Durability monitoring device for steel grid concrete structure

Abstract

The invention provides a steel grid concrete structure durability monitoring device, and mainly relates to the technical field of reinforced concrete structure durability monitoring. A steel grid concrete structure durability monitoring device comprises a frame, a moving frame is slidably mounted on the frame, a moving table and an air pressure driving device are slidably mounted on the moving frame, an equipment mounting seat is slidably mounted in the moving table, a supporting frame is fixedly mounted outside the frame, the supporting frame is movably connected with a supporting structure, and the supporting structure is movably connected with the air pressure driving device. A detection device is movably installed in the device installation base, the frame comprises a supporting cross beam and supporting longitudinal beams, the supporting cross beam is fixedly connected between the two supporting longitudinal beams, and the two supporting longitudinal beams are fixedly connected between the two supporting longitudinal beams. The device has the beneficial effects that the steel grid concrete structure can be efficiently detected, the labor intensity of workers is reduced, and the accuracy of a measurement position is ensured, so that the effect of effectively monitoring the durability of the concrete structure is realized.

Description

Technical Field

[0001] The invention mainly relates to the technical field of durability monitoring of reinforced concrete structures, and in particular to a durability monitoring device for steel grid concrete structures. Background Art

[0002] Concrete is one of the most important civil engineering materials in contemporary times. It is an artificial stone made of cementitious materials, granular aggregates, water and admixtures and additives added in a certain proportion, and is evenly mixed, compacted into a dense shape and cured and hardened. Concrete has the characteristics of abundant raw materials, low price and simple production process, so its usage is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability and a wide range of strength grades. These characteristics make its scope of use very wide. It is not only used in various civil engineering projects, but also in shipbuilding, machinery industry, marine development and geothermal engineering. Concrete is also an important material.

[0003] Strength is the main mechanical property of concrete after hardening, reflecting the quantitative ability of concrete to resist load. Concrete strength includes compression, tension, shear, bending, flexure and bond strength. Among them, compression strength is the largest and tensile strength is the smallest. The deformation of concrete includes deformation under non-load and deformation under load as the main measurement references. The deformation under non-load includes chemical shrinkage, dry-wet deformation and temperature deformation. Excessive cement use will easily cause chemical shrinkage inside the concrete and cause fine cracks. After years of use, the concrete structure may also have some internal cracks or corrosion, resulting in a decrease in the performance of the concrete structure.

[0004] In order to understand and grasp the performance of concrete in real time, it is generally necessary to use corresponding monitoring devices to monitor it. Steel grid concrete structures are usually tested by the ultrasonic rebound comprehensive method, and the structures of different parts of the concrete are regularly tested to achieve the effect of monitoring the durability of the concrete structure.

[0005] The ultrasonic rebound comprehensive method is to measure the rebound value of concrete by a rebound tester and the ultrasonic sound velocity value of the concrete structure by an ultrasonic detector for detection. The test result can be obtained by substituting the test value into the calculation formula. It is a method that is currently used more frequently in the market.

[0006] However, the existing devices for the durability of reinforced concrete structures generally require marking at the measurement position and then directly using a handheld device for detection. This detection method is inefficient and the workers' hands cannot be freed. They are prone to fatigue after a long time, resulting in poor comfort. Construction workers are also prone to deviations in the measurement position of the measurement point due to fatigue during long-term work, which affects the detection results. Summary of the invention

[0007] In order to solve the shortcomings of the prior art, the present invention provides a steel grid concrete structure durability monitoring device, which can efficiently detect the steel grid concrete structure, reduce the labor intensity of the staff, ensure the accuracy of the measurement position, and thus effectively monitor the durability performance of the concrete structure.

[0008] In order to achieve the above object, the present invention is implemented through the following technical solutions: A durability monitoring device for a steel grid concrete structure comprises a frame, a mobile frame is slidably mounted on the frame, a mobile platform and a pneumatic drive device are slidably mounted on the mobile frame, an equipment mounting seat is slidably mounted inside the mobile platform, a support frame is fixedly mounted outside the frame, the support frame is movably connected to a supporting structure, and a detection device is movably mounted in the equipment mounting seat.

[0009] The frame includes a supporting crossbeam and a supporting longitudinal beam, the supporting crossbeam is fixedly connected between the two supporting longitudinal beams, and two supporting longitudinal beams are fixedly connected between the two supporting longitudinal beams, a slide groove is opened in the supporting longitudinal beam, a screw rod is rotatably installed in the slide groove, a driving motor is provided at one end of the supporting longitudinal beam, an output shaft of the driving motor is connected to the screw rod through a coupling, synchronous wheels are respectively provided on the screw rods in the two supporting longitudinal beams, synchronous belts are installed on the two synchronous wheels, and the synchronous belt passes through a supporting crossbeam close to the driving motor, a slider is installed in the slide groove, the slider is threadedly matched with the screw rod, and a part of the slider extending out of the slide groove is fixedly connected to the moving frame.

