous guide controlled by a camera 10, a vertical telescopic shaft 2 is provided on the vehicle body 1, a horizontal transverse telescopic shaft 3 is fixed to one side of the vertical telescopic shaft 2, a bracket 4 is hinged at the end of the transverse telescopic shaft 3, a connecting block 5 is fixed at the upper and lower parts of the bracket 4, each of the connecting blocks 5 is provided with a C-shaped frame 6, and an internal detection component 7 and an external detection head 8 are respectively provided at both ends of each of the C-shaped frames 6, and a coating detection component 9 is provided on one side of each connecting block 5.

[0029] The vehicle body 1 is provided with a walking mechanism including crawler wheels driven by a motor;

[0030] The detection surfaces of the inner detection component 7 and the outer detection head 8 of the same C-shaped frame 6 are arranged facing each other;

[0031] By respectively placing two C-shaped frames 6 on the upper and lower plates of the bow-shaped guardrail board, the internal detection component 7 and the external detection head 8 of the same C-shaped frame 6 simultaneously measure the distance to the inner and outer surfaces of the guardrail board, and the thickness of the guardrail board can be obtained. Continuous measurement can be achieved by moving the vehicle body 1, and the coating detection component 9 can be attached to the guardrail board to detect the coating thickness.

[0032] In this embodiment, the end of the transverse telescopic shaft 3 is connected to the bracket 4 via a hinge mechanism. The hinge mechanism includes a hinge with an angle lock and is equipped with a damping spring assembly for maintaining the stability of the bracket 4.

[0033] In this embodiment, a vertical laminating roller 44 is rotatably provided on a side of the bracket 4 away from the vehicle body 1 .

[0034] By adjusting the angle of the bracket 4 so that the laminating roller 44 is kept in contact with the front of the guardrail board, the bracket 4 is kept perpendicular to the front of the guardrail board, thereby ensuring that the two C-shaped frames 6 are symmetrically distributed above and below the guardrail board.

[0035] In this embodiment, the C-shaped frame 6 and the coating detection assembly 9 are both rotatably connected to the connecting block 5, and a first rotating rod 61 and a second rotating rod 62 parallel to each other are fixed in the rotating shafts of the C-shaped frame 6 and the coating detection assembly 9, respectively, and a synchronization rod 63 is hinged between the first rotating rod 61 and the second rotating rod 62.

[0036] That is to say, under the action of the synchronization rod 63, the first rotation rod 61 and the second rotation rod 62 always remain parallel, so that the C-shaped frame 6 and the coating detection assembly 9 always rotate synchronously.

[0037] In this embodiment, an electric push rod 64 is provided between the synchronization rod 63 and the connection block 5 .

[0038] The electric push rod 64 can push the synchronization rod 63 to synchronously change the inclination angle of the C-frame 6 and the coating detection component 9, ensuring that the inner detection component 7, the outer detection head 8 and the coating detection component 9 are all perpendicular to the guardrail plate detection surface.

[0039] In this embodiment, the internal detection assembly 7 includes an inserting plate 71, an internal detection head 72 is fixedly passed through the inserting plate 71, two expansion rods 73 are rotatably provided on both sides of the inserting plate 71, and rollers 74 are provided at the ends of the expansion rods 73;

[0040] An expansion spring 75 is connected between the two expansion rods 73 on the same side, and a tension sensor is provided in the expansion spring 75 .

[0041] When the roller 74 is attached to the inner wall of the guardrail, the feedback information of the two tension sensors can be used to determine whether the inner detection head 72 is perpendicular to the inner wall of the guardrail, and the electric push rod 64 is controlled to adjust the inclination angle of the C-frame 6 according to the difference between the two tension sensors.

[0042] In this embodiment, the two expansion rods 73 corresponding to each other on both sides are connected together by a screw 76 . The screw 76 is connected to the two expansion rods 73 via reverse threads. The screw 76 is rotatably set in the inserting plate 71 .

[0043] That is to say, by rotating the screw 76, the distance between the expansion rods 73 on both sides can be adjusted to adapt to the inner walls of the guardrail panels of different widths, ensuring that the front and rear rollers 74 cover the width of the inner walls of the guardrail panels as much as possible to improve the accuracy of the difference between the two tension sensors.

[0044] In this embodiment, the two screw rods 76 are fixedly sleeved with screw gears 77 , a transmission gear 78 is meshed between the two screw gears 77 , and an adjustment motor 79 for driving one of the screw rods 76 to rotate is provided in the inserting plate 71 .

[0045] The distance between the expansion rods 73 corresponding to the two screw rods 76 can be quickly adjusted by adjusting the motor 79 .

[0046] In this embodiment, two vertical racks 41 are slidingly arranged in the bracket 4, and the two racks 41 are fixedly connected to the two connecting blocks 5 respectively. A gear 42 is meshed between the two racks 41, and the gear 42 is rotatably arranged in the bracket 4. The bracket 4 is also provided with a servo motor 43 for driving the gear 42.

[0047] The servo motor 43 drives the gear 42 to rotate and simultaneously drives the two racks 41 to slide, thereby adjusting the distance between the two connecting blocks 5 to adapt to guardrails of different heights.

[0048] In this embodiment, the coating detection assembly 9 includes a connecting plate 91, a slider 93 is slidably provided in the connecting plate 91, a servo screw 92 threadedly connected to the slider 93 is also provided in the connecting plate 91, an iron-based probe 94 is slidably provided in the slider 93, and a probe spring 95 is provided between the iron-based probe 94 and the slider 93.

