Detection device for hinge joint damage of concrete hollow slab beam
By combining a laser displacement sensor and a calibration mechanism, high precision and automation of hinge joint damage detection are achieved, solving the problems of insufficient detection accuracy and large workload in existing technologies, and providing a performance evaluation method for hinge joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-03-20
AI Technical Summary
Existing hinge breakage detection devices cannot provide sufficient accuracy, especially when measuring minute displacement changes, and require staff to be involved throughout the process, resulting in inaccurate detection results and a large workload.
Employing a laser displacement sensor and calibration mechanism, the laser displacement sensor emits a laser to the measuring plate and receives the reflected light. Combined with a signal processor and SD card, data is acquired and stored, enabling non-contact, high-precision displacement measurement and automated evaluation of the hinge's working performance.
It improves the accuracy and precision of hinge joint damage detection, reduces the involvement of staff, lowers the workload and difficulty, and can accurately capture minute displacement changes.
Smart Images
Figure CN224019004U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to hinge joint damage detection technical field, concretely relates to a kind of detection device of concrete hollow slab beam hinge joint damage. BACKGROUND
[0002] In the highway and bridge construction of our country, most small and medium-sized structures are assembled hinge plate beam structure, that is, each concrete hollow slab beam is connected by hinge joint transversely, so that each slab beam is connected into a whole, the connection mode of hinge joint is to pour concrete at the splicing of two slab beams, to tightly combine new poured concrete with stressed reinforcement and original structure, to transmit shear force between slab beams through shear hinge, to jointly bear vehicle load, to ensure the service life of slab beam and driving safety, after long-term rolling and aging of vehicle, hinge joint responsible for transmitting shear force is prone to damage, resulting in longitudinal relative displacement of adjacent slab beams at hinge joint position under operating conditions, when the longitudinal relative displacement exceeds standard value, single-beam stress condition is caused, and safety risk is extremely prone to occur, so it is crucial to ensure the integrity of hinge joint, and longitudinal height difference of adjacent slab beams at hinge joint position needs to be monitored regularly.
[0003] But the existing hinge joint damage detection device uses the relative position change of ruler and float to obtain the relative displacement information of slab beam on both sides of hinge joint, this detection method cannot provide sufficient precision, especially when measuring small displacement change, the position change of float is not easy to observe by staff, thereby affecting the accuracy and accuracy of detection result, and in the measurement process, staff needs to participate throughout, to observe and record the position information of float in real time, workload is large, so that there can be certain error in data acquisition. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of detection device of concrete hollow slab beam hinge joint damage, to solve the problems proposed in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] A kind of detection device of concrete hollow slab beam hinge joint damage, including connecting base, the lower portion of the connecting base is provided with mounting base, calibration mechanism is fixedly installed between the mounting base and connecting base, further including:
[0007] Detection mechanism, the detection mechanism is arranged in the lower portion of mounting base.
[0008] As one preferred scheme of the utility model, the connecting base is provided with a contact surface on the top, a connecting surface on the bottom, and a first threaded hole on each corner of the connecting surface, and a second threaded hole on each corner of the surface of the mounting base.
[0009] As one preferred scheme of the utility model, the calibration mechanism comprises a threaded rod, an adjusting knob and a bubble level, the threaded rod is threadedly connected inside the first threaded hole and the second threaded hole, the adjusting knob is fixedly connected to the bottom of the threaded rod, and the bubble level is fixedly installed at the center of the bottom of the mounting base.
[0010] As one preferred scheme of the utility model, the detection mechanism comprises a gripper, a laser displacement sensor, a connecting rod and a measuring plate, the gripper is fixedly installed at the bottom of the mounting base, the laser displacement sensor is movably installed inside the gripper, the connecting rod is fixedly installed at the bottom of the other mounting base, and the measuring plate is fixedly installed at one end of the connecting rod.
[0011] As one preferred scheme of the utility model, the detection mechanism further comprises a first connecting block and a first rotating shaft, the first connecting block is fixedly installed between the gripper and the connecting base, and the first rotating shaft is fixedly installed between the first connecting block and the gripper.
[0012] As one preferred scheme of the utility model, the connecting rod comprises a fixed rod, a movable rod, a second connecting block and a second rotating shaft, the second connecting block is fixedly installed between the fixed rod and the movable rod, the second rotating shaft is fixedly installed inside the second connecting block, and one end of the fixed rod is provided with an external thread.
