A crack detector for road maintenance

Abstract

The utility model discloses a kind of crack detectors for road maintenance, belong to road detection technical field, and its technical scheme main points include crack detector ontology, mobile mechanism is welded at the bottom of crack detector ontology, buffer mechanism is welded at the bottom of mobile mechanism front side, and buffer mechanism is elastically buffered by outer sleeve tube, reset spring and extrusion plate, flexible support is formed to detection head, when detection head meets road surface protrusion in the equipment moving process, detection head extrudes extrusion plate upwards, reset spring is compressed and absorbs impact force, avoid abrasion, fragmentation caused by detection head directly with mounting plate or outer sleeve tube rigid collision, the elastic force of reset spring is continuously applied to the top of detection head by extrusion plate, so that detection head always keeps the close state of being attached to road surface, even in the case of slightly uneven road surface, the telescopic of spring can drive detection head to adjust height with road surface profile self-adapting.

Description

Technical Field

[0001] This utility model relates to the field of road surface inspection technology, and in particular to a crack detector for road surface maintenance. Background Technology

[0002] The crack detection instrument is a precision testing device widely used in bridges, tunnels, buildings, concrete pavements, and metal surfaces. It can accurately measure the width and depth of cracks. The instrument features automatic identification, real-time display, and high precision. Different models have different detection ranges and technical parameters. For example, the width detection range can reach 6 mm, and the depth detection range can reach up to 500 mm. Some models are equipped with night vision, tri-proof design, and voice prompts to meet the detection needs in various environments.

[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing crack detectors lack a structure that provides elastic support for the detection head when inspecting road surfaces. This results in the probe being unable to fit properly against the road surface if there are obvious bumps or depressions, leading to deviations in the measurement data of crack width or depth.

[0004] Therefore, a crack detector for road maintenance is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a crack detector for road maintenance, which can solve the problem that existing crack detectors lack a structure for elastically supporting the detection head when inspecting the road surface. This results in the probe being unable to fit against the road surface if there are obvious bumps or depressions, thus causing deviations in the measurement data of crack width or depth.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crack detector for road maintenance, comprising a crack detector body, a moving mechanism welded to the bottom of the crack detector body, a buffer mechanism welded to the bottom of the front side of the moving mechanism, the buffer mechanism comprising a mounting plate, an outer sleeve, a return spring, and a compression plate, the mounting plate welded to the bottom of the front side of the moving mechanism, the outer sleeve welded to the top of the mounting plate, the return spring welded to the top of the inner side of the outer sleeve, the compression plate slidably connected to the bottom of the outer sleeve, the bottom of the return spring welded to the top of the compression plate, a connecting line on the front side of the crack detector body passing through the outer sleeve, the return spring, and the compression plate and extending to the outer side of the bottom of the mounting plate, a detection head mounted at the bottom of the connecting line on the front side of the crack detector body, the top of the detection head contacting the bottom of the compression plate, and the detection head slidably connected to the inner side of the mounting plate and the inner side of the outer sleeve.

[0007] Preferably, the moving mechanism includes a moving plate, a support block, self-locking casters, and a push rod, with the support block welded to the bottom of the crack detector body.

[0008] Preferably, the movable plate is welded to the bottom of the support block, and the self-locking caster wheel is installed at the chamfer of the bottom of the movable plate.

[0009] Preferably, the push rod is welded to the rear side of the top of the movable plate, and a protective sleeve is fitted on the rear side of the top of the push rod, the surface of which is engraved with anti-slip texture.

[0010] Preferably, a reinforcing rod is welded to the chamfer at the bottom of the crack detector body, and the bottom of the reinforcing rod is welded to the chamfer at the top of the moving plate.

[0011] Preferably, a reinforcing plate is welded to the surface of the push rod, and the surface of the reinforcing plate is coated with an anti-corrosion coating.

[0012] Preferably, an elastic buffer pad is fixedly connected to the bottom of the extrusion plate, and the elastic buffer pad is made of nitrile rubber material.

