Bridge crack detection device
By setting a gripping mechanism with adjustable length and angle on the observation head of the bridge crack detector, the rubber ring and high-permeable membrane structure is solved, and the detection stability and safety are improved. Efficient inspection of the bottom and side walls of the bridge is achieved.
Patent Information
- Application Number
- CN202420687092.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The observation head of the existing bridge crack detector cannot adjust the length, which leads to long-term bent when inspecting the bottom of the bridge, and is inconvenient to detect the slits on the side of the bridge pier, resulting in unstable detection of the detector and prone to arm soreness and frictional injuries.
A bridge crack detection device is designed, and the observation head is equipped with a grip mechanism, including a slide rod, sleeve, locking ring and angle adjustment rotor, which can adjust the length and angle within a certain range, increasing the grip space and multiple Angle adaptability, and a rubber ring and high-permeability membrane are installed at the bottom of the observation head to prevent wear and dust from entering.
It improves the stability and safety of inspection, reduces arm strain, facilitates detection of the bottom of the bridge and side walls of the bridge pier, and quickly replaces the rubber ring, ensuring the cleanliness and high-definition shooting ability of the equipment.
Smart Images
Figure CN222279673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detection equipment, in particular to a bridge crack detection device. Background Art
[0002] In bridge construction, concrete structures, especially large-volume concrete structures, often have cracks on their surfaces due to various reasons. In particular, the depth of the cracks directly affects the quality and safety of the components. Currently, the most commonly used crack depth detection method, which is also required by relevant standards, is ultrasonic detection. When there is only one measurable surface at the crack site of the structure, a crack observation instrument is generally used for detection.
[0003] The crack depth observation instrument includes a main unit, an observation head, and a connecting line connecting the main unit and the observation head. The observation head emits light sources such as lasers or infrared rays. When the light encounters a crack, it will be refracted, reflected, or scattered. By measuring the changes in light, the existence and changes of cracks can be determined. The lower end of the observation head is equipped with a high-resolution camera that can take images or videos of cracks in real time. By processing and analyzing these images, information such as the shape, length, and width of the crack can be extracted.
[0004] Most of the observation heads in the prior art do not have handles. The gap is detected by grasping the side end face of the observation head with bare hands and pressing it on the gap of the bridge. The bottom of the bridge is at a certain height from the ground, and a ladder is needed to be stepped on for detection. The ladder has a stepped structure and the bridge body has an arched structure. During the detection, when climbing one step, the head touches the bottom of the bridge, while when descending one step, the hands cannot touch the bottom of the bridge. Raising the arms causes the center of gravity to move upward, which makes it easy to lose balance and fall, making the detection very inconvenient.
[0005] For example, a crack detector disclosed in authorization announcement No. CN212585667U includes a main unit, a transducer, and a connecting line connecting the main unit and the transducer. A strap is connected to the front of the main unit, and a plug-in shell is fixedly provided on the side of one end of the strap facing away from the main unit. The plug-in shell extends along the length direction of the strap, and the plug-in shell is provided with an insertion cavity for the other end of the strap to pass through. A first magnetic strip is fixedly provided on the outer side of the end of the strap away from the plug-in shell, and a second magnetic strip is fixedly provided on the side wall of the insertion cavity facing the strap. When the end of the strap away from the plug-in shell is passed through the insertion cavity, the first magnetic strip and the second magnetic strip are attracted to each other.
[0006] The above-mentioned crack detector disclosed above also has this problem. The observation head of the detector is relatively short and the length cannot be adjusted, resulting in the inspector's arms being raised and upper body bent when performing height inspection on cracks at the bottom of the bridge. It is not only difficult to maintain stability, but long-term inspection can easily lead to arm soreness and lumbar muscle strain. When inspecting cracks in the gaps between piers, the arms are easily scratched during the extension and retraction process in summer, and the arms are difficult to insert into the gaps for inspection due to thicker clothes in winter. Utility Model Content
[0007] The purpose of the utility model is to provide a bridge crack detection device, which has the advantages of convenient and efficient detection, and solves the problems in the prior art that the observation head of the crack detector cannot adjust the length, resulting in the need to bend over for a long time when detecting the gap at the bottom of the bridge, and the detection equipment is inconvenient to detect the narrow cracks on the side of the bridge pier.