[0013] As one preferred scheme of the utility model, the laser displacement sensor is provided with a signal processor inside, one side of the signal processor is electrically connected with an SD card, and the other side of the signal processor is fixedly connected with a battery.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] The calibration mechanism can ensure the horizontal state of the detection mechanism when detecting the initial state, thereby ensuring the accuracy and reliability of the detection data, the laser displacement sensor emits laser to the measuring plate and receives the reflected light, the measuring plate moves following the movement of the plate beam during the detection process, so that the signal processor of the laser displacement sensor receives different range of acquisition distances, the collected data is transmitted to the computer through the SD card, the computer processes the collected displacement data, analyzes the relative displacement change of the two sides of the hinge joint, according to the change of the displacement data, the working performance of the hinge joint is evaluated, including the stiffness, the force transmission capacity and whether there is damage, etc., the laser displacement sensor can provide non-contact, high-precision displacement measurement, can accurately capture the slight displacement change of the two sides of the hinge joint, greatly improves the accuracy and accuracy of the hinge joint damage detection result, the collected detection information can be stored through the SD card, so that the engineers can better understand the damage situation and structural performance of the hinge joint, without the engineers participating in the whole process, reducing the work load and difficulty. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor. Among them:
[0017] Figure 1 It is the overall structure schematic diagram of the present application;
[0018] Figure 2 It is the calibration mechanism structure schematic diagram of the present application;
[0019] Figure 3 It is the detection mechanism structure schematic diagram of the present application;
[0020] Figure 4 It is the laser displacement sensor structure section view of the present application;
[0021] Figure 5 It is the overall horizontal detection state structure schematic diagram of the present application.
[0022] In the figure: 1, connecting base; 101, contact surface; 102, connecting surface; 2, mounting base; 3, calibration mechanism; 301, threaded rod; 302, adjusting knob; 303, level bubble; 4, detection mechanism; 401, gripper; 402, laser displacement sensor; 403, connecting rod; 403a, fixed rod; 403b, movable rod; 403c, second connecting block; 403d, second rotating shaft; 404, measuring plate; 405, first connecting block; 406, first rotating shaft; 5, first threaded hole; 6, second threaded hole; 7, signal processor; 8, SD card; 9, battery. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways that are different from those described herein without departing from the spirit and scope of the present application, and those skilled in the art can make similar extensions without departing from the connotation of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive with other embodiments. Embodiment 1
[0026] As shown in Figures 1-5 , the first embodiment of the present application provides a detection device for damaged hinge joints of concrete hollow slab beams, which comprises a connecting base 1, a mounting base 2 is arranged below the connecting base 1, a calibration mechanism 3 is fixedly installed between the mounting base 2 and the connecting base 1, and further comprising:
[0027] A detection mechanism 4 is arranged below the mounting base 2.
[0028] As shown in Figure 1 , Figure 3 and Figure 5 , the contact surfaces 101 of the two connecting bases 1 are respectively pasted on both sides of the gap at the detection position of the hinge joint using structural adhesive, the mounting base 2 below the connecting base 1 is horizontally calibrated by the calibration mechanism 3, then the detection mechanism 4 is installed below the mounting base 2 in the horizontal position, and the relative displacement of both sides of the hinge joint is detected by the detection mechanism 4. Embodiment 2
[0029] Referring to Figure 1 , Figure 2 and Figure 3 , the second embodiment of the utility model, this embodiment is based on the last embodiment.
[0030] In this embodiment, the connecting base 1 is provided with an internal hollow structure, the top of the connecting base 1 is provided with a contact surface 101, the bottom of the connecting base 1 is provided with a connecting surface 102, the four corners of the connecting surface 102 are provided with first threaded holes 5, the four corners of the surface of the mounting base 2 are provided with second threaded holes 6, the calibration mechanism 3 comprises a threaded rod 301, an adjusting knob 302 and a level bubble 303, the threaded rod 301 is threadedly connected inside the first threaded hole 5 and the second threaded hole 6, the adjusting knob 302 is fixedly connected to the bottom of the threaded rod 301, and the level bubble 303 is fixedly installed at the center of the bottom of the mounting base 2.