[0013] Preferably, the inner side of the support block has several weight-reducing holes, and the inner side of the support block is welded with reinforcing ribs.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The mobile mechanism of this application uses a combination of a mobile plate, a support block, and self-locking casters to stably support the crack detector body on the ground. The self-locking casters are installed at the bottom chamfer of the mobile plate, which allows the equipment to flexibly turn in any direction on the road surface, adapting to the complex movement needs of maintenance sites. At the same time, the self-locking function can quickly fix the position of the equipment during the inspection operation, avoiding the impact of equipment displacement on data accuracy during the inspection process. Compared with a fixed base or a one-way moving structure, it significantly reduces the intensity of manual handling and improves the inspection efficiency. The reinforcing rod is connected to the top of the mobile plate, which effectively disperses the vibration of the equipment during operation, reduces the impact of vibration on the precision detection components inside the body, and reduces the error of the detection data caused by vibration. At the same time, the reinforcing rod and the support block work together to further improve the overall load-bearing capacity of the equipment. It can be adapted to different specifications of detection heads or additional components, such as data storage modules or lighting components, enhancing the functional expandability of the equipment. 2. The buffer mechanism of this application provides flexible support for the detection head through the elastic buffering of the outer sleeve, return spring, and compression plate. When the detection head encounters a road surface protrusion during equipment movement, the detection head presses upward against the compression plate, and the return spring compresses and absorbs the impact force, avoiding wear and breakage caused by direct rigid collision between the detection head and the mounting plate or outer sleeve. The elastic force of the return spring acts continuously on the top of the detection head through the compression plate, keeping the detection head in close contact with the road surface at all times. Even in the case of slight road surface unevenness, the extension and contraction of the spring can drive the detection head to adaptively adjust its height according to the road surface contour, avoiding missed detections or data distortion caused by gaps between the detection head and the road surface. Compared with detection heads without a buffer structure, this elastic buffer design can significantly improve the adaptability of the detection head to complex road surfaces, especially suitable for the detection of road surfaces before maintenance, ensuring the reliability of the detection results. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the crack detector for road surface maintenance according to this utility model; Figure 2 This is a schematic diagram of the buffer mechanism of this utility model; Figure 3 This is a schematic diagram of the structure of the moving mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the reinforcing plate of this utility model; Figure 5 This is a schematic diagram of the structure of the elastic buffer pad of this utility model; Figure 6 This is a schematic diagram of the weight reduction hole of this utility model.

[0016] In the diagram, 1. Crack detector body; 2. Moving mechanism; 21. Moving plate; 22. Support block; 23. Self-locking caster wheel; 24. Push rod; 3. Buffer mechanism; 31. Mounting plate; 32. Outer sleeve; 33. Return spring; 34. Squeezing plate; 4. Protective sleeve; 5. Reinforcing rod; 6. Reinforcing plate; 7. Elastic buffer pad; 8. Weight reduction hole; 9. Reinforcing rib. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 The present invention provides the following technical solution: A crack detector for road maintenance includes a crack detector body 1. A moving mechanism 2 is welded to the bottom of the crack detector body 1. A buffer mechanism 3 is welded to the bottom of the front side of the moving mechanism 2. The buffer mechanism 3 includes a mounting plate 31, an outer sleeve 32, a return spring 33, and a compression plate 34. The mounting plate 31 is welded to the bottom of the front side of the moving mechanism 2. The outer sleeve 32 is welded to the top of the mounting plate 31. The return spring 33 is welded to the top of the inner side of the outer sleeve 32. The compression plate 34 is slidably connected to the bottom of the outer sleeve 32. The bottom of the return spring 33 is welded to the top of the compression plate 34. A connecting line on the front side of the crack detector body 1 passes through the outer sleeve 32, the return spring 33, and the compression plate 34 and extends to the outer side of the bottom of the mounting plate 31. A detection head is installed at the bottom of the connecting line on the front side of the crack detector body 1. The top of the detection head contacts the bottom of the compression plate 34. The detection head is slidably connected to the inner side of the mounting plate 31 and the inner side of the outer sleeve 32.

[0019] In this embodiment: the crack detector body 1 integrates core modules such as crack detection, data processing, and display, which is the foundation for accurate detection of parameters such as the width and depth of road cracks. The mounting plate 31 ensures the installation stability of the buffer mechanism 3, preventing the overall displacement of the components during the buffering process, and also provides a bottom support reference for the detection head. The outer sleeve 32 wraps the upper part of the reset spring 33, the compression plate 34, and the connecting wires, preventing external impurities from entering the cavity and causing the spring to jam or the compression plate 34 to slide poorly. The reset spring 33 can absorb the impact force when the detection head encounters a road surface protrusion by compressing the spring. Rigid impact is transformed into elastic deformation, effectively protecting the detection head, extrusion plate 34, and mounting plate 31, preventing component damage due to impact. In terms of active contact, the spring's rebound force continuously acts on the extrusion plate 34, keeping the detection head in close contact with the road surface. Even when the road surface is slightly concave or uneven, the spring's extension and contraction can adaptively adjust the height of the detection head, avoiding detection gaps and ensuring the integrity and accuracy of the detection data. The top of the extrusion plate 34 is welded to the reset spring 33, and the bottom contacts the detection head, which can evenly transmit the spring's buffering force to the detection head, preventing the spring from directly acting on the detection head and causing excessive local stress.