[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge crack detection device, comprising a detector body, a data line and an observation head, the detector body and the observation head are connected via data line transmission, and a holding mechanism is provided on the upper end surface of the observation head;
[0009] The holding mechanism includes a sliding rod, a sleeve, a locking ring and an angle adjustment dial. The angle adjustment dial is fixedly mounted on the upper end surface of the observation head. The sliding rod passes through the locking ring and is inserted into the sleeve and is slidably connected to the sleeve. A rotating shaft is provided at the bottom of the side end surface of the sliding rod. An axial hole is provided at the center of the side end surface of the angle adjustment dial. The sliding rod and the angle adjustment dial are rotatably connected through the rotating shaft and the axial hole.
[0010] As a preferred bridge crack detection device of the utility model, the bottom of the sleeve is provided with a four-petal jaw, the outer end surface of the four-petal jaw is provided with an external thread, the inner end surface of the locking ring is provided with an internal thread, the locking ring is sleeved on the four-petal jaw and threadedly connected thereto, and the outer end surface of the four-petal jaw is a conical structure.
[0011] As a preferred bridge crack detection device of the utility model, the outer end surface of the sleeve is a conical structure, and the outer end surface of the sleeve is sprayed with a rubber coating.
[0012] As a preferred bridge crack detection device of the utility model, the top of the sleeve is a spherical top structure.
[0013] As a preferred bridge crack detection device of the utility model, a latch is provided at the bottom of the sliding rod, the number of the latch is two, a spring is provided between two groups of the latches, a pin hole is provided on the side end surface of the angle adjustment dial, and the sliding rod and the angle adjustment dial are fixedly connected by the cooperation of the latch and the pin hole.
[0014] As a preferred bridge crack detection device of the utility model, the number of the pin holes is five, the five groups of pin holes are arranged in a circular array around the shaft hole, and the angle between adjacent pin holes is forty-five degrees.
[0015] As a preferred bridge crack detection device of the utility model, a rubber ring is provided at the bottom of the observation head, a clamping strip is provided at the top of the rubber ring, a clamping slot is provided at the bottom of the observation head, and the rubber ring and the observation head are clamped together through a buckle and the clamping slot.
[0016] As a preferred embodiment of the bridge crack detection device of the utility model, a high-transmittance film is arranged at the center of the rubber ring, and the high-transmittance film is made of polyimide film.
[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0018] 1. The utility model sets a holding mechanism at the upper end of the observation head, and cooperates with a slide rod, a sleeve and a locking ring to make the length of the holding mechanism freely adjustable within a certain range, so as to adapt to the height difference between the arc surface at the bottom of the pier and the climbing ladder. The holding mechanism extends the grasping space of the observation head, and there is no need to raise the arm above the head, thereby improving the stability and safety of the detection.
[0019] 2. The utility model cooperates with the sliding rod and the angle adjustment dial so that the holding mechanism and the observation head can cooperate at multiple angles to meet the usage requirements of different scenarios. When inspecting the bottom of the bridge, the holding mechanism can be perpendicular to the upper end face of the observation head. When inspecting the gap between the side walls of the pier, the holding mechanism can be parallel to the upper end face of the observation head, so that the observation head can be extended into the narrow gap for inspection.
[0020] 3. The utility model provides a rubber ring at the bottom of the observation head to prevent the observation head from being worn due to friction between the bottom and the bridge surface during detection. At the same time, the snap-on structure facilitates the replacement of the rubber ring. A high-transmittance film is provided in the center of the rubber ring to prevent dust at the bottom of the bridge from falling on the observation head during detection of the bottom of the bridge, causing wear of the observation head. The dust that falls into the observation head is difficult to wipe off. The high-transmittance film is combined with the detachable rubber ring structure to quickly replace the rubber ring, thereby ensuring that the equipment can quickly perform high-definition shooting and conveniently flushing the high-transmittance film with the removed rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 This is an exploded view of the observation head and the holding mechanism of the utility model;
[0023] Figure 3 This is a schematic diagram of the rubber ring structure of the utility model;
[0024] Figure 4 This is a front cross-sectional view of the observation head and the holding mechanism of the utility model;
[0025] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle;
[0026] Figure 6 For the utility model Figure 4 B is an enlarged view.