[0010] A support column is provided at one side of the frame, and a support foot pad is movably installed on the support column.

[0011] The movable frame is provided with a second slide groove, the second slide groove has openings in two directions, a second screw rod is rotatably installed in the second slide groove, a second drive motor is fixedly installed on the side of one end of the movable frame, the output shaft of the second drive motor drives the second screw rod to rotate through two bevel gears, a second slider is slidably installed in the second slide groove, the second slider is threadedly matched with the second screw rod, and the second slider is respectively fixedly connected to the movable platform and the pneumatic drive device.

[0012] The support frame structure includes a U-shaped rod, which is vertically arranged and fixedly connected to the middle parts of two supporting cross beams. A support seat is fixedly installed in the middle and upper part of the U-shaped rod, and a butt joint is fixedly connected to the middle part of the support seat. An oblique support rod is provided between the butt joint and the middle and lower part of the supporting longitudinal beam, and the butt joint is movably connected to the supporting structure.

[0013] The supporting structure includes a supporting rod, a lifting rod is slidably installed in the supporting rod, clamping knobs are rotatably installed on both sides of the supporting rod, a docking hole is opened on one side of the lifting rod, a U-shaped positioning piece is fixedly installed on one side of the lifting rod, the bottom of the supporting rod is fixedly connected to the base plate, and an oblique support rod and a triangular support frame are fixedly connected between the base plate and the supporting rod.

[0014] The air pressure driving device drives the equipment mounting seat to slide in the moving platform, and the lower end of the equipment mounting seat is provided with an unlocking button.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The present invention can automatically drive the detection equipment to move and perform detection according to the set values ​​through the mobile frame, the mobile platform and the corresponding driving components, thereby realizing efficient detection of the steel grid concrete structure. Through the design of the supporting structure and the above-mentioned automated detection drive structure, the labor intensity of the staff can be significantly reduced, the measurement position is accurate, and different parts of the steel grid concrete are regularly detected to realize effective monitoring of the durability of the concrete structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the first perspective structure of the framework of the present invention; Figure 3 It is a schematic diagram of the structure of the second viewing angle of the framework of the present invention; Figure 4 This is a schematic diagram of the third viewing angle structure of the framework of the present invention; Figure 5 It is a schematic diagram of the support structure of the present invention; Figure 6 It is a schematic diagram of the structure of the synchronous wheel and synchronous belt of the present invention.

[0017] The numbers shown in the accompanying drawings are: 1. frame; 2. mobile frame; 3. mobile platform; 4. equipment mounting seat; 5. support frame; 6. support structure; 7. pneumatic drive device; 11. support crossbeam; 12. support longitudinal beam; 21. slide groove two; 22. screw rod two; 23. drive motor two; 24. slider two; 40. unlock button; 51. U-shaped rod; 52. support seat; 53. docking joint; 54. oblique support rod; 61. support rod; 62. lifting rod; 63. clamping knob; 64. docking hole; 65. U-shaped positioning piece; 66. bottom plate; 67. oblique support rod; 68. triangular support frame; 100. support column; 101. support foot pad; 120. slide groove one; 121. screw rod one; 122. drive motor one; 123. synchronous wheel; 124. synchronous belt; 125. slider one. DETAILED DESCRIPTION

[0018] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0019] Combined with Figure 1-Figure 6 A steel grid concrete structure durability monitoring device comprises a frame 1, a mobile frame 2 is slidably mounted on the frame 1, a mobile platform 3 and a pneumatic drive device 7 are slidably mounted on the mobile frame 2, a device mounting seat 4 is slidably mounted in the mobile platform 3, a support frame 5 is fixedly mounted outside the frame 1, the support frame 5 is movably connected to a support structure 6, and a detection device is movably mounted in the device mounting seat 4. The detection device comprises a rebound tester, an ultrasonic transducer, etc.