[0020] Specifically, such as Figure 3 As shown, the moving mechanism 2 includes a moving plate 21, a support block 22, a self-locking caster wheel 23, and a push rod 24. The support block 22 is welded to the bottom of the crack detector body 1.

[0021] Specifically, such as Figure 3 As shown, the movable plate 21 is welded to the bottom of the support block 22, and the self-locking caster wheel 23 is installed at the chamfer of the bottom of the movable plate 21.

[0022] Specifically, such as Figure 3 , Figure 4As shown, push rod 24 is welded to the rear side of the top of movable plate 21, and a protective sleeve 4 is fitted on the rear side of the top of push rod 24. The surface of the protective sleeve 4 is engraved with anti-slip texture.

[0023] In this embodiment: the movable plate 21 provides a unified installation benchmark for the self-locking casters 23, ensuring that the height of the casters at the four chamfered corners is consistent, avoiding tilting due to wheel height deviation when the equipment moves, ensuring the horizontal state of the equipment during the testing process, reducing uneven contact between the testing head and the road surface caused by tilting, and improving the accuracy of the testing data. The support block 22 can absorb some road vibration, reducing the transmission of vibration to the precision testing components inside the main body, reducing the risk of component failure caused by vibration, and extending the service life of the equipment. The self-locking casters 23 allow the equipment to flexibly adapt to the irregular direction of road cracks without frequent adjustments to the overall position of the equipment, greatly reducing the intensity of manual handling and improving testing efficiency. The push rod 24 allows the operator to stand behind the equipment and push the equipment to move by pushing the equipment without bending over or turning to exert force, reducing back fatigue caused by long-term operation. The protective cover 4, with its flexible material, can buffer the direct contact between the hand and the metal surface of the push rod 24, reducing the corrosion of the metal push rod 24 by hand sweat and oil, and at the same time avoiding discomfort caused by the cold surface of the metal push rod 24 in winter.

[0024] Specifically, such as Figure 4 As shown, a reinforcing rod 5 is welded to the chamfer at the bottom of the crack detector body 1, and the bottom of the reinforcing rod 5 is welded to the chamfer at the top of the moving plate 21.

[0025] Specifically, such as Figure 4 As shown, a reinforcing plate 6 is welded to the surface of the push rod 24, and the surface of the reinforcing plate 6 is coated with an anti-corrosion coating.

[0026] In this embodiment: By setting a reinforcing rod 5 to connect the crack detector body 1 and the moving plate 21, the pressure of the crack detector body 1 on the moving plate 21 is dispersed, and the bottom of the crack detector body 1 is prevented from deforming due to excessive local stress. By setting a reinforcing plate 6, the stability of the connection between the push rods 24 on both sides is increased. By setting an anti-corrosion coating, it can resist the erosion of rainwater, dust, oil and chemical reagents at the road maintenance site, prevent rust from appearing at the weld between the reinforcing plate 6 and the push rod 24, and extend the service life of the push rod 24 assembly.

[0027] Specifically, such as Figure 5 As shown, an elastic buffer pad 7 is fixedly connected to the bottom of the extrusion plate 34. The elastic buffer pad 7 is made of nitrile rubber.

[0028] Specifically, such as Figure 6 As shown, the inner side of the support block 22 has several weight-reducing holes 8, and the inner side of the support block 22 is welded with reinforcing ribs 9.

[0029] In this embodiment: by setting the elastic buffer pad 7, a flexible buffer layer can be formed between the extrusion plate 34 and the detection head, reducing the rigid friction between the two and preventing scratches or wear on the top of the detection head. At the same time, it can help absorb the small impact force encountered by the detection head, further improving the buffering effect. The elastic buffer pad 7 is made of nitrile rubber, which has high elasticity, high wear resistance and oil resistance, and can adapt to the complex environment of road maintenance site. It is not easy to age or deform after long-term use. By setting the weight reduction hole 8, the material usage of the support block 22 can be reduced, the overall weight of the moving mechanism 2 can be reduced, thereby reducing the load on the self-locking universal wheel 23, reducing the wear of the universal wheel, and extending its service life. By setting the reinforcing rib 9, the structural strength loss of the support block 22 after the weight reduction hole 8 is opened can be compensated, and the bending and compression resistance of the support block 22 can be prevented from decreasing due to weight reduction.