[0049] When the iron-based probe 94 is vertically aligned with the guardrail board, the slider 93 is driven by the servo screw 92 to make the iron-based probe 94 fit the guardrail board to detect the coating thickness of the guardrail board. The probe spring 95 can provide elastic buffering when the iron-based probe 94 contacts the guardrail board.

[0050] During the specific implementation, the autonomous guided vehicle 1 is placed at the starting end of the guardrail, the travel route is set through the camera 10, and the vertical telescopic axis 2 is adjusted so that the horizontal telescopic axis 3 is at the center position of the guardrail height;

[0051] The servo motor 43 drives the gear 42 to drive the rack 41 to slide, adjust the spacing between the upper and lower connecting blocks 5, and match the height of the arched structure of the guardrail board, so that the upper and lower C-shaped frames 6 are respectively inserted into the upper and lower plate edges of the guardrail board, ensuring that the detection surfaces of the inner detection head 72 and the outer detection head 8 are facing the inner and outer surfaces of the board;

[0052] Adjust the horizontal telescopic shaft 3 to ensure that the laminating roller 44 is in close contact with the surface of the guardrail under the action of the damping spring assembly of the hinge mechanism;

[0053] In each connecting block 5, by adjusting the motor 79, the screw 76 is driven to rotate, and the spacing between the expansion rods 73 on both sides is adjusted synchronously so that the roller 74 covers the width of the inner wall of the guardrail board;

[0054] Start the electric push rod 64 and push the synchronization rod 63 to adjust the tilt angle of the C-frame 6 and the coating detection component 9. Feedback from the tension sensor of the internal detection component 7 ensures that the tension values of the rollers 74 on both sides are equal, indicating that the detection head is perpendicular to the board surface.

[0055] The distances from the inner and outer surfaces of the guardrail to the detection reference plane are measured respectively by the inner detection component 7 and the outer detection head 8. and , combined with the fixed value of the distance between the two , the total thickness of the guardrail can be calculated:

[0056]

[0057] The servo screw 92 is controlled to drive the slider 93 to move, so that the iron-based probe 94 touches the surface of the guardrail. The probe spring 95 is automatically locked after being compressed to the preset pressure value, and the coating thickness is measured. Then, the thickness of the metal substrate can be obtained:

[0058]

[0059] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An integrated measuring device for the thickness of a guardrail metal base, characterized in that: The invention comprises a vehicle body (1) which is provided with an autonomously guided vehicle body controlled by a camera (10), wherein a vertical telescopic shaft (2) is provided on the vehicle body (1), a horizontal transverse telescopic shaft (3) is fixed to one side of the vertical telescopic shaft (2), a bracket (4) is hinged to the end of the transverse telescopic shaft (3), a connecting block (5) is fixed above and below the bracket (4), each connecting block (5) is provided with a C-shaped frame (6), and an inner detection component (7) and an outer detection head (8) are provided at both ends of each C-shaped frame (6), and a coating detection component (9) is provided on one side of each connecting block (5); The C-shaped frame (6) and the coating detection assembly (9) are both rotatably connected to the connecting block (5); a first rotating rod (61) and a second rotating rod (62) parallel to each other are fixed to the rotating shafts of the C-shaped frame (6) and the coating detection assembly (9), respectively; a synchronization rod (63) is hinged between the first rotating rod (61) and the second rotating rod (62); The internal detection component (7) includes an inserting plate (71), an internal detection head (72) is fixedly passed through the inserting plate (71), two expansion rods (73) are rotatably provided on both sides of the inserting plate (71), and rollers (74) are provided at the ends of the expansion rods (73); An expansion spring (75) is connected between the two expansion rods (73) on the same side, and a tension sensor is provided in the expansion spring (75).

2. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: The end of the transverse telescopic shaft (3) is connected to the bracket (4) via a hinge mechanism, wherein the hinge mechanism includes a hinge with an angle lock and is provided with a damping spring assembly for maintaining the stability of the bracket (4).

3. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: A vertical laminating roller (44) is rotatably provided on a side of the bracket (4) away from the vehicle body (1).

4. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: An electric push rod (64) is provided between the synchronization rod (63) and the connection block (5).

5. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: The two expansion rods (73) corresponding to the two sides are connected together via a screw (76), and the screw (76) is connected to the two expansion rods (73) via reverse threads. The screw (76) is rotatably arranged in the inserting plate (71).

6. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 5 is characterized in that: The two screw rods (76) are both fixedly sleeved with screw gears (77), a transmission gear (78) is meshed between the two screw gears (77), and an adjustment motor (79) for driving one of the screw rods (76) to rotate is provided in the inserting plate (71).

7. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: Two vertical racks (41) are slidably arranged in the bracket (4), and the two racks (41) are fixedly connected to the two connecting blocks (5) respectively. A gear (42) is meshed between the two racks (41), and the gear (42) is rotatably arranged in the bracket (4). A servo motor (43) for driving the gear (42) is also arranged in the bracket (4).

8. The integrated measuring device for the thickness of the metal base of a guardrail plate according to claim 1 is characterized in that: The coating detection assembly (9) includes a connecting plate (91), a slider (93) is slidably provided in the connecting plate (91), a servo screw rod (92) threadedly connected to the slider (93) is also provided in the connecting plate (91), an iron-based probe (94) is slidably provided in the slider (93), and a probe spring (95) is provided between the iron-based probe (94) and the slider (93).

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