[0031] As shown in Figure 1 , Figure 2 and Figure 3 , the mounting base 2 is fixedly installed below the connecting base 1 through the threaded rod 301, the position of the bubble in the level bubble 303 is observed, the threaded rod 301 is rotated, and the horizontal position of the mounting base 2 is adjusted until the bubble position in the level bubble 303 is in the center circle. Embodiment 3
[0032] Referring to Figure 3 , Figure 4 and Figure 5 , the third embodiment of the utility model, this embodiment is based on the last two embodiments.
[0033] In this embodiment, the detection mechanism 4 comprises a grabbing clamp 401, a laser displacement sensor 402, a connecting rod 403 and a measuring plate 404, the grabbing clamp 401 is fixedly installed at the bottom of the mounting base 2, the laser displacement sensor 402 is movably installed inside the grabbing clamp 401, the connecting rod 403 is fixedly installed at the bottom of the other mounting base 2, the measuring plate 404 is fixedly installed at one end of the connecting rod 403, the detection mechanism 4 further comprises a first connecting block 405 and a first rotating shaft 406, the first connecting block 405 is fixedly installed between the grabbing clamp 401 and the connecting base 1, the first rotating shaft 406 is fixedly installed between the first connecting block 405 and the grabbing clamp 401, the connecting rod 403 comprises a fixed rod 403a, a movable rod 403b, a second connecting block 403c and a second rotating shaft 403d, the second connecting block 403c is fixedly installed between the fixed rod 403a and the movable rod 403b, the second rotating shaft 403d is fixedly installed inside the second connecting block 403c, one end of the fixed rod 403a is provided with an external thread, the inside of the laser displacement sensor 402 is provided with a signal processor 7, one side of the signal processor 7 is electrically connected with an SD card 8, and the other side of the signal processor 7 is fixedly connected with a battery 9.
[0034] As Figure 3 , Figure 4 and Figure 5 shown, the laser displacement sensor 402 is fixed in the grab 401, the grab 401 is rotated, the laser emitting end of the laser displacement sensor 402 in the grab 401 is vertically downward, the threaded end in the connecting rod 403 is installed below the mounting base 2 on the other side of the gap, the movable rod 403b is rotated to be perpendicular to the fixed rod 403a, the laser displacement sensor 402 is started, the laser emitter in the laser displacement sensor 402 emits laser, the laser irradiates to the surface of the measuring plate 404, the laser beam irradiated to the surface of the measuring plate 404 is reflected, the path of the reflected light changes due to the displacement change of the surface of the measuring plate 404, and the measuring plate 404 changes according to the vertical displacement change of the hinge gap side plate beam, the reflected laser beam is collected and focused on the photosensitive element by the lens of the laser displacement sensor 402, the photosensitive element converts the light signal into an electric signal and transmits it to the signal processor 7, the signal processor 7 stores the electric signal in the SD card 8, the engineer takes out the SD card 8 in the laser displacement sensor 402 and inserts it into the computer, extracts the displacement measurement data and analyzes it, and finally evaluates the damage of the plate beam hinge gap, the staff can also rotate the movable rod 403b and the grab 401, so that the measuring plate 404 is in a vertical position, the laser displacement sensor 402 emits horizontal laser irradiation to the measuring plate 404, and detects the horizontal displacement of the plate beams on both sides of the hinge gap.
[0035] In use, the contact surfaces 101 in the two connecting bases 1 are respectively pasted on both sides of the gap at the position to be detected by using structural glue, the mounting base 2 is fixedly installed below the connecting base 1 through the threaded rod 301, the position of the bubble in the horizontal bubble 303 is observed, the threaded rod 301 is rotated, the horizontal position of the mounting base 2 is adjusted until the position of the bubble in the horizontal bubble 303 is in the central circle, the laser displacement sensor 402 is fixed in the gripper 401, the gripper 401 is rotated, the laser emitting end of the laser displacement sensor 402 in the gripper 401 is vertically downward, the threaded end in the connecting rod 403 is installed below the mounting base 2 on the other side of the gap, the movable rod 403b is rotated to be perpendicular to the fixed rod 403a, the laser displacement sensor 402 is started, the laser emitter in the laser displacement sensor 402 emits laser, the laser is irradiated to the surface of the measuring plate 404, the laser beam irradiated to the surface of the measuring plate 404 is reflected, the path of the reflected light changes due to the displacement change of the surface of the measuring plate 404, the measuring plate 404 changes according to the vertical displacement change of the plate beam on one side of the hinge joint, the reflected laser beam is collected by the lens of the laser displacement sensor 402 and focused on the photosensitive element, the photosensitive element converts the optical signal into an electrical signal and transmits it to the signal processor 7, the signal processor 7 stores the electrical signal in the SD card 8, the engineer takes out the SD card 8 in the laser displacement sensor 402 and inserts it into the computer, extracts the displacement measurement data and analyzes it, finally evaluates the damage of the plate beam hinge joint, the staff can also rotate the movable rod 403b and the gripper 401 to make the measuring plate 404 in the vertical position, the laser displacement sensor 402 emits horizontal laser to irradiate to the measuring plate 404 to detect the horizontal displacement of the plate beams on both sides of the hinge joint.