[0027] In the figure: 1. detector body; 2. data cable; 3. observation head; 310. card slot; 320. rubber ring; 321. card strip; 322. high-transmittance film; 4. holding mechanism; 410. sleeve; 411. four-petal clamp; 412. rubber coating; 420. locking ring; 430. sliding rod; 431. rotating shaft; 432. latch; 433. spring; 440. angle adjustment dial; 441. shaft hole; 442. pin hole. DETAILED DESCRIPTION
[0028] See also Figure 1-Figure 6 A bridge crack detection device comprises a detector body 1, a data line 2 and an observation head 3, wherein the detector body 1 and the observation head 3 are connected through the data line 2, and a holding mechanism 4 is arranged on the upper end surface of the observation head 3;
[0029] The holding mechanism 4 includes a sliding rod 430, a sleeve 410, a locking ring 420 and an angle adjustment dial 440. The angle adjustment dial 440 is fixedly installed on the upper end surface of the observation head 3. The sliding rod 430 passes through the locking ring 420 and is inserted into the sleeve 410 and is slidably connected with the sleeve 410. A rotating shaft 431 is provided at the bottom of the side end surface of the sliding rod 430, and an axial hole 441 is provided at the center of the side end surface of the angle adjustment dial 440. The sliding rod 430 and the angle adjustment dial 440 are rotatably connected through the rotating shaft 431 and the axial hole 441.
[0030] When the detection device is in use, the observation head 3 is connected to the detection instrument body 1 through the data line 2, and the detection instrument body 1 is hung around the neck of the detection personnel. Then, the locking ring 420 is rotated counterclockwise to allow the slide rod 430 to slide along the sleeve 410. After the slide rod 430 is pulled outward to a suitable length, the locking ring 420 is tightened clockwise to fix the slide rod 430 and the sleeve 410. Then, the latch 432 is pressed to make the latch 432 enter the pin hole 442, and the slide rod 430 is rotated to the pin hole 442 at a suitable angle. 2, so that the pin 432 rebounds and is stuck in the pin hole 442, thereby fixing the slide rod 430 and the observation head 3, holding the outer side of the sleeve 410, so that the observation head 3 fits the crack, and by operating the detector body 1, the observation head 3 takes a picture of the crack for observation. If dust in the crack falls on the observation head 3 during the continuous detection process, affecting the clarity of the picture, quickly remove the rubber ring 320, replace it with a new rubber ring 320, take pictures again for detection, and clean the rubber ring 320 uniformly after the detection is completed.
[0031] Furthermore, a four-petal clamp 411 is provided at the bottom of the sleeve 410, the outer end face of the four-petal clamp 411 is provided with an external thread, the inner end face of the locking ring 420 is provided with an internal thread, the locking ring 420 is sleeved on the four-petal clamp 411 and threadedly connected thereto, and the outer end face of the four-petal clamp 411 is a conical structure.
[0032] When the locking ring 420 is gradually tightened, due to the change in the diameter of the four-petal clamp 411, the four-petal clamp 411 contracts inward under the squeezing of the locking ring 420, thereby clamping the sliding rod 430 and fixing the sliding rod 430 to the sleeve 410, so as to quickly adjust the length of the holding mechanism 4 to meet the requirements of bridge bottom detection with different slopes.
[0033] Furthermore, the outer end surface of the sleeve 410 is a conical structure, and the outer end surface of the sleeve 410 is sprayed with a rubber coating 412 .
[0034] The friction between the sleeve 410 and the palm is increased by the rubber coating 412, while the conical structure design makes it difficult for the palm to slip when the palm is tightly gripped and exerted force, thereby preventing the holding mechanism 4 from slipping when stretched and causing the observation head 3 to fall.
[0035] Furthermore, the top of the sleeve 410 is a spherical top structure.
[0036] The ball-top structure makes the top of the sleeve 410 more rounded, thereby preventing the palm from being hurt when the holding mechanism 4 is retracted.
[0037] Furthermore, a latch 432 is provided at the bottom of the sliding rod 430, and the number of the latches 432 is two. A spring 433 is provided between the two groups of latches 432, and a pin hole 442 is provided on the side end surface of the angle adjustment dial 440. The sliding rod 430 and the angle adjustment dial 440 are fixedly connected through the latch 432 and the pin hole 442.
[0038] When the slide rod 430 rotates until the latch 432 and the pin hole 442 are aligned, the latch 432 is inserted into the pin hole 442 under the restoring action of the spring 433 , thereby fixing Huang An and the latch 432 .
[0039] Furthermore, the number of the pin holes 442 is five, and the five groups of pin holes 442 are arranged in a circular array around the shaft hole 441, and the angle between adjacent pin holes 442 is forty-five degrees.