[0030] Working principle: First, the operator pushes the device by holding the push rod 24, which in turn moves the moving plate 21 on the road surface using the self-locking casters 23. Then, when the device moves to the area of ​​the crack to be detected, the operator locks the self-locking casters 23 to fix the device position. At this time, the crack detector body 1 supplies power to the detection head and transmits signals through the front connecting cable. The detection head contacts the road surface under the action of the buffer mechanism 3, ready to perform the detection. Then, during the detection process, if there is a protrusion on the road surface, the detection head will press the compression plate 34 upward. The compression plate 34 slides upward along the inner side of the outer sleeve 32 and compresses the return spring 33. The return spring 33 absorbs the impact through elastic deformation. The force transforms rigid collisions into flexible buffers. At the same time, the nitrile rubber elastic buffer pad 7 at the bottom of the extrusion plate 34 further reduces friction and impact between the detection head and the extrusion plate 34, protecting the detection head from damage. Subsequently, when the detection head passes over a protrusion or encounters a road surface depression, the reset spring 33 releases elastic potential energy, pushing the extrusion plate 34 to slide downwards. This causes the detection head to adaptively adjust its height according to the road surface contour, always maintaining a close fit with the road surface to avoid detection gaps. This ensures that parameters such as crack width and depth are accurately captured and transmitted to the crack detector body 1. Finally, the crack detector body 1 processes, analyzes, and displays the received detection data, completing the crack detection work.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crack detector for road surface maintenance, comprising a crack detector body (1), characterized in that: A moving mechanism (2) is welded to the bottom of the crack detector body (1). A buffer mechanism (3) is welded to the bottom of the front side of the moving mechanism (2). The buffer mechanism (3) includes a mounting plate (31), an outer tube (32), a return spring (33), and a pressing plate (34). The mounting plate (31) is welded to the bottom of the front side of the moving mechanism (2). The outer tube (32) is welded to the top of the mounting plate (31). The return spring (33) is welded to the top of the inner side of the outer tube (32). The pressing plate (34) slides... The bottom of the reset spring (33) is welded to the top of the extrusion plate (34) and connected to the bottom of the outer tube (32). The connecting line on the front side of the crack detector body (1) passes through the outer tube (32), the reset spring (33) and the extrusion plate (34) and extends to the outside of the bottom of the mounting plate (31). The bottom of the connecting line on the front side of the crack detector body (1) is equipped with a detection head. The top of the detection head contacts the bottom of the extrusion plate (34). The detection head is slidably connected to the inside of the mounting plate (31) and the inside of the outer tube (32).

2. The crack detector for road surface maintenance according to claim 1, characterized in that: The moving mechanism (2) includes a moving plate (21), a support block (22), a self-locking caster wheel (23) and a push rod (24). The support block (22) is welded to the bottom of the crack detector body (1).

3. A crack detector for road surface maintenance according to claim 2, characterized in that: The movable plate (21) is welded to the bottom of the support block (22), and the self-locking caster wheel (23) is installed at the chamfer of the bottom of the movable plate (21).

4. A crack detector for road surface maintenance according to claim 2, characterized in that: The push rod (24) is welded to the rear side of the top of the movable plate (21), and a protective sleeve (4) is fitted on the rear side of the top of the push rod (24). The surface of the protective sleeve (4) is engraved with anti-slip texture.

5. A crack detector for road surface maintenance according to claim 1, characterized in that: A reinforcing rod (5) is welded to the chamfer at the bottom of the crack detector body (1), and the bottom of the reinforcing rod (5) is welded to the chamfer at the top of the moving plate (21).

6. A crack detector for road surface maintenance according to claim 2, characterized in that: The surface of the push rod (24) is welded with a reinforcing plate (6), and the surface of the reinforcing plate (6) is coated with an anti-corrosion coating.

7. A crack detector for road surface maintenance according to claim 1, characterized in that: An elastic buffer pad (7) is fixedly connected to the bottom of the extrusion plate (34), and the elastic buffer pad (7) is made of nitrile rubber material.

8. A crack detector for road surface maintenance according to claim 2, characterized in that: The inner side of the support block (22) is provided with several weight-reducing holes (8), and the inner side of the support block (22) is welded with reinforcing ribs (9).

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