[0036] In summary: the calibration mechanism 3 can ensure the horizontal state of the detection mechanism 4 in the initial state of detection, thereby ensuring the accuracy and reliability of the detection data, the laser displacement sensor 402 emits laser to the measuring plate 404 and receives the reflected light, the measuring plate 404 moves following the movement of the plate beam during the detection process, thereby making the signal processor 7 of the laser displacement sensor 402 receive different ranges of collected distances, the collected data is transmitted to the computer through the SD card 8, the computer processes the collected displacement data, analyzes the relative displacement change of both sides of the hinge joint, evaluates the working performance of the hinge joint according to the displacement data, including the stiffness, force transmission capacity and whether there is damage, etc., the laser displacement sensor 402 can provide non-contact and high-precision displacement measurement, can accurately capture the small displacement change of both sides of the hinge joint, greatly improves the accuracy and accuracy of the detection result of the hinge joint damage, the collected detection information can be stored through the SD card 8, so that the engineer can better understand the damage and structural performance of the hinge joint, without the engineer participating in the whole process, reducing the workload and difficulty.
Claims
1. A device for detecting hinge joint damage in a hollow concrete slab beam, characterized in that: The system includes a connecting base (1), a mounting base (2) below the connecting base (1), and a calibration mechanism (3) fixedly installed between the mounting base (2) and the connecting base (1). It also includes: The testing mechanism (4) is located below the mounting base (2).
2. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 1, characterized in that: The connecting base (1) is configured with an internal hollow structure. The top of the connecting base (1) is provided with a contact surface (101), and the bottom of the connecting base (1) is provided with a connecting surface (102). The four corners of the connecting surface (102) are provided with first threaded holes (5), and the four corners of the surface of the mounting base (2) are provided with second threaded holes (6).
3. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 1, characterized in that: The calibration mechanism (3) includes a threaded rod (301), an adjustment knob (302), and a level (303). The threaded rod (301) is threadedly connected to the inside of the first threaded hole (5) and the second threaded hole (6). The adjustment knob (302) is fixedly connected to the bottom of the threaded rod (301). The level (303) is fixedly installed at the center of the bottom of the mounting base (2).
4. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 1, characterized in that: The detection mechanism (4) includes a gripper (401), a laser displacement sensor (402), a connecting rod (403), and a measuring plate (404). The gripper (401) is fixedly installed at the bottom of the mounting base (2). The laser displacement sensor (402) is movably installed inside the gripper (401). The connecting rod (403) is fixedly installed at the bottom of another mounting base (2). The measuring plate (404) is fixedly installed at one end of the connecting rod (403).
5. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 1, characterized in that: The detection mechanism (4) further includes a first connecting block (405) and a first rotating shaft (406). The first connecting block (405) is fixedly installed between the gripper (401) and the connecting base (1), and the first rotating shaft (406) is fixedly installed between the first connecting block (405) and the gripper (401).
6. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 4, characterized in that: The connecting rod (403) includes a fixed rod (403a), a movable rod (403b), a second connecting block (403c), and a second rotating shaft (403d). The second connecting block (403c) is fixedly installed between the fixed rod (403a) and the movable rod (403b), and the second rotating shaft (403d) is fixedly installed inside the second connecting block (403c). One end of the fixed rod (403a) is provided with an external thread.
7. The detection device for hinge joint damage in a concrete hollow slab beam according to claim 4, characterized in that: The laser displacement sensor (402) has a signal processor (7) inside. An SD card (8) is electrically connected to one side of the signal processor (7), and a battery (9) is fixedly connected to the other side of the signal processor (7).