[0040] The holding mechanism 4 and the observation head 3 can cooperate at multiple angles to meet the usage requirements of different scenarios. When inspecting the bottom of the bridge, the holding mechanism 4 can be perpendicular to the upper end face of the observation head 3. When inspecting the gap between the pier side walls, the holding mechanism 4 can be parallel to the upper end face of the observation head 3, so that the observation head 3 can be extended into the narrow gap for inspection.
[0041] Furthermore, a rubber ring 320 is provided at the bottom of the observation head 3, a clamping strip 321 is provided at the top of the rubber ring 320, a clamping slot 310 is provided at the bottom of the observation head 3, and the rubber ring 320 and the observation head 3 are clamped in cooperation with the clamping slot 310 through a buckle.
[0042] A rubber ring 320 is provided at the bottom of the observation head 3 to prevent the observation head 3 from being worn due to friction between the bottom and the bridge surface during the detection process of the observation head 3. At the same time, the snap-on structure facilitates the replacement of the rubber ring 320.
[0043] Furthermore, a high-transmittance film 322 is disposed at the center of the rubber ring 320 , and the high-transmittance film 322 is made of a polyimide film.
[0044] A high-transmittance film 322 is arranged at the center of the rubber ring 320 to prevent dust at the bottom of the bridge from falling onto the observation head 3 during the inspection of the bottom of the bridge, thereby causing wear of the observation head 3 and making it difficult to wipe off the dust that falls into the observation head 3. The high-transmittance film 322 cooperates with the detachable rubber ring 320 structure, so that the rubber ring 320 can be quickly replaced, thereby ensuring that the equipment can quickly perform high-definition shooting, and the high-transmittance film 322 can be easily rinsed by the detached rubber ring 320.
[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A bridge crack detection device, comprising a detector body (1), a data line (2) and an observation head (3), wherein the detector body (1) and the observation head (3) are connected via the data line (2), and characterized in that: The upper end surface of the observation head (3) is provided with a holding mechanism (4); The holding mechanism (4) comprises a sliding rod (430), a sleeve (410), a locking ring (420) and an angle adjustment dial (440); the angle adjustment dial (440) is fixedly mounted on the upper end surface of the observation head (3); the sliding rod (430) passes through the locking ring (420) and is inserted into the sleeve (410) and is slidably connected with the sleeve (410); a rotating shaft (431) is arranged at the bottom of the side end surface of the sliding rod (430); an axial hole (441) is arranged at the center of the side end surface of the angle adjustment dial (440); the sliding rod (430) and the angle adjustment dial (440) are rotatably connected through the rotating shaft (431) and the axial hole (441).
2. A bridge crack detection device according to claim 1, characterized in that: A four-petal clamp (411) is provided at the bottom of the sleeve (410), an outer end surface of the four-petal clamp (411) is provided with an external thread, an inner end surface of the locking ring (420) is provided with an internal thread, the locking ring (420) is sleeved on the four-petal clamp (411) and is threadedly connected thereto, and the outer end surface of the four-petal clamp (411) is a conical structure.
3. A bridge crack detection device according to claim 2, characterized in that: The outer end surface of the sleeve (410) is a conical structure, and the outer end surface of the sleeve (410) is sprayed with a rubber coating (412).
4. A bridge crack detection device according to claim 3, characterized in that: The top of the sleeve (410) is a spherical top structure.
5. A bridge crack detection device according to claim 1, characterized in that: A latch (432) is provided at the bottom of the sliding rod (430), the number of the latches (432) is two, a spring (433) is provided between two groups of the latches (432), a pin hole (442) is provided on the side end surface of the angle adjustment dial (440), and the sliding rod (430) and the angle adjustment dial (440) are fixedly connected by the latch (432) and the pin hole (442).
6. A bridge crack detection device according to claim 5, characterized in that: The number of the pin holes (442) is five, and the five groups of pin holes (442) are arranged in a circular array around the shaft hole (441), and the angle between adjacent pin holes (442) is forty-five degrees.
7. A bridge crack detection device according to claim 1, characterized in that: The bottom of the observation head (3) is provided with a rubber ring (320), the top of the rubber ring (320) is provided with a clamping strip (321), the bottom of the observation head (3) is provided with a clamping slot (310), and the rubber ring (320) and the observation head (3) are clamped together with the clamping slot (310) through a buckle.
8. A bridge crack detection device according to claim 7, characterized in that: A high-transmittance film (322) is arranged at the center of the rubber ring (320), and the high-transmittance film (322) is made of a polyimide film.