[0020] The frame 1 includes a support crossbeam 11 and a support longitudinal beam 12. The support crossbeam 11 is fixedly connected between two support longitudinal beams 12. Two support longitudinal beams 12 are fixedly connected between the two support longitudinal beams 12. A slide groove 120 is provided in the support longitudinal beam 12. A screw rod 121 is rotatably installed in the slide groove 120. A drive motor 122 is provided at one end of the support longitudinal beam 12. The output shaft of the drive motor 122 is connected to the screw rod 121 through a coupling. The screw rods 121 in the two support longitudinal beams 12 are respectively A synchronous wheel 123 is provided, and a synchronous belt 124 is installed on the two synchronous wheels 123. The synchronous belt 124 passes through a supporting beam 11 close to a driving motor 122. A slider 125 is installed in the slide groove 120. The slider 125 is threadedly matched with the screw rod 121. The slider 125 extends out of the slide groove 120 and is fixedly connected to the moving frame 2. The driving motor 122 drives the two screw rods 121 to rotate at the same time through the synchronous wheel 123 and the synchronous belt 124, thereby driving the moving frame 2 to move up and down.

[0021] A support column 100 is provided on one side of the frame 1, and a support foot pad 101 is movably mounted on the support column 100. The support foot pad 101 can adjust the support height by rotating.

[0022] The movable frame 2 is provided with a second slide groove 21, and the second slide groove 21 has openings in two directions. A second screw rod 22 is rotatably installed in the second slide groove 21. A second drive motor 23 is fixedly installed on the side of one end of the movable frame 2. The output shaft of the second drive motor 23 drives the second screw rod 22 to rotate through two bevel gears. A second slider 24 is slidably installed in the second slide groove 21. The second slider 24 is threadedly matched with the second screw rod 22. The second slider 24 is respectively fixedly connected to the movable platform 3 and the pneumatic driving device 7; the second drive motor 23 rotates to drive the second screw rod 22 to rotate, and then drives the second slider 24 and the movable platform 3 to move horizontally.

[0023] The support frame 5 structure includes a U-shaped rod 51, which is vertically arranged and fixedly connected to the middle of the two supporting cross beams 11, a support seat 52 is fixedly installed in the middle and upper part of the U-shaped rod 51, a docking joint 53 is fixedly connected to the middle part of the support seat 52, an oblique support rod 54 is provided between the docking joint 53 and the middle and lower part of the supporting longitudinal beam 12, and the docking joint 53 is movably connected to the supporting structure 6; the support seat 52 is arranged in the middle and upper part of the U-shaped rod 51, and since the center of the frame 1 is located below it, the overall weight of the frame 1 will keep the entire frame 1 in a vertical state when the docking joint 53 is installed.

[0024] The support structure 6 includes a support rod 61, in which a lifting rod 62 is slidably installed, and a clamping knob 63 is rotatably installed on both sides of the support rod 61. A docking hole 64 is provided on one side of the lifting rod 62, and a U-shaped positioning member 65 is fixedly installed on one side of the lifting rod 62. The bottom of the support rod 61 is fixedly connected to a bottom plate 66, and a diagonal support rod 67 and a triangular support frame 68 are fixedly connected between the bottom plate 66 and the support rod 61. The clamping knob 63 can fix the height of the lifting rod 62 in the support rod 61. A guide groove is provided on the lifting rod 62, and a guide bar is provided in the support rod 61. The guide bar and the guide groove are slidably matched so that the lifting rod 62 and the support rod 61 can only slide relative to each other; when in use, the operator can stand on the bottom plate 66 to assist in fixing the device, so that the placement is more stable; the U-shaped positioning member 65 can lock the angle of the frame 1, and the angle of the frame 1 changes during placement and use.

[0025] The pneumatic drive device 7 drives the device mounting seat 4 to slide in the moving platform 3, and the lower end of the device mounting seat 4 has an unlocking button 40. The unlocking button 40 is used to control the installation or removal of the detection device in the device mounting seat 4. The device mounting seat 4 has an elastic mechanism, and the spring elastic force can lock the position of the detection device. By pressing the unlocking button 40, the locking state of the detection device can be unlocked by overcoming the spring elastic force. The device is also provided with a control device in a wired manner. The control device is a control device based on a single-chip microprocessor, which can realize the work control of the device.

[0026] When the device is in use, the height of the lifting rod 62 is adjusted according to the height of the part to be monitored, and locked by the pressing knob 63, the docking joint 53 of the support seat 52 is inserted into the docking hole 64 of the lifting rod 62, and the lower part of the U-shaped rod 51 is inserted into the U-shaped positioning piece 65, and the device is placed next to the concrete structure to be monitored, so that there is a certain pressure between the supporting foot pad 101 and the concrete structure, and the operator can stand on the bottom plate 66 to keep the device stable; the device is controlled by the control device to start working, first, the rebound tester is installed on the equipment mounting seat 4, and under the control of the control device, the driving motor 1 122 and the driving motor 2 23 respectively drive the moving platform 3 to move along the X and Y axes according to the preset distance and then stop, and the pneumatic drive device 7 drives the device The mounting seat 4 moves axially in the moving platform 3, so as to measure and record the rebound value of the point, and the driving motor 1 122 and the driving motor 2 23 work again to drive the moving platform 3 to move to the position corresponding to each measuring point and stop, and all measuring points are detected and recorded; after the rebound test is completed, the rebound tester is removed, and the ultrasonic transducer of the ultrasonic detector is installed. The ultrasonic transducer needs to be coated with coupling agent when used. The driving motor 1 122 and the driving motor 2 23 work to drive the moving platform 3 to stop at all measuring points in turn, and the pneumatic drive device 7 drives the equipment mounting seat 4 and the detection equipment in turn for detection. When in use, if conditions permit, the device can be arranged on both sides of the concrete structure at the same time, and the two devices can work together to complete the detection.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel grid concrete structure durability monitoring device, comprising a frame (1), characterized in that: A movable frame (2) is slidably mounted on the frame (1); a movable platform (3) and a pneumatic drive device (7) are slidably mounted on the movable frame (2); a device mounting seat (4) is slidably mounted inside the movable platform (3); a support frame (5) is fixedly mounted outside the frame (1); the support frame (5) is movably connected to a supporting structure (6); and a detection device is movably mounted in the device mounting seat (4).

2. The durability monitoring device for steel grid concrete structure according to claim 1 is characterized in that: The frame (1) comprises a supporting crossbeam (11) and a supporting longitudinal beam (12); the supporting crossbeam (11) is fixedly connected between two supporting longitudinal beams (12); two supporting longitudinal beams (12) are fixedly connected between the two supporting longitudinal beams (12); a slide groove (120) is provided in the supporting longitudinal beam (12); a screw rod (121) is rotatably installed in the slide groove (120); a driving motor (122) is provided at one end of the supporting longitudinal beam (12); an output shaft of the driving motor (122) is connected to the screw rod (121) via a coupling. 121), a synchronous wheel (123) is respectively provided on the screw rods (121) in the two supporting longitudinal beams (12), and a synchronous belt (124) is installed on the two synchronous wheels (123), and the synchronous belt (124) passes through a supporting cross beam (11) close to the driving motor (122), and a slider (125) is installed in the slide groove (120), and the slider (125) is threadedly matched with the screw rod (121), and the slider (125) extends out of the slide groove (120) and is fixedly connected to the moving frame (2).

3. The durability monitoring device for steel grid concrete structure according to claim 1 is characterized in that: A support column (100) is provided on one side of the frame (1), and a support foot pad (101) is movably mounted on the support column (100).

4. The durability monitoring device for steel grid concrete structure according to claim 1 is characterized by: The movable frame (2) is provided with a second slide groove (21), the second slide groove (21) having openings in two directions, a second screw rod (22) being rotatably mounted in the second slide groove (21), a second drive motor (23) being fixedly mounted on the side surface of one end of the movable frame (2), the output shaft of the second drive motor (23) driving the second screw rod (22) to rotate via two bevel gears, a second slider (24) being slidably mounted in the second slide groove (21), the second slider (24) being threadably matched with the second screw rod (22), and the second slider (24) being fixedly connected to the movable platform (3) and the pneumatic drive device (7) respectively.

5. The durability monitoring device for steel grid concrete structure according to claim 2 is characterized by: The support frame (5) structure comprises a U-shaped rod (51), the U-shaped rod (51) being arranged vertically and fixedly connected to the middle parts of two supporting cross beams (11), a supporting seat (52) being fixedly mounted to the middle upper part of the U-shaped rod (51), a butt joint (53) being fixedly connected to the middle part of the supporting seat (52), an oblique support rod (54) being provided between the butt joint (53) and the middle lower part of the supporting longitudinal beam (12), and the butt joint (53) being movably connected to the supporting structure (6).

6. The durability monitoring device for steel grid concrete structure according to claim 1 is characterized by: The support structure (6) comprises a support rod (61), a lifting rod (62) is slidably mounted in the support rod (61), pressing knobs (63) are rotatably mounted on both sides of the support rod (61), a docking hole (64) is provided on one side of the lifting rod (62), a U-shaped positioning piece (65) is fixedly mounted on one side of the lifting rod (62), the bottom of the support rod (61) is fixedly connected to a bottom plate (66), and an oblique support rod (67) and a triangular support frame (68) are fixedly connected between the bottom plate (66) and the support rod (61).

7. The durability monitoring device for steel grid concrete structure according to claim 1 is characterized by: The pneumatic drive device (7) drives the equipment mounting seat (4) to slide inside the moving platform (3); the lower end of the equipment mounting seat (4) is provided with an unlocking button (